From a0bd2c70ac75c92f73f6de122e08a4bd155e7774 Mon Sep 17 00:00:00 2001 From: Justin Richer Date: Mon, 20 Dec 2021 13:09:08 -0500 Subject: [PATCH 1/5] [maven-release-plugin] prepare release mitreid-connect-1.3.4 --- openid-connect-client/pom.xml | 2 +- openid-connect-common/pom.xml | 2 +- openid-connect-server-webapp/pom.xml | 2 +- openid-connect-server/pom.xml | 2 +- pom.xml | 2 +- uma-server-webapp/pom.xml | 2 +- uma-server/pom.xml | 2 +- 7 files changed, 7 insertions(+), 7 deletions(-) diff --git a/openid-connect-client/pom.xml b/openid-connect-client/pom.xml index b891d4e0e..e2f9399cb 100644 --- a/openid-connect-client/pom.xml +++ b/openid-connect-client/pom.xml @@ -22,7 +22,7 @@ openid-connect-parent org.mitre - 1.3.4-SNAPSHOT + 1.3.4 .. openid-connect-client diff --git a/openid-connect-common/pom.xml b/openid-connect-common/pom.xml index a2b88b517..cab527332 100644 --- a/openid-connect-common/pom.xml +++ b/openid-connect-common/pom.xml @@ -22,7 +22,7 @@ openid-connect-parent org.mitre - 1.3.4-SNAPSHOT + 1.3.4 .. openid-connect-common diff --git a/openid-connect-server-webapp/pom.xml b/openid-connect-server-webapp/pom.xml index 11881547f..bf2a37479 100644 --- a/openid-connect-server-webapp/pom.xml +++ b/openid-connect-server-webapp/pom.xml @@ -21,7 +21,7 @@ org.mitre openid-connect-parent - 1.3.4-SNAPSHOT + 1.3.4 openid-connect-server-webapp war diff --git a/openid-connect-server/pom.xml b/openid-connect-server/pom.xml index 84fe62198..98aebae3a 100644 --- a/openid-connect-server/pom.xml +++ b/openid-connect-server/pom.xml @@ -23,7 +23,7 @@ org.mitre openid-connect-parent - 1.3.4-SNAPSHOT + 1.3.4 .. diff --git a/pom.xml b/pom.xml index 6824f1360..0dcf6805a 100644 --- a/pom.xml +++ b/pom.xml @@ -20,7 +20,7 @@ 4.0.0 org.mitre openid-connect-parent - 1.3.4-SNAPSHOT + 1.3.4 MITREid Connect pom diff --git a/uma-server-webapp/pom.xml b/uma-server-webapp/pom.xml index e0485e03a..5e8de8840 100644 --- a/uma-server-webapp/pom.xml +++ b/uma-server-webapp/pom.xml @@ -19,7 +19,7 @@ org.mitre openid-connect-parent - 1.3.4-SNAPSHOT + 1.3.4 .. uma-server-webapp diff --git a/uma-server/pom.xml b/uma-server/pom.xml index 2373d34c1..d063dcc4a 100644 --- a/uma-server/pom.xml +++ b/uma-server/pom.xml @@ -19,7 +19,7 @@ org.mitre openid-connect-parent - 1.3.4-SNAPSHOT + 1.3.4 .. uma-server From f5df7621533a79a9a738a6301444a50753bcfb22 Mon Sep 17 00:00:00 2001 From: Justin Richer Date: Mon, 20 Dec 2021 13:09:11 -0500 Subject: [PATCH 2/5] [maven-release-plugin] prepare for next development iteration --- openid-connect-client/pom.xml | 2 +- openid-connect-common/pom.xml | 2 +- openid-connect-server-webapp/pom.xml | 2 +- openid-connect-server/pom.xml | 2 +- pom.xml | 2 +- uma-server-webapp/pom.xml | 2 +- uma-server/pom.xml | 2 +- 7 files changed, 7 insertions(+), 7 deletions(-) diff --git a/openid-connect-client/pom.xml b/openid-connect-client/pom.xml index e2f9399cb..3fbbd9e5e 100644 --- a/openid-connect-client/pom.xml +++ b/openid-connect-client/pom.xml @@ -22,7 +22,7 @@ openid-connect-parent org.mitre - 1.3.4 + 1.3.5-SNAPSHOT .. openid-connect-client diff --git a/openid-connect-common/pom.xml b/openid-connect-common/pom.xml index cab527332..08a111149 100644 --- a/openid-connect-common/pom.xml +++ b/openid-connect-common/pom.xml @@ -22,7 +22,7 @@ openid-connect-parent org.mitre - 1.3.4 + 1.3.5-SNAPSHOT .. openid-connect-common diff --git a/openid-connect-server-webapp/pom.xml b/openid-connect-server-webapp/pom.xml index bf2a37479..a294b1d8b 100644 --- a/openid-connect-server-webapp/pom.xml +++ b/openid-connect-server-webapp/pom.xml @@ -21,7 +21,7 @@ org.mitre openid-connect-parent - 1.3.4 + 1.3.5-SNAPSHOT openid-connect-server-webapp war diff --git a/openid-connect-server/pom.xml b/openid-connect-server/pom.xml index 98aebae3a..eff124611 100644 --- a/openid-connect-server/pom.xml +++ b/openid-connect-server/pom.xml @@ -23,7 +23,7 @@ org.mitre openid-connect-parent - 1.3.4 + 1.3.5-SNAPSHOT .. diff --git a/pom.xml b/pom.xml index 0dcf6805a..d85b71930 100644 --- a/pom.xml +++ b/pom.xml @@ -20,7 +20,7 @@ 4.0.0 org.mitre openid-connect-parent - 1.3.4 + 1.3.5-SNAPSHOT MITREid Connect pom diff --git a/uma-server-webapp/pom.xml b/uma-server-webapp/pom.xml index 5e8de8840..a1db8a273 100644 --- a/uma-server-webapp/pom.xml +++ b/uma-server-webapp/pom.xml @@ -19,7 +19,7 @@ org.mitre openid-connect-parent - 1.3.4 + 1.3.5-SNAPSHOT .. uma-server-webapp diff --git a/uma-server/pom.xml b/uma-server/pom.xml index d063dcc4a..a35038b57 100644 --- a/uma-server/pom.xml +++ b/uma-server/pom.xml @@ -19,7 +19,7 @@ org.mitre openid-connect-parent - 1.3.4 + 1.3.5-SNAPSHOT .. uma-server From 8a58d1260020eeb5121eb4f2097209441919ebfa Mon Sep 17 00:00:00 2001 From: faidh Date: Fri, 25 Mar 2022 11:11:55 +0200 Subject: [PATCH 3/5] Merge latest MitreID with updated 3pps back to GitHub fork --- openid-connect-client/pom.xml | 2 +- openid-connect-common/pom.xml | 2 +- openid-connect-server-webapp/pom.xml | 2 +- .../src/main/webapp/WEB-INF/tags/header.tag | 1 + .../main/webapp/resources/js/lib/backbone.js | 3955 +-- .../main/webapp/resources/js/lib/jquery.js | 17218 +++++------ .../resources/js/lib/moment-with-locales.js | 24858 +++++++++++----- .../webapp/resources/js/lib/underscore.js | 3128 +- openid-connect-server/pom.xml | 2 +- pom.xml | 2 +- uma-server-webapp/pom.xml | 2 +- uma-server/pom.xml | 4 +- 12 files changed, 29385 insertions(+), 19791 deletions(-) diff --git a/openid-connect-client/pom.xml b/openid-connect-client/pom.xml index 3fbbd9e5e..0767d3f27 100644 --- a/openid-connect-client/pom.xml +++ b/openid-connect-client/pom.xml @@ -22,7 +22,7 @@ openid-connect-parent org.mitre - 1.3.5-SNAPSHOT + 1.3.5 .. openid-connect-client diff --git a/openid-connect-common/pom.xml b/openid-connect-common/pom.xml index 08a111149..e091d6736 100644 --- a/openid-connect-common/pom.xml +++ b/openid-connect-common/pom.xml @@ -22,7 +22,7 @@ openid-connect-parent org.mitre - 1.3.5-SNAPSHOT + 1.3.5 .. openid-connect-common diff --git a/openid-connect-server-webapp/pom.xml b/openid-connect-server-webapp/pom.xml index a294b1d8b..a529cbd18 100644 --- a/openid-connect-server-webapp/pom.xml +++ b/openid-connect-server-webapp/pom.xml @@ -21,7 +21,7 @@ org.mitre openid-connect-parent - 1.3.5-SNAPSHOT + 1.3.5 openid-connect-server-webapp war diff --git a/openid-connect-server-webapp/src/main/webapp/WEB-INF/tags/header.tag b/openid-connect-server-webapp/src/main/webapp/WEB-INF/tags/header.tag index f4b4430cf..94f68be33 100644 --- a/openid-connect-server-webapp/src/main/webapp/WEB-INF/tags/header.tag +++ b/openid-connect-server-webapp/src/main/webapp/WEB-INF/tags/header.tag @@ -14,6 +14,7 @@ + diff --git a/openid-connect-server-webapp/src/main/webapp/resources/js/lib/backbone.js b/openid-connect-server-webapp/src/main/webapp/resources/js/lib/backbone.js index 58800425c..3cdcfdc82 100644 --- a/openid-connect-server-webapp/src/main/webapp/resources/js/lib/backbone.js +++ b/openid-connect-server-webapp/src/main/webapp/resources/js/lib/backbone.js @@ -1,1873 +1,2096 @@ -// Backbone.js 1.2.1 +// Backbone.js 1.4.0 -// (c) 2010-2015 Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors +// (c) 2010-2019 Jeremy Ashkenas and DocumentCloud // Backbone may be freely distributed under the MIT license. // For all details and documentation: // http://backbonejs.org (function(factory) { - // Establish the root object, `window` (`self`) in the browser, or `global` on the server. - // We use `self` instead of `window` for `WebWorker` support. - var root = (typeof self == 'object' && self.self == self && self) || - (typeof global == 'object' && global.global == global && global); - - // Set up Backbone appropriately for the environment. Start with AMD. - if (typeof define === 'function' && define.amd) { - define(['underscore', 'jquery', 'exports'], function(_, $, exports) { - // Export global even in AMD case in case this script is loaded with - // others that may still expect a global Backbone. - root.Backbone = factory(root, exports, _, $); - }); - - // Next for Node.js or CommonJS. jQuery may not be needed as a module. - } else if (typeof exports !== 'undefined') { - var _ = require('underscore'), $; - try { $ = require('jquery'); } catch(e) {} - factory(root, exports, _, $); - - // Finally, as a browser global. - } else { - root.Backbone = factory(root, {}, root._, (root.jQuery || root.Zepto || root.ender || root.$)); - } - -}(function(root, Backbone, _, $) { - - // Initial Setup - // ------------- - - // Save the previous value of the `Backbone` variable, so that it can be - // restored later on, if `noConflict` is used. - var previousBackbone = root.Backbone; - - // Create a local reference to a common array method we'll want to use later. - var slice = [].slice; - - // Current version of the library. Keep in sync with `package.json`. - Backbone.VERSION = '1.2.1'; - - // For Backbone's purposes, jQuery, Zepto, Ender, or My Library (kidding) owns - // the `$` variable. - Backbone.$ = $; - - // Runs Backbone.js in *noConflict* mode, returning the `Backbone` variable - // to its previous owner. Returns a reference to this Backbone object. - Backbone.noConflict = function() { - root.Backbone = previousBackbone; - return this; - }; - - // Turn on `emulateHTTP` to support legacy HTTP servers. Setting this option - // will fake `"PATCH"`, `"PUT"` and `"DELETE"` requests via the `_method` parameter and - // set a `X-Http-Method-Override` header. - Backbone.emulateHTTP = false; - - // Turn on `emulateJSON` to support legacy servers that can't deal with direct - // `application/json` requests ... this will encode the body as - // `application/x-www-form-urlencoded` instead and will send the model in a - // form param named `model`. - Backbone.emulateJSON = false; - - // Proxy Underscore methods to a Backbone class' prototype using a - // particular attribute as the data argument - var addMethod = function(length, method, attribute) { - switch (length) { - case 1: return function() { - return _[method](this[attribute]); - }; - case 2: return function(value) { - return _[method](this[attribute], value); - }; - case 3: return function(iteratee, context) { - return _[method](this[attribute], iteratee, context); - }; - case 4: return function(iteratee, defaultVal, context) { - return _[method](this[attribute], iteratee, defaultVal, context); - }; - default: return function() { - var args = slice.call(arguments); - args.unshift(this[attribute]); - return _[method].apply(_, args); - }; - } - }; - var addUnderscoreMethods = function(Class, methods, attribute) { - _.each(methods, function(length, method) { - if (_[method]) Class.prototype[method] = addMethod(length, method, attribute); - }); - }; - - // Backbone.Events - // --------------- - - // A module that can be mixed in to *any object* in order to provide it with - // custom events. You may bind with `on` or remove with `off` callback - // functions to an event; `trigger`-ing an event fires all callbacks in - // succession. - // - // var object = {}; - // _.extend(object, Backbone.Events); - // object.on('expand', function(){ alert('expanded'); }); - // object.trigger('expand'); - // - var Events = Backbone.Events = {}; - - // Regular expression used to split event strings. - var eventSplitter = /\s+/; - - // Iterates over the standard `event, callback` (as well as the fancy multiple - // space-separated events `"change blur", callback` and jQuery-style event - // maps `{event: callback}`), reducing them by manipulating `memo`. - // Passes a normalized single event name and callback, as well as any - // optional `opts`. - var eventsApi = function(iteratee, memo, name, callback, opts) { - var i = 0, names; - if (name && typeof name === 'object') { - // Handle event maps. - if (callback !== void 0 && 'context' in opts && opts.context === void 0) opts.context = callback; - for (names = _.keys(name); i < names.length ; i++) { - memo = iteratee(memo, names[i], name[names[i]], opts); - } - } else if (name && eventSplitter.test(name)) { - // Handle space separated event names. - for (names = name.split(eventSplitter); i < names.length; i++) { - memo = iteratee(memo, names[i], callback, opts); - } - } else { - memo = iteratee(memo, name, callback, opts); - } - return memo; - }; - - // Bind an event to a `callback` function. Passing `"all"` will bind - // the callback to all events fired. - Events.on = function(name, callback, context) { - return internalOn(this, name, callback, context); - }; - - // An internal use `on` function, used to guard the `listening` argument from - // the public API. - var internalOn = function(obj, name, callback, context, listening) { - obj._events = eventsApi(onApi, obj._events || {}, name, callback, { - context: context, - ctx: obj, - listening: listening - }); - - if (listening) { - var listeners = obj._listeners || (obj._listeners = {}); - listeners[listening.id] = listening; - } - - return obj; - }; - - // Inversion-of-control versions of `on`. Tell *this* object to listen to - // an event in another object... keeping track of what it's listening to. - Events.listenTo = function(obj, name, callback) { - if (!obj) return this; - var id = obj._listenId || (obj._listenId = _.uniqueId('l')); - var listeningTo = this._listeningTo || (this._listeningTo = {}); - var listening = listeningTo[id]; - - // This object is not listening to any other events on `obj` yet. - // Setup the necessary references to track the listening callbacks. - if (!listening) { - var thisId = this._listenId || (this._listenId = _.uniqueId('l')); - listening = listeningTo[id] = {obj: obj, objId: id, id: thisId, listeningTo: listeningTo, count: 0}; - } - - // Bind callbacks on obj, and keep track of them on listening. - internalOn(obj, name, callback, this, listening); - return this; - }; - - // The reducing API that adds a callback to the `events` object. - var onApi = function(events, name, callback, options) { - if (callback) { - var handlers = events[name] || (events[name] = []); - var context = options.context, ctx = options.ctx, listening = options.listening; - if (listening) listening.count++; - - handlers.push({ callback: callback, context: context, ctx: context || ctx, listening: listening }); - } - return events; - }; - - // Remove one or many callbacks. If `context` is null, removes all - // callbacks with that function. If `callback` is null, removes all - // callbacks for the event. If `name` is null, removes all bound - // callbacks for all events. - Events.off = function(name, callback, context) { - if (!this._events) return this; - this._events = eventsApi(offApi, this._events, name, callback, { - context: context, - listeners: this._listeners - }); - return this; - }; - - // Tell this object to stop listening to either specific events ... or - // to every object it's currently listening to. - Events.stopListening = function(obj, name, callback) { - var listeningTo = this._listeningTo; - if (!listeningTo) return this; - - var ids = obj ? [obj._listenId] : _.keys(listeningTo); - - for (var i = 0; i < ids.length; i++) { - var listening = listeningTo[ids[i]]; - - // If listening doesn't exist, this object is not currently - // listening to obj. Break out early. - if (!listening) break; - - listening.obj.off(name, callback, this); - } - if (_.isEmpty(listeningTo)) this._listeningTo = void 0; - - return this; - }; - - // The reducing API that removes a callback from the `events` object. - var offApi = function(events, name, callback, options) { - // No events to consider. - if (!events) return; - - var i = 0, listening; - var context = options.context, listeners = options.listeners; - - // Delete all events listeners and "drop" events. - if (!name && !callback && !context) { - var ids = _.keys(listeners); - for (; i < ids.length; i++) { - listening = listeners[ids[i]]; - delete listeners[listening.id]; - delete listening.listeningTo[listening.objId]; - } - return; - } - - var names = name ? [name] : _.keys(events); - for (; i < names.length; i++) { - name = names[i]; - var handlers = events[name]; - - // Bail out if there are no events stored. - if (!handlers) break; - - // Replace events if there are any remaining. Otherwise, clean up. - var remaining = []; - for (var j = 0; j < handlers.length; j++) { - var handler = handlers[j]; - if ( - callback && callback !== handler.callback && - callback !== handler.callback._callback || - context && context !== handler.context - ) { - remaining.push(handler); - } else { - listening = handler.listening; - if (listening && --listening.count === 0) { - delete listeners[listening.id]; - delete listening.listeningTo[listening.objId]; - } - } - } - - // Update tail event if the list has any events. Otherwise, clean up. - if (remaining.length) { - events[name] = remaining; - } else { - delete events[name]; - } - } - if (_.size(events)) return events; - }; - - // Bind an event to only be triggered a single time. After the first time - // the callback is invoked, it will be removed. When multiple events are - // passed in using the space-separated syntax, the event will fire once for every - // event you passed in, not once for a combination of all events - Events.once = function(name, callback, context) { - // Map the event into a `{event: once}` object. - var events = eventsApi(onceMap, {}, name, callback, _.bind(this.off, this)); - return this.on(events, void 0, context); - }; - - // Inversion-of-control versions of `once`. - Events.listenToOnce = function(obj, name, callback) { - // Map the event into a `{event: once}` object. - var events = eventsApi(onceMap, {}, name, callback, _.bind(this.stopListening, this, obj)); - return this.listenTo(obj, events); - }; - - // Reduces the event callbacks into a map of `{event: onceWrapper}`. - // `offer` unbinds the `onceWrapper` after it has been called. - var onceMap = function(map, name, callback, offer) { - if (callback) { - var once = map[name] = _.once(function() { - offer(name, once); - callback.apply(this, arguments); - }); - once._callback = callback; - } - return map; - }; - - // Trigger one or many events, firing all bound callbacks. Callbacks are - // passed the same arguments as `trigger` is, apart from the event name - // (unless you're listening on `"all"`, which will cause your callback to - // receive the true name of the event as the first argument). - Events.trigger = function(name) { - if (!this._events) return this; - - var length = Math.max(0, arguments.length - 1); - var args = Array(length); - for (var i = 0; i < length; i++) args[i] = arguments[i + 1]; - - eventsApi(triggerApi, this._events, name, void 0, args); - return this; - }; - - // Handles triggering the appropriate event callbacks. - var triggerApi = function(objEvents, name, cb, args) { - if (objEvents) { - var events = objEvents[name]; - var allEvents = objEvents.all; - if (events && allEvents) allEvents = allEvents.slice(); - if (events) triggerEvents(events, args); - if (allEvents) triggerEvents(allEvents, [name].concat(args)); - } - return objEvents; - }; - - // A difficult-to-believe, but optimized internal dispatch function for - // triggering events. Tries to keep the usual cases speedy (most internal - // Backbone events have 3 arguments). - var triggerEvents = function(events, args) { - var ev, i = -1, l = events.length, a1 = args[0], a2 = args[1], a3 = args[2]; - switch (args.length) { - case 0: while (++i < l) (ev = events[i]).callback.call(ev.ctx); return; - case 1: while (++i < l) (ev = events[i]).callback.call(ev.ctx, a1); return; - case 2: while (++i < l) (ev = events[i]).callback.call(ev.ctx, a1, a2); return; - case 3: while (++i < l) (ev = events[i]).callback.call(ev.ctx, a1, a2, a3); return; - default: while (++i < l) (ev = events[i]).callback.apply(ev.ctx, args); return; - } - }; - - // Aliases for backwards compatibility. - Events.bind = Events.on; - Events.unbind = Events.off; - - // Allow the `Backbone` object to serve as a global event bus, for folks who - // want global "pubsub" in a convenient place. - _.extend(Backbone, Events); - - // Backbone.Model - // -------------- - - // Backbone **Models** are the basic data object in the framework -- - // frequently representing a row in a table in a database on your server. - // A discrete chunk of data and a bunch of useful, related methods for - // performing computations and transformations on that data. - - // Create a new model with the specified attributes. A client id (`cid`) - // is automatically generated and assigned for you. - var Model = Backbone.Model = function(attributes, options) { - var attrs = attributes || {}; - options || (options = {}); - this.cid = _.uniqueId(this.cidPrefix); - this.attributes = {}; - if (options.collection) this.collection = options.collection; - if (options.parse) attrs = this.parse(attrs, options) || {}; - attrs = _.defaults({}, attrs, _.result(this, 'defaults')); - this.set(attrs, options); - this.changed = {}; - this.initialize.apply(this, arguments); - }; - - // Attach all inheritable methods to the Model prototype. - _.extend(Model.prototype, Events, { - - // A hash of attributes whose current and previous value differ. - changed: null, - - // The value returned during the last failed validation. - validationError: null, - - // The default name for the JSON `id` attribute is `"id"`. MongoDB and - // CouchDB users may want to set this to `"_id"`. - idAttribute: 'id', - - // The prefix is used to create the client id which is used to identify models locally. - // You may want to override this if you're experiencing name clashes with model ids. - cidPrefix: 'c', - - // Initialize is an empty function by default. Override it with your own - // initialization logic. - initialize: function(){}, - - // Return a copy of the model's `attributes` object. - toJSON: function(options) { - return _.clone(this.attributes); - }, - - // Proxy `Backbone.sync` by default -- but override this if you need - // custom syncing semantics for *this* particular model. - sync: function() { - return Backbone.sync.apply(this, arguments); - }, - - // Get the value of an attribute. - get: function(attr) { - return this.attributes[attr]; - }, - - // Get the HTML-escaped value of an attribute. - escape: function(attr) { - return _.escape(this.get(attr)); - }, - - // Returns `true` if the attribute contains a value that is not null - // or undefined. - has: function(attr) { - return this.get(attr) != null; - }, - - // Special-cased proxy to underscore's `_.matches` method. - matches: function(attrs) { - return !!_.iteratee(attrs, this)(this.attributes); - }, - - // Set a hash of model attributes on the object, firing `"change"`. This is - // the core primitive operation of a model, updating the data and notifying - // anyone who needs to know about the change in state. The heart of the beast. - set: function(key, val, options) { - if (key == null) return this; - - // Handle both `"key", value` and `{key: value}` -style arguments. - var attrs; - if (typeof key === 'object') { - attrs = key; - options = val; - } else { - (attrs = {})[key] = val; - } - - options || (options = {}); - - // Run validation. - if (!this._validate(attrs, options)) return false; - - // Extract attributes and options. - var unset = options.unset; - var silent = options.silent; - var changes = []; - var changing = this._changing; - this._changing = true; - - if (!changing) { - this._previousAttributes = _.clone(this.attributes); - this.changed = {}; - } - - var current = this.attributes; - var changed = this.changed; - var prev = this._previousAttributes; - - // Check for changes of `id`. - if (this.idAttribute in attrs) this.id = attrs[this.idAttribute]; - - // For each `set` attribute, update or delete the current value. - for (var attr in attrs) { - val = attrs[attr]; - if (!_.isEqual(current[attr], val)) changes.push(attr); - if (!_.isEqual(prev[attr], val)) { - changed[attr] = val; - } else { - delete changed[attr]; - } - unset ? delete current[attr] : current[attr] = val; - } - - // Trigger all relevant attribute changes. - if (!silent) { - if (changes.length) this._pending = options; - for (var i = 0; i < changes.length; i++) { - this.trigger('change:' + changes[i], this, current[changes[i]], options); - } - } - - // You might be wondering why there's a `while` loop here. Changes can - // be recursively nested within `"change"` events. - if (changing) return this; - if (!silent) { - while (this._pending) { - options = this._pending; - this._pending = false; - this.trigger('change', this, options); - } - } - this._pending = false; - this._changing = false; - return this; - }, - - // Remove an attribute from the model, firing `"change"`. `unset` is a noop - // if the attribute doesn't exist. - unset: function(attr, options) { - return this.set(attr, void 0, _.extend({}, options, {unset: true})); - }, - - // Clear all attributes on the model, firing `"change"`. - clear: function(options) { - var attrs = {}; - for (var key in this.attributes) attrs[key] = void 0; - return this.set(attrs, _.extend({}, options, {unset: true})); - }, - - // Determine if the model has changed since the last `"change"` event. - // If you specify an attribute name, determine if that attribute has changed. - hasChanged: function(attr) { - if (attr == null) return !_.isEmpty(this.changed); - return _.has(this.changed, attr); - }, - - // Return an object containing all the attributes that have changed, or - // false if there are no changed attributes. Useful for determining what - // parts of a view need to be updated and/or what attributes need to be - // persisted to the server. Unset attributes will be set to undefined. - // You can also pass an attributes object to diff against the model, - // determining if there *would be* a change. - changedAttributes: function(diff) { - if (!diff) return this.hasChanged() ? _.clone(this.changed) : false; - var old = this._changing ? this._previousAttributes : this.attributes; - var changed = {}; - for (var attr in diff) { - var val = diff[attr]; - if (_.isEqual(old[attr], val)) continue; - changed[attr] = val; - } - return _.size(changed) ? changed : false; - }, - - // Get the previous value of an attribute, recorded at the time the last - // `"change"` event was fired. - previous: function(attr) { - if (attr == null || !this._previousAttributes) return null; - return this._previousAttributes[attr]; - }, - - // Get all of the attributes of the model at the time of the previous - // `"change"` event. - previousAttributes: function() { - return _.clone(this._previousAttributes); - }, - - // Fetch the model from the server, merging the response with the model's - // local attributes. Any changed attributes will trigger a "change" event. - fetch: function(options) { - options = _.extend({parse: true}, options); - var model = this; - var success = options.success; - options.success = function(resp) { - var serverAttrs = options.parse ? model.parse(resp, options) : resp; - if (!model.set(serverAttrs, options)) return false; - if (success) success.call(options.context, model, resp, options); - model.trigger('sync', model, resp, options); - }; - wrapError(this, options); - return this.sync('read', this, options); - }, - - // Set a hash of model attributes, and sync the model to the server. - // If the server returns an attributes hash that differs, the model's - // state will be `set` again. - save: function(key, val, options) { - // Handle both `"key", value` and `{key: value}` -style arguments. - var attrs; - if (key == null || typeof key === 'object') { - attrs = key; - options = val; - } else { - (attrs = {})[key] = val; - } - - options = _.extend({validate: true, parse: true}, options); - var wait = options.wait; - - // If we're not waiting and attributes exist, save acts as - // `set(attr).save(null, opts)` with validation. Otherwise, check if - // the model will be valid when the attributes, if any, are set. - if (attrs && !wait) { - if (!this.set(attrs, options)) return false; - } else { - if (!this._validate(attrs, options)) return false; - } - - // After a successful server-side save, the client is (optionally) - // updated with the server-side state. - var model = this; - var success = options.success; - var attributes = this.attributes; - options.success = function(resp) { - // Ensure attributes are restored during synchronous saves. - model.attributes = attributes; - var serverAttrs = options.parse ? model.parse(resp, options) : resp; - if (wait) serverAttrs = _.extend({}, attrs, serverAttrs); - if (serverAttrs && !model.set(serverAttrs, options)) return false; - if (success) success.call(options.context, model, resp, options); - model.trigger('sync', model, resp, options); - }; - wrapError(this, options); - - // Set temporary attributes if `{wait: true}` to properly find new ids. - if (attrs && wait) this.attributes = _.extend({}, attributes, attrs); - - var method = this.isNew() ? 'create' : (options.patch ? 'patch' : 'update'); - if (method === 'patch' && !options.attrs) options.attrs = attrs; - var xhr = this.sync(method, this, options); - - // Restore attributes. - this.attributes = attributes; - - return xhr; - }, - - // Destroy this model on the server if it was already persisted. - // Optimistically removes the model from its collection, if it has one. - // If `wait: true` is passed, waits for the server to respond before removal. - destroy: function(options) { - options = options ? _.clone(options) : {}; - var model = this; - var success = options.success; - var wait = options.wait; - - var destroy = function() { - model.stopListening(); - model.trigger('destroy', model, model.collection, options); - }; - - options.success = function(resp) { - if (wait) destroy(); - if (success) success.call(options.context, model, resp, options); - if (!model.isNew()) model.trigger('sync', model, resp, options); - }; - - var xhr = false; - if (this.isNew()) { - _.defer(options.success); - } else { - wrapError(this, options); - xhr = this.sync('delete', this, options); - } - if (!wait) destroy(); - return xhr; - }, - - // Default URL for the model's representation on the server -- if you're - // using Backbone's restful methods, override this to change the endpoint - // that will be called. - url: function() { - var base = - _.result(this, 'urlRoot') || - _.result(this.collection, 'url') || - urlError(); - if (this.isNew()) return base; - var id = this.get(this.idAttribute); - return base.replace(/[^\/]$/, '$&/') + encodeURIComponent(id); - }, - - // **parse** converts a response into the hash of attributes to be `set` on - // the model. The default implementation is just to pass the response along. - parse: function(resp, options) { - return resp; - }, - - // Create a new model with identical attributes to this one. - clone: function() { - return new this.constructor(this.attributes); - }, - - // A model is new if it has never been saved to the server, and lacks an id. - isNew: function() { - return !this.has(this.idAttribute); - }, - - // Check if the model is currently in a valid state. - isValid: function(options) { - return this._validate({}, _.defaults({validate: true}, options)); - }, - - // Run validation against the next complete set of model attributes, - // returning `true` if all is well. Otherwise, fire an `"invalid"` event. - _validate: function(attrs, options) { - if (!options.validate || !this.validate) return true; - attrs = _.extend({}, this.attributes, attrs); - var error = this.validationError = this.validate(attrs, options) || null; - if (!error) return true; - this.trigger('invalid', this, error, _.extend(options, {validationError: error})); - return false; - } - - }); - - // Underscore methods that we want to implement on the Model. - var modelMethods = { keys: 1, values: 1, pairs: 1, invert: 1, pick: 0, - omit: 0, chain: 1, isEmpty: 1 }; - - // Mix in each Underscore method as a proxy to `Model#attributes`. - addUnderscoreMethods(Model, modelMethods, 'attributes'); - - // Backbone.Collection - // ------------------- - - // If models tend to represent a single row of data, a Backbone Collection is - // more analogous to a table full of data ... or a small slice or page of that - // table, or a collection of rows that belong together for a particular reason - // -- all of the messages in this particular folder, all of the documents - // belonging to this particular author, and so on. Collections maintain - // indexes of their models, both in order, and for lookup by `id`. - - // Create a new **Collection**, perhaps to contain a specific type of `model`. - // If a `comparator` is specified, the Collection will maintain - // its models in sort order, as they're added and removed. - var Collection = Backbone.Collection = function(models, options) { - options || (options = {}); - if (options.model) this.model = options.model; - if (options.comparator !== void 0) this.comparator = options.comparator; - this._reset(); - this.initialize.apply(this, arguments); - if (models) this.reset(models, _.extend({silent: true}, options)); - }; - - // Default options for `Collection#set`. - var setOptions = {add: true, remove: true, merge: true}; - var addOptions = {add: true, remove: false}; - - // Define the Collection's inheritable methods. - _.extend(Collection.prototype, Events, { - - // The default model for a collection is just a **Backbone.Model**. - // This should be overridden in most cases. - model: Model, - - // Initialize is an empty function by default. Override it with your own - // initialization logic. - initialize: function(){}, - - // The JSON representation of a Collection is an array of the - // models' attributes. - toJSON: function(options) { - return this.map(function(model) { return model.toJSON(options); }); - }, - - // Proxy `Backbone.sync` by default. - sync: function() { - return Backbone.sync.apply(this, arguments); - }, - - // Add a model, or list of models to the set. - add: function(models, options) { - return this.set(models, _.extend({merge: false}, options, addOptions)); - }, - - // Remove a model, or a list of models from the set. - remove: function(models, options) { - options = _.extend({}, options); - var singular = !_.isArray(models); - models = singular ? [models] : _.clone(models); - var removed = this._removeModels(models, options); - if (!options.silent && removed) this.trigger('update', this, options); - return singular ? removed[0] : removed; - }, - - // Update a collection by `set`-ing a new list of models, adding new ones, - // removing models that are no longer present, and merging models that - // already exist in the collection, as necessary. Similar to **Model#set**, - // the core operation for updating the data contained by the collection. - set: function(models, options) { - options = _.defaults({}, options, setOptions); - if (options.parse && !this._isModel(models)) models = this.parse(models, options); - var singular = !_.isArray(models); - models = singular ? (models ? [models] : []) : models.slice(); - var id, model, attrs, existing, sort; - var at = options.at; - if (at != null) at = +at; - if (at < 0) at += this.length + 1; - var sortable = this.comparator && (at == null) && options.sort !== false; - var sortAttr = _.isString(this.comparator) ? this.comparator : null; - var toAdd = [], toRemove = [], modelMap = {}; - var add = options.add, merge = options.merge, remove = options.remove; - var order = !sortable && add && remove ? [] : false; - var orderChanged = false; - - // Turn bare objects into model references, and prevent invalid models - // from being added. - for (var i = 0; i < models.length; i++) { - attrs = models[i]; - - // If a duplicate is found, prevent it from being added and - // optionally merge it into the existing model. - if (existing = this.get(attrs)) { - if (remove) modelMap[existing.cid] = true; - if (merge && attrs !== existing) { - attrs = this._isModel(attrs) ? attrs.attributes : attrs; - if (options.parse) attrs = existing.parse(attrs, options); - existing.set(attrs, options); - if (sortable && !sort && existing.hasChanged(sortAttr)) sort = true; - } - models[i] = existing; - - // If this is a new, valid model, push it to the `toAdd` list. - } else if (add) { - model = models[i] = this._prepareModel(attrs, options); - if (!model) continue; - toAdd.push(model); - this._addReference(model, options); - } - - // Do not add multiple models with the same `id`. - model = existing || model; - if (!model) continue; - id = this.modelId(model.attributes); - if (order && (model.isNew() || !modelMap[id])) { - order.push(model); - - // Check to see if this is actually a new model at this index. - orderChanged = orderChanged || !this.models[i] || model.cid !== this.models[i].cid; - } - - modelMap[id] = true; - } - - // Remove nonexistent models if appropriate. - if (remove) { - for (var i = 0; i < this.length; i++) { - if (!modelMap[(model = this.models[i]).cid]) toRemove.push(model); - } - if (toRemove.length) this._removeModels(toRemove, options); - } - - // See if sorting is needed, update `length` and splice in new models. - if (toAdd.length || orderChanged) { - if (sortable) sort = true; - this.length += toAdd.length; - if (at != null) { - for (var i = 0; i < toAdd.length; i++) { - this.models.splice(at + i, 0, toAdd[i]); - } - } else { - if (order) this.models.length = 0; - var orderedModels = order || toAdd; - for (var i = 0; i < orderedModels.length; i++) { - this.models.push(orderedModels[i]); - } - } - } - - // Silently sort the collection if appropriate. - if (sort) this.sort({silent: true}); - - // Unless silenced, it's time to fire all appropriate add/sort events. - if (!options.silent) { - var addOpts = at != null ? _.clone(options) : options; - for (var i = 0; i < toAdd.length; i++) { - if (at != null) addOpts.index = at + i; - (model = toAdd[i]).trigger('add', model, this, addOpts); - } - if (sort || orderChanged) this.trigger('sort', this, options); - if (toAdd.length || toRemove.length) this.trigger('update', this, options); - } - - // Return the added (or merged) model (or models). - return singular ? models[0] : models; - }, - - // When you have more items than you want to add or remove individually, - // you can reset the entire set with a new list of models, without firing - // any granular `add` or `remove` events. Fires `reset` when finished. - // Useful for bulk operations and optimizations. - reset: function(models, options) { - options = options ? _.clone(options) : {}; - for (var i = 0; i < this.models.length; i++) { - this._removeReference(this.models[i], options); - } - options.previousModels = this.models; - this._reset(); - models = this.add(models, _.extend({silent: true}, options)); - if (!options.silent) this.trigger('reset', this, options); - return models; - }, - - // Add a model to the end of the collection. - push: function(model, options) { - return this.add(model, _.extend({at: this.length}, options)); - }, - - // Remove a model from the end of the collection. - pop: function(options) { - var model = this.at(this.length - 1); - return this.remove(model, options); - }, - - // Add a model to the beginning of the collection. - unshift: function(model, options) { - return this.add(model, _.extend({at: 0}, options)); - }, - - // Remove a model from the beginning of the collection. - shift: function(options) { - var model = this.at(0); - return this.remove(model, options); - }, - - // Slice out a sub-array of models from the collection. - slice: function() { - return slice.apply(this.models, arguments); - }, - - // Get a model from the set by id. - get: function(obj) { - if (obj == null) return void 0; - var id = this.modelId(this._isModel(obj) ? obj.attributes : obj); - return this._byId[obj] || this._byId[id] || this._byId[obj.cid]; - }, - - // Get the model at the given index. - at: function(index) { - if (index < 0) index += this.length; - return this.models[index]; - }, - - // Return models with matching attributes. Useful for simple cases of - // `filter`. - where: function(attrs, first) { - var matches = _.matches(attrs); - return this[first ? 'find' : 'filter'](function(model) { - return matches(model.attributes); - }); - }, - - // Return the first model with matching attributes. Useful for simple cases - // of `find`. - findWhere: function(attrs) { - return this.where(attrs, true); - }, - - // Force the collection to re-sort itself. You don't need to call this under - // normal circumstances, as the set will maintain sort order as each item - // is added. - sort: function(options) { - if (!this.comparator) throw new Error('Cannot sort a set without a comparator'); - options || (options = {}); - - // Run sort based on type of `comparator`. - if (_.isString(this.comparator) || this.comparator.length === 1) { - this.models = this.sortBy(this.comparator, this); - } else { - this.models.sort(_.bind(this.comparator, this)); - } - - if (!options.silent) this.trigger('sort', this, options); - return this; - }, - - // Pluck an attribute from each model in the collection. - pluck: function(attr) { - return _.invoke(this.models, 'get', attr); - }, - - // Fetch the default set of models for this collection, resetting the - // collection when they arrive. If `reset: true` is passed, the response - // data will be passed through the `reset` method instead of `set`. - fetch: function(options) { - options = _.extend({parse: true}, options); - var success = options.success; - var collection = this; - options.success = function(resp) { - var method = options.reset ? 'reset' : 'set'; - collection[method](resp, options); - if (success) success.call(options.context, collection, resp, options); - collection.trigger('sync', collection, resp, options); - }; - wrapError(this, options); - return this.sync('read', this, options); - }, - - // Create a new instance of a model in this collection. Add the model to the - // collection immediately, unless `wait: true` is passed, in which case we - // wait for the server to agree. - create: function(model, options) { - options = options ? _.clone(options) : {}; - var wait = options.wait; - model = this._prepareModel(model, options); - if (!model) return false; - if (!wait) this.add(model, options); - var collection = this; - var success = options.success; - options.success = function(model, resp, callbackOpts) { - if (wait) collection.add(model, callbackOpts); - if (success) success.call(callbackOpts.context, model, resp, callbackOpts); - }; - model.save(null, options); - return model; - }, - - // **parse** converts a response into a list of models to be added to the - // collection. The default implementation is just to pass it through. - parse: function(resp, options) { - return resp; - }, - - // Create a new collection with an identical list of models as this one. - clone: function() { - return new this.constructor(this.models, { - model: this.model, - comparator: this.comparator - }); - }, - - // Define how to uniquely identify models in the collection. - modelId: function (attrs) { - return attrs[this.model.prototype.idAttribute || 'id']; - }, - - // Private method to reset all internal state. Called when the collection - // is first initialized or reset. - _reset: function() { - this.length = 0; - this.models = []; - this._byId = {}; - }, - - // Prepare a hash of attributes (or other model) to be added to this - // collection. - _prepareModel: function(attrs, options) { - if (this._isModel(attrs)) { - if (!attrs.collection) attrs.collection = this; - return attrs; - } - options = options ? _.clone(options) : {}; - options.collection = this; - var model = new this.model(attrs, options); - if (!model.validationError) return model; - this.trigger('invalid', this, model.validationError, options); - return false; - }, - - // Internal method called by both remove and set. - // Returns removed models, or false if nothing is removed. - _removeModels: function(models, options) { - var removed = []; - for (var i = 0; i < models.length; i++) { - var model = this.get(models[i]); - if (!model) continue; - - var index = this.indexOf(model); - this.models.splice(index, 1); - this.length--; - - if (!options.silent) { - options.index = index; - model.trigger('remove', model, this, options); - } - - removed.push(model); - this._removeReference(model, options); - } - return removed.length ? removed : false; - }, - - // Method for checking whether an object should be considered a model for - // the purposes of adding to the collection. - _isModel: function (model) { - return model instanceof Model; - }, - - // Internal method to create a model's ties to a collection. - _addReference: function(model, options) { - this._byId[model.cid] = model; - var id = this.modelId(model.attributes); - if (id != null) this._byId[id] = model; - model.on('all', this._onModelEvent, this); - }, - - // Internal method to sever a model's ties to a collection. - _removeReference: function(model, options) { - delete this._byId[model.cid]; - var id = this.modelId(model.attributes); - if (id != null) delete this._byId[id]; - if (this === model.collection) delete model.collection; - model.off('all', this._onModelEvent, this); - }, - - // Internal method called every time a model in the set fires an event. - // Sets need to update their indexes when models change ids. All other - // events simply proxy through. "add" and "remove" events that originate - // in other collections are ignored. - _onModelEvent: function(event, model, collection, options) { - if ((event === 'add' || event === 'remove') && collection !== this) return; - if (event === 'destroy') this.remove(model, options); - if (event === 'change') { - var prevId = this.modelId(model.previousAttributes()); - var id = this.modelId(model.attributes); - if (prevId !== id) { - if (prevId != null) delete this._byId[prevId]; - if (id != null) this._byId[id] = model; - } - } - this.trigger.apply(this, arguments); - } - - }); - - // Underscore methods that we want to implement on the Collection. - // 90% of the core usefulness of Backbone Collections is actually implemented - // right here: - var collectionMethods = { forEach: 3, each: 3, map: 3, collect: 3, reduce: 4, - foldl: 4, inject: 4, reduceRight: 4, foldr: 4, find: 3, detect: 3, filter: 3, - select: 3, reject: 3, every: 3, all: 3, some: 3, any: 3, include: 2, - contains: 2, invoke: 0, max: 3, min: 3, toArray: 1, size: 1, first: 3, - head: 3, take: 3, initial: 3, rest: 3, tail: 3, drop: 3, last: 3, - without: 0, difference: 0, indexOf: 3, shuffle: 1, lastIndexOf: 3, - isEmpty: 1, chain: 1, sample: 3, partition: 3 }; - - // Mix in each Underscore method as a proxy to `Collection#models`. - addUnderscoreMethods(Collection, collectionMethods, 'models'); - - // Underscore methods that take a property name as an argument. - var attributeMethods = ['groupBy', 'countBy', 'sortBy', 'indexBy']; - - // Use attributes instead of properties. - _.each(attributeMethods, function(method) { - if (!_[method]) return; - Collection.prototype[method] = function(value, context) { - var iterator = _.isFunction(value) ? value : function(model) { - return model.get(value); - }; - return _[method](this.models, iterator, context); - }; - }); - - // Backbone.View - // ------------- - - // Backbone Views are almost more convention than they are actual code. A View - // is simply a JavaScript object that represents a logical chunk of UI in the - // DOM. This might be a single item, an entire list, a sidebar or panel, or - // even the surrounding frame which wraps your whole app. Defining a chunk of - // UI as a **View** allows you to define your DOM events declaratively, without - // having to worry about render order ... and makes it easy for the view to - // react to specific changes in the state of your models. - - // Creating a Backbone.View creates its initial element outside of the DOM, - // if an existing element is not provided... - var View = Backbone.View = function(options) { - this.cid = _.uniqueId('view'); - _.extend(this, _.pick(options, viewOptions)); - this._ensureElement(); - this.initialize.apply(this, arguments); - }; - - // Cached regex to split keys for `delegate`. - var delegateEventSplitter = /^(\S+)\s*(.*)$/; - - // List of view options to be merged as properties. - var viewOptions = ['model', 'collection', 'el', 'id', 'attributes', 'className', 'tagName', 'events']; - - // Set up all inheritable **Backbone.View** properties and methods. - _.extend(View.prototype, Events, { - - // The default `tagName` of a View's element is `"div"`. - tagName: 'div', - - // jQuery delegate for element lookup, scoped to DOM elements within the - // current view. This should be preferred to global lookups where possible. - $: function(selector) { - return this.$el.find(selector); - }, - - // Initialize is an empty function by default. Override it with your own - // initialization logic. - initialize: function(){}, - - // **render** is the core function that your view should override, in order - // to populate its element (`this.el`), with the appropriate HTML. The - // convention is for **render** to always return `this`. - render: function() { - return this; - }, - - // Remove this view by taking the element out of the DOM, and removing any - // applicable Backbone.Events listeners. - remove: function() { - this._removeElement(); - this.stopListening(); - return this; - }, - - // Remove this view's element from the document and all event listeners - // attached to it. Exposed for subclasses using an alternative DOM - // manipulation API. - _removeElement: function() { - this.$el.remove(); - }, - - // Change the view's element (`this.el` property) and re-delegate the - // view's events on the new element. - setElement: function(element) { - this.undelegateEvents(); - this._setElement(element); - this.delegateEvents(); - return this; - }, - - // Creates the `this.el` and `this.$el` references for this view using the - // given `el`. `el` can be a CSS selector or an HTML string, a jQuery - // context or an element. Subclasses can override this to utilize an - // alternative DOM manipulation API and are only required to set the - // `this.el` property. - _setElement: function(el) { - this.$el = el instanceof Backbone.$ ? el : Backbone.$(el); - this.el = this.$el[0]; - }, - - // Set callbacks, where `this.events` is a hash of - // - // *{"event selector": "callback"}* - // - // { - // 'mousedown .title': 'edit', - // 'click .button': 'save', - // 'click .open': function(e) { ... } - // } - // - // pairs. Callbacks will be bound to the view, with `this` set properly. - // Uses event delegation for efficiency. - // Omitting the selector binds the event to `this.el`. - delegateEvents: function(events) { - events || (events = _.result(this, 'events')); - if (!events) return this; - this.undelegateEvents(); - for (var key in events) { - var method = events[key]; - if (!_.isFunction(method)) method = this[method]; - if (!method) continue; - var match = key.match(delegateEventSplitter); - this.delegate(match[1], match[2], _.bind(method, this)); - } - return this; - }, - - // Add a single event listener to the view's element (or a child element - // using `selector`). This only works for delegate-able events: not `focus`, - // `blur`, and not `change`, `submit`, and `reset` in Internet Explorer. - delegate: function(eventName, selector, listener) { - this.$el.on(eventName + '.delegateEvents' + this.cid, selector, listener); - return this; - }, - - // Clears all callbacks previously bound to the view by `delegateEvents`. - // You usually don't need to use this, but may wish to if you have multiple - // Backbone views attached to the same DOM element. - undelegateEvents: function() { - if (this.$el) this.$el.off('.delegateEvents' + this.cid); - return this; - }, - - // A finer-grained `undelegateEvents` for removing a single delegated event. - // `selector` and `listener` are both optional. - undelegate: function(eventName, selector, listener) { - this.$el.off(eventName + '.delegateEvents' + this.cid, selector, listener); - return this; - }, - - // Produces a DOM element to be assigned to your view. Exposed for - // subclasses using an alternative DOM manipulation API. - _createElement: function(tagName) { - return document.createElement(tagName); - }, - - // Ensure that the View has a DOM element to render into. - // If `this.el` is a string, pass it through `$()`, take the first - // matching element, and re-assign it to `el`. Otherwise, create - // an element from the `id`, `className` and `tagName` properties. - _ensureElement: function() { - if (!this.el) { - var attrs = _.extend({}, _.result(this, 'attributes')); - if (this.id) attrs.id = _.result(this, 'id'); - if (this.className) attrs['class'] = _.result(this, 'className'); - this.setElement(this._createElement(_.result(this, 'tagName'))); - this._setAttributes(attrs); - } else { - this.setElement(_.result(this, 'el')); - } - }, - - // Set attributes from a hash on this view's element. Exposed for - // subclasses using an alternative DOM manipulation API. - _setAttributes: function(attributes) { - this.$el.attr(attributes); - } - - }); - - // Backbone.sync - // ------------- - - // Override this function to change the manner in which Backbone persists - // models to the server. You will be passed the type of request, and the - // model in question. By default, makes a RESTful Ajax request - // to the model's `url()`. Some possible customizations could be: - // - // * Use `setTimeout` to batch rapid-fire updates into a single request. - // * Send up the models as XML instead of JSON. - // * Persist models via WebSockets instead of Ajax. - // - // Turn on `Backbone.emulateHTTP` in order to send `PUT` and `DELETE` requests - // as `POST`, with a `_method` parameter containing the true HTTP method, - // as well as all requests with the body as `application/x-www-form-urlencoded` - // instead of `application/json` with the model in a param named `model`. - // Useful when interfacing with server-side languages like **PHP** that make - // it difficult to read the body of `PUT` requests. - Backbone.sync = function(method, model, options) { - var type = methodMap[method]; - - // Default options, unless specified. - _.defaults(options || (options = {}), { - emulateHTTP: Backbone.emulateHTTP, - emulateJSON: Backbone.emulateJSON - }); - - // Default JSON-request options. - var params = {type: type, dataType: 'json'}; - - // Ensure that we have a URL. - if (!options.url) { - params.url = _.result(model, 'url') || urlError(); - } - - // Ensure that we have the appropriate request data. - if (options.data == null && model && (method === 'create' || method === 'update' || method === 'patch')) { - params.contentType = 'application/json'; - params.data = JSON.stringify(options.attrs || model.toJSON(options)); - } - - // For older servers, emulate JSON by encoding the request into an HTML-form. - if (options.emulateJSON) { - params.contentType = 'application/x-www-form-urlencoded'; - params.data = params.data ? {model: params.data} : {}; - } - - // For older servers, emulate HTTP by mimicking the HTTP method with `_method` - // And an `X-HTTP-Method-Override` header. - if (options.emulateHTTP && (type === 'PUT' || type === 'DELETE' || type === 'PATCH')) { - params.type = 'POST'; - if (options.emulateJSON) params.data._method = type; - var beforeSend = options.beforeSend; - options.beforeSend = function(xhr) { - xhr.setRequestHeader('X-HTTP-Method-Override', type); - if (beforeSend) return beforeSend.apply(this, arguments); - }; - } - - // Don't process data on a non-GET request. - if (params.type !== 'GET' && !options.emulateJSON) { - params.processData = false; - } - - // Pass along `textStatus` and `errorThrown` from jQuery. - var error = options.error; - options.error = function(xhr, textStatus, errorThrown) { - options.textStatus = textStatus; - options.errorThrown = errorThrown; - if (error) error.call(options.context, xhr, textStatus, errorThrown); - }; - - // Make the request, allowing the user to override any Ajax options. - var xhr = options.xhr = Backbone.ajax(_.extend(params, options)); - model.trigger('request', model, xhr, options); - return xhr; - }; - - // Map from CRUD to HTTP for our default `Backbone.sync` implementation. - var methodMap = { - 'create': 'POST', - 'update': 'PUT', - 'patch': 'PATCH', - 'delete': 'DELETE', - 'read': 'GET' - }; - - // Set the default implementation of `Backbone.ajax` to proxy through to `$`. - // Override this if you'd like to use a different library. - Backbone.ajax = function() { - return Backbone.$.ajax.apply(Backbone.$, arguments); - }; - - // Backbone.Router - // --------------- - - // Routers map faux-URLs to actions, and fire events when routes are - // matched. Creating a new one sets its `routes` hash, if not set statically. - var Router = Backbone.Router = function(options) { - options || (options = {}); - if (options.routes) this.routes = options.routes; - this._bindRoutes(); - this.initialize.apply(this, arguments); - }; - - // Cached regular expressions for matching named param parts and splatted - // parts of route strings. - var optionalParam = /\((.*?)\)/g; - var namedParam = /(\(\?)?:\w+/g; - var splatParam = /\*\w+/g; - var escapeRegExp = /[\-{}\[\]+?.,\\\^$|#\s]/g; - - // Set up all inheritable **Backbone.Router** properties and methods. - _.extend(Router.prototype, Events, { - - // Initialize is an empty function by default. Override it with your own - // initialization logic. - initialize: function(){}, - - // Manually bind a single named route to a callback. For example: - // - // this.route('search/:query/p:num', 'search', function(query, num) { - // ... - // }); - // - route: function(route, name, callback) { - if (!_.isRegExp(route)) route = this._routeToRegExp(route); - if (_.isFunction(name)) { - callback = name; - name = ''; - } - if (!callback) callback = this[name]; - var router = this; - Backbone.history.route(route, function(fragment) { - var args = router._extractParameters(route, fragment); - if (router.execute(callback, args, name) !== false) { - router.trigger.apply(router, ['route:' + name].concat(args)); - router.trigger('route', name, args); - Backbone.history.trigger('route', router, name, args); - } - }); - return this; - }, - - // Execute a route handler with the provided parameters. This is an - // excellent place to do pre-route setup or post-route cleanup. - execute: function(callback, args, name) { - if (callback) callback.apply(this, args); - }, - - // Simple proxy to `Backbone.history` to save a fragment into the history. - navigate: function(fragment, options) { - Backbone.history.navigate(fragment, options); - return this; - }, - - // Bind all defined routes to `Backbone.history`. We have to reverse the - // order of the routes here to support behavior where the most general - // routes can be defined at the bottom of the route map. - _bindRoutes: function() { - if (!this.routes) return; - this.routes = _.result(this, 'routes'); - var route, routes = _.keys(this.routes); - while ((route = routes.pop()) != null) { - this.route(route, this.routes[route]); - } - }, - - // Convert a route string into a regular expression, suitable for matching - // against the current location hash. - _routeToRegExp: function(route) { - route = route.replace(escapeRegExp, '\\$&') - .replace(optionalParam, '(?:$1)?') - .replace(namedParam, function(match, optional) { - return optional ? match : '([^/?]+)'; - }) - .replace(splatParam, '([^?]*?)'); - return new RegExp('^' + route + '(?:\\?([\\s\\S]*))?$'); - }, - - // Given a route, and a URL fragment that it matches, return the array of - // extracted decoded parameters. Empty or unmatched parameters will be - // treated as `null` to normalize cross-browser behavior. - _extractParameters: function(route, fragment) { - var params = route.exec(fragment).slice(1); - return _.map(params, function(param, i) { - // Don't decode the search params. - if (i === params.length - 1) return param || null; - return param ? decodeURIComponent(param) : null; - }); - } - - }); - - // Backbone.History - // ---------------- - - // Handles cross-browser history management, based on either - // [pushState](http://diveintohtml5.info/history.html) and real URLs, or - // [onhashchange](https://developer.mozilla.org/en-US/docs/DOM/window.onhashchange) - // and URL fragments. If the browser supports neither (old IE, natch), - // falls back to polling. - var History = Backbone.History = function() { - this.handlers = []; - _.bindAll(this, 'checkUrl'); - - // Ensure that `History` can be used outside of the browser. - if (typeof window !== 'undefined') { - this.location = window.location; - this.history = window.history; - } - }; - - // Cached regex for stripping a leading hash/slash and trailing space. - var routeStripper = /^[#\/]|\s+$/g; - - // Cached regex for stripping leading and trailing slashes. - var rootStripper = /^\/+|\/+$/g; - - // Cached regex for stripping urls of hash. - var pathStripper = /#.*$/; - - // Has the history handling already been started? - History.started = false; - - // Set up all inheritable **Backbone.History** properties and methods. - _.extend(History.prototype, Events, { - - // The default interval to poll for hash changes, if necessary, is - // twenty times a second. - interval: 50, - - // Are we at the app root? - atRoot: function() { - var path = this.location.pathname.replace(/[^\/]$/, '$&/'); - return path === this.root && !this.getSearch(); - }, - - // Does the pathname match the root? - matchRoot: function() { - var path = this.decodeFragment(this.location.pathname); - var root = path.slice(0, this.root.length - 1) + '/'; - return root === this.root; - }, - - // Unicode characters in `location.pathname` are percent encoded so they're - // decoded for comparison. `%25` should not be decoded since it may be part - // of an encoded parameter. - decodeFragment: function(fragment) { - return decodeURI(fragment.replace(/%25/g, '%2525')); - }, - - // In IE6, the hash fragment and search params are incorrect if the - // fragment contains `?`. - getSearch: function() { - var match = this.location.href.replace(/#.*/, '').match(/\?.+/); - return match ? match[0] : ''; - }, - - // Gets the true hash value. Cannot use location.hash directly due to bug - // in Firefox where location.hash will always be decoded. - getHash: function(window) { - var match = (window || this).location.href.match(/#(.*)$/); - return match ? match[1] : ''; - }, - - // Get the pathname and search params, without the root. - getPath: function() { - var path = this.decodeFragment( - this.location.pathname + this.getSearch() - ).slice(this.root.length - 1); - return path.charAt(0) === '/' ? path.slice(1) : path; - }, - - // Get the cross-browser normalized URL fragment from the path or hash. - getFragment: function(fragment) { - if (fragment == null) { - if (this._usePushState || !this._wantsHashChange) { - fragment = this.getPath(); - } else { - fragment = this.getHash(); - } - } - return fragment.replace(routeStripper, ''); - }, - - // Start the hash change handling, returning `true` if the current URL matches - // an existing route, and `false` otherwise. - start: function(options) { - if (History.started) throw new Error('Backbone.history has already been started'); - History.started = true; - - // Figure out the initial configuration. Do we need an iframe? - // Is pushState desired ... is it available? - this.options = _.extend({root: '/'}, this.options, options); - this.root = this.options.root; - this._wantsHashChange = this.options.hashChange !== false; - this._hasHashChange = 'onhashchange' in window; - this._useHashChange = this._wantsHashChange && this._hasHashChange; - this._wantsPushState = !!this.options.pushState; - this._hasPushState = !!(this.history && this.history.pushState); - this._usePushState = this._wantsPushState && this._hasPushState; - this.fragment = this.getFragment(); - - // Normalize root to always include a leading and trailing slash. - this.root = ('/' + this.root + '/').replace(rootStripper, '/'); - - // Transition from hashChange to pushState or vice versa if both are - // requested. - if (this._wantsHashChange && this._wantsPushState) { - - // If we've started off with a route from a `pushState`-enabled - // browser, but we're currently in a browser that doesn't support it... - if (!this._hasPushState && !this.atRoot()) { - var root = this.root.slice(0, -1) || '/'; - this.location.replace(root + '#' + this.getPath()); - // Return immediately as browser will do redirect to new url - return true; - - // Or if we've started out with a hash-based route, but we're currently - // in a browser where it could be `pushState`-based instead... - } else if (this._hasPushState && this.atRoot()) { - this.navigate(this.getHash(), {replace: true}); - } - - } - - // Proxy an iframe to handle location events if the browser doesn't - // support the `hashchange` event, HTML5 history, or the user wants - // `hashChange` but not `pushState`. - if (!this._hasHashChange && this._wantsHashChange && !this._usePushState) { - this.iframe = document.createElement('iframe'); - this.iframe.src = 'javascript:0'; - this.iframe.style.display = 'none'; - this.iframe.tabIndex = -1; - var body = document.body; - // Using `appendChild` will throw on IE < 9 if the document is not ready. - var iWindow = body.insertBefore(this.iframe, body.firstChild).contentWindow; - iWindow.document.open(); - iWindow.document.close(); - iWindow.location.hash = '#' + this.fragment; - } - - // Add a cross-platform `addEventListener` shim for older browsers. - var addEventListener = window.addEventListener || function (eventName, listener) { - return attachEvent('on' + eventName, listener); - }; - - // Depending on whether we're using pushState or hashes, and whether - // 'onhashchange' is supported, determine how we check the URL state. - if (this._usePushState) { - addEventListener('popstate', this.checkUrl, false); - } else if (this._useHashChange && !this.iframe) { - addEventListener('hashchange', this.checkUrl, false); - } else if (this._wantsHashChange) { - this._checkUrlInterval = setInterval(this.checkUrl, this.interval); - } - - if (!this.options.silent) return this.loadUrl(); - }, - - // Disable Backbone.history, perhaps temporarily. Not useful in a real app, - // but possibly useful for unit testing Routers. - stop: function() { - // Add a cross-platform `removeEventListener` shim for older browsers. - var removeEventListener = window.removeEventListener || function (eventName, listener) { - return detachEvent('on' + eventName, listener); - }; - - // Remove window listeners. - if (this._usePushState) { - removeEventListener('popstate', this.checkUrl, false); - } else if (this._useHashChange && !this.iframe) { - removeEventListener('hashchange', this.checkUrl, false); - } - - // Clean up the iframe if necessary. - if (this.iframe) { - document.body.removeChild(this.iframe); - this.iframe = null; - } - - // Some environments will throw when clearing an undefined interval. - if (this._checkUrlInterval) clearInterval(this._checkUrlInterval); - History.started = false; - }, - - // Add a route to be tested when the fragment changes. Routes added later - // may override previous routes. - route: function(route, callback) { - this.handlers.unshift({route: route, callback: callback}); - }, - - // Checks the current URL to see if it has changed, and if it has, - // calls `loadUrl`, normalizing across the hidden iframe. - checkUrl: function(e) { - var current = this.getFragment(); - - // If the user pressed the back button, the iframe's hash will have - // changed and we should use that for comparison. - if (current === this.fragment && this.iframe) { - current = this.getHash(this.iframe.contentWindow); - } - - if (current === this.fragment) return false; - if (this.iframe) this.navigate(current); - this.loadUrl(); - }, - - // Attempt to load the current URL fragment. If a route succeeds with a - // match, returns `true`. If no defined routes matches the fragment, - // returns `false`. - loadUrl: function(fragment) { - // If the root doesn't match, no routes can match either. - if (!this.matchRoot()) return false; - fragment = this.fragment = this.getFragment(fragment); - return _.any(this.handlers, function(handler) { - if (handler.route.test(fragment)) { - handler.callback(fragment); - return true; - } - }); - }, - - // Save a fragment into the hash history, or replace the URL state if the - // 'replace' option is passed. You are responsible for properly URL-encoding - // the fragment in advance. - // - // The options object can contain `trigger: true` if you wish to have the - // route callback be fired (not usually desirable), or `replace: true`, if - // you wish to modify the current URL without adding an entry to the history. - navigate: function(fragment, options) { - if (!History.started) return false; - if (!options || options === true) options = {trigger: !!options}; - - // Normalize the fragment. - fragment = this.getFragment(fragment || ''); - - // Don't include a trailing slash on the root. - var root = this.root; - if (fragment === '' || fragment.charAt(0) === '?') { - root = root.slice(0, -1) || '/'; - } - var url = root + fragment; - - // Strip the hash and decode for matching. - fragment = this.decodeFragment(fragment.replace(pathStripper, '')); - - if (this.fragment === fragment) return; - this.fragment = fragment; - - // If pushState is available, we use it to set the fragment as a real URL. - if (this._usePushState) { - this.history[options.replace ? 'replaceState' : 'pushState']({}, document.title, url); - - // If hash changes haven't been explicitly disabled, update the hash - // fragment to store history. - } else if (this._wantsHashChange) { - this._updateHash(this.location, fragment, options.replace); - if (this.iframe && (fragment !== this.getHash(this.iframe.contentWindow))) { - var iWindow = this.iframe.contentWindow; - - // Opening and closing the iframe tricks IE7 and earlier to push a - // history entry on hash-tag change. When replace is true, we don't - // want this. - if (!options.replace) { - iWindow.document.open(); - iWindow.document.close(); - } - - this._updateHash(iWindow.location, fragment, options.replace); - } - - // If you've told us that you explicitly don't want fallback hashchange- - // based history, then `navigate` becomes a page refresh. - } else { - return this.location.assign(url); - } - if (options.trigger) return this.loadUrl(fragment); - }, - - // Update the hash location, either replacing the current entry, or adding - // a new one to the browser history. - _updateHash: function(location, fragment, replace) { - if (replace) { - var href = location.href.replace(/(javascript:|#).*$/, ''); - location.replace(href + '#' + fragment); - } else { - // Some browsers require that `hash` contains a leading #. - location.hash = '#' + fragment; - } - } - - }); - - // Create the default Backbone.history. - Backbone.history = new History; - - // Helpers - // ------- - - // Helper function to correctly set up the prototype chain for subclasses. - // Similar to `goog.inherits`, but uses a hash of prototype properties and - // class properties to be extended. - var extend = function(protoProps, staticProps) { - var parent = this; - var child; - - // The constructor function for the new subclass is either defined by you - // (the "constructor" property in your `extend` definition), or defaulted - // by us to simply call the parent constructor. - if (protoProps && _.has(protoProps, 'constructor')) { - child = protoProps.constructor; - } else { - child = function(){ return parent.apply(this, arguments); }; - } - - // Add static properties to the constructor function, if supplied. - _.extend(child, parent, staticProps); - - // Set the prototype chain to inherit from `parent`, without calling - // `parent` constructor function. - var Surrogate = function(){ this.constructor = child; }; - Surrogate.prototype = parent.prototype; - child.prototype = new Surrogate; - - // Add prototype properties (instance properties) to the subclass, - // if supplied. - if (protoProps) _.extend(child.prototype, protoProps); - - // Set a convenience property in case the parent's prototype is needed - // later. - child.__super__ = parent.prototype; - - return child; - }; - - // Set up inheritance for the model, collection, router, view and history. - Model.extend = Collection.extend = Router.extend = View.extend = History.extend = extend; - - // Throw an error when a URL is needed, and none is supplied. - var urlError = function() { - throw new Error('A "url" property or function must be specified'); - }; - - // Wrap an optional error callback with a fallback error event. - var wrapError = function(model, options) { - var error = options.error; - options.error = function(resp) { - if (error) error.call(options.context, model, resp, options); - model.trigger('error', model, resp, options); - }; - }; - - return Backbone; - -})); + // Establish the root object, `window` (`self`) in the browser, or `global` on the server. + // We use `self` instead of `window` for `WebWorker` support. + var root = typeof self == 'object' && self.self === self && self || + typeof global == 'object' && global.global === global && global; + + // Set up Backbone appropriately for the environment. Start with AMD. + if (typeof define === 'function' && define.amd) { + define(['underscore', 'jquery', 'exports'], function(_, $, exports) { + // Export global even in AMD case in case this script is loaded with + // others that may still expect a global Backbone. + root.Backbone = factory(root, exports, _, $); + }); + + // Next for Node.js or CommonJS. jQuery may not be needed as a module. + } else if (typeof exports !== 'undefined') { + var _ = require('underscore'), $; + try { $ = require('jquery'); } catch (e) {} + factory(root, exports, _, $); + + // Finally, as a browser global. + } else { + root.Backbone = factory(root, {}, root._, root.jQuery || root.Zepto || root.ender || root.$); + } + +})(function(root, Backbone, _, $) { + + // Initial Setup + // ------------- + + // Save the previous value of the `Backbone` variable, so that it can be + // restored later on, if `noConflict` is used. + var previousBackbone = root.Backbone; + + // Create a local reference to a common array method we'll want to use later. + var slice = Array.prototype.slice; + + // Current version of the library. Keep in sync with `package.json`. + Backbone.VERSION = '1.4.0'; + + // For Backbone's purposes, jQuery, Zepto, Ender, or My Library (kidding) owns + // the `$` variable. + Backbone.$ = $; + + // Runs Backbone.js in *noConflict* mode, returning the `Backbone` variable + // to its previous owner. Returns a reference to this Backbone object. + Backbone.noConflict = function() { + root.Backbone = previousBackbone; + return this; + }; + + // Turn on `emulateHTTP` to support legacy HTTP servers. Setting this option + // will fake `"PATCH"`, `"PUT"` and `"DELETE"` requests via the `_method` parameter and + // set a `X-Http-Method-Override` header. + Backbone.emulateHTTP = false; + + // Turn on `emulateJSON` to support legacy servers that can't deal with direct + // `application/json` requests ... this will encode the body as + // `application/x-www-form-urlencoded` instead and will send the model in a + // form param named `model`. + Backbone.emulateJSON = false; + + // Backbone.Events + // --------------- + + // A module that can be mixed in to *any object* in order to provide it with + // a custom event channel. You may bind a callback to an event with `on` or + // remove with `off`; `trigger`-ing an event fires all callbacks in + // succession. + // + // var object = {}; + // _.extend(object, Backbone.Events); + // object.on('expand', function(){ alert('expanded'); }); + // object.trigger('expand'); + // + var Events = Backbone.Events = {}; + + // Regular expression used to split event strings. + var eventSplitter = /\s+/; + + // A private global variable to share between listeners and listenees. + var _listening; + + // Iterates over the standard `event, callback` (as well as the fancy multiple + // space-separated events `"change blur", callback` and jQuery-style event + // maps `{event: callback}`). + var eventsApi = function(iteratee, events, name, callback, opts) { + var i = 0, names; + if (name && typeof name === 'object') { + // Handle event maps. + if (callback !== void 0 && 'context' in opts && opts.context === void 0) opts.context = callback; + for (names = _.keys(name); i < names.length ; i++) { + events = eventsApi(iteratee, events, names[i], name[names[i]], opts); + } + } else if (name && eventSplitter.test(name)) { + // Handle space-separated event names by delegating them individually. + for (names = name.split(eventSplitter); i < names.length; i++) { + events = iteratee(events, names[i], callback, opts); + } + } else { + // Finally, standard events. + events = iteratee(events, name, callback, opts); + } + return events; + }; + + // Bind an event to a `callback` function. Passing `"all"` will bind + // the callback to all events fired. + Events.on = function(name, callback, context) { + this._events = eventsApi(onApi, this._events || {}, name, callback, { + context: context, + ctx: this, + listening: _listening + }); + + if (_listening) { + var listeners = this._listeners || (this._listeners = {}); + listeners[_listening.id] = _listening; + // Allow the listening to use a counter, instead of tracking + // callbacks for library interop + _listening.interop = false; + } + + return this; + }; + + // Inversion-of-control versions of `on`. Tell *this* object to listen to + // an event in another object... keeping track of what it's listening to + // for easier unbinding later. + Events.listenTo = function(obj, name, callback) { + if (!obj) return this; + var id = obj._listenId || (obj._listenId = _.uniqueId('l')); + var listeningTo = this._listeningTo || (this._listeningTo = {}); + var listening = _listening = listeningTo[id]; + + // This object is not listening to any other events on `obj` yet. + // Setup the necessary references to track the listening callbacks. + if (!listening) { + this._listenId || (this._listenId = _.uniqueId('l')); + listening = _listening = listeningTo[id] = new Listening(this, obj); + } + + // Bind callbacks on obj. + var error = tryCatchOn(obj, name, callback, this); + _listening = void 0; + + if (error) throw error; + // If the target obj is not Backbone.Events, track events manually. + if (listening.interop) listening.on(name, callback); + + return this; + }; + + // The reducing API that adds a callback to the `events` object. + var onApi = function(events, name, callback, options) { + if (callback) { + var handlers = events[name] || (events[name] = []); + var context = options.context, ctx = options.ctx, listening = options.listening; + if (listening) listening.count++; + + handlers.push({callback: callback, context: context, ctx: context || ctx, listening: listening}); + } + return events; + }; + + // An try-catch guarded #on function, to prevent poisoning the global + // `_listening` variable. + var tryCatchOn = function(obj, name, callback, context) { + try { + obj.on(name, callback, context); + } catch (e) { + return e; + } + }; + + // Remove one or many callbacks. If `context` is null, removes all + // callbacks with that function. If `callback` is null, removes all + // callbacks for the event. If `name` is null, removes all bound + // callbacks for all events. + Events.off = function(name, callback, context) { + if (!this._events) return this; + this._events = eventsApi(offApi, this._events, name, callback, { + context: context, + listeners: this._listeners + }); + + return this; + }; + + // Tell this object to stop listening to either specific events ... or + // to every object it's currently listening to. + Events.stopListening = function(obj, name, callback) { + var listeningTo = this._listeningTo; + if (!listeningTo) return this; + + var ids = obj ? [obj._listenId] : _.keys(listeningTo); + for (var i = 0; i < ids.length; i++) { + var listening = listeningTo[ids[i]]; + + // If listening doesn't exist, this object is not currently + // listening to obj. Break out early. + if (!listening) break; + + listening.obj.off(name, callback, this); + if (listening.interop) listening.off(name, callback); + } + if (_.isEmpty(listeningTo)) this._listeningTo = void 0; + + return this; + }; + + // The reducing API that removes a callback from the `events` object. + var offApi = function(events, name, callback, options) { + if (!events) return; + + var context = options.context, listeners = options.listeners; + var i = 0, names; + + // Delete all event listeners and "drop" events. + if (!name && !context && !callback) { + for (names = _.keys(listeners); i < names.length; i++) { + listeners[names[i]].cleanup(); + } + return; + } + + names = name ? [name] : _.keys(events); + for (; i < names.length; i++) { + name = names[i]; + var handlers = events[name]; + + // Bail out if there are no events stored. + if (!handlers) break; + + // Find any remaining events. + var remaining = []; + for (var j = 0; j < handlers.length; j++) { + var handler = handlers[j]; + if ( + callback && callback !== handler.callback && + callback !== handler.callback._callback || + context && context !== handler.context + ) { + remaining.push(handler); + } else { + var listening = handler.listening; + if (listening) listening.off(name, callback); + } + } + + // Replace events if there are any remaining. Otherwise, clean up. + if (remaining.length) { + events[name] = remaining; + } else { + delete events[name]; + } + } + + return events; + }; + + // Bind an event to only be triggered a single time. After the first time + // the callback is invoked, its listener will be removed. If multiple events + // are passed in using the space-separated syntax, the handler will fire + // once for each event, not once for a combination of all events. + Events.once = function(name, callback, context) { + // Map the event into a `{event: once}` object. + var events = eventsApi(onceMap, {}, name, callback, this.off.bind(this)); + if (typeof name === 'string' && context == null) callback = void 0; + return this.on(events, callback, context); + }; + + // Inversion-of-control versions of `once`. + Events.listenToOnce = function(obj, name, callback) { + // Map the event into a `{event: once}` object. + var events = eventsApi(onceMap, {}, name, callback, this.stopListening.bind(this, obj)); + return this.listenTo(obj, events); + }; + + // Reduces the event callbacks into a map of `{event: onceWrapper}`. + // `offer` unbinds the `onceWrapper` after it has been called. + var onceMap = function(map, name, callback, offer) { + if (callback) { + var once = map[name] = _.once(function() { + offer(name, once); + callback.apply(this, arguments); + }); + once._callback = callback; + } + return map; + }; + + // Trigger one or many events, firing all bound callbacks. Callbacks are + // passed the same arguments as `trigger` is, apart from the event name + // (unless you're listening on `"all"`, which will cause your callback to + // receive the true name of the event as the first argument). + Events.trigger = function(name) { + if (!this._events) return this; + + var length = Math.max(0, arguments.length - 1); + var args = Array(length); + for (var i = 0; i < length; i++) args[i] = arguments[i + 1]; + + eventsApi(triggerApi, this._events, name, void 0, args); + return this; + }; + + // Handles triggering the appropriate event callbacks. + var triggerApi = function(objEvents, name, callback, args) { + if (objEvents) { + var events = objEvents[name]; + var allEvents = objEvents.all; + if (events && allEvents) allEvents = allEvents.slice(); + if (events) triggerEvents(events, args); + if (allEvents) triggerEvents(allEvents, [name].concat(args)); + } + return objEvents; + }; + + // A difficult-to-believe, but optimized internal dispatch function for + // triggering events. Tries to keep the usual cases speedy (most internal + // Backbone events have 3 arguments). + var triggerEvents = function(events, args) { + var ev, i = -1, l = events.length, a1 = args[0], a2 = args[1], a3 = args[2]; + switch (args.length) { + case 0: while (++i < l) (ev = events[i]).callback.call(ev.ctx); return; + case 1: while (++i < l) (ev = events[i]).callback.call(ev.ctx, a1); return; + case 2: while (++i < l) (ev = events[i]).callback.call(ev.ctx, a1, a2); return; + case 3: while (++i < l) (ev = events[i]).callback.call(ev.ctx, a1, a2, a3); return; + default: while (++i < l) (ev = events[i]).callback.apply(ev.ctx, args); return; + } + }; + + // A listening class that tracks and cleans up memory bindings + // when all callbacks have been offed. + var Listening = function(listener, obj) { + this.id = listener._listenId; + this.listener = listener; + this.obj = obj; + this.interop = true; + this.count = 0; + this._events = void 0; + }; + + Listening.prototype.on = Events.on; + + // Offs a callback (or several). + // Uses an optimized counter if the listenee uses Backbone.Events. + // Otherwise, falls back to manual tracking to support events + // library interop. + Listening.prototype.off = function(name, callback) { + var cleanup; + if (this.interop) { + this._events = eventsApi(offApi, this._events, name, callback, { + context: void 0, + listeners: void 0 + }); + cleanup = !this._events; + } else { + this.count--; + cleanup = this.count === 0; + } + if (cleanup) this.cleanup(); + }; + + // Cleans up memory bindings between the listener and the listenee. + Listening.prototype.cleanup = function() { + delete this.listener._listeningTo[this.obj._listenId]; + if (!this.interop) delete this.obj._listeners[this.id]; + }; + + // Aliases for backwards compatibility. + Events.bind = Events.on; + Events.unbind = Events.off; + + // Allow the `Backbone` object to serve as a global event bus, for folks who + // want global "pubsub" in a convenient place. + _.extend(Backbone, Events); + + // Backbone.Model + // -------------- + + // Backbone **Models** are the basic data object in the framework -- + // frequently representing a row in a table in a database on your server. + // A discrete chunk of data and a bunch of useful, related methods for + // performing computations and transformations on that data. + + // Create a new model with the specified attributes. A client id (`cid`) + // is automatically generated and assigned for you. + var Model = Backbone.Model = function(attributes, options) { + var attrs = attributes || {}; + options || (options = {}); + this.preinitialize.apply(this, arguments); + this.cid = _.uniqueId(this.cidPrefix); + this.attributes = {}; + if (options.collection) this.collection = options.collection; + if (options.parse) attrs = this.parse(attrs, options) || {}; + var defaults = _.result(this, 'defaults'); + attrs = _.defaults(_.extend({}, defaults, attrs), defaults); + this.set(attrs, options); + this.changed = {}; + this.initialize.apply(this, arguments); + }; + + // Attach all inheritable methods to the Model prototype. + _.extend(Model.prototype, Events, { + + // A hash of attributes whose current and previous value differ. + changed: null, + + // The value returned during the last failed validation. + validationError: null, + + // The default name for the JSON `id` attribute is `"id"`. MongoDB and + // CouchDB users may want to set this to `"_id"`. + idAttribute: 'id', + + // The prefix is used to create the client id which is used to identify models locally. + // You may want to override this if you're experiencing name clashes with model ids. + cidPrefix: 'c', + + // preinitialize is an empty function by default. You can override it with a function + // or object. preinitialize will run before any instantiation logic is run in the Model. + preinitialize: function(){}, + + // Initialize is an empty function by default. Override it with your own + // initialization logic. + initialize: function(){}, + + // Return a copy of the model's `attributes` object. + toJSON: function(options) { + return _.clone(this.attributes); + }, + + // Proxy `Backbone.sync` by default -- but override this if you need + // custom syncing semantics for *this* particular model. + sync: function() { + return Backbone.sync.apply(this, arguments); + }, + + // Get the value of an attribute. + get: function(attr) { + return this.attributes[attr]; + }, + + // Get the HTML-escaped value of an attribute. + escape: function(attr) { + return _.escape(this.get(attr)); + }, + + // Returns `true` if the attribute contains a value that is not null + // or undefined. + has: function(attr) { + return this.get(attr) != null; + }, + + // Special-cased proxy to underscore's `_.matches` method. + matches: function(attrs) { + return !!_.iteratee(attrs, this)(this.attributes); + }, + + // Set a hash of model attributes on the object, firing `"change"`. This is + // the core primitive operation of a model, updating the data and notifying + // anyone who needs to know about the change in state. The heart of the beast. + set: function(key, val, options) { + if (key == null) return this; + + // Handle both `"key", value` and `{key: value}` -style arguments. + var attrs; + if (typeof key === 'object') { + attrs = key; + options = val; + } else { + (attrs = {})[key] = val; + } + + options || (options = {}); + + // Run validation. + if (!this._validate(attrs, options)) return false; + + // Extract attributes and options. + var unset = options.unset; + var silent = options.silent; + var changes = []; + var changing = this._changing; + this._changing = true; + + if (!changing) { + this._previousAttributes = _.clone(this.attributes); + this.changed = {}; + } + + var current = this.attributes; + var changed = this.changed; + var prev = this._previousAttributes; + + // For each `set` attribute, update or delete the current value. + for (var attr in attrs) { + val = attrs[attr]; + if (!_.isEqual(current[attr], val)) changes.push(attr); + if (!_.isEqual(prev[attr], val)) { + changed[attr] = val; + } else { + delete changed[attr]; + } + unset ? delete current[attr] : current[attr] = val; + } + + // Update the `id`. + if (this.idAttribute in attrs) this.id = this.get(this.idAttribute); + + // Trigger all relevant attribute changes. + if (!silent) { + if (changes.length) this._pending = options; + for (var i = 0; i < changes.length; i++) { + this.trigger('change:' + changes[i], this, current[changes[i]], options); + } + } + + // You might be wondering why there's a `while` loop here. Changes can + // be recursively nested within `"change"` events. + if (changing) return this; + if (!silent) { + while (this._pending) { + options = this._pending; + this._pending = false; + this.trigger('change', this, options); + } + } + this._pending = false; + this._changing = false; + return this; + }, + + // Remove an attribute from the model, firing `"change"`. `unset` is a noop + // if the attribute doesn't exist. + unset: function(attr, options) { + return this.set(attr, void 0, _.extend({}, options, {unset: true})); + }, + + // Clear all attributes on the model, firing `"change"`. + clear: function(options) { + var attrs = {}; + for (var key in this.attributes) attrs[key] = void 0; + return this.set(attrs, _.extend({}, options, {unset: true})); + }, + + // Determine if the model has changed since the last `"change"` event. + // If you specify an attribute name, determine if that attribute has changed. + hasChanged: function(attr) { + if (attr == null) return !_.isEmpty(this.changed); + return _.has(this.changed, attr); + }, + + // Return an object containing all the attributes that have changed, or + // false if there are no changed attributes. Useful for determining what + // parts of a view need to be updated and/or what attributes need to be + // persisted to the server. Unset attributes will be set to undefined. + // You can also pass an attributes object to diff against the model, + // determining if there *would be* a change. + changedAttributes: function(diff) { + if (!diff) return this.hasChanged() ? _.clone(this.changed) : false; + var old = this._changing ? this._previousAttributes : this.attributes; + var changed = {}; + var hasChanged; + for (var attr in diff) { + var val = diff[attr]; + if (_.isEqual(old[attr], val)) continue; + changed[attr] = val; + hasChanged = true; + } + return hasChanged ? changed : false; + }, + + // Get the previous value of an attribute, recorded at the time the last + // `"change"` event was fired. + previous: function(attr) { + if (attr == null || !this._previousAttributes) return null; + return this._previousAttributes[attr]; + }, + + // Get all of the attributes of the model at the time of the previous + // `"change"` event. + previousAttributes: function() { + return _.clone(this._previousAttributes); + }, + + // Fetch the model from the server, merging the response with the model's + // local attributes. Any changed attributes will trigger a "change" event. + fetch: function(options) { + options = _.extend({parse: true}, options); + var model = this; + var success = options.success; + options.success = function(resp) { + var serverAttrs = options.parse ? model.parse(resp, options) : resp; + if (!model.set(serverAttrs, options)) return false; + if (success) success.call(options.context, model, resp, options); + model.trigger('sync', model, resp, options); + }; + wrapError(this, options); + return this.sync('read', this, options); + }, + + // Set a hash of model attributes, and sync the model to the server. + // If the server returns an attributes hash that differs, the model's + // state will be `set` again. + save: function(key, val, options) { + // Handle both `"key", value` and `{key: value}` -style arguments. + var attrs; + if (key == null || typeof key === 'object') { + attrs = key; + options = val; + } else { + (attrs = {})[key] = val; + } + + options = _.extend({validate: true, parse: true}, options); + var wait = options.wait; + + // If we're not waiting and attributes exist, save acts as + // `set(attr).save(null, opts)` with validation. Otherwise, check if + // the model will be valid when the attributes, if any, are set. + if (attrs && !wait) { + if (!this.set(attrs, options)) return false; + } else if (!this._validate(attrs, options)) { + return false; + } + + // After a successful server-side save, the client is (optionally) + // updated with the server-side state. + var model = this; + var success = options.success; + var attributes = this.attributes; + options.success = function(resp) { + // Ensure attributes are restored during synchronous saves. + model.attributes = attributes; + var serverAttrs = options.parse ? model.parse(resp, options) : resp; + if (wait) serverAttrs = _.extend({}, attrs, serverAttrs); + if (serverAttrs && !model.set(serverAttrs, options)) return false; + if (success) success.call(options.context, model, resp, options); + model.trigger('sync', model, resp, options); + }; + wrapError(this, options); + + // Set temporary attributes if `{wait: true}` to properly find new ids. + if (attrs && wait) this.attributes = _.extend({}, attributes, attrs); + + var method = this.isNew() ? 'create' : options.patch ? 'patch' : 'update'; + if (method === 'patch' && !options.attrs) options.attrs = attrs; + var xhr = this.sync(method, this, options); + + // Restore attributes. + this.attributes = attributes; + + return xhr; + }, + + // Destroy this model on the server if it was already persisted. + // Optimistically removes the model from its collection, if it has one. + // If `wait: true` is passed, waits for the server to respond before removal. + destroy: function(options) { + options = options ? _.clone(options) : {}; + var model = this; + var success = options.success; + var wait = options.wait; + + var destroy = function() { + model.stopListening(); + model.trigger('destroy', model, model.collection, options); + }; + + options.success = function(resp) { + if (wait) destroy(); + if (success) success.call(options.context, model, resp, options); + if (!model.isNew()) model.trigger('sync', model, resp, options); + }; + + var xhr = false; + if (this.isNew()) { + _.defer(options.success); + } else { + wrapError(this, options); + xhr = this.sync('delete', this, options); + } + if (!wait) destroy(); + return xhr; + }, + + // Default URL for the model's representation on the server -- if you're + // using Backbone's restful methods, override this to change the endpoint + // that will be called. + url: function() { + var base = + _.result(this, 'urlRoot') || + _.result(this.collection, 'url') || + urlError(); + if (this.isNew()) return base; + var id = this.get(this.idAttribute); + return base.replace(/[^\/]$/, '$&/') + encodeURIComponent(id); + }, + + // **parse** converts a response into the hash of attributes to be `set` on + // the model. The default implementation is just to pass the response along. + parse: function(resp, options) { + return resp; + }, + + // Create a new model with identical attributes to this one. + clone: function() { + return new this.constructor(this.attributes); + }, + + // A model is new if it has never been saved to the server, and lacks an id. + isNew: function() { + return !this.has(this.idAttribute); + }, + + // Check if the model is currently in a valid state. + isValid: function(options) { + return this._validate({}, _.extend({}, options, {validate: true})); + }, + + // Run validation against the next complete set of model attributes, + // returning `true` if all is well. Otherwise, fire an `"invalid"` event. + _validate: function(attrs, options) { + if (!options.validate || !this.validate) return true; + attrs = _.extend({}, this.attributes, attrs); + var error = this.validationError = this.validate(attrs, options) || null; + if (!error) return true; + this.trigger('invalid', this, error, _.extend(options, {validationError: error})); + return false; + } + + }); + + // Backbone.Collection + // ------------------- + + // If models tend to represent a single row of data, a Backbone Collection is + // more analogous to a table full of data ... or a small slice or page of that + // table, or a collection of rows that belong together for a particular reason + // -- all of the messages in this particular folder, all of the documents + // belonging to this particular author, and so on. Collections maintain + // indexes of their models, both in order, and for lookup by `id`. + + // Create a new **Collection**, perhaps to contain a specific type of `model`. + // If a `comparator` is specified, the Collection will maintain + // its models in sort order, as they're added and removed. + var Collection = Backbone.Collection = function(models, options) { + options || (options = {}); + this.preinitialize.apply(this, arguments); + if (options.model) this.model = options.model; + if (options.comparator !== void 0) this.comparator = options.comparator; + this._reset(); + this.initialize.apply(this, arguments); + if (models) this.reset(models, _.extend({silent: true}, options)); + }; + + // Default options for `Collection#set`. + var setOptions = {add: true, remove: true, merge: true}; + var addOptions = {add: true, remove: false}; + + // Splices `insert` into `array` at index `at`. + var splice = function(array, insert, at) { + at = Math.min(Math.max(at, 0), array.length); + var tail = Array(array.length - at); + var length = insert.length; + var i; + for (i = 0; i < tail.length; i++) tail[i] = array[i + at]; + for (i = 0; i < length; i++) array[i + at] = insert[i]; + for (i = 0; i < tail.length; i++) array[i + length + at] = tail[i]; + }; + + // Define the Collection's inheritable methods. + _.extend(Collection.prototype, Events, { + + // The default model for a collection is just a **Backbone.Model**. + // This should be overridden in most cases. + model: Model, + + + // preinitialize is an empty function by default. You can override it with a function + // or object. preinitialize will run before any instantiation logic is run in the Collection. + preinitialize: function(){}, + + // Initialize is an empty function by default. Override it with your own + // initialization logic. + initialize: function(){}, + + // The JSON representation of a Collection is an array of the + // models' attributes. + toJSON: function(options) { + return this.map(function(model) { return model.toJSON(options); }); + }, + + // Proxy `Backbone.sync` by default. + sync: function() { + return Backbone.sync.apply(this, arguments); + }, + + // Add a model, or list of models to the set. `models` may be Backbone + // Models or raw JavaScript objects to be converted to Models, or any + // combination of the two. + add: function(models, options) { + return this.set(models, _.extend({merge: false}, options, addOptions)); + }, + + // Remove a model, or a list of models from the set. + remove: function(models, options) { + options = _.extend({}, options); + var singular = !_.isArray(models); + models = singular ? [models] : models.slice(); + var removed = this._removeModels(models, options); + if (!options.silent && removed.length) { + options.changes = {added: [], merged: [], removed: removed}; + this.trigger('update', this, options); + } + return singular ? removed[0] : removed; + }, + + // Update a collection by `set`-ing a new list of models, adding new ones, + // removing models that are no longer present, and merging models that + // already exist in the collection, as necessary. Similar to **Model#set**, + // the core operation for updating the data contained by the collection. + set: function(models, options) { + if (models == null) return; + + options = _.extend({}, setOptions, options); + if (options.parse && !this._isModel(models)) { + models = this.parse(models, options) || []; + } + + var singular = !_.isArray(models); + models = singular ? [models] : models.slice(); + + var at = options.at; + if (at != null) at = +at; + if (at > this.length) at = this.length; + if (at < 0) at += this.length + 1; + + var set = []; + var toAdd = []; + var toMerge = []; + var toRemove = []; + var modelMap = {}; + + var add = options.add; + var merge = options.merge; + var remove = options.remove; + + var sort = false; + var sortable = this.comparator && at == null && options.sort !== false; + var sortAttr = _.isString(this.comparator) ? this.comparator : null; + + // Turn bare objects into model references, and prevent invalid models + // from being added. + var model, i; + for (i = 0; i < models.length; i++) { + model = models[i]; + + // If a duplicate is found, prevent it from being added and + // optionally merge it into the existing model. + var existing = this.get(model); + if (existing) { + if (merge && model !== existing) { + var attrs = this._isModel(model) ? model.attributes : model; + if (options.parse) attrs = existing.parse(attrs, options); + existing.set(attrs, options); + toMerge.push(existing); + if (sortable && !sort) sort = existing.hasChanged(sortAttr); + } + if (!modelMap[existing.cid]) { + modelMap[existing.cid] = true; + set.push(existing); + } + models[i] = existing; + + // If this is a new, valid model, push it to the `toAdd` list. + } else if (add) { + model = models[i] = this._prepareModel(model, options); + if (model) { + toAdd.push(model); + this._addReference(model, options); + modelMap[model.cid] = true; + set.push(model); + } + } + } + + // Remove stale models. + if (remove) { + for (i = 0; i < this.length; i++) { + model = this.models[i]; + if (!modelMap[model.cid]) toRemove.push(model); + } + if (toRemove.length) this._removeModels(toRemove, options); + } + + // See if sorting is needed, update `length` and splice in new models. + var orderChanged = false; + var replace = !sortable && add && remove; + if (set.length && replace) { + orderChanged = this.length !== set.length || _.some(this.models, function(m, index) { + return m !== set[index]; + }); + this.models.length = 0; + splice(this.models, set, 0); + this.length = this.models.length; + } else if (toAdd.length) { + if (sortable) sort = true; + splice(this.models, toAdd, at == null ? this.length : at); + this.length = this.models.length; + } + + // Silently sort the collection if appropriate. + if (sort) this.sort({silent: true}); + + // Unless silenced, it's time to fire all appropriate add/sort/update events. + if (!options.silent) { + for (i = 0; i < toAdd.length; i++) { + if (at != null) options.index = at + i; + model = toAdd[i]; + model.trigger('add', model, this, options); + } + if (sort || orderChanged) this.trigger('sort', this, options); + if (toAdd.length || toRemove.length || toMerge.length) { + options.changes = { + added: toAdd, + removed: toRemove, + merged: toMerge + }; + this.trigger('update', this, options); + } + } + + // Return the added (or merged) model (or models). + return singular ? models[0] : models; + }, + + // When you have more items than you want to add or remove individually, + // you can reset the entire set with a new list of models, without firing + // any granular `add` or `remove` events. Fires `reset` when finished. + // Useful for bulk operations and optimizations. + reset: function(models, options) { + options = options ? _.clone(options) : {}; + for (var i = 0; i < this.models.length; i++) { + this._removeReference(this.models[i], options); + } + options.previousModels = this.models; + this._reset(); + models = this.add(models, _.extend({silent: true}, options)); + if (!options.silent) this.trigger('reset', this, options); + return models; + }, + + // Add a model to the end of the collection. + push: function(model, options) { + return this.add(model, _.extend({at: this.length}, options)); + }, + + // Remove a model from the end of the collection. + pop: function(options) { + var model = this.at(this.length - 1); + return this.remove(model, options); + }, + + // Add a model to the beginning of the collection. + unshift: function(model, options) { + return this.add(model, _.extend({at: 0}, options)); + }, + + // Remove a model from the beginning of the collection. + shift: function(options) { + var model = this.at(0); + return this.remove(model, options); + }, + + // Slice out a sub-array of models from the collection. + slice: function() { + return slice.apply(this.models, arguments); + }, + + // Get a model from the set by id, cid, model object with id or cid + // properties, or an attributes object that is transformed through modelId. + get: function(obj) { + if (obj == null) return void 0; + return this._byId[obj] || + this._byId[this.modelId(this._isModel(obj) ? obj.attributes : obj)] || + obj.cid && this._byId[obj.cid]; + }, + + // Returns `true` if the model is in the collection. + has: function(obj) { + return this.get(obj) != null; + }, + + // Get the model at the given index. + at: function(index) { + if (index < 0) index += this.length; + return this.models[index]; + }, + + // Return models with matching attributes. Useful for simple cases of + // `filter`. + where: function(attrs, first) { + return this[first ? 'find' : 'filter'](attrs); + }, + + // Return the first model with matching attributes. Useful for simple cases + // of `find`. + findWhere: function(attrs) { + return this.where(attrs, true); + }, + + // Force the collection to re-sort itself. You don't need to call this under + // normal circumstances, as the set will maintain sort order as each item + // is added. + sort: function(options) { + var comparator = this.comparator; + if (!comparator) throw new Error('Cannot sort a set without a comparator'); + options || (options = {}); + + var length = comparator.length; + if (_.isFunction(comparator)) comparator = comparator.bind(this); + + // Run sort based on type of `comparator`. + if (length === 1 || _.isString(comparator)) { + this.models = this.sortBy(comparator); + } else { + this.models.sort(comparator); + } + if (!options.silent) this.trigger('sort', this, options); + return this; + }, + + // Pluck an attribute from each model in the collection. + pluck: function(attr) { + return this.map(attr + ''); + }, + + // Fetch the default set of models for this collection, resetting the + // collection when they arrive. If `reset: true` is passed, the response + // data will be passed through the `reset` method instead of `set`. + fetch: function(options) { + options = _.extend({parse: true}, options); + var success = options.success; + var collection = this; + options.success = function(resp) { + var method = options.reset ? 'reset' : 'set'; + collection[method](resp, options); + if (success) success.call(options.context, collection, resp, options); + collection.trigger('sync', collection, resp, options); + }; + wrapError(this, options); + return this.sync('read', this, options); + }, + + // Create a new instance of a model in this collection. Add the model to the + // collection immediately, unless `wait: true` is passed, in which case we + // wait for the server to agree. + create: function(model, options) { + options = options ? _.clone(options) : {}; + var wait = options.wait; + model = this._prepareModel(model, options); + if (!model) return false; + if (!wait) this.add(model, options); + var collection = this; + var success = options.success; + options.success = function(m, resp, callbackOpts) { + if (wait) collection.add(m, callbackOpts); + if (success) success.call(callbackOpts.context, m, resp, callbackOpts); + }; + model.save(null, options); + return model; + }, + + // **parse** converts a response into a list of models to be added to the + // collection. The default implementation is just to pass it through. + parse: function(resp, options) { + return resp; + }, + + // Create a new collection with an identical list of models as this one. + clone: function() { + return new this.constructor(this.models, { + model: this.model, + comparator: this.comparator + }); + }, + + // Define how to uniquely identify models in the collection. + modelId: function(attrs) { + return attrs[this.model.prototype.idAttribute || 'id']; + }, + + // Get an iterator of all models in this collection. + values: function() { + return new CollectionIterator(this, ITERATOR_VALUES); + }, + + // Get an iterator of all model IDs in this collection. + keys: function() { + return new CollectionIterator(this, ITERATOR_KEYS); + }, + + // Get an iterator of all [ID, model] tuples in this collection. + entries: function() { + return new CollectionIterator(this, ITERATOR_KEYSVALUES); + }, + + // Private method to reset all internal state. Called when the collection + // is first initialized or reset. + _reset: function() { + this.length = 0; + this.models = []; + this._byId = {}; + }, + + // Prepare a hash of attributes (or other model) to be added to this + // collection. + _prepareModel: function(attrs, options) { + if (this._isModel(attrs)) { + if (!attrs.collection) attrs.collection = this; + return attrs; + } + options = options ? _.clone(options) : {}; + options.collection = this; + var model = new this.model(attrs, options); + if (!model.validationError) return model; + this.trigger('invalid', this, model.validationError, options); + return false; + }, + + // Internal method called by both remove and set. + _removeModels: function(models, options) { + var removed = []; + for (var i = 0; i < models.length; i++) { + var model = this.get(models[i]); + if (!model) continue; + + var index = this.indexOf(model); + this.models.splice(index, 1); + this.length--; + + // Remove references before triggering 'remove' event to prevent an + // infinite loop. #3693 + delete this._byId[model.cid]; + var id = this.modelId(model.attributes); + if (id != null) delete this._byId[id]; + + if (!options.silent) { + options.index = index; + model.trigger('remove', model, this, options); + } + + removed.push(model); + this._removeReference(model, options); + } + return removed; + }, + + // Method for checking whether an object should be considered a model for + // the purposes of adding to the collection. + _isModel: function(model) { + return model instanceof Model; + }, + + // Internal method to create a model's ties to a collection. + _addReference: function(model, options) { + this._byId[model.cid] = model; + var id = this.modelId(model.attributes); + if (id != null) this._byId[id] = model; + model.on('all', this._onModelEvent, this); + }, + + // Internal method to sever a model's ties to a collection. + _removeReference: function(model, options) { + delete this._byId[model.cid]; + var id = this.modelId(model.attributes); + if (id != null) delete this._byId[id]; + if (this === model.collection) delete model.collection; + model.off('all', this._onModelEvent, this); + }, + + // Internal method called every time a model in the set fires an event. + // Sets need to update their indexes when models change ids. All other + // events simply proxy through. "add" and "remove" events that originate + // in other collections are ignored. + _onModelEvent: function(event, model, collection, options) { + if (model) { + if ((event === 'add' || event === 'remove') && collection !== this) return; + if (event === 'destroy') this.remove(model, options); + if (event === 'change') { + var prevId = this.modelId(model.previousAttributes()); + var id = this.modelId(model.attributes); + if (prevId !== id) { + if (prevId != null) delete this._byId[prevId]; + if (id != null) this._byId[id] = model; + } + } + } + this.trigger.apply(this, arguments); + } + + }); + + // Defining an @@iterator method implements JavaScript's Iterable protocol. + // In modern ES2015 browsers, this value is found at Symbol.iterator. + /* global Symbol */ + var $$iterator = typeof Symbol === 'function' && Symbol.iterator; + if ($$iterator) { + Collection.prototype[$$iterator] = Collection.prototype.values; + } + + // CollectionIterator + // ------------------ + + // A CollectionIterator implements JavaScript's Iterator protocol, allowing the + // use of `for of` loops in modern browsers and interoperation between + // Backbone.Collection and other JavaScript functions and third-party libraries + // which can operate on Iterables. + var CollectionIterator = function(collection, kind) { + this._collection = collection; + this._kind = kind; + this._index = 0; + }; + + // This "enum" defines the three possible kinds of values which can be emitted + // by a CollectionIterator that correspond to the values(), keys() and entries() + // methods on Collection, respectively. + var ITERATOR_VALUES = 1; + var ITERATOR_KEYS = 2; + var ITERATOR_KEYSVALUES = 3; + + // All Iterators should themselves be Iterable. + if ($$iterator) { + CollectionIterator.prototype[$$iterator] = function() { + return this; + }; + } + + CollectionIterator.prototype.next = function() { + if (this._collection) { + + // Only continue iterating if the iterated collection is long enough. + if (this._index < this._collection.length) { + var model = this._collection.at(this._index); + this._index++; + + // Construct a value depending on what kind of values should be iterated. + var value; + if (this._kind === ITERATOR_VALUES) { + value = model; + } else { + var id = this._collection.modelId(model.attributes); + if (this._kind === ITERATOR_KEYS) { + value = id; + } else { // ITERATOR_KEYSVALUES + value = [id, model]; + } + } + return {value: value, done: false}; + } + + // Once exhausted, remove the reference to the collection so future + // calls to the next method always return done. + this._collection = void 0; + } + + return {value: void 0, done: true}; + }; + + // Backbone.View + // ------------- + + // Backbone Views are almost more convention than they are actual code. A View + // is simply a JavaScript object that represents a logical chunk of UI in the + // DOM. This might be a single item, an entire list, a sidebar or panel, or + // even the surrounding frame which wraps your whole app. Defining a chunk of + // UI as a **View** allows you to define your DOM events declaratively, without + // having to worry about render order ... and makes it easy for the view to + // react to specific changes in the state of your models. + + // Creating a Backbone.View creates its initial element outside of the DOM, + // if an existing element is not provided... + var View = Backbone.View = function(options) { + this.cid = _.uniqueId('view'); + this.preinitialize.apply(this, arguments); + _.extend(this, _.pick(options, viewOptions)); + this._ensureElement(); + this.initialize.apply(this, arguments); + }; + + // Cached regex to split keys for `delegate`. + var delegateEventSplitter = /^(\S+)\s*(.*)$/; + + // List of view options to be set as properties. + var viewOptions = ['model', 'collection', 'el', 'id', 'attributes', 'className', 'tagName', 'events']; + + // Set up all inheritable **Backbone.View** properties and methods. + _.extend(View.prototype, Events, { + + // The default `tagName` of a View's element is `"div"`. + tagName: 'div', + + // jQuery delegate for element lookup, scoped to DOM elements within the + // current view. This should be preferred to global lookups where possible. + $: function(selector) { + return this.$el.find(selector); + }, + + // preinitialize is an empty function by default. You can override it with a function + // or object. preinitialize will run before any instantiation logic is run in the View + preinitialize: function(){}, + + // Initialize is an empty function by default. Override it with your own + // initialization logic. + initialize: function(){}, + + // **render** is the core function that your view should override, in order + // to populate its element (`this.el`), with the appropriate HTML. The + // convention is for **render** to always return `this`. + render: function() { + return this; + }, + + // Remove this view by taking the element out of the DOM, and removing any + // applicable Backbone.Events listeners. + remove: function() { + this._removeElement(); + this.stopListening(); + return this; + }, + + // Remove this view's element from the document and all event listeners + // attached to it. Exposed for subclasses using an alternative DOM + // manipulation API. + _removeElement: function() { + this.$el.remove(); + }, + + // Change the view's element (`this.el` property) and re-delegate the + // view's events on the new element. + setElement: function(element) { + this.undelegateEvents(); + this._setElement(element); + this.delegateEvents(); + return this; + }, + + // Creates the `this.el` and `this.$el` references for this view using the + // given `el`. `el` can be a CSS selector or an HTML string, a jQuery + // context or an element. Subclasses can override this to utilize an + // alternative DOM manipulation API and are only required to set the + // `this.el` property. + _setElement: function(el) { + this.$el = el instanceof Backbone.$ ? el : Backbone.$(el); + this.el = this.$el[0]; + }, + + // Set callbacks, where `this.events` is a hash of + // + // *{"event selector": "callback"}* + // + // { + // 'mousedown .title': 'edit', + // 'click .button': 'save', + // 'click .open': function(e) { ... } + // } + // + // pairs. Callbacks will be bound to the view, with `this` set properly. + // Uses event delegation for efficiency. + // Omitting the selector binds the event to `this.el`. + delegateEvents: function(events) { + events || (events = _.result(this, 'events')); + if (!events) return this; + this.undelegateEvents(); + for (var key in events) { + var method = events[key]; + if (!_.isFunction(method)) method = this[method]; + if (!method) continue; + var match = key.match(delegateEventSplitter); + this.delegate(match[1], match[2], method.bind(this)); + } + return this; + }, + + // Add a single event listener to the view's element (or a child element + // using `selector`). This only works for delegate-able events: not `focus`, + // `blur`, and not `change`, `submit`, and `reset` in Internet Explorer. + delegate: function(eventName, selector, listener) { + this.$el.on(eventName + '.delegateEvents' + this.cid, selector, listener); + return this; + }, + + // Clears all callbacks previously bound to the view by `delegateEvents`. + // You usually don't need to use this, but may wish to if you have multiple + // Backbone views attached to the same DOM element. + undelegateEvents: function() { + if (this.$el) this.$el.off('.delegateEvents' + this.cid); + return this; + }, + + // A finer-grained `undelegateEvents` for removing a single delegated event. + // `selector` and `listener` are both optional. + undelegate: function(eventName, selector, listener) { + this.$el.off(eventName + '.delegateEvents' + this.cid, selector, listener); + return this; + }, + + // Produces a DOM element to be assigned to your view. Exposed for + // subclasses using an alternative DOM manipulation API. + _createElement: function(tagName) { + return document.createElement(tagName); + }, + + // Ensure that the View has a DOM element to render into. + // If `this.el` is a string, pass it through `$()`, take the first + // matching element, and re-assign it to `el`. Otherwise, create + // an element from the `id`, `className` and `tagName` properties. + _ensureElement: function() { + if (!this.el) { + var attrs = _.extend({}, _.result(this, 'attributes')); + if (this.id) attrs.id = _.result(this, 'id'); + if (this.className) attrs['class'] = _.result(this, 'className'); + this.setElement(this._createElement(_.result(this, 'tagName'))); + this._setAttributes(attrs); + } else { + this.setElement(_.result(this, 'el')); + } + }, + + // Set attributes from a hash on this view's element. Exposed for + // subclasses using an alternative DOM manipulation API. + _setAttributes: function(attributes) { + this.$el.attr(attributes); + } + + }); + + // Proxy Backbone class methods to Underscore functions, wrapping the model's + // `attributes` object or collection's `models` array behind the scenes. + // + // collection.filter(function(model) { return model.get('age') > 10 }); + // collection.each(this.addView); + // + // `Function#apply` can be slow so we use the method's arg count, if we know it. + var addMethod = function(base, length, method, attribute) { + switch (length) { + case 1: return function() { + return base[method](this[attribute]); + }; + case 2: return function(value) { + return base[method](this[attribute], value); + }; + case 3: return function(iteratee, context) { + return base[method](this[attribute], cb(iteratee, this), context); + }; + case 4: return function(iteratee, defaultVal, context) { + return base[method](this[attribute], cb(iteratee, this), defaultVal, context); + }; + default: return function() { + var args = slice.call(arguments); + args.unshift(this[attribute]); + return base[method].apply(base, args); + }; + } + }; + + var addUnderscoreMethods = function(Class, base, methods, attribute) { + _.each(methods, function(length, method) { + if (base[method]) Class.prototype[method] = addMethod(base, length, method, attribute); + }); + }; + + // Support `collection.sortBy('attr')` and `collection.findWhere({id: 1})`. + var cb = function(iteratee, instance) { + if (_.isFunction(iteratee)) return iteratee; + if (_.isObject(iteratee) && !instance._isModel(iteratee)) return modelMatcher(iteratee); + if (_.isString(iteratee)) return function(model) { return model.get(iteratee); }; + return iteratee; + }; + var modelMatcher = function(attrs) { + var matcher = _.matches(attrs); + return function(model) { + return matcher(model.attributes); + }; + }; + + // Underscore methods that we want to implement on the Collection. + // 90% of the core usefulness of Backbone Collections is actually implemented + // right here: + var collectionMethods = {forEach: 3, each: 3, map: 3, collect: 3, reduce: 0, + foldl: 0, inject: 0, reduceRight: 0, foldr: 0, find: 3, detect: 3, filter: 3, + select: 3, reject: 3, every: 3, all: 3, some: 3, any: 3, include: 3, includes: 3, + contains: 3, invoke: 0, max: 3, min: 3, toArray: 1, size: 1, first: 3, + head: 3, take: 3, initial: 3, rest: 3, tail: 3, drop: 3, last: 3, + without: 0, difference: 0, indexOf: 3, shuffle: 1, lastIndexOf: 3, + isEmpty: 1, chain: 1, sample: 3, partition: 3, groupBy: 3, countBy: 3, + sortBy: 3, indexBy: 3, findIndex: 3, findLastIndex: 3}; + + + // Underscore methods that we want to implement on the Model, mapped to the + // number of arguments they take. + var modelMethods = {keys: 1, values: 1, pairs: 1, invert: 1, pick: 0, + omit: 0, chain: 1, isEmpty: 1}; + + // Mix in each Underscore method as a proxy to `Collection#models`. + + _.each([ + [Collection, collectionMethods, 'models'], + [Model, modelMethods, 'attributes'] + ], function(config) { + var Base = config[0], + methods = config[1], + attribute = config[2]; + + Base.mixin = function(obj) { + var mappings = _.reduce(_.functions(obj), function(memo, name) { + memo[name] = 0; + return memo; + }, {}); + addUnderscoreMethods(Base, obj, mappings, attribute); + }; + + addUnderscoreMethods(Base, _, methods, attribute); + }); + + // Backbone.sync + // ------------- + + // Override this function to change the manner in which Backbone persists + // models to the server. You will be passed the type of request, and the + // model in question. By default, makes a RESTful Ajax request + // to the model's `url()`. Some possible customizations could be: + // + // * Use `setTimeout` to batch rapid-fire updates into a single request. + // * Send up the models as XML instead of JSON. + // * Persist models via WebSockets instead of Ajax. + // + // Turn on `Backbone.emulateHTTP` in order to send `PUT` and `DELETE` requests + // as `POST`, with a `_method` parameter containing the true HTTP method, + // as well as all requests with the body as `application/x-www-form-urlencoded` + // instead of `application/json` with the model in a param named `model`. + // Useful when interfacing with server-side languages like **PHP** that make + // it difficult to read the body of `PUT` requests. + Backbone.sync = function(method, model, options) { + var type = methodMap[method]; + + // Default options, unless specified. + _.defaults(options || (options = {}), { + emulateHTTP: Backbone.emulateHTTP, + emulateJSON: Backbone.emulateJSON + }); + + // Default JSON-request options. + var params = {type: type, dataType: 'json'}; + + // Ensure that we have a URL. + if (!options.url) { + params.url = _.result(model, 'url') || urlError(); + } + + // Ensure that we have the appropriate request data. + if (options.data == null && model && (method === 'create' || method === 'update' || method === 'patch')) { + params.contentType = 'application/json'; + params.data = JSON.stringify(options.attrs || model.toJSON(options)); + } + + // For older servers, emulate JSON by encoding the request into an HTML-form. + if (options.emulateJSON) { + params.contentType = 'application/x-www-form-urlencoded'; + params.data = params.data ? {model: params.data} : {}; + } + + // For older servers, emulate HTTP by mimicking the HTTP method with `_method` + // And an `X-HTTP-Method-Override` header. + if (options.emulateHTTP && (type === 'PUT' || type === 'DELETE' || type === 'PATCH')) { + params.type = 'POST'; + if (options.emulateJSON) params.data._method = type; + var beforeSend = options.beforeSend; + options.beforeSend = function(xhr) { + xhr.setRequestHeader('X-HTTP-Method-Override', type); + if (beforeSend) return beforeSend.apply(this, arguments); + }; + } + + // Don't process data on a non-GET request. + if (params.type !== 'GET' && !options.emulateJSON) { + params.processData = false; + } + + // Pass along `textStatus` and `errorThrown` from jQuery. + var error = options.error; + options.error = function(xhr, textStatus, errorThrown) { + options.textStatus = textStatus; + options.errorThrown = errorThrown; + if (error) error.call(options.context, xhr, textStatus, errorThrown); + }; + + // Make the request, allowing the user to override any Ajax options. + var xhr = options.xhr = Backbone.ajax(_.extend(params, options)); + model.trigger('request', model, xhr, options); + return xhr; + }; + + // Map from CRUD to HTTP for our default `Backbone.sync` implementation. + var methodMap = { + create: 'POST', + update: 'PUT', + patch: 'PATCH', + delete: 'DELETE', + read: 'GET' + }; + + // Set the default implementation of `Backbone.ajax` to proxy through to `$`. + // Override this if you'd like to use a different library. + Backbone.ajax = function() { + return Backbone.$.ajax.apply(Backbone.$, arguments); + }; + + // Backbone.Router + // --------------- + + // Routers map faux-URLs to actions, and fire events when routes are + // matched. Creating a new one sets its `routes` hash, if not set statically. + var Router = Backbone.Router = function(options) { + options || (options = {}); + this.preinitialize.apply(this, arguments); + if (options.routes) this.routes = options.routes; + this._bindRoutes(); + this.initialize.apply(this, arguments); + }; + + // Cached regular expressions for matching named param parts and splatted + // parts of route strings. + var optionalParam = /\((.*?)\)/g; + var namedParam = /(\(\?)?:\w+/g; + var splatParam = /\*\w+/g; + var escapeRegExp = /[\-{}\[\]+?.,\\\^$|#\s]/g; + + // Set up all inheritable **Backbone.Router** properties and methods. + _.extend(Router.prototype, Events, { + + // preinitialize is an empty function by default. You can override it with a function + // or object. preinitialize will run before any instantiation logic is run in the Router. + preinitialize: function(){}, + + // Initialize is an empty function by default. Override it with your own + // initialization logic. + initialize: function(){}, + + // Manually bind a single named route to a callback. For example: + // + // this.route('search/:query/p:num', 'search', function(query, num) { + // ... + // }); + // + route: function(route, name, callback) { + if (!_.isRegExp(route)) route = this._routeToRegExp(route); + if (_.isFunction(name)) { + callback = name; + name = ''; + } + if (!callback) callback = this[name]; + var router = this; + Backbone.history.route(route, function(fragment) { + var args = router._extractParameters(route, fragment); + if (router.execute(callback, args, name) !== false) { + router.trigger.apply(router, ['route:' + name].concat(args)); + router.trigger('route', name, args); + Backbone.history.trigger('route', router, name, args); + } + }); + return this; + }, + + // Execute a route handler with the provided parameters. This is an + // excellent place to do pre-route setup or post-route cleanup. + execute: function(callback, args, name) { + if (callback) callback.apply(this, args); + }, + + // Simple proxy to `Backbone.history` to save a fragment into the history. + navigate: function(fragment, options) { + Backbone.history.navigate(fragment, options); + return this; + }, + + // Bind all defined routes to `Backbone.history`. We have to reverse the + // order of the routes here to support behavior where the most general + // routes can be defined at the bottom of the route map. + _bindRoutes: function() { + if (!this.routes) return; + this.routes = _.result(this, 'routes'); + var route, routes = _.keys(this.routes); + while ((route = routes.pop()) != null) { + this.route(route, this.routes[route]); + } + }, + + // Convert a route string into a regular expression, suitable for matching + // against the current location hash. + _routeToRegExp: function(route) { + route = route.replace(escapeRegExp, '\\$&') + .replace(optionalParam, '(?:$1)?') + .replace(namedParam, function(match, optional) { + return optional ? match : '([^/?]+)'; + }) + .replace(splatParam, '([^?]*?)'); + return new RegExp('^' + route + '(?:\\?([\\s\\S]*))?$'); + }, + + // Given a route, and a URL fragment that it matches, return the array of + // extracted decoded parameters. Empty or unmatched parameters will be + // treated as `null` to normalize cross-browser behavior. + _extractParameters: function(route, fragment) { + var params = route.exec(fragment).slice(1); + return _.map(params, function(param, i) { + // Don't decode the search params. + if (i === params.length - 1) return param || null; + return param ? decodeURIComponent(param) : null; + }); + } + + }); + + // Backbone.History + // ---------------- + + // Handles cross-browser history management, based on either + // [pushState](http://diveintohtml5.info/history.html) and real URLs, or + // [onhashchange](https://developer.mozilla.org/en-US/docs/DOM/window.onhashchange) + // and URL fragments. If the browser supports neither (old IE, natch), + // falls back to polling. + var History = Backbone.History = function() { + this.handlers = []; + this.checkUrl = this.checkUrl.bind(this); + + // Ensure that `History` can be used outside of the browser. + if (typeof window !== 'undefined') { + this.location = window.location; + this.history = window.history; + } + }; + + // Cached regex for stripping a leading hash/slash and trailing space. + var routeStripper = /^[#\/]|\s+$/g; + + // Cached regex for stripping leading and trailing slashes. + var rootStripper = /^\/+|\/+$/g; + + // Cached regex for stripping urls of hash. + var pathStripper = /#.*$/; + + // Has the history handling already been started? + History.started = false; + + // Set up all inheritable **Backbone.History** properties and methods. + _.extend(History.prototype, Events, { + + // The default interval to poll for hash changes, if necessary, is + // twenty times a second. + interval: 50, + + // Are we at the app root? + atRoot: function() { + var path = this.location.pathname.replace(/[^\/]$/, '$&/'); + return path === this.root && !this.getSearch(); + }, + + // Does the pathname match the root? + matchRoot: function() { + var path = this.decodeFragment(this.location.pathname); + var rootPath = path.slice(0, this.root.length - 1) + '/'; + return rootPath === this.root; + }, + + // Unicode characters in `location.pathname` are percent encoded so they're + // decoded for comparison. `%25` should not be decoded since it may be part + // of an encoded parameter. + decodeFragment: function(fragment) { + return decodeURI(fragment.replace(/%25/g, '%2525')); + }, + + // In IE6, the hash fragment and search params are incorrect if the + // fragment contains `?`. + getSearch: function() { + var match = this.location.href.replace(/#.*/, '').match(/\?.+/); + return match ? match[0] : ''; + }, + + // Gets the true hash value. Cannot use location.hash directly due to bug + // in Firefox where location.hash will always be decoded. + getHash: function(window) { + var match = (window || this).location.href.match(/#(.*)$/); + return match ? match[1] : ''; + }, + + // Get the pathname and search params, without the root. + getPath: function() { + var path = this.decodeFragment( + this.location.pathname + this.getSearch() + ).slice(this.root.length - 1); + return path.charAt(0) === '/' ? path.slice(1) : path; + }, + + // Get the cross-browser normalized URL fragment from the path or hash. + getFragment: function(fragment) { + if (fragment == null) { + if (this._usePushState || !this._wantsHashChange) { + fragment = this.getPath(); + } else { + fragment = this.getHash(); + } + } + return fragment.replace(routeStripper, ''); + }, + + // Start the hash change handling, returning `true` if the current URL matches + // an existing route, and `false` otherwise. + start: function(options) { + if (History.started) throw new Error('Backbone.history has already been started'); + History.started = true; + + // Figure out the initial configuration. Do we need an iframe? + // Is pushState desired ... is it available? + this.options = _.extend({root: '/'}, this.options, options); + this.root = this.options.root; + this._wantsHashChange = this.options.hashChange !== false; + this._hasHashChange = 'onhashchange' in window && (document.documentMode === void 0 || document.documentMode > 7); + this._useHashChange = this._wantsHashChange && this._hasHashChange; + this._wantsPushState = !!this.options.pushState; + this._hasPushState = !!(this.history && this.history.pushState); + this._usePushState = this._wantsPushState && this._hasPushState; + this.fragment = this.getFragment(); + + // Normalize root to always include a leading and trailing slash. + this.root = ('/' + this.root + '/').replace(rootStripper, '/'); + + // Transition from hashChange to pushState or vice versa if both are + // requested. + if (this._wantsHashChange && this._wantsPushState) { + + // If we've started off with a route from a `pushState`-enabled + // browser, but we're currently in a browser that doesn't support it... + if (!this._hasPushState && !this.atRoot()) { + var rootPath = this.root.slice(0, -1) || '/'; + this.location.replace(rootPath + '#' + this.getPath()); + // Return immediately as browser will do redirect to new url + return true; + + // Or if we've started out with a hash-based route, but we're currently + // in a browser where it could be `pushState`-based instead... + } else if (this._hasPushState && this.atRoot()) { + this.navigate(this.getHash(), {replace: true}); + } + + } + + // Proxy an iframe to handle location events if the browser doesn't + // support the `hashchange` event, HTML5 history, or the user wants + // `hashChange` but not `pushState`. + if (!this._hasHashChange && this._wantsHashChange && !this._usePushState) { + this.iframe = document.createElement('iframe'); + this.iframe.src = 'javascript:0'; + this.iframe.style.display = 'none'; + this.iframe.tabIndex = -1; + var body = document.body; + // Using `appendChild` will throw on IE < 9 if the document is not ready. + var iWindow = body.insertBefore(this.iframe, body.firstChild).contentWindow; + iWindow.document.open(); + iWindow.document.close(); + iWindow.location.hash = '#' + this.fragment; + } + + // Add a cross-platform `addEventListener` shim for older browsers. + var addEventListener = window.addEventListener || function(eventName, listener) { + return attachEvent('on' + eventName, listener); + }; + + // Depending on whether we're using pushState or hashes, and whether + // 'onhashchange' is supported, determine how we check the URL state. + if (this._usePushState) { + addEventListener('popstate', this.checkUrl, false); + } else if (this._useHashChange && !this.iframe) { + addEventListener('hashchange', this.checkUrl, false); + } else if (this._wantsHashChange) { + this._checkUrlInterval = setInterval(this.checkUrl, this.interval); + } + + if (!this.options.silent) return this.loadUrl(); + }, + + // Disable Backbone.history, perhaps temporarily. Not useful in a real app, + // but possibly useful for unit testing Routers. + stop: function() { + // Add a cross-platform `removeEventListener` shim for older browsers. + var removeEventListener = window.removeEventListener || function(eventName, listener) { + return detachEvent('on' + eventName, listener); + }; + + // Remove window listeners. + if (this._usePushState) { + removeEventListener('popstate', this.checkUrl, false); + } else if (this._useHashChange && !this.iframe) { + removeEventListener('hashchange', this.checkUrl, false); + } + + // Clean up the iframe if necessary. + if (this.iframe) { + document.body.removeChild(this.iframe); + this.iframe = null; + } + + // Some environments will throw when clearing an undefined interval. + if (this._checkUrlInterval) clearInterval(this._checkUrlInterval); + History.started = false; + }, + + // Add a route to be tested when the fragment changes. Routes added later + // may override previous routes. + route: function(route, callback) { + this.handlers.unshift({route: route, callback: callback}); + }, + + // Checks the current URL to see if it has changed, and if it has, + // calls `loadUrl`, normalizing across the hidden iframe. + checkUrl: function(e) { + var current = this.getFragment(); + + // If the user pressed the back button, the iframe's hash will have + // changed and we should use that for comparison. + if (current === this.fragment && this.iframe) { + current = this.getHash(this.iframe.contentWindow); + } + + if (current === this.fragment) return false; + if (this.iframe) this.navigate(current); + this.loadUrl(); + }, + + // Attempt to load the current URL fragment. If a route succeeds with a + // match, returns `true`. If no defined routes matches the fragment, + // returns `false`. + loadUrl: function(fragment) { + // If the root doesn't match, no routes can match either. + if (!this.matchRoot()) return false; + fragment = this.fragment = this.getFragment(fragment); + return _.some(this.handlers, function(handler) { + if (handler.route.test(fragment)) { + handler.callback(fragment); + return true; + } + }); + }, + + // Save a fragment into the hash history, or replace the URL state if the + // 'replace' option is passed. You are responsible for properly URL-encoding + // the fragment in advance. + // + // The options object can contain `trigger: true` if you wish to have the + // route callback be fired (not usually desirable), or `replace: true`, if + // you wish to modify the current URL without adding an entry to the history. + navigate: function(fragment, options) { + if (!History.started) return false; + if (!options || options === true) options = {trigger: !!options}; + + // Normalize the fragment. + fragment = this.getFragment(fragment || ''); + + // Don't include a trailing slash on the root. + var rootPath = this.root; + if (fragment === '' || fragment.charAt(0) === '?') { + rootPath = rootPath.slice(0, -1) || '/'; + } + var url = rootPath + fragment; + + // Strip the fragment of the query and hash for matching. + fragment = fragment.replace(pathStripper, ''); + + // Decode for matching. + var decodedFragment = this.decodeFragment(fragment); + + if (this.fragment === decodedFragment) return; + this.fragment = decodedFragment; + + // If pushState is available, we use it to set the fragment as a real URL. + if (this._usePushState) { + this.history[options.replace ? 'replaceState' : 'pushState']({}, document.title, url); + + // If hash changes haven't been explicitly disabled, update the hash + // fragment to store history. + } else if (this._wantsHashChange) { + this._updateHash(this.location, fragment, options.replace); + if (this.iframe && fragment !== this.getHash(this.iframe.contentWindow)) { + var iWindow = this.iframe.contentWindow; + + // Opening and closing the iframe tricks IE7 and earlier to push a + // history entry on hash-tag change. When replace is true, we don't + // want this. + if (!options.replace) { + iWindow.document.open(); + iWindow.document.close(); + } + + this._updateHash(iWindow.location, fragment, options.replace); + } + + // If you've told us that you explicitly don't want fallback hashchange- + // based history, then `navigate` becomes a page refresh. + } else { + return this.location.assign(url); + } + if (options.trigger) return this.loadUrl(fragment); + }, + + // Update the hash location, either replacing the current entry, or adding + // a new one to the browser history. + _updateHash: function(location, fragment, replace) { + if (replace) { + var href = location.href.replace(/(javascript:|#).*$/, ''); + location.replace(href + '#' + fragment); + } else { + // Some browsers require that `hash` contains a leading #. + location.hash = '#' + fragment; + } + } + + }); + + // Create the default Backbone.history. + Backbone.history = new History; + + // Helpers + // ------- + + // Helper function to correctly set up the prototype chain for subclasses. + // Similar to `goog.inherits`, but uses a hash of prototype properties and + // class properties to be extended. + var extend = function(protoProps, staticProps) { + var parent = this; + var child; + + // The constructor function for the new subclass is either defined by you + // (the "constructor" property in your `extend` definition), or defaulted + // by us to simply call the parent constructor. + if (protoProps && _.has(protoProps, 'constructor')) { + child = protoProps.constructor; + } else { + child = function(){ return parent.apply(this, arguments); }; + } + + // Add static properties to the constructor function, if supplied. + _.extend(child, parent, staticProps); + + // Set the prototype chain to inherit from `parent`, without calling + // `parent`'s constructor function and add the prototype properties. + child.prototype = _.create(parent.prototype, protoProps); + child.prototype.constructor = child; + + // Set a convenience property in case the parent's prototype is needed + // later. + child.__super__ = parent.prototype; + + return child; + }; + + // Set up inheritance for the model, collection, router, view and history. + Model.extend = Collection.extend = Router.extend = View.extend = History.extend = extend; + + // Throw an error when a URL is needed, and none is supplied. + var urlError = function() { + throw new Error('A "url" property or function must be specified'); + }; + + // Wrap an optional error callback with a fallback error event. + var wrapError = function(model, options) { + var error = options.error; + options.error = function(resp) { + if (error) error.call(options.context, model, resp, options); + model.trigger('error', model, resp, options); + }; + }; + + return Backbone; +}); diff --git a/openid-connect-server-webapp/src/main/webapp/resources/js/lib/jquery.js b/openid-connect-server-webapp/src/main/webapp/resources/js/lib/jquery.js index 6feb11086..b9f8937fd 100644 --- a/openid-connect-server-webapp/src/main/webapp/resources/js/lib/jquery.js +++ b/openid-connect-server-webapp/src/main/webapp/resources/js/lib/jquery.js @@ -1,27 +1,29 @@ /*! - * jQuery JavaScript Library v1.11.3 - * http://jquery.com/ + * jQuery JavaScript Library v3.6.0 + * https://jquery.com/ * * Includes Sizzle.js - * http://sizzlejs.com/ + * https://sizzlejs.com/ * - * Copyright 2005, 2014 jQuery Foundation, Inc. and other contributors + * Copyright OpenJS Foundation and other contributors * Released under the MIT license - * http://jquery.org/license + * https://jquery.org/license * - * Date: 2015-04-28T16:19Z + * Date: 2021-03-02T17:08Z */ +( function( global, factory ) { -(function( global, factory ) { + "use strict"; if ( typeof module === "object" && typeof module.exports === "object" ) { - // For CommonJS and CommonJS-like environments where a proper window is present, - // execute the factory and get jQuery - // For environments that do not inherently posses a window with a document - // (such as Node.js), expose a jQuery-making factory as module.exports - // This accentuates the need for the creation of a real window + + // For CommonJS and CommonJS-like environments where a proper `window` + // is present, execute the factory and get jQuery. + // For environments that do not have a `window` with a `document` + // (such as Node.js), expose a factory as module.exports. + // This accentuates the need for the creation of a real `window`. // e.g. var jQuery = require("jquery")(window); - // See ticket #14549 for more info + // See ticket #14549 for more info. module.exports = global.document ? factory( global, true ) : function( w ) { @@ -35,5194 +37,5123 @@ } // Pass this if window is not defined yet -}(typeof window !== "undefined" ? window : this, function( window, noGlobal ) { +} )( typeof window !== "undefined" ? window : this, function( window, noGlobal ) { -// Can't do this because several apps including ASP.NET trace -// the stack via arguments.caller.callee and Firefox dies if -// you try to trace through "use strict" call chains. (#13335) -// Support: Firefox 18+ -// +// Edge <= 12 - 13+, Firefox <=18 - 45+, IE 10 - 11, Safari 5.1 - 9+, iOS 6 - 9.1 +// throw exceptions when non-strict code (e.g., ASP.NET 4.5) accesses strict mode +// arguments.callee.caller (trac-13335). But as of jQuery 3.0 (2016), strict mode should be common +// enough that all such attempts are guarded in a try block. + "use strict"; -var deletedIds = []; + var arr = []; -var slice = deletedIds.slice; + var getProto = Object.getPrototypeOf; -var concat = deletedIds.concat; + var slice = arr.slice; + + var flat = arr.flat ? function( array ) { + return arr.flat.call( array ); + } : function( array ) { + return arr.concat.apply( [], array ); + }; -var push = deletedIds.push; -var indexOf = deletedIds.indexOf; + var push = arr.push; -var class2type = {}; + var indexOf = arr.indexOf; -var toString = class2type.toString; + var class2type = {}; -var hasOwn = class2type.hasOwnProperty; + var toString = class2type.toString; -var support = {}; + var hasOwn = class2type.hasOwnProperty; + var fnToString = hasOwn.toString; + var ObjectFunctionString = fnToString.call( Object ); -var - version = "1.11.3", + var support = {}; - // Define a local copy of jQuery - jQuery = function( selector, context ) { - // The jQuery object is actually just the init constructor 'enhanced' - // Need init if jQuery is called (just allow error to be thrown if not included) - return new jQuery.fn.init( selector, context ); - }, + var isFunction = function isFunction( obj ) { - // Support: Android<4.1, IE<9 - // Make sure we trim BOM and NBSP - rtrim = /^[\s\uFEFF\xA0]+|[\s\uFEFF\xA0]+$/g, + // Support: Chrome <=57, Firefox <=52 + // In some browsers, typeof returns "function" for HTML elements + // (i.e., `typeof document.createElement( "object" ) === "function"`). + // We don't want to classify *any* DOM node as a function. + // Support: QtWeb <=3.8.5, WebKit <=534.34, wkhtmltopdf tool <=0.12.5 + // Plus for old WebKit, typeof returns "function" for HTML collections + // (e.g., `typeof document.getElementsByTagName("div") === "function"`). (gh-4756) + return typeof obj === "function" && typeof obj.nodeType !== "number" && + typeof obj.item !== "function"; + }; - // Matches dashed string for camelizing - rmsPrefix = /^-ms-/, - rdashAlpha = /-([\da-z])/gi, - // Used by jQuery.camelCase as callback to replace() - fcamelCase = function( all, letter ) { - return letter.toUpperCase(); + var isWindow = function isWindow( obj ) { + return obj != null && obj === obj.window; }; -jQuery.fn = jQuery.prototype = { - // The current version of jQuery being used - jquery: version, - constructor: jQuery, + var document = window.document; - // Start with an empty selector - selector: "", - // The default length of a jQuery object is 0 - length: 0, - toArray: function() { - return slice.call( this ); - }, + var preservedScriptAttributes = { + type: true, + src: true, + nonce: true, + noModule: true + }; - // Get the Nth element in the matched element set OR - // Get the whole matched element set as a clean array - get: function( num ) { - return num != null ? + function DOMEval( code, node, doc ) { + doc = doc || document; + + var i, val, + script = doc.createElement( "script" ); + + script.text = code; + if ( node ) { + for ( i in preservedScriptAttributes ) { + + // Support: Firefox 64+, Edge 18+ + // Some browsers don't support the "nonce" property on scripts. + // On the other hand, just using `getAttribute` is not enough as + // the `nonce` attribute is reset to an empty string whenever it + // becomes browsing-context connected. + // See https://github.com/whatwg/html/issues/2369 + // See https://html.spec.whatwg.org/#nonce-attributes + // The `node.getAttribute` check was added for the sake of + // `jQuery.globalEval` so that it can fake a nonce-containing node + // via an object. + val = node[ i ] || node.getAttribute && node.getAttribute( i ); + if ( val ) { + script.setAttribute( i, val ); + } + } + } + doc.head.appendChild( script ).parentNode.removeChild( script ); + } - // Return just the one element from the set - ( num < 0 ? this[ num + this.length ] : this[ num ] ) : - // Return all the elements in a clean array - slice.call( this ); - }, + function toType( obj ) { + if ( obj == null ) { + return obj + ""; + } - // Take an array of elements and push it onto the stack - // (returning the new matched element set) - pushStack: function( elems ) { + // Support: Android <=2.3 only (functionish RegExp) + return typeof obj === "object" || typeof obj === "function" ? + class2type[ toString.call( obj ) ] || "object" : + typeof obj; + } + /* global Symbol */ +// Defining this global in .eslintrc.json would create a danger of using the global +// unguarded in another place, it seems safer to define global only for this module - // Build a new jQuery matched element set - var ret = jQuery.merge( this.constructor(), elems ); - // Add the old object onto the stack (as a reference) - ret.prevObject = this; - ret.context = this.context; - // Return the newly-formed element set - return ret; - }, - - // Execute a callback for every element in the matched set. - // (You can seed the arguments with an array of args, but this is - // only used internally.) - each: function( callback, args ) { - return jQuery.each( this, callback, args ); - }, - - map: function( callback ) { - return this.pushStack( jQuery.map(this, function( elem, i ) { - return callback.call( elem, i, elem ); - })); - }, - - slice: function() { - return this.pushStack( slice.apply( this, arguments ) ); - }, - - first: function() { - return this.eq( 0 ); - }, - - last: function() { - return this.eq( -1 ); - }, - - eq: function( i ) { - var len = this.length, - j = +i + ( i < 0 ? len : 0 ); - return this.pushStack( j >= 0 && j < len ? [ this[j] ] : [] ); - }, - - end: function() { - return this.prevObject || this.constructor(null); - }, - - // For internal use only. - // Behaves like an Array's method, not like a jQuery method. - push: push, - sort: deletedIds.sort, - splice: deletedIds.splice -}; - -jQuery.extend = jQuery.fn.extend = function() { - var src, copyIsArray, copy, name, options, clone, - target = arguments[0] || {}, - i = 1, - length = arguments.length, - deep = false; - - // Handle a deep copy situation - if ( typeof target === "boolean" ) { - deep = target; - - // skip the boolean and the target - target = arguments[ i ] || {}; - i++; - } + var + version = "3.6.0", - // Handle case when target is a string or something (possible in deep copy) - if ( typeof target !== "object" && !jQuery.isFunction(target) ) { - target = {}; - } + // Define a local copy of jQuery + jQuery = function( selector, context ) { - // extend jQuery itself if only one argument is passed - if ( i === length ) { - target = this; - i--; - } + // The jQuery object is actually just the init constructor 'enhanced' + // Need init if jQuery is called (just allow error to be thrown if not included) + return new jQuery.fn.init( selector, context ); + }; - for ( ; i < length; i++ ) { - // Only deal with non-null/undefined values - if ( (options = arguments[ i ]) != null ) { - // Extend the base object - for ( name in options ) { - src = target[ name ]; - copy = options[ name ]; + jQuery.fn = jQuery.prototype = { - // Prevent never-ending loop - if ( target === copy ) { - continue; - } + // The current version of jQuery being used + jquery: version, - // Recurse if we're merging plain objects or arrays - if ( deep && copy && ( jQuery.isPlainObject(copy) || (copyIsArray = jQuery.isArray(copy)) ) ) { - if ( copyIsArray ) { - copyIsArray = false; - clone = src && jQuery.isArray(src) ? src : []; + constructor: jQuery, - } else { - clone = src && jQuery.isPlainObject(src) ? src : {}; - } + // The default length of a jQuery object is 0 + length: 0, + + toArray: function() { + return slice.call( this ); + }, - // Never move original objects, clone them - target[ name ] = jQuery.extend( deep, clone, copy ); + // Get the Nth element in the matched element set OR + // Get the whole matched element set as a clean array + get: function( num ) { - // Don't bring in undefined values - } else if ( copy !== undefined ) { - target[ name ] = copy; - } + // Return all the elements in a clean array + if ( num == null ) { + return slice.call( this ); } - } - } - // Return the modified object - return target; -}; + // Return just the one element from the set + return num < 0 ? this[ num + this.length ] : this[ num ]; + }, -jQuery.extend({ - // Unique for each copy of jQuery on the page - expando: "jQuery" + ( version + Math.random() ).replace( /\D/g, "" ), + // Take an array of elements and push it onto the stack + // (returning the new matched element set) + pushStack: function( elems ) { - // Assume jQuery is ready without the ready module - isReady: true, + // Build a new jQuery matched element set + var ret = jQuery.merge( this.constructor(), elems ); - error: function( msg ) { - throw new Error( msg ); - }, + // Add the old object onto the stack (as a reference) + ret.prevObject = this; - noop: function() {}, + // Return the newly-formed element set + return ret; + }, - // See test/unit/core.js for details concerning isFunction. - // Since version 1.3, DOM methods and functions like alert - // aren't supported. They return false on IE (#2968). - isFunction: function( obj ) { - return jQuery.type(obj) === "function"; - }, + // Execute a callback for every element in the matched set. + each: function( callback ) { + return jQuery.each( this, callback ); + }, - isArray: Array.isArray || function( obj ) { - return jQuery.type(obj) === "array"; - }, + map: function( callback ) { + return this.pushStack( jQuery.map( this, function( elem, i ) { + return callback.call( elem, i, elem ); + } ) ); + }, - isWindow: function( obj ) { - /* jshint eqeqeq: false */ - return obj != null && obj == obj.window; - }, + slice: function() { + return this.pushStack( slice.apply( this, arguments ) ); + }, - isNumeric: function( obj ) { - // parseFloat NaNs numeric-cast false positives (null|true|false|"") - // ...but misinterprets leading-number strings, particularly hex literals ("0x...") - // subtraction forces infinities to NaN - // adding 1 corrects loss of precision from parseFloat (#15100) - return !jQuery.isArray( obj ) && (obj - parseFloat( obj ) + 1) >= 0; - }, + first: function() { + return this.eq( 0 ); + }, - isEmptyObject: function( obj ) { - var name; - for ( name in obj ) { - return false; - } - return true; - }, + last: function() { + return this.eq( -1 ); + }, - isPlainObject: function( obj ) { - var key; + even: function() { + return this.pushStack( jQuery.grep( this, function( _elem, i ) { + return ( i + 1 ) % 2; + } ) ); + }, - // Must be an Object. - // Because of IE, we also have to check the presence of the constructor property. - // Make sure that DOM nodes and window objects don't pass through, as well - if ( !obj || jQuery.type(obj) !== "object" || obj.nodeType || jQuery.isWindow( obj ) ) { - return false; - } + odd: function() { + return this.pushStack( jQuery.grep( this, function( _elem, i ) { + return i % 2; + } ) ); + }, - try { - // Not own constructor property must be Object - if ( obj.constructor && - !hasOwn.call(obj, "constructor") && - !hasOwn.call(obj.constructor.prototype, "isPrototypeOf") ) { - return false; - } - } catch ( e ) { - // IE8,9 Will throw exceptions on certain host objects #9897 - return false; - } + eq: function( i ) { + var len = this.length, + j = +i + ( i < 0 ? len : 0 ); + return this.pushStack( j >= 0 && j < len ? [ this[ j ] ] : [] ); + }, - // Support: IE<9 - // Handle iteration over inherited properties before own properties. - if ( support.ownLast ) { - for ( key in obj ) { - return hasOwn.call( obj, key ); - } - } + end: function() { + return this.prevObject || this.constructor(); + }, - // Own properties are enumerated firstly, so to speed up, - // if last one is own, then all properties are own. - for ( key in obj ) {} + // For internal use only. + // Behaves like an Array's method, not like a jQuery method. + push: push, + sort: arr.sort, + splice: arr.splice + }; - return key === undefined || hasOwn.call( obj, key ); - }, + jQuery.extend = jQuery.fn.extend = function() { + var options, name, src, copy, copyIsArray, clone, + target = arguments[ 0 ] || {}, + i = 1, + length = arguments.length, + deep = false; - type: function( obj ) { - if ( obj == null ) { - return obj + ""; + // Handle a deep copy situation + if ( typeof target === "boolean" ) { + deep = target; + + // Skip the boolean and the target + target = arguments[ i ] || {}; + i++; } - return typeof obj === "object" || typeof obj === "function" ? - class2type[ toString.call(obj) ] || "object" : - typeof obj; - }, - - // Evaluates a script in a global context - // Workarounds based on findings by Jim Driscoll - // http://weblogs.java.net/blog/driscoll/archive/2009/09/08/eval-javascript-global-context - globalEval: function( data ) { - if ( data && jQuery.trim( data ) ) { - // We use execScript on Internet Explorer - // We use an anonymous function so that context is window - // rather than jQuery in Firefox - ( window.execScript || function( data ) { - window[ "eval" ].call( window, data ); - } )( data ); - } - }, - - // Convert dashed to camelCase; used by the css and data modules - // Microsoft forgot to hump their vendor prefix (#9572) - camelCase: function( string ) { - return string.replace( rmsPrefix, "ms-" ).replace( rdashAlpha, fcamelCase ); - }, - nodeName: function( elem, name ) { - return elem.nodeName && elem.nodeName.toLowerCase() === name.toLowerCase(); - }, + // Handle case when target is a string or something (possible in deep copy) + if ( typeof target !== "object" && !isFunction( target ) ) { + target = {}; + } - // args is for internal usage only - each: function( obj, callback, args ) { - var value, - i = 0, - length = obj.length, - isArray = isArraylike( obj ); + // Extend jQuery itself if only one argument is passed + if ( i === length ) { + target = this; + i--; + } - if ( args ) { - if ( isArray ) { - for ( ; i < length; i++ ) { - value = callback.apply( obj[ i ], args ); + for ( ; i < length; i++ ) { - if ( value === false ) { - break; - } - } - } else { - for ( i in obj ) { - value = callback.apply( obj[ i ], args ); + // Only deal with non-null/undefined values + if ( ( options = arguments[ i ] ) != null ) { - if ( value === false ) { - break; + // Extend the base object + for ( name in options ) { + copy = options[ name ]; + + // Prevent Object.prototype pollution + // Prevent never-ending loop + if ( name === "__proto__" || target === copy ) { + continue; } - } - } - // A special, fast, case for the most common use of each - } else { - if ( isArray ) { - for ( ; i < length; i++ ) { - value = callback.call( obj[ i ], i, obj[ i ] ); + // Recurse if we're merging plain objects or arrays + if ( deep && copy && ( jQuery.isPlainObject( copy ) || + ( copyIsArray = Array.isArray( copy ) ) ) ) { + src = target[ name ]; - if ( value === false ) { - break; - } - } - } else { - for ( i in obj ) { - value = callback.call( obj[ i ], i, obj[ i ] ); + // Ensure proper type for the source value + if ( copyIsArray && !Array.isArray( src ) ) { + clone = []; + } else if ( !copyIsArray && !jQuery.isPlainObject( src ) ) { + clone = {}; + } else { + clone = src; + } + copyIsArray = false; - if ( value === false ) { - break; + // Never move original objects, clone them + target[ name ] = jQuery.extend( deep, clone, copy ); + + // Don't bring in undefined values + } else if ( copy !== undefined ) { + target[ name ] = copy; } } } } - return obj; - }, + // Return the modified object + return target; + }; - // Support: Android<4.1, IE<9 - trim: function( text ) { - return text == null ? - "" : - ( text + "" ).replace( rtrim, "" ); - }, + jQuery.extend( { - // results is for internal usage only - makeArray: function( arr, results ) { - var ret = results || []; + // Unique for each copy of jQuery on the page + expando: "jQuery" + ( version + Math.random() ).replace( /\D/g, "" ), - if ( arr != null ) { - if ( isArraylike( Object(arr) ) ) { - jQuery.merge( ret, - typeof arr === "string" ? - [ arr ] : arr - ); - } else { - push.call( ret, arr ); - } - } + // Assume jQuery is ready without the ready module + isReady: true, - return ret; - }, + error: function( msg ) { + throw new Error( msg ); + }, - inArray: function( elem, arr, i ) { - var len; + noop: function() {}, - if ( arr ) { - if ( indexOf ) { - return indexOf.call( arr, elem, i ); + isPlainObject: function( obj ) { + var proto, Ctor; + + // Detect obvious negatives + // Use toString instead of jQuery.type to catch host objects + if ( !obj || toString.call( obj ) !== "[object Object]" ) { + return false; } - len = arr.length; - i = i ? i < 0 ? Math.max( 0, len + i ) : i : 0; + proto = getProto( obj ); - for ( ; i < len; i++ ) { - // Skip accessing in sparse arrays - if ( i in arr && arr[ i ] === elem ) { - return i; - } + // Objects with no prototype (e.g., `Object.create( null )`) are plain + if ( !proto ) { + return true; } - } - - return -1; - }, - merge: function( first, second ) { - var len = +second.length, - j = 0, - i = first.length; + // Objects with prototype are plain iff they were constructed by a global Object function + Ctor = hasOwn.call( proto, "constructor" ) && proto.constructor; + return typeof Ctor === "function" && fnToString.call( Ctor ) === ObjectFunctionString; + }, - while ( j < len ) { - first[ i++ ] = second[ j++ ]; - } + isEmptyObject: function( obj ) { + var name; - // Support: IE<9 - // Workaround casting of .length to NaN on otherwise arraylike objects (e.g., NodeLists) - if ( len !== len ) { - while ( second[j] !== undefined ) { - first[ i++ ] = second[ j++ ]; + for ( name in obj ) { + return false; } - } + return true; + }, - first.length = i; + // Evaluates a script in a provided context; falls back to the global one + // if not specified. + globalEval: function( code, options, doc ) { + DOMEval( code, { nonce: options && options.nonce }, doc ); + }, - return first; - }, + each: function( obj, callback ) { + var length, i = 0; - grep: function( elems, callback, invert ) { - var callbackInverse, - matches = [], - i = 0, - length = elems.length, - callbackExpect = !invert; + if ( isArrayLike( obj ) ) { + length = obj.length; + for ( ; i < length; i++ ) { + if ( callback.call( obj[ i ], i, obj[ i ] ) === false ) { + break; + } + } + } else { + for ( i in obj ) { + if ( callback.call( obj[ i ], i, obj[ i ] ) === false ) { + break; + } + } + } - // Go through the array, only saving the items - // that pass the validator function - for ( ; i < length; i++ ) { - callbackInverse = !callback( elems[ i ], i ); - if ( callbackInverse !== callbackExpect ) { - matches.push( elems[ i ] ); + return obj; + }, + + // results is for internal usage only + makeArray: function( arr, results ) { + var ret = results || []; + + if ( arr != null ) { + if ( isArrayLike( Object( arr ) ) ) { + jQuery.merge( ret, + typeof arr === "string" ? + [ arr ] : arr + ); + } else { + push.call( ret, arr ); + } } - } - return matches; - }, + return ret; + }, - // arg is for internal usage only - map: function( elems, callback, arg ) { - var value, - i = 0, - length = elems.length, - isArray = isArraylike( elems ), - ret = []; + inArray: function( elem, arr, i ) { + return arr == null ? -1 : indexOf.call( arr, elem, i ); + }, - // Go through the array, translating each of the items to their new values - if ( isArray ) { - for ( ; i < length; i++ ) { - value = callback( elems[ i ], i, arg ); + // Support: Android <=4.0 only, PhantomJS 1 only + // push.apply(_, arraylike) throws on ancient WebKit + merge: function( first, second ) { + var len = +second.length, + j = 0, + i = first.length; - if ( value != null ) { - ret.push( value ); - } + for ( ; j < len; j++ ) { + first[ i++ ] = second[ j ]; } - // Go through every key on the object, - } else { - for ( i in elems ) { - value = callback( elems[ i ], i, arg ); + first.length = i; + + return first; + }, - if ( value != null ) { - ret.push( value ); + grep: function( elems, callback, invert ) { + var callbackInverse, + matches = [], + i = 0, + length = elems.length, + callbackExpect = !invert; + + // Go through the array, only saving the items + // that pass the validator function + for ( ; i < length; i++ ) { + callbackInverse = !callback( elems[ i ], i ); + if ( callbackInverse !== callbackExpect ) { + matches.push( elems[ i ] ); } } - } - // Flatten any nested arrays - return concat.apply( [], ret ); - }, + return matches; + }, - // A global GUID counter for objects - guid: 1, + // arg is for internal usage only + map: function( elems, callback, arg ) { + var length, value, + i = 0, + ret = []; - // Bind a function to a context, optionally partially applying any - // arguments. - proxy: function( fn, context ) { - var args, proxy, tmp; + // Go through the array, translating each of the items to their new values + if ( isArrayLike( elems ) ) { + length = elems.length; + for ( ; i < length; i++ ) { + value = callback( elems[ i ], i, arg ); - if ( typeof context === "string" ) { - tmp = fn[ context ]; - context = fn; - fn = tmp; - } + if ( value != null ) { + ret.push( value ); + } + } - // Quick check to determine if target is callable, in the spec - // this throws a TypeError, but we will just return undefined. - if ( !jQuery.isFunction( fn ) ) { - return undefined; - } + // Go through every key on the object, + } else { + for ( i in elems ) { + value = callback( elems[ i ], i, arg ); - // Simulated bind - args = slice.call( arguments, 2 ); - proxy = function() { - return fn.apply( context || this, args.concat( slice.call( arguments ) ) ); - }; + if ( value != null ) { + ret.push( value ); + } + } + } - // Set the guid of unique handler to the same of original handler, so it can be removed - proxy.guid = fn.guid = fn.guid || jQuery.guid++; + // Flatten any nested arrays + return flat( ret ); + }, - return proxy; - }, + // A global GUID counter for objects + guid: 1, - now: function() { - return +( new Date() ); - }, + // jQuery.support is not used in Core but other projects attach their + // properties to it so it needs to exist. + support: support + } ); - // jQuery.support is not used in Core but other projects attach their - // properties to it so it needs to exist. - support: support -}); + if ( typeof Symbol === "function" ) { + jQuery.fn[ Symbol.iterator ] = arr[ Symbol.iterator ]; + } // Populate the class2type map -jQuery.each("Boolean Number String Function Array Date RegExp Object Error".split(" "), function(i, name) { - class2type[ "[object " + name + "]" ] = name.toLowerCase(); -}); + jQuery.each( "Boolean Number String Function Array Date RegExp Object Error Symbol".split( " " ), + function( _i, name ) { + class2type[ "[object " + name + "]" ] = name.toLowerCase(); + } ); -function isArraylike( obj ) { + function isArrayLike( obj ) { - // Support: iOS 8.2 (not reproducible in simulator) - // `in` check used to prevent JIT error (gh-2145) - // hasOwn isn't used here due to false negatives - // regarding Nodelist length in IE - var length = "length" in obj && obj.length, - type = jQuery.type( obj ); + // Support: real iOS 8.2 only (not reproducible in simulator) + // `in` check used to prevent JIT error (gh-2145) + // hasOwn isn't used here due to false negatives + // regarding Nodelist length in IE + var length = !!obj && "length" in obj && obj.length, + type = toType( obj ); - if ( type === "function" || jQuery.isWindow( obj ) ) { - return false; - } + if ( isFunction( obj ) || isWindow( obj ) ) { + return false; + } - if ( obj.nodeType === 1 && length ) { - return true; + return type === "array" || length === 0 || + typeof length === "number" && length > 0 && ( length - 1 ) in obj; } - - return type === "array" || length === 0 || - typeof length === "number" && length > 0 && ( length - 1 ) in obj; -} -var Sizzle = -/*! - * Sizzle CSS Selector Engine v2.2.0-pre - * http://sizzlejs.com/ + var Sizzle = + /*! + * Sizzle CSS Selector Engine v2.3.6 + * https://sizzlejs.com/ * - * Copyright 2008, 2014 jQuery Foundation, Inc. and other contributors + * Copyright JS Foundation and other contributors * Released under the MIT license - * http://jquery.org/license + * https://js.foundation/ * - * Date: 2014-12-16 + * Date: 2021-02-16 */ -(function( window ) { - -var i, - support, - Expr, - getText, - isXML, - tokenize, - compile, - select, - outermostContext, - sortInput, - hasDuplicate, - - // Local document vars - setDocument, - document, - docElem, - documentIsHTML, - rbuggyQSA, - rbuggyMatches, - matches, - contains, - - // Instance-specific data - expando = "sizzle" + 1 * new Date(), - preferredDoc = window.document, - dirruns = 0, - done = 0, - classCache = createCache(), - tokenCache = createCache(), - compilerCache = createCache(), - sortOrder = function( a, b ) { - if ( a === b ) { - hasDuplicate = true; - } - return 0; - }, - - // General-purpose constants - MAX_NEGATIVE = 1 << 31, - - // Instance methods - hasOwn = ({}).hasOwnProperty, - arr = [], - pop = arr.pop, - push_native = arr.push, - push = arr.push, - slice = arr.slice, - // Use a stripped-down indexOf as it's faster than native - // http://jsperf.com/thor-indexof-vs-for/5 - indexOf = function( list, elem ) { - var i = 0, - len = list.length; - for ( ; i < len; i++ ) { - if ( list[i] === elem ) { - return i; - } - } - return -1; - }, - - booleans = "checked|selected|async|autofocus|autoplay|controls|defer|disabled|hidden|ismap|loop|multiple|open|readonly|required|scoped", - - // Regular expressions - - // Whitespace characters http://www.w3.org/TR/css3-selectors/#whitespace - whitespace = "[\\x20\\t\\r\\n\\f]", - // http://www.w3.org/TR/css3-syntax/#characters - characterEncoding = "(?:\\\\.|[\\w-]|[^\\x00-\\xa0])+", - - // Loosely modeled on CSS identifier characters - // An unquoted value should be a CSS identifier http://www.w3.org/TR/css3-selectors/#attribute-selectors - // Proper syntax: http://www.w3.org/TR/CSS21/syndata.html#value-def-identifier - identifier = characterEncoding.replace( "w", "w#" ), - - // Attribute selectors: http://www.w3.org/TR/selectors/#attribute-selectors - attributes = "\\[" + whitespace + "*(" + characterEncoding + ")(?:" + whitespace + - // Operator (capture 2) - "*([*^$|!~]?=)" + whitespace + - // "Attribute values must be CSS identifiers [capture 5] or strings [capture 3 or capture 4]" - "*(?:'((?:\\\\.|[^\\\\'])*)'|\"((?:\\\\.|[^\\\\\"])*)\"|(" + identifier + "))|)" + whitespace + - "*\\]", - - pseudos = ":(" + characterEncoding + ")(?:\\((" + - // To reduce the number of selectors needing tokenize in the preFilter, prefer arguments: - // 1. quoted (capture 3; capture 4 or capture 5) - "('((?:\\\\.|[^\\\\'])*)'|\"((?:\\\\.|[^\\\\\"])*)\")|" + - // 2. simple (capture 6) - "((?:\\\\.|[^\\\\()[\\]]|" + attributes + ")*)|" + - // 3. anything else (capture 2) - ".*" + - ")\\)|)", - - // Leading and non-escaped trailing whitespace, capturing some non-whitespace characters preceding the latter - rwhitespace = new RegExp( whitespace + "+", "g" ), - rtrim = new RegExp( "^" + whitespace + "+|((?:^|[^\\\\])(?:\\\\.)*)" + whitespace + "+$", "g" ), - - rcomma = new RegExp( "^" + whitespace + "*," + whitespace + "*" ), - rcombinators = new RegExp( "^" + whitespace + "*([>+~]|" + whitespace + ")" + whitespace + "*" ), - - rattributeQuotes = new RegExp( "=" + whitespace + "*([^\\]'\"]*?)" + whitespace + "*\\]", "g" ), - - rpseudo = new RegExp( pseudos ), - ridentifier = new RegExp( "^" + identifier + "$" ), - - matchExpr = { - "ID": new RegExp( "^#(" + characterEncoding + ")" ), - "CLASS": new RegExp( "^\\.(" + characterEncoding + ")" ), - "TAG": new RegExp( "^(" + characterEncoding.replace( "w", "w*" ) + ")" ), - "ATTR": new RegExp( "^" + attributes ), - "PSEUDO": new RegExp( "^" + pseudos ), - "CHILD": new RegExp( "^:(only|first|last|nth|nth-last)-(child|of-type)(?:\\(" + whitespace + - "*(even|odd|(([+-]|)(\\d*)n|)" + whitespace + "*(?:([+-]|)" + whitespace + - "*(\\d+)|))" + whitespace + "*\\)|)", "i" ), - "bool": new RegExp( "^(?:" + booleans + ")$", "i" ), - // For use in libraries implementing .is() - // We use this for POS matching in `select` - "needsContext": new RegExp( "^" + whitespace + "*[>+~]|:(even|odd|eq|gt|lt|nth|first|last)(?:\\(" + - whitespace + "*((?:-\\d)?\\d*)" + whitespace + "*\\)|)(?=[^-]|$)", "i" ) - }, - - rinputs = /^(?:input|select|textarea|button)$/i, - rheader = /^h\d$/i, - - rnative = /^[^{]+\{\s*\[native \w/, - - // Easily-parseable/retrievable ID or TAG or CLASS selectors - rquickExpr = /^(?:#([\w-]+)|(\w+)|\.([\w-]+))$/, - - rsibling = /[+~]/, - rescape = /'|\\/g, - - // CSS escapes http://www.w3.org/TR/CSS21/syndata.html#escaped-characters - runescape = new RegExp( "\\\\([\\da-f]{1,6}" + whitespace + "?|(" + whitespace + ")|.)", "ig" ), - funescape = function( _, escaped, escapedWhitespace ) { - var high = "0x" + escaped - 0x10000; - // NaN means non-codepoint - // Support: Firefox<24 - // Workaround erroneous numeric interpretation of +"0x" - return high !== high || escapedWhitespace ? - escaped : - high < 0 ? - // BMP codepoint - String.fromCharCode( high + 0x10000 ) : - // Supplemental Plane codepoint (surrogate pair) - String.fromCharCode( high >> 10 | 0xD800, high & 0x3FF | 0xDC00 ); - }, - - // Used for iframes - // See setDocument() - // Removing the function wrapper causes a "Permission Denied" - // error in IE - unloadHandler = function() { - setDocument(); - }; + ( function( window ) { + var i, + support, + Expr, + getText, + isXML, + tokenize, + compile, + select, + outermostContext, + sortInput, + hasDuplicate, + + // Local document vars + setDocument, + document, + docElem, + documentIsHTML, + rbuggyQSA, + rbuggyMatches, + matches, + contains, + + // Instance-specific data + expando = "sizzle" + 1 * new Date(), + preferredDoc = window.document, + dirruns = 0, + done = 0, + classCache = createCache(), + tokenCache = createCache(), + compilerCache = createCache(), + nonnativeSelectorCache = createCache(), + sortOrder = function( a, b ) { + if ( a === b ) { + hasDuplicate = true; + } + return 0; + }, -// Optimize for push.apply( _, NodeList ) -try { - push.apply( - (arr = slice.call( preferredDoc.childNodes )), - preferredDoc.childNodes - ); - // Support: Android<4.0 - // Detect silently failing push.apply - arr[ preferredDoc.childNodes.length ].nodeType; -} catch ( e ) { - push = { apply: arr.length ? - - // Leverage slice if possible - function( target, els ) { - push_native.apply( target, slice.call(els) ); - } : - - // Support: IE<9 - // Otherwise append directly - function( target, els ) { - var j = target.length, - i = 0; - // Can't trust NodeList.length - while ( (target[j++] = els[i++]) ) {} - target.length = j - 1; - } - }; -} + // Instance methods + hasOwn = ( {} ).hasOwnProperty, + arr = [], + pop = arr.pop, + pushNative = arr.push, + push = arr.push, + slice = arr.slice, + + // Use a stripped-down indexOf as it's faster than native + // https://jsperf.com/thor-indexof-vs-for/5 + indexOf = function( list, elem ) { + var i = 0, + len = list.length; + for ( ; i < len; i++ ) { + if ( list[ i ] === elem ) { + return i; + } + } + return -1; + }, -function Sizzle( selector, context, results, seed ) { - var match, elem, m, nodeType, - // QSA vars - i, groups, old, nid, newContext, newSelector; + booleans = "checked|selected|async|autofocus|autoplay|controls|defer|disabled|hidden|" + + "ismap|loop|multiple|open|readonly|required|scoped", - if ( ( context ? context.ownerDocument || context : preferredDoc ) !== document ) { - setDocument( context ); - } + // Regular expressions - context = context || document; - results = results || []; - nodeType = context.nodeType; + // http://www.w3.org/TR/css3-selectors/#whitespace + whitespace = "[\\x20\\t\\r\\n\\f]", - if ( typeof selector !== "string" || !selector || - nodeType !== 1 && nodeType !== 9 && nodeType !== 11 ) { + // https://www.w3.org/TR/css-syntax-3/#ident-token-diagram + identifier = "(?:\\\\[\\da-fA-F]{1,6}" + whitespace + + "?|\\\\[^\\r\\n\\f]|[\\w-]|[^\0-\\x7f])+", - return results; - } + // Attribute selectors: http://www.w3.org/TR/selectors/#attribute-selectors + attributes = "\\[" + whitespace + "*(" + identifier + ")(?:" + whitespace + - if ( !seed && documentIsHTML ) { - - // Try to shortcut find operations when possible (e.g., not under DocumentFragment) - if ( nodeType !== 11 && (match = rquickExpr.exec( selector )) ) { - // Speed-up: Sizzle("#ID") - if ( (m = match[1]) ) { - if ( nodeType === 9 ) { - elem = context.getElementById( m ); - // Check parentNode to catch when Blackberry 4.6 returns - // nodes that are no longer in the document (jQuery #6963) - if ( elem && elem.parentNode ) { - // Handle the case where IE, Opera, and Webkit return items - // by name instead of ID - if ( elem.id === m ) { - results.push( elem ); - return results; - } - } else { - return results; - } - } else { - // Context is not a document - if ( context.ownerDocument && (elem = context.ownerDocument.getElementById( m )) && - contains( context, elem ) && elem.id === m ) { - results.push( elem ); - return results; - } - } + // Operator (capture 2) + "*([*^$|!~]?=)" + whitespace + - // Speed-up: Sizzle("TAG") - } else if ( match[2] ) { - push.apply( results, context.getElementsByTagName( selector ) ); - return results; + // "Attribute values must be CSS identifiers [capture 5] + // or strings [capture 3 or capture 4]" + "*(?:'((?:\\\\.|[^\\\\'])*)'|\"((?:\\\\.|[^\\\\\"])*)\"|(" + identifier + "))|)" + + whitespace + "*\\]", - // Speed-up: Sizzle(".CLASS") - } else if ( (m = match[3]) && support.getElementsByClassName ) { - push.apply( results, context.getElementsByClassName( m ) ); - return results; - } - } + pseudos = ":(" + identifier + ")(?:\\((" + - // QSA path - if ( support.qsa && (!rbuggyQSA || !rbuggyQSA.test( selector )) ) { - nid = old = expando; - newContext = context; - newSelector = nodeType !== 1 && selector; + // To reduce the number of selectors needing tokenize in the preFilter, prefer arguments: + // 1. quoted (capture 3; capture 4 or capture 5) + "('((?:\\\\.|[^\\\\'])*)'|\"((?:\\\\.|[^\\\\\"])*)\")|" + - // qSA works strangely on Element-rooted queries - // We can work around this by specifying an extra ID on the root - // and working up from there (Thanks to Andrew Dupont for the technique) - // IE 8 doesn't work on object elements - if ( nodeType === 1 && context.nodeName.toLowerCase() !== "object" ) { - groups = tokenize( selector ); + // 2. simple (capture 6) + "((?:\\\\.|[^\\\\()[\\]]|" + attributes + ")*)|" + - if ( (old = context.getAttribute("id")) ) { - nid = old.replace( rescape, "\\$&" ); - } else { - context.setAttribute( "id", nid ); - } - nid = "[id='" + nid + "'] "; + // 3. anything else (capture 2) + ".*" + + ")\\)|)", - i = groups.length; - while ( i-- ) { - groups[i] = nid + toSelector( groups[i] ); - } - newContext = rsibling.test( selector ) && testContext( context.parentNode ) || context; - newSelector = groups.join(","); - } + // Leading and non-escaped trailing whitespace, capturing some non-whitespace characters preceding the latter + rwhitespace = new RegExp( whitespace + "+", "g" ), + rtrim = new RegExp( "^" + whitespace + "+|((?:^|[^\\\\])(?:\\\\.)*)" + + whitespace + "+$", "g" ), - if ( newSelector ) { - try { - push.apply( results, - newContext.querySelectorAll( newSelector ) - ); - return results; - } catch(qsaError) { - } finally { - if ( !old ) { - context.removeAttribute("id"); - } - } - } - } - } + rcomma = new RegExp( "^" + whitespace + "*," + whitespace + "*" ), + rcombinators = new RegExp( "^" + whitespace + "*([>+~]|" + whitespace + ")" + whitespace + + "*" ), + rdescend = new RegExp( whitespace + "|>" ), - // All others - return select( selector.replace( rtrim, "$1" ), context, results, seed ); -} + rpseudo = new RegExp( pseudos ), + ridentifier = new RegExp( "^" + identifier + "$" ), -/** - * Create key-value caches of limited size - * @returns {Function(string, Object)} Returns the Object data after storing it on itself with - * property name the (space-suffixed) string and (if the cache is larger than Expr.cacheLength) - * deleting the oldest entry - */ -function createCache() { - var keys = []; + matchExpr = { + "ID": new RegExp( "^#(" + identifier + ")" ), + "CLASS": new RegExp( "^\\.(" + identifier + ")" ), + "TAG": new RegExp( "^(" + identifier + "|[*])" ), + "ATTR": new RegExp( "^" + attributes ), + "PSEUDO": new RegExp( "^" + pseudos ), + "CHILD": new RegExp( "^:(only|first|last|nth|nth-last)-(child|of-type)(?:\\(" + + whitespace + "*(even|odd|(([+-]|)(\\d*)n|)" + whitespace + "*(?:([+-]|)" + + whitespace + "*(\\d+)|))" + whitespace + "*\\)|)", "i" ), + "bool": new RegExp( "^(?:" + booleans + ")$", "i" ), - function cache( key, value ) { - // Use (key + " ") to avoid collision with native prototype properties (see Issue #157) - if ( keys.push( key + " " ) > Expr.cacheLength ) { - // Only keep the most recent entries - delete cache[ keys.shift() ]; - } - return (cache[ key + " " ] = value); - } - return cache; -} + // For use in libraries implementing .is() + // We use this for POS matching in `select` + "needsContext": new RegExp( "^" + whitespace + + "*[>+~]|:(even|odd|eq|gt|lt|nth|first|last)(?:\\(" + whitespace + + "*((?:-\\d)?\\d*)" + whitespace + "*\\)|)(?=[^-]|$)", "i" ) + }, -/** - * Mark a function for special use by Sizzle - * @param {Function} fn The function to mark - */ -function markFunction( fn ) { - fn[ expando ] = true; - return fn; -} - -/** - * Support testing using an element - * @param {Function} fn Passed the created div and expects a boolean result - */ -function assert( fn ) { - var div = document.createElement("div"); + rhtml = /HTML$/i, + rinputs = /^(?:input|select|textarea|button)$/i, + rheader = /^h\d$/i, - try { - return !!fn( div ); - } catch (e) { - return false; - } finally { - // Remove from its parent by default - if ( div.parentNode ) { - div.parentNode.removeChild( div ); - } - // release memory in IE - div = null; - } -} + rnative = /^[^{]+\{\s*\[native \w/, -/** - * Adds the same handler for all of the specified attrs - * @param {String} attrs Pipe-separated list of attributes - * @param {Function} handler The method that will be applied - */ -function addHandle( attrs, handler ) { - var arr = attrs.split("|"), - i = attrs.length; + // Easily-parseable/retrievable ID or TAG or CLASS selectors + rquickExpr = /^(?:#([\w-]+)|(\w+)|\.([\w-]+))$/, - while ( i-- ) { - Expr.attrHandle[ arr[i] ] = handler; - } -} + rsibling = /[+~]/, -/** - * Checks document order of two siblings - * @param {Element} a - * @param {Element} b - * @returns {Number} Returns less than 0 if a precedes b, greater than 0 if a follows b - */ -function siblingCheck( a, b ) { - var cur = b && a, - diff = cur && a.nodeType === 1 && b.nodeType === 1 && - ( ~b.sourceIndex || MAX_NEGATIVE ) - - ( ~a.sourceIndex || MAX_NEGATIVE ); - - // Use IE sourceIndex if available on both nodes - if ( diff ) { - return diff; - } + // CSS escapes + // http://www.w3.org/TR/CSS21/syndata.html#escaped-characters + runescape = new RegExp( "\\\\[\\da-fA-F]{1,6}" + whitespace + "?|\\\\([^\\r\\n\\f])", "g" ), + funescape = function( escape, nonHex ) { + var high = "0x" + escape.slice( 1 ) - 0x10000; - // Check if b follows a - if ( cur ) { - while ( (cur = cur.nextSibling) ) { - if ( cur === b ) { - return -1; - } - } - } + return nonHex ? - return a ? 1 : -1; -} + // Strip the backslash prefix from a non-hex escape sequence + nonHex : -/** - * Returns a function to use in pseudos for input types - * @param {String} type - */ -function createInputPseudo( type ) { - return function( elem ) { - var name = elem.nodeName.toLowerCase(); - return name === "input" && elem.type === type; - }; -} + // Replace a hexadecimal escape sequence with the encoded Unicode code point + // Support: IE <=11+ + // For values outside the Basic Multilingual Plane (BMP), manually construct a + // surrogate pair + high < 0 ? + String.fromCharCode( high + 0x10000 ) : + String.fromCharCode( high >> 10 | 0xD800, high & 0x3FF | 0xDC00 ); + }, -/** - * Returns a function to use in pseudos for buttons - * @param {String} type - */ -function createButtonPseudo( type ) { - return function( elem ) { - var name = elem.nodeName.toLowerCase(); - return (name === "input" || name === "button") && elem.type === type; - }; -} + // CSS string/identifier serialization + // https://drafts.csswg.org/cssom/#common-serializing-idioms + rcssescape = /([\0-\x1f\x7f]|^-?\d)|^-$|[^\0-\x1f\x7f-\uFFFF\w-]/g, + fcssescape = function( ch, asCodePoint ) { + if ( asCodePoint ) { -/** - * Returns a function to use in pseudos for positionals - * @param {Function} fn - */ -function createPositionalPseudo( fn ) { - return markFunction(function( argument ) { - argument = +argument; - return markFunction(function( seed, matches ) { - var j, - matchIndexes = fn( [], seed.length, argument ), - i = matchIndexes.length; - - // Match elements found at the specified indexes - while ( i-- ) { - if ( seed[ (j = matchIndexes[i]) ] ) { - seed[j] = !(matches[j] = seed[j]); - } - } - }); - }); -} + // U+0000 NULL becomes U+FFFD REPLACEMENT CHARACTER + if ( ch === "\0" ) { + return "\uFFFD"; + } -/** - * Checks a node for validity as a Sizzle context - * @param {Element|Object=} context - * @returns {Element|Object|Boolean} The input node if acceptable, otherwise a falsy value - */ -function testContext( context ) { - return context && typeof context.getElementsByTagName !== "undefined" && context; -} - -// Expose support vars for convenience -support = Sizzle.support = {}; - -/** - * Detects XML nodes - * @param {Element|Object} elem An element or a document - * @returns {Boolean} True iff elem is a non-HTML XML node - */ -isXML = Sizzle.isXML = function( elem ) { - // documentElement is verified for cases where it doesn't yet exist - // (such as loading iframes in IE - #4833) - var documentElement = elem && (elem.ownerDocument || elem).documentElement; - return documentElement ? documentElement.nodeName !== "HTML" : false; -}; - -/** - * Sets document-related variables once based on the current document - * @param {Element|Object} [doc] An element or document object to use to set the document - * @returns {Object} Returns the current document - */ -setDocument = Sizzle.setDocument = function( node ) { - var hasCompare, parent, - doc = node ? node.ownerDocument || node : preferredDoc; - - // If no document and documentElement is available, return - if ( doc === document || doc.nodeType !== 9 || !doc.documentElement ) { - return document; - } - - // Set our document - document = doc; - docElem = doc.documentElement; - parent = doc.defaultView; - - // Support: IE>8 - // If iframe document is assigned to "document" variable and if iframe has been reloaded, - // IE will throw "permission denied" error when accessing "document" variable, see jQuery #13936 - // IE6-8 do not support the defaultView property so parent will be undefined - if ( parent && parent !== parent.top ) { - // IE11 does not have attachEvent, so all must suffer - if ( parent.addEventListener ) { - parent.addEventListener( "unload", unloadHandler, false ); - } else if ( parent.attachEvent ) { - parent.attachEvent( "onunload", unloadHandler ); - } - } + // Control characters and (dependent upon position) numbers get escaped as code points + return ch.slice( 0, -1 ) + "\\" + + ch.charCodeAt( ch.length - 1 ).toString( 16 ) + " "; + } - /* Support tests - ---------------------------------------------------------------------- */ - documentIsHTML = !isXML( doc ); + // Other potentially-special ASCII characters get backslash-escaped + return "\\" + ch; + }, - /* Attributes - ---------------------------------------------------------------------- */ + // Used for iframes + // See setDocument() + // Removing the function wrapper causes a "Permission Denied" + // error in IE + unloadHandler = function() { + setDocument(); + }, - // Support: IE<8 - // Verify that getAttribute really returns attributes and not properties - // (excepting IE8 booleans) - support.attributes = assert(function( div ) { - div.className = "i"; - return !div.getAttribute("className"); - }); + inDisabledFieldset = addCombinator( + function( elem ) { + return elem.disabled === true && elem.nodeName.toLowerCase() === "fieldset"; + }, + { dir: "parentNode", next: "legend" } + ); - /* getElement(s)By* - ---------------------------------------------------------------------- */ +// Optimize for push.apply( _, NodeList ) + try { + push.apply( + ( arr = slice.call( preferredDoc.childNodes ) ), + preferredDoc.childNodes + ); - // Check if getElementsByTagName("*") returns only elements - support.getElementsByTagName = assert(function( div ) { - div.appendChild( doc.createComment("") ); - return !div.getElementsByTagName("*").length; - }); - - // Support: IE<9 - support.getElementsByClassName = rnative.test( doc.getElementsByClassName ); - - // Support: IE<10 - // Check if getElementById returns elements by name - // The broken getElementById methods don't pick up programatically-set names, - // so use a roundabout getElementsByName test - support.getById = assert(function( div ) { - docElem.appendChild( div ).id = expando; - return !doc.getElementsByName || !doc.getElementsByName( expando ).length; - }); - - // ID find and filter - if ( support.getById ) { - Expr.find["ID"] = function( id, context ) { - if ( typeof context.getElementById !== "undefined" && documentIsHTML ) { - var m = context.getElementById( id ); - // Check parentNode to catch when Blackberry 4.6 returns - // nodes that are no longer in the document #6963 - return m && m.parentNode ? [ m ] : []; - } - }; - Expr.filter["ID"] = function( id ) { - var attrId = id.replace( runescape, funescape ); - return function( elem ) { - return elem.getAttribute("id") === attrId; - }; - }; - } else { - // Support: IE6/7 - // getElementById is not reliable as a find shortcut - delete Expr.find["ID"]; - - Expr.filter["ID"] = function( id ) { - var attrId = id.replace( runescape, funescape ); - return function( elem ) { - var node = typeof elem.getAttributeNode !== "undefined" && elem.getAttributeNode("id"); - return node && node.value === attrId; - }; - }; - } + // Support: Android<4.0 + // Detect silently failing push.apply + // eslint-disable-next-line no-unused-expressions + arr[ preferredDoc.childNodes.length ].nodeType; + } catch ( e ) { + push = { apply: arr.length ? - // Tag - Expr.find["TAG"] = support.getElementsByTagName ? - function( tag, context ) { - if ( typeof context.getElementsByTagName !== "undefined" ) { - return context.getElementsByTagName( tag ); + // Leverage slice if possible + function( target, els ) { + pushNative.apply( target, slice.call( els ) ); + } : - // DocumentFragment nodes don't have gEBTN - } else if ( support.qsa ) { - return context.querySelectorAll( tag ); + // Support: IE<9 + // Otherwise append directly + function( target, els ) { + var j = target.length, + i = 0; + + // Can't trust NodeList.length + while ( ( target[ j++ ] = els[ i++ ] ) ) {} + target.length = j - 1; + } + }; } - } : - - function( tag, context ) { - var elem, - tmp = [], - i = 0, - // By happy coincidence, a (broken) gEBTN appears on DocumentFragment nodes too - results = context.getElementsByTagName( tag ); - // Filter out possible comments - if ( tag === "*" ) { - while ( (elem = results[i++]) ) { - if ( elem.nodeType === 1 ) { - tmp.push( elem ); - } - } + function Sizzle( selector, context, results, seed ) { + var m, i, elem, nid, match, groups, newSelector, + newContext = context && context.ownerDocument, - return tmp; - } - return results; - }; + // nodeType defaults to 9, since context defaults to document + nodeType = context ? context.nodeType : 9; - // Class - Expr.find["CLASS"] = support.getElementsByClassName && function( className, context ) { - if ( documentIsHTML ) { - return context.getElementsByClassName( className ); - } - }; + results = results || []; - /* QSA/matchesSelector - ---------------------------------------------------------------------- */ + // Return early from calls with invalid selector or context + if ( typeof selector !== "string" || !selector || + nodeType !== 1 && nodeType !== 9 && nodeType !== 11 ) { - // QSA and matchesSelector support + return results; + } - // matchesSelector(:active) reports false when true (IE9/Opera 11.5) - rbuggyMatches = []; + // Try to shortcut find operations (as opposed to filters) in HTML documents + if ( !seed ) { + setDocument( context ); + context = context || document; + + if ( documentIsHTML ) { + + // If the selector is sufficiently simple, try using a "get*By*" DOM method + // (excepting DocumentFragment context, where the methods don't exist) + if ( nodeType !== 11 && ( match = rquickExpr.exec( selector ) ) ) { + + // ID selector + if ( ( m = match[ 1 ] ) ) { + + // Document context + if ( nodeType === 9 ) { + if ( ( elem = context.getElementById( m ) ) ) { + + // Support: IE, Opera, Webkit + // TODO: identify versions + // getElementById can match elements by name instead of ID + if ( elem.id === m ) { + results.push( elem ); + return results; + } + } else { + return results; + } - // qSa(:focus) reports false when true (Chrome 21) - // We allow this because of a bug in IE8/9 that throws an error - // whenever `document.activeElement` is accessed on an iframe - // So, we allow :focus to pass through QSA all the time to avoid the IE error - // See http://bugs.jquery.com/ticket/13378 - rbuggyQSA = []; + // Element context + } else { - if ( (support.qsa = rnative.test( doc.querySelectorAll )) ) { - // Build QSA regex - // Regex strategy adopted from Diego Perini - assert(function( div ) { - // Select is set to empty string on purpose - // This is to test IE's treatment of not explicitly - // setting a boolean content attribute, - // since its presence should be enough - // http://bugs.jquery.com/ticket/12359 - docElem.appendChild( div ).innerHTML = "" + - ""; + // Support: IE, Opera, Webkit + // TODO: identify versions + // getElementById can match elements by name instead of ID + if ( newContext && ( elem = newContext.getElementById( m ) ) && + contains( context, elem ) && + elem.id === m ) { - // Support: IE8, Opera 11-12.16 - // Nothing should be selected when empty strings follow ^= or $= or *= - // The test attribute must be unknown in Opera but "safe" for WinRT - // http://msdn.microsoft.com/en-us/library/ie/hh465388.aspx#attribute_section - if ( div.querySelectorAll("[msallowcapture^='']").length ) { - rbuggyQSA.push( "[*^$]=" + whitespace + "*(?:''|\"\")" ); - } + results.push( elem ); + return results; + } + } - // Support: IE8 - // Boolean attributes and "value" are not treated correctly - if ( !div.querySelectorAll("[selected]").length ) { - rbuggyQSA.push( "\\[" + whitespace + "*(?:value|" + booleans + ")" ); - } + // Type selector + } else if ( match[ 2 ] ) { + push.apply( results, context.getElementsByTagName( selector ) ); + return results; - // Support: Chrome<29, Android<4.2+, Safari<7.0+, iOS<7.0+, PhantomJS<1.9.7+ - if ( !div.querySelectorAll( "[id~=" + expando + "-]" ).length ) { - rbuggyQSA.push("~="); - } + // Class selector + } else if ( ( m = match[ 3 ] ) && support.getElementsByClassName && + context.getElementsByClassName ) { - // Webkit/Opera - :checked should return selected option elements - // http://www.w3.org/TR/2011/REC-css3-selectors-20110929/#checked - // IE8 throws error here and will not see later tests - if ( !div.querySelectorAll(":checked").length ) { - rbuggyQSA.push(":checked"); - } + push.apply( results, context.getElementsByClassName( m ) ); + return results; + } + } - // Support: Safari 8+, iOS 8+ - // https://bugs.webkit.org/show_bug.cgi?id=136851 - // In-page `selector#id sibing-combinator selector` fails - if ( !div.querySelectorAll( "a#" + expando + "+*" ).length ) { - rbuggyQSA.push(".#.+[+~]"); - } - }); + // Take advantage of querySelectorAll + if ( support.qsa && + !nonnativeSelectorCache[ selector + " " ] && + ( !rbuggyQSA || !rbuggyQSA.test( selector ) ) && + + // Support: IE 8 only + // Exclude object elements + ( nodeType !== 1 || context.nodeName.toLowerCase() !== "object" ) ) { + + newSelector = selector; + newContext = context; + + // qSA considers elements outside a scoping root when evaluating child or + // descendant combinators, which is not what we want. + // In such cases, we work around the behavior by prefixing every selector in the + // list with an ID selector referencing the scope context. + // The technique has to be used as well when a leading combinator is used + // as such selectors are not recognized by querySelectorAll. + // Thanks to Andrew Dupont for this technique. + if ( nodeType === 1 && + ( rdescend.test( selector ) || rcombinators.test( selector ) ) ) { + + // Expand context for sibling selectors + newContext = rsibling.test( selector ) && testContext( context.parentNode ) || + context; + + // We can use :scope instead of the ID hack if the browser + // supports it & if we're not changing the context. + if ( newContext !== context || !support.scope ) { + + // Capture the context ID, setting it first if necessary + if ( ( nid = context.getAttribute( "id" ) ) ) { + nid = nid.replace( rcssescape, fcssescape ); + } else { + context.setAttribute( "id", ( nid = expando ) ); + } + } - assert(function( div ) { - // Support: Windows 8 Native Apps - // The type and name attributes are restricted during .innerHTML assignment - var input = doc.createElement("input"); - input.setAttribute( "type", "hidden" ); - div.appendChild( input ).setAttribute( "name", "D" ); + // Prefix every selector in the list + groups = tokenize( selector ); + i = groups.length; + while ( i-- ) { + groups[ i ] = ( nid ? "#" + nid : ":scope" ) + " " + + toSelector( groups[ i ] ); + } + newSelector = groups.join( "," ); + } - // Support: IE8 - // Enforce case-sensitivity of name attribute - if ( div.querySelectorAll("[name=d]").length ) { - rbuggyQSA.push( "name" + whitespace + "*[*^$|!~]?=" ); - } + try { + push.apply( results, + newContext.querySelectorAll( newSelector ) + ); + return results; + } catch ( qsaError ) { + nonnativeSelectorCache( selector, true ); + } finally { + if ( nid === expando ) { + context.removeAttribute( "id" ); + } + } + } + } + } - // FF 3.5 - :enabled/:disabled and hidden elements (hidden elements are still enabled) - // IE8 throws error here and will not see later tests - if ( !div.querySelectorAll(":enabled").length ) { - rbuggyQSA.push( ":enabled", ":disabled" ); + // All others + return select( selector.replace( rtrim, "$1" ), context, results, seed ); } - // Opera 10-11 does not throw on post-comma invalid pseudos - div.querySelectorAll("*,:x"); - rbuggyQSA.push(",.*:"); - }); - } + /** + * Create key-value caches of limited size + * @returns {function(string, object)} Returns the Object data after storing it on itself with + * property name the (space-suffixed) string and (if the cache is larger than Expr.cacheLength) + * deleting the oldest entry + */ + function createCache() { + var keys = []; - if ( (support.matchesSelector = rnative.test( (matches = docElem.matches || - docElem.webkitMatchesSelector || - docElem.mozMatchesSelector || - docElem.oMatchesSelector || - docElem.msMatchesSelector) )) ) { - - assert(function( div ) { - // Check to see if it's possible to do matchesSelector - // on a disconnected node (IE 9) - support.disconnectedMatch = matches.call( div, "div" ); - - // This should fail with an exception - // Gecko does not error, returns false instead - matches.call( div, "[s!='']:x" ); - rbuggyMatches.push( "!=", pseudos ); - }); - } + function cache( key, value ) { - rbuggyQSA = rbuggyQSA.length && new RegExp( rbuggyQSA.join("|") ); - rbuggyMatches = rbuggyMatches.length && new RegExp( rbuggyMatches.join("|") ); + // Use (key + " ") to avoid collision with native prototype properties (see Issue #157) + if ( keys.push( key + " " ) > Expr.cacheLength ) { - /* Contains - ---------------------------------------------------------------------- */ - hasCompare = rnative.test( docElem.compareDocumentPosition ); - - // Element contains another - // Purposefully does not implement inclusive descendent - // As in, an element does not contain itself - contains = hasCompare || rnative.test( docElem.contains ) ? - function( a, b ) { - var adown = a.nodeType === 9 ? a.documentElement : a, - bup = b && b.parentNode; - return a === bup || !!( bup && bup.nodeType === 1 && ( - adown.contains ? - adown.contains( bup ) : - a.compareDocumentPosition && a.compareDocumentPosition( bup ) & 16 - )); - } : - function( a, b ) { - if ( b ) { - while ( (b = b.parentNode) ) { - if ( b === a ) { - return true; + // Only keep the most recent entries + delete cache[ keys.shift() ]; } + return ( cache[ key + " " ] = value ); } + return cache; } - return false; - }; - - /* Sorting - ---------------------------------------------------------------------- */ - - // Document order sorting - sortOrder = hasCompare ? - function( a, b ) { - - // Flag for duplicate removal - if ( a === b ) { - hasDuplicate = true; - return 0; - } - - // Sort on method existence if only one input has compareDocumentPosition - var compare = !a.compareDocumentPosition - !b.compareDocumentPosition; - if ( compare ) { - return compare; - } - // Calculate position if both inputs belong to the same document - compare = ( a.ownerDocument || a ) === ( b.ownerDocument || b ) ? - a.compareDocumentPosition( b ) : - - // Otherwise we know they are disconnected - 1; - - // Disconnected nodes - if ( compare & 1 || - (!support.sortDetached && b.compareDocumentPosition( a ) === compare) ) { - - // Choose the first element that is related to our preferred document - if ( a === doc || a.ownerDocument === preferredDoc && contains(preferredDoc, a) ) { - return -1; - } - if ( b === doc || b.ownerDocument === preferredDoc && contains(preferredDoc, b) ) { - return 1; + /** + * Mark a function for special use by Sizzle + * @param {Function} fn The function to mark + */ + function markFunction( fn ) { + fn[ expando ] = true; + return fn; } - // Maintain original order - return sortInput ? - ( indexOf( sortInput, a ) - indexOf( sortInput, b ) ) : - 0; - } - - return compare & 4 ? -1 : 1; - } : - function( a, b ) { - // Exit early if the nodes are identical - if ( a === b ) { - hasDuplicate = true; - return 0; - } - - var cur, - i = 0, - aup = a.parentNode, - bup = b.parentNode, - ap = [ a ], - bp = [ b ]; - - // Parentless nodes are either documents or disconnected - if ( !aup || !bup ) { - return a === doc ? -1 : - b === doc ? 1 : - aup ? -1 : - bup ? 1 : - sortInput ? - ( indexOf( sortInput, a ) - indexOf( sortInput, b ) ) : - 0; - - // If the nodes are siblings, we can do a quick check - } else if ( aup === bup ) { - return siblingCheck( a, b ); - } - - // Otherwise we need full lists of their ancestors for comparison - cur = a; - while ( (cur = cur.parentNode) ) { - ap.unshift( cur ); - } - cur = b; - while ( (cur = cur.parentNode) ) { - bp.unshift( cur ); - } - - // Walk down the tree looking for a discrepancy - while ( ap[i] === bp[i] ) { - i++; - } - - return i ? - // Do a sibling check if the nodes have a common ancestor - siblingCheck( ap[i], bp[i] ) : + /** + * Support testing using an element + * @param {Function} fn Passed the created element and returns a boolean result + */ + function assert( fn ) { + var el = document.createElement( "fieldset" ); - // Otherwise nodes in our document sort first - ap[i] === preferredDoc ? -1 : - bp[i] === preferredDoc ? 1 : - 0; - }; + try { + return !!fn( el ); + } catch ( e ) { + return false; + } finally { - return doc; -}; + // Remove from its parent by default + if ( el.parentNode ) { + el.parentNode.removeChild( el ); + } -Sizzle.matches = function( expr, elements ) { - return Sizzle( expr, null, null, elements ); -}; + // release memory in IE + el = null; + } + } -Sizzle.matchesSelector = function( elem, expr ) { - // Set document vars if needed - if ( ( elem.ownerDocument || elem ) !== document ) { - setDocument( elem ); - } + /** + * Adds the same handler for all of the specified attrs + * @param {String} attrs Pipe-separated list of attributes + * @param {Function} handler The method that will be applied + */ + function addHandle( attrs, handler ) { + var arr = attrs.split( "|" ), + i = arr.length; - // Make sure that attribute selectors are quoted - expr = expr.replace( rattributeQuotes, "='$1']" ); + while ( i-- ) { + Expr.attrHandle[ arr[ i ] ] = handler; + } + } - if ( support.matchesSelector && documentIsHTML && - ( !rbuggyMatches || !rbuggyMatches.test( expr ) ) && - ( !rbuggyQSA || !rbuggyQSA.test( expr ) ) ) { + /** + * Checks document order of two siblings + * @param {Element} a + * @param {Element} b + * @returns {Number} Returns less than 0 if a precedes b, greater than 0 if a follows b + */ + function siblingCheck( a, b ) { + var cur = b && a, + diff = cur && a.nodeType === 1 && b.nodeType === 1 && + a.sourceIndex - b.sourceIndex; + + // Use IE sourceIndex if available on both nodes + if ( diff ) { + return diff; + } - try { - var ret = matches.call( elem, expr ); + // Check if b follows a + if ( cur ) { + while ( ( cur = cur.nextSibling ) ) { + if ( cur === b ) { + return -1; + } + } + } - // IE 9's matchesSelector returns false on disconnected nodes - if ( ret || support.disconnectedMatch || - // As well, disconnected nodes are said to be in a document - // fragment in IE 9 - elem.document && elem.document.nodeType !== 11 ) { - return ret; + return a ? 1 : -1; } - } catch (e) {} - } - return Sizzle( expr, document, null, [ elem ] ).length > 0; -}; + /** + * Returns a function to use in pseudos for input types + * @param {String} type + */ + function createInputPseudo( type ) { + return function( elem ) { + var name = elem.nodeName.toLowerCase(); + return name === "input" && elem.type === type; + }; + } -Sizzle.contains = function( context, elem ) { - // Set document vars if needed - if ( ( context.ownerDocument || context ) !== document ) { - setDocument( context ); - } - return contains( context, elem ); -}; + /** + * Returns a function to use in pseudos for buttons + * @param {String} type + */ + function createButtonPseudo( type ) { + return function( elem ) { + var name = elem.nodeName.toLowerCase(); + return ( name === "input" || name === "button" ) && elem.type === type; + }; + } -Sizzle.attr = function( elem, name ) { - // Set document vars if needed - if ( ( elem.ownerDocument || elem ) !== document ) { - setDocument( elem ); - } + /** + * Returns a function to use in pseudos for :enabled/:disabled + * @param {Boolean} disabled true for :disabled; false for :enabled + */ + function createDisabledPseudo( disabled ) { + + // Known :disabled false positives: fieldset[disabled] > legend:nth-of-type(n+2) :can-disable + return function( elem ) { + + // Only certain elements can match :enabled or :disabled + // https://html.spec.whatwg.org/multipage/scripting.html#selector-enabled + // https://html.spec.whatwg.org/multipage/scripting.html#selector-disabled + if ( "form" in elem ) { + + // Check for inherited disabledness on relevant non-disabled elements: + // * listed form-associated elements in a disabled fieldset + // https://html.spec.whatwg.org/multipage/forms.html#category-listed + // https://html.spec.whatwg.org/multipage/forms.html#concept-fe-disabled + // * option elements in a disabled optgroup + // https://html.spec.whatwg.org/multipage/forms.html#concept-option-disabled + // All such elements have a "form" property. + if ( elem.parentNode && elem.disabled === false ) { + + // Option elements defer to a parent optgroup if present + if ( "label" in elem ) { + if ( "label" in elem.parentNode ) { + return elem.parentNode.disabled === disabled; + } else { + return elem.disabled === disabled; + } + } - var fn = Expr.attrHandle[ name.toLowerCase() ], - // Don't get fooled by Object.prototype properties (jQuery #13807) - val = fn && hasOwn.call( Expr.attrHandle, name.toLowerCase() ) ? - fn( elem, name, !documentIsHTML ) : - undefined; - - return val !== undefined ? - val : - support.attributes || !documentIsHTML ? - elem.getAttribute( name ) : - (val = elem.getAttributeNode(name)) && val.specified ? - val.value : - null; -}; + // Support: IE 6 - 11 + // Use the isDisabled shortcut property to check for disabled fieldset ancestors + return elem.isDisabled === disabled || -Sizzle.error = function( msg ) { - throw new Error( "Syntax error, unrecognized expression: " + msg ); -}; + // Where there is no isDisabled, check manually + /* jshint -W018 */ + elem.isDisabled !== !disabled && + inDisabledFieldset( elem ) === disabled; + } -/** - * Document sorting and removing duplicates - * @param {ArrayLike} results - */ -Sizzle.uniqueSort = function( results ) { - var elem, - duplicates = [], - j = 0, - i = 0; + return elem.disabled === disabled; - // Unless we *know* we can detect duplicates, assume their presence - hasDuplicate = !support.detectDuplicates; - sortInput = !support.sortStable && results.slice( 0 ); - results.sort( sortOrder ); + // Try to winnow out elements that can't be disabled before trusting the disabled property. + // Some victims get caught in our net (label, legend, menu, track), but it shouldn't + // even exist on them, let alone have a boolean value. + } else if ( "label" in elem ) { + return elem.disabled === disabled; + } - if ( hasDuplicate ) { - while ( (elem = results[i++]) ) { - if ( elem === results[ i ] ) { - j = duplicates.push( i ); + // Remaining elements are neither :enabled nor :disabled + return false; + }; } - } - while ( j-- ) { - results.splice( duplicates[ j ], 1 ); - } - } - // Clear input after sorting to release objects - // See https://github.com/jquery/sizzle/pull/225 - sortInput = null; + /** + * Returns a function to use in pseudos for positionals + * @param {Function} fn + */ + function createPositionalPseudo( fn ) { + return markFunction( function( argument ) { + argument = +argument; + return markFunction( function( seed, matches ) { + var j, + matchIndexes = fn( [], seed.length, argument ), + i = matchIndexes.length; - return results; -}; + // Match elements found at the specified indexes + while ( i-- ) { + if ( seed[ ( j = matchIndexes[ i ] ) ] ) { + seed[ j ] = !( matches[ j ] = seed[ j ] ); + } + } + } ); + } ); + } -/** - * Utility function for retrieving the text value of an array of DOM nodes - * @param {Array|Element} elem - */ -getText = Sizzle.getText = function( elem ) { - var node, - ret = "", - i = 0, - nodeType = elem.nodeType; - - if ( !nodeType ) { - // If no nodeType, this is expected to be an array - while ( (node = elem[i++]) ) { - // Do not traverse comment nodes - ret += getText( node ); - } - } else if ( nodeType === 1 || nodeType === 9 || nodeType === 11 ) { - // Use textContent for elements - // innerText usage removed for consistency of new lines (jQuery #11153) - if ( typeof elem.textContent === "string" ) { - return elem.textContent; - } else { - // Traverse its children - for ( elem = elem.firstChild; elem; elem = elem.nextSibling ) { - ret += getText( elem ); + /** + * Checks a node for validity as a Sizzle context + * @param {Element|Object=} context + * @returns {Element|Object|Boolean} The input node if acceptable, otherwise a falsy value + */ + function testContext( context ) { + return context && typeof context.getElementsByTagName !== "undefined" && context; } - } - } else if ( nodeType === 3 || nodeType === 4 ) { - return elem.nodeValue; - } - // Do not include comment or processing instruction nodes - return ret; -}; +// Expose support vars for convenience + support = Sizzle.support = {}; + + /** + * Detects XML nodes + * @param {Element|Object} elem An element or a document + * @returns {Boolean} True iff elem is a non-HTML XML node + */ + isXML = Sizzle.isXML = function( elem ) { + var namespace = elem && elem.namespaceURI, + docElem = elem && ( elem.ownerDocument || elem ).documentElement; + + // Support: IE <=8 + // Assume HTML when documentElement doesn't yet exist, such as inside loading iframes + // https://bugs.jquery.com/ticket/4833 + return !rhtml.test( namespace || docElem && docElem.nodeName || "HTML" ); + }; -Expr = Sizzle.selectors = { + /** + * Sets document-related variables once based on the current document + * @param {Element|Object} [doc] An element or document object to use to set the document + * @returns {Object} Returns the current document + */ + setDocument = Sizzle.setDocument = function( node ) { + var hasCompare, subWindow, + doc = node ? node.ownerDocument || node : preferredDoc; + + // Return early if doc is invalid or already selected + // Support: IE 11+, Edge 17 - 18+ + // IE/Edge sometimes throw a "Permission denied" error when strict-comparing + // two documents; shallow comparisons work. + // eslint-disable-next-line eqeqeq + if ( doc == document || doc.nodeType !== 9 || !doc.documentElement ) { + return document; + } - // Can be adjusted by the user - cacheLength: 50, + // Update global variables + document = doc; + docElem = document.documentElement; + documentIsHTML = !isXML( document ); + + // Support: IE 9 - 11+, Edge 12 - 18+ + // Accessing iframe documents after unload throws "permission denied" errors (jQuery #13936) + // Support: IE 11+, Edge 17 - 18+ + // IE/Edge sometimes throw a "Permission denied" error when strict-comparing + // two documents; shallow comparisons work. + // eslint-disable-next-line eqeqeq + if ( preferredDoc != document && + ( subWindow = document.defaultView ) && subWindow.top !== subWindow ) { + + // Support: IE 11, Edge + if ( subWindow.addEventListener ) { + subWindow.addEventListener( "unload", unloadHandler, false ); + + // Support: IE 9 - 10 only + } else if ( subWindow.attachEvent ) { + subWindow.attachEvent( "onunload", unloadHandler ); + } + } - createPseudo: markFunction, + // Support: IE 8 - 11+, Edge 12 - 18+, Chrome <=16 - 25 only, Firefox <=3.6 - 31 only, + // Safari 4 - 5 only, Opera <=11.6 - 12.x only + // IE/Edge & older browsers don't support the :scope pseudo-class. + // Support: Safari 6.0 only + // Safari 6.0 supports :scope but it's an alias of :root there. + support.scope = assert( function( el ) { + docElem.appendChild( el ).appendChild( document.createElement( "div" ) ); + return typeof el.querySelectorAll !== "undefined" && + !el.querySelectorAll( ":scope fieldset div" ).length; + } ); + + /* Attributes + ---------------------------------------------------------------------- */ - match: matchExpr, + // Support: IE<8 + // Verify that getAttribute really returns attributes and not properties + // (excepting IE8 booleans) + support.attributes = assert( function( el ) { + el.className = "i"; + return !el.getAttribute( "className" ); + } ); + + /* getElement(s)By* + ---------------------------------------------------------------------- */ - attrHandle: {}, + // Check if getElementsByTagName("*") returns only elements + support.getElementsByTagName = assert( function( el ) { + el.appendChild( document.createComment( "" ) ); + return !el.getElementsByTagName( "*" ).length; + } ); + + // Support: IE<9 + support.getElementsByClassName = rnative.test( document.getElementsByClassName ); + + // Support: IE<10 + // Check if getElementById returns elements by name + // The broken getElementById methods don't pick up programmatically-set names, + // so use a roundabout getElementsByName test + support.getById = assert( function( el ) { + docElem.appendChild( el ).id = expando; + return !document.getElementsByName || !document.getElementsByName( expando ).length; + } ); + + // ID filter and find + if ( support.getById ) { + Expr.filter[ "ID" ] = function( id ) { + var attrId = id.replace( runescape, funescape ); + return function( elem ) { + return elem.getAttribute( "id" ) === attrId; + }; + }; + Expr.find[ "ID" ] = function( id, context ) { + if ( typeof context.getElementById !== "undefined" && documentIsHTML ) { + var elem = context.getElementById( id ); + return elem ? [ elem ] : []; + } + }; + } else { + Expr.filter[ "ID" ] = function( id ) { + var attrId = id.replace( runescape, funescape ); + return function( elem ) { + var node = typeof elem.getAttributeNode !== "undefined" && + elem.getAttributeNode( "id" ); + return node && node.value === attrId; + }; + }; - find: {}, + // Support: IE 6 - 7 only + // getElementById is not reliable as a find shortcut + Expr.find[ "ID" ] = function( id, context ) { + if ( typeof context.getElementById !== "undefined" && documentIsHTML ) { + var node, i, elems, + elem = context.getElementById( id ); - relative: { - ">": { dir: "parentNode", first: true }, - " ": { dir: "parentNode" }, - "+": { dir: "previousSibling", first: true }, - "~": { dir: "previousSibling" } - }, + if ( elem ) { - preFilter: { - "ATTR": function( match ) { - match[1] = match[1].replace( runescape, funescape ); + // Verify the id attribute + node = elem.getAttributeNode( "id" ); + if ( node && node.value === id ) { + return [ elem ]; + } - // Move the given value to match[3] whether quoted or unquoted - match[3] = ( match[3] || match[4] || match[5] || "" ).replace( runescape, funescape ); + // Fall back on getElementsByName + elems = context.getElementsByName( id ); + i = 0; + while ( ( elem = elems[ i++ ] ) ) { + node = elem.getAttributeNode( "id" ); + if ( node && node.value === id ) { + return [ elem ]; + } + } + } - if ( match[2] === "~=" ) { - match[3] = " " + match[3] + " "; - } + return []; + } + }; + } - return match.slice( 0, 4 ); - }, + // Tag + Expr.find[ "TAG" ] = support.getElementsByTagName ? + function( tag, context ) { + if ( typeof context.getElementsByTagName !== "undefined" ) { + return context.getElementsByTagName( tag ); - "CHILD": function( match ) { - /* matches from matchExpr["CHILD"] - 1 type (only|nth|...) - 2 what (child|of-type) - 3 argument (even|odd|\d*|\d*n([+-]\d+)?|...) - 4 xn-component of xn+y argument ([+-]?\d*n|) - 5 sign of xn-component - 6 x of xn-component - 7 sign of y-component - 8 y of y-component - */ - match[1] = match[1].toLowerCase(); + // DocumentFragment nodes don't have gEBTN + } else if ( support.qsa ) { + return context.querySelectorAll( tag ); + } + } : - if ( match[1].slice( 0, 3 ) === "nth" ) { - // nth-* requires argument - if ( !match[3] ) { - Sizzle.error( match[0] ); - } + function( tag, context ) { + var elem, + tmp = [], + i = 0, - // numeric x and y parameters for Expr.filter.CHILD - // remember that false/true cast respectively to 0/1 - match[4] = +( match[4] ? match[5] + (match[6] || 1) : 2 * ( match[3] === "even" || match[3] === "odd" ) ); - match[5] = +( ( match[7] + match[8] ) || match[3] === "odd" ); + // By happy coincidence, a (broken) gEBTN appears on DocumentFragment nodes too + results = context.getElementsByTagName( tag ); - // other types prohibit arguments - } else if ( match[3] ) { - Sizzle.error( match[0] ); - } + // Filter out possible comments + if ( tag === "*" ) { + while ( ( elem = results[ i++ ] ) ) { + if ( elem.nodeType === 1 ) { + tmp.push( elem ); + } + } - return match; - }, + return tmp; + } + return results; + }; - "PSEUDO": function( match ) { - var excess, - unquoted = !match[6] && match[2]; + // Class + Expr.find[ "CLASS" ] = support.getElementsByClassName && function( className, context ) { + if ( typeof context.getElementsByClassName !== "undefined" && documentIsHTML ) { + return context.getElementsByClassName( className ); + } + }; - if ( matchExpr["CHILD"].test( match[0] ) ) { - return null; - } + /* QSA/matchesSelector + ---------------------------------------------------------------------- */ - // Accept quoted arguments as-is - if ( match[3] ) { - match[2] = match[4] || match[5] || ""; + // QSA and matchesSelector support + + // matchesSelector(:active) reports false when true (IE9/Opera 11.5) + rbuggyMatches = []; + + // qSa(:focus) reports false when true (Chrome 21) + // We allow this because of a bug in IE8/9 that throws an error + // whenever `document.activeElement` is accessed on an iframe + // So, we allow :focus to pass through QSA all the time to avoid the IE error + // See https://bugs.jquery.com/ticket/13378 + rbuggyQSA = []; + + if ( ( support.qsa = rnative.test( document.querySelectorAll ) ) ) { + + // Build QSA regex + // Regex strategy adopted from Diego Perini + assert( function( el ) { + + var input; + + // Select is set to empty string on purpose + // This is to test IE's treatment of not explicitly + // setting a boolean content attribute, + // since its presence should be enough + // https://bugs.jquery.com/ticket/12359 + docElem.appendChild( el ).innerHTML = "" + + ""; + + // Support: IE8, Opera 11-12.16 + // Nothing should be selected when empty strings follow ^= or $= or *= + // The test attribute must be unknown in Opera but "safe" for WinRT + // https://msdn.microsoft.com/en-us/library/ie/hh465388.aspx#attribute_section + if ( el.querySelectorAll( "[msallowcapture^='']" ).length ) { + rbuggyQSA.push( "[*^$]=" + whitespace + "*(?:''|\"\")" ); + } - // Strip excess characters from unquoted arguments - } else if ( unquoted && rpseudo.test( unquoted ) && - // Get excess from tokenize (recursively) - (excess = tokenize( unquoted, true )) && - // advance to the next closing parenthesis - (excess = unquoted.indexOf( ")", unquoted.length - excess ) - unquoted.length) ) { + // Support: IE8 + // Boolean attributes and "value" are not treated correctly + if ( !el.querySelectorAll( "[selected]" ).length ) { + rbuggyQSA.push( "\\[" + whitespace + "*(?:value|" + booleans + ")" ); + } - // excess is a negative index - match[0] = match[0].slice( 0, excess ); - match[2] = unquoted.slice( 0, excess ); - } + // Support: Chrome<29, Android<4.4, Safari<7.0+, iOS<7.0+, PhantomJS<1.9.8+ + if ( !el.querySelectorAll( "[id~=" + expando + "-]" ).length ) { + rbuggyQSA.push( "~=" ); + } - // Return only captures needed by the pseudo filter method (type and argument) - return match.slice( 0, 3 ); - } - }, + // Support: IE 11+, Edge 15 - 18+ + // IE 11/Edge don't find elements on a `[name='']` query in some cases. + // Adding a temporary attribute to the document before the selection works + // around the issue. + // Interestingly, IE 10 & older don't seem to have the issue. + input = document.createElement( "input" ); + input.setAttribute( "name", "" ); + el.appendChild( input ); + if ( !el.querySelectorAll( "[name='']" ).length ) { + rbuggyQSA.push( "\\[" + whitespace + "*name" + whitespace + "*=" + + whitespace + "*(?:''|\"\")" ); + } - filter: { + // Webkit/Opera - :checked should return selected option elements + // http://www.w3.org/TR/2011/REC-css3-selectors-20110929/#checked + // IE8 throws error here and will not see later tests + if ( !el.querySelectorAll( ":checked" ).length ) { + rbuggyQSA.push( ":checked" ); + } - "TAG": function( nodeNameSelector ) { - var nodeName = nodeNameSelector.replace( runescape, funescape ).toLowerCase(); - return nodeNameSelector === "*" ? - function() { return true; } : - function( elem ) { - return elem.nodeName && elem.nodeName.toLowerCase() === nodeName; - }; - }, + // Support: Safari 8+, iOS 8+ + // https://bugs.webkit.org/show_bug.cgi?id=136851 + // In-page `selector#id sibling-combinator selector` fails + if ( !el.querySelectorAll( "a#" + expando + "+*" ).length ) { + rbuggyQSA.push( ".#.+[+~]" ); + } - "CLASS": function( className ) { - var pattern = classCache[ className + " " ]; + // Support: Firefox <=3.6 - 5 only + // Old Firefox doesn't throw on a badly-escaped identifier. + el.querySelectorAll( "\\\f" ); + rbuggyQSA.push( "[\\r\\n\\f]" ); + } ); + + assert( function( el ) { + el.innerHTML = "" + + ""; + + // Support: Windows 8 Native Apps + // The type and name attributes are restricted during .innerHTML assignment + var input = document.createElement( "input" ); + input.setAttribute( "type", "hidden" ); + el.appendChild( input ).setAttribute( "name", "D" ); + + // Support: IE8 + // Enforce case-sensitivity of name attribute + if ( el.querySelectorAll( "[name=d]" ).length ) { + rbuggyQSA.push( "name" + whitespace + "*[*^$|!~]?=" ); + } - return pattern || - (pattern = new RegExp( "(^|" + whitespace + ")" + className + "(" + whitespace + "|$)" )) && - classCache( className, function( elem ) { - return pattern.test( typeof elem.className === "string" && elem.className || typeof elem.getAttribute !== "undefined" && elem.getAttribute("class") || "" ); - }); - }, + // FF 3.5 - :enabled/:disabled and hidden elements (hidden elements are still enabled) + // IE8 throws error here and will not see later tests + if ( el.querySelectorAll( ":enabled" ).length !== 2 ) { + rbuggyQSA.push( ":enabled", ":disabled" ); + } - "ATTR": function( name, operator, check ) { - return function( elem ) { - var result = Sizzle.attr( elem, name ); + // Support: IE9-11+ + // IE's :disabled selector does not pick up the children of disabled fieldsets + docElem.appendChild( el ).disabled = true; + if ( el.querySelectorAll( ":disabled" ).length !== 2 ) { + rbuggyQSA.push( ":enabled", ":disabled" ); + } - if ( result == null ) { - return operator === "!="; - } - if ( !operator ) { - return true; + // Support: Opera 10 - 11 only + // Opera 10-11 does not throw on post-comma invalid pseudos + el.querySelectorAll( "*,:x" ); + rbuggyQSA.push( ",.*:" ); + } ); } - result += ""; + if ( ( support.matchesSelector = rnative.test( ( matches = docElem.matches || + docElem.webkitMatchesSelector || + docElem.mozMatchesSelector || + docElem.oMatchesSelector || + docElem.msMatchesSelector ) ) ) ) { - return operator === "=" ? result === check : - operator === "!=" ? result !== check : - operator === "^=" ? check && result.indexOf( check ) === 0 : - operator === "*=" ? check && result.indexOf( check ) > -1 : - operator === "$=" ? check && result.slice( -check.length ) === check : - operator === "~=" ? ( " " + result.replace( rwhitespace, " " ) + " " ).indexOf( check ) > -1 : - operator === "|=" ? result === check || result.slice( 0, check.length + 1 ) === check + "-" : - false; - }; - }, - - "CHILD": function( type, what, argument, first, last ) { - var simple = type.slice( 0, 3 ) !== "nth", - forward = type.slice( -4 ) !== "last", - ofType = what === "of-type"; - - return first === 1 && last === 0 ? + assert( function( el ) { - // Shortcut for :nth-*(n) - function( elem ) { - return !!elem.parentNode; - } : + // Check to see if it's possible to do matchesSelector + // on a disconnected node (IE 9) + support.disconnectedMatch = matches.call( el, "*" ); - function( elem, context, xml ) { - var cache, outerCache, node, diff, nodeIndex, start, - dir = simple !== forward ? "nextSibling" : "previousSibling", - parent = elem.parentNode, - name = ofType && elem.nodeName.toLowerCase(), - useCache = !xml && !ofType; + // This should fail with an exception + // Gecko does not error, returns false instead + matches.call( el, "[s!='']:x" ); + rbuggyMatches.push( "!=", pseudos ); + } ); + } - if ( parent ) { + rbuggyQSA = rbuggyQSA.length && new RegExp( rbuggyQSA.join( "|" ) ); + rbuggyMatches = rbuggyMatches.length && new RegExp( rbuggyMatches.join( "|" ) ); - // :(first|last|only)-(child|of-type) - if ( simple ) { - while ( dir ) { - node = elem; - while ( (node = node[ dir ]) ) { - if ( ofType ? node.nodeName.toLowerCase() === name : node.nodeType === 1 ) { - return false; - } + /* Contains + ---------------------------------------------------------------------- */ + hasCompare = rnative.test( docElem.compareDocumentPosition ); + + // Element contains another + // Purposefully self-exclusive + // As in, an element does not contain itself + contains = hasCompare || rnative.test( docElem.contains ) ? + function( a, b ) { + var adown = a.nodeType === 9 ? a.documentElement : a, + bup = b && b.parentNode; + return a === bup || !!( bup && bup.nodeType === 1 && ( + adown.contains ? + adown.contains( bup ) : + a.compareDocumentPosition && a.compareDocumentPosition( bup ) & 16 + ) ); + } : + function( a, b ) { + if ( b ) { + while ( ( b = b.parentNode ) ) { + if ( b === a ) { + return true; } - // Reverse direction for :only-* (if we haven't yet done so) - start = dir = type === "only" && !start && "nextSibling"; } - return true; } + return false; + }; - start = [ forward ? parent.firstChild : parent.lastChild ]; + /* Sorting + ---------------------------------------------------------------------- */ - // non-xml :nth-child(...) stores cache data on `parent` - if ( forward && useCache ) { - // Seek `elem` from a previously-cached index - outerCache = parent[ expando ] || (parent[ expando ] = {}); - cache = outerCache[ type ] || []; - nodeIndex = cache[0] === dirruns && cache[1]; - diff = cache[0] === dirruns && cache[2]; - node = nodeIndex && parent.childNodes[ nodeIndex ]; + // Document order sorting + sortOrder = hasCompare ? + function( a, b ) { - while ( (node = ++nodeIndex && node && node[ dir ] || + // Flag for duplicate removal + if ( a === b ) { + hasDuplicate = true; + return 0; + } - // Fallback to seeking `elem` from the start - (diff = nodeIndex = 0) || start.pop()) ) { + // Sort on method existence if only one input has compareDocumentPosition + var compare = !a.compareDocumentPosition - !b.compareDocumentPosition; + if ( compare ) { + return compare; + } - // When found, cache indexes on `parent` and break - if ( node.nodeType === 1 && ++diff && node === elem ) { - outerCache[ type ] = [ dirruns, nodeIndex, diff ]; - break; - } + // Calculate position if both inputs belong to the same document + // Support: IE 11+, Edge 17 - 18+ + // IE/Edge sometimes throw a "Permission denied" error when strict-comparing + // two documents; shallow comparisons work. + // eslint-disable-next-line eqeqeq + compare = ( a.ownerDocument || a ) == ( b.ownerDocument || b ) ? + a.compareDocumentPosition( b ) : + + // Otherwise we know they are disconnected + 1; + + // Disconnected nodes + if ( compare & 1 || + ( !support.sortDetached && b.compareDocumentPosition( a ) === compare ) ) { + + // Choose the first element that is related to our preferred document + // Support: IE 11+, Edge 17 - 18+ + // IE/Edge sometimes throw a "Permission denied" error when strict-comparing + // two documents; shallow comparisons work. + // eslint-disable-next-line eqeqeq + if ( a == document || a.ownerDocument == preferredDoc && + contains( preferredDoc, a ) ) { + return -1; } - // Use previously-cached element index if available - } else if ( useCache && (cache = (elem[ expando ] || (elem[ expando ] = {}))[ type ]) && cache[0] === dirruns ) { - diff = cache[1]; + // Support: IE 11+, Edge 17 - 18+ + // IE/Edge sometimes throw a "Permission denied" error when strict-comparing + // two documents; shallow comparisons work. + // eslint-disable-next-line eqeqeq + if ( b == document || b.ownerDocument == preferredDoc && + contains( preferredDoc, b ) ) { + return 1; + } - // xml :nth-child(...) or :nth-last-child(...) or :nth(-last)?-of-type(...) - } else { - // Use the same loop as above to seek `elem` from the start - while ( (node = ++nodeIndex && node && node[ dir ] || - (diff = nodeIndex = 0) || start.pop()) ) { - - if ( ( ofType ? node.nodeName.toLowerCase() === name : node.nodeType === 1 ) && ++diff ) { - // Cache the index of each encountered element - if ( useCache ) { - (node[ expando ] || (node[ expando ] = {}))[ type ] = [ dirruns, diff ]; - } + // Maintain original order + return sortInput ? + ( indexOf( sortInput, a ) - indexOf( sortInput, b ) ) : + 0; + } - if ( node === elem ) { - break; - } - } - } + return compare & 4 ? -1 : 1; + } : + function( a, b ) { + + // Exit early if the nodes are identical + if ( a === b ) { + hasDuplicate = true; + return 0; } - // Incorporate the offset, then check against cycle size - diff -= last; - return diff === first || ( diff % first === 0 && diff / first >= 0 ); - } - }; - }, + var cur, + i = 0, + aup = a.parentNode, + bup = b.parentNode, + ap = [ a ], + bp = [ b ]; + + // Parentless nodes are either documents or disconnected + if ( !aup || !bup ) { + + // Support: IE 11+, Edge 17 - 18+ + // IE/Edge sometimes throw a "Permission denied" error when strict-comparing + // two documents; shallow comparisons work. + /* eslint-disable eqeqeq */ + return a == document ? -1 : + b == document ? 1 : + /* eslint-enable eqeqeq */ + aup ? -1 : + bup ? 1 : + sortInput ? + ( indexOf( sortInput, a ) - indexOf( sortInput, b ) ) : + 0; + + // If the nodes are siblings, we can do a quick check + } else if ( aup === bup ) { + return siblingCheck( a, b ); + } - "PSEUDO": function( pseudo, argument ) { - // pseudo-class names are case-insensitive - // http://www.w3.org/TR/selectors/#pseudo-classes - // Prioritize by case sensitivity in case custom pseudos are added with uppercase letters - // Remember that setFilters inherits from pseudos - var args, - fn = Expr.pseudos[ pseudo ] || Expr.setFilters[ pseudo.toLowerCase() ] || - Sizzle.error( "unsupported pseudo: " + pseudo ); - - // The user may use createPseudo to indicate that - // arguments are needed to create the filter function - // just as Sizzle does - if ( fn[ expando ] ) { - return fn( argument ); - } - - // But maintain support for old signatures - if ( fn.length > 1 ) { - args = [ pseudo, pseudo, "", argument ]; - return Expr.setFilters.hasOwnProperty( pseudo.toLowerCase() ) ? - markFunction(function( seed, matches ) { - var idx, - matched = fn( seed, argument ), - i = matched.length; - while ( i-- ) { - idx = indexOf( seed, matched[i] ); - seed[ idx ] = !( matches[ idx ] = matched[i] ); + // Otherwise we need full lists of their ancestors for comparison + cur = a; + while ( ( cur = cur.parentNode ) ) { + ap.unshift( cur ); + } + cur = b; + while ( ( cur = cur.parentNode ) ) { + bp.unshift( cur ); } - }) : - function( elem ) { - return fn( elem, 0, args ); - }; - } - return fn; - } - }, + // Walk down the tree looking for a discrepancy + while ( ap[ i ] === bp[ i ] ) { + i++; + } - pseudos: { - // Potentially complex pseudos - "not": markFunction(function( selector ) { - // Trim the selector passed to compile - // to avoid treating leading and trailing - // spaces as combinators - var input = [], - results = [], - matcher = compile( selector.replace( rtrim, "$1" ) ); + return i ? - return matcher[ expando ] ? - markFunction(function( seed, matches, context, xml ) { - var elem, - unmatched = matcher( seed, null, xml, [] ), - i = seed.length; + // Do a sibling check if the nodes have a common ancestor + siblingCheck( ap[ i ], bp[ i ] ) : - // Match elements unmatched by `matcher` - while ( i-- ) { - if ( (elem = unmatched[i]) ) { - seed[i] = !(matches[i] = elem); - } - } - }) : - function( elem, context, xml ) { - input[0] = elem; - matcher( input, null, xml, results ); - // Don't keep the element (issue #299) - input[0] = null; - return !results.pop(); - }; - }), + // Otherwise nodes in our document sort first + // Support: IE 11+, Edge 17 - 18+ + // IE/Edge sometimes throw a "Permission denied" error when strict-comparing + // two documents; shallow comparisons work. + /* eslint-disable eqeqeq */ + ap[ i ] == preferredDoc ? -1 : + bp[ i ] == preferredDoc ? 1 : + /* eslint-enable eqeqeq */ + 0; + }; - "has": markFunction(function( selector ) { - return function( elem ) { - return Sizzle( selector, elem ).length > 0; + return document; }; - }), - "contains": markFunction(function( text ) { - text = text.replace( runescape, funescape ); - return function( elem ) { - return ( elem.textContent || elem.innerText || getText( elem ) ).indexOf( text ) > -1; - }; - }), - - // "Whether an element is represented by a :lang() selector - // is based solely on the element's language value - // being equal to the identifier C, - // or beginning with the identifier C immediately followed by "-". - // The matching of C against the element's language value is performed case-insensitively. - // The identifier C does not have to be a valid language name." - // http://www.w3.org/TR/selectors/#lang-pseudo - "lang": markFunction( function( lang ) { - // lang value must be a valid identifier - if ( !ridentifier.test(lang || "") ) { - Sizzle.error( "unsupported lang: " + lang ); - } - lang = lang.replace( runescape, funescape ).toLowerCase(); - return function( elem ) { - var elemLang; - do { - if ( (elemLang = documentIsHTML ? - elem.lang : - elem.getAttribute("xml:lang") || elem.getAttribute("lang")) ) { - - elemLang = elemLang.toLowerCase(); - return elemLang === lang || elemLang.indexOf( lang + "-" ) === 0; - } - } while ( (elem = elem.parentNode) && elem.nodeType === 1 ); - return false; + Sizzle.matches = function( expr, elements ) { + return Sizzle( expr, null, null, elements ); }; - }), - // Miscellaneous - "target": function( elem ) { - var hash = window.location && window.location.hash; - return hash && hash.slice( 1 ) === elem.id; - }, + Sizzle.matchesSelector = function( elem, expr ) { + setDocument( elem ); - "root": function( elem ) { - return elem === docElem; - }, + if ( support.matchesSelector && documentIsHTML && + !nonnativeSelectorCache[ expr + " " ] && + ( !rbuggyMatches || !rbuggyMatches.test( expr ) ) && + ( !rbuggyQSA || !rbuggyQSA.test( expr ) ) ) { - "focus": function( elem ) { - return elem === document.activeElement && (!document.hasFocus || document.hasFocus()) && !!(elem.type || elem.href || ~elem.tabIndex); - }, + try { + var ret = matches.call( elem, expr ); - // Boolean properties - "enabled": function( elem ) { - return elem.disabled === false; - }, + // IE 9's matchesSelector returns false on disconnected nodes + if ( ret || support.disconnectedMatch || - "disabled": function( elem ) { - return elem.disabled === true; - }, + // As well, disconnected nodes are said to be in a document + // fragment in IE 9 + elem.document && elem.document.nodeType !== 11 ) { + return ret; + } + } catch ( e ) { + nonnativeSelectorCache( expr, true ); + } + } - "checked": function( elem ) { - // In CSS3, :checked should return both checked and selected elements - // http://www.w3.org/TR/2011/REC-css3-selectors-20110929/#checked - var nodeName = elem.nodeName.toLowerCase(); - return (nodeName === "input" && !!elem.checked) || (nodeName === "option" && !!elem.selected); - }, + return Sizzle( expr, document, null, [ elem ] ).length > 0; + }; - "selected": function( elem ) { - // Accessing this property makes selected-by-default - // options in Safari work properly - if ( elem.parentNode ) { - elem.parentNode.selectedIndex; - } + Sizzle.contains = function( context, elem ) { - return elem.selected === true; - }, + // Set document vars if needed + // Support: IE 11+, Edge 17 - 18+ + // IE/Edge sometimes throw a "Permission denied" error when strict-comparing + // two documents; shallow comparisons work. + // eslint-disable-next-line eqeqeq + if ( ( context.ownerDocument || context ) != document ) { + setDocument( context ); + } + return contains( context, elem ); + }; - // Contents - "empty": function( elem ) { - // http://www.w3.org/TR/selectors/#empty-pseudo - // :empty is negated by element (1) or content nodes (text: 3; cdata: 4; entity ref: 5), - // but not by others (comment: 8; processing instruction: 7; etc.) - // nodeType < 6 works because attributes (2) do not appear as children - for ( elem = elem.firstChild; elem; elem = elem.nextSibling ) { - if ( elem.nodeType < 6 ) { - return false; + Sizzle.attr = function( elem, name ) { + + // Set document vars if needed + // Support: IE 11+, Edge 17 - 18+ + // IE/Edge sometimes throw a "Permission denied" error when strict-comparing + // two documents; shallow comparisons work. + // eslint-disable-next-line eqeqeq + if ( ( elem.ownerDocument || elem ) != document ) { + setDocument( elem ); } - } - return true; - }, - "parent": function( elem ) { - return !Expr.pseudos["empty"]( elem ); - }, + var fn = Expr.attrHandle[ name.toLowerCase() ], - // Element/input types - "header": function( elem ) { - return rheader.test( elem.nodeName ); - }, + // Don't get fooled by Object.prototype properties (jQuery #13807) + val = fn && hasOwn.call( Expr.attrHandle, name.toLowerCase() ) ? + fn( elem, name, !documentIsHTML ) : + undefined; - "input": function( elem ) { - return rinputs.test( elem.nodeName ); - }, + return val !== undefined ? + val : + support.attributes || !documentIsHTML ? + elem.getAttribute( name ) : + ( val = elem.getAttributeNode( name ) ) && val.specified ? + val.value : + null; + }; - "button": function( elem ) { - var name = elem.nodeName.toLowerCase(); - return name === "input" && elem.type === "button" || name === "button"; - }, + Sizzle.escape = function( sel ) { + return ( sel + "" ).replace( rcssescape, fcssescape ); + }; - "text": function( elem ) { - var attr; - return elem.nodeName.toLowerCase() === "input" && - elem.type === "text" && + Sizzle.error = function( msg ) { + throw new Error( "Syntax error, unrecognized expression: " + msg ); + }; - // Support: IE<8 - // New HTML5 attribute values (e.g., "search") appear with elem.type === "text" - ( (attr = elem.getAttribute("type")) == null || attr.toLowerCase() === "text" ); - }, + /** + * Document sorting and removing duplicates + * @param {ArrayLike} results + */ + Sizzle.uniqueSort = function( results ) { + var elem, + duplicates = [], + j = 0, + i = 0; + + // Unless we *know* we can detect duplicates, assume their presence + hasDuplicate = !support.detectDuplicates; + sortInput = !support.sortStable && results.slice( 0 ); + results.sort( sortOrder ); + + if ( hasDuplicate ) { + while ( ( elem = results[ i++ ] ) ) { + if ( elem === results[ i ] ) { + j = duplicates.push( i ); + } + } + while ( j-- ) { + results.splice( duplicates[ j ], 1 ); + } + } - // Position-in-collection - "first": createPositionalPseudo(function() { - return [ 0 ]; - }), + // Clear input after sorting to release objects + // See https://github.com/jquery/sizzle/pull/225 + sortInput = null; - "last": createPositionalPseudo(function( matchIndexes, length ) { - return [ length - 1 ]; - }), + return results; + }; - "eq": createPositionalPseudo(function( matchIndexes, length, argument ) { - return [ argument < 0 ? argument + length : argument ]; - }), + /** + * Utility function for retrieving the text value of an array of DOM nodes + * @param {Array|Element} elem + */ + getText = Sizzle.getText = function( elem ) { + var node, + ret = "", + i = 0, + nodeType = elem.nodeType; - "even": createPositionalPseudo(function( matchIndexes, length ) { - var i = 0; - for ( ; i < length; i += 2 ) { - matchIndexes.push( i ); - } - return matchIndexes; - }), + if ( !nodeType ) { - "odd": createPositionalPseudo(function( matchIndexes, length ) { - var i = 1; - for ( ; i < length; i += 2 ) { - matchIndexes.push( i ); - } - return matchIndexes; - }), + // If no nodeType, this is expected to be an array + while ( ( node = elem[ i++ ] ) ) { - "lt": createPositionalPseudo(function( matchIndexes, length, argument ) { - var i = argument < 0 ? argument + length : argument; - for ( ; --i >= 0; ) { - matchIndexes.push( i ); - } - return matchIndexes; - }), + // Do not traverse comment nodes + ret += getText( node ); + } + } else if ( nodeType === 1 || nodeType === 9 || nodeType === 11 ) { - "gt": createPositionalPseudo(function( matchIndexes, length, argument ) { - var i = argument < 0 ? argument + length : argument; - for ( ; ++i < length; ) { - matchIndexes.push( i ); - } - return matchIndexes; - }) - } -}; + // Use textContent for elements + // innerText usage removed for consistency of new lines (jQuery #11153) + if ( typeof elem.textContent === "string" ) { + return elem.textContent; + } else { -Expr.pseudos["nth"] = Expr.pseudos["eq"]; + // Traverse its children + for ( elem = elem.firstChild; elem; elem = elem.nextSibling ) { + ret += getText( elem ); + } + } + } else if ( nodeType === 3 || nodeType === 4 ) { + return elem.nodeValue; + } -// Add button/input type pseudos -for ( i in { radio: true, checkbox: true, file: true, password: true, image: true } ) { - Expr.pseudos[ i ] = createInputPseudo( i ); -} -for ( i in { submit: true, reset: true } ) { - Expr.pseudos[ i ] = createButtonPseudo( i ); -} + // Do not include comment or processing instruction nodes -// Easy API for creating new setFilters -function setFilters() {} -setFilters.prototype = Expr.filters = Expr.pseudos; -Expr.setFilters = new setFilters(); + return ret; + }; -tokenize = Sizzle.tokenize = function( selector, parseOnly ) { - var matched, match, tokens, type, - soFar, groups, preFilters, - cached = tokenCache[ selector + " " ]; + Expr = Sizzle.selectors = { - if ( cached ) { - return parseOnly ? 0 : cached.slice( 0 ); - } + // Can be adjusted by the user + cacheLength: 50, - soFar = selector; - groups = []; - preFilters = Expr.preFilter; + createPseudo: markFunction, - while ( soFar ) { + match: matchExpr, - // Comma and first run - if ( !matched || (match = rcomma.exec( soFar )) ) { - if ( match ) { - // Don't consume trailing commas as valid - soFar = soFar.slice( match[0].length ) || soFar; - } - groups.push( (tokens = []) ); - } + attrHandle: {}, - matched = false; + find: {}, - // Combinators - if ( (match = rcombinators.exec( soFar )) ) { - matched = match.shift(); - tokens.push({ - value: matched, - // Cast descendant combinators to space - type: match[0].replace( rtrim, " " ) - }); - soFar = soFar.slice( matched.length ); - } + relative: { + ">": { dir: "parentNode", first: true }, + " ": { dir: "parentNode" }, + "+": { dir: "previousSibling", first: true }, + "~": { dir: "previousSibling" } + }, - // Filters - for ( type in Expr.filter ) { - if ( (match = matchExpr[ type ].exec( soFar )) && (!preFilters[ type ] || - (match = preFilters[ type ]( match ))) ) { - matched = match.shift(); - tokens.push({ - value: matched, - type: type, - matches: match - }); - soFar = soFar.slice( matched.length ); - } - } + preFilter: { + "ATTR": function( match ) { + match[ 1 ] = match[ 1 ].replace( runescape, funescape ); - if ( !matched ) { - break; - } - } + // Move the given value to match[3] whether quoted or unquoted + match[ 3 ] = ( match[ 3 ] || match[ 4 ] || + match[ 5 ] || "" ).replace( runescape, funescape ); - // Return the length of the invalid excess - // if we're just parsing - // Otherwise, throw an error or return tokens - return parseOnly ? - soFar.length : - soFar ? - Sizzle.error( selector ) : - // Cache the tokens - tokenCache( selector, groups ).slice( 0 ); -}; - -function toSelector( tokens ) { - var i = 0, - len = tokens.length, - selector = ""; - for ( ; i < len; i++ ) { - selector += tokens[i].value; - } - return selector; -} - -function addCombinator( matcher, combinator, base ) { - var dir = combinator.dir, - checkNonElements = base && dir === "parentNode", - doneName = done++; - - return combinator.first ? - // Check against closest ancestor/preceding element - function( elem, context, xml ) { - while ( (elem = elem[ dir ]) ) { - if ( elem.nodeType === 1 || checkNonElements ) { - return matcher( elem, context, xml ); - } - } - } : - - // Check against all ancestor/preceding elements - function( elem, context, xml ) { - var oldCache, outerCache, - newCache = [ dirruns, doneName ]; - - // We can't set arbitrary data on XML nodes, so they don't benefit from dir caching - if ( xml ) { - while ( (elem = elem[ dir ]) ) { - if ( elem.nodeType === 1 || checkNonElements ) { - if ( matcher( elem, context, xml ) ) { - return true; + if ( match[ 2 ] === "~=" ) { + match[ 3 ] = " " + match[ 3 ] + " "; } - } - } - } else { - while ( (elem = elem[ dir ]) ) { - if ( elem.nodeType === 1 || checkNonElements ) { - outerCache = elem[ expando ] || (elem[ expando ] = {}); - if ( (oldCache = outerCache[ dir ]) && - oldCache[ 0 ] === dirruns && oldCache[ 1 ] === doneName ) { - - // Assign to newCache so results back-propagate to previous elements - return (newCache[ 2 ] = oldCache[ 2 ]); - } else { - // Reuse newcache so results back-propagate to previous elements - outerCache[ dir ] = newCache; - // A match means we're done; a fail means we have to keep checking - if ( (newCache[ 2 ] = matcher( elem, context, xml )) ) { - return true; - } - } - } - } - } - }; -} + return match.slice( 0, 4 ); + }, -function elementMatcher( matchers ) { - return matchers.length > 1 ? - function( elem, context, xml ) { - var i = matchers.length; - while ( i-- ) { - if ( !matchers[i]( elem, context, xml ) ) { - return false; - } - } - return true; - } : - matchers[0]; -} - -function multipleContexts( selector, contexts, results ) { - var i = 0, - len = contexts.length; - for ( ; i < len; i++ ) { - Sizzle( selector, contexts[i], results ); - } - return results; -} + "CHILD": function( match ) { -function condense( unmatched, map, filter, context, xml ) { - var elem, - newUnmatched = [], - i = 0, - len = unmatched.length, - mapped = map != null; + /* matches from matchExpr["CHILD"] + 1 type (only|nth|...) + 2 what (child|of-type) + 3 argument (even|odd|\d*|\d*n([+-]\d+)?|...) + 4 xn-component of xn+y argument ([+-]?\d*n|) + 5 sign of xn-component + 6 x of xn-component + 7 sign of y-component + 8 y of y-component + */ + match[ 1 ] = match[ 1 ].toLowerCase(); - for ( ; i < len; i++ ) { - if ( (elem = unmatched[i]) ) { - if ( !filter || filter( elem, context, xml ) ) { - newUnmatched.push( elem ); - if ( mapped ) { - map.push( i ); - } - } - } - } + if ( match[ 1 ].slice( 0, 3 ) === "nth" ) { - return newUnmatched; -} + // nth-* requires argument + if ( !match[ 3 ] ) { + Sizzle.error( match[ 0 ] ); + } -function setMatcher( preFilter, selector, matcher, postFilter, postFinder, postSelector ) { - if ( postFilter && !postFilter[ expando ] ) { - postFilter = setMatcher( postFilter ); - } - if ( postFinder && !postFinder[ expando ] ) { - postFinder = setMatcher( postFinder, postSelector ); - } - return markFunction(function( seed, results, context, xml ) { - var temp, i, elem, - preMap = [], - postMap = [], - preexisting = results.length, + // numeric x and y parameters for Expr.filter.CHILD + // remember that false/true cast respectively to 0/1 + match[ 4 ] = +( match[ 4 ] ? + match[ 5 ] + ( match[ 6 ] || 1 ) : + 2 * ( match[ 3 ] === "even" || match[ 3 ] === "odd" ) ); + match[ 5 ] = +( ( match[ 7 ] + match[ 8 ] ) || match[ 3 ] === "odd" ); - // Get initial elements from seed or context - elems = seed || multipleContexts( selector || "*", context.nodeType ? [ context ] : context, [] ), + // other types prohibit arguments + } else if ( match[ 3 ] ) { + Sizzle.error( match[ 0 ] ); + } - // Prefilter to get matcher input, preserving a map for seed-results synchronization - matcherIn = preFilter && ( seed || !selector ) ? - condense( elems, preMap, preFilter, context, xml ) : - elems, + return match; + }, - matcherOut = matcher ? - // If we have a postFinder, or filtered seed, or non-seed postFilter or preexisting results, - postFinder || ( seed ? preFilter : preexisting || postFilter ) ? + "PSEUDO": function( match ) { + var excess, + unquoted = !match[ 6 ] && match[ 2 ]; - // ...intermediate processing is necessary - [] : + if ( matchExpr[ "CHILD" ].test( match[ 0 ] ) ) { + return null; + } - // ...otherwise use results directly - results : - matcherIn; + // Accept quoted arguments as-is + if ( match[ 3 ] ) { + match[ 2 ] = match[ 4 ] || match[ 5 ] || ""; - // Find primary matches - if ( matcher ) { - matcher( matcherIn, matcherOut, context, xml ); - } + // Strip excess characters from unquoted arguments + } else if ( unquoted && rpseudo.test( unquoted ) && - // Apply postFilter - if ( postFilter ) { - temp = condense( matcherOut, postMap ); - postFilter( temp, [], context, xml ); + // Get excess from tokenize (recursively) + ( excess = tokenize( unquoted, true ) ) && - // Un-match failing elements by moving them back to matcherIn - i = temp.length; - while ( i-- ) { - if ( (elem = temp[i]) ) { - matcherOut[ postMap[i] ] = !(matcherIn[ postMap[i] ] = elem); - } - } - } + // advance to the next closing parenthesis + ( excess = unquoted.indexOf( ")", unquoted.length - excess ) - unquoted.length ) ) { - if ( seed ) { - if ( postFinder || preFilter ) { - if ( postFinder ) { - // Get the final matcherOut by condensing this intermediate into postFinder contexts - temp = []; - i = matcherOut.length; - while ( i-- ) { - if ( (elem = matcherOut[i]) ) { - // Restore matcherIn since elem is not yet a final match - temp.push( (matcherIn[i] = elem) ); + // excess is a negative index + match[ 0 ] = match[ 0 ].slice( 0, excess ); + match[ 2 ] = unquoted.slice( 0, excess ); } + + // Return only captures needed by the pseudo filter method (type and argument) + return match.slice( 0, 3 ); } - postFinder( null, (matcherOut = []), temp, xml ); - } + }, - // Move matched elements from seed to results to keep them synchronized - i = matcherOut.length; - while ( i-- ) { - if ( (elem = matcherOut[i]) && - (temp = postFinder ? indexOf( seed, elem ) : preMap[i]) > -1 ) { + filter: { - seed[temp] = !(results[temp] = elem); - } - } - } + "TAG": function( nodeNameSelector ) { + var nodeName = nodeNameSelector.replace( runescape, funescape ).toLowerCase(); + return nodeNameSelector === "*" ? + function() { + return true; + } : + function( elem ) { + return elem.nodeName && elem.nodeName.toLowerCase() === nodeName; + }; + }, + + "CLASS": function( className ) { + var pattern = classCache[ className + " " ]; + + return pattern || + ( pattern = new RegExp( "(^|" + whitespace + + ")" + className + "(" + whitespace + "|$)" ) ) && classCache( + className, function( elem ) { + return pattern.test( + typeof elem.className === "string" && elem.className || + typeof elem.getAttribute !== "undefined" && + elem.getAttribute( "class" ) || + "" + ); + } ); + }, + + "ATTR": function( name, operator, check ) { + return function( elem ) { + var result = Sizzle.attr( elem, name ); + + if ( result == null ) { + return operator === "!="; + } + if ( !operator ) { + return true; + } - // Add elements to results, through postFinder if defined - } else { - matcherOut = condense( - matcherOut === results ? - matcherOut.splice( preexisting, matcherOut.length ) : - matcherOut - ); - if ( postFinder ) { - postFinder( null, results, matcherOut, xml ); - } else { - push.apply( results, matcherOut ); - } - } - }); -} - -function matcherFromTokens( tokens ) { - var checkContext, matcher, j, - len = tokens.length, - leadingRelative = Expr.relative[ tokens[0].type ], - implicitRelative = leadingRelative || Expr.relative[" "], - i = leadingRelative ? 1 : 0, - - // The foundational matcher ensures that elements are reachable from top-level context(s) - matchContext = addCombinator( function( elem ) { - return elem === checkContext; - }, implicitRelative, true ), - matchAnyContext = addCombinator( function( elem ) { - return indexOf( checkContext, elem ) > -1; - }, implicitRelative, true ), - matchers = [ function( elem, context, xml ) { - var ret = ( !leadingRelative && ( xml || context !== outermostContext ) ) || ( - (checkContext = context).nodeType ? - matchContext( elem, context, xml ) : - matchAnyContext( elem, context, xml ) ); - // Avoid hanging onto element (issue #299) - checkContext = null; - return ret; - } ]; + result += ""; + + /* eslint-disable max-len */ + + return operator === "=" ? result === check : + operator === "!=" ? result !== check : + operator === "^=" ? check && result.indexOf( check ) === 0 : + operator === "*=" ? check && result.indexOf( check ) > -1 : + operator === "$=" ? check && result.slice( -check.length ) === check : + operator === "~=" ? ( " " + result.replace( rwhitespace, " " ) + " " ).indexOf( check ) > -1 : + operator === "|=" ? result === check || result.slice( 0, check.length + 1 ) === check + "-" : + false; + /* eslint-enable max-len */ + + }; + }, + + "CHILD": function( type, what, _argument, first, last ) { + var simple = type.slice( 0, 3 ) !== "nth", + forward = type.slice( -4 ) !== "last", + ofType = what === "of-type"; + + return first === 1 && last === 0 ? + + // Shortcut for :nth-*(n) + function( elem ) { + return !!elem.parentNode; + } : + + function( elem, _context, xml ) { + var cache, uniqueCache, outerCache, node, nodeIndex, start, + dir = simple !== forward ? "nextSibling" : "previousSibling", + parent = elem.parentNode, + name = ofType && elem.nodeName.toLowerCase(), + useCache = !xml && !ofType, + diff = false; + + if ( parent ) { + + // :(first|last|only)-(child|of-type) + if ( simple ) { + while ( dir ) { + node = elem; + while ( ( node = node[ dir ] ) ) { + if ( ofType ? + node.nodeName.toLowerCase() === name : + node.nodeType === 1 ) { + + return false; + } + } + + // Reverse direction for :only-* (if we haven't yet done so) + start = dir = type === "only" && !start && "nextSibling"; + } + return true; + } - for ( ; i < len; i++ ) { - if ( (matcher = Expr.relative[ tokens[i].type ]) ) { - matchers = [ addCombinator(elementMatcher( matchers ), matcher) ]; - } else { - matcher = Expr.filter[ tokens[i].type ].apply( null, tokens[i].matches ); - - // Return special upon seeing a positional matcher - if ( matcher[ expando ] ) { - // Find the next relative operator (if any) for proper handling - j = ++i; - for ( ; j < len; j++ ) { - if ( Expr.relative[ tokens[j].type ] ) { - break; - } - } - return setMatcher( - i > 1 && elementMatcher( matchers ), - i > 1 && toSelector( - // If the preceding token was a descendant combinator, insert an implicit any-element `*` - tokens.slice( 0, i - 1 ).concat({ value: tokens[ i - 2 ].type === " " ? "*" : "" }) - ).replace( rtrim, "$1" ), - matcher, - i < j && matcherFromTokens( tokens.slice( i, j ) ), - j < len && matcherFromTokens( (tokens = tokens.slice( j )) ), - j < len && toSelector( tokens ) - ); - } - matchers.push( matcher ); - } - } + start = [ forward ? parent.firstChild : parent.lastChild ]; - return elementMatcher( matchers ); -} - -function matcherFromGroupMatchers( elementMatchers, setMatchers ) { - var bySet = setMatchers.length > 0, - byElement = elementMatchers.length > 0, - superMatcher = function( seed, context, xml, results, outermost ) { - var elem, j, matcher, - matchedCount = 0, - i = "0", - unmatched = seed && [], - setMatched = [], - contextBackup = outermostContext, - // We must always have either seed elements or outermost context - elems = seed || byElement && Expr.find["TAG"]( "*", outermost ), - // Use integer dirruns iff this is the outermost matcher - dirrunsUnique = (dirruns += contextBackup == null ? 1 : Math.random() || 0.1), - len = elems.length; - - if ( outermost ) { - outermostContext = context !== document && context; - } - - // Add elements passing elementMatchers directly to results - // Keep `i` a string if there are no elements so `matchedCount` will be "00" below - // Support: IE<9, Safari - // Tolerate NodeList properties (IE: "length"; Safari: ) matching elements by id - for ( ; i !== len && (elem = elems[i]) != null; i++ ) { - if ( byElement && elem ) { - j = 0; - while ( (matcher = elementMatchers[j++]) ) { - if ( matcher( elem, context, xml ) ) { - results.push( elem ); - break; - } - } - if ( outermost ) { - dirruns = dirrunsUnique; - } - } + // non-xml :nth-child(...) stores cache data on `parent` + if ( forward && useCache ) { - // Track unmatched elements for set filters - if ( bySet ) { - // They will have gone through all possible matchers - if ( (elem = !matcher && elem) ) { - matchedCount--; - } + // Seek `elem` from a previously-cached index - // Lengthen the array for every element, matched or not - if ( seed ) { - unmatched.push( elem ); - } - } - } + // ...in a gzip-friendly way + node = parent; + outerCache = node[ expando ] || ( node[ expando ] = {} ); - // Apply set filters to unmatched elements - matchedCount += i; - if ( bySet && i !== matchedCount ) { - j = 0; - while ( (matcher = setMatchers[j++]) ) { - matcher( unmatched, setMatched, context, xml ); - } + // Support: IE <9 only + // Defend against cloned attroperties (jQuery gh-1709) + uniqueCache = outerCache[ node.uniqueID ] || + ( outerCache[ node.uniqueID ] = {} ); - if ( seed ) { - // Reintegrate element matches to eliminate the need for sorting - if ( matchedCount > 0 ) { - while ( i-- ) { - if ( !(unmatched[i] || setMatched[i]) ) { - setMatched[i] = pop.call( results ); - } - } - } + cache = uniqueCache[ type ] || []; + nodeIndex = cache[ 0 ] === dirruns && cache[ 1 ]; + diff = nodeIndex && cache[ 2 ]; + node = nodeIndex && parent.childNodes[ nodeIndex ]; - // Discard index placeholder values to get only actual matches - setMatched = condense( setMatched ); - } + while ( ( node = ++nodeIndex && node && node[ dir ] || - // Add matches to results - push.apply( results, setMatched ); + // Fallback to seeking `elem` from the start + ( diff = nodeIndex = 0 ) || start.pop() ) ) { - // Seedless set matches succeeding multiple successful matchers stipulate sorting - if ( outermost && !seed && setMatched.length > 0 && - ( matchedCount + setMatchers.length ) > 1 ) { + // When found, cache indexes on `parent` and break + if ( node.nodeType === 1 && ++diff && node === elem ) { + uniqueCache[ type ] = [ dirruns, nodeIndex, diff ]; + break; + } + } - Sizzle.uniqueSort( results ); - } - } + } else { - // Override manipulation of globals by nested matchers - if ( outermost ) { - dirruns = dirrunsUnique; - outermostContext = contextBackup; - } + // Use previously-cached element index if available + if ( useCache ) { - return unmatched; - }; + // ...in a gzip-friendly way + node = elem; + outerCache = node[ expando ] || ( node[ expando ] = {} ); - return bySet ? - markFunction( superMatcher ) : - superMatcher; -} + // Support: IE <9 only + // Defend against cloned attroperties (jQuery gh-1709) + uniqueCache = outerCache[ node.uniqueID ] || + ( outerCache[ node.uniqueID ] = {} ); -compile = Sizzle.compile = function( selector, match /* Internal Use Only */ ) { - var i, - setMatchers = [], - elementMatchers = [], - cached = compilerCache[ selector + " " ]; + cache = uniqueCache[ type ] || []; + nodeIndex = cache[ 0 ] === dirruns && cache[ 1 ]; + diff = nodeIndex; + } - if ( !cached ) { - // Generate a function of recursive functions that can be used to check each element - if ( !match ) { - match = tokenize( selector ); - } - i = match.length; - while ( i-- ) { - cached = matcherFromTokens( match[i] ); - if ( cached[ expando ] ) { - setMatchers.push( cached ); - } else { - elementMatchers.push( cached ); - } - } + // xml :nth-child(...) + // or :nth-last-child(...) or :nth(-last)?-of-type(...) + if ( diff === false ) { - // Cache the compiled function - cached = compilerCache( selector, matcherFromGroupMatchers( elementMatchers, setMatchers ) ); + // Use the same loop as above to seek `elem` from the start + while ( ( node = ++nodeIndex && node && node[ dir ] || + ( diff = nodeIndex = 0 ) || start.pop() ) ) { - // Save selector and tokenization - cached.selector = selector; - } - return cached; -}; - -/** - * A low-level selection function that works with Sizzle's compiled - * selector functions - * @param {String|Function} selector A selector or a pre-compiled - * selector function built with Sizzle.compile - * @param {Element} context - * @param {Array} [results] - * @param {Array} [seed] A set of elements to match against - */ -select = Sizzle.select = function( selector, context, results, seed ) { - var i, tokens, token, type, find, - compiled = typeof selector === "function" && selector, - match = !seed && tokenize( (selector = compiled.selector || selector) ); + if ( ( ofType ? + node.nodeName.toLowerCase() === name : + node.nodeType === 1 ) && + ++diff ) { - results = results || []; + // Cache the index of each encountered element + if ( useCache ) { + outerCache = node[ expando ] || + ( node[ expando ] = {} ); - // Try to minimize operations if there is no seed and only one group - if ( match.length === 1 ) { + // Support: IE <9 only + // Defend against cloned attroperties (jQuery gh-1709) + uniqueCache = outerCache[ node.uniqueID ] || + ( outerCache[ node.uniqueID ] = {} ); - // Take a shortcut and set the context if the root selector is an ID - tokens = match[0] = match[0].slice( 0 ); - if ( tokens.length > 2 && (token = tokens[0]).type === "ID" && - support.getById && context.nodeType === 9 && documentIsHTML && - Expr.relative[ tokens[1].type ] ) { + uniqueCache[ type ] = [ dirruns, diff ]; + } - context = ( Expr.find["ID"]( token.matches[0].replace(runescape, funescape), context ) || [] )[0]; - if ( !context ) { - return results; + if ( node === elem ) { + break; + } + } + } + } + } - // Precompiled matchers will still verify ancestry, so step up a level - } else if ( compiled ) { - context = context.parentNode; - } + // Incorporate the offset, then check against cycle size + diff -= last; + return diff === first || ( diff % first === 0 && diff / first >= 0 ); + } + }; + }, + + "PSEUDO": function( pseudo, argument ) { + + // pseudo-class names are case-insensitive + // http://www.w3.org/TR/selectors/#pseudo-classes + // Prioritize by case sensitivity in case custom pseudos are added with uppercase letters + // Remember that setFilters inherits from pseudos + var args, + fn = Expr.pseudos[ pseudo ] || Expr.setFilters[ pseudo.toLowerCase() ] || + Sizzle.error( "unsupported pseudo: " + pseudo ); + + // The user may use createPseudo to indicate that + // arguments are needed to create the filter function + // just as Sizzle does + if ( fn[ expando ] ) { + return fn( argument ); + } - selector = selector.slice( tokens.shift().value.length ); - } + // But maintain support for old signatures + if ( fn.length > 1 ) { + args = [ pseudo, pseudo, "", argument ]; + return Expr.setFilters.hasOwnProperty( pseudo.toLowerCase() ) ? + markFunction( function( seed, matches ) { + var idx, + matched = fn( seed, argument ), + i = matched.length; + while ( i-- ) { + idx = indexOf( seed, matched[ i ] ); + seed[ idx ] = !( matches[ idx ] = matched[ i ] ); + } + } ) : + function( elem ) { + return fn( elem, 0, args ); + }; + } - // Fetch a seed set for right-to-left matching - i = matchExpr["needsContext"].test( selector ) ? 0 : tokens.length; - while ( i-- ) { - token = tokens[i]; - - // Abort if we hit a combinator - if ( Expr.relative[ (type = token.type) ] ) { - break; - } - if ( (find = Expr.find[ type ]) ) { - // Search, expanding context for leading sibling combinators - if ( (seed = find( - token.matches[0].replace( runescape, funescape ), - rsibling.test( tokens[0].type ) && testContext( context.parentNode ) || context - )) ) { - - // If seed is empty or no tokens remain, we can return early - tokens.splice( i, 1 ); - selector = seed.length && toSelector( tokens ); - if ( !selector ) { - push.apply( results, seed ); - return results; + return fn; } + }, - break; - } - } - } - } + pseudos: { - // Compile and execute a filtering function if one is not provided - // Provide `match` to avoid retokenization if we modified the selector above - ( compiled || compile( selector, match ) )( - seed, - context, - !documentIsHTML, - results, - rsibling.test( selector ) && testContext( context.parentNode ) || context - ); - return results; -}; + // Potentially complex pseudos + "not": markFunction( function( selector ) { -// One-time assignments + // Trim the selector passed to compile + // to avoid treating leading and trailing + // spaces as combinators + var input = [], + results = [], + matcher = compile( selector.replace( rtrim, "$1" ) ); -// Sort stability -support.sortStable = expando.split("").sort( sortOrder ).join("") === expando; + return matcher[ expando ] ? + markFunction( function( seed, matches, _context, xml ) { + var elem, + unmatched = matcher( seed, null, xml, [] ), + i = seed.length; -// Support: Chrome 14-35+ -// Always assume duplicates if they aren't passed to the comparison function -support.detectDuplicates = !!hasDuplicate; + // Match elements unmatched by `matcher` + while ( i-- ) { + if ( ( elem = unmatched[ i ] ) ) { + seed[ i ] = !( matches[ i ] = elem ); + } + } + } ) : + function( elem, _context, xml ) { + input[ 0 ] = elem; + matcher( input, null, xml, results ); + + // Don't keep the element (issue #299) + input[ 0 ] = null; + return !results.pop(); + }; + } ), + + "has": markFunction( function( selector ) { + return function( elem ) { + return Sizzle( selector, elem ).length > 0; + }; + } ), + + "contains": markFunction( function( text ) { + text = text.replace( runescape, funescape ); + return function( elem ) { + return ( elem.textContent || getText( elem ) ).indexOf( text ) > -1; + }; + } ), + + // "Whether an element is represented by a :lang() selector + // is based solely on the element's language value + // being equal to the identifier C, + // or beginning with the identifier C immediately followed by "-". + // The matching of C against the element's language value is performed case-insensitively. + // The identifier C does not have to be a valid language name." + // http://www.w3.org/TR/selectors/#lang-pseudo + "lang": markFunction( function( lang ) { + + // lang value must be a valid identifier + if ( !ridentifier.test( lang || "" ) ) { + Sizzle.error( "unsupported lang: " + lang ); + } + lang = lang.replace( runescape, funescape ).toLowerCase(); + return function( elem ) { + var elemLang; + do { + if ( ( elemLang = documentIsHTML ? + elem.lang : + elem.getAttribute( "xml:lang" ) || elem.getAttribute( "lang" ) ) ) { + + elemLang = elemLang.toLowerCase(); + return elemLang === lang || elemLang.indexOf( lang + "-" ) === 0; + } + } while ( ( elem = elem.parentNode ) && elem.nodeType === 1 ); + return false; + }; + } ), + + // Miscellaneous + "target": function( elem ) { + var hash = window.location && window.location.hash; + return hash && hash.slice( 1 ) === elem.id; + }, + + "root": function( elem ) { + return elem === docElem; + }, + + "focus": function( elem ) { + return elem === document.activeElement && + ( !document.hasFocus || document.hasFocus() ) && + !!( elem.type || elem.href || ~elem.tabIndex ); + }, + + // Boolean properties + "enabled": createDisabledPseudo( false ), + "disabled": createDisabledPseudo( true ), + + "checked": function( elem ) { + + // In CSS3, :checked should return both checked and selected elements + // http://www.w3.org/TR/2011/REC-css3-selectors-20110929/#checked + var nodeName = elem.nodeName.toLowerCase(); + return ( nodeName === "input" && !!elem.checked ) || + ( nodeName === "option" && !!elem.selected ); + }, + + "selected": function( elem ) { + + // Accessing this property makes selected-by-default + // options in Safari work properly + if ( elem.parentNode ) { + // eslint-disable-next-line no-unused-expressions + elem.parentNode.selectedIndex; + } -// Initialize against the default document -setDocument(); + return elem.selected === true; + }, -// Support: Webkit<537.32 - Safari 6.0.3/Chrome 25 (fixed in Chrome 27) -// Detached nodes confoundingly follow *each other* -support.sortDetached = assert(function( div1 ) { - // Should return 1, but returns 4 (following) - return div1.compareDocumentPosition( document.createElement("div") ) & 1; -}); + // Contents + "empty": function( elem ) { -// Support: IE<8 -// Prevent attribute/property "interpolation" -// http://msdn.microsoft.com/en-us/library/ms536429%28VS.85%29.aspx -if ( !assert(function( div ) { - div.innerHTML = ""; - return div.firstChild.getAttribute("href") === "#" ; -}) ) { - addHandle( "type|href|height|width", function( elem, name, isXML ) { - if ( !isXML ) { - return elem.getAttribute( name, name.toLowerCase() === "type" ? 1 : 2 ); - } - }); -} + // http://www.w3.org/TR/selectors/#empty-pseudo + // :empty is negated by element (1) or content nodes (text: 3; cdata: 4; entity ref: 5), + // but not by others (comment: 8; processing instruction: 7; etc.) + // nodeType < 6 works because attributes (2) do not appear as children + for ( elem = elem.firstChild; elem; elem = elem.nextSibling ) { + if ( elem.nodeType < 6 ) { + return false; + } + } + return true; + }, + + "parent": function( elem ) { + return !Expr.pseudos[ "empty" ]( elem ); + }, + + // Element/input types + "header": function( elem ) { + return rheader.test( elem.nodeName ); + }, + + "input": function( elem ) { + return rinputs.test( elem.nodeName ); + }, + + "button": function( elem ) { + var name = elem.nodeName.toLowerCase(); + return name === "input" && elem.type === "button" || name === "button"; + }, + + "text": function( elem ) { + var attr; + return elem.nodeName.toLowerCase() === "input" && + elem.type === "text" && + + // Support: IE<8 + // New HTML5 attribute values (e.g., "search") appear with elem.type === "text" + ( ( attr = elem.getAttribute( "type" ) ) == null || + attr.toLowerCase() === "text" ); + }, + + // Position-in-collection + "first": createPositionalPseudo( function() { + return [ 0 ]; + } ), + + "last": createPositionalPseudo( function( _matchIndexes, length ) { + return [ length - 1 ]; + } ), + + "eq": createPositionalPseudo( function( _matchIndexes, length, argument ) { + return [ argument < 0 ? argument + length : argument ]; + } ), + + "even": createPositionalPseudo( function( matchIndexes, length ) { + var i = 0; + for ( ; i < length; i += 2 ) { + matchIndexes.push( i ); + } + return matchIndexes; + } ), -// Support: IE<9 -// Use defaultValue in place of getAttribute("value") -if ( !support.attributes || !assert(function( div ) { - div.innerHTML = ""; - div.firstChild.setAttribute( "value", "" ); - return div.firstChild.getAttribute( "value" ) === ""; -}) ) { - addHandle( "value", function( elem, name, isXML ) { - if ( !isXML && elem.nodeName.toLowerCase() === "input" ) { - return elem.defaultValue; - } - }); -} + "odd": createPositionalPseudo( function( matchIndexes, length ) { + var i = 1; + for ( ; i < length; i += 2 ) { + matchIndexes.push( i ); + } + return matchIndexes; + } ), + + "lt": createPositionalPseudo( function( matchIndexes, length, argument ) { + var i = argument < 0 ? + argument + length : + argument > length ? + length : + argument; + for ( ; --i >= 0; ) { + matchIndexes.push( i ); + } + return matchIndexes; + } ), -// Support: IE<9 -// Use getAttributeNode to fetch booleans when getAttribute lies -if ( !assert(function( div ) { - return div.getAttribute("disabled") == null; -}) ) { - addHandle( booleans, function( elem, name, isXML ) { - var val; - if ( !isXML ) { - return elem[ name ] === true ? name.toLowerCase() : - (val = elem.getAttributeNode( name )) && val.specified ? - val.value : - null; - } - }); -} + "gt": createPositionalPseudo( function( matchIndexes, length, argument ) { + var i = argument < 0 ? argument + length : argument; + for ( ; ++i < length; ) { + matchIndexes.push( i ); + } + return matchIndexes; + } ) + } + }; -return Sizzle; + Expr.pseudos[ "nth" ] = Expr.pseudos[ "eq" ]; -})( window ); +// Add button/input type pseudos + for ( i in { radio: true, checkbox: true, file: true, password: true, image: true } ) { + Expr.pseudos[ i ] = createInputPseudo( i ); + } + for ( i in { submit: true, reset: true } ) { + Expr.pseudos[ i ] = createButtonPseudo( i ); + } +// Easy API for creating new setFilters + function setFilters() {} + setFilters.prototype = Expr.filters = Expr.pseudos; + Expr.setFilters = new setFilters(); + tokenize = Sizzle.tokenize = function( selector, parseOnly ) { + var matched, match, tokens, type, + soFar, groups, preFilters, + cached = tokenCache[ selector + " " ]; -jQuery.find = Sizzle; -jQuery.expr = Sizzle.selectors; -jQuery.expr[":"] = jQuery.expr.pseudos; -jQuery.unique = Sizzle.uniqueSort; -jQuery.text = Sizzle.getText; -jQuery.isXMLDoc = Sizzle.isXML; -jQuery.contains = Sizzle.contains; + if ( cached ) { + return parseOnly ? 0 : cached.slice( 0 ); + } + soFar = selector; + groups = []; + preFilters = Expr.preFilter; + while ( soFar ) { -var rneedsContext = jQuery.expr.match.needsContext; + // Comma and first run + if ( !matched || ( match = rcomma.exec( soFar ) ) ) { + if ( match ) { -var rsingleTag = (/^<(\w+)\s*\/?>(?:<\/\1>|)$/); + // Don't consume trailing commas as valid + soFar = soFar.slice( match[ 0 ].length ) || soFar; + } + groups.push( ( tokens = [] ) ); + } + matched = false; + // Combinators + if ( ( match = rcombinators.exec( soFar ) ) ) { + matched = match.shift(); + tokens.push( { + value: matched, -var risSimple = /^.[^:#\[\.,]*$/; + // Cast descendant combinators to space + type: match[ 0 ].replace( rtrim, " " ) + } ); + soFar = soFar.slice( matched.length ); + } -// Implement the identical functionality for filter and not -function winnow( elements, qualifier, not ) { - if ( jQuery.isFunction( qualifier ) ) { - return jQuery.grep( elements, function( elem, i ) { - /* jshint -W018 */ - return !!qualifier.call( elem, i, elem ) !== not; - }); + // Filters + for ( type in Expr.filter ) { + if ( ( match = matchExpr[ type ].exec( soFar ) ) && ( !preFilters[ type ] || + ( match = preFilters[ type ]( match ) ) ) ) { + matched = match.shift(); + tokens.push( { + value: matched, + type: type, + matches: match + } ); + soFar = soFar.slice( matched.length ); + } + } - } + if ( !matched ) { + break; + } + } - if ( qualifier.nodeType ) { - return jQuery.grep( elements, function( elem ) { - return ( elem === qualifier ) !== not; - }); + // Return the length of the invalid excess + // if we're just parsing + // Otherwise, throw an error or return tokens + return parseOnly ? + soFar.length : + soFar ? + Sizzle.error( selector ) : - } + // Cache the tokens + tokenCache( selector, groups ).slice( 0 ); + }; - if ( typeof qualifier === "string" ) { - if ( risSimple.test( qualifier ) ) { - return jQuery.filter( qualifier, elements, not ); - } + function toSelector( tokens ) { + var i = 0, + len = tokens.length, + selector = ""; + for ( ; i < len; i++ ) { + selector += tokens[ i ].value; + } + return selector; + } - qualifier = jQuery.filter( qualifier, elements ); - } + function addCombinator( matcher, combinator, base ) { + var dir = combinator.dir, + skip = combinator.next, + key = skip || dir, + checkNonElements = base && key === "parentNode", + doneName = done++; - return jQuery.grep( elements, function( elem ) { - return ( jQuery.inArray( elem, qualifier ) >= 0 ) !== not; - }); -} + return combinator.first ? -jQuery.filter = function( expr, elems, not ) { - var elem = elems[ 0 ]; + // Check against closest ancestor/preceding element + function( elem, context, xml ) { + while ( ( elem = elem[ dir ] ) ) { + if ( elem.nodeType === 1 || checkNonElements ) { + return matcher( elem, context, xml ); + } + } + return false; + } : + + // Check against all ancestor/preceding elements + function( elem, context, xml ) { + var oldCache, uniqueCache, outerCache, + newCache = [ dirruns, doneName ]; + + // We can't set arbitrary data on XML nodes, so they don't benefit from combinator caching + if ( xml ) { + while ( ( elem = elem[ dir ] ) ) { + if ( elem.nodeType === 1 || checkNonElements ) { + if ( matcher( elem, context, xml ) ) { + return true; + } + } + } + } else { + while ( ( elem = elem[ dir ] ) ) { + if ( elem.nodeType === 1 || checkNonElements ) { + outerCache = elem[ expando ] || ( elem[ expando ] = {} ); + + // Support: IE <9 only + // Defend against cloned attroperties (jQuery gh-1709) + uniqueCache = outerCache[ elem.uniqueID ] || + ( outerCache[ elem.uniqueID ] = {} ); + + if ( skip && skip === elem.nodeName.toLowerCase() ) { + elem = elem[ dir ] || elem; + } else if ( ( oldCache = uniqueCache[ key ] ) && + oldCache[ 0 ] === dirruns && oldCache[ 1 ] === doneName ) { + + // Assign to newCache so results back-propagate to previous elements + return ( newCache[ 2 ] = oldCache[ 2 ] ); + } else { + + // Reuse newcache so results back-propagate to previous elements + uniqueCache[ key ] = newCache; + + // A match means we're done; a fail means we have to keep checking + if ( ( newCache[ 2 ] = matcher( elem, context, xml ) ) ) { + return true; + } + } + } + } + } + return false; + }; + } - if ( not ) { - expr = ":not(" + expr + ")"; - } + function elementMatcher( matchers ) { + return matchers.length > 1 ? + function( elem, context, xml ) { + var i = matchers.length; + while ( i-- ) { + if ( !matchers[ i ]( elem, context, xml ) ) { + return false; + } + } + return true; + } : + matchers[ 0 ]; + } - return elems.length === 1 && elem.nodeType === 1 ? - jQuery.find.matchesSelector( elem, expr ) ? [ elem ] : [] : - jQuery.find.matches( expr, jQuery.grep( elems, function( elem ) { - return elem.nodeType === 1; - })); -}; + function multipleContexts( selector, contexts, results ) { + var i = 0, + len = contexts.length; + for ( ; i < len; i++ ) { + Sizzle( selector, contexts[ i ], results ); + } + return results; + } -jQuery.fn.extend({ - find: function( selector ) { - var i, - ret = [], - self = this, - len = self.length; + function condense( unmatched, map, filter, context, xml ) { + var elem, + newUnmatched = [], + i = 0, + len = unmatched.length, + mapped = map != null; - if ( typeof selector !== "string" ) { - return this.pushStack( jQuery( selector ).filter(function() { - for ( i = 0; i < len; i++ ) { - if ( jQuery.contains( self[ i ], this ) ) { - return true; + for ( ; i < len; i++ ) { + if ( ( elem = unmatched[ i ] ) ) { + if ( !filter || filter( elem, context, xml ) ) { + newUnmatched.push( elem ); + if ( mapped ) { + map.push( i ); + } + } } } - }) ); - } - - for ( i = 0; i < len; i++ ) { - jQuery.find( selector, self[ i ], ret ); - } - // Needed because $( selector, context ) becomes $( context ).find( selector ) - ret = this.pushStack( len > 1 ? jQuery.unique( ret ) : ret ); - ret.selector = this.selector ? this.selector + " " + selector : selector; - return ret; - }, - filter: function( selector ) { - return this.pushStack( winnow(this, selector || [], false) ); - }, - not: function( selector ) { - return this.pushStack( winnow(this, selector || [], true) ); - }, - is: function( selector ) { - return !!winnow( - this, - - // If this is a positional/relative selector, check membership in the returned set - // so $("p:first").is("p:last") won't return true for a doc with two "p". - typeof selector === "string" && rneedsContext.test( selector ) ? - jQuery( selector ) : - selector || [], - false - ).length; - } -}); + return newUnmatched; + } + function setMatcher( preFilter, selector, matcher, postFilter, postFinder, postSelector ) { + if ( postFilter && !postFilter[ expando ] ) { + postFilter = setMatcher( postFilter ); + } + if ( postFinder && !postFinder[ expando ] ) { + postFinder = setMatcher( postFinder, postSelector ); + } + return markFunction( function( seed, results, context, xml ) { + var temp, i, elem, + preMap = [], + postMap = [], + preexisting = results.length, + + // Get initial elements from seed or context + elems = seed || multipleContexts( + selector || "*", + context.nodeType ? [ context ] : context, + [] + ), + + // Prefilter to get matcher input, preserving a map for seed-results synchronization + matcherIn = preFilter && ( seed || !selector ) ? + condense( elems, preMap, preFilter, context, xml ) : + elems, + + matcherOut = matcher ? + + // If we have a postFinder, or filtered seed, or non-seed postFilter or preexisting results, + postFinder || ( seed ? preFilter : preexisting || postFilter ) ? + + // ...intermediate processing is necessary + [] : + + // ...otherwise use results directly + results : + matcherIn; + + // Find primary matches + if ( matcher ) { + matcher( matcherIn, matcherOut, context, xml ); + } -// Initialize a jQuery object + // Apply postFilter + if ( postFilter ) { + temp = condense( matcherOut, postMap ); + postFilter( temp, [], context, xml ); + // Un-match failing elements by moving them back to matcherIn + i = temp.length; + while ( i-- ) { + if ( ( elem = temp[ i ] ) ) { + matcherOut[ postMap[ i ] ] = !( matcherIn[ postMap[ i ] ] = elem ); + } + } + } -// A central reference to the root jQuery(document) -var rootjQuery, + if ( seed ) { + if ( postFinder || preFilter ) { + if ( postFinder ) { - // Use the correct document accordingly with window argument (sandbox) - document = window.document, + // Get the final matcherOut by condensing this intermediate into postFinder contexts + temp = []; + i = matcherOut.length; + while ( i-- ) { + if ( ( elem = matcherOut[ i ] ) ) { - // A simple way to check for HTML strings - // Prioritize #id over to avoid XSS via location.hash (#9521) - // Strict HTML recognition (#11290: must start with <) - rquickExpr = /^(?:\s*(<[\w\W]+>)[^>]*|#([\w-]*))$/, + // Restore matcherIn since elem is not yet a final match + temp.push( ( matcherIn[ i ] = elem ) ); + } + } + postFinder( null, ( matcherOut = [] ), temp, xml ); + } - init = jQuery.fn.init = function( selector, context ) { - var match, elem; + // Move matched elements from seed to results to keep them synchronized + i = matcherOut.length; + while ( i-- ) { + if ( ( elem = matcherOut[ i ] ) && + ( temp = postFinder ? indexOf( seed, elem ) : preMap[ i ] ) > -1 ) { - // HANDLE: $(""), $(null), $(undefined), $(false) - if ( !selector ) { - return this; - } + seed[ temp ] = !( results[ temp ] = elem ); + } + } + } - // Handle HTML strings - if ( typeof selector === "string" ) { - if ( selector.charAt(0) === "<" && selector.charAt( selector.length - 1 ) === ">" && selector.length >= 3 ) { - // Assume that strings that start and end with <> are HTML and skip the regex check - match = [ null, selector, null ]; + // Add elements to results, through postFinder if defined + } else { + matcherOut = condense( + matcherOut === results ? + matcherOut.splice( preexisting, matcherOut.length ) : + matcherOut + ); + if ( postFinder ) { + postFinder( null, results, matcherOut, xml ); + } else { + push.apply( results, matcherOut ); + } + } + } ); + } + + function matcherFromTokens( tokens ) { + var checkContext, matcher, j, + len = tokens.length, + leadingRelative = Expr.relative[ tokens[ 0 ].type ], + implicitRelative = leadingRelative || Expr.relative[ " " ], + i = leadingRelative ? 1 : 0, + + // The foundational matcher ensures that elements are reachable from top-level context(s) + matchContext = addCombinator( function( elem ) { + return elem === checkContext; + }, implicitRelative, true ), + matchAnyContext = addCombinator( function( elem ) { + return indexOf( checkContext, elem ) > -1; + }, implicitRelative, true ), + matchers = [ function( elem, context, xml ) { + var ret = ( !leadingRelative && ( xml || context !== outermostContext ) ) || ( + ( checkContext = context ).nodeType ? + matchContext( elem, context, xml ) : + matchAnyContext( elem, context, xml ) ); + + // Avoid hanging onto element (issue #299) + checkContext = null; + return ret; + } ]; - } else { - match = rquickExpr.exec( selector ); + for ( ; i < len; i++ ) { + if ( ( matcher = Expr.relative[ tokens[ i ].type ] ) ) { + matchers = [ addCombinator( elementMatcher( matchers ), matcher ) ]; + } else { + matcher = Expr.filter[ tokens[ i ].type ].apply( null, tokens[ i ].matches ); + + // Return special upon seeing a positional matcher + if ( matcher[ expando ] ) { + + // Find the next relative operator (if any) for proper handling + j = ++i; + for ( ; j < len; j++ ) { + if ( Expr.relative[ tokens[ j ].type ] ) { + break; + } + } + return setMatcher( + i > 1 && elementMatcher( matchers ), + i > 1 && toSelector( + + // If the preceding token was a descendant combinator, insert an implicit any-element `*` + tokens + .slice( 0, i - 1 ) + .concat( { value: tokens[ i - 2 ].type === " " ? "*" : "" } ) + ).replace( rtrim, "$1" ), + matcher, + i < j && matcherFromTokens( tokens.slice( i, j ) ), + j < len && matcherFromTokens( ( tokens = tokens.slice( j ) ) ), + j < len && toSelector( tokens ) + ); + } + matchers.push( matcher ); + } + } + + return elementMatcher( matchers ); } - // Match html or make sure no context is specified for #id - if ( match && (match[1] || !context) ) { + function matcherFromGroupMatchers( elementMatchers, setMatchers ) { + var bySet = setMatchers.length > 0, + byElement = elementMatchers.length > 0, + superMatcher = function( seed, context, xml, results, outermost ) { + var elem, j, matcher, + matchedCount = 0, + i = "0", + unmatched = seed && [], + setMatched = [], + contextBackup = outermostContext, - // HANDLE: $(html) -> $(array) - if ( match[1] ) { - context = context instanceof jQuery ? context[0] : context; + // We must always have either seed elements or outermost context + elems = seed || byElement && Expr.find[ "TAG" ]( "*", outermost ), - // scripts is true for back-compat - // Intentionally let the error be thrown if parseHTML is not present - jQuery.merge( this, jQuery.parseHTML( - match[1], - context && context.nodeType ? context.ownerDocument || context : document, - true - ) ); + // Use integer dirruns iff this is the outermost matcher + dirrunsUnique = ( dirruns += contextBackup == null ? 1 : Math.random() || 0.1 ), + len = elems.length; - // HANDLE: $(html, props) - if ( rsingleTag.test( match[1] ) && jQuery.isPlainObject( context ) ) { - for ( match in context ) { - // Properties of context are called as methods if possible - if ( jQuery.isFunction( this[ match ] ) ) { - this[ match ]( context[ match ] ); + if ( outermost ) { - // ...and otherwise set as attributes - } else { - this.attr( match, context[ match ] ); + // Support: IE 11+, Edge 17 - 18+ + // IE/Edge sometimes throw a "Permission denied" error when strict-comparing + // two documents; shallow comparisons work. + // eslint-disable-next-line eqeqeq + outermostContext = context == document || context || outermost; + } + + // Add elements passing elementMatchers directly to results + // Support: IE<9, Safari + // Tolerate NodeList properties (IE: "length"; Safari: ) matching elements by id + for ( ; i !== len && ( elem = elems[ i ] ) != null; i++ ) { + if ( byElement && elem ) { + j = 0; + + // Support: IE 11+, Edge 17 - 18+ + // IE/Edge sometimes throw a "Permission denied" error when strict-comparing + // two documents; shallow comparisons work. + // eslint-disable-next-line eqeqeq + if ( !context && elem.ownerDocument != document ) { + setDocument( elem ); + xml = !documentIsHTML; + } + while ( ( matcher = elementMatchers[ j++ ] ) ) { + if ( matcher( elem, context || document, xml ) ) { + results.push( elem ); + break; + } + } + if ( outermost ) { + dirruns = dirrunsUnique; + } + } + + // Track unmatched elements for set filters + if ( bySet ) { + + // They will have gone through all possible matchers + if ( ( elem = !matcher && elem ) ) { + matchedCount--; + } + + // Lengthen the array for every element, matched or not + if ( seed ) { + unmatched.push( elem ); + } + } + } + + // `i` is now the count of elements visited above, and adding it to `matchedCount` + // makes the latter nonnegative. + matchedCount += i; + + // Apply set filters to unmatched elements + // NOTE: This can be skipped if there are no unmatched elements (i.e., `matchedCount` + // equals `i`), unless we didn't visit _any_ elements in the above loop because we have + // no element matchers and no seed. + // Incrementing an initially-string "0" `i` allows `i` to remain a string only in that + // case, which will result in a "00" `matchedCount` that differs from `i` but is also + // numerically zero. + if ( bySet && i !== matchedCount ) { + j = 0; + while ( ( matcher = setMatchers[ j++ ] ) ) { + matcher( unmatched, setMatched, context, xml ); + } + + if ( seed ) { + + // Reintegrate element matches to eliminate the need for sorting + if ( matchedCount > 0 ) { + while ( i-- ) { + if ( !( unmatched[ i ] || setMatched[ i ] ) ) { + setMatched[ i ] = pop.call( results ); + } + } + } + + // Discard index placeholder values to get only actual matches + setMatched = condense( setMatched ); + } + + // Add matches to results + push.apply( results, setMatched ); + + // Seedless set matches succeeding multiple successful matchers stipulate sorting + if ( outermost && !seed && setMatched.length > 0 && + ( matchedCount + setMatchers.length ) > 1 ) { + + Sizzle.uniqueSort( results ); } } + + // Override manipulation of globals by nested matchers + if ( outermost ) { + dirruns = dirrunsUnique; + outermostContext = contextBackup; + } + + return unmatched; + }; + + return bySet ? + markFunction( superMatcher ) : + superMatcher; + } + + compile = Sizzle.compile = function( selector, match /* Internal Use Only */ ) { + var i, + setMatchers = [], + elementMatchers = [], + cached = compilerCache[ selector + " " ]; + + if ( !cached ) { + + // Generate a function of recursive functions that can be used to check each element + if ( !match ) { + match = tokenize( selector ); + } + i = match.length; + while ( i-- ) { + cached = matcherFromTokens( match[ i ] ); + if ( cached[ expando ] ) { + setMatchers.push( cached ); + } else { + elementMatchers.push( cached ); + } } - return this; + // Cache the compiled function + cached = compilerCache( + selector, + matcherFromGroupMatchers( elementMatchers, setMatchers ) + ); - // HANDLE: $(#id) - } else { - elem = document.getElementById( match[2] ); - - // Check parentNode to catch when Blackberry 4.6 returns - // nodes that are no longer in the document #6963 - if ( elem && elem.parentNode ) { - // Handle the case where IE and Opera return items - // by name instead of ID - if ( elem.id !== match[2] ) { - return rootjQuery.find( selector ); + // Save selector and tokenization + cached.selector = selector; + } + return cached; + }; + + /** + * A low-level selection function that works with Sizzle's compiled + * selector functions + * @param {String|Function} selector A selector or a pre-compiled + * selector function built with Sizzle.compile + * @param {Element} context + * @param {Array} [results] + * @param {Array} [seed] A set of elements to match against + */ + select = Sizzle.select = function( selector, context, results, seed ) { + var i, tokens, token, type, find, + compiled = typeof selector === "function" && selector, + match = !seed && tokenize( ( selector = compiled.selector || selector ) ); + + results = results || []; + + // Try to minimize operations if there is only one selector in the list and no seed + // (the latter of which guarantees us context) + if ( match.length === 1 ) { + + // Reduce context if the leading compound selector is an ID + tokens = match[ 0 ] = match[ 0 ].slice( 0 ); + if ( tokens.length > 2 && ( token = tokens[ 0 ] ).type === "ID" && + context.nodeType === 9 && documentIsHTML && Expr.relative[ tokens[ 1 ].type ] ) { + + context = ( Expr.find[ "ID" ]( token.matches[ 0 ] + .replace( runescape, funescape ), context ) || [] )[ 0 ]; + if ( !context ) { + return results; + + // Precompiled matchers will still verify ancestry, so step up a level + } else if ( compiled ) { + context = context.parentNode; } - // Otherwise, we inject the element directly into the jQuery object - this.length = 1; - this[0] = elem; + selector = selector.slice( tokens.shift().value.length ); } - this.context = document; - this.selector = selector; - return this; + // Fetch a seed set for right-to-left matching + i = matchExpr[ "needsContext" ].test( selector ) ? 0 : tokens.length; + while ( i-- ) { + token = tokens[ i ]; + + // Abort if we hit a combinator + if ( Expr.relative[ ( type = token.type ) ] ) { + break; + } + if ( ( find = Expr.find[ type ] ) ) { + + // Search, expanding context for leading sibling combinators + if ( ( seed = find( + token.matches[ 0 ].replace( runescape, funescape ), + rsibling.test( tokens[ 0 ].type ) && testContext( context.parentNode ) || + context + ) ) ) { + + // If seed is empty or no tokens remain, we can return early + tokens.splice( i, 1 ); + selector = seed.length && toSelector( tokens ); + if ( !selector ) { + push.apply( results, seed ); + return results; + } + + break; + } + } + } } - // HANDLE: $(expr, $(...)) - } else if ( !context || context.jquery ) { - return ( context || rootjQuery ).find( selector ); + // Compile and execute a filtering function if one is not provided + // Provide `match` to avoid retokenization if we modified the selector above + ( compiled || compile( selector, match ) )( + seed, + context, + !documentIsHTML, + results, + !context || rsibling.test( selector ) && testContext( context.parentNode ) || context + ); + return results; + }; - // HANDLE: $(expr, context) - // (which is just equivalent to: $(context).find(expr) - } else { - return this.constructor( context ).find( selector ); +// One-time assignments + +// Sort stability + support.sortStable = expando.split( "" ).sort( sortOrder ).join( "" ) === expando; + +// Support: Chrome 14-35+ +// Always assume duplicates if they aren't passed to the comparison function + support.detectDuplicates = !!hasDuplicate; + +// Initialize against the default document + setDocument(); + +// Support: Webkit<537.32 - Safari 6.0.3/Chrome 25 (fixed in Chrome 27) +// Detached nodes confoundingly follow *each other* + support.sortDetached = assert( function( el ) { + + // Should return 1, but returns 4 (following) + return el.compareDocumentPosition( document.createElement( "fieldset" ) ) & 1; + } ); + +// Support: IE<8 +// Prevent attribute/property "interpolation" +// https://msdn.microsoft.com/en-us/library/ms536429%28VS.85%29.aspx + if ( !assert( function( el ) { + el.innerHTML = ""; + return el.firstChild.getAttribute( "href" ) === "#"; + } ) ) { + addHandle( "type|href|height|width", function( elem, name, isXML ) { + if ( !isXML ) { + return elem.getAttribute( name, name.toLowerCase() === "type" ? 1 : 2 ); + } + } ); } - // HANDLE: $(DOMElement) - } else if ( selector.nodeType ) { - this.context = this[0] = selector; - this.length = 1; - return this; +// Support: IE<9 +// Use defaultValue in place of getAttribute("value") + if ( !support.attributes || !assert( function( el ) { + el.innerHTML = ""; + el.firstChild.setAttribute( "value", "" ); + return el.firstChild.getAttribute( "value" ) === ""; + } ) ) { + addHandle( "value", function( elem, _name, isXML ) { + if ( !isXML && elem.nodeName.toLowerCase() === "input" ) { + return elem.defaultValue; + } + } ); + } - // HANDLE: $(function) - // Shortcut for document ready - } else if ( jQuery.isFunction( selector ) ) { - return typeof rootjQuery.ready !== "undefined" ? - rootjQuery.ready( selector ) : - // Execute immediately if ready is not present - selector( jQuery ); - } +// Support: IE<9 +// Use getAttributeNode to fetch booleans when getAttribute lies + if ( !assert( function( el ) { + return el.getAttribute( "disabled" ) == null; + } ) ) { + addHandle( booleans, function( elem, name, isXML ) { + var val; + if ( !isXML ) { + return elem[ name ] === true ? name.toLowerCase() : + ( val = elem.getAttributeNode( name ) ) && val.specified ? + val.value : + null; + } + } ); + } - if ( selector.selector !== undefined ) { - this.selector = selector.selector; - this.context = selector.context; - } + return Sizzle; - return jQuery.makeArray( selector, this ); - }; + } )( window ); -// Give the init function the jQuery prototype for later instantiation -init.prototype = jQuery.fn; -// Initialize central reference -rootjQuery = jQuery( document ); + jQuery.find = Sizzle; + jQuery.expr = Sizzle.selectors; -var rparentsprev = /^(?:parents|prev(?:Until|All))/, - // methods guaranteed to produce a unique set when starting from a unique set - guaranteedUnique = { - children: true, - contents: true, - next: true, - prev: true - }; +// Deprecated + jQuery.expr[ ":" ] = jQuery.expr.pseudos; + jQuery.uniqueSort = jQuery.unique = Sizzle.uniqueSort; + jQuery.text = Sizzle.getText; + jQuery.isXMLDoc = Sizzle.isXML; + jQuery.contains = Sizzle.contains; + jQuery.escapeSelector = Sizzle.escape; -jQuery.extend({ - dir: function( elem, dir, until ) { + + + + var dir = function( elem, dir, until ) { var matched = [], - cur = elem[ dir ]; + truncate = until !== undefined; - while ( cur && cur.nodeType !== 9 && (until === undefined || cur.nodeType !== 1 || !jQuery( cur ).is( until )) ) { - if ( cur.nodeType === 1 ) { - matched.push( cur ); + while ( ( elem = elem[ dir ] ) && elem.nodeType !== 9 ) { + if ( elem.nodeType === 1 ) { + if ( truncate && jQuery( elem ).is( until ) ) { + break; + } + matched.push( elem ); } - cur = cur[dir]; } return matched; - }, + }; + - sibling: function( n, elem ) { - var r = []; + var siblings = function( n, elem ) { + var matched = []; for ( ; n; n = n.nextSibling ) { if ( n.nodeType === 1 && n !== elem ) { - r.push( n ); + matched.push( n ); } } - return r; - } -}); + return matched; + }; -jQuery.fn.extend({ - has: function( target ) { - var i, - targets = jQuery( target, this ), - len = targets.length; - return this.filter(function() { - for ( i = 0; i < len; i++ ) { - if ( jQuery.contains( this, targets[i] ) ) { - return true; - } - } - }); - }, + var rneedsContext = jQuery.expr.match.needsContext; - closest: function( selectors, context ) { - var cur, - i = 0, - l = this.length, - matched = [], - pos = rneedsContext.test( selectors ) || typeof selectors !== "string" ? - jQuery( selectors, context || this.context ) : - 0; - for ( ; i < l; i++ ) { - for ( cur = this[i]; cur && cur !== context; cur = cur.parentNode ) { - // Always skip document fragments - if ( cur.nodeType < 11 && (pos ? - pos.index(cur) > -1 : - // Don't pass non-elements to Sizzle - cur.nodeType === 1 && - jQuery.find.matchesSelector(cur, selectors)) ) { + function nodeName( elem, name ) { - matched.push( cur ); - break; - } - } - } + return elem.nodeName && elem.nodeName.toLowerCase() === name.toLowerCase(); - return this.pushStack( matched.length > 1 ? jQuery.unique( matched ) : matched ); - }, + } + var rsingleTag = ( /^<([a-z][^\/\0>:\x20\t\r\n\f]*)[\x20\t\r\n\f]*\/?>(?:<\/\1>|)$/i ); - // Determine the position of an element within - // the matched set of elements - index: function( elem ) { - // No argument, return index in parent - if ( !elem ) { - return ( this[0] && this[0].parentNode ) ? this.first().prevAll().length : -1; - } - // index in selector - if ( typeof elem === "string" ) { - return jQuery.inArray( this[0], jQuery( elem ) ); +// Implement the identical functionality for filter and not + function winnow( elements, qualifier, not ) { + if ( isFunction( qualifier ) ) { + return jQuery.grep( elements, function( elem, i ) { + return !!qualifier.call( elem, i, elem ) !== not; + } ); } - // Locate the position of the desired element - return jQuery.inArray( - // If it receives a jQuery object, the first element is used - elem.jquery ? elem[0] : elem, this ); - }, + // Single element + if ( qualifier.nodeType ) { + return jQuery.grep( elements, function( elem ) { + return ( elem === qualifier ) !== not; + } ); + } - add: function( selector, context ) { - return this.pushStack( - jQuery.unique( - jQuery.merge( this.get(), jQuery( selector, context ) ) - ) - ); - }, + // Arraylike of elements (jQuery, arguments, Array) + if ( typeof qualifier !== "string" ) { + return jQuery.grep( elements, function( elem ) { + return ( indexOf.call( qualifier, elem ) > -1 ) !== not; + } ); + } - addBack: function( selector ) { - return this.add( selector == null ? - this.prevObject : this.prevObject.filter(selector) - ); - } -}); - -function sibling( cur, dir ) { - do { - cur = cur[ dir ]; - } while ( cur && cur.nodeType !== 1 ); - - return cur; -} - -jQuery.each({ - parent: function( elem ) { - var parent = elem.parentNode; - return parent && parent.nodeType !== 11 ? parent : null; - }, - parents: function( elem ) { - return jQuery.dir( elem, "parentNode" ); - }, - parentsUntil: function( elem, i, until ) { - return jQuery.dir( elem, "parentNode", until ); - }, - next: function( elem ) { - return sibling( elem, "nextSibling" ); - }, - prev: function( elem ) { - return sibling( elem, "previousSibling" ); - }, - nextAll: function( elem ) { - return jQuery.dir( elem, "nextSibling" ); - }, - prevAll: function( elem ) { - return jQuery.dir( elem, "previousSibling" ); - }, - nextUntil: function( elem, i, until ) { - return jQuery.dir( elem, "nextSibling", until ); - }, - prevUntil: function( elem, i, until ) { - return jQuery.dir( elem, "previousSibling", until ); - }, - siblings: function( elem ) { - return jQuery.sibling( ( elem.parentNode || {} ).firstChild, elem ); - }, - children: function( elem ) { - return jQuery.sibling( elem.firstChild ); - }, - contents: function( elem ) { - return jQuery.nodeName( elem, "iframe" ) ? - elem.contentDocument || elem.contentWindow.document : - jQuery.merge( [], elem.childNodes ); + // Filtered directly for both simple and complex selectors + return jQuery.filter( qualifier, elements, not ); } -}, function( name, fn ) { - jQuery.fn[ name ] = function( until, selector ) { - var ret = jQuery.map( this, fn, until ); - if ( name.slice( -5 ) !== "Until" ) { - selector = until; + jQuery.filter = function( expr, elems, not ) { + var elem = elems[ 0 ]; + + if ( not ) { + expr = ":not(" + expr + ")"; } - if ( selector && typeof selector === "string" ) { - ret = jQuery.filter( selector, ret ); + if ( elems.length === 1 && elem.nodeType === 1 ) { + return jQuery.find.matchesSelector( elem, expr ) ? [ elem ] : []; } - if ( this.length > 1 ) { - // Remove duplicates - if ( !guaranteedUnique[ name ] ) { - ret = jQuery.unique( ret ); + return jQuery.find.matches( expr, jQuery.grep( elems, function( elem ) { + return elem.nodeType === 1; + } ) ); + }; + + jQuery.fn.extend( { + find: function( selector ) { + var i, ret, + len = this.length, + self = this; + + if ( typeof selector !== "string" ) { + return this.pushStack( jQuery( selector ).filter( function() { + for ( i = 0; i < len; i++ ) { + if ( jQuery.contains( self[ i ], this ) ) { + return true; + } + } + } ) ); } - // Reverse order for parents* and prev-derivatives - if ( rparentsprev.test( name ) ) { - ret = ret.reverse(); + ret = this.pushStack( [] ); + + for ( i = 0; i < len; i++ ) { + jQuery.find( selector, self[ i ], ret ); } + + return len > 1 ? jQuery.uniqueSort( ret ) : ret; + }, + filter: function( selector ) { + return this.pushStack( winnow( this, selector || [], false ) ); + }, + not: function( selector ) { + return this.pushStack( winnow( this, selector || [], true ) ); + }, + is: function( selector ) { + return !!winnow( + this, + + // If this is a positional/relative selector, check membership in the returned set + // so $("p:first").is("p:last") won't return true for a doc with two "p". + typeof selector === "string" && rneedsContext.test( selector ) ? + jQuery( selector ) : + selector || [], + false + ).length; } + } ); - return this.pushStack( ret ); - }; -}); -var rnotwhite = (/\S+/g); +// Initialize a jQuery object -// String to Object options format cache -var optionsCache = {}; +// A central reference to the root jQuery(document) + var rootjQuery, -// Convert String-formatted options into Object-formatted ones and store in cache -function createOptions( options ) { - var object = optionsCache[ options ] = {}; - jQuery.each( options.match( rnotwhite ) || [], function( _, flag ) { - object[ flag ] = true; - }); - return object; -} + // A simple way to check for HTML strings + // Prioritize #id over to avoid XSS via location.hash (#9521) + // Strict HTML recognition (#11290: must start with <) + // Shortcut simple #id case for speed + rquickExpr = /^(?:\s*(<[\w\W]+>)[^>]*|#([\w-]+))$/, -/* - * Create a callback list using the following parameters: - * - * options: an optional list of space-separated options that will change how - * the callback list behaves or a more traditional option object - * - * By default a callback list will act like an event callback list and can be - * "fired" multiple times. - * - * Possible options: - * - * once: will ensure the callback list can only be fired once (like a Deferred) - * - * memory: will keep track of previous values and will call any callback added - * after the list has been fired right away with the latest "memorized" - * values (like a Deferred) - * - * unique: will ensure a callback can only be added once (no duplicate in the list) - * - * stopOnFalse: interrupt callings when a callback returns false - * - */ -jQuery.Callbacks = function( options ) { - - // Convert options from String-formatted to Object-formatted if needed - // (we check in cache first) - options = typeof options === "string" ? - ( optionsCache[ options ] || createOptions( options ) ) : - jQuery.extend( {}, options ); - - var // Flag to know if list is currently firing - firing, - // Last fire value (for non-forgettable lists) - memory, - // Flag to know if list was already fired - fired, - // End of the loop when firing - firingLength, - // Index of currently firing callback (modified by remove if needed) - firingIndex, - // First callback to fire (used internally by add and fireWith) - firingStart, - // Actual callback list - list = [], - // Stack of fire calls for repeatable lists - stack = !options.once && [], - // Fire callbacks - fire = function( data ) { - memory = options.memory && data; - fired = true; - firingIndex = firingStart || 0; - firingStart = 0; - firingLength = list.length; - firing = true; - for ( ; list && firingIndex < firingLength; firingIndex++ ) { - if ( list[ firingIndex ].apply( data[ 0 ], data[ 1 ] ) === false && options.stopOnFalse ) { - memory = false; // To prevent further calls using add - break; - } + init = jQuery.fn.init = function( selector, context, root ) { + var match, elem; + + // HANDLE: $(""), $(null), $(undefined), $(false) + if ( !selector ) { + return this; } - firing = false; - if ( list ) { - if ( stack ) { - if ( stack.length ) { - fire( stack.shift() ); - } - } else if ( memory ) { - list = []; + + // Method init() accepts an alternate rootjQuery + // so migrate can support jQuery.sub (gh-2101) + root = root || rootjQuery; + + // Handle HTML strings + if ( typeof selector === "string" ) { + if ( selector[ 0 ] === "<" && + selector[ selector.length - 1 ] === ">" && + selector.length >= 3 ) { + + // Assume that strings that start and end with <> are HTML and skip the regex check + match = [ null, selector, null ]; + } else { - self.disable(); + match = rquickExpr.exec( selector ); } - } - }, - // Actual Callbacks object - self = { - // Add a callback or a collection of callbacks to the list - add: function() { - if ( list ) { - // First, we save the current length - var start = list.length; - (function add( args ) { - jQuery.each( args, function( _, arg ) { - var type = jQuery.type( arg ); - if ( type === "function" ) { - if ( !options.unique || !self.has( arg ) ) { - list.push( arg ); - } - } else if ( arg && arg.length && type !== "string" ) { - // Inspect recursively - add( arg ); - } - }); - })( arguments ); - // Do we need to add the callbacks to the - // current firing batch? - if ( firing ) { - firingLength = list.length; - // With memory, if we're not firing then - // we should call right away - } else if ( memory ) { - firingStart = start; - fire( memory ); - } - } - return this; - }, - // Remove a callback from the list - remove: function() { - if ( list ) { - jQuery.each( arguments, function( _, arg ) { - var index; - while ( ( index = jQuery.inArray( arg, list, index ) ) > -1 ) { - list.splice( index, 1 ); - // Handle firing indexes - if ( firing ) { - if ( index <= firingLength ) { - firingLength--; - } - if ( index <= firingIndex ) { - firingIndex--; + + // Match html or make sure no context is specified for #id + if ( match && ( match[ 1 ] || !context ) ) { + + // HANDLE: $(html) -> $(array) + if ( match[ 1 ] ) { + context = context instanceof jQuery ? context[ 0 ] : context; + + // Option to run scripts is true for back-compat + // Intentionally let the error be thrown if parseHTML is not present + jQuery.merge( this, jQuery.parseHTML( + match[ 1 ], + context && context.nodeType ? context.ownerDocument || context : document, + true + ) ); + + // HANDLE: $(html, props) + if ( rsingleTag.test( match[ 1 ] ) && jQuery.isPlainObject( context ) ) { + for ( match in context ) { + + // Properties of context are called as methods if possible + if ( isFunction( this[ match ] ) ) { + this[ match ]( context[ match ] ); + + // ...and otherwise set as attributes + } else { + this.attr( match, context[ match ] ); } } } - }); - } - return this; - }, - // Check if a given callback is in the list. - // If no argument is given, return whether or not list has callbacks attached. - has: function( fn ) { - return fn ? jQuery.inArray( fn, list ) > -1 : !!( list && list.length ); - }, - // Remove all callbacks from the list - empty: function() { - list = []; - firingLength = 0; - return this; - }, - // Have the list do nothing anymore - disable: function() { - list = stack = memory = undefined; - return this; - }, - // Is it disabled? - disabled: function() { - return !list; - }, - // Lock the list in its current state - lock: function() { - stack = undefined; - if ( !memory ) { - self.disable(); - } - return this; - }, - // Is it locked? - locked: function() { - return !stack; - }, - // Call all callbacks with the given context and arguments - fireWith: function( context, args ) { - if ( list && ( !fired || stack ) ) { - args = args || []; - args = [ context, args.slice ? args.slice() : args ]; - if ( firing ) { - stack.push( args ); + + return this; + + // HANDLE: $(#id) } else { - fire( args ); + elem = document.getElementById( match[ 2 ] ); + + if ( elem ) { + + // Inject the element directly into the jQuery object + this[ 0 ] = elem; + this.length = 1; + } + return this; } + + // HANDLE: $(expr, $(...)) + } else if ( !context || context.jquery ) { + return ( context || root ).find( selector ); + + // HANDLE: $(expr, context) + // (which is just equivalent to: $(context).find(expr) + } else { + return this.constructor( context ).find( selector ); } + + // HANDLE: $(DOMElement) + } else if ( selector.nodeType ) { + this[ 0 ] = selector; + this.length = 1; return this; - }, - // Call all the callbacks with the given arguments - fire: function() { - self.fireWith( this, arguments ); - return this; - }, - // To know if the callbacks have already been called at least once - fired: function() { - return !!fired; + + // HANDLE: $(function) + // Shortcut for document ready + } else if ( isFunction( selector ) ) { + return root.ready !== undefined ? + root.ready( selector ) : + + // Execute immediately if ready is not present + selector( jQuery ); } - }; - return self; -}; + return jQuery.makeArray( selector, this ); + }; +// Give the init function the jQuery prototype for later instantiation + init.prototype = jQuery.fn; -jQuery.extend({ +// Initialize central reference + rootjQuery = jQuery( document ); - Deferred: function( func ) { - var tuples = [ - // action, add listener, listener list, final state - [ "resolve", "done", jQuery.Callbacks("once memory"), "resolved" ], - [ "reject", "fail", jQuery.Callbacks("once memory"), "rejected" ], - [ "notify", "progress", jQuery.Callbacks("memory") ] - ], - state = "pending", - promise = { - state: function() { - return state; - }, - always: function() { - deferred.done( arguments ).fail( arguments ); - return this; - }, - then: function( /* fnDone, fnFail, fnProgress */ ) { - var fns = arguments; - return jQuery.Deferred(function( newDefer ) { - jQuery.each( tuples, function( i, tuple ) { - var fn = jQuery.isFunction( fns[ i ] ) && fns[ i ]; - // deferred[ done | fail | progress ] for forwarding actions to newDefer - deferred[ tuple[1] ](function() { - var returned = fn && fn.apply( this, arguments ); - if ( returned && jQuery.isFunction( returned.promise ) ) { - returned.promise() - .done( newDefer.resolve ) - .fail( newDefer.reject ) - .progress( newDefer.notify ); - } else { - newDefer[ tuple[ 0 ] + "With" ]( this === promise ? newDefer.promise() : this, fn ? [ returned ] : arguments ); - } - }); - }); - fns = null; - }).promise(); - }, - // Get a promise for this deferred - // If obj is provided, the promise aspect is added to the object - promise: function( obj ) { - return obj != null ? jQuery.extend( obj, promise ) : promise; - } - }, - deferred = {}; - // Keep pipe for back-compat - promise.pipe = promise.then; + var rparentsprev = /^(?:parents|prev(?:Until|All))/, - // Add list-specific methods - jQuery.each( tuples, function( i, tuple ) { - var list = tuple[ 2 ], - stateString = tuple[ 3 ]; + // Methods guaranteed to produce a unique set when starting from a unique set + guaranteedUnique = { + children: true, + contents: true, + next: true, + prev: true + }; - // promise[ done | fail | progress ] = list.add - promise[ tuple[1] ] = list.add; + jQuery.fn.extend( { + has: function( target ) { + var targets = jQuery( target, this ), + l = targets.length; - // Handle state - if ( stateString ) { - list.add(function() { - // state = [ resolved | rejected ] - state = stateString; + return this.filter( function() { + var i = 0; + for ( ; i < l; i++ ) { + if ( jQuery.contains( this, targets[ i ] ) ) { + return true; + } + } + } ); + }, - // [ reject_list | resolve_list ].disable; progress_list.lock - }, tuples[ i ^ 1 ][ 2 ].disable, tuples[ 2 ][ 2 ].lock ); - } + closest: function( selectors, context ) { + var cur, + i = 0, + l = this.length, + matched = [], + targets = typeof selectors !== "string" && jQuery( selectors ); - // deferred[ resolve | reject | notify ] - deferred[ tuple[0] ] = function() { - deferred[ tuple[0] + "With" ]( this === deferred ? promise : this, arguments ); - return this; - }; - deferred[ tuple[0] + "With" ] = list.fireWith; - }); + // Positional selectors never match, since there's no _selection_ context + if ( !rneedsContext.test( selectors ) ) { + for ( ; i < l; i++ ) { + for ( cur = this[ i ]; cur && cur !== context; cur = cur.parentNode ) { - // Make the deferred a promise - promise.promise( deferred ); + // Always skip document fragments + if ( cur.nodeType < 11 && ( targets ? + targets.index( cur ) > -1 : - // Call given func if any - if ( func ) { - func.call( deferred, deferred ); - } + // Don't pass non-elements to Sizzle + cur.nodeType === 1 && + jQuery.find.matchesSelector( cur, selectors ) ) ) { - // All done! - return deferred; - }, + matched.push( cur ); + break; + } + } + } + } - // Deferred helper - when: function( subordinate /* , ..., subordinateN */ ) { - var i = 0, - resolveValues = slice.call( arguments ), - length = resolveValues.length, + return this.pushStack( matched.length > 1 ? jQuery.uniqueSort( matched ) : matched ); + }, - // the count of uncompleted subordinates - remaining = length !== 1 || ( subordinate && jQuery.isFunction( subordinate.promise ) ) ? length : 0, + // Determine the position of an element within the set + index: function( elem ) { - // the master Deferred. If resolveValues consist of only a single Deferred, just use that. - deferred = remaining === 1 ? subordinate : jQuery.Deferred(), + // No argument, return index in parent + if ( !elem ) { + return ( this[ 0 ] && this[ 0 ].parentNode ) ? this.first().prevAll().length : -1; + } - // Update function for both resolve and progress values - updateFunc = function( i, contexts, values ) { - return function( value ) { - contexts[ i ] = this; - values[ i ] = arguments.length > 1 ? slice.call( arguments ) : value; - if ( values === progressValues ) { - deferred.notifyWith( contexts, values ); + // Index in selector + if ( typeof elem === "string" ) { + return indexOf.call( jQuery( elem ), this[ 0 ] ); + } - } else if ( !(--remaining) ) { - deferred.resolveWith( contexts, values ); - } - }; - }, + // Locate the position of the desired element + return indexOf.call( this, - progressValues, progressContexts, resolveContexts; + // If it receives a jQuery object, the first element is used + elem.jquery ? elem[ 0 ] : elem + ); + }, - // add listeners to Deferred subordinates; treat others as resolved - if ( length > 1 ) { - progressValues = new Array( length ); - progressContexts = new Array( length ); - resolveContexts = new Array( length ); - for ( ; i < length; i++ ) { - if ( resolveValues[ i ] && jQuery.isFunction( resolveValues[ i ].promise ) ) { - resolveValues[ i ].promise() - .done( updateFunc( i, resolveContexts, resolveValues ) ) - .fail( deferred.reject ) - .progress( updateFunc( i, progressContexts, progressValues ) ); - } else { - --remaining; - } - } - } + add: function( selector, context ) { + return this.pushStack( + jQuery.uniqueSort( + jQuery.merge( this.get(), jQuery( selector, context ) ) + ) + ); + }, - // if we're not waiting on anything, resolve the master - if ( !remaining ) { - deferred.resolveWith( resolveContexts, resolveValues ); + addBack: function( selector ) { + return this.add( selector == null ? + this.prevObject : this.prevObject.filter( selector ) + ); } + } ); - return deferred.promise(); + function sibling( cur, dir ) { + while ( ( cur = cur[ dir ] ) && cur.nodeType !== 1 ) {} + return cur; } -}); - - -// The deferred used on DOM ready -var readyList; -jQuery.fn.ready = function( fn ) { - // Add the callback - jQuery.ready.promise().done( fn ); + jQuery.each( { + parent: function( elem ) { + var parent = elem.parentNode; + return parent && parent.nodeType !== 11 ? parent : null; + }, + parents: function( elem ) { + return dir( elem, "parentNode" ); + }, + parentsUntil: function( elem, _i, until ) { + return dir( elem, "parentNode", until ); + }, + next: function( elem ) { + return sibling( elem, "nextSibling" ); + }, + prev: function( elem ) { + return sibling( elem, "previousSibling" ); + }, + nextAll: function( elem ) { + return dir( elem, "nextSibling" ); + }, + prevAll: function( elem ) { + return dir( elem, "previousSibling" ); + }, + nextUntil: function( elem, _i, until ) { + return dir( elem, "nextSibling", until ); + }, + prevUntil: function( elem, _i, until ) { + return dir( elem, "previousSibling", until ); + }, + siblings: function( elem ) { + return siblings( ( elem.parentNode || {} ).firstChild, elem ); + }, + children: function( elem ) { + return siblings( elem.firstChild ); + }, + contents: function( elem ) { + if ( elem.contentDocument != null && - return this; -}; + // Support: IE 11+ + // elements with no `data` attribute has an object + // `contentDocument` with a `null` prototype. + getProto( elem.contentDocument ) ) { -jQuery.extend({ - // Is the DOM ready to be used? Set to true once it occurs. - isReady: false, + return elem.contentDocument; + } - // A counter to track how many items to wait for before - // the ready event fires. See #6781 - readyWait: 1, + // Support: IE 9 - 11 only, iOS 7 only, Android Browser <=4.3 only + // Treat the template element as a regular one in browsers that + // don't support it. + if ( nodeName( elem, "template" ) ) { + elem = elem.content || elem; + } - // Hold (or release) the ready event - holdReady: function( hold ) { - if ( hold ) { - jQuery.readyWait++; - } else { - jQuery.ready( true ); + return jQuery.merge( [], elem.childNodes ); } - }, + }, function( name, fn ) { + jQuery.fn[ name ] = function( until, selector ) { + var matched = jQuery.map( this, fn, until ); - // Handle when the DOM is ready - ready: function( wait ) { + if ( name.slice( -5 ) !== "Until" ) { + selector = until; + } - // Abort if there are pending holds or we're already ready - if ( wait === true ? --jQuery.readyWait : jQuery.isReady ) { - return; - } + if ( selector && typeof selector === "string" ) { + matched = jQuery.filter( selector, matched ); + } - // Make sure body exists, at least, in case IE gets a little overzealous (ticket #5443). - if ( !document.body ) { - return setTimeout( jQuery.ready ); - } + if ( this.length > 1 ) { - // Remember that the DOM is ready - jQuery.isReady = true; + // Remove duplicates + if ( !guaranteedUnique[ name ] ) { + jQuery.uniqueSort( matched ); + } - // If a normal DOM Ready event fired, decrement, and wait if need be - if ( wait !== true && --jQuery.readyWait > 0 ) { - return; - } + // Reverse order for parents* and prev-derivatives + if ( rparentsprev.test( name ) ) { + matched.reverse(); + } + } - // If there are functions bound, to execute - readyList.resolveWith( document, [ jQuery ] ); + return this.pushStack( matched ); + }; + } ); + var rnothtmlwhite = ( /[^\x20\t\r\n\f]+/g ); - // Trigger any bound ready events - if ( jQuery.fn.triggerHandler ) { - jQuery( document ).triggerHandler( "ready" ); - jQuery( document ).off( "ready" ); - } - } -}); -/** - * Clean-up method for dom ready events - */ -function detach() { - if ( document.addEventListener ) { - document.removeEventListener( "DOMContentLoaded", completed, false ); - window.removeEventListener( "load", completed, false ); - } else { - document.detachEvent( "onreadystatechange", completed ); - window.detachEvent( "onload", completed ); +// Convert String-formatted options into Object-formatted ones + function createOptions( options ) { + var object = {}; + jQuery.each( options.match( rnothtmlwhite ) || [], function( _, flag ) { + object[ flag ] = true; + } ); + return object; } -} -/** - * The ready event handler and self cleanup method + /* + * Create a callback list using the following parameters: + * + * options: an optional list of space-separated options that will change how + * the callback list behaves or a more traditional option object + * + * By default a callback list will act like an event callback list and can be + * "fired" multiple times. + * + * Possible options: + * + * once: will ensure the callback list can only be fired once (like a Deferred) + * + * memory: will keep track of previous values and will call any callback added + * after the list has been fired right away with the latest "memorized" + * values (like a Deferred) + * + * unique: will ensure a callback can only be added once (no duplicate in the list) + * + * stopOnFalse: interrupt callings when a callback returns false + * */ -function completed() { - // readyState === "complete" is good enough for us to call the dom ready in oldIE - if ( document.addEventListener || event.type === "load" || document.readyState === "complete" ) { - detach(); - jQuery.ready(); - } -} + jQuery.Callbacks = function( options ) { -jQuery.ready.promise = function( obj ) { - if ( !readyList ) { + // Convert options from String-formatted to Object-formatted if needed + // (we check in cache first) + options = typeof options === "string" ? + createOptions( options ) : + jQuery.extend( {}, options ); - readyList = jQuery.Deferred(); + var // Flag to know if list is currently firing + firing, - // Catch cases where $(document).ready() is called after the browser event has already occurred. - // we once tried to use readyState "interactive" here, but it caused issues like the one - // discovered by ChrisS here: http://bugs.jquery.com/ticket/12282#comment:15 - if ( document.readyState === "complete" ) { - // Handle it asynchronously to allow scripts the opportunity to delay ready - setTimeout( jQuery.ready ); + // Last fire value for non-forgettable lists + memory, - // Standards-based browsers support DOMContentLoaded - } else if ( document.addEventListener ) { - // Use the handy event callback - document.addEventListener( "DOMContentLoaded", completed, false ); + // Flag to know if list was already fired + fired, - // A fallback to window.onload, that will always work - window.addEventListener( "load", completed, false ); + // Flag to prevent firing + locked, - // If IE event model is used - } else { - // Ensure firing before onload, maybe late but safe also for iframes - document.attachEvent( "onreadystatechange", completed ); + // Actual callback list + list = [], - // A fallback to window.onload, that will always work - window.attachEvent( "onload", completed ); + // Queue of execution data for repeatable lists + queue = [], - // If IE and not a frame - // continually check to see if the document is ready - var top = false; + // Index of currently firing callback (modified by add/remove as needed) + firingIndex = -1, - try { - top = window.frameElement == null && document.documentElement; - } catch(e) {} - - if ( top && top.doScroll ) { - (function doScrollCheck() { - if ( !jQuery.isReady ) { - - try { - // Use the trick by Diego Perini - // http://javascript.nwbox.com/IEContentLoaded/ - top.doScroll("left"); - } catch(e) { - return setTimeout( doScrollCheck, 50 ); - } + // Fire callbacks + fire = function() { - // detach all dom ready events - detach(); + // Enforce single-firing + locked = locked || options.once; - // and execute any waiting functions - jQuery.ready(); - } - })(); - } - } - } - return readyList.promise( obj ); -}; + // Execute callbacks for all pending executions, + // respecting firingIndex overrides and runtime changes + fired = firing = true; + for ( ; queue.length; firingIndex = -1 ) { + memory = queue.shift(); + while ( ++firingIndex < list.length ) { + + // Run callback and check for early termination + if ( list[ firingIndex ].apply( memory[ 0 ], memory[ 1 ] ) === false && + options.stopOnFalse ) { + // Jump to end and forget the data so .add doesn't re-fire + firingIndex = list.length; + memory = false; + } + } + } -var strundefined = typeof undefined; + // Forget the data if we're done with it + if ( !options.memory ) { + memory = false; + } + firing = false; + // Clean up if we're done firing for good + if ( locked ) { -// Support: IE<9 -// Iteration over object's inherited properties before its own -var i; -for ( i in jQuery( support ) ) { - break; -} -support.ownLast = i !== "0"; - -// Note: most support tests are defined in their respective modules. -// false until the test is run -support.inlineBlockNeedsLayout = false; - -// Execute ASAP in case we need to set body.style.zoom -jQuery(function() { - // Minified: var a,b,c,d - var val, div, body, container; - - body = document.getElementsByTagName( "body" )[ 0 ]; - if ( !body || !body.style ) { - // Return for frameset docs that don't have a body - return; - } + // Keep an empty list if we have data for future add calls + if ( memory ) { + list = []; - // Setup - div = document.createElement( "div" ); - container = document.createElement( "div" ); - container.style.cssText = "position:absolute;border:0;width:0;height:0;top:0;left:-9999px"; - body.appendChild( container ).appendChild( div ); - - if ( typeof div.style.zoom !== strundefined ) { - // Support: IE<8 - // Check if natively block-level elements act like inline-block - // elements when setting their display to 'inline' and giving - // them layout - div.style.cssText = "display:inline;margin:0;border:0;padding:1px;width:1px;zoom:1"; - - support.inlineBlockNeedsLayout = val = div.offsetWidth === 3; - if ( val ) { - // Prevent IE 6 from affecting layout for positioned elements #11048 - // Prevent IE from shrinking the body in IE 7 mode #12869 - // Support: IE<8 - body.style.zoom = 1; - } - } + // Otherwise, this object is spent + } else { + list = ""; + } + } + }, - body.removeChild( container ); -}); + // Actual Callbacks object + self = { + // Add a callback or a collection of callbacks to the list + add: function() { + if ( list ) { + // If we have memory from a past run, we should fire after adding + if ( memory && !firing ) { + firingIndex = list.length - 1; + queue.push( memory ); + } + ( function add( args ) { + jQuery.each( args, function( _, arg ) { + if ( isFunction( arg ) ) { + if ( !options.unique || !self.has( arg ) ) { + list.push( arg ); + } + } else if ( arg && arg.length && toType( arg ) !== "string" ) { -(function() { - var div = document.createElement( "div" ); + // Inspect recursively + add( arg ); + } + } ); + } )( arguments ); - // Execute the test only if not already executed in another module. - if (support.deleteExpando == null) { - // Support: IE<9 - support.deleteExpando = true; - try { - delete div.test; - } catch( e ) { - support.deleteExpando = false; - } - } + if ( memory && !firing ) { + fire(); + } + } + return this; + }, - // Null elements to avoid leaks in IE. - div = null; -})(); + // Remove a callback from the list + remove: function() { + jQuery.each( arguments, function( _, arg ) { + var index; + while ( ( index = jQuery.inArray( arg, list, index ) ) > -1 ) { + list.splice( index, 1 ); + // Handle firing indexes + if ( index <= firingIndex ) { + firingIndex--; + } + } + } ); + return this; + }, -/** - * Determines whether an object can have data - */ -jQuery.acceptData = function( elem ) { - var noData = jQuery.noData[ (elem.nodeName + " ").toLowerCase() ], - nodeType = +elem.nodeType || 1; + // Check if a given callback is in the list. + // If no argument is given, return whether or not list has callbacks attached. + has: function( fn ) { + return fn ? + jQuery.inArray( fn, list ) > -1 : + list.length > 0; + }, - // Do not set data on non-element DOM nodes because it will not be cleared (#8335). - return nodeType !== 1 && nodeType !== 9 ? - false : + // Remove all callbacks from the list + empty: function() { + if ( list ) { + list = []; + } + return this; + }, - // Nodes accept data unless otherwise specified; rejection can be conditional - !noData || noData !== true && elem.getAttribute("classid") === noData; -}; + // Disable .fire and .add + // Abort any current/pending executions + // Clear all callbacks and values + disable: function() { + locked = queue = []; + list = memory = ""; + return this; + }, + disabled: function() { + return !list; + }, + // Disable .fire + // Also disable .add unless we have memory (since it would have no effect) + // Abort any pending executions + lock: function() { + locked = queue = []; + if ( !memory && !firing ) { + list = memory = ""; + } + return this; + }, + locked: function() { + return !!locked; + }, -var rbrace = /^(?:\{[\w\W]*\}|\[[\w\W]*\])$/, - rmultiDash = /([A-Z])/g; + // Call all callbacks with the given context and arguments + fireWith: function( context, args ) { + if ( !locked ) { + args = args || []; + args = [ context, args.slice ? args.slice() : args ]; + queue.push( args ); + if ( !firing ) { + fire(); + } + } + return this; + }, -function dataAttr( elem, key, data ) { - // If nothing was found internally, try to fetch any - // data from the HTML5 data-* attribute - if ( data === undefined && elem.nodeType === 1 ) { + // Call all the callbacks with the given arguments + fire: function() { + self.fireWith( this, arguments ); + return this; + }, - var name = "data-" + key.replace( rmultiDash, "-$1" ).toLowerCase(); + // To know if the callbacks have already been called at least once + fired: function() { + return !!fired; + } + }; - data = elem.getAttribute( name ); + return self; + }; - if ( typeof data === "string" ) { - try { - data = data === "true" ? true : - data === "false" ? false : - data === "null" ? null : - // Only convert to a number if it doesn't change the string - +data + "" === data ? +data : - rbrace.test( data ) ? jQuery.parseJSON( data ) : - data; - } catch( e ) {} - - // Make sure we set the data so it isn't changed later - jQuery.data( elem, key, data ); - } else { - data = undefined; - } + function Identity( v ) { + return v; + } + function Thrower( ex ) { + throw ex; } - return data; -} - -// checks a cache object for emptiness -function isEmptyDataObject( obj ) { - var name; - for ( name in obj ) { + function adoptValue( value, resolve, reject, noValue ) { + var method; - // if the public data object is empty, the private is still empty - if ( name === "data" && jQuery.isEmptyObject( obj[name] ) ) { - continue; - } - if ( name !== "toJSON" ) { - return false; - } - } + try { - return true; -} + // Check for promise aspect first to privilege synchronous behavior + if ( value && isFunction( ( method = value.promise ) ) ) { + method.call( value ).done( resolve ).fail( reject ); -function internalData( elem, name, data, pvt /* Internal Use Only */ ) { - if ( !jQuery.acceptData( elem ) ) { - return; - } + // Other thenables + } else if ( value && isFunction( ( method = value.then ) ) ) { + method.call( value, resolve, reject ); - var ret, thisCache, - internalKey = jQuery.expando, + // Other non-thenables + } else { - // We have to handle DOM nodes and JS objects differently because IE6-7 - // can't GC object references properly across the DOM-JS boundary - isNode = elem.nodeType, + // Control `resolve` arguments by letting Array#slice cast boolean `noValue` to integer: + // * false: [ value ].slice( 0 ) => resolve( value ) + // * true: [ value ].slice( 1 ) => resolve() + resolve.apply( undefined, [ value ].slice( noValue ) ); + } + + // For Promises/A+, convert exceptions into rejections + // Since jQuery.when doesn't unwrap thenables, we can skip the extra checks appearing in + // Deferred#then to conditionally suppress rejection. + } catch ( value ) { + + // Support: Android 4.0 only + // Strict mode functions invoked without .call/.apply get global-object context + reject.apply( undefined, [ value ] ); + } + } + + jQuery.extend( { + + Deferred: function( func ) { + var tuples = [ + + // action, add listener, callbacks, + // ... .then handlers, argument index, [final state] + [ "notify", "progress", jQuery.Callbacks( "memory" ), + jQuery.Callbacks( "memory" ), 2 ], + [ "resolve", "done", jQuery.Callbacks( "once memory" ), + jQuery.Callbacks( "once memory" ), 0, "resolved" ], + [ "reject", "fail", jQuery.Callbacks( "once memory" ), + jQuery.Callbacks( "once memory" ), 1, "rejected" ] + ], + state = "pending", + promise = { + state: function() { + return state; + }, + always: function() { + deferred.done( arguments ).fail( arguments ); + return this; + }, + "catch": function( fn ) { + return promise.then( null, fn ); + }, + + // Keep pipe for back-compat + pipe: function( /* fnDone, fnFail, fnProgress */ ) { + var fns = arguments; + + return jQuery.Deferred( function( newDefer ) { + jQuery.each( tuples, function( _i, tuple ) { + + // Map tuples (progress, done, fail) to arguments (done, fail, progress) + var fn = isFunction( fns[ tuple[ 4 ] ] ) && fns[ tuple[ 4 ] ]; + + // deferred.progress(function() { bind to newDefer or newDefer.notify }) + // deferred.done(function() { bind to newDefer or newDefer.resolve }) + // deferred.fail(function() { bind to newDefer or newDefer.reject }) + deferred[ tuple[ 1 ] ]( function() { + var returned = fn && fn.apply( this, arguments ); + if ( returned && isFunction( returned.promise ) ) { + returned.promise() + .progress( newDefer.notify ) + .done( newDefer.resolve ) + .fail( newDefer.reject ); + } else { + newDefer[ tuple[ 0 ] + "With" ]( + this, + fn ? [ returned ] : arguments + ); + } + } ); + } ); + fns = null; + } ).promise(); + }, + then: function( onFulfilled, onRejected, onProgress ) { + var maxDepth = 0; + function resolve( depth, deferred, handler, special ) { + return function() { + var that = this, + args = arguments, + mightThrow = function() { + var returned, then; + + // Support: Promises/A+ section 2.3.3.3.3 + // https://promisesaplus.com/#point-59 + // Ignore double-resolution attempts + if ( depth < maxDepth ) { + return; + } + + returned = handler.apply( that, args ); + + // Support: Promises/A+ section 2.3.1 + // https://promisesaplus.com/#point-48 + if ( returned === deferred.promise() ) { + throw new TypeError( "Thenable self-resolution" ); + } + + // Support: Promises/A+ sections 2.3.3.1, 3.5 + // https://promisesaplus.com/#point-54 + // https://promisesaplus.com/#point-75 + // Retrieve `then` only once + then = returned && + + // Support: Promises/A+ section 2.3.4 + // https://promisesaplus.com/#point-64 + // Only check objects and functions for thenability + ( typeof returned === "object" || + typeof returned === "function" ) && + returned.then; + + // Handle a returned thenable + if ( isFunction( then ) ) { + + // Special processors (notify) just wait for resolution + if ( special ) { + then.call( + returned, + resolve( maxDepth, deferred, Identity, special ), + resolve( maxDepth, deferred, Thrower, special ) + ); + + // Normal processors (resolve) also hook into progress + } else { + + // ...and disregard older resolution values + maxDepth++; + + then.call( + returned, + resolve( maxDepth, deferred, Identity, special ), + resolve( maxDepth, deferred, Thrower, special ), + resolve( maxDepth, deferred, Identity, + deferred.notifyWith ) + ); + } + + // Handle all other returned values + } else { + + // Only substitute handlers pass on context + // and multiple values (non-spec behavior) + if ( handler !== Identity ) { + that = undefined; + args = [ returned ]; + } + + // Process the value(s) + // Default process is resolve + ( special || deferred.resolveWith )( that, args ); + } + }, + + // Only normal processors (resolve) catch and reject exceptions + process = special ? + mightThrow : + function() { + try { + mightThrow(); + } catch ( e ) { + + if ( jQuery.Deferred.exceptionHook ) { + jQuery.Deferred.exceptionHook( e, + process.stackTrace ); + } + + // Support: Promises/A+ section 2.3.3.3.4.1 + // https://promisesaplus.com/#point-61 + // Ignore post-resolution exceptions + if ( depth + 1 >= maxDepth ) { + + // Only substitute handlers pass on context + // and multiple values (non-spec behavior) + if ( handler !== Thrower ) { + that = undefined; + args = [ e ]; + } + + deferred.rejectWith( that, args ); + } + } + }; + + // Support: Promises/A+ section 2.3.3.3.1 + // https://promisesaplus.com/#point-57 + // Re-resolve promises immediately to dodge false rejection from + // subsequent errors + if ( depth ) { + process(); + } else { - // Only DOM nodes need the global jQuery cache; JS object data is - // attached directly to the object so GC can occur automatically - cache = isNode ? jQuery.cache : elem, + // Call an optional hook to record the stack, in case of exception + // since it's otherwise lost when execution goes async + if ( jQuery.Deferred.getStackHook ) { + process.stackTrace = jQuery.Deferred.getStackHook(); + } + window.setTimeout( process ); + } + }; + } - // Only defining an ID for JS objects if its cache already exists allows - // the code to shortcut on the same path as a DOM node with no cache - id = isNode ? elem[ internalKey ] : elem[ internalKey ] && internalKey; + return jQuery.Deferred( function( newDefer ) { + + // progress_handlers.add( ... ) + tuples[ 0 ][ 3 ].add( + resolve( + 0, + newDefer, + isFunction( onProgress ) ? + onProgress : + Identity, + newDefer.notifyWith + ) + ); + + // fulfilled_handlers.add( ... ) + tuples[ 1 ][ 3 ].add( + resolve( + 0, + newDefer, + isFunction( onFulfilled ) ? + onFulfilled : + Identity + ) + ); + + // rejected_handlers.add( ... ) + tuples[ 2 ][ 3 ].add( + resolve( + 0, + newDefer, + isFunction( onRejected ) ? + onRejected : + Thrower + ) + ); + } ).promise(); + }, + + // Get a promise for this deferred + // If obj is provided, the promise aspect is added to the object + promise: function( obj ) { + return obj != null ? jQuery.extend( obj, promise ) : promise; + } + }, + deferred = {}; - // Avoid doing any more work than we need to when trying to get data on an - // object that has no data at all - if ( (!id || !cache[id] || (!pvt && !cache[id].data)) && data === undefined && typeof name === "string" ) { - return; - } + // Add list-specific methods + jQuery.each( tuples, function( i, tuple ) { + var list = tuple[ 2 ], + stateString = tuple[ 5 ]; - if ( !id ) { - // Only DOM nodes need a new unique ID for each element since their data - // ends up in the global cache - if ( isNode ) { - id = elem[ internalKey ] = deletedIds.pop() || jQuery.guid++; - } else { - id = internalKey; - } - } + // promise.progress = list.add + // promise.done = list.add + // promise.fail = list.add + promise[ tuple[ 1 ] ] = list.add; - if ( !cache[ id ] ) { - // Avoid exposing jQuery metadata on plain JS objects when the object - // is serialized using JSON.stringify - cache[ id ] = isNode ? {} : { toJSON: jQuery.noop }; - } + // Handle state + if ( stateString ) { + list.add( + function() { - // An object can be passed to jQuery.data instead of a key/value pair; this gets - // shallow copied over onto the existing cache - if ( typeof name === "object" || typeof name === "function" ) { - if ( pvt ) { - cache[ id ] = jQuery.extend( cache[ id ], name ); - } else { - cache[ id ].data = jQuery.extend( cache[ id ].data, name ); - } - } + // state = "resolved" (i.e., fulfilled) + // state = "rejected" + state = stateString; + }, - thisCache = cache[ id ]; + // rejected_callbacks.disable + // fulfilled_callbacks.disable + tuples[ 3 - i ][ 2 ].disable, - // jQuery data() is stored in a separate object inside the object's internal data - // cache in order to avoid key collisions between internal data and user-defined - // data. - if ( !pvt ) { - if ( !thisCache.data ) { - thisCache.data = {}; - } + // rejected_handlers.disable + // fulfilled_handlers.disable + tuples[ 3 - i ][ 3 ].disable, - thisCache = thisCache.data; - } + // progress_callbacks.lock + tuples[ 0 ][ 2 ].lock, - if ( data !== undefined ) { - thisCache[ jQuery.camelCase( name ) ] = data; - } + // progress_handlers.lock + tuples[ 0 ][ 3 ].lock + ); + } - // Check for both converted-to-camel and non-converted data property names - // If a data property was specified - if ( typeof name === "string" ) { + // progress_handlers.fire + // fulfilled_handlers.fire + // rejected_handlers.fire + list.add( tuple[ 3 ].fire ); - // First Try to find as-is property data - ret = thisCache[ name ]; + // deferred.notify = function() { deferred.notifyWith(...) } + // deferred.resolve = function() { deferred.resolveWith(...) } + // deferred.reject = function() { deferred.rejectWith(...) } + deferred[ tuple[ 0 ] ] = function() { + deferred[ tuple[ 0 ] + "With" ]( this === deferred ? undefined : this, arguments ); + return this; + }; - // Test for null|undefined property data - if ( ret == null ) { + // deferred.notifyWith = list.fireWith + // deferred.resolveWith = list.fireWith + // deferred.rejectWith = list.fireWith + deferred[ tuple[ 0 ] + "With" ] = list.fireWith; + } ); - // Try to find the camelCased property - ret = thisCache[ jQuery.camelCase( name ) ]; - } - } else { - ret = thisCache; - } + // Make the deferred a promise + promise.promise( deferred ); - return ret; -} + // Call given func if any + if ( func ) { + func.call( deferred, deferred ); + } -function internalRemoveData( elem, name, pvt ) { - if ( !jQuery.acceptData( elem ) ) { - return; - } + // All done! + return deferred; + }, - var thisCache, i, - isNode = elem.nodeType, + // Deferred helper + when: function( singleValue ) { + var - // See jQuery.data for more information - cache = isNode ? jQuery.cache : elem, - id = isNode ? elem[ jQuery.expando ] : jQuery.expando; + // count of uncompleted subordinates + remaining = arguments.length, - // If there is already no cache entry for this object, there is no - // purpose in continuing - if ( !cache[ id ] ) { - return; - } + // count of unprocessed arguments + i = remaining, - if ( name ) { + // subordinate fulfillment data + resolveContexts = Array( i ), + resolveValues = slice.call( arguments ), - thisCache = pvt ? cache[ id ] : cache[ id ].data; + // the primary Deferred + primary = jQuery.Deferred(), - if ( thisCache ) { + // subordinate callback factory + updateFunc = function( i ) { + return function( value ) { + resolveContexts[ i ] = this; + resolveValues[ i ] = arguments.length > 1 ? slice.call( arguments ) : value; + if ( !( --remaining ) ) { + primary.resolveWith( resolveContexts, resolveValues ); + } + }; + }; - // Support array or space separated string names for data keys - if ( !jQuery.isArray( name ) ) { + // Single- and empty arguments are adopted like Promise.resolve + if ( remaining <= 1 ) { + adoptValue( singleValue, primary.done( updateFunc( i ) ).resolve, primary.reject, + !remaining ); - // try the string as a key before any manipulation - if ( name in thisCache ) { - name = [ name ]; - } else { + // Use .then() to unwrap secondary thenables (cf. gh-3000) + if ( primary.state() === "pending" || + isFunction( resolveValues[ i ] && resolveValues[ i ].then ) ) { - // split the camel cased version by spaces unless a key with the spaces exists - name = jQuery.camelCase( name ); - if ( name in thisCache ) { - name = [ name ]; - } else { - name = name.split(" "); - } + return primary.then(); } - } else { - // If "name" is an array of keys... - // When data is initially created, via ("key", "val") signature, - // keys will be converted to camelCase. - // Since there is no way to tell _how_ a key was added, remove - // both plain key and camelCase key. #12786 - // This will only penalize the array argument path. - name = name.concat( jQuery.map( name, jQuery.camelCase ) ); } - i = name.length; + // Multiple arguments are aggregated like Promise.all array elements while ( i-- ) { - delete thisCache[ name[i] ]; + adoptValue( resolveValues[ i ], updateFunc( i ), primary.reject ); } - // If there is no data left in the cache, we want to continue - // and let the cache object itself get destroyed - if ( pvt ? !isEmptyDataObject(thisCache) : !jQuery.isEmptyObject(thisCache) ) { - return; - } + return primary.promise(); } - } + } ); - // See jQuery.data for more information - if ( !pvt ) { - delete cache[ id ].data; - // Don't destroy the parent cache unless the internal data object - // had been the only thing left in it - if ( !isEmptyDataObject( cache[ id ] ) ) { - return; - } - } +// These usually indicate a programmer mistake during development, +// warn about them ASAP rather than swallowing them by default. + var rerrorNames = /^(Eval|Internal|Range|Reference|Syntax|Type|URI)Error$/; - // Destroy the cache - if ( isNode ) { - jQuery.cleanData( [ elem ], true ); + jQuery.Deferred.exceptionHook = function( error, stack ) { - // Use delete when supported for expandos or `cache` is not a window per isWindow (#10080) - /* jshint eqeqeq: false */ - } else if ( support.deleteExpando || cache != cache.window ) { - /* jshint eqeqeq: true */ - delete cache[ id ]; + // Support: IE 8 - 9 only + // Console exists when dev tools are open, which can happen at any time + if ( window.console && window.console.warn && error && rerrorNames.test( error.name ) ) { + window.console.warn( "jQuery.Deferred exception: " + error.message, error.stack, stack ); + } + }; - // When all else fails, null - } else { - cache[ id ] = null; - } -} - -jQuery.extend({ - cache: {}, - - // The following elements (space-suffixed to avoid Object.prototype collisions) - // throw uncatchable exceptions if you attempt to set expando properties - noData: { - "applet ": true, - "embed ": true, - // ...but Flash objects (which have this classid) *can* handle expandos - "object ": "clsid:D27CDB6E-AE6D-11cf-96B8-444553540000" - }, - - hasData: function( elem ) { - elem = elem.nodeType ? jQuery.cache[ elem[jQuery.expando] ] : elem[ jQuery.expando ]; - return !!elem && !isEmptyDataObject( elem ); - }, - - data: function( elem, name, data ) { - return internalData( elem, name, data ); - }, - - removeData: function( elem, name ) { - return internalRemoveData( elem, name ); - }, - - // For internal use only. - _data: function( elem, name, data ) { - return internalData( elem, name, data, true ); - }, - - _removeData: function( elem, name ) { - return internalRemoveData( elem, name, true ); - } -}); -jQuery.fn.extend({ - data: function( key, value ) { - var i, name, data, - elem = this[0], - attrs = elem && elem.attributes; - // Special expections of .data basically thwart jQuery.access, - // so implement the relevant behavior ourselves - // Gets all values - if ( key === undefined ) { - if ( this.length ) { - data = jQuery.data( elem ); + jQuery.readyException = function( error ) { + window.setTimeout( function() { + throw error; + } ); + }; - if ( elem.nodeType === 1 && !jQuery._data( elem, "parsedAttrs" ) ) { - i = attrs.length; - while ( i-- ) { - // Support: IE11+ - // The attrs elements can be null (#14894) - if ( attrs[ i ] ) { - name = attrs[ i ].name; - if ( name.indexOf( "data-" ) === 0 ) { - name = jQuery.camelCase( name.slice(5) ); - dataAttr( elem, name, data[ name ] ); - } - } - } - jQuery._data( elem, "parsedAttrs", true ); - } - } - return data; - } - // Sets multiple values - if ( typeof key === "object" ) { - return this.each(function() { - jQuery.data( this, key ); - }); - } +// The deferred used on DOM ready + var readyList = jQuery.Deferred(); - return arguments.length > 1 ? + jQuery.fn.ready = function( fn ) { - // Sets one value - this.each(function() { - jQuery.data( this, key, value ); - }) : - - // Gets one value - // Try to fetch any internally stored data first - elem ? dataAttr( elem, key, jQuery.data( elem, key ) ) : undefined; - }, - - removeData: function( key ) { - return this.each(function() { - jQuery.removeData( this, key ); - }); - } -}); + readyList + .then( fn ) + // Wrap jQuery.readyException in a function so that the lookup + // happens at the time of error handling instead of callback + // registration. + .catch( function( error ) { + jQuery.readyException( error ); + } ); -jQuery.extend({ - queue: function( elem, type, data ) { - var queue; + return this; + }; - if ( elem ) { - type = ( type || "fx" ) + "queue"; - queue = jQuery._data( elem, type ); + jQuery.extend( { - // Speed up dequeue by getting out quickly if this is just a lookup - if ( data ) { - if ( !queue || jQuery.isArray(data) ) { - queue = jQuery._data( elem, type, jQuery.makeArray(data) ); - } else { - queue.push( data ); - } - } - return queue || []; - } - }, + // Is the DOM ready to be used? Set to true once it occurs. + isReady: false, - dequeue: function( elem, type ) { - type = type || "fx"; + // A counter to track how many items to wait for before + // the ready event fires. See #6781 + readyWait: 1, - var queue = jQuery.queue( elem, type ), - startLength = queue.length, - fn = queue.shift(), - hooks = jQuery._queueHooks( elem, type ), - next = function() { - jQuery.dequeue( elem, type ); - }; + // Handle when the DOM is ready + ready: function( wait ) { - // If the fx queue is dequeued, always remove the progress sentinel - if ( fn === "inprogress" ) { - fn = queue.shift(); - startLength--; - } + // Abort if there are pending holds or we're already ready + if ( wait === true ? --jQuery.readyWait : jQuery.isReady ) { + return; + } - if ( fn ) { + // Remember that the DOM is ready + jQuery.isReady = true; - // Add a progress sentinel to prevent the fx queue from being - // automatically dequeued - if ( type === "fx" ) { - queue.unshift( "inprogress" ); + // If a normal DOM Ready event fired, decrement, and wait if need be + if ( wait !== true && --jQuery.readyWait > 0 ) { + return; } - // clear up the last queue stop function - delete hooks.stop; - fn.call( elem, next, hooks ); + // If there are functions bound, to execute + readyList.resolveWith( document, [ jQuery ] ); } + } ); - if ( !startLength && hooks ) { - hooks.empty.fire(); - } - }, + jQuery.ready.then = readyList.then; - // not intended for public consumption - generates a queueHooks object, or returns the current one - _queueHooks: function( elem, type ) { - var key = type + "queueHooks"; - return jQuery._data( elem, key ) || jQuery._data( elem, key, { - empty: jQuery.Callbacks("once memory").add(function() { - jQuery._removeData( elem, type + "queue" ); - jQuery._removeData( elem, key ); - }) - }); +// The ready event handler and self cleanup method + function completed() { + document.removeEventListener( "DOMContentLoaded", completed ); + window.removeEventListener( "load", completed ); + jQuery.ready(); } -}); - -jQuery.fn.extend({ - queue: function( type, data ) { - var setter = 2; - - if ( typeof type !== "string" ) { - data = type; - type = "fx"; - setter--; - } - if ( arguments.length < setter ) { - return jQuery.queue( this[0], type ); - } - - return data === undefined ? - this : - this.each(function() { - var queue = jQuery.queue( this, type, data ); +// Catch cases where $(document).ready() is called +// after the browser event has already occurred. +// Support: IE <=9 - 10 only +// Older IE sometimes signals "interactive" too soon + if ( document.readyState === "complete" || + ( document.readyState !== "loading" && !document.documentElement.doScroll ) ) { - // ensure a hooks for this queue - jQuery._queueHooks( this, type ); + // Handle it asynchronously to allow scripts the opportunity to delay ready + window.setTimeout( jQuery.ready ); - if ( type === "fx" && queue[0] !== "inprogress" ) { - jQuery.dequeue( this, type ); - } - }); - }, - dequeue: function( type ) { - return this.each(function() { - jQuery.dequeue( this, type ); - }); - }, - clearQueue: function( type ) { - return this.queue( type || "fx", [] ); - }, - // Get a promise resolved when queues of a certain type - // are emptied (fx is the type by default) - promise: function( type, obj ) { - var tmp, - count = 1, - defer = jQuery.Deferred(), - elements = this, - i = this.length, - resolve = function() { - if ( !( --count ) ) { - defer.resolveWith( elements, [ elements ] ); - } - }; + } else { - if ( typeof type !== "string" ) { - obj = type; - type = undefined; - } - type = type || "fx"; + // Use the handy event callback + document.addEventListener( "DOMContentLoaded", completed ); - while ( i-- ) { - tmp = jQuery._data( elements[ i ], type + "queueHooks" ); - if ( tmp && tmp.empty ) { - count++; - tmp.empty.add( resolve ); - } - } - resolve(); - return defer.promise( obj ); + // A fallback to window.onload, that will always work + window.addEventListener( "load", completed ); } -}); -var pnum = (/[+-]?(?:\d*\.|)\d+(?:[eE][+-]?\d+|)/).source; -var cssExpand = [ "Top", "Right", "Bottom", "Left" ]; - -var isHidden = function( elem, el ) { - // isHidden might be called from jQuery#filter function; - // in that case, element will be second argument - elem = el || elem; - return jQuery.css( elem, "display" ) === "none" || !jQuery.contains( elem.ownerDocument, elem ); - }; // Multifunctional method to get and set values of a collection // The value/s can optionally be executed if it's a function -var access = jQuery.access = function( elems, fn, key, value, chainable, emptyGet, raw ) { - var i = 0, - length = elems.length, - bulk = key == null; + var access = function( elems, fn, key, value, chainable, emptyGet, raw ) { + var i = 0, + len = elems.length, + bulk = key == null; - // Sets many values - if ( jQuery.type( key ) === "object" ) { - chainable = true; - for ( i in key ) { - jQuery.access( elems, fn, i, key[i], true, emptyGet, raw ); - } + // Sets many values + if ( toType( key ) === "object" ) { + chainable = true; + for ( i in key ) { + access( elems, fn, i, key[ i ], true, emptyGet, raw ); + } + + // Sets one value + } else if ( value !== undefined ) { + chainable = true; - // Sets one value - } else if ( value !== undefined ) { - chainable = true; + if ( !isFunction( value ) ) { + raw = true; + } - if ( !jQuery.isFunction( value ) ) { - raw = true; - } + if ( bulk ) { - if ( bulk ) { - // Bulk operations run against the entire set - if ( raw ) { - fn.call( elems, value ); - fn = null; + // Bulk operations run against the entire set + if ( raw ) { + fn.call( elems, value ); + fn = null; - // ...except when executing function values - } else { - bulk = fn; - fn = function( elem, key, value ) { - return bulk.call( jQuery( elem ), value ); - }; + // ...except when executing function values + } else { + bulk = fn; + fn = function( elem, _key, value ) { + return bulk.call( jQuery( elem ), value ); + }; + } } - } - if ( fn ) { - for ( ; i < length; i++ ) { - fn( elems[i], key, raw ? value : value.call( elems[i], i, fn( elems[i], key ) ) ); + if ( fn ) { + for ( ; i < len; i++ ) { + fn( + elems[ i ], key, raw ? + value : + value.call( elems[ i ], i, fn( elems[ i ], key ) ) + ); + } } } - } - return chainable ? - elems : + if ( chainable ) { + return elems; + } // Gets - bulk ? - fn.call( elems ) : - length ? fn( elems[0], key ) : emptyGet; -}; -var rcheckableType = (/^(?:checkbox|radio)$/i); - - - -(function() { - // Minified: var a,b,c - var input = document.createElement( "input" ), - div = document.createElement( "div" ), - fragment = document.createDocumentFragment(); - - // Setup - div.innerHTML = "
a"; - - // IE strips leading whitespace when .innerHTML is used - support.leadingWhitespace = div.firstChild.nodeType === 3; - - // Make sure that tbody elements aren't automatically inserted - // IE will insert them into empty tables - support.tbody = !div.getElementsByTagName( "tbody" ).length; - - // Make sure that link elements get serialized correctly by innerHTML - // This requires a wrapper element in IE - support.htmlSerialize = !!div.getElementsByTagName( "link" ).length; - - // Makes sure cloning an html5 element does not cause problems - // Where outerHTML is undefined, this still works - support.html5Clone = - document.createElement( "nav" ).cloneNode( true ).outerHTML !== "<:nav>"; - - // Check if a disconnected checkbox will retain its checked - // value of true after appended to the DOM (IE6/7) - input.type = "checkbox"; - input.checked = true; - fragment.appendChild( input ); - support.appendChecked = input.checked; - - // Make sure textarea (and checkbox) defaultValue is properly cloned - // Support: IE6-IE11+ - div.innerHTML = ""; - support.noCloneChecked = !!div.cloneNode( true ).lastChild.defaultValue; - - // #11217 - WebKit loses check when the name is after the checked attribute - fragment.appendChild( div ); - div.innerHTML = ""; - - // Support: Safari 5.1, iOS 5.1, Android 4.x, Android 2.3 - // old WebKit doesn't clone checked state correctly in fragments - support.checkClone = div.cloneNode( true ).cloneNode( true ).lastChild.checked; - - // Support: IE<9 - // Opera does not clone events (and typeof div.attachEvent === undefined). - // IE9-10 clones events bound via attachEvent, but they don't trigger with .click() - support.noCloneEvent = true; - if ( div.attachEvent ) { - div.attachEvent( "onclick", function() { - support.noCloneEvent = false; - }); - - div.cloneNode( true ).click(); - } - - // Execute the test only if not already executed in another module. - if (support.deleteExpando == null) { - // Support: IE<9 - support.deleteExpando = true; - try { - delete div.test; - } catch( e ) { - support.deleteExpando = false; + if ( bulk ) { + return fn.call( elems ); } - } -})(); + return len ? fn( elems[ 0 ], key ) : emptyGet; + }; -(function() { - var i, eventName, - div = document.createElement( "div" ); - // Support: IE<9 (lack submit/change bubble), Firefox 23+ (lack focusin event) - for ( i in { submit: true, change: true, focusin: true }) { - eventName = "on" + i; +// Matches dashed string for camelizing + var rmsPrefix = /^-ms-/, + rdashAlpha = /-([a-z])/g; - if ( !(support[ i + "Bubbles" ] = eventName in window) ) { - // Beware of CSP restrictions (https://developer.mozilla.org/en/Security/CSP) - div.setAttribute( eventName, "t" ); - support[ i + "Bubbles" ] = div.attributes[ eventName ].expando === false; - } +// Used by camelCase as callback to replace() + function fcamelCase( _all, letter ) { + return letter.toUpperCase(); } - // Null elements to avoid leaks in IE. - div = null; -})(); +// Convert dashed to camelCase; used by the css and data modules +// Support: IE <=9 - 11, Edge 12 - 15 +// Microsoft forgot to hump their vendor prefix (#9572) + function camelCase( string ) { + return string.replace( rmsPrefix, "ms-" ).replace( rdashAlpha, fcamelCase ); + } + var acceptData = function( owner ) { + // Accepts only: + // - Node + // - Node.ELEMENT_NODE + // - Node.DOCUMENT_NODE + // - Object + // - Any + return owner.nodeType === 1 || owner.nodeType === 9 || !( +owner.nodeType ); + }; -var rformElems = /^(?:input|select|textarea)$/i, - rkeyEvent = /^key/, - rmouseEvent = /^(?:mouse|pointer|contextmenu)|click/, - rfocusMorph = /^(?:focusinfocus|focusoutblur)$/, - rtypenamespace = /^([^.]*)(?:\.(.+)|)$/; -function returnTrue() { - return true; -} -function returnFalse() { - return false; -} -function safeActiveElement() { - try { - return document.activeElement; - } catch ( err ) { } -} + function Data() { + this.expando = jQuery.expando + Data.uid++; + } -/* - * Helper functions for managing events -- not part of the public interface. - * Props to Dean Edwards' addEvent library for many of the ideas. - */ -jQuery.event = { + Data.uid = 1; - global: {}, + Data.prototype = { - add: function( elem, types, handler, data, selector ) { - var tmp, events, t, handleObjIn, - special, eventHandle, handleObj, - handlers, type, namespaces, origType, - elemData = jQuery._data( elem ); + cache: function( owner ) { - // Don't attach events to noData or text/comment nodes (but allow plain objects) - if ( !elemData ) { - return; - } + // Check if the owner object already has a cache + var value = owner[ this.expando ]; - // Caller can pass in an object of custom data in lieu of the handler - if ( handler.handler ) { - handleObjIn = handler; - handler = handleObjIn.handler; - selector = handleObjIn.selector; - } + // If not, create one + if ( !value ) { + value = {}; - // Make sure that the handler has a unique ID, used to find/remove it later - if ( !handler.guid ) { - handler.guid = jQuery.guid++; - } + // We can accept data for non-element nodes in modern browsers, + // but we should not, see #8335. + // Always return an empty object. + if ( acceptData( owner ) ) { - // Init the element's event structure and main handler, if this is the first - if ( !(events = elemData.events) ) { - events = elemData.events = {}; - } - if ( !(eventHandle = elemData.handle) ) { - eventHandle = elemData.handle = function( e ) { - // Discard the second event of a jQuery.event.trigger() and - // when an event is called after a page has unloaded - return typeof jQuery !== strundefined && (!e || jQuery.event.triggered !== e.type) ? - jQuery.event.dispatch.apply( eventHandle.elem, arguments ) : - undefined; - }; - // Add elem as a property of the handle fn to prevent a memory leak with IE non-native events - eventHandle.elem = elem; - } + // If it is a node unlikely to be stringify-ed or looped over + // use plain assignment + if ( owner.nodeType ) { + owner[ this.expando ] = value; + + // Otherwise secure it in a non-enumerable property + // configurable must be true to allow the property to be + // deleted when data is removed + } else { + Object.defineProperty( owner, this.expando, { + value: value, + configurable: true + } ); + } + } + } + + return value; + }, + set: function( owner, data, value ) { + var prop, + cache = this.cache( owner ); - // Handle multiple events separated by a space - types = ( types || "" ).match( rnotwhite ) || [ "" ]; - t = types.length; - while ( t-- ) { - tmp = rtypenamespace.exec( types[t] ) || []; - type = origType = tmp[1]; - namespaces = ( tmp[2] || "" ).split( "." ).sort(); + // Handle: [ owner, key, value ] args + // Always use camelCase key (gh-2257) + if ( typeof data === "string" ) { + cache[ camelCase( data ) ] = value; - // There *must* be a type, no attaching namespace-only handlers - if ( !type ) { - continue; + // Handle: [ owner, { properties } ] args + } else { + + // Copy the properties one-by-one to the cache object + for ( prop in data ) { + cache[ camelCase( prop ) ] = data[ prop ]; + } } + return cache; + }, + get: function( owner, key ) { + return key === undefined ? + this.cache( owner ) : - // If event changes its type, use the special event handlers for the changed type - special = jQuery.event.special[ type ] || {}; + // Always use camelCase key (gh-2257) + owner[ this.expando ] && owner[ this.expando ][ camelCase( key ) ]; + }, + access: function( owner, key, value ) { + + // In cases where either: + // + // 1. No key was specified + // 2. A string key was specified, but no value provided + // + // Take the "read" path and allow the get method to determine + // which value to return, respectively either: + // + // 1. The entire cache object + // 2. The data stored at the key + // + if ( key === undefined || + ( ( key && typeof key === "string" ) && value === undefined ) ) { + + return this.get( owner, key ); + } + + // When the key is not a string, or both a key and value + // are specified, set or extend (existing objects) with either: + // + // 1. An object of properties + // 2. A key and value + // + this.set( owner, key, value ); + + // Since the "set" path can have two possible entry points + // return the expected data based on which path was taken[*] + return value !== undefined ? value : key; + }, + remove: function( owner, key ) { + var i, + cache = owner[ this.expando ]; - // If selector defined, determine special event api type, otherwise given type - type = ( selector ? special.delegateType : special.bindType ) || type; + if ( cache === undefined ) { + return; + } - // Update special based on newly reset type - special = jQuery.event.special[ type ] || {}; + if ( key !== undefined ) { - // handleObj is passed to all event handlers - handleObj = jQuery.extend({ - type: type, - origType: origType, - data: data, - handler: handler, - guid: handler.guid, - selector: selector, - needsContext: selector && jQuery.expr.match.needsContext.test( selector ), - namespace: namespaces.join(".") - }, handleObjIn ); + // Support array or space separated string of keys + if ( Array.isArray( key ) ) { - // Init the event handler queue if we're the first - if ( !(handlers = events[ type ]) ) { - handlers = events[ type ] = []; - handlers.delegateCount = 0; + // If key is an array of keys... + // We always set camelCase keys, so remove that. + key = key.map( camelCase ); + } else { + key = camelCase( key ); - // Only use addEventListener/attachEvent if the special events handler returns false - if ( !special.setup || special.setup.call( elem, data, namespaces, eventHandle ) === false ) { - // Bind the global event handler to the element - if ( elem.addEventListener ) { - elem.addEventListener( type, eventHandle, false ); + // If a key with the spaces exists, use it. + // Otherwise, create an array by matching non-whitespace + key = key in cache ? + [ key ] : + ( key.match( rnothtmlwhite ) || [] ); + } - } else if ( elem.attachEvent ) { - elem.attachEvent( "on" + type, eventHandle ); - } + i = key.length; + + while ( i-- ) { + delete cache[ key[ i ] ]; } } - if ( special.add ) { - special.add.call( elem, handleObj ); + // Remove the expando if there's no more data + if ( key === undefined || jQuery.isEmptyObject( cache ) ) { - if ( !handleObj.handler.guid ) { - handleObj.handler.guid = handler.guid; + // Support: Chrome <=35 - 45 + // Webkit & Blink performance suffers when deleting properties + // from DOM nodes, so set to undefined instead + // https://bugs.chromium.org/p/chromium/issues/detail?id=378607 (bug restricted) + if ( owner.nodeType ) { + owner[ this.expando ] = undefined; + } else { + delete owner[ this.expando ]; } } + }, + hasData: function( owner ) { + var cache = owner[ this.expando ]; + return cache !== undefined && !jQuery.isEmptyObject( cache ); + } + }; + var dataPriv = new Data(); + + var dataUser = new Data(); + + + +// Implementation Summary +// +// 1. Enforce API surface and semantic compatibility with 1.9.x branch +// 2. Improve the module's maintainability by reducing the storage +// paths to a single mechanism. +// 3. Use the same single mechanism to support "private" and "user" data. +// 4. _Never_ expose "private" data to user code (TODO: Drop _data, _removeData) +// 5. Avoid exposing implementation details on user objects (eg. expando properties) +// 6. Provide a clear path for implementation upgrade to WeakMap in 2014 + + var rbrace = /^(?:\{[\w\W]*\}|\[[\w\W]*\])$/, + rmultiDash = /[A-Z]/g; + + function getData( data ) { + if ( data === "true" ) { + return true; + } + + if ( data === "false" ) { + return false; + } + + if ( data === "null" ) { + return null; + } + + // Only convert to a number if it doesn't change the string + if ( data === +data + "" ) { + return +data; + } + + if ( rbrace.test( data ) ) { + return JSON.parse( data ); + } + + return data; + } + + function dataAttr( elem, key, data ) { + var name; + + // If nothing was found internally, try to fetch any + // data from the HTML5 data-* attribute + if ( data === undefined && elem.nodeType === 1 ) { + name = "data-" + key.replace( rmultiDash, "-$&" ).toLowerCase(); + data = elem.getAttribute( name ); - // Add to the element's handler list, delegates in front - if ( selector ) { - handlers.splice( handlers.delegateCount++, 0, handleObj ); + if ( typeof data === "string" ) { + try { + data = getData( data ); + } catch ( e ) {} + + // Make sure we set the data so it isn't changed later + dataUser.set( elem, key, data ); } else { - handlers.push( handleObj ); + data = undefined; } - - // Keep track of which events have ever been used, for event optimization - jQuery.event.global[ type ] = true; } + return data; + } - // Nullify elem to prevent memory leaks in IE - elem = null; - }, + jQuery.extend( { + hasData: function( elem ) { + return dataUser.hasData( elem ) || dataPriv.hasData( elem ); + }, - // Detach an event or set of events from an element - remove: function( elem, types, handler, selector, mappedTypes ) { - var j, handleObj, tmp, - origCount, t, events, - special, handlers, type, - namespaces, origType, - elemData = jQuery.hasData( elem ) && jQuery._data( elem ); + data: function( elem, name, data ) { + return dataUser.access( elem, name, data ); + }, - if ( !elemData || !(events = elemData.events) ) { - return; - } + removeData: function( elem, name ) { + dataUser.remove( elem, name ); + }, - // Once for each type.namespace in types; type may be omitted - types = ( types || "" ).match( rnotwhite ) || [ "" ]; - t = types.length; - while ( t-- ) { - tmp = rtypenamespace.exec( types[t] ) || []; - type = origType = tmp[1]; - namespaces = ( tmp[2] || "" ).split( "." ).sort(); + // TODO: Now that all calls to _data and _removeData have been replaced + // with direct calls to dataPriv methods, these can be deprecated. + _data: function( elem, name, data ) { + return dataPriv.access( elem, name, data ); + }, - // Unbind all events (on this namespace, if provided) for the element - if ( !type ) { - for ( type in events ) { - jQuery.event.remove( elem, type + types[ t ], handler, selector, true ); - } - continue; - } + _removeData: function( elem, name ) { + dataPriv.remove( elem, name ); + } + } ); - special = jQuery.event.special[ type ] || {}; - type = ( selector ? special.delegateType : special.bindType ) || type; - handlers = events[ type ] || []; - tmp = tmp[2] && new RegExp( "(^|\\.)" + namespaces.join("\\.(?:.*\\.|)") + "(\\.|$)" ); + jQuery.fn.extend( { + data: function( key, value ) { + var i, name, data, + elem = this[ 0 ], + attrs = elem && elem.attributes; - // Remove matching events - origCount = j = handlers.length; - while ( j-- ) { - handleObj = handlers[ j ]; + // Gets all values + if ( key === undefined ) { + if ( this.length ) { + data = dataUser.get( elem ); - if ( ( mappedTypes || origType === handleObj.origType ) && - ( !handler || handler.guid === handleObj.guid ) && - ( !tmp || tmp.test( handleObj.namespace ) ) && - ( !selector || selector === handleObj.selector || selector === "**" && handleObj.selector ) ) { - handlers.splice( j, 1 ); + if ( elem.nodeType === 1 && !dataPriv.get( elem, "hasDataAttrs" ) ) { + i = attrs.length; + while ( i-- ) { - if ( handleObj.selector ) { - handlers.delegateCount--; - } - if ( special.remove ) { - special.remove.call( elem, handleObj ); + // Support: IE 11 only + // The attrs elements can be null (#14894) + if ( attrs[ i ] ) { + name = attrs[ i ].name; + if ( name.indexOf( "data-" ) === 0 ) { + name = camelCase( name.slice( 5 ) ); + dataAttr( elem, name, data[ name ] ); + } + } + } + dataPriv.set( elem, "hasDataAttrs", true ); } } - } - - // Remove generic event handler if we removed something and no more handlers exist - // (avoids potential for endless recursion during removal of special event handlers) - if ( origCount && !handlers.length ) { - if ( !special.teardown || special.teardown.call( elem, namespaces, elemData.handle ) === false ) { - jQuery.removeEvent( elem, type, elemData.handle ); - } - delete events[ type ]; + return data; } - } - - // Remove the expando if it's no longer used - if ( jQuery.isEmptyObject( events ) ) { - delete elemData.handle; - // removeData also checks for emptiness and clears the expando if empty - // so use it instead of delete - jQuery._removeData( elem, "events" ); - } - }, + // Sets multiple values + if ( typeof key === "object" ) { + return this.each( function() { + dataUser.set( this, key ); + } ); + } - trigger: function( event, data, elem, onlyHandlers ) { - var handle, ontype, cur, - bubbleType, special, tmp, i, - eventPath = [ elem || document ], - type = hasOwn.call( event, "type" ) ? event.type : event, - namespaces = hasOwn.call( event, "namespace" ) ? event.namespace.split(".") : []; + return access( this, function( value ) { + var data; - cur = tmp = elem = elem || document; + // The calling jQuery object (element matches) is not empty + // (and therefore has an element appears at this[ 0 ]) and the + // `value` parameter was not undefined. An empty jQuery object + // will result in `undefined` for elem = this[ 0 ] which will + // throw an exception if an attempt to read a data cache is made. + if ( elem && value === undefined ) { - // Don't do events on text and comment nodes - if ( elem.nodeType === 3 || elem.nodeType === 8 ) { - return; - } + // Attempt to get data from the cache + // The key will always be camelCased in Data + data = dataUser.get( elem, key ); + if ( data !== undefined ) { + return data; + } - // focus/blur morphs to focusin/out; ensure we're not firing them right now - if ( rfocusMorph.test( type + jQuery.event.triggered ) ) { - return; - } + // Attempt to "discover" the data in + // HTML5 custom data-* attrs + data = dataAttr( elem, key ); + if ( data !== undefined ) { + return data; + } - if ( type.indexOf(".") >= 0 ) { - // Namespaced trigger; create a regexp to match event type in handle() - namespaces = type.split("."); - type = namespaces.shift(); - namespaces.sort(); - } - ontype = type.indexOf(":") < 0 && "on" + type; + // We tried really hard, but the data doesn't exist. + return; + } - // Caller can pass in a jQuery.Event object, Object, or just an event type string - event = event[ jQuery.expando ] ? - event : - new jQuery.Event( type, typeof event === "object" && event ); + // Set the data... + this.each( function() { - // Trigger bitmask: & 1 for native handlers; & 2 for jQuery (always true) - event.isTrigger = onlyHandlers ? 2 : 3; - event.namespace = namespaces.join("."); - event.namespace_re = event.namespace ? - new RegExp( "(^|\\.)" + namespaces.join("\\.(?:.*\\.|)") + "(\\.|$)" ) : - null; + // We always store the camelCased key + dataUser.set( this, key, value ); + } ); + }, null, value, arguments.length > 1, null, true ); + }, - // Clean up the event in case it is being reused - event.result = undefined; - if ( !event.target ) { - event.target = elem; + removeData: function( key ) { + return this.each( function() { + dataUser.remove( this, key ); + } ); } + } ); - // Clone any incoming data and prepend the event, creating the handler arg list - data = data == null ? - [ event ] : - jQuery.makeArray( data, [ event ] ); - // Allow special events to draw outside the lines - special = jQuery.event.special[ type ] || {}; - if ( !onlyHandlers && special.trigger && special.trigger.apply( elem, data ) === false ) { - return; - } + jQuery.extend( { + queue: function( elem, type, data ) { + var queue; - // Determine event propagation path in advance, per W3C events spec (#9951) - // Bubble up to document, then to window; watch for a global ownerDocument var (#9724) - if ( !onlyHandlers && !special.noBubble && !jQuery.isWindow( elem ) ) { + if ( elem ) { + type = ( type || "fx" ) + "queue"; + queue = dataPriv.get( elem, type ); - bubbleType = special.delegateType || type; - if ( !rfocusMorph.test( bubbleType + type ) ) { - cur = cur.parentNode; - } - for ( ; cur; cur = cur.parentNode ) { - eventPath.push( cur ); - tmp = cur; + // Speed up dequeue by getting out quickly if this is just a lookup + if ( data ) { + if ( !queue || Array.isArray( data ) ) { + queue = dataPriv.access( elem, type, jQuery.makeArray( data ) ); + } else { + queue.push( data ); + } + } + return queue || []; } + }, + + dequeue: function( elem, type ) { + type = type || "fx"; + + var queue = jQuery.queue( elem, type ), + startLength = queue.length, + fn = queue.shift(), + hooks = jQuery._queueHooks( elem, type ), + next = function() { + jQuery.dequeue( elem, type ); + }; - // Only add window if we got to document (e.g., not plain obj or detached DOM) - if ( tmp === (elem.ownerDocument || document) ) { - eventPath.push( tmp.defaultView || tmp.parentWindow || window ); + // If the fx queue is dequeued, always remove the progress sentinel + if ( fn === "inprogress" ) { + fn = queue.shift(); + startLength--; } - } - // Fire handlers on the event path - i = 0; - while ( (cur = eventPath[i++]) && !event.isPropagationStopped() ) { + if ( fn ) { - event.type = i > 1 ? - bubbleType : - special.bindType || type; + // Add a progress sentinel to prevent the fx queue from being + // automatically dequeued + if ( type === "fx" ) { + queue.unshift( "inprogress" ); + } - // jQuery handler - handle = ( jQuery._data( cur, "events" ) || {} )[ event.type ] && jQuery._data( cur, "handle" ); - if ( handle ) { - handle.apply( cur, data ); + // Clear up the last queue stop function + delete hooks.stop; + fn.call( elem, next, hooks ); } - // Native handler - handle = ontype && cur[ ontype ]; - if ( handle && handle.apply && jQuery.acceptData( cur ) ) { - event.result = handle.apply( cur, data ); - if ( event.result === false ) { - event.preventDefault(); - } + if ( !startLength && hooks ) { + hooks.empty.fire(); } + }, + + // Not public - generate a queueHooks object, or return the current one + _queueHooks: function( elem, type ) { + var key = type + "queueHooks"; + return dataPriv.get( elem, key ) || dataPriv.access( elem, key, { + empty: jQuery.Callbacks( "once memory" ).add( function() { + dataPriv.remove( elem, [ type + "queue", key ] ); + } ) + } ); } - event.type = type; + } ); - // If nobody prevented the default action, do it now - if ( !onlyHandlers && !event.isDefaultPrevented() ) { + jQuery.fn.extend( { + queue: function( type, data ) { + var setter = 2; - if ( (!special._default || special._default.apply( eventPath.pop(), data ) === false) && - jQuery.acceptData( elem ) ) { + if ( typeof type !== "string" ) { + data = type; + type = "fx"; + setter--; + } - // Call a native DOM method on the target with the same name name as the event. - // Can't use an .isFunction() check here because IE6/7 fails that test. - // Don't do default actions on window, that's where global variables be (#6170) - if ( ontype && elem[ type ] && !jQuery.isWindow( elem ) ) { + if ( arguments.length < setter ) { + return jQuery.queue( this[ 0 ], type ); + } - // Don't re-trigger an onFOO event when we call its FOO() method - tmp = elem[ ontype ]; + return data === undefined ? + this : + this.each( function() { + var queue = jQuery.queue( this, type, data ); - if ( tmp ) { - elem[ ontype ] = null; - } + // Ensure a hooks for this queue + jQuery._queueHooks( this, type ); - // Prevent re-triggering of the same event, since we already bubbled it above - jQuery.event.triggered = type; - try { - elem[ type ](); - } catch ( e ) { - // IE<9 dies on focus/blur to hidden element (#1486,#12518) - // only reproducible on winXP IE8 native, not IE9 in IE8 mode + if ( type === "fx" && queue[ 0 ] !== "inprogress" ) { + jQuery.dequeue( this, type ); } - jQuery.event.triggered = undefined; + } ); + }, + dequeue: function( type ) { + return this.each( function() { + jQuery.dequeue( this, type ); + } ); + }, + clearQueue: function( type ) { + return this.queue( type || "fx", [] ); + }, - if ( tmp ) { - elem[ ontype ] = tmp; + // Get a promise resolved when queues of a certain type + // are emptied (fx is the type by default) + promise: function( type, obj ) { + var tmp, + count = 1, + defer = jQuery.Deferred(), + elements = this, + i = this.length, + resolve = function() { + if ( !( --count ) ) { + defer.resolveWith( elements, [ elements ] ); } + }; + + if ( typeof type !== "string" ) { + obj = type; + type = undefined; + } + type = type || "fx"; + + while ( i-- ) { + tmp = dataPriv.get( elements[ i ], type + "queueHooks" ); + if ( tmp && tmp.empty ) { + count++; + tmp.empty.add( resolve ); } } + resolve(); + return defer.promise( obj ); } + } ); + var pnum = ( /[+-]?(?:\d*\.|)\d+(?:[eE][+-]?\d+|)/ ).source; - return event.result; - }, + var rcssNum = new RegExp( "^(?:([+-])=|)(" + pnum + ")([a-z%]*)$", "i" ); - dispatch: function( event ) { - // Make a writable jQuery.Event from the native event object - event = jQuery.event.fix( event ); + var cssExpand = [ "Top", "Right", "Bottom", "Left" ]; - var i, ret, handleObj, matched, j, - handlerQueue = [], - args = slice.call( arguments ), - handlers = ( jQuery._data( this, "events" ) || {} )[ event.type ] || [], - special = jQuery.event.special[ event.type ] || {}; + var documentElement = document.documentElement; - // Use the fix-ed jQuery.Event rather than the (read-only) native event - args[0] = event; - event.delegateTarget = this; - // Call the preDispatch hook for the mapped type, and let it bail if desired - if ( special.preDispatch && special.preDispatch.call( this, event ) === false ) { - return; - } - // Determine handlers - handlerQueue = jQuery.event.handlers.call( this, event, handlers ); + var isAttached = function( elem ) { + return jQuery.contains( elem.ownerDocument, elem ); + }, + composed = { composed: true }; + + // Support: IE 9 - 11+, Edge 12 - 18+, iOS 10.0 - 10.2 only + // Check attachment across shadow DOM boundaries when possible (gh-3504) + // Support: iOS 10.0-10.2 only + // Early iOS 10 versions support `attachShadow` but not `getRootNode`, + // leading to errors. We need to check for `getRootNode`. + if ( documentElement.getRootNode ) { + isAttached = function( elem ) { + return jQuery.contains( elem.ownerDocument, elem ) || + elem.getRootNode( composed ) === elem.ownerDocument; + }; + } + var isHiddenWithinTree = function( elem, el ) { - // Run delegates first; they may want to stop propagation beneath us - i = 0; - while ( (matched = handlerQueue[ i++ ]) && !event.isPropagationStopped() ) { - event.currentTarget = matched.elem; + // isHiddenWithinTree might be called from jQuery#filter function; + // in that case, element will be second argument + elem = el || elem; - j = 0; - while ( (handleObj = matched.handlers[ j++ ]) && !event.isImmediatePropagationStopped() ) { + // Inline style trumps all + return elem.style.display === "none" || + elem.style.display === "" && - // Triggered event must either 1) have no namespace, or - // 2) have namespace(s) a subset or equal to those in the bound event (both can have no namespace). - if ( !event.namespace_re || event.namespace_re.test( handleObj.namespace ) ) { + // Otherwise, check computed style + // Support: Firefox <=43 - 45 + // Disconnected elements can have computed display: none, so first confirm that elem is + // in the document. + isAttached( elem ) && - event.handleObj = handleObj; - event.data = handleObj.data; + jQuery.css( elem, "display" ) === "none"; + }; - ret = ( (jQuery.event.special[ handleObj.origType ] || {}).handle || handleObj.handler ) - .apply( matched.elem, args ); - if ( ret !== undefined ) { - if ( (event.result = ret) === false ) { - event.preventDefault(); - event.stopPropagation(); - } - } - } - } - } - // Call the postDispatch hook for the mapped type - if ( special.postDispatch ) { - special.postDispatch.call( this, event ); - } + function adjustCSS( elem, prop, valueParts, tween ) { + var adjusted, scale, + maxIterations = 20, + currentValue = tween ? + function() { + return tween.cur(); + } : + function() { + return jQuery.css( elem, prop, "" ); + }, + initial = currentValue(), + unit = valueParts && valueParts[ 3 ] || ( jQuery.cssNumber[ prop ] ? "" : "px" ), - return event.result; - }, + // Starting value computation is required for potential unit mismatches + initialInUnit = elem.nodeType && + ( jQuery.cssNumber[ prop ] || unit !== "px" && +initial ) && + rcssNum.exec( jQuery.css( elem, prop ) ); - handlers: function( event, handlers ) { - var sel, handleObj, matches, i, - handlerQueue = [], - delegateCount = handlers.delegateCount, - cur = event.target; + if ( initialInUnit && initialInUnit[ 3 ] !== unit ) { - // Find delegate handlers - // Black-hole SVG instance trees (#13180) - // Avoid non-left-click bubbling in Firefox (#3861) - if ( delegateCount && cur.nodeType && (!event.button || event.type !== "click") ) { + // Support: Firefox <=54 + // Halve the iteration target value to prevent interference from CSS upper bounds (gh-2144) + initial = initial / 2; - /* jshint eqeqeq: false */ - for ( ; cur != this; cur = cur.parentNode || this ) { - /* jshint eqeqeq: true */ + // Trust units reported by jQuery.css + unit = unit || initialInUnit[ 3 ]; - // Don't check non-elements (#13208) - // Don't process clicks on disabled elements (#6911, #8165, #11382, #11764) - if ( cur.nodeType === 1 && (cur.disabled !== true || event.type !== "click") ) { - matches = []; - for ( i = 0; i < delegateCount; i++ ) { - handleObj = handlers[ i ]; + // Iteratively approximate from a nonzero starting point + initialInUnit = +initial || 1; - // Don't conflict with Object.prototype properties (#13203) - sel = handleObj.selector + " "; + while ( maxIterations-- ) { - if ( matches[ sel ] === undefined ) { - matches[ sel ] = handleObj.needsContext ? - jQuery( sel, this ).index( cur ) >= 0 : - jQuery.find( sel, this, null, [ cur ] ).length; - } - if ( matches[ sel ] ) { - matches.push( handleObj ); - } - } - if ( matches.length ) { - handlerQueue.push({ elem: cur, handlers: matches }); - } + // Evaluate and update our best guess (doubling guesses that zero out). + // Finish if the scale equals or crosses 1 (making the old*new product non-positive). + jQuery.style( elem, prop, initialInUnit + unit ); + if ( ( 1 - scale ) * ( 1 - ( scale = currentValue() / initial || 0.5 ) ) <= 0 ) { + maxIterations = 0; } - } - } + initialInUnit = initialInUnit / scale; - // Add the remaining (directly-bound) handlers - if ( delegateCount < handlers.length ) { - handlerQueue.push({ elem: this, handlers: handlers.slice( delegateCount ) }); - } + } - return handlerQueue; - }, + initialInUnit = initialInUnit * 2; + jQuery.style( elem, prop, initialInUnit + unit ); - fix: function( event ) { - if ( event[ jQuery.expando ] ) { - return event; + // Make sure we update the tween properties later on + valueParts = valueParts || []; } - // Create a writable copy of the event object and normalize some properties - var i, prop, copy, - type = event.type, - originalEvent = event, - fixHook = this.fixHooks[ type ]; + if ( valueParts ) { + initialInUnit = +initialInUnit || +initial || 0; - if ( !fixHook ) { - this.fixHooks[ type ] = fixHook = - rmouseEvent.test( type ) ? this.mouseHooks : - rkeyEvent.test( type ) ? this.keyHooks : - {}; + // Apply relative offset (+=/-=) if specified + adjusted = valueParts[ 1 ] ? + initialInUnit + ( valueParts[ 1 ] + 1 ) * valueParts[ 2 ] : + +valueParts[ 2 ]; + if ( tween ) { + tween.unit = unit; + tween.start = initialInUnit; + tween.end = adjusted; + } } - copy = fixHook.props ? this.props.concat( fixHook.props ) : this.props; + return adjusted; + } - event = new jQuery.Event( originalEvent ); - i = copy.length; - while ( i-- ) { - prop = copy[ i ]; - event[ prop ] = originalEvent[ prop ]; - } + var defaultDisplayMap = {}; - // Support: IE<9 - // Fix target property (#1925) - if ( !event.target ) { - event.target = originalEvent.srcElement || document; - } + function getDefaultDisplay( elem ) { + var temp, + doc = elem.ownerDocument, + nodeName = elem.nodeName, + display = defaultDisplayMap[ nodeName ]; - // Support: Chrome 23+, Safari? - // Target should not be a text node (#504, #13143) - if ( event.target.nodeType === 3 ) { - event.target = event.target.parentNode; + if ( display ) { + return display; } - // Support: IE<9 - // For mouse/key events, metaKey==false if it's undefined (#3368, #11328) - event.metaKey = !!event.metaKey; - - return fixHook.filter ? fixHook.filter( event, originalEvent ) : event; - }, - - // Includes some event props shared by KeyEvent and MouseEvent - props: "altKey bubbles cancelable ctrlKey currentTarget eventPhase metaKey relatedTarget shiftKey target timeStamp view which".split(" "), - - fixHooks: {}, - - keyHooks: { - props: "char charCode key keyCode".split(" "), - filter: function( event, original ) { + temp = doc.body.appendChild( doc.createElement( nodeName ) ); + display = jQuery.css( temp, "display" ); - // Add which for key events - if ( event.which == null ) { - event.which = original.charCode != null ? original.charCode : original.keyCode; - } + temp.parentNode.removeChild( temp ); - return event; + if ( display === "none" ) { + display = "block"; } - }, - - mouseHooks: { - props: "button buttons clientX clientY fromElement offsetX offsetY pageX pageY screenX screenY toElement".split(" "), - filter: function( event, original ) { - var body, eventDoc, doc, - button = original.button, - fromElement = original.fromElement; + defaultDisplayMap[ nodeName ] = display; - // Calculate pageX/Y if missing and clientX/Y available - if ( event.pageX == null && original.clientX != null ) { - eventDoc = event.target.ownerDocument || document; - doc = eventDoc.documentElement; - body = eventDoc.body; - - event.pageX = original.clientX + ( doc && doc.scrollLeft || body && body.scrollLeft || 0 ) - ( doc && doc.clientLeft || body && body.clientLeft || 0 ); - event.pageY = original.clientY + ( doc && doc.scrollTop || body && body.scrollTop || 0 ) - ( doc && doc.clientTop || body && body.clientTop || 0 ); - } + return display; + } - // Add relatedTarget, if necessary - if ( !event.relatedTarget && fromElement ) { - event.relatedTarget = fromElement === event.target ? original.toElement : fromElement; - } + function showHide( elements, show ) { + var display, elem, + values = [], + index = 0, + length = elements.length; - // Add which for click: 1 === left; 2 === middle; 3 === right - // Note: button is not normalized, so don't use it - if ( !event.which && button !== undefined ) { - event.which = ( button & 1 ? 1 : ( button & 2 ? 3 : ( button & 4 ? 2 : 0 ) ) ); + // Determine new display value for elements that need to change + for ( ; index < length; index++ ) { + elem = elements[ index ]; + if ( !elem.style ) { + continue; } - return event; - } - }, + display = elem.style.display; + if ( show ) { - special: { - load: { - // Prevent triggered image.load events from bubbling to window.load - noBubble: true - }, - focus: { - // Fire native event if possible so blur/focus sequence is correct - trigger: function() { - if ( this !== safeActiveElement() && this.focus ) { - try { - this.focus(); - return false; - } catch ( e ) { - // Support: IE<9 - // If we error on focus to hidden element (#1486, #12518), - // let .trigger() run the handlers + // Since we force visibility upon cascade-hidden elements, an immediate (and slow) + // check is required in this first loop unless we have a nonempty display value (either + // inline or about-to-be-restored) + if ( display === "none" ) { + values[ index ] = dataPriv.get( elem, "display" ) || null; + if ( !values[ index ] ) { + elem.style.display = ""; } } - }, - delegateType: "focusin" - }, - blur: { - trigger: function() { - if ( this === safeActiveElement() && this.blur ) { - this.blur(); - return false; - } - }, - delegateType: "focusout" - }, - click: { - // For checkbox, fire native event so checked state will be right - trigger: function() { - if ( jQuery.nodeName( this, "input" ) && this.type === "checkbox" && this.click ) { - this.click(); - return false; + if ( elem.style.display === "" && isHiddenWithinTree( elem ) ) { + values[ index ] = getDefaultDisplay( elem ); } - }, - - // For cross-browser consistency, don't fire native .click() on links - _default: function( event ) { - return jQuery.nodeName( event.target, "a" ); - } - }, - - beforeunload: { - postDispatch: function( event ) { + } else { + if ( display !== "none" ) { + values[ index ] = "none"; - // Support: Firefox 20+ - // Firefox doesn't alert if the returnValue field is not set. - if ( event.result !== undefined && event.originalEvent ) { - event.originalEvent.returnValue = event.result; + // Remember what we're overwriting + dataPriv.set( elem, "display", display ); } } } - }, - simulate: function( type, elem, event, bubble ) { - // Piggyback on a donor event to simulate a different one. - // Fake originalEvent to avoid donor's stopPropagation, but if the - // simulated event prevents default then we do the same on the donor. - var e = jQuery.extend( - new jQuery.Event(), - event, - { - type: type, - isSimulated: true, - originalEvent: {} + // Set the display of the elements in a second loop to avoid constant reflow + for ( index = 0; index < length; index++ ) { + if ( values[ index ] != null ) { + elements[ index ].style.display = values[ index ]; } - ); - if ( bubble ) { - jQuery.event.trigger( e, null, elem ); - } else { - jQuery.event.dispatch.call( elem, e ); - } - if ( e.isDefaultPrevented() ) { - event.preventDefault(); } + + return elements; } -}; -jQuery.removeEvent = document.removeEventListener ? - function( elem, type, handle ) { - if ( elem.removeEventListener ) { - elem.removeEventListener( type, handle, false ); + jQuery.fn.extend( { + show: function() { + return showHide( this, true ); + }, + hide: function() { + return showHide( this ); + }, + toggle: function( state ) { + if ( typeof state === "boolean" ) { + return state ? this.show() : this.hide(); + } + + return this.each( function() { + if ( isHiddenWithinTree( this ) ) { + jQuery( this ).show(); + } else { + jQuery( this ).hide(); + } + } ); } - } : - function( elem, type, handle ) { - var name = "on" + type; + } ); + var rcheckableType = ( /^(?:checkbox|radio)$/i ); - if ( elem.detachEvent ) { + var rtagName = ( /<([a-z][^\/\0>\x20\t\r\n\f]*)/i ); - // #8545, #7054, preventing memory leaks for custom events in IE6-8 - // detachEvent needed property on element, by name of that event, to properly expose it to GC - if ( typeof elem[ name ] === strundefined ) { - elem[ name ] = null; - } + var rscriptType = ( /^$|^module$|\/(?:java|ecma)script/i ); - elem.detachEvent( name, handle ); - } - }; -jQuery.Event = function( src, props ) { - // Allow instantiation without the 'new' keyword - if ( !(this instanceof jQuery.Event) ) { - return new jQuery.Event( src, props ); - } - // Event object - if ( src && src.type ) { - this.originalEvent = src; - this.type = src.type; - - // Events bubbling up the document may have been marked as prevented - // by a handler lower down the tree; reflect the correct value. - this.isDefaultPrevented = src.defaultPrevented || - src.defaultPrevented === undefined && - // Support: IE < 9, Android < 4.0 - src.returnValue === false ? - returnTrue : - returnFalse; - - // Event type - } else { - this.type = src; - } + ( function() { + var fragment = document.createDocumentFragment(), + div = fragment.appendChild( document.createElement( "div" ) ), + input = document.createElement( "input" ); - // Put explicitly provided properties onto the event object - if ( props ) { - jQuery.extend( this, props ); - } + // Support: Android 4.0 - 4.3 only + // Check state lost if the name is set (#11217) + // Support: Windows Web Apps (WWA) + // `name` and `type` must use .setAttribute for WWA (#14901) + input.setAttribute( "type", "radio" ); + input.setAttribute( "checked", "checked" ); + input.setAttribute( "name", "t" ); - // Create a timestamp if incoming event doesn't have one - this.timeStamp = src && src.timeStamp || jQuery.now(); + div.appendChild( input ); - // Mark it as fixed - this[ jQuery.expando ] = true; -}; + // Support: Android <=4.1 only + // Older WebKit doesn't clone checked state correctly in fragments + support.checkClone = div.cloneNode( true ).cloneNode( true ).lastChild.checked; -// jQuery.Event is based on DOM3 Events as specified by the ECMAScript Language Binding -// http://www.w3.org/TR/2003/WD-DOM-Level-3-Events-20030331/ecma-script-binding.html -jQuery.Event.prototype = { - isDefaultPrevented: returnFalse, - isPropagationStopped: returnFalse, - isImmediatePropagationStopped: returnFalse, + // Support: IE <=11 only + // Make sure textarea (and checkbox) defaultValue is properly cloned + div.innerHTML = ""; + support.noCloneChecked = !!div.cloneNode( true ).lastChild.defaultValue; - preventDefault: function() { - var e = this.originalEvent; + // Support: IE <=9 only + // IE <=9 replaces "; + support.option = !!div.lastChild; + } )(); - this.isDefaultPrevented = returnTrue; - if ( !e ) { - return; - } - // If preventDefault exists, run it on the original event - if ( e.preventDefault ) { - e.preventDefault(); +// We have to close these tags to support XHTML (#13200) + var wrapMap = { + + // XHTML parsers do not magically insert elements in the + // same way that tag soup parsers do. So we cannot shorten + // this by omitting or other required elements. + thead: [ 1, "", "
" ], + col: [ 2, "", "
" ], + tr: [ 2, "", "
" ], + td: [ 3, "", "
" ], + + _default: [ 0, "", "" ] + }; + + wrapMap.tbody = wrapMap.tfoot = wrapMap.colgroup = wrapMap.caption = wrapMap.thead; + wrapMap.th = wrapMap.td; + +// Support: IE <=9 only + if ( !support.option ) { + wrapMap.optgroup = wrapMap.option = [ 1, "" ]; + } + + + function getAll( context, tag ) { + + // Support: IE <=9 - 11 only + // Use typeof to avoid zero-argument method invocation on host objects (#15151) + var ret; + + if ( typeof context.getElementsByTagName !== "undefined" ) { + ret = context.getElementsByTagName( tag || "*" ); + + } else if ( typeof context.querySelectorAll !== "undefined" ) { + ret = context.querySelectorAll( tag || "*" ); - // Support: IE - // Otherwise set the returnValue property of the original event to false } else { - e.returnValue = false; + ret = []; } - }, - stopPropagation: function() { - var e = this.originalEvent; - this.isPropagationStopped = returnTrue; - if ( !e ) { - return; - } - // If stopPropagation exists, run it on the original event - if ( e.stopPropagation ) { - e.stopPropagation(); + if ( tag === undefined || tag && nodeName( context, tag ) ) { + return jQuery.merge( [ context ], ret ); } - // Support: IE - // Set the cancelBubble property of the original event to true - e.cancelBubble = true; - }, - stopImmediatePropagation: function() { - var e = this.originalEvent; + return ret; + } + - this.isImmediatePropagationStopped = returnTrue; +// Mark scripts as having already been evaluated + function setGlobalEval( elems, refElements ) { + var i = 0, + l = elems.length; - if ( e && e.stopImmediatePropagation ) { - e.stopImmediatePropagation(); + for ( ; i < l; i++ ) { + dataPriv.set( + elems[ i ], + "globalEval", + !refElements || dataPriv.get( refElements[ i ], "globalEval" ) + ); } - - this.stopPropagation(); } -}; -// Create mouseenter/leave events using mouseover/out and event-time checks -jQuery.each({ - mouseenter: "mouseover", - mouseleave: "mouseout", - pointerenter: "pointerover", - pointerleave: "pointerout" -}, function( orig, fix ) { - jQuery.event.special[ orig ] = { - delegateType: fix, - bindType: fix, - - handle: function( event ) { - var ret, - target = this, - related = event.relatedTarget, - handleObj = event.handleObj; - - // For mousenter/leave call the handler if related is outside the target. - // NB: No relatedTarget if the mouse left/entered the browser window - if ( !related || (related !== target && !jQuery.contains( target, related )) ) { - event.type = handleObj.origType; - ret = handleObj.handler.apply( this, arguments ); - event.type = fix; - } - return ret; - } - }; -}); -// IE submit delegation -if ( !support.submitBubbles ) { + var rhtml = /<|&#?\w+;/; - jQuery.event.special.submit = { - setup: function() { - // Only need this for delegated form submit events - if ( jQuery.nodeName( this, "form" ) ) { - return false; - } + function buildFragment( elems, context, scripts, selection, ignored ) { + var elem, tmp, tag, wrap, attached, j, + fragment = context.createDocumentFragment(), + nodes = [], + i = 0, + l = elems.length; - // Lazy-add a submit handler when a descendant form may potentially be submitted - jQuery.event.add( this, "click._submit keypress._submit", function( e ) { - // Node name check avoids a VML-related crash in IE (#9807) - var elem = e.target, - form = jQuery.nodeName( elem, "input" ) || jQuery.nodeName( elem, "button" ) ? elem.form : undefined; - if ( form && !jQuery._data( form, "submitBubbles" ) ) { - jQuery.event.add( form, "submit._submit", function( event ) { - event._submit_bubble = true; - }); - jQuery._data( form, "submitBubbles", true ); - } - }); - // return undefined since we don't need an event listener - }, + for ( ; i < l; i++ ) { + elem = elems[ i ]; - postDispatch: function( event ) { - // If form was submitted by the user, bubble the event up the tree - if ( event._submit_bubble ) { - delete event._submit_bubble; - if ( this.parentNode && !event.isTrigger ) { - jQuery.event.simulate( "submit", this.parentNode, event, true ); - } - } - }, + if ( elem || elem === 0 ) { - teardown: function() { - // Only need this for delegated form submit events - if ( jQuery.nodeName( this, "form" ) ) { - return false; - } + // Add nodes directly + if ( toType( elem ) === "object" ) { - // Remove delegated handlers; cleanData eventually reaps submit handlers attached above - jQuery.event.remove( this, "._submit" ); - } - }; -} + // Support: Android <=4.0 only, PhantomJS 1 only + // push.apply(_, arraylike) throws on ancient WebKit + jQuery.merge( nodes, elem.nodeType ? [ elem ] : elem ); -// IE change delegation and checkbox/radio fix -if ( !support.changeBubbles ) { + // Convert non-html into a text node + } else if ( !rhtml.test( elem ) ) { + nodes.push( context.createTextNode( elem ) ); - jQuery.event.special.change = { + // Convert html into DOM nodes + } else { + tmp = tmp || fragment.appendChild( context.createElement( "div" ) ); - setup: function() { + // Deserialize a standard representation + tag = ( rtagName.exec( elem ) || [ "", "" ] )[ 1 ].toLowerCase(); + wrap = wrapMap[ tag ] || wrapMap._default; + tmp.innerHTML = wrap[ 1 ] + jQuery.htmlPrefilter( elem ) + wrap[ 2 ]; - if ( rformElems.test( this.nodeName ) ) { - // IE doesn't fire change on a check/radio until blur; trigger it on click - // after a propertychange. Eat the blur-change in special.change.handle. - // This still fires onchange a second time for check/radio after blur. - if ( this.type === "checkbox" || this.type === "radio" ) { - jQuery.event.add( this, "propertychange._change", function( event ) { - if ( event.originalEvent.propertyName === "checked" ) { - this._just_changed = true; - } - }); - jQuery.event.add( this, "click._change", function( event ) { - if ( this._just_changed && !event.isTrigger ) { - this._just_changed = false; - } - // Allow triggered, simulated change events (#11500) - jQuery.event.simulate( "change", this, event, true ); - }); + // Descend through wrappers to the right content + j = wrap[ 0 ]; + while ( j-- ) { + tmp = tmp.lastChild; + } + + // Support: Android <=4.0 only, PhantomJS 1 only + // push.apply(_, arraylike) throws on ancient WebKit + jQuery.merge( nodes, tmp.childNodes ); + + // Remember the top-level container + tmp = fragment.firstChild; + + // Ensure the created nodes are orphaned (#12392) + tmp.textContent = ""; } - return false; } - // Delegated event; lazy-add a change handler on descendant inputs - jQuery.event.add( this, "beforeactivate._change", function( e ) { - var elem = e.target; + } - if ( rformElems.test( elem.nodeName ) && !jQuery._data( elem, "changeBubbles" ) ) { - jQuery.event.add( elem, "change._change", function( event ) { - if ( this.parentNode && !event.isSimulated && !event.isTrigger ) { - jQuery.event.simulate( "change", this.parentNode, event, true ); - } - }); - jQuery._data( elem, "changeBubbles", true ); - } - }); - }, + // Remove wrapper from fragment + fragment.textContent = ""; - handle: function( event ) { - var elem = event.target; + i = 0; + while ( ( elem = nodes[ i++ ] ) ) { - // Swallow native change events from checkbox/radio, we already triggered them above - if ( this !== elem || event.isSimulated || event.isTrigger || (elem.type !== "radio" && elem.type !== "checkbox") ) { - return event.handleObj.handler.apply( this, arguments ); + // Skip elements already in the context collection (trac-4087) + if ( selection && jQuery.inArray( elem, selection ) > -1 ) { + if ( ignored ) { + ignored.push( elem ); + } + continue; } - }, - teardown: function() { - jQuery.event.remove( this, "._change" ); + attached = isAttached( elem ); + + // Append to fragment + tmp = getAll( fragment.appendChild( elem ), "script" ); + + // Preserve script evaluation history + if ( attached ) { + setGlobalEval( tmp ); + } - return !rformElems.test( this.nodeName ); + // Capture executables + if ( scripts ) { + j = 0; + while ( ( elem = tmp[ j++ ] ) ) { + if ( rscriptType.test( elem.type || "" ) ) { + scripts.push( elem ); + } + } + } } - }; -} -// Create "bubbling" focus and blur events -if ( !support.focusinBubbles ) { - jQuery.each({ focus: "focusin", blur: "focusout" }, function( orig, fix ) { + return fragment; + } + - // Attach a single capturing handler on the document while someone wants focusin/focusout - var handler = function( event ) { - jQuery.event.simulate( fix, event.target, jQuery.event.fix( event ), true ); - }; + var rtypenamespace = /^([^.]*)(?:\.(.+)|)/; - jQuery.event.special[ fix ] = { - setup: function() { - var doc = this.ownerDocument || this, - attaches = jQuery._data( doc, fix ); + function returnTrue() { + return true; + } - if ( !attaches ) { - doc.addEventListener( orig, handler, true ); - } - jQuery._data( doc, fix, ( attaches || 0 ) + 1 ); - }, - teardown: function() { - var doc = this.ownerDocument || this, - attaches = jQuery._data( doc, fix ) - 1; + function returnFalse() { + return false; + } - if ( !attaches ) { - doc.removeEventListener( orig, handler, true ); - jQuery._removeData( doc, fix ); - } else { - jQuery._data( doc, fix, attaches ); - } - } - }; - }); -} +// Support: IE <=9 - 11+ +// focus() and blur() are asynchronous, except when they are no-op. +// So expect focus to be synchronous when the element is already active, +// and blur to be synchronous when the element is not already active. +// (focus and blur are always synchronous in other supported browsers, +// this just defines when we can count on it). + function expectSync( elem, type ) { + return ( elem === safeActiveElement() ) === ( type === "focus" ); + } -jQuery.fn.extend({ +// Support: IE <=9 only +// Accessing document.activeElement can throw unexpectedly +// https://bugs.jquery.com/ticket/13393 + function safeActiveElement() { + try { + return document.activeElement; + } catch ( err ) { } + } - on: function( types, selector, data, fn, /*INTERNAL*/ one ) { - var type, origFn; + function on( elem, types, selector, data, fn, one ) { + var origFn, type; // Types can be a map of types/handlers if ( typeof types === "object" ) { + // ( types-Object, selector, data ) if ( typeof selector !== "string" ) { + // ( types-Object, data ) data = data || selector; selector = undefined; } for ( type in types ) { - this.on( type, selector, data, types[ type ], one ); + on( elem, type, selector, data, types[ type ], one ); } - return this; + return elem; } if ( data == null && fn == null ) { + // ( types, fn ) fn = selector; data = selector = undefined; } else if ( fn == null ) { if ( typeof selector === "string" ) { + // ( types, selector, fn ) fn = data; data = undefined; } else { + // ( types, data, fn ) fn = data; data = selector; @@ -5232,722 +5163,913 @@ jQuery.fn.extend({ if ( fn === false ) { fn = returnFalse; } else if ( !fn ) { - return this; + return elem; } if ( one === 1 ) { origFn = fn; fn = function( event ) { + // Can use an empty set, since event contains the info jQuery().off( event ); return origFn.apply( this, arguments ); }; + // Use same guid so caller can remove using origFn fn.guid = origFn.guid || ( origFn.guid = jQuery.guid++ ); } - return this.each( function() { + return elem.each( function() { jQuery.event.add( this, types, fn, data, selector ); - }); - }, - one: function( types, selector, data, fn ) { - return this.on( types, selector, data, fn, 1 ); - }, - off: function( types, selector, fn ) { - var handleObj, type; - if ( types && types.preventDefault && types.handleObj ) { - // ( event ) dispatched jQuery.Event - handleObj = types.handleObj; - jQuery( types.delegateTarget ).off( - handleObj.namespace ? handleObj.origType + "." + handleObj.namespace : handleObj.origType, - handleObj.selector, - handleObj.handler - ); - return this; - } - if ( typeof types === "object" ) { - // ( types-object [, selector] ) - for ( type in types ) { - this.off( type, selector, types[ type ] ); - } - return this; - } - if ( selector === false || typeof selector === "function" ) { - // ( types [, fn] ) - fn = selector; - selector = undefined; - } - if ( fn === false ) { - fn = returnFalse; - } - return this.each(function() { - jQuery.event.remove( this, types, fn, selector ); - }); - }, - - trigger: function( type, data ) { - return this.each(function() { - jQuery.event.trigger( type, data, this ); - }); - }, - triggerHandler: function( type, data ) { - var elem = this[0]; - if ( elem ) { - return jQuery.event.trigger( type, data, elem, true ); - } + } ); } -}); + /* + * Helper functions for managing events -- not part of the public interface. + * Props to Dean Edwards' addEvent library for many of the ideas. + */ + jQuery.event = { + + global: {}, -function createSafeFragment( document ) { - var list = nodeNames.split( "|" ), - safeFrag = document.createDocumentFragment(); + add: function( elem, types, handler, data, selector ) { - if ( safeFrag.createElement ) { - while ( list.length ) { - safeFrag.createElement( - list.pop() - ); - } - } - return safeFrag; -} - -var nodeNames = "abbr|article|aside|audio|bdi|canvas|data|datalist|details|figcaption|figure|footer|" + - "header|hgroup|mark|meter|nav|output|progress|section|summary|time|video", - rinlinejQuery = / jQuery\d+="(?:null|\d+)"/g, - rnoshimcache = new RegExp("<(?:" + nodeNames + ")[\\s/>]", "i"), - rleadingWhitespace = /^\s+/, - rxhtmlTag = /<(?!area|br|col|embed|hr|img|input|link|meta|param)(([\w:]+)[^>]*)\/>/gi, - rtagName = /<([\w:]+)/, - rtbody = /\s*$/g, - - // We have to close these tags to support XHTML (#13200) - wrapMap = { - option: [ 1, "" ], - legend: [ 1, "
", "
" ], - area: [ 1, "", "" ], - param: [ 1, "", "" ], - thead: [ 1, "", "
" ], - tr: [ 2, "", "
" ], - col: [ 2, "", "
" ], - td: [ 3, "", "
" ], + var handleObjIn, eventHandle, tmp, + events, t, handleObj, + special, handlers, type, namespaces, origType, + elemData = dataPriv.get( elem ); - // IE6-8 can't serialize link, script, style, or any html5 (NoScope) tags, - // unless wrapped in a div with non-breaking characters in front of it. - _default: support.htmlSerialize ? [ 0, "", "" ] : [ 1, "X
", "
" ] - }, - safeFragment = createSafeFragment( document ), - fragmentDiv = safeFragment.appendChild( document.createElement("div") ); - -wrapMap.optgroup = wrapMap.option; -wrapMap.tbody = wrapMap.tfoot = wrapMap.colgroup = wrapMap.caption = wrapMap.thead; -wrapMap.th = wrapMap.td; - -function getAll( context, tag ) { - var elems, elem, - i = 0, - found = typeof context.getElementsByTagName !== strundefined ? context.getElementsByTagName( tag || "*" ) : - typeof context.querySelectorAll !== strundefined ? context.querySelectorAll( tag || "*" ) : - undefined; - - if ( !found ) { - for ( found = [], elems = context.childNodes || context; (elem = elems[i]) != null; i++ ) { - if ( !tag || jQuery.nodeName( elem, tag ) ) { - found.push( elem ); - } else { - jQuery.merge( found, getAll( elem, tag ) ); + // Only attach events to objects that accept data + if ( !acceptData( elem ) ) { + return; } - } - } - return tag === undefined || tag && jQuery.nodeName( context, tag ) ? - jQuery.merge( [ context ], found ) : - found; -} + // Caller can pass in an object of custom data in lieu of the handler + if ( handler.handler ) { + handleObjIn = handler; + handler = handleObjIn.handler; + selector = handleObjIn.selector; + } -// Used in buildFragment, fixes the defaultChecked property -function fixDefaultChecked( elem ) { - if ( rcheckableType.test( elem.type ) ) { - elem.defaultChecked = elem.checked; - } -} + // Ensure that invalid selectors throw exceptions at attach time + // Evaluate against documentElement in case elem is a non-element node (e.g., document) + if ( selector ) { + jQuery.find.matchesSelector( documentElement, selector ); + } -// Support: IE<8 -// Manipulating tables requires a tbody -function manipulationTarget( elem, content ) { - return jQuery.nodeName( elem, "table" ) && - jQuery.nodeName( content.nodeType !== 11 ? content : content.firstChild, "tr" ) ? + // Make sure that the handler has a unique ID, used to find/remove it later + if ( !handler.guid ) { + handler.guid = jQuery.guid++; + } - elem.getElementsByTagName("tbody")[0] || - elem.appendChild( elem.ownerDocument.createElement("tbody") ) : - elem; -} + // Init the element's event structure and main handler, if this is the first + if ( !( events = elemData.events ) ) { + events = elemData.events = Object.create( null ); + } + if ( !( eventHandle = elemData.handle ) ) { + eventHandle = elemData.handle = function( e ) { -// Replace/restore the type attribute of script elements for safe DOM manipulation -function disableScript( elem ) { - elem.type = (jQuery.find.attr( elem, "type" ) !== null) + "/" + elem.type; - return elem; -} -function restoreScript( elem ) { - var match = rscriptTypeMasked.exec( elem.type ); - if ( match ) { - elem.type = match[1]; - } else { - elem.removeAttribute("type"); - } - return elem; -} + // Discard the second event of a jQuery.event.trigger() and + // when an event is called after a page has unloaded + return typeof jQuery !== "undefined" && jQuery.event.triggered !== e.type ? + jQuery.event.dispatch.apply( elem, arguments ) : undefined; + }; + } -// Mark scripts as having already been evaluated -function setGlobalEval( elems, refElements ) { - var elem, - i = 0; - for ( ; (elem = elems[i]) != null; i++ ) { - jQuery._data( elem, "globalEval", !refElements || jQuery._data( refElements[i], "globalEval" ) ); - } -} + // Handle multiple events separated by a space + types = ( types || "" ).match( rnothtmlwhite ) || [ "" ]; + t = types.length; + while ( t-- ) { + tmp = rtypenamespace.exec( types[ t ] ) || []; + type = origType = tmp[ 1 ]; + namespaces = ( tmp[ 2 ] || "" ).split( "." ).sort(); -function cloneCopyEvent( src, dest ) { + // There *must* be a type, no attaching namespace-only handlers + if ( !type ) { + continue; + } - if ( dest.nodeType !== 1 || !jQuery.hasData( src ) ) { - return; - } + // If event changes its type, use the special event handlers for the changed type + special = jQuery.event.special[ type ] || {}; - var type, i, l, - oldData = jQuery._data( src ), - curData = jQuery._data( dest, oldData ), - events = oldData.events; + // If selector defined, determine special event api type, otherwise given type + type = ( selector ? special.delegateType : special.bindType ) || type; - if ( events ) { - delete curData.handle; - curData.events = {}; + // Update special based on newly reset type + special = jQuery.event.special[ type ] || {}; - for ( type in events ) { - for ( i = 0, l = events[ type ].length; i < l; i++ ) { - jQuery.event.add( dest, type, events[ type ][ i ] ); - } - } - } + // handleObj is passed to all event handlers + handleObj = jQuery.extend( { + type: type, + origType: origType, + data: data, + handler: handler, + guid: handler.guid, + selector: selector, + needsContext: selector && jQuery.expr.match.needsContext.test( selector ), + namespace: namespaces.join( "." ) + }, handleObjIn ); + + // Init the event handler queue if we're the first + if ( !( handlers = events[ type ] ) ) { + handlers = events[ type ] = []; + handlers.delegateCount = 0; + + // Only use addEventListener if the special events handler returns false + if ( !special.setup || + special.setup.call( elem, data, namespaces, eventHandle ) === false ) { + + if ( elem.addEventListener ) { + elem.addEventListener( type, eventHandle ); + } + } + } - // make the cloned public data object a copy from the original - if ( curData.data ) { - curData.data = jQuery.extend( {}, curData.data ); - } -} + if ( special.add ) { + special.add.call( elem, handleObj ); -function fixCloneNodeIssues( src, dest ) { - var nodeName, e, data; + if ( !handleObj.handler.guid ) { + handleObj.handler.guid = handler.guid; + } + } - // We do not need to do anything for non-Elements - if ( dest.nodeType !== 1 ) { - return; - } + // Add to the element's handler list, delegates in front + if ( selector ) { + handlers.splice( handlers.delegateCount++, 0, handleObj ); + } else { + handlers.push( handleObj ); + } - nodeName = dest.nodeName.toLowerCase(); + // Keep track of which events have ever been used, for event optimization + jQuery.event.global[ type ] = true; + } - // IE6-8 copies events bound via attachEvent when using cloneNode. - if ( !support.noCloneEvent && dest[ jQuery.expando ] ) { - data = jQuery._data( dest ); + }, - for ( e in data.events ) { - jQuery.removeEvent( dest, e, data.handle ); - } + // Detach an event or set of events from an element + remove: function( elem, types, handler, selector, mappedTypes ) { - // Event data gets referenced instead of copied if the expando gets copied too - dest.removeAttribute( jQuery.expando ); - } + var j, origCount, tmp, + events, t, handleObj, + special, handlers, type, namespaces, origType, + elemData = dataPriv.hasData( elem ) && dataPriv.get( elem ); - // IE blanks contents when cloning scripts, and tries to evaluate newly-set text - if ( nodeName === "script" && dest.text !== src.text ) { - disableScript( dest ).text = src.text; - restoreScript( dest ); + if ( !elemData || !( events = elemData.events ) ) { + return; + } - // IE6-10 improperly clones children of object elements using classid. - // IE10 throws NoModificationAllowedError if parent is null, #12132. - } else if ( nodeName === "object" ) { - if ( dest.parentNode ) { - dest.outerHTML = src.outerHTML; - } + // Once for each type.namespace in types; type may be omitted + types = ( types || "" ).match( rnothtmlwhite ) || [ "" ]; + t = types.length; + while ( t-- ) { + tmp = rtypenamespace.exec( types[ t ] ) || []; + type = origType = tmp[ 1 ]; + namespaces = ( tmp[ 2 ] || "" ).split( "." ).sort(); - // This path appears unavoidable for IE9. When cloning an object - // element in IE9, the outerHTML strategy above is not sufficient. - // If the src has innerHTML and the destination does not, - // copy the src.innerHTML into the dest.innerHTML. #10324 - if ( support.html5Clone && ( src.innerHTML && !jQuery.trim(dest.innerHTML) ) ) { - dest.innerHTML = src.innerHTML; - } + // Unbind all events (on this namespace, if provided) for the element + if ( !type ) { + for ( type in events ) { + jQuery.event.remove( elem, type + types[ t ], handler, selector, true ); + } + continue; + } - } else if ( nodeName === "input" && rcheckableType.test( src.type ) ) { - // IE6-8 fails to persist the checked state of a cloned checkbox - // or radio button. Worse, IE6-7 fail to give the cloned element - // a checked appearance if the defaultChecked value isn't also set + special = jQuery.event.special[ type ] || {}; + type = ( selector ? special.delegateType : special.bindType ) || type; + handlers = events[ type ] || []; + tmp = tmp[ 2 ] && + new RegExp( "(^|\\.)" + namespaces.join( "\\.(?:.*\\.|)" ) + "(\\.|$)" ); + + // Remove matching events + origCount = j = handlers.length; + while ( j-- ) { + handleObj = handlers[ j ]; + + if ( ( mappedTypes || origType === handleObj.origType ) && + ( !handler || handler.guid === handleObj.guid ) && + ( !tmp || tmp.test( handleObj.namespace ) ) && + ( !selector || selector === handleObj.selector || + selector === "**" && handleObj.selector ) ) { + handlers.splice( j, 1 ); + + if ( handleObj.selector ) { + handlers.delegateCount--; + } + if ( special.remove ) { + special.remove.call( elem, handleObj ); + } + } + } - dest.defaultChecked = dest.checked = src.checked; + // Remove generic event handler if we removed something and no more handlers exist + // (avoids potential for endless recursion during removal of special event handlers) + if ( origCount && !handlers.length ) { + if ( !special.teardown || + special.teardown.call( elem, namespaces, elemData.handle ) === false ) { - // IE6-7 get confused and end up setting the value of a cloned - // checkbox/radio button to an empty string instead of "on" - if ( dest.value !== src.value ) { - dest.value = src.value; - } + jQuery.removeEvent( elem, type, elemData.handle ); + } - // IE6-8 fails to return the selected option to the default selected - // state when cloning options - } else if ( nodeName === "option" ) { - dest.defaultSelected = dest.selected = src.defaultSelected; + delete events[ type ]; + } + } - // IE6-8 fails to set the defaultValue to the correct value when - // cloning other types of input fields - } else if ( nodeName === "input" || nodeName === "textarea" ) { - dest.defaultValue = src.defaultValue; - } -} + // Remove data and the expando if it's no longer used + if ( jQuery.isEmptyObject( events ) ) { + dataPriv.remove( elem, "handle events" ); + } + }, -jQuery.extend({ - clone: function( elem, dataAndEvents, deepDataAndEvents ) { - var destElements, node, clone, i, srcElements, - inPage = jQuery.contains( elem.ownerDocument, elem ); + dispatch: function( nativeEvent ) { - if ( support.html5Clone || jQuery.isXMLDoc(elem) || !rnoshimcache.test( "<" + elem.nodeName + ">" ) ) { - clone = elem.cloneNode( true ); + var i, j, ret, matched, handleObj, handlerQueue, + args = new Array( arguments.length ), - // IE<=8 does not properly clone detached, unknown element nodes - } else { - fragmentDiv.innerHTML = elem.outerHTML; - fragmentDiv.removeChild( clone = fragmentDiv.firstChild ); - } + // Make a writable jQuery.Event from the native event object + event = jQuery.event.fix( nativeEvent ), - if ( (!support.noCloneEvent || !support.noCloneChecked) && - (elem.nodeType === 1 || elem.nodeType === 11) && !jQuery.isXMLDoc(elem) ) { + handlers = ( + dataPriv.get( this, "events" ) || Object.create( null ) + )[ event.type ] || [], + special = jQuery.event.special[ event.type ] || {}; - // We eschew Sizzle here for performance reasons: http://jsperf.com/getall-vs-sizzle/2 - destElements = getAll( clone ); - srcElements = getAll( elem ); + // Use the fix-ed jQuery.Event rather than the (read-only) native event + args[ 0 ] = event; - // Fix all IE cloning issues - for ( i = 0; (node = srcElements[i]) != null; ++i ) { - // Ensure that the destination node is not null; Fixes #9587 - if ( destElements[i] ) { - fixCloneNodeIssues( node, destElements[i] ); - } + for ( i = 1; i < arguments.length; i++ ) { + args[ i ] = arguments[ i ]; } - } - // Copy the events from the original to the clone - if ( dataAndEvents ) { - if ( deepDataAndEvents ) { - srcElements = srcElements || getAll( elem ); - destElements = destElements || getAll( clone ); + event.delegateTarget = this; - for ( i = 0; (node = srcElements[i]) != null; i++ ) { - cloneCopyEvent( node, destElements[i] ); - } - } else { - cloneCopyEvent( elem, clone ); + // Call the preDispatch hook for the mapped type, and let it bail if desired + if ( special.preDispatch && special.preDispatch.call( this, event ) === false ) { + return; } - } - // Preserve script evaluation history - destElements = getAll( clone, "script" ); - if ( destElements.length > 0 ) { - setGlobalEval( destElements, !inPage && getAll( elem, "script" ) ); - } + // Determine handlers + handlerQueue = jQuery.event.handlers.call( this, event, handlers ); - destElements = srcElements = node = null; + // Run delegates first; they may want to stop propagation beneath us + i = 0; + while ( ( matched = handlerQueue[ i++ ] ) && !event.isPropagationStopped() ) { + event.currentTarget = matched.elem; - // Return the cloned set - return clone; - }, + j = 0; + while ( ( handleObj = matched.handlers[ j++ ] ) && + !event.isImmediatePropagationStopped() ) { - buildFragment: function( elems, context, scripts, selection ) { - var j, elem, contains, - tmp, tag, tbody, wrap, - l = elems.length, + // If the event is namespaced, then each handler is only invoked if it is + // specially universal or its namespaces are a superset of the event's. + if ( !event.rnamespace || handleObj.namespace === false || + event.rnamespace.test( handleObj.namespace ) ) { - // Ensure a safe fragment - safe = createSafeFragment( context ), + event.handleObj = handleObj; + event.data = handleObj.data; - nodes = [], - i = 0; + ret = ( ( jQuery.event.special[ handleObj.origType ] || {} ).handle || + handleObj.handler ).apply( matched.elem, args ); - for ( ; i < l; i++ ) { - elem = elems[ i ]; + if ( ret !== undefined ) { + if ( ( event.result = ret ) === false ) { + event.preventDefault(); + event.stopPropagation(); + } + } + } + } + } - if ( elem || elem === 0 ) { + // Call the postDispatch hook for the mapped type + if ( special.postDispatch ) { + special.postDispatch.call( this, event ); + } - // Add nodes directly - if ( jQuery.type( elem ) === "object" ) { - jQuery.merge( nodes, elem.nodeType ? [ elem ] : elem ); + return event.result; + }, - // Convert non-html into a text node - } else if ( !rhtml.test( elem ) ) { - nodes.push( context.createTextNode( elem ) ); + handlers: function( event, handlers ) { + var i, handleObj, sel, matchedHandlers, matchedSelectors, + handlerQueue = [], + delegateCount = handlers.delegateCount, + cur = event.target; + + // Find delegate handlers + if ( delegateCount && + + // Support: IE <=9 + // Black-hole SVG instance trees (trac-13180) + cur.nodeType && + + // Support: Firefox <=42 + // Suppress spec-violating clicks indicating a non-primary pointer button (trac-3861) + // https://www.w3.org/TR/DOM-Level-3-Events/#event-type-click + // Support: IE 11 only + // ...but not arrow key "clicks" of radio inputs, which can have `button` -1 (gh-2343) + !( event.type === "click" && event.button >= 1 ) ) { + + for ( ; cur !== this; cur = cur.parentNode || this ) { + + // Don't check non-elements (#13208) + // Don't process clicks on disabled elements (#6911, #8165, #11382, #11764) + if ( cur.nodeType === 1 && !( event.type === "click" && cur.disabled === true ) ) { + matchedHandlers = []; + matchedSelectors = {}; + for ( i = 0; i < delegateCount; i++ ) { + handleObj = handlers[ i ]; + + // Don't conflict with Object.prototype properties (#13203) + sel = handleObj.selector + " "; + + if ( matchedSelectors[ sel ] === undefined ) { + matchedSelectors[ sel ] = handleObj.needsContext ? + jQuery( sel, this ).index( cur ) > -1 : + jQuery.find( sel, this, null, [ cur ] ).length; + } + if ( matchedSelectors[ sel ] ) { + matchedHandlers.push( handleObj ); + } + } + if ( matchedHandlers.length ) { + handlerQueue.push( { elem: cur, handlers: matchedHandlers } ); + } + } + } + } - // Convert html into DOM nodes - } else { - tmp = tmp || safe.appendChild( context.createElement("div") ); + // Add the remaining (directly-bound) handlers + cur = this; + if ( delegateCount < handlers.length ) { + handlerQueue.push( { elem: cur, handlers: handlers.slice( delegateCount ) } ); + } - // Deserialize a standard representation - tag = (rtagName.exec( elem ) || [ "", "" ])[ 1 ].toLowerCase(); - wrap = wrapMap[ tag ] || wrapMap._default; + return handlerQueue; + }, - tmp.innerHTML = wrap[1] + elem.replace( rxhtmlTag, "<$1>" ) + wrap[2]; + addProp: function( name, hook ) { + Object.defineProperty( jQuery.Event.prototype, name, { + enumerable: true, + configurable: true, - // Descend through wrappers to the right content - j = wrap[0]; - while ( j-- ) { - tmp = tmp.lastChild; - } + get: isFunction( hook ) ? + function() { + if ( this.originalEvent ) { + return hook( this.originalEvent ); + } + } : + function() { + if ( this.originalEvent ) { + return this.originalEvent[ name ]; + } + }, + + set: function( value ) { + Object.defineProperty( this, name, { + enumerable: true, + configurable: true, + writable: true, + value: value + } ); + } + } ); + }, - // Manually add leading whitespace removed by IE - if ( !support.leadingWhitespace && rleadingWhitespace.test( elem ) ) { - nodes.push( context.createTextNode( rleadingWhitespace.exec( elem )[0] ) ); - } + fix: function( originalEvent ) { + return originalEvent[ jQuery.expando ] ? + originalEvent : + new jQuery.Event( originalEvent ); + }, - // Remove IE's autoinserted from table fragments - if ( !support.tbody ) { + special: { + load: { - // String was a , *may* have spurious - elem = tag === "table" && !rtbody.test( elem ) ? - tmp.firstChild : + // Prevent triggered image.load events from bubbling to window.load + noBubble: true + }, + click: { - // String was a bare or - wrap[1] === "
" && !rtbody.test( elem ) ? - tmp : - 0; + // Utilize native event to ensure correct state for checkable inputs + setup: function( data ) { - j = elem && elem.childNodes.length; - while ( j-- ) { - if ( jQuery.nodeName( (tbody = elem.childNodes[j]), "tbody" ) && !tbody.childNodes.length ) { - elem.removeChild( tbody ); - } - } + // For mutual compressibility with _default, replace `this` access with a local var. + // `|| data` is dead code meant only to preserve the variable through minification. + var el = this || data; + + // Claim the first handler + if ( rcheckableType.test( el.type ) && + el.click && nodeName( el, "input" ) ) { + + // dataPriv.set( el, "click", ... ) + leverageNative( el, "click", returnTrue ); } - jQuery.merge( nodes, tmp.childNodes ); + // Return false to allow normal processing in the caller + return false; + }, + trigger: function( data ) { - // Fix #12392 for WebKit and IE > 9 - tmp.textContent = ""; + // For mutual compressibility with _default, replace `this` access with a local var. + // `|| data` is dead code meant only to preserve the variable through minification. + var el = this || data; + + // Force setup before triggering a click + if ( rcheckableType.test( el.type ) && + el.click && nodeName( el, "input" ) ) { - // Fix #12392 for oldIE - while ( tmp.firstChild ) { - tmp.removeChild( tmp.firstChild ); + leverageNative( el, "click" ); } - // Remember the top-level container for proper cleanup - tmp = safe.lastChild; + // Return non-false to allow normal event-path propagation + return true; + }, + + // For cross-browser consistency, suppress native .click() on links + // Also prevent it if we're currently inside a leveraged native-event stack + _default: function( event ) { + var target = event.target; + return rcheckableType.test( target.type ) && + target.click && nodeName( target, "input" ) && + dataPriv.get( target, "click" ) || + nodeName( target, "a" ); } - } - } + }, - // Fix #11356: Clear elements from fragment - if ( tmp ) { - safe.removeChild( tmp ); - } + beforeunload: { + postDispatch: function( event ) { - // Reset defaultChecked for any radios and checkboxes - // about to be appended to the DOM in IE 6/7 (#8060) - if ( !support.appendChecked ) { - jQuery.grep( getAll( nodes, "input" ), fixDefaultChecked ); + // Support: Firefox 20+ + // Firefox doesn't alert if the returnValue field is not set. + if ( event.result !== undefined && event.originalEvent ) { + event.originalEvent.returnValue = event.result; + } + } + } } + }; - i = 0; - while ( (elem = nodes[ i++ ]) ) { +// Ensure the presence of an event listener that handles manually-triggered +// synthetic events by interrupting progress until reinvoked in response to +// *native* events that it fires directly, ensuring that state changes have +// already occurred before other listeners are invoked. + function leverageNative( el, type, expectSync ) { - // #4087 - If origin and destination elements are the same, and this is - // that element, do not do anything - if ( selection && jQuery.inArray( elem, selection ) !== -1 ) { - continue; + // Missing expectSync indicates a trigger call, which must force setup through jQuery.event.add + if ( !expectSync ) { + if ( dataPriv.get( el, type ) === undefined ) { + jQuery.event.add( el, type, returnTrue ); } + return; + } - contains = jQuery.contains( elem.ownerDocument, elem ); + // Register the controller as a special universal handler for all event namespaces + dataPriv.set( el, type, false ); + jQuery.event.add( el, type, { + namespace: false, + handler: function( event ) { + var notAsync, result, + saved = dataPriv.get( this, type ); + + if ( ( event.isTrigger & 1 ) && this[ type ] ) { + + // Interrupt processing of the outer synthetic .trigger()ed event + // Saved data should be false in such cases, but might be a leftover capture object + // from an async native handler (gh-4350) + if ( !saved.length ) { + + // Store arguments for use when handling the inner native event + // There will always be at least one argument (an event object), so this array + // will not be confused with a leftover capture object. + saved = slice.call( arguments ); + dataPriv.set( this, type, saved ); + + // Trigger the native event and capture its result + // Support: IE <=9 - 11+ + // focus() and blur() are asynchronous + notAsync = expectSync( this, type ); + this[ type ](); + result = dataPriv.get( this, type ); + if ( saved !== result || notAsync ) { + dataPriv.set( this, type, false ); + } else { + result = {}; + } + if ( saved !== result ) { - // Append to fragment - tmp = getAll( safe.appendChild( elem ), "script" ); + // Cancel the outer synthetic event + event.stopImmediatePropagation(); + event.preventDefault(); - // Preserve script evaluation history - if ( contains ) { - setGlobalEval( tmp ); - } + // Support: Chrome 86+ + // In Chrome, if an element having a focusout handler is blurred by + // clicking outside of it, it invokes the handler synchronously. If + // that handler calls `.remove()` on the element, the data is cleared, + // leaving `result` undefined. We need to guard against this. + return result && result.value; + } - // Capture executables - if ( scripts ) { - j = 0; - while ( (elem = tmp[ j++ ]) ) { - if ( rscriptType.test( elem.type || "" ) ) { - scripts.push( elem ); + // If this is an inner synthetic event for an event with a bubbling surrogate + // (focus or blur), assume that the surrogate already propagated from triggering the + // native event and prevent that from happening again here. + // This technically gets the ordering wrong w.r.t. to `.trigger()` (in which the + // bubbling surrogate propagates *after* the non-bubbling base), but that seems + // less bad than duplication. + } else if ( ( jQuery.event.special[ type ] || {} ).delegateType ) { + event.stopPropagation(); } + + // If this is a native event triggered above, everything is now in order + // Fire an inner synthetic event with the original arguments + } else if ( saved.length ) { + + // ...and capture the result + dataPriv.set( this, type, { + value: jQuery.event.trigger( + + // Support: IE <=9 - 11+ + // Extend with the prototype to reset the above stopImmediatePropagation() + jQuery.extend( saved[ 0 ], jQuery.Event.prototype ), + saved.slice( 1 ), + this + ) + } ); + + // Abort handling of the native event + event.stopImmediatePropagation(); } } + } ); + } + + jQuery.removeEvent = function( elem, type, handle ) { + + // This "if" is needed for plain objects + if ( elem.removeEventListener ) { + elem.removeEventListener( type, handle ); } + }; - tmp = null; + jQuery.Event = function( src, props ) { - return safe; - }, + // Allow instantiation without the 'new' keyword + if ( !( this instanceof jQuery.Event ) ) { + return new jQuery.Event( src, props ); + } - cleanData: function( elems, /* internal */ acceptData ) { - var elem, type, id, data, - i = 0, - internalKey = jQuery.expando, - cache = jQuery.cache, - deleteExpando = support.deleteExpando, - special = jQuery.event.special; + // Event object + if ( src && src.type ) { + this.originalEvent = src; + this.type = src.type; - for ( ; (elem = elems[i]) != null; i++ ) { - if ( acceptData || jQuery.acceptData( elem ) ) { + // Events bubbling up the document may have been marked as prevented + // by a handler lower down the tree; reflect the correct value. + this.isDefaultPrevented = src.defaultPrevented || + src.defaultPrevented === undefined && - id = elem[ internalKey ]; - data = id && cache[ id ]; + // Support: Android <=2.3 only + src.returnValue === false ? + returnTrue : + returnFalse; - if ( data ) { - if ( data.events ) { - for ( type in data.events ) { - if ( special[ type ] ) { - jQuery.event.remove( elem, type ); + // Create target properties + // Support: Safari <=6 - 7 only + // Target should not be a text node (#504, #13143) + this.target = ( src.target && src.target.nodeType === 3 ) ? + src.target.parentNode : + src.target; - // This is a shortcut to avoid jQuery.event.remove's overhead - } else { - jQuery.removeEvent( elem, type, data.handle ); - } - } - } + this.currentTarget = src.currentTarget; + this.relatedTarget = src.relatedTarget; - // Remove cache only if it was not already removed by jQuery.event.remove - if ( cache[ id ] ) { + // Event type + } else { + this.type = src; + } - delete cache[ id ]; + // Put explicitly provided properties onto the event object + if ( props ) { + jQuery.extend( this, props ); + } - // IE does not allow us to delete expando properties from nodes, - // nor does it have a removeAttribute function on Document nodes; - // we must handle all of these cases - if ( deleteExpando ) { - delete elem[ internalKey ]; + // Create a timestamp if incoming event doesn't have one + this.timeStamp = src && src.timeStamp || Date.now(); - } else if ( typeof elem.removeAttribute !== strundefined ) { - elem.removeAttribute( internalKey ); + // Mark it as fixed + this[ jQuery.expando ] = true; + }; - } else { - elem[ internalKey ] = null; - } +// jQuery.Event is based on DOM3 Events as specified by the ECMAScript Language Binding +// https://www.w3.org/TR/2003/WD-DOM-Level-3-Events-20030331/ecma-script-binding.html + jQuery.Event.prototype = { + constructor: jQuery.Event, + isDefaultPrevented: returnFalse, + isPropagationStopped: returnFalse, + isImmediatePropagationStopped: returnFalse, + isSimulated: false, - deletedIds.push( id ); - } - } + preventDefault: function() { + var e = this.originalEvent; + + this.isDefaultPrevented = returnTrue; + + if ( e && !this.isSimulated ) { + e.preventDefault(); } - } - } -}); - -jQuery.fn.extend({ - text: function( value ) { - return access( this, function( value ) { - return value === undefined ? - jQuery.text( this ) : - this.empty().append( ( this[0] && this[0].ownerDocument || document ).createTextNode( value ) ); - }, null, value, arguments.length ); - }, - - append: function() { - return this.domManip( arguments, function( elem ) { - if ( this.nodeType === 1 || this.nodeType === 11 || this.nodeType === 9 ) { - var target = manipulationTarget( this, elem ); - target.appendChild( elem ); - } - }); - }, - - prepend: function() { - return this.domManip( arguments, function( elem ) { - if ( this.nodeType === 1 || this.nodeType === 11 || this.nodeType === 9 ) { - var target = manipulationTarget( this, elem ); - target.insertBefore( elem, target.firstChild ); - } - }); - }, - - before: function() { - return this.domManip( arguments, function( elem ) { - if ( this.parentNode ) { - this.parentNode.insertBefore( elem, this ); - } - }); - }, - - after: function() { - return this.domManip( arguments, function( elem ) { - if ( this.parentNode ) { - this.parentNode.insertBefore( elem, this.nextSibling ); - } - }); - }, - - remove: function( selector, keepData /* Internal Use Only */ ) { - var elem, - elems = selector ? jQuery.filter( selector, this ) : this, - i = 0; + }, + stopPropagation: function() { + var e = this.originalEvent; - for ( ; (elem = elems[i]) != null; i++ ) { + this.isPropagationStopped = returnTrue; - if ( !keepData && elem.nodeType === 1 ) { - jQuery.cleanData( getAll( elem ) ); + if ( e && !this.isSimulated ) { + e.stopPropagation(); } + }, + stopImmediatePropagation: function() { + var e = this.originalEvent; - if ( elem.parentNode ) { - if ( keepData && jQuery.contains( elem.ownerDocument, elem ) ) { - setGlobalEval( getAll( elem, "script" ) ); - } - elem.parentNode.removeChild( elem ); + this.isImmediatePropagationStopped = returnTrue; + + if ( e && !this.isSimulated ) { + e.stopImmediatePropagation(); } + + this.stopPropagation(); } + }; - return this; - }, +// Includes all common event props including KeyEvent and MouseEvent specific props + jQuery.each( { + altKey: true, + bubbles: true, + cancelable: true, + changedTouches: true, + ctrlKey: true, + detail: true, + eventPhase: true, + metaKey: true, + pageX: true, + pageY: true, + shiftKey: true, + view: true, + "char": true, + code: true, + charCode: true, + key: true, + keyCode: true, + button: true, + buttons: true, + clientX: true, + clientY: true, + offsetX: true, + offsetY: true, + pointerId: true, + pointerType: true, + screenX: true, + screenY: true, + targetTouches: true, + toElement: true, + touches: true, + which: true + }, jQuery.event.addProp ); + + jQuery.each( { focus: "focusin", blur: "focusout" }, function( type, delegateType ) { + jQuery.event.special[ type ] = { + + // Utilize native event if possible so blur/focus sequence is correct + setup: function() { - empty: function() { - var elem, - i = 0; + // Claim the first handler + // dataPriv.set( this, "focus", ... ) + // dataPriv.set( this, "blur", ... ) + leverageNative( this, type, expectSync ); - for ( ; (elem = this[i]) != null; i++ ) { - // Remove element nodes and prevent memory leaks - if ( elem.nodeType === 1 ) { - jQuery.cleanData( getAll( elem, false ) ); + // Return false to allow normal processing in the caller + return false; + }, + trigger: function() { + + // Force setup before trigger + leverageNative( this, type ); + + // Return non-false to allow normal event-path propagation + return true; + }, + + // Suppress native focus or blur as it's already being fired + // in leverageNative. + _default: function() { + return true; + }, + + delegateType: delegateType + }; + } ); + +// Create mouseenter/leave events using mouseover/out and event-time checks +// so that event delegation works in jQuery. +// Do the same for pointerenter/pointerleave and pointerover/pointerout +// +// Support: Safari 7 only +// Safari sends mouseenter too often; see: +// https://bugs.chromium.org/p/chromium/issues/detail?id=470258 +// for the description of the bug (it existed in older Chrome versions as well). + jQuery.each( { + mouseenter: "mouseover", + mouseleave: "mouseout", + pointerenter: "pointerover", + pointerleave: "pointerout" + }, function( orig, fix ) { + jQuery.event.special[ orig ] = { + delegateType: fix, + bindType: fix, + + handle: function( event ) { + var ret, + target = this, + related = event.relatedTarget, + handleObj = event.handleObj; + + // For mouseenter/leave call the handler if related is outside the target. + // NB: No relatedTarget if the mouse left/entered the browser window + if ( !related || ( related !== target && !jQuery.contains( target, related ) ) ) { + event.type = handleObj.origType; + ret = handleObj.handler.apply( this, arguments ); + event.type = fix; + } + return ret; + } + }; + } ); + + jQuery.fn.extend( { + + on: function( types, selector, data, fn ) { + return on( this, types, selector, data, fn ); + }, + one: function( types, selector, data, fn ) { + return on( this, types, selector, data, fn, 1 ); + }, + off: function( types, selector, fn ) { + var handleObj, type; + if ( types && types.preventDefault && types.handleObj ) { + + // ( event ) dispatched jQuery.Event + handleObj = types.handleObj; + jQuery( types.delegateTarget ).off( + handleObj.namespace ? + handleObj.origType + "." + handleObj.namespace : + handleObj.origType, + handleObj.selector, + handleObj.handler + ); + return this; } + if ( typeof types === "object" ) { - // Remove any remaining nodes - while ( elem.firstChild ) { - elem.removeChild( elem.firstChild ); + // ( types-object [, selector] ) + for ( type in types ) { + this.off( type, selector, types[ type ] ); + } + return this; } + if ( selector === false || typeof selector === "function" ) { - // If this is a select, ensure that it displays empty (#12336) - // Support: IE<9 - if ( elem.options && jQuery.nodeName( elem, "select" ) ) { - elem.options.length = 0; + // ( types [, fn] ) + fn = selector; + selector = undefined; } + if ( fn === false ) { + fn = returnFalse; + } + return this.each( function() { + jQuery.event.remove( this, types, fn, selector ); + } ); } + } ); - return this; - }, - - clone: function( dataAndEvents, deepDataAndEvents ) { - dataAndEvents = dataAndEvents == null ? false : dataAndEvents; - deepDataAndEvents = deepDataAndEvents == null ? dataAndEvents : deepDataAndEvents; - return this.map(function() { - return jQuery.clone( this, dataAndEvents, deepDataAndEvents ); - }); - }, + var - html: function( value ) { - return access( this, function( value ) { - var elem = this[ 0 ] || {}, - i = 0, - l = this.length; + // Support: IE <=10 - 11, Edge 12 - 13 only + // In IE/Edge using regex groups here causes severe slowdowns. + // See https://connect.microsoft.com/IE/feedback/details/1736512/ + rnoInnerhtml = /\s*$/g; - // See if we can take a shortcut and just use innerHTML - if ( typeof value === "string" && !rnoInnerhtml.test( value ) && - ( support.htmlSerialize || !rnoshimcache.test( value ) ) && - ( support.leadingWhitespace || !rleadingWhitespace.test( value ) ) && - !wrapMap[ (rtagName.exec( value ) || [ "", "" ])[ 1 ].toLowerCase() ] ) { +// Prefer a tbody over its parent table for containing new rows + function manipulationTarget( elem, content ) { + if ( nodeName( elem, "table" ) && + nodeName( content.nodeType !== 11 ? content : content.firstChild, "tr" ) ) { - value = value.replace( rxhtmlTag, "<$1>" ); + return jQuery( elem ).children( "tbody" )[ 0 ] || elem; + } - try { - for (; i < l; i++ ) { - // Remove element nodes and prevent memory leaks - elem = this[i] || {}; - if ( elem.nodeType === 1 ) { - jQuery.cleanData( getAll( elem, false ) ); - elem.innerHTML = value; - } - } + return elem; + } - elem = 0; +// Replace/restore the type attribute of script elements for safe DOM manipulation + function disableScript( elem ) { + elem.type = ( elem.getAttribute( "type" ) !== null ) + "/" + elem.type; + return elem; + } + function restoreScript( elem ) { + if ( ( elem.type || "" ).slice( 0, 5 ) === "true/" ) { + elem.type = elem.type.slice( 5 ); + } else { + elem.removeAttribute( "type" ); + } - // If using innerHTML throws an exception, use the fallback method - } catch(e) {} - } + return elem; + } - if ( elem ) { - this.empty().append( value ); - } - }, null, value, arguments.length ); - }, + function cloneCopyEvent( src, dest ) { + var i, l, type, pdataOld, udataOld, udataCur, events; - replaceWith: function() { - var arg = arguments[ 0 ]; + if ( dest.nodeType !== 1 ) { + return; + } - // Make the changes, replacing each context element with the new content - this.domManip( arguments, function( elem ) { - arg = this.parentNode; + // 1. Copy private data: events, handlers, etc. + if ( dataPriv.hasData( src ) ) { + pdataOld = dataPriv.get( src ); + events = pdataOld.events; - jQuery.cleanData( getAll( this ) ); + if ( events ) { + dataPriv.remove( dest, "handle events" ); - if ( arg ) { - arg.replaceChild( elem, this ); + for ( type in events ) { + for ( i = 0, l = events[ type ].length; i < l; i++ ) { + jQuery.event.add( dest, type, events[ type ][ i ] ); + } + } } - }); + } + + // 2. Copy user data + if ( dataUser.hasData( src ) ) { + udataOld = dataUser.access( src ); + udataCur = jQuery.extend( {}, udataOld ); + + dataUser.set( dest, udataCur ); + } + } - // Force removal if there was no new content (e.g., from empty arguments) - return arg && (arg.length || arg.nodeType) ? this : this.remove(); - }, +// Fix IE bugs, see support tests + function fixInput( src, dest ) { + var nodeName = dest.nodeName.toLowerCase(); - detach: function( selector ) { - return this.remove( selector, true ); - }, + // Fails to persist the checked state of a cloned checkbox or radio button. + if ( nodeName === "input" && rcheckableType.test( src.type ) ) { + dest.checked = src.checked; - domManip: function( args, callback ) { + // Fails to return the selected option to the default selected state when cloning options + } else if ( nodeName === "input" || nodeName === "textarea" ) { + dest.defaultValue = src.defaultValue; + } + } + + function domManip( collection, args, callback, ignored ) { // Flatten any nested arrays - args = concat.apply( [], args ); + args = flat( args ); - var first, node, hasScripts, - scripts, doc, fragment, + var fragment, first, scripts, hasScripts, node, doc, i = 0, - l = this.length, - set = this, + l = collection.length, iNoClone = l - 1, - value = args[0], - isFunction = jQuery.isFunction( value ); + value = args[ 0 ], + valueIsFunction = isFunction( value ); // We can't cloneNode fragments that contain checked, in WebKit - if ( isFunction || - ( l > 1 && typeof value === "string" && - !support.checkClone && rchecked.test( value ) ) ) { - return this.each(function( index ) { - var self = set.eq( index ); - if ( isFunction ) { - args[0] = value.call( this, index, self.html() ); + if ( valueIsFunction || + ( l > 1 && typeof value === "string" && + !support.checkClone && rchecked.test( value ) ) ) { + return collection.each( function( index ) { + var self = collection.eq( index ); + if ( valueIsFunction ) { + args[ 0 ] = value.call( this, index, self.html() ); } - self.domManip( args, callback ); - }); + domManip( self, args, callback, ignored ); + } ); } if ( l ) { - fragment = jQuery.buildFragment( args, this[ 0 ].ownerDocument, false, this ); + fragment = buildFragment( args, collection[ 0 ].ownerDocument, false, collection, ignored ); first = fragment.firstChild; if ( fragment.childNodes.length === 1 ) { fragment = first; } - if ( first ) { + // Require either new content or an interest in ignored elements to invoke the callback + if ( first || ignored ) { scripts = jQuery.map( getAll( fragment, "script" ), disableScript ); hasScripts = scripts.length; - // Use the original fragment for the last item instead of the first because it can end up + // Use the original fragment for the last item + // instead of the first because it can end up // being emptied incorrectly in certain situations (#8070). for ( ; i < l; i++ ) { node = fragment; @@ -5957,11 +6079,14 @@ jQuery.fn.extend({ // Keep references to cloned scripts for later restoration if ( hasScripts ) { + + // Support: Android <=4.0 only, PhantomJS 1 only + // push.apply(_, arraylike) throws on ancient WebKit jQuery.merge( scripts, getAll( node, "script" ) ); } } - callback.call( this[i], node, i ); + callback.call( collection[ i ], node, i ); } if ( hasScripts ) { @@ -5974,206 +6099,507 @@ jQuery.fn.extend({ for ( i = 0; i < hasScripts; i++ ) { node = scripts[ i ]; if ( rscriptType.test( node.type || "" ) && - !jQuery._data( node, "globalEval" ) && jQuery.contains( doc, node ) ) { + !dataPriv.access( node, "globalEval" ) && + jQuery.contains( doc, node ) ) { + + if ( node.src && ( node.type || "" ).toLowerCase() !== "module" ) { - if ( node.src ) { // Optional AJAX dependency, but won't run scripts if not present - if ( jQuery._evalUrl ) { - jQuery._evalUrl( node.src ); + if ( jQuery._evalUrl && !node.noModule ) { + jQuery._evalUrl( node.src, { + nonce: node.nonce || node.getAttribute( "nonce" ) + }, doc ); } } else { - jQuery.globalEval( ( node.text || node.textContent || node.innerHTML || "" ).replace( rcleanScript, "" ) ); + DOMEval( node.textContent.replace( rcleanScript, "" ), node, doc ); } } } } - - // Fix #11809: Avoid leaking memory - fragment = first = null; } } - return this; + return collection; } -}); - -jQuery.each({ - appendTo: "append", - prependTo: "prepend", - insertBefore: "before", - insertAfter: "after", - replaceAll: "replaceWith" -}, function( name, original ) { - jQuery.fn[ name ] = function( selector ) { - var elems, - i = 0, - ret = [], - insert = jQuery( selector ), - last = insert.length - 1; - for ( ; i <= last; i++ ) { - elems = i === last ? this : this.clone(true); - jQuery( insert[i] )[ original ]( elems ); + function remove( elem, selector, keepData ) { + var node, + nodes = selector ? jQuery.filter( selector, elem ) : elem, + i = 0; + + for ( ; ( node = nodes[ i ] ) != null; i++ ) { + if ( !keepData && node.nodeType === 1 ) { + jQuery.cleanData( getAll( node ) ); + } - // Modern browsers can apply jQuery collections as arrays, but oldIE needs a .get() - push.apply( ret, elems.get() ); + if ( node.parentNode ) { + if ( keepData && isAttached( node ) ) { + setGlobalEval( getAll( node, "script" ) ); + } + node.parentNode.removeChild( node ); + } } - return this.pushStack( ret ); - }; -}); + return elem; + } + jQuery.extend( { + htmlPrefilter: function( html ) { + return html; + }, -var iframe, - elemdisplay = {}; + clone: function( elem, dataAndEvents, deepDataAndEvents ) { + var i, l, srcElements, destElements, + clone = elem.cloneNode( true ), + inPage = isAttached( elem ); -/** - * Retrieve the actual display of a element - * @param {String} name nodeName of the element - * @param {Object} doc Document object - */ -// Called only from within defaultDisplay -function actualDisplay( name, doc ) { - var style, - elem = jQuery( doc.createElement( name ) ).appendTo( doc.body ), + // Fix IE cloning issues + if ( !support.noCloneChecked && ( elem.nodeType === 1 || elem.nodeType === 11 ) && + !jQuery.isXMLDoc( elem ) ) { - // getDefaultComputedStyle might be reliably used only on attached element - display = window.getDefaultComputedStyle && ( style = window.getDefaultComputedStyle( elem[ 0 ] ) ) ? + // We eschew Sizzle here for performance reasons: https://jsperf.com/getall-vs-sizzle/2 + destElements = getAll( clone ); + srcElements = getAll( elem ); - // Use of this method is a temporary fix (more like optmization) until something better comes along, - // since it was removed from specification and supported only in FF - style.display : jQuery.css( elem[ 0 ], "display" ); + for ( i = 0, l = srcElements.length; i < l; i++ ) { + fixInput( srcElements[ i ], destElements[ i ] ); + } + } - // We don't have any data stored on the element, - // so use "detach" method as fast way to get rid of the element - elem.detach(); + // Copy the events from the original to the clone + if ( dataAndEvents ) { + if ( deepDataAndEvents ) { + srcElements = srcElements || getAll( elem ); + destElements = destElements || getAll( clone ); - return display; -} + for ( i = 0, l = srcElements.length; i < l; i++ ) { + cloneCopyEvent( srcElements[ i ], destElements[ i ] ); + } + } else { + cloneCopyEvent( elem, clone ); + } + } -/** - * Try to determine the default display value of an element - * @param {String} nodeName - */ -function defaultDisplay( nodeName ) { - var doc = document, - display = elemdisplay[ nodeName ]; + // Preserve script evaluation history + destElements = getAll( clone, "script" ); + if ( destElements.length > 0 ) { + setGlobalEval( destElements, !inPage && getAll( elem, "script" ) ); + } - if ( !display ) { - display = actualDisplay( nodeName, doc ); + // Return the cloned set + return clone; + }, - // If the simple way fails, read from inside an iframe - if ( display === "none" || !display ) { + cleanData: function( elems ) { + var data, elem, type, + special = jQuery.event.special, + i = 0; - // Use the already-created iframe if possible - iframe = (iframe || jQuery( "