aleph1.co.uk Git - yaffs-website/blob - node_modules/video.js/es5/control-bar/progress-control/load-progress-bar.js

   1 'use strict';
   2
   3 exports.__esModule = true;
   4
   5 var _component = require('../../component.js');
   6
   7 var _component2 = _interopRequireDefault(_component);
   8
   9 var _dom = require('../../utils/dom.js');
  10
  11 var Dom = _interopRequireWildcard(_dom);
  12
  13 function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj['default'] = obj; return newObj; } }
  14
  15 function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { 'default': obj }; }
  16
  17 function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
  18
  19 function _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return call && (typeof call === "object" || typeof call === "function") ? call : self; }
  20
  21 function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function, not " + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /**
  22                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 * @file load-progress-bar.js
  23                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 */
  24
  25
  26 /**
  27  * Shows loading progress
  28  *
  29  * @extends Component
  30  */
  31 var LoadProgressBar = function (_Component) {
  32   _inherits(LoadProgressBar, _Component);
  33
  34   /**
  35    * Creates an instance of this class.
  36    *
  37    * @param {Player} player
  38    *        The `Player` that this class should be attached to.
  39    *
  40    * @param {Object} [options]
  41    *        The key/value store of player options.
  42    */
  43   function LoadProgressBar(player, options) {
  44     _classCallCheck(this, LoadProgressBar);
  45
  46     var _this = _possibleConstructorReturn(this, _Component.call(this, player, options));
  47
  48     _this.partEls_ = [];
  49     _this.on(player, 'progress', _this.update);
  50     return _this;
  51   }
  52
  53   /**
  54    * Create the `Component`'s DOM element
  55    *
  56    * @return {Element}
  57    *         The element that was created.
  58    */
  59
  60
  61   LoadProgressBar.prototype.createEl = function createEl() {
  62     return _Component.prototype.createEl.call(this, 'div', {
  63       className: 'vjs-load-progress',
  64       innerHTML: '<span class="vjs-control-text"><span>' + this.localize('Loaded') + '</span>: 0%</span>'
  65     });
  66   };
  67
  68   /**
  69    * Update progress bar
  70    *
  71    * @param {EventTarget~Event} [event]
  72    *        The `progress` event that caused this function to run.
  73    *
  74    * @listens Player#progress
  75    */
  76
  77
  78   LoadProgressBar.prototype.update = function update(event) {
  79     var buffered = this.player_.buffered();
  80     var duration = this.player_.duration();
  81     var bufferedEnd = this.player_.bufferedEnd();
  82     var children = this.partEls_;
  83
  84     // get the percent width of a time compared to the total end
  85     var percentify = function percentify(time, end) {
  86       // no NaN
  87       var percent = time / end || 0;
  88
  89       return (percent >= 1 ? 1 : percent) * 100 + '%';
  90     };
  91
  92     // update the width of the progress bar
  93     this.el_.style.width = percentify(bufferedEnd, duration);
  94
  95     // add child elements to represent the individual buffered time ranges
  96     for (var i = 0; i < buffered.length; i++) {
  97       var start = buffered.start(i);
  98       var end = buffered.end(i);
  99       var part = children[i];
 100
 101       if (!part) {
 102         part = this.el_.appendChild(Dom.createEl());
 103         children[i] = part;
 104       }
 105
 106       // set the percent based on the width of the progress bar (bufferedEnd)
 107       part.style.left = percentify(start, bufferedEnd);
 108       part.style.width = percentify(end - start, bufferedEnd);
 109     }
 110
 111     // remove unused buffered range elements
 112     for (var _i = children.length; _i > buffered.length; _i--) {
 113       this.el_.removeChild(children[_i - 1]);
 114     }
 115     children.length = buffered.length;
 116   };
 117
 118   return LoadProgressBar;
 119 }(_component2['default']);
 120
 121 _component2['default'].registerComponent('LoadProgressBar', LoadProgressBar);
 122 exports['default'] = LoadProgressBar;