Ticket #4687: 4687_2.patch

_source/plugins/wysiwygarea/plugin.js

@@ -644 +644 @@
         // Fixing Firefox 'Back-Forward Cache' break design mode. (#4514)
         if( CKEDITOR.env.gecko )
         {
-                var topBody = new CKEDITOR.dom.element( window.top.document.body );
-                topBody.setAttribute( 'onpageshow', topBody.getAttribute( 'onpageshow' ) 
-                                + ';event.persisted && CKEDITOR.tools.callFunction(' +
-                                CKEDITOR.tools.addFunction( function()
-                                {
-                                        var allInstances = CKEDITOR.instances,
-                                                editor,
-                                                doc;
-                                        for( var i in allInstances )
-                                        {
-                                                editor = allInstances[ i ];
-                                                doc = editor.document;
-                                                if( doc )
-                                                {
-                                                        doc.$.designMode = 'off';
-                                                        doc.$.designMode = 'on';
-                                                }
-                                        }
-                                } ) + ')' );
-        }
-})();
+                var topWin = window.top;
+
+                ( function ()
+                {
+                        var topBody = topWin.document.body;
+
+                        if( !topBody )
+                                topWin.addEventListener( 'load', arguments.callee, false );
+                        else
+                        {
+                                topBody.setAttribute( 'onpageshow', topBody.getAttribute( 'onpageshow' )
+                                                + ';event.persisted && CKEDITOR.tools.callFunction(' +
+                                                CKEDITOR.tools.addFunction( function()
+                                                {
+                                                        var allInstances = CKEDITOR.instances,
+                                                                editor,
+                                                                doc;
+                                                        for( var i in allInstances )
+                                                        {
+                                                                editor = allInstances[ i ];
+                                                                doc = editor.document;
+                                                                if( doc )
+                                                                {
+                                                                        doc.$.designMode = 'off';
+                                                                        doc.$.designMode = 'on';
+                                                                }
+                                                        }
+                                                } ) + ')' );
+                        }
+                } )();
 
+        }
+})();
+
 /**
  * Disables the ability of resize objects (image and tables) in the editing
  * area.