Ticket #7422: 7422_2.patch

_source/plugins/undo/plugin.js

@@ -78 +78 @@
                                                         if ( !event.data.$.ctrlKey && !event.data.$.metaKey )
                                                                 undoManager.type( event );
                                                 });
-                                });
+
+                                        var innerDrag, savedRange;
+                                        var target = editor.document.getBody();
+
+                                        // Event "dragstart" fires only when dragging
+                                        // from inside the own document.
+                                        target.on( 'dragstart', function()
+                                                {
+                                                        innerDrag = 1;
+                                                        editor.fire( 'saveSnapshot' );
+
+                                                        // There's always a "dragend" in accompany with "dragstart".
+                                                        target.on( 'dragend', function( evt )
+                                                                {
+                                                                        evt.removeListener();
+                                                                        innerDrag = 0;
+                                                                        setTimeout( function () { editor.fire( 'saveSnapshot' ); }, 0 );
+                                                                });
+                                                });
 
+                                                // Event "drop" only works for IE and FF right now
+                                                // to catch droppers from outside of the document.
+                                                target.on( 'drop', function()
+                                                {
+                                                        if ( !innerDrag )
+                                                        {
+                                                                CKEDITOR.env.ie && ( savedRange = editor.getSelection().getNative().createRange() );
+                                                                editor.fire( 'saveSnapshot' );
+                                                                savedRange.select();
+                                                                setTimeout( function () { editor.fire( 'saveSnapshot' ); }, 0 );
+                                                        }
+                                                });
+                                });
+
                         // Always save an undo snapshot - the previous mode might have
                         // changed editor contents.
                         editor.on( 'beforeModeUnload', function()