01: /*
02: * UndoManager.java
03: *
04: * Copyright (C) 2002-2003 Peter Graves
05: * $Id: UndoManager.java,v 1.3 2003/08/01 16:06:16 piso Exp $
06: *
07: * This program is free software; you can redistribute it and/or
08: * modify it under the terms of the GNU General Public License
09: * as published by the Free Software Foundation; either version 2
10: * of the License, or (at your option) any later version.
11: *
12: * This program is distributed in the hope that it will be useful,
13: * but WITHOUT ANY WARRANTY; without even the implied warranty of
14: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15: * GNU General Public License for more details.
16: *
17: * You should have received a copy of the GNU General Public License
18: * along with this program; if not, write to the Free Software
19: * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
20: */
21:
22: package org.armedbear.j;
23:
24: import javax.swing.undo.CompoundEdit;
25: import javax.swing.undo.UndoableEdit;
26:
27: public final class UndoManager extends javax.swing.undo.UndoManager {
28: public synchronized void undo() {
29: UndoableEdit edit = editToBeUndone();
30: super .undo();
31: if (edit instanceof UndoBoundary)
32: super .undo();
33: }
34:
35: public synchronized void redo() {
36: UndoableEdit edit = editToBeRedone();
37: super .redo();
38: if (edit instanceof UndoBoundary)
39: super .redo();
40: }
41:
42: public void appendUndoFold(Editor editor) {
43: if (edits.size() > 0) {
44: UndoFold undoFold = new UndoFold(editor);
45: UndoableEdit lastEdit = (UndoableEdit) edits.remove(edits
46: .size() - 1);
47: CompoundEdit compoundEdit = new CompoundEdit();
48: compoundEdit.addEdit(lastEdit);
49: compoundEdit.addEdit(undoFold);
50: compoundEdit.end();
51: edits.add(compoundEdit);
52: }
53: }
54: }
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