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2463 lines
83 KiB
2463 lines
83 KiB
/**!
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* @fileOverview Kickass library to create and place poppers near their reference elements.
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* @version 1.16.1
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* @license
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* Copyright (c) 2016 Federico Zivolo and contributors
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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var isBrowser = typeof window !== 'undefined' && typeof document !== 'undefined' && typeof navigator !== 'undefined';
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const timeoutDuration = function () {
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const longerTimeoutBrowsers = ['Edge', 'Trident', 'Firefox'];
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for (let i = 0; i < longerTimeoutBrowsers.length; i += 1) {
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if (isBrowser && navigator.userAgent.indexOf(longerTimeoutBrowsers[i]) >= 0) {
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return 1;
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}
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}
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return 0;
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}();
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function microtaskDebounce(fn) {
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let called = false;
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return () => {
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if (called) {
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return;
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}
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called = true;
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window.Promise.resolve().then(() => {
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called = false;
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fn();
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});
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};
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}
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function taskDebounce(fn) {
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let scheduled = false;
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return () => {
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if (!scheduled) {
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scheduled = true;
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setTimeout(() => {
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scheduled = false;
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fn();
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}, timeoutDuration);
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}
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};
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}
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const supportsMicroTasks = isBrowser && window.Promise;
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/**
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* Create a debounced version of a method, that's asynchronously deferred
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* but called in the minimum time possible.
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*
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* @method
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* @memberof Popper.Utils
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* @argument {Function} fn
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* @returns {Function}
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*/
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var debounce = supportsMicroTasks ? microtaskDebounce : taskDebounce;
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/**
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* Check if the given variable is a function
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* @method
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* @memberof Popper.Utils
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* @argument {Any} functionToCheck - variable to check
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* @returns {Boolean} answer to: is a function?
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*/
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function isFunction(functionToCheck) {
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const getType = {};
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return functionToCheck && getType.toString.call(functionToCheck) === '[object Function]';
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}
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/**
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* Get CSS computed property of the given element
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* @method
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* @memberof Popper.Utils
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* @argument {Eement} element
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* @argument {String} property
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*/
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function getStyleComputedProperty(element, property) {
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if (element.nodeType !== 1) {
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return [];
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}
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// NOTE: 1 DOM access here
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const window = element.ownerDocument.defaultView;
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const css = window.getComputedStyle(element, null);
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return property ? css[property] : css;
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}
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/**
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* Returns the parentNode or the host of the element
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* @method
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* @memberof Popper.Utils
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* @argument {Element} element
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* @returns {Element} parent
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*/
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function getParentNode(element) {
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if (element.nodeName === 'HTML') {
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return element;
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}
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return element.parentNode || element.host;
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}
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/**
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* Returns the scrolling parent of the given element
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* @method
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* @memberof Popper.Utils
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* @argument {Element} element
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* @returns {Element} scroll parent
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*/
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function getScrollParent(element) {
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// Return body, `getScroll` will take care to get the correct `scrollTop` from it
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if (!element) {
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return document.body;
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}
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switch (element.nodeName) {
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case 'HTML':
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case 'BODY':
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return element.ownerDocument.body;
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case '#document':
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return element.body;
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}
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// Firefox want us to check `-x` and `-y` variations as well
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const { overflow, overflowX, overflowY } = getStyleComputedProperty(element);
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if (/(auto|scroll|overlay)/.test(overflow + overflowY + overflowX)) {
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return element;
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}
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return getScrollParent(getParentNode(element));
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}
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/**
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* Returns the reference node of the reference object, or the reference object itself.
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* @method
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* @memberof Popper.Utils
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* @param {Element|Object} reference - the reference element (the popper will be relative to this)
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* @returns {Element} parent
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*/
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function getReferenceNode(reference) {
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return reference && reference.referenceNode ? reference.referenceNode : reference;
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}
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const isIE11 = isBrowser && !!(window.MSInputMethodContext && document.documentMode);
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const isIE10 = isBrowser && /MSIE 10/.test(navigator.userAgent);
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/**
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* Determines if the browser is Internet Explorer
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* @method
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* @memberof Popper.Utils
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* @param {Number} version to check
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* @returns {Boolean} isIE
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*/
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function isIE(version) {
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if (version === 11) {
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return isIE11;
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}
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if (version === 10) {
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return isIE10;
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}
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return isIE11 || isIE10;
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}
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/**
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* Returns the offset parent of the given element
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* @method
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* @memberof Popper.Utils
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* @argument {Element} element
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* @returns {Element} offset parent
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*/
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function getOffsetParent(element) {
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if (!element) {
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return document.documentElement;
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}
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const noOffsetParent = isIE(10) ? document.body : null;
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// NOTE: 1 DOM access here
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let offsetParent = element.offsetParent || null;
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// Skip hidden elements which don't have an offsetParent
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while (offsetParent === noOffsetParent && element.nextElementSibling) {
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offsetParent = (element = element.nextElementSibling).offsetParent;
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}
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const nodeName = offsetParent && offsetParent.nodeName;
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if (!nodeName || nodeName === 'BODY' || nodeName === 'HTML') {
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return element ? element.ownerDocument.documentElement : document.documentElement;
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}
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// .offsetParent will return the closest TH, TD or TABLE in case
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// no offsetParent is present, I hate this job...
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if (['TH', 'TD', 'TABLE'].indexOf(offsetParent.nodeName) !== -1 && getStyleComputedProperty(offsetParent, 'position') === 'static') {
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return getOffsetParent(offsetParent);
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}
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return offsetParent;
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}
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function isOffsetContainer(element) {
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const { nodeName } = element;
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if (nodeName === 'BODY') {
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return false;
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}
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return nodeName === 'HTML' || getOffsetParent(element.firstElementChild) === element;
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}
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/**
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* Finds the root node (document, shadowDOM root) of the given element
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* @method
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* @memberof Popper.Utils
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* @argument {Element} node
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* @returns {Element} root node
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*/
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function getRoot(node) {
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if (node.parentNode !== null) {
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return getRoot(node.parentNode);
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}
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return node;
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}
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/**
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* Finds the offset parent common to the two provided nodes
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* @method
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* @memberof Popper.Utils
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* @argument {Element} element1
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* @argument {Element} element2
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* @returns {Element} common offset parent
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*/
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function findCommonOffsetParent(element1, element2) {
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// This check is needed to avoid errors in case one of the elements isn't defined for any reason
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if (!element1 || !element1.nodeType || !element2 || !element2.nodeType) {
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return document.documentElement;
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}
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// Here we make sure to give as "start" the element that comes first in the DOM
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const order = element1.compareDocumentPosition(element2) & Node.DOCUMENT_POSITION_FOLLOWING;
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const start = order ? element1 : element2;
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const end = order ? element2 : element1;
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// Get common ancestor container
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const range = document.createRange();
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range.setStart(start, 0);
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range.setEnd(end, 0);
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const { commonAncestorContainer } = range;
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// Both nodes are inside #document
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if (element1 !== commonAncestorContainer && element2 !== commonAncestorContainer || start.contains(end)) {
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if (isOffsetContainer(commonAncestorContainer)) {
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return commonAncestorContainer;
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}
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return getOffsetParent(commonAncestorContainer);
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}
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// one of the nodes is inside shadowDOM, find which one
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const element1root = getRoot(element1);
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if (element1root.host) {
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return findCommonOffsetParent(element1root.host, element2);
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} else {
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return findCommonOffsetParent(element1, getRoot(element2).host);
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}
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}
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/**
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* Gets the scroll value of the given element in the given side (top and left)
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* @method
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* @memberof Popper.Utils
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* @argument {Element} element
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* @argument {String} side `top` or `left`
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* @returns {number} amount of scrolled pixels
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*/
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function getScroll(element, side = 'top') {
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const upperSide = side === 'top' ? 'scrollTop' : 'scrollLeft';
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const nodeName = element.nodeName;
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if (nodeName === 'BODY' || nodeName === 'HTML') {
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const html = element.ownerDocument.documentElement;
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const scrollingElement = element.ownerDocument.scrollingElement || html;
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return scrollingElement[upperSide];
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}
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return element[upperSide];
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}
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/*
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* Sum or subtract the element scroll values (left and top) from a given rect object
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* @method
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* @memberof Popper.Utils
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* @param {Object} rect - Rect object you want to change
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* @param {HTMLElement} element - The element from the function reads the scroll values
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* @param {Boolean} subtract - set to true if you want to subtract the scroll values
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* @return {Object} rect - The modifier rect object
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*/
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function includeScroll(rect, element, subtract = false) {
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const scrollTop = getScroll(element, 'top');
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const scrollLeft = getScroll(element, 'left');
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const modifier = subtract ? -1 : 1;
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rect.top += scrollTop * modifier;
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rect.bottom += scrollTop * modifier;
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rect.left += scrollLeft * modifier;
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rect.right += scrollLeft * modifier;
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return rect;
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}
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/*
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* Helper to detect borders of a given element
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* @method
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* @memberof Popper.Utils
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* @param {CSSStyleDeclaration} styles
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* Result of `getStyleComputedProperty` on the given element
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* @param {String} axis - `x` or `y`
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* @return {number} borders - The borders size of the given axis
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*/
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function getBordersSize(styles, axis) {
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const sideA = axis === 'x' ? 'Left' : 'Top';
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const sideB = sideA === 'Left' ? 'Right' : 'Bottom';
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return parseFloat(styles[`border${sideA}Width`]) + parseFloat(styles[`border${sideB}Width`]);
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}
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function getSize(axis, body, html, computedStyle) {
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return Math.max(body[`offset${axis}`], body[`scroll${axis}`], html[`client${axis}`], html[`offset${axis}`], html[`scroll${axis}`], isIE(10) ? parseInt(html[`offset${axis}`]) + parseInt(computedStyle[`margin${axis === 'Height' ? 'Top' : 'Left'}`]) + parseInt(computedStyle[`margin${axis === 'Height' ? 'Bottom' : 'Right'}`]) : 0);
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}
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function getWindowSizes(document) {
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const body = document.body;
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const html = document.documentElement;
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const computedStyle = isIE(10) && getComputedStyle(html);
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return {
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height: getSize('Height', body, html, computedStyle),
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width: getSize('Width', body, html, computedStyle)
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};
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}
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var _extends = Object.assign || function (target) {
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for (var i = 1; i < arguments.length; i++) {
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var source = arguments[i];
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for (var key in source) {
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if (Object.prototype.hasOwnProperty.call(source, key)) {
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target[key] = source[key];
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}
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}
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}
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return target;
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};
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/**
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* Given element offsets, generate an output similar to getBoundingClientRect
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* @method
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* @memberof Popper.Utils
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* @argument {Object} offsets
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* @returns {Object} ClientRect like output
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*/
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function getClientRect(offsets) {
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return _extends({}, offsets, {
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right: offsets.left + offsets.width,
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bottom: offsets.top + offsets.height
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});
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}
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/**
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* Get bounding client rect of given element
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* @method
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* @memberof Popper.Utils
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* @param {HTMLElement} element
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* @return {Object} client rect
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*/
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function getBoundingClientRect(element) {
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let rect = {};
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// IE10 10 FIX: Please, don't ask, the element isn't
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// considered in DOM in some circumstances...
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// This isn't reproducible in IE10 compatibility mode of IE11
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try {
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if (isIE(10)) {
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rect = element.getBoundingClientRect();
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const scrollTop = getScroll(element, 'top');
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const scrollLeft = getScroll(element, 'left');
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rect.top += scrollTop;
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rect.left += scrollLeft;
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rect.bottom += scrollTop;
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rect.right += scrollLeft;
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} else {
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rect = element.getBoundingClientRect();
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}
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} catch (e) {}
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const result = {
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left: rect.left,
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top: rect.top,
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width: rect.right - rect.left,
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height: rect.bottom - rect.top
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};
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// subtract scrollbar size from sizes
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const sizes = element.nodeName === 'HTML' ? getWindowSizes(element.ownerDocument) : {};
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const width = sizes.width || element.clientWidth || result.width;
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const height = sizes.height || element.clientHeight || result.height;
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let horizScrollbar = element.offsetWidth - width;
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let vertScrollbar = element.offsetHeight - height;
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// if an hypothetical scrollbar is detected, we must be sure it's not a `border`
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// we make this check conditional for performance reasons
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if (horizScrollbar || vertScrollbar) {
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const styles = getStyleComputedProperty(element);
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horizScrollbar -= getBordersSize(styles, 'x');
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vertScrollbar -= getBordersSize(styles, 'y');
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result.width -= horizScrollbar;
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result.height -= vertScrollbar;
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}
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return getClientRect(result);
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}
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function getOffsetRectRelativeToArbitraryNode(children, parent, fixedPosition = false) {
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const isIE10 = isIE(10);
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const isHTML = parent.nodeName === 'HTML';
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const childrenRect = getBoundingClientRect(children);
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const parentRect = getBoundingClientRect(parent);
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const scrollParent = getScrollParent(children);
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const styles = getStyleComputedProperty(parent);
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const borderTopWidth = parseFloat(styles.borderTopWidth);
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const borderLeftWidth = parseFloat(styles.borderLeftWidth);
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// In cases where the parent is fixed, we must ignore negative scroll in offset calc
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if (fixedPosition && isHTML) {
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parentRect.top = Math.max(parentRect.top, 0);
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parentRect.left = Math.max(parentRect.left, 0);
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}
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let offsets = getClientRect({
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top: childrenRect.top - parentRect.top - borderTopWidth,
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left: childrenRect.left - parentRect.left - borderLeftWidth,
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width: childrenRect.width,
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height: childrenRect.height
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});
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offsets.marginTop = 0;
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offsets.marginLeft = 0;
|
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|
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// Subtract margins of documentElement in case it's being used as parent
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// we do this only on HTML because it's the only element that behaves
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// differently when margins are applied to it. The margins are included in
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// the box of the documentElement, in the other cases not.
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if (!isIE10 && isHTML) {
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const marginTop = parseFloat(styles.marginTop);
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const marginLeft = parseFloat(styles.marginLeft);
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offsets.top -= borderTopWidth - marginTop;
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offsets.bottom -= borderTopWidth - marginTop;
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offsets.left -= borderLeftWidth - marginLeft;
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offsets.right -= borderLeftWidth - marginLeft;
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// Attach marginTop and marginLeft because in some circumstances we may need them
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offsets.marginTop = marginTop;
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offsets.marginLeft = marginLeft;
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}
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if (isIE10 && !fixedPosition ? parent.contains(scrollParent) : parent === scrollParent && scrollParent.nodeName !== 'BODY') {
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offsets = includeScroll(offsets, parent);
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}
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return offsets;
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}
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function getViewportOffsetRectRelativeToArtbitraryNode(element, excludeScroll = false) {
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const html = element.ownerDocument.documentElement;
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const relativeOffset = getOffsetRectRelativeToArbitraryNode(element, html);
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const width = Math.max(html.clientWidth, window.innerWidth || 0);
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const height = Math.max(html.clientHeight, window.innerHeight || 0);
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const scrollTop = !excludeScroll ? getScroll(html) : 0;
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const scrollLeft = !excludeScroll ? getScroll(html, 'left') : 0;
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const offset = {
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top: scrollTop - relativeOffset.top + relativeOffset.marginTop,
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left: scrollLeft - relativeOffset.left + relativeOffset.marginLeft,
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width,
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height
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};
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return getClientRect(offset);
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}
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|
|
/**
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* Check if the given element is fixed or is inside a fixed parent
|
|
* @method
|
|
* @memberof Popper.Utils
|
|
* @argument {Element} element
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|
* @argument {Element} customContainer
|
|
* @returns {Boolean} answer to "isFixed?"
|
|
*/
|
|
function isFixed(element) {
|
|
const nodeName = element.nodeName;
|
|
if (nodeName === 'BODY' || nodeName === 'HTML') {
|
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return false;
|
|
}
|
|
if (getStyleComputedProperty(element, 'position') === 'fixed') {
|
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return true;
|
|
}
|
|
const parentNode = getParentNode(element);
|
|
if (!parentNode) {
|
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return false;
|
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}
|
|
return isFixed(parentNode);
|
|
}
|
|
|
|
/**
|
|
* Finds the first parent of an element that has a transformed property defined
|
|
* @method
|
|
* @memberof Popper.Utils
|
|
* @argument {Element} element
|
|
* @returns {Element} first transformed parent or documentElement
|
|
*/
|
|
|
|
function getFixedPositionOffsetParent(element) {
|
|
// This check is needed to avoid errors in case one of the elements isn't defined for any reason
|
|
if (!element || !element.parentElement || isIE()) {
|
|
return document.documentElement;
|
|
}
|
|
let el = element.parentElement;
|
|
while (el && getStyleComputedProperty(el, 'transform') === 'none') {
|
|
el = el.parentElement;
|
|
}
|
|
return el || document.documentElement;
|
|
}
|
|
|
|
/**
|
|
* Computed the boundaries limits and return them
|
|
* @method
|
|
* @memberof Popper.Utils
|
|
* @param {HTMLElement} popper
|
|
* @param {HTMLElement} reference
|
|
* @param {number} padding
|
|
* @param {HTMLElement} boundariesElement - Element used to define the boundaries
|
|
* @param {Boolean} fixedPosition - Is in fixed position mode
|
|
* @returns {Object} Coordinates of the boundaries
|
|
*/
|
|
function getBoundaries(popper, reference, padding, boundariesElement, fixedPosition = false) {
|
|
// NOTE: 1 DOM access here
|
|
|
|
let boundaries = { top: 0, left: 0 };
|
|
const offsetParent = fixedPosition ? getFixedPositionOffsetParent(popper) : findCommonOffsetParent(popper, getReferenceNode(reference));
|
|
|
|
// Handle viewport case
|
|
if (boundariesElement === 'viewport') {
|
|
boundaries = getViewportOffsetRectRelativeToArtbitraryNode(offsetParent, fixedPosition);
|
|
} else {
|
|
// Handle other cases based on DOM element used as boundaries
|
|
let boundariesNode;
|
|
if (boundariesElement === 'scrollParent') {
|
|
boundariesNode = getScrollParent(getParentNode(reference));
|
|
if (boundariesNode.nodeName === 'BODY') {
|
|
boundariesNode = popper.ownerDocument.documentElement;
|
|
}
|
|
} else if (boundariesElement === 'window') {
|
|
boundariesNode = popper.ownerDocument.documentElement;
|
|
} else {
|
|
boundariesNode = boundariesElement;
|
|
}
|
|
|
|
const offsets = getOffsetRectRelativeToArbitraryNode(boundariesNode, offsetParent, fixedPosition);
|
|
|
|
// In case of HTML, we need a different computation
|
|
if (boundariesNode.nodeName === 'HTML' && !isFixed(offsetParent)) {
|
|
const { height, width } = getWindowSizes(popper.ownerDocument);
|
|
boundaries.top += offsets.top - offsets.marginTop;
|
|
boundaries.bottom = height + offsets.top;
|
|
boundaries.left += offsets.left - offsets.marginLeft;
|
|
boundaries.right = width + offsets.left;
|
|
} else {
|
|
// for all the other DOM elements, this one is good
|
|
boundaries = offsets;
|
|
}
|
|
}
|
|
|
|
// Add paddings
|
|
padding = padding || 0;
|
|
const isPaddingNumber = typeof padding === 'number';
|
|
boundaries.left += isPaddingNumber ? padding : padding.left || 0;
|
|
boundaries.top += isPaddingNumber ? padding : padding.top || 0;
|
|
boundaries.right -= isPaddingNumber ? padding : padding.right || 0;
|
|
boundaries.bottom -= isPaddingNumber ? padding : padding.bottom || 0;
|
|
|
|
return boundaries;
|
|
}
|
|
|
|
function getArea({ width, height }) {
|
|
return width * height;
|
|
}
|
|
|
|
/**
|
|
* Utility used to transform the `auto` placement to the placement with more
|
|
* available space.
|
|
* @method
|
|
* @memberof Popper.Utils
|
|
* @argument {Object} data - The data object generated by update method
|
|
* @argument {Object} options - Modifiers configuration and options
|
|
* @returns {Object} The data object, properly modified
|
|
*/
|
|
function computeAutoPlacement(placement, refRect, popper, reference, boundariesElement, padding = 0) {
|
|
if (placement.indexOf('auto') === -1) {
|
|
return placement;
|
|
}
|
|
|
|
const boundaries = getBoundaries(popper, reference, padding, boundariesElement);
|
|
|
|
const rects = {
|
|
top: {
|
|
width: boundaries.width,
|
|
height: refRect.top - boundaries.top
|
|
},
|
|
right: {
|
|
width: boundaries.right - refRect.right,
|
|
height: boundaries.height
|
|
},
|
|
bottom: {
|
|
width: boundaries.width,
|
|
height: boundaries.bottom - refRect.bottom
|
|
},
|
|
left: {
|
|
width: refRect.left - boundaries.left,
|
|
height: boundaries.height
|
|
}
|
|
};
|
|
|
|
const sortedAreas = Object.keys(rects).map(key => _extends({
|
|
key
|
|
}, rects[key], {
|
|
area: getArea(rects[key])
|
|
})).sort((a, b) => b.area - a.area);
|
|
|
|
const filteredAreas = sortedAreas.filter(({ width, height }) => width >= popper.clientWidth && height >= popper.clientHeight);
|
|
|
|
const computedPlacement = filteredAreas.length > 0 ? filteredAreas[0].key : sortedAreas[0].key;
|
|
|
|
const variation = placement.split('-')[1];
|
|
|
|
return computedPlacement + (variation ? `-${variation}` : '');
|
|
}
|
|
|
|
/**
|
|
* Get offsets to the reference element
|
|
* @method
|
|
* @memberof Popper.Utils
|
|
* @param {Object} state
|
|
* @param {Element} popper - the popper element
|
|
* @param {Element} reference - the reference element (the popper will be relative to this)
|
|
* @param {Element} fixedPosition - is in fixed position mode
|
|
* @returns {Object} An object containing the offsets which will be applied to the popper
|
|
*/
|
|
function getReferenceOffsets(state, popper, reference, fixedPosition = null) {
|
|
const commonOffsetParent = fixedPosition ? getFixedPositionOffsetParent(popper) : findCommonOffsetParent(popper, getReferenceNode(reference));
|
|
return getOffsetRectRelativeToArbitraryNode(reference, commonOffsetParent, fixedPosition);
|
|
}
|
|
|
|
/**
|
|
* Get the outer sizes of the given element (offset size + margins)
|
|
* @method
|
|
* @memberof Popper.Utils
|
|
* @argument {Element} element
|
|
* @returns {Object} object containing width and height properties
|
|
*/
|
|
function getOuterSizes(element) {
|
|
const window = element.ownerDocument.defaultView;
|
|
const styles = window.getComputedStyle(element);
|
|
const x = parseFloat(styles.marginTop || 0) + parseFloat(styles.marginBottom || 0);
|
|
const y = parseFloat(styles.marginLeft || 0) + parseFloat(styles.marginRight || 0);
|
|
const result = {
|
|
width: element.offsetWidth + y,
|
|
height: element.offsetHeight + x
|
|
};
|
|
return result;
|
|
}
|
|
|
|
/**
|
|
* Get the opposite placement of the given one
|
|
* @method
|
|
* @memberof Popper.Utils
|
|
* @argument {String} placement
|
|
* @returns {String} flipped placement
|
|
*/
|
|
function getOppositePlacement(placement) {
|
|
const hash = { left: 'right', right: 'left', bottom: 'top', top: 'bottom' };
|
|
return placement.replace(/left|right|bottom|top/g, matched => hash[matched]);
|
|
}
|
|
|
|
/**
|
|
* Get offsets to the popper
|
|
* @method
|
|
* @memberof Popper.Utils
|
|
* @param {Object} position - CSS position the Popper will get applied
|
|
* @param {HTMLElement} popper - the popper element
|
|
* @param {Object} referenceOffsets - the reference offsets (the popper will be relative to this)
|
|
* @param {String} placement - one of the valid placement options
|
|
* @returns {Object} popperOffsets - An object containing the offsets which will be applied to the popper
|
|
*/
|
|
function getPopperOffsets(popper, referenceOffsets, placement) {
|
|
placement = placement.split('-')[0];
|
|
|
|
// Get popper node sizes
|
|
const popperRect = getOuterSizes(popper);
|
|
|
|
// Add position, width and height to our offsets object
|
|
const popperOffsets = {
|
|
width: popperRect.width,
|
|
height: popperRect.height
|
|
};
|
|
|
|
// depending by the popper placement we have to compute its offsets slightly differently
|
|
const isHoriz = ['right', 'left'].indexOf(placement) !== -1;
|
|
const mainSide = isHoriz ? 'top' : 'left';
|
|
const secondarySide = isHoriz ? 'left' : 'top';
|
|
const measurement = isHoriz ? 'height' : 'width';
|
|
const secondaryMeasurement = !isHoriz ? 'height' : 'width';
|
|
|
|
popperOffsets[mainSide] = referenceOffsets[mainSide] + referenceOffsets[measurement] / 2 - popperRect[measurement] / 2;
|
|
if (placement === secondarySide) {
|
|
popperOffsets[secondarySide] = referenceOffsets[secondarySide] - popperRect[secondaryMeasurement];
|
|
} else {
|
|
popperOffsets[secondarySide] = referenceOffsets[getOppositePlacement(secondarySide)];
|
|
}
|
|
|
|
return popperOffsets;
|
|
}
|
|
|
|
/**
|
|
* Mimics the `find` method of Array
|
|
* @method
|
|
* @memberof Popper.Utils
|
|
* @argument {Array} arr
|
|
* @argument prop
|
|
* @argument value
|
|
* @returns index or -1
|
|
*/
|
|
function find(arr, check) {
|
|
// use native find if supported
|
|
if (Array.prototype.find) {
|
|
return arr.find(check);
|
|
}
|
|
|
|
// use `filter` to obtain the same behavior of `find`
|
|
return arr.filter(check)[0];
|
|
}
|
|
|
|
/**
|
|
* Return the index of the matching object
|
|
* @method
|
|
* @memberof Popper.Utils
|
|
* @argument {Array} arr
|
|
* @argument prop
|
|
* @argument value
|
|
* @returns index or -1
|
|
*/
|
|
function findIndex(arr, prop, value) {
|
|
// use native findIndex if supported
|
|
if (Array.prototype.findIndex) {
|
|
return arr.findIndex(cur => cur[prop] === value);
|
|
}
|
|
|
|
// use `find` + `indexOf` if `findIndex` isn't supported
|
|
const match = find(arr, obj => obj[prop] === value);
|
|
return arr.indexOf(match);
|
|
}
|
|
|
|
/**
|
|
* Loop trough the list of modifiers and run them in order,
|
|
* each of them will then edit the data object.
|
|
* @method
|
|
* @memberof Popper.Utils
|
|
* @param {dataObject} data
|
|
* @param {Array} modifiers
|
|
* @param {String} ends - Optional modifier name used as stopper
|
|
* @returns {dataObject}
|
|
*/
|
|
function runModifiers(modifiers, data, ends) {
|
|
const modifiersToRun = ends === undefined ? modifiers : modifiers.slice(0, findIndex(modifiers, 'name', ends));
|
|
|
|
modifiersToRun.forEach(modifier => {
|
|
if (modifier['function']) {
|
|
// eslint-disable-line dot-notation
|
|
console.warn('`modifier.function` is deprecated, use `modifier.fn`!');
|
|
}
|
|
const fn = modifier['function'] || modifier.fn; // eslint-disable-line dot-notation
|
|
if (modifier.enabled && isFunction(fn)) {
|
|
// Add properties to offsets to make them a complete clientRect object
|
|
// we do this before each modifier to make sure the previous one doesn't
|
|
// mess with these values
|
|
data.offsets.popper = getClientRect(data.offsets.popper);
|
|
data.offsets.reference = getClientRect(data.offsets.reference);
|
|
|
|
data = fn(data, modifier);
|
|
}
|
|
});
|
|
|
|
return data;
|
|
}
|
|
|
|
/**
|
|
* Updates the position of the popper, computing the new offsets and applying
|
|
* the new style.<br />
|
|
* Prefer `scheduleUpdate` over `update` because of performance reasons.
|
|
* @method
|
|
* @memberof Popper
|
|
*/
|
|
function update() {
|
|
// if popper is destroyed, don't perform any further update
|
|
if (this.state.isDestroyed) {
|
|
return;
|
|
}
|
|
|
|
let data = {
|
|
instance: this,
|
|
styles: {},
|
|
arrowStyles: {},
|
|
attributes: {},
|
|
flipped: false,
|
|
offsets: {}
|
|
};
|
|
|
|
// compute reference element offsets
|
|
data.offsets.reference = getReferenceOffsets(this.state, this.popper, this.reference, this.options.positionFixed);
|
|
|
|
// compute auto placement, store placement inside the data object,
|
|
// modifiers will be able to edit `placement` if needed
|
|
// and refer to originalPlacement to know the original value
|
|
data.placement = computeAutoPlacement(this.options.placement, data.offsets.reference, this.popper, this.reference, this.options.modifiers.flip.boundariesElement, this.options.modifiers.flip.padding);
|
|
|
|
// store the computed placement inside `originalPlacement`
|
|
data.originalPlacement = data.placement;
|
|
|
|
data.positionFixed = this.options.positionFixed;
|
|
|
|
// compute the popper offsets
|
|
data.offsets.popper = getPopperOffsets(this.popper, data.offsets.reference, data.placement);
|
|
|
|
data.offsets.popper.position = this.options.positionFixed ? 'fixed' : 'absolute';
|
|
|
|
// run the modifiers
|
|
data = runModifiers(this.modifiers, data);
|
|
|
|
// the first `update` will call `onCreate` callback
|
|
// the other ones will call `onUpdate` callback
|
|
if (!this.state.isCreated) {
|
|
this.state.isCreated = true;
|
|
this.options.onCreate(data);
|
|
} else {
|
|
this.options.onUpdate(data);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Helper used to know if the given modifier is enabled.
|
|
* @method
|
|
* @memberof Popper.Utils
|
|
* @returns {Boolean}
|
|
*/
|
|
function isModifierEnabled(modifiers, modifierName) {
|
|
return modifiers.some(({ name, enabled }) => enabled && name === modifierName);
|
|
}
|
|
|
|
/**
|
|
* Get the prefixed supported property name
|
|
* @method
|
|
* @memberof Popper.Utils
|
|
* @argument {String} property (camelCase)
|
|
* @returns {String} prefixed property (camelCase or PascalCase, depending on the vendor prefix)
|
|
*/
|
|
function getSupportedPropertyName(property) {
|
|
const prefixes = [false, 'ms', 'Webkit', 'Moz', 'O'];
|
|
const upperProp = property.charAt(0).toUpperCase() + property.slice(1);
|
|
|
|
for (let i = 0; i < prefixes.length; i++) {
|
|
const prefix = prefixes[i];
|
|
const toCheck = prefix ? `${prefix}${upperProp}` : property;
|
|
if (typeof document.body.style[toCheck] !== 'undefined') {
|
|
return toCheck;
|
|
}
|
|
}
|
|
return null;
|
|
}
|
|
|
|
/**
|
|
* Destroys the popper.
|
|
* @method
|
|
* @memberof Popper
|
|
*/
|
|
function destroy() {
|
|
this.state.isDestroyed = true;
|
|
|
|
// touch DOM only if `applyStyle` modifier is enabled
|
|
if (isModifierEnabled(this.modifiers, 'applyStyle')) {
|
|
this.popper.removeAttribute('x-placement');
|
|
this.popper.style.position = '';
|
|
this.popper.style.top = '';
|
|
this.popper.style.left = '';
|
|
this.popper.style.right = '';
|
|
this.popper.style.bottom = '';
|
|
this.popper.style.willChange = '';
|
|
this.popper.style[getSupportedPropertyName('transform')] = '';
|
|
}
|
|
|
|
this.disableEventListeners();
|
|
|
|
// remove the popper if user explicitly asked for the deletion on destroy
|
|
// do not use `remove` because IE11 doesn't support it
|
|
if (this.options.removeOnDestroy) {
|
|
this.popper.parentNode.removeChild(this.popper);
|
|
}
|
|
return this;
|
|
}
|
|
|
|
/**
|
|
* Get the window associated with the element
|
|
* @argument {Element} element
|
|
* @returns {Window}
|
|
*/
|
|
function getWindow(element) {
|
|
const ownerDocument = element.ownerDocument;
|
|
return ownerDocument ? ownerDocument.defaultView : window;
|
|
}
|
|
|
|
function attachToScrollParents(scrollParent, event, callback, scrollParents) {
|
|
const isBody = scrollParent.nodeName === 'BODY';
|
|
const target = isBody ? scrollParent.ownerDocument.defaultView : scrollParent;
|
|
target.addEventListener(event, callback, { passive: true });
|
|
|
|
if (!isBody) {
|
|
attachToScrollParents(getScrollParent(target.parentNode), event, callback, scrollParents);
|
|
}
|
|
scrollParents.push(target);
|
|
}
|
|
|
|
/**
|
|
* Setup needed event listeners used to update the popper position
|
|
* @method
|
|
* @memberof Popper.Utils
|
|
* @private
|
|
*/
|
|
function setupEventListeners(reference, options, state, updateBound) {
|
|
// Resize event listener on window
|
|
state.updateBound = updateBound;
|
|
getWindow(reference).addEventListener('resize', state.updateBound, { passive: true });
|
|
|
|
// Scroll event listener on scroll parents
|
|
const scrollElement = getScrollParent(reference);
|
|
attachToScrollParents(scrollElement, 'scroll', state.updateBound, state.scrollParents);
|
|
state.scrollElement = scrollElement;
|
|
state.eventsEnabled = true;
|
|
|
|
return state;
|
|
}
|
|
|
|
/**
|
|
* It will add resize/scroll events and start recalculating
|
|
* position of the popper element when they are triggered.
|
|
* @method
|
|
* @memberof Popper
|
|
*/
|
|
function enableEventListeners() {
|
|
if (!this.state.eventsEnabled) {
|
|
this.state = setupEventListeners(this.reference, this.options, this.state, this.scheduleUpdate);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Remove event listeners used to update the popper position
|
|
* @method
|
|
* @memberof Popper.Utils
|
|
* @private
|
|
*/
|
|
function removeEventListeners(reference, state) {
|
|
// Remove resize event listener on window
|
|
getWindow(reference).removeEventListener('resize', state.updateBound);
|
|
|
|
// Remove scroll event listener on scroll parents
|
|
state.scrollParents.forEach(target => {
|
|
target.removeEventListener('scroll', state.updateBound);
|
|
});
|
|
|
|
// Reset state
|
|
state.updateBound = null;
|
|
state.scrollParents = [];
|
|
state.scrollElement = null;
|
|
state.eventsEnabled = false;
|
|
return state;
|
|
}
|
|
|
|
/**
|
|
* It will remove resize/scroll events and won't recalculate popper position
|
|
* when they are triggered. It also won't trigger `onUpdate` callback anymore,
|
|
* unless you call `update` method manually.
|
|
* @method
|
|
* @memberof Popper
|
|
*/
|
|
function disableEventListeners() {
|
|
if (this.state.eventsEnabled) {
|
|
cancelAnimationFrame(this.scheduleUpdate);
|
|
this.state = removeEventListeners(this.reference, this.state);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Tells if a given input is a number
|
|
* @method
|
|
* @memberof Popper.Utils
|
|
* @param {*} input to check
|
|
* @return {Boolean}
|
|
*/
|
|
function isNumeric(n) {
|
|
return n !== '' && !isNaN(parseFloat(n)) && isFinite(n);
|
|
}
|
|
|
|
/**
|
|
* Set the style to the given popper
|
|
* @method
|
|
* @memberof Popper.Utils
|
|
* @argument {Element} element - Element to apply the style to
|
|
* @argument {Object} styles
|
|
* Object with a list of properties and values which will be applied to the element
|
|
*/
|
|
function setStyles(element, styles) {
|
|
Object.keys(styles).forEach(prop => {
|
|
let unit = '';
|
|
// add unit if the value is numeric and is one of the following
|
|
if (['width', 'height', 'top', 'right', 'bottom', 'left'].indexOf(prop) !== -1 && isNumeric(styles[prop])) {
|
|
unit = 'px';
|
|
}
|
|
element.style[prop] = styles[prop] + unit;
|
|
});
|
|
}
|
|
|
|
/**
|
|
* Set the attributes to the given popper
|
|
* @method
|
|
* @memberof Popper.Utils
|
|
* @argument {Element} element - Element to apply the attributes to
|
|
* @argument {Object} styles
|
|
* Object with a list of properties and values which will be applied to the element
|
|
*/
|
|
function setAttributes(element, attributes) {
|
|
Object.keys(attributes).forEach(function (prop) {
|
|
const value = attributes[prop];
|
|
if (value !== false) {
|
|
element.setAttribute(prop, attributes[prop]);
|
|
} else {
|
|
element.removeAttribute(prop);
|
|
}
|
|
});
|
|
}
|
|
|
|
/**
|
|
* @function
|
|
* @memberof Modifiers
|
|
* @argument {Object} data - The data object generated by `update` method
|
|
* @argument {Object} data.styles - List of style properties - values to apply to popper element
|
|
* @argument {Object} data.attributes - List of attribute properties - values to apply to popper element
|
|
* @argument {Object} options - Modifiers configuration and options
|
|
* @returns {Object} The same data object
|
|
*/
|
|
function applyStyle(data) {
|
|
// any property present in `data.styles` will be applied to the popper,
|
|
// in this way we can make the 3rd party modifiers add custom styles to it
|
|
// Be aware, modifiers could override the properties defined in the previous
|
|
// lines of this modifier!
|
|
setStyles(data.instance.popper, data.styles);
|
|
|
|
// any property present in `data.attributes` will be applied to the popper,
|
|
// they will be set as HTML attributes of the element
|
|
setAttributes(data.instance.popper, data.attributes);
|
|
|
|
// if arrowElement is defined and arrowStyles has some properties
|
|
if (data.arrowElement && Object.keys(data.arrowStyles).length) {
|
|
setStyles(data.arrowElement, data.arrowStyles);
|
|
}
|
|
|
|
return data;
|
|
}
|
|
|
|
/**
|
|
* Set the x-placement attribute before everything else because it could be used
|
|
* to add margins to the popper margins needs to be calculated to get the
|
|
* correct popper offsets.
|
|
* @method
|
|
* @memberof Popper.modifiers
|
|
* @param {HTMLElement} reference - The reference element used to position the popper
|
|
* @param {HTMLElement} popper - The HTML element used as popper
|
|
* @param {Object} options - Popper.js options
|
|
*/
|
|
function applyStyleOnLoad(reference, popper, options, modifierOptions, state) {
|
|
// compute reference element offsets
|
|
const referenceOffsets = getReferenceOffsets(state, popper, reference, options.positionFixed);
|
|
|
|
// compute auto placement, store placement inside the data object,
|
|
// modifiers will be able to edit `placement` if needed
|
|
// and refer to originalPlacement to know the original value
|
|
const placement = computeAutoPlacement(options.placement, referenceOffsets, popper, reference, options.modifiers.flip.boundariesElement, options.modifiers.flip.padding);
|
|
|
|
popper.setAttribute('x-placement', placement);
|
|
|
|
// Apply `position` to popper before anything else because
|
|
// without the position applied we can't guarantee correct computations
|
|
setStyles(popper, { position: options.positionFixed ? 'fixed' : 'absolute' });
|
|
|
|
return options;
|
|
}
|
|
|
|
/**
|
|
* @function
|
|
* @memberof Popper.Utils
|
|
* @argument {Object} data - The data object generated by `update` method
|
|
* @argument {Boolean} shouldRound - If the offsets should be rounded at all
|
|
* @returns {Object} The popper's position offsets rounded
|
|
*
|
|
* The tale of pixel-perfect positioning. It's still not 100% perfect, but as
|
|
* good as it can be within reason.
|
|
* Discussion here: https://github.com/FezVrasta/popper.js/pull/715
|
|
*
|
|
* Low DPI screens cause a popper to be blurry if not using full pixels (Safari
|
|
* as well on High DPI screens).
|
|
*
|
|
* Firefox prefers no rounding for positioning and does not have blurriness on
|
|
* high DPI screens.
|
|
*
|
|
* Only horizontal placement and left/right values need to be considered.
|
|
*/
|
|
function getRoundedOffsets(data, shouldRound) {
|
|
const { popper, reference } = data.offsets;
|
|
const { round, floor } = Math;
|
|
const noRound = v => v;
|
|
|
|
const referenceWidth = round(reference.width);
|
|
const popperWidth = round(popper.width);
|
|
|
|
const isVertical = ['left', 'right'].indexOf(data.placement) !== -1;
|
|
const isVariation = data.placement.indexOf('-') !== -1;
|
|
const sameWidthParity = referenceWidth % 2 === popperWidth % 2;
|
|
const bothOddWidth = referenceWidth % 2 === 1 && popperWidth % 2 === 1;
|
|
|
|
const horizontalToInteger = !shouldRound ? noRound : isVertical || isVariation || sameWidthParity ? round : floor;
|
|
const verticalToInteger = !shouldRound ? noRound : round;
|
|
|
|
return {
|
|
left: horizontalToInteger(bothOddWidth && !isVariation && shouldRound ? popper.left - 1 : popper.left),
|
|
top: verticalToInteger(popper.top),
|
|
bottom: verticalToInteger(popper.bottom),
|
|
right: horizontalToInteger(popper.right)
|
|
};
|
|
}
|
|
|
|
const isFirefox = isBrowser && /Firefox/i.test(navigator.userAgent);
|
|
|
|
/**
|
|
* @function
|
|
* @memberof Modifiers
|
|
* @argument {Object} data - The data object generated by `update` method
|
|
* @argument {Object} options - Modifiers configuration and options
|
|
* @returns {Object} The data object, properly modified
|
|
*/
|
|
function computeStyle(data, options) {
|
|
const { x, y } = options;
|
|
const { popper } = data.offsets;
|
|
|
|
// Remove this legacy support in Popper.js v2
|
|
const legacyGpuAccelerationOption = find(data.instance.modifiers, modifier => modifier.name === 'applyStyle').gpuAcceleration;
|
|
if (legacyGpuAccelerationOption !== undefined) {
|
|
console.warn('WARNING: `gpuAcceleration` option moved to `computeStyle` modifier and will not be supported in future versions of Popper.js!');
|
|
}
|
|
const gpuAcceleration = legacyGpuAccelerationOption !== undefined ? legacyGpuAccelerationOption : options.gpuAcceleration;
|
|
|
|
const offsetParent = getOffsetParent(data.instance.popper);
|
|
const offsetParentRect = getBoundingClientRect(offsetParent);
|
|
|
|
// Styles
|
|
const styles = {
|
|
position: popper.position
|
|
};
|
|
|
|
const offsets = getRoundedOffsets(data, window.devicePixelRatio < 2 || !isFirefox);
|
|
|
|
const sideA = x === 'bottom' ? 'top' : 'bottom';
|
|
const sideB = y === 'right' ? 'left' : 'right';
|
|
|
|
// if gpuAcceleration is set to `true` and transform is supported,
|
|
// we use `translate3d` to apply the position to the popper we
|
|
// automatically use the supported prefixed version if needed
|
|
const prefixedProperty = getSupportedPropertyName('transform');
|
|
|
|
// now, let's make a step back and look at this code closely (wtf?)
|
|
// If the content of the popper grows once it's been positioned, it
|
|
// may happen that the popper gets misplaced because of the new content
|
|
// overflowing its reference element
|
|
// To avoid this problem, we provide two options (x and y), which allow
|
|
// the consumer to define the offset origin.
|
|
// If we position a popper on top of a reference element, we can set
|
|
// `x` to `top` to make the popper grow towards its top instead of
|
|
// its bottom.
|
|
let left, top;
|
|
if (sideA === 'bottom') {
|
|
// when offsetParent is <html> the positioning is relative to the bottom of the screen (excluding the scrollbar)
|
|
// and not the bottom of the html element
|
|
if (offsetParent.nodeName === 'HTML') {
|
|
top = -offsetParent.clientHeight + offsets.bottom;
|
|
} else {
|
|
top = -offsetParentRect.height + offsets.bottom;
|
|
}
|
|
} else {
|
|
top = offsets.top;
|
|
}
|
|
if (sideB === 'right') {
|
|
if (offsetParent.nodeName === 'HTML') {
|
|
left = -offsetParent.clientWidth + offsets.right;
|
|
} else {
|
|
left = -offsetParentRect.width + offsets.right;
|
|
}
|
|
} else {
|
|
left = offsets.left;
|
|
}
|
|
if (gpuAcceleration && prefixedProperty) {
|
|
styles[prefixedProperty] = `translate3d(${left}px, ${top}px, 0)`;
|
|
styles[sideA] = 0;
|
|
styles[sideB] = 0;
|
|
styles.willChange = 'transform';
|
|
} else {
|
|
// othwerise, we use the standard `top`, `left`, `bottom` and `right` properties
|
|
const invertTop = sideA === 'bottom' ? -1 : 1;
|
|
const invertLeft = sideB === 'right' ? -1 : 1;
|
|
styles[sideA] = top * invertTop;
|
|
styles[sideB] = left * invertLeft;
|
|
styles.willChange = `${sideA}, ${sideB}`;
|
|
}
|
|
|
|
// Attributes
|
|
const attributes = {
|
|
'x-placement': data.placement
|
|
};
|
|
|
|
// Update `data` attributes, styles and arrowStyles
|
|
data.attributes = _extends({}, attributes, data.attributes);
|
|
data.styles = _extends({}, styles, data.styles);
|
|
data.arrowStyles = _extends({}, data.offsets.arrow, data.arrowStyles);
|
|
|
|
return data;
|
|
}
|
|
|
|
/**
|
|
* Helper used to know if the given modifier depends from another one.<br />
|
|
* It checks if the needed modifier is listed and enabled.
|
|
* @method
|
|
* @memberof Popper.Utils
|
|
* @param {Array} modifiers - list of modifiers
|
|
* @param {String} requestingName - name of requesting modifier
|
|
* @param {String} requestedName - name of requested modifier
|
|
* @returns {Boolean}
|
|
*/
|
|
function isModifierRequired(modifiers, requestingName, requestedName) {
|
|
const requesting = find(modifiers, ({ name }) => name === requestingName);
|
|
|
|
const isRequired = !!requesting && modifiers.some(modifier => {
|
|
return modifier.name === requestedName && modifier.enabled && modifier.order < requesting.order;
|
|
});
|
|
|
|
if (!isRequired) {
|
|
const requesting = `\`${requestingName}\``;
|
|
const requested = `\`${requestedName}\``;
|
|
console.warn(`${requested} modifier is required by ${requesting} modifier in order to work, be sure to include it before ${requesting}!`);
|
|
}
|
|
return isRequired;
|
|
}
|
|
|
|
/**
|
|
* @function
|
|
* @memberof Modifiers
|
|
* @argument {Object} data - The data object generated by update method
|
|
* @argument {Object} options - Modifiers configuration and options
|
|
* @returns {Object} The data object, properly modified
|
|
*/
|
|
function arrow(data, options) {
|
|
// arrow depends on keepTogether in order to work
|
|
if (!isModifierRequired(data.instance.modifiers, 'arrow', 'keepTogether')) {
|
|
return data;
|
|
}
|
|
|
|
let arrowElement = options.element;
|
|
|
|
// if arrowElement is a string, suppose it's a CSS selector
|
|
if (typeof arrowElement === 'string') {
|
|
arrowElement = data.instance.popper.querySelector(arrowElement);
|
|
|
|
// if arrowElement is not found, don't run the modifier
|
|
if (!arrowElement) {
|
|
return data;
|
|
}
|
|
} else {
|
|
// if the arrowElement isn't a query selector we must check that the
|
|
// provided DOM node is child of its popper node
|
|
if (!data.instance.popper.contains(arrowElement)) {
|
|
console.warn('WARNING: `arrow.element` must be child of its popper element!');
|
|
return data;
|
|
}
|
|
}
|
|
|
|
const placement = data.placement.split('-')[0];
|
|
const { popper, reference } = data.offsets;
|
|
const isVertical = ['left', 'right'].indexOf(placement) !== -1;
|
|
|
|
const len = isVertical ? 'height' : 'width';
|
|
const sideCapitalized = isVertical ? 'Top' : 'Left';
|
|
const side = sideCapitalized.toLowerCase();
|
|
const altSide = isVertical ? 'left' : 'top';
|
|
const opSide = isVertical ? 'bottom' : 'right';
|
|
const arrowElementSize = getOuterSizes(arrowElement)[len];
|
|
|
|
//
|
|
// extends keepTogether behavior making sure the popper and its
|
|
// reference have enough pixels in conjunction
|
|
//
|
|
|
|
// top/left side
|
|
if (reference[opSide] - arrowElementSize < popper[side]) {
|
|
data.offsets.popper[side] -= popper[side] - (reference[opSide] - arrowElementSize);
|
|
}
|
|
// bottom/right side
|
|
if (reference[side] + arrowElementSize > popper[opSide]) {
|
|
data.offsets.popper[side] += reference[side] + arrowElementSize - popper[opSide];
|
|
}
|
|
data.offsets.popper = getClientRect(data.offsets.popper);
|
|
|
|
// compute center of the popper
|
|
const center = reference[side] + reference[len] / 2 - arrowElementSize / 2;
|
|
|
|
// Compute the sideValue using the updated popper offsets
|
|
// take popper margin in account because we don't have this info available
|
|
const css = getStyleComputedProperty(data.instance.popper);
|
|
const popperMarginSide = parseFloat(css[`margin${sideCapitalized}`]);
|
|
const popperBorderSide = parseFloat(css[`border${sideCapitalized}Width`]);
|
|
let sideValue = center - data.offsets.popper[side] - popperMarginSide - popperBorderSide;
|
|
|
|
// prevent arrowElement from being placed not contiguously to its popper
|
|
sideValue = Math.max(Math.min(popper[len] - arrowElementSize, sideValue), 0);
|
|
|
|
data.arrowElement = arrowElement;
|
|
data.offsets.arrow = {
|
|
[side]: Math.round(sideValue),
|
|
[altSide]: '' // make sure to unset any eventual altSide value from the DOM node
|
|
};
|
|
|
|
return data;
|
|
}
|
|
|
|
/**
|
|
* Get the opposite placement variation of the given one
|
|
* @method
|
|
* @memberof Popper.Utils
|
|
* @argument {String} placement variation
|
|
* @returns {String} flipped placement variation
|
|
*/
|
|
function getOppositeVariation(variation) {
|
|
if (variation === 'end') {
|
|
return 'start';
|
|
} else if (variation === 'start') {
|
|
return 'end';
|
|
}
|
|
return variation;
|
|
}
|
|
|
|
/**
|
|
* List of accepted placements to use as values of the `placement` option.<br />
|
|
* Valid placements are:
|
|
* - `auto`
|
|
* - `top`
|
|
* - `right`
|
|
* - `bottom`
|
|
* - `left`
|
|
*
|
|
* Each placement can have a variation from this list:
|
|
* - `-start`
|
|
* - `-end`
|
|
*
|
|
* Variations are interpreted easily if you think of them as the left to right
|
|
* written languages. Horizontally (`top` and `bottom`), `start` is left and `end`
|
|
* is right.<br />
|
|
* Vertically (`left` and `right`), `start` is top and `end` is bottom.
|
|
*
|
|
* Some valid examples are:
|
|
* - `top-end` (on top of reference, right aligned)
|
|
* - `right-start` (on right of reference, top aligned)
|
|
* - `bottom` (on bottom, centered)
|
|
* - `auto-end` (on the side with more space available, alignment depends by placement)
|
|
*
|
|
* @static
|
|
* @type {Array}
|
|
* @enum {String}
|
|
* @readonly
|
|
* @method placements
|
|
* @memberof Popper
|
|
*/
|
|
var placements = ['auto-start', 'auto', 'auto-end', 'top-start', 'top', 'top-end', 'right-start', 'right', 'right-end', 'bottom-end', 'bottom', 'bottom-start', 'left-end', 'left', 'left-start'];
|
|
|
|
// Get rid of `auto` `auto-start` and `auto-end`
|
|
const validPlacements = placements.slice(3);
|
|
|
|
/**
|
|
* Given an initial placement, returns all the subsequent placements
|
|
* clockwise (or counter-clockwise).
|
|
*
|
|
* @method
|
|
* @memberof Popper.Utils
|
|
* @argument {String} placement - A valid placement (it accepts variations)
|
|
* @argument {Boolean} counter - Set to true to walk the placements counterclockwise
|
|
* @returns {Array} placements including their variations
|
|
*/
|
|
function clockwise(placement, counter = false) {
|
|
const index = validPlacements.indexOf(placement);
|
|
const arr = validPlacements.slice(index + 1).concat(validPlacements.slice(0, index));
|
|
return counter ? arr.reverse() : arr;
|
|
}
|
|
|
|
const BEHAVIORS = {
|
|
FLIP: 'flip',
|
|
CLOCKWISE: 'clockwise',
|
|
COUNTERCLOCKWISE: 'counterclockwise'
|
|
};
|
|
|
|
/**
|
|
* @function
|
|
* @memberof Modifiers
|
|
* @argument {Object} data - The data object generated by update method
|
|
* @argument {Object} options - Modifiers configuration and options
|
|
* @returns {Object} The data object, properly modified
|
|
*/
|
|
function flip(data, options) {
|
|
// if `inner` modifier is enabled, we can't use the `flip` modifier
|
|
if (isModifierEnabled(data.instance.modifiers, 'inner')) {
|
|
return data;
|
|
}
|
|
|
|
if (data.flipped && data.placement === data.originalPlacement) {
|
|
// seems like flip is trying to loop, probably there's not enough space on any of the flippable sides
|
|
return data;
|
|
}
|
|
|
|
const boundaries = getBoundaries(data.instance.popper, data.instance.reference, options.padding, options.boundariesElement, data.positionFixed);
|
|
|
|
let placement = data.placement.split('-')[0];
|
|
let placementOpposite = getOppositePlacement(placement);
|
|
let variation = data.placement.split('-')[1] || '';
|
|
|
|
let flipOrder = [];
|
|
|
|
switch (options.behavior) {
|
|
case BEHAVIORS.FLIP:
|
|
flipOrder = [placement, placementOpposite];
|
|
break;
|
|
case BEHAVIORS.CLOCKWISE:
|
|
flipOrder = clockwise(placement);
|
|
break;
|
|
case BEHAVIORS.COUNTERCLOCKWISE:
|
|
flipOrder = clockwise(placement, true);
|
|
break;
|
|
default:
|
|
flipOrder = options.behavior;
|
|
}
|
|
|
|
flipOrder.forEach((step, index) => {
|
|
if (placement !== step || flipOrder.length === index + 1) {
|
|
return data;
|
|
}
|
|
|
|
placement = data.placement.split('-')[0];
|
|
placementOpposite = getOppositePlacement(placement);
|
|
|
|
const popperOffsets = data.offsets.popper;
|
|
const refOffsets = data.offsets.reference;
|
|
|
|
// using floor because the reference offsets may contain decimals we are not going to consider here
|
|
const floor = Math.floor;
|
|
const overlapsRef = placement === 'left' && floor(popperOffsets.right) > floor(refOffsets.left) || placement === 'right' && floor(popperOffsets.left) < floor(refOffsets.right) || placement === 'top' && floor(popperOffsets.bottom) > floor(refOffsets.top) || placement === 'bottom' && floor(popperOffsets.top) < floor(refOffsets.bottom);
|
|
|
|
const overflowsLeft = floor(popperOffsets.left) < floor(boundaries.left);
|
|
const overflowsRight = floor(popperOffsets.right) > floor(boundaries.right);
|
|
const overflowsTop = floor(popperOffsets.top) < floor(boundaries.top);
|
|
const overflowsBottom = floor(popperOffsets.bottom) > floor(boundaries.bottom);
|
|
|
|
const overflowsBoundaries = placement === 'left' && overflowsLeft || placement === 'right' && overflowsRight || placement === 'top' && overflowsTop || placement === 'bottom' && overflowsBottom;
|
|
|
|
// flip the variation if required
|
|
const isVertical = ['top', 'bottom'].indexOf(placement) !== -1;
|
|
|
|
// flips variation if reference element overflows boundaries
|
|
const flippedVariationByRef = !!options.flipVariations && (isVertical && variation === 'start' && overflowsLeft || isVertical && variation === 'end' && overflowsRight || !isVertical && variation === 'start' && overflowsTop || !isVertical && variation === 'end' && overflowsBottom);
|
|
|
|
// flips variation if popper content overflows boundaries
|
|
const flippedVariationByContent = !!options.flipVariationsByContent && (isVertical && variation === 'start' && overflowsRight || isVertical && variation === 'end' && overflowsLeft || !isVertical && variation === 'start' && overflowsBottom || !isVertical && variation === 'end' && overflowsTop);
|
|
|
|
const flippedVariation = flippedVariationByRef || flippedVariationByContent;
|
|
|
|
if (overlapsRef || overflowsBoundaries || flippedVariation) {
|
|
// this boolean to detect any flip loop
|
|
data.flipped = true;
|
|
|
|
if (overlapsRef || overflowsBoundaries) {
|
|
placement = flipOrder[index + 1];
|
|
}
|
|
|
|
if (flippedVariation) {
|
|
variation = getOppositeVariation(variation);
|
|
}
|
|
|
|
data.placement = placement + (variation ? '-' + variation : '');
|
|
|
|
// this object contains `position`, we want to preserve it along with
|
|
// any additional property we may add in the future
|
|
data.offsets.popper = _extends({}, data.offsets.popper, getPopperOffsets(data.instance.popper, data.offsets.reference, data.placement));
|
|
|
|
data = runModifiers(data.instance.modifiers, data, 'flip');
|
|
}
|
|
});
|
|
return data;
|
|
}
|
|
|
|
/**
|
|
* @function
|
|
* @memberof Modifiers
|
|
* @argument {Object} data - The data object generated by update method
|
|
* @argument {Object} options - Modifiers configuration and options
|
|
* @returns {Object} The data object, properly modified
|
|
*/
|
|
function keepTogether(data) {
|
|
const { popper, reference } = data.offsets;
|
|
const placement = data.placement.split('-')[0];
|
|
const floor = Math.floor;
|
|
const isVertical = ['top', 'bottom'].indexOf(placement) !== -1;
|
|
const side = isVertical ? 'right' : 'bottom';
|
|
const opSide = isVertical ? 'left' : 'top';
|
|
const measurement = isVertical ? 'width' : 'height';
|
|
|
|
if (popper[side] < floor(reference[opSide])) {
|
|
data.offsets.popper[opSide] = floor(reference[opSide]) - popper[measurement];
|
|
}
|
|
if (popper[opSide] > floor(reference[side])) {
|
|
data.offsets.popper[opSide] = floor(reference[side]);
|
|
}
|
|
|
|
return data;
|
|
}
|
|
|
|
/**
|
|
* Converts a string containing value + unit into a px value number
|
|
* @function
|
|
* @memberof {modifiers~offset}
|
|
* @private
|
|
* @argument {String} str - Value + unit string
|
|
* @argument {String} measurement - `height` or `width`
|
|
* @argument {Object} popperOffsets
|
|
* @argument {Object} referenceOffsets
|
|
* @returns {Number|String}
|
|
* Value in pixels, or original string if no values were extracted
|
|
*/
|
|
function toValue(str, measurement, popperOffsets, referenceOffsets) {
|
|
// separate value from unit
|
|
const split = str.match(/((?:\-|\+)?\d*\.?\d*)(.*)/);
|
|
const value = +split[1];
|
|
const unit = split[2];
|
|
|
|
// If it's not a number it's an operator, I guess
|
|
if (!value) {
|
|
return str;
|
|
}
|
|
|
|
if (unit.indexOf('%') === 0) {
|
|
let element;
|
|
switch (unit) {
|
|
case '%p':
|
|
element = popperOffsets;
|
|
break;
|
|
case '%':
|
|
case '%r':
|
|
default:
|
|
element = referenceOffsets;
|
|
}
|
|
|
|
const rect = getClientRect(element);
|
|
return rect[measurement] / 100 * value;
|
|
} else if (unit === 'vh' || unit === 'vw') {
|
|
// if is a vh or vw, we calculate the size based on the viewport
|
|
let size;
|
|
if (unit === 'vh') {
|
|
size = Math.max(document.documentElement.clientHeight, window.innerHeight || 0);
|
|
} else {
|
|
size = Math.max(document.documentElement.clientWidth, window.innerWidth || 0);
|
|
}
|
|
return size / 100 * value;
|
|
} else {
|
|
// if is an explicit pixel unit, we get rid of the unit and keep the value
|
|
// if is an implicit unit, it's px, and we return just the value
|
|
return value;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Parse an `offset` string to extrapolate `x` and `y` numeric offsets.
|
|
* @function
|
|
* @memberof {modifiers~offset}
|
|
* @private
|
|
* @argument {String} offset
|
|
* @argument {Object} popperOffsets
|
|
* @argument {Object} referenceOffsets
|
|
* @argument {String} basePlacement
|
|
* @returns {Array} a two cells array with x and y offsets in numbers
|
|
*/
|
|
function parseOffset(offset, popperOffsets, referenceOffsets, basePlacement) {
|
|
const offsets = [0, 0];
|
|
|
|
// Use height if placement is left or right and index is 0 otherwise use width
|
|
// in this way the first offset will use an axis and the second one
|
|
// will use the other one
|
|
const useHeight = ['right', 'left'].indexOf(basePlacement) !== -1;
|
|
|
|
// Split the offset string to obtain a list of values and operands
|
|
// The regex addresses values with the plus or minus sign in front (+10, -20, etc)
|
|
const fragments = offset.split(/(\+|\-)/).map(frag => frag.trim());
|
|
|
|
// Detect if the offset string contains a pair of values or a single one
|
|
// they could be separated by comma or space
|
|
const divider = fragments.indexOf(find(fragments, frag => frag.search(/,|\s/) !== -1));
|
|
|
|
if (fragments[divider] && fragments[divider].indexOf(',') === -1) {
|
|
console.warn('Offsets separated by white space(s) are deprecated, use a comma (,) instead.');
|
|
}
|
|
|
|
// If divider is found, we divide the list of values and operands to divide
|
|
// them by ofset X and Y.
|
|
const splitRegex = /\s*,\s*|\s+/;
|
|
let ops = divider !== -1 ? [fragments.slice(0, divider).concat([fragments[divider].split(splitRegex)[0]]), [fragments[divider].split(splitRegex)[1]].concat(fragments.slice(divider + 1))] : [fragments];
|
|
|
|
// Convert the values with units to absolute pixels to allow our computations
|
|
ops = ops.map((op, index) => {
|
|
// Most of the units rely on the orientation of the popper
|
|
const measurement = (index === 1 ? !useHeight : useHeight) ? 'height' : 'width';
|
|
let mergeWithPrevious = false;
|
|
return op
|
|
// This aggregates any `+` or `-` sign that aren't considered operators
|
|
// e.g.: 10 + +5 => [10, +, +5]
|
|
.reduce((a, b) => {
|
|
if (a[a.length - 1] === '' && ['+', '-'].indexOf(b) !== -1) {
|
|
a[a.length - 1] = b;
|
|
mergeWithPrevious = true;
|
|
return a;
|
|
} else if (mergeWithPrevious) {
|
|
a[a.length - 1] += b;
|
|
mergeWithPrevious = false;
|
|
return a;
|
|
} else {
|
|
return a.concat(b);
|
|
}
|
|
}, [])
|
|
// Here we convert the string values into number values (in px)
|
|
.map(str => toValue(str, measurement, popperOffsets, referenceOffsets));
|
|
});
|
|
|
|
// Loop trough the offsets arrays and execute the operations
|
|
ops.forEach((op, index) => {
|
|
op.forEach((frag, index2) => {
|
|
if (isNumeric(frag)) {
|
|
offsets[index] += frag * (op[index2 - 1] === '-' ? -1 : 1);
|
|
}
|
|
});
|
|
});
|
|
return offsets;
|
|
}
|
|
|
|
/**
|
|
* @function
|
|
* @memberof Modifiers
|
|
* @argument {Object} data - The data object generated by update method
|
|
* @argument {Object} options - Modifiers configuration and options
|
|
* @argument {Number|String} options.offset=0
|
|
* The offset value as described in the modifier description
|
|
* @returns {Object} The data object, properly modified
|
|
*/
|
|
function offset(data, { offset }) {
|
|
const { placement, offsets: { popper, reference } } = data;
|
|
const basePlacement = placement.split('-')[0];
|
|
|
|
let offsets;
|
|
if (isNumeric(+offset)) {
|
|
offsets = [+offset, 0];
|
|
} else {
|
|
offsets = parseOffset(offset, popper, reference, basePlacement);
|
|
}
|
|
|
|
if (basePlacement === 'left') {
|
|
popper.top += offsets[0];
|
|
popper.left -= offsets[1];
|
|
} else if (basePlacement === 'right') {
|
|
popper.top += offsets[0];
|
|
popper.left += offsets[1];
|
|
} else if (basePlacement === 'top') {
|
|
popper.left += offsets[0];
|
|
popper.top -= offsets[1];
|
|
} else if (basePlacement === 'bottom') {
|
|
popper.left += offsets[0];
|
|
popper.top += offsets[1];
|
|
}
|
|
|
|
data.popper = popper;
|
|
return data;
|
|
}
|
|
|
|
/**
|
|
* @function
|
|
* @memberof Modifiers
|
|
* @argument {Object} data - The data object generated by `update` method
|
|
* @argument {Object} options - Modifiers configuration and options
|
|
* @returns {Object} The data object, properly modified
|
|
*/
|
|
function preventOverflow(data, options) {
|
|
let boundariesElement = options.boundariesElement || getOffsetParent(data.instance.popper);
|
|
|
|
// If offsetParent is the reference element, we really want to
|
|
// go one step up and use the next offsetParent as reference to
|
|
// avoid to make this modifier completely useless and look like broken
|
|
if (data.instance.reference === boundariesElement) {
|
|
boundariesElement = getOffsetParent(boundariesElement);
|
|
}
|
|
|
|
// NOTE: DOM access here
|
|
// resets the popper's position so that the document size can be calculated excluding
|
|
// the size of the popper element itself
|
|
const transformProp = getSupportedPropertyName('transform');
|
|
const popperStyles = data.instance.popper.style; // assignment to help minification
|
|
const { top, left, [transformProp]: transform } = popperStyles;
|
|
popperStyles.top = '';
|
|
popperStyles.left = '';
|
|
popperStyles[transformProp] = '';
|
|
|
|
const boundaries = getBoundaries(data.instance.popper, data.instance.reference, options.padding, boundariesElement, data.positionFixed);
|
|
|
|
// NOTE: DOM access here
|
|
// restores the original style properties after the offsets have been computed
|
|
popperStyles.top = top;
|
|
popperStyles.left = left;
|
|
popperStyles[transformProp] = transform;
|
|
|
|
options.boundaries = boundaries;
|
|
|
|
const order = options.priority;
|
|
let popper = data.offsets.popper;
|
|
|
|
const check = {
|
|
primary(placement) {
|
|
let value = popper[placement];
|
|
if (popper[placement] < boundaries[placement] && !options.escapeWithReference) {
|
|
value = Math.max(popper[placement], boundaries[placement]);
|
|
}
|
|
return { [placement]: value };
|
|
},
|
|
secondary(placement) {
|
|
const mainSide = placement === 'right' ? 'left' : 'top';
|
|
let value = popper[mainSide];
|
|
if (popper[placement] > boundaries[placement] && !options.escapeWithReference) {
|
|
value = Math.min(popper[mainSide], boundaries[placement] - (placement === 'right' ? popper.width : popper.height));
|
|
}
|
|
return { [mainSide]: value };
|
|
}
|
|
};
|
|
|
|
order.forEach(placement => {
|
|
const side = ['left', 'top'].indexOf(placement) !== -1 ? 'primary' : 'secondary';
|
|
popper = _extends({}, popper, check[side](placement));
|
|
});
|
|
|
|
data.offsets.popper = popper;
|
|
|
|
return data;
|
|
}
|
|
|
|
/**
|
|
* @function
|
|
* @memberof Modifiers
|
|
* @argument {Object} data - The data object generated by `update` method
|
|
* @argument {Object} options - Modifiers configuration and options
|
|
* @returns {Object} The data object, properly modified
|
|
*/
|
|
function shift(data) {
|
|
const placement = data.placement;
|
|
const basePlacement = placement.split('-')[0];
|
|
const shiftvariation = placement.split('-')[1];
|
|
|
|
// if shift shiftvariation is specified, run the modifier
|
|
if (shiftvariation) {
|
|
const { reference, popper } = data.offsets;
|
|
const isVertical = ['bottom', 'top'].indexOf(basePlacement) !== -1;
|
|
const side = isVertical ? 'left' : 'top';
|
|
const measurement = isVertical ? 'width' : 'height';
|
|
|
|
const shiftOffsets = {
|
|
start: { [side]: reference[side] },
|
|
end: {
|
|
[side]: reference[side] + reference[measurement] - popper[measurement]
|
|
}
|
|
};
|
|
|
|
data.offsets.popper = _extends({}, popper, shiftOffsets[shiftvariation]);
|
|
}
|
|
|
|
return data;
|
|
}
|
|
|
|
/**
|
|
* @function
|
|
* @memberof Modifiers
|
|
* @argument {Object} data - The data object generated by update method
|
|
* @argument {Object} options - Modifiers configuration and options
|
|
* @returns {Object} The data object, properly modified
|
|
*/
|
|
function hide(data) {
|
|
if (!isModifierRequired(data.instance.modifiers, 'hide', 'preventOverflow')) {
|
|
return data;
|
|
}
|
|
|
|
const refRect = data.offsets.reference;
|
|
const bound = find(data.instance.modifiers, modifier => modifier.name === 'preventOverflow').boundaries;
|
|
|
|
if (refRect.bottom < bound.top || refRect.left > bound.right || refRect.top > bound.bottom || refRect.right < bound.left) {
|
|
// Avoid unnecessary DOM access if visibility hasn't changed
|
|
if (data.hide === true) {
|
|
return data;
|
|
}
|
|
|
|
data.hide = true;
|
|
data.attributes['x-out-of-boundaries'] = '';
|
|
} else {
|
|
// Avoid unnecessary DOM access if visibility hasn't changed
|
|
if (data.hide === false) {
|
|
return data;
|
|
}
|
|
|
|
data.hide = false;
|
|
data.attributes['x-out-of-boundaries'] = false;
|
|
}
|
|
|
|
return data;
|
|
}
|
|
|
|
/**
|
|
* @function
|
|
* @memberof Modifiers
|
|
* @argument {Object} data - The data object generated by `update` method
|
|
* @argument {Object} options - Modifiers configuration and options
|
|
* @returns {Object} The data object, properly modified
|
|
*/
|
|
function inner(data) {
|
|
const placement = data.placement;
|
|
const basePlacement = placement.split('-')[0];
|
|
const { popper, reference } = data.offsets;
|
|
const isHoriz = ['left', 'right'].indexOf(basePlacement) !== -1;
|
|
|
|
const subtractLength = ['top', 'left'].indexOf(basePlacement) === -1;
|
|
|
|
popper[isHoriz ? 'left' : 'top'] = reference[basePlacement] - (subtractLength ? popper[isHoriz ? 'width' : 'height'] : 0);
|
|
|
|
data.placement = getOppositePlacement(placement);
|
|
data.offsets.popper = getClientRect(popper);
|
|
|
|
return data;
|
|
}
|
|
|
|
/**
|
|
* Modifier function, each modifier can have a function of this type assigned
|
|
* to its `fn` property.<br />
|
|
* These functions will be called on each update, this means that you must
|
|
* make sure they are performant enough to avoid performance bottlenecks.
|
|
*
|
|
* @function ModifierFn
|
|
* @argument {dataObject} data - The data object generated by `update` method
|
|
* @argument {Object} options - Modifiers configuration and options
|
|
* @returns {dataObject} The data object, properly modified
|
|
*/
|
|
|
|
/**
|
|
* Modifiers are plugins used to alter the behavior of your poppers.<br />
|
|
* Popper.js uses a set of 9 modifiers to provide all the basic functionalities
|
|
* needed by the library.
|
|
*
|
|
* Usually you don't want to override the `order`, `fn` and `onLoad` props.
|
|
* All the other properties are configurations that could be tweaked.
|
|
* @namespace modifiers
|
|
*/
|
|
var modifiers = {
|
|
/**
|
|
* Modifier used to shift the popper on the start or end of its reference
|
|
* element.<br />
|
|
* It will read the variation of the `placement` property.<br />
|
|
* It can be one either `-end` or `-start`.
|
|
* @memberof modifiers
|
|
* @inner
|
|
*/
|
|
shift: {
|
|
/** @prop {number} order=100 - Index used to define the order of execution */
|
|
order: 100,
|
|
/** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */
|
|
enabled: true,
|
|
/** @prop {ModifierFn} */
|
|
fn: shift
|
|
},
|
|
|
|
/**
|
|
* The `offset` modifier can shift your popper on both its axis.
|
|
*
|
|
* It accepts the following units:
|
|
* - `px` or unit-less, interpreted as pixels
|
|
* - `%` or `%r`, percentage relative to the length of the reference element
|
|
* - `%p`, percentage relative to the length of the popper element
|
|
* - `vw`, CSS viewport width unit
|
|
* - `vh`, CSS viewport height unit
|
|
*
|
|
* For length is intended the main axis relative to the placement of the popper.<br />
|
|
* This means that if the placement is `top` or `bottom`, the length will be the
|
|
* `width`. In case of `left` or `right`, it will be the `height`.
|
|
*
|
|
* You can provide a single value (as `Number` or `String`), or a pair of values
|
|
* as `String` divided by a comma or one (or more) white spaces.<br />
|
|
* The latter is a deprecated method because it leads to confusion and will be
|
|
* removed in v2.<br />
|
|
* Additionally, it accepts additions and subtractions between different units.
|
|
* Note that multiplications and divisions aren't supported.
|
|
*
|
|
* Valid examples are:
|
|
* ```
|
|
* 10
|
|
* '10%'
|
|
* '10, 10'
|
|
* '10%, 10'
|
|
* '10 + 10%'
|
|
* '10 - 5vh + 3%'
|
|
* '-10px + 5vh, 5px - 6%'
|
|
* ```
|
|
* > **NB**: If you desire to apply offsets to your poppers in a way that may make them overlap
|
|
* > with their reference element, unfortunately, you will have to disable the `flip` modifier.
|
|
* > You can read more on this at this [issue](https://github.com/FezVrasta/popper.js/issues/373).
|
|
*
|
|
* @memberof modifiers
|
|
* @inner
|
|
*/
|
|
offset: {
|
|
/** @prop {number} order=200 - Index used to define the order of execution */
|
|
order: 200,
|
|
/** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */
|
|
enabled: true,
|
|
/** @prop {ModifierFn} */
|
|
fn: offset,
|
|
/** @prop {Number|String} offset=0
|
|
* The offset value as described in the modifier description
|
|
*/
|
|
offset: 0
|
|
},
|
|
|
|
/**
|
|
* Modifier used to prevent the popper from being positioned outside the boundary.
|
|
*
|
|
* A scenario exists where the reference itself is not within the boundaries.<br />
|
|
* We can say it has "escaped the boundaries" — or just "escaped".<br />
|
|
* In this case we need to decide whether the popper should either:
|
|
*
|
|
* - detach from the reference and remain "trapped" in the boundaries, or
|
|
* - if it should ignore the boundary and "escape with its reference"
|
|
*
|
|
* When `escapeWithReference` is set to`true` and reference is completely
|
|
* outside its boundaries, the popper will overflow (or completely leave)
|
|
* the boundaries in order to remain attached to the edge of the reference.
|
|
*
|
|
* @memberof modifiers
|
|
* @inner
|
|
*/
|
|
preventOverflow: {
|
|
/** @prop {number} order=300 - Index used to define the order of execution */
|
|
order: 300,
|
|
/** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */
|
|
enabled: true,
|
|
/** @prop {ModifierFn} */
|
|
fn: preventOverflow,
|
|
/**
|
|
* @prop {Array} [priority=['left','right','top','bottom']]
|
|
* Popper will try to prevent overflow following these priorities by default,
|
|
* then, it could overflow on the left and on top of the `boundariesElement`
|
|
*/
|
|
priority: ['left', 'right', 'top', 'bottom'],
|
|
/**
|
|
* @prop {number} padding=5
|
|
* Amount of pixel used to define a minimum distance between the boundaries
|
|
* and the popper. This makes sure the popper always has a little padding
|
|
* between the edges of its container
|
|
*/
|
|
padding: 5,
|
|
/**
|
|
* @prop {String|HTMLElement} boundariesElement='scrollParent'
|
|
* Boundaries used by the modifier. Can be `scrollParent`, `window`,
|
|
* `viewport` or any DOM element.
|
|
*/
|
|
boundariesElement: 'scrollParent'
|
|
},
|
|
|
|
/**
|
|
* Modifier used to make sure the reference and its popper stay near each other
|
|
* without leaving any gap between the two. Especially useful when the arrow is
|
|
* enabled and you want to ensure that it points to its reference element.
|
|
* It cares only about the first axis. You can still have poppers with margin
|
|
* between the popper and its reference element.
|
|
* @memberof modifiers
|
|
* @inner
|
|
*/
|
|
keepTogether: {
|
|
/** @prop {number} order=400 - Index used to define the order of execution */
|
|
order: 400,
|
|
/** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */
|
|
enabled: true,
|
|
/** @prop {ModifierFn} */
|
|
fn: keepTogether
|
|
},
|
|
|
|
/**
|
|
* This modifier is used to move the `arrowElement` of the popper to make
|
|
* sure it is positioned between the reference element and its popper element.
|
|
* It will read the outer size of the `arrowElement` node to detect how many
|
|
* pixels of conjunction are needed.
|
|
*
|
|
* It has no effect if no `arrowElement` is provided.
|
|
* @memberof modifiers
|
|
* @inner
|
|
*/
|
|
arrow: {
|
|
/** @prop {number} order=500 - Index used to define the order of execution */
|
|
order: 500,
|
|
/** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */
|
|
enabled: true,
|
|
/** @prop {ModifierFn} */
|
|
fn: arrow,
|
|
/** @prop {String|HTMLElement} element='[x-arrow]' - Selector or node used as arrow */
|
|
element: '[x-arrow]'
|
|
},
|
|
|
|
/**
|
|
* Modifier used to flip the popper's placement when it starts to overlap its
|
|
* reference element.
|
|
*
|
|
* Requires the `preventOverflow` modifier before it in order to work.
|
|
*
|
|
* **NOTE:** this modifier will interrupt the current update cycle and will
|
|
* restart it if it detects the need to flip the placement.
|
|
* @memberof modifiers
|
|
* @inner
|
|
*/
|
|
flip: {
|
|
/** @prop {number} order=600 - Index used to define the order of execution */
|
|
order: 600,
|
|
/** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */
|
|
enabled: true,
|
|
/** @prop {ModifierFn} */
|
|
fn: flip,
|
|
/**
|
|
* @prop {String|Array} behavior='flip'
|
|
* The behavior used to change the popper's placement. It can be one of
|
|
* `flip`, `clockwise`, `counterclockwise` or an array with a list of valid
|
|
* placements (with optional variations)
|
|
*/
|
|
behavior: 'flip',
|
|
/**
|
|
* @prop {number} padding=5
|
|
* The popper will flip if it hits the edges of the `boundariesElement`
|
|
*/
|
|
padding: 5,
|
|
/**
|
|
* @prop {String|HTMLElement} boundariesElement='viewport'
|
|
* The element which will define the boundaries of the popper position.
|
|
* The popper will never be placed outside of the defined boundaries
|
|
* (except if `keepTogether` is enabled)
|
|
*/
|
|
boundariesElement: 'viewport',
|
|
/**
|
|
* @prop {Boolean} flipVariations=false
|
|
* The popper will switch placement variation between `-start` and `-end` when
|
|
* the reference element overlaps its boundaries.
|
|
*
|
|
* The original placement should have a set variation.
|
|
*/
|
|
flipVariations: false,
|
|
/**
|
|
* @prop {Boolean} flipVariationsByContent=false
|
|
* The popper will switch placement variation between `-start` and `-end` when
|
|
* the popper element overlaps its reference boundaries.
|
|
*
|
|
* The original placement should have a set variation.
|
|
*/
|
|
flipVariationsByContent: false
|
|
},
|
|
|
|
/**
|
|
* Modifier used to make the popper flow toward the inner of the reference element.
|
|
* By default, when this modifier is disabled, the popper will be placed outside
|
|
* the reference element.
|
|
* @memberof modifiers
|
|
* @inner
|
|
*/
|
|
inner: {
|
|
/** @prop {number} order=700 - Index used to define the order of execution */
|
|
order: 700,
|
|
/** @prop {Boolean} enabled=false - Whether the modifier is enabled or not */
|
|
enabled: false,
|
|
/** @prop {ModifierFn} */
|
|
fn: inner
|
|
},
|
|
|
|
/**
|
|
* Modifier used to hide the popper when its reference element is outside of the
|
|
* popper boundaries. It will set a `x-out-of-boundaries` attribute which can
|
|
* be used to hide with a CSS selector the popper when its reference is
|
|
* out of boundaries.
|
|
*
|
|
* Requires the `preventOverflow` modifier before it in order to work.
|
|
* @memberof modifiers
|
|
* @inner
|
|
*/
|
|
hide: {
|
|
/** @prop {number} order=800 - Index used to define the order of execution */
|
|
order: 800,
|
|
/** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */
|
|
enabled: true,
|
|
/** @prop {ModifierFn} */
|
|
fn: hide
|
|
},
|
|
|
|
/**
|
|
* Computes the style that will be applied to the popper element to gets
|
|
* properly positioned.
|
|
*
|
|
* Note that this modifier will not touch the DOM, it just prepares the styles
|
|
* so that `applyStyle` modifier can apply it. This separation is useful
|
|
* in case you need to replace `applyStyle` with a custom implementation.
|
|
*
|
|
* This modifier has `850` as `order` value to maintain backward compatibility
|
|
* with previous versions of Popper.js. Expect the modifiers ordering method
|
|
* to change in future major versions of the library.
|
|
*
|
|
* @memberof modifiers
|
|
* @inner
|
|
*/
|
|
computeStyle: {
|
|
/** @prop {number} order=850 - Index used to define the order of execution */
|
|
order: 850,
|
|
/** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */
|
|
enabled: true,
|
|
/** @prop {ModifierFn} */
|
|
fn: computeStyle,
|
|
/**
|
|
* @prop {Boolean} gpuAcceleration=true
|
|
* If true, it uses the CSS 3D transformation to position the popper.
|
|
* Otherwise, it will use the `top` and `left` properties
|
|
*/
|
|
gpuAcceleration: true,
|
|
/**
|
|
* @prop {string} [x='bottom']
|
|
* Where to anchor the X axis (`bottom` or `top`). AKA X offset origin.
|
|
* Change this if your popper should grow in a direction different from `bottom`
|
|
*/
|
|
x: 'bottom',
|
|
/**
|
|
* @prop {string} [x='left']
|
|
* Where to anchor the Y axis (`left` or `right`). AKA Y offset origin.
|
|
* Change this if your popper should grow in a direction different from `right`
|
|
*/
|
|
y: 'right'
|
|
},
|
|
|
|
/**
|
|
* Applies the computed styles to the popper element.
|
|
*
|
|
* All the DOM manipulations are limited to this modifier. This is useful in case
|
|
* you want to integrate Popper.js inside a framework or view library and you
|
|
* want to delegate all the DOM manipulations to it.
|
|
*
|
|
* Note that if you disable this modifier, you must make sure the popper element
|
|
* has its position set to `absolute` before Popper.js can do its work!
|
|
*
|
|
* Just disable this modifier and define your own to achieve the desired effect.
|
|
*
|
|
* @memberof modifiers
|
|
* @inner
|
|
*/
|
|
applyStyle: {
|
|
/** @prop {number} order=900 - Index used to define the order of execution */
|
|
order: 900,
|
|
/** @prop {Boolean} enabled=true - Whether the modifier is enabled or not */
|
|
enabled: true,
|
|
/** @prop {ModifierFn} */
|
|
fn: applyStyle,
|
|
/** @prop {Function} */
|
|
onLoad: applyStyleOnLoad,
|
|
/**
|
|
* @deprecated since version 1.10.0, the property moved to `computeStyle` modifier
|
|
* @prop {Boolean} gpuAcceleration=true
|
|
* If true, it uses the CSS 3D transformation to position the popper.
|
|
* Otherwise, it will use the `top` and `left` properties
|
|
*/
|
|
gpuAcceleration: undefined
|
|
}
|
|
};
|
|
|
|
/**
|
|
* The `dataObject` is an object containing all the information used by Popper.js.
|
|
* This object is passed to modifiers and to the `onCreate` and `onUpdate` callbacks.
|
|
* @name dataObject
|
|
* @property {Object} data.instance The Popper.js instance
|
|
* @property {String} data.placement Placement applied to popper
|
|
* @property {String} data.originalPlacement Placement originally defined on init
|
|
* @property {Boolean} data.flipped True if popper has been flipped by flip modifier
|
|
* @property {Boolean} data.hide True if the reference element is out of boundaries, useful to know when to hide the popper
|
|
* @property {HTMLElement} data.arrowElement Node used as arrow by arrow modifier
|
|
* @property {Object} data.styles Any CSS property defined here will be applied to the popper. It expects the JavaScript nomenclature (eg. `marginBottom`)
|
|
* @property {Object} data.arrowStyles Any CSS property defined here will be applied to the popper arrow. It expects the JavaScript nomenclature (eg. `marginBottom`)
|
|
* @property {Object} data.boundaries Offsets of the popper boundaries
|
|
* @property {Object} data.offsets The measurements of popper, reference and arrow elements
|
|
* @property {Object} data.offsets.popper `top`, `left`, `width`, `height` values
|
|
* @property {Object} data.offsets.reference `top`, `left`, `width`, `height` values
|
|
* @property {Object} data.offsets.arrow] `top` and `left` offsets, only one of them will be different from 0
|
|
*/
|
|
|
|
/**
|
|
* Default options provided to Popper.js constructor.<br />
|
|
* These can be overridden using the `options` argument of Popper.js.<br />
|
|
* To override an option, simply pass an object with the same
|
|
* structure of the `options` object, as the 3rd argument. For example:
|
|
* ```
|
|
* new Popper(ref, pop, {
|
|
* modifiers: {
|
|
* preventOverflow: { enabled: false }
|
|
* }
|
|
* })
|
|
* ```
|
|
* @type {Object}
|
|
* @static
|
|
* @memberof Popper
|
|
*/
|
|
var Defaults = {
|
|
/**
|
|
* Popper's placement.
|
|
* @prop {Popper.placements} placement='bottom'
|
|
*/
|
|
placement: 'bottom',
|
|
|
|
/**
|
|
* Set this to true if you want popper to position it self in 'fixed' mode
|
|
* @prop {Boolean} positionFixed=false
|
|
*/
|
|
positionFixed: false,
|
|
|
|
/**
|
|
* Whether events (resize, scroll) are initially enabled.
|
|
* @prop {Boolean} eventsEnabled=true
|
|
*/
|
|
eventsEnabled: true,
|
|
|
|
/**
|
|
* Set to true if you want to automatically remove the popper when
|
|
* you call the `destroy` method.
|
|
* @prop {Boolean} removeOnDestroy=false
|
|
*/
|
|
removeOnDestroy: false,
|
|
|
|
/**
|
|
* Callback called when the popper is created.<br />
|
|
* By default, it is set to no-op.<br />
|
|
* Access Popper.js instance with `data.instance`.
|
|
* @prop {onCreate}
|
|
*/
|
|
onCreate: () => {},
|
|
|
|
/**
|
|
* Callback called when the popper is updated. This callback is not called
|
|
* on the initialization/creation of the popper, but only on subsequent
|
|
* updates.<br />
|
|
* By default, it is set to no-op.<br />
|
|
* Access Popper.js instance with `data.instance`.
|
|
* @prop {onUpdate}
|
|
*/
|
|
onUpdate: () => {},
|
|
|
|
/**
|
|
* List of modifiers used to modify the offsets before they are applied to the popper.
|
|
* They provide most of the functionalities of Popper.js.
|
|
* @prop {modifiers}
|
|
*/
|
|
modifiers
|
|
};
|
|
|
|
/**
|
|
* @callback onCreate
|
|
* @param {dataObject} data
|
|
*/
|
|
|
|
/**
|
|
* @callback onUpdate
|
|
* @param {dataObject} data
|
|
*/
|
|
|
|
// Utils
|
|
// Methods
|
|
class Popper {
|
|
/**
|
|
* Creates a new Popper.js instance.
|
|
* @class Popper
|
|
* @param {Element|referenceObject} reference - The reference element used to position the popper
|
|
* @param {Element} popper - The HTML / XML element used as the popper
|
|
* @param {Object} options - Your custom options to override the ones defined in [Defaults](#defaults)
|
|
* @return {Object} instance - The generated Popper.js instance
|
|
*/
|
|
constructor(reference, popper, options = {}) {
|
|
this.scheduleUpdate = () => requestAnimationFrame(this.update);
|
|
|
|
// make update() debounced, so that it only runs at most once-per-tick
|
|
this.update = debounce(this.update.bind(this));
|
|
|
|
// with {} we create a new object with the options inside it
|
|
this.options = _extends({}, Popper.Defaults, options);
|
|
|
|
// init state
|
|
this.state = {
|
|
isDestroyed: false,
|
|
isCreated: false,
|
|
scrollParents: []
|
|
};
|
|
|
|
// get reference and popper elements (allow jQuery wrappers)
|
|
this.reference = reference && reference.jquery ? reference[0] : reference;
|
|
this.popper = popper && popper.jquery ? popper[0] : popper;
|
|
|
|
// Deep merge modifiers options
|
|
this.options.modifiers = {};
|
|
Object.keys(_extends({}, Popper.Defaults.modifiers, options.modifiers)).forEach(name => {
|
|
this.options.modifiers[name] = _extends({}, Popper.Defaults.modifiers[name] || {}, options.modifiers ? options.modifiers[name] : {});
|
|
});
|
|
|
|
// Refactoring modifiers' list (Object => Array)
|
|
this.modifiers = Object.keys(this.options.modifiers).map(name => _extends({
|
|
name
|
|
}, this.options.modifiers[name]))
|
|
// sort the modifiers by order
|
|
.sort((a, b) => a.order - b.order);
|
|
|
|
// modifiers have the ability to execute arbitrary code when Popper.js get inited
|
|
// such code is executed in the same order of its modifier
|
|
// they could add new properties to their options configuration
|
|
// BE AWARE: don't add options to `options.modifiers.name` but to `modifierOptions`!
|
|
this.modifiers.forEach(modifierOptions => {
|
|
if (modifierOptions.enabled && isFunction(modifierOptions.onLoad)) {
|
|
modifierOptions.onLoad(this.reference, this.popper, this.options, modifierOptions, this.state);
|
|
}
|
|
});
|
|
|
|
// fire the first update to position the popper in the right place
|
|
this.update();
|
|
|
|
const eventsEnabled = this.options.eventsEnabled;
|
|
if (eventsEnabled) {
|
|
// setup event listeners, they will take care of update the position in specific situations
|
|
this.enableEventListeners();
|
|
}
|
|
|
|
this.state.eventsEnabled = eventsEnabled;
|
|
}
|
|
|
|
// We can't use class properties because they don't get listed in the
|
|
// class prototype and break stuff like Sinon stubs
|
|
update() {
|
|
return update.call(this);
|
|
}
|
|
destroy() {
|
|
return destroy.call(this);
|
|
}
|
|
enableEventListeners() {
|
|
return enableEventListeners.call(this);
|
|
}
|
|
disableEventListeners() {
|
|
return disableEventListeners.call(this);
|
|
}
|
|
|
|
/**
|
|
* Schedules an update. It will run on the next UI update available.
|
|
* @method scheduleUpdate
|
|
* @memberof Popper
|
|
*/
|
|
|
|
|
|
/**
|
|
* Collection of utilities useful when writing custom modifiers.
|
|
* Starting from version 1.7, this method is available only if you
|
|
* include `popper-utils.js` before `popper.js`.
|
|
*
|
|
* **DEPRECATION**: This way to access PopperUtils is deprecated
|
|
* and will be removed in v2! Use the PopperUtils module directly instead.
|
|
* Due to the high instability of the methods contained in Utils, we can't
|
|
* guarantee them to follow semver. Use them at your own risk!
|
|
* @static
|
|
* @private
|
|
* @type {Object}
|
|
* @deprecated since version 1.8
|
|
* @member Utils
|
|
* @memberof Popper
|
|
*/
|
|
}
|
|
|
|
/**
|
|
* The `referenceObject` is an object that provides an interface compatible with Popper.js
|
|
* and lets you use it as replacement of a real DOM node.<br />
|
|
* You can use this method to position a popper relatively to a set of coordinates
|
|
* in case you don't have a DOM node to use as reference.
|
|
*
|
|
* ```
|
|
* new Popper(referenceObject, popperNode);
|
|
* ```
|
|
*
|
|
* NB: This feature isn't supported in Internet Explorer 10.
|
|
* @name referenceObject
|
|
* @property {Function} data.getBoundingClientRect
|
|
* A function that returns a set of coordinates compatible with the native `getBoundingClientRect` method.
|
|
* @property {number} data.clientWidth
|
|
* An ES6 getter that will return the width of the virtual reference element.
|
|
* @property {number} data.clientHeight
|
|
* An ES6 getter that will return the height of the virtual reference element.
|
|
*/
|
|
|
|
Popper.Utils = (typeof window !== 'undefined' ? window : global).PopperUtils;
|
|
Popper.placements = placements;
|
|
Popper.Defaults = Defaults;
|
|
|
|
export default Popper;
|
|
//# sourceMappingURL=popper.js.map
|