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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 java.awt.Dimension;
53 import java.awt.Insets;
54
55 import javax.swing.InputVerifier;
56 import javax.swing.JComponent;
57 import javax.swing.JTextArea;
58 import javax.swing.SwingUtilities;
59 import javax.swing.event.ChangeEvent;
60 import javax.swing.event.ChangeListener;
61
62 import org.apache.commons.lang.ObjectUtils;
63 import org.apache.commons.logging.LogFactory;
64 import org.w3c.dom.Node;
65
66 import net.sourceforge.xwing.CachingSourceSink;
67 import net.sourceforge.xwing.SourceSink;
68 import net.sourceforge.xwing.dom.NodeTextSourceSink;
69
70 public class XTextArea extends JTextArea {
71
72 private SourceSink conn;
73
74 public XTextArea(Node node) throws Exception {
75 this(node, true);
76 }
77
78 public XTextArea(Node node, boolean autoWrite) throws Exception {
79
80 setNode(node);
81
82 if (autoWrite) {
83 setInputVerifier(new InputVerifier() {
84 public boolean verify(JComponent input) {
85 try {
86 writeModel();
87 } catch (Exception exc) {
88 LogFactory.getLog(getClass()).error(
89 "Error in writeModel",
90 exc);
91 return false;
92 }
93 return true;
94 }
95 });
96 }
97 }
98
99 public void setNode(Node node) throws Exception {
100 if (node != null) {
101
102 conn = new CachingSourceSink(new NodeTextSourceSink(node));
103
104 conn.addChangeListener(new ChangeListener() {
105 public void stateChanged(ChangeEvent e) {
106 refreshFromModel();
107 }
108 });
109
110 refreshFromModel();
111 } else {
112 conn = null;
113 }
114 }
115
116 public void writeModel() throws Exception {
117 if (conn != null) {
118 conn.set(getText());
119 }
120 }
121
122 public void setText(String t) {
123 try {
124 if (conn != null) {
125 conn.set(t);
126 }
127 } catch (Exception exc) {
128 // Swallow for now
129 }
130 }
131
132 public Dimension getMinimumSize() {
133 Dimension d = super.getMinimumSize();
134 d = (d == null) ? new Dimension(400, 400) : d;
135 Insets insets = getInsets();
136
137 if (getColumns() != 0) {
138 d.width =
139 Math.max(
140 d.width,
141 getColumns() * getColumnWidth()
142 + insets.left
143 + insets.right);
144 }
145 if (getRows() != 0) {
146 d.height =
147 Math.max(
148 d.height,
149 getRows() * getRowHeight() + insets.top + insets.bottom);
150 }
151 return d;
152 }
153
154 public void refreshFromModel() {
155 SwingUtilities.invokeLater(new Runnable() {
156 public void run() {
157 try {
158 XTextArea.super.setText(ObjectUtils.toString(conn.get()));
159 } catch (Exception exc) {
160 LogFactory.getLog(getClass()).error(
161 "Error in refreshFromModel",
162 exc);
163 }
164 }
165 });
166 }
167 }
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