haproxy-wi/inc/nprogress.js

/* NProgress, (c) 2013, 2014 Rico Sta. Cruz - http://ricostacruz.com/nprogress
 * @license MIT */
;(function(root, factory) {
  if (typeof define === 'function' && define.amd) {
    define(factory);
  } else if (typeof exports === 'object') {
    module.exports = factory();
  } else {
    root.NProgress = factory();
  }
})(this, function() {
  var NProgress = {};
  NProgress.version = '0.2.0';
  var Settings = NProgress.settings = {
    minimum: 0.08,
    easing: 'linear',
    positionUsing: '',
    speed: 200,
    trickle: true,
    trickleSpeed: 200,
    showSpinner: true,
    barSelector: '[role="bar"]',
    spinnerSelector: '[role="spinner"]',
    parent: 'body',
    template: '<div class="bar" role="bar"><div class="peg"></div></div><div class="spinner" role="spinner"><div class="spinner-icon"></div></div>'
  };
  NProgress.configure = function(options) {
    var key, value;
    for (key in options) {
      value = options[key];
      if (value !== undefined && options.hasOwnProperty(key)) Settings[key] = value;
    }

    return this;
  };
  NProgress.status = null;
  NProgress.set = function(n) {
    var started = NProgress.isStarted();

    n = clamp(n, Settings.minimum, 1);
    NProgress.status = (n === 1 ? null : n);

    var progress = NProgress.render(!started),
        bar      = progress.querySelector(Settings.barSelector),
        speed    = Settings.speed,
        ease     = Settings.easing;
    progress.offsetWidth;
    queue(function(next) {
      if (Settings.positionUsing === '') Settings.positionUsing = NProgress.getPositioningCSS();
      css(bar, barPositionCSS(n, speed, ease));
      if (n === 1) {
        css(progress, {
          transition: 'none',
          opacity: 1
        });
        progress.offsetWidth; 
        setTimeout(function() {
          css(progress, {
            transition: 'all ' + speed + 'ms linear',
            opacity: 0
          });
          setTimeout(function() {
            NProgress.remove();
            next();
          }, speed);
        }, speed);
      } else {
        setTimeout(next, speed);
      }
    });
    return this;
  };
  NProgress.isStarted = function() {
    return typeof NProgress.status === 'number';
  };
  NProgress.start = function() {
    if (!NProgress.status) NProgress.set(0);
    var work = function() {
      setTimeout(function() {
        if (!NProgress.status) return;
        NProgress.trickle();
        work();
      }, Settings.trickleSpeed);
    };
    if (Settings.trickle) work();
    return this;
  };
  NProgress.done = function(force) {
    if (!force && !NProgress.status) return this;
    return NProgress.inc(0.3 + 0.5 * Math.random()).set(1);
  };
  NProgress.inc = function(amount) {
    var n = NProgress.status;
    if (!n) {
      return NProgress.start();
    } else if(n > 1) {
      return;
    } else {
      if (typeof amount !== 'number') {
        if (n >= 0 && n < 0.2) { amount = 0.1; }
        else if (n >= 0.2 && n < 0.5) { amount = 0.04; }
        else if (n >= 0.5 && n < 0.8) { amount = 0.02; }
        else if (n >= 0.8 && n < 0.99) { amount = 0.005; }
        else { amount = 0; }
      }
      n = clamp(n + amount, 0, 0.994);
      return NProgress.set(n);
    }
  };
  NProgress.trickle = function() {
    return NProgress.inc();
  };
  (function() {
    var initial = 0, current = 0;
    NProgress.promise = function($promise) {
      if (!$promise || $promise.state() === "resolved") {
        return this;
      }
      if (current === 0) {
        NProgress.start();
      }
      initial++;
      current++;
      $promise.always(function() {
        current--;
        if (current === 0) {
            initial = 0;
            NProgress.done();
        } else {
            NProgress.set((initial - current) / initial);
        }
      });
      return this;
    };

  })();
  NProgress.render = function(fromStart) {
    if (NProgress.isRendered()) return document.getElementById('nprogress');
    addClass(document.documentElement, 'nprogress-busy');
    var progress = document.createElement('div');
    progress.id = 'nprogress';
    progress.innerHTML = Settings.template;
    var bar      = progress.querySelector(Settings.barSelector),
        perc     = fromStart ? '-100' : toBarPerc(NProgress.status || 0),
        parent   = document.querySelector(Settings.parent),
        spinner;
    css(bar, {
      transition: 'all 0 linear',
      transform: 'translate3d(' + perc + '%,0,0)'
    });
    if (!Settings.showSpinner) {
      spinner = progress.querySelector(Settings.spinnerSelector);
      spinner && removeElement(spinner);
    }
    if (parent != document.body) {
      addClass(parent, 'nprogress-custom-parent');
    }
    parent.appendChild(progress);
    return progress;
  };
  NProgress.remove = function() {
    removeClass(document.documentElement, 'nprogress-busy');
    removeClass(document.querySelector(Settings.parent), 'nprogress-custom-parent');
    var progress = document.getElementById('nprogress');
    progress && removeElement(progress);
  };
  NProgress.isRendered = function() {
    return !!document.getElementById('nprogress');
  };
  NProgress.getPositioningCSS = function() {
    var bodyStyle = document.body.style;
    var vendorPrefix = ('WebkitTransform' in bodyStyle) ? 'Webkit' :
                       ('MozTransform' in bodyStyle) ? 'Moz' :
                       ('msTransform' in bodyStyle) ? 'ms' :
                       ('OTransform' in bodyStyle) ? 'O' : '';
    if (vendorPrefix + 'Perspective' in bodyStyle) {
      return 'translate3d';
    } else if (vendorPrefix + 'Transform' in bodyStyle) {
      return 'translate';
    } else {
      return 'margin';
    }
  };
  function clamp(n, min, max) {
    if (n < min) return min;
    if (n > max) return max;
    return n;
  }
  function toBarPerc(n) {
    return (-1 + n) * 100;
  }
  function barPositionCSS(n, speed, ease) {
    var barCSS;
    if (Settings.positionUsing === 'translate3d') {
      barCSS = { transform: 'translate3d('+toBarPerc(n)+'%,0,0)' };
    } else if (Settings.positionUsing === 'translate') {
      barCSS = { transform: 'translate('+toBarPerc(n)+'%,0)' };
    } else {
      barCSS = { 'margin-left': toBarPerc(n)+'%' };
    }
    barCSS.transition = 'all '+speed+'ms '+ease;
    return barCSS;
  }
  var queue = (function() {
    var pending = [];

    function next() {
      var fn = pending.shift();
      if (fn) {
        fn(next);
      }
    }
    return function(fn) {
      pending.push(fn);
      if (pending.length == 1) next();
    };
  })();
  var css = (function() {
    var cssPrefixes = [ 'Webkit', 'O', 'Moz', 'ms' ],
        cssProps    = {};
    function camelCase(string) {
      return string.replace(/^-ms-/, 'ms-').replace(/-([\da-z])/gi, function(match, letter) {
        return letter.toUpperCase();
      });
    }
   function getVendorProp(name) {
      var style = document.body.style;
      if (name in style) return name;
      var i = cssPrefixes.length,
          capName = name.charAt(0).toUpperCase() + name.slice(1),
          vendorName;
      while (i--) {
        vendorName = cssPrefixes[i] + capName;
        if (vendorName in style) return vendorName;
      }
      return name;
    }
    function getStyleProp(name) {
      name = camelCase(name);
      return cssProps[name] || (cssProps[name] = getVendorProp(name));
    }
    function applyCss(element, prop, value) {
      prop = getStyleProp(prop);
      element.style[prop] = value;
    }
    return function(element, properties) {
      var args = arguments,
          prop,
          value;
      if (args.length == 2) {
        for (prop in properties) {
          value = properties[prop];
          if (value !== undefined && properties.hasOwnProperty(prop)) applyCss(element, prop, value);
        }
      } else {
        applyCss(element, args[1], args[2]);
      }
    }
  })();
  function hasClass(element, name) {
    var list = typeof element == 'string' ? element : classList(element);
    return list.indexOf(' ' + name + ' ') >= 0;
  }
  function addClass(element, name) {
    var oldList = classList(element),
        newList = oldList + name;
    if (hasClass(oldList, name)) return;
    element.className = newList.substring(1);
  }
  function removeClass(element, name) {
    var oldList = classList(element),
        newList;
    if (!hasClass(element, name)) return;
    newList = oldList.replace(' ' + name + ' ', ' ');
    element.className = newList.substring(1, newList.length - 1);
  }
  function classList(element) {
    return (' ' + (element && element.className || '') + ' ').replace(/\s+/gi, ' ');
  }
  function removeElement(element) {
    element && element.parentNode && element.parentNode.removeChild(element);
  }
  return NProgress;
});