1 line
12 KiB
JavaScript
1 line
12 KiB
JavaScript
webshims.register("track",function(a,b,c,d){"use strict";function e(a,c,e){3!=arguments.length&&b.error("wrong arguments.length for VTTCue.constructor"),this.startTime=a,this.endTime=c,this.text=e,this.onenter=null,this.onexit=null,this.pauseOnExit=!1,this.track=null,this.id=null,this.getCueAsHTML=function(){var a,b="",c="";return function(){var e,g;if(a||(a=d.createDocumentFragment()),b!=this.text)for(b=this.text,c=f.parseCueTextToHTML(b),t.innerHTML=c,e=0,g=t.childNodes.length;g>e;e++)a.appendChild(t.childNodes[e].cloneNode(!0));return a.cloneNode(!0)}}()}var f=b.mediaelement,g=((new Date).getTime(),{subtitles:1,captions:1,descriptions:1}),h=a("<track />"),i=b.support,j=i.ES5&&i.objectAccessor,k=function(a){var c={};return a.addEventListener=function(a,d){c[a]&&b.error("always use $.on to the shimed event: "+a+" already bound fn was: "+c[a]+" your fn was: "+d),c[a]=d},a.removeEventListener=function(a,d){c[a]&&c[a]!=d&&b.error("always use $.on/$.off to the shimed event: "+a+" already bound fn was: "+c[a]+" your fn was: "+d),c[a]&&delete c[a]},a},l={getCueById:function(a){for(var b=null,c=0,d=this.length;d>c;c++)if(this[c].id===a){b=this[c];break}return b}},m={0:"disabled",1:"hidden",2:"showing"},n={shimActiveCues:null,_shimActiveCues:null,activeCues:null,cues:null,kind:"subtitles",label:"",language:"",id:"",mode:"disabled",oncuechange:null,toString:function(){return"[object TextTrack]"},addCue:function(a){if(this.cues){var c=this.cues[this.cues.length-1];if(c&&c.startTime>a.startTime)return void b.error("cue startTime higher than previous cue's startTime")}else this.cues=f.createCueList();a.startTime>=a.endTime&&webshim.error("startTime >= endTime of cue: "+a.text),a.track&&a.track.removeCue&&a.track.removeCue(a),a.track=this,this.cues.push(a)},removeCue:function(a){var c=this.cues||[],d=0,e=c.length;if(a.track!=this)return void b.error("cue not part of track");for(;e>d;d++)if(c[d]===a){c.splice(d,1),a.track=null;break}return a.track?void b.error("cue not part of track"):void 0}},o=["kind","label","srclang"],p={srclang:"language"},q=function(c,d){var e,f,g=!1,h=[],i=[],j=[];if(c||(c=b.data(this,"mediaelementBase")||b.data(this,"mediaelementBase",{})),d||(c.blockTrackListUpdate=!0,d=a.prop(this,"textTracks"),c.blockTrackListUpdate=!1),clearTimeout(c.updateTrackListTimer),a("track",this).each(function(){var b=a.prop(this,"track");j.push(b),-1==d.indexOf(b)&&i.push(b)}),c.scriptedTextTracks)for(e=0,f=c.scriptedTextTracks.length;f>e;e++)j.push(c.scriptedTextTracks[e]),-1==d.indexOf(c.scriptedTextTracks[e])&&i.push(c.scriptedTextTracks[e]);for(e=0,f=d.length;f>e;e++)-1==j.indexOf(d[e])&&h.push(d[e]);if(h.length||i.length){for(d.splice(0),e=0,f=j.length;f>e;e++)d.push(j[e]);for(e=0,f=h.length;f>e;e++)a([d]).triggerHandler(a.Event({type:"removetrack",track:h[e]}));for(e=0,f=i.length;f>e;e++)a([d]).triggerHandler(a.Event({type:"addtrack",track:i[e]}));(c.scriptedTextTracks||h.length)&&a(this).triggerHandler("updatetrackdisplay")}for(e=0,f=d.length;f>e;e++)d[e].__wsmode!=d[e].mode&&(d[e].__wsmode=d[e].mode,g=!0);g&&a([d]).triggerHandler("change")},r=function(c,d){d||(d=b.data(c,"trackData")),d&&!d.isTriggering&&(d.isTriggering=!0,setTimeout(function(){a(c).closest("audio, video").triggerHandler("updatetrackdisplay"),d.isTriggering=!1},9))},s=function(){var c={subtitles:{subtitles:1,captions:1},descriptions:{descriptions:1},chapters:{chapters:1}};return c.captions=c.subtitles,function(d){var e,f,g=a.prop(d,"default");return g&&"metadata"!=(e=a.prop(d,"kind"))&&(f=a(d).parent().find("track[default]").filter(function(){return!!c[e][a.prop(this,"kind")]})[0],f!=d&&(g=!1,b.error("more than one default track of a specific kind detected. Fall back to default = false"))),g}}(),t=a("<div />")[0];c.VTTCue=e,c.TextTrackCue=function(){b.error("Use VTTCue constructor instead of abstract TextTrackCue constructor."),e.apply(this,arguments)},c.TextTrackCue.prototype=e.prototype,f.createCueList=function(){return a.extend([],l)},f.parseCueTextToHTML=function(){var a=/(<\/?[^>]+>)/gi,b=/^(?:c|v|ruby|rt|b|i|u)/,c=/\<\s*\//,d=function(a,b,d,e){var f;return c.test(e)?f="</"+a+">":(d.splice(0,1),f="<"+a+" "+b+'="'+d.join(" ").replace(/\"/g,""")+'">'),f},e=function(a){var c=a.replace(/[<\/>]+/gi,"").split(/[\s\.]+/);return c[0]&&(c[0]=c[0].toLowerCase(),b.test(c[0])?"c"==c[0]?a=d("span","class",c,a):"v"==c[0]&&(a=d("q","title",c,a)):a=""),a};return function(b){return b.replace(a,e)}}();var u=function(b){var c=b+"",d=this.getAttribute("begin")||"",e=this.getAttribute("end")||"",f=a.trim(a.text(this));return/\./.test(d)||(d+=".000"),/\./.test(e)||(e+=".000"),c+="\n",c+=d+" --> "+e+"\n",c+=f},v=function(b){return b=a.parseXML(b)||[],a(b).find("[begin][end]").map(u).get().join("\n\n")||""},w=0;f.loadTextTrack=function(c,d,e,h){var i="play playing loadedmetadata loadstart",j=e.track,k=function(){var g,h,l,m="disabled"==j.mode,n=!(!(a.prop(c,"readyState")>0||2==a.prop(c,"networkState"))&&a.prop(c,"paused")),o=(!m||n)&&a.attr(d,"src")&&a.prop(d,"src");if(o&&(a(c).off(i,k).off("updatetrackdisplay",k),!e.readyState)){g=function(){w--,e.readyState=3,j.cues=null,j.activeCues=j.shimActiveCues=j._shimActiveCues=null,a(d).triggerHandler("error")},e.readyState=1;try{j.cues=f.createCueList(),j.activeCues=j.shimActiveCues=j._shimActiveCues=f.createCueList(),w++,l=function(){h=a.ajax({dataType:"text",url:o,success:function(i){w--;var k=h.getResponseHeader("content-type")||"";k.indexOf("application/xml")?k.indexOf("text/vtt")&&b.error("set the mime-type of your WebVTT files to text/vtt. see: http://dev.w3.org/html5/webvtt/#text/vtt"):i=v(i),f.parseCaptions(i,j,function(b){b&&"length"in b?(e.readyState=2,a(d).triggerHandler("load"),a(c).triggerHandler("updatetrackdisplay")):g()})},error:g})},m?setTimeout(l,2*w):l()}catch(p){g(),b.error(p)}}};e.readyState=0,j.shimActiveCues=null,j._shimActiveCues=null,j.activeCues=null,j.cues=null,a(c).on(i,k),h?(j.mode=g[j.kind]?"showing":"hidden",k()):a(c).on("updatetrackdisplay",k)},f.createTextTrack=function(c,d){var e,g;return d.nodeName&&(g=b.data(d,"trackData"),g&&(r(d,g),e=g.track)),e||(e=k(b.objectCreate(n)),j||o.forEach(function(b){var c=a.prop(d,b);c&&(e[p[b]||b]=c)}),d.nodeName?(j&&o.forEach(function(c){b.defineProperty(e,p[c]||c,{get:function(){return a.prop(d,c)}})}),e.id=a(d).prop("id"),g=b.data(d,"trackData",{track:e}),f.loadTextTrack(c,d,g,s(d))):(j&&o.forEach(function(a){b.defineProperty(e,p[a]||a,{value:d[a],writeable:!1})}),e.cues=f.createCueList(),e.activeCues=e._shimActiveCues=e.shimActiveCues=f.createCueList(),e.mode="hidden",e.readyState=2),"subtitles"!=e.kind||e.language||b.error("you must provide a language for track in subtitles state"),e.__wsmode=e.mode,b.defineProperty(e,"_wsUpdateMode",{value:function(){a(c).triggerHandler("updatetrackdisplay")},enumerable:!1})),e},a.propHooks.mode||(a.propHooks.mode={set:function(a,b){return a.mode=b,a._wsUpdateMode&&a._wsUpdateMode.call&&a._wsUpdateMode(),a.mode}}),f.parseCaptionChunk=function(){var a=/^(\d{2})?:?(\d{2}):(\d{2})\.(\d+)\s+\-\-\>\s+(\d{2})?:?(\d{2}):(\d{2})\.(\d+)\s*(.*)/,c=/^(DEFAULTS|DEFAULT)\s+\-\-\>\s+(.*)/g,d=/^(STYLE|STYLES)\s+\-\-\>\s*\n([\s\S]*)/g,f=/^(COMMENT|COMMENTS)\s+\-\-\>\s+(.*)/g,g=/^(\d{2})?:?(\d{2}):(\d{2})[\.\,](\d+)\s+\-\-\>\s+(\d{2})?:?(\d{2}):(\d{2})[\.\,](\d+)\s*(.*)/;return function(h){var i,j,k,l,m,n,o,p,q;if(c.exec(h)||f.exec(h)||d.exec(h))return null;for(i=h.split(/\n/g);!i[0].replace(/\s+/gi,"").length&&i.length>0;)i.shift();for(i[0].match(/^\s*[a-z0-9-\_]+\s*$/gi)&&(o=String(i.shift().replace(/\s*/gi,""))),n=0;n<i.length;n++){var r=i[n];((p=a.exec(r))||(p=g.exec(r)))&&(m=p.slice(1),j=parseInt(60*(m[0]||0)*60,10)+parseInt(60*(m[1]||0),10)+parseInt(m[2]||0,10)+parseFloat("0."+(m[3]||0)),k=parseInt(60*(m[4]||0)*60,10)+parseInt(60*(m[5]||0),10)+parseInt(m[6]||0,10)+parseFloat("0."+(m[7]||0))),i=i.slice(0,n).concat(i.slice(n+1));break}return j||k?(l=i.join("\n"),q=new e(j,k,l),o&&(q.id=o),q):(b.warn("couldn't extract time information: "+[j,k,i.join("\n"),o].join(" ; ")),null)}}(),f.parseCaptions=function(a,c,d){var e,g,h,i,j;f.createCueList(),a?(h=/^WEBVTT(\s*FILE)?/gi,g=function(k,l){for(;l>k;k++)if(e=a[k],h.test(e)?j=!0:e.replace(/\s*/gi,"").length&&(e=f.parseCaptionChunk(e,k),e&&c.addCue(e)),i<(new Date).getTime()-30){k++,setTimeout(function(){i=(new Date).getTime(),g(k,l)},90);break}k>=l&&(j||b.error("please use WebVTT format. This is the standard"),d(c.cues))},a=a.replace(/\r\n/g,"\n"),setTimeout(function(){a=a.replace(/\r/g,"\n"),setTimeout(function(){i=(new Date).getTime(),a=a.split(/\n\n+/g),g(0,a.length)},9)},9)):b.error("Required parameter captionData not supplied.")},f.createTrackList=function(c,d){return d=d||b.data(c,"mediaelementBase")||b.data(c,"mediaelementBase",{}),d.textTracks||(d.textTracks=[],b.defineProperties(d.textTracks,{onaddtrack:{value:null},onremovetrack:{value:null},onchange:{value:null},getTrackById:{value:function(a){for(var b=null,c=0;c<d.textTracks.length;c++)if(a==d.textTracks[c].id){b=d.textTracks[c];break}return b}}}),k(d.textTracks),a(c).on("updatetrackdisplay",function(){for(var b,c=0;c<d.textTracks.length;c++)b=d.textTracks[c],b.__wsmode!=b.mode&&(b.__wsmode=b.mode,a([d.textTracks]).triggerHandler("change"))})),d.textTracks},i.track||(b.defineNodeNamesBooleanProperty(["track"],"default"),b.reflectProperties(["track"],["srclang","label"]),b.defineNodeNameProperties("track",{src:{reflect:!0,propType:"src"}})),b.defineNodeNameProperties("track",{kind:{attr:i.track?{set:function(a){var c=b.data(this,"trackData");this.setAttribute("data-kind",a),c&&(c.attrKind=a)},get:function(){var a=b.data(this,"trackData");return a&&"attrKind"in a?a.attrKind:this.getAttribute("kind")}}:{},reflect:!0,propType:"enumarated",defaultValue:"subtitles",limitedTo:["subtitles","captions","descriptions","chapters","metadata"]}}),a.each(o,function(c,d){var e=p[d]||d;b.onNodeNamesPropertyModify("track",d,function(){var c=b.data(this,"trackData");c&&("kind"==d&&r(this,c),j||(c.track[e]=a.prop(this,d)))})}),b.onNodeNamesPropertyModify("track","src",function(c){if(c){var d,e=b.data(this,"trackData");e&&(d=a(this).closest("video, audio"),d[0]&&f.loadTextTrack(d,this,e))}}),b.defineNodeNamesProperties(["track"],{ERROR:{value:3},LOADED:{value:2},LOADING:{value:1},NONE:{value:0},readyState:{get:function(){return(b.data(this,"trackData")||{readyState:0}).readyState},writeable:!1},track:{get:function(){return f.createTextTrack(a(this).closest("audio, video")[0],this)},writeable:!1}},"prop"),b.defineNodeNamesProperties(["audio","video"],{textTracks:{get:function(){var a=this,c=b.data(a,"mediaelementBase")||b.data(a,"mediaelementBase",{}),d=f.createTrackList(a,c);return c.blockTrackListUpdate||q.call(a,c,d),d},writeable:!1},addTextTrack:{value:function(a,c,d){var e=f.createTextTrack(this,{kind:h.prop("kind",a||"").prop("kind"),label:c||"",srclang:d||""}),g=b.data(this,"mediaelementBase")||b.data(this,"mediaelementBase",{});return g.scriptedTextTracks||(g.scriptedTextTracks=[]),g.scriptedTextTracks.push(e),q.call(this),e}}},"prop");var x=function(c){if(a(c.target).is("audio, video")){var d=b.data(c.target,"mediaelementBase");d&&(clearTimeout(d.updateTrackListTimer),d.updateTrackListTimer=setTimeout(function(){q.call(c.target,d)},0))}},y=function(a,b){return b.readyState||a.readyState},z=function(a){a.originalEvent&&a.stopImmediatePropagation()},A=function(){if(b.implement(this,"track")){var c,d=this.track;d&&(b.bugs.track||!d.mode&&!y(this,d)||(a.prop(this,"track").mode=m[d.mode]||d.mode),c=a.prop(this,"kind"),d.mode="string"==typeof d.mode?"disabled":0,this.kind="metadata",a(this).attr({kind:c})),a(this).on("load error",z)}};b.addReady(function(c,d){var e=d.filter("video, audio, track").closest("audio, video");a("video, audio",c).add(e).each(function(){q.call(this)}).on("emptied updatetracklist wsmediareload",x).each(function(){if(i.track){var c=a.prop(this,"textTracks"),d=this.textTracks;c.length!=d.length&&b.warn("textTracks couldn't be copied"),a("track",this).each(A)}}),e.each(function(){var a=this,c=b.data(a,"mediaelementBase");c&&(clearTimeout(c.updateTrackListTimer),c.updateTrackListTimer=setTimeout(function(){q.call(a,c)},9))})}),i.texttrackapi&&a("video, audio").trigger("trackapichange")}); |