Ticket #27389: 27389-unbind.patch

src/wp-includes/js/mce-view.js

@@ -41 +41 @@
                                         doc = editor.getDoc();
                                         $( doc ).find( '[data-wpview-text="' + this.encodedText + '"]' ).each(function (i, elem) {
                                                 var node = $( elem );
-                                                node.html( html );
+                                                // The <ins> is used to mark the end of the wrapper div. Needed when comparing
+                                                // the content as string for preventing extra undo levels.
+                                                node.html( html ).append( '<ins data-wpview-end="1"></ins>' );
                                                 $( self ).trigger( 'ready', elem );
                                         });
                                 }
@@ -93 +95 @@
                 },
 
                 /**
+                 * wp.mce.views.unbind( editor )
+                 *
+                 * The editor DOM is being rebuilt.
+                 * Fire an event for DOM cleanup for the passed TinyMCE instance.
+                 */
+                unbind: function( editor ) {
+                        // fire event?
+                },
+
+                /**
                  * toViews( content )
                  * Scans a `content` string for each view's pattern, replacing any
                  * matches with wrapper elements, and creates a new instance for

src/wp-includes/js/tinymce/plugins/wpview/plugin.js

@@ -80 +80 @@
                         'contenteditable': 'true'
                 }, getViewText( viewNode ) );
 
-                viewNode.appendChild( clipboard );
+                // Prepend inside the wrapper
+                viewNode.insertBefore( clipboard, viewNode.firstChild );
 
                 // Both of the following are necessary to prevent manipulating the selection/focus
-                editor.dom.bind( clipboard, 'beforedeactivate focusin focusout', _stop );
-                editor.dom.bind( selected, 'beforedeactivate focusin focusout', _stop );
+                dom.bind( clipboard, 'beforedeactivate focusin focusout', _stop );
+                dom.bind( selected, 'beforedeactivate focusin focusout', _stop );
 
                 // Make sure that the editor is focused.
                 // It is possible that the editor is not focused when the mouse event fires
@@ -140 +141 @@
                 return;
         }
 
+        function emptyViews( content ) {
+                return content.replace(/(<div[^>]+wpview-wrap[^>]+>)[\s\S]+?data-wpview-end[^>]*><\/ins><\/div>/g, '$1</div>' );
+        }
+
         editor.on( 'BeforeAddUndo', function( event ) {
-                if ( selected && ! toRemove ) {
+                if ( event.lastLevel && emptyViews( event.level.content ) === emptyViews( event.lastLevel.content ) ) {
                         event.preventDefault();
                 }
         });
@@ -149 +154 @@
         // When the editor's content changes, scan the new content for
         // matching view patterns, and transform the matches into
         // view wrappers.
-        editor.on( 'BeforeSetContent', function( e ) {
-                if ( ! e.content ) {
+        editor.on( 'BeforeSetContent', function( event ) {
+                if ( ! event.content ) {
                         return;
                 }
 
-                e.content = wp.mce.views.toViews( e.content );
+                if ( ! event.initial ) {
+                        wp.mce.views.unbind( editor );
+                }
+
+                event.content = wp.mce.views.toViews( event.content );
         });
 
         // When the editor's content has been updated and the DOM has been
@@ -162 +171 @@
         editor.on( 'SetContent', function( event ) {
                 var body, padNode;
 
-                // don't (re-)render views if the format of the content is raw
-                // to avoid adding additional undo levels on undo/redo
-                if ( event.format !== 'raw' ) {
-                        wp.mce.views.render();
-                }
+                wp.mce.views.render();
 
                 // Add padding <p> if the noneditable node is last
                 if ( event.load || ! event.set ) {