1 // $Id:DefaultMutableTreeNodeComparator.java 62 2008-04-20 12:28:56Z me $
2 /*
3 * xsAnalyzer - XML schema analyzing tool. Copyright (C) 2008 Michael Engelhardt
4 *
5 * This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public
6 * License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later
7 * version.
8 *
9 * This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied
10 * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
11 *
12 * You should have received a copy of the GNU General Public License along with this program; if not, write to the Free
13 * Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
14 */
15 /**
16 *
17 */
18 package de.mindcrimeilab.xsanalyzer.util;
19
20 import java.util.Comparator;
21
22 import javax.swing.tree.DefaultMutableTreeNode;
23
24 /**
25 * @author Michael Engelhardt<me@mindcrime-ilab.de>
26 * @author $Author:me $
27 * @version $Revision:62 $
28 *
29 */
30 public class DefaultMutableTreeNodeComparator implements Comparator<DefaultMutableTreeNode> {
31
32 private final Comparator<Object> delegate;
33
34 @SuppressWarnings("unchecked")
35 public DefaultMutableTreeNodeComparator(Comparator comparator) {
36 delegate = comparator;
37 }
38
39 /*
40 * (non-Javadoc)
41 *
42 * @see java.util.Comparator#compare(java.lang.Object, java.lang.Object)
43 */
44 @Override
45 public int compare(DefaultMutableTreeNode o1, DefaultMutableTreeNode o2) {
46 if (null == o1 && null != o2) {
47 return 1;
48 }
49 else if (null != o1 && null == o2) {
50 return -1;
51 }
52 else if (null == o1 && null == o2) {
53 return 0;
54 }
55 else {
56 return delegate.compare(o1.getUserObject(), o2.getUserObject());
57 }
58 }
59
60 }