- All Implemented Interfaces:
- FigureSelectionListener, Command
public class UndoCommand
- extends AbstractCommand
Command to undo the latest change in the drawing.
Undo activities can be undone only once, therefore they
are not added to the undo stack again (redo activities
can be added to the redo stack again, because they can
be redone several times, every time pushing a corresponding
undo activity as well).
|Methods inherited from class org.jhotdraw.standard.AbstractCommand
addCommandListener, createEventDispatcher, createViewChangeListener, dispose, figureSelectionChanged, getDrawingEditor, getEventDispatcher, getUndoActivity, isExecutable, isViewRequired, name, removeCommandListener, setName, setUndoActivity, view, viewCreated, viewDestroying, viewSelectionChanged
|Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
public UndoCommand(java.lang.String name,
- Constructs a properties command.
name - the command name
newDrawingEditor - the DrawingEditor which manages the views
public void execute()
- Description copied from class:
- Executes the command.
- Specified by:
execute in interface
execute in class
public boolean isExecutableWithView()
- Used in enabling the undo menu item.
Undo menu item will be enabled only when there is atleast one undoable
activity registered with UndoManager.
isExecutableWithView in class