J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 1997-2006 Sun Microsystems, Inc. All Rights Reserved. |
| 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 | * |
| 5 | * This code is free software; you can redistribute it and/or modify it |
| 6 | * under the terms of the GNU General Public License version 2 only, as |
| 7 | * published by the Free Software Foundation. Sun designates this |
| 8 | * particular file as subject to the "Classpath" exception as provided |
| 9 | * by Sun in the LICENSE file that accompanied this code. |
| 10 | * |
| 11 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| 12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| 14 | * version 2 for more details (a copy is included in the LICENSE file that |
| 15 | * accompanied this code). |
| 16 | * |
| 17 | * You should have received a copy of the GNU General Public License version |
| 18 | * 2 along with this work; if not, write to the Free Software Foundation, |
| 19 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| 20 | * |
| 21 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| 22 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| 23 | * have any questions. |
| 24 | */ |
| 25 | |
| 26 | package javax.swing.plaf.basic; |
| 27 | |
| 28 | import java.awt.*; |
| 29 | import java.awt.event.*; |
| 30 | import javax.swing.*; |
| 31 | import javax.accessibility.*; |
| 32 | import javax.swing.FocusManager; |
| 33 | import javax.swing.plaf.*; |
| 34 | import javax.swing.border.*; |
| 35 | import javax.swing.text.*; |
| 36 | import javax.swing.event.*; |
| 37 | import java.beans.PropertyChangeListener; |
| 38 | import java.beans.PropertyChangeEvent; |
| 39 | import sun.awt.AppContext; |
| 40 | import sun.swing.DefaultLookup; |
| 41 | import sun.swing.UIAction; |
| 42 | |
| 43 | /** |
| 44 | * Basic UI implementation for JComboBox. |
| 45 | * <p> |
| 46 | * The combo box is a compound component which means that it is an agregate of |
| 47 | * many simpler components. This class creates and manages the listeners |
| 48 | * on the combo box and the combo box model. These listeners update the user |
| 49 | * interface in response to changes in the properties and state of the combo box. |
| 50 | * <p> |
| 51 | * All event handling is handled by listener classes created with the |
| 52 | * <code>createxxxListener()</code> methods and internal classes. |
| 53 | * You can change the behavior of this class by overriding the |
| 54 | * <code>createxxxListener()</code> methods and supplying your own |
| 55 | * event listeners or subclassing from the ones supplied in this class. |
| 56 | * <p> |
| 57 | * For adding specific actions, |
| 58 | * overide <code>installKeyboardActions</code> to add actions in response to |
| 59 | * KeyStroke bindings. See the article <a href="http://java.sun.com/products/jfc/tsc/special_report/kestrel/keybindings.html">Keyboard Bindings in Swing</a> |
| 60 | * at <a href="http://java.sun.com/products/jfc/tsc"><em>The Swing Connection</em></a>. |
| 61 | * |
| 62 | * @author Arnaud Weber |
| 63 | * @author Tom Santos |
| 64 | * @author Mark Davidson |
| 65 | */ |
| 66 | public class BasicComboBoxUI extends ComboBoxUI { |
| 67 | protected JComboBox comboBox; |
| 68 | /** |
| 69 | * This protected field is implementation specific. Do not access directly |
| 70 | * or override. |
| 71 | */ |
| 72 | protected boolean hasFocus = false; |
| 73 | |
| 74 | // Control the selection behavior of the JComboBox when it is used |
| 75 | // in the JTable DefaultCellEditor. |
| 76 | private boolean isTableCellEditor = false; |
| 77 | private static final String IS_TABLE_CELL_EDITOR = "JComboBox.isTableCellEditor"; |
| 78 | |
| 79 | // This list is for drawing the current item in the combo box. |
| 80 | protected JList listBox; |
| 81 | |
| 82 | // Used to render the currently selected item in the combo box. |
| 83 | // It doesn't have anything to do with the popup's rendering. |
| 84 | protected CellRendererPane currentValuePane = new CellRendererPane(); |
| 85 | |
| 86 | // The implementation of ComboPopup that is used to show the popup. |
| 87 | protected ComboPopup popup; |
| 88 | |
| 89 | // The Component that the ComboBoxEditor uses for editing |
| 90 | protected Component editor; |
| 91 | |
| 92 | // The arrow button that invokes the popup. |
| 93 | protected JButton arrowButton; |
| 94 | |
| 95 | // Listeners that are attached to the JComboBox |
| 96 | /** |
| 97 | * This protected field is implementation specific. Do not access directly |
| 98 | * or override. Override the listener construction method instead. |
| 99 | * |
| 100 | * @see #createKeyListener |
| 101 | */ |
| 102 | protected KeyListener keyListener; |
| 103 | /** |
| 104 | * This protected field is implementation specific. Do not access directly |
| 105 | * or override. Override the listener construction method instead. |
| 106 | * |
| 107 | * @see #createFocusListener |
| 108 | */ |
| 109 | protected FocusListener focusListener; |
| 110 | /** |
| 111 | * This protected field is implementation specific. Do not access directly |
| 112 | * or override. Override the listener construction method instead. |
| 113 | * |
| 114 | * @see #createPropertyChangeListener |
| 115 | */ |
| 116 | protected PropertyChangeListener propertyChangeListener; |
| 117 | |
| 118 | /** |
| 119 | * This protected field is implementation specific. Do not access directly |
| 120 | * or override. Override the listener construction method instead. |
| 121 | * |
| 122 | * @see #createItemListener |
| 123 | */ |
| 124 | protected ItemListener itemListener; |
| 125 | |
| 126 | // Listeners that the ComboPopup produces. |
| 127 | protected MouseListener popupMouseListener; |
| 128 | protected MouseMotionListener popupMouseMotionListener; |
| 129 | protected KeyListener popupKeyListener; |
| 130 | |
| 131 | // This is used for knowing when to cache the minimum preferred size. |
| 132 | // If the data in the list changes, the cached value get marked for recalc. |
| 133 | // Added to the current JComboBox model |
| 134 | /** |
| 135 | * This protected field is implementation specific. Do not access directly |
| 136 | * or override. Override the listener construction method instead. |
| 137 | * |
| 138 | * @see #createListDataListener |
| 139 | */ |
| 140 | protected ListDataListener listDataListener; |
| 141 | |
| 142 | /** |
| 143 | * Implements all the Listeners needed by this class, all existing |
| 144 | * listeners redirect to it. |
| 145 | */ |
| 146 | private Handler handler; |
| 147 | |
| 148 | /** |
| 149 | * The time factor to treate the series of typed alphanumeric key |
| 150 | * as prefix for first letter navigation. |
| 151 | */ |
| 152 | private long timeFactor = 1000L; |
| 153 | |
| 154 | /** |
| 155 | * This is tricky, this variables is needed for DefaultKeySelectionManager |
| 156 | * to take into account time factor. |
| 157 | */ |
| 158 | private long lastTime = 0L; |
| 159 | private long time = 0L; |
| 160 | |
| 161 | /** |
| 162 | * The default key selection manager |
| 163 | */ |
| 164 | JComboBox.KeySelectionManager keySelectionManager; |
| 165 | |
| 166 | // Flag for recalculating the minimum preferred size. |
| 167 | protected boolean isMinimumSizeDirty = true; |
| 168 | |
| 169 | // Cached minimum preferred size. |
| 170 | protected Dimension cachedMinimumSize = new Dimension( 0, 0 ); |
| 171 | |
| 172 | // Flag for calculating the display size |
| 173 | private boolean isDisplaySizeDirty = true; |
| 174 | |
| 175 | // Cached the size that the display needs to render the largest item |
| 176 | private Dimension cachedDisplaySize = new Dimension( 0, 0 ); |
| 177 | |
| 178 | // Key used for lookup of the DefaultListCellRenderer in the AppContext. |
| 179 | private static final Object COMBO_UI_LIST_CELL_RENDERER_KEY = |
| 180 | new StringBuffer("DefaultListCellRendererKey"); |
| 181 | |
| 182 | static final StringBuffer HIDE_POPUP_KEY |
| 183 | = new StringBuffer("HidePopupKey"); |
| 184 | |
| 185 | /** |
| 186 | * Whether or not all cells have the same baseline. |
| 187 | */ |
| 188 | private boolean sameBaseline; |
| 189 | |
| 190 | // Used for calculating the default size. |
| 191 | private static ListCellRenderer getDefaultListCellRenderer() { |
| 192 | ListCellRenderer renderer = (ListCellRenderer)AppContext. |
| 193 | getAppContext().get(COMBO_UI_LIST_CELL_RENDERER_KEY); |
| 194 | |
| 195 | if (renderer == null) { |
| 196 | renderer = new DefaultListCellRenderer(); |
| 197 | AppContext.getAppContext().put(COMBO_UI_LIST_CELL_RENDERER_KEY, |
| 198 | new DefaultListCellRenderer()); |
| 199 | } |
| 200 | return renderer; |
| 201 | } |
| 202 | |
| 203 | /** |
| 204 | * Populates ComboBox's actions. |
| 205 | */ |
| 206 | static void loadActionMap(LazyActionMap map) { |
| 207 | map.put(new Actions(Actions.HIDE)); |
| 208 | map.put(new Actions(Actions.PAGE_DOWN)); |
| 209 | map.put(new Actions(Actions.PAGE_UP)); |
| 210 | map.put(new Actions(Actions.HOME)); |
| 211 | map.put(new Actions(Actions.END)); |
| 212 | map.put(new Actions(Actions.DOWN)); |
| 213 | map.put(new Actions(Actions.DOWN_2)); |
| 214 | map.put(new Actions(Actions.TOGGLE)); |
| 215 | map.put(new Actions(Actions.TOGGLE_2)); |
| 216 | map.put(new Actions(Actions.UP)); |
| 217 | map.put(new Actions(Actions.UP_2)); |
| 218 | map.put(new Actions(Actions.ENTER)); |
| 219 | } |
| 220 | |
| 221 | //======================== |
| 222 | // begin UI Initialization |
| 223 | // |
| 224 | |
| 225 | public static ComponentUI createUI(JComponent c) { |
| 226 | return new BasicComboBoxUI(); |
| 227 | } |
| 228 | |
| 229 | public void installUI( JComponent c ) { |
| 230 | isMinimumSizeDirty = true; |
| 231 | |
| 232 | comboBox = (JComboBox)c; |
| 233 | installDefaults(); |
| 234 | popup = createPopup(); |
| 235 | listBox = popup.getList(); |
| 236 | |
| 237 | // Is this combo box a cell editor? |
| 238 | Boolean inTable = (Boolean)c.getClientProperty(IS_TABLE_CELL_EDITOR ); |
| 239 | if (inTable != null) { |
| 240 | isTableCellEditor = inTable.equals(Boolean.TRUE) ? true : false; |
| 241 | } |
| 242 | |
| 243 | if ( comboBox.getRenderer() == null || comboBox.getRenderer() instanceof UIResource ) { |
| 244 | comboBox.setRenderer( createRenderer() ); |
| 245 | } |
| 246 | |
| 247 | if ( comboBox.getEditor() == null || comboBox.getEditor() instanceof UIResource ) { |
| 248 | comboBox.setEditor( createEditor() ); |
| 249 | } |
| 250 | |
| 251 | installListeners(); |
| 252 | installComponents(); |
| 253 | |
| 254 | comboBox.setLayout( createLayoutManager() ); |
| 255 | |
| 256 | comboBox.setRequestFocusEnabled( true ); |
| 257 | |
| 258 | installKeyboardActions(); |
| 259 | |
| 260 | comboBox.putClientProperty("doNotCancelPopup", HIDE_POPUP_KEY); |
| 261 | |
| 262 | if (keySelectionManager == null || keySelectionManager instanceof UIResource) { |
| 263 | keySelectionManager = new DefaultKeySelectionManager(); |
| 264 | } |
| 265 | comboBox.setKeySelectionManager(keySelectionManager); |
| 266 | } |
| 267 | |
| 268 | public void uninstallUI( JComponent c ) { |
| 269 | setPopupVisible( comboBox, false); |
| 270 | popup.uninstallingUI(); |
| 271 | |
| 272 | uninstallKeyboardActions(); |
| 273 | |
| 274 | comboBox.setLayout( null ); |
| 275 | |
| 276 | uninstallComponents(); |
| 277 | uninstallListeners(); |
| 278 | uninstallDefaults(); |
| 279 | |
| 280 | if ( comboBox.getRenderer() == null || comboBox.getRenderer() instanceof UIResource ) { |
| 281 | comboBox.setRenderer( null ); |
| 282 | } |
| 283 | |
| 284 | ComboBoxEditor comboBoxEditor = comboBox.getEditor(); |
| 285 | if (comboBoxEditor instanceof UIResource ) { |
| 286 | if (comboBoxEditor.getEditorComponent().hasFocus()) { |
| 287 | // Leave focus in JComboBox. |
| 288 | comboBox.requestFocusInWindow(); |
| 289 | } |
| 290 | comboBox.setEditor( null ); |
| 291 | } |
| 292 | |
| 293 | if (keySelectionManager instanceof UIResource) { |
| 294 | comboBox.setKeySelectionManager(null); |
| 295 | } |
| 296 | |
| 297 | handler = null; |
| 298 | keyListener = null; |
| 299 | focusListener = null; |
| 300 | listDataListener = null; |
| 301 | propertyChangeListener = null; |
| 302 | popup = null; |
| 303 | listBox = null; |
| 304 | comboBox = null; |
| 305 | } |
| 306 | |
| 307 | /** |
| 308 | * Installs the default colors, default font, default renderer, and default |
| 309 | * editor into the JComboBox. |
| 310 | */ |
| 311 | protected void installDefaults() { |
| 312 | LookAndFeel.installColorsAndFont( comboBox, |
| 313 | "ComboBox.background", |
| 314 | "ComboBox.foreground", |
| 315 | "ComboBox.font" ); |
| 316 | LookAndFeel.installBorder( comboBox, "ComboBox.border" ); |
| 317 | LookAndFeel.installProperty( comboBox, "opaque", Boolean.TRUE); |
| 318 | |
| 319 | Long l = (Long)UIManager.get("ComboBox.timeFactor"); |
| 320 | timeFactor = (l!=null) ? l.longValue() : 1000L; |
| 321 | } |
| 322 | |
| 323 | /** |
| 324 | * Create and install the listeners for the combo box and its model. |
| 325 | * This method is called when the UI is installed. |
| 326 | */ |
| 327 | protected void installListeners() { |
| 328 | if ( (itemListener = createItemListener()) != null) { |
| 329 | comboBox.addItemListener( itemListener ); |
| 330 | } |
| 331 | if ( (propertyChangeListener = createPropertyChangeListener()) != null ) { |
| 332 | comboBox.addPropertyChangeListener( propertyChangeListener ); |
| 333 | } |
| 334 | if ( (keyListener = createKeyListener()) != null ) { |
| 335 | comboBox.addKeyListener( keyListener ); |
| 336 | } |
| 337 | if ( (focusListener = createFocusListener()) != null ) { |
| 338 | comboBox.addFocusListener( focusListener ); |
| 339 | } |
| 340 | if ((popupMouseListener = popup.getMouseListener()) != null) { |
| 341 | comboBox.addMouseListener( popupMouseListener ); |
| 342 | } |
| 343 | if ((popupMouseMotionListener = popup.getMouseMotionListener()) != null) { |
| 344 | comboBox.addMouseMotionListener( popupMouseMotionListener ); |
| 345 | } |
| 346 | if ((popupKeyListener = popup.getKeyListener()) != null) { |
| 347 | comboBox.addKeyListener(popupKeyListener); |
| 348 | } |
| 349 | |
| 350 | if ( comboBox.getModel() != null ) { |
| 351 | if ( (listDataListener = createListDataListener()) != null ) { |
| 352 | comboBox.getModel().addListDataListener( listDataListener ); |
| 353 | } |
| 354 | } |
| 355 | } |
| 356 | |
| 357 | /** |
| 358 | * Uninstalls the default colors, default font, default renderer, and default |
| 359 | * editor into the JComboBox. |
| 360 | */ |
| 361 | protected void uninstallDefaults() { |
| 362 | LookAndFeel.installColorsAndFont( comboBox, |
| 363 | "ComboBox.background", |
| 364 | "ComboBox.foreground", |
| 365 | "ComboBox.font" ); |
| 366 | LookAndFeel.uninstallBorder( comboBox ); |
| 367 | } |
| 368 | |
| 369 | /** |
| 370 | * Remove the installed listeners from the combo box and its model. |
| 371 | * The number and types of listeners removed and in this method should be |
| 372 | * the same that was added in <code>installListeners</code> |
| 373 | */ |
| 374 | protected void uninstallListeners() { |
| 375 | if ( keyListener != null ) { |
| 376 | comboBox.removeKeyListener( keyListener ); |
| 377 | } |
| 378 | if ( itemListener != null) { |
| 379 | comboBox.removeItemListener( itemListener ); |
| 380 | } |
| 381 | if ( propertyChangeListener != null ) { |
| 382 | comboBox.removePropertyChangeListener( propertyChangeListener ); |
| 383 | } |
| 384 | if ( focusListener != null) { |
| 385 | comboBox.removeFocusListener( focusListener ); |
| 386 | } |
| 387 | if ( popupMouseListener != null) { |
| 388 | comboBox.removeMouseListener( popupMouseListener ); |
| 389 | } |
| 390 | if ( popupMouseMotionListener != null) { |
| 391 | comboBox.removeMouseMotionListener( popupMouseMotionListener ); |
| 392 | } |
| 393 | if (popupKeyListener != null) { |
| 394 | comboBox.removeKeyListener(popupKeyListener); |
| 395 | } |
| 396 | if ( comboBox.getModel() != null ) { |
| 397 | if ( listDataListener != null ) { |
| 398 | comboBox.getModel().removeListDataListener( listDataListener ); |
| 399 | } |
| 400 | } |
| 401 | } |
| 402 | |
| 403 | /** |
| 404 | * Creates the popup portion of the combo box. |
| 405 | * |
| 406 | * @return an instance of <code>ComboPopup</code> |
| 407 | * @see ComboPopup |
| 408 | */ |
| 409 | protected ComboPopup createPopup() { |
| 410 | return new BasicComboPopup( comboBox ); |
| 411 | } |
| 412 | |
| 413 | /** |
| 414 | * Creates a <code>KeyListener</code> which will be added to the |
| 415 | * combo box. If this method returns null then it will not be added |
| 416 | * to the combo box. |
| 417 | * |
| 418 | * @return an instance <code>KeyListener</code> or null |
| 419 | */ |
| 420 | protected KeyListener createKeyListener() { |
| 421 | return getHandler(); |
| 422 | } |
| 423 | |
| 424 | /** |
| 425 | * Creates a <code>FocusListener</code> which will be added to the combo box. |
| 426 | * If this method returns null then it will not be added to the combo box. |
| 427 | * |
| 428 | * @return an instance of a <code>FocusListener</code> or null |
| 429 | */ |
| 430 | protected FocusListener createFocusListener() { |
| 431 | return getHandler(); |
| 432 | } |
| 433 | |
| 434 | /** |
| 435 | * Creates a list data listener which will be added to the |
| 436 | * <code>ComboBoxModel</code>. If this method returns null then |
| 437 | * it will not be added to the combo box model. |
| 438 | * |
| 439 | * @return an instance of a <code>ListDataListener</code> or null |
| 440 | */ |
| 441 | protected ListDataListener createListDataListener() { |
| 442 | return getHandler(); |
| 443 | } |
| 444 | |
| 445 | /** |
| 446 | * Creates an <code>ItemListener</code> which will be added to the |
| 447 | * combo box. If this method returns null then it will not |
| 448 | * be added to the combo box. |
| 449 | * <p> |
| 450 | * Subclasses may override this method to return instances of their own |
| 451 | * ItemEvent handlers. |
| 452 | * |
| 453 | * @return an instance of an <code>ItemListener</code> or null |
| 454 | */ |
| 455 | protected ItemListener createItemListener() { |
| 456 | return null; |
| 457 | } |
| 458 | |
| 459 | /** |
| 460 | * Creates a <code>PropertyChangeListener</code> which will be added to |
| 461 | * the combo box. If this method returns null then it will not |
| 462 | * be added to the combo box. |
| 463 | * |
| 464 | * @return an instance of a <code>PropertyChangeListener</code> or null |
| 465 | */ |
| 466 | protected PropertyChangeListener createPropertyChangeListener() { |
| 467 | return getHandler(); |
| 468 | } |
| 469 | |
| 470 | /** |
| 471 | * Creates a layout manager for managing the components which make up the |
| 472 | * combo box. |
| 473 | * |
| 474 | * @return an instance of a layout manager |
| 475 | */ |
| 476 | protected LayoutManager createLayoutManager() { |
| 477 | return getHandler(); |
| 478 | } |
| 479 | |
| 480 | /** |
| 481 | * Creates the default renderer that will be used in a non-editiable combo |
| 482 | * box. A default renderer will used only if a renderer has not been |
| 483 | * explicitly set with <code>setRenderer</code>. |
| 484 | * |
| 485 | * @return a <code>ListCellRender</code> used for the combo box |
| 486 | * @see javax.swing.JComboBox#setRenderer |
| 487 | */ |
| 488 | protected ListCellRenderer createRenderer() { |
| 489 | return new BasicComboBoxRenderer.UIResource(); |
| 490 | } |
| 491 | |
| 492 | /** |
| 493 | * Creates the default editor that will be used in editable combo boxes. |
| 494 | * A default editor will be used only if an editor has not been |
| 495 | * explicitly set with <code>setEditor</code>. |
| 496 | * |
| 497 | * @return a <code>ComboBoxEditor</code> used for the combo box |
| 498 | * @see javax.swing.JComboBox#setEditor |
| 499 | */ |
| 500 | protected ComboBoxEditor createEditor() { |
| 501 | return new BasicComboBoxEditor.UIResource(); |
| 502 | } |
| 503 | |
| 504 | /** |
| 505 | * Returns the shared listener. |
| 506 | */ |
| 507 | private Handler getHandler() { |
| 508 | if (handler == null) { |
| 509 | handler = new Handler(); |
| 510 | } |
| 511 | return handler; |
| 512 | } |
| 513 | |
| 514 | // |
| 515 | // end UI Initialization |
| 516 | //====================== |
| 517 | |
| 518 | |
| 519 | //====================== |
| 520 | // begin Inner classes |
| 521 | // |
| 522 | |
| 523 | /** |
| 524 | * This listener checks to see if the key event isn't a navigation key. If |
| 525 | * it finds a key event that wasn't a navigation key it dispatches it to |
| 526 | * JComboBox.selectWithKeyChar() so that it can do type-ahead. |
| 527 | * |
| 528 | * This public inner class should be treated as protected. |
| 529 | * Instantiate it only within subclasses of |
| 530 | * <code>BasicComboBoxUI</code>. |
| 531 | */ |
| 532 | public class KeyHandler extends KeyAdapter { |
| 533 | public void keyPressed( KeyEvent e ) { |
| 534 | getHandler().keyPressed(e); |
| 535 | } |
| 536 | } |
| 537 | |
| 538 | /** |
| 539 | * This listener hides the popup when the focus is lost. It also repaints |
| 540 | * when focus is gained or lost. |
| 541 | * |
| 542 | * This public inner class should be treated as protected. |
| 543 | * Instantiate it only within subclasses of |
| 544 | * <code>BasicComboBoxUI</code>. |
| 545 | */ |
| 546 | public class FocusHandler implements FocusListener { |
| 547 | public void focusGained( FocusEvent e ) { |
| 548 | getHandler().focusGained(e); |
| 549 | } |
| 550 | |
| 551 | public void focusLost( FocusEvent e ) { |
| 552 | getHandler().focusLost(e); |
| 553 | } |
| 554 | } |
| 555 | |
| 556 | /** |
| 557 | * This listener watches for changes in the |
| 558 | * <code>ComboBoxModel</code>. |
| 559 | * <p> |
| 560 | * This public inner class should be treated as protected. |
| 561 | * Instantiate it only within subclasses of |
| 562 | * <code>BasicComboBoxUI</code>. |
| 563 | * |
| 564 | * @see #createListDataListener |
| 565 | */ |
| 566 | public class ListDataHandler implements ListDataListener { |
| 567 | public void contentsChanged( ListDataEvent e ) { |
| 568 | getHandler().contentsChanged(e); |
| 569 | } |
| 570 | |
| 571 | public void intervalAdded( ListDataEvent e ) { |
| 572 | getHandler().intervalAdded(e); |
| 573 | } |
| 574 | |
| 575 | public void intervalRemoved( ListDataEvent e ) { |
| 576 | getHandler().intervalRemoved(e); |
| 577 | } |
| 578 | } |
| 579 | |
| 580 | /** |
| 581 | * This listener watches for changes to the selection in the |
| 582 | * combo box. |
| 583 | * <p> |
| 584 | * This public inner class should be treated as protected. |
| 585 | * Instantiate it only within subclasses of |
| 586 | * <code>BasicComboBoxUI</code>. |
| 587 | * |
| 588 | * @see #createItemListener |
| 589 | */ |
| 590 | public class ItemHandler implements ItemListener { |
| 591 | // This class used to implement behavior which is now redundant. |
| 592 | public void itemStateChanged(ItemEvent e) {} |
| 593 | } |
| 594 | |
| 595 | /** |
| 596 | * This listener watches for bound properties that have changed in the |
| 597 | * combo box. |
| 598 | * <p> |
| 599 | * Subclasses which wish to listen to combo box property changes should |
| 600 | * call the superclass methods to ensure that the combo box ui correctly |
| 601 | * handles property changes. |
| 602 | * <p> |
| 603 | * This public inner class should be treated as protected. |
| 604 | * Instantiate it only within subclasses of |
| 605 | * <code>BasicComboBoxUI</code>. |
| 606 | * |
| 607 | * @see #createPropertyChangeListener |
| 608 | */ |
| 609 | public class PropertyChangeHandler implements PropertyChangeListener { |
| 610 | public void propertyChange(PropertyChangeEvent e) { |
| 611 | getHandler().propertyChange(e); |
| 612 | } |
| 613 | } |
| 614 | |
| 615 | |
| 616 | // Syncronizes the ToolTip text for the components within the combo box to be the |
| 617 | // same value as the combo box ToolTip text. |
| 618 | private void updateToolTipTextForChildren() { |
| 619 | Component[] children = comboBox.getComponents(); |
| 620 | for ( int i = 0; i < children.length; ++i ) { |
| 621 | if ( children[i] instanceof JComponent ) { |
| 622 | ((JComponent)children[i]).setToolTipText( comboBox.getToolTipText() ); |
| 623 | } |
| 624 | } |
| 625 | } |
| 626 | |
| 627 | /** |
| 628 | * This layout manager handles the 'standard' layout of combo boxes. It puts |
| 629 | * the arrow button to the right and the editor to the left. If there is no |
| 630 | * editor it still keeps the arrow button to the right. |
| 631 | * |
| 632 | * This public inner class should be treated as protected. |
| 633 | * Instantiate it only within subclasses of |
| 634 | * <code>BasicComboBoxUI</code>. |
| 635 | */ |
| 636 | public class ComboBoxLayoutManager implements LayoutManager { |
| 637 | public void addLayoutComponent(String name, Component comp) {} |
| 638 | |
| 639 | public void removeLayoutComponent(Component comp) {} |
| 640 | |
| 641 | public Dimension preferredLayoutSize(Container parent) { |
| 642 | return getHandler().preferredLayoutSize(parent); |
| 643 | } |
| 644 | |
| 645 | public Dimension minimumLayoutSize(Container parent) { |
| 646 | return getHandler().minimumLayoutSize(parent); |
| 647 | } |
| 648 | |
| 649 | public void layoutContainer(Container parent) { |
| 650 | getHandler().layoutContainer(parent); |
| 651 | } |
| 652 | } |
| 653 | |
| 654 | // |
| 655 | // end Inner classes |
| 656 | //==================== |
| 657 | |
| 658 | |
| 659 | //=============================== |
| 660 | // begin Sub-Component Management |
| 661 | // |
| 662 | |
| 663 | /** |
| 664 | * Creates and initializes the components which make up the |
| 665 | * aggregate combo box. This method is called as part of the UI |
| 666 | * installation process. |
| 667 | */ |
| 668 | protected void installComponents() { |
| 669 | arrowButton = createArrowButton(); |
| 670 | comboBox.add( arrowButton ); |
| 671 | |
| 672 | if (arrowButton != null) { |
| 673 | configureArrowButton(); |
| 674 | } |
| 675 | |
| 676 | if ( comboBox.isEditable() ) { |
| 677 | addEditor(); |
| 678 | } |
| 679 | |
| 680 | comboBox.add( currentValuePane ); |
| 681 | } |
| 682 | |
| 683 | /** |
| 684 | * The aggregate components which compise the combo box are |
| 685 | * unregistered and uninitialized. This method is called as part of the |
| 686 | * UI uninstallation process. |
| 687 | */ |
| 688 | protected void uninstallComponents() { |
| 689 | if ( arrowButton != null ) { |
| 690 | unconfigureArrowButton(); |
| 691 | } |
| 692 | if ( editor != null ) { |
| 693 | unconfigureEditor(); |
| 694 | } |
| 695 | comboBox.removeAll(); // Just to be safe. |
| 696 | arrowButton = null; |
| 697 | } |
| 698 | |
| 699 | /** |
| 700 | * This public method is implementation specific and should be private. |
| 701 | * do not call or override. To implement a specific editor create a |
| 702 | * custom <code>ComboBoxEditor</code> |
| 703 | * |
| 704 | * @see #createEditor |
| 705 | * @see javax.swing.JComboBox#setEditor |
| 706 | * @see javax.swing.ComboBoxEditor |
| 707 | */ |
| 708 | public void addEditor() { |
| 709 | removeEditor(); |
| 710 | editor = comboBox.getEditor().getEditorComponent(); |
| 711 | if ( editor != null ) { |
| 712 | configureEditor(); |
| 713 | comboBox.add(editor); |
| 714 | if(comboBox.isFocusOwner()) { |
| 715 | // Switch focus to the editor component |
| 716 | editor.requestFocusInWindow(); |
| 717 | } |
| 718 | } |
| 719 | } |
| 720 | |
| 721 | /** |
| 722 | * This public method is implementation specific and should be private. |
| 723 | * do not call or override. |
| 724 | * |
| 725 | * @see #addEditor |
| 726 | */ |
| 727 | public void removeEditor() { |
| 728 | if ( editor != null ) { |
| 729 | unconfigureEditor(); |
| 730 | comboBox.remove( editor ); |
| 731 | editor = null; |
| 732 | } |
| 733 | } |
| 734 | |
| 735 | /** |
| 736 | * This protected method is implementation specific and should be private. |
| 737 | * do not call or override. |
| 738 | * |
| 739 | * @see #addEditor |
| 740 | */ |
| 741 | protected void configureEditor() { |
| 742 | // Should be in the same state as the combobox |
| 743 | editor.setEnabled(comboBox.isEnabled()); |
| 744 | |
| 745 | editor.setFocusable(comboBox.isFocusable()); |
| 746 | |
| 747 | editor.setFont( comboBox.getFont() ); |
| 748 | |
| 749 | if (focusListener != null) { |
| 750 | editor.addFocusListener(focusListener); |
| 751 | } |
| 752 | |
| 753 | editor.addFocusListener( getHandler() ); |
| 754 | |
| 755 | comboBox.getEditor().addActionListener(getHandler()); |
| 756 | |
| 757 | if(editor instanceof JComponent) { |
| 758 | ((JComponent)editor).putClientProperty("doNotCancelPopup", |
| 759 | HIDE_POPUP_KEY); |
| 760 | ((JComponent)editor).setInheritsPopupMenu(true); |
| 761 | } |
| 762 | |
| 763 | comboBox.configureEditor(comboBox.getEditor(),comboBox.getSelectedItem()); |
| 764 | } |
| 765 | |
| 766 | /** |
| 767 | * This protected method is implementation specific and should be private. |
| 768 | * Do not call or override. |
| 769 | * |
| 770 | * @see #addEditor |
| 771 | */ |
| 772 | protected void unconfigureEditor() { |
| 773 | if (focusListener != null) { |
| 774 | editor.removeFocusListener(focusListener); |
| 775 | } |
| 776 | |
| 777 | editor.removeFocusListener(getHandler()); |
| 778 | comboBox.getEditor().removeActionListener(getHandler()); |
| 779 | } |
| 780 | |
| 781 | /** |
| 782 | * This public method is implementation specific and should be private. Do |
| 783 | * not call or override. |
| 784 | * |
| 785 | * @see #createArrowButton |
| 786 | */ |
| 787 | public void configureArrowButton() { |
| 788 | if ( arrowButton != null ) { |
| 789 | arrowButton.setEnabled( comboBox.isEnabled() ); |
| 790 | arrowButton.setFocusable(comboBox.isFocusable()); |
| 791 | arrowButton.setRequestFocusEnabled(false); |
| 792 | arrowButton.addMouseListener( popup.getMouseListener() ); |
| 793 | arrowButton.addMouseMotionListener( popup.getMouseMotionListener() ); |
| 794 | arrowButton.resetKeyboardActions(); |
| 795 | arrowButton.putClientProperty("doNotCancelPopup", HIDE_POPUP_KEY); |
| 796 | arrowButton.setInheritsPopupMenu(true); |
| 797 | } |
| 798 | } |
| 799 | |
| 800 | /** |
| 801 | * This public method is implementation specific and should be private. Do |
| 802 | * not call or override. |
| 803 | * |
| 804 | * @see #createArrowButton |
| 805 | */ |
| 806 | public void unconfigureArrowButton() { |
| 807 | if ( arrowButton != null ) { |
| 808 | arrowButton.removeMouseListener( popup.getMouseListener() ); |
| 809 | arrowButton.removeMouseMotionListener( popup.getMouseMotionListener() ); |
| 810 | } |
| 811 | } |
| 812 | |
| 813 | /** |
| 814 | * Creates an button which will be used as the control to show or hide |
| 815 | * the popup portion of the combo box. |
| 816 | * |
| 817 | * @return a button which represents the popup control |
| 818 | */ |
| 819 | protected JButton createArrowButton() { |
| 820 | JButton button = new BasicArrowButton(BasicArrowButton.SOUTH, |
| 821 | UIManager.getColor("ComboBox.buttonBackground"), |
| 822 | UIManager.getColor("ComboBox.buttonShadow"), |
| 823 | UIManager.getColor("ComboBox.buttonDarkShadow"), |
| 824 | UIManager.getColor("ComboBox.buttonHighlight")); |
| 825 | button.setName("ComboBox.arrowButton"); |
| 826 | return button; |
| 827 | } |
| 828 | |
| 829 | // |
| 830 | // end Sub-Component Management |
| 831 | //=============================== |
| 832 | |
| 833 | |
| 834 | //================================ |
| 835 | // begin ComboBoxUI Implementation |
| 836 | // |
| 837 | |
| 838 | /** |
| 839 | * Tells if the popup is visible or not. |
| 840 | */ |
| 841 | public boolean isPopupVisible( JComboBox c ) { |
| 842 | return popup.isVisible(); |
| 843 | } |
| 844 | |
| 845 | /** |
| 846 | * Hides the popup. |
| 847 | */ |
| 848 | public void setPopupVisible( JComboBox c, boolean v ) { |
| 849 | if ( v ) { |
| 850 | popup.show(); |
| 851 | } else { |
| 852 | popup.hide(); |
| 853 | } |
| 854 | } |
| 855 | |
| 856 | /** |
| 857 | * Determines if the JComboBox is focus traversable. If the JComboBox is editable |
| 858 | * this returns false, otherwise it returns true. |
| 859 | */ |
| 860 | public boolean isFocusTraversable( JComboBox c ) { |
| 861 | return !comboBox.isEditable(); |
| 862 | } |
| 863 | |
| 864 | // |
| 865 | // end ComboBoxUI Implementation |
| 866 | //============================== |
| 867 | |
| 868 | |
| 869 | //================================= |
| 870 | // begin ComponentUI Implementation |
| 871 | |
| 872 | public void paint( Graphics g, JComponent c ) { |
| 873 | hasFocus = comboBox.hasFocus(); |
| 874 | if ( !comboBox.isEditable() ) { |
| 875 | Rectangle r = rectangleForCurrentValue(); |
| 876 | paintCurrentValueBackground(g,r,hasFocus); |
| 877 | paintCurrentValue(g,r,hasFocus); |
| 878 | } |
| 879 | } |
| 880 | |
| 881 | public Dimension getPreferredSize( JComponent c ) { |
| 882 | return getMinimumSize(c); |
| 883 | } |
| 884 | |
| 885 | /** |
| 886 | * The minumum size is the size of the display area plus insets plus the button. |
| 887 | */ |
| 888 | public Dimension getMinimumSize( JComponent c ) { |
| 889 | if ( !isMinimumSizeDirty ) { |
| 890 | return new Dimension(cachedMinimumSize); |
| 891 | } |
| 892 | Dimension size = getDisplaySize(); |
| 893 | Insets insets = getInsets(); |
| 894 | size.height += insets.top + insets.bottom; |
| 895 | int buttonSize = size.height - (insets.top + insets.bottom); |
| 896 | size.width += insets.left + insets.right + buttonSize; |
| 897 | |
| 898 | cachedMinimumSize.setSize( size.width, size.height ); |
| 899 | isMinimumSizeDirty = false; |
| 900 | |
| 901 | return new Dimension(size); |
| 902 | } |
| 903 | |
| 904 | public Dimension getMaximumSize( JComponent c ) { |
| 905 | return new Dimension(Short.MAX_VALUE, Short.MAX_VALUE); |
| 906 | } |
| 907 | |
| 908 | /** |
| 909 | * Returns the baseline. |
| 910 | * |
| 911 | * @throws NullPointerException {@inheritDoc} |
| 912 | * @throws IllegalArgumentException {@inheritDoc} |
| 913 | * @see javax.swing.JComponent#getBaseline(int, int) |
| 914 | * @since 1.6 |
| 915 | */ |
| 916 | public int getBaseline(JComponent c, int width, int height) { |
| 917 | super.getBaseline(c, width, height); |
| 918 | int baseline = -1; |
| 919 | // force sameBaseline to be updated. |
| 920 | getDisplaySize(); |
| 921 | if (sameBaseline) { |
| 922 | Insets insets = c.getInsets(); |
| 923 | height = height - insets.top - insets.bottom; |
| 924 | if (!comboBox.isEditable()) { |
| 925 | ListCellRenderer renderer = comboBox.getRenderer(); |
| 926 | if (renderer == null) { |
| 927 | renderer = new DefaultListCellRenderer(); |
| 928 | } |
| 929 | Object value = null; |
| 930 | Object prototypeValue = comboBox.getPrototypeDisplayValue(); |
| 931 | if (prototypeValue != null) { |
| 932 | value = prototypeValue; |
| 933 | } |
| 934 | else if (comboBox.getModel().getSize() > 0) { |
| 935 | // Note, we're assuming the baseline is the same for all |
| 936 | // cells, if not, this needs to loop through all. |
| 937 | value = comboBox.getModel().getElementAt(0); |
| 938 | } |
| 939 | if (value == null) { |
| 940 | value = " "; |
| 941 | } else if (value instanceof String && "".equals(value)) { |
| 942 | value = " "; |
| 943 | } |
| 944 | Component component = renderer. |
| 945 | getListCellRendererComponent(listBox, value, -1, |
| 946 | false, false); |
| 947 | if (component instanceof JComponent) { |
| 948 | component.setFont(comboBox.getFont()); |
| 949 | } |
| 950 | baseline = component.getBaseline(width, height); |
| 951 | } |
| 952 | else { |
| 953 | baseline = editor.getBaseline(width, height); |
| 954 | } |
| 955 | if (baseline > 0) { |
| 956 | baseline += insets.top; |
| 957 | } |
| 958 | } |
| 959 | return baseline; |
| 960 | } |
| 961 | |
| 962 | /** |
| 963 | * Returns an enum indicating how the baseline of the component |
| 964 | * changes as the size changes. |
| 965 | * |
| 966 | * @throws NullPointerException {@inheritDoc} |
| 967 | * @see javax.swing.JComponent#getBaseline(int, int) |
| 968 | * @since 1.6 |
| 969 | */ |
| 970 | public Component.BaselineResizeBehavior getBaselineResizeBehavior( |
| 971 | JComponent c) { |
| 972 | super.getBaselineResizeBehavior(c); |
| 973 | // Force sameBaseline to be updated. |
| 974 | getDisplaySize(); |
| 975 | if (comboBox.isEditable()) { |
| 976 | return editor.getBaselineResizeBehavior(); |
| 977 | } |
| 978 | else if (sameBaseline) { |
| 979 | ListCellRenderer renderer = comboBox.getRenderer(); |
| 980 | if (renderer == null) { |
| 981 | renderer = new DefaultListCellRenderer(); |
| 982 | } |
| 983 | Object value = null; |
| 984 | Object prototypeValue = comboBox.getPrototypeDisplayValue(); |
| 985 | if (prototypeValue != null) { |
| 986 | value = prototypeValue; |
| 987 | } |
| 988 | else if (comboBox.getModel().getSize() > 0) { |
| 989 | // Note, we're assuming the baseline is the same for all |
| 990 | // cells, if not, this needs to loop through all. |
| 991 | value = comboBox.getModel().getElementAt(0); |
| 992 | } |
| 993 | if (value != null) { |
| 994 | Component component = renderer. |
| 995 | getListCellRendererComponent(listBox, value, -1, |
| 996 | false, false); |
| 997 | return component.getBaselineResizeBehavior(); |
| 998 | } |
| 999 | } |
| 1000 | return Component.BaselineResizeBehavior.OTHER; |
| 1001 | } |
| 1002 | |
| 1003 | // This is currently hacky... |
| 1004 | public int getAccessibleChildrenCount(JComponent c) { |
| 1005 | if ( comboBox.isEditable() ) { |
| 1006 | return 2; |
| 1007 | } |
| 1008 | else { |
| 1009 | return 1; |
| 1010 | } |
| 1011 | } |
| 1012 | |
| 1013 | // This is currently hacky... |
| 1014 | public Accessible getAccessibleChild(JComponent c, int i) { |
| 1015 | // 0 = the popup |
| 1016 | // 1 = the editor |
| 1017 | switch ( i ) { |
| 1018 | case 0: |
| 1019 | if ( popup instanceof Accessible ) { |
| 1020 | AccessibleContext ac = ((Accessible) popup).getAccessibleContext(); |
| 1021 | ac.setAccessibleParent(comboBox); |
| 1022 | return(Accessible) popup; |
| 1023 | } |
| 1024 | break; |
| 1025 | case 1: |
| 1026 | if ( comboBox.isEditable() |
| 1027 | && (editor instanceof Accessible) ) { |
| 1028 | AccessibleContext ac = ((Accessible) editor).getAccessibleContext(); |
| 1029 | ac.setAccessibleParent(comboBox); |
| 1030 | return(Accessible) editor; |
| 1031 | } |
| 1032 | break; |
| 1033 | } |
| 1034 | return null; |
| 1035 | } |
| 1036 | |
| 1037 | // |
| 1038 | // end ComponentUI Implementation |
| 1039 | //=============================== |
| 1040 | |
| 1041 | |
| 1042 | //====================== |
| 1043 | // begin Utility Methods |
| 1044 | // |
| 1045 | |
| 1046 | /** |
| 1047 | * Returns whether or not the supplied keyCode maps to a key that is used for |
| 1048 | * navigation. This is used for optimizing key input by only passing non- |
| 1049 | * navigation keys to the type-ahead mechanism. Subclasses should override this |
| 1050 | * if they change the navigation keys. |
| 1051 | */ |
| 1052 | protected boolean isNavigationKey( int keyCode ) { |
| 1053 | return keyCode == KeyEvent.VK_UP || keyCode == KeyEvent.VK_DOWN || |
| 1054 | keyCode == KeyEvent.VK_KP_UP || keyCode == KeyEvent.VK_KP_DOWN; |
| 1055 | } |
| 1056 | |
| 1057 | private boolean isNavigationKey(int keyCode, int modifiers) { |
| 1058 | InputMap inputMap = comboBox.getInputMap(JComponent.WHEN_ANCESTOR_OF_FOCUSED_COMPONENT); |
| 1059 | KeyStroke key = KeyStroke.getKeyStroke(keyCode, modifiers); |
| 1060 | |
| 1061 | if (inputMap != null && inputMap.get(key) != null) { |
| 1062 | return true; |
| 1063 | } |
| 1064 | return false; |
| 1065 | } |
| 1066 | |
| 1067 | /** |
| 1068 | * Selects the next item in the list. It won't change the selection if the |
| 1069 | * currently selected item is already the last item. |
| 1070 | */ |
| 1071 | protected void selectNextPossibleValue() { |
| 1072 | int si; |
| 1073 | |
| 1074 | if ( comboBox.isPopupVisible() ) { |
| 1075 | si = listBox.getSelectedIndex(); |
| 1076 | } |
| 1077 | else { |
| 1078 | si = comboBox.getSelectedIndex(); |
| 1079 | } |
| 1080 | |
| 1081 | if ( si < comboBox.getModel().getSize() - 1 ) { |
| 1082 | listBox.setSelectedIndex( si + 1 ); |
| 1083 | listBox.ensureIndexIsVisible( si + 1 ); |
| 1084 | if ( !isTableCellEditor ) { |
| 1085 | comboBox.setSelectedIndex(si+1); |
| 1086 | } |
| 1087 | comboBox.repaint(); |
| 1088 | } |
| 1089 | } |
| 1090 | |
| 1091 | /** |
| 1092 | * Selects the previous item in the list. It won't change the selection if the |
| 1093 | * currently selected item is already the first item. |
| 1094 | */ |
| 1095 | protected void selectPreviousPossibleValue() { |
| 1096 | int si; |
| 1097 | |
| 1098 | if ( comboBox.isPopupVisible() ) { |
| 1099 | si = listBox.getSelectedIndex(); |
| 1100 | } |
| 1101 | else { |
| 1102 | si = comboBox.getSelectedIndex(); |
| 1103 | } |
| 1104 | |
| 1105 | if ( si > 0 ) { |
| 1106 | listBox.setSelectedIndex( si - 1 ); |
| 1107 | listBox.ensureIndexIsVisible( si - 1 ); |
| 1108 | if ( !isTableCellEditor ) { |
| 1109 | comboBox.setSelectedIndex(si-1); |
| 1110 | } |
| 1111 | comboBox.repaint(); |
| 1112 | } |
| 1113 | } |
| 1114 | |
| 1115 | /** |
| 1116 | * Hides the popup if it is showing and shows the popup if it is hidden. |
| 1117 | */ |
| 1118 | protected void toggleOpenClose() { |
| 1119 | setPopupVisible(comboBox, !isPopupVisible(comboBox)); |
| 1120 | } |
| 1121 | |
| 1122 | /** |
| 1123 | * Returns the area that is reserved for drawing the currently selected item. |
| 1124 | */ |
| 1125 | protected Rectangle rectangleForCurrentValue() { |
| 1126 | int width = comboBox.getWidth(); |
| 1127 | int height = comboBox.getHeight(); |
| 1128 | Insets insets = getInsets(); |
| 1129 | int buttonSize = height - (insets.top + insets.bottom); |
| 1130 | if ( arrowButton != null ) { |
| 1131 | buttonSize = arrowButton.getWidth(); |
| 1132 | } |
| 1133 | if(BasicGraphicsUtils.isLeftToRight(comboBox)) { |
| 1134 | return new Rectangle(insets.left, insets.top, |
| 1135 | width - (insets.left + insets.right + buttonSize), |
| 1136 | height - (insets.top + insets.bottom)); |
| 1137 | } |
| 1138 | else { |
| 1139 | return new Rectangle(insets.left + buttonSize, insets.top, |
| 1140 | width - (insets.left + insets.right + buttonSize), |
| 1141 | height - (insets.top + insets.bottom)); |
| 1142 | } |
| 1143 | } |
| 1144 | |
| 1145 | /** |
| 1146 | * Gets the insets from the JComboBox. |
| 1147 | */ |
| 1148 | protected Insets getInsets() { |
| 1149 | return comboBox.getInsets(); |
| 1150 | } |
| 1151 | |
| 1152 | // |
| 1153 | // end Utility Methods |
| 1154 | //==================== |
| 1155 | |
| 1156 | |
| 1157 | //=============================== |
| 1158 | // begin Painting Utility Methods |
| 1159 | // |
| 1160 | |
| 1161 | /** |
| 1162 | * Paints the currently selected item. |
| 1163 | */ |
| 1164 | public void paintCurrentValue(Graphics g,Rectangle bounds,boolean hasFocus) { |
| 1165 | ListCellRenderer renderer = comboBox.getRenderer(); |
| 1166 | Component c; |
| 1167 | |
| 1168 | if ( hasFocus && !isPopupVisible(comboBox) ) { |
| 1169 | c = renderer.getListCellRendererComponent( listBox, |
| 1170 | comboBox.getSelectedItem(), |
| 1171 | -1, |
| 1172 | true, |
| 1173 | false ); |
| 1174 | } |
| 1175 | else { |
| 1176 | c = renderer.getListCellRendererComponent( listBox, |
| 1177 | comboBox.getSelectedItem(), |
| 1178 | -1, |
| 1179 | false, |
| 1180 | false ); |
| 1181 | c.setBackground(UIManager.getColor("ComboBox.background")); |
| 1182 | } |
| 1183 | c.setFont(comboBox.getFont()); |
| 1184 | if ( hasFocus && !isPopupVisible(comboBox) ) { |
| 1185 | c.setForeground(listBox.getSelectionForeground()); |
| 1186 | c.setBackground(listBox.getSelectionBackground()); |
| 1187 | } |
| 1188 | else { |
| 1189 | if ( comboBox.isEnabled() ) { |
| 1190 | c.setForeground(comboBox.getForeground()); |
| 1191 | c.setBackground(comboBox.getBackground()); |
| 1192 | } |
| 1193 | else { |
| 1194 | c.setForeground(DefaultLookup.getColor( |
| 1195 | comboBox, this, "ComboBox.disabledForeground", null)); |
| 1196 | c.setBackground(DefaultLookup.getColor( |
| 1197 | comboBox, this, "ComboBox.disabledBackground", null)); |
| 1198 | } |
| 1199 | } |
| 1200 | |
| 1201 | // Fix for 4238829: should lay out the JPanel. |
| 1202 | boolean shouldValidate = false; |
| 1203 | if (c instanceof JPanel) { |
| 1204 | shouldValidate = true; |
| 1205 | } |
| 1206 | |
| 1207 | currentValuePane.paintComponent(g,c,comboBox,bounds.x,bounds.y, |
| 1208 | bounds.width,bounds.height, shouldValidate); |
| 1209 | } |
| 1210 | |
| 1211 | /** |
| 1212 | * Paints the background of the currently selected item. |
| 1213 | */ |
| 1214 | public void paintCurrentValueBackground(Graphics g,Rectangle bounds,boolean hasFocus) { |
| 1215 | Color t = g.getColor(); |
| 1216 | if ( comboBox.isEnabled() ) |
| 1217 | g.setColor(DefaultLookup.getColor(comboBox, this, |
| 1218 | "ComboBox.background", null)); |
| 1219 | else |
| 1220 | g.setColor(DefaultLookup.getColor(comboBox, this, |
| 1221 | "ComboBox.disabledBackground", null)); |
| 1222 | g.fillRect(bounds.x,bounds.y,bounds.width,bounds.height); |
| 1223 | g.setColor(t); |
| 1224 | } |
| 1225 | |
| 1226 | /** |
| 1227 | * Repaint the currently selected item. |
| 1228 | */ |
| 1229 | void repaintCurrentValue() { |
| 1230 | Rectangle r = rectangleForCurrentValue(); |
| 1231 | comboBox.repaint(r.x,r.y,r.width,r.height); |
| 1232 | } |
| 1233 | |
| 1234 | // |
| 1235 | // end Painting Utility Methods |
| 1236 | //============================= |
| 1237 | |
| 1238 | |
| 1239 | //=============================== |
| 1240 | // begin Size Utility Methods |
| 1241 | // |
| 1242 | |
| 1243 | /** |
| 1244 | * Return the default size of an empty display area of the combo box using |
| 1245 | * the current renderer and font. |
| 1246 | * |
| 1247 | * @return the size of an empty display area |
| 1248 | * @see #getDisplaySize |
| 1249 | */ |
| 1250 | protected Dimension getDefaultSize() { |
| 1251 | // Calculates the height and width using the default text renderer |
| 1252 | Dimension d = getSizeForComponent(getDefaultListCellRenderer().getListCellRendererComponent(listBox, " ", -1, false, false)); |
| 1253 | |
| 1254 | return new Dimension(d.width, d.height); |
| 1255 | } |
| 1256 | |
| 1257 | /** |
| 1258 | * Returns the calculated size of the display area. The display area is the |
| 1259 | * portion of the combo box in which the selected item is displayed. This |
| 1260 | * method will use the prototype display value if it has been set. |
| 1261 | * <p> |
| 1262 | * For combo boxes with a non trivial number of items, it is recommended to |
| 1263 | * use a prototype display value to significantly speed up the display |
| 1264 | * size calculation. |
| 1265 | * |
| 1266 | * @return the size of the display area calculated from the combo box items |
| 1267 | * @see javax.swing.JComboBox#setPrototypeDisplayValue |
| 1268 | */ |
| 1269 | protected Dimension getDisplaySize() { |
| 1270 | if (!isDisplaySizeDirty) { |
| 1271 | return new Dimension(cachedDisplaySize); |
| 1272 | } |
| 1273 | Dimension result = new Dimension(); |
| 1274 | |
| 1275 | ListCellRenderer renderer = comboBox.getRenderer(); |
| 1276 | if (renderer == null) { |
| 1277 | renderer = new DefaultListCellRenderer(); |
| 1278 | } |
| 1279 | |
| 1280 | sameBaseline = true; |
| 1281 | |
| 1282 | Object prototypeValue = comboBox.getPrototypeDisplayValue(); |
| 1283 | if (prototypeValue != null) { |
| 1284 | // Calculates the dimension based on the prototype value |
| 1285 | result = getSizeForComponent(renderer.getListCellRendererComponent(listBox, |
| 1286 | prototypeValue, |
| 1287 | -1, false, false)); |
| 1288 | } else { |
| 1289 | // Calculate the dimension by iterating over all the elements in the combo |
| 1290 | // box list. |
| 1291 | ComboBoxModel model = comboBox.getModel(); |
| 1292 | int modelSize = model.getSize(); |
| 1293 | int baseline = -1; |
| 1294 | Dimension d; |
| 1295 | |
| 1296 | Component cpn; |
| 1297 | |
| 1298 | if (modelSize > 0 ) { |
| 1299 | for (int i = 0; i < modelSize ; i++ ) { |
| 1300 | // Calculates the maximum height and width based on the largest |
| 1301 | // element |
| 1302 | Object value = model.getElementAt(i); |
| 1303 | Component c = renderer.getListCellRendererComponent( |
| 1304 | listBox, value, -1, false, false); |
| 1305 | d = getSizeForComponent(c); |
| 1306 | if (sameBaseline && value != null && |
| 1307 | (!(value instanceof String) || !"".equals(value))) { |
| 1308 | int newBaseline = c.getBaseline(d.width, d.height); |
| 1309 | if (newBaseline == -1) { |
| 1310 | sameBaseline = false; |
| 1311 | } |
| 1312 | else if (baseline == -1) { |
| 1313 | baseline = newBaseline; |
| 1314 | } |
| 1315 | else if (baseline != newBaseline) { |
| 1316 | sameBaseline = false; |
| 1317 | } |
| 1318 | } |
| 1319 | result.width = Math.max(result.width,d.width); |
| 1320 | result.height = Math.max(result.height,d.height); |
| 1321 | } |
| 1322 | } else { |
| 1323 | result = getDefaultSize(); |
| 1324 | if (comboBox.isEditable()) { |
| 1325 | result.width = 100; |
| 1326 | } |
| 1327 | } |
| 1328 | } |
| 1329 | |
| 1330 | if ( comboBox.isEditable() ) { |
| 1331 | Dimension d = editor.getPreferredSize(); |
| 1332 | result.width = Math.max(result.width,d.width); |
| 1333 | result.height = Math.max(result.height,d.height); |
| 1334 | } |
| 1335 | |
| 1336 | // Set the cached value |
| 1337 | cachedDisplaySize.setSize(result.width, result.height); |
| 1338 | isDisplaySizeDirty = false; |
| 1339 | |
| 1340 | return result; |
| 1341 | } |
| 1342 | |
| 1343 | /** |
| 1344 | * This has been refactored out in hopes that it may be investigated and |
| 1345 | * simplified for the next major release. adding/removing |
| 1346 | * the component to the currentValuePane and changing the font may be |
| 1347 | * redundant operations. |
| 1348 | */ |
| 1349 | private Dimension getSizeForComponent(Component comp) { |
| 1350 | currentValuePane.add(comp); |
| 1351 | comp.setFont(comboBox.getFont()); |
| 1352 | Dimension d = comp.getPreferredSize(); |
| 1353 | currentValuePane.remove(comp); |
| 1354 | return d; |
| 1355 | } |
| 1356 | |
| 1357 | |
| 1358 | // |
| 1359 | // end Size Utility Methods |
| 1360 | //============================= |
| 1361 | |
| 1362 | |
| 1363 | //================================= |
| 1364 | // begin Keyboard Action Management |
| 1365 | // |
| 1366 | |
| 1367 | /** |
| 1368 | * Adds keyboard actions to the JComboBox. Actions on enter and esc are already |
| 1369 | * supplied. Add more actions as you need them. |
| 1370 | */ |
| 1371 | protected void installKeyboardActions() { |
| 1372 | InputMap km = getInputMap(JComponent.WHEN_ANCESTOR_OF_FOCUSED_COMPONENT); |
| 1373 | SwingUtilities.replaceUIInputMap(comboBox, JComponent. |
| 1374 | WHEN_ANCESTOR_OF_FOCUSED_COMPONENT, km); |
| 1375 | |
| 1376 | |
| 1377 | LazyActionMap.installLazyActionMap(comboBox, BasicComboBoxUI.class, |
| 1378 | "ComboBox.actionMap"); |
| 1379 | } |
| 1380 | |
| 1381 | InputMap getInputMap(int condition) { |
| 1382 | if (condition == JComponent.WHEN_ANCESTOR_OF_FOCUSED_COMPONENT) { |
| 1383 | return (InputMap)DefaultLookup.get(comboBox, this, |
| 1384 | "ComboBox.ancestorInputMap"); |
| 1385 | } |
| 1386 | return null; |
| 1387 | } |
| 1388 | |
| 1389 | boolean isTableCellEditor() { |
| 1390 | return isTableCellEditor; |
| 1391 | } |
| 1392 | |
| 1393 | /** |
| 1394 | * Removes the focus InputMap and ActionMap. |
| 1395 | */ |
| 1396 | protected void uninstallKeyboardActions() { |
| 1397 | SwingUtilities.replaceUIInputMap(comboBox, JComponent. |
| 1398 | WHEN_ANCESTOR_OF_FOCUSED_COMPONENT, null); |
| 1399 | SwingUtilities.replaceUIActionMap(comboBox, null); |
| 1400 | } |
| 1401 | |
| 1402 | |
| 1403 | // |
| 1404 | // Actions |
| 1405 | // |
| 1406 | private static class Actions extends UIAction { |
| 1407 | private static final String HIDE = "hidePopup"; |
| 1408 | private static final String DOWN = "selectNext"; |
| 1409 | private static final String DOWN_2 = "selectNext2"; |
| 1410 | private static final String TOGGLE = "togglePopup"; |
| 1411 | private static final String TOGGLE_2 = "spacePopup"; |
| 1412 | private static final String UP = "selectPrevious"; |
| 1413 | private static final String UP_2 = "selectPrevious2"; |
| 1414 | private static final String ENTER = "enterPressed"; |
| 1415 | private static final String PAGE_DOWN = "pageDownPassThrough"; |
| 1416 | private static final String PAGE_UP = "pageUpPassThrough"; |
| 1417 | private static final String HOME = "homePassThrough"; |
| 1418 | private static final String END = "endPassThrough"; |
| 1419 | |
| 1420 | Actions(String name) { |
| 1421 | super(name); |
| 1422 | } |
| 1423 | |
| 1424 | public void actionPerformed( ActionEvent e ) { |
| 1425 | String key = getName(); |
| 1426 | JComboBox comboBox = (JComboBox)e.getSource(); |
| 1427 | BasicComboBoxUI ui = (BasicComboBoxUI)BasicLookAndFeel.getUIOfType( |
| 1428 | comboBox.getUI(), BasicComboBoxUI.class); |
| 1429 | if (key == HIDE) { |
| 1430 | comboBox.firePopupMenuCanceled(); |
| 1431 | comboBox.setPopupVisible(false); |
| 1432 | } |
| 1433 | else if (key == PAGE_DOWN || key == PAGE_UP || |
| 1434 | key == HOME || key == END) { |
| 1435 | int index = getNextIndex(comboBox, key); |
| 1436 | if (index >= 0 && index < comboBox.getItemCount()) { |
| 1437 | comboBox.setSelectedIndex(index); |
| 1438 | } |
| 1439 | } |
| 1440 | else if (key == DOWN) { |
| 1441 | if (comboBox.isShowing() ) { |
| 1442 | if ( comboBox.isPopupVisible() ) { |
| 1443 | if (ui != null) { |
| 1444 | ui.selectNextPossibleValue(); |
| 1445 | } |
| 1446 | } else { |
| 1447 | comboBox.setPopupVisible(true); |
| 1448 | } |
| 1449 | } |
| 1450 | } |
| 1451 | else if (key == DOWN_2) { |
| 1452 | // Special case in which pressing the arrow keys will not |
| 1453 | // make the popup appear - except for editable combo boxes |
| 1454 | // and combo boxes inside a table. |
| 1455 | if (comboBox.isShowing() ) { |
| 1456 | if ( (comboBox.isEditable() || |
| 1457 | (ui != null && ui.isTableCellEditor())) |
| 1458 | && !comboBox.isPopupVisible() ) { |
| 1459 | comboBox.setPopupVisible(true); |
| 1460 | } else { |
| 1461 | if (ui != null) { |
| 1462 | ui.selectNextPossibleValue(); |
| 1463 | } |
| 1464 | } |
| 1465 | } |
| 1466 | } |
| 1467 | else if (key == TOGGLE || key == TOGGLE_2) { |
| 1468 | if (ui != null && (key == TOGGLE || !comboBox.isEditable())) { |
| 1469 | if ( ui.isTableCellEditor() ) { |
| 1470 | // Forces the selection of the list item if the |
| 1471 | // combo box is in a JTable. |
| 1472 | comboBox.setSelectedIndex(ui.popup.getList(). |
| 1473 | getSelectedIndex()); |
| 1474 | } |
| 1475 | else { |
| 1476 | comboBox.setPopupVisible(!comboBox.isPopupVisible()); |
| 1477 | } |
| 1478 | } |
| 1479 | } |
| 1480 | else if (key == UP) { |
| 1481 | if (ui != null) { |
| 1482 | if (ui.isPopupVisible(comboBox)) { |
| 1483 | ui.selectPreviousPossibleValue(); |
| 1484 | } |
| 1485 | else if (DefaultLookup.getBoolean(comboBox, ui, |
| 1486 | "ComboBox.showPopupOnNavigation", false)) { |
| 1487 | ui.setPopupVisible(comboBox, true); |
| 1488 | } |
| 1489 | } |
| 1490 | } |
| 1491 | else if (key == UP_2) { |
| 1492 | // Special case in which pressing the arrow keys will not |
| 1493 | // make the popup appear - except for editable combo boxes. |
| 1494 | if (comboBox.isShowing() && ui != null) { |
| 1495 | if ( comboBox.isEditable() && !comboBox.isPopupVisible()) { |
| 1496 | comboBox.setPopupVisible(true); |
| 1497 | } else { |
| 1498 | ui.selectPreviousPossibleValue(); |
| 1499 | } |
| 1500 | } |
| 1501 | } |
| 1502 | |
| 1503 | else if (key == ENTER) { |
| 1504 | if (comboBox.isPopupVisible()) { |
| 1505 | // Forces the selection of the list item |
| 1506 | boolean isEnterSelectablePopup = |
| 1507 | UIManager.getBoolean("ComboBox.isEnterSelectablePopup"); |
| 1508 | if (!comboBox.isEditable() || isEnterSelectablePopup |
| 1509 | || ui.isTableCellEditor) { |
| 1510 | Object listItem = ui.popup.getList().getSelectedValue(); |
| 1511 | if (listItem != null) { |
| 1512 | comboBox.getModel().setSelectedItem(listItem); |
| 1513 | // Ensure that JComboBox.actionPerformed() |
| 1514 | // doesn't set editor value as selected item |
| 1515 | comboBox.getEditor().setItem(listItem); |
| 1516 | } |
| 1517 | } |
| 1518 | comboBox.setPopupVisible(false); |
| 1519 | } |
| 1520 | else { |
| 1521 | // Call the default button binding. |
| 1522 | // This is a pretty messy way of passing an event through |
| 1523 | // to the root pane. |
| 1524 | JRootPane root = SwingUtilities.getRootPane(comboBox); |
| 1525 | if (root != null) { |
| 1526 | InputMap im = root.getInputMap(JComponent.WHEN_IN_FOCUSED_WINDOW); |
| 1527 | ActionMap am = root.getActionMap(); |
| 1528 | if (im != null && am != null) { |
| 1529 | Object obj = im.get(KeyStroke.getKeyStroke(KeyEvent.VK_ENTER,0)); |
| 1530 | if (obj != null) { |
| 1531 | Action action = am.get(obj); |
| 1532 | if (action != null) { |
| 1533 | action.actionPerformed(new ActionEvent( |
| 1534 | root, e.getID(), e.getActionCommand(), |
| 1535 | e.getWhen(), e.getModifiers())); |
| 1536 | } |
| 1537 | } |
| 1538 | } |
| 1539 | } |
| 1540 | } |
| 1541 | } |
| 1542 | } |
| 1543 | |
| 1544 | private int getNextIndex(JComboBox comboBox, String key) { |
| 1545 | if (key == PAGE_UP) { |
| 1546 | int listHeight = comboBox.getMaximumRowCount(); |
| 1547 | int index = comboBox.getSelectedIndex() - listHeight; |
| 1548 | return (index < 0 ? 0: index); |
| 1549 | } |
| 1550 | else if (key == PAGE_DOWN) { |
| 1551 | int listHeight = comboBox.getMaximumRowCount(); |
| 1552 | int index = comboBox.getSelectedIndex() + listHeight; |
| 1553 | int max = comboBox.getItemCount(); |
| 1554 | return (index < max ? index: max-1); |
| 1555 | } |
| 1556 | else if (key == HOME) { |
| 1557 | return 0; |
| 1558 | } |
| 1559 | else if (key == END) { |
| 1560 | return comboBox.getItemCount() - 1; |
| 1561 | } |
| 1562 | return comboBox.getSelectedIndex(); |
| 1563 | } |
| 1564 | |
| 1565 | public boolean isEnabled(Object c) { |
| 1566 | if (getName() == HIDE) { |
| 1567 | return (c != null && ((JComboBox)c).isPopupVisible()); |
| 1568 | } |
| 1569 | return true; |
| 1570 | } |
| 1571 | } |
| 1572 | // |
| 1573 | // end Keyboard Action Management |
| 1574 | //=============================== |
| 1575 | |
| 1576 | |
| 1577 | // |
| 1578 | // Shared Handler, implements all listeners |
| 1579 | // |
| 1580 | private class Handler implements ActionListener, FocusListener, |
| 1581 | KeyListener, LayoutManager, |
| 1582 | ListDataListener, PropertyChangeListener { |
| 1583 | // |
| 1584 | // PropertyChangeListener |
| 1585 | // |
| 1586 | public void propertyChange(PropertyChangeEvent e) { |
| 1587 | String propertyName = e.getPropertyName(); |
| 1588 | JComboBox comboBox = (JComboBox)e.getSource(); |
| 1589 | |
| 1590 | if ( propertyName == "model" ) { |
| 1591 | ComboBoxModel newModel = (ComboBoxModel)e.getNewValue(); |
| 1592 | ComboBoxModel oldModel = (ComboBoxModel)e.getOldValue(); |
| 1593 | |
| 1594 | if ( oldModel != null && listDataListener != null ) { |
| 1595 | oldModel.removeListDataListener( listDataListener ); |
| 1596 | } |
| 1597 | |
| 1598 | if ( newModel != null && listDataListener != null ) { |
| 1599 | newModel.addListDataListener( listDataListener ); |
| 1600 | } |
| 1601 | |
| 1602 | if ( editor != null ) { |
| 1603 | comboBox.configureEditor( comboBox.getEditor(), comboBox.getSelectedItem() ); |
| 1604 | } |
| 1605 | isMinimumSizeDirty = true; |
| 1606 | isDisplaySizeDirty = true; |
| 1607 | comboBox.revalidate(); |
| 1608 | comboBox.repaint(); |
| 1609 | } |
| 1610 | else if ( propertyName == "editor" && comboBox.isEditable() ) { |
| 1611 | addEditor(); |
| 1612 | comboBox.revalidate(); |
| 1613 | } |
| 1614 | else if ( propertyName == "editable" ) { |
| 1615 | if ( comboBox.isEditable() ) { |
| 1616 | comboBox.setRequestFocusEnabled( false ); |
| 1617 | addEditor(); |
| 1618 | } else { |
| 1619 | comboBox.setRequestFocusEnabled( true ); |
| 1620 | removeEditor(); |
| 1621 | } |
| 1622 | |
| 1623 | updateToolTipTextForChildren(); |
| 1624 | |
| 1625 | comboBox.revalidate(); |
| 1626 | } |
| 1627 | else if ( propertyName == "enabled" ) { |
| 1628 | boolean enabled = comboBox.isEnabled(); |
| 1629 | if ( editor != null ) |
| 1630 | editor.setEnabled(enabled); |
| 1631 | if ( arrowButton != null ) |
| 1632 | arrowButton.setEnabled(enabled); |
| 1633 | comboBox.repaint(); |
| 1634 | } |
| 1635 | else if ( propertyName == "focusable" ) { |
| 1636 | boolean focusable = comboBox.isFocusable(); |
| 1637 | if ( editor != null ) |
| 1638 | editor.setFocusable(focusable); |
| 1639 | if ( arrowButton != null ) |
| 1640 | arrowButton.setFocusable(focusable); |
| 1641 | comboBox.repaint(); |
| 1642 | } |
| 1643 | else if ( propertyName == "maximumRowCount" ) { |
| 1644 | if ( isPopupVisible( comboBox ) ) { |
| 1645 | setPopupVisible(comboBox, false); |
| 1646 | setPopupVisible(comboBox, true); |
| 1647 | } |
| 1648 | } |
| 1649 | else if ( propertyName == "font" ) { |
| 1650 | listBox.setFont( comboBox.getFont() ); |
| 1651 | if ( editor != null ) { |
| 1652 | editor.setFont( comboBox.getFont() ); |
| 1653 | } |
| 1654 | isMinimumSizeDirty = true; |
| 1655 | comboBox.validate(); |
| 1656 | } |
| 1657 | else if ( propertyName == JComponent.TOOL_TIP_TEXT_KEY ) { |
| 1658 | updateToolTipTextForChildren(); |
| 1659 | } |
| 1660 | else if ( propertyName == BasicComboBoxUI.IS_TABLE_CELL_EDITOR ) { |
| 1661 | Boolean inTable = (Boolean)e.getNewValue(); |
| 1662 | isTableCellEditor = inTable.equals(Boolean.TRUE) ? true : false; |
| 1663 | } |
| 1664 | else if (propertyName == "prototypeDisplayValue") { |
| 1665 | isMinimumSizeDirty = true; |
| 1666 | isDisplaySizeDirty = true; |
| 1667 | comboBox.revalidate(); |
| 1668 | } |
| 1669 | else if (propertyName == "renderer") { |
| 1670 | isMinimumSizeDirty = true; |
| 1671 | isDisplaySizeDirty = true; |
| 1672 | comboBox.revalidate(); |
| 1673 | } |
| 1674 | } |
| 1675 | |
| 1676 | |
| 1677 | // |
| 1678 | // KeyListener |
| 1679 | // |
| 1680 | |
| 1681 | // This listener checks to see if the key event isn't a navigation |
| 1682 | // key. If it finds a key event that wasn't a navigation key it |
| 1683 | // dispatches it to JComboBox.selectWithKeyChar() so that it can do |
| 1684 | // type-ahead. |
| 1685 | public void keyPressed( KeyEvent e ) { |
| 1686 | if ( isNavigationKey(e.getKeyCode(), e.getModifiers()) ) { |
| 1687 | lastTime = 0L; |
| 1688 | } else if ( comboBox.isEnabled() && comboBox.getModel().getSize()!=0 && |
| 1689 | isTypeAheadKey( e ) && e.getKeyChar() != KeyEvent.CHAR_UNDEFINED) { |
| 1690 | time = e.getWhen(); |
| 1691 | if ( comboBox.selectWithKeyChar(e.getKeyChar()) ) { |
| 1692 | e.consume(); |
| 1693 | } |
| 1694 | } |
| 1695 | } |
| 1696 | |
| 1697 | public void keyTyped(KeyEvent e) { |
| 1698 | } |
| 1699 | |
| 1700 | public void keyReleased(KeyEvent e) { |
| 1701 | } |
| 1702 | |
| 1703 | private boolean isTypeAheadKey( KeyEvent e ) { |
| 1704 | return !e.isAltDown() && !e.isControlDown() && !e.isMetaDown(); |
| 1705 | } |
| 1706 | |
| 1707 | // |
| 1708 | // FocusListener |
| 1709 | // |
| 1710 | // NOTE: The class is added to both the Editor and ComboBox. |
| 1711 | // The combo box listener hides the popup when the focus is lost. |
| 1712 | // It also repaints when focus is gained or lost. |
| 1713 | |
| 1714 | public void focusGained( FocusEvent e ) { |
| 1715 | ComboBoxEditor comboBoxEditor = comboBox.getEditor(); |
| 1716 | |
| 1717 | if ( (comboBoxEditor != null) && |
| 1718 | (e.getSource() == comboBoxEditor.getEditorComponent()) ) { |
| 1719 | return; |
| 1720 | } |
| 1721 | hasFocus = true; |
| 1722 | comboBox.repaint(); |
| 1723 | |
| 1724 | if (comboBox.isEditable() && editor != null) { |
| 1725 | editor.requestFocus(); |
| 1726 | } |
| 1727 | } |
| 1728 | |
| 1729 | public void focusLost( FocusEvent e ) { |
| 1730 | ComboBoxEditor editor = comboBox.getEditor(); |
| 1731 | if ( (editor != null) && |
| 1732 | (e.getSource() == editor.getEditorComponent()) ) { |
| 1733 | Object item = editor.getItem(); |
| 1734 | |
| 1735 | Object selectedItem = comboBox.getSelectedItem(); |
| 1736 | if (!e.isTemporary() && item != null && |
| 1737 | !item.equals((selectedItem == null) ? "" : selectedItem )) { |
| 1738 | comboBox.actionPerformed |
| 1739 | (new ActionEvent(editor, 0, "", |
| 1740 | EventQueue.getMostRecentEventTime(), 0)); |
| 1741 | } |
| 1742 | } |
| 1743 | |
| 1744 | hasFocus = false; |
| 1745 | if (!e.isTemporary()) { |
| 1746 | setPopupVisible(comboBox, false); |
| 1747 | } |
| 1748 | comboBox.repaint(); |
| 1749 | } |
| 1750 | |
| 1751 | // |
| 1752 | // ListDataListener |
| 1753 | // |
| 1754 | |
| 1755 | // This listener watches for changes in the ComboBoxModel |
| 1756 | public void contentsChanged( ListDataEvent e ) { |
| 1757 | if ( !(e.getIndex0() == -1 && e.getIndex1() == -1) ) { |
| 1758 | isMinimumSizeDirty = true; |
| 1759 | comboBox.revalidate(); |
| 1760 | } |
| 1761 | |
| 1762 | // set the editor with the selected item since this |
| 1763 | // is the event handler for a selected item change. |
| 1764 | if (comboBox.isEditable() && editor != null) { |
| 1765 | comboBox.configureEditor( comboBox.getEditor(), |
| 1766 | comboBox.getSelectedItem() ); |
| 1767 | } |
| 1768 | |
| 1769 | isDisplaySizeDirty = true; |
| 1770 | comboBox.repaint(); |
| 1771 | } |
| 1772 | |
| 1773 | public void intervalAdded( ListDataEvent e ) { |
| 1774 | contentsChanged( e ); |
| 1775 | } |
| 1776 | |
| 1777 | public void intervalRemoved( ListDataEvent e ) { |
| 1778 | contentsChanged( e ); |
| 1779 | } |
| 1780 | |
| 1781 | // |
| 1782 | // LayoutManager |
| 1783 | // |
| 1784 | |
| 1785 | // This layout manager handles the 'standard' layout of combo boxes. |
| 1786 | // It puts the arrow button to the right and the editor to the left. |
| 1787 | // If there is no editor it still keeps the arrow button to the right. |
| 1788 | public void addLayoutComponent(String name, Component comp) {} |
| 1789 | |
| 1790 | public void removeLayoutComponent(Component comp) {} |
| 1791 | |
| 1792 | public Dimension preferredLayoutSize(Container parent) { |
| 1793 | return parent.getPreferredSize(); |
| 1794 | } |
| 1795 | |
| 1796 | public Dimension minimumLayoutSize(Container parent) { |
| 1797 | return parent.getMinimumSize(); |
| 1798 | } |
| 1799 | |
| 1800 | public void layoutContainer(Container parent) { |
| 1801 | JComboBox cb = (JComboBox)parent; |
| 1802 | int width = cb.getWidth(); |
| 1803 | int height = cb.getHeight(); |
| 1804 | |
| 1805 | Insets insets = getInsets(); |
| 1806 | int buttonSize = height - (insets.top + insets.bottom); |
| 1807 | Rectangle cvb; |
| 1808 | |
| 1809 | if ( arrowButton != null ) { |
| 1810 | if(BasicGraphicsUtils.isLeftToRight(cb)) { |
| 1811 | arrowButton.setBounds( width - (insets.right + buttonSize), |
| 1812 | insets.top, |
| 1813 | buttonSize, buttonSize); |
| 1814 | } |
| 1815 | else { |
| 1816 | arrowButton.setBounds( insets.left, insets.top, |
| 1817 | buttonSize, buttonSize); |
| 1818 | } |
| 1819 | } |
| 1820 | if ( editor != null ) { |
| 1821 | cvb = rectangleForCurrentValue(); |
| 1822 | editor.setBounds(cvb); |
| 1823 | } |
| 1824 | } |
| 1825 | |
| 1826 | |
| 1827 | // |
| 1828 | // ActionListener |
| 1829 | // |
| 1830 | // Fix for 4515752: Forward the Enter pressed on the |
| 1831 | // editable combo box to the default button |
| 1832 | |
| 1833 | // Note: This could depend on event ordering. The first ActionEvent |
| 1834 | // from the editor may be handled by the JComboBox in which case, the |
| 1835 | // enterPressed action will always be invoked. |
| 1836 | public void actionPerformed(ActionEvent evt) { |
| 1837 | Object item = comboBox.getEditor().getItem(); |
| 1838 | if (item != null) { |
| 1839 | if(!comboBox.isPopupVisible() && !item.equals(comboBox.getSelectedItem())) { |
| 1840 | comboBox.setSelectedItem(comboBox.getEditor().getItem()); |
| 1841 | } |
| 1842 | ActionMap am = comboBox.getActionMap(); |
| 1843 | if (am != null) { |
| 1844 | Action action = am.get("enterPressed"); |
| 1845 | if (action != null) { |
| 1846 | action.actionPerformed(new ActionEvent(comboBox, evt.getID(), |
| 1847 | evt.getActionCommand(), |
| 1848 | evt.getModifiers())); |
| 1849 | } |
| 1850 | } |
| 1851 | } |
| 1852 | } |
| 1853 | } |
| 1854 | |
| 1855 | class DefaultKeySelectionManager implements JComboBox.KeySelectionManager, UIResource { |
| 1856 | private String prefix = ""; |
| 1857 | private String typedString = ""; |
| 1858 | |
| 1859 | public int selectionForKey(char aKey,ComboBoxModel aModel) { |
| 1860 | if (lastTime == 0L) { |
| 1861 | prefix = ""; |
| 1862 | typedString = ""; |
| 1863 | } |
| 1864 | boolean startingFromSelection = true; |
| 1865 | |
| 1866 | int startIndex = comboBox.getSelectedIndex(); |
| 1867 | if (time - lastTime < timeFactor) { |
| 1868 | typedString += aKey; |
| 1869 | if((prefix.length() == 1) && (aKey == prefix.charAt(0))) { |
| 1870 | // Subsequent same key presses move the keyboard focus to the next |
| 1871 | // object that starts with the same letter. |
| 1872 | startIndex++; |
| 1873 | } else { |
| 1874 | prefix = typedString; |
| 1875 | } |
| 1876 | } else { |
| 1877 | startIndex++; |
| 1878 | typedString = "" + aKey; |
| 1879 | prefix = typedString; |
| 1880 | } |
| 1881 | lastTime = time; |
| 1882 | |
| 1883 | if (startIndex < 0 || startIndex >= aModel.getSize()) { |
| 1884 | startingFromSelection = false; |
| 1885 | startIndex = 0; |
| 1886 | } |
| 1887 | int index = listBox.getNextMatch(prefix, startIndex, |
| 1888 | Position.Bias.Forward); |
| 1889 | if (index < 0 && startingFromSelection) { // wrap |
| 1890 | index = listBox.getNextMatch(prefix, 0, |
| 1891 | Position.Bias.Forward); |
| 1892 | } |
| 1893 | return index; |
| 1894 | } |
| 1895 | } |
| 1896 | |
| 1897 | } |