/* Copyright (C) 2003 Nizar N. Batada, Morten O. Alver All programs in this directory and subdirectories are published under the GNU General Public License as described below. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA Further information about the GNU GPL is available at: http://www.gnu.org/copyleft/gpl.ja.html */ package net.sf.jabref.undo; import javax.swing.undo.CannotUndoException; import javax.swing.undo.UndoManager; import javax.swing.undo.UndoableEdit; import javax.swing.event.UndoableEditEvent; import net.sf.jabref.BasePanel; public class CountingUndoManager extends UndoManager { private int unchangedPoint = 0, current = 0; private BasePanel panel = null; public CountingUndoManager(BasePanel basePanel) { super(); panel = basePanel; } public synchronized boolean addEdit(UndoableEdit edit) { current++; return super.addEdit(edit); } public synchronized void undo() throws CannotUndoException { super.undo(); current--; panel.updateEntryEditorIfShowing(); //panel.updateViewToSelected(); /*SwingUtilities.invokeLater(new Runnable() { public void run() { panel.updateViewToSelected(); } });*/ } public synchronized void redo() throws CannotUndoException { super.redo(); current++; panel.updateEntryEditorIfShowing(); //panel.updateViewToSelected(); /*SwingUtilities.invokeLater(new Runnable() { public void run() { panel.updateViewToSelected(); } });*/ } public synchronized void markUnchanged() { unchangedPoint = current; } public boolean hasChanged() { return !(current == unchangedPoint); } }