--- /dev/null
+'use strict';
+
+exports.__esModule = true;
+
+var _eventTarget = require('../event-target');
+
+var _eventTarget2 = _interopRequireDefault(_eventTarget);
+
+var _browser = require('../utils/browser.js');
+
+var browser = _interopRequireWildcard(_browser);
+
+var _document = require('global/document');
+
+var _document2 = _interopRequireDefault(_document);
+
+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; } }
+
+function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { 'default': obj }; }
+
+function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
+
+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; }
+
+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; } /**
+ * @file track-list.js
+ */
+
+
+/**
+ * Common functionaliy between {@link TextTrackList}, {@link AudioTrackList}, and
+ * {@link VideoTrackList}
+ *
+ * @extends EventTarget
+ */
+var TrackList = function (_EventTarget) {
+ _inherits(TrackList, _EventTarget);
+
+ /**
+ * Create an instance of this class
+ *
+ * @param {Track[]} tracks
+ * A list of tracks to initialize the list with.
+ *
+ * @param {Object} [list]
+ * The child object with inheritance done manually for ie8.
+ *
+ * @abstract
+ */
+ function TrackList() {
+ var tracks = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : [];
+
+ var _ret;
+
+ var list = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : null;
+
+ _classCallCheck(this, TrackList);
+
+ var _this = _possibleConstructorReturn(this, _EventTarget.call(this));
+
+ if (!list) {
+ list = _this; // eslint-disable-line
+ if (browser.IS_IE8) {
+ list = _document2['default'].createElement('custom');
+ for (var prop in TrackList.prototype) {
+ if (prop !== 'constructor') {
+ list[prop] = TrackList.prototype[prop];
+ }
+ }
+ }
+ }
+
+ list.tracks_ = [];
+
+ /**
+ * @member {number} length
+ * The current number of `Track`s in the this Trackist.
+ */
+ Object.defineProperty(list, 'length', {
+ get: function get() {
+ return this.tracks_.length;
+ }
+ });
+
+ for (var i = 0; i < tracks.length; i++) {
+ list.addTrack_(tracks[i]);
+ }
+
+ // must return the object, as for ie8 it will not be this
+ // but a reference to a document object
+ return _ret = list, _possibleConstructorReturn(_this, _ret);
+ }
+
+ /**
+ * Add a {@link Track} to the `TrackList`
+ *
+ * @param {Track} track
+ * The audio, video, or text track to add to the list.
+ *
+ * @fires TrackList#addtrack
+ * @private
+ */
+
+
+ TrackList.prototype.addTrack_ = function addTrack_(track) {
+ var index = this.tracks_.length;
+
+ if (!('' + index in this)) {
+ Object.defineProperty(this, index, {
+ get: function get() {
+ return this.tracks_[index];
+ }
+ });
+ }
+
+ // Do not add duplicate tracks
+ if (this.tracks_.indexOf(track) === -1) {
+ this.tracks_.push(track);
+ /**
+ * Triggered when a track is added to a track list.
+ *
+ * @event TrackList#addtrack
+ * @type {EventTarget~Event}
+ * @property {Track} track
+ * A reference to track that was added.
+ */
+ this.trigger({
+ track: track,
+ type: 'addtrack'
+ });
+ }
+ };
+
+ /**
+ * Remove a {@link Track} from the `TrackList`
+ *
+ * @param {Track} track
+ * The audio, video, or text track to remove from the list.
+ *
+ * @fires TrackList#removetrack
+ * @private
+ */
+
+
+ TrackList.prototype.removeTrack_ = function removeTrack_(rtrack) {
+ var track = void 0;
+
+ for (var i = 0, l = this.length; i < l; i++) {
+ if (this[i] === rtrack) {
+ track = this[i];
+ if (track.off) {
+ track.off();
+ }
+
+ this.tracks_.splice(i, 1);
+
+ break;
+ }
+ }
+
+ if (!track) {
+ return;
+ }
+
+ /**
+ * Triggered when a track is removed from track list.
+ *
+ * @event TrackList#removetrack
+ * @type {EventTarget~Event}
+ * @property {Track} track
+ * A reference to track that was removed.
+ */
+ this.trigger({
+ track: track,
+ type: 'removetrack'
+ });
+ };
+
+ /**
+ * Get a Track from the TrackList by a tracks id
+ *
+ * @param {String} id - the id of the track to get
+ * @method getTrackById
+ * @return {Track}
+ * @private
+ */
+
+
+ TrackList.prototype.getTrackById = function getTrackById(id) {
+ var result = null;
+
+ for (var i = 0, l = this.length; i < l; i++) {
+ var track = this[i];
+
+ if (track.id === id) {
+ result = track;
+ break;
+ }
+ }
+
+ return result;
+ };
+
+ return TrackList;
+}(_eventTarget2['default']);
+
+/**
+ * Triggered when a different track is selected/enabled.
+ *
+ * @event TrackList#change
+ * @type {EventTarget~Event}
+ */
+
+/**
+ * Events that can be called with on + eventName. See {@link EventHandler}.
+ *
+ * @property {Object} TrackList#allowedEvents_
+ * @private
+ */
+
+
+TrackList.prototype.allowedEvents_ = {
+ change: 'change',
+ addtrack: 'addtrack',
+ removetrack: 'removetrack'
+};
+
+// emulate attribute EventHandler support to allow for feature detection
+for (var event in TrackList.prototype.allowedEvents_) {
+ TrackList.prototype['on' + event] = null;
+}
+
+exports['default'] = TrackList;
projects / yaffs-website / blobdiff