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1
7
8 package org.jdesktop.swing.binding;
9
10 import java.beans.PropertyChangeEvent  ;
11 import java.beans.PropertyChangeListener ;
12
13 import javax.swing.JComponent ;
14 import javax.swing.UIManager ;
15 import javax.swing.event.DocumentEvent ;
16 import javax.swing.event.DocumentListener ;
17 import javax.swing.text.BadLocationException ;
18 import javax.swing.text.Document ;
19 import javax.swing.text.JTextComponent ;
20
21 import org.jdesktop.swing.data.DataModel;
22
23
24
38 public class TextBinding extends AbstractBinding {
39 private JComponent component;
40 private Document document;
41
42 public TextBinding(JTextComponent textComponent,
43 DataModel model, String fieldName) {
44 super(textComponent, model, fieldName, AbstractBinding.AUTO_VALIDATE);
45 initDocument(textComponent.getDocument());
46 }
47
48 public TextBinding(JTextComponent textComponent,
49 DataModel model, String fieldName,
50 int validationPolicy) {
51 super(textComponent, model, fieldName, validationPolicy);
52 initDocument(textComponent.getDocument());
53 }
54
55 public TextBinding(JComponent component, Document document,
56 DataModel dataModel, String fieldName,
57 int validationPolicy) {
58 super(component, dataModel, fieldName, validationPolicy);
59 initDocument(document);
60 }
61
62 public JComponent getComponent() {
63 return component;
64 }
65
66 protected void setComponent(JComponent component) {
67 this.component = component;
68 configureEditability();
69 }
70
71 protected void configureEditability() {
72 if (!(component instanceof JTextComponent )) return;
73 JTextComponent textComponent = (JTextComponent ) component;
74 textComponent.setEditable(!metaData.isReadOnly());
75
76 }
77
78 protected void installMetaDataListener() {
79 PropertyChangeListener l = new PropertyChangeListener () {
80
81 public void propertyChange(PropertyChangeEvent evt) {
82 if ("readOnly".equals(evt.getPropertyName())) {
83 configureEditability();
84 }
85
86 }
87
88 };
89 metaData.addPropertyChangeListener(l);
91 }
93
94 protected Object getComponentValue() {
95 String txt;
96 try {
97 txt = document.getText(0, document.getLength());
98 }
99 catch (BadLocationException e) {
100 txt = null;
101 }
102 return txt;
103 }
104
105 protected void setComponentValue(Object value) {
106 try {
107 document.remove(0, document.getLength());
108 document.insertString(0, convertFromModelType(value), null);
109 }
110 catch (BadLocationException e) {
111 UIManager.getLookAndFeel().provideErrorFeedback(component);
112 }
113
114 }
115
116 private void initDocument(Document document) {
117 this.document = document;
118 document.addDocumentListener(new DocumentListener () {
119 public void changedUpdate(DocumentEvent e) {
120 maybeModified();
121 }
122
123 public void insertUpdate(DocumentEvent e) {
124 maybeModified();
125 }
126
127 public void removeUpdate(DocumentEvent e) {
128 maybeModified();
129 }
130
131 public void maybeModified() {
132 if (!pulling) {
133 setModified(true);
134 }
135 }
136 });
137 }
138 } |
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