edu.utep.cs.et.gui.editor
Class DefaultEditor.UndoAction

java.lang.Object
  javax.swing.AbstractAction
      edu.utep.cs.et.gui.editor.DefaultEditor.UndoAction

All Implemented Interfaces:

ActionListener, Serializable, Cloneable, EventListener, Action

Enclosing class:

DefaultEditor

private class DefaultEditor.UndoAction
extends AbstractAction

A class representing undo actions.

Field Summary

Fields inherited from class javax.swing.AbstractAction

changeSupport, enabled

Fields inherited from interface javax.swing.Action

ACCELERATOR_KEY, ACTION_COMMAND_KEY, DEFAULT, DISPLAYED_MNEMONIC_INDEX_KEY, LARGE_ICON_KEY, LONG_DESCRIPTION, MNEMONIC_KEY, NAME, SELECTED_KEY, SHORT_DESCRIPTION, SMALL_ICON

Constructor Summary

DefaultEditor.UndoAction()
Creates a new instance.

Method Summary

void	actionPerformed(ActionEvent e) Performs an undo action on the undo manager undoManager and also update the status of this and the redo action actRedo.
void	updateUndoState() Updates the status of this action.

Methods inherited from class javax.swing.AbstractAction

addPropertyChangeListener, clone, firePropertyChange, getKeys, getPropertyChangeListeners, getValue, isEnabled, putValue, removePropertyChangeListener, setEnabled

Methods inherited from class java.lang.Object

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

Constructor Detail

DefaultEditor.UndoAction

public DefaultEditor.UndoAction()

Creates a new instance. The action is initially disabled.

Method Detail

actionPerformed

public void actionPerformed(ActionEvent e)

Performs an undo action on the undo manager undoManager and also update the status of this and the redo action actRedo.

 also
  assignable undoManager;
  assignable actRedo;
 

updateUndoState

public void updateUndoState()

Updates the status of this action. If the undo manager undoManager can perform an undo action, then enable this action; otherwise, disable it.