com.tensegrity.skeleton.commands.generic
Class UndoCommand

java.lang.Object
  com.tensegrity.generic.command.BaseCommand
      com.tensegrity.skeleton.commands.CommonBaseCommand
          com.tensegrity.skeleton.commands.DocumentCommand
              com.tensegrity.skeleton.commands.GraphDocumentCommand
                  com.tensegrity.skeleton.commands.EditGraphDocumentCommand
                      com.tensegrity.skeleton.commands.generic.UndoCommand

All Implemented Interfaces:

Command

public class UndoCommand

extends EditGraphDocumentCommand

Reverts the last performed Command and returns the application to the state it had before the it was performed.

This class uses the GraphPanel.undo() method to undo the last performed Command.

Version:

$Id: UndoCommand.java,v 1.9 2005/04/13 14:54:04 KevinCVS Exp $

Author:

MichaelKegel, Gilles Iachelini, Stepan RUtz

Constructor Summary

UndoCommand(ApplicationFrame applicationFrame, java.lang.String command)
Creates a new UndoCommand.

Method Summary

boolean	isEnabled() (non-Javadoc) This method returns true if the currently active Document is an instance of GraphDocument.
void	perform(java.lang.Object args) Updates the StatusBar with this commands title string.

Methods inherited from class com.tensegrity.skeleton.commands.GraphDocumentCommand

getGraphDocument, getVisualGraphView

Methods inherited from class com.tensegrity.skeleton.commands.DocumentCommand

getDocument, getGraphApplication, newGraphDocumentFromFactory

Methods inherited from class com.tensegrity.skeleton.commands.CommonBaseCommand

getApplicationFrame, getTitle

Methods inherited from class com.tensegrity.generic.command.BaseCommand

getDescription, getId, getPerformDescription, setEnabled

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

UndoCommand

public UndoCommand(ApplicationFrame applicationFrame,
                   java.lang.String command)

Creates a new UndoCommand.

Parameters:

applicationFrame - Application context for this command.

command - the ID of this command.

Method Detail

isEnabled

public boolean isEnabled()

Description copied from class: GraphDocumentCommand

(non-Javadoc) This method returns true if the currently active Document is an instance of GraphDocument.

Specified by:

isEnabled in interface Command

Overrides:

isEnabled in class EditGraphDocumentCommand

perform

public void perform(java.lang.Object args)

Description copied from class: CommonBaseCommand

Updates the StatusBar with this commands title string. (non-Javadoc)

Specified by:

perform in interface Command

Overrides:

perform in class CommonBaseCommand

See Also:

Command.perform(java.lang.Object)