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1
30 package com.genimen.djeneric.tools.specifier.components;
31
32 import javax.swing.DefaultComboBoxModel  ;
33 import javax.swing.JComponent ;
34 import javax.swing.JList ;
35 import javax.swing.ListModel ;
36 import javax.swing.event.ListSelectionEvent ;
37 import javax.swing.event.ListSelectionListener ;
38
39 import com.genimen.djeneric.repository.DjDomainValue;
40 import com.genimen.djeneric.repository.exceptions.DjenericException;
41 import com.genimen.djeneric.tools.specifier.interfaces.ObjectViewer;
42 import com.genimen.djeneric.util.DjLogger;
43
44 public class DjListBox extends JList implements DjBindable, ListSelectionListener
45 {
46 private static final long serialVersionUID = 1L;
47 private BindingMediator _mediator;
48
49 public DjListBox(ObjectViewer viewer, String propertyName, DjDomainValue[] domainValues) throws DjenericException
50 {
51 super();
52 setModel(new DefaultComboBoxModel (domainValues));
53 addListSelectionListener(this);
54
55 _mediator = new BindingMediator(this, viewer, propertyName);
56 }
57
58 public void valueChanged(ListSelectionEvent e)
59 {
60 try
61 {
62 apply();
63 }
64 catch (Exception x)
65 {
66 DjLogger.log(x);
67 }
68 }
69
70 public boolean isComponentWritable()
71 {
72 return _mediator.isComponentWritable();
73 }
74
75 public void clear()
76 {
77 setSelectedIndex(-1);
78 setEnabled(_mediator.isComponentWritable());
79 }
80
81 public void apply() throws DjenericException
82 {
83 if (getSelectedIndex() != -1)
84 {
85 DjDomainValue dv = (DjDomainValue) getSelectedValue();
86 _mediator.setPropertyValue(dv.getValue());
87 }
88 }
89
90 public void setPropertyName(String propertyName) throws DjenericException
91 {
92 _mediator.setPropertyName(propertyName);
93 }
94
95 public void setViewer(ObjectViewer viewer)
96 {
97 _mediator.setViewer(viewer);
98 }
99
100 public void synchronize() throws DjenericException
101 {
102 setEnabled(_mediator.isComponentWritable());
103
104 String curVal = _mediator.getPropertyValueString();
105 int idx = -1;
106 ListModel mdl = getModel();
107
108 if (curVal.length() != 0)
109 {
110 for (int i = 0; i < mdl.getSize(); i++)
111 {
112 DjDomainValue dv = (DjDomainValue) mdl.getElementAt(i);
113 if (dv.getValue().equals(curVal))
114 {
115 idx = i;
116 break;
117 }
118 }
119 }
120
121 setSelectedIndex(idx);
122 }
123
124 public Object getDisplayedValue()
125 {
126 if (getSelectedIndex() != -1) return getSelectedValue();
127 return null;
128 }
129
130 public String getPropertyName()
131 {
132 return _mediator.getPropertyName();
133 }
134
135 public JComponent getFocussableComponent()
136 {
137 return this;
138 }
139 } |
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