vendor/assets/javascripts/webshims/shims/track.js in webshims-rails-0.4.2 vs vendor/assets/javascripts/webshims/shims/track.js in webshims-rails-0.4.3

@@ -1,763 +1,811 @@
-jQuery.webshims.register('track', function($, webshims, window, document, undefined){
-	var mediaelement = webshims.mediaelement;
-	var id = new Date().getTime();
-	var showTracks = {subtitles: 1, captions: 1};
-	var notImplemented = function(){
-		webshims.error('not implemented yet');
-	};
-	
-	var createEventTarget = function(obj){
-		var eventList = {};
-		obj.addEventListener = function(name, fn){
-			if(eventList[name]){
-				webshims.error('always use $.bind to the shimed event: '+ name +' already bound fn was: '+ eventList[name] +' your fn was: '+ fn);
-			}
-			eventList[name] = fn;
-			
-		};
-		obj.removeEventListener = function(name, fn){
-			if(eventList[name] && eventList[name] != fn){
-				webshims.error('always use $.bind/$.unbind to the shimed event: '+ name +' already bound fn was: '+ eventList[name] +' your fn was: '+ fn);
-			}
-			if(eventList[name]){
-				delete eventList[name];
-			}
-		};
-		return obj;
-	};
-	
-	
-	var cueListProto = {
-		getCueById: function(id){
-			var cue = null;
-			for(var i = 0, len = this.length; i < len; i++){
-				if(this[i].id === id){
-					cue = this[i];
-					break;
-				}
-			}
-			return cue;
-		}
-	};
-	var textTrackProto = {
-		shimActiveCues: null,
-		_shimActiveCues: null,
-		activeCues: null,
-		cues: null,
-		kind: 'subtitles',
-		label: '',
-		language: '',
-		mode: 'disabled',
-		readyState: 0,
-		oncuechange: null,
-		toString: function() {
-			return "[object TextTrack]";
-		},
-		addCue: function(cue){
-			if(!this.cues){
-				this.cues = mediaelement.createCueList();
-			} else {
-				var lastCue = this.cues[this.cues.length-1];
-				if(lastCue && lastCue.startTime > cue.startTime){
-					webshims.error("cue startTime higher than previous cue's startTime");
-				}
-			}
-			if(cue.track){
-				webshims.error("cue already part of a track element");
-			}
-			cue.track = this;
-			this.cues.push(cue);
-		},
-		removeCue: notImplemented,
-		DISABLED: 'disabled',
-		OFF: 'disabled',
-		HIDDEN: 'hidden',
-		SHOWING: 'showing',
-		ERROR: 3,
-		LOADED: 2,
-		LOADING: 1,
-		NONE: 0
-	};
-	var copyProps = ['kind', 'label', 'srclang'];
-	
-	var owns = Function.prototype.call.bind(Object.prototype.hasOwnProperty);
-	
-	//ToDo: add/remove event
-	var updateMediaTrackList = function(baseData, trackList){
-		var removed = [];
-		var added = [];
-		var newTracks = [];
-		var i, len;
-		if(!baseData){
-			baseData =  webshims.data(this, 'mediaelementBase') || webshims.data(this, 'mediaelementBase', {});
-		}
-		
-		if(!trackList){
-			baseData.blockTrackListUpdate = true;
-			trackList = $.prop(this, 'textTracks');
-			baseData.blockTrackListUpdate = false;
-		}
-		
-		clearTimeout(baseData.updateTrackListTimer);
-		
-		$('track', this).each(function(){
-			var track = $.prop(this, 'track');
-			newTracks.push(track);
-			if(trackList.indexOf(track) == -1){
-				added.push(track);
-			}
-		});
-		
-		if(baseData.scriptedTextTracks){
-			for(i = 0, len = baseData.scriptedTextTracks.length; i < len; i++){
-				newTracks.push(baseData.scriptedTextTracks[i]);
-				if(trackList.indexOf(baseData.scriptedTextTracks[i]) == -1){
-					added.push(baseData.scriptedTextTracks[i]);
-				}
-			}
-		}
-		
-		for(i = 0, len = trackList.length; i < len; i++){
-			if(newTracks.indexOf(trackList[i]) == -1){
-				removed.push(trackList[i]);
-			}
-		}
-		
-		if(removed.length || added.length){
-			trackList.splice(0);
-			
-			for(i = 0, len = newTracks.length; i < len; i++){
-				trackList.push(newTracks[i]);
-			}
-			for(i = 0, len = removed.length; i < len; i++){
-				$([trackList]).triggerHandler($.Event({type: 'removetrack', track: trackList, track: removed[i]}));
-			}
-			for(i = 0, len = added.length; i < len; i++){
-				$([trackList]).triggerHandler($.Event({type: 'addtrack', track: trackList, track: added[i]}));
-			}
-			if(baseData.scriptedTextTracks || removed.length){
-				$(this).triggerHandler('updatetrackdisplay');
-			}
-		}
-	};
-	
-	var refreshTrack = function(track, trackData){
-		var mode, kind;
-		if(!trackData){
-			trackData = webshims.data(track, 'trackData');
-		}
-		if(trackData && !trackData.isTriggering){
-			trackData.isTriggering = true;
-			mode = (trackData.track || {}).mode; 
-			kind = (trackData.track || {}).kind; 
-			setTimeout(function(){
-				if(mode !== (trackData.track || {}).mode || kind != (trackData.track || {}).kind){
-					if(!(trackData.track || {}).readyState){
-						$(track).triggerHandler('checktrackmode');
-					} else {
-						$(track).parent().triggerHandler('updatetrackdisplay');
-					}
-				}
-				trackData.isTriggering = false;
-				
-			}, 9);
-		}
-	};
-	
-	var emptyDiv = $('<div />')[0];
-	window.TextTrackCue = function(startTime, endTime, text){
-		if(arguments.length != 3){
-			webshims.error("wrong arguments.length for TextTrackCue.constructor");
-		}
-		
-		this.startTime = startTime;
-		this.endTime = endTime;
-		this.text = text;
-		
-		this.id = "";
-		this.pauseOnExit = false;
-		
-		createEventTarget(this);
-	};
-	
-	window.TextTrackCue.prototype = {
-		
-		onenter: null,
-		onexit: null,
-		pauseOnExit: false,
-		getCueAsHTML: function(){
-			var lastText = "";
-			var parsedText = "";
-			var fragment = document.createDocumentFragment();
-			var fn;
-			if(!owns(this, 'getCueAsHTML')){
-				fn = this.getCueAsHTML = function(){
-					var i, len;
-					if(lastText != this.text){
-						lastText = this.text;
-						parsedText = mediaelement.parseCueTextToHTML(lastText);
-						emptyDiv.innerHTML = parsedText;
-						
-						for(i = 0, len = emptyDiv.childNodes.length; i < len; i++){
-							fragment.appendChild(emptyDiv.childNodes[i].cloneNode(true));
-						}
-					}
-					return fragment.cloneNode(true);
-				};
-				
-			}
-			return fn ? fn.apply(this, arguments) : fragment.cloneNode(true);
-		},
-		track: null,
-		
-		
-		id: ''
-		//todo-->
-//			,
-//			snapToLines: true,
-//			line: 'auto',
-//			size: 100,
-//			position: 50,
-//			vertical: '',
-//			align: 'middle'
-	};
-	
-	
-	
-	
-	
-	mediaelement.createCueList = function(){
-		return $.extend([], cueListProto);
-	};
-	
-	mediaelement.parseCueTextToHTML = (function(){
-		var tagSplits = /(<\/?[^>]+>)/ig;
-		var allowedTags = /^(?:c|v|ruby|rt|b|i|u)/;
-		var regEnd = /\<\s*\//;
-		var addToTemplate = function(localName, attribute, tag, html){
-			var ret;
-			if(regEnd.test(html)){
-				ret = '</'+ localName +'>';
-			} else {
-				tag.splice(0, 1);
-				ret =  '<'+ localName +' '+ attribute +'="'+ (tag.join(' ').replace(/\"/g, '&#34;')) +'">';
-			}
-			return ret;
-		};
-		var replacer = function(html){
-			var tag = html.replace(/[<\/>]+/ig,"").split(/[\s\.]+/);
-			if(tag[0]){
-				tag[0] = tag[0].toLowerCase();
-				if(allowedTags.test(tag[0])){
-					if(tag[0] == 'c'){
-						html = addToTemplate('span', 'class', tag, html);
-					} else if(tag[0] == 'v'){
-						html = addToTemplate('q', 'title', tag, html);
-					}
-				} else {
-					html = "";
-				}
-			}
-			return html;
-		};
-		
-		return function(cueText){
-			return cueText.replace(tagSplits, replacer);
-		};
-	})();
-	
-	mediaelement.loadTextTrack = function(mediaelem, track, trackData, _default){
-		var loadEvents = 'play playing timeupdate updatetrackdisplay';
-		var obj = trackData.track;
-		var load = function(){
-			var src = $.prop(track, 'src');
-			var error;
-			var ajax;
-			if(obj.mode != 'disabled' && src && $.attr(track, 'src')){
-				$(mediaelem).unbind(loadEvents, load);
-				$(track).unbind('checktrackmode', load);
-				if(!obj.readyState){
-					error = function(){
-						obj.readyState = 3;
-						obj.cues = null;
-						obj.activeCues = obj.shimActiveCues = obj._shimActiveCues = null;
-						$(track).triggerHandler('error');
-					};
-					obj.readyState = 1;
-					try {
-						obj.cues = mediaelement.createCueList();
-						obj.activeCues = obj.shimActiveCues = obj._shimActiveCues = mediaelement.createCueList();
-						ajax = $.ajax({
-							dataType: 'text',
-							url: src,
-							success: function(text){
-								if(ajax.getResponseHeader('content-type') != 'text/vtt'){
-									webshims.error('set the mime-type of your WebVTT files to text/vtt. see: http://dev.w3.org/html5/webvtt/#text/vtt');
-								}
-								mediaelement.parseCaptions(text, obj, function(cues){
-									if(cues && 'length' in cues){
-										obj.readyState = 2;
-										$(track).triggerHandler('load');
-										$(mediaelem).triggerHandler('updatetrackdisplay');
-									} else {
-										error();
-									}
-								});
-								
-							},
-							error: error
-						});
-					} catch(er){
-						error();
-						webshims.warn(er);
-					}
-				}
-			}
-		};
-		obj.readyState = 0;
-		obj.shimActiveCues = null;
-		obj._shimActiveCues = null;
-		obj.activeCues = null;
-		obj.cues = null;
-		$(mediaelem).unbind(loadEvents, load);
-		$(track).unbind('checktrackmode', load);
-		$(mediaelem).bind(loadEvents, load);
-		$(track).bind('checktrackmode', load);
-		if(_default){
-			obj.mode = showTracks[obj.kind] ? 'showing' : 'hidden';
-			load();
-		}
-	};
-	
-	mediaelement.createTextTrack = function(mediaelem, track){
-		var obj, trackData;
-		if(track.nodeName){
-			trackData = webshims.data(track, 'trackData');
-			
-			if(trackData){
-				refreshTrack(track, trackData);
-				obj = trackData.track;
-			}
-		}
-		
-		if(!obj){
-			obj = createEventTarget(webshims.objectCreate(textTrackProto));
-			copyProps.forEach(function(copyProp){
-				var prop = $.prop(track, copyProp);
-				if(prop){
-					if(copyProp == 'srclang'){
-						copyProp = 'language';
-					}
-					obj[copyProp] = prop;
-				}
-			});
-			
-			
-			if(track.nodeName){
-				trackData = webshims.data(track, 'trackData', {track: obj});
-				mediaelement.loadTextTrack(mediaelem, track, trackData, $.prop(track, 'default'));
-			} else {
-				obj.cues = mediaelement.createCueList();
-				obj.activeCues = obj._shimActiveCues = obj.shimActiveCues = mediaelement.createCueList();
-				obj.mode = 'hidden';
-				obj.readyState = 2;
-			}
-		}
-		return obj;
-	};
-	
-	
-/*
-taken from:
-Captionator 0.5.1 [CaptionCrunch]
-Christopher Giffard, 2011
-Share and enjoy
-
-https://github.com/cgiffard/Captionator
-
-modified for webshims
-*/
-	mediaelement.parseCaptionChunk = (function(){
-		// Set up timestamp parsers
-		var WebVTTTimestampParser			= /^(\d{2})?:?(\d{2}):(\d{2})\.(\d+)\s+\-\-\>\s+(\d{2})?:?(\d{2}):(\d{2})\.(\d+)\s*(.*)/;
-		var GoogleTimestampParser		= /^([\d\.]+)\s+\+([\d\.]+)\s*(.*)/;
-		var WebVTTDEFAULTSCueParser		= /^(DEFAULTS|DEFAULT)\s+\-\-\>\s+(.*)/g;
-		var WebVTTSTYLECueParser		= /^(STYLE|STYLES)\s+\-\-\>\s*\n([\s\S]*)/g;
-		var WebVTTCOMMENTCueParser		= /^(COMMENT|COMMENTS)\s+\-\-\>\s+(.*)/g;
-		
-		return function(subtitleElement,objectCount){
-			var cueDefaults = [];
-		
-			var subtitleParts, timeIn, timeOut, html, timeData, subtitlePartIndex, cueSettings = "", id, specialCueData;
-			var timestampMatch, tmpCue;
-
-			// WebVTT Special Cue Logic
-			if ((specialCueData = WebVTTDEFAULTSCueParser.exec(subtitleElement))) {
-//				cueDefaults = specialCueData.slice(2).join("");
-//				cueDefaults = cueDefaults.split(/\s+/g).filter(function(def) { return def && !!def.length; });
-				return null;
-			} else if ((specialCueData = WebVTTSTYLECueParser.exec(subtitleElement))) {
-				return null;
-			} else if ((specialCueData = WebVTTCOMMENTCueParser.exec(subtitleElement))) {
-				return null; // At this stage, we don't want to do anything with these.
-			}
-			
-			subtitleParts = subtitleElement.split(/\n/g);
-		
-			// Trim off any blank lines (logically, should only be max. one, but loop to be sure)
-			while (!subtitleParts[0].replace(/\s+/ig,"").length && subtitleParts.length > 0) {
-				subtitleParts.shift();
-			}
-		
-			if (subtitleParts[0].match(/^\s*[a-z0-9]+\s*$/ig)) {
-				// The identifier becomes the cue ID (when *we* load the cues from file. Programatically created cues can have an ID of whatever.)
-				id = String(subtitleParts.shift().replace(/\s*/ig,""));
-			}
-		
-			for (subtitlePartIndex = 0; subtitlePartIndex < subtitleParts.length; subtitlePartIndex ++) {
-				var timestamp = subtitleParts[subtitlePartIndex];
-				
-				if ((timestampMatch = WebVTTTimestampParser.exec(timestamp))) {
-					
-					// WebVTT
-					
-					timeData = timestampMatch.slice(1);
-					
-					timeIn =	parseInt((timeData[0]||0) * 60 * 60,10) +	// Hours
-								parseInt((timeData[1]||0) * 60,10) +		// Minutes
-								parseInt((timeData[2]||0),10) +				// Seconds
-								parseFloat("0." + (timeData[3]||0));		// MS
-					
-					timeOut =	parseInt((timeData[4]||0) * 60 * 60,10) +	// Hours
-								parseInt((timeData[5]||0) * 60,10) +		// Minutes
-								parseInt((timeData[6]||0),10) +				// Seconds
-								parseFloat("0." + (timeData[7]||0));		// MS
-/*
-					if (timeData[8]) {
-						cueSettings = timeData[8];
-					}
-*/
-				}
-				
-				// We've got the timestamp - return all the other unmatched lines as the raw subtitle data
-				subtitleParts = subtitleParts.slice(0,subtitlePartIndex).concat(subtitleParts.slice(subtitlePartIndex+1));
-				break;
-			}
-
-			if (!timeIn && !timeOut) {
-				// We didn't extract any time information. Assume the cue is invalid!
-				return null;
-			}
-/*
-			// Consolidate cue settings, convert defaults to object
-			var compositeCueSettings =
-				cueDefaults
-					.reduce(function(previous,current,index,array){
-						previous[current.split(":")[0]] = current.split(":")[1];
-						return previous;
-					},{});
-			
-			// Loop through cue settings, replace defaults with cue specific settings if they exist
-			compositeCueSettings =
-				cueSettings
-					.split(/\s+/g)
-					.filter(function(set) { return set && !!set.length; })
-					// Convert array to a key/val object
-					.reduce(function(previous,current,index,array){
-						previous[current.split(":")[0]] = current.split(":")[1];
-						return previous;
-					},compositeCueSettings);
-			
-			// Turn back into string like the TextTrackCue constructor expects
-			cueSettings = "";
-			for (var key in compositeCueSettings) {
-				if (compositeCueSettings.hasOwnProperty(key)) {
-					cueSettings += !!cueSettings.length ? " " : "";
-					cueSettings += key + ":" + compositeCueSettings[key];
-				}
-			}
-*/
-			// The remaining lines are the subtitle payload itself (after removing an ID if present, and the time);
-			html = subtitleParts.join("\n");
-			tmpCue = new TextTrackCue(timeIn, timeOut, html);
-			if(id){
-				tmpCue.id = id;
-			}
-			return tmpCue;
-		};
-	})();
-	
-	mediaelement.parseCaptions = function(captionData, track, complete) {
-			var subtitles = mediaelement.createCueList();
-			var cue, lazyProcess, regWevVTT;
-			var startDate;
-			var isWEBVTT;
-			if (captionData) {
-				
-				regWevVTT = /^WEBVTT(\s*FILE)?/ig;
-				
-				lazyProcess = function(i, len){
-					
-					for(; i < len; i++){
-						cue = captionData[i];
-						if(regWevVTT.test(cue)){
-							isWEBVTT = true;
-						} else if(cue.replace(/\s*/ig,"").length){
-							if(!isWEBVTT){
-								webshims.error('please use WebVTT format. This is the standard');
-								complete(null);
-								break;
-							}
-							cue = mediaelement.parseCaptionChunk(cue, i);
-							if(cue){
-								track.addCue(cue);
-							}
-						}
-						if(startDate < (new Date().getTime()) - 9){
-							i++;
-							setTimeout(function(){
-								startDate = new Date().getTime();
-								lazyProcess(i, len);
-							}, 90);
-							
-							break;
-						}
-					}
-					if(i >= len){
-						if(!isWEBVTT){
-							webshims.error('please use WebVTT format. This is the standard');
-						}
-						complete(track.cues);
-					}
-				};
-				
-				captionData = captionData.replace(/\r\n/g,"\n");
-				
-				setTimeout(function(){
-					captionData = captionData.replace(/\r/g,"\n");
-					setTimeout(function(){
-						startDate = new Date().getTime();
-						captionData = captionData.split(/\n\n+/g);
-						lazyProcess(0, captionData.length);
-					}, 9);
-				}, 9);
-				
-			} else {
-				webshims.error("Required parameter captionData not supplied.");
-			}
-		};
-	
-	
-	mediaelement.createTrackList = function(mediaelem, baseData){
-		baseData = baseData || webshims.data(mediaelem, 'mediaelementBase') || webshims.data(mediaelem, 'mediaelementBase', {});
-		if(!baseData.textTracks){
-			baseData.textTracks = [];
-			webshims.defineProperties(baseData.textTracks, {
-				onaddtrack: {value: null},
-				onremovetrack: {value: null}
-			});
-			createEventTarget(baseData.textTracks);
-		}
-		return baseData.textTracks;
-	};
-	
-	if(!Modernizr.track){
-		webshims.defineNodeNamesBooleanProperty(['track'], 'default');
-		webshims.reflectProperties(['track'], ['srclang', 'label']);
-		
-		webshims.defineNodeNameProperties('track', {
-			src: {
-				//attr: {},
-				reflect: true,
-				propType: 'src'
-			}
-		});
-	}
-	
-	webshims.defineNodeNameProperties('track', {
-		kind: {
-			attr: Modernizr.track ? {
-				set: function(value){
-					var trackData = webshims.data(this, 'trackData');
-					this.setAttribute('data-kind', value);
-					if(trackData){
-						trackData.attrKind = value;
-					}
-				},
-				get: function(){
-					var trackData = webshims.data(this, 'trackData');
-					if(trackData && ('attrKind' in trackData)){
-						return trackData.attrKind;
-					}
-					return this.getAttribute('kind');
-				}
-			} : {},
-			reflect: true,
-			propType: 'enumarated',
-			defaultValue: 'subtitles',
-			limitedTo: ['subtitles', 'captions', 'descriptions', 'chapters', 'metadata']
-		}
-	});
-	
-	webshims.onNodeNamesPropertyModify('track', 'kind', function(){
-		var trackData = webshims.data(this, 'trackData');
-		if(trackData){
-			trackData.track.kind = $.prop(this, 'kind');
-			refreshTrack(this, trackData);
-		}
-	});
-	
-	webshims.onNodeNamesPropertyModify('track', 'src', function(val){
-		if(val){
-			var data = webshims.data(this, 'trackData');
-			var media;
-			if(data){
-				media = $(this).closest('video, audio');
-				if(media[0]){
-					mediaelement.loadTextTrack(media, this, data);
-				}
-			}
-		}
-		
-	});
-	
-	//
-	
-	webshims.defineNodeNamesProperties(['track'], {
-		ERROR: {
-			value: 3
-		},
-		LOADED: {
-			value: 2
-		},
-		LOADING: {
-			value: 1
-		},
-		NONE: {
-			value: 0
-		},
-		readyState: {
-			get: function(){
-				return ($.prop(this, 'track') || {readyState: 0}).readyState;
-			},
-			writeable: false
-		},
-		track: {
-			get: function(){
-				return mediaelement.createTextTrack($(this).closest('audio, video')[0], this);
-			},
-			writeable: false
-		}
-	}, 'prop');
-	
-	webshims.defineNodeNamesProperties(['audio', 'video'], {
-		textTracks: {
-			get: function(){
-				
-				var media = this;
-				var baseData = webshims.data(media, 'mediaelementBase') || webshims.data(media, 'mediaelementBase', {});
-				var tracks = mediaelement.createTrackList(media, baseData);
-				if(!baseData.blockTrackListUpdate){
-					updateMediaTrackList.call(media, baseData, tracks);
-				}
-				return tracks;
-			},
-			writeable: false
-		},
-		addTextTrack: {
-			value: function(kind, label, lang){
-				var textTrack = mediaelement.createTextTrack(this, {
-					kind: kind || '',
-					label: label || '',
-					srclang: lang || ''
-				});
-				var baseData = webshims.data(this, 'mediaelementBase') || webshims.data(this, 'mediaelementBase', {});
-				if (!baseData.scriptedTextTracks) {
-					baseData.scriptedTextTracks = [];
-				}
-				baseData.scriptedTextTracks.push(textTrack);
-				updateMediaTrackList.call(this);
-				return textTrack;
-			}
-		}
-	}, 'prop');
-
-	
-	$(document).bind('emptied ended updatetracklist', function(e){
-		if($(e.target).is('audio, video')){
-			var baseData = webshims.data(e.target, 'mediaelementBase');
-			if(baseData){
-				clearTimeout(baseData.updateTrackListTimer);
-				baseData.updateTrackListTimer = setTimeout(function(){
-					updateMediaTrackList.call(e.target, baseData);
-				}, 0);
-			}
-		}
-	});
-	
-	var getNativeReadyState = function(trackElem, textTrack){
-		return textTrack.readyState || trackElem.readyState;
-	};
-	
-	webshims.addReady(function(context, insertedElement){
-		var insertedMedia = insertedElement.filter('video, audio, track').closest('audio, video');
-		$('video, audio', context)
-			.add(insertedMedia)
-			.each(function(){
-				updateMediaTrackList.call(this);
-			})
-			.each(function(){
-				if(Modernizr.track){
-					var shimedTextTracks = $.prop(this, 'textTracks');
-					var origTextTracks = this.textTracks;
-					if(shimedTextTracks.length != origTextTracks.length){
-						webshims.error("textTracks couldn't be copied");
-					}
-					
-					$('track', this)
-						.each(function(){
-							var shimedTrack = $.prop(this, 'track');
-							var origTrack = this.track;
-							var kind;
-							var readyState;
-							if(origTrack){
-								kind = $.prop(this, 'kind');
-								readyState = getNativeReadyState(this, origTrack);
-								if (origTrack.mode || readyState) {
-									shimedTrack.mode = origTrack.mode;
-								}
-								//disable track from showing + remove UI
-								if(kind != 'descriptions'){
-									origTrack.mode = (typeof origTrack.mode == 'string') ? 'disabled' : 0;
-									this.kind = 'metadata';
-									$(this).attr({kind: kind});
-								}
-								
-							}
-						})
-						.bind('load error', function(e){
-							if(e.originalEvent){
-								e.stopImmediatePropagation();
-							}
-						})
-					;
-				}
-			})
-		;
-		insertedMedia.each(function(){
-			var media = this;
-			var baseData = webshims.data(media, 'mediaelementBase');
-			if(baseData){
-				clearTimeout(baseData.updateTrackListTimer);
-				baseData.updateTrackListTimer = setTimeout(function(){
-					updateMediaTrackList.call(media, baseData);
-				}, 9);
-			}
-		});
-	});
-	
-	if(Modernizr.track){
-		$('video, audio').trigger('trackapichange');
-	}
-	
+jQuery.webshims.register('track', function($, webshims, window, document, undefined){
+	var mediaelement = webshims.mediaelement;
+	var id = new Date().getTime();
+	//descriptions are not really shown, but they are inserted into the dom
+	var showTracks = {subtitles: 1, captions: 1, descriptions: 1};
+	var notImplemented = function(){
+		webshims.error('not implemented yet');
+	};
+	var supportTrackMod = Modernizr.ES5 && Modernizr.objectAccessor;
+	var createEventTarget = function(obj){
+		var eventList = {};
+		obj.addEventListener = function(name, fn){
+			if(eventList[name]){
+				webshims.error('always use $.bind to the shimed event: '+ name +' already bound fn was: '+ eventList[name] +' your fn was: '+ fn);
+			}
+			eventList[name] = fn;
+			
+		};
+		obj.removeEventListener = function(name, fn){
+			if(eventList[name] && eventList[name] != fn){
+				webshims.error('always use $.bind/$.unbind to the shimed event: '+ name +' already bound fn was: '+ eventList[name] +' your fn was: '+ fn);
+			}
+			if(eventList[name]){
+				delete eventList[name];
+			}
+		};
+		return obj;
+	};
+	
+	
+	var cueListProto = {
+		getCueById: function(id){
+			var cue = null;
+			for(var i = 0, len = this.length; i < len; i++){
+				if(this[i].id === id){
+					cue = this[i];
+					break;
+				}
+			}
+			return cue;
+		}
+	};
+	
+	var textTrackProto = {
+		shimActiveCues: null,
+		_shimActiveCues: null,
+		activeCues: null,
+		cues: null,
+		kind: 'subtitles',
+		label: '',
+		language: '',
+		mode: 'disabled',
+		readyState: 0,
+		oncuechange: null,
+		toString: function() {
+			return "[object TextTrack]";
+		},
+		addCue: function(cue){
+			if(!this.cues){
+				this.cues = mediaelement.createCueList();
+			} else {
+				var lastCue = this.cues[this.cues.length-1];
+				if(lastCue && lastCue.startTime > cue.startTime){
+					webshims.error("cue startTime higher than previous cue's startTime");
+				}
+			}
+			if(cue.track && cue.track.removeCue){
+				cue.track.removeCue(cue);
+			}
+			cue.track = this;
+			this.cues.push(cue);
+		},
+		//ToDo: make it more dynamic
+		removeCue: function(cue){
+			var cues = this.cues || [];
+			var i = 0;
+			var len = cues.length;
+			if(cue.track != this){
+				webshims.error("cue not part of track");
+				return;
+			}
+			for(; i < len; i++){
+				if(cues[i] === cue){
+					cues.splice(i, 1);
+					cue.track = null;
+					break;
+				}
+			}
+			if(cue.track){
+				webshims.error("cue not part of track");
+				return;
+			}
+		},
+		DISABLED: 'disabled',
+		OFF: 'disabled',
+		HIDDEN: 'hidden',
+		SHOWING: 'showing',
+		ERROR: 3,
+		LOADED: 2,
+		LOADING: 1,
+		NONE: 0
+	};
+	var copyProps = ['kind', 'label', 'srclang'];
+	var copyName = {srclang: 'language'};
+	
+	var owns = Function.prototype.call.bind(Object.prototype.hasOwnProperty);
+	
+	var updateMediaTrackList = function(baseData, trackList){
+		var removed = [];
+		var added = [];
+		var newTracks = [];
+		var i, len;
+		if(!baseData){
+			baseData =  webshims.data(this, 'mediaelementBase') || webshims.data(this, 'mediaelementBase', {});
+		}
+		
+		if(!trackList){
+			baseData.blockTrackListUpdate = true;
+			trackList = $.prop(this, 'textTracks');
+			baseData.blockTrackListUpdate = false;
+		}
+		
+		clearTimeout(baseData.updateTrackListTimer);
+		
+		$('track', this).each(function(){
+			var track = $.prop(this, 'track');
+			newTracks.push(track);
+			if(trackList.indexOf(track) == -1){
+				added.push(track);
+			}
+		});
+		
+		if(baseData.scriptedTextTracks){
+			for(i = 0, len = baseData.scriptedTextTracks.length; i < len; i++){
+				newTracks.push(baseData.scriptedTextTracks[i]);
+				if(trackList.indexOf(baseData.scriptedTextTracks[i]) == -1){
+					added.push(baseData.scriptedTextTracks[i]);
+				}
+			}
+		}
+		
+		for(i = 0, len = trackList.length; i < len; i++){
+			if(newTracks.indexOf(trackList[i]) == -1){
+				removed.push(trackList[i]);
+			}
+		}
+		
+		if(removed.length || added.length){
+			trackList.splice(0);
+			
+			for(i = 0, len = newTracks.length; i < len; i++){
+				trackList.push(newTracks[i]);
+			}
+			for(i = 0, len = removed.length; i < len; i++){
+				$([trackList]).triggerHandler($.Event({type: 'removetrack', track: trackList, track: removed[i]}));
+			}
+			for(i = 0, len = added.length; i < len; i++){
+				$([trackList]).triggerHandler($.Event({type: 'addtrack', track: trackList, track: added[i]}));
+			}
+			if(baseData.scriptedTextTracks || removed.length){
+				$(this).triggerHandler('updatetrackdisplay');
+			}
+		}
+	};
+	
+	var refreshTrack = function(track, trackData){
+		if(!trackData){
+			trackData = webshims.data(track, 'trackData');
+		}
+		if(trackData && !trackData.isTriggering){
+			trackData.isTriggering = true;
+			setTimeout(function(){
+				if(!(trackData.track || {}).readyState){
+					$(track).triggerHandler('checktrackmode');
+				} else {
+					$(track).closest('audio, video').triggerHandler('updatetrackdisplay');
+				}
+				trackData.isTriggering = false;
+			}, 1);
+		}
+	};
+	
+	var emptyDiv = $('<div />')[0];
+	window.TextTrackCue = function(startTime, endTime, text){
+		if(arguments.length != 3){
+			webshims.error("wrong arguments.length for TextTrackCue.constructor");
+		}
+		
+		this.startTime = startTime;
+		this.endTime = endTime;
+		this.text = text;
+		
+		this.id = "";
+		this.pauseOnExit = false;
+		
+		createEventTarget(this);
+	};
+	
+	window.TextTrackCue.prototype = {
+		
+		onenter: null,
+		onexit: null,
+		pauseOnExit: false,
+		getCueAsHTML: function(){
+			var lastText = "";
+			var parsedText = "";
+			var fragment = document.createDocumentFragment();
+			var fn;
+			if(!owns(this, 'getCueAsHTML')){
+				fn = this.getCueAsHTML = function(){
+					var i, len;
+					if(lastText != this.text){
+						lastText = this.text;
+						parsedText = mediaelement.parseCueTextToHTML(lastText);
+						emptyDiv.innerHTML = parsedText;
+						
+						for(i = 0, len = emptyDiv.childNodes.length; i < len; i++){
+							fragment.appendChild(emptyDiv.childNodes[i].cloneNode(true));
+						}
+					}
+					return fragment.cloneNode(true);
+				};
+				
+			}
+			return fn ? fn.apply(this, arguments) : fragment.cloneNode(true);
+		},
+		track: null,
+		
+		
+		id: ''
+		//todo-->
+//			,
+//			snapToLines: true,
+//			line: 'auto',
+//			size: 100,
+//			position: 50,
+//			vertical: '',
+//			align: 'middle'
+	};
+	
+	
+	
+	
+	
+	mediaelement.createCueList = function(){
+		return $.extend([], cueListProto);
+	};
+	
+	mediaelement.parseCueTextToHTML = (function(){
+		var tagSplits = /(<\/?[^>]+>)/ig;
+		var allowedTags = /^(?:c|v|ruby|rt|b|i|u)/;
+		var regEnd = /\<\s*\//;
+		var addToTemplate = function(localName, attribute, tag, html){
+			var ret;
+			if(regEnd.test(html)){
+				ret = '</'+ localName +'>';
+			} else {
+				tag.splice(0, 1);
+				ret =  '<'+ localName +' '+ attribute +'="'+ (tag.join(' ').replace(/\"/g, '&#34;')) +'">';
+			}
+			return ret;
+		};
+		var replacer = function(html){
+			var tag = html.replace(/[<\/>]+/ig,"").split(/[\s\.]+/);
+			if(tag[0]){
+				tag[0] = tag[0].toLowerCase();
+				if(allowedTags.test(tag[0])){
+					if(tag[0] == 'c'){
+						html = addToTemplate('span', 'class', tag, html);
+					} else if(tag[0] == 'v'){
+						html = addToTemplate('q', 'title', tag, html);
+					}
+				} else {
+					html = "";
+				}
+			}
+			return html;
+		};
+		
+		return function(cueText){
+			return cueText.replace(tagSplits, replacer);
+		};
+	})();
+	
+	mediaelement.loadTextTrack = function(mediaelem, track, trackData, _default){
+		var loadEvents = 'play playing timeupdate updatetrackdisplay';
+		var obj = trackData.track;
+		var load = function(){
+			var src = $.prop(track, 'src');
+			var error;
+			var ajax;
+			if(obj.mode != 'disabled' && src && $.attr(track, 'src')){
+				$(mediaelem).unbind(loadEvents, load);
+				$(track).unbind('checktrackmode', load);
+				if(!obj.readyState){
+					error = function(){
+						obj.readyState = 3;
+						obj.cues = null;
+						obj.activeCues = obj.shimActiveCues = obj._shimActiveCues = null;
+						$(track).triggerHandler('error');
+					};
+					obj.readyState = 1;
+					try {
+						obj.cues = mediaelement.createCueList();
+						obj.activeCues = obj.shimActiveCues = obj._shimActiveCues = mediaelement.createCueList();
+						ajax = $.ajax({
+							dataType: 'text',
+							url: src,
+							success: function(text){
+								if(ajax.getResponseHeader('content-type') != 'text/vtt'){
+									webshims.error('set the mime-type of your WebVTT files to text/vtt. see: http://dev.w3.org/html5/webvtt/#text/vtt');
+								}
+								mediaelement.parseCaptions(text, obj, function(cues){
+									if(cues && 'length' in cues){
+										obj.readyState = 2;
+										$(track).triggerHandler('load');
+										$(mediaelem).triggerHandler('updatetrackdisplay');
+									} else {
+										error();
+									}
+								});
+								
+							},
+							error: error
+						});
+					} catch(er){
+						error();
+						webshims.warn(er);
+					}
+				}
+			}
+		};
+		obj.readyState = 0;
+		obj.shimActiveCues = null;
+		obj._shimActiveCues = null;
+		obj.activeCues = null;
+		obj.cues = null;
+		$(mediaelem).unbind(loadEvents, load);
+		$(track).unbind('checktrackmode', load);
+		$(mediaelem).bind(loadEvents, load);
+		$(track).bind('checktrackmode', load);
+		if(_default){
+			obj.mode = showTracks[obj.kind] ? 'showing' : 'hidden';
+			load();
+		}
+	};
+	
+	mediaelement.createTextTrack = function(mediaelem, track){
+		var obj, trackData;
+		if(track.nodeName){
+			trackData = webshims.data(track, 'trackData');
+			
+			if(trackData){
+				refreshTrack(track, trackData);
+				obj = trackData.track;
+			}
+		}
+		
+		if(!obj){
+			obj = createEventTarget(webshims.objectCreate(textTrackProto));
+			
+			if(!supportTrackMod){
+				copyProps.forEach(function(copyProp){
+					var prop = $.prop(track, copyProp);
+					if(prop){
+						obj[copyName[copyProp] || copyProp] = prop;
+					}
+				});
+			}
+			
+			
+			if(track.nodeName){
+				
+				if(supportTrackMod){
+					copyProps.forEach(function(copyProp){
+						webshims.defineProperty(obj, copyName[copyProp] || copyProp, {
+							get: function(){
+								return $.prop(track, copyProp);
+							}
+						});
+					});
+				}
+				
+				trackData = webshims.data(track, 'trackData', {track: obj});
+				mediaelement.loadTextTrack(mediaelem, track, trackData, ($.prop(track, 'default') && $(track).siblings('track[default]').andSelf()[0] == track));
+			} else {
+				if(supportTrackMod){
+					copyProps.forEach(function(copyProp){
+						webshims.defineProperty(obj, copyName[copyProp] || copyProp, {
+							value: track[copyProp],
+							writeable: false
+						});
+					});
+				}
+				obj.cues = mediaelement.createCueList();
+				obj.activeCues = obj._shimActiveCues = obj.shimActiveCues = mediaelement.createCueList();
+				obj.mode = 'hidden';
+				obj.readyState = 2;
+			}
+		}
+		return obj;
+	};
+	
+	
+/*
+taken from:
+Captionator 0.5.1 [CaptionCrunch]
+Christopher Giffard, 2011
+Share and enjoy
+
+https://github.com/cgiffard/Captionator
+
+modified for webshims
+*/
+	mediaelement.parseCaptionChunk = (function(){
+		// Set up timestamp parsers
+		var WebVTTTimestampParser			= /^(\d{2})?:?(\d{2}):(\d{2})\.(\d+)\s+\-\-\>\s+(\d{2})?:?(\d{2}):(\d{2})\.(\d+)\s*(.*)/;
+		var GoogleTimestampParser		= /^([\d\.]+)\s+\+([\d\.]+)\s*(.*)/;
+		var WebVTTDEFAULTSCueParser		= /^(DEFAULTS|DEFAULT)\s+\-\-\>\s+(.*)/g;
+		var WebVTTSTYLECueParser		= /^(STYLE|STYLES)\s+\-\-\>\s*\n([\s\S]*)/g;
+		var WebVTTCOMMENTCueParser		= /^(COMMENT|COMMENTS)\s+\-\-\>\s+(.*)/g;
+		
+		return function(subtitleElement,objectCount){
+			var cueDefaults = [];
+		
+			var subtitleParts, timeIn, timeOut, html, timeData, subtitlePartIndex, cueSettings = "", id, specialCueData;
+			var timestampMatch, tmpCue;
+
+			// WebVTT Special Cue Logic
+			if ((specialCueData = WebVTTDEFAULTSCueParser.exec(subtitleElement))) {
+//				cueDefaults = specialCueData.slice(2).join("");
+//				cueDefaults = cueDefaults.split(/\s+/g).filter(function(def) { return def && !!def.length; });
+				return null;
+			} else if ((specialCueData = WebVTTSTYLECueParser.exec(subtitleElement))) {
+				return null;
+			} else if ((specialCueData = WebVTTCOMMENTCueParser.exec(subtitleElement))) {
+				return null; // At this stage, we don't want to do anything with these.
+			}
+			
+			subtitleParts = subtitleElement.split(/\n/g);
+		
+			// Trim off any blank lines (logically, should only be max. one, but loop to be sure)
+			while (!subtitleParts[0].replace(/\s+/ig,"").length && subtitleParts.length > 0) {
+				subtitleParts.shift();
+			}
+		
+			if (subtitleParts[0].match(/^\s*[a-z0-9-\_]+\s*$/ig)) {
+				// The identifier becomes the cue ID (when *we* load the cues from file. Programatically created cues can have an ID of whatever.)
+				id = String(subtitleParts.shift().replace(/\s*/ig,""));
+			}
+		
+			for (subtitlePartIndex = 0; subtitlePartIndex < subtitleParts.length; subtitlePartIndex ++) {
+				var timestamp = subtitleParts[subtitlePartIndex];
+				
+				if ((timestampMatch = WebVTTTimestampParser.exec(timestamp))) {
+					
+					// WebVTT
+					
+					timeData = timestampMatch.slice(1);
+					
+					timeIn =	parseInt((timeData[0]||0) * 60 * 60,10) +	// Hours
+								parseInt((timeData[1]||0) * 60,10) +		// Minutes
+								parseInt((timeData[2]||0),10) +				// Seconds
+								parseFloat("0." + (timeData[3]||0));		// MS
+					
+					timeOut =	parseInt((timeData[4]||0) * 60 * 60,10) +	// Hours
+								parseInt((timeData[5]||0) * 60,10) +		// Minutes
+								parseInt((timeData[6]||0),10) +				// Seconds
+								parseFloat("0." + (timeData[7]||0));		// MS
+/*
+					if (timeData[8]) {
+						cueSettings = timeData[8];
+					}
+*/
+				}
+				
+				// We've got the timestamp - return all the other unmatched lines as the raw subtitle data
+				subtitleParts = subtitleParts.slice(0,subtitlePartIndex).concat(subtitleParts.slice(subtitlePartIndex+1));
+				break;
+			}
+
+			if (!timeIn && !timeOut) {
+				// We didn't extract any time information. Assume the cue is invalid!
+				webshims.warn("couldn't extract time information: "+[timeIn, timeOut, subtitleParts.join("\n"), id].join(' ; '));
+				return null;
+			}
+/*
+			// Consolidate cue settings, convert defaults to object
+			var compositeCueSettings =
+				cueDefaults
+					.reduce(function(previous,current,index,array){
+						previous[current.split(":")[0]] = current.split(":")[1];
+						return previous;
+					},{});
+			
+			// Loop through cue settings, replace defaults with cue specific settings if they exist
+			compositeCueSettings =
+				cueSettings
+					.split(/\s+/g)
+					.filter(function(set) { return set && !!set.length; })
+					// Convert array to a key/val object
+					.reduce(function(previous,current,index,array){
+						previous[current.split(":")[0]] = current.split(":")[1];
+						return previous;
+					},compositeCueSettings);
+			
+			// Turn back into string like the TextTrackCue constructor expects
+			cueSettings = "";
+			for (var key in compositeCueSettings) {
+				if (compositeCueSettings.hasOwnProperty(key)) {
+					cueSettings += !!cueSettings.length ? " " : "";
+					cueSettings += key + ":" + compositeCueSettings[key];
+				}
+			}
+*/
+			// The remaining lines are the subtitle payload itself (after removing an ID if present, and the time);
+			html = subtitleParts.join("\n");
+			tmpCue = new TextTrackCue(timeIn, timeOut, html);
+			if(id){
+				tmpCue.id = id;
+			}
+			return tmpCue;
+		};
+	})();
+	
+	mediaelement.parseCaptions = function(captionData, track, complete) {
+		var subtitles = mediaelement.createCueList();
+		var cue, lazyProcess, regWevVTT;
+		var startDate;
+		var isWEBVTT;
+		if (captionData) {
+			
+			regWevVTT = /^WEBVTT(\s*FILE)?/ig;
+			
+			lazyProcess = function(i, len){
+				
+				for(; i < len; i++){
+					cue = captionData[i];
+					if(regWevVTT.test(cue)){
+						isWEBVTT = true;
+					} else if(cue.replace(/\s*/ig,"").length){
+						if(!isWEBVTT){
+							webshims.error('please use WebVTT format. This is the standard');
+							complete(null);
+							break;
+						}
+						cue = mediaelement.parseCaptionChunk(cue, i);
+						if(cue){
+							track.addCue(cue);
+						}
+					}
+					if(startDate < (new Date().getTime()) - 30){
+						i++;
+						setTimeout(function(){
+							startDate = new Date().getTime();
+							lazyProcess(i, len);
+						}, 90);
+						
+						break;
+					}
+				}
+				if(i >= len){
+					if(!isWEBVTT){
+						webshims.error('please use WebVTT format. This is the standard');
+					}
+					complete(track.cues);
+				}
+			};
+			
+			captionData = captionData.replace(/\r\n/g,"\n");
+			
+			setTimeout(function(){
+				captionData = captionData.replace(/\r/g,"\n");
+				setTimeout(function(){
+					startDate = new Date().getTime();
+					captionData = captionData.split(/\n\n+/g);
+					lazyProcess(0, captionData.length);
+				}, 9);
+			}, 9);
+			
+		} else {
+			webshims.error("Required parameter captionData not supplied.");
+		}
+	};
+	
+	
+	mediaelement.createTrackList = function(mediaelem, baseData){
+		baseData = baseData || webshims.data(mediaelem, 'mediaelementBase') || webshims.data(mediaelem, 'mediaelementBase', {});
+		if(!baseData.textTracks){
+			baseData.textTracks = [];
+			webshims.defineProperties(baseData.textTracks, {
+				onaddtrack: {value: null},
+				onremovetrack: {value: null}
+			});
+			createEventTarget(baseData.textTracks);
+		}
+		return baseData.textTracks;
+	};
+	
+	if(!Modernizr.track){
+		webshims.defineNodeNamesBooleanProperty(['track'], 'default');
+		webshims.reflectProperties(['track'], ['srclang', 'label']);
+		
+		webshims.defineNodeNameProperties('track', {
+			src: {
+				//attr: {},
+				reflect: true,
+				propType: 'src'
+			}
+		});
+	}
+	
+	webshims.defineNodeNameProperties('track', {
+		kind: {
+			attr: Modernizr.track ? {
+				set: function(value){
+					var trackData = webshims.data(this, 'trackData');
+					this.setAttribute('data-kind', value);
+					if(trackData){
+						trackData.attrKind = value;
+					}
+				},
+				get: function(){
+					var trackData = webshims.data(this, 'trackData');
+					if(trackData && ('attrKind' in trackData)){
+						return trackData.attrKind;
+					}
+					return this.getAttribute('kind');
+				}
+			} : {},
+			reflect: true,
+			propType: 'enumarated',
+			defaultValue: 'subtitles',
+			limitedTo: ['subtitles', 'captions', 'descriptions', 'chapters', 'metadata']
+		}
+	});
+	
+	$.each(copyProps, function(i, copyProp){
+		var name = copyName[copyProp] || copyProp;
+		webshims.onNodeNamesPropertyModify('track', copyProp, function(){
+			var trackData = webshims.data(this, 'trackData');
+			var track = this;
+			if(trackData){
+				if(copyProp == 'kind'){
+					refreshTrack(this, trackData);
+				}
+				if(!supportTrackMod){
+					trackData.track[name] = $.prop(this, copyProp);
+				}
+				clearTimeout(trackData.changedTrackPropTimer);
+				trackData.changedTrackPropTimer = setTimeout(function(){
+					$(track).trigger('updatesubtitlestate');
+				}, 1); 
+			}
+		});
+	});		
+	
+	
+	webshims.onNodeNamesPropertyModify('track', 'src', function(val){
+		if(val){
+			var data = webshims.data(this, 'trackData');
+			var media;
+			if(data){
+				media = $(this).closest('video, audio');
+				if(media[0]){
+					mediaelement.loadTextTrack(media, this, data);
+				}
+			}
+		}
+		
+	});
+	
+	//
+	
+	webshims.defineNodeNamesProperties(['track'], {
+		ERROR: {
+			value: 3
+		},
+		LOADED: {
+			value: 2
+		},
+		LOADING: {
+			value: 1
+		},
+		NONE: {
+			value: 0
+		},
+		readyState: {
+			get: function(){
+				return ($.prop(this, 'track') || {readyState: 0}).readyState;
+			},
+			writeable: false
+		},
+		track: {
+			get: function(){
+				return mediaelement.createTextTrack($(this).closest('audio, video')[0], this);
+			},
+			writeable: false
+		}
+	}, 'prop');
+	
+	webshims.defineNodeNamesProperties(['audio', 'video'], {
+		textTracks: {
+			get: function(){
+				var media = this;
+				var baseData = webshims.data(media, 'mediaelementBase') || webshims.data(media, 'mediaelementBase', {});
+				var tracks = mediaelement.createTrackList(media, baseData);
+				if(!baseData.blockTrackListUpdate){
+					updateMediaTrackList.call(media, baseData, tracks);
+				}
+				return tracks;
+			},
+			writeable: false
+		},
+		addTextTrack: {
+			value: function(kind, label, lang){
+				var textTrack = mediaelement.createTextTrack(this, {
+					kind: kind || '',
+					label: label || '',
+					srclang: lang || ''
+				});
+				var baseData = webshims.data(this, 'mediaelementBase') || webshims.data(this, 'mediaelementBase', {});
+				if (!baseData.scriptedTextTracks) {
+					baseData.scriptedTextTracks = [];
+				}
+				baseData.scriptedTextTracks.push(textTrack);
+				updateMediaTrackList.call(this);
+				return textTrack;
+			}
+		}
+	}, 'prop');
+
+	
+	$(document).bind('emptied ended updatetracklist', function(e){
+		if($(e.target).is('audio, video')){
+			var baseData = webshims.data(e.target, 'mediaelementBase');
+			if(baseData){
+				clearTimeout(baseData.updateTrackListTimer);
+				baseData.updateTrackListTimer = setTimeout(function(){
+					updateMediaTrackList.call(e.target, baseData);
+				}, 0);
+			}
+		}
+	});
+	
+	var getNativeReadyState = function(trackElem, textTrack){
+		return textTrack.readyState || trackElem.readyState;
+	};
+	
+	webshims.addReady(function(context, insertedElement){
+		var insertedMedia = insertedElement.filter('video, audio, track').closest('audio, video');
+		$('video, audio', context)
+			.add(insertedMedia)
+			.each(function(){
+				updateMediaTrackList.call(this);
+			})
+			.each(function(){
+				if(Modernizr.track){
+					var shimedTextTracks = $.prop(this, 'textTracks');
+					var origTextTracks = this.textTracks;
+					if(shimedTextTracks.length != origTextTracks.length){
+						webshims.error("textTracks couldn't be copied");
+					}
+					
+					$('track', this)
+						.each(function(){
+							var shimedTrack = $.prop(this, 'track');
+							var origTrack = this.track;
+							var kind;
+							var readyState;
+							if(origTrack){
+								kind = $.prop(this, 'kind');
+								readyState = getNativeReadyState(this, origTrack);
+								if (origTrack.mode || readyState) {
+									shimedTrack.mode = origTrack.mode;
+								}
+								//disable track from showing + remove UI
+								if(kind != 'descriptions'){
+									origTrack.mode = (typeof origTrack.mode == 'string') ? 'disabled' : 0;
+									this.kind = 'metadata';
+									$(this).attr({kind: kind});
+								}
+								
+							}
+						})
+						.bind('load error', function(e){
+							if(e.originalEvent){
+								e.stopImmediatePropagation();
+							}
+						})
+					;
+				}
+			})
+		;
+		insertedMedia.each(function(){
+			var media = this;
+			var baseData = webshims.data(media, 'mediaelementBase');
+			if(baseData){
+				clearTimeout(baseData.updateTrackListTimer);
+				baseData.updateTrackListTimer = setTimeout(function(){
+					updateMediaTrackList.call(media, baseData);
+				}, 9);
+			}
+		});
+	});
+	
+	if(Modernizr.track){
+		$('video, audio').trigger('trackapichange');
+	}
+	
 });
\ No newline at end of file