1 /* mediafragment module */

     2 

     3 IriSP.MediaFragment = function(Popcorn, config, Serializer) {

     4   IriSP.Module.call(this, Popcorn, config, Serializer);

     5 

     6   this._Popcorn.listen( "loadedmetadata", IriSP.wrap(this, IriSP.MediaFragment.advanceTime));

     7 //  this._Popcorn.listen( "pause", IriSP.wrap(this, IriSP.MediaFragment.updateTime));

     8 //  this._Popcorn.listen( "seeked", IriSP.wrap(this, IriSP.MediaFragment.updateTime));

     9   this._Popcorn.listen( "IriSP.PolemicTweet.click", IriSP.wrap(this, IriSP.MediaFragment.updateAnnotation));

    10   this._Popcorn.listen( "IriSP.SegmentsWidget.click", IriSP.wrap(this, IriSP.MediaFragment.updateAnnotation));

    11 };

    12 

    13 IriSP.MediaFragment.advanceTime = function() {

    14              var url = window.location.href;

    15 

    16               if ( url.split( "#" )[ 1 ] != null ) {

    17                   pageoffset = url.split( "#" )[1];

    18 

    19                   if ( pageoffset.substring(0, 2) === "t=") {

    20                     // timecode 

    21                     if ( pageoffset.substring( 2 ) != null ) {

    22                     var offsettime = pageoffset.substring( 2 );

    23                     this._Popcorn.currentTime( parseFloat( offsettime ) );

    24                     }

    25                   } else if ( pageoffset.substring(0, 2) === "a=") {

    26                     // annotation

    27                     var annotationId = pageoffset.substring( 2 );

    28 

    29                     // there's no better way than that because

    30                     // of possible race conditions

    31                     this._serializer.sync(IriSP.wrap(this, function() {

    32                           IriSP.MediaFragment.lookupAnnotation.call(this, annotationId); 

    33                           }));

    34                   }

    35               }

    36 };

    37 

    38 IriSP.MediaFragment.updateTime = function() {

    39   var history = window.history;

    40   if ( !history.pushState ) {

    41     return false;

    42   }

    43   

    44   splitArr = window.location.href.split( "#" )

    45   history.replaceState( {}, "", splitArr[0] + "#t=" + this._Popcorn.currentTime().toFixed( 2 ) );

    46 };

    47 

    48 

    49 IriSP.MediaFragment.updateAnnotation = function(annotationId) {

    50   var history = window.history;

    51   if ( !history.pushState ) {

    52     return false;

    53   }

    54   

    55   splitArr = window.location.href.split( "#" )

    56   history.replaceState( {}, "", splitArr[0] + "#a=" + annotationId);

    57  

    58 };

    59 

    60 // lookup and seek to the beginning of an annotation

    61 IriSP.MediaFragment.lookupAnnotation = function(annotationId) {

    62   var annotation = undefined;

    63   var annotations = this._serializer._data.annotations;

    64 

    65   var i;

    66   for (i = 0; i < annotations.length; i++) {

    67       if (annotations[i].id === annotationId) {

    68         annotation = annotations[i];

    69         break;

    70       }

    71   }

    72 

    73   if (typeof(annotation) !== "undefined") {

    74     this._Popcorn.currentTime(annotation.begin / 1000);

    75   }

    76 };