1. 如何对事件进行管理,可以查看这个 http://my.oschina.net/abian/blog/497296
截图:
1package unit; 2 3import java.awt.BorderLayout; 4import java.awt.Color; 5import java.awt.Dimension; 6import java.awt.Font; 7import java.awt.GridLayout; 8import java.awt.event.ActionEvent; 9import java.awt.event.ActionListener; 10import java.text.SimpleDateFormat; 11import java.util.Calendar; 12import java.util.EventListener; 13import java.util.GregorianCalendar; 14import javax.swing.BorderFactory; 15import javax.swing.Box; 16import javax.swing.JButton; 17import javax.swing.JComboBox; 18import javax.swing.JFrame; 19import javax.swing.JLabel; 20import javax.swing.JPanel; 21import javax.swing.SwingConstants; 22import javax.swing.event.EventListenerList; 23 24/** 25 * 日期选择器 采用触发事件的方式,这样的话,就可以将DateChooser添加到任何组件之上, 26 * 任何组件都可以捕获日期选择的事件,然后进行相应处理 27 * 28 * @author changwen 29 * @date Aug 26, 2015 30 */ 31 32@SuppressWarnings("all") 33public class DateChooser extends JPanel { 34 35 protected Color weekBackgroundColor = new Color(189, 235, 238); 36 protected Color weekendBtnFontColor = new Color(240, 64, 64); // color 37 protected Color selectedColor = weekBackgroundColor; 38 protected Font labelFont = new Font("Arial", Font.PLAIN, 10); 39 protected Color defaultBtnFontColor = Color.BLACK; 40 protected Color defaultBtnBackgroundColor = Color.WHITE; 41 private Calendar cal = null; 42 private Calendar todayCal = null; 43 private int year; 44 private int month; 45 private int day; 46 private JPanel controllPanel = null; 47 private JPanel dateContainerPanel = null; 48 private JLabel todayLabel = null; 49 protected DateButton[][] buttonDays = null; 50 public JComboBox monthChoice; 51 public JComboBox yearChoice; 52 protected String[] weekTitle = { "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat" }; 53 protected int[] months = new int[] { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12 }; 54 private EventListenerList actionListenerList = new EventListenerList(); 55 56 public DateChooser() { 57 buttonDays = new DateButton[6][7]; 58 cal = Calendar.getInstance(); 59 todayCal = Calendar.getInstance(); 60 this.year = cal.get(Calendar.YEAR); 61 this.month = cal.get(Calendar.MONTH); 62 this.day = cal.get(Calendar.DATE); 63 JPanel oprPanel = createControlPanel(); 64 this.setLayout(new BorderLayout(0, 0)); 65 dateContainerPanel = new JPanel(); 66 createDayPanel(cal); 67 setActiveDay(day); 68 this.add(oprPanel, BorderLayout.NORTH); 69 this.add(dateContainerPanel, BorderLayout.CENTER); 70 71 } 72 73 @SuppressWarnings("all") 74 public JPanel createControlPanel() { 75 controllPanel = new JPanel(); 76 controllPanel.setBackground(Color.WHITE); 77 Box hBox = Box.createHorizontalBox(); 78 String strToday = formatDate(todayCal); 79 todayLabel = new JLabel(strToday); 80 monthChoice = new JComboBox(); 81 for (int i = 0; i < months.length; i++) { 82 monthChoice.addItem(months[i]); 83 } 84 85 monthChoice.setSelectedItem(months[month]); 86 monthChoice.setPreferredSize(new Dimension(monthChoice.getPreferredSize().width, 87 monthChoice.getPreferredSize().height)); 88 89 monthChoice.addActionListener(new ActionListener() { 90 public void actionPerformed(ActionEvent ae) { 91 int i = monthChoice.getSelectedIndex(); 92 if (i >= 0) { 93 month = i; 94 Calendar cal = new GregorianCalendar(year, month, 1); 95 year = cal.get(Calendar.YEAR); 96 month = cal.get(Calendar.MONTH); 97 createDayPanel(cal); 98 } 99 } 100 }); 101 int currentYear = todayCal.get(Calendar.YEAR); 102 final int gapYears = 10; 103 yearChoice = new JComboBox(); 104 for (int i = currentYear - gapYears; i < currentYear + gapYears; i++) { 105 yearChoice.addItem(i); 106 } 107 108 yearChoice.setSelectedIndex(gapYears); 109 yearChoice.setPreferredSize(new Dimension(yearChoice.getPreferredSize().width, 110 yearChoice.getPreferredSize().height)); 111 112 yearChoice.addActionListener(new ActionListener() { 113 public void actionPerformed(ActionEvent ae) { 114 System.out.println(yearChoice.getSelectedIndex()); 115 if (yearChoice.getSelectedIndex() != gapYears) { 116 Integer selYear = (Integer) yearChoice.getSelectedItem(); 117 Calendar cal = new GregorianCalendar(year, month, 1); 118 cal.set(Calendar.YEAR, selYear); 119 year = cal.get(Calendar.YEAR); 120 month = cal.get(Calendar.MONTH); 121 createDayPanel(cal); 122 } 123 } 124 }); 125 126 hBox.add(todayLabel); 127 hBox.add(Box.createHorizontalStrut(5)); 128 hBox.add(monthChoice); 129 hBox.add(Box.createHorizontalStrut(8)); 130 hBox.add(yearChoice); 131 hBox.add(Box.createHorizontalStrut(8)); 132 133 controllPanel.add(hBox, BorderLayout.NORTH); 134 return controllPanel; 135 136 } 137 138 /** 139 * 创建日期组件 140 * 141 * @param cal 142 * void 143 */ 144 public void createDayPanel(Calendar cal) { 145 dateContainerPanel.removeAll(); 146 dateContainerPanel.revalidate(); 147 cal.set(Calendar.DAY_OF_MONTH, 1); 148 cal.add(Calendar.MONTH, 1); 149 cal.add(Calendar.DAY_OF_MONTH, -1); 150 int weeks = cal.get(Calendar.WEEK_OF_MONTH); 151 152 GridLayout grid = new GridLayout(7, 7, 0, 0); 153 dateContainerPanel.setLayout(grid); 154 cal.set(Calendar.DAY_OF_MONTH, 1); 155 int weekday = cal.get(Calendar.DAY_OF_WEEK); 156 System.out.println("weekday+" + weekday); 157 cal.add(Calendar.DAY_OF_MONTH, 1 - weekday); 158 System.out.println("Calendar.DAY_OF_MONTH=" + cal.get(Calendar.DAY_OF_MONTH)); 159 160 for (int i = 0; i < 7; i++) { 161 JLabel weekLabel = new JLabel(weekTitle[i], SwingConstants.CENTER); 162 weekLabel.setFont(labelFont); 163 weekLabel.setOpaque(true); 164 weekLabel.setBackground(weekBackgroundColor); 165 dateContainerPanel.add(weekLabel); 166 } 167 DayButtonActionListener dayButtonActionListener = new DayButtonActionListener(); 168 169 for (int i = 0; i < 6; i++) { 170 for (int j = 0; j < 7; j++) { 171 int curMonth = cal.get(Calendar.MONTH); 172 DateButton button = null; 173 if (curMonth != month) { 174 button = new DateButton(" "); 175 button.setEnabled(false); 176 button.setBackground(defaultBtnBackgroundColor); 177 } else { 178 int currentDay = cal.get(Calendar.DAY_OF_MONTH); 179 button = new DateButton(currentDay + ""); 180 button.setHorizontalTextPosition(SwingConstants.RIGHT); 181 button.setFont(labelFont); 182 button.setBackground(defaultBtnBackgroundColor); 183 button.setSelectedBackground(weekBackgroundColor); 184 if (currentDay == todayCal.get(Calendar.DAY_OF_MONTH) && month == todayCal.get(Calendar.MONTH) 185 && year == todayCal.get(Calendar.YEAR)) { 186 button.setBorder(BorderFactory.createLineBorder(weekendBtnFontColor)); 187 } 188 if (cal.get(Calendar.MONTH) != month) { 189 button.setForeground(Color.BLUE); 190 } 191 if (j == 0 || j == 6) { 192 button.setForeground(weekendBtnFontColor); 193 } else { 194 button.setForeground(defaultBtnFontColor); 195 } 196 197 } 198 button.addActionListener(dayButtonActionListener); 199 buttonDays[i][j] = button; 200 dateContainerPanel.add(buttonDays[i][j]); 201 cal.add(Calendar.DAY_OF_MONTH, 1); 202 } 203 } 204 205 } 206 207 /** 208 * 选中莫一天 209 * 210 * @param selectedDay 211 * void 212 */ 213 public void setActiveDay(int selectedDay) { 214 clearAllActiveDay(); 215 if (selectedDay <= 0) { 216 day = new GregorianCalendar().get(Calendar.DAY_OF_MONTH); 217 } else { 218 day = selectedDay; 219 } 220 int leadGap = new GregorianCalendar(year, month, 1).get(Calendar.DAY_OF_WEEK) - 1; 221 JButton selectedButton = buttonDays[(leadGap + selectedDay - 1) / 7][(leadGap + selectedDay - 1) % 7]; 222 selectedButton.setBackground(weekBackgroundColor); 223 } 224 225 /** 226 * 清除所有选择的日期 227 * 228 */ 229 public void clearAllActiveDay() { 230 for (int i = 0; i < 6; i++) { 231 for (int j = 0; j < 7; j++) { 232 JButton button = buttonDays[i][j]; 233 if (button.getText() != null && button.getText().trim().length() > 0) { 234 button.setBackground(defaultBtnBackgroundColor); 235 button.revalidate(); 236 } 237 } 238 239 } 240 } 241 242 /** 243 * 获取选中的日期 244 * 245 * @return String 246 */ 247 public String getSelectedDate() { 248 Calendar cal = new GregorianCalendar(year, month, day); 249 return formatDate(cal); 250 } 251 252 private String formatDate(Calendar cal) { 253 String pattern = "MM-dd-yyyy"; 254 SimpleDateFormat dateFormat = new SimpleDateFormat(pattern); 255 return dateFormat.format(cal.getTime()); 256 } 257 258 class DayButtonActionListener implements ActionListener { 259 public void actionPerformed(ActionEvent e) { 260 JButton button = (JButton) e.getSource(); 261 if (button.getText() != null && button.getText().trim().length() > 0) { 262 day = Integer.parseInt(button.getText()); 263 setActiveDay(day); 264 fireActionPerformed(e);// fire button click event 265 /** 266 * 采用触发事件的方式,这样的话,就可以将DateChooser添加到任何组件之上, 267 * 任何组件都可以捕获日期选择的事件,然后进行相应处理 268 */ 269 } 270 } 271 } 272 273 public void addActionListener(ActionListener actionListener) { 274 actionListenerList.add(ActionListener.class, actionListener); 275 } 276 277 public void removeActionListener(ActionListener actionListener) { 278 actionListenerList.remove(ActionListener.class, actionListener); 279 } 280 281 /** 282 * 事件管理,触发事件 283 * 284 * @param actionEvent 285 * void 286 */ 287 protected void fireActionPerformed(ActionEvent actionEvent) { 288 EventListener listenerList[] = actionListenerList.getListeners(ActionListener.class); 289 for (int i = 0, n = listenerList.length; i < n; i++) { 290 ((ActionListener) listenerList[i]).actionPerformed(actionEvent); 291 } 292 } 293 294 public static void main(String[] args) { 295 296 JFrame frame = new JFrame("xxxxxx"); 297 frame.setSize(400, 300); 298 299 final DateChooser datePicker = new DateChooser(); 300 datePicker.addActionListener(new ActionListener() {// 事件捕获 301 302 public void actionPerformed(ActionEvent e) { 303 System.out.println(datePicker.getSelectedDate()); 304 305 } 306 }); 307 frame.getContentPane().add(datePicker); 308 309 frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); 310 frame.setLocationRelativeTo(null); 311 frame.setVisible(true); 312 313 } 314 315} 316 317//-------自定义按钮-------------- 318package unit; 319 320import java.awt.Color; 321import java.awt.Cursor; 322import java.awt.Graphics; 323import java.awt.Graphics2D; 324import java.awt.Paint; 325import java.awt.RenderingHints; 326 327import javax.swing.Action; 328import javax.swing.BorderFactory; 329import javax.swing.Icon; 330import javax.swing.JButton; 331 332public class DateButton extends JButton { 333 private static final long serialVersionUID = 1L; 334 protected Color normalBackground; 335 protected Color selectedBackground; 336 public DateButton() { 337 initAttributes(); 338 } 339 340 public DateButton(Icon icon) { 341 super(icon); 342 initAttributes(); 343 } 344 345 public DateButton(String text, Icon icon) { 346 super(text, icon); 347 initAttributes(); 348 } 349 350 public DateButton(String text) { 351 super(text); 352 initAttributes(); 353 } 354 355 public DateButton(Action a) { 356 super(a); 357 initAttributes(); 358 } 359 360 public void initAttributes() { 361 setRolloverEnabled(true); 362 setBorder(BorderFactory.createEmptyBorder()); 363 setContentAreaFilled(false); 364 setFocusPainted(false); 365 setNormalBackground(new Color(216, 216, 216)); 366 setCursor(Cursor.getPredefinedCursor(Cursor.HAND_CURSOR)); 367 } 368 369 @Override 370 public void paint(Graphics g) { 371 372 Graphics2D g2d = (Graphics2D) g; 373 g2d.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON); 374 375 Paint oldPaint = g2d.getPaint(); 376 377 if ((getModel().isSelected() || getModel().isPressed()) && selectedBackground != null) { 378 g2d.setPaint(selectedBackground); 379 g2d.fillRect(0, 0, getWidth(), getHeight()); 380 } else if (getNormalBackground() != null) { 381 g2d.setPaint(getNormalBackground()); 382 g2d.fillRect(0, 0, getWidth(), getHeight()); 383 } 384 g2d.setPaint(oldPaint); 385 super.paint(g2d); 386 387 } 388 389 public void clearDefaultAttribute() { 390 setNormalBackground(null); 391 } 392 393 @Override 394 public void setBackground(Color bg) { 395 super.setBackground(bg); 396 normalBackground = bg; 397 } 398 399 public Color getNormalBackground() { 400 return normalBackground; 401 } 402 403 public void setNormalBackground(Color normalBackground) { 404 super.setBackground(normalBackground); 405 this.normalBackground = normalBackground; 406 } 407 408 409 410 public void setSelectedBackground(Color selectedBackground) { 411 this.selectedBackground = selectedBackground; 412 } 413 414}