/*******************************************************************************
* Copyright (c) 2010 Oak Ridge National Laboratory.
* 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
******************************************************************************/
package org.csstudio.swt.xygraph.undo;
/** Abstract base for an undo-able command that saves some state
* @author Kay Kasemir
*/
abstract public class SaveStateCommand implements IUndoableCommand
{
/** Name of the command, shown in undo/redo GUI */
final private String name;
/** Initialize
* Derived class should save the 'original' state.
* */
public SaveStateCommand(final String name)
{
this.name = name;
}
/** Derived class should implement this to save the 'final' state.
* Might be called multiple times to save intermediate states,
* and the state saved on the last call would be the 'redo' state.
*/
abstract public void saveState();
/** @return Name of the command, shown in undo/redo GUI */
@Override
public String toString()
{
return name;
}
}