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1 /*
2 * Copyright (c) 2003 Scott Howlett & Paul Libbrecht.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 *
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in
14 * the documentation and/or other materials provided with the
15 * distribution.
16 *
17 * 3. The end-user documentation included with the redistribution,
18 * if any, must include the following acknowledgment:
19 * "This product includes software developed by the Xwing
20 * Project ( http://xwing.sourceforge.net/ )."
21 * Alternately, this acknowledgment may appear in the software itself,
22 * if and wherever such third-party acknowledgments normally appear.
23 *
24 * 4. The name "Xwing" must not be used to endorse or promote products
25 * derived from this software without prior written permission. For
26 * written permission, please contact the project authors via
27 * the Xwing project site, http://xwing.sourceforge.net/ .
28 *
29 * 5. Products derived from this software may not be called "Xwing",
30 * nor may "Xwing" appear in their name, without prior written
31 * permission of the Xwing project.
32 *
33 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
34 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
35 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
36 * DISCLAIMED. IN NO EVENT SHALL THE XWING AUTHORS OR THE PROJECT
37 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
38 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
39 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
40 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
41 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
42 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
43 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
44 * SUCH DAMAGE.
45 *
46 * For more information on Xwing, please see
47 * < http://xwing.sourceforge.net/ >.
48 */
49
50 package net.sourceforge.xwing.swing;
51
52 import javax.swing.AbstractListModel;
53 import javax.swing.ComboBoxModel;
54 import javax.swing.ListModel;
55 import javax.swing.event.ChangeEvent;
56 import javax.swing.event.ChangeListener;
57 import javax.swing.event.ListDataListener;
58
59 import net.sourceforge.xwing.SourceSink;
60
61 import org.apache.commons.logging.LogFactory;
62
63 public class XComboBoxModel
64 extends AbstractListModel
65 implements ComboBoxModel {
66
67 private SourceSink selectionConn;
68 private ListModel choicesModel;
69 private Object value;
70
71 public XComboBoxModel(SourceSink selection, ListModel choices)
72 throws Exception {
73
74 choicesModel = choices;
75 selectionConn = selection;
76
77 if (selectionConn != null) {
78
79 selectionConn.addChangeListener(new ChangeListener() {
80 public void stateChanged(ChangeEvent e) {
81 fireContentsChanged(this, -1, -1);
82 }
83 });
84 }
85 }
86
87 public void setSelectedItem(Object item) {
88 try {
89 if (selectionConn != null) {
90 selectionConn.set(item);
91 } else {
92 value = item;
93 fireContentsChanged(this, -1, -1);
94 }
95 } catch (Exception exc) {
96 LogFactory.getLog(getClass()).error(
97 "Error in setSelectedItem",
98 exc);
99 }
100 }
101
102 public Object getSelectedItem() {
103 try {
104 if (selectionConn != null) {
105 return selectionConn.get();
106 } else {
107 return value;
108 }
109 } catch (Exception exc) {
110 return null;
111 }
112 }
113
114 public int getSize() {
115 return choicesModel.getSize();
116 }
117
118 public Object getElementAt(int index) {
119 return choicesModel.getElementAt(index);
120 }
121
122 public void addListDataListener(ListDataListener l) {
123 choicesModel.addListDataListener(l);
124 super.addListDataListener(l);
125 }
126
127 public void removeListDataListener(ListDataListener l) {
128 choicesModel.removeListDataListener(l);
129 super.removeListDataListener(l);
130 }
131 }
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