com.bbn.openmap.gui.menu
Class UndoMenuItemStackTrigger

java.lang.Object
  com.bbn.openmap.gui.menu.UndoMenuItemStackTrigger

All Implemented Interfaces:

UndoStackTrigger, java.awt.event.ActionListener, java.util.EventListener

public class UndoMenuItemStackTrigger
extends java.lang.Object
implements UndoStackTrigger, java.awt.event.ActionListener

UndoMenuItemStackTrigger holds a couple of menu items that can trigger an UndoStack.

Author:

dietrick

Field Summary

protected java.util.List<java.awt.event.ActionListener>	listeners
protected java.lang.String	nothingToRedoString
protected java.lang.String	nothingToUndoString
protected java.lang.String	redoString
protected java.lang.String	undoString

Constructor Summary

UndoMenuItemStackTrigger()

Method Summary

void	actionPerformed(java.awt.event.ActionEvent e)
void	addActionListener(java.awt.event.ActionListener al) Add an ActionListener for events that trigger events to shift the undo/redo stack.
javax.swing.JMenuItem	getRedoMenuItem()
javax.swing.JMenuItem	getUndoMenuItem()
void	removeActionListener(java.awt.event.ActionListener al) Remove an ActionListener that receives events that trigger events to shift the undo/redo stack.
void	updateUndoStackStatus(UndoEvent undoEvent, UndoEvent redoEvent) To receive a status to let the trigger know if any projections in the forward or backward stacks exist, possibly to disable any gui widgets.

Methods inherited from class java.lang.Object

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

Field Detail

listeners

protected final java.util.List<java.awt.event.ActionListener> listeners

nothingToUndoString

protected java.lang.String nothingToUndoString

nothingToRedoString

protected java.lang.String nothingToRedoString

undoString

protected java.lang.String undoString

redoString

protected java.lang.String redoString

Constructor Detail

UndoMenuItemStackTrigger

public UndoMenuItemStackTrigger()

Method Detail

addActionListener

public void addActionListener(java.awt.event.ActionListener al)

Description copied from interface: UndoStackTrigger

Add an ActionListener for events that trigger events to shift the undo/redo stack.

Specified by:

addActionListener in interface UndoStackTrigger

removeActionListener

public void removeActionListener(java.awt.event.ActionListener al)

Description copied from interface: UndoStackTrigger

Remove an ActionListener that receives events that trigger events to shift the undo/redo stack.

Specified by:

removeActionListener in interface UndoStackTrigger

updateUndoStackStatus

public void updateUndoStackStatus(UndoEvent undoEvent,
                                  UndoEvent redoEvent)

Description copied from interface: UndoStackTrigger

To receive a status to let the trigger know if any projections in the forward or backward stacks exist, possibly to disable any gui widgets.

Specified by:

updateUndoStackStatus in interface UndoStackTrigger

Parameters:

undoEvent - there is at least one event to undo.

redoEvent - there is at least one event to redo.

actionPerformed

public void actionPerformed(java.awt.event.ActionEvent e)

Specified by:

actionPerformed in interface java.awt.event.ActionListener

getUndoMenuItem

public javax.swing.JMenuItem getUndoMenuItem()

Returns:

the undoMI

getRedoMenuItem

public javax.swing.JMenuItem getRedoMenuItem()

Returns:

the redoMI