| The stack of refactorings that we can undo. This stack holds all the
refactorings that have occurred in the system.
This object is a singleton object because we only want one object
responsible for storing the refactorings that can be undone.
author: Chris Seguin author: Mike Atkinson version: $Id: UndoStack.java,v 1.6 2003/12/02 23:39:40 mikeatkinson Exp $ |