1 /* 2 * Copyright (c) 1995, 2011, Oracle and/or its affiliates. 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. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * 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 GraphicsEnvironment.checkHeadless(); 470 } 471 472 /** 473 * Controls whether the layout of Containers is validated dynamically 474 * during resizing, or statically, after resizing is complete. 475 * Use {@code isDynamicLayoutActive()} to detect if this feature enabled 476 * in this program and is supported by this operating system 477 * and/or window manager. 478 * Note that this feature is supported not on all platforms, and 479 * conversely, that this feature cannot be turned off on some platforms. 480 * On these platforms where dynamic layout during resizing is not supported 481 * (or is always supported), setting this property has no effect. 482 * Note that this feature can be set or unset as a property of the 483 * operating system or window manager on some platforms. On such 484 * platforms, the dynamic resize property must be set at the operating 485 * system or window manager level before this method can take effect. 486 * This method does not change support or settings of the underlying 487 * operating system or 488 * window manager. The OS/WM support can be 489 * queried using getDesktopProperty("awt.dynamicLayoutSupported") method. 490 * 491 * @param dynamic If true, Containers should re-layout their 492 * components as the Container is being resized. If false, 493 * the layout will be validated after resizing is completed. 494 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 495 * returns true 496 * @see #isDynamicLayoutSet() 497 * @see #isDynamicLayoutActive() 498 * @see #getDesktopProperty(String propertyName) 499 * @see java.awt.GraphicsEnvironment#isHeadless 500 * @since 1.4 501 */ 502 public void setDynamicLayout(boolean dynamic) 503 throws HeadlessException { 504 GraphicsEnvironment.checkHeadless(); 505 } 506 507 /** 508 * Returns whether the layout of Containers is validated dynamically 509 * during resizing, or statically, after resizing is complete. 510 * Note: this method returns the value that was set programmatically; 511 * it does not reflect support at the level of the operating system 512 * or window manager for dynamic layout on resizing, or the current 513 * operating system or window manager settings. The OS/WM support can 514 * be queried using getDesktopProperty("awt.dynamicLayoutSupported"). 515 * 516 * @return true if validation of Containers is done dynamically, 517 * false if validation is done after resizing is finished. 518 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 519 * returns true 520 * @see #setDynamicLayout(boolean dynamic) 521 * @see #isDynamicLayoutActive() 522 * @see #getDesktopProperty(String propertyName) 523 * @see java.awt.GraphicsEnvironment#isHeadless 524 * @since 1.4 525 */ 526 protected boolean isDynamicLayoutSet() 527 throws HeadlessException { 528 GraphicsEnvironment.checkHeadless(); 529 530 if (this != Toolkit.getDefaultToolkit()) { 531 return Toolkit.getDefaultToolkit().isDynamicLayoutSet(); 532 } else { 533 return false; 534 } 535 } 536 537 /** 538 * Returns whether dynamic layout of Containers on resize is 539 * currently active (both set in program 540 *( {@code isDynamicLayoutSet()} ) 541 *, and supported 542 * by the underlying operating system and/or window manager). 543 * If dynamic layout is currently inactive then Containers 544 * re-layout their components when resizing is completed. As a result 545 * the {@code Component.validate()} method will be invoked only 546 * once per resize. 547 * If dynamic layout is currently active then Containers 548 * re-layout their components on every native resize event and 549 * the {@code validate()} method will be invoked each time. 550 * The OS/WM support can be queried using 551 * the getDesktopProperty("awt.dynamicLayoutSupported") method. 552 * 553 * @return true if dynamic layout of Containers on resize is 554 * currently active, false otherwise. 555 * @exception HeadlessException if the GraphicsEnvironment.isHeadless() 556 * method returns true 557 * @see #setDynamicLayout(boolean dynamic) 558 * @see #isDynamicLayoutSet() 559 * @see #getDesktopProperty(String propertyName) 560 * @see java.awt.GraphicsEnvironment#isHeadless 561 * @since 1.4 562 */ 563 public boolean isDynamicLayoutActive() 564 throws HeadlessException { 565 GraphicsEnvironment.checkHeadless(); 566 567 if (this != Toolkit.getDefaultToolkit()) { 568 return Toolkit.getDefaultToolkit().isDynamicLayoutActive(); 569 } else { 570 return false; 571 } 572 } 573 574 /** 575 * Gets the size of the screen. On systems with multiple displays, the 576 * primary display is used. Multi-screen aware display dimensions are 577 * available from <code>GraphicsConfiguration</code> and 578 * <code>GraphicsDevice</code>. 579 * @return the size of this toolkit's screen, in pixels. 580 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 581 * returns true 582 * @see java.awt.GraphicsConfiguration#getBounds 583 * @see java.awt.GraphicsDevice#getDisplayMode 584 * @see java.awt.GraphicsEnvironment#isHeadless 585 */ 586 public abstract Dimension getScreenSize() 587 throws HeadlessException; 588 589 /** 590 * Returns the screen resolution in dots-per-inch. 591 * @return this toolkit's screen resolution, in dots-per-inch. 592 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 593 * returns true 594 * @see java.awt.GraphicsEnvironment#isHeadless 595 */ 596 public abstract int getScreenResolution() 597 throws HeadlessException; 598 599 /** 600 * Gets the insets of the screen. 601 * @param gc a <code>GraphicsConfiguration</code> 602 * @return the insets of this toolkit's screen, in pixels. 603 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 604 * returns true 605 * @see java.awt.GraphicsEnvironment#isHeadless 606 * @since 1.4 607 */ 608 public Insets getScreenInsets(GraphicsConfiguration gc) 609 throws HeadlessException { 610 GraphicsEnvironment.checkHeadless(); 611 if (this != Toolkit.getDefaultToolkit()) { 612 return Toolkit.getDefaultToolkit().getScreenInsets(gc); 613 } else { 614 return new Insets(0, 0, 0, 0); 615 } 616 } 617 618 /** 619 * Determines the color model of this toolkit's screen. 620 * <p> 621 * <code>ColorModel</code> is an abstract class that 622 * encapsulates the ability to translate between the 623 * pixel values of an image and its red, green, blue, 624 * and alpha components. 625 * <p> 626 * This toolkit method is called by the 627 * <code>getColorModel</code> method 628 * of the <code>Component</code> class. 629 * @return the color model of this toolkit's screen. 630 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 631 * returns true 632 * @see java.awt.GraphicsEnvironment#isHeadless 633 * @see java.awt.image.ColorModel 634 * @see java.awt.Component#getColorModel 635 */ 636 public abstract ColorModel getColorModel() 637 throws HeadlessException; 638 639 /** 640 * Returns the names of the available fonts in this toolkit.<p> 641 * For 1.1, the following font names are deprecated (the replacement 642 * name follows): 643 * <ul> 644 * <li>TimesRoman (use Serif) 645 * <li>Helvetica (use SansSerif) 646 * <li>Courier (use Monospaced) 647 * </ul><p> 648 * The ZapfDingbats fontname is also deprecated in 1.1 but the characters 649 * are defined in Unicode starting at 0x2700, and as of 1.1 Java supports 650 * those characters. 651 * @return the names of the available fonts in this toolkit. 652 * @deprecated see {@link java.awt.GraphicsEnvironment#getAvailableFontFamilyNames()} 653 * @see java.awt.GraphicsEnvironment#getAvailableFontFamilyNames() 654 */ 655 @Deprecated 656 public abstract String[] getFontList(); 657 658 /** 659 * Gets the screen device metrics for rendering of the font. 660 * @param font a font 661 * @return the screen metrics of the specified font in this toolkit 662 * @deprecated As of JDK version 1.2, replaced by the <code>Font</code> 663 * method <code>getLineMetrics</code>. 664 * @see java.awt.font.LineMetrics 665 * @see java.awt.Font#getLineMetrics 666 * @see java.awt.GraphicsEnvironment#getScreenDevices 667 */ 668 @Deprecated 669 public abstract FontMetrics getFontMetrics(Font font); 670 671 /** 672 * Synchronizes this toolkit's graphics state. Some window systems 673 * may do buffering of graphics events. 674 * <p> 675 * This method ensures that the display is up-to-date. It is useful 676 * for animation. 677 */ 678 public abstract void sync(); 679 680 /** 681 * The default toolkit. 682 */ 683 private static Toolkit toolkit; 684 685 /** 686 * Used internally by the assistive technologies functions; set at 687 * init time and used at load time 688 */ 689 private static String atNames; 690 691 /** 692 * Initializes properties related to assistive technologies. 693 * These properties are used both in the loadAssistiveProperties() 694 * function below, as well as other classes in the jdk that depend 695 * on the properties (such as the use of the screen_magnifier_present 696 * property in Java2D hardware acceleration initialization). The 697 * initialization of the properties must be done before the platform- 698 * specific Toolkit class is instantiated so that all necessary 699 * properties are set up properly before any classes dependent upon them 700 * are initialized. 701 */ 702 private static void initAssistiveTechnologies() { 703 704 // Get accessibility properties 705 final String sep = File.separator; 706 final Properties properties = new Properties(); 707 708 709 atNames = java.security.AccessController.doPrivileged( 710 new java.security.PrivilegedAction<String>() { 711 public String run() { 712 713 // Try loading the per-user accessibility properties file. 714 try { 715 File propsFile = new File( 716 System.getProperty("user.home") + 717 sep + ".accessibility.properties"); 718 FileInputStream in = 719 new FileInputStream(propsFile); 720 721 // Inputstream has been buffered in Properties class 722 properties.load(in); 723 in.close(); 724 } catch (Exception e) { 725 // Per-user accessibility properties file does not exist 726 } 727 728 // Try loading the system-wide accessibility properties 729 // file only if a per-user accessibility properties 730 // file does not exist or is empty. 731 if (properties.size() == 0) { 732 try { 733 File propsFile = new File( 734 System.getProperty("java.home") + sep + "lib" + 735 sep + "accessibility.properties"); 736 FileInputStream in = 737 new FileInputStream(propsFile); 738 739 // Inputstream has been buffered in Properties class 740 properties.load(in); 741 in.close(); 742 } catch (Exception e) { 743 // System-wide accessibility properties file does 744 // not exist; 745 } 746 } 747 748 // Get whether a screen magnifier is present. First check 749 // the system property and then check the properties file. 750 String magPresent = System.getProperty("javax.accessibility.screen_magnifier_present"); 751 if (magPresent == null) { 752 magPresent = properties.getProperty("screen_magnifier_present", null); 753 if (magPresent != null) { 754 System.setProperty("javax.accessibility.screen_magnifier_present", magPresent); 755 } 756 } 757 758 // Get the names of any assistive technolgies to load. First 759 // check the system property and then check the properties 760 // file. 761 String classNames = System.getProperty("javax.accessibility.assistive_technologies"); 762 if (classNames == null) { 763 classNames = properties.getProperty("assistive_technologies", null); 764 if (classNames != null) { 765 System.setProperty("javax.accessibility.assistive_technologies", classNames); 766 } 767 } 768 return classNames; 769 } 770 }); 771 } 772 773 /** 774 * Loads additional classes into the VM, using the property 775 * 'assistive_technologies' specified in the Sun reference 776 * implementation by a line in the 'accessibility.properties' 777 * file. The form is "assistive_technologies=..." where 778 * the "..." is a comma-separated list of assistive technology 779 * classes to load. Each class is loaded in the order given 780 * and a single instance of each is created using 781 * Class.forName(class).newInstance(). All errors are handled 782 * via an AWTError exception. 783 * 784 * <p>The assumption is made that assistive technology classes are supplied 785 * as part of INSTALLED (as opposed to: BUNDLED) extensions or specified 786 * on the class path 787 * (and therefore can be loaded using the class loader returned by 788 * a call to <code>ClassLoader.getSystemClassLoader</code>, whose 789 * delegation parent is the extension class loader for installed 790 * extensions). 791 */ 792 private static void loadAssistiveTechnologies() { 793 // Load any assistive technologies 794 if (atNames != null) { 795 ClassLoader cl = ClassLoader.getSystemClassLoader(); 796 StringTokenizer parser = new StringTokenizer(atNames," ,"); 797 String atName; 798 while (parser.hasMoreTokens()) { 799 atName = parser.nextToken(); 800 try { 801 Class<?> clazz; 802 if (cl != null) { 803 clazz = cl.loadClass(atName); 804 } else { 805 clazz = Class.forName(atName); 806 } 807 clazz.newInstance(); 808 } catch (ClassNotFoundException e) { 809 throw new AWTError("Assistive Technology not found: " 810 + atName); 811 } catch (InstantiationException e) { 812 throw new AWTError("Could not instantiate Assistive" 813 + " Technology: " + atName); 814 } catch (IllegalAccessException e) { 815 throw new AWTError("Could not access Assistive" 816 + " Technology: " + atName); 817 } catch (Exception e) { 818 throw new AWTError("Error trying to install Assistive" 819 + " Technology: " + atName + " " + e); 820 } 821 } 822 } 823 } 824 825 /** 826 * Gets the default toolkit. 827 * <p> 828 * If a system property named <code>"java.awt.headless"</code> is set 829 * to <code>true</code> then the headless implementation 830 * of <code>Toolkit</code> is used. 831 * <p> 832 * If there is no <code>"java.awt.headless"</code> or it is set to 833 * <code>false</code> and there is a system property named 834 * <code>"awt.toolkit"</code>, 835 * that property is treated as the name of a class that is a subclass 836 * of <code>Toolkit</code>; 837 * otherwise the default platform-specific implementation of 838 * <code>Toolkit</code> is used. 839 * <p> 840 * Also loads additional classes into the VM, using the property 841 * 'assistive_technologies' specified in the Sun reference 842 * implementation by a line in the 'accessibility.properties' 843 * file. The form is "assistive_technologies=..." where 844 * the "..." is a comma-separated list of assistive technology 845 * classes to load. Each class is loaded in the order given 846 * and a single instance of each is created using 847 * Class.forName(class).newInstance(). This is done just after 848 * the AWT toolkit is created. All errors are handled via an 849 * AWTError exception. 850 * @return the default toolkit. 851 * @exception AWTError if a toolkit could not be found, or 852 * if one could not be accessed or instantiated. 853 */ 854 public static synchronized Toolkit getDefaultToolkit() { 855 if (toolkit == null) { 856 try { 857 // We disable the JIT during toolkit initialization. This 858 // tends to touch lots of classes that aren't needed again 859 // later and therefore JITing is counter-productiive. 860 java.lang.Compiler.disable(); 861 862 java.security.AccessController.doPrivileged( 863 new java.security.PrivilegedAction<Void>() { 864 public Void run() { 865 String nm = null; 866 Class<?> cls = null; 867 try { 868 nm = System.getProperty("awt.toolkit"); 869 try { 870 cls = Class.forName(nm); 871 } catch (ClassNotFoundException e) { 872 ClassLoader cl = ClassLoader.getSystemClassLoader(); 873 if (cl != null) { 874 try { 875 cls = cl.loadClass(nm); 876 } catch (ClassNotFoundException ee) { 877 throw new AWTError("Toolkit not found: " + nm); 878 } 879 } 880 } 881 if (cls != null) { 882 toolkit = (Toolkit)cls.newInstance(); 883 if (GraphicsEnvironment.isHeadless()) { 884 toolkit = new HeadlessToolkit(toolkit); 885 } 886 } 887 } catch (InstantiationException e) { 888 throw new AWTError("Could not instantiate Toolkit: " + nm); 889 } catch (IllegalAccessException e) { 890 throw new AWTError("Could not access Toolkit: " + nm); 891 } 892 return null; 893 } 894 }); 895 loadAssistiveTechnologies(); 896 } finally { 897 // Make sure to always re-enable the JIT. 898 java.lang.Compiler.enable(); 899 } 900 } 901 return toolkit; 902 } 903 904 /** 905 * Returns an image which gets pixel data from the specified file, 906 * whose format can be either GIF, JPEG or PNG. 907 * The underlying toolkit attempts to resolve multiple requests 908 * with the same filename to the same returned Image. 909 * <p> 910 * Since the mechanism required to facilitate this sharing of 911 * <code>Image</code> objects may continue to hold onto images 912 * that are no longer in use for an indefinite period of time, 913 * developers are encouraged to implement their own caching of 914 * images by using the {@link #createImage(java.lang.String) createImage} 915 * variant wherever available. 916 * If the image data contained in the specified file changes, 917 * the <code>Image</code> object returned from this method may 918 * still contain stale information which was loaded from the 919 * file after a prior call. 920 * Previously loaded image data can be manually discarded by 921 * calling the {@link Image#flush flush} method on the 922 * returned <code>Image</code>. 923 * <p> 924 * This method first checks if there is a security manager installed. 925 * If so, the method calls the security manager's 926 * <code>checkRead</code> method with the file specified to ensure 927 * that the access to the image is allowed. 928 * @param filename the name of a file containing pixel data 929 * in a recognized file format. 930 * @return an image which gets its pixel data from 931 * the specified file. 932 * @throws SecurityException if a security manager exists and its 933 * checkRead method doesn't allow the operation. 934 * @see #createImage(java.lang.String) 935 */ 936 public abstract Image getImage(String filename); 937 938 /** 939 * Returns an image which gets pixel data from the specified URL. 940 * The pixel data referenced by the specified URL must be in one 941 * of the following formats: GIF, JPEG or PNG. 942 * The underlying toolkit attempts to resolve multiple requests 943 * with the same URL to the same returned Image. 944 * <p> 945 * Since the mechanism required to facilitate this sharing of 946 * <code>Image</code> objects may continue to hold onto images 947 * that are no longer in use for an indefinite period of time, 948 * developers are encouraged to implement their own caching of 949 * images by using the {@link #createImage(java.net.URL) createImage} 950 * variant wherever available. 951 * If the image data stored at the specified URL changes, 952 * the <code>Image</code> object returned from this method may 953 * still contain stale information which was fetched from the 954 * URL after a prior call. 955 * Previously loaded image data can be manually discarded by 956 * calling the {@link Image#flush flush} method on the 957 * returned <code>Image</code>. 958 * <p> 959 * This method first checks if there is a security manager installed. 960 * If so, the method calls the security manager's 961 * <code>checkPermission</code> method with the 962 * url.openConnection().getPermission() permission to ensure 963 * that the access to the image is allowed. For compatibility 964 * with pre-1.2 security managers, if the access is denied with 965 * <code>FilePermission</code> or <code>SocketPermission</code>, 966 * the method throws the <code>SecurityException</code> 967 * if the corresponding 1.1-style SecurityManager.checkXXX method 968 * also denies permission. 969 * @param url the URL to use in fetching the pixel data. 970 * @return an image which gets its pixel data from 971 * the specified URL. 972 * @throws SecurityException if a security manager exists and its 973 * checkPermission method doesn't allow 974 * the operation. 975 * @see #createImage(java.net.URL) 976 */ 977 public abstract Image getImage(URL url); 978 979 /** 980 * Returns an image which gets pixel data from the specified file. 981 * The returned Image is a new object which will not be shared 982 * with any other caller of this method or its getImage variant. 983 * <p> 984 * This method first checks if there is a security manager installed. 985 * If so, the method calls the security manager's 986 * <code>checkRead</code> method with the specified file to ensure 987 * that the image creation is allowed. 988 * @param filename the name of a file containing pixel data 989 * in a recognized file format. 990 * @return an image which gets its pixel data from 991 * the specified file. 992 * @throws SecurityException if a security manager exists and its 993 * checkRead method doesn't allow the operation. 994 * @see #getImage(java.lang.String) 995 */ 996 public abstract Image createImage(String filename); 997 998 /** 999 * Returns an image which gets pixel data from the specified URL. 1000 * The returned Image is a new object which will not be shared 1001 * with any other caller of this method or its getImage variant. 1002 * <p> 1003 * This method first checks if there is a security manager installed. 1004 * If so, the method calls the security manager's 1005 * <code>checkPermission</code> method with the 1006 * url.openConnection().getPermission() permission to ensure 1007 * that the image creation is allowed. For compatibility 1008 * with pre-1.2 security managers, if the access is denied with 1009 * <code>FilePermission</code> or <code>SocketPermission</code>, 1010 * the method throws <code>SecurityException</code> 1011 * if the corresponding 1.1-style SecurityManager.checkXXX method 1012 * also denies permission. 1013 * @param url the URL to use in fetching the pixel data. 1014 * @return an image which gets its pixel data from 1015 * the specified URL. 1016 * @throws SecurityException if a security manager exists and its 1017 * checkPermission method doesn't allow 1018 * the operation. 1019 * @see #getImage(java.net.URL) 1020 */ 1021 public abstract Image createImage(URL url); 1022 1023 /** 1024 * Prepares an image for rendering. 1025 * <p> 1026 * If the values of the width and height arguments are both 1027 * <code>-1</code>, this method prepares the image for rendering 1028 * on the default screen; otherwise, this method prepares an image 1029 * for rendering on the default screen at the specified width and height. 1030 * <p> 1031 * The image data is downloaded asynchronously in another thread, 1032 * and an appropriately scaled screen representation of the image is 1033 * generated. 1034 * <p> 1035 * This method is called by components <code>prepareImage</code> 1036 * methods. 1037 * <p> 1038 * Information on the flags returned by this method can be found 1039 * with the definition of the <code>ImageObserver</code> interface. 1040 1041 * @param image the image for which to prepare a 1042 * screen representation. 1043 * @param width the width of the desired screen 1044 * representation, or <code>-1</code>. 1045 * @param height the height of the desired screen 1046 * representation, or <code>-1</code>. 1047 * @param observer the <code>ImageObserver</code> 1048 * object to be notified as the 1049 * image is being prepared. 1050 * @return <code>true</code> if the image has already been 1051 * fully prepared; <code>false</code> otherwise. 1052 * @see java.awt.Component#prepareImage(java.awt.Image, 1053 * java.awt.image.ImageObserver) 1054 * @see java.awt.Component#prepareImage(java.awt.Image, 1055 * int, int, java.awt.image.ImageObserver) 1056 * @see java.awt.image.ImageObserver 1057 */ 1058 public abstract boolean prepareImage(Image image, int width, int height, 1059 ImageObserver observer); 1060 1061 /** 1062 * Indicates the construction status of a specified image that is 1063 * being prepared for display. 1064 * <p> 1065 * If the values of the width and height arguments are both 1066 * <code>-1</code>, this method returns the construction status of 1067 * a screen representation of the specified image in this toolkit. 1068 * Otherwise, this method returns the construction status of a 1069 * scaled representation of the image at the specified width 1070 * and height. 1071 * <p> 1072 * This method does not cause the image to begin loading. 1073 * An application must call <code>prepareImage</code> to force 1074 * the loading of an image. 1075 * <p> 1076 * This method is called by the component's <code>checkImage</code> 1077 * methods. 1078 * <p> 1079 * Information on the flags returned by this method can be found 1080 * with the definition of the <code>ImageObserver</code> interface. 1081 * @param image the image whose status is being checked. 1082 * @param width the width of the scaled version whose status is 1083 * being checked, or <code>-1</code>. 1084 * @param height the height of the scaled version whose status 1085 * is being checked, or <code>-1</code>. 1086 * @param observer the <code>ImageObserver</code> object to be 1087 * notified as the image is being prepared. 1088 * @return the bitwise inclusive <strong>OR</strong> of the 1089 * <code>ImageObserver</code> flags for the 1090 * image data that is currently available. 1091 * @see java.awt.Toolkit#prepareImage(java.awt.Image, 1092 * int, int, java.awt.image.ImageObserver) 1093 * @see java.awt.Component#checkImage(java.awt.Image, 1094 * java.awt.image.ImageObserver) 1095 * @see java.awt.Component#checkImage(java.awt.Image, 1096 * int, int, java.awt.image.ImageObserver) 1097 * @see java.awt.image.ImageObserver 1098 */ 1099 public abstract int checkImage(Image image, int width, int height, 1100 ImageObserver observer); 1101 1102 /** 1103 * Creates an image with the specified image producer. 1104 * @param producer the image producer to be used. 1105 * @return an image with the specified image producer. 1106 * @see java.awt.Image 1107 * @see java.awt.image.ImageProducer 1108 * @see java.awt.Component#createImage(java.awt.image.ImageProducer) 1109 */ 1110 public abstract Image createImage(ImageProducer producer); 1111 1112 /** 1113 * Creates an image which decodes the image stored in the specified 1114 * byte array. 1115 * <p> 1116 * The data must be in some image format, such as GIF or JPEG, 1117 * that is supported by this toolkit. 1118 * @param imagedata an array of bytes, representing 1119 * image data in a supported image format. 1120 * @return an image. 1121 * @since JDK1.1 1122 */ 1123 public Image createImage(byte[] imagedata) { 1124 return createImage(imagedata, 0, imagedata.length); 1125 } 1126 1127 /** 1128 * Creates an image which decodes the image stored in the specified 1129 * byte array, and at the specified offset and length. 1130 * The data must be in some image format, such as GIF or JPEG, 1131 * that is supported by this toolkit. 1132 * @param imagedata an array of bytes, representing 1133 * image data in a supported image format. 1134 * @param imageoffset the offset of the beginning 1135 * of the data in the array. 1136 * @param imagelength the length of the data in the array. 1137 * @return an image. 1138 * @since JDK1.1 1139 */ 1140 public abstract Image createImage(byte[] imagedata, 1141 int imageoffset, 1142 int imagelength); 1143 1144 /** 1145 * Gets a <code>PrintJob</code> object which is the result of initiating 1146 * a print operation on the toolkit's platform. 1147 * <p> 1148 * Each actual implementation of this method should first check if there 1149 * is a security manager installed. If there is, the method should call 1150 * the security manager's <code>checkPrintJobAccess</code> method to 1151 * ensure initiation of a print operation is allowed. If the default 1152 * implementation of <code>checkPrintJobAccess</code> is used (that is, 1153 * that method is not overriden), then this results in a call to the 1154 * security manager's <code>checkPermission</code> method with a <code> 1155 * RuntimePermission("queuePrintJob")</code> permission. 1156 * 1157 * @param frame the parent of the print dialog. May not be null. 1158 * @param jobtitle the title of the PrintJob. A null title is equivalent 1159 * to "". 1160 * @param props a Properties object containing zero or more properties. 1161 * Properties are not standardized and are not consistent across 1162 * implementations. Because of this, PrintJobs which require job 1163 * and page control should use the version of this function which 1164 * takes JobAttributes and PageAttributes objects. This object 1165 * may be updated to reflect the user's job choices on exit. May 1166 * be null. 1167 * @return a <code>PrintJob</code> object, or <code>null</code> if the 1168 * user cancelled the print job. 1169 * @throws NullPointerException if frame is null 1170 * @throws SecurityException if this thread is not allowed to initiate a 1171 * print job request 1172 * @see java.awt.GraphicsEnvironment#isHeadless 1173 * @see java.awt.PrintJob 1174 * @see java.lang.RuntimePermission 1175 * @since JDK1.1 1176 */ 1177 public abstract PrintJob getPrintJob(Frame frame, String jobtitle, 1178 Properties props); 1179 1180 /** 1181 * Gets a <code>PrintJob</code> object which is the result of initiating 1182 * a print operation on the toolkit's platform. 1183 * <p> 1184 * Each actual implementation of this method should first check if there 1185 * is a security manager installed. If there is, the method should call 1186 * the security manager's <code>checkPrintJobAccess</code> method to 1187 * ensure initiation of a print operation is allowed. If the default 1188 * implementation of <code>checkPrintJobAccess</code> is used (that is, 1189 * that method is not overriden), then this results in a call to the 1190 * security manager's <code>checkPermission</code> method with a <code> 1191 * RuntimePermission("queuePrintJob")</code> permission. 1192 * 1193 * @param frame the parent of the print dialog. May not be null. 1194 * @param jobtitle the title of the PrintJob. A null title is equivalent 1195 * to "". 1196 * @param jobAttributes a set of job attributes which will control the 1197 * PrintJob. The attributes will be updated to reflect the user's 1198 * choices as outlined in the JobAttributes documentation. May be 1199 * null. 1200 * @param pageAttributes a set of page attributes which will control the 1201 * PrintJob. The attributes will be applied to every page in the 1202 * job. The attributes will be updated to reflect the user's 1203 * choices as outlined in the PageAttributes documentation. May be 1204 * null. 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 1208 * @throws IllegalArgumentException if pageAttributes specifies differing 1209 * cross feed and feed resolutions. Also if this thread has 1210 * access to the file system and jobAttributes specifies 1211 * print to file, and the specified destination file exists but 1212 * is a directory rather than a regular file, does not exist but 1213 * cannot be created, or cannot be opened for any other reason. 1214 * However in the case of print to file, if a dialog is also 1215 * requested to be displayed then the user will be given an 1216 * opportunity to select a file and proceed with printing. 1217 * The dialog will ensure that the selected output file 1218 * is valid before returning from this method. 1219 * @throws SecurityException if this thread is not allowed to initiate a 1220 * print job request, or if jobAttributes specifies print to file, 1221 * and this thread is not allowed to access the file system 1222 * @see java.awt.PrintJob 1223 * @see java.awt.GraphicsEnvironment#isHeadless 1224 * @see java.lang.RuntimePermission 1225 * @see java.awt.JobAttributes 1226 * @see java.awt.PageAttributes 1227 * @since 1.3 1228 */ 1229 public PrintJob getPrintJob(Frame frame, String jobtitle, 1230 JobAttributes jobAttributes, 1231 PageAttributes pageAttributes) { 1232 // Override to add printing support with new job/page control classes 1233 1234 if (this != Toolkit.getDefaultToolkit()) { 1235 return Toolkit.getDefaultToolkit().getPrintJob(frame, jobtitle, 1236 jobAttributes, 1237 pageAttributes); 1238 } else { 1239 return getPrintJob(frame, jobtitle, null); 1240 } 1241 } 1242 1243 /** 1244 * Emits an audio beep. 1245 * @since JDK1.1 1246 */ 1247 public abstract void beep(); 1248 1249 /** 1250 * Gets the singleton instance of the system Clipboard which interfaces 1251 * with clipboard facilities provided by the native platform. This 1252 * clipboard enables data transfer between Java programs and native 1253 * applications which use native clipboard facilities. 1254 * <p> 1255 * In addition to any and all formats specified in the flavormap.properties 1256 * file, or other file specified by the <code>AWT.DnD.flavorMapFileURL 1257 * </code> Toolkit property, text returned by the system Clipboard's <code> 1258 * getTransferData()</code> method is available in the following flavors: 1259 * <ul> 1260 * <li>DataFlavor.stringFlavor</li> 1261 * <li>DataFlavor.plainTextFlavor (<b>deprecated</b>)</li> 1262 * </ul> 1263 * As with <code>java.awt.datatransfer.StringSelection</code>, if the 1264 * requested flavor is <code>DataFlavor.plainTextFlavor</code>, or an 1265 * equivalent flavor, a Reader is returned. <b>Note:</b> The behavior of 1266 * the system Clipboard's <code>getTransferData()</code> method for <code> 1267 * DataFlavor.plainTextFlavor</code>, and equivalent DataFlavors, is 1268 * inconsistent with the definition of <code>DataFlavor.plainTextFlavor 1269 * </code>. Because of this, support for <code> 1270 * DataFlavor.plainTextFlavor</code>, and equivalent flavors, is 1271 * <b>deprecated</b>. 1272 * <p> 1273 * Each actual implementation of this method should first check if there 1274 * is a security manager installed. If there is, the method should call 1275 * the security manager's <code>checkSystemClipboardAccess</code> method 1276 * to ensure it's ok to to access the system clipboard. If the default 1277 * implementation of <code>checkSystemClipboardAccess</code> is used (that 1278 * is, that method is not overriden), then this results in a call to the 1279 * security manager's <code>checkPermission</code> method with an <code> 1280 * AWTPermission("accessClipboard")</code> permission. 1281 * 1282 * @return the system Clipboard 1283 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 1284 * returns true 1285 * @see java.awt.GraphicsEnvironment#isHeadless 1286 * @see java.awt.datatransfer.Clipboard 1287 * @see java.awt.datatransfer.StringSelection 1288 * @see java.awt.datatransfer.DataFlavor#stringFlavor 1289 * @see java.awt.datatransfer.DataFlavor#plainTextFlavor 1290 * @see java.io.Reader 1291 * @see java.awt.AWTPermission 1292 * @since JDK1.1 1293 */ 1294 public abstract Clipboard getSystemClipboard() 1295 throws HeadlessException; 1296 1297 /** 1298 * Gets the singleton instance of the system selection as a 1299 * <code>Clipboard</code> object. This allows an application to read and 1300 * modify the current, system-wide selection. 1301 * <p> 1302 * An application is responsible for updating the system selection whenever 1303 * the user selects text, using either the mouse or the keyboard. 1304 * Typically, this is implemented by installing a 1305 * <code>FocusListener</code> on all <code>Component</code>s which support 1306 * text selection, and, between <code>FOCUS_GAINED</code> and 1307 * <code>FOCUS_LOST</code> events delivered to that <code>Component</code>, 1308 * updating the system selection <code>Clipboard</code> when the selection 1309 * changes inside the <code>Component</code>. Properly updating the system 1310 * selection ensures that a Java application will interact correctly with 1311 * native applications and other Java applications running simultaneously 1312 * on the system. Note that <code>java.awt.TextComponent</code> and 1313 * <code>javax.swing.text.JTextComponent</code> already adhere to this 1314 * policy. When using these classes, and their subclasses, developers need 1315 * not write any additional code. 1316 * <p> 1317 * Some platforms do not support a system selection <code>Clipboard</code>. 1318 * On those platforms, this method will return <code>null</code>. In such a 1319 * case, an application is absolved from its responsibility to update the 1320 * system selection <code>Clipboard</code> as described above. 1321 * <p> 1322 * Each actual implementation of this method should first check if there 1323 * is a <code>SecurityManager</code> installed. If there is, the method 1324 * should call the <code>SecurityManager</code>'s 1325 * <code>checkSystemClipboardAccess</code> method to ensure that client 1326 * code has access the system selection. If the default implementation of 1327 * <code>checkSystemClipboardAccess</code> is used (that is, if the method 1328 * is not overridden), then this results in a call to the 1329 * <code>SecurityManager</code>'s <code>checkPermission</code> method with 1330 * an <code>AWTPermission("accessClipboard")</code> permission. 1331 * 1332 * @return the system selection as a <code>Clipboard</code>, or 1333 * <code>null</code> if the native platform does not support a 1334 * system selection <code>Clipboard</code> 1335 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 1336 * returns true 1337 * 1338 * @see java.awt.datatransfer.Clipboard 1339 * @see java.awt.event.FocusListener 1340 * @see java.awt.event.FocusEvent#FOCUS_GAINED 1341 * @see java.awt.event.FocusEvent#FOCUS_LOST 1342 * @see TextComponent 1343 * @see javax.swing.text.JTextComponent 1344 * @see AWTPermission 1345 * @see GraphicsEnvironment#isHeadless 1346 * @since 1.4 1347 */ 1348 public Clipboard getSystemSelection() throws HeadlessException { 1349 GraphicsEnvironment.checkHeadless(); 1350 1351 if (this != Toolkit.getDefaultToolkit()) { 1352 return Toolkit.getDefaultToolkit().getSystemSelection(); 1353 } else { 1354 GraphicsEnvironment.checkHeadless(); 1355 return null; 1356 } 1357 } 1358 1359 /** 1360 * Determines which modifier key is the appropriate accelerator 1361 * key for menu shortcuts. 1362 * <p> 1363 * Menu shortcuts, which are embodied in the 1364 * <code>MenuShortcut</code> class, are handled by the 1365 * <code>MenuBar</code> class. 1366 * <p> 1367 * By default, this method returns <code>Event.CTRL_MASK</code>. 1368 * Toolkit implementations should override this method if the 1369 * <b>Control</b> key isn't the correct key for accelerators. 1370 * @return the modifier mask on the <code>Event</code> class 1371 * that is used for menu shortcuts on this toolkit. 1372 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 1373 * returns true 1374 * @see java.awt.GraphicsEnvironment#isHeadless 1375 * @see java.awt.MenuBar 1376 * @see java.awt.MenuShortcut 1377 * @since JDK1.1 1378 */ 1379 public int getMenuShortcutKeyMask() throws HeadlessException { 1380 GraphicsEnvironment.checkHeadless(); 1381 1382 return Event.CTRL_MASK; 1383 } 1384 1385 /** 1386 * Returns whether the given locking key on the keyboard is currently in 1387 * its "on" state. 1388 * Valid key codes are 1389 * {@link java.awt.event.KeyEvent#VK_CAPS_LOCK VK_CAPS_LOCK}, 1390 * {@link java.awt.event.KeyEvent#VK_NUM_LOCK VK_NUM_LOCK}, 1391 * {@link java.awt.event.KeyEvent#VK_SCROLL_LOCK VK_SCROLL_LOCK}, and 1392 * {@link java.awt.event.KeyEvent#VK_KANA_LOCK VK_KANA_LOCK}. 1393 * 1394 * @exception java.lang.IllegalArgumentException if <code>keyCode</code> 1395 * is not one of the valid key codes 1396 * @exception java.lang.UnsupportedOperationException if the host system doesn't 1397 * allow getting the state of this key programmatically, or if the keyboard 1398 * doesn't have this key 1399 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 1400 * returns true 1401 * @see java.awt.GraphicsEnvironment#isHeadless 1402 * @since 1.3 1403 */ 1404 public boolean getLockingKeyState(int keyCode) 1405 throws UnsupportedOperationException 1406 { 1407 GraphicsEnvironment.checkHeadless(); 1408 1409 if (! (keyCode == KeyEvent.VK_CAPS_LOCK || keyCode == KeyEvent.VK_NUM_LOCK || 1410 keyCode == KeyEvent.VK_SCROLL_LOCK || keyCode == KeyEvent.VK_KANA_LOCK)) { 1411 throw new IllegalArgumentException("invalid key for Toolkit.getLockingKeyState"); 1412 } 1413 throw new UnsupportedOperationException("Toolkit.getLockingKeyState"); 1414 } 1415 1416 /** 1417 * Sets the state of the given locking key on the keyboard. 1418 * Valid key codes are 1419 * {@link java.awt.event.KeyEvent#VK_CAPS_LOCK VK_CAPS_LOCK}, 1420 * {@link java.awt.event.KeyEvent#VK_NUM_LOCK VK_NUM_LOCK}, 1421 * {@link java.awt.event.KeyEvent#VK_SCROLL_LOCK VK_SCROLL_LOCK}, and 1422 * {@link java.awt.event.KeyEvent#VK_KANA_LOCK VK_KANA_LOCK}. 1423 * <p> 1424 * Depending on the platform, setting the state of a locking key may 1425 * involve event processing and therefore may not be immediately 1426 * observable through getLockingKeyState. 1427 * 1428 * @exception java.lang.IllegalArgumentException if <code>keyCode</code> 1429 * is not one of the valid key codes 1430 * @exception java.lang.UnsupportedOperationException if the host system doesn't 1431 * allow setting the state of this key programmatically, or if the keyboard 1432 * doesn't have this key 1433 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 1434 * returns true 1435 * @see java.awt.GraphicsEnvironment#isHeadless 1436 * @since 1.3 1437 */ 1438 public void setLockingKeyState(int keyCode, boolean on) 1439 throws UnsupportedOperationException 1440 { 1441 GraphicsEnvironment.checkHeadless(); 1442 1443 if (! (keyCode == KeyEvent.VK_CAPS_LOCK || keyCode == KeyEvent.VK_NUM_LOCK || 1444 keyCode == KeyEvent.VK_SCROLL_LOCK || keyCode == KeyEvent.VK_KANA_LOCK)) { 1445 throw new IllegalArgumentException("invalid key for Toolkit.setLockingKeyState"); 1446 } 1447 throw new UnsupportedOperationException("Toolkit.setLockingKeyState"); 1448 } 1449 1450 /** 1451 * Give native peers the ability to query the native container 1452 * given a native component (eg the direct parent may be lightweight). 1453 */ 1454 protected static Container getNativeContainer(Component c) { 1455 return c.getNativeContainer(); 1456 } 1457 1458 /** 1459 * Creates a new custom cursor object. 1460 * If the image to display is invalid, the cursor will be hidden (made 1461 * completely transparent), and the hotspot will be set to (0, 0). 1462 * 1463 * <p>Note that multi-frame images are invalid and may cause this 1464 * method to hang. 1465 * 1466 * @param cursor the image to display when the cursor is actived 1467 * @param hotSpot the X and Y of the large cursor's hot spot; the 1468 * hotSpot values must be less than the Dimension returned by 1469 * <code>getBestCursorSize</code> 1470 * @param name a localized description of the cursor, for Java Accessibility use 1471 * @exception IndexOutOfBoundsException if the hotSpot values are outside 1472 * the bounds of the cursor 1473 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 1474 * returns true 1475 * @see java.awt.GraphicsEnvironment#isHeadless 1476 * @since 1.2 1477 */ 1478 public Cursor createCustomCursor(Image cursor, Point hotSpot, String name) 1479 throws IndexOutOfBoundsException, HeadlessException 1480 { 1481 // Override to implement custom cursor support. 1482 if (this != Toolkit.getDefaultToolkit()) { 1483 return Toolkit.getDefaultToolkit(). 1484 createCustomCursor(cursor, hotSpot, name); 1485 } else { 1486 return new Cursor(Cursor.DEFAULT_CURSOR); 1487 } 1488 } 1489 1490 /** 1491 * Returns the supported cursor dimension which is closest to the desired 1492 * sizes. Systems which only support a single cursor size will return that 1493 * size regardless of the desired sizes. Systems which don't support custom 1494 * cursors will return a dimension of 0, 0. <p> 1495 * Note: if an image is used whose dimensions don't match a supported size 1496 * (as returned by this method), the Toolkit implementation will attempt to 1497 * resize the image to a supported size. 1498 * Since converting low-resolution images is difficult, 1499 * no guarantees are made as to the quality of a cursor image which isn't a 1500 * supported size. It is therefore recommended that this method 1501 * be called and an appropriate image used so no image conversion is made. 1502 * 1503 * @param preferredWidth the preferred cursor width the component would like 1504 * to use. 1505 * @param preferredHeight the preferred cursor height the component would like 1506 * to use. 1507 * @return the closest matching supported cursor size, or a dimension of 0,0 if 1508 * the Toolkit implementation doesn't support custom cursors. 1509 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 1510 * returns true 1511 * @see java.awt.GraphicsEnvironment#isHeadless 1512 * @since 1.2 1513 */ 1514 public Dimension getBestCursorSize(int preferredWidth, 1515 int preferredHeight) throws HeadlessException { 1516 GraphicsEnvironment.checkHeadless(); 1517 1518 // Override to implement custom cursor support. 1519 if (this != Toolkit.getDefaultToolkit()) { 1520 return Toolkit.getDefaultToolkit(). 1521 getBestCursorSize(preferredWidth, preferredHeight); 1522 } else { 1523 return new Dimension(0, 0); 1524 } 1525 } 1526 1527 /** 1528 * Returns the maximum number of colors the Toolkit supports in a custom cursor 1529 * palette.<p> 1530 * Note: if an image is used which has more colors in its palette than 1531 * the supported maximum, the Toolkit implementation will attempt to flatten the 1532 * palette to the maximum. Since converting low-resolution images is difficult, 1533 * no guarantees are made as to the quality of a cursor image which has more 1534 * colors than the system supports. It is therefore recommended that this method 1535 * be called and an appropriate image used so no image conversion is made. 1536 * 1537 * @return the maximum number of colors, or zero if custom cursors are not 1538 * supported by this Toolkit implementation. 1539 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 1540 * returns true 1541 * @see java.awt.GraphicsEnvironment#isHeadless 1542 * @since 1.2 1543 */ 1544 public int getMaximumCursorColors() throws HeadlessException { 1545 GraphicsEnvironment.checkHeadless(); 1546 1547 // Override to implement custom cursor support. 1548 if (this != Toolkit.getDefaultToolkit()) { 1549 return Toolkit.getDefaultToolkit().getMaximumCursorColors(); 1550 } else { 1551 return 0; 1552 } 1553 } 1554 1555 /** 1556 * Returns whether Toolkit supports this state for 1557 * <code>Frame</code>s. This method tells whether the <em>UI 1558 * concept</em> of, say, maximization or iconification is 1559 * supported. It will always return false for "compound" states 1560 * like <code>Frame.ICONIFIED|Frame.MAXIMIZED_VERT</code>. 1561 * In other words, the rule of thumb is that only queries with a 1562 * single frame state constant as an argument are meaningful. 1563 * <p>Note that supporting a given concept is a platform- 1564 * dependent feature. Due to native limitations the Toolkit 1565 * object may report a particular state as supported, however at 1566 * the same time the Toolkit object will be unable to apply the 1567 * state to a given frame. This circumstance has two following 1568 * consequences: 1569 * <ul> 1570 * <li>Only the return value of {@code false} for the present 1571 * method actually indicates that the given state is not 1572 * supported. If the method returns {@code true} the given state 1573 * may still be unsupported and/or unavailable for a particular 1574 * frame. 1575 * <li>The developer should consider examining the value of the 1576 * {@link java.awt.event.WindowEvent#getNewState} method of the 1577 * {@code WindowEvent} received through the {@link 1578 * java.awt.event.WindowStateListener}, rather than assuming 1579 * that the state given to the {@code setExtendedState()} method 1580 * will be definitely applied. For more information see the 1581 * documentation for the {@link Frame#setExtendedState} method. 1582 * </ul> 1583 * 1584 * @param state one of named frame state constants. 1585 * @return <code>true</code> is this frame state is supported by 1586 * this Toolkit implementation, <code>false</code> otherwise. 1587 * @exception HeadlessException 1588 * if <code>GraphicsEnvironment.isHeadless()</code> 1589 * returns <code>true</code>. 1590 * @see java.awt.Window#addWindowStateListener 1591 * @since 1.4 1592 */ 1593 public boolean isFrameStateSupported(int state) 1594 throws HeadlessException 1595 { 1596 GraphicsEnvironment.checkHeadless(); 1597 1598 if (this != Toolkit.getDefaultToolkit()) { 1599 return Toolkit.getDefaultToolkit(). 1600 isFrameStateSupported(state); 1601 } else { 1602 return (state == Frame.NORMAL); // others are not guaranteed 1603 } 1604 } 1605 1606 /** 1607 * Support for I18N: any visible strings should be stored in 1608 * sun.awt.resources.awt.properties. The ResourceBundle is stored 1609 * here, so that only one copy is maintained. 1610 */ 1611 private static ResourceBundle resources; 1612 1613 /** 1614 * Initialize JNI field and method ids 1615 */ 1616 private static native void initIDs(); 1617 1618 /** 1619 * WARNING: This is a temporary workaround for a problem in the 1620 * way the AWT loads native libraries. A number of classes in the 1621 * AWT package have a native method, initIDs(), which initializes 1622 * the JNI field and method ids used in the native portion of 1623 * their implementation. 1624 * 1625 * Since the use and storage of these ids is done by the 1626 * implementation libraries, the implementation of these method is 1627 * provided by the particular AWT implementations (for example, 1628 * "Toolkit"s/Peer), such as Motif, Microsoft Windows, or Tiny. The 1629 * problem is that this means that the native libraries must be 1630 * loaded by the java.* classes, which do not necessarily know the 1631 * names of the libraries to load. A better way of doing this 1632 * would be to provide a separate library which defines java.awt.* 1633 * initIDs, and exports the relevant symbols out to the 1634 * implementation libraries. 1635 * 1636 * For now, we know it's done by the implementation, and we assume 1637 * that the name of the library is "awt". -br. 1638 * 1639 * If you change loadLibraries(), please add the change to 1640 * java.awt.image.ColorModel.loadLibraries(). Unfortunately, 1641 * classes can be loaded in java.awt.image that depend on 1642 * libawt and there is no way to call Toolkit.loadLibraries() 1643 * directly. -hung 1644 */ 1645 private static boolean loaded = false; 1646 static void loadLibraries() { 1647 if (!loaded) { 1648 java.security.AccessController.doPrivileged( 1649 new java.security.PrivilegedAction<Void>() { 1650 public Void run() { 1651 System.loadLibrary("awt"); 1652 return null; 1653 } 1654 }); 1655 loaded = true; 1656 } 1657 } 1658 1659 static { 1660 java.security.AccessController.doPrivileged( 1661 new java.security.PrivilegedAction<Void>() { 1662 public Void run() { 1663 try { 1664 resources = 1665 ResourceBundle.getBundle("sun.awt.resources.awt", 1666 CoreResourceBundleControl.getRBControlInstance()); 1667 } catch (MissingResourceException e) { 1668 // No resource file; defaults will be used. 1669 } 1670 return null; 1671 } 1672 }); 1673 1674 // ensure that the proper libraries are loaded 1675 loadLibraries(); 1676 initAssistiveTechnologies(); 1677 if (!GraphicsEnvironment.isHeadless()) { 1678 initIDs(); 1679 } 1680 } 1681 1682 /** 1683 * Gets a property with the specified key and default. 1684 * This method returns defaultValue if the property is not found. 1685 */ 1686 public static String getProperty(String key, String defaultValue) { 1687 if (resources != null) { 1688 try { 1689 return resources.getString(key); 1690 } 1691 catch (MissingResourceException e) {} 1692 } 1693 1694 return defaultValue; 1695 } 1696 1697 /** 1698 * Get the application's or applet's EventQueue instance. 1699 * Depending on the Toolkit implementation, different EventQueues 1700 * may be returned for different applets. Applets should 1701 * therefore not assume that the EventQueue instance returned 1702 * by this method will be shared by other applets or the system. 1703 * 1704 * <p>First, if there is a security manager, its 1705 * <code>checkAwtEventQueueAccess</code> 1706 * method is called. 1707 * If the default implementation of <code>checkAwtEventQueueAccess</code> 1708 * is used (that is, that method is not overriden), then this results in 1709 * a call to the security manager's <code>checkPermission</code> method 1710 * with an <code>AWTPermission("accessEventQueue")</code> permission. 1711 * 1712 * @return the <code>EventQueue</code> object 1713 * @throws SecurityException 1714 * if a security manager exists and its <code>{@link 1715 * java.lang.SecurityManager#checkAwtEventQueueAccess}</code> 1716 * method denies access to the <code>EventQueue</code> 1717 * @see java.awt.AWTPermission 1718 */ 1719 public final EventQueue getSystemEventQueue() { 1720 SecurityManager security = System.getSecurityManager(); 1721 if (security != null) { 1722 security.checkAwtEventQueueAccess(); 1723 } 1724 return getSystemEventQueueImpl(); 1725 } 1726 1727 /** 1728 * Gets the application's or applet's <code>EventQueue</code> 1729 * instance, without checking access. For security reasons, 1730 * this can only be called from a <code>Toolkit</code> subclass. 1731 * @return the <code>EventQueue</code> object 1732 */ 1733 protected abstract EventQueue getSystemEventQueueImpl(); 1734 1735 /* Accessor method for use by AWT package routines. */ 1736 static EventQueue getEventQueue() { 1737 return getDefaultToolkit().getSystemEventQueueImpl(); 1738 } 1739 1740 /** 1741 * Creates the peer for a DragSourceContext. 1742 * Always throws InvalidDndOperationException if 1743 * GraphicsEnvironment.isHeadless() returns true. 1744 * @see java.awt.GraphicsEnvironment#isHeadless 1745 */ 1746 public abstract DragSourceContextPeer createDragSourceContextPeer(DragGestureEvent dge) throws InvalidDnDOperationException; 1747 1748 /** 1749 * Creates a concrete, platform dependent, subclass of the abstract 1750 * DragGestureRecognizer class requested, and associates it with the 1751 * DragSource, Component and DragGestureListener specified. 1752 * 1753 * subclasses should override this to provide their own implementation 1754 * 1755 * @param abstractRecognizerClass The abstract class of the required recognizer 1756 * @param ds The DragSource 1757 * @param c The Component target for the DragGestureRecognizer 1758 * @param srcActions The actions permitted for the gesture 1759 * @param dgl The DragGestureListener 1760 * 1761 * @return the new object or null. Always returns null if 1762 * GraphicsEnvironment.isHeadless() returns true. 1763 * @see java.awt.GraphicsEnvironment#isHeadless 1764 */ 1765 public <T extends DragGestureRecognizer> T 1766 createDragGestureRecognizer(Class<T> abstractRecognizerClass, 1767 DragSource ds, Component c, int srcActions, 1768 DragGestureListener dgl) 1769 { 1770 return null; 1771 } 1772 1773 /** 1774 * Obtains a value for the specified desktop property. 1775 * 1776 * A desktop property is a uniquely named value for a resource that 1777 * is Toolkit global in nature. Usually it also is an abstract 1778 * representation for an underlying platform dependent desktop setting. 1779 * For more information on desktop properties supported by the AWT see 1780 * <a href="doc-files/DesktopProperties.html">AWT Desktop Properties</a>. 1781 */ 1782 public final synchronized Object getDesktopProperty(String propertyName) { 1783 // This is a workaround for headless toolkits. It would be 1784 // better to override this method but it is declared final. 1785 // "this instanceof" syntax defeats polymorphism. 1786 // --mm, 03/03/00 1787 if (this instanceof HeadlessToolkit) { 1788 return ((HeadlessToolkit)this).getUnderlyingToolkit() 1789 .getDesktopProperty(propertyName); 1790 } 1791 1792 if (desktopProperties.isEmpty()) { 1793 initializeDesktopProperties(); 1794 } 1795 1796 Object value; 1797 1798 // This property should never be cached 1799 if (propertyName.equals("awt.dynamicLayoutSupported")) { 1800 value = lazilyLoadDesktopProperty(propertyName); 1801 return value; 1802 } 1803 1804 value = desktopProperties.get(propertyName); 1805 1806 if (value == null) { 1807 value = lazilyLoadDesktopProperty(propertyName); 1808 1809 if (value != null) { 1810 setDesktopProperty(propertyName, value); 1811 } 1812 } 1813 1814 /* for property "awt.font.desktophints" */ 1815 if (value instanceof RenderingHints) { 1816 value = ((RenderingHints)value).clone(); 1817 } 1818 1819 return value; 1820 } 1821 1822 /** 1823 * Sets the named desktop property to the specified value and fires a 1824 * property change event to notify any listeners that the value has changed. 1825 */ 1826 protected final void setDesktopProperty(String name, Object newValue) { 1827 // This is a workaround for headless toolkits. It would be 1828 // better to override this method but it is declared final. 1829 // "this instanceof" syntax defeats polymorphism. 1830 // --mm, 03/03/00 1831 if (this instanceof HeadlessToolkit) { 1832 ((HeadlessToolkit)this).getUnderlyingToolkit() 1833 .setDesktopProperty(name, newValue); 1834 return; 1835 } 1836 Object oldValue; 1837 1838 synchronized (this) { 1839 oldValue = desktopProperties.get(name); 1840 desktopProperties.put(name, newValue); 1841 } 1842 1843 // Don't fire change event if old and new values are null. 1844 // It helps to avoid recursive resending of WM_THEMECHANGED 1845 if (oldValue != null || newValue != null) { 1846 desktopPropsSupport.firePropertyChange(name, oldValue, newValue); 1847 } 1848 } 1849 1850 /** 1851 * an opportunity to lazily evaluate desktop property values. 1852 */ 1853 protected Object lazilyLoadDesktopProperty(String name) { 1854 return null; 1855 } 1856 1857 /** 1858 * initializeDesktopProperties 1859 */ 1860 protected void initializeDesktopProperties() { 1861 } 1862 1863 /** 1864 * Adds the specified property change listener for the named desktop 1865 * property. When a {@link java.beans.PropertyChangeListenerProxy} object is added, 1866 * its property name is ignored, and the wrapped listener is added. 1867 * If {@code name} is {@code null} or {@code pcl} is {@code null}, 1868 * no exception is thrown and no action is performed. 1869 * 1870 * @param name The name of the property to listen for 1871 * @param pcl The property change listener 1872 * @see PropertyChangeSupport#addPropertyChangeListener(String, 1873 PropertyChangeListener) 1874 * @since 1.2 1875 */ 1876 public void addPropertyChangeListener(String name, PropertyChangeListener pcl) { 1877 desktopPropsSupport.addPropertyChangeListener(name, pcl); 1878 } 1879 1880 /** 1881 * Removes the specified property change listener for the named 1882 * desktop property. When a {@link java.beans.PropertyChangeListenerProxy} object 1883 * is removed, its property name is ignored, and 1884 * the wrapped listener is removed. 1885 * If {@code name} is {@code null} or {@code pcl} is {@code null}, 1886 * no exception is thrown and no action is performed. 1887 * 1888 * @param name The name of the property to remove 1889 * @param pcl The property change listener 1890 * @see PropertyChangeSupport#removePropertyChangeListener(String, 1891 PropertyChangeListener) 1892 * @since 1.2 1893 */ 1894 public void removePropertyChangeListener(String name, PropertyChangeListener pcl) { 1895 desktopPropsSupport.removePropertyChangeListener(name, pcl); 1896 } 1897 1898 /** 1899 * Returns an array of all the property change listeners 1900 * registered on this toolkit. The returned array 1901 * contains {@link java.beans.PropertyChangeListenerProxy} objects 1902 * that associate listeners with the names of desktop properties. 1903 * 1904 * @return all of this toolkit's {@link PropertyChangeListener} 1905 * objects wrapped in {@code java.beans.PropertyChangeListenerProxy} objects 1906 * or an empty array if no listeners are added 1907 * 1908 * @see PropertyChangeSupport#getPropertyChangeListeners() 1909 * @since 1.4 1910 */ 1911 public PropertyChangeListener[] getPropertyChangeListeners() { 1912 return desktopPropsSupport.getPropertyChangeListeners(); 1913 } 1914 1915 /** 1916 * Returns an array of all property change listeners 1917 * associated with the specified name of a desktop property. 1918 * 1919 * @param propertyName the named property 1920 * @return all of the {@code PropertyChangeListener} objects 1921 * associated with the specified name of a desktop property 1922 * or an empty array if no such listeners are added 1923 * 1924 * @see PropertyChangeSupport#getPropertyChangeListeners(String) 1925 * @since 1.4 1926 */ 1927 public PropertyChangeListener[] getPropertyChangeListeners(String propertyName) { 1928 return desktopPropsSupport.getPropertyChangeListeners(propertyName); 1929 } 1930 1931 protected final Map<String,Object> desktopProperties = 1932 new HashMap<String,Object>(); 1933 protected final PropertyChangeSupport desktopPropsSupport = 1934 Toolkit.createPropertyChangeSupport(this); 1935 1936 /** 1937 * Returns whether the always-on-top mode is supported by this toolkit. 1938 * To detect whether the always-on-top mode is supported for a 1939 * particular Window, use {@link Window#isAlwaysOnTopSupported}. 1940 * @return <code>true</code>, if current toolkit supports the always-on-top mode, 1941 * otherwise returns <code>false</code> 1942 * @see Window#isAlwaysOnTopSupported 1943 * @see Window#setAlwaysOnTop(boolean) 1944 * @since 1.6 1945 */ 1946 public boolean isAlwaysOnTopSupported() { 1947 return true; 1948 } 1949 1950 /** 1951 * Returns whether the given modality type is supported by this toolkit. If 1952 * a dialog with unsupported modality type is created, then 1953 * <code>Dialog.ModalityType.MODELESS</code> is used instead. 1954 * 1955 * @param modalityType modality type to be checked for support by this toolkit 1956 * 1957 * @return <code>true</code>, if current toolkit supports given modality 1958 * type, <code>false</code> otherwise 1959 * 1960 * @see java.awt.Dialog.ModalityType 1961 * @see java.awt.Dialog#getModalityType 1962 * @see java.awt.Dialog#setModalityType 1963 * 1964 * @since 1.6 1965 */ 1966 public abstract boolean isModalityTypeSupported(Dialog.ModalityType modalityType); 1967 1968 /** 1969 * Returns whether the given modal exclusion type is supported by this 1970 * toolkit. If an unsupported modal exclusion type property is set on a window, 1971 * then <code>Dialog.ModalExclusionType.NO_EXCLUDE</code> is used instead. 1972 * 1973 * @param modalExclusionType modal exclusion type to be checked for support by this toolkit 1974 * 1975 * @return <code>true</code>, if current toolkit supports given modal exclusion 1976 * type, <code>false</code> otherwise 1977 * 1978 * @see java.awt.Dialog.ModalExclusionType 1979 * @see java.awt.Window#getModalExclusionType 1980 * @see java.awt.Window#setModalExclusionType 1981 * 1982 * @since 1.6 1983 */ 1984 public abstract boolean isModalExclusionTypeSupported(Dialog.ModalExclusionType modalExclusionType); 1985 1986 private static final PlatformLogger log = PlatformLogger.getLogger("java.awt.Toolkit"); 1987 1988 private static final int LONG_BITS = 64; 1989 private int[] calls = new int[LONG_BITS]; 1990 private static volatile long enabledOnToolkitMask; 1991 private AWTEventListener eventListener = null; 1992 private WeakHashMap<AWTEventListener, SelectiveAWTEventListener> listener2SelectiveListener = new WeakHashMap<>(); 1993 1994 /* 1995 * Extracts a "pure" AWTEventListener from a AWTEventListenerProxy, 1996 * if the listener is proxied. 1997 */ 1998 static private AWTEventListener deProxyAWTEventListener(AWTEventListener l) 1999 { 2000 AWTEventListener localL = l; 2001 2002 if (localL == null) { 2003 return null; 2004 } 2005 // if user passed in a AWTEventListenerProxy object, extract 2006 // the listener 2007 if (l instanceof AWTEventListenerProxy) { 2008 localL = ((AWTEventListenerProxy)l).getListener(); 2009 } 2010 return localL; 2011 } 2012 2013 /** 2014 * Adds an AWTEventListener to receive all AWTEvents dispatched 2015 * system-wide that conform to the given <code>eventMask</code>. 2016 * <p> 2017 * First, if there is a security manager, its <code>checkPermission</code> 2018 * method is called with an 2019 * <code>AWTPermission("listenToAllAWTEvents")</code> permission. 2020 * This may result in a SecurityException. 2021 * <p> 2022 * <code>eventMask</code> is a bitmask of event types to receive. 2023 * It is constructed by bitwise OR-ing together the event masks 2024 * defined in <code>AWTEvent</code>. 2025 * <p> 2026 * Note: event listener use is not recommended for normal 2027 * application use, but are intended solely to support special 2028 * purpose facilities including support for accessibility, 2029 * event record/playback, and diagnostic tracing. 2030 * 2031 * If listener is null, no exception is thrown and no action is performed. 2032 * 2033 * @param listener the event listener. 2034 * @param eventMask the bitmask of event types to receive 2035 * @throws SecurityException 2036 * if a security manager exists and its 2037 * <code>checkPermission</code> method doesn't allow the operation. 2038 * @see #removeAWTEventListener 2039 * @see #getAWTEventListeners 2040 * @see SecurityManager#checkPermission 2041 * @see java.awt.AWTEvent 2042 * @see java.awt.AWTPermission 2043 * @see java.awt.event.AWTEventListener 2044 * @see java.awt.event.AWTEventListenerProxy 2045 * @since 1.2 2046 */ 2047 public void addAWTEventListener(AWTEventListener listener, long eventMask) { 2048 AWTEventListener localL = deProxyAWTEventListener(listener); 2049 2050 if (localL == null) { 2051 return; 2052 } 2053 SecurityManager security = System.getSecurityManager(); 2054 if (security != null) { 2055 security.checkPermission(SecurityConstants.AWT.ALL_AWT_EVENTS_PERMISSION); 2056 } 2057 synchronized (this) { 2058 SelectiveAWTEventListener selectiveListener = 2059 listener2SelectiveListener.get(localL); 2060 2061 if (selectiveListener == null) { 2062 // Create a new selectiveListener. 2063 selectiveListener = new SelectiveAWTEventListener(localL, 2064 eventMask); 2065 listener2SelectiveListener.put(localL, selectiveListener); 2066 eventListener = ToolkitEventMulticaster.add(eventListener, 2067 selectiveListener); 2068 } 2069 // OR the eventMask into the selectiveListener's event mask. 2070 selectiveListener.orEventMasks(eventMask); 2071 2072 enabledOnToolkitMask |= eventMask; 2073 2074 long mask = eventMask; 2075 for (int i=0; i<LONG_BITS; i++) { 2076 // If no bits are set, break out of loop. 2077 if (mask == 0) { 2078 break; 2079 } 2080 if ((mask & 1L) != 0) { // Always test bit 0. 2081 calls[i]++; 2082 } 2083 mask >>>= 1; // Right shift, fill with zeros on left. 2084 } 2085 } 2086 } 2087 2088 /** 2089 * Removes an AWTEventListener from receiving dispatched AWTEvents. 2090 * <p> 2091 * First, if there is a security manager, its <code>checkPermission</code> 2092 * method is called with an 2093 * <code>AWTPermission("listenToAllAWTEvents")</code> permission. 2094 * This may result in a SecurityException. 2095 * <p> 2096 * Note: event listener use is not recommended for normal 2097 * application use, but are intended solely to support special 2098 * purpose facilities including support for accessibility, 2099 * event record/playback, and diagnostic tracing. 2100 * 2101 * If listener is null, no exception is thrown and no action is performed. 2102 * 2103 * @param listener the event listener. 2104 * @throws SecurityException 2105 * if a security manager exists and its 2106 * <code>checkPermission</code> method doesn't allow the operation. 2107 * @see #addAWTEventListener 2108 * @see #getAWTEventListeners 2109 * @see SecurityManager#checkPermission 2110 * @see java.awt.AWTEvent 2111 * @see java.awt.AWTPermission 2112 * @see java.awt.event.AWTEventListener 2113 * @see java.awt.event.AWTEventListenerProxy 2114 * @since 1.2 2115 */ 2116 public void removeAWTEventListener(AWTEventListener listener) { 2117 AWTEventListener localL = deProxyAWTEventListener(listener); 2118 2119 if (listener == null) { 2120 return; 2121 } 2122 SecurityManager security = System.getSecurityManager(); 2123 if (security != null) { 2124 security.checkPermission(SecurityConstants.AWT.ALL_AWT_EVENTS_PERMISSION); 2125 } 2126 2127 synchronized (this) { 2128 SelectiveAWTEventListener selectiveListener = 2129 listener2SelectiveListener.get(localL); 2130 2131 if (selectiveListener != null) { 2132 listener2SelectiveListener.remove(localL); 2133 int[] listenerCalls = selectiveListener.getCalls(); 2134 for (int i=0; i<LONG_BITS; i++) { 2135 calls[i] -= listenerCalls[i]; 2136 assert calls[i] >= 0: "Negative Listeners count"; 2137 2138 if (calls[i] == 0) { 2139 enabledOnToolkitMask &= ~(1L<<i); 2140 } 2141 } 2142 } 2143 eventListener = ToolkitEventMulticaster.remove(eventListener, 2144 (selectiveListener == null) ? localL : selectiveListener); 2145 } 2146 } 2147 2148 static boolean enabledOnToolkit(long eventMask) { 2149 return (enabledOnToolkitMask & eventMask) != 0; 2150 } 2151 2152 synchronized int countAWTEventListeners(long eventMask) { 2153 if (log.isLoggable(PlatformLogger.FINE)) { 2154 if (eventMask == 0) { 2155 log.fine("Assertion (eventMask != 0) failed"); 2156 } 2157 } 2158 2159 int ci = 0; 2160 for (; eventMask != 0; eventMask >>>= 1, ci++) { 2161 } 2162 ci--; 2163 return calls[ci]; 2164 } 2165 /** 2166 * Returns an array of all the <code>AWTEventListener</code>s 2167 * registered on this toolkit. 2168 * If there is a security manager, its {@code checkPermission} 2169 * method is called with an 2170 * {@code AWTPermission("listenToAllAWTEvents")} permission. 2171 * This may result in a SecurityException. 2172 * Listeners can be returned 2173 * within <code>AWTEventListenerProxy</code> objects, which also contain 2174 * the event mask for the given listener. 2175 * Note that listener objects 2176 * added multiple times appear only once in the returned array. 2177 * 2178 * @return all of the <code>AWTEventListener</code>s or an empty 2179 * array if no listeners are currently registered 2180 * @throws SecurityException 2181 * if a security manager exists and its 2182 * <code>checkPermission</code> method doesn't allow the operation. 2183 * @see #addAWTEventListener 2184 * @see #removeAWTEventListener 2185 * @see SecurityManager#checkPermission 2186 * @see java.awt.AWTEvent 2187 * @see java.awt.AWTPermission 2188 * @see java.awt.event.AWTEventListener 2189 * @see java.awt.event.AWTEventListenerProxy 2190 * @since 1.4 2191 */ 2192 public AWTEventListener[] getAWTEventListeners() { 2193 SecurityManager security = System.getSecurityManager(); 2194 if (security != null) { 2195 security.checkPermission(SecurityConstants.AWT.ALL_AWT_EVENTS_PERMISSION); 2196 } 2197 synchronized (this) { 2198 EventListener[] la = ToolkitEventMulticaster.getListeners(eventListener,AWTEventListener.class); 2199 2200 AWTEventListener[] ret = new AWTEventListener[la.length]; 2201 for (int i = 0; i < la.length; i++) { 2202 SelectiveAWTEventListener sael = (SelectiveAWTEventListener)la[i]; 2203 AWTEventListener tempL = sael.getListener(); 2204 //assert tempL is not an AWTEventListenerProxy - we should 2205 // have weeded them all out 2206 // don't want to wrap a proxy inside a proxy 2207 ret[i] = new AWTEventListenerProxy(sael.getEventMask(), tempL); 2208 } 2209 return ret; 2210 } 2211 } 2212 2213 /** 2214 * Returns an array of all the <code>AWTEventListener</code>s 2215 * registered on this toolkit which listen to all of the event 2216 * types specified in the {@code eventMask} argument. 2217 * If there is a security manager, its {@code checkPermission} 2218 * method is called with an 2219 * {@code AWTPermission("listenToAllAWTEvents")} permission. 2220 * This may result in a SecurityException. 2221 * Listeners can be returned 2222 * within <code>AWTEventListenerProxy</code> objects, which also contain 2223 * the event mask for the given listener. 2224 * Note that listener objects 2225 * added multiple times appear only once in the returned array. 2226 * 2227 * @param eventMask the bitmask of event types to listen for 2228 * @return all of the <code>AWTEventListener</code>s registered 2229 * on this toolkit for the specified 2230 * event types, or an empty array if no such listeners 2231 * are currently registered 2232 * @throws SecurityException 2233 * if a security manager exists and its 2234 * <code>checkPermission</code> method doesn't allow the operation. 2235 * @see #addAWTEventListener 2236 * @see #removeAWTEventListener 2237 * @see SecurityManager#checkPermission 2238 * @see java.awt.AWTEvent 2239 * @see java.awt.AWTPermission 2240 * @see java.awt.event.AWTEventListener 2241 * @see java.awt.event.AWTEventListenerProxy 2242 * @since 1.4 2243 */ 2244 public AWTEventListener[] getAWTEventListeners(long eventMask) { 2245 SecurityManager security = System.getSecurityManager(); 2246 if (security != null) { 2247 security.checkPermission(SecurityConstants.AWT.ALL_AWT_EVENTS_PERMISSION); 2248 } 2249 synchronized (this) { 2250 EventListener[] la = ToolkitEventMulticaster.getListeners(eventListener,AWTEventListener.class); 2251 2252 java.util.List<AWTEventListenerProxy> list = new ArrayList<>(la.length); 2253 2254 for (int i = 0; i < la.length; i++) { 2255 SelectiveAWTEventListener sael = (SelectiveAWTEventListener)la[i]; 2256 if ((sael.getEventMask() & eventMask) == eventMask) { 2257 //AWTEventListener tempL = sael.getListener(); 2258 list.add(new AWTEventListenerProxy(sael.getEventMask(), 2259 sael.getListener())); 2260 } 2261 } 2262 return list.toArray(new AWTEventListener[0]); 2263 } 2264 } 2265 2266 /* 2267 * This method notifies any AWTEventListeners that an event 2268 * is about to be dispatched. 2269 * 2270 * @param theEvent the event which will be dispatched. 2271 */ 2272 void notifyAWTEventListeners(AWTEvent theEvent) { 2273 // This is a workaround for headless toolkits. It would be 2274 // better to override this method but it is declared package private. 2275 // "this instanceof" syntax defeats polymorphism. 2276 // --mm, 03/03/00 2277 if (this instanceof HeadlessToolkit) { 2278 ((HeadlessToolkit)this).getUnderlyingToolkit() 2279 .notifyAWTEventListeners(theEvent); 2280 return; 2281 } 2282 2283 AWTEventListener eventListener = this.eventListener; 2284 if (eventListener != null) { 2285 eventListener.eventDispatched(theEvent); 2286 } 2287 } 2288 2289 static private class ToolkitEventMulticaster extends AWTEventMulticaster 2290 implements AWTEventListener { 2291 // Implementation cloned from AWTEventMulticaster. 2292 2293 ToolkitEventMulticaster(AWTEventListener a, AWTEventListener b) { 2294 super(a, b); 2295 } 2296 2297 static AWTEventListener add(AWTEventListener a, 2298 AWTEventListener b) { 2299 if (a == null) return b; 2300 if (b == null) return a; 2301 return new ToolkitEventMulticaster(a, b); 2302 } 2303 2304 static AWTEventListener remove(AWTEventListener l, 2305 AWTEventListener oldl) { 2306 return (AWTEventListener) removeInternal(l, oldl); 2307 } 2308 2309 // #4178589: must overload remove(EventListener) to call our add() 2310 // instead of the static addInternal() so we allocate a 2311 // ToolkitEventMulticaster instead of an AWTEventMulticaster. 2312 // Note: this method is called by AWTEventListener.removeInternal(), 2313 // so its method signature must match AWTEventListener.remove(). 2314 protected EventListener remove(EventListener oldl) { 2315 if (oldl == a) return b; 2316 if (oldl == b) return a; 2317 AWTEventListener a2 = (AWTEventListener)removeInternal(a, oldl); 2318 AWTEventListener b2 = (AWTEventListener)removeInternal(b, oldl); 2319 if (a2 == a && b2 == b) { 2320 return this; // it's not here 2321 } 2322 return add(a2, b2); 2323 } 2324 2325 public void eventDispatched(AWTEvent event) { 2326 ((AWTEventListener)a).eventDispatched(event); 2327 ((AWTEventListener)b).eventDispatched(event); 2328 } 2329 } 2330 2331 private class SelectiveAWTEventListener implements AWTEventListener { 2332 AWTEventListener listener; 2333 private long eventMask; 2334 // This array contains the number of times to call the eventlistener 2335 // for each event type. 2336 int[] calls = new int[Toolkit.LONG_BITS]; 2337 2338 public AWTEventListener getListener() {return listener;} 2339 public long getEventMask() {return eventMask;} 2340 public int[] getCalls() {return calls;} 2341 2342 public void orEventMasks(long mask) { 2343 eventMask |= mask; 2344 // For each event bit set in mask, increment its call count. 2345 for (int i=0; i<Toolkit.LONG_BITS; i++) { 2346 // If no bits are set, break out of loop. 2347 if (mask == 0) { 2348 break; 2349 } 2350 if ((mask & 1L) != 0) { // Always test bit 0. 2351 calls[i]++; 2352 } 2353 mask >>>= 1; // Right shift, fill with zeros on left. 2354 } 2355 } 2356 2357 SelectiveAWTEventListener(AWTEventListener l, long mask) { 2358 listener = l; 2359 eventMask = mask; 2360 } 2361 2362 public void eventDispatched(AWTEvent event) { 2363 long eventBit = 0; // Used to save the bit of the event type. 2364 if (((eventBit = eventMask & AWTEvent.COMPONENT_EVENT_MASK) != 0 && 2365 event.id >= ComponentEvent.COMPONENT_FIRST && 2366 event.id <= ComponentEvent.COMPONENT_LAST) 2367 || ((eventBit = eventMask & AWTEvent.CONTAINER_EVENT_MASK) != 0 && 2368 event.id >= ContainerEvent.CONTAINER_FIRST && 2369 event.id <= ContainerEvent.CONTAINER_LAST) 2370 || ((eventBit = eventMask & AWTEvent.FOCUS_EVENT_MASK) != 0 && 2371 event.id >= FocusEvent.FOCUS_FIRST && 2372 event.id <= FocusEvent.FOCUS_LAST) 2373 || ((eventBit = eventMask & AWTEvent.KEY_EVENT_MASK) != 0 && 2374 event.id >= KeyEvent.KEY_FIRST && 2375 event.id <= KeyEvent.KEY_LAST) 2376 || ((eventBit = eventMask & AWTEvent.MOUSE_WHEEL_EVENT_MASK) != 0 && 2377 event.id == MouseEvent.MOUSE_WHEEL) 2378 || ((eventBit = eventMask & AWTEvent.MOUSE_MOTION_EVENT_MASK) != 0 && 2379 (event.id == MouseEvent.MOUSE_MOVED || 2380 event.id == MouseEvent.MOUSE_DRAGGED)) 2381 || ((eventBit = eventMask & AWTEvent.MOUSE_EVENT_MASK) != 0 && 2382 event.id != MouseEvent.MOUSE_MOVED && 2383 event.id != MouseEvent.MOUSE_DRAGGED && 2384 event.id != MouseEvent.MOUSE_WHEEL && 2385 event.id >= MouseEvent.MOUSE_FIRST && 2386 event.id <= MouseEvent.MOUSE_LAST) 2387 || ((eventBit = eventMask & AWTEvent.WINDOW_EVENT_MASK) != 0 && 2388 (event.id >= WindowEvent.WINDOW_FIRST && 2389 event.id <= WindowEvent.WINDOW_LAST)) 2390 || ((eventBit = eventMask & AWTEvent.ACTION_EVENT_MASK) != 0 && 2391 event.id >= ActionEvent.ACTION_FIRST && 2392 event.id <= ActionEvent.ACTION_LAST) 2393 || ((eventBit = eventMask & AWTEvent.ADJUSTMENT_EVENT_MASK) != 0 && 2394 event.id >= AdjustmentEvent.ADJUSTMENT_FIRST && 2395 event.id <= AdjustmentEvent.ADJUSTMENT_LAST) 2396 || ((eventBit = eventMask & AWTEvent.ITEM_EVENT_MASK) != 0 && 2397 event.id >= ItemEvent.ITEM_FIRST && 2398 event.id <= ItemEvent.ITEM_LAST) 2399 || ((eventBit = eventMask & AWTEvent.TEXT_EVENT_MASK) != 0 && 2400 event.id >= TextEvent.TEXT_FIRST && 2401 event.id <= TextEvent.TEXT_LAST) 2402 || ((eventBit = eventMask & AWTEvent.INPUT_METHOD_EVENT_MASK) != 0 && 2403 event.id >= InputMethodEvent.INPUT_METHOD_FIRST && 2404 event.id <= InputMethodEvent.INPUT_METHOD_LAST) 2405 || ((eventBit = eventMask & AWTEvent.PAINT_EVENT_MASK) != 0 && 2406 event.id >= PaintEvent.PAINT_FIRST && 2407 event.id <= PaintEvent.PAINT_LAST) 2408 || ((eventBit = eventMask & AWTEvent.INVOCATION_EVENT_MASK) != 0 && 2409 event.id >= InvocationEvent.INVOCATION_FIRST && 2410 event.id <= InvocationEvent.INVOCATION_LAST) 2411 || ((eventBit = eventMask & AWTEvent.HIERARCHY_EVENT_MASK) != 0 && 2412 event.id == HierarchyEvent.HIERARCHY_CHANGED) 2413 || ((eventBit = eventMask & AWTEvent.HIERARCHY_BOUNDS_EVENT_MASK) != 0 && 2414 (event.id == HierarchyEvent.ANCESTOR_MOVED || 2415 event.id == HierarchyEvent.ANCESTOR_RESIZED)) 2416 || ((eventBit = eventMask & AWTEvent.WINDOW_STATE_EVENT_MASK) != 0 && 2417 event.id == WindowEvent.WINDOW_STATE_CHANGED) 2418 || ((eventBit = eventMask & AWTEvent.WINDOW_FOCUS_EVENT_MASK) != 0 && 2419 (event.id == WindowEvent.WINDOW_GAINED_FOCUS || 2420 event.id == WindowEvent.WINDOW_LOST_FOCUS)) 2421 || ((eventBit = eventMask & sun.awt.SunToolkit.GRAB_EVENT_MASK) != 0 && 2422 (event instanceof sun.awt.UngrabEvent))) { 2423 // Get the index of the call count for this event type. 2424 // Instead of using Math.log(...) we will calculate it with 2425 // bit shifts. That's what previous implementation looked like: 2426 // 2427 // int ci = (int) (Math.log(eventBit)/Math.log(2)); 2428 int ci = 0; 2429 for (long eMask = eventBit; eMask != 0; eMask >>>= 1, ci++) { 2430 } 2431 ci--; 2432 // Call the listener as many times as it was added for this 2433 // event type. 2434 for (int i=0; i<calls[ci]; i++) { 2435 listener.eventDispatched(event); 2436 } 2437 } 2438 } 2439 } 2440 2441 /** 2442 * Returns a map of visual attributes for the abstract level description 2443 * of the given input method highlight, or null if no mapping is found. 2444 * The style field of the input method highlight is ignored. The map 2445 * returned is unmodifiable. 2446 * @param highlight input method highlight 2447 * @return style attribute map, or <code>null</code> 2448 * @exception HeadlessException if 2449 * <code>GraphicsEnvironment.isHeadless</code> returns true 2450 * @see java.awt.GraphicsEnvironment#isHeadless 2451 * @since 1.3 2452 */ 2453 public abstract Map<java.awt.font.TextAttribute,?> 2454 mapInputMethodHighlight(InputMethodHighlight highlight) 2455 throws HeadlessException; 2456 2457 private static PropertyChangeSupport createPropertyChangeSupport(Toolkit toolkit) { 2458 if (toolkit instanceof SunToolkit || toolkit instanceof HeadlessToolkit) { 2459 return new DesktopPropertyChangeSupport(toolkit); 2460 } else { 2461 return new PropertyChangeSupport(toolkit); 2462 } 2463 } 2464 2465 @SuppressWarnings("serial") 2466 private static class DesktopPropertyChangeSupport extends PropertyChangeSupport { 2467 2468 private static final StringBuilder PROP_CHANGE_SUPPORT_KEY = 2469 new StringBuilder("desktop property change support key"); 2470 private final Object source; 2471 2472 public DesktopPropertyChangeSupport(Object sourceBean) { 2473 super(sourceBean); 2474 source = sourceBean; 2475 } 2476 2477 @Override 2478 public synchronized void addPropertyChangeListener( 2479 String propertyName, 2480 PropertyChangeListener listener) 2481 { 2482 PropertyChangeSupport pcs = (PropertyChangeSupport) 2483 AppContext.getAppContext().get(PROP_CHANGE_SUPPORT_KEY); 2484 if (null == pcs) { 2485 pcs = new PropertyChangeSupport(source); 2486 AppContext.getAppContext().put(PROP_CHANGE_SUPPORT_KEY, pcs); 2487 } 2488 pcs.addPropertyChangeListener(propertyName, listener); 2489 } 2490 2491 @Override 2492 public synchronized void removePropertyChangeListener( 2493 String propertyName, 2494 PropertyChangeListener listener) 2495 { 2496 PropertyChangeSupport pcs = (PropertyChangeSupport) 2497 AppContext.getAppContext().get(PROP_CHANGE_SUPPORT_KEY); 2498 if (null != pcs) { 2499 pcs.removePropertyChangeListener(propertyName, listener); 2500 } 2501 } 2502 2503 @Override 2504 public synchronized PropertyChangeListener[] getPropertyChangeListeners() 2505 { 2506 PropertyChangeSupport pcs = (PropertyChangeSupport) 2507 AppContext.getAppContext().get(PROP_CHANGE_SUPPORT_KEY); 2508 if (null != pcs) { 2509 return pcs.getPropertyChangeListeners(); 2510 } else { 2511 return new PropertyChangeListener[0]; 2512 } 2513 } 2514 2515 @Override 2516 public synchronized PropertyChangeListener[] getPropertyChangeListeners(String propertyName) 2517 { 2518 PropertyChangeSupport pcs = (PropertyChangeSupport) 2519 AppContext.getAppContext().get(PROP_CHANGE_SUPPORT_KEY); 2520 if (null != pcs) { 2521 return pcs.getPropertyChangeListeners(propertyName); 2522 } else { 2523 return new PropertyChangeListener[0]; 2524 } 2525 } 2526 2527 @Override 2528 public synchronized void addPropertyChangeListener(PropertyChangeListener listener) { 2529 PropertyChangeSupport pcs = (PropertyChangeSupport) 2530 AppContext.getAppContext().get(PROP_CHANGE_SUPPORT_KEY); 2531 if (null == pcs) { 2532 pcs = new PropertyChangeSupport(source); 2533 AppContext.getAppContext().put(PROP_CHANGE_SUPPORT_KEY, pcs); 2534 } 2535 pcs.addPropertyChangeListener(listener); 2536 } 2537 2538 @Override 2539 public synchronized void removePropertyChangeListener(PropertyChangeListener listener) { 2540 PropertyChangeSupport pcs = (PropertyChangeSupport) 2541 AppContext.getAppContext().get(PROP_CHANGE_SUPPORT_KEY); 2542 if (null != pcs) { 2543 pcs.removePropertyChangeListener(listener); 2544 } 2545 } 2546 2547 /* 2548 * we do expect that all other fireXXX() methods of java.beans.PropertyChangeSupport 2549 * use this method. If this will be changed we will need to change this class. 2550 */ 2551 @Override 2552 public void firePropertyChange(final PropertyChangeEvent evt) { 2553 Object oldValue = evt.getOldValue(); 2554 Object newValue = evt.getNewValue(); 2555 String propertyName = evt.getPropertyName(); 2556 if (oldValue != null && newValue != null && oldValue.equals(newValue)) { 2557 return; 2558 } 2559 Runnable updater = new Runnable() { 2560 public void run() { 2561 PropertyChangeSupport pcs = (PropertyChangeSupport) 2562 AppContext.getAppContext().get(PROP_CHANGE_SUPPORT_KEY); 2563 if (null != pcs) { 2564 pcs.firePropertyChange(evt); 2565 } 2566 } 2567 }; 2568 final AppContext currentAppContext = AppContext.getAppContext(); 2569 for (AppContext appContext : AppContext.getAppContexts()) { 2570 if (null == appContext || appContext.isDisposed()) { 2571 continue; 2572 } 2573 if (currentAppContext == appContext) { 2574 updater.run(); 2575 } else { 2576 final PeerEvent e = new PeerEvent(source, updater, PeerEvent.ULTIMATE_PRIORITY_EVENT); 2577 SunToolkit.postEvent(appContext, e); 2578 } 2579 } 2580 } 2581 } 2582 2583 /** 2584 * Reports whether events from extra mouse buttons are allowed to be processed and posted into 2585 * {@code EventQueue}. 2586 * <br> 2587 * To change the returned value it is necessary to set the {@code sun.awt.enableExtraMouseButtons} 2588 * property before the {@code Toolkit} class initialization. This setting could be done on the application 2589 * startup by the following command: 2590 * <pre> 2591 * java -Dsun.awt.enableExtraMouseButtons=false Application 2592 * </pre> 2593 * Alternatively, the property could be set in the application by using the following code: 2594 * <pre> 2595 * System.setProperty("sun.awt.enableExtraMouseButtons", "true"); 2596 * </pre> 2597 * before the {@code Toolkit} class initialization. 2598 * If not set by the time of the {@code Toolkit} class initialization, this property will be 2599 * initialized with {@code true}. 2600 * Changing this value after the {@code Toolkit} class initialization will have no effect. 2601 * <p> 2602 * @exception HeadlessException if GraphicsEnvironment.isHeadless() returns true 2603 * @return {@code true} if events from extra mouse buttons are allowed to be processed and posted; 2604 * {@code false} otherwise 2605 * @see System#getProperty(String propertyName) 2606 * @see System#setProperty(String propertyName, String value) 2607 * @see java.awt.EventQueue 2608 * @since 1.7 2609 */ 2610 public boolean areExtraMouseButtonsEnabled() throws HeadlessException { 2611 GraphicsEnvironment.checkHeadless(); 2612 2613 return Toolkit.getDefaultToolkit().areExtraMouseButtonsEnabled(); 2614 } 2615 }