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<title>[29615] trunk/src: MCE View sandboxes:</title>
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<dl class="meta">
<dt>Revision</dt> <dd><a href="http://core.trac.wordpress.org/changeset/29615">29615</a></dd>
<dt>Author</dt> <dd>wonderboymusic</dd>
<dt>Date</dt> <dd>2014-08-26 04:45:54 +0000 (Tue, 26 Aug 2014)</dd>
</dl>

<h3>Log Message</h3>
<pre>MCE View sandboxes:

* Use a `MutationObserver` to listen to the `body` class of the parent editor frame.
* In `wpview_media_sandbox_styles()`, only return the MEjs stylesheets.
* In `wp_ajax_parse_media_shortcode()` and `wp_ajax_parse_embed()`, return an object instead of an HTML blob to allow passing `body` and `head` separately      

Props avryl, azaozz.
Fixes <a href="http://core.trac.wordpress.org/ticket/29048">#29048</a>.</pre>

<h3>Modified Paths</h3>
<ul>
<li><a href="#trunksrcwpadminincludesajaxactionsphp">trunk/src/wp-admin/includes/ajax-actions.php</a></li>
<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="#trunksrcwpincludesjstinymcepluginswpviewpluginjs">trunk/src/wp-includes/js/tinymce/plugins/wpview/plugin.js</a></li>
<li><a href="#trunksrcwpincludesmediaphp">trunk/src/wp-includes/media.php</a></li>
</ul>

</div>
<div id="patch">
<h3>Diff</h3>
<a id="trunksrcwpadminincludesajaxactionsphp"></a>
<div class="modfile"><h4>Modified: trunk/src/wp-admin/includes/ajax-actions.php (29614 => 29615)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/src/wp-admin/includes/ajax-actions.php     2014-08-26 04:36:53 UTC (rev 29614)
+++ trunk/src/wp-admin/includes/ajax-actions.php        2014-08-26 04:45:54 UTC (rev 29615)
</span><span class="lines">@@ -2705,7 +2705,9 @@
</span><span class="cx">          ) );
</span><span class="cx">  }
</span><span class="cx"> 
</span><del>-       wp_send_json_success( $parsed );
</del><ins>+        wp_send_json_success( array(
+               'body' => $parsed
+       ) );
</ins><span class="cx"> }
</span><span class="cx"> 
</span><span class="cx"> function wp_ajax_parse_media_shortcode() {
</span><span class="lines">@@ -2729,19 +2731,21 @@
</span><span class="cx">          ) );
</span><span class="cx">  }
</span><span class="cx"> 
</span><del>-       ob_start();
</del><ins>+        $head = '';
+       $styles = wpview_media_sandbox_styles();
</ins><span class="cx"> 
</span><del>-       $styles = wpview_media_sandbox_styles();
</del><span class="cx">   foreach ( $styles as $style ) {
</span><del>-               printf( '<link rel="stylesheet" href="%s"/>', $style );
</del><ins>+                $head .= '<link type="text/css" rel="stylesheet" href="' . $style . '">';
</ins><span class="cx">   }
</span><span class="cx"> 
</span><del>-       echo $shortcode;
-
</del><span class="cx">   if ( ! empty( $wp_scripts ) ) {
</span><span class="cx">          $wp_scripts->done = array();
</span><span class="cx">  }
</span><span class="cx"> 
</span><ins>+       ob_start();
+
+       echo $shortcode;
+
</ins><span class="cx">   if ( 'playlist' === $_REQUEST['type'] ) {
</span><span class="cx">          wp_underscore_playlist_templates();
</span><span class="cx"> 
</span><span class="lines">@@ -2750,5 +2754,8 @@
</span><span class="cx">          wp_print_scripts( 'wp-mediaelement' );
</span><span class="cx">  }
</span><span class="cx"> 
</span><del>-       wp_send_json_success( ob_get_clean() );
</del><ins>+        wp_send_json_success( array(
+               'head' => $head,
+               'body' => ob_get_clean()
+       ) );
</ins><span class="cx"> }
</span></span></pre></div>
<a id="trunksrcwpincludesjsmceviewjs"></a>
<div class="modfile"><h4>Modified: trunk/src/wp-includes/js/mce-view.js (29614 => 29615)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/src/wp-includes/js/mce-view.js     2014-08-26 04:36:53 UTC (rev 29614)
+++ trunk/src/wp-includes/js/mce-view.js        2014-08-26 04:45:54 UTC (rev 29615)
</span><span class="lines">@@ -123,16 +123,35 @@
</span><span class="cx">                  } );
</span><span class="cx">          },
</span><span class="cx">          /* jshint scripturl: true */
</span><del>-               setIframes: function ( html ) {
-                       var MutationObserver = window.MutationObserver || window.WebKitMutationObserver || window.MozMutationObserver;
</del><ins>+                setIframes: function ( head, body ) {
+                       var MutationObserver = window.MutationObserver || window.WebKitMutationObserver || window.MozMutationObserver,
+                               importStyles = this.type === 'video' || this.type === 'audio' || this.type === 'playlist';
</ins><span class="cx"> 
</span><del>-                       if ( html.indexOf( '<script' ) !== -1 ) {
</del><ins>+                        if ( head || body.indexOf( '<script' ) !== -1 ) {
</ins><span class="cx">                           this.getNodes( function ( editor, node, content ) {
</span><span class="cx">                                  var dom = editor.dom,
</span><ins>+                                               styles = '',
+                                               bodyClasses = editor.getBody().className || '',
</ins><span class="cx">                                           iframe, iframeDoc, i, resize;
</span><span class="cx"> 
</span><span class="cx">                                  content.innerHTML = '';
</span><span class="cx"> 
</span><ins>+                                       if ( importStyles ) {
+                                               if ( ! wp.mce.views.sandboxStyles ) {
+                                                       tinymce.each( dom.$( 'link[rel="stylesheet"]', editor.getDoc().head ), function( link ) {
+                                                               if ( link.href && link.href.indexOf( 'skins/lightgray/content.min.css' ) === -1 &&
+                                                                       link.href.indexOf( 'skins/wordpress/wp-content.css' ) === -1 ) {
+
+                                                                       styles += dom.getOuterHTML( link ) + '\n';
+                                                               }
+                                                       });
+
+                                                       wp.mce.views.sandboxStyles = styles;
+                                               } else {
+                                                       styles = wp.mce.views.sandboxStyles;
+                                               }
+                                       }
+
</ins><span class="cx">                                   // Seems Firefox needs a bit of time to insert/set the view nodes, or the iframe will fail
</span><span class="cx">                                  // especially when switching Text => Visual.
</span><span class="cx">                                  setTimeout( function() {
</span><span class="lines">@@ -156,6 +175,8 @@
</span><span class="cx">                                                  '<html>' +
</span><span class="cx">                                                          '<head>' +
</span><span class="cx">                                                                  '<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />' +
</span><ins>+                                                                       head +
+                                                                       styles +
</ins><span class="cx">                                                                   '<style>' +
</span><span class="cx">                                                                          'html {' +
</span><span class="cx">                                                                                  'background: transparent;' +
</span><span class="lines">@@ -164,13 +185,18 @@
</span><span class="cx">                                                                          '}' +
</span><span class="cx">                                                                          'body#wpview-iframe-sandbox {' +
</span><span class="cx">                                                                                  'background: transparent;' +
</span><del>-                                                                                       'padding: 1px 0;' +
-                                                                                       'margin: -1px 0 0;' +
</del><ins>+                                                                                        'padding: 1px 0 !important;' +
+                                                                                       'margin: -1px 0 0 !important;' +
</ins><span class="cx">                                                                           '}' +
</span><ins>+                                                                               'body#wpview-iframe-sandbox:before,' +
+                                                                               'body#wpview-iframe-sandbox:after {' +
+                                                                                       'display: none;' +
+                                                                                       'content: "";' +
+                                                                               '}' +
</ins><span class="cx">                                                                   '</style>' +
</span><span class="cx">                                                          '</head>' +
</span><del>-                                                               '<body id="wpview-iframe-sandbox">' +
-                                                                       html +
</del><ins>+                                                                '<body id="wpview-iframe-sandbox" class="' + bodyClasses + '">' +
+                                                                       body +
</ins><span class="cx">                                                           '</body>' +
</span><span class="cx">                                                  '</html>'
</span><span class="cx">                                          );
</span><span class="lines">@@ -195,10 +221,16 @@
</span><span class="cx">                                                          setTimeout( resize, i * 700 );
</span><span class="cx">                                                  }
</span><span class="cx">                                          }
</span><ins>+
+                                               if ( importStyles ) {
+                                                       editor.on( 'wp-body-class-change', function() {
+                                                               iframeDoc.body.className = editor.getBody().className;
+                                                       });
+                                               }
</ins><span class="cx">                                   }, 50 );
</span><span class="cx">                          });
</span><span class="cx">                  } else {
</span><del>-                               this.setContent( html );
</del><ins>+                                this.setContent( body );
</ins><span class="cx">                   }
</span><span class="cx">          },
</span><span class="cx">          setError: function( message, dashicon ) {
</span><span class="lines">@@ -560,7 +592,7 @@
</span><span class="cx"> 
</span><span class="cx">                  setNodes: function () {
</span><span class="cx">                          if ( this.parsed ) {
</span><del>-                                       this.setIframes( this.parsed );
</del><ins>+                                        this.setIframes( this.parsed.head, this.parsed.body );
</ins><span class="cx">                           } else {
</span><span class="cx">                                  this.fail();
</span><span class="cx">                          }
</span><span class="lines">@@ -579,7 +611,7 @@
</span><span class="cx">                          .done( function( response ) {
</span><span class="cx">                                  if ( response ) {
</span><span class="cx">                                          self.parsed = response;
</span><del>-                                               self.setIframes( response );
</del><ins>+                                                self.setIframes( response.head, response.body );
</ins><span class="cx">                                   } else {
</span><span class="cx">                                          self.fail( true );
</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 (29614 => 29615)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/src/wp-includes/js/mediaelement/wp-mediaelement.css        2014-08-26 04:36:53 UTC (rev 29614)
+++ trunk/src/wp-includes/js/mediaelement/wp-mediaelement.css   2014-08-26 04:45:54 UTC (rev 29615)
</span><span class="lines">@@ -1,10 +1,3 @@
</span><del>-#wpview-iframe-sandbox {
-       color: #444;
-       font-family: "Open Sans", sans-serif;
-       font-size: 13px;
-       line-height: 1.4em;
-}
-
</del><span class="cx"> .mejs-container {
</span><span class="cx">  clear: both;
</span><span class="cx"> }
</span><span class="lines">@@ -278,4 +271,4 @@
</span><span class="cx"> 
</span><span class="cx"> .wp-audio-playlist .me-cannotplay span {
</span><span class="cx">  padding: 5px 15px;
</span><del>-}
</del><span class="cx">\ No newline at end of file
</span><ins>+}
</ins></span></pre></div>
<a id="trunksrcwpincludesjstinymcepluginswpviewpluginjs"></a>
<div class="modfile"><h4>Modified: trunk/src/wp-includes/js/tinymce/plugins/wpview/plugin.js (29614 => 29615)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/src/wp-includes/js/tinymce/plugins/wpview/plugin.js        2014-08-26 04:36:53 UTC (rev 29614)
+++ trunk/src/wp-includes/js/tinymce/plugins/wpview/plugin.js   2014-08-26 04:45:54 UTC (rev 29615)
</span><span class="lines">@@ -260,7 +260,8 @@
</span><span class="cx"> 
</span><span class="cx">  editor.on( 'init', function() {
</span><span class="cx">          var scrolled = false,
</span><del>-                       selection = editor.selection;
</del><ins>+                        selection = editor.selection,
+                       MutationObserver = window.MutationObserver || window.WebKitMutationObserver;
</ins><span class="cx"> 
</span><span class="cx">          // When a view is selected, ensure content that is being pasted
</span><span class="cx">          // or inserted is added to a text node (instead of the view).
</span><span class="lines">@@ -333,6 +334,16 @@
</span><span class="cx">                          scrolled = false;
</span><span class="cx">                  }
</span><span class="cx">          }, true );
</span><ins>+
+               if ( MutationObserver ) {
+                       new MutationObserver( function() {
+                               editor.fire( 'wp-body-class-change' );
+                       } )
+                       .observe( editor.getBody(), {
+                               attributes: true,
+                               attributeFilter: ['class']
+                       } );
+               }
</ins><span class="cx">   });
</span><span class="cx"> 
</span><span class="cx">  editor.on( 'PreProcess', function( event ) {
</span></span></pre></div>
<a id="trunksrcwpincludesmediaphp"></a>
<div class="modfile"><h4>Modified: trunk/src/wp-includes/media.php (29614 => 29615)</h4>
<pre class="diff"><span>
<span class="info">--- trunk/src/wp-includes/media.php  2014-08-26 04:36:53 UTC (rev 29614)
+++ trunk/src/wp-includes/media.php     2014-08-26 04:45:54 UTC (rev 29615)
</span><span class="lines">@@ -3310,19 +3310,8 @@
</span><span class="cx">  */
</span><span class="cx"> function wpview_media_sandbox_styles() {
</span><span class="cx">          $version = 'ver=' . $GLOBALS['wp_version'];
</span><del>-       $open_sans = "//fonts.googleapis.com/css?family=Open+Sans%3A300italic%2C400italic%2C600italic%2C300%2C400%2C600&subset=latin%2Clatin-ext&ver=$version";
-       $dashicons = includes_url( "css/dashicons.css?$version" );
</del><span class="cx">   $mediaelement = includes_url( "js/mediaelement/mediaelementplayer.min.css?$version" );
</span><span class="cx">          $wpmediaelement = includes_url( "js/mediaelement/wp-mediaelement.css?$version" );
</span><span class="cx"> 
</span><del>-       /**
-        * For use by themes that need to override the styling of MediaElement based previews in the Visual editor.
-        * Not intended for adding editor-style.css. Ideally these styles will be applied by using
-        * the 'seamless' iframe attribute in the future.
-        *
-        * @since 4.0
-        *
-        * @param array The URLs to the stylesheets that will be loaded in the sandbox iframe.
-        */
-       return apply_filters( 'wpview_media_sandbox_styles', array( $open_sans, $dashicons, $mediaelement, $wpmediaelement ) );
</del><ins>+        return array( $mediaelement, $wpmediaelement );
</ins><span class="cx"> }
</span></span></pre>
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