--- /dev/null
+'use strict';
+
+exports.__esModule = true;
+
+var _menuButton = require('../menu/menu-button.js');
+
+var _menuButton2 = _interopRequireDefault(_menuButton);
+
+var _component = require('../component.js');
+
+var _component2 = _interopRequireDefault(_component);
+
+var _fn = require('../utils/fn.js');
+
+var Fn = _interopRequireWildcard(_fn);
+
+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-button.js
+ */
+
+
+/**
+ * The base class for buttons that toggle specific track types (e.g. subtitles).
+ *
+ * @extends MenuButton
+ */
+var TrackButton = function (_MenuButton) {
+ _inherits(TrackButton, _MenuButton);
+
+ /**
+ * Creates an instance of this class.
+ *
+ * @param {Player} player
+ * The `Player` that this class should be attached to.
+ *
+ * @param {Object} [options]
+ * The key/value store of player options.
+ */
+ function TrackButton(player, options) {
+ _classCallCheck(this, TrackButton);
+
+ var tracks = options.tracks;
+
+ var _this = _possibleConstructorReturn(this, _MenuButton.call(this, player, options));
+
+ if (_this.items.length <= 1) {
+ _this.hide();
+ }
+
+ if (!tracks) {
+ return _possibleConstructorReturn(_this);
+ }
+
+ var updateHandler = Fn.bind(_this, _this.update);
+
+ tracks.addEventListener('removetrack', updateHandler);
+ tracks.addEventListener('addtrack', updateHandler);
+
+ _this.player_.on('dispose', function () {
+ tracks.removeEventListener('removetrack', updateHandler);
+ tracks.removeEventListener('addtrack', updateHandler);
+ });
+ return _this;
+ }
+
+ return TrackButton;
+}(_menuButton2['default']);
+
+_component2['default'].registerComponent('TrackButton', TrackButton);
+exports['default'] = TrackButton;