/* Represents an undo or redo action.
Copyright (c) 2003-2009 The Regents of the University of California.
All rights reserved.
Permission is hereby granted, without written agreement and without
license or royalty fees, to use, copy, modify, and distribute this
software and its documentation for any purpose, provided that the above
copyright notice and the following two paragraphs appear in all copies
of this software.
IN NO EVENT SHALL THE UNIVERSITY OF CALIFORNIA BE LIABLE TO ANY PARTY
FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF
THE UNIVERSITY OF CALIFORNIA HAS BEEN ADVISED OF THE POSSIBILITY OF
SUCH DAMAGE.
THE UNIVERSITY OF CALIFORNIA SPECIFICALLY DISCLAIMS ANY WARRANTIES,
INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE
PROVIDED HEREUNDER IS ON AN "AS IS" BASIS, AND THE UNIVERSITY OF
CALIFORNIA HAS NO OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES,
ENHANCEMENTS, OR MODIFICATIONS.
PT_COPYRIGHT_VERSION_2
COPYRIGHTENDKEY
*/
package ptolemy.kernel.undo;
import java.util.LinkedList;
import java.util.List;
//////////////////////////////////////////////////////////////////////////
//// UndoActionsList
/**
This class contains a sequential list of UndoAction instances that
can be executed in order.
@author Edward A. Lee
@version $Id$
@since Ptolemy II 7.1
@Pt.ProposedRating Yellow (eal)
@Pt.AcceptedRating Red (cxh)
*/
public class UndoActionsList implements UndoAction {
/** Create an undo action with the specified action
* to be executed first.
* @param firstAction The action to execute first.
*/
public UndoActionsList(UndoAction firstAction) {
_actionList = new LinkedList<UndoAction>();
_actionList.add(firstAction);
}
///////////////////////////////////////////////////////////////////
//// public methods ////
/** Append a new entry to the list.
* @param action The entry to append.
*/
public void add(UndoAction action) {
_actionList.add(action);
}
/** Execute the action. */
public void execute() throws Exception {
for (UndoAction action : _actionList) {
action.execute();
}
}
public String toString() {
StringBuffer result = new StringBuffer("Action List:\n");
for (UndoAction action : _actionList) {
result.append(action.toString());
result.append("\n");
}
result.append("\nEnd of action list.\n");
return result.toString();
}
///////////////////////////////////////////////////////////////////
//// private variables ////
/** The list of actions to execute. */
private List<UndoAction> _actionList;
}