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<title>[28171] trunk/src/wp-includes/js: Add a compatibility layer in `wp-playlist.js` to avoid VM errors from MediaElement's plugin bridge in the TinyMCE views for playlists by suppressing playback for files whose mime-type is not supported in the user's browser natively.</title>
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<dl class="meta">
<dt>Revision</dt> <dd><a href="http://core.trac.wordpress.org/changeset/28171">28171</a></dd>
<dt>Author</dt> <dd>wonderboymusic</dd>
<dt>Date</dt> <dd>2014-04-20 03:52:57 +0000 (Sun, 20 Apr 2014)</dd>
</dl>

<h3>Log Message</h3>
<pre>Add a compatibility layer in `wp-playlist.js` to avoid VM errors from MediaElement's plugin bridge in the TinyMCE views for playlists by suppressing playback for files whose mime-type is not supported in the user's browser natively.

This is similar to how audio and video shortcodes are handled: file types are whitelisted for native playback.

See <a href="http://core.trac.wordpress.org/ticket/27892">#27892</a>.</pre>

<h3>Modified Paths</h3>
<ul>
<li><a href="#trunksrcwpincludesjsmceviewjs">trunk/src/wp-includes/js/mce-view.js</a></li>
<li><a href="#trunksrcwpincludesjsmediaelementwpmediaelementcss">trunk/src/wp-includes/js/mediaelement/wp-mediaelement.css</a></li>
<li><a href="#trunksrcwpincludesjsmediaelementwpplaylistjs">trunk/src/wp-includes/js/mediaelement/wp-playlist.js</a></li>
</ul>

</div>
<div id="patch">
<h3>Diff</h3>
<a id="trunksrcwpincludesjsmceviewjs"></a>
<div class="modfile"><h4>Modified: trunk/src/wp-includes/js/mce-view.js (28170 => 28171)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/src/wp-includes/js/mce-view.js     2014-04-19 19:44:43 UTC (rev 28170)
+++ trunk/src/wp-includes/js/mce-view.js        2014-04-20 03:52:57 UTC (rev 28171)
</span><span class="lines">@@ -611,7 +611,7 @@
</span><span class="cx">                          metadata: this.data
</span><span class="cx">                  });
</span><span class="cx"> 
</span><del>-                       this.player = p._player;
</del><ins>+                        this.player = p.player;
</ins><span class="cx">           },
</span><span class="cx"> 
</span><span class="cx">          /**
</span></span></pre></div>
<a id="trunksrcwpincludesjsmediaelementwpmediaelementcss"></a>
<div class="modfile"><h4>Modified: trunk/src/wp-includes/js/mediaelement/wp-mediaelement.css (28170 => 28171)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/src/wp-includes/js/mediaelement/wp-mediaelement.css        2014-04-19 19:44:43 UTC (rev 28170)
+++ trunk/src/wp-includes/js/mediaelement/wp-mediaelement.css   2014-04-20 03:52:57 UTC (rev 28171)
</span><span class="lines">@@ -200,4 +200,8 @@
</span><span class="cx">  overflow: hidden;
</span><span class="cx">  text-overflow: ellipsis;
</span><span class="cx">  white-space: nowrap;
</span><ins>+}
+
+.wp-audio-playlist .me-cannotplay span {
+       padding: 5px 15px;
</ins><span class="cx"> }
</span><span class="cx">\ No newline at end of file
</span></span></pre></div>
<a id="trunksrcwpincludesjsmediaelementwpplaylistjs"></a>
<div class="modfile"><h4>Modified: trunk/src/wp-includes/js/mediaelement/wp-playlist.js (28170 => 28171)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/src/wp-includes/js/mediaelement/wp-playlist.js     2014-04-19 19:44:43 UTC (rev 28170)
+++ trunk/src/wp-includes/js/mediaelement/wp-playlist.js        2014-04-20 03:52:57 UTC (rev 28171)
</span><span class="lines">@@ -7,6 +7,7 @@
</span><span class="cx">          initialize : function (options) {
</span><span class="cx">                  this.index = 0;
</span><span class="cx">                  this.settings = {};
</span><ins>+                       this.compatMode = $( 'body' ).hasClass( 'wp-admin' ) && $( '#content_ifr' ).length;
</ins><span class="cx">                   this.data = options.metadata || $.parseJSON( this.$('script').html() );
</span><span class="cx">                  this.playerNode = this.$( this.data.type );
</span><span class="cx"> 
</span><span class="lines">@@ -26,7 +27,9 @@
</span><span class="cx">                          this.renderTracks();
</span><span class="cx">                  }
</span><span class="cx"> 
</span><del>-                       this.playerNode.attr( 'src', this.current.get( 'src' ) );
</del><ins>+                        if ( this.isCompatibleSrc() ) {
+                               this.playerNode.attr( 'src', this.current.get( 'src' ) );
+                       }
</ins><span class="cx"> 
</span><span class="cx">                  _.bindAll( this, 'bindPlayer', 'bindResetPlayer', 'setPlayer', 'ended', 'clickTrack' );
</span><span class="cx"> 
</span><span class="lines">@@ -38,34 +41,58 @@
</span><span class="cx">          },
</span><span class="cx"> 
</span><span class="cx">          bindPlayer : function (mejs) {
</span><del>-                       this.player = mejs;
-                       this.player.addEventListener( 'ended', this.ended );
</del><ins>+                        this.mejs = mejs;
+                       this.mejs.addEventListener( 'ended', this.ended );
</ins><span class="cx">           },
</span><span class="cx"> 
</span><span class="cx">          bindResetPlayer : function (mejs) {
</span><span class="cx">                  this.bindPlayer( mejs );
</span><del>-                       this.playCurrentSrc();
</del><ins>+                        if ( this.isCompatibleSrc() ) {
+                               this.playCurrentSrc();
+                       }
</ins><span class="cx">           },
</span><span class="cx"> 
</span><del>-               setPlayer: function () {
-                       if ( this._player ) {
-                               this._player.pause();
-                               this._player.remove();
</del><ins>+                isCompatibleSrc: function () {
+                       var testNode;
+
+                       if ( this.compatMode ) {
+                               testNode = $( '<span><source type="' + this.current.get( 'type' ) + '" /></span>' );
+
+                               if ( ! wp.media.mixin.isCompatible( testNode ) ) {
+                                       this.playerNode.removeAttr( 'src' );
+                                       this.playerNode.removeAttr( 'poster' );
+                                       return;
+                               }
+                       }
+
+                       return true;
+               },
+
+               setPlayer: function (force) {
+                       if ( this.player ) {
+                               this.player.pause();
+                               this.player.remove();
</ins><span class="cx">                           this.playerNode = this.$( this.data.type );
</span><del>-                               this.playerNode.attr( 'src', this.current.get( 'src' ) );
</del><ins>+                        }
+
+                       if (force) {
+                               if ( this.isCompatibleSrc() ) {
+                                       this.playerNode.attr( 'src', this.current.get( 'src' ) );
+                               }
</ins><span class="cx">                           this.settings.success = this.bindResetPlayer;
</span><span class="cx">                  }
</span><ins>+
</ins><span class="cx">                   /**
</span><span class="cx">                   * This is also our bridge to the outside world
</span><span class="cx">                   */
</span><del>-                       this._player = new MediaElementPlayer( this.playerNode.get(0), this.settings );
</del><ins>+                        this.player = new MediaElementPlayer( this.playerNode.get(0), this.settings );
</ins><span class="cx">           },
</span><span class="cx"> 
</span><span class="cx">          playCurrentSrc : function () {
</span><span class="cx">                  this.renderCurrent();
</span><del>-                       this.player.setSrc( this.playerNode.attr( 'src' ) );
-                       this.player.load();
-                       this.player.play();
</del><ins>+                        this.mejs.setSrc( this.playerNode.attr( 'src' ) );
+                       this.mejs.load();
+                       this.mejs.play();
</ins><span class="cx">           },
</span><span class="cx"> 
</span><span class="cx">          renderCurrent : function () {
</span><span class="lines">@@ -134,14 +161,14 @@
</span><span class="cx">          },
</span><span class="cx"> 
</span><span class="cx">          loadCurrent : function () {
</span><del>-                       var last = this.playerNode.attr( 'src' ).split('.').pop(),
</del><ins>+                        var last = this.playerNode.attr( 'src' ) && this.playerNode.attr( 'src' ).split('.').pop(),
</ins><span class="cx">                           current = this.current.get( 'src' ).split('.').pop();
</span><span class="cx"> 
</span><del>-                       this.player.pause();
</del><ins>+                        this.mejs && this.mejs.pause();
</ins><span class="cx"> 
</span><span class="cx">                  if ( last !== current ) {
</span><del>-                               this.setPlayer();
-                       } else {
</del><ins>+                                this.setPlayer( true );
+                       } else if ( this.isCompatibleSrc() ) {
</ins><span class="cx">                           this.playerNode.attr( 'src', this.current.get( 'src' ) );
</span><span class="cx">                          this.playCurrentSrc();
</span><span class="cx">                  }
</span></span></pre>
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