org.vizzini.game.action
Class UndoAction

java.lang.Object
  org.vizzini.game.action.AbstractAction
      org.vizzini.game.action.UndoAction

All Implemented Interfaces:

Serializable, Comparable, IAction, IUndo

public class UndoAction
extends AbstractAction
implements IUndo

Provides an undo action in the game framework. An undo action instance signals the ActionManager to undo the last action.

This class participates in the Command pattern as described in Pattern In Java Volume 1, Mark Grand, 1998.

Since:

v0.2

Version:

v0.2

Author:

Jeffrey M. Thompson

See Also:

Serialized Form

Constructor Summary

UndoAction()
Construct this object.

Method Summary

boolean	doIt() This implementation of doIt does not actually do anything.
boolean	undoIt() This implementation of undoIt does not actually do anything.

Methods inherited from class org.vizzini.game.action.AbstractAction

clear, compareTo, equals, getAgent, getRating, hashCode, prettyPrint, release, setAgent, setRating, toString

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

UndoAction

public UndoAction()

Construct this object.

Since:

v0.2

Method Detail

doIt

public boolean doIt()

This implementation of doIt does not actually do anything. The logic for undo is in the ActionManager class.

Specified by:

doIt in interface IAction

Overrides:

doIt in class AbstractAction

Returns:

true if successful and can be undone.

Since:

v0.2

undoIt

public boolean undoIt()

This implementation of undoIt does not actually do anything. Undo actions are not undone. Instead a redo action is issued.

Specified by:

undoIt in interface IAction

Overrides:

undoIt in class AbstractAction

Returns:

true if the undo was successful.

Since:

v0.2