| /******************************************************************************* |
| * Copyright (c) 2011-2012 EclipseSource Muenchen GmbH and others. |
| * |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License 2.0 |
| * which accompanies this distribution, and is available at |
| * https://www.eclipse.org/legal/epl-2.0/ |
| * |
| * SPDX-License-Identifier: EPL-2.0 |
| * |
| * Contributors: |
| * Eugen Neufeld - initial API and implementation |
| * |
| *******************************************************************************/ |
| package org.eclipse.emf.ecp.workspace.internal.ui; |
| |
| import org.eclipse.core.commands.AbstractHandler; |
| import org.eclipse.core.commands.ExecutionEvent; |
| import org.eclipse.core.commands.ExecutionException; |
| import org.eclipse.emf.ecp.spi.core.InternalProject; |
| import org.eclipse.jface.viewers.IStructuredSelection; |
| import org.eclipse.ui.handlers.HandlerUtil; |
| |
| /** |
| * Undo Last Command Handler. |
| * |
| * @author Tobias Verhoeven |
| * |
| */ |
| public class UndoLastCommandHandler extends AbstractHandler { |
| |
| /** {@inheritDoc} **/ |
| @Override |
| public Object execute(ExecutionEvent event) throws ExecutionException { |
| final InternalProject project = (InternalProject) ((IStructuredSelection) HandlerUtil |
| .getActiveMenuSelection(event)) |
| .getFirstElement(); |
| if (project == null) { |
| return null; |
| } |
| project.getEditingDomain().getCommandStack().undo(); |
| |
| return null; |
| } |
| } |