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 | |
| 27 | package javax.swing.plaf.basic; |
| 28 | |
| 29 | |
| 30 | import sun.swing.DefaultLookup; |
| 31 | import sun.swing.UIAction; |
| 32 | import javax.swing.*; |
| 33 | import javax.swing.border.Border; |
| 34 | import javax.swing.event.*; |
| 35 | import java.awt.*; |
| 36 | import java.awt.event.*; |
| 37 | import java.awt.peer.ComponentPeer; |
| 38 | import java.awt.peer.LightweightPeer; |
| 39 | import java.beans.*; |
| 40 | import java.util.*; |
| 41 | import javax.swing.plaf.ActionMapUIResource; |
| 42 | import javax.swing.plaf.SplitPaneUI; |
| 43 | import javax.swing.plaf.ComponentUI; |
| 44 | import javax.swing.plaf.UIResource; |
| 45 | import sun.swing.SwingUtilities2; |
| 46 | |
| 47 | |
| 48 | /** |
| 49 | * A Basic L&F implementation of the SplitPaneUI. |
| 50 | * |
| 51 | * @author Scott Violet |
| 52 | * @author Steve Wilson |
| 53 | * @author Ralph Kar |
| 54 | */ |
| 55 | public class BasicSplitPaneUI extends SplitPaneUI |
| 56 | { |
| 57 | /** |
| 58 | * The divider used for non-continuous layout is added to the split pane |
| 59 | * with this object. |
| 60 | */ |
| 61 | protected static final String NON_CONTINUOUS_DIVIDER = |
| 62 | "nonContinuousDivider"; |
| 63 | |
| 64 | |
| 65 | /** |
| 66 | * How far (relative) the divider does move when it is moved around by |
| 67 | * the cursor keys on the keyboard. |
| 68 | */ |
| 69 | protected static int KEYBOARD_DIVIDER_MOVE_OFFSET = 3; |
| 70 | |
| 71 | |
| 72 | /** |
| 73 | * JSplitPane instance this instance is providing |
| 74 | * the look and feel for. |
| 75 | */ |
| 76 | protected JSplitPane splitPane; |
| 77 | |
| 78 | |
| 79 | /** |
| 80 | * LayoutManager that is created and placed into the split pane. |
| 81 | */ |
| 82 | protected BasicHorizontalLayoutManager layoutManager; |
| 83 | |
| 84 | |
| 85 | /** |
| 86 | * Instance of the divider for this JSplitPane. |
| 87 | */ |
| 88 | protected BasicSplitPaneDivider divider; |
| 89 | |
| 90 | |
| 91 | /** |
| 92 | * Instance of the PropertyChangeListener for this JSplitPane. |
| 93 | */ |
| 94 | protected PropertyChangeListener propertyChangeListener; |
| 95 | |
| 96 | |
| 97 | /** |
| 98 | * Instance of the FocusListener for this JSplitPane. |
| 99 | */ |
| 100 | protected FocusListener focusListener; |
| 101 | |
| 102 | private Handler handler; |
| 103 | |
| 104 | |
| 105 | /** |
| 106 | * Keys to use for forward focus traversal when the JComponent is |
| 107 | * managing focus. |
| 108 | */ |
| 109 | private static Set managingFocusForwardTraversalKeys; |
| 110 | |
| 111 | /** |
| 112 | * Keys to use for backward focus traversal when the JComponent is |
| 113 | * managing focus. |
| 114 | */ |
| 115 | private static Set managingFocusBackwardTraversalKeys; |
| 116 | |
| 117 | |
| 118 | /** |
| 119 | * The size of the divider while the dragging session is valid. |
| 120 | */ |
| 121 | protected int dividerSize; |
| 122 | |
| 123 | |
| 124 | /** |
| 125 | * Instance for the shadow of the divider when non continuous layout |
| 126 | * is being used. |
| 127 | */ |
| 128 | protected Component nonContinuousLayoutDivider; |
| 129 | |
| 130 | |
| 131 | /** |
| 132 | * Set to true in startDragging if any of the children |
| 133 | * (not including the nonContinuousLayoutDivider) are heavy weights. |
| 134 | */ |
| 135 | protected boolean draggingHW; |
| 136 | |
| 137 | |
| 138 | /** |
| 139 | * Location of the divider when the dragging session began. |
| 140 | */ |
| 141 | protected int beginDragDividerLocation; |
| 142 | |
| 143 | |
| 144 | /** |
| 145 | * As of Java 2 platform v1.3 this previously undocumented field is no |
| 146 | * longer used. |
| 147 | * Key bindings are now defined by the LookAndFeel, please refer to |
| 148 | * the key bindings specification for further details. |
| 149 | * |
| 150 | * @deprecated As of Java 2 platform v1.3. |
| 151 | */ |
| 152 | @Deprecated |
| 153 | protected KeyStroke upKey; |
| 154 | /** |
| 155 | * As of Java 2 platform v1.3 this previously undocumented field is no |
| 156 | * longer used. |
| 157 | * Key bindings are now defined by the LookAndFeel, please refer to |
| 158 | * the key bindings specification for further details. |
| 159 | * |
| 160 | * @deprecated As of Java 2 platform v1.3. |
| 161 | */ |
| 162 | @Deprecated |
| 163 | protected KeyStroke downKey; |
| 164 | /** |
| 165 | * As of Java 2 platform v1.3 this previously undocumented field is no |
| 166 | * longer used. |
| 167 | * Key bindings are now defined by the LookAndFeel, please refer to |
| 168 | * the key bindings specification for further details. |
| 169 | * |
| 170 | * @deprecated As of Java 2 platform v1.3. |
| 171 | */ |
| 172 | @Deprecated |
| 173 | protected KeyStroke leftKey; |
| 174 | /** |
| 175 | * As of Java 2 platform v1.3 this previously undocumented field is no |
| 176 | * longer used. |
| 177 | * Key bindings are now defined by the LookAndFeel, please refer to |
| 178 | * the key bindings specification for further details. |
| 179 | * |
| 180 | * @deprecated As of Java 2 platform v1.3. |
| 181 | */ |
| 182 | @Deprecated |
| 183 | protected KeyStroke rightKey; |
| 184 | /** |
| 185 | * As of Java 2 platform v1.3 this previously undocumented field is no |
| 186 | * longer used. |
| 187 | * Key bindings are now defined by the LookAndFeel, please refer to |
| 188 | * the key bindings specification for further details. |
| 189 | * |
| 190 | * @deprecated As of Java 2 platform v1.3. |
| 191 | */ |
| 192 | @Deprecated |
| 193 | protected KeyStroke homeKey; |
| 194 | /** |
| 195 | * As of Java 2 platform v1.3 this previously undocumented field is no |
| 196 | * longer used. |
| 197 | * Key bindings are now defined by the LookAndFeel, please refer to |
| 198 | * the key bindings specification for further details. |
| 199 | * |
| 200 | * @deprecated As of Java 2 platform v1.3. |
| 201 | */ |
| 202 | @Deprecated |
| 203 | protected KeyStroke endKey; |
| 204 | /** |
| 205 | * As of Java 2 platform v1.3 this previously undocumented field is no |
| 206 | * longer used. |
| 207 | * Key bindings are now defined by the LookAndFeel, please refer to |
| 208 | * the key bindings specification for further details. |
| 209 | * |
| 210 | * @deprecated As of Java 2 platform v1.3. |
| 211 | */ |
| 212 | @Deprecated |
| 213 | protected KeyStroke dividerResizeToggleKey; |
| 214 | |
| 215 | /** |
| 216 | * As of Java 2 platform v1.3 this previously undocumented field is no |
| 217 | * longer used. |
| 218 | * Key bindings are now defined by the LookAndFeel, please refer to |
| 219 | * the key bindings specification for further details. |
| 220 | * |
| 221 | * @deprecated As of Java 2 platform v1.3. |
| 222 | */ |
| 223 | @Deprecated |
| 224 | protected ActionListener keyboardUpLeftListener; |
| 225 | /** |
| 226 | * As of Java 2 platform v1.3 this previously undocumented field is no |
| 227 | * longer used. |
| 228 | * Key bindings are now defined by the LookAndFeel, please refer to |
| 229 | * the key bindings specification for further details. |
| 230 | * |
| 231 | * @deprecated As of Java 2 platform v1.3. |
| 232 | */ |
| 233 | @Deprecated |
| 234 | protected ActionListener keyboardDownRightListener; |
| 235 | /** |
| 236 | * As of Java 2 platform v1.3 this previously undocumented field is no |
| 237 | * longer used. |
| 238 | * Key bindings are now defined by the LookAndFeel, please refer to |
| 239 | * the key bindings specification for further details. |
| 240 | * |
| 241 | * @deprecated As of Java 2 platform v1.3. |
| 242 | */ |
| 243 | @Deprecated |
| 244 | protected ActionListener keyboardHomeListener; |
| 245 | /** |
| 246 | * As of Java 2 platform v1.3 this previously undocumented field is no |
| 247 | * longer used. |
| 248 | * Key bindings are now defined by the LookAndFeel, please refer to |
| 249 | * the key bindings specification for further details. |
| 250 | * |
| 251 | * @deprecated As of Java 2 platform v1.3. |
| 252 | */ |
| 253 | @Deprecated |
| 254 | protected ActionListener keyboardEndListener; |
| 255 | /** |
| 256 | * As of Java 2 platform v1.3 this previously undocumented field is no |
| 257 | * longer used. |
| 258 | * Key bindings are now defined by the LookAndFeel, please refer to |
| 259 | * the key bindings specification for further details. |
| 260 | * |
| 261 | * @deprecated As of Java 2 platform v1.3. |
| 262 | */ |
| 263 | @Deprecated |
| 264 | protected ActionListener keyboardResizeToggleListener; |
| 265 | |
| 266 | |
| 267 | // Private data of the instance |
| 268 | private int orientation; |
| 269 | private int lastDragLocation; |
| 270 | private boolean continuousLayout; |
| 271 | private boolean dividerKeyboardResize; |
| 272 | private boolean dividerLocationIsSet; // needed for tracking |
| 273 | // the first occurrence of |
| 274 | // setDividerLocation() |
| 275 | private Color dividerDraggingColor; |
| 276 | private boolean rememberPaneSizes; |
| 277 | |
| 278 | // Indicates wether the one of splitpane sides is expanded |
| 279 | private boolean keepHidden = false; |
| 280 | |
| 281 | /** Indicates that we have painted once. */ |
| 282 | // This is used by the LayoutManager to determine when it should use |
| 283 | // the divider location provided by the JSplitPane. This is used as there |
| 284 | // is no way to determine when the layout process has completed. |
| 285 | boolean painted; |
| 286 | /** If true, setDividerLocation does nothing. */ |
| 287 | boolean ignoreDividerLocationChange; |
| 288 | |
| 289 | |
| 290 | /** |
| 291 | * Creates a new BasicSplitPaneUI instance |
| 292 | */ |
| 293 | public static ComponentUI createUI(JComponent x) { |
| 294 | return new BasicSplitPaneUI(); |
| 295 | } |
| 296 | |
| 297 | static void loadActionMap(LazyActionMap map) { |
| 298 | map.put(new Actions(Actions.NEGATIVE_INCREMENT)); |
| 299 | map.put(new Actions(Actions.POSITIVE_INCREMENT)); |
| 300 | map.put(new Actions(Actions.SELECT_MIN)); |
| 301 | map.put(new Actions(Actions.SELECT_MAX)); |
| 302 | map.put(new Actions(Actions.START_RESIZE)); |
| 303 | map.put(new Actions(Actions.TOGGLE_FOCUS)); |
| 304 | map.put(new Actions(Actions.FOCUS_OUT_FORWARD)); |
| 305 | map.put(new Actions(Actions.FOCUS_OUT_BACKWARD)); |
| 306 | } |
| 307 | |
| 308 | |
| 309 | |
| 310 | /** |
| 311 | * Installs the UI. |
| 312 | */ |
| 313 | public void installUI(JComponent c) { |
| 314 | splitPane = (JSplitPane) c; |
| 315 | dividerLocationIsSet = false; |
| 316 | dividerKeyboardResize = false; |
| 317 | keepHidden = false; |
| 318 | installDefaults(); |
| 319 | installListeners(); |
| 320 | installKeyboardActions(); |
| 321 | setLastDragLocation(-1); |
| 322 | } |
| 323 | |
| 324 | |
| 325 | /** |
| 326 | * Installs the UI defaults. |
| 327 | */ |
| 328 | protected void installDefaults(){ |
| 329 | LookAndFeel.installBorder(splitPane, "SplitPane.border"); |
| 330 | LookAndFeel.installColors(splitPane, "SplitPane.background", |
| 331 | "SplitPane.foreground"); |
| 332 | LookAndFeel.installProperty(splitPane, "opaque", Boolean.TRUE); |
| 333 | |
| 334 | if (divider == null) divider = createDefaultDivider(); |
| 335 | divider.setBasicSplitPaneUI(this); |
| 336 | |
| 337 | Border b = divider.getBorder(); |
| 338 | |
| 339 | if (b == null || !(b instanceof UIResource)) { |
| 340 | divider.setBorder(UIManager.getBorder("SplitPaneDivider.border")); |
| 341 | } |
| 342 | |
| 343 | dividerDraggingColor = UIManager.getColor("SplitPaneDivider.draggingColor"); |
| 344 | |
| 345 | setOrientation(splitPane.getOrientation()); |
| 346 | |
| 347 | // This plus 2 here is to provide backwards consistancy. Previously, |
| 348 | // the old size did not include the 2 pixel border around the divider, |
| 349 | // it now does. |
| 350 | LookAndFeel.installProperty(splitPane, "dividerSize", |
| 351 | UIManager.get("SplitPane.dividerSize")); |
| 352 | |
| 353 | divider.setDividerSize(splitPane.getDividerSize()); |
| 354 | dividerSize = divider.getDividerSize(); |
| 355 | splitPane.add(divider, JSplitPane.DIVIDER); |
| 356 | |
| 357 | setContinuousLayout(splitPane.isContinuousLayout()); |
| 358 | |
| 359 | resetLayoutManager(); |
| 360 | |
| 361 | /* Install the nonContinuousLayoutDivider here to avoid having to |
| 362 | add/remove everything later. */ |
| 363 | if(nonContinuousLayoutDivider == null) { |
| 364 | setNonContinuousLayoutDivider( |
| 365 | createDefaultNonContinuousLayoutDivider(), |
| 366 | true); |
| 367 | } else { |
| 368 | setNonContinuousLayoutDivider(nonContinuousLayoutDivider, true); |
| 369 | } |
| 370 | |
| 371 | // focus forward traversal key |
| 372 | if (managingFocusForwardTraversalKeys==null) { |
| 373 | managingFocusForwardTraversalKeys = new HashSet(); |
| 374 | managingFocusForwardTraversalKeys.add( |
| 375 | KeyStroke.getKeyStroke(KeyEvent.VK_TAB, 0)); |
| 376 | } |
| 377 | splitPane.setFocusTraversalKeys(KeyboardFocusManager.FORWARD_TRAVERSAL_KEYS, |
| 378 | managingFocusForwardTraversalKeys); |
| 379 | // focus backward traversal key |
| 380 | if (managingFocusBackwardTraversalKeys==null) { |
| 381 | managingFocusBackwardTraversalKeys = new HashSet(); |
| 382 | managingFocusBackwardTraversalKeys.add( |
| 383 | KeyStroke.getKeyStroke(KeyEvent.VK_TAB, InputEvent.SHIFT_MASK)); |
| 384 | } |
| 385 | splitPane.setFocusTraversalKeys(KeyboardFocusManager.BACKWARD_TRAVERSAL_KEYS, |
| 386 | managingFocusBackwardTraversalKeys); |
| 387 | } |
| 388 | |
| 389 | |
| 390 | /** |
| 391 | * Installs the event listeners for the UI. |
| 392 | */ |
| 393 | protected void installListeners() { |
| 394 | if ((propertyChangeListener = createPropertyChangeListener()) != |
| 395 | null) { |
| 396 | splitPane.addPropertyChangeListener(propertyChangeListener); |
| 397 | } |
| 398 | |
| 399 | if ((focusListener = createFocusListener()) != null) { |
| 400 | splitPane.addFocusListener(focusListener); |
| 401 | } |
| 402 | } |
| 403 | |
| 404 | |
| 405 | /** |
| 406 | * Installs the keyboard actions for the UI. |
| 407 | */ |
| 408 | protected void installKeyboardActions() { |
| 409 | InputMap km = getInputMap(JComponent. |
| 410 | WHEN_ANCESTOR_OF_FOCUSED_COMPONENT); |
| 411 | |
| 412 | SwingUtilities.replaceUIInputMap(splitPane, JComponent. |
| 413 | WHEN_ANCESTOR_OF_FOCUSED_COMPONENT, |
| 414 | km); |
| 415 | LazyActionMap.installLazyActionMap(splitPane, BasicSplitPaneUI.class, |
| 416 | "SplitPane.actionMap"); |
| 417 | } |
| 418 | |
| 419 | InputMap getInputMap(int condition) { |
| 420 | if (condition == JComponent.WHEN_ANCESTOR_OF_FOCUSED_COMPONENT) { |
| 421 | return (InputMap)DefaultLookup.get(splitPane, this, |
| 422 | "SplitPane.ancestorInputMap"); |
| 423 | } |
| 424 | return null; |
| 425 | } |
| 426 | |
| 427 | /** |
| 428 | * Uninstalls the UI. |
| 429 | */ |
| 430 | public void uninstallUI(JComponent c) { |
| 431 | uninstallKeyboardActions(); |
| 432 | uninstallListeners(); |
| 433 | uninstallDefaults(); |
| 434 | dividerLocationIsSet = false; |
| 435 | dividerKeyboardResize = false; |
| 436 | splitPane = null; |
| 437 | } |
| 438 | |
| 439 | |
| 440 | /** |
| 441 | * Uninstalls the UI defaults. |
| 442 | */ |
| 443 | protected void uninstallDefaults() { |
| 444 | if(splitPane.getLayout() == layoutManager) { |
| 445 | splitPane.setLayout(null); |
| 446 | } |
| 447 | |
| 448 | if(nonContinuousLayoutDivider != null) { |
| 449 | splitPane.remove(nonContinuousLayoutDivider); |
| 450 | } |
| 451 | |
| 452 | LookAndFeel.uninstallBorder(splitPane); |
| 453 | |
| 454 | Border b = divider.getBorder(); |
| 455 | |
| 456 | if (b instanceof UIResource) { |
| 457 | divider.setBorder(null); |
| 458 | } |
| 459 | |
| 460 | splitPane.remove(divider); |
| 461 | divider.setBasicSplitPaneUI(null); |
| 462 | layoutManager = null; |
| 463 | divider = null; |
| 464 | nonContinuousLayoutDivider = null; |
| 465 | |
| 466 | setNonContinuousLayoutDivider(null); |
| 467 | |
| 468 | // sets the focus forward and backward traversal keys to null |
| 469 | // to restore the defaults |
| 470 | splitPane.setFocusTraversalKeys(KeyboardFocusManager.FORWARD_TRAVERSAL_KEYS, null); |
| 471 | splitPane.setFocusTraversalKeys(KeyboardFocusManager.BACKWARD_TRAVERSAL_KEYS, null); |
| 472 | } |
| 473 | |
| 474 | |
| 475 | /** |
| 476 | * Uninstalls the event listeners for the UI. |
| 477 | */ |
| 478 | protected void uninstallListeners() { |
| 479 | if (propertyChangeListener != null) { |
| 480 | splitPane.removePropertyChangeListener(propertyChangeListener); |
| 481 | propertyChangeListener = null; |
| 482 | } |
| 483 | if (focusListener != null) { |
| 484 | splitPane.removeFocusListener(focusListener); |
| 485 | focusListener = null; |
| 486 | } |
| 487 | |
| 488 | keyboardUpLeftListener = null; |
| 489 | keyboardDownRightListener = null; |
| 490 | keyboardHomeListener = null; |
| 491 | keyboardEndListener = null; |
| 492 | keyboardResizeToggleListener = null; |
| 493 | handler = null; |
| 494 | } |
| 495 | |
| 496 | |
| 497 | /** |
| 498 | * Uninstalls the keyboard actions for the UI. |
| 499 | */ |
| 500 | protected void uninstallKeyboardActions() { |
| 501 | SwingUtilities.replaceUIActionMap(splitPane, null); |
| 502 | SwingUtilities.replaceUIInputMap(splitPane, JComponent. |
| 503 | WHEN_ANCESTOR_OF_FOCUSED_COMPONENT, |
| 504 | null); |
| 505 | } |
| 506 | |
| 507 | |
| 508 | /** |
| 509 | * Creates a PropertyChangeListener for the JSplitPane UI. |
| 510 | */ |
| 511 | protected PropertyChangeListener createPropertyChangeListener() { |
| 512 | return getHandler(); |
| 513 | } |
| 514 | |
| 515 | private Handler getHandler() { |
| 516 | if (handler == null) { |
| 517 | handler = new Handler(); |
| 518 | } |
| 519 | return handler; |
| 520 | } |
| 521 | |
| 522 | |
| 523 | /** |
| 524 | * Creates a FocusListener for the JSplitPane UI. |
| 525 | */ |
| 526 | protected FocusListener createFocusListener() { |
| 527 | return getHandler(); |
| 528 | } |
| 529 | |
| 530 | |
| 531 | /** |
| 532 | * As of Java 2 platform v1.3 this method is no |
| 533 | * longer used. Subclassers previously using this method should |
| 534 | * instead create an Action wrapping the ActionListener, and register |
| 535 | * that Action by overriding <code>installKeyboardActions</code> and |
| 536 | * placing the Action in the SplitPane's ActionMap. Please refer to |
| 537 | * the key bindings specification for further details. |
| 538 | * <p> |
| 539 | * Creates a ActionListener for the JSplitPane UI that listens for |
| 540 | * specific key presses. |
| 541 | * |
| 542 | * @deprecated As of Java 2 platform v1.3. |
| 543 | */ |
| 544 | @Deprecated |
| 545 | protected ActionListener createKeyboardUpLeftListener() { |
| 546 | return new KeyboardUpLeftHandler(); |
| 547 | } |
| 548 | |
| 549 | |
| 550 | /** |
| 551 | * As of Java 2 platform v1.3 this method is no |
| 552 | * longer used. Subclassers previously using this method should |
| 553 | * instead create an Action wrapping the ActionListener, and register |
| 554 | * that Action by overriding <code>installKeyboardActions</code> and |
| 555 | * placing the Action in the SplitPane's ActionMap. Please refer to |
| 556 | * the key bindings specification for further details. |
| 557 | * <p> |
| 558 | * Creates a ActionListener for the JSplitPane UI that listens for |
| 559 | * specific key presses. |
| 560 | * |
| 561 | * @deprecated As of Java 2 platform v1.3. |
| 562 | */ |
| 563 | @Deprecated |
| 564 | protected ActionListener createKeyboardDownRightListener() { |
| 565 | return new KeyboardDownRightHandler(); |
| 566 | } |
| 567 | |
| 568 | |
| 569 | /** |
| 570 | * As of Java 2 platform v1.3 this method is no |
| 571 | * longer used. Subclassers previously using this method should |
| 572 | * instead create an Action wrapping the ActionListener, and register |
| 573 | * that Action by overriding <code>installKeyboardActions</code> and |
| 574 | * placing the Action in the SplitPane's ActionMap. Please refer to |
| 575 | * the key bindings specification for further details. |
| 576 | * <p> |
| 577 | * Creates a ActionListener for the JSplitPane UI that listens for |
| 578 | * specific key presses. |
| 579 | * |
| 580 | * @deprecated As of Java 2 platform v1.3. |
| 581 | */ |
| 582 | @Deprecated |
| 583 | protected ActionListener createKeyboardHomeListener() { |
| 584 | return new KeyboardHomeHandler(); |
| 585 | } |
| 586 | |
| 587 | |
| 588 | /** |
| 589 | * As of Java 2 platform v1.3 this method is no |
| 590 | * longer used. Subclassers previously using this method should |
| 591 | * instead create an Action wrapping the ActionListener, and register |
| 592 | * that Action by overriding <code>installKeyboardActions</code> and |
| 593 | * placing the Action in the SplitPane's ActionMap. Please refer to |
| 594 | * the key bindings specification for further details. |
| 595 | * <p> |
| 596 | * Creates a ActionListener for the JSplitPane UI that listens for |
| 597 | * specific key presses. |
| 598 | * |
| 599 | * @deprecated As of Java 2 platform v1.3. |
| 600 | */ |
| 601 | @Deprecated |
| 602 | protected ActionListener createKeyboardEndListener() { |
| 603 | return new KeyboardEndHandler(); |
| 604 | } |
| 605 | |
| 606 | |
| 607 | /** |
| 608 | * As of Java 2 platform v1.3 this method is no |
| 609 | * longer used. Subclassers previously using this method should |
| 610 | * instead create an Action wrapping the ActionListener, and register |
| 611 | * that Action by overriding <code>installKeyboardActions</code> and |
| 612 | * placing the Action in the SplitPane's ActionMap. Please refer to |
| 613 | * the key bindings specification for further details. |
| 614 | * <p> |
| 615 | * Creates a ActionListener for the JSplitPane UI that listens for |
| 616 | * specific key presses. |
| 617 | * |
| 618 | * @deprecated As of Java 2 platform v1.3. |
| 619 | */ |
| 620 | @Deprecated |
| 621 | protected ActionListener createKeyboardResizeToggleListener() { |
| 622 | return new KeyboardResizeToggleHandler(); |
| 623 | } |
| 624 | |
| 625 | |
| 626 | /** |
| 627 | * Returns the orientation for the JSplitPane. |
| 628 | */ |
| 629 | public int getOrientation() { |
| 630 | return orientation; |
| 631 | } |
| 632 | |
| 633 | |
| 634 | /** |
| 635 | * Set the orientation for the JSplitPane. |
| 636 | */ |
| 637 | public void setOrientation(int orientation) { |
| 638 | this.orientation = orientation; |
| 639 | } |
| 640 | |
| 641 | |
| 642 | /** |
| 643 | * Determines wether the JSplitPane is set to use a continuous layout. |
| 644 | */ |
| 645 | public boolean isContinuousLayout() { |
| 646 | return continuousLayout; |
| 647 | } |
| 648 | |
| 649 | |
| 650 | /** |
| 651 | * Turn continuous layout on/off. |
| 652 | */ |
| 653 | public void setContinuousLayout(boolean b) { |
| 654 | continuousLayout = b; |
| 655 | } |
| 656 | |
| 657 | |
| 658 | /** |
| 659 | * Returns the last drag location of the JSplitPane. |
| 660 | */ |
| 661 | public int getLastDragLocation() { |
| 662 | return lastDragLocation; |
| 663 | } |
| 664 | |
| 665 | |
| 666 | /** |
| 667 | * Set the last drag location of the JSplitPane. |
| 668 | */ |
| 669 | public void setLastDragLocation(int l) { |
| 670 | lastDragLocation = l; |
| 671 | } |
| 672 | |
| 673 | /** |
| 674 | * @return increment via keyboard methods. |
| 675 | */ |
| 676 | int getKeyboardMoveIncrement() { |
| 677 | return KEYBOARD_DIVIDER_MOVE_OFFSET; |
| 678 | } |
| 679 | |
| 680 | /** |
| 681 | * Implementation of the PropertyChangeListener |
| 682 | * that the JSplitPane UI uses. |
| 683 | * <p> |
| 684 | * This class should be treated as a "protected" inner class. |
| 685 | * Instantiate it only within subclasses of BasicSplitPaneUI. |
| 686 | */ |
| 687 | public class PropertyHandler implements PropertyChangeListener |
| 688 | { |
| 689 | // NOTE: This class exists only for backward compatability. All |
| 690 | // its functionality has been moved into Handler. If you need to add |
| 691 | // new functionality add it to the Handler, but make sure this |
| 692 | // class calls into the Handler. |
| 693 | |
| 694 | /** |
| 695 | * Messaged from the <code>JSplitPane</code> the receiver is |
| 696 | * contained in. May potentially reset the layout manager and cause a |
| 697 | * <code>validate</code> to be sent. |
| 698 | */ |
| 699 | public void propertyChange(PropertyChangeEvent e) { |
| 700 | getHandler().propertyChange(e); |
| 701 | } |
| 702 | } |
| 703 | |
| 704 | |
| 705 | /** |
| 706 | * Implementation of the FocusListener that the JSplitPane UI uses. |
| 707 | * <p> |
| 708 | * This class should be treated as a "protected" inner class. |
| 709 | * Instantiate it only within subclasses of BasicSplitPaneUI. |
| 710 | */ |
| 711 | public class FocusHandler extends FocusAdapter |
| 712 | { |
| 713 | // NOTE: This class exists only for backward compatability. All |
| 714 | // its functionality has been moved into Handler. If you need to add |
| 715 | // new functionality add it to the Handler, but make sure this |
| 716 | // class calls into the Handler. |
| 717 | public void focusGained(FocusEvent ev) { |
| 718 | getHandler().focusGained(ev); |
| 719 | } |
| 720 | |
| 721 | public void focusLost(FocusEvent ev) { |
| 722 | getHandler().focusLost(ev); |
| 723 | } |
| 724 | } |
| 725 | |
| 726 | |
| 727 | /** |
| 728 | * Implementation of an ActionListener that the JSplitPane UI uses for |
| 729 | * handling specific key presses. |
| 730 | * <p> |
| 731 | * This class should be treated as a "protected" inner class. |
| 732 | * Instantiate it only within subclasses of BasicSplitPaneUI. |
| 733 | */ |
| 734 | public class KeyboardUpLeftHandler implements ActionListener |
| 735 | { |
| 736 | public void actionPerformed(ActionEvent ev) { |
| 737 | if (dividerKeyboardResize) { |
| 738 | splitPane.setDividerLocation(Math.max(0,getDividerLocation |
| 739 | (splitPane) - getKeyboardMoveIncrement())); |
| 740 | } |
| 741 | } |
| 742 | } |
| 743 | |
| 744 | /** |
| 745 | * Implementation of an ActionListener that the JSplitPane UI uses for |
| 746 | * handling specific key presses. |
| 747 | * <p> |
| 748 | * This class should be treated as a "protected" inner class. |
| 749 | * Instantiate it only within subclasses of BasicSplitPaneUI. |
| 750 | */ |
| 751 | public class KeyboardDownRightHandler implements ActionListener |
| 752 | { |
| 753 | public void actionPerformed(ActionEvent ev) { |
| 754 | if (dividerKeyboardResize) { |
| 755 | splitPane.setDividerLocation(getDividerLocation(splitPane) + |
| 756 | getKeyboardMoveIncrement()); |
| 757 | } |
| 758 | } |
| 759 | } |
| 760 | |
| 761 | |
| 762 | /** |
| 763 | * Implementation of an ActionListener that the JSplitPane UI uses for |
| 764 | * handling specific key presses. |
| 765 | * <p> |
| 766 | * This class should be treated as a "protected" inner class. |
| 767 | * Instantiate it only within subclasses of BasicSplitPaneUI. |
| 768 | */ |
| 769 | public class KeyboardHomeHandler implements ActionListener |
| 770 | { |
| 771 | public void actionPerformed(ActionEvent ev) { |
| 772 | if (dividerKeyboardResize) { |
| 773 | splitPane.setDividerLocation(0); |
| 774 | } |
| 775 | } |
| 776 | } |
| 777 | |
| 778 | |
| 779 | /** |
| 780 | * Implementation of an ActionListener that the JSplitPane UI uses for |
| 781 | * handling specific key presses. |
| 782 | * <p> |
| 783 | * This class should be treated as a "protected" inner class. |
| 784 | * Instantiate it only within subclasses of BasicSplitPaneUI. |
| 785 | */ |
| 786 | public class KeyboardEndHandler implements ActionListener |
| 787 | { |
| 788 | public void actionPerformed(ActionEvent ev) { |
| 789 | if (dividerKeyboardResize) { |
| 790 | Insets insets = splitPane.getInsets(); |
| 791 | int bottomI = (insets != null) ? insets.bottom : 0; |
| 792 | int rightI = (insets != null) ? insets.right : 0; |
| 793 | |
| 794 | if (orientation == JSplitPane.VERTICAL_SPLIT) { |
| 795 | splitPane.setDividerLocation(splitPane.getHeight() - |
| 796 | bottomI); |
| 797 | } |
| 798 | else { |
| 799 | splitPane.setDividerLocation(splitPane.getWidth() - |
| 800 | rightI); |
| 801 | } |
| 802 | } |
| 803 | } |
| 804 | } |
| 805 | |
| 806 | |
| 807 | /** |
| 808 | * Implementation of an ActionListener that the JSplitPane UI uses for |
| 809 | * handling specific key presses. |
| 810 | * <p> |
| 811 | * This class should be treated as a "protected" inner class. |
| 812 | * Instantiate it only within subclasses of BasicSplitPaneUI. |
| 813 | */ |
| 814 | public class KeyboardResizeToggleHandler implements ActionListener |
| 815 | { |
| 816 | public void actionPerformed(ActionEvent ev) { |
| 817 | if (!dividerKeyboardResize) { |
| 818 | splitPane.requestFocus(); |
| 819 | } |
| 820 | } |
| 821 | } |
| 822 | |
| 823 | /** |
| 824 | * Returns the divider between the top Components. |
| 825 | */ |
| 826 | public BasicSplitPaneDivider getDivider() { |
| 827 | return divider; |
| 828 | } |
| 829 | |
| 830 | |
| 831 | /** |
| 832 | * Returns the default non continuous layout divider, which is an |
| 833 | * instanceof Canvas that fills the background in dark gray. |
| 834 | */ |
| 835 | protected Component createDefaultNonContinuousLayoutDivider() { |
| 836 | return new Canvas() { |
| 837 | public void paint(Graphics g) { |
| 838 | if(!isContinuousLayout() && getLastDragLocation() != -1) { |
| 839 | Dimension size = splitPane.getSize(); |
| 840 | |
| 841 | g.setColor(dividerDraggingColor); |
| 842 | if(orientation == JSplitPane.HORIZONTAL_SPLIT) { |
| 843 | g.fillRect(0, 0, dividerSize - 1, size.height - 1); |
| 844 | } else { |
| 845 | g.fillRect(0, 0, size.width - 1, dividerSize - 1); |
| 846 | } |
| 847 | } |
| 848 | } |
| 849 | }; |
| 850 | } |
| 851 | |
| 852 | |
| 853 | /** |
| 854 | * Sets the divider to use when the splitPane is configured to |
| 855 | * not continuously layout. This divider will only be used during a |
| 856 | * dragging session. It is recommended that the passed in component |
| 857 | * be a heavy weight. |
| 858 | */ |
| 859 | protected void setNonContinuousLayoutDivider(Component newDivider) { |
| 860 | setNonContinuousLayoutDivider(newDivider, true); |
| 861 | } |
| 862 | |
| 863 | |
| 864 | /** |
| 865 | * Sets the divider to use. |
| 866 | */ |
| 867 | protected void setNonContinuousLayoutDivider(Component newDivider, |
| 868 | boolean rememberSizes) { |
| 869 | rememberPaneSizes = rememberSizes; |
| 870 | if(nonContinuousLayoutDivider != null && splitPane != null) { |
| 871 | splitPane.remove(nonContinuousLayoutDivider); |
| 872 | } |
| 873 | nonContinuousLayoutDivider = newDivider; |
| 874 | } |
| 875 | |
| 876 | private void addHeavyweightDivider() { |
| 877 | if(nonContinuousLayoutDivider != null && splitPane != null) { |
| 878 | |
| 879 | /* Needs to remove all the components and re-add them! YECK! */ |
| 880 | // This is all done so that the nonContinuousLayoutDivider will |
| 881 | // be drawn on top of the other components, without this, one |
| 882 | // of the heavyweights will draw over the divider! |
| 883 | Component leftC = splitPane.getLeftComponent(); |
| 884 | Component rightC = splitPane.getRightComponent(); |
| 885 | int lastLocation = splitPane. |
| 886 | getDividerLocation(); |
| 887 | |
| 888 | if(leftC != null) |
| 889 | splitPane.setLeftComponent(null); |
| 890 | if(rightC != null) |
| 891 | splitPane.setRightComponent(null); |
| 892 | splitPane.remove(divider); |
| 893 | splitPane.add(nonContinuousLayoutDivider, BasicSplitPaneUI. |
| 894 | NON_CONTINUOUS_DIVIDER, |
| 895 | splitPane.getComponentCount()); |
| 896 | splitPane.setLeftComponent(leftC); |
| 897 | splitPane.setRightComponent(rightC); |
| 898 | splitPane.add(divider, JSplitPane.DIVIDER); |
| 899 | if(rememberPaneSizes) { |
| 900 | splitPane.setDividerLocation(lastLocation); |
| 901 | } |
| 902 | } |
| 903 | |
| 904 | } |
| 905 | |
| 906 | |
| 907 | /** |
| 908 | * Returns the divider to use when the splitPane is configured to |
| 909 | * not continuously layout. This divider will only be used during a |
| 910 | * dragging session. |
| 911 | */ |
| 912 | public Component getNonContinuousLayoutDivider() { |
| 913 | return nonContinuousLayoutDivider; |
| 914 | } |
| 915 | |
| 916 | |
| 917 | /** |
| 918 | * Returns the splitpane this instance is currently contained |
| 919 | * in. |
| 920 | */ |
| 921 | public JSplitPane getSplitPane() { |
| 922 | return splitPane; |
| 923 | } |
| 924 | |
| 925 | |
| 926 | /** |
| 927 | * Creates the default divider. |
| 928 | */ |
| 929 | public BasicSplitPaneDivider createDefaultDivider() { |
| 930 | return new BasicSplitPaneDivider(this); |
| 931 | } |
| 932 | |
| 933 | |
| 934 | /** |
| 935 | * Messaged to reset the preferred sizes. |
| 936 | */ |
| 937 | public void resetToPreferredSizes(JSplitPane jc) { |
| 938 | if(splitPane != null) { |
| 939 | layoutManager.resetToPreferredSizes(); |
| 940 | splitPane.revalidate(); |
| 941 | splitPane.repaint(); |
| 942 | } |
| 943 | } |
| 944 | |
| 945 | |
| 946 | /** |
| 947 | * Sets the location of the divider to location. |
| 948 | */ |
| 949 | public void setDividerLocation(JSplitPane jc, int location) { |
| 950 | if (!ignoreDividerLocationChange) { |
| 951 | dividerLocationIsSet = true; |
| 952 | splitPane.revalidate(); |
| 953 | splitPane.repaint(); |
| 954 | |
| 955 | if (keepHidden) { |
| 956 | Insets insets = splitPane.getInsets(); |
| 957 | int orientation = splitPane.getOrientation(); |
| 958 | if ((orientation == JSplitPane.VERTICAL_SPLIT && |
| 959 | location != insets.top && |
| 960 | location != splitPane.getHeight()-divider.getHeight()-insets.top) || |
| 961 | (orientation == JSplitPane.HORIZONTAL_SPLIT && |
| 962 | location != insets.left && |
| 963 | location != splitPane.getWidth()-divider.getWidth()-insets.left)) { |
| 964 | setKeepHidden(false); |
| 965 | } |
| 966 | } |
| 967 | } |
| 968 | else { |
| 969 | ignoreDividerLocationChange = false; |
| 970 | } |
| 971 | } |
| 972 | |
| 973 | |
| 974 | /** |
| 975 | * Returns the location of the divider, which may differ from what |
| 976 | * the splitpane thinks the location of the divider is. |
| 977 | */ |
| 978 | public int getDividerLocation(JSplitPane jc) { |
| 979 | if(orientation == JSplitPane.HORIZONTAL_SPLIT) |
| 980 | return divider.getLocation().x; |
| 981 | return divider.getLocation().y; |
| 982 | } |
| 983 | |
| 984 | |
| 985 | /** |
| 986 | * Gets the minimum location of the divider. |
| 987 | */ |
| 988 | public int getMinimumDividerLocation(JSplitPane jc) { |
| 989 | int minLoc = 0; |
| 990 | Component leftC = splitPane.getLeftComponent(); |
| 991 | |
| 992 | if ((leftC != null) && (leftC.isVisible())) { |
| 993 | Insets insets = splitPane.getInsets(); |
| 994 | Dimension minSize = leftC.getMinimumSize(); |
| 995 | if(orientation == JSplitPane.HORIZONTAL_SPLIT) { |
| 996 | minLoc = minSize.width; |
| 997 | } else { |
| 998 | minLoc = minSize.height; |
| 999 | } |
| 1000 | if(insets != null) { |
| 1001 | if(orientation == JSplitPane.HORIZONTAL_SPLIT) { |
| 1002 | minLoc += insets.left; |
| 1003 | } else { |
| 1004 | minLoc += insets.top; |
| 1005 | } |
| 1006 | } |
| 1007 | } |
| 1008 | return minLoc; |
| 1009 | } |
| 1010 | |
| 1011 | |
| 1012 | /** |
| 1013 | * Gets the maximum location of the divider. |
| 1014 | */ |
| 1015 | public int getMaximumDividerLocation(JSplitPane jc) { |
| 1016 | Dimension splitPaneSize = splitPane.getSize(); |
| 1017 | int maxLoc = 0; |
| 1018 | Component rightC = splitPane.getRightComponent(); |
| 1019 | |
| 1020 | if (rightC != null) { |
| 1021 | Insets insets = splitPane.getInsets(); |
| 1022 | Dimension minSize = new Dimension(0, 0); |
| 1023 | if (rightC.isVisible()) { |
| 1024 | minSize = rightC.getMinimumSize(); |
| 1025 | } |
| 1026 | if(orientation == JSplitPane.HORIZONTAL_SPLIT) { |
| 1027 | maxLoc = splitPaneSize.width - minSize.width; |
| 1028 | } else { |
| 1029 | maxLoc = splitPaneSize.height - minSize.height; |
| 1030 | } |
| 1031 | maxLoc -= dividerSize; |
| 1032 | if(insets != null) { |
| 1033 | if(orientation == JSplitPane.HORIZONTAL_SPLIT) { |
| 1034 | maxLoc -= insets.right; |
| 1035 | } else { |
| 1036 | maxLoc -= insets.top; |
| 1037 | } |
| 1038 | } |
| 1039 | } |
| 1040 | return Math.max(getMinimumDividerLocation(splitPane), maxLoc); |
| 1041 | } |
| 1042 | |
| 1043 | |
| 1044 | /** |
| 1045 | * Messaged after the JSplitPane the receiver is providing the look |
| 1046 | * and feel for paints its children. |
| 1047 | */ |
| 1048 | public void finishedPaintingChildren(JSplitPane jc, Graphics g) { |
| 1049 | if(jc == splitPane && getLastDragLocation() != -1 && |
| 1050 | !isContinuousLayout() && !draggingHW) { |
| 1051 | Dimension size = splitPane.getSize(); |
| 1052 | |
| 1053 | g.setColor(dividerDraggingColor); |
| 1054 | if(orientation == JSplitPane.HORIZONTAL_SPLIT) { |
| 1055 | g.fillRect(getLastDragLocation(), 0, dividerSize - 1, |
| 1056 | size.height - 1); |
| 1057 | } else { |
| 1058 | g.fillRect(0, lastDragLocation, size.width - 1, |
| 1059 | dividerSize - 1); |
| 1060 | } |
| 1061 | } |
| 1062 | } |
| 1063 | |
| 1064 | |
| 1065 | /** |
| 1066 | * Messaged to paint the look and feel. |
| 1067 | */ |
| 1068 | public void paint(Graphics g, JComponent jc) { |
| 1069 | if (!painted && splitPane.getDividerLocation()<0) { |
| 1070 | ignoreDividerLocationChange = true; |
| 1071 | splitPane.setDividerLocation(getDividerLocation(splitPane)); |
| 1072 | } |
| 1073 | painted = true; |
| 1074 | } |
| 1075 | |
| 1076 | |
| 1077 | /** |
| 1078 | * Returns the preferred size for the passed in component, |
| 1079 | * This is passed off to the current layoutmanager. |
| 1080 | */ |
| 1081 | public Dimension getPreferredSize(JComponent jc) { |
| 1082 | if(splitPane != null) |
| 1083 | return layoutManager.preferredLayoutSize(splitPane); |
| 1084 | return new Dimension(0, 0); |
| 1085 | } |
| 1086 | |
| 1087 | |
| 1088 | /** |
| 1089 | * Returns the minimum size for the passed in component, |
| 1090 | * This is passed off to the current layoutmanager. |
| 1091 | */ |
| 1092 | public Dimension getMinimumSize(JComponent jc) { |
| 1093 | if(splitPane != null) |
| 1094 | return layoutManager.minimumLayoutSize(splitPane); |
| 1095 | return new Dimension(0, 0); |
| 1096 | } |
| 1097 | |
| 1098 | |
| 1099 | /** |
| 1100 | * Returns the maximum size for the passed in component, |
| 1101 | * This is passed off to the current layoutmanager. |
| 1102 | */ |
| 1103 | public Dimension getMaximumSize(JComponent jc) { |
| 1104 | if(splitPane != null) |
| 1105 | return layoutManager.maximumLayoutSize(splitPane); |
| 1106 | return new Dimension(0, 0); |
| 1107 | } |
| 1108 | |
| 1109 | |
| 1110 | /** |
| 1111 | * Returns the insets. The insets are returned from the border insets |
| 1112 | * of the current border. |
| 1113 | */ |
| 1114 | public Insets getInsets(JComponent jc) { |
| 1115 | return null; |
| 1116 | } |
| 1117 | |
| 1118 | |
| 1119 | /** |
| 1120 | * Resets the layout manager based on orientation and messages it |
| 1121 | * with invalidateLayout to pull in appropriate Components. |
| 1122 | */ |
| 1123 | protected void resetLayoutManager() { |
| 1124 | if(orientation == JSplitPane.HORIZONTAL_SPLIT) { |
| 1125 | layoutManager = new BasicHorizontalLayoutManager(0); |
| 1126 | } else { |
| 1127 | layoutManager = new BasicHorizontalLayoutManager(1); |
| 1128 | } |
| 1129 | splitPane.setLayout(layoutManager); |
| 1130 | layoutManager.updateComponents(); |
| 1131 | splitPane.revalidate(); |
| 1132 | splitPane.repaint(); |
| 1133 | } |
| 1134 | |
| 1135 | /** |
| 1136 | * Set the value to indicate if one of the splitpane sides is expanded. |
| 1137 | */ |
| 1138 | void setKeepHidden(boolean keepHidden) { |
| 1139 | this.keepHidden = keepHidden; |
| 1140 | } |
| 1141 | |
| 1142 | /** |
| 1143 | * The value returned indicates if one of the splitpane sides is expanded. |
| 1144 | * @return true if one of the splitpane sides is expanded, false otherwise. |
| 1145 | */ |
| 1146 | private boolean getKeepHidden() { |
| 1147 | return keepHidden; |
| 1148 | } |
| 1149 | |
| 1150 | /** |
| 1151 | * Should be messaged before the dragging session starts, resets |
| 1152 | * lastDragLocation and dividerSize. |
| 1153 | */ |
| 1154 | protected void startDragging() { |
| 1155 | Component leftC = splitPane.getLeftComponent(); |
| 1156 | Component rightC = splitPane.getRightComponent(); |
| 1157 | ComponentPeer cPeer; |
| 1158 | |
| 1159 | beginDragDividerLocation = getDividerLocation(splitPane); |
| 1160 | draggingHW = false; |
| 1161 | if(leftC != null && (cPeer = leftC.getPeer()) != null && |
| 1162 | !(cPeer instanceof LightweightPeer)) { |
| 1163 | draggingHW = true; |
| 1164 | } else if(rightC != null && (cPeer = rightC.getPeer()) != null |
| 1165 | && !(cPeer instanceof LightweightPeer)) { |
| 1166 | draggingHW = true; |
| 1167 | } |
| 1168 | if(orientation == JSplitPane.HORIZONTAL_SPLIT) { |
| 1169 | setLastDragLocation(divider.getBounds().x); |
| 1170 | dividerSize = divider.getSize().width; |
| 1171 | if(!isContinuousLayout() && draggingHW) { |
| 1172 | nonContinuousLayoutDivider.setBounds |
| 1173 | (getLastDragLocation(), 0, dividerSize, |
| 1174 | splitPane.getHeight()); |
| 1175 | addHeavyweightDivider(); |
| 1176 | } |
| 1177 | } else { |
| 1178 | setLastDragLocation(divider.getBounds().y); |
| 1179 | dividerSize = divider.getSize().height; |
| 1180 | if(!isContinuousLayout() && draggingHW) { |
| 1181 | nonContinuousLayoutDivider.setBounds |
| 1182 | (0, getLastDragLocation(), splitPane.getWidth(), |
| 1183 | dividerSize); |
| 1184 | addHeavyweightDivider(); |
| 1185 | } |
| 1186 | } |
| 1187 | } |
| 1188 | |
| 1189 | |
| 1190 | /** |
| 1191 | * Messaged during a dragging session to move the divider to the |
| 1192 | * passed in location. If continuousLayout is true the location is |
| 1193 | * reset and the splitPane validated. |
| 1194 | */ |
| 1195 | protected void dragDividerTo(int location) { |
| 1196 | if(getLastDragLocation() != location) { |
| 1197 | if(isContinuousLayout()) { |
| 1198 | splitPane.setDividerLocation(location); |
| 1199 | setLastDragLocation(location); |
| 1200 | } else { |
| 1201 | int lastLoc = getLastDragLocation(); |
| 1202 | |
| 1203 | setLastDragLocation(location); |
| 1204 | if(orientation == JSplitPane.HORIZONTAL_SPLIT) { |
| 1205 | if(draggingHW) { |
| 1206 | nonContinuousLayoutDivider.setLocation( |
| 1207 | getLastDragLocation(), 0); |
| 1208 | } else { |
| 1209 | int splitHeight = splitPane.getHeight(); |
| 1210 | splitPane.repaint(lastLoc, 0, dividerSize, |
| 1211 | splitHeight); |
| 1212 | splitPane.repaint(location, 0, dividerSize, |
| 1213 | splitHeight); |
| 1214 | } |
| 1215 | } else { |
| 1216 | if(draggingHW) { |
| 1217 | nonContinuousLayoutDivider.setLocation(0, |
| 1218 | getLastDragLocation()); |
| 1219 | } else { |
| 1220 | int splitWidth = splitPane.getWidth(); |
| 1221 | |
| 1222 | splitPane.repaint(0, lastLoc, splitWidth, |
| 1223 | dividerSize); |
| 1224 | splitPane.repaint(0, location, splitWidth, |
| 1225 | dividerSize); |
| 1226 | } |
| 1227 | } |
| 1228 | } |
| 1229 | } |
| 1230 | } |
| 1231 | |
| 1232 | |
| 1233 | /** |
| 1234 | * Messaged to finish the dragging session. If not continuous display |
| 1235 | * the dividers location will be reset. |
| 1236 | */ |
| 1237 | protected void finishDraggingTo(int location) { |
| 1238 | dragDividerTo(location); |
| 1239 | setLastDragLocation(-1); |
| 1240 | if(!isContinuousLayout()) { |
| 1241 | Component leftC = splitPane.getLeftComponent(); |
| 1242 | Rectangle leftBounds = leftC.getBounds(); |
| 1243 | |
| 1244 | if (draggingHW) { |
| 1245 | if(orientation == JSplitPane.HORIZONTAL_SPLIT) { |
| 1246 | nonContinuousLayoutDivider.setLocation(-dividerSize, 0); |
| 1247 | } |
| 1248 | else { |
| 1249 | nonContinuousLayoutDivider.setLocation(0, -dividerSize); |
| 1250 | } |
| 1251 | splitPane.remove(nonContinuousLayoutDivider); |
| 1252 | } |
| 1253 | splitPane.setDividerLocation(location); |
| 1254 | } |
| 1255 | } |
| 1256 | |
| 1257 | |
| 1258 | /** |
| 1259 | * As of Java 2 platform v1.3 this method is no longer used. Instead |
| 1260 | * you should set the border on the divider. |
| 1261 | * <p> |
| 1262 | * Returns the width of one side of the divider border. |
| 1263 | * |
| 1264 | * @deprecated As of Java 2 platform v1.3, instead set the border on the |
| 1265 | * divider. |
| 1266 | */ |
| 1267 | @Deprecated |
| 1268 | protected int getDividerBorderSize() { |
| 1269 | return 1; |
| 1270 | } |
| 1271 | |
| 1272 | |
| 1273 | /** |
| 1274 | * LayoutManager for JSplitPanes that have an orientation of |
| 1275 | * HORIZONTAL_SPLIT. |
| 1276 | */ |
| 1277 | public class BasicHorizontalLayoutManager implements LayoutManager2 |
| 1278 | { |
| 1279 | /* left, right, divider. (in this exact order) */ |
| 1280 | protected int[] sizes; |
| 1281 | protected Component[] components; |
| 1282 | /** Size of the splitpane the last time laid out. */ |
| 1283 | private int lastSplitPaneSize; |
| 1284 | /** True if resetToPreferredSizes has been invoked. */ |
| 1285 | private boolean doReset; |
| 1286 | /** Axis, 0 for horizontal, or 1 for veritcal. */ |
| 1287 | private int axis; |
| 1288 | |
| 1289 | |
| 1290 | BasicHorizontalLayoutManager() { |
| 1291 | this(0); |
| 1292 | } |
| 1293 | |
| 1294 | BasicHorizontalLayoutManager(int axis) { |
| 1295 | this.axis = axis; |
| 1296 | components = new Component[3]; |
| 1297 | components[0] = components[1] = components[2] = null; |
| 1298 | sizes = new int[3]; |
| 1299 | } |
| 1300 | |
| 1301 | // |
| 1302 | // LayoutManager |
| 1303 | // |
| 1304 | |
| 1305 | /** |
| 1306 | * Does the actual layout. |
| 1307 | */ |
| 1308 | public void layoutContainer(Container container) { |
| 1309 | Dimension containerSize = container.getSize(); |
| 1310 | |
| 1311 | // If the splitpane has a zero size then no op out of here. |
| 1312 | // If we execute this function now, we're going to cause ourselves |
| 1313 | // much grief. |
| 1314 | if (containerSize.height <= 0 || containerSize.width <= 0 ) { |
| 1315 | lastSplitPaneSize = 0; |
| 1316 | return; |
| 1317 | } |
| 1318 | |
| 1319 | int spDividerLocation = splitPane.getDividerLocation(); |
| 1320 | Insets insets = splitPane.getInsets(); |
| 1321 | int availableSize = getAvailableSize(containerSize, |
| 1322 | insets); |
| 1323 | int newSize = getSizeForPrimaryAxis(containerSize); |
| 1324 | int beginLocation = getDividerLocation(splitPane); |
| 1325 | int dOffset = getSizeForPrimaryAxis(insets, true); |
| 1326 | Dimension dSize = (components[2] == null) ? null : |
| 1327 | components[2].getPreferredSize(); |
| 1328 | |
| 1329 | if ((doReset && !dividerLocationIsSet) || spDividerLocation < 0) { |
| 1330 | resetToPreferredSizes(availableSize); |
| 1331 | } |
| 1332 | else if (lastSplitPaneSize <= 0 || |
| 1333 | availableSize == lastSplitPaneSize || !painted || |
| 1334 | (dSize != null && |
| 1335 | getSizeForPrimaryAxis(dSize) != sizes[2])) { |
| 1336 | if (dSize != null) { |
| 1337 | sizes[2] = getSizeForPrimaryAxis(dSize); |
| 1338 | } |
| 1339 | else { |
| 1340 | sizes[2] = 0; |
| 1341 | } |
| 1342 | setDividerLocation(spDividerLocation - dOffset, availableSize); |
| 1343 | dividerLocationIsSet = false; |
| 1344 | } |
| 1345 | else if (availableSize != lastSplitPaneSize) { |
| 1346 | distributeSpace(availableSize - lastSplitPaneSize, |
| 1347 | getKeepHidden()); |
| 1348 | } |
| 1349 | doReset = false; |
| 1350 | dividerLocationIsSet = false; |
| 1351 | lastSplitPaneSize = availableSize; |
| 1352 | |
| 1353 | // Reset the bounds of each component |
| 1354 | int nextLocation = getInitialLocation(insets); |
| 1355 | int counter = 0; |
| 1356 | |
| 1357 | while (counter < 3) { |
| 1358 | if (components[counter] != null && |
| 1359 | components[counter].isVisible()) { |
| 1360 | setComponentToSize(components[counter], sizes[counter], |
| 1361 | nextLocation, insets, containerSize); |
| 1362 | nextLocation += sizes[counter]; |
| 1363 | } |
| 1364 | switch (counter) { |
| 1365 | case 0: |
| 1366 | counter = 2; |
| 1367 | break; |
| 1368 | case 2: |
| 1369 | counter = 1; |
| 1370 | break; |
| 1371 | case 1: |
| 1372 | counter = 3; |
| 1373 | break; |
| 1374 | } |
| 1375 | } |
| 1376 | if (painted) { |
| 1377 | // This is tricky, there is never a good time for us |
| 1378 | // to push the value to the splitpane, painted appears to |
| 1379 | // the best time to do it. What is really needed is |
| 1380 | // notification that layout has completed. |
| 1381 | int newLocation = getDividerLocation(splitPane); |
| 1382 | |
| 1383 | if (newLocation != (spDividerLocation - dOffset)) { |
| 1384 | int lastLocation = splitPane.getLastDividerLocation(); |
| 1385 | |
| 1386 | ignoreDividerLocationChange = true; |
| 1387 | try { |
| 1388 | splitPane.setDividerLocation(newLocation); |
| 1389 | // This is not always needed, but is rather tricky |
| 1390 | // to determine when... The case this is needed for |
| 1391 | // is if the user sets the divider location to some |
| 1392 | // bogus value, say 0, and the actual value is 1, the |
| 1393 | // call to setDividerLocation(1) will preserve the |
| 1394 | // old value of 0, when we really want the divider |
| 1395 | // location value before the call. This is needed for |
| 1396 | // the one touch buttons. |
| 1397 | splitPane.setLastDividerLocation(lastLocation); |
| 1398 | } finally { |
| 1399 | ignoreDividerLocationChange = false; |
| 1400 | } |
| 1401 | } |
| 1402 | } |
| 1403 | } |
| 1404 | |
| 1405 | |
| 1406 | /** |
| 1407 | * Adds the component at place. Place must be one of |
| 1408 | * JSplitPane.LEFT, RIGHT, TOP, BOTTOM, or null (for the |
| 1409 | * divider). |
| 1410 | */ |
| 1411 | public void addLayoutComponent(String place, Component component) { |
| 1412 | boolean isValid = true; |
| 1413 | |
| 1414 | if(place != null) { |
| 1415 | if(place.equals(JSplitPane.DIVIDER)) { |
| 1416 | /* Divider. */ |
| 1417 | components[2] = component; |
| 1418 | sizes[2] = getSizeForPrimaryAxis(component. |
| 1419 | getPreferredSize()); |
| 1420 | } else if(place.equals(JSplitPane.LEFT) || |
| 1421 | place.equals(JSplitPane.TOP)) { |
| 1422 | components[0] = component; |
| 1423 | sizes[0] = 0; |
| 1424 | } else if(place.equals(JSplitPane.RIGHT) || |
| 1425 | place.equals(JSplitPane.BOTTOM)) { |
| 1426 | components[1] = component; |
| 1427 | sizes[1] = 0; |
| 1428 | } else if(!place.equals( |
| 1429 | BasicSplitPaneUI.NON_CONTINUOUS_DIVIDER)) |
| 1430 | isValid = false; |
| 1431 | } else { |
| 1432 | isValid = false; |
| 1433 | } |
| 1434 | if(!isValid) |
| 1435 | throw new IllegalArgumentException("cannot add to layout: " + |
| 1436 | "unknown constraint: " + |
| 1437 | place); |
| 1438 | doReset = true; |
| 1439 | } |
| 1440 | |
| 1441 | |
| 1442 | /** |
| 1443 | * Returns the minimum size needed to contain the children. |
| 1444 | * The width is the sum of all the childrens min widths and |
| 1445 | * the height is the largest of the childrens minimum heights. |
| 1446 | */ |
| 1447 | public Dimension minimumLayoutSize(Container container) { |
| 1448 | int minPrimary = 0; |
| 1449 | int minSecondary = 0; |
| 1450 | Insets insets = splitPane.getInsets(); |
| 1451 | |
| 1452 | for (int counter=0; counter<3; counter++) { |
| 1453 | if(components[counter] != null) { |
| 1454 | Dimension minSize = components[counter].getMinimumSize(); |
| 1455 | int secSize = getSizeForSecondaryAxis(minSize); |
| 1456 | |
| 1457 | minPrimary += getSizeForPrimaryAxis(minSize); |
| 1458 | if(secSize > minSecondary) |
| 1459 | minSecondary = secSize; |
| 1460 | } |
| 1461 | } |
| 1462 | if(insets != null) { |
| 1463 | minPrimary += getSizeForPrimaryAxis(insets, true) + |
| 1464 | getSizeForPrimaryAxis(insets, false); |
| 1465 | minSecondary += getSizeForSecondaryAxis(insets, true) + |
| 1466 | getSizeForSecondaryAxis(insets, false); |
| 1467 | } |
| 1468 | if (axis == 0) { |
| 1469 | return new Dimension(minPrimary, minSecondary); |
| 1470 | } |
| 1471 | return new Dimension(minSecondary, minPrimary); |
| 1472 | } |
| 1473 | |
| 1474 | |
| 1475 | /** |
| 1476 | * Returns the preferred size needed to contain the children. |
| 1477 | * The width is the sum of all the childrens preferred widths and |
| 1478 | * the height is the largest of the childrens preferred heights. |
| 1479 | */ |
| 1480 | public Dimension preferredLayoutSize(Container container) { |
| 1481 | int prePrimary = 0; |
| 1482 | int preSecondary = 0; |
| 1483 | Insets insets = splitPane.getInsets(); |
| 1484 | |
| 1485 | for(int counter = 0; counter < 3; counter++) { |
| 1486 | if(components[counter] != null) { |
| 1487 | Dimension preSize = components[counter]. |
| 1488 | getPreferredSize(); |
| 1489 | int secSize = getSizeForSecondaryAxis(preSize); |
| 1490 | |
| 1491 | prePrimary += getSizeForPrimaryAxis(preSize); |
| 1492 | if(secSize > preSecondary) |
| 1493 | preSecondary = secSize; |
| 1494 | } |
| 1495 | } |
| 1496 | if(insets != null) { |
| 1497 | prePrimary += getSizeForPrimaryAxis(insets, true) + |
| 1498 | getSizeForPrimaryAxis(insets, false); |
| 1499 | preSecondary += getSizeForSecondaryAxis(insets, true) + |
| 1500 | getSizeForSecondaryAxis(insets, false); |
| 1501 | } |
| 1502 | if (axis == 0) { |
| 1503 | return new Dimension(prePrimary, preSecondary); |
| 1504 | } |
| 1505 | return new Dimension(preSecondary, prePrimary); |
| 1506 | } |
| 1507 | |
| 1508 | |
| 1509 | /** |
| 1510 | * Removes the specified component from our knowledge. |
| 1511 | */ |
| 1512 | public void removeLayoutComponent(Component component) { |
| 1513 | for(int counter = 0; counter < 3; counter++) { |
| 1514 | if(components[counter] == component) { |
| 1515 | components[counter] = null; |
| 1516 | sizes[counter] = 0; |
| 1517 | doReset = true; |
| 1518 | } |
| 1519 | } |
| 1520 | } |
| 1521 | |
| 1522 | |
| 1523 | // |
| 1524 | // LayoutManager2 |
| 1525 | // |
| 1526 | |
| 1527 | |
| 1528 | /** |
| 1529 | * Adds the specified component to the layout, using the specified |
| 1530 | * constraint object. |
| 1531 | * @param comp the component to be added |
| 1532 | * @param constraints where/how the component is added to the layout. |
| 1533 | */ |
| 1534 | public void addLayoutComponent(Component comp, Object constraints) { |
| 1535 | if ((constraints == null) || (constraints instanceof String)) { |
| 1536 | addLayoutComponent((String)constraints, comp); |
| 1537 | } else { |
| 1538 | throw new IllegalArgumentException("cannot add to layout: " + |
| 1539 | "constraint must be a " + |
| 1540 | "string (or null)"); |
| 1541 | } |
| 1542 | } |
| 1543 | |
| 1544 | |
| 1545 | /** |
| 1546 | * Returns the alignment along the x axis. This specifies how |
| 1547 | * the component would like to be aligned relative to other |
| 1548 | * components. The value should be a number between 0 and 1 |
| 1549 | * where 0 represents alignment along the origin, 1 is aligned |
| 1550 | * the furthest away from the origin, 0.5 is centered, etc. |
| 1551 | */ |
| 1552 | public float getLayoutAlignmentX(Container target) { |
| 1553 | return 0.0f; |
| 1554 | } |
| 1555 | |
| 1556 | |
| 1557 | /** |
| 1558 | * Returns the alignment along the y axis. This specifies how |
| 1559 | * the component would like to be aligned relative to other |
| 1560 | * components. The value should be a number between 0 and 1 |
| 1561 | * where 0 represents alignment along the origin, 1 is aligned |
| 1562 | * the furthest away from the origin, 0.5 is centered, etc. |
| 1563 | */ |
| 1564 | public float getLayoutAlignmentY(Container target) { |
| 1565 | return 0.0f; |
| 1566 | } |
| 1567 | |
| 1568 | |
| 1569 | /** |
| 1570 | * Does nothing. If the developer really wants to change the |
| 1571 | * size of one of the views JSplitPane.resetToPreferredSizes should |
| 1572 | * be messaged. |
| 1573 | */ |
| 1574 | public void invalidateLayout(Container c) { |
| 1575 | } |
| 1576 | |
| 1577 | |
| 1578 | /** |
| 1579 | * Returns the maximum layout size, which is Integer.MAX_VALUE |
| 1580 | * in both directions. |
| 1581 | */ |
| 1582 | public Dimension maximumLayoutSize(Container target) { |
| 1583 | return new Dimension(Integer.MAX_VALUE, Integer.MAX_VALUE); |
| 1584 | } |
| 1585 | |
| 1586 | |
| 1587 | // |
| 1588 | // New methods. |
| 1589 | // |
| 1590 | |
| 1591 | /** |
| 1592 | * Marks the receiver so that the next time this instance is |
| 1593 | * laid out it'll ask for the preferred sizes. |
| 1594 | */ |
| 1595 | public void resetToPreferredSizes() { |
| 1596 | doReset = true; |
| 1597 | } |
| 1598 | |
| 1599 | /** |
| 1600 | * Resets the size of the Component at the passed in location. |
| 1601 | */ |
| 1602 | protected void resetSizeAt(int index) { |
| 1603 | sizes[index] = 0; |
| 1604 | doReset = true; |
| 1605 | } |
| 1606 | |
| 1607 | |
| 1608 | /** |
| 1609 | * Sets the sizes to <code>newSizes</code>. |
| 1610 | */ |
| 1611 | protected void setSizes(int[] newSizes) { |
| 1612 | System.arraycopy(newSizes, 0, sizes, 0, 3); |
| 1613 | } |
| 1614 | |
| 1615 | |
| 1616 | /** |
| 1617 | * Returns the sizes of the components. |
| 1618 | */ |
| 1619 | protected int[] getSizes() { |
| 1620 | int[] retSizes = new int[3]; |
| 1621 | |
| 1622 | System.arraycopy(sizes, 0, retSizes, 0, 3); |
| 1623 | return retSizes; |
| 1624 | } |
| 1625 | |
| 1626 | |
| 1627 | /** |
| 1628 | * Returns the width of the passed in Components preferred size. |
| 1629 | */ |
| 1630 | protected int getPreferredSizeOfComponent(Component c) { |
| 1631 | return getSizeForPrimaryAxis(c.getPreferredSize()); |
| 1632 | } |
| 1633 | |
| 1634 | |
| 1635 | /** |
| 1636 | * Returns the width of the passed in Components minimum size. |
| 1637 | */ |
| 1638 | int getMinimumSizeOfComponent(Component c) { |
| 1639 | return getSizeForPrimaryAxis(c.getMinimumSize()); |
| 1640 | } |
| 1641 | |
| 1642 | |
| 1643 | /** |
| 1644 | * Returns the width of the passed in component. |
| 1645 | */ |
| 1646 | protected int getSizeOfComponent(Component c) { |
| 1647 | return getSizeForPrimaryAxis(c.getSize()); |
| 1648 | } |
| 1649 | |
| 1650 | |
| 1651 | /** |
| 1652 | * Returns the available width based on the container size and |
| 1653 | * Insets. |
| 1654 | */ |
| 1655 | protected int getAvailableSize(Dimension containerSize, |
| 1656 | Insets insets) { |
| 1657 | if(insets == null) |
| 1658 | return getSizeForPrimaryAxis(containerSize); |
| 1659 | return (getSizeForPrimaryAxis(containerSize) - |
| 1660 | (getSizeForPrimaryAxis(insets, true) + |
| 1661 | getSizeForPrimaryAxis(insets, false))); |
| 1662 | } |
| 1663 | |
| 1664 | |
| 1665 | /** |
| 1666 | * Returns the left inset, unless the Insets are null in which case |
| 1667 | * 0 is returned. |
| 1668 | */ |
| 1669 | protected int getInitialLocation(Insets insets) { |
| 1670 | if(insets != null) |
| 1671 | return getSizeForPrimaryAxis(insets, true); |
| 1672 | return 0; |
| 1673 | } |
| 1674 | |
| 1675 | |
| 1676 | /** |
| 1677 | * Sets the width of the component c to be size, placing its |
| 1678 | * x location at location, y to the insets.top and height |
| 1679 | * to the containersize.height less the top and bottom insets. |
| 1680 | */ |
| 1681 | protected void setComponentToSize(Component c, int size, |
| 1682 | int location, Insets insets, |
| 1683 | Dimension containerSize) { |
| 1684 | if(insets != null) { |
| 1685 | if (axis == 0) { |
| 1686 | c.setBounds(location, insets.top, size, |
| 1687 | containerSize.height - |
| 1688 | (insets.top + insets.bottom)); |
| 1689 | } |
| 1690 | else { |
| 1691 | c.setBounds(insets.left, location, containerSize.width - |
| 1692 | (insets.left + insets.right), size); |
| 1693 | } |
| 1694 | } |
| 1695 | else { |
| 1696 | if (axis == 0) { |
| 1697 | c.setBounds(location, 0, size, containerSize.height); |
| 1698 | } |
| 1699 | else { |
| 1700 | c.setBounds(0, location, containerSize.width, size); |
| 1701 | } |
| 1702 | } |
| 1703 | } |
| 1704 | |
| 1705 | /** |
| 1706 | * If the axis == 0, the width is returned, otherwise the height. |
| 1707 | */ |
| 1708 | int getSizeForPrimaryAxis(Dimension size) { |
| 1709 | if (axis == 0) { |
| 1710 | return size.width; |
| 1711 | } |
| 1712 | return size.height; |
| 1713 | } |
| 1714 | |
| 1715 | /** |
| 1716 | * If the axis == 0, the width is returned, otherwise the height. |
| 1717 | */ |
| 1718 | int getSizeForSecondaryAxis(Dimension size) { |
| 1719 | if (axis == 0) { |
| 1720 | return size.height; |
| 1721 | } |
| 1722 | return size.width; |
| 1723 | } |
| 1724 | |
| 1725 | /** |
| 1726 | * Returns a particular value of the inset identified by the |
| 1727 | * axis and <code>isTop</code><p> |
| 1728 | * axis isTop |
| 1729 | * 0 true - left |
| 1730 | * 0 false - right |
| 1731 | * 1 true - top |
| 1732 | * 1 false - bottom |
| 1733 | */ |
| 1734 | int getSizeForPrimaryAxis(Insets insets, boolean isTop) { |
| 1735 | if (axis == 0) { |
| 1736 | if (isTop) { |
| 1737 | return insets.left; |
| 1738 | } |
| 1739 | return insets.right; |
| 1740 | } |
| 1741 | if (isTop) { |
| 1742 | return insets.top; |
| 1743 | } |
| 1744 | return insets.bottom; |
| 1745 | } |
| 1746 | |
| 1747 | /** |
| 1748 | * Returns a particular value of the inset identified by the |
| 1749 | * axis and <code>isTop</code><p> |
| 1750 | * axis isTop |
| 1751 | * 0 true - left |
| 1752 | * 0 false - right |
| 1753 | * 1 true - top |
| 1754 | * 1 false - bottom |
| 1755 | */ |
| 1756 | int getSizeForSecondaryAxis(Insets insets, boolean isTop) { |
| 1757 | if (axis == 0) { |
| 1758 | if (isTop) { |
| 1759 | return insets.top; |
| 1760 | } |
| 1761 | return insets.bottom; |
| 1762 | } |
| 1763 | if (isTop) { |
| 1764 | return insets.left; |
| 1765 | } |
| 1766 | return insets.right; |
| 1767 | } |
| 1768 | |
| 1769 | /** |
| 1770 | * Determines the components. This should be called whenever |
| 1771 | * a new instance of this is installed into an existing |
| 1772 | * SplitPane. |
| 1773 | */ |
| 1774 | protected void updateComponents() { |
| 1775 | Component comp; |
| 1776 | |
| 1777 | comp = splitPane.getLeftComponent(); |
| 1778 | if(components[0] != comp) { |
| 1779 | components[0] = comp; |
| 1780 | if(comp == null) { |
| 1781 | sizes[0] = 0; |
| 1782 | } else { |
| 1783 | sizes[0] = -1; |
| 1784 | } |
| 1785 | } |
| 1786 | |
| 1787 | comp = splitPane.getRightComponent(); |
| 1788 | if(components[1] != comp) { |
| 1789 | components[1] = comp; |
| 1790 | if(comp == null) { |
| 1791 | sizes[1] = 0; |
| 1792 | } else { |
| 1793 | sizes[1] = -1; |
| 1794 | } |
| 1795 | } |
| 1796 | |
| 1797 | /* Find the divider. */ |
| 1798 | Component[] children = splitPane.getComponents(); |
| 1799 | Component oldDivider = components[2]; |
| 1800 | |
| 1801 | components[2] = null; |
| 1802 | for(int counter = children.length - 1; counter >= 0; counter--) { |
| 1803 | if(children[counter] != components[0] && |
| 1804 | children[counter] != components[1] && |
| 1805 | children[counter] != nonContinuousLayoutDivider) { |
| 1806 | if(oldDivider != children[counter]) { |
| 1807 | components[2] = children[counter]; |
| 1808 | } else { |
| 1809 | components[2] = oldDivider; |
| 1810 | } |
| 1811 | break; |
| 1812 | } |
| 1813 | } |
| 1814 | if(components[2] == null) { |
| 1815 | sizes[2] = 0; |
| 1816 | } |
| 1817 | else { |
| 1818 | sizes[2] = getSizeForPrimaryAxis(components[2].getPreferredSize()); |
| 1819 | } |
| 1820 | } |
| 1821 | |
| 1822 | /** |
| 1823 | * Resets the size of the first component to <code>leftSize</code>, |
| 1824 | * and the right component to the remainder of the space. |
| 1825 | */ |
| 1826 | void setDividerLocation(int leftSize, int availableSize) { |
| 1827 | boolean lValid = (components[0] != null && |
| 1828 | components[0].isVisible()); |
| 1829 | boolean rValid = (components[1] != null && |
| 1830 | components[1].isVisible()); |
| 1831 | boolean dValid = (components[2] != null && |
| 1832 | components[2].isVisible()); |
| 1833 | int max = availableSize; |
| 1834 | |
| 1835 | if (dValid) { |
| 1836 | max -= sizes[2]; |
| 1837 | } |
| 1838 | leftSize = Math.max(0, Math.min(leftSize, max)); |
| 1839 | if (lValid) { |
| 1840 | if (rValid) { |
| 1841 | sizes[0] = leftSize; |
| 1842 | sizes[1] = max - leftSize; |
| 1843 | } |
| 1844 | else { |
| 1845 | sizes[0] = max; |
| 1846 | sizes[1] = 0; |
| 1847 | } |
| 1848 | } |
| 1849 | else if (rValid) { |
| 1850 | sizes[1] = max; |
| 1851 | sizes[0] = 0; |
| 1852 | } |
| 1853 | } |
| 1854 | |
| 1855 | /** |
| 1856 | * Returns an array of the minimum sizes of the components. |
| 1857 | */ |
| 1858 | int[] getPreferredSizes() { |
| 1859 | int[] retValue = new int[3]; |
| 1860 | |
| 1861 | for (int counter = 0; counter < 3; counter++) { |
| 1862 | if (components[counter] != null && |
| 1863 | components[counter].isVisible()) { |
| 1864 | retValue[counter] = getPreferredSizeOfComponent |
| 1865 | (components[counter]); |
| 1866 | } |
| 1867 | else { |
| 1868 | retValue[counter] = -1; |
| 1869 | } |
| 1870 | } |
| 1871 | return retValue; |
| 1872 | } |
| 1873 | |
| 1874 | /** |
| 1875 | * Returns an array of the minimum sizes of the components. |
| 1876 | */ |
| 1877 | int[] getMinimumSizes() { |
| 1878 | int[] retValue = new int[3]; |
| 1879 | |
| 1880 | for (int counter = 0; counter < 2; counter++) { |
| 1881 | if (components[counter] != null && |
| 1882 | components[counter].isVisible()) { |
| 1883 | retValue[counter] = getMinimumSizeOfComponent |
| 1884 | (components[counter]); |
| 1885 | } |
| 1886 | else { |
| 1887 | retValue[counter] = -1; |
| 1888 | } |
| 1889 | } |
| 1890 | retValue[2] = (components[2] != null) ? |
| 1891 | getMinimumSizeOfComponent(components[2]) : -1; |
| 1892 | return retValue; |
| 1893 | } |
| 1894 | |
| 1895 | /** |
| 1896 | * Resets the components to their preferred sizes. |
| 1897 | */ |
| 1898 | void resetToPreferredSizes(int availableSize) { |
| 1899 | // Set the sizes to the preferred sizes (if fits), otherwise |
| 1900 | // set to min sizes and distribute any extra space. |
| 1901 | int[] testSizes = getPreferredSizes(); |
| 1902 | int totalSize = 0; |
| 1903 | |
| 1904 | for (int counter = 0; counter < 3; counter++) { |
| 1905 | if (testSizes[counter] != -1) { |
| 1906 | totalSize += testSizes[counter]; |
| 1907 | } |
| 1908 | } |
| 1909 | if (totalSize > availableSize) { |
| 1910 | testSizes = getMinimumSizes(); |
| 1911 | |
| 1912 | totalSize = 0; |
| 1913 | for (int counter = 0; counter < 3; counter++) { |
| 1914 | if (testSizes[counter] != -1) { |
| 1915 | totalSize += testSizes[counter]; |
| 1916 | } |
| 1917 | } |
| 1918 | } |
| 1919 | setSizes(testSizes); |
| 1920 | distributeSpace(availableSize - totalSize, false); |
| 1921 | } |
| 1922 | |
| 1923 | /** |
| 1924 | * Distributes <code>space</code> between the two components |
| 1925 | * (divider won't get any extra space) based on the weighting. This |
| 1926 | * attempts to honor the min size of the components. |
| 1927 | * |
| 1928 | * @param keepHidden if true and one of the components is 0x0 |
| 1929 | * it gets none of the extra space |
| 1930 | */ |
| 1931 | void distributeSpace(int space, boolean keepHidden) { |
| 1932 | boolean lValid = (components[0] != null && |
| 1933 | components[0].isVisible()); |
| 1934 | boolean rValid = (components[1] != null && |
| 1935 | components[1].isVisible()); |
| 1936 | |
| 1937 | if (keepHidden) { |
| 1938 | if (lValid && getSizeForPrimaryAxis( |
| 1939 | components[0].getSize()) == 0) { |
| 1940 | lValid = false; |
| 1941 | if (rValid && getSizeForPrimaryAxis( |
| 1942 | components[1].getSize()) == 0) { |
| 1943 | // Both aren't valid, force them both to be valid |
| 1944 | lValid = true; |
| 1945 | } |
| 1946 | } |
| 1947 | else if (rValid && getSizeForPrimaryAxis( |
| 1948 | components[1].getSize()) == 0) { |
| 1949 | rValid = false; |
| 1950 | } |
| 1951 | } |
| 1952 | if (lValid && rValid) { |
| 1953 | double weight = splitPane.getResizeWeight(); |
| 1954 | int lExtra = (int)(weight * (double)space); |
| 1955 | int rExtra = (space - lExtra); |
| 1956 | |
| 1957 | sizes[0] += lExtra; |
| 1958 | sizes[1] += rExtra; |
| 1959 | |
| 1960 | int lMin = getMinimumSizeOfComponent(components[0]); |
| 1961 | int rMin = getMinimumSizeOfComponent(components[1]); |
| 1962 | boolean lMinValid = (sizes[0] >= lMin); |
| 1963 | boolean rMinValid = (sizes[1] >= rMin); |
| 1964 | |
| 1965 | if (!lMinValid && !rMinValid) { |
| 1966 | if (sizes[0] < 0) { |
| 1967 | sizes[1] += sizes[0]; |
| 1968 | sizes[0] = 0; |
| 1969 | } |
| 1970 | else if (sizes[1] < 0) { |
| 1971 | sizes[0] += sizes[1]; |
| 1972 | sizes[1] = 0; |
| 1973 | } |
| 1974 | } |
| 1975 | else if (!lMinValid) { |
| 1976 | if (sizes[1] - (lMin - sizes[0]) < rMin) { |
| 1977 | // both below min, just make sure > 0 |
| 1978 | if (sizes[0] < 0) { |
| 1979 | sizes[1] += sizes[0]; |
| 1980 | sizes[0] = 0; |
| 1981 | } |
| 1982 | } |
| 1983 | else { |
| 1984 | sizes[1] -= (lMin - sizes[0]); |
| 1985 | sizes[0] = lMin; |
| 1986 | } |
| 1987 | } |
| 1988 | else if (!rMinValid) { |
| 1989 | if (sizes[0] - (rMin - sizes[1]) < lMin) { |
| 1990 | // both below min, just make sure > 0 |
| 1991 | if (sizes[1] < 0) { |
| 1992 | sizes[0] += sizes[1]; |
| 1993 | sizes[1] = 0; |
| 1994 | } |
| 1995 | } |
| 1996 | else { |
| 1997 | sizes[0] -= (rMin - sizes[1]); |
| 1998 | sizes[1] = rMin; |
| 1999 | } |
| 2000 | } |
| 2001 | if (sizes[0] < 0) { |
| 2002 | sizes[0] = 0; |
| 2003 | } |
| 2004 | if (sizes[1] < 0) { |
| 2005 | sizes[1] = 0; |
| 2006 | } |
| 2007 | } |
| 2008 | else if (lValid) { |
| 2009 | sizes[0] = Math.max(0, sizes[0] + space); |
| 2010 | } |
| 2011 | else if (rValid) { |
| 2012 | sizes[1] = Math.max(0, sizes[1] + space); |
| 2013 | } |
| 2014 | } |
| 2015 | } |
| 2016 | |
| 2017 | |
| 2018 | /** |
| 2019 | * LayoutManager used for JSplitPanes with an orientation of |
| 2020 | * VERTICAL_SPLIT. |
| 2021 | * <p> |
| 2022 | */ |
| 2023 | public class BasicVerticalLayoutManager extends |
| 2024 | BasicHorizontalLayoutManager |
| 2025 | { |
| 2026 | public BasicVerticalLayoutManager() { |
| 2027 | super(1); |
| 2028 | } |
| 2029 | } |
| 2030 | |
| 2031 | |
| 2032 | private class Handler implements FocusListener, PropertyChangeListener { |
| 2033 | // |
| 2034 | // PropertyChangeListener |
| 2035 | // |
| 2036 | /** |
| 2037 | * Messaged from the <code>JSplitPane</code> the receiver is |
| 2038 | * contained in. May potentially reset the layout manager and cause a |
| 2039 | * <code>validate</code> to be sent. |
| 2040 | */ |
| 2041 | public void propertyChange(PropertyChangeEvent e) { |
| 2042 | if(e.getSource() == splitPane) { |
| 2043 | String changeName = e.getPropertyName(); |
| 2044 | |
| 2045 | if(changeName == JSplitPane.ORIENTATION_PROPERTY) { |
| 2046 | orientation = splitPane.getOrientation(); |
| 2047 | resetLayoutManager(); |
| 2048 | } else if(changeName == JSplitPane.CONTINUOUS_LAYOUT_PROPERTY){ |
| 2049 | setContinuousLayout(splitPane.isContinuousLayout()); |
| 2050 | if(!isContinuousLayout()) { |
| 2051 | if(nonContinuousLayoutDivider == null) { |
| 2052 | setNonContinuousLayoutDivider( |
| 2053 | createDefaultNonContinuousLayoutDivider(), |
| 2054 | true); |
| 2055 | } else if(nonContinuousLayoutDivider.getParent() == |
| 2056 | null) { |
| 2057 | setNonContinuousLayoutDivider( |
| 2058 | nonContinuousLayoutDivider, |
| 2059 | true); |
| 2060 | } |
| 2061 | } |
| 2062 | } else if(changeName == JSplitPane.DIVIDER_SIZE_PROPERTY){ |
| 2063 | divider.setDividerSize(splitPane.getDividerSize()); |
| 2064 | dividerSize = divider.getDividerSize(); |
| 2065 | splitPane.revalidate(); |
| 2066 | splitPane.repaint(); |
| 2067 | } |
| 2068 | } |
| 2069 | } |
| 2070 | |
| 2071 | // |
| 2072 | // FocusListener |
| 2073 | // |
| 2074 | public void focusGained(FocusEvent ev) { |
| 2075 | dividerKeyboardResize = true; |
| 2076 | splitPane.repaint(); |
| 2077 | } |
| 2078 | |
| 2079 | public void focusLost(FocusEvent ev) { |
| 2080 | dividerKeyboardResize = false; |
| 2081 | splitPane.repaint(); |
| 2082 | } |
| 2083 | } |
| 2084 | |
| 2085 | |
| 2086 | private static class Actions extends UIAction { |
| 2087 | private static final String NEGATIVE_INCREMENT = "negativeIncrement"; |
| 2088 | private static final String POSITIVE_INCREMENT = "positiveIncrement"; |
| 2089 | private static final String SELECT_MIN = "selectMin"; |
| 2090 | private static final String SELECT_MAX = "selectMax"; |
| 2091 | private static final String START_RESIZE = "startResize"; |
| 2092 | private static final String TOGGLE_FOCUS = "toggleFocus"; |
| 2093 | private static final String FOCUS_OUT_FORWARD = "focusOutForward"; |
| 2094 | private static final String FOCUS_OUT_BACKWARD = "focusOutBackward"; |
| 2095 | |
| 2096 | Actions(String key) { |
| 2097 | super(key); |
| 2098 | } |
| 2099 | |
| 2100 | public void actionPerformed(ActionEvent ev) { |
| 2101 | JSplitPane splitPane = (JSplitPane)ev.getSource(); |
| 2102 | BasicSplitPaneUI ui = (BasicSplitPaneUI)BasicLookAndFeel. |
| 2103 | getUIOfType(splitPane.getUI(), BasicSplitPaneUI.class); |
| 2104 | |
| 2105 | if (ui == null) { |
| 2106 | return; |
| 2107 | } |
| 2108 | String key = getName(); |
| 2109 | if (key == NEGATIVE_INCREMENT) { |
| 2110 | if (ui.dividerKeyboardResize) { |
| 2111 | splitPane.setDividerLocation(Math.max( |
| 2112 | 0, ui.getDividerLocation |
| 2113 | (splitPane) - ui.getKeyboardMoveIncrement())); |
| 2114 | } |
| 2115 | } |
| 2116 | else if (key == POSITIVE_INCREMENT) { |
| 2117 | if (ui.dividerKeyboardResize) { |
| 2118 | splitPane.setDividerLocation( |
| 2119 | ui.getDividerLocation(splitPane) + |
| 2120 | ui.getKeyboardMoveIncrement()); |
| 2121 | } |
| 2122 | } |
| 2123 | else if (key == SELECT_MIN) { |
| 2124 | if (ui.dividerKeyboardResize) { |
| 2125 | splitPane.setDividerLocation(0); |
| 2126 | } |
| 2127 | } |
| 2128 | else if (key == SELECT_MAX) { |
| 2129 | if (ui.dividerKeyboardResize) { |
| 2130 | Insets insets = splitPane.getInsets(); |
| 2131 | int bottomI = (insets != null) ? insets.bottom : 0; |
| 2132 | int rightI = (insets != null) ? insets.right : 0; |
| 2133 | |
| 2134 | if (ui.orientation == JSplitPane.VERTICAL_SPLIT) { |
| 2135 | splitPane.setDividerLocation(splitPane.getHeight() - |
| 2136 | bottomI); |
| 2137 | } |
| 2138 | else { |
| 2139 | splitPane.setDividerLocation(splitPane.getWidth() - |
| 2140 | rightI); |
| 2141 | } |
| 2142 | } |
| 2143 | } |
| 2144 | else if (key == START_RESIZE) { |
| 2145 | if (!ui.dividerKeyboardResize) { |
| 2146 | splitPane.requestFocus(); |
| 2147 | } else { |
| 2148 | JSplitPane parentSplitPane = |
| 2149 | (JSplitPane)SwingUtilities.getAncestorOfClass( |
| 2150 | JSplitPane.class, splitPane); |
| 2151 | if (parentSplitPane!=null) { |
| 2152 | parentSplitPane.requestFocus(); |
| 2153 | } |
| 2154 | } |
| 2155 | } |
| 2156 | else if (key == TOGGLE_FOCUS) { |
| 2157 | toggleFocus(splitPane); |
| 2158 | } |
| 2159 | else if (key == FOCUS_OUT_FORWARD) { |
| 2160 | moveFocus(splitPane, 1); |
| 2161 | } |
| 2162 | else if (key == FOCUS_OUT_BACKWARD) { |
| 2163 | moveFocus(splitPane, -1); |
| 2164 | } |
| 2165 | } |
| 2166 | |
| 2167 | private void moveFocus(JSplitPane splitPane, int direction) { |
| 2168 | Container rootAncestor = splitPane.getFocusCycleRootAncestor(); |
| 2169 | FocusTraversalPolicy policy = rootAncestor.getFocusTraversalPolicy(); |
| 2170 | Component focusOn = (direction > 0) ? |
| 2171 | policy.getComponentAfter(rootAncestor, splitPane) : |
| 2172 | policy.getComponentBefore(rootAncestor, splitPane); |
| 2173 | HashSet focusFrom = new HashSet(); |
| 2174 | if (splitPane.isAncestorOf(focusOn)) { |
| 2175 | do { |
| 2176 | focusFrom.add(focusOn); |
| 2177 | rootAncestor = focusOn.getFocusCycleRootAncestor(); |
| 2178 | policy = rootAncestor.getFocusTraversalPolicy(); |
| 2179 | focusOn = (direction > 0) ? |
| 2180 | policy.getComponentAfter(rootAncestor, focusOn) : |
| 2181 | policy.getComponentBefore(rootAncestor, focusOn); |
| 2182 | } while (splitPane.isAncestorOf(focusOn) && |
| 2183 | !focusFrom.contains(focusOn)); |
| 2184 | } |
| 2185 | if ( focusOn!=null && !splitPane.isAncestorOf(focusOn) ) { |
| 2186 | focusOn.requestFocus(); |
| 2187 | } |
| 2188 | } |
| 2189 | |
| 2190 | private void toggleFocus(JSplitPane splitPane) { |
| 2191 | Component left = splitPane.getLeftComponent(); |
| 2192 | Component right = splitPane.getRightComponent(); |
| 2193 | |
| 2194 | KeyboardFocusManager manager = |
| 2195 | KeyboardFocusManager.getCurrentKeyboardFocusManager(); |
| 2196 | Component focus = manager.getFocusOwner(); |
| 2197 | Component focusOn = getNextSide(splitPane, focus); |
| 2198 | if (focusOn != null) { |
| 2199 | // don't change the focus if the new focused component belongs |
| 2200 | // to the same splitpane and the same side |
| 2201 | if ( focus!=null && |
| 2202 | ( (SwingUtilities.isDescendingFrom(focus, left) && |
| 2203 | SwingUtilities.isDescendingFrom(focusOn, left)) || |
| 2204 | (SwingUtilities.isDescendingFrom(focus, right) && |
| 2205 | SwingUtilities.isDescendingFrom(focusOn, right)) ) ) { |
| 2206 | return; |
| 2207 | } |
| 2208 | SwingUtilities2.compositeRequestFocus(focusOn); |
| 2209 | } |
| 2210 | } |
| 2211 | |
| 2212 | private Component getNextSide(JSplitPane splitPane, Component focus) { |
| 2213 | Component left = splitPane.getLeftComponent(); |
| 2214 | Component right = splitPane.getRightComponent(); |
| 2215 | Component next = null; |
| 2216 | if (focus!=null && SwingUtilities.isDescendingFrom(focus, left) && |
| 2217 | right!=null) { |
| 2218 | next = getFirstAvailableComponent(right); |
| 2219 | if (next != null) { |
| 2220 | return next; |
| 2221 | } |
| 2222 | } |
| 2223 | JSplitPane parentSplitPane = (JSplitPane)SwingUtilities.getAncestorOfClass(JSplitPane.class, splitPane); |
| 2224 | if (parentSplitPane!=null) { |
| 2225 | // focus next side of the parent split pane |
| 2226 | next = getNextSide(parentSplitPane, focus); |
| 2227 | } else { |
| 2228 | next = getFirstAvailableComponent(left); |
| 2229 | if (next == null) { |
| 2230 | next = getFirstAvailableComponent(right); |
| 2231 | } |
| 2232 | } |
| 2233 | return next; |
| 2234 | } |
| 2235 | |
| 2236 | private Component getFirstAvailableComponent(Component c) { |
| 2237 | if (c!=null && c instanceof JSplitPane) { |
| 2238 | JSplitPane sp = (JSplitPane)c; |
| 2239 | Component left = getFirstAvailableComponent(sp.getLeftComponent()); |
| 2240 | if (left != null) { |
| 2241 | c = left; |
| 2242 | } else { |
| 2243 | c = getFirstAvailableComponent(sp.getRightComponent()); |
| 2244 | } |
| 2245 | } |
| 2246 | return c; |
| 2247 | } |
| 2248 | } |
| 2249 | } |