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42 import javax.swing.*;
43 import javax.swing.event.*;
44 import javax.swing.text.*;
45 import javax.swing.border.*;
46 import javax.swing.colorchooser.*;
47 import javax.swing.filechooser.*;
48 import javax.accessibility.*;
49
50 import java.awt.*;
51 import java.awt.event.*;
52 import java.beans.*;
53 import java.util.*;
54 import java.io.*;
55 import java.applet.*;
56 import java.net.*;
57
58
70 public class ListDemo extends DemoModule {
71 JList list;
72
73 JPanel prefixList;
74 JPanel suffixList;
75
76 Action prefixAction;
77 Action suffixAction;
78
79 GeneratedListModel listModel;
80
81 Vector checkboxes = new Vector();
82
83
86 public static void main(String  [] args) {
87 ListDemo demo = new ListDemo(null);
88 demo.mainImpl();
89 }
90
91
94 public ListDemo(SwingSet2 swingset) {
95 super(swingset, "ListDemo", "toolbar/JList.gif");
96
97 loadImages();
98
99 JLabel description = new JLabel(getString("ListDemo.description"));
100 getDemoPanel().add(description, BorderLayout.NORTH);
101
102 JPanel centerPanel = new JPanel();
103 centerPanel.setLayout(new BoxLayout(centerPanel, BoxLayout.X_AXIS));
104 centerPanel.add(Box.createRigidArea(HGAP10));
105 getDemoPanel().add(centerPanel, BorderLayout.CENTER);
106
107 JPanel listPanel = new JPanel();
108 listPanel.setLayout(new BoxLayout(listPanel, BoxLayout.Y_AXIS));
109 listPanel.add(Box.createRigidArea(VGAP10));
110
111 centerPanel.add(listPanel);
112 centerPanel.add(Box.createRigidArea(HGAP30));
113
114 list = new JList();
116 list.setCellRenderer(new CompanyLogoListCellRenderer());
117 listModel = new GeneratedListModel(this);
118 list.setModel(listModel);
119
120 list.setVisibleRowCount(22);
123
124 JScrollPane scrollPane = new JScrollPane(list);
126 listPanel.add(scrollPane);
127 listPanel.add(Box.createRigidArea(VGAP10));
128
129 centerPanel.add(createControlPanel());
131
132 addPrefix("Tera", true);
134 addPrefix("Micro", false);
135 addPrefix("Southern", false);
136 addPrefix("Net", true);
137 addPrefix("YoYo", true);
138 addPrefix("Northern", false);
139 addPrefix("Tele", false);
140 addPrefix("Eastern", false);
141 addPrefix("Neo", false);
142 addPrefix("Digi", false);
143 addPrefix("National", false);
144 addPrefix("Compu", true);
145 addPrefix("Meta", true);
146 addPrefix("Info", false);
147 addPrefix("Western", false);
148 addPrefix("Data", false);
149 addPrefix("Atlantic", false);
150 addPrefix("Advanced", false);
151 addPrefix("Euro", false);
152 addPrefix("Pacific", false);
153 addPrefix("Mobile", false);
154 addPrefix("In", false);
155 addPrefix("Computa", false);
156 addPrefix("Digital", false);
157 addPrefix("Analog", false);
158
159 addSuffix("Tech", true);
160 addSuffix("Soft", true);
161 addSuffix("Telecom", true);
162 addSuffix("Solutions", false);
163 addSuffix("Works", true);
164 addSuffix("Dyne", false);
165 addSuffix("Services", false);
166 addSuffix("Vers", false);
167 addSuffix("Devices", false);
168 addSuffix("Software", false);
169 addSuffix("Serv", false);
170 addSuffix("Systems", true);
171 addSuffix("Dynamics", true);
172 addSuffix("Net", false);
173 addSuffix("Sys", false);
174 addSuffix("Computing", false);
175 addSuffix("Scape", false);
176 addSuffix("Com", false);
177 addSuffix("Ware", false);
178 addSuffix("Widgets", false);
179 addSuffix("Media", false);
180 addSuffix("Computer", false);
181 addSuffix("Hardware", false);
182 addSuffix("Gizmos", false);
183 addSuffix("Concepts", false);
184 }
185
186 void updateDragEnabled(boolean dragEnabled) {
187 list.setDragEnabled(dragEnabled);
188 }
189
190 public JPanel createControlPanel() {
191 JPanel controlPanel = new JPanel() {
192 Insets insets = new Insets(0, 4, 10, 10);
193 public Insets getInsets() {
194 return insets;
195 }
196 };
197 controlPanel.setLayout(new BoxLayout(controlPanel, BoxLayout.X_AXIS));
198
199 JPanel prefixPanel = new JPanel();
200 prefixPanel.setLayout(new BoxLayout(prefixPanel, BoxLayout.Y_AXIS));
201 prefixPanel.add(new JLabel(getString("ListDemo.prefixes")));
202
203 JPanel suffixPanel = new JPanel();
204 suffixPanel.setLayout(new BoxLayout(suffixPanel, BoxLayout.Y_AXIS));
205 suffixPanel.add(new JLabel(getString("ListDemo.suffixes")));
206
207 prefixList = new JPanel() {
208 Insets insets = new Insets(0, 4, 0, 0);
209 public Insets getInsets() {
210 return insets;
211 }
212 };
213 prefixList.setLayout(new BoxLayout(prefixList, BoxLayout.Y_AXIS));
214 JScrollPane scrollPane = new JScrollPane(prefixList);
215 scrollPane.getVerticalScrollBar().setUnitIncrement(10);
216 prefixPanel.add(scrollPane);
217 prefixPanel.add(Box.createRigidArea(HGAP10));
218
219 suffixList = new JPanel() {
220 Insets insets = new Insets(0, 4, 0, 0);
221 public Insets getInsets() {
222 return insets;
223 }
224 };
225 suffixList.setLayout(new BoxLayout(suffixList, BoxLayout.Y_AXIS));
226 scrollPane = new JScrollPane(suffixList);
227 scrollPane.getVerticalScrollBar().setUnitIncrement(10);
228 suffixPanel.add(scrollPane);
229 suffixPanel.add(Box.createRigidArea(HGAP10));
230
231 controlPanel.add(prefixPanel);
232 controlPanel.add(Box.createRigidArea(HGAP15));
233 controlPanel.add(suffixPanel);
234 return controlPanel;
235 }
236
237 private FocusListener listFocusListener = new FocusAdapter() {
238 public void focusGained(FocusEvent e) {
239 JComponent c = (JComponent)e.getComponent();
240 c.scrollRectToVisible(new Rectangle(0, 0, c.getWidth(), c.getHeight()));
241 }
242 };
243
244 public void addPrefix(String prefix, boolean selected) {
245 if(prefixAction == null) {
246 prefixAction = new UpdatePrefixListAction(listModel);
247 }
248 final JCheckBox cb = (JCheckBox) prefixList.add(new JCheckBox(prefix));
249 checkboxes.addElement(cb);
250 cb.setSelected(selected);
251 cb.addActionListener(prefixAction);
252 if(selected) {
253 listModel.addPrefix(prefix);
254 }
255 cb.addFocusListener(listFocusListener);
256 }
257
258 public void addSuffix(String suffix, boolean selected) {
259 if(suffixAction == null) {
260 suffixAction = new UpdateSuffixListAction(listModel);
261 }
262 final JCheckBox cb = (JCheckBox) suffixList.add(new JCheckBox(suffix));
263 checkboxes.addElement(cb);
264 cb.setSelected(selected);
265 cb.addActionListener(suffixAction);
266 if(selected) {
267 listModel.addSuffix(suffix);
268 }
269 cb.addFocusListener(listFocusListener);
270 }
271
272 class UpdatePrefixListAction extends AbstractAction {
273 GeneratedListModel listModel;
274 protected UpdatePrefixListAction(GeneratedListModel listModel) {
275 this.listModel = listModel;
276 }
277
278 public void actionPerformed(ActionEvent e) {
279 JCheckBox cb = (JCheckBox) e.getSource();
280 if(cb.isSelected()) {
281 listModel.addPrefix(cb.getText());
282 } else {
283 listModel.removePrefix(cb.getText());
284 }
285 }
286 }
287
288 class UpdateSuffixListAction extends AbstractAction {
289 GeneratedListModel listModel;
290 protected UpdateSuffixListAction(GeneratedListModel listModel) {
291 this.listModel = listModel;
292 }
293
294 public void actionPerformed(ActionEvent e) {
295 JCheckBox cb = (JCheckBox) e.getSource();
296 if(cb.isSelected()) {
297 listModel.addSuffix(cb.getText());
298 } else {
299 listModel.removeSuffix(cb.getText());
300 }
301 }
302 }
303
304
305 class GeneratedListModel extends AbstractListModel {
306 ListDemo demo;
307 Permuter permuter;
308
309 public Vector prefix = new Vector();
310 public Vector suffix = new Vector();
311
312 public GeneratedListModel (ListDemo demo) {
313 this.demo = demo;
314 }
315
316 private void update() {
317 permuter = new Permuter(getSize());
318 fireContentsChanged(this, 0, getSize());
319 }
320
321 public void addPrefix(String s) {
322 if(!prefix.contains(s)) {
323 prefix.addElement(s);
324 update();
325 }
326 }
327
328 public void removePrefix(String s) {
329 prefix.removeElement(s);
330 update();
331 }
332
333 public void addSuffix(String s) {
334 if(!suffix.contains(s)) {
335 suffix.addElement(s);
336 update();
337 }
338 }
339
340 public void removeSuffix(String s) {
341 suffix.removeElement(s);
342 update();
343 }
344
345 public int getSize() {
346 return prefix.size() * suffix.size();
347 }
348
349 public Object getElementAt(int index) {
350 if(permuter == null) {
351 update();
352 }
353 int j = permuter.map(index);
356 int ps = prefix.size();
357 int ss = suffix.size();
358 return (String ) prefix.elementAt(j%ps) + (String ) suffix.elementAt((j/ps)%ss);
359 }
360 }
361
362 ImageIcon images[] = new ImageIcon[7];
363 void loadImages() {
364 images[0] = createImageIcon("list/red.gif", getString("ListDemo.red"));
365 images[1] = createImageIcon("list/blue.gif", getString("ListDemo.blue"));
366 images[2] = createImageIcon("list/yellow.gif", getString("ListDemo.yellow"));
367 images[3] = createImageIcon("list/green.gif", getString("ListDemo.green"));
368 images[4] = createImageIcon("list/gray.gif", getString("ListDemo.gray"));
369 images[5] = createImageIcon("list/cyan.gif", getString("ListDemo.cyan"));
370 images[6] = createImageIcon("list/magenta.gif", getString("ListDemo.magenta"));
371 }
372
373 class CompanyLogoListCellRenderer extends DefaultListCellRenderer {
374 public Component getListCellRendererComponent(
375 JList list,
376 Object value,
377 int index,
378 boolean isSelected,
379 boolean cellHasFocus)
380 {
381 Component retValue = super.getListCellRendererComponent(
382 list, value, index, isSelected, cellHasFocus
383 );
384 setIcon(images[index%7]);
385 return retValue;
386 }
387 }
388 }
389
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