virtual int countUndoCycles();
virtual int countRedoCycles();
virtual void startUndoCycle();
virtual int countUndoCycles();
virtual int countRedoCycles();
virtual void startUndoCycle();
* the given Undoable (unrecoverable). This method is called
* for Undoables that are no longer in the undo buffer.
*/
* the given Undoable (unrecoverable). This method is called
* for Undoables that are no longer in the undo buffer.
*/