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1
7
8 package org.jdesktop.swing.binding;
9
10 import java.beans.PropertyChangeEvent  ;
11 import java.beans.PropertyChangeListener ;
12 import java.util.ArrayList ;
13 import java.util.List ;
14
15 import javax.swing.AbstractListModel ;
16 import javax.swing.DefaultListModel ;
17 import javax.swing.JComponent ;
18 import javax.swing.JList ;
19 import javax.swing.ListModel ;
20
21 import org.jdesktop.swing.data.DataConstants;
22 import org.jdesktop.swing.data.DataModel;
23 import org.jdesktop.swing.data.MetaData;
24 import org.jdesktop.swing.data.SelectionModel;
25
26 public class ListBinding extends AbstractBinding {
27
28 private JList list;
29
30 public ListBinding(JList list, DataModel model, String fieldName) {
31 super(list, model, fieldName, AbstractBinding.AUTO_VALIDATE_NONE);
32 }
33
34
35 public boolean isModified() {
36 return false;
37 }
38
39 public boolean isValid() {
40 return true;
41 }
42
43 public JComponent getComponent() {
44 return list;
45 }
46
47 protected void setComponent(JComponent component) {
48 list = (JList )component;
49 configureSelection();
50 }
51
52 private void configureSelection() {
53 Object selectionMeta = metaData.getCustomProperty(DataConstants.SELECTION_MODEL);
54 if (selectionMeta instanceof SelectionModel) {
55 new ListSelectionBinding((SelectionModel) selectionMeta, list.getSelectionModel());
56 }
57
58 }
59
60
61 protected void installMetaDataListener() {
62 PropertyChangeListener l = new PropertyChangeListener () {
63
64 public void propertyChange(PropertyChangeEvent evt) {
65 if (DataConstants.SELECTION_MODEL.equals(evt.getPropertyName())) {
66 configureSelection();
67 }
68
69 }
70
71 };
72 metaData.addPropertyChangeListener(l);
73 }
74
75
76 protected Object getComponentValue(){
77 ListModel model = list.getModel();
78 Class klazz = metaData.getElementClass();
79
80 if (klazz.equals(List .class)) {
81 List lvalue = new ArrayList ();
82 for (int i = 0, size = model.getSize(); i < size; i++) {
83 lvalue.add(model.getElementAt(i));
84 }
85 return lvalue;
86 }
87 else if (klazz.isArray()) {
88
89 int size = model.getSize();
91 Object [] values = new Object [size];
92 for (int i = 0; i < size; i++) {
93 values[i] = model.getElementAt(i);
94 }
95 return values;
96 }
97 return null;
98 }
99
100 protected void setComponentValue(Object value) {
101 Class klazz = metaData.getElementClass();
102 if (klazz.equals(List .class)) {
103 List lvalue = (List )value;
104 if (lvalue != null) {
105 list.setListData(lvalue.toArray());
106 }
107 }
108 else if (klazz.isArray()) {
109 Object [] arrayValue = (Object [])value;
110
111 if (arrayValue != null) {
112 list.setListData(arrayValue);
113 } else {
114 list.setModel(new DefaultListModel ());
116 }
117 }
118 }
119 }
120
121 |
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