| /******************************************************************************* |
| * Copyright (c) 2010 BestSolution.at and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| * Tom Schindl <tom.schindl@bestsolution.at> - initial API and implementation |
| ******************************************************************************/ |
| package org.eclipse.e4.tools.emf.editor3x; |
| |
| import org.eclipse.e4.tools.emf.ui.common.IModelResource; |
| import org.eclipse.jface.action.Action; |
| |
| public class UndoAction extends Action { |
| private final IModelResource resource; |
| private final IModelResource.ModelListener listener; |
| |
| public UndoAction(IModelResource resource) { |
| this.resource = resource; |
| listener = new IModelResource.ModelListener() { |
| |
| @Override |
| public void commandStackChanged() { |
| update(); |
| } |
| |
| @Override |
| public void dirtyChanged() { |
| } |
| }; |
| resource.addModelListener(listener); |
| update(); |
| } |
| |
| @Override |
| public void run() { |
| if (resource.getEditingDomain().getCommandStack().canUndo()) { |
| resource.getEditingDomain().getCommandStack().undo(); |
| } |
| } |
| |
| private void update() { |
| if (resource.getEditingDomain().getCommandStack().canUndo()) { |
| setText(Messages.UndoAction_Undo + " " //$NON-NLS-1$ |
| + resource.getEditingDomain().getCommandStack() |
| .getUndoCommand().getLabel()); |
| setEnabled(true); |
| } else { |
| setText(Messages.UndoAction_Undo); |
| setEnabled(false); |
| } |
| } |
| |
| /** |
| * Clean up |
| */ |
| public void dispose() { |
| resource.removeModelListener(listener); |
| } |
| } |