com.bbn.openmap.event
Interface UndoStackTrigger

All Known Implementing Classes:

UndoMenuItemStackTrigger

public interface UndoStackTrigger

Provides Stack input by firing UndoCmd and RedoCmd commands, which cause updates to whatever component described by the UndoEvent.

Method Summary

void	addActionListener(java.awt.event.ActionListener al) Add an ActionListener for events that trigger events to shift the undo/redo stack.
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.

Method Detail

addActionListener

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

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

removeActionListener

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

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

updateUndoStackStatus

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.

Parameters:

undoEvent - there is at least one event to undo.

redoEvent - there is at least one event to redo.