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1
30 package com.genimen.djeneric.tools.specifier.components;
31
32 import java.awt.event.ActionEvent  ;
33 import java.awt.event.ActionListener ;
34 import java.awt.event.FocusEvent ;
35 import java.awt.event.FocusListener ;
36
37 import javax.swing.DefaultComboBoxModel ;
38 import javax.swing.JComboBox ;
39 import javax.swing.JComponent ;
40
41 import com.genimen.djeneric.repository.DjDomainValue;
42 import com.genimen.djeneric.repository.exceptions.DjenericException;
43 import com.genimen.djeneric.tools.specifier.interfaces.ObjectViewer;
44 import com.genimen.djeneric.ui.DjFocusMeLater;
45 import com.genimen.djeneric.util.DjLogger;
46
47 public class DjComboBox extends JComboBox implements DjBindable, FocusListener , ActionListener
48 {
49
50 private static final long serialVersionUID = 1L;
51 private BindingMediator _mediator;
52
53 public DjComboBox(ObjectViewer viewer, String propertyName, DjDomainValue[] domainValues) throws DjenericException
54 {
55 super();
56 setModel(new DefaultComboBoxModel (domainValues));
57 setEditable(true);
58
59 if (isEditable())
60 {
61 DjFocusMeLater.getNeededComponent(this).addFocusListener(this);
62 }
63 else addActionListener(this);
64
65 _mediator = new BindingMediator(this, viewer, propertyName);
66 }
67
68 public void actionPerformed(ActionEvent e)
69 {
70 try
71 {
72 apply();
73 }
74 catch (Exception x)
75 {
76 DjLogger.log(x);
77 }
78 }
79
80 public void clear()
81 {
82 setSelectedIndex(-1);
83 setEnabled(_mediator.isComponentWritable());
84 }
85
86 public void apply() throws DjenericException
87 {
88 if (isEditable())
89 {
90 _mediator.setValue(getEditor().getItem());
91 }
92 else
93 {
94 if (getSelectedIndex() != -1)
95 {
96 DjDomainValue dv = (DjDomainValue) getSelectedItem();
97 _mediator.setValue(dv.getValue());
98 }
99 }
100 }
101
102 public void focusGained(FocusEvent e)
103 {
104 if (isEditable()) getEditor().selectAll();
105 }
106
107 public void focusLost(FocusEvent e)
108 {
109 try
110 {
111 apply();
112 synchronize();
113 }
114 catch (Exception x)
115 {
116 DjLogger.log(x);
117 }
118 }
119
120 public void setPropertyName(String propertyName) throws DjenericException
121 {
122 _mediator.setPropertyName(propertyName);
123 }
124
125 public void setViewer(ObjectViewer viewer)
126 {
127 _mediator.setViewer(viewer);
128 }
129
130 public void synchronize() throws DjenericException
131 {
132 setEnabled(_mediator.isComponentWritable());
133 if (isEditable())
134 {
135 try
136 {
137 setSelectedIndex(-1);
138 getEditor().setItem(_mediator.getPropertyValueString());
139 }
140 catch (Exception x)
141 {
142 DjLogger.log(x);
143 }
144 }
145 else
146 {
147 String curVal = _mediator.getPropertyValueString();
148 int idx = -1;
149 if (curVal.length() != 0)
150 {
151 for (int i = 0; i < getItemCount(); i++)
152 {
153 DjDomainValue dv = (DjDomainValue) getItemAt(i);
154
155 if (dv.getValue().equals(curVal))
156 {
157 idx = i;
158 break;
159 }
160 }
161 }
162
163 setSelectedIndex(idx);
164 }
165 }
166
167 public Object getDisplayedValue()
168 {
169 if (getSelectedIndex() != -1) return getEditor().getItem();
170 return null;
171 }
172
173 public String getPropertyName()
174 {
175 return _mediator.getPropertyName();
176 }
177
178 public JComponent getFocussableComponent()
179 {
180 return this;
181 }
182
183 public boolean isComponentWritable()
184 {
185 return _mediator.isComponentWritable();
186 }
187 } |
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