Ticket #7422: 7422.patch

_source/plugins/undo/plugin.js

@@ -78 +78 @@
                                                         if ( !event.data.$.ctrlKey && !event.data.$.metaKey )
                                                                 undoManager.type( event );
                                                 });
+
+                                        // Listen for Drag & Drop
+                                        if ( CKEDITOR.env.ie )
+                                        {
+                                                // Start of drag from inside the document
+                                                editor.document.getBody().on( 'dragstart', function()
+                                                        {
+                                                                editor.fire( 'saveSnapshot' );
+                                                        });
+                                                // Missing detection for dragging from outside
+
+                                                // End of drag
+                                                editor.document.getBody().on( 'drop', function()
+                                                        {
+                                                                setTimeout( function() {
+                                                                                editor.fire( 'saveSnapshot' );
+                                                                }, 0);
+                                                        });
+                                        }
+                                        else
+                                        {
+                                                // Start of drag from inside the document
+                                                editor.document.on( 'dragstart', function()
+                                                        {
+                                                                editor.fire( 'saveSnapshot' );
+                                                        });
+
+                                                editor.document.on( 'dragenter', function(e)
+                                                        {
+                                                                // Start of drag from outside the document
+                                                                if ( editor.document.$.documentElement == e.data.$.target )
+                                                                        editor.fire( 'saveSnapshot' );
+                                                        });
+
+                                                // Webkit doesn't fire this event unless ondragover is cancelled, but then the
+                                                // drag&drop doesn't happe, and that's worse.
+                                                editor.document.on( 'drop', function(e)
+                                                        {
+                                                                editor.fire( 'saveSnapshot' );
+                                                        });
+                                        }
                                 });
 
                         // Always save an undo snapshot - the previous mode might have