001: /*
002: * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
003: *
004: * Copyright 1997-2007 Sun Microsystems, Inc. All rights reserved.
005: *
006: * The contents of this file are subject to the terms of either the GNU
007: * General Public License Version 2 only ("GPL") or the Common
008: * Development and Distribution License("CDDL") (collectively, the
009: * "License"). You may not use this file except in compliance with the
010: * License. You can obtain a copy of the License at
011: * http://www.netbeans.org/cddl-gplv2.html
012: * or nbbuild/licenses/CDDL-GPL-2-CP. See the License for the
013: * specific language governing permissions and limitations under the
014: * License. When distributing the software, include this License Header
015: * Notice in each file and include the License file at
016: * nbbuild/licenses/CDDL-GPL-2-CP. Sun designates this
017: * particular file as subject to the "Classpath" exception as provided
018: * by Sun in the GPL Version 2 section of the License file that
019: * accompanied this code. If applicable, add the following below the
020: * License Header, with the fields enclosed by brackets [] replaced by
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022: * "Portions Copyrighted [year] [name of copyright owner]"
023: *
024: * Contributor(s):
025: *
026: * The Original Software is NetBeans. The Initial Developer of the Original
027: * Software is Sun Microsystems, Inc. Portions Copyright 1997-2006 Sun
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033: * under the [CDDL or GPL Version 2] license." If you do not indicate a
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035: * your version of this file under either the CDDL, the GPL Version 2 or
036: * to extend the choice of license to its licensees as provided above.
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040: */
041:
042: package org.netbeans.modules.xml.xdm;
043:
044: import javax.swing.undo.AbstractUndoableEdit;
045: import javax.swing.undo.CannotRedoException;
046: import javax.swing.undo.CannotUndoException;
047: import javax.swing.undo.UndoableEdit;
048: import org.netbeans.modules.xml.xdm.nodes.Document;
049:
050: /**
051: *
052: * @author Chris Webster
053: */
054: class XDMModelUndoableEdit extends AbstractUndoableEdit {
055: // Even though AbstractUndoableEdit is serializable this class is not. The
056: // UndoableEdit interface is not Serializable, so this is not required but
057: // just an implementation detail.
058:
059: private static final long serialVersionUID = -4513245871320808368L;
060:
061: public XDMModelUndoableEdit(Document oldDoc, Document newDoc,
062: XDMModel model) {
063: oldDocument = oldDoc;
064: newDocument = newDoc;
065: this .model = model;
066: }
067:
068: @Override
069: public void redo() throws CannotRedoException {
070: super .redo();
071: try {
072: model.resetDocument(newDocument);
073: } catch (RuntimeException ex) {
074: if (newDocument != model.getCurrentDocument()) {
075: CannotRedoException e = new CannotRedoException();
076: e.initCause(ex);
077: throw e;
078: } else {
079: throw ex;
080: }
081: }
082: }
083:
084: @Override
085: public void undo() throws CannotUndoException {
086: super .undo();
087: try {
088: model.resetDocument(oldDocument);
089: } catch (RuntimeException ex) {
090: if (oldDocument != model.getCurrentDocument()) {
091: CannotUndoException e = new CannotUndoException();
092: e.initCause(ex);
093: throw e;
094: } else {
095: throw ex;
096: }
097: }
098: }
099:
100: @Override
101: public boolean addEdit(UndoableEdit anEdit) {
102: if (anEdit instanceof XDMModelUndoableEdit) {
103: XDMModelUndoableEdit theEdit = (XDMModelUndoableEdit) anEdit;
104: if (newDocument == theEdit.oldDocument) {
105: newDocument = theEdit.newDocument;
106: return true;
107: }
108: }
109: return false;
110: }
111:
112: private Document oldDocument;
113: private Document newDocument;
114: private XDMModel model;
115:
116: }
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