1 /* 2 * Copyright 1995-2008 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 java.awt; 27 28 import java.beans.PropertyChangeEvent; 29 import java.util.MissingResourceException; 30 import java.util.Properties; 31 import java.util.ResourceBundle; 32 import java.util.StringTokenizer; 33 import java.awt.event.*; 34 import java.awt.peer.*; 35 import java.awt.im.InputMethodHighlight; 36 import java.awt.image.ImageObserver; 37 import java.awt.image.ImageProducer; 38 import java.awt.image.ColorModel; 39 import java.awt.datatransfer.Clipboard; 40 import java.awt.dnd.DragSource; 41 import java.awt.dnd.DragGestureRecognizer; 42 import java.awt.dnd.DragGestureEvent; 43 import java.awt.dnd.DragGestureListener; 44 import java.awt.dnd.InvalidDnDOperationException; 45 import java.awt.dnd.peer.DragSourceContextPeer; 46 import java.net.URL; 47 import java.io.File; 48 import java.io.FileInputStream; 49 50 import java.util.*; 51 import sun.util.logging.PlatformLogger; 52 53 import java.beans.PropertyChangeListener; 54 import java.beans.PropertyChangeSupport; 55 import sun.awt.AppContext; 56 57 import sun.awt.HeadlessToolkit; 58 import sun.awt.NullComponentPeer; 59 import sun.awt.PeerEvent; 60 import sun.awt.SunToolkit; 61 import sun.security.util.SecurityConstants; 62 63 import sun.util.CoreResourceBundleControl; 64 65 /** 66 * This class is the abstract superclass of all actual 67 * implementations of the Abstract Window Toolkit. Subclasses of 68 * the <code>Toolkit</code> class are used to bind the various components 69 * to particular native toolkit implementations. 70 * <p> 71 * Many GUI events may be delivered to user 72 * asynchronously, if the opposite is not specified explicitly. 73 * As well as 74 * many GUI operations may be performed asynchronously. 75 * This fact means that if the state of a component is set, and then 76 * the state immediately queried, the returned value may not yet 77 * reflect the requested change. This behavior includes, but is not 78 * limited to: 79 * <ul> 80 * <li>Scrolling to a specified position. 81 * <br>For example, calling <code>ScrollPane.setScrollPosition</code> 82 * and then <code>getScrollPosition</code> may return an incorrect 83 * value if the original request has not yet been processed. 84 * <p> 85 * <li>Moving the focus from one component to another. 86 * <br>For more information, see 87 * <a href="http://java.sun.com/docs/books/tutorial/uiswing/misc/focus.html#transferTiming">Timing 88 * Focus Transfers</a>, a section in 89 * <a href="http://java.sun.com/docs/books/tutorial/uiswing/">The Swing 90 * Tutorial</a>. 91 * <p> 92 * <li>Making a top-level container visible. 93 * <br>Calling <code>setVisible(true)</code> on a <code>Window</code>, 94 * <code>Frame</code> or <code>Dialog</code> may occur 95 * asynchronously. 96 * <p> 97 * <li>Setting the size or location of a top-level container. 98 * <br>Calls to <code>setSize</code>, <code>setBounds</code> or 99 * <code>setLocation</code> on a <code>Window</code>, 100 * <code>Frame</code> or <code>Dialog</code> are forwarded 101 * to the underlying window management system and may be 102 * ignored or modified. See {@link java.awt.Window} for 103 * more information. 104 * </ul> 105 * <p> 106 * Most applications should not call any of the methods in this 107 * class directly. The methods defined by <code>Toolkit</code> are 108 * the "glue" that joins the platform-independent classes in the 109 * <code>java.awt</code> package with their counterparts in 110 * <code>java.awt.peer</code>. Some methods defined by 111 * <code>Toolkit</code> query the native operating system directly. 112 * 113 * @author Sami Shaio 114 * @author Arthur van Hoff 115 * @author Fred Ecks 116 * @since JDK1.0 117 */ 118 public abstract class Toolkit { 119 120 /** 121 * Creates this toolkit's implementation of the <code>Desktop</code> 122 * using the specified peer interface. 123 * @param target the desktop to be implemented 124 * @return this toolkit's implementation of the <code>Desktop</code> 125 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 126 * returns true 127 * @see java.awt.GraphicsEnvironment#isHeadless 128 * @see java.awt.Desktop 129 * @see java.awt.peer.DesktopPeer 130 * @since 1.6 131 */ 132 protected abstract DesktopPeer createDesktopPeer(Desktop target) 133 throws HeadlessException; 134 135 136 /** 137 * Creates this toolkit's implementation of <code>Button</code> using 138 * the specified peer interface. 139 * @param target the button to be implemented. 140 * @return this toolkit's implementation of <code>Button</code>. 141 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 142 * returns true 143 * @see java.awt.GraphicsEnvironment#isHeadless 144 * @see java.awt.Button 145 * @see java.awt.peer.ButtonPeer 146 */ 147 protected abstract ButtonPeer createButton(Button target) 148 throws HeadlessException; 149 150 /** 151 * Creates this toolkit's implementation of <code>TextField</code> using 152 * the specified peer interface. 153 * @param target the text field to be implemented. 154 * @return this toolkit's implementation of <code>TextField</code>. 155 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 156 * returns true 157 * @see java.awt.GraphicsEnvironment#isHeadless 158 * @see java.awt.TextField 159 * @see java.awt.peer.TextFieldPeer 160 */ 161 protected abstract TextFieldPeer createTextField(TextField target) 162 throws HeadlessException; 163 164 /** 165 * Creates this toolkit's implementation of <code>Label</code> using 166 * the specified peer interface. 167 * @param target the label to be implemented. 168 * @return this toolkit's implementation of <code>Label</code>. 169 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 170 * returns true 171 * @see java.awt.GraphicsEnvironment#isHeadless 172 * @see java.awt.Label 173 * @see java.awt.peer.LabelPeer 174 */ 175 protected abstract LabelPeer createLabel(Label target) 176 throws HeadlessException; 177 178 /** 179 * Creates this toolkit's implementation of <code>List</code> using 180 * the specified peer interface. 181 * @param target the list to be implemented. 182 * @return this toolkit's implementation of <code>List</code>. 183 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 184 * returns true 185 * @see java.awt.GraphicsEnvironment#isHeadless 186 * @see java.awt.List 187 * @see java.awt.peer.ListPeer 188 */ 189 protected abstract ListPeer createList(java.awt.List target) 190 throws HeadlessException; 191 192 /** 193 * Creates this toolkit's implementation of <code>Checkbox</code> using 194 * the specified peer interface. 195 * @param target the check box to be implemented. 196 * @return this toolkit's implementation of <code>Checkbox</code>. 197 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 198 * returns true 199 * @see java.awt.GraphicsEnvironment#isHeadless 200 * @see java.awt.Checkbox 201 * @see java.awt.peer.CheckboxPeer 202 */ 203 protected abstract CheckboxPeer createCheckbox(Checkbox target) 204 throws HeadlessException; 205 206 /** 207 * Creates this toolkit's implementation of <code>Scrollbar</code> using 208 * the specified peer interface. 209 * @param target the scroll bar to be implemented. 210 * @return this toolkit's implementation of <code>Scrollbar</code>. 211 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 212 * returns true 213 * @see java.awt.GraphicsEnvironment#isHeadless 214 * @see java.awt.Scrollbar 215 * @see java.awt.peer.ScrollbarPeer 216 */ 217 protected abstract ScrollbarPeer createScrollbar(Scrollbar target) 218 throws HeadlessException; 219 220 /** 221 * Creates this toolkit's implementation of <code>ScrollPane</code> using 222 * the specified peer interface. 223 * @param target the scroll pane to be implemented. 224 * @return this toolkit's implementation of <code>ScrollPane</code>. 225 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 226 * returns true 227 * @see java.awt.GraphicsEnvironment#isHeadless 228 * @see java.awt.ScrollPane 229 * @see java.awt.peer.ScrollPanePeer 230 * @since JDK1.1 231 */ 232 protected abstract ScrollPanePeer createScrollPane(ScrollPane target) 233 throws HeadlessException; 234 235 /** 236 * Creates this toolkit's implementation of <code>TextArea</code> using 237 * the specified peer interface. 238 * @param target the text area to be implemented. 239 * @return this toolkit's implementation of <code>TextArea</code>. 240 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 241 * returns true 242 * @see java.awt.GraphicsEnvironment#isHeadless 243 * @see java.awt.TextArea 244 * @see java.awt.peer.TextAreaPeer 245 */ 246 protected abstract TextAreaPeer createTextArea(TextArea target) 247 throws HeadlessException; 248 249 /** 250 * Creates this toolkit's implementation of <code>Choice</code> using 251 * the specified peer interface. 252 * @param target the choice to be implemented. 253 * @return this toolkit's implementation of <code>Choice</code>. 254 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 255 * returns true 256 * @see java.awt.GraphicsEnvironment#isHeadless 257 * @see java.awt.Choice 258 * @see java.awt.peer.ChoicePeer 259 */ 260 protected abstract ChoicePeer createChoice(Choice target) 261 throws HeadlessException; 262 263 /** 264 * Creates this toolkit's implementation of <code>Frame</code> using 265 * the specified peer interface. 266 * @param target the frame to be implemented. 267 * @return this toolkit's implementation of <code>Frame</code>. 268 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 269 * returns true 270 * @see java.awt.GraphicsEnvironment#isHeadless 271 * @see java.awt.Frame 272 * @see java.awt.peer.FramePeer 273 */ 274 protected abstract FramePeer createFrame(Frame target) 275 throws HeadlessException; 276 277 /** 278 * Creates this toolkit's implementation of <code>Canvas</code> using 279 * the specified peer interface. 280 * @param target the canvas to be implemented. 281 * @return this toolkit's implementation of <code>Canvas</code>. 282 * @see java.awt.Canvas 283 * @see java.awt.peer.CanvasPeer 284 */ 285 protected abstract CanvasPeer createCanvas(Canvas target); 286 287 /** 288 * Creates this toolkit's implementation of <code>Panel</code> using 289 * the specified peer interface. 290 * @param target the panel to be implemented. 291 * @return this toolkit's implementation of <code>Panel</code>. 292 * @see java.awt.Panel 293 * @see java.awt.peer.PanelPeer 294 */ 295 protected abstract PanelPeer createPanel(Panel target); 296 297 /** 298 * Creates this toolkit's implementation of <code>Window</code> using 299 * the specified peer interface. 300 * @param target the window to be implemented. 301 * @return this toolkit's implementation of <code>Window</code>. 302 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 303 * returns true 304 * @see java.awt.GraphicsEnvironment#isHeadless 305 * @see java.awt.Window 306 * @see java.awt.peer.WindowPeer 307 */ 308 protected abstract WindowPeer createWindow(Window target) 309 throws HeadlessException; 310 311 /** 312 * Creates this toolkit's implementation of <code>Dialog</code> using 313 * the specified peer interface. 314 * @param target the dialog to be implemented. 315 * @return this toolkit's implementation of <code>Dialog</code>. 316 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 317 * returns true 318 * @see java.awt.GraphicsEnvironment#isHeadless 319 * @see java.awt.Dialog 320 * @see java.awt.peer.DialogPeer 321 */ 322 protected abstract DialogPeer createDialog(Dialog target) 323 throws HeadlessException; 324 325 /** 326 * Creates this toolkit's implementation of <code>MenuBar</code> using 327 * the specified peer interface. 328 * @param target the menu bar to be implemented. 329 * @return this toolkit's implementation of <code>MenuBar</code>. 330 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 331 * returns true 332 * @see java.awt.GraphicsEnvironment#isHeadless 333 * @see java.awt.MenuBar 334 * @see java.awt.peer.MenuBarPeer 335 */ 336 protected abstract MenuBarPeer createMenuBar(MenuBar target) 337 throws HeadlessException; 338 339 /** 340 * Creates this toolkit's implementation of <code>Menu</code> using 341 * the specified peer interface. 342 * @param target the menu to be implemented. 343 * @return this toolkit's implementation of <code>Menu</code>. 344 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 345 * returns true 346 * @see java.awt.GraphicsEnvironment#isHeadless 347 * @see java.awt.Menu 348 * @see java.awt.peer.MenuPeer 349 */ 350 protected abstract MenuPeer createMenu(Menu target) 351 throws HeadlessException; 352 353 /** 354 * Creates this toolkit's implementation of <code>PopupMenu</code> using 355 * the specified peer interface. 356 * @param target the popup menu to be implemented. 357 * @return this toolkit's implementation of <code>PopupMenu</code>. 358 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 359 * returns true 360 * @see java.awt.GraphicsEnvironment#isHeadless 361 * @see java.awt.PopupMenu 362 * @see java.awt.peer.PopupMenuPeer 363 * @since JDK1.1 364 */ 365 protected abstract PopupMenuPeer createPopupMenu(PopupMenu target) 366 throws HeadlessException; 367 368 /** 369 * Creates this toolkit's implementation of <code>MenuItem</code> using 370 * the specified peer interface. 371 * @param target the menu item to be implemented. 372 * @return this toolkit's implementation of <code>MenuItem</code>. 373 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 374 * returns true 375 * @see java.awt.GraphicsEnvironment#isHeadless 376 * @see java.awt.MenuItem 377 * @see java.awt.peer.MenuItemPeer 378 */ 379 protected abstract MenuItemPeer createMenuItem(MenuItem target) 380 throws HeadlessException; 381 382 /** 383 * Creates this toolkit's implementation of <code>FileDialog</code> using 384 * the specified peer interface. 385 * @param target the file dialog to be implemented. 386 * @return this toolkit's implementation of <code>FileDialog</code>. 387 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 388 * returns true 389 * @see java.awt.GraphicsEnvironment#isHeadless 390 * @see java.awt.FileDialog 391 * @see java.awt.peer.FileDialogPeer 392 */ 393 protected abstract FileDialogPeer createFileDialog(FileDialog target) 394 throws HeadlessException; 395 396 /** 397 * Creates this toolkit's implementation of <code>CheckboxMenuItem</code> using 398 * the specified peer interface. 399 * @param target the checkbox menu item to be implemented. 400 * @return this toolkit's implementation of <code>CheckboxMenuItem</code>. 401 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 402 * returns true 403 * @see java.awt.GraphicsEnvironment#isHeadless 404 * @see java.awt.CheckboxMenuItem 405 * @see java.awt.peer.CheckboxMenuItemPeer 406 */ 407 protected abstract CheckboxMenuItemPeer createCheckboxMenuItem( 408 CheckboxMenuItem target) throws HeadlessException; 409 410 /** 411 * Obtains this toolkit's implementation of helper class for 412 * <code>MouseInfo</code> operations. 413 * @return this toolkit's implementation of helper for <code>MouseInfo</code> 414 * @throws UnsupportedOperationException if this operation is not implemented 415 * @see java.awt.peer.MouseInfoPeer 416 * @see java.awt.MouseInfo 417 * @since 1.5 418 */ 419 protected MouseInfoPeer getMouseInfoPeer() { 420 throw new UnsupportedOperationException("Not implemented"); 421 } 422 423 private static LightweightPeer lightweightMarker; 424 425 /** 426 * Creates a peer for a component or container. This peer is windowless 427 * and allows the Component and Container classes to be extended directly 428 * to create windowless components that are defined entirely in java. 429 * 430 * @param target The Component to be created. 431 */ 432 protected LightweightPeer createComponent(Component target) { 433 if (lightweightMarker == null) { 434 lightweightMarker = new NullComponentPeer(); 435 } 436 return lightweightMarker; 437 } 438 439 /** 440 * Creates this toolkit's implementation of <code>Font</code> using 441 * the specified peer interface. 442 * @param name the font to be implemented 443 * @param style the style of the font, such as <code>PLAIN</code>, 444 * <code>BOLD</code>, <code>ITALIC</code>, or a combination 445 * @return this toolkit's implementation of <code>Font</code> 446 * @see java.awt.Font 447 * @see java.awt.peer.FontPeer 448 * @see java.awt.GraphicsEnvironment#getAllFonts 449 * @deprecated see java.awt.GraphicsEnvironment#getAllFonts 450 */ 451 @Deprecated 452 protected abstract FontPeer getFontPeer(String name, int style); 453 454 // The following method is called by the private method 455 // <code>updateSystemColors</code> in <code>SystemColor</code>. 456 457 /** 458 * Fills in the integer array that is supplied as an argument 459 * with the current system color values. 460 * 461 * @param systemColors an integer array. 462 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 463 * returns true 464 * @see java.awt.GraphicsEnvironment#isHeadless 465 * @since JDK1.1 466 */ 467 protected void loadSystemColors(int[] systemColors) 468 throws HeadlessException { 469 } 470 471 /** 472 * Controls whether the layout of Containers is validated dynamically 473 * during resizing, or statically, after resizing is complete. 474 * Use {@code isDynamicLayoutActive()} to detect if this feature enabled 475 * in this program and is supported by this operating system 476 * and/or window manager. 477 * Note that this feature is supported not on all platforms, and 478 * conversely, that this feature cannot be turned off on some platforms. 479 * On these platforms where dynamic layout during resizing is not supported 480 * (or is always supported), setting this property has no effect. 481 * Note that this feature can be set or unset as a property of the 482 * operating system or window manager on some platforms. On such 483 * platforms, the dynamic resize property must be set at the operating 484 * system or window manager level before this method can take effect. 485 * This method does not change support or settings of the underlying 486 * operating system or 487 * window manager. The OS/WM support can be 488 * queried using getDesktopProperty("awt.dynamicLayoutSupported") method. 489 * 490 * @param dynamic If true, Containers should re-layout their 491 * components as the Container is being resized. If false, 492 * the layout will be validated after resizing is completed. 493 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 494 * returns true 495 * @see #isDynamicLayoutSet() 496 * @see #isDynamicLayoutActive() 497 * @see #getDesktopProperty(String propertyName) 498 * @see java.awt.GraphicsEnvironment#isHeadless 499 * @since 1.4 500 */ 501 public void setDynamicLayout(boolean dynamic) 502 throws HeadlessException { 503 } 504 505 /** 506 * Returns whether the layout of Containers is validated dynamically 507 * during resizing, or statically, after resizing is complete. 508 * Note: this method returns the value that was set programmatically; 509 * it does not reflect support at the level of the operating system 510 * or window manager for dynamic layout on resizing, or the current 511 * operating system or window manager settings. The OS/WM support can 512 * be queried using getDesktopProperty("awt.dynamicLayoutSupported"). 513 * 514 * @return true if validation of Containers is done dynamically, 515 * false if validation is done after resizing is finished. 516 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 517 * returns true 518 * @see #setDynamicLayout(boolean dynamic) 519 * @see #isDynamicLayoutActive() 520 * @see #getDesktopProperty(String propertyName) 521 * @see java.awt.GraphicsEnvironment#isHeadless 522 * @since 1.4 523 */ 524 protected boolean isDynamicLayoutSet() 525 throws HeadlessException { 526 if (this != Toolkit.getDefaultToolkit()) { 527 return Toolkit.getDefaultToolkit().isDynamicLayoutSet(); 528 } else { 529 return false; 530 } 531 } 532 533 /** 534 * Returns whether dynamic layout of Containers on resize is 535 * currently active (both set in program 536 *( {@code isDynamicLayoutSet()} ) 537 *, and supported 538 * by the underlying operating system and/or window manager). 539 * If dynamic layout is currently inactive then Containers 540 * re-layout their components when resizing is completed. As a result 541 * the {@code Component.validate()} method will be invoked only 542 * once per resize. 543 * If dynamic layout is currently active then Containers 544 * re-layout their components on every native resize event and 545 * the {@code validate()} method will be invoked each time. 546 * The OS/WM support can be queried using 547 * the getDesktopProperty("awt.dynamicLayoutSupported") method. 548 * 549 * @return true if dynamic layout of Containers on resize is 550 * currently active, false otherwise. 551 * @exception HeadlessException if the GraphicsEnvironment.isHeadless() 552 * method returns true 553 * @see #setDynamicLayout(boolean dynamic) 554 * @see #isDynamicLayoutSet() 555 * @see #getDesktopProperty(String propertyName) 556 * @see java.awt.GraphicsEnvironment#isHeadless 557 * @since 1.4 558 */ 559 public boolean isDynamicLayoutActive() 560 throws HeadlessException { 561 if (this != Toolkit.getDefaultToolkit()) { 562 return Toolkit.getDefaultToolkit().isDynamicLayoutActive(); 563 } else { 564 return false; 565 } 566 } 567 568 /** 569 * Gets the size of the screen. On systems with multiple displays, the 570 * primary display is used. Multi-screen aware display dimensions are 571 * available from <code>GraphicsConfiguration</code> and 572 * <code>GraphicsDevice</code>. 573 * @return the size of this toolkit's screen, in pixels. 574 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 575 * returns true 576 * @see java.awt.GraphicsConfiguration#getBounds 577 * @see java.awt.GraphicsDevice#getDisplayMode 578 * @see java.awt.GraphicsEnvironment#isHeadless 579 */ 580 public abstract Dimension getScreenSize() 581 throws HeadlessException; 582 583 /** 584 * Returns the screen resolution in dots-per-inch. 585 * @return this toolkit's screen resolution, in dots-per-inch. 586 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 587 * returns true 588 * @see java.awt.GraphicsEnvironment#isHeadless 589 */ 590 public abstract int getScreenResolution() 591 throws HeadlessException; 592 593 /** 594 * Gets the insets of the screen. 595 * @param gc a <code>GraphicsConfiguration</code> 596 * @return the insets of this toolkit's screen, in pixels. 597 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 598 * returns true 599 * @see java.awt.GraphicsEnvironment#isHeadless 600 * @since 1.4 601 */ 602 public Insets getScreenInsets(GraphicsConfiguration gc) 603 throws HeadlessException { 604 if (this != Toolkit.getDefaultToolkit()) { 605 return Toolkit.getDefaultToolkit().getScreenInsets(gc); 606 } else { 607 return new Insets(0, 0, 0, 0); 608 } 609 } 610 611 /** 612 * Determines the color model of this toolkit's screen. 613 * <p> 614 * <code>ColorModel</code> is an abstract class that 615 * encapsulates the ability to translate between the 616 * pixel values of an image and its red, green, blue, 617 * and alpha components. 618 * <p> 619 * This toolkit method is called by the 620 * <code>getColorModel</code> method 621 * of the <code>Component</code> class. 622 * @return the color model of this toolkit's screen. 623 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 624 * returns true 625 * @see java.awt.GraphicsEnvironment#isHeadless 626 * @see java.awt.image.ColorModel 627 * @see java.awt.Component#getColorModel 628 */ 629 public abstract ColorModel getColorModel() 630 throws HeadlessException; 631 632 /** 633 * Returns the names of the available fonts in this toolkit.<p> 634 * For 1.1, the following font names are deprecated (the replacement 635 * name follows): 636 * <ul> 637 * <li>TimesRoman (use Serif) 638 * <li>Helvetica (use SansSerif) 639 * <li>Courier (use Monospaced) 640 * </ul><p> 641 * The ZapfDingbats fontname is also deprecated in 1.1 but the characters 642 * are defined in Unicode starting at 0x2700, and as of 1.1 Java supports 643 * those characters. 644 * @return the names of the available fonts in this toolkit. 645 * @deprecated see {@link java.awt.GraphicsEnvironment#getAvailableFontFamilyNames()} 646 * @see java.awt.GraphicsEnvironment#getAvailableFontFamilyNames() 647 */ 648 @Deprecated 649 public abstract String[] getFontList(); 650 651 /** 652 * Gets the screen device metrics for rendering of the font. 653 * @param font a font 654 * @return the screen metrics of the specified font in this toolkit 655 * @deprecated As of JDK version 1.2, replaced by the <code>Font</code> 656 * method <code>getLineMetrics</code>. 657 * @see java.awt.font.LineMetrics 658 * @see java.awt.Font#getLineMetrics 659 * @see java.awt.GraphicsEnvironment#getScreenDevices 660 */ 661 @Deprecated 662 public abstract FontMetrics getFontMetrics(Font font); 663 664 /** 665 * Synchronizes this toolkit's graphics state. Some window systems 666 * may do buffering of graphics events. 667 * <p> 668 * This method ensures that the display is up-to-date. It is useful 669 * for animation. 670 */ 671 public abstract void sync(); 672 673 /** 674 * The default toolkit. 675 */ 676 private static Toolkit toolkit; 677 678 /** 679 * Used internally by the assistive technologies functions; set at 680 * init time and used at load time 681 */ 682 private static String atNames; 683 684 /** 685 * Initializes properties related to assistive technologies. 686 * These properties are used both in the loadAssistiveProperties() 687 * function below, as well as other classes in the jdk that depend 688 * on the properties (such as the use of the screen_magnifier_present 689 * property in Java2D hardware acceleration initialization). The 690 * initialization of the properties must be done before the platform- 691 * specific Toolkit class is instantiated so that all necessary 692 * properties are set up properly before any classes dependent upon them 693 * are initialized. 694 */ 695 private static void initAssistiveTechnologies() { 696 697 // Get accessibility properties 698 final String sep = File.separator; 699 final Properties properties = new Properties(); 700 701 702 atNames = (String)java.security.AccessController.doPrivileged( 703 new java.security.PrivilegedAction() { 704 public Object run() { 705 706 // Try loading the per-user accessibility properties file. 707 try { 708 File propsFile = new File( 709 System.getProperty("user.home") + 710 sep + ".accessibility.properties"); 711 FileInputStream in = 712 new FileInputStream(propsFile); 713 714 // Inputstream has been buffered in Properties class 715 properties.load(in); 716 in.close(); 717 } catch (Exception e) { 718 // Per-user accessibility properties file does not exist 719 } 720 721 // Try loading the system-wide accessibility properties 722 // file only if a per-user accessibility properties 723 // file does not exist or is empty. 724 if (properties.size() == 0) { 725 try { 726 File propsFile = new File( 727 System.getProperty("java.home") + sep + "lib" + 728 sep + "accessibility.properties"); 729 FileInputStream in = 730 new FileInputStream(propsFile); 731 732 // Inputstream has been buffered in Properties class 733 properties.load(in); 734 in.close(); 735 } catch (Exception e) { 736 // System-wide accessibility properties file does 737 // not exist; 738 } 739 } 740 741 // Get whether a screen magnifier is present. First check 742 // the system property and then check the properties file. 743 String magPresent = System.getProperty("javax.accessibility.screen_magnifier_present"); 744 if (magPresent == null) { 745 magPresent = properties.getProperty("screen_magnifier_present", null); 746 if (magPresent != null) { 747 System.setProperty("javax.accessibility.screen_magnifier_present", magPresent); 748 } 749 } 750 751 // Get the names of any assistive technolgies to load. First 752 // check the system property and then check the properties 753 // file. 754 String classNames = System.getProperty("javax.accessibility.assistive_technologies"); 755 if (classNames == null) { 756 classNames = properties.getProperty("assistive_technologies", null); 757 if (classNames != null) { 758 System.setProperty("javax.accessibility.assistive_technologies", classNames); 759 } 760 } 761 return classNames; 762 } 763 }); 764 } 765 766 /** 767 * Loads additional classes into the VM, using the property 768 * 'assistive_technologies' specified in the Sun reference 769 * implementation by a line in the 'accessibility.properties' 770 * file. The form is "assistive_technologies=..." where 771 * the "..." is a comma-separated list of assistive technology 772 * classes to load. Each class is loaded in the order given 773 * and a single instance of each is created using 774 * Class.forName(class).newInstance(). All errors are handled 775 * via an AWTError exception. 776 * 777 * <p>The assumption is made that assistive technology classes are supplied 778 * as part of INSTALLED (as opposed to: BUNDLED) extensions or specified 779 * on the class path 780 * (and therefore can be loaded using the class loader returned by 781 * a call to <code>ClassLoader.getSystemClassLoader</code>, whose 782 * delegation parent is the extension class loader for installed 783 * extensions). 784 */ 785 private static void loadAssistiveTechnologies() { 786 // Load any assistive technologies 787 if (atNames != null) { 788 ClassLoader cl = ClassLoader.getSystemClassLoader(); 789 StringTokenizer parser = new StringTokenizer(atNames," ,"); 790 String atName; 791 while (parser.hasMoreTokens()) { 792 atName = parser.nextToken(); 793 try { 794 Class clazz; 795 if (cl != null) { 796 clazz = cl.loadClass(atName); 797 } else { 798 clazz = Class.forName(atName); 799 } 800 clazz.newInstance(); 801 } catch (ClassNotFoundException e) { 802 throw new AWTError("Assistive Technology not found: " 803 + atName); 804 } catch (InstantiationException e) { 805 throw new AWTError("Could not instantiate Assistive" 806 + " Technology: " + atName); 807 } catch (IllegalAccessException e) { 808 throw new AWTError("Could not access Assistive" 809 + " Technology: " + atName); 810 } catch (Exception e) { 811 throw new AWTError("Error trying to install Assistive" 812 + " Technology: " + atName + " " + e); 813 } 814 } 815 } 816 } 817 818 /** 819 * Gets the default toolkit. 820 * <p> 821 * If a system property named <code>"java.awt.headless"</code> is set 822 * to <code>true</code> then the headless implementation 823 * of <code>Toolkit</code> is used. 824 * <p> 825 * If there is no <code>"java.awt.headless"</code> or it is set to 826 * <code>false</code> and there is a system property named 827 * <code>"awt.toolkit"</code>, 828 * that property is treated as the name of a class that is a subclass 829 * of <code>Toolkit</code>; 830 * otherwise the default platform-specific implementation of 831 * <code>Toolkit</code> is used. 832 * <p> 833 * Also loads additional classes into the VM, using the property 834 * 'assistive_technologies' specified in the Sun reference 835 * implementation by a line in the 'accessibility.properties' 836 * file. The form is "assistive_technologies=..." where 837 * the "..." is a comma-separated list of assistive technology 838 * classes to load. Each class is loaded in the order given 839 * and a single instance of each is created using 840 * Class.forName(class).newInstance(). This is done just after 841 * the AWT toolkit is created. All errors are handled via an 842 * AWTError exception. 843 * @return the default toolkit. 844 * @exception AWTError if a toolkit could not be found, or 845 * if one could not be accessed or instantiated. 846 */ 847 public static synchronized Toolkit getDefaultToolkit() { 848 if (toolkit == null) { 849 try { 850 // We disable the JIT during toolkit initialization. This 851 // tends to touch lots of classes that aren't needed again 852 // later and therefore JITing is counter-productiive. 853 java.lang.Compiler.disable(); 854 855 java.security.AccessController.doPrivileged( 856 new java.security.PrivilegedAction() { 857 public Object run() { 858 String nm = null; 859 Class cls = null; 860 try { 861 nm = System.getProperty("awt.toolkit", "sun.awt.X11.XToolkit"); 862 try { 863 cls = Class.forName(nm); 864 } catch (ClassNotFoundException e) { 865 ClassLoader cl = ClassLoader.getSystemClassLoader(); 866 if (cl != null) { 867 try { 868 cls = cl.loadClass(nm); 869 } catch (ClassNotFoundException ee) { 870 throw new AWTError("Toolkit not found: " + nm); 871 } 872 } 873 } 874 if (cls != null) { 875 toolkit = (Toolkit)cls.newInstance(); 876 if (GraphicsEnvironment.isHeadless()) { 877 toolkit = new HeadlessToolkit(toolkit); 878 } 879 } 880 } catch (InstantiationException e) { 881 throw new AWTError("Could not instantiate Toolkit: " + nm); 882 } catch (IllegalAccessException e) { 883 throw new AWTError("Could not access Toolkit: " + nm); 884 } 885 return null; 886 } 887 }); 888 loadAssistiveTechnologies(); 889 } finally { 890 // Make sure to always re-enable the JIT. 891 java.lang.Compiler.enable(); 892 } 893 } 894 return toolkit; 895 } 896 897 /** 898 * Returns an image which gets pixel data from the specified file, 899 * whose format can be either GIF, JPEG or PNG. 900 * The underlying toolkit attempts to resolve multiple requests 901 * with the same filename to the same returned Image. 902 * <p> 903 * Since the mechanism required to facilitate this sharing of 904 * <code>Image</code> objects may continue to hold onto images 905 * that are no longer in use for an indefinite period of time, 906 * developers are encouraged to implement their own caching of 907 * images by using the {@link #createImage(java.lang.String) createImage} 908 * variant wherever available. 909 * If the image data contained in the specified file changes, 910 * the <code>Image</code> object returned from this method may 911 * still contain stale information which was loaded from the 912 * file after a prior call. 913 * Previously loaded image data can be manually discarded by 914 * calling the {@link Image#flush flush} method on the 915 * returned <code>Image</code>. 916 * <p> 917 * This method first checks if there is a security manager installed. 918 * If so, the method calls the security manager's 919 * <code>checkRead</code> method with the file specified to ensure 920 * that the access to the image is allowed. 921 * @param filename the name of a file containing pixel data 922 * in a recognized file format. 923 * @return an image which gets its pixel data from 924 * the specified file. 925 * @throws SecurityException if a security manager exists and its 926 * checkRead method doesn't allow the operation. 927 * @see #createImage(java.lang.String) 928 */ 929 public abstract Image getImage(String filename); 930 931 /** 932 * Returns an image which gets pixel data from the specified URL. 933 * The pixel data referenced by the specified URL must be in one 934 * of the following formats: GIF, JPEG or PNG. 935 * The underlying toolkit attempts to resolve multiple requests 936 * with the same URL to the same returned Image. 937 * <p> 938 * Since the mechanism required to facilitate this sharing of 939 * <code>Image</code> objects may continue to hold onto images 940 * that are no longer in use for an indefinite period of time, 941 * developers are encouraged to implement their own caching of 942 * images by using the {@link #createImage(java.net.URL) createImage} 943 * variant wherever available. 944 * If the image data stored at the specified URL changes, 945 * the <code>Image</code> object returned from this method may 946 * still contain stale information which was fetched from the 947 * URL after a prior call. 948 * Previously loaded image data can be manually discarded by 949 * calling the {@link Image#flush flush} method on the 950 * returned <code>Image</code>. 951 * <p> 952 * This method first checks if there is a security manager installed. 953 * If so, the method calls the security manager's 954 * <code>checkPermission</code> method with the 955 * url.openConnection().getPermission() permission to ensure 956 * that the access to the image is allowed. For compatibility 957 * with pre-1.2 security managers, if the access is denied with 958 * <code>FilePermission</code> or <code>SocketPermission</code>, 959 * the method throws the <code>SecurityException</code> 960 * if the corresponding 1.1-style SecurityManager.checkXXX method 961 * also denies permission. 962 * @param url the URL to use in fetching the pixel data. 963 * @return an image which gets its pixel data from 964 * the specified URL. 965 * @throws SecurityException if a security manager exists and its 966 * checkPermission method doesn't allow 967 * the operation. 968 * @see #createImage(java.net.URL) 969 */ 970 public abstract Image getImage(URL url); 971 972 /** 973 * Returns an image which gets pixel data from the specified file. 974 * The returned Image is a new object which will not be shared 975 * with any other caller of this method or its getImage variant. 976 * <p> 977 * This method first checks if there is a security manager installed. 978 * If so, the method calls the security manager's 979 * <code>checkRead</code> method with the specified file to ensure 980 * that the image creation is allowed. 981 * @param filename the name of a file containing pixel data 982 * in a recognized file format. 983 * @return an image which gets its pixel data from 984 * the specified file. 985 * @throws SecurityException if a security manager exists and its 986 * checkRead method doesn't allow the operation. 987 * @see #getImage(java.lang.String) 988 */ 989 public abstract Image createImage(String filename); 990 991 /** 992 * Returns an image which gets pixel data from the specified URL. 993 * The returned Image is a new object which will not be shared 994 * with any other caller of this method or its getImage variant. 995 * <p> 996 * This method first checks if there is a security manager installed. 997 * If so, the method calls the security manager's 998 * <code>checkPermission</code> method with the 999 * url.openConnection().getPermission() permission to ensure 1000 * that the image creation is allowed. For compatibility 1001 * with pre-1.2 security managers, if the access is denied with 1002 * <code>FilePermission</code> or <code>SocketPermission</code>, 1003 * the method throws <code>SecurityException</code> 1004 * if the corresponding 1.1-style SecurityManager.checkXXX method 1005 * also denies permission. 1006 * @param url the URL to use in fetching the pixel data. 1007 * @return an image which gets its pixel data from 1008 * the specified URL. 1009 * @throws SecurityException if a security manager exists and its 1010 * checkPermission method doesn't allow 1011 * the operation. 1012 * @see #getImage(java.net.URL) 1013 */ 1014 public abstract Image createImage(URL url); 1015 1016 /** 1017 * Prepares an image for rendering. 1018 * <p> 1019 * If the values of the width and height arguments are both 1020 * <code>-1</code>, this method prepares the image for rendering 1021 * on the default screen; otherwise, this method prepares an image 1022 * for rendering on the default screen at the specified width and height. 1023 * <p> 1024 * The image data is downloaded asynchronously in another thread, 1025 * and an appropriately scaled screen representation of the image is 1026 * generated. 1027 * <p> 1028 * This method is called by components <code>prepareImage</code> 1029 * methods. 1030 * <p> 1031 * Information on the flags returned by this method can be found 1032 * with the definition of the <code>ImageObserver</code> interface. 1033 1034 * @param image the image for which to prepare a 1035 * screen representation. 1036 * @param width the width of the desired screen 1037 * representation, or <code>-1</code>. 1038 * @param height the height of the desired screen 1039 * representation, or <code>-1</code>. 1040 * @param observer the <code>ImageObserver</code> 1041 * object to be notified as the 1042 * image is being prepared. 1043 * @return <code>true</code> if the image has already been 1044 * fully prepared; <code>false</code> otherwise. 1045 * @see java.awt.Component#prepareImage(java.awt.Image, 1046 * java.awt.image.ImageObserver) 1047 * @see java.awt.Component#prepareImage(java.awt.Image, 1048 * int, int, java.awt.image.ImageObserver) 1049 * @see java.awt.image.ImageObserver 1050 */ 1051 public abstract boolean prepareImage(Image image, int width, int height, 1052 ImageObserver observer); 1053 1054 /** 1055 * Indicates the construction status of a specified image that is 1056 * being prepared for display. 1057 * <p> 1058 * If the values of the width and height arguments are both 1059 * <code>-1</code>, this method returns the construction status of 1060 * a screen representation of the specified image in this toolkit. 1061 * Otherwise, this method returns the construction status of a 1062 * scaled representation of the image at the specified width 1063 * and height. 1064 * <p> 1065 * This method does not cause the image to begin loading. 1066 * An application must call <code>prepareImage</code> to force 1067 * the loading of an image. 1068 * <p> 1069 * This method is called by the component's <code>checkImage</code> 1070 * methods. 1071 * <p> 1072 * Information on the flags returned by this method can be found 1073 * with the definition of the <code>ImageObserver</code> interface. 1074 * @param image the image whose status is being checked. 1075 * @param width the width of the scaled version whose status is 1076 * being checked, or <code>-1</code>. 1077 * @param height the height of the scaled version whose status 1078 * is being checked, or <code>-1</code>. 1079 * @param observer the <code>ImageObserver</code> object to be 1080 * notified as the image is being prepared. 1081 * @return the bitwise inclusive <strong>OR</strong> of the 1082 * <code>ImageObserver</code> flags for the 1083 * image data that is currently available. 1084 * @see java.awt.Toolkit#prepareImage(java.awt.Image, 1085 * int, int, java.awt.image.ImageObserver) 1086 * @see java.awt.Component#checkImage(java.awt.Image, 1087 * java.awt.image.ImageObserver) 1088 * @see java.awt.Component#checkImage(java.awt.Image, 1089 * int, int, java.awt.image.ImageObserver) 1090 * @see java.awt.image.ImageObserver 1091 */ 1092 public abstract int checkImage(Image image, int width, int height, 1093 ImageObserver observer); 1094 1095 /** 1096 * Creates an image with the specified image producer. 1097 * @param producer the image producer to be used. 1098 * @return an image with the specified image producer. 1099 * @see java.awt.Image 1100 * @see java.awt.image.ImageProducer 1101 * @see java.awt.Component#createImage(java.awt.image.ImageProducer) 1102 */ 1103 public abstract Image createImage(ImageProducer producer); 1104 1105 /** 1106 * Creates an image which decodes the image stored in the specified 1107 * byte array. 1108 * <p> 1109 * The data must be in some image format, such as GIF or JPEG, 1110 * that is supported by this toolkit. 1111 * @param imagedata an array of bytes, representing 1112 * image data in a supported image format. 1113 * @return an image. 1114 * @since JDK1.1 1115 */ 1116 public Image createImage(byte[] imagedata) { 1117 return createImage(imagedata, 0, imagedata.length); 1118 } 1119 1120 /** 1121 * Creates an image which decodes the image stored in the specified 1122 * byte array, and at the specified offset and length. 1123 * The data must be in some image format, such as GIF or JPEG, 1124 * that is supported by this toolkit. 1125 * @param imagedata an array of bytes, representing 1126 * image data in a supported image format. 1127 * @param imageoffset the offset of the beginning 1128 * of the data in the array. 1129 * @param imagelength the length of the data in the array. 1130 * @return an image. 1131 * @since JDK1.1 1132 */ 1133 public abstract Image createImage(byte[] imagedata, 1134 int imageoffset, 1135 int imagelength); 1136 1137 /** 1138 * Gets a <code>PrintJob</code> object which is the result of initiating 1139 * a print operation on the toolkit's platform. 1140 * <p> 1141 * Each actual implementation of this method should first check if there 1142 * is a security manager installed. If there is, the method should call 1143 * the security manager's <code>checkPrintJobAccess</code> method to 1144 * ensure initiation of a print operation is allowed. If the default 1145 * implementation of <code>checkPrintJobAccess</code> is used (that is, 1146 * that method is not overriden), then this results in a call to the 1147 * security manager's <code>checkPermission</code> method with a <code> 1148 * RuntimePermission("queuePrintJob")</code> permission. 1149 * 1150 * @param frame the parent of the print dialog. May not be null. 1151 * @param jobtitle the title of the PrintJob. A null title is equivalent 1152 * to "". 1153 * @param props a Properties object containing zero or more properties. 1154 * Properties are not standardized and are not consistent across 1155 * implementations. Because of this, PrintJobs which require job 1156 * and page control should use the version of this function which 1157 * takes JobAttributes and PageAttributes objects. This object 1158 * may be updated to reflect the user's job choices on exit. May 1159 * be null. 1160 * 1161 * @return a <code>PrintJob</code> object, or <code>null</code> if the 1162 * user cancelled the print job. 1163 * @throws NullPointerException if frame is null. This exception is 1164 * always thrown when GraphicsEnvironment.isHeadless() returns 1165 * true. 1166 * @throws SecurityException if this thread is not allowed to initiate a 1167 * print job request 1168 * @see java.awt.GraphicsEnvironment#isHeadless 1169 * @see java.awt.PrintJob 1170 * @see java.lang.RuntimePermission 1171 * @since JDK1.1 1172 */ 1173 public abstract PrintJob getPrintJob(Frame frame, String jobtitle, 1174 Properties props); 1175 1176 /** 1177 * Gets a <code>PrintJob</code> object which is the result of initiating 1178 * a print operation on the toolkit's platform. 1179 * <p> 1180 * Each actual implementation of this method should first check if there 1181 * is a security manager installed. If there is, the method should call 1182 * the security manager's <code>checkPrintJobAccess</code> method to 1183 * ensure initiation of a print operation is allowed. If the default 1184 * implementation of <code>checkPrintJobAccess</code> is used (that is, 1185 * that method is not overriden), then this results in a call to the 1186 * security manager's <code>checkPermission</code> method with a <code> 1187 * RuntimePermission("queuePrintJob")</code> permission. 1188 * 1189 * @param frame the parent of the print dialog. May be null if and only 1190 * if jobAttributes is not null and jobAttributes.getDialog() 1191 * returns JobAttributes.DialogType.NONE or 1192 * JobAttributes.DialogType.COMMON. 1193 * @param jobtitle the title of the PrintJob. A null title is equivalent 1194 * to "". 1195 * @param jobAttributes a set of job attributes which will control the 1196 * PrintJob. The attributes will be updated to reflect the user's 1197 * choices as outlined in the JobAttributes documentation. May be 1198 * null. 1199 * @param pageAttributes a set of page attributes which will control the 1200 * PrintJob. The attributes will be applied to every page in the 1201 * job. The attributes will be updated to reflect the user's 1202 * choices as outlined in the PageAttributes documentation. May be 1203 * null. 1204 * 1205 * @return a <code>PrintJob</code> object, or <code>null</code> if the 1206 * user cancelled the print job. 1207 * @throws NullPointerException if frame is null and either jobAttributes 1208 * is null or jobAttributes.getDialog() returns 1209 * JobAttributes.DialogType.NATIVE. 1210 * @throws IllegalArgumentException if pageAttributes specifies differing 1211 * cross feed and feed resolutions. Also if this thread has 1212 * access to the file system and jobAttributes specifies 1213 * print to file, and the specified destination file exists but 1214 * is a directory rather than a regular file, does not exist but 1215 * cannot be created, or cannot be opened for any other reason. 1216 * However in the case of print to file, if a dialog is also 1217 * requested to be displayed then the user will be given an 1218 * opportunity to select a file and proceed with printing. 1219 * The dialog will ensure that the selected output file 1220 * is valid before returning from this method. 1221 * <p> 1222 * This exception is always thrown when GraphicsEnvironment.isHeadless() 1223 * returns true. 1224 * @throws SecurityException if this thread is not allowed to initiate a 1225 * print job request, or if jobAttributes specifies print to file, 1226 * and this thread is not allowed to access the file system 1227 * @see java.awt.PrintJob 1228 * @see java.awt.GraphicsEnvironment#isHeadless 1229 * @see java.lang.RuntimePermission 1230 * @see java.awt.JobAttributes 1231 * @see java.awt.PageAttributes 1232 * @since 1.3 1233 */ 1234 public PrintJob getPrintJob(Frame frame, String jobtitle, 1235 JobAttributes jobAttributes, 1236 PageAttributes pageAttributes) { 1237 // Override to add printing support with new job/page control classes 1238 1239 if (GraphicsEnvironment.isHeadless()) { 1240 throw new IllegalArgumentException(); 1241 } 1242 1243 if (this != Toolkit.getDefaultToolkit()) { 1244 return Toolkit.getDefaultToolkit().getPrintJob(frame, jobtitle, 1245 jobAttributes, 1246 pageAttributes); 1247 } else { 1248 return getPrintJob(frame, jobtitle, null); 1249 } 1250 } 1251 1252 /** 1253 * Emits an audio beep. 1254 * @since JDK1.1 1255 */ 1256 public abstract void beep(); 1257 1258 /** 1259 * Gets the singleton instance of the system Clipboard which interfaces 1260 * with clipboard facilities provided by the native platform. This 1261 * clipboard enables data transfer between Java programs and native 1262 * applications which use native clipboard facilities. 1263 * <p> 1264 * In addition to any and all formats specified in the flavormap.properties 1265 * file, or other file specified by the <code>AWT.DnD.flavorMapFileURL 1266 * </code> Toolkit property, text returned by the system Clipboard's <code> 1267 * getTransferData()</code> method is available in the following flavors: 1268 * <ul> 1269 * <li>DataFlavor.stringFlavor</li> 1270 * <li>DataFlavor.plainTextFlavor (<b>deprecated</b>)</li> 1271 * </ul> 1272 * As with <code>java.awt.datatransfer.StringSelection</code>, if the 1273 * requested flavor is <code>DataFlavor.plainTextFlavor</code>, or an 1274 * equivalent flavor, a Reader is returned. <b>Note:</b> The behavior of 1275 * the system Clipboard's <code>getTransferData()</code> method for <code> 1276 * DataFlavor.plainTextFlavor</code>, and equivalent DataFlavors, is 1277 * inconsistent with the definition of <code>DataFlavor.plainTextFlavor 1278 * </code>. Because of this, support for <code> 1279 * DataFlavor.plainTextFlavor</code>, and equivalent flavors, is 1280 * <b>deprecated</b>. 1281 * <p> 1282 * Each actual implementation of this method should first check if there 1283 * is a security manager installed. If there is, the method should call 1284 * the security manager's <code>checkSystemClipboardAccess</code> method 1285 * to ensure it's ok to to access the system clipboard. If the default 1286 * implementation of <code>checkSystemClipboardAccess</code> is used (that 1287 * is, that method is not overriden), then this results in a call to the 1288 * security manager's <code>checkPermission</code> method with an <code> 1289 * AWTPermission("accessClipboard")</code> permission. 1290 * 1291 * @return the system Clipboard 1292 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 1293 * returns true 1294 * @see java.awt.GraphicsEnvironment#isHeadless 1295 * @see java.awt.datatransfer.Clipboard 1296 * @see java.awt.datatransfer.StringSelection 1297 * @see java.awt.datatransfer.DataFlavor#stringFlavor 1298 * @see java.awt.datatransfer.DataFlavor#plainTextFlavor 1299 * @see java.io.Reader 1300 * @see java.awt.AWTPermission 1301 * @since JDK1.1 1302 */ 1303 public abstract Clipboard getSystemClipboard() 1304 throws HeadlessException; 1305 1306 /** 1307 * Gets the singleton instance of the system selection as a 1308 * <code>Clipboard</code> object. This allows an application to read and 1309 * modify the current, system-wide selection. 1310 * <p> 1311 * An application is responsible for updating the system selection whenever 1312 * the user selects text, using either the mouse or the keyboard. 1313 * Typically, this is implemented by installing a 1314 * <code>FocusListener</code> on all <code>Component</code>s which support 1315 * text selection, and, between <code>FOCUS_GAINED</code> and 1316 * <code>FOCUS_LOST</code> events delivered to that <code>Component</code>, 1317 * updating the system selection <code>Clipboard</code> when the selection 1318 * changes inside the <code>Component</code>. Properly updating the system 1319 * selection ensures that a Java application will interact correctly with 1320 * native applications and other Java applications running simultaneously 1321 * on the system. Note that <code>java.awt.TextComponent</code> and 1322 * <code>javax.swing.text.JTextComponent</code> already adhere to this 1323 * policy. When using these classes, and their subclasses, developers need 1324 * not write any additional code. 1325 * <p> 1326 * Some platforms do not support a system selection <code>Clipboard</code>. 1327 * On those platforms, this method will return <code>null</code>. In such a 1328 * case, an application is absolved from its responsibility to update the 1329 * system selection <code>Clipboard</code> as described above. 1330 * <p> 1331 * Each actual implementation of this method should first check if there 1332 * is a <code>SecurityManager</code> installed. If there is, the method 1333 * should call the <code>SecurityManager</code>'s 1334 * <code>checkSystemClipboardAccess</code> method to ensure that client 1335 * code has access the system selection. If the default implementation of 1336 * <code>checkSystemClipboardAccess</code> is used (that is, if the method 1337 * is not overridden), then this results in a call to the 1338 * <code>SecurityManager</code>'s <code>checkPermission</code> method with 1339 * an <code>AWTPermission("accessClipboard")</code> permission. 1340 * 1341 * @return the system selection as a <code>Clipboard</code>, or 1342 * <code>null</code> if the native platform does not support a 1343 * system selection <code>Clipboard</code> 1344 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 1345 * returns true 1346 * 1347 * @see java.awt.datatransfer.Clipboard 1348 * @see java.awt.event.FocusListener 1349 * @see java.awt.event.FocusEvent#FOCUS_GAINED 1350 * @see java.awt.event.FocusEvent#FOCUS_LOST 1351 * @see TextComponent 1352 * @see javax.swing.text.JTextComponent 1353 * @see AWTPermission 1354 * @see GraphicsEnvironment#isHeadless 1355 * @since 1.4 1356 */ 1357 public Clipboard getSystemSelection() throws HeadlessException { 1358 if (this != Toolkit.getDefaultToolkit()) { 1359 return Toolkit.getDefaultToolkit().getSystemSelection(); 1360 } else { 1361 GraphicsEnvironment.checkHeadless(); 1362 return null; 1363 } 1364 } 1365 1366 /** 1367 * Determines which modifier key is the appropriate accelerator 1368 * key for menu shortcuts. 1369 * <p> 1370 * Menu shortcuts, which are embodied in the 1371 * <code>MenuShortcut</code> class, are handled by the 1372 * <code>MenuBar</code> class. 1373 * <p> 1374 * By default, this method returns <code>Event.CTRL_MASK</code>. 1375 * Toolkit implementations should override this method if the 1376 * <b>Control</b> key isn't the correct key for accelerators. 1377 * @return the modifier mask on the <code>Event</code> class 1378 * that is used for menu shortcuts on this toolkit. 1379 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 1380 * returns true 1381 * @see java.awt.GraphicsEnvironment#isHeadless 1382 * @see java.awt.MenuBar 1383 * @see java.awt.MenuShortcut 1384 * @since JDK1.1 1385 */ 1386 public int getMenuShortcutKeyMask() throws HeadlessException { 1387 return Event.CTRL_MASK; 1388 } 1389 1390 /** 1391 * Returns whether the given locking key on the keyboard is currently in 1392 * its "on" state. 1393 * Valid key codes are 1394 * {@link java.awt.event.KeyEvent#VK_CAPS_LOCK VK_CAPS_LOCK}, 1395 * {@link java.awt.event.KeyEvent#VK_NUM_LOCK VK_NUM_LOCK}, 1396 * {@link java.awt.event.KeyEvent#VK_SCROLL_LOCK VK_SCROLL_LOCK}, and 1397 * {@link java.awt.event.KeyEvent#VK_KANA_LOCK VK_KANA_LOCK}. 1398 * 1399 * @exception java.lang.IllegalArgumentException if <code>keyCode</code> 1400 * is not one of the valid key codes 1401 * @exception java.lang.UnsupportedOperationException if the host system doesn't 1402 * allow getting the state of this key programmatically, or if the keyboard 1403 * doesn't have this key 1404 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 1405 * returns true 1406 * @see java.awt.GraphicsEnvironment#isHeadless 1407 * @since 1.3 1408 */ 1409 public boolean getLockingKeyState(int keyCode) 1410 throws UnsupportedOperationException { 1411 if (! (keyCode == KeyEvent.VK_CAPS_LOCK || keyCode == KeyEvent.VK_NUM_LOCK || 1412 keyCode == KeyEvent.VK_SCROLL_LOCK || keyCode == KeyEvent.VK_KANA_LOCK)) { 1413 throw new IllegalArgumentException("invalid key for Toolkit.getLockingKeyState"); 1414 } 1415 throw new UnsupportedOperationException("Toolkit.getLockingKeyState"); 1416 } 1417 1418 /** 1419 * Sets the state of the given locking key on the keyboard. 1420 * Valid key codes are 1421 * {@link java.awt.event.KeyEvent#VK_CAPS_LOCK VK_CAPS_LOCK}, 1422 * {@link java.awt.event.KeyEvent#VK_NUM_LOCK VK_NUM_LOCK}, 1423 * {@link java.awt.event.KeyEvent#VK_SCROLL_LOCK VK_SCROLL_LOCK}, and 1424 * {@link java.awt.event.KeyEvent#VK_KANA_LOCK VK_KANA_LOCK}. 1425 * <p> 1426 * Depending on the platform, setting the state of a locking key may 1427 * involve event processing and therefore may not be immediately 1428 * observable through getLockingKeyState. 1429 * 1430 * @exception java.lang.IllegalArgumentException if <code>keyCode</code> 1431 * is not one of the valid key codes 1432 * @exception java.lang.UnsupportedOperationException if the host system doesn't 1433 * allow setting the state of this key programmatically, or if the keyboard 1434 * doesn't have this key 1435 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 1436 * returns true 1437 * @see java.awt.GraphicsEnvironment#isHeadless 1438 * @since 1.3 1439 */ 1440 public void setLockingKeyState(int keyCode, boolean on) 1441 throws UnsupportedOperationException { 1442 if (! (keyCode == KeyEvent.VK_CAPS_LOCK || keyCode == KeyEvent.VK_NUM_LOCK || 1443 keyCode == KeyEvent.VK_SCROLL_LOCK || keyCode == KeyEvent.VK_KANA_LOCK)) { 1444 throw new IllegalArgumentException("invalid key for Toolkit.setLockingKeyState"); 1445 } 1446 throw new UnsupportedOperationException("Toolkit.setLockingKeyState"); 1447 } 1448 1449 /** 1450 * Give native peers the ability to query the native container 1451 * given a native component (eg the direct parent may be lightweight). 1452 */ 1453 protected static Container getNativeContainer(Component c) { 1454 return c.getNativeContainer(); 1455 } 1456 1457 /** 1458 * Creates a new custom cursor object. 1459 * If the image to display is invalid, the cursor will be hidden (made 1460 * completely transparent), and the hotspot will be set to (0, 0). 1461 * 1462 * <p>Note that multi-frame images are invalid and may cause this 1463 * method to hang. 1464 * 1465 * @param cursor the image to display when the cursor is actived 1466 * @param hotSpot the X and Y of the large cursor's hot spot; the 1467 * hotSpot values must be less than the Dimension returned by 1468 * <code>getBestCursorSize</code> 1469 * @param name a localized description of the cursor, for Java Accessibility use 1470 * @exception IndexOutOfBoundsException if the hotSpot values are outside 1471 * the bounds of the cursor 1472 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 1473 * returns true 1474 * @see java.awt.GraphicsEnvironment#isHeadless 1475 * @since 1.2 1476 */ 1477 public Cursor createCustomCursor(Image cursor, Point hotSpot, String name) 1478 throws IndexOutOfBoundsException, HeadlessException 1479 { 1480 // Override to implement custom cursor support. 1481 if (this != Toolkit.getDefaultToolkit()) { 1482 return Toolkit.getDefaultToolkit(). 1483 createCustomCursor(cursor, hotSpot, name); 1484 } else { 1485 return new Cursor(Cursor.DEFAULT_CURSOR); 1486 } 1487 } 1488 1489 /** 1490 * Returns the supported cursor dimension which is closest to the desired 1491 * sizes. Systems which only support a single cursor size will return that 1492 * size regardless of the desired sizes. Systems which don't support custom 1493 * cursors will return a dimension of 0, 0. <p> 1494 * Note: if an image is used whose dimensions don't match a supported size 1495 * (as returned by this method), the Toolkit implementation will attempt to 1496 * resize the image to a supported size. 1497 * Since converting low-resolution images is difficult, 1498 * no guarantees are made as to the quality of a cursor image which isn't a 1499 * supported size. It is therefore recommended that this method 1500 * be called and an appropriate image used so no image conversion is made. 1501 * 1502 * @param preferredWidth the preferred cursor width the component would like 1503 * to use. 1504 * @param preferredHeight the preferred cursor height the component would like 1505 * to use. 1506 * @return the closest matching supported cursor size, or a dimension of 0,0 if 1507 * the Toolkit implementation doesn't support custom cursors. 1508 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 1509 * returns true 1510 * @see java.awt.GraphicsEnvironment#isHeadless 1511 * @since 1.2 1512 */ 1513 public Dimension getBestCursorSize(int preferredWidth, 1514 int preferredHeight) throws HeadlessException { 1515 // Override to implement custom cursor support. 1516 if (this != Toolkit.getDefaultToolkit()) { 1517 return Toolkit.getDefaultToolkit(). 1518 getBestCursorSize(preferredWidth, preferredHeight); 1519 } else { 1520 return new Dimension(0, 0); 1521 } 1522 } 1523 1524 /** 1525 * Returns the maximum number of colors the Toolkit supports in a custom cursor 1526 * palette.<p> 1527 * Note: if an image is used which has more colors in its palette than 1528 * the supported maximum, the Toolkit implementation will attempt to flatten the 1529 * palette to the maximum. Since converting low-resolution images is difficult, 1530 * no guarantees are made as to the quality of a cursor image which has more 1531 * colors than the system supports. It is therefore recommended that this method 1532 * be called and an appropriate image used so no image conversion is made. 1533 * 1534 * @return the maximum number of colors, or zero if custom cursors are not 1535 * supported by this Toolkit implementation. 1536 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 1537 * returns true 1538 * @see java.awt.GraphicsEnvironment#isHeadless 1539 * @since 1.2 1540 */ 1541 public int getMaximumCursorColors() throws HeadlessException { 1542 // Override to implement custom cursor support. 1543 if (this != Toolkit.getDefaultToolkit()) { 1544 return Toolkit.getDefaultToolkit().getMaximumCursorColors(); 1545 } else { 1546 return 0; 1547 } 1548 } 1549 1550 /** 1551 * Returns whether Toolkit supports this state for 1552 * <code>Frame</code>s. This method tells whether the <em>UI 1553 * concept</em> of, say, maximization or iconification is 1554 * supported. It will always return false for "compound" states 1555 * like <code>Frame.ICONIFIED|Frame.MAXIMIZED_VERT</code>. 1556 * In other words, the rule of thumb is that only queries with a 1557 * single frame state constant as an argument are meaningful. 1558 * <p>Note that supporting a given concept is a platform- 1559 * dependent feature. Due to native limitations the Toolkit 1560 * object may report a particular state as supported, however at 1561 * the same time the Toolkit object will be unable to apply the 1562 * state to a given frame. This circumstance has two following 1563 * consequences: 1564 * <ul> 1565 * <li>Only the return value of {@code false} for the present 1566 * method actually indicates that the given state is not 1567 * supported. If the method returns {@code true} the given state 1568 * may still be unsupported and/or unavailable for a particular 1569 * frame. 1570 * <li>The developer should consider examining the value of the 1571 * {@link java.awt.event.WindowEvent#getNewState} method of the 1572 * {@code WindowEvent} received through the {@link 1573 * java.awt.event.WindowStateListener}, rather than assuming 1574 * that the state given to the {@code setExtendedState()} method 1575 * will be definitely applied. For more information see the 1576 * documentation for the {@link Frame#setExtendedState} method. 1577 * </ul> 1578 * 1579 * @param state one of named frame state constants. 1580 * @return <code>true</code> is this frame state is supported by 1581 * this Toolkit implementation, <code>false</code> otherwise. 1582 * @exception HeadlessException 1583 * if <code>GraphicsEnvironment.isHeadless()</code> 1584 * returns <code>true</code>. 1585 * @see java.awt.Window#addWindowStateListener 1586 * @since 1.4 1587 */ 1588 public boolean isFrameStateSupported(int state) 1589 throws HeadlessException 1590 { 1591 if (GraphicsEnvironment.isHeadless()){ 1592 throw new HeadlessException(); 1593 } 1594 if (this != Toolkit.getDefaultToolkit()) { 1595 return Toolkit.getDefaultToolkit(). 1596 isFrameStateSupported(state); 1597 } else { 1598 return (state == Frame.NORMAL); // others are not guaranteed 1599 } 1600 } 1601 1602 /** 1603 * Support for I18N: any visible strings should be stored in 1604 * sun.awt.resources.awt.properties. The ResourceBundle is stored 1605 * here, so that only one copy is maintained. 1606 */ 1607 private static ResourceBundle resources; 1608 1609 /** 1610 * Initialize JNI field and method ids 1611 */ 1612 private static native void initIDs(); 1613 1614 /** 1615 * WARNING: This is a temporary workaround for a problem in the 1616 * way the AWT loads native libraries. A number of classes in the 1617 * AWT package have a native method, initIDs(), which initializes 1618 * the JNI field and method ids used in the native portion of 1619 * their implementation. 1620 * 1621 * Since the use and storage of these ids is done by the 1622 * implementation libraries, the implementation of these method is 1623 * provided by the particular AWT implementations (for example, 1624 * "Toolkit"s/Peer), such as Motif, Microsoft Windows, or Tiny. The 1625 * problem is that this means that the native libraries must be 1626 * loaded by the java.* classes, which do not necessarily know the 1627 * names of the libraries to load. A better way of doing this 1628 * would be to provide a separate library which defines java.awt.* 1629 * initIDs, and exports the relevant symbols out to the 1630 * implementation libraries. 1631 * 1632 * For now, we know it's done by the implementation, and we assume 1633 * that the name of the library is "awt". -br. 1634 * 1635 * If you change loadLibraries(), please add the change to 1636 * java.awt.image.ColorModel.loadLibraries(). Unfortunately, 1637 * classes can be loaded in java.awt.image that depend on 1638 * libawt and there is no way to call Toolkit.loadLibraries() 1639 * directly. -hung 1640 */ 1641 private static boolean loaded = false; 1642 static void loadLibraries() { 1643 if (!loaded) { 1644 java.security.AccessController.doPrivileged( 1645 new sun.security.action.LoadLibraryAction("awt")); 1646 loaded = true; 1647 } 1648 } 1649 1650 static { 1651 java.security.AccessController.doPrivileged( 1652 new java.security.PrivilegedAction() { 1653 public Object run() { 1654 try { 1655 resources = 1656 ResourceBundle.getBundle("sun.awt.resources.awt", 1657 CoreResourceBundleControl.getRBControlInstance()); 1658 } catch (MissingResourceException e) { 1659 // No resource file; defaults will be used. 1660 } 1661 return null; 1662 } 1663 }); 1664 1665 // ensure that the proper libraries are loaded 1666 loadLibraries(); 1667 initAssistiveTechnologies(); 1668 if (!GraphicsEnvironment.isHeadless()) { 1669 initIDs(); 1670 } 1671 } 1672 1673 /** 1674 * Gets a property with the specified key and default. 1675 * This method returns defaultValue if the property is not found. 1676 */ 1677 public static String getProperty(String key, String defaultValue) { 1678 if (resources != null) { 1679 try { 1680 return resources.getString(key); 1681 } 1682 catch (MissingResourceException e) {} 1683 } 1684 1685 return defaultValue; 1686 } 1687 1688 /** 1689 * Get the application's or applet's EventQueue instance. 1690 * Depending on the Toolkit implementation, different EventQueues 1691 * may be returned for different applets. Applets should 1692 * therefore not assume that the EventQueue instance returned 1693 * by this method will be shared by other applets or the system. 1694 * 1695 * <p>First, if there is a security manager, its 1696 * <code>checkAwtEventQueueAccess</code> 1697 * method is called. 1698 * If the default implementation of <code>checkAwtEventQueueAccess</code> 1699 * is used (that is, that method is not overriden), then this results in 1700 * a call to the security manager's <code>checkPermission</code> method 1701 * with an <code>AWTPermission("accessEventQueue")</code> permission. 1702 * 1703 * @return the <code>EventQueue</code> object 1704 * @throws SecurityException 1705 * if a security manager exists and its <code>{@link 1706 * java.lang.SecurityManager#checkAwtEventQueueAccess}</code> 1707 * method denies access to the <code>EventQueue</code> 1708 * @see java.awt.AWTPermission 1709 */ 1710 public final EventQueue getSystemEventQueue() { 1711 SecurityManager security = System.getSecurityManager(); 1712 if (security != null) { 1713 security.checkAwtEventQueueAccess(); 1714 } 1715 return getSystemEventQueueImpl(); 1716 } 1717 1718 /** 1719 * Gets the application's or applet's <code>EventQueue</code> 1720 * instance, without checking access. For security reasons, 1721 * this can only be called from a <code>Toolkit</code> subclass. 1722 * @return the <code>EventQueue</code> object 1723 */ 1724 protected abstract EventQueue getSystemEventQueueImpl(); 1725 1726 /* Accessor method for use by AWT package routines. */ 1727 static EventQueue getEventQueue() { 1728 return getDefaultToolkit().getSystemEventQueueImpl(); 1729 } 1730 1731 /** 1732 * Creates the peer for a DragSourceContext. 1733 * Always throws InvalidDndOperationException if 1734 * GraphicsEnvironment.isHeadless() returns true. 1735 * @see java.awt.GraphicsEnvironment#isHeadless 1736 */ 1737 public abstract DragSourceContextPeer createDragSourceContextPeer(DragGestureEvent dge) throws InvalidDnDOperationException; 1738 1739 /** 1740 * Creates a concrete, platform dependent, subclass of the abstract 1741 * DragGestureRecognizer class requested, and associates it with the 1742 * DragSource, Component and DragGestureListener specified. 1743 * 1744 * subclasses should override this to provide their own implementation 1745 * 1746 * @param abstractRecognizerClass The abstract class of the required recognizer 1747 * @param ds The DragSource 1748 * @param c The Component target for the DragGestureRecognizer 1749 * @param srcActions The actions permitted for the gesture 1750 * @param dgl The DragGestureListener 1751 * 1752 * @return the new object or null. Always returns null if 1753 * GraphicsEnvironment.isHeadless() returns true. 1754 * @see java.awt.GraphicsEnvironment#isHeadless 1755 */ 1756 public <T extends DragGestureRecognizer> T 1757 createDragGestureRecognizer(Class<T> abstractRecognizerClass, 1758 DragSource ds, Component c, int srcActions, 1759 DragGestureListener dgl) 1760 { 1761 return null; 1762 } 1763 1764 /** 1765 * Obtains a value for the specified desktop property. 1766 * 1767 * A desktop property is a uniquely named value for a resource that 1768 * is Toolkit global in nature. Usually it also is an abstract 1769 * representation for an underlying platform dependent desktop setting. 1770 * For more information on desktop properties supported by the AWT see 1771 * <a href="doc-files/DesktopProperties.html">AWT Desktop Properties</a>. 1772 */ 1773 public final synchronized Object getDesktopProperty(String propertyName) { 1774 // This is a workaround for headless toolkits. It would be 1775 // better to override this method but it is declared final. 1776 // "this instanceof" syntax defeats polymorphism. 1777 // --mm, 03/03/00 1778 if (this instanceof HeadlessToolkit) { 1779 return ((HeadlessToolkit)this).getUnderlyingToolkit() 1780 .getDesktopProperty(propertyName); 1781 } 1782 1783 if (desktopProperties.isEmpty()) { 1784 initializeDesktopProperties(); 1785 } 1786 1787 Object value; 1788 1789 // This property should never be cached 1790 if (propertyName.equals("awt.dynamicLayoutSupported")) { 1791 value = lazilyLoadDesktopProperty(propertyName); 1792 return value; 1793 } 1794 1795 value = desktopProperties.get(propertyName); 1796 1797 if (value == null) { 1798 value = lazilyLoadDesktopProperty(propertyName); 1799 1800 if (value != null) { 1801 setDesktopProperty(propertyName, value); 1802 } 1803 } 1804 1805 /* for property "awt.font.desktophints" */ 1806 if (value instanceof RenderingHints) { 1807 value = ((RenderingHints)value).clone(); 1808 } 1809 1810 return value; 1811 } 1812 1813 /** 1814 * Sets the named desktop property to the specified value and fires a 1815 * property change event to notify any listeners that the value has changed. 1816 */ 1817 protected final void setDesktopProperty(String name, Object newValue) { 1818 // This is a workaround for headless toolkits. It would be 1819 // better to override this method but it is declared final. 1820 // "this instanceof" syntax defeats polymorphism. 1821 // --mm, 03/03/00 1822 if (this instanceof HeadlessToolkit) { 1823 ((HeadlessToolkit)this).getUnderlyingToolkit() 1824 .setDesktopProperty(name, newValue); 1825 return; 1826 } 1827 Object oldValue; 1828 1829 synchronized (this) { 1830 oldValue = desktopProperties.get(name); 1831 desktopProperties.put(name, newValue); 1832 } 1833 1834 desktopPropsSupport.firePropertyChange(name, oldValue, newValue); 1835 } 1836 1837 /** 1838 * an opportunity to lazily evaluate desktop property values. 1839 */ 1840 protected Object lazilyLoadDesktopProperty(String name) { 1841 return null; 1842 } 1843 1844 /** 1845 * initializeDesktopProperties 1846 */ 1847 protected void initializeDesktopProperties() { 1848 } 1849 1850 /** 1851 * Adds the specified property change listener for the named desktop 1852 * property. 1853 * If pcl is null, no exception is thrown and no action is performed. 1854 * 1855 * @param name The name of the property to listen for 1856 * @param pcl The property change listener 1857 * @since 1.2 1858 */ 1859 public void addPropertyChangeListener(String name, PropertyChangeListener pcl) { 1860 desktopPropsSupport.addPropertyChangeListener(name, pcl); 1861 } 1862 1863 /** 1864 * Removes the specified property change listener for the named 1865 * desktop property. 1866 * If pcl is null, no exception is thrown and no action is performed. 1867 * 1868 * @param name The name of the property to remove 1869 * @param pcl The property change listener 1870 * @since 1.2 1871 */ 1872 public void removePropertyChangeListener(String name, PropertyChangeListener pcl) { 1873 desktopPropsSupport.removePropertyChangeListener(name, pcl); 1874 } 1875 1876 /** 1877 * Returns an array of all the property change listeners 1878 * registered on this toolkit. 1879 * 1880 * @return all of this toolkit's <code>PropertyChangeListener</code>s 1881 * or an empty array if no property change 1882 * listeners are currently registered 1883 * 1884 * @since 1.4 1885 */ 1886 public PropertyChangeListener[] getPropertyChangeListeners() { 1887 return desktopPropsSupport.getPropertyChangeListeners(); 1888 } 1889 1890 /** 1891 * Returns an array of all the <code>PropertyChangeListener</code>s 1892 * associated with the named property. 1893 * 1894 * @param propertyName the named property 1895 * @return all of the <code>PropertyChangeListener</code>s associated with 1896 * the named property or an empty array if no such listeners have 1897 * been added 1898 * @since 1.4 1899 */ 1900 public PropertyChangeListener[] getPropertyChangeListeners(String propertyName) { 1901 return desktopPropsSupport.getPropertyChangeListeners(propertyName); 1902 } 1903 1904 protected final Map<String,Object> desktopProperties = 1905 new HashMap<String,Object>(); 1906 protected final PropertyChangeSupport desktopPropsSupport = 1907 Toolkit.createPropertyChangeSupport(this); 1908 1909 /** 1910 * Returns whether the always-on-top mode is supported by this toolkit. 1911 * To detect whether the always-on-top mode is supported for a 1912 * particular Window, use {@link Window#isAlwaysOnTopSupported}. 1913 * @return <code>true</code>, if current toolkit supports the always-on-top mode, 1914 * otherwise returns <code>false</code> 1915 * @see Window#isAlwaysOnTopSupported 1916 * @see Window#setAlwaysOnTop(boolean) 1917 * @since 1.6 1918 */ 1919 public boolean isAlwaysOnTopSupported() { 1920 return true; 1921 } 1922 1923 /** 1924 * Returns whether the given modality type is supported by this toolkit. If 1925 * a dialog with unsupported modality type is created, then 1926 * <code>Dialog.ModalityType.MODELESS</code> is used instead. 1927 * 1928 * @param modalityType modality type to be checked for support by this toolkit 1929 * 1930 * @return <code>true</code>, if current toolkit supports given modality 1931 * type, <code>false</code> otherwise 1932 * 1933 * @see java.awt.Dialog.ModalityType 1934 * @see java.awt.Dialog#getModalityType 1935 * @see java.awt.Dialog#setModalityType 1936 * 1937 * @since 1.6 1938 */ 1939 public abstract boolean isModalityTypeSupported(Dialog.ModalityType modalityType); 1940 1941 /** 1942 * Returns whether the given modal exclusion type is supported by this 1943 * toolkit. If an unsupported modal exclusion type property is set on a window, 1944 * then <code>Dialog.ModalExclusionType.NO_EXCLUDE</code> is used instead. 1945 * 1946 * @param modalExclusionType modal exclusion type to be checked for support by this toolkit 1947 * 1948 * @return <code>true</code>, if current toolkit supports given modal exclusion 1949 * type, <code>false</code> otherwise 1950 * 1951 * @see java.awt.Dialog.ModalExclusionType 1952 * @see java.awt.Window#getModalExclusionType 1953 * @see java.awt.Window#setModalExclusionType 1954 * 1955 * @since 1.6 1956 */ 1957 public abstract boolean isModalExclusionTypeSupported(Dialog.ModalExclusionType modalExclusionType); 1958 1959 private static final PlatformLogger log = PlatformLogger.getLogger("java.awt.Toolkit"); 1960 1961 private static final int LONG_BITS = 64; 1962 private int[] calls = new int[LONG_BITS]; 1963 private static volatile long enabledOnToolkitMask; 1964 private AWTEventListener eventListener = null; 1965 private WeakHashMap listener2SelectiveListener = new WeakHashMap(); 1966 1967 /* 1968 * Extracts a "pure" AWTEventListener from a AWTEventListenerProxy, 1969 * if the listener is proxied. 1970 */ 1971 static private AWTEventListener deProxyAWTEventListener(AWTEventListener l) 1972 { 1973 AWTEventListener localL = l; 1974 1975 if (localL == null) { 1976 return null; 1977 } 1978 // if user passed in a AWTEventListenerProxy object, extract 1979 // the listener 1980 if (l instanceof AWTEventListenerProxy) { 1981 localL = ((AWTEventListenerProxy)l).getListener(); 1982 } 1983 return localL; 1984 } 1985 1986 /** 1987 * Adds an AWTEventListener to receive all AWTEvents dispatched 1988 * system-wide that conform to the given <code>eventMask</code>. 1989 * <p> 1990 * First, if there is a security manager, its <code>checkPermission</code> 1991 * method is called with an 1992 * <code>AWTPermission("listenToAllAWTEvents")</code> permission. 1993 * This may result in a SecurityException. 1994 * <p> 1995 * <code>eventMask</code> is a bitmask of event types to receive. 1996 * It is constructed by bitwise OR-ing together the event masks 1997 * defined in <code>AWTEvent</code>. 1998 * <p> 1999 * Note: event listener use is not recommended for normal 2000 * application use, but are intended solely to support special 2001 * purpose facilities including support for accessibility, 2002 * event record/playback, and diagnostic tracing. 2003 * 2004 * If listener is null, no exception is thrown and no action is performed. 2005 * 2006 * @param listener the event listener. 2007 * @param eventMask the bitmask of event types to receive 2008 * @throws SecurityException 2009 * if a security manager exists and its 2010 * <code>checkPermission</code> method doesn't allow the operation. 2011 * @see #removeAWTEventListener 2012 * @see #getAWTEventListeners 2013 * @see SecurityManager#checkPermission 2014 * @see java.awt.AWTEvent 2015 * @see java.awt.AWTPermission 2016 * @see java.awt.event.AWTEventListener 2017 * @see java.awt.event.AWTEventListenerProxy 2018 * @since 1.2 2019 */ 2020 public void addAWTEventListener(AWTEventListener listener, long eventMask) { 2021 AWTEventListener localL = deProxyAWTEventListener(listener); 2022 2023 if (localL == null) { 2024 return; 2025 } 2026 SecurityManager security = System.getSecurityManager(); 2027 if (security != null) { 2028 security.checkPermission(SecurityConstants.AWT.ALL_AWT_EVENTS_PERMISSION); 2029 } 2030 synchronized (this) { 2031 SelectiveAWTEventListener selectiveListener = 2032 (SelectiveAWTEventListener)listener2SelectiveListener.get(localL); 2033 2034 if (selectiveListener == null) { 2035 // Create a new selectiveListener. 2036 selectiveListener = new SelectiveAWTEventListener(localL, 2037 eventMask); 2038 listener2SelectiveListener.put(localL, selectiveListener); 2039 eventListener = ToolkitEventMulticaster.add(eventListener, 2040 selectiveListener); 2041 } 2042 // OR the eventMask into the selectiveListener's event mask. 2043 selectiveListener.orEventMasks(eventMask); 2044 2045 enabledOnToolkitMask |= eventMask; 2046 2047 long mask = eventMask; 2048 for (int i=0; i<LONG_BITS; i++) { 2049 // If no bits are set, break out of loop. 2050 if (mask == 0) { 2051 break; 2052 } 2053 if ((mask & 1L) != 0) { // Always test bit 0. 2054 calls[i]++; 2055 } 2056 mask >>>= 1; // Right shift, fill with zeros on left. 2057 } 2058 } 2059 } 2060 2061 /** 2062 * Removes an AWTEventListener from receiving dispatched AWTEvents. 2063 * <p> 2064 * First, if there is a security manager, its <code>checkPermission</code> 2065 * method is called with an 2066 * <code>AWTPermission("listenToAllAWTEvents")</code> permission. 2067 * This may result in a SecurityException. 2068 * <p> 2069 * Note: event listener use is not recommended for normal 2070 * application use, but are intended solely to support special 2071 * purpose facilities including support for accessibility, 2072 * event record/playback, and diagnostic tracing. 2073 * 2074 * If listener is null, no exception is thrown and no action is performed. 2075 * 2076 * @param listener the event listener. 2077 * @throws SecurityException 2078 * if a security manager exists and its 2079 * <code>checkPermission</code> method doesn't allow the operation. 2080 * @see #addAWTEventListener 2081 * @see #getAWTEventListeners 2082 * @see SecurityManager#checkPermission 2083 * @see java.awt.AWTEvent 2084 * @see java.awt.AWTPermission 2085 * @see java.awt.event.AWTEventListener 2086 * @see java.awt.event.AWTEventListenerProxy 2087 * @since 1.2 2088 */ 2089 public void removeAWTEventListener(AWTEventListener listener) { 2090 AWTEventListener localL = deProxyAWTEventListener(listener); 2091 2092 if (listener == null) { 2093 return; 2094 } 2095 SecurityManager security = System.getSecurityManager(); 2096 if (security != null) { 2097 security.checkPermission(SecurityConstants.AWT.ALL_AWT_EVENTS_PERMISSION); 2098 } 2099 2100 synchronized (this) { 2101 SelectiveAWTEventListener selectiveListener = 2102 (SelectiveAWTEventListener)listener2SelectiveListener.get(localL); 2103 2104 if (selectiveListener != null) { 2105 listener2SelectiveListener.remove(localL); 2106 int[] listenerCalls = selectiveListener.getCalls(); 2107 for (int i=0; i<LONG_BITS; i++) { 2108 calls[i] -= listenerCalls[i]; 2109 assert calls[i] >= 0: "Negative Listeners count"; 2110 2111 if (calls[i] == 0) { 2112 enabledOnToolkitMask &= ~(1L<<i); 2113 } 2114 } 2115 } 2116 eventListener = ToolkitEventMulticaster.remove(eventListener, 2117 (selectiveListener == null) ? localL : selectiveListener); 2118 } 2119 } 2120 2121 static boolean enabledOnToolkit(long eventMask) { 2122 return (enabledOnToolkitMask & eventMask) != 0; 2123 } 2124 2125 synchronized int countAWTEventListeners(long eventMask) { 2126 if (log.isLoggable(PlatformLogger.FINE)) { 2127 if (eventMask == 0) { 2128 log.fine("Assertion (eventMask != 0) failed"); 2129 } 2130 } 2131 2132 int ci = 0; 2133 for (; eventMask != 0; eventMask >>>= 1, ci++) { 2134 } 2135 ci--; 2136 return calls[ci]; 2137 } 2138 /** 2139 * Returns an array of all the <code>AWTEventListener</code>s 2140 * registered on this toolkit. 2141 * If there is a security manager, its {@code checkPermission} 2142 * method is called with an 2143 * {@code AWTPermission("listenToAllAWTEvents")} permission. 2144 * This may result in a SecurityException. 2145 * Listeners can be returned 2146 * within <code>AWTEventListenerProxy</code> objects, which also contain 2147 * the event mask for the given listener. 2148 * Note that listener objects 2149 * added multiple times appear only once in the returned array. 2150 * 2151 * @return all of the <code>AWTEventListener</code>s or an empty 2152 * array if no listeners are currently registered 2153 * @throws SecurityException 2154 * if a security manager exists and its 2155 * <code>checkPermission</code> method doesn't allow the operation. 2156 * @see #addAWTEventListener 2157 * @see #removeAWTEventListener 2158 * @see SecurityManager#checkPermission 2159 * @see java.awt.AWTEvent 2160 * @see java.awt.AWTPermission 2161 * @see java.awt.event.AWTEventListener 2162 * @see java.awt.event.AWTEventListenerProxy 2163 * @since 1.4 2164 */ 2165 public AWTEventListener[] getAWTEventListeners() { 2166 SecurityManager security = System.getSecurityManager(); 2167 if (security != null) { 2168 security.checkPermission(SecurityConstants.AWT.ALL_AWT_EVENTS_PERMISSION); 2169 } 2170 synchronized (this) { 2171 EventListener[] la = ToolkitEventMulticaster.getListeners(eventListener,AWTEventListener.class); 2172 2173 AWTEventListener[] ret = new AWTEventListener[la.length]; 2174 for (int i = 0; i < la.length; i++) { 2175 SelectiveAWTEventListener sael = (SelectiveAWTEventListener)la[i]; 2176 AWTEventListener tempL = sael.getListener(); 2177 //assert tempL is not an AWTEventListenerProxy - we should 2178 // have weeded them all out 2179 // don't want to wrap a proxy inside a proxy 2180 ret[i] = new AWTEventListenerProxy(sael.getEventMask(), tempL); 2181 } 2182 return ret; 2183 } 2184 } 2185 2186 /** 2187 * Returns an array of all the <code>AWTEventListener</code>s 2188 * registered on this toolkit which listen to all of the event 2189 * types specified in the {@code eventMask} argument. 2190 * If there is a security manager, its {@code checkPermission} 2191 * method is called with an 2192 * {@code AWTPermission("listenToAllAWTEvents")} permission. 2193 * This may result in a SecurityException. 2194 * Listeners can be returned 2195 * within <code>AWTEventListenerProxy</code> objects, which also contain 2196 * the event mask for the given listener. 2197 * Note that listener objects 2198 * added multiple times appear only once in the returned array. 2199 * 2200 * @param eventMask the bitmask of event types to listen for 2201 * @return all of the <code>AWTEventListener</code>s registered 2202 * on this toolkit for the specified 2203 * event types, or an empty array if no such listeners 2204 * are currently registered 2205 * @throws SecurityException 2206 * if a security manager exists and its 2207 * <code>checkPermission</code> method doesn't allow the operation. 2208 * @see #addAWTEventListener 2209 * @see #removeAWTEventListener 2210 * @see SecurityManager#checkPermission 2211 * @see java.awt.AWTEvent 2212 * @see java.awt.AWTPermission 2213 * @see java.awt.event.AWTEventListener 2214 * @see java.awt.event.AWTEventListenerProxy 2215 * @since 1.4 2216 */ 2217 public AWTEventListener[] getAWTEventListeners(long eventMask) { 2218 SecurityManager security = System.getSecurityManager(); 2219 if (security != null) { 2220 security.checkPermission(SecurityConstants.AWT.ALL_AWT_EVENTS_PERMISSION); 2221 } 2222 synchronized (this) { 2223 EventListener[] la = ToolkitEventMulticaster.getListeners(eventListener,AWTEventListener.class); 2224 2225 java.util.List list = new ArrayList(la.length); 2226 2227 for (int i = 0; i < la.length; i++) { 2228 SelectiveAWTEventListener sael = (SelectiveAWTEventListener)la[i]; 2229 if ((sael.getEventMask() & eventMask) == eventMask) { 2230 //AWTEventListener tempL = sael.getListener(); 2231 list.add(new AWTEventListenerProxy(sael.getEventMask(), 2232 sael.getListener())); 2233 } 2234 } 2235 return (AWTEventListener[])list.toArray(new AWTEventListener[0]); 2236 } 2237 } 2238 2239 /* 2240 * This method notifies any AWTEventListeners that an event 2241 * is about to be dispatched. 2242 * 2243 * @param theEvent the event which will be dispatched. 2244 */ 2245 void notifyAWTEventListeners(AWTEvent theEvent) { 2246 // This is a workaround for headless toolkits. It would be 2247 // better to override this method but it is declared package private. 2248 // "this instanceof" syntax defeats polymorphism. 2249 // --mm, 03/03/00 2250 if (this instanceof HeadlessToolkit) { 2251 ((HeadlessToolkit)this).getUnderlyingToolkit() 2252 .notifyAWTEventListeners(theEvent); 2253 return; 2254 } 2255 2256 AWTEventListener eventListener = this.eventListener; 2257 if (eventListener != null) { 2258 eventListener.eventDispatched(theEvent); 2259 } 2260 } 2261 2262 static private class ToolkitEventMulticaster extends AWTEventMulticaster 2263 implements AWTEventListener { 2264 // Implementation cloned from AWTEventMulticaster. 2265 2266 ToolkitEventMulticaster(AWTEventListener a, AWTEventListener b) { 2267 super(a, b); 2268 } 2269 2270 static AWTEventListener add(AWTEventListener a, 2271 AWTEventListener b) { 2272 if (a == null) return b; 2273 if (b == null) return a; 2274 return new ToolkitEventMulticaster(a, b); 2275 } 2276 2277 static AWTEventListener remove(AWTEventListener l, 2278 AWTEventListener oldl) { 2279 return (AWTEventListener) removeInternal(l, oldl); 2280 } 2281 2282 // #4178589: must overload remove(EventListener) to call our add() 2283 // instead of the static addInternal() so we allocate a 2284 // ToolkitEventMulticaster instead of an AWTEventMulticaster. 2285 // Note: this method is called by AWTEventListener.removeInternal(), 2286 // so its method signature must match AWTEventListener.remove(). 2287 protected EventListener remove(EventListener oldl) { 2288 if (oldl == a) return b; 2289 if (oldl == b) return a; 2290 AWTEventListener a2 = (AWTEventListener)removeInternal(a, oldl); 2291 AWTEventListener b2 = (AWTEventListener)removeInternal(b, oldl); 2292 if (a2 == a && b2 == b) { 2293 return this; // it's not here 2294 } 2295 return add(a2, b2); 2296 } 2297 2298 public void eventDispatched(AWTEvent event) { 2299 ((AWTEventListener)a).eventDispatched(event); 2300 ((AWTEventListener)b).eventDispatched(event); 2301 } 2302 } 2303 2304 private class SelectiveAWTEventListener implements AWTEventListener { 2305 AWTEventListener listener; 2306 private long eventMask; 2307 // This array contains the number of times to call the eventlistener 2308 // for each event type. 2309 int[] calls = new int[Toolkit.LONG_BITS]; 2310 2311 public AWTEventListener getListener() {return listener;} 2312 public long getEventMask() {return eventMask;} 2313 public int[] getCalls() {return calls;} 2314 2315 public void orEventMasks(long mask) { 2316 eventMask |= mask; 2317 // For each event bit set in mask, increment its call count. 2318 for (int i=0; i<Toolkit.LONG_BITS; i++) { 2319 // If no bits are set, break out of loop. 2320 if (mask == 0) { 2321 break; 2322 } 2323 if ((mask & 1L) != 0) { // Always test bit 0. 2324 calls[i]++; 2325 } 2326 mask >>>= 1; // Right shift, fill with zeros on left. 2327 } 2328 } 2329 2330 SelectiveAWTEventListener(AWTEventListener l, long mask) { 2331 listener = l; 2332 eventMask = mask; 2333 } 2334 2335 public void eventDispatched(AWTEvent event) { 2336 long eventBit = 0; // Used to save the bit of the event type. 2337 if (((eventBit = eventMask & AWTEvent.COMPONENT_EVENT_MASK) != 0 && 2338 event.id >= ComponentEvent.COMPONENT_FIRST && 2339 event.id <= ComponentEvent.COMPONENT_LAST) 2340 || ((eventBit = eventMask & AWTEvent.CONTAINER_EVENT_MASK) != 0 && 2341 event.id >= ContainerEvent.CONTAINER_FIRST && 2342 event.id <= ContainerEvent.CONTAINER_LAST) 2343 || ((eventBit = eventMask & AWTEvent.FOCUS_EVENT_MASK) != 0 && 2344 event.id >= FocusEvent.FOCUS_FIRST && 2345 event.id <= FocusEvent.FOCUS_LAST) 2346 || ((eventBit = eventMask & AWTEvent.KEY_EVENT_MASK) != 0 && 2347 event.id >= KeyEvent.KEY_FIRST && 2348 event.id <= KeyEvent.KEY_LAST) 2349 || ((eventBit = eventMask & AWTEvent.MOUSE_WHEEL_EVENT_MASK) != 0 && 2350 event.id == MouseEvent.MOUSE_WHEEL) 2351 || ((eventBit = eventMask & AWTEvent.MOUSE_MOTION_EVENT_MASK) != 0 && 2352 (event.id == MouseEvent.MOUSE_MOVED || 2353 event.id == MouseEvent.MOUSE_DRAGGED)) 2354 || ((eventBit = eventMask & AWTEvent.MOUSE_EVENT_MASK) != 0 && 2355 event.id != MouseEvent.MOUSE_MOVED && 2356 event.id != MouseEvent.MOUSE_DRAGGED && 2357 event.id != MouseEvent.MOUSE_WHEEL && 2358 event.id >= MouseEvent.MOUSE_FIRST && 2359 event.id <= MouseEvent.MOUSE_LAST) 2360 || ((eventBit = eventMask & AWTEvent.WINDOW_EVENT_MASK) != 0 && 2361 (event.id >= WindowEvent.WINDOW_FIRST && 2362 event.id <= WindowEvent.WINDOW_LAST)) 2363 || ((eventBit = eventMask & AWTEvent.ACTION_EVENT_MASK) != 0 && 2364 event.id >= ActionEvent.ACTION_FIRST && 2365 event.id <= ActionEvent.ACTION_LAST) 2366 || ((eventBit = eventMask & AWTEvent.ADJUSTMENT_EVENT_MASK) != 0 && 2367 event.id >= AdjustmentEvent.ADJUSTMENT_FIRST && 2368 event.id <= AdjustmentEvent.ADJUSTMENT_LAST) 2369 || ((eventBit = eventMask & AWTEvent.ITEM_EVENT_MASK) != 0 && 2370 event.id >= ItemEvent.ITEM_FIRST && 2371 event.id <= ItemEvent.ITEM_LAST) 2372 || ((eventBit = eventMask & AWTEvent.TEXT_EVENT_MASK) != 0 && 2373 event.id >= TextEvent.TEXT_FIRST && 2374 event.id <= TextEvent.TEXT_LAST) 2375 || ((eventBit = eventMask & AWTEvent.INPUT_METHOD_EVENT_MASK) != 0 && 2376 event.id >= InputMethodEvent.INPUT_METHOD_FIRST && 2377 event.id <= InputMethodEvent.INPUT_METHOD_LAST) 2378 || ((eventBit = eventMask & AWTEvent.PAINT_EVENT_MASK) != 0 && 2379 event.id >= PaintEvent.PAINT_FIRST && 2380 event.id <= PaintEvent.PAINT_LAST) 2381 || ((eventBit = eventMask & AWTEvent.INVOCATION_EVENT_MASK) != 0 && 2382 event.id >= InvocationEvent.INVOCATION_FIRST && 2383 event.id <= InvocationEvent.INVOCATION_LAST) 2384 || ((eventBit = eventMask & AWTEvent.HIERARCHY_EVENT_MASK) != 0 && 2385 event.id == HierarchyEvent.HIERARCHY_CHANGED) 2386 || ((eventBit = eventMask & AWTEvent.HIERARCHY_BOUNDS_EVENT_MASK) != 0 && 2387 (event.id == HierarchyEvent.ANCESTOR_MOVED || 2388 event.id == HierarchyEvent.ANCESTOR_RESIZED)) 2389 || ((eventBit = eventMask & AWTEvent.WINDOW_STATE_EVENT_MASK) != 0 && 2390 event.id == WindowEvent.WINDOW_STATE_CHANGED) 2391 || ((eventBit = eventMask & AWTEvent.WINDOW_FOCUS_EVENT_MASK) != 0 && 2392 (event.id == WindowEvent.WINDOW_GAINED_FOCUS || 2393 event.id == WindowEvent.WINDOW_LOST_FOCUS)) 2394 || ((eventBit = eventMask & sun.awt.SunToolkit.GRAB_EVENT_MASK) != 0 && 2395 (event instanceof sun.awt.UngrabEvent))) { 2396 // Get the index of the call count for this event type. 2397 // Instead of using Math.log(...) we will calculate it with 2398 // bit shifts. That's what previous implementation looked like: 2399 // 2400 // int ci = (int) (Math.log(eventBit)/Math.log(2)); 2401 int ci = 0; 2402 for (long eMask = eventBit; eMask != 0; eMask >>>= 1, ci++) { 2403 } 2404 ci--; 2405 // Call the listener as many times as it was added for this 2406 // event type. 2407 for (int i=0; i<calls[ci]; i++) { 2408 listener.eventDispatched(event); 2409 } 2410 } 2411 } 2412 } 2413 2414 /** 2415 * Returns a map of visual attributes for the abstract level description 2416 * of the given input method highlight, or null if no mapping is found. 2417 * The style field of the input method highlight is ignored. The map 2418 * returned is unmodifiable. 2419 * @param highlight input method highlight 2420 * @return style attribute map, or <code>null</code> 2421 * @exception HeadlessException if 2422 * <code>GraphicsEnvironment.isHeadless</code> returns true 2423 * @see java.awt.GraphicsEnvironment#isHeadless 2424 * @since 1.3 2425 */ 2426 public abstract Map<java.awt.font.TextAttribute,?> 2427 mapInputMethodHighlight(InputMethodHighlight highlight) 2428 throws HeadlessException; 2429 2430 private static PropertyChangeSupport createPropertyChangeSupport(Toolkit toolkit) { 2431 if (toolkit instanceof SunToolkit || toolkit instanceof HeadlessToolkit) { 2432 return new DesktopPropertyChangeSupport(toolkit); 2433 } else { 2434 return new PropertyChangeSupport(toolkit); 2435 } 2436 } 2437 2438 private static class DesktopPropertyChangeSupport extends PropertyChangeSupport { 2439 private static final StringBuilder PROP_CHANGE_SUPPORT_KEY = 2440 new StringBuilder("desktop property change support key"); 2441 private final Object source; 2442 2443 public DesktopPropertyChangeSupport(Object sourceBean) { 2444 super(sourceBean); 2445 source = sourceBean; 2446 } 2447 2448 @Override 2449 public synchronized void addPropertyChangeListener( 2450 String propertyName, 2451 PropertyChangeListener listener) 2452 { 2453 PropertyChangeSupport pcs = (PropertyChangeSupport) 2454 AppContext.getAppContext().get(PROP_CHANGE_SUPPORT_KEY); 2455 if (null == pcs) { 2456 pcs = new PropertyChangeSupport(source); 2457 AppContext.getAppContext().put(PROP_CHANGE_SUPPORT_KEY, pcs); 2458 } 2459 pcs.addPropertyChangeListener(propertyName, listener); 2460 } 2461 2462 @Override 2463 public synchronized void removePropertyChangeListener( 2464 String propertyName, 2465 PropertyChangeListener listener) 2466 { 2467 PropertyChangeSupport pcs = (PropertyChangeSupport) 2468 AppContext.getAppContext().get(PROP_CHANGE_SUPPORT_KEY); 2469 if (null != pcs) { 2470 pcs.removePropertyChangeListener(propertyName, listener); 2471 } 2472 } 2473 2474 @Override 2475 public synchronized PropertyChangeListener[] getPropertyChangeListeners() 2476 { 2477 PropertyChangeSupport pcs = (PropertyChangeSupport) 2478 AppContext.getAppContext().get(PROP_CHANGE_SUPPORT_KEY); 2479 if (null != pcs) { 2480 return pcs.getPropertyChangeListeners(); 2481 } else { 2482 return new PropertyChangeListener[0]; 2483 } 2484 } 2485 2486 @Override 2487 public synchronized PropertyChangeListener[] getPropertyChangeListeners(String propertyName) 2488 { 2489 PropertyChangeSupport pcs = (PropertyChangeSupport) 2490 AppContext.getAppContext().get(PROP_CHANGE_SUPPORT_KEY); 2491 if (null != pcs) { 2492 return pcs.getPropertyChangeListeners(propertyName); 2493 } else { 2494 return new PropertyChangeListener[0]; 2495 } 2496 } 2497 2498 @Override 2499 public synchronized void addPropertyChangeListener(PropertyChangeListener listener) { 2500 PropertyChangeSupport pcs = (PropertyChangeSupport) 2501 AppContext.getAppContext().get(PROP_CHANGE_SUPPORT_KEY); 2502 if (null == pcs) { 2503 pcs = new PropertyChangeSupport(source); 2504 AppContext.getAppContext().put(PROP_CHANGE_SUPPORT_KEY, pcs); 2505 } 2506 pcs.addPropertyChangeListener(listener); 2507 } 2508 2509 @Override 2510 public synchronized void removePropertyChangeListener(PropertyChangeListener listener) { 2511 PropertyChangeSupport pcs = (PropertyChangeSupport) 2512 AppContext.getAppContext().get(PROP_CHANGE_SUPPORT_KEY); 2513 if (null != pcs) { 2514 pcs.removePropertyChangeListener(listener); 2515 } 2516 } 2517 2518 /* 2519 * we do expect that all other fireXXX() methods of java.beans.PropertyChangeSupport 2520 * use this method. If this will be changed we will need to change this class. 2521 */ 2522 @Override 2523 public void firePropertyChange(final PropertyChangeEvent evt) { 2524 Object oldValue = evt.getOldValue(); 2525 Object newValue = evt.getNewValue(); 2526 String propertyName = evt.getPropertyName(); 2527 if (oldValue != null && newValue != null && oldValue.equals(newValue)) { 2528 return; 2529 } 2530 Runnable updater = new Runnable() { 2531 public void run() { 2532 PropertyChangeSupport pcs = (PropertyChangeSupport) 2533 AppContext.getAppContext().get(PROP_CHANGE_SUPPORT_KEY); 2534 if (null != pcs) { 2535 pcs.firePropertyChange(evt); 2536 } 2537 } 2538 }; 2539 final AppContext currentAppContext = AppContext.getAppContext(); 2540 for (AppContext appContext : AppContext.getAppContexts()) { 2541 if (null == appContext || appContext.isDisposed()) { 2542 continue; 2543 } 2544 if (currentAppContext == appContext) { 2545 updater.run(); 2546 } else { 2547 final PeerEvent e = new PeerEvent(source, updater, PeerEvent.ULTIMATE_PRIORITY_EVENT); 2548 SunToolkit.postEvent(appContext, e); 2549 } 2550 } 2551 } 2552 } 2553 2554 /** 2555 * Reports whether events from extra mouse buttons are allowed to be processed and posted into 2556 * {@code EventQueue}. 2557 * <br> 2558 * To change the returned value it is necessary to set the {@code sun.awt.enableExtraMouseButtons} 2559 * property before the {@code Toolkit} class initialization. This setting could be done on the application 2560 * startup by the following command: 2561 * <pre> 2562 * java -Dsun.awt.enableExtraMouseButtons=false Application 2563 * </pre> 2564 * Alternatively, the property could be set in the application by using the following code: 2565 * <pre> 2566 * System.setProperty("sun.awt.enableExtraMouseButtons", "true"); 2567 * </pre> 2568 * before the {@code Toolkit} class initialization. 2569 * If not set by the time of the {@code Toolkit} class initialization, this property will be 2570 * initialized with {@code true}. 2571 * Changing this value after the {@code Toolkit} class initialization will have no effect. 2572 * <p> 2573 * The current value could be queried by using the 2574 * {@code System.getProperty("sun.awt.enableExtraMouseButtons")} method. 2575 * @exception HeadlessException if GraphicsEnvironment.isHeadless() returns true 2576 * @return {@code true} if events from extra mouse buttons are allowed to be processed and posted; 2577 * {@code false} otherwise 2578 * @see System#getProperty(String propertyName) 2579 * @see System#setProperty(String propertyName, String value) 2580 * @see java.awt.EventQueue 2581 * @since 1.7 2582 */ 2583 public boolean areExtraMouseButtonsEnabled() throws HeadlessException { 2584 return Toolkit.getDefaultToolkit().areExtraMouseButtonsEnabled(); 2585 } 2586 }