1   /*
2    * Copyright (c) 2003 Sun Microsystems, Inc. All  Rights Reserved.
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5    * modification, are permitted provided that the following conditions
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9    *  notice, this list of conditions and the following disclaimer.
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11   * -Redistribution in binary form must reproduct the above copyright
12   *  notice, this list of conditions and the following disclaimer in
13   *  the documentation and/or other materials provided with the distribution.
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16   * may be used to endorse or promote products derived from this software
17   * without specific prior written permission.
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19   * This software is provided "AS IS," without a warranty of any kind. ALL
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34   */
35  
36  /*
37   * @(#)ListDemo.java    1.11 03/01/23
38   */
39  
40  
41  import javax.swing.*;
42  import javax.swing.event.*;
43  import javax.swing.text.*;
44  import javax.swing.border.*;
45  import javax.swing.colorchooser.*;
46  import javax.swing.filechooser.*;
47  import javax.accessibility.*;
48  
49  import java.awt.*;
50  import java.awt.event.*;
51  import java.beans.*;
52  import java.util.*;
53  import java.io.*;
54  import java.applet.*;
55  import java.net.*;
56  
57  /**
58   * List Demo. This demo shows that it is not
59   * always necessary to have an array of objects
60   * as big as the size of the list stored.
61   *
62   * Indeed, in this example, there is no array
63   * kept for the list data, rather it is generated
64   * on the fly as only those elements are needed.
65   *
66   * @version 1.11 01/23/03
67   * @author Jeff Dinkins
68   */
69  public class ListDemo extends DemoModule {
70      JList list;
71  
72      JPanel prefixList;
73      JPanel suffixList;
74  
75      Action prefixAction;
76      Action suffixAction;
77  
78      GeneratedListModel listModel;
79  
80      Vector checkboxes = new Vector();
81  
82      /**
83       * main method allows us to run as a standalone demo.
84       */
85      public static void main(String[] args) {
86      ListDemo demo = new ListDemo(null);
87      demo.mainImpl();
88      }
89  
90      /**
91       * ListDemo Constructor
92       */
93      public ListDemo(SwingSet2 swingset) {
94      super(swingset, "ListDemo", "toolbar/JList.gif");
95  
96      loadImages();
97  
98      JLabel description = new JLabel(getString("ListDemo.description"));
99      getDemoPanel().add(description, BorderLayout.NORTH);
100 
101     JPanel centerPanel = new JPanel();
102     centerPanel.setLayout(new BoxLayout(centerPanel, BoxLayout.X_AXIS));
103     centerPanel.add(Box.createRigidArea(HGAP10));
104     getDemoPanel().add(centerPanel, BorderLayout.CENTER);
105 
106     JPanel listPanel = new JPanel();
107     listPanel.setLayout(new BoxLayout(listPanel, BoxLayout.Y_AXIS));
108     listPanel.add(Box.createRigidArea(VGAP10));
109 
110     centerPanel.add(listPanel);
111     centerPanel.add(Box.createRigidArea(HGAP30));
112 
113     // Create the list
114     list = new JList();
115     list.setCellRenderer(new CompanyLogoListCellRenderer());
116     listModel = new GeneratedListModel(this);
117     list.setModel(listModel);
118 
119     // Set the preferred row count. This affects the preferredSize
120     // of the JList when it's in a scrollpane.
121     list.setVisibleRowCount(22);
122 
123     // Add list to a scrollpane
124     JScrollPane scrollPane = new JScrollPane(list);
125     listPanel.add(scrollPane);
126     listPanel.add(Box.createRigidArea(VGAP10));
127 
128     // Add the control panel (holds the prefix/suffix list and prefix/suffix checkboxes)
129     JPanel controlPanel = createControlPanel();
130     centerPanel.add(createControlPanel());
131 
132 
133     // create prefixes and suffixes
134     addPrefix("Tera", true);  
135     addPrefix("Micro", false);     
136     addPrefix("Southern", false);       
137     addPrefix("Net", true);   
138     addPrefix("YoYo", true);       
139     addPrefix("Northern", false);       
140     addPrefix("Tele", false); 
141     addPrefix("Eastern", false);   
142     addPrefix("Neo", false);            
143     addPrefix("Digi", false); 
144     addPrefix("National", false);  
145     addPrefix("Compu", true);          
146     addPrefix("Meta", true);  
147     addPrefix("Info", false);      
148     addPrefix("Western", false);        
149     addPrefix("Data", false); 
150     addPrefix("Atlantic", false); 
151     addPrefix("Advanced", false);        
152     addPrefix("Euro", false);      
153     addPrefix("Pacific", false);   
154     addPrefix("Mobile", false);       
155     addPrefix("In", false);        
156     addPrefix("Computa", false);          
157     addPrefix("Digital", false);   
158     addPrefix("Analog", false);       
159 
160     addSuffix("Tech", true);      
161     addSuffix("Soft", true);      
162     addSuffix("Telecom", true);
163     addSuffix("Solutions", false); 
164     addSuffix("Works", true);     
165     addSuffix("Dyne", false);
166     addSuffix("Services", false);  
167     addSuffix("Vers", false);      
168     addSuffix("Devices", false);
169     addSuffix("Software", false);  
170     addSuffix("Serv", false);      
171     addSuffix("Systems", true);
172     addSuffix("Dynamics", true);  
173     addSuffix("Net", false);       
174     addSuffix("Sys", false);
175     addSuffix("Computing", false); 
176     addSuffix("Scape", false);     
177     addSuffix("Com", false);
178     addSuffix("Ware", false);      
179     addSuffix("Widgets", false);   
180     addSuffix("Media", false);     
181     addSuffix("Computer", false);
182     addSuffix("Hardware", false);  
183     addSuffix("Gizmos", false);    
184     addSuffix("Concepts", false);
185     }
186 
187     public JPanel createControlPanel() {
188     JPanel controlPanel = new JPanel() {
189         Insets insets = new Insets(0, 4, 10, 10);
190         public Insets getInsets() {
191         return insets;
192         }
193     };
194     controlPanel.setLayout(new BoxLayout(controlPanel, BoxLayout.X_AXIS));
195 
196     JPanel prefixPanel = new JPanel();
197     prefixPanel.setLayout(new BoxLayout(prefixPanel, BoxLayout.Y_AXIS));
198     prefixPanel.add(new JLabel(getString("ListDemo.prefixes")));
199 
200     JPanel suffixPanel = new JPanel();
201     suffixPanel.setLayout(new BoxLayout(suffixPanel, BoxLayout.Y_AXIS));
202     suffixPanel.add(new JLabel(getString("ListDemo.suffixes")));
203 
204     prefixList = new JPanel() {
205         Insets insets = new Insets(0, 4, 0, 0);
206         public Insets getInsets() {
207         return insets;
208         }
209     };
210     prefixList.setLayout(new BoxLayout(prefixList, BoxLayout.Y_AXIS));
211     JScrollPane scrollPane = new JScrollPane(prefixList);
212         scrollPane.getVerticalScrollBar().setUnitIncrement(10);
213     prefixPanel.add(scrollPane);
214     prefixPanel.add(Box.createRigidArea(HGAP10));
215 
216     suffixList = new JPanel() {
217         Insets insets = new Insets(0, 4, 0, 0);
218         public Insets getInsets() {
219         return insets;
220         }
221     };
222     suffixList.setLayout(new BoxLayout(suffixList, BoxLayout.Y_AXIS));
223     scrollPane = new JScrollPane(suffixList);
224         scrollPane.getVerticalScrollBar().setUnitIncrement(10);
225     suffixPanel.add(scrollPane);
226     suffixPanel.add(Box.createRigidArea(HGAP10));
227 
228     controlPanel.add(prefixPanel);
229     controlPanel.add(Box.createRigidArea(HGAP15));
230     controlPanel.add(suffixPanel);
231     return controlPanel;
232     }
233 
234     public void addPrefix(String prefix, boolean selected) {
235     if(prefixAction == null) {
236         prefixAction = new UpdatePrefixListAction(listModel);
237     }
238     JCheckBox cb = (JCheckBox) prefixList.add(new JCheckBox(prefix));
239     checkboxes.addElement(cb);
240     cb.setSelected(selected);
241     cb.addActionListener(prefixAction);
242     if(selected) {
243         listModel.addPrefix(prefix);
244     }
245     }
246 
247     public void addSuffix(String suffix, boolean selected) {
248     if(suffixAction == null) {
249         suffixAction = new UpdateSuffixListAction(listModel);
250     }
251     JCheckBox cb = (JCheckBox) suffixList.add(new JCheckBox(suffix));
252     checkboxes.addElement(cb);
253     cb.setSelected(selected);
254     cb.addActionListener(suffixAction);
255     if(selected) {
256         listModel.addSuffix(suffix);
257     }
258     }
259 
260     class UpdatePrefixListAction extends AbstractAction {
261     GeneratedListModel listModel;
262         protected UpdatePrefixListAction(GeneratedListModel listModel) {
263         this.listModel = listModel;
264         }
265     
266         public void actionPerformed(ActionEvent e) {
267         JCheckBox cb = (JCheckBox) e.getSource();
268         if(cb.isSelected()) {
269         listModel.addPrefix(cb.getText());
270         } else {
271         listModel.removePrefix(cb.getText());
272         }
273     }
274     }
275 
276     class UpdateSuffixListAction extends AbstractAction {
277     GeneratedListModel listModel;
278         protected UpdateSuffixListAction(GeneratedListModel listModel) {
279         this.listModel = listModel;
280         }
281     
282         public void actionPerformed(ActionEvent e) {
283         JCheckBox cb = (JCheckBox) e.getSource();
284         if(cb.isSelected()) {
285         listModel.addSuffix(cb.getText());
286         } else {
287         listModel.removeSuffix(cb.getText());
288         }
289     }
290     }
291 
292     
293     class GeneratedListModel extends AbstractListModel {
294     ListDemo demo;
295     Permuter permuter;
296 
297     public Vector prefix = new Vector();
298     public Vector suffix = new Vector();
299 
300     public GeneratedListModel (ListDemo demo) {
301         this.demo = demo;
302     }
303 
304     private void update() {
305         permuter = new Permuter(getSize());
306         fireContentsChanged(this, 0, getSize());
307     }
308 
309     public void addPrefix(String s) {
310         if(!prefix.contains(s)) {
311         prefix.addElement(s);
312         update();
313         }
314     }
315 
316     public void removePrefix(String s) {
317         prefix.removeElement(s);
318         update();
319     }
320 
321     public void addSuffix(String s) {
322         if(!suffix.contains(s)) {
323         suffix.addElement(s);
324         update();
325         }
326     }
327 
328     public void removeSuffix(String s) {
329         suffix.removeElement(s);
330         update();
331     }
332 
333     public int getSize() {
334         return prefix.size() * suffix.size();
335     }
336 
337     public Object getElementAt(int index) {
338         if(permuter == null) {
339         update();
340         }
341         // morph the index to another int -- this has the benefit of
342         // causing the list to look random.
343         int j = permuter.map(index);
344         int ps = prefix.size();
345         int ss = suffix.size();
346         return (String) prefix.elementAt(j%ps) + (String) suffix.elementAt((j/ps)%ss);
347     }
348     }
349 
350     ImageIcon images[] = new ImageIcon[7];
351     void loadImages() {
352         images[0] = createImageIcon("list/red.gif",  getString("ListDemo.red"));
353         images[1] = createImageIcon("list/blue.gif",  getString("ListDemo.blue"));
354         images[2] = createImageIcon("list/yellow.gif",  getString("ListDemo.yellow"));
355         images[3] = createImageIcon("list/green.gif",  getString("ListDemo.green"));
356         images[4] = createImageIcon("list/gray.gif",  getString("ListDemo.gray"));
357         images[5] = createImageIcon("list/cyan.gif",  getString("ListDemo.cyan"));
358         images[6] = createImageIcon("list/magenta.gif",  getString("ListDemo.magenta"));
359     }
360 
361     class CompanyLogoListCellRenderer extends DefaultListCellRenderer {
362        public Component getListCellRendererComponent(
363             JList list,
364             Object value,
365             int index,
366             boolean isSelected,
367             boolean cellHasFocus)
368         {
369             Component retValue = super.getListCellRendererComponent(
370         list, value, index, isSelected, cellHasFocus
371         );
372             setIcon(images[index%7]);
373         return retValue;
374         }
375     }
376 
377 
378 }
379