| /******************************************************************************* |
| * Copyright (c) 2003, 2005 IBM Corporation 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: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| /* |
| * Created on Nov 26, 2003 |
| * |
| * To change the template for this generated file go to |
| * Window>Preferences>Java>Code Generation>Code and Comments |
| */ |
| package org.eclipse.wst.common.internal.emfworkbench.integration; |
| |
| import org.eclipse.emf.common.command.Command; |
| import org.eclipse.emf.common.command.CommandStack; |
| import org.eclipse.emf.common.command.CommandStackListener; |
| |
| |
| /** |
| * @author DABERG |
| * |
| * This class does not actually execute any commands. It merely gathers the commands to be executed |
| * and compounds them so that they can be executed against the actualCommandStack. |
| */ |
| public class CompoundingCommandStack implements CommandStack { |
| private CommandStack actualCommandStack; |
| private Command compoundCommand; |
| |
| /** |
| * |
| */ |
| public CompoundingCommandStack(CommandStack actualCommandStack) { |
| this.actualCommandStack = actualCommandStack; |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.emf.common.command.CommandStack#execute(org.eclipse.emf.common.command.Command) |
| */ |
| public void execute(Command command) { |
| if (compoundCommand == null) |
| compoundCommand = command; |
| else |
| compoundCommand = compoundCommand.chain(command); |
| } |
| |
| public void performExecution() { |
| if (compoundCommand != null) { |
| try { |
| actualCommandStack.execute(compoundCommand); |
| } finally { |
| compoundCommand = null; |
| } |
| } |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.emf.common.command.CommandStack#canUndo() |
| */ |
| public boolean canUndo() { |
| return false; |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.emf.common.command.CommandStack#undo() |
| */ |
| public void undo() { |
| //default |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.emf.common.command.CommandStack#canRedo() |
| */ |
| public boolean canRedo() { |
| return false; |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.emf.common.command.CommandStack#getUndoCommand() |
| */ |
| public Command getUndoCommand() { |
| return null; |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.emf.common.command.CommandStack#getRedoCommand() |
| */ |
| public Command getRedoCommand() { |
| return null; |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.emf.common.command.CommandStack#getMostRecentCommand() |
| */ |
| public Command getMostRecentCommand() { |
| return null; |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.emf.common.command.CommandStack#redo() |
| */ |
| public void redo() { |
| //redo |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.emf.common.command.CommandStack#flush() |
| */ |
| public void flush() { |
| //flush |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.emf.common.command.CommandStack#addCommandStackListener(org.eclipse.emf.common.command.CommandStackListener) |
| */ |
| public void addCommandStackListener(CommandStackListener listener) { |
| //default |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.emf.common.command.CommandStack#removeCommandStackListener(org.eclipse.emf.common.command.CommandStackListener) |
| */ |
| public void removeCommandStackListener(CommandStackListener listener) { |
| //default |
| } |
| } |