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/*******************************************************************************
* 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
}
}
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