01: /*
02: * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
03: *
04: * Copyright 1997-2007 Sun Microsystems, Inc. All rights reserved.
05: *
06: * The contents of this file are subject to the terms of either the GNU
07: * General Public License Version 2 only ("GPL") or the Common
08: * Development and Distribution License("CDDL") (collectively, the
09: * "License"). You may not use this file except in compliance with the
10: * License. You can obtain a copy of the License at
11: * http://www.netbeans.org/cddl-gplv2.html
12: * or nbbuild/licenses/CDDL-GPL-2-CP. See the License for the
13: * specific language governing permissions and limitations under the
14: * License. When distributing the software, include this License Header
15: * Notice in each file and include the License file at
16: * nbbuild/licenses/CDDL-GPL-2-CP. Sun designates this
17: * particular file as subject to the "Classpath" exception as provided
18: * by Sun in the GPL Version 2 section of the License file that
19: * accompanied this code. If applicable, add the following below the
20: * License Header, with the fields enclosed by brackets [] replaced by
21: * your own identifying information:
22: * "Portions Copyrighted [year] [name of copyright owner]"
23: *
24: * Contributor(s):
25: *
26: * The Original Software is NetBeans. The Initial Developer of the Original
27: * Software is Sun Microsystems, Inc. Portions Copyright 1997-2006 Sun
28: * Microsystems, Inc. All Rights Reserved.
29: *
30: * If you wish your version of this file to be governed by only the CDDL
31: * or only the GPL Version 2, indicate your decision by adding
32: * "[Contributor] elects to include this software in this distribution
33: * under the [CDDL or GPL Version 2] license." If you do not indicate a
34: * single choice of license, a recipient has the option to distribute
35: * your version of this file under either the CDDL, the GPL Version 2 or
36: * to extend the choice of license to its licensees as provided above.
37: * However, if you add GPL Version 2 code and therefore, elected the GPL
38: * Version 2 license, then the option applies only if the new code is
39: * made subject to such option by the copyright holder.
40: */
41: package org.netbeans.tax;
42:
43: import java.beans.PropertyChangeListener;
44:
45: import org.netbeans.tax.event.TreeEventManager;
46: import org.netbeans.tax.event.TreeEvent;
47:
48: /**
49: * Tree node adds notion of owner document.
50: *
51: * @author Libor Kramolis
52: * @version 0.1
53: */
54: public abstract class TreeNode extends TreeObject {
55:
56: /** */
57: public static final String PROP_NODE = "this"; // NOI18N
58:
59: //
60: // init
61: //
62:
63: /** Creates new TreeNode. */
64: protected TreeNode() {
65: }
66:
67: /**
68: * Creates new TreeNode - copy constructor.
69: */
70: protected TreeNode(TreeNode node) {
71: super (node);
72: }
73:
74: //
75: // itself
76: //
77:
78: /**
79: * Traverse to the owner document and return it.
80: */
81: public abstract TreeDocumentRoot getOwnerDocument();
82:
83: //
84: // Event support
85: //
86:
87: /** Get assigned event manager assigned to ownerDocument.
88: * If this node does not have its one, it returns null;
89: * @return assigned event manager (may be null).
90: */
91: public final TreeEventManager getEventManager() {
92: if (getOwnerDocument() == null) {
93: return null;
94: }
95: return getOwnerDocument().getRootEventManager();
96: }
97:
98: }
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