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/**
* @file html-track-element.js
*/
import EventTarget from '../event-target';
import TextTrack from '../tracks/text-track';
/** @import Tech from '../tech/tech' */
/**
* A single track represented in the DOM.
*
* @see [Spec]{@link https://html.spec.whatwg.org/multipage/embedded-content.html#htmltrackelement}
* @extends EventTarget
*/
class HTMLTrackElement extends EventTarget {
/**
* Create an instance of this class.
*
* @param {Object} options={}
* Object of option names and values
*
* @param {Tech} options.tech
* A reference to the tech that owns this HTMLTrackElement.
*
* @param {TextTrack~Kind} [options.kind='subtitles']
* A valid text track kind.
*
* @param {TextTrack~Mode} [options.mode='disabled']
* A valid text track mode.
*
* @param {string} [options.id='vjs_track_' + Guid.newGUID()]
* A unique id for this TextTrack.
*
* @param {string} [options.label='']
* The menu label for this track.
*
* @param {string} [options.language='']
* A valid two character language code.
*
* @param {string} [options.srclang='']
* A valid two character language code. An alternative, but deprioritized
* version of `options.language`
*
* @param {string} [options.src]
* A url to TextTrack cues.
*
* @param {boolean} [options.default]
* If this track should default to on or off.
*/
constructor(options = {}) {
super();
let readyState;
const track = new TextTrack(options);
this.kind = track.kind;
this.src = track.src;
this.srclang = track.language;
this.label = track.label;
this.default = track.default;
Object.defineProperties(this, {
/**
* @memberof HTMLTrackElement
* @member {HTMLTrackElement~ReadyState} readyState
* The current ready state of the track element.
* @instance
*/
readyState: {
get() {
return readyState;
}
},
/**
* @memberof HTMLTrackElement
* @member {TextTrack} track
* The underlying TextTrack object.
* @instance
*
*/
track: {
get() {
return track;
}
}
});
readyState = HTMLTrackElement.NONE;
/**
* @listens TextTrack#loadeddata
* @fires HTMLTrackElement#load
*/
track.addEventListener('loadeddata', () => {
readyState = HTMLTrackElement.LOADED;
this.trigger({
type: 'load',
target: this
});
});
}
}
/**
* @protected
*/
HTMLTrackElement.prototype.allowedEvents_ = {
load: 'load'
};
/**
* The text track not loaded state.
*
* @type {number}
* @static
*/
HTMLTrackElement.NONE = 0;
/**
* The text track loading state.
*
* @type {number}
* @static
*/
HTMLTrackElement.LOADING = 1;
/**
* The text track loaded state.
*
* @type {number}
* @static
*/
HTMLTrackElement.LOADED = 2;
/**
* The text track failed to load state.
*
* @type {number}
* @static
*/
HTMLTrackElement.ERROR = 3;
export default HTMLTrackElement;
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