metadataplayer: src/js/modules/mediafragment.js@cd051898866e (annotated)

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src/js/modules/mediafragment.js

author	hamidouk
	Thu, 05 Jan 2012 14:58:56 +0100
branch	popcorn-port
changeset 587	cd051898866e
parent 466	d54cf60bb842
child 647	2984fbbcbe35
permissions	-rw-r--r--

implemented hashchange event handler.

462 3583ef3b208b added a modules dir to the build. moved mediafragment.js module inside it. hamidouk parents: diff changeset	1	/* mediafragment module */
3583ef3b208b added a modules dir to the build. moved mediafragment.js module inside it. hamidouk parents: diff changeset	2
3583ef3b208b added a modules dir to the build. moved mediafragment.js module inside it. hamidouk parents: diff changeset	3	IriSP.MediaFragment = function(Popcorn, config, Serializer) {
3583ef3b208b added a modules dir to the build. moved mediafragment.js module inside it. hamidouk parents: diff changeset	4	IriSP.Module.call(this, Popcorn, config, Serializer);
3583ef3b208b added a modules dir to the build. moved mediafragment.js module inside it. hamidouk parents: diff changeset	5
466 d54cf60bb842 annotation requests and timecode request now both work. hamidouk parents: 462 diff changeset	6	this.mutex = false; /* a mutex because we access the url from two different functions */
d54cf60bb842 annotation requests and timecode request now both work. hamidouk parents: 462 diff changeset	7
587 cd051898866e implemented hashchange event handler. hamidouk parents: 466 diff changeset	8	this._Popcorn.listen( "loadedmetadata", IriSP.wrap(this,this.advanceTime));
cd051898866e implemented hashchange event handler. hamidouk parents: 466 diff changeset	9	this._Popcorn.listen( "pause", IriSP.wrap(this,this.updateTime));
cd051898866e implemented hashchange event handler. hamidouk parents: 466 diff changeset	10	this._Popcorn.listen( "seeked", IriSP.wrap(this,this.updateTime));
cd051898866e implemented hashchange event handler. hamidouk parents: 466 diff changeset	11	this._Popcorn.listen( "IriSP.PolemicTweet.click", IriSP.wrap(this,this.updateAnnotation));
cd051898866e implemented hashchange event handler. hamidouk parents: 466 diff changeset	12	this._Popcorn.listen( "IriSP.SegmentsWidget.click", IriSP.wrap(this,this.updateAnnotation));
cd051898866e implemented hashchange event handler. hamidouk parents: 466 diff changeset	13
cd051898866e implemented hashchange event handler. hamidouk parents: 466 diff changeset	14	window.onhashchange = IriSP.wrap(this, this.advanceTime);
462 3583ef3b208b added a modules dir to the build. moved mediafragment.js module inside it. hamidouk parents: diff changeset	15	};
3583ef3b208b added a modules dir to the build. moved mediafragment.js module inside it. hamidouk parents: diff changeset	16
587 cd051898866e implemented hashchange event handler. hamidouk parents: 466 diff changeset	17	IriSP.MediaFragment.prototype = new IriSP.Module();
cd051898866e implemented hashchange event handler. hamidouk parents: 466 diff changeset	18
cd051898866e implemented hashchange event handler. hamidouk parents: 466 diff changeset	19	IriSP.MediaFragment.prototype.advanceTime = function() {
462 3583ef3b208b added a modules dir to the build. moved mediafragment.js module inside it. hamidouk parents: diff changeset	20	var url = window.location.href;
3583ef3b208b added a modules dir to the build. moved mediafragment.js module inside it. hamidouk parents: diff changeset	21
3583ef3b208b added a modules dir to the build. moved mediafragment.js module inside it. hamidouk parents: diff changeset	22	if ( url.split( "#" )[ 1 ] != null ) {
3583ef3b208b added a modules dir to the build. moved mediafragment.js module inside it. hamidouk parents: diff changeset	23	pageoffset = url.split( "#" )[1];
3583ef3b208b added a modules dir to the build. moved mediafragment.js module inside it. hamidouk parents: diff changeset	24
3583ef3b208b added a modules dir to the build. moved mediafragment.js module inside it. hamidouk parents: diff changeset	25	if ( pageoffset.substring(0, 2) === "t=") {
3583ef3b208b added a modules dir to the build. moved mediafragment.js module inside it. hamidouk parents: diff changeset	26	// timecode
3583ef3b208b added a modules dir to the build. moved mediafragment.js module inside it. hamidouk parents: diff changeset	27	if ( pageoffset.substring( 2 ) != null ) {
3583ef3b208b added a modules dir to the build. moved mediafragment.js module inside it. hamidouk parents: diff changeset	28	var offsettime = pageoffset.substring( 2 );
3583ef3b208b added a modules dir to the build. moved mediafragment.js module inside it. hamidouk parents: diff changeset	29	this._Popcorn.currentTime( parseFloat( offsettime ) );
3583ef3b208b added a modules dir to the build. moved mediafragment.js module inside it. hamidouk parents: diff changeset	30	}
3583ef3b208b added a modules dir to the build. moved mediafragment.js module inside it. hamidouk parents: diff changeset	31	} else if ( pageoffset.substring(0, 2) === "a=") {
3583ef3b208b added a modules dir to the build. moved mediafragment.js module inside it. hamidouk parents: diff changeset	32	// annotation
3583ef3b208b added a modules dir to the build. moved mediafragment.js module inside it. hamidouk parents: diff changeset	33	var annotationId = pageoffset.substring( 2 );
3583ef3b208b added a modules dir to the build. moved mediafragment.js module inside it. hamidouk parents: diff changeset	34
3583ef3b208b added a modules dir to the build. moved mediafragment.js module inside it. hamidouk parents: diff changeset	35	// there's no better way than that because
3583ef3b208b added a modules dir to the build. moved mediafragment.js module inside it. hamidouk parents: diff changeset	36	// of possible race conditions
3583ef3b208b added a modules dir to the build. moved mediafragment.js module inside it. hamidouk parents: diff changeset	37	this._serializer.sync(IriSP.wrap(this, function() {
587 cd051898866e implemented hashchange event handler. hamidouk parents: 466 diff changeset	38	this.lookupAnnotation.call(this, annotationId);
462 3583ef3b208b added a modules dir to the build. moved mediafragment.js module inside it. hamidouk parents: diff changeset	39	}));
3583ef3b208b added a modules dir to the build. moved mediafragment.js module inside it. hamidouk parents: diff changeset	40	}
3583ef3b208b added a modules dir to the build. moved mediafragment.js module inside it. hamidouk parents: diff changeset	41	}
3583ef3b208b added a modules dir to the build. moved mediafragment.js module inside it. hamidouk parents: diff changeset	42	};
3583ef3b208b added a modules dir to the build. moved mediafragment.js module inside it. hamidouk parents: diff changeset	43
587 cd051898866e implemented hashchange event handler. hamidouk parents: 466 diff changeset	44	IriSP.MediaFragment.prototype.updateTime = function() {
466 d54cf60bb842 annotation requests and timecode request now both work. hamidouk parents: 462 diff changeset	45	if (this.mutex === true) {
d54cf60bb842 annotation requests and timecode request now both work. hamidouk parents: 462 diff changeset	46	return;
d54cf60bb842 annotation requests and timecode request now both work. hamidouk parents: 462 diff changeset	47	}
d54cf60bb842 annotation requests and timecode request now both work. hamidouk parents: 462 diff changeset	48
462 3583ef3b208b added a modules dir to the build. moved mediafragment.js module inside it. hamidouk parents: diff changeset	49	var history = window.history;
3583ef3b208b added a modules dir to the build. moved mediafragment.js module inside it. hamidouk parents: diff changeset	50	if ( !history.pushState ) {
3583ef3b208b added a modules dir to the build. moved mediafragment.js module inside it. hamidouk parents: diff changeset	51	return false;
3583ef3b208b added a modules dir to the build. moved mediafragment.js module inside it. hamidouk parents: diff changeset	52	}
3583ef3b208b added a modules dir to the build. moved mediafragment.js module inside it. hamidouk parents: diff changeset	53
3583ef3b208b added a modules dir to the build. moved mediafragment.js module inside it. hamidouk parents: diff changeset	54	splitArr = window.location.href.split( "#" )
3583ef3b208b added a modules dir to the build. moved mediafragment.js module inside it. hamidouk parents: diff changeset	55	history.replaceState( {}, "", splitArr[0] + "#t=" + this._Popcorn.currentTime().toFixed( 2 ) );
3583ef3b208b added a modules dir to the build. moved mediafragment.js module inside it. hamidouk parents: diff changeset	56	};
3583ef3b208b added a modules dir to the build. moved mediafragment.js module inside it. hamidouk parents: diff changeset	57
3583ef3b208b added a modules dir to the build. moved mediafragment.js module inside it. hamidouk parents: diff changeset	58
587 cd051898866e implemented hashchange event handler. hamidouk parents: 466 diff changeset	59	IriSP.MediaFragment.prototype.updateAnnotation = function(annotationId) {
466 d54cf60bb842 annotation requests and timecode request now both work. hamidouk parents: 462 diff changeset	60	var _this = this;
d54cf60bb842 annotation requests and timecode request now both work. hamidouk parents: 462 diff changeset	61	this.mutex = true;
d54cf60bb842 annotation requests and timecode request now both work. hamidouk parents: 462 diff changeset	62
462 3583ef3b208b added a modules dir to the build. moved mediafragment.js module inside it. hamidouk parents: diff changeset	63	var history = window.history;
3583ef3b208b added a modules dir to the build. moved mediafragment.js module inside it. hamidouk parents: diff changeset	64	if ( !history.pushState ) {
3583ef3b208b added a modules dir to the build. moved mediafragment.js module inside it. hamidouk parents: diff changeset	65	return false;
3583ef3b208b added a modules dir to the build. moved mediafragment.js module inside it. hamidouk parents: diff changeset	66	}
3583ef3b208b added a modules dir to the build. moved mediafragment.js module inside it. hamidouk parents: diff changeset	67
3583ef3b208b added a modules dir to the build. moved mediafragment.js module inside it. hamidouk parents: diff changeset	68	splitArr = window.location.href.split( "#" )
3583ef3b208b added a modules dir to the build. moved mediafragment.js module inside it. hamidouk parents: diff changeset	69	history.replaceState( {}, "", splitArr[0] + "#a=" + annotationId);
3583ef3b208b added a modules dir to the build. moved mediafragment.js module inside it. hamidouk parents: diff changeset	70
466 d54cf60bb842 annotation requests and timecode request now both work. hamidouk parents: 462 diff changeset	71	window.setTimeout(function() { _this.mutex = false }, 50);
462 3583ef3b208b added a modules dir to the build. moved mediafragment.js module inside it. hamidouk parents: diff changeset	72	};
3583ef3b208b added a modules dir to the build. moved mediafragment.js module inside it. hamidouk parents: diff changeset	73
3583ef3b208b added a modules dir to the build. moved mediafragment.js module inside it. hamidouk parents: diff changeset	74	// lookup and seek to the beginning of an annotation
587 cd051898866e implemented hashchange event handler. hamidouk parents: 466 diff changeset	75	IriSP.MediaFragment.prototype.lookupAnnotation = function(annotationId) {
cd051898866e implemented hashchange event handler. hamidouk parents: 466 diff changeset	76	var _this = this;
cd051898866e implemented hashchange event handler. hamidouk parents: 466 diff changeset	77	this.mutex = true;
cd051898866e implemented hashchange event handler. hamidouk parents: 466 diff changeset	78
462 3583ef3b208b added a modules dir to the build. moved mediafragment.js module inside it. hamidouk parents: diff changeset	79	var annotation = undefined;
3583ef3b208b added a modules dir to the build. moved mediafragment.js module inside it. hamidouk parents: diff changeset	80	var annotations = this._serializer._data.annotations;
3583ef3b208b added a modules dir to the build. moved mediafragment.js module inside it. hamidouk parents: diff changeset	81
3583ef3b208b added a modules dir to the build. moved mediafragment.js module inside it. hamidouk parents: diff changeset	82	var i;
3583ef3b208b added a modules dir to the build. moved mediafragment.js module inside it. hamidouk parents: diff changeset	83	for (i = 0; i < annotations.length; i++) {
3583ef3b208b added a modules dir to the build. moved mediafragment.js module inside it. hamidouk parents: diff changeset	84	if (annotations[i].id === annotationId) {
3583ef3b208b added a modules dir to the build. moved mediafragment.js module inside it. hamidouk parents: diff changeset	85	annotation = annotations[i];
3583ef3b208b added a modules dir to the build. moved mediafragment.js module inside it. hamidouk parents: diff changeset	86	break;
3583ef3b208b added a modules dir to the build. moved mediafragment.js module inside it. hamidouk parents: diff changeset	87	}
3583ef3b208b added a modules dir to the build. moved mediafragment.js module inside it. hamidouk parents: diff changeset	88	}
3583ef3b208b added a modules dir to the build. moved mediafragment.js module inside it. hamidouk parents: diff changeset	89
3583ef3b208b added a modules dir to the build. moved mediafragment.js module inside it. hamidouk parents: diff changeset	90	if (typeof(annotation) !== "undefined") {
3583ef3b208b added a modules dir to the build. moved mediafragment.js module inside it. hamidouk parents: diff changeset	91	this._Popcorn.currentTime(annotation.begin / 1000);
3583ef3b208b added a modules dir to the build. moved mediafragment.js module inside it. hamidouk parents: diff changeset	92	}
587 cd051898866e implemented hashchange event handler. hamidouk parents: 466 diff changeset	93
cd051898866e implemented hashchange event handler. hamidouk parents: 466 diff changeset	94	window.setTimeout(function() { _this.mutex = false }, 50);
462 3583ef3b208b added a modules dir to the build. moved mediafragment.js module inside it. hamidouk parents: diff changeset	95	};

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