DateComboBox


1   package hero.client.grapheditor;
2   
3   
4   import java.awt.*;
5   import java.awt.event.*;
6   import java.util.Calendar  ;
7   import java.text.SimpleDateFormat  ;
8   
9   import javax.swing.*;
10  import javax.swing.event.PopupMenuListener  ;
11  import javax.swing.event.PopupMenuEvent  ;
12  import javax.swing.plaf.ComboBoxUI  ;
13  import javax.swing.plaf.basic.ComboPopup  ;
14  import javax.swing.plaf.metal.MetalComboBoxUI  ;
15  import javax.swing.border.Border  ;
16  import javax.swing.border.EtchedBorder  ;
17  import javax.swing.border.EmptyBorder  ;
18  
19  import com.sun.java.swing.plaf.motif.MotifComboBoxUI;
20  import com.sun.java.swing.plaf.windows.WindowsComboBoxUI;
21  
22  /**
23   * @version 1.0 11/02/2000
24   */  
25  
26  //////////////////////////////////////////////////////////////
27  
28  public class DateComboBox extends JComboBox {
29  
30  static java.util.ResourceBundle   resource = java.util.ResourceBundle.getBundle("resources.Traduction")/*#BundleType=List*/;
31  
32      protected SimpleDateFormat   dateFormat = new SimpleDateFormat  ("MMM d, yyyy");
33      public void setDateFormat(SimpleDateFormat   dateFormat) {
34      this.dateFormat = dateFormat;
35      }
36      public void setSelectedItem(Object   item) {
37      // Could put extra logic here or in renderer when item is instanceof Date, Calendar, or String
38      // Dont keep a list ... just the currently selected item
39      removeAllItems(); // hides the popup if visible
40      addItem(item);
41      super.setSelectedItem(item);
42      }
43  
44      public void updateUI() {
45      ComboBoxUI   cui = (ComboBoxUI  ) UIManager.getUI(this);
46      if (cui instanceof MetalComboBoxUI  ) {
47          cui = new MetalDateComboBoxUI();
48      } else if (cui instanceof MotifComboBoxUI) {
49          cui = new MotifDateComboBoxUI();        
50      } else if (cui instanceof WindowsComboBoxUI) {
51          cui = new WindowsDateComboBoxUI();
52      }
53          setUI(cui);
54      }
55  
56      // Inner classes are used purely to keep DateComboBox component in one file
57      //////////////////////////////////////////////////////////////
58      // UI Inner classes -- one for each supported Look and Feel
59      //////////////////////////////////////////////////////////////
60  
61      class MetalDateComboBoxUI extends MetalComboBoxUI   {
62      protected ComboPopup   createPopup() {
63          return new DatePopup( comboBox );
64      }
65      }
66  
67      class WindowsDateComboBoxUI extends WindowsComboBoxUI {
68      protected ComboPopup   createPopup() {
69          return new DatePopup( comboBox );
70      }
71      }
72  
73      class MotifDateComboBoxUI extends MotifComboBoxUI {
74      protected ComboPopup   createPopup() {
75          return new DatePopup( comboBox );
76      }
77      }
78  
79      //////////////////////////////////////////////////////////////
80      // DatePopup inner class
81      //////////////////////////////////////////////////////////////
82  
83      class DatePopup implements ComboPopup  , MouseMotionListener, 
84                     MouseListener, KeyListener, PopupMenuListener   {
85      
86      protected JComboBox comboBox;
87      protected Calendar   calendar;
88      protected JPopupMenu popup;
89      protected JLabel monthLabel;
90      protected JPanel days = null;
91      protected SimpleDateFormat   monthFormat = new SimpleDateFormat  ("MMM yyyy");
92  
93      protected Color selectedBackground;
94      protected Color selectedForeground;
95      protected Color background;
96      protected Color foreground;
97  
98      public DatePopup(JComboBox comboBox) {
99          this.comboBox = comboBox;
100         calendar = Calendar.getInstance();
101         // check Look and Feel
102         background = UIManager.getColor("ComboBox.background");
103         foreground = UIManager.getColor("ComboBox.foreground");
104         selectedBackground = UIManager.getColor("ComboBox.selectionBackground");
105         selectedForeground = UIManager.getColor("ComboBox.selectionForeground");
106 
107         initializePopup();
108     }
109 
110     //========================================
111     // begin ComboPopup method implementations
112     //
113         public void show() {
114         try {
115         // if setSelectedItem() was called with a valid date, adjust the calendar
116         calendar.setTime( dateFormat.parse( comboBox.getSelectedItem().toString() ) );
117         } catch (Exception   e) {}
118         updatePopup(); 
119         popup.show(comboBox, 0, comboBox.getHeight());
120         }
121     
122     public void hide() {
123         popup.setVisible(false);
124     }
125 
126     protected JList list = new JList();
127     public JList getList() {
128         return list;
129     }
130 
131     public MouseListener getMouseListener() {
132         return this;
133     }
134 
135     public MouseMotionListener getMouseMotionListener() {
136         return this;
137     }
138 
139     public KeyListener getKeyListener() {
140         return this;
141     }
142 
143     public boolean isVisible() {
144         return popup.isVisible();
145     }
146     
147     public void uninstallingUI() {
148         popup.removePopupMenuListener(this);
149     }
150 
151     //
152     // end ComboPopup method implementations
153     //======================================
154 
155 
156 
157     //===================================================================
158     // begin Event Listeners
159     //
160 
161     // MouseListener
162 
163     public void mousePressed( MouseEvent e ) {}
164         public void mouseReleased( MouseEvent e ) {}
165     // something else registered for MousePressed
166     public void mouseClicked(MouseEvent e) {
167             if ( !SwingUtilities.isLeftMouseButton(e) )
168                 return;
169             if ( !comboBox.isEnabled() )
170                 return;
171         if ( comboBox.isEditable() ) {
172         comboBox.getEditor().getEditorComponent().requestFocus();
173         } else {
174         comboBox.requestFocus();
175         }
176         togglePopup();
177     }
178 
179     protected boolean mouseInside = false;
180     public void mouseEntered(MouseEvent e) {
181         mouseInside = true;
182     }
183     public void mouseExited(MouseEvent e) {
184         mouseInside = false;
185     }
186 
187     // MouseMotionListener
188     public void mouseDragged(MouseEvent e) {}
189     public void mouseMoved(MouseEvent e) {}
190            
191     // KeyListener
192     public void keyPressed(KeyEvent e) {}
193     public void keyTyped(KeyEvent e) {}           
194     public void keyReleased( KeyEvent e ) {
195         if ( e.getKeyCode() == KeyEvent.VK_SPACE ||
196          e.getKeyCode() == KeyEvent.VK_ENTER ) {
197         togglePopup();
198         }
199     }
200 
201     /**
202      * Variables hideNext and mouseInside are used to 
203      * hide the popupMenu by clicking the mouse in the JComboBox
204      */
205     public void popupMenuCanceled(PopupMenuEvent   e) {}
206     protected boolean hideNext = false;
207     public void popupMenuWillBecomeInvisible(PopupMenuEvent   e) {
208         hideNext = mouseInside;
209     }
210     public void popupMenuWillBecomeVisible(PopupMenuEvent   e) {}
211            
212     //
213     // end Event Listeners
214     //=================================================================
215 
216     //===================================================================
217     // begin Utility methods
218     //
219 
220     protected void togglePopup() {
221         if ( isVisible() || hideNext ) { 
222         hide();
223         } else {
224         show();
225         }
226         hideNext = false;
227     }
228 
229     //
230     // end Utility methods
231     //=================================================================
232 
233     // Note *** did not use JButton because Popup closes when pressed
234     protected JLabel createUpdateButton(final int field, final int amount) {
235         final JLabel label = new JLabel();
236         final Border   selectedBorder = new EtchedBorder  ();
237         final Border   unselectedBorder = new EmptyBorder  (selectedBorder.getBorderInsets(new JLabel()));
238         label.setBorder(unselectedBorder);
239         label.setForeground(foreground);
240         label.addMouseListener(new MouseAdapter() {
241             public void mouseReleased(MouseEvent e) {
242             calendar.add(field, amount);
243             updatePopup();
244             }
245             public void mouseEntered(MouseEvent e) {
246             label.setBorder(selectedBorder);
247             }
248             public void mouseExited(MouseEvent e) {
249             label.setBorder(unselectedBorder);
250             }
251         });
252         return label;
253     }
254 
255 
256     protected void initializePopup() {
257         JPanel header = new JPanel(); // used Box, but it wasn't Opaque
258         header.setLayout(new BoxLayout(header, BoxLayout.X_AXIS));
259         header.setBackground(background);
260         header.setOpaque(true);
261 
262         JLabel label;
263         label = createUpdateButton(Calendar.YEAR, -1);
264         label.setText("<<");
265         label.setToolTipText(resource.getString("datecombobox.prevyear"));
266 
267         header.add(Box.createHorizontalStrut(12));
268         header.add(label);
269         header.add(Box.createHorizontalStrut(12));
270 
271         label = createUpdateButton(Calendar.MONTH, -1);
272         label.setText("<");
273         label.setToolTipText(resource.getString("datecombobox.prevmonth"));
274         header.add(label);
275 
276         monthLabel = new JLabel("", JLabel.CENTER);
277         monthLabel.setForeground(foreground);
278         header.add(Box.createHorizontalGlue());
279         header.add(monthLabel);
280         header.add(Box.createHorizontalGlue());
281 
282         label = createUpdateButton(Calendar.MONTH, 1);
283         label.setText(">");
284         label.setToolTipText(resource.getString("datecombobox.nextmonth"));
285         header.add(label);
286 
287         label = createUpdateButton(Calendar.YEAR, 1);
288         label.setText(">>");
289         label.setToolTipText(resource.getString("datecombobox.nextyear"));
290 
291         header.add(Box.createHorizontalStrut(12));
292         header.add(label);
293         header.add(Box.createHorizontalStrut(12));
294 
295         popup = new JPopupMenu();
296         popup.setBorder(BorderFactory.createLineBorder(Color.black));
297         popup.setLayout(new BorderLayout());
298         popup.setBackground(background);
299         popup.addPopupMenuListener(this);
300         popup.add(BorderLayout.NORTH, header);
301     }
302 
303     // update the Popup when either the month or the year of the calendar has been changed
304     protected void updatePopup() {
305         monthLabel.setText( monthFormat.format(calendar.getTime()) );
306         if (days != null) {
307         popup.remove(days);
308         }
309         days = new JPanel(new GridLayout(0, 7));
310         days.setBackground(background);
311         days.setOpaque(true);
312 
313         Calendar   setupCalendar = (Calendar  ) calendar.clone();
314         setupCalendar.set(Calendar.DAY_OF_WEEK, setupCalendar.getFirstDayOfWeek());
315         for (int i = 0; i < 7; i++) {
316         int dayInt = setupCalendar.get(Calendar.DAY_OF_WEEK);
317         JLabel label = new JLabel();
318         label.setHorizontalAlignment(JLabel.CENTER);
319         label.setForeground(foreground);
320         if (dayInt == Calendar.SUNDAY) {
321             label.setText(resource.getString("datecombobox.sun"));
322         } else if (dayInt == Calendar.MONDAY) {
323             label.setText(resource.getString("datecombobox.mon"));
324         } else if (dayInt == Calendar.TUESDAY) {
325             label.setText(resource.getString("datecombobox.tue"));
326         } else if (dayInt == Calendar.WEDNESDAY) {
327             label.setText(resource.getString("datecombobox.wed"));
328         } else if (dayInt == Calendar.THURSDAY) {
329             label.setText(resource.getString("datecombobox.thu"));
330         } else if (dayInt == Calendar.FRIDAY) {
331             label.setText(resource.getString("datecombobox.fri"));
332         } else if (dayInt == Calendar.SATURDAY){
333             label.setText(resource.getString("datecombobox.sat"));
334         }
335         days.add(label);
336         setupCalendar.roll(Calendar.DAY_OF_WEEK, true);
337         }
338 
339         setupCalendar = (Calendar  ) calendar.clone();
340         setupCalendar.set(Calendar.DAY_OF_MONTH, 1);
341         int first = setupCalendar.get(Calendar.DAY_OF_WEEK);
342         for (int i = 0; i < (first - 1); i++) {
343         days.add(new JLabel(""));       
344         }
345         for (int i = 1; i <= setupCalendar.getActualMaximum(Calendar.DAY_OF_MONTH); i++) {    
346         final int day = i;
347         final JLabel label = new JLabel(String.valueOf(day));
348         label.setHorizontalAlignment(JLabel.CENTER);
349         label.setForeground(foreground);
350         label.addMouseListener(new MouseListener() {
351             public void mousePressed(MouseEvent e) {}
352             public void mouseClicked(MouseEvent e) {}
353             public void mouseReleased(MouseEvent e) {
354                 label.setOpaque(false);
355                 label.setBackground(background);
356                 label.setForeground(foreground);
357                 calendar.set(Calendar.DAY_OF_MONTH, day);
358                 comboBox.setSelectedItem(dateFormat.format(calendar.getTime()));
359                 // hide();
360                 // hide is called with setSelectedItem() ... removeAll()
361                 comboBox.requestFocus();
362             }
363             public void mouseEntered(MouseEvent e) {
364                 label.setOpaque(true);
365                 label.setBackground(selectedBackground);
366                 label.setForeground(selectedForeground);
367             }
368             public void mouseExited(MouseEvent e) {
369                 label.setOpaque(false);
370                 label.setBackground(background);
371                 label.setForeground(foreground);
372             }
373             });
374 
375         days.add(label);
376         }
377         
378         popup.add(BorderLayout.CENTER, days);
379         popup.pack();       
380     }
381     }
382 
383     //////////////////////////////////////////////////////////////
384     // This is only included to provide a sample GUI
385     //////////////////////////////////////////////////////////////
386     public static void main(String   args[]) {
387     JFrame f = new JFrame();
388     Container c = f.getContentPane();
389     c.setLayout(new FlowLayout());
390     c.add(new JLabel("Date 1:"));
391     c.add(new DateComboBox());
392     c.add(new JLabel("Date 2:"));
393     DateComboBox dcb = new DateComboBox();
394     dcb.setEditable(true);
395     c.add(dcb);
396     f.addWindowListener(new WindowAdapter() {
397         public void windowClosing(WindowEvent e) {
398             System.exit(0);
399         }
400         });
401     f.setSize(500, 200);
402     f.show();
403     }
404 
405 }
406 
407 
408     
409 
410 
411
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