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 java.beans.PropertyChangeListener; 52 import java.beans.PropertyChangeSupport; 53 import sun.awt.AppContext; 54 55 import sun.awt.HeadlessToolkit; 56 import sun.awt.NullComponentPeer; 57 import sun.awt.PeerEvent; 58 import sun.awt.SunToolkit; 59 import sun.security.util.SecurityConstants; 60 61 import sun.util.CoreResourceBundleControl; 62 63 /** 64 * This class is the abstract superclass of all actual 65 * implementations of the Abstract Window Toolkit. Subclasses of 66 * the <code>Toolkit</code> class are used to bind the various components 67 * to particular native toolkit implementations. 68 * <p> 69 * Many GUI events may be delivered to user 70 * asynchronously, if the opposite is not specified explicitly. 71 * As well as 72 * many GUI operations may be performed asynchronously. 73 * This fact means that if the state of a component is set, and then 74 * the state immediately queried, the returned value may not yet 75 * reflect the requested change. This behavior includes, but is not 76 * limited to: 77 * <ul> 78 * <li>Scrolling to a specified position. 79 * <br>For example, calling <code>ScrollPane.setScrollPosition</code> 80 * and then <code>getScrollPosition</code> may return an incorrect 81 * value if the original request has not yet been processed. 82 * <p> 83 * <li>Moving the focus from one component to another. 84 * <br>For more information, see 85 * <a href="http://java.sun.com/docs/books/tutorial/uiswing/misc/focus.html#transferTiming">Timing 86 * Focus Transfers</a>, a section in 87 * <a href="http://java.sun.com/docs/books/tutorial/uiswing/">The Swing 88 * Tutorial</a>. 89 * <p> 90 * <li>Making a top-level container visible. 91 * <br>Calling <code>setVisible(true)</code> on a <code>Window</code>, 92 * <code>Frame</code> or <code>Dialog</code> may occur 93 * asynchronously. 94 * <p> 95 * <li>Setting the size or location of a top-level container. 96 * <br>Calls to <code>setSize</code>, <code>setBounds</code> or 97 * <code>setLocation</code> on a <code>Window</code>, 98 * <code>Frame</code> or <code>Dialog</code> are forwarded 99 * to the underlying window management system and may be 100 * ignored or modified. See {@link java.awt.Window} for 101 * more information. 102 * </ul> 103 * <p> 104 * Most applications should not call any of the methods in this 105 * class directly. The methods defined by <code>Toolkit</code> are 106 * the "glue" that joins the platform-independent classes in the 107 * <code>java.awt</code> package with their counterparts in 108 * <code>java.awt.peer</code>. Some methods defined by 109 * <code>Toolkit</code> query the native operating system directly. 110 * 111 * @author Sami Shaio 112 * @author Arthur van Hoff 113 * @author Fred Ecks 114 * @since JDK1.0 115 */ 116 public abstract class Toolkit { 117 118 /** 119 * Creates this toolkit's implementation of the <code>Desktop</code> 120 * using the specified peer interface. 121 * @param target the desktop to be implemented 122 * @return this toolkit's implementation of the <code>Desktop</code> 123 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 124 * returns true 125 * @see java.awt.GraphicsEnvironment#isHeadless 126 * @see java.awt.Desktop 127 * @see java.awt.peer.DesktopPeer 128 * @since 1.6 129 */ 130 protected abstract DesktopPeer createDesktopPeer(Desktop target) 131 throws HeadlessException; 132 133 134 /** 135 * Creates this toolkit's implementation of <code>Button</code> using 136 * the specified peer interface. 137 * @param target the button to be implemented. 138 * @return this toolkit's implementation of <code>Button</code>. 139 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 140 * returns true 141 * @see java.awt.GraphicsEnvironment#isHeadless 142 * @see java.awt.Button 143 * @see java.awt.peer.ButtonPeer 144 */ 145 protected abstract ButtonPeer createButton(Button target) 146 throws HeadlessException; 147 148 /** 149 * Creates this toolkit's implementation of <code>TextField</code> using 150 * the specified peer interface. 151 * @param target the text field to be implemented. 152 * @return this toolkit's implementation of <code>TextField</code>. 153 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 154 * returns true 155 * @see java.awt.GraphicsEnvironment#isHeadless 156 * @see java.awt.TextField 157 * @see java.awt.peer.TextFieldPeer 158 */ 159 protected abstract TextFieldPeer createTextField(TextField target) 160 throws HeadlessException; 161 162 /** 163 * Creates this toolkit's implementation of <code>Label</code> using 164 * the specified peer interface. 165 * @param target the label to be implemented. 166 * @return this toolkit's implementation of <code>Label</code>. 167 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 168 * returns true 169 * @see java.awt.GraphicsEnvironment#isHeadless 170 * @see java.awt.Label 171 * @see java.awt.peer.LabelPeer 172 */ 173 protected abstract LabelPeer createLabel(Label target) 174 throws HeadlessException; 175 176 /** 177 * Creates this toolkit's implementation of <code>List</code> using 178 * the specified peer interface. 179 * @param target the list to be implemented. 180 * @return this toolkit's implementation of <code>List</code>. 181 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 182 * returns true 183 * @see java.awt.GraphicsEnvironment#isHeadless 184 * @see java.awt.List 185 * @see java.awt.peer.ListPeer 186 */ 187 protected abstract ListPeer createList(java.awt.List target) 188 throws HeadlessException; 189 190 /** 191 * Creates this toolkit's implementation of <code>Checkbox</code> using 192 * the specified peer interface. 193 * @param target the check box to be implemented. 194 * @return this toolkit's implementation of <code>Checkbox</code>. 195 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 196 * returns true 197 * @see java.awt.GraphicsEnvironment#isHeadless 198 * @see java.awt.Checkbox 199 * @see java.awt.peer.CheckboxPeer 200 */ 201 protected abstract CheckboxPeer createCheckbox(Checkbox target) 202 throws HeadlessException; 203 204 /** 205 * Creates this toolkit's implementation of <code>Scrollbar</code> using 206 * the specified peer interface. 207 * @param target the scroll bar to be implemented. 208 * @return this toolkit's implementation of <code>Scrollbar</code>. 209 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 210 * returns true 211 * @see java.awt.GraphicsEnvironment#isHeadless 212 * @see java.awt.Scrollbar 213 * @see java.awt.peer.ScrollbarPeer 214 */ 215 protected abstract ScrollbarPeer createScrollbar(Scrollbar target) 216 throws HeadlessException; 217 218 /** 219 * Creates this toolkit's implementation of <code>ScrollPane</code> using 220 * the specified peer interface. 221 * @param target the scroll pane to be implemented. 222 * @return this toolkit's implementation of <code>ScrollPane</code>. 223 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 224 * returns true 225 * @see java.awt.GraphicsEnvironment#isHeadless 226 * @see java.awt.ScrollPane 227 * @see java.awt.peer.ScrollPanePeer 228 * @since JDK1.1 229 */ 230 protected abstract ScrollPanePeer createScrollPane(ScrollPane target) 231 throws HeadlessException; 232 233 /** 234 * Creates this toolkit's implementation of <code>TextArea</code> using 235 * the specified peer interface. 236 * @param target the text area to be implemented. 237 * @return this toolkit's implementation of <code>TextArea</code>. 238 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 239 * returns true 240 * @see java.awt.GraphicsEnvironment#isHeadless 241 * @see java.awt.TextArea 242 * @see java.awt.peer.TextAreaPeer 243 */ 244 protected abstract TextAreaPeer createTextArea(TextArea target) 245 throws HeadlessException; 246 247 /** 248 * Creates this toolkit's implementation of <code>Choice</code> using 249 * the specified peer interface. 250 * @param target the choice to be implemented. 251 * @return this toolkit's implementation of <code>Choice</code>. 252 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 253 * returns true 254 * @see java.awt.GraphicsEnvironment#isHeadless 255 * @see java.awt.Choice 256 * @see java.awt.peer.ChoicePeer 257 */ 258 protected abstract ChoicePeer createChoice(Choice target) 259 throws HeadlessException; 260 261 /** 262 * Creates this toolkit's implementation of <code>Frame</code> using 263 * the specified peer interface. 264 * @param target the frame to be implemented. 265 * @return this toolkit's implementation of <code>Frame</code>. 266 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 267 * returns true 268 * @see java.awt.GraphicsEnvironment#isHeadless 269 * @see java.awt.Frame 270 * @see java.awt.peer.FramePeer 271 */ 272 protected abstract FramePeer createFrame(Frame target) 273 throws HeadlessException; 274 275 /** 276 * Creates this toolkit's implementation of <code>Canvas</code> using 277 * the specified peer interface. 278 * @param target the canvas to be implemented. 279 * @return this toolkit's implementation of <code>Canvas</code>. 280 * @see java.awt.Canvas 281 * @see java.awt.peer.CanvasPeer 282 */ 283 protected abstract CanvasPeer createCanvas(Canvas target); 284 285 /** 286 * Creates this toolkit's implementation of <code>Panel</code> using 287 * the specified peer interface. 288 * @param target the panel to be implemented. 289 * @return this toolkit's implementation of <code>Panel</code>. 290 * @see java.awt.Panel 291 * @see java.awt.peer.PanelPeer 292 */ 293 protected abstract PanelPeer createPanel(Panel target); 294 295 /** 296 * Creates this toolkit's implementation of <code>Window</code> using 297 * the specified peer interface. 298 * @param target the window to be implemented. 299 * @return this toolkit's implementation of <code>Window</code>. 300 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 301 * returns true 302 * @see java.awt.GraphicsEnvironment#isHeadless 303 * @see java.awt.Window 304 * @see java.awt.peer.WindowPeer 305 */ 306 protected abstract WindowPeer createWindow(Window target) 307 throws HeadlessException; 308 309 /** 310 * Creates this toolkit's implementation of <code>Dialog</code> using 311 * the specified peer interface. 312 * @param target the dialog to be implemented. 313 * @return this toolkit's implementation of <code>Dialog</code>. 314 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 315 * returns true 316 * @see java.awt.GraphicsEnvironment#isHeadless 317 * @see java.awt.Dialog 318 * @see java.awt.peer.DialogPeer 319 */ 320 protected abstract DialogPeer createDialog(Dialog target) 321 throws HeadlessException; 322 323 /** 324 * Creates this toolkit's implementation of <code>MenuBar</code> using 325 * the specified peer interface. 326 * @param target the menu bar to be implemented. 327 * @return this toolkit's implementation of <code>MenuBar</code>. 328 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 329 * returns true 330 * @see java.awt.GraphicsEnvironment#isHeadless 331 * @see java.awt.MenuBar 332 * @see java.awt.peer.MenuBarPeer 333 */ 334 protected abstract MenuBarPeer createMenuBar(MenuBar target) 335 throws HeadlessException; 336 337 /** 338 * Creates this toolkit's implementation of <code>Menu</code> using 339 * the specified peer interface. 340 * @param target the menu to be implemented. 341 * @return this toolkit's implementation of <code>Menu</code>. 342 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 343 * returns true 344 * @see java.awt.GraphicsEnvironment#isHeadless 345 * @see java.awt.Menu 346 * @see java.awt.peer.MenuPeer 347 */ 348 protected abstract MenuPeer createMenu(Menu target) 349 throws HeadlessException; 350 351 /** 352 * Creates this toolkit's implementation of <code>PopupMenu</code> using 353 * the specified peer interface. 354 * @param target the popup menu to be implemented. 355 * @return this toolkit's implementation of <code>PopupMenu</code>. 356 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 357 * returns true 358 * @see java.awt.GraphicsEnvironment#isHeadless 359 * @see java.awt.PopupMenu 360 * @see java.awt.peer.PopupMenuPeer 361 * @since JDK1.1 362 */ 363 protected abstract PopupMenuPeer createPopupMenu(PopupMenu target) 364 throws HeadlessException; 365 366 /** 367 * Creates this toolkit's implementation of <code>MenuItem</code> using 368 * the specified peer interface. 369 * @param target the menu item to be implemented. 370 * @return this toolkit's implementation of <code>MenuItem</code>. 371 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 372 * returns true 373 * @see java.awt.GraphicsEnvironment#isHeadless 374 * @see java.awt.MenuItem 375 * @see java.awt.peer.MenuItemPeer 376 */ 377 protected abstract MenuItemPeer createMenuItem(MenuItem target) 378 throws HeadlessException; 379 380 /** 381 * Creates this toolkit's implementation of <code>FileDialog</code> using 382 * the specified peer interface. 383 * @param target the file dialog to be implemented. 384 * @return this toolkit's implementation of <code>FileDialog</code>. 385 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 386 * returns true 387 * @see java.awt.GraphicsEnvironment#isHeadless 388 * @see java.awt.FileDialog 389 * @see java.awt.peer.FileDialogPeer 390 */ 391 protected abstract FileDialogPeer createFileDialog(FileDialog target) 392 throws HeadlessException; 393 394 /** 395 * Creates this toolkit's implementation of <code>CheckboxMenuItem</code> using 396 * the specified peer interface. 397 * @param target the checkbox menu item to be implemented. 398 * @return this toolkit's implementation of <code>CheckboxMenuItem</code>. 399 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 400 * returns true 401 * @see java.awt.GraphicsEnvironment#isHeadless 402 * @see java.awt.CheckboxMenuItem 403 * @see java.awt.peer.CheckboxMenuItemPeer 404 */ 405 protected abstract CheckboxMenuItemPeer createCheckboxMenuItem( 406 CheckboxMenuItem target) throws HeadlessException; 407 408 /** 409 * Obtains this toolkit's implementation of helper class for 410 * <code>MouseInfo</code> operations. 411 * @return this toolkit's implementation of helper for <code>MouseInfo</code> 412 * @throws UnsupportedOperationException if this operation is not implemented 413 * @see java.awt.peer.MouseInfoPeer 414 * @see java.awt.MouseInfo 415 * @since 1.5 416 */ 417 protected MouseInfoPeer getMouseInfoPeer() { 418 throw new UnsupportedOperationException("Not implemented"); 419 } 420 421 private static LightweightPeer lightweightMarker; 422 423 /** 424 * Creates a peer for a component or container. This peer is windowless 425 * and allows the Component and Container classes to be extended directly 426 * to create windowless components that are defined entirely in java. 427 * 428 * @param target The Component to be created. 429 */ 430 protected LightweightPeer createComponent(Component target) { 431 if (lightweightMarker == null) { 432 lightweightMarker = new NullComponentPeer(); 433 } 434 return lightweightMarker; 435 } 436 437 /** 438 * Creates this toolkit's implementation of <code>Font</code> using 439 * the specified peer interface. 440 * @param name the font to be implemented 441 * @param style the style of the font, such as <code>PLAIN</code>, 442 * <code>BOLD</code>, <code>ITALIC</code>, or a combination 443 * @return this toolkit's implementation of <code>Font</code> 444 * @see java.awt.Font 445 * @see java.awt.peer.FontPeer 446 * @see java.awt.GraphicsEnvironment#getAllFonts 447 * @deprecated see java.awt.GraphicsEnvironment#getAllFonts 448 */ 449 @Deprecated 450 protected abstract FontPeer getFontPeer(String name, int style); 451 452 // The following method is called by the private method 453 // <code>updateSystemColors</code> in <code>SystemColor</code>. 454 455 /** 456 * Fills in the integer array that is supplied as an argument 457 * with the current system color values. 458 * 459 * @param systemColors an integer array. 460 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 461 * returns true 462 * @see java.awt.GraphicsEnvironment#isHeadless 463 * @since JDK1.1 464 */ 465 protected void loadSystemColors(int[] systemColors) 466 throws HeadlessException { 467 GraphicsEnvironment.checkHeadless(); 468 } 469 470 /** 471 * Controls whether the layout of Containers is validated dynamically 472 * during resizing, or statically, after resizing is complete. 473 * Use {@code isDynamicLayoutActive()} to detect if this feature enabled 474 * in this program and is supported by this operating system 475 * and/or window manager. 476 * Note that this feature is supported not on all platforms, and 477 * conversely, that this feature cannot be turned off on some platforms. 478 * On these platforms where dynamic layout during resizing is not supported 479 * (or is always supported), setting this property has no effect. 480 * Note that this feature can be set or unset as a property of the 481 * operating system or window manager on some platforms. On such 482 * platforms, the dynamic resize property must be set at the operating 483 * system or window manager level before this method can take effect. 484 * This method does not change support or settings of the underlying 485 * operating system or 486 * window manager. The OS/WM support can be 487 * queried using getDesktopProperty("awt.dynamicLayoutSupported") method. 488 * 489 * @param dynamic If true, Containers should re-layout their 490 * components as the Container is being resized. If false, 491 * the layout will be validated after resizing is completed. 492 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 493 * returns true 494 * @see #isDynamicLayoutSet() 495 * @see #isDynamicLayoutActive() 496 * @see #getDesktopProperty(String propertyName) 497 * @see java.awt.GraphicsEnvironment#isHeadless 498 * @since 1.4 499 */ 500 public void setDynamicLayout(boolean dynamic) 501 throws HeadlessException { 502 GraphicsEnvironment.checkHeadless(); 503 } 504 505 /** 506 * Returns whether the layout of Containers is validated dynamically 507 * during resizing, or statically, after resizing is complete. 508 * Note: this method returns the value that was set programmatically; 509 * it does not reflect support at the level of the operating system 510 * or window manager for dynamic layout on resizing, or the current 511 * operating system or window manager settings. The OS/WM support can 512 * be queried using getDesktopProperty("awt.dynamicLayoutSupported"). 513 * 514 * @return true if validation of Containers is done dynamically, 515 * false if validation is done after resizing is finished. 516 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 517 * returns true 518 * @see #setDynamicLayout(boolean dynamic) 519 * @see #isDynamicLayoutActive() 520 * @see #getDesktopProperty(String propertyName) 521 * @see java.awt.GraphicsEnvironment#isHeadless 522 * @since 1.4 523 */ 524 protected boolean isDynamicLayoutSet() 525 throws HeadlessException { 526 GraphicsEnvironment.checkHeadless(); 527 528 if (this != Toolkit.getDefaultToolkit()) { 529 return Toolkit.getDefaultToolkit().isDynamicLayoutSet(); 530 } else { 531 return false; 532 } 533 } 534 535 /** 536 * Returns whether dynamic layout of Containers on resize is 537 * currently active (both set in program 538 *( {@code isDynamicLayoutSet()} ) 539 *, and supported 540 * by the underlying operating system and/or window manager). 541 * If dynamic layout is currently inactive then Containers 542 * re-layout their components when resizing is completed. As a result 543 * the {@code Component.validate()} method will be invoked only 544 * once per resize. 545 * If dynamic layout is currently active then Containers 546 * re-layout their components on every native resize event and 547 * the {@code validate()} method will be invoked each time. 548 * The OS/WM support can be queried using 549 * the getDesktopProperty("awt.dynamicLayoutSupported") method. 550 * 551 * @return true if dynamic layout of Containers on resize is 552 * currently active, false otherwise. 553 * @exception HeadlessException if the GraphicsEnvironment.isHeadless() 554 * method returns true 555 * @see #setDynamicLayout(boolean dynamic) 556 * @see #isDynamicLayoutSet() 557 * @see #getDesktopProperty(String propertyName) 558 * @see java.awt.GraphicsEnvironment#isHeadless 559 * @since 1.4 560 */ 561 public boolean isDynamicLayoutActive() 562 throws HeadlessException { 563 GraphicsEnvironment.checkHeadless(); 564 565 if (this != Toolkit.getDefaultToolkit()) { 566 return Toolkit.getDefaultToolkit().isDynamicLayoutActive(); 567 } else { 568 return false; 569 } 570 } 571 572 /** 573 * Gets the size of the screen. On systems with multiple displays, the 574 * primary display is used. Multi-screen aware display dimensions are 575 * available from <code>GraphicsConfiguration</code> and 576 * <code>GraphicsDevice</code>. 577 * @return the size of this toolkit's screen, in pixels. 578 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 579 * returns true 580 * @see java.awt.GraphicsConfiguration#getBounds 581 * @see java.awt.GraphicsDevice#getDisplayMode 582 * @see java.awt.GraphicsEnvironment#isHeadless 583 */ 584 public abstract Dimension getScreenSize() 585 throws HeadlessException; 586 587 /** 588 * Returns the screen resolution in dots-per-inch. 589 * @return this toolkit's screen resolution, in dots-per-inch. 590 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 591 * returns true 592 * @see java.awt.GraphicsEnvironment#isHeadless 593 */ 594 public abstract int getScreenResolution() 595 throws HeadlessException; 596 597 /** 598 * Gets the insets of the screen. 599 * @param gc a <code>GraphicsConfiguration</code> 600 * @return the insets of this toolkit's screen, in pixels. 601 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 602 * returns true 603 * @see java.awt.GraphicsEnvironment#isHeadless 604 * @since 1.4 605 */ 606 public Insets getScreenInsets(GraphicsConfiguration gc) 607 throws HeadlessException { 608 GraphicsEnvironment.checkHeadless(); 609 if (this != Toolkit.getDefaultToolkit()) { 610 return Toolkit.getDefaultToolkit().getScreenInsets(gc); 611 } else { 612 return new Insets(0, 0, 0, 0); 613 } 614 } 615 616 /** 617 * Determines the color model of this toolkit's screen. 618 * <p> 619 * <code>ColorModel</code> is an abstract class that 620 * encapsulates the ability to translate between the 621 * pixel values of an image and its red, green, blue, 622 * and alpha components. 623 * <p> 624 * This toolkit method is called by the 625 * <code>getColorModel</code> method 626 * of the <code>Component</code> class. 627 * @return the color model of this toolkit's screen. 628 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 629 * returns true 630 * @see java.awt.GraphicsEnvironment#isHeadless 631 * @see java.awt.image.ColorModel 632 * @see java.awt.Component#getColorModel 633 */ 634 public abstract ColorModel getColorModel() 635 throws HeadlessException; 636 637 /** 638 * Returns the names of the available fonts in this toolkit.<p> 639 * For 1.1, the following font names are deprecated (the replacement 640 * name follows): 641 * <ul> 642 * <li>TimesRoman (use Serif) 643 * <li>Helvetica (use SansSerif) 644 * <li>Courier (use Monospaced) 645 * </ul><p> 646 * The ZapfDingbats fontname is also deprecated in 1.1 but the characters 647 * are defined in Unicode starting at 0x2700, and as of 1.1 Java supports 648 * those characters. 649 * @return the names of the available fonts in this toolkit. 650 * @deprecated see {@link java.awt.GraphicsEnvironment#getAvailableFontFamilyNames()} 651 * @see java.awt.GraphicsEnvironment#getAvailableFontFamilyNames() 652 */ 653 @Deprecated 654 public abstract String[] getFontList(); 655 656 /** 657 * Gets the screen device metrics for rendering of the font. 658 * @param font a font 659 * @return the screen metrics of the specified font in this toolkit 660 * @deprecated As of JDK version 1.2, replaced by the <code>Font</code> 661 * method <code>getLineMetrics</code>. 662 * @see java.awt.font.LineMetrics 663 * @see java.awt.Font#getLineMetrics 664 * @see java.awt.GraphicsEnvironment#getScreenDevices 665 */ 666 @Deprecated 667 public abstract FontMetrics getFontMetrics(Font font); 668 669 /** 670 * Synchronizes this toolkit's graphics state. Some window systems 671 * may do buffering of graphics events. 672 * <p> 673 * This method ensures that the display is up-to-date. It is useful 674 * for animation. 675 */ 676 public abstract void sync(); 677 678 /** 679 * The default toolkit. 680 */ 681 private static Toolkit toolkit; 682 683 /** 684 * Used internally by the assistive technologies functions; set at 685 * init time and used at load time 686 */ 687 private static String atNames; 688 689 /** 690 * Initializes properties related to assistive technologies. 691 * These properties are used both in the loadAssistiveProperties() 692 * function below, as well as other classes in the jdk that depend 693 * on the properties (such as the use of the screen_magnifier_present 694 * property in Java2D hardware acceleration initialization). The 695 * initialization of the properties must be done before the platform- 696 * specific Toolkit class is instantiated so that all necessary 697 * properties are set up properly before any classes dependent upon them 698 * are initialized. 699 */ 700 private static void initAssistiveTechnologies() { 701 702 // Get accessibility properties 703 final String sep = File.separator; 704 final Properties properties = new Properties(); 705 706 707 atNames = java.security.AccessController.doPrivileged( 708 new java.security.PrivilegedAction<String>() { 709 public String run() { 710 711 // Try loading the per-user accessibility properties file. 712 try { 713 File propsFile = new File( 714 System.getProperty("user.home") + 715 sep + ".accessibility.properties"); 716 FileInputStream in = 717 new FileInputStream(propsFile); 718 719 // Inputstream has been buffered in Properties class 720 properties.load(in); 721 in.close(); 722 } catch (Exception e) { 723 // Per-user accessibility properties file does not exist 724 } 725 726 // Try loading the system-wide accessibility properties 727 // file only if a per-user accessibility properties 728 // file does not exist or is empty. 729 if (properties.size() == 0) { 730 try { 731 File propsFile = new File( 732 System.getProperty("java.home") + sep + "lib" + 733 sep + "accessibility.properties"); 734 FileInputStream in = 735 new FileInputStream(propsFile); 736 737 // Inputstream has been buffered in Properties class 738 properties.load(in); 739 in.close(); 740 } catch (Exception e) { 741 // System-wide accessibility properties file does 742 // not exist; 743 } 744 } 745 746 // Get whether a screen magnifier is present. First check 747 // the system property and then check the properties file. 748 String magPresent = System.getProperty("javax.accessibility.screen_magnifier_present"); 749 if (magPresent == null) { 750 magPresent = properties.getProperty("screen_magnifier_present", null); 751 if (magPresent != null) { 752 System.setProperty("javax.accessibility.screen_magnifier_present", magPresent); 753 } 754 } 755 756 // Get the names of any assistive technolgies to load. First 757 // check the system property and then check the properties 758 // file. 759 String classNames = System.getProperty("javax.accessibility.assistive_technologies"); 760 if (classNames == null) { 761 classNames = properties.getProperty("assistive_technologies", null); 762 if (classNames != null) { 763 System.setProperty("javax.accessibility.assistive_technologies", classNames); 764 } 765 } 766 return classNames; 767 } 768 }); 769 } 770 771 /** 772 * Loads additional classes into the VM, using the property 773 * 'assistive_technologies' specified in the Sun reference 774 * implementation by a line in the 'accessibility.properties' 775 * file. The form is "assistive_technologies=..." where 776 * the "..." is a comma-separated list of assistive technology 777 * classes to load. Each class is loaded in the order given 778 * and a single instance of each is created using 779 * Class.forName(class).newInstance(). All errors are handled 780 * via an AWTError exception. 781 * 782 * <p>The assumption is made that assistive technology classes are supplied 783 * as part of INSTALLED (as opposed to: BUNDLED) extensions or specified 784 * on the class path 785 * (and therefore can be loaded using the class loader returned by 786 * a call to <code>ClassLoader.getSystemClassLoader</code>, whose 787 * delegation parent is the extension class loader for installed 788 * extensions). 789 */ 790 private static void loadAssistiveTechnologies() { 791 // Load any assistive technologies 792 if (atNames != null) { 793 ClassLoader cl = ClassLoader.getSystemClassLoader(); 794 StringTokenizer parser = new StringTokenizer(atNames," ,"); 795 String atName; 796 while (parser.hasMoreTokens()) { 797 atName = parser.nextToken(); 798 try { 799 Class<?> clazz; 800 if (cl != null) { 801 clazz = cl.loadClass(atName); 802 } else { 803 clazz = Class.forName(atName); 804 } 805 clazz.newInstance(); 806 } catch (ClassNotFoundException e) { 807 throw new AWTError("Assistive Technology not found: " 808 + atName); 809 } catch (InstantiationException e) { 810 throw new AWTError("Could not instantiate Assistive" 811 + " Technology: " + atName); 812 } catch (IllegalAccessException e) { 813 throw new AWTError("Could not access Assistive" 814 + " Technology: " + atName); 815 } catch (Exception e) { 816 throw new AWTError("Error trying to install Assistive" 817 + " Technology: " + atName + " " + e); 818 } 819 } 820 } 821 } 822 823 /** 824 * Gets the default toolkit. 825 * <p> 826 * If a system property named <code>"java.awt.headless"</code> is set 827 * to <code>true</code> then the headless implementation 828 * of <code>Toolkit</code> is used. 829 * <p> 830 * If there is no <code>"java.awt.headless"</code> or it is set to 831 * <code>false</code> and there is a system property named 832 * <code>"awt.toolkit"</code>, 833 * that property is treated as the name of a class that is a subclass 834 * of <code>Toolkit</code>; 835 * otherwise the default platform-specific implementation of 836 * <code>Toolkit</code> is used. 837 * <p> 838 * Also loads additional classes into the VM, using the property 839 * 'assistive_technologies' specified in the Sun reference 840 * implementation by a line in the 'accessibility.properties' 841 * file. The form is "assistive_technologies=..." where 842 * the "..." is a comma-separated list of assistive technology 843 * classes to load. Each class is loaded in the order given 844 * and a single instance of each is created using 845 * Class.forName(class).newInstance(). This is done just after 846 * the AWT toolkit is created. All errors are handled via an 847 * AWTError exception. 848 * @return the default toolkit. 849 * @exception AWTError if a toolkit could not be found, or 850 * if one could not be accessed or instantiated. 851 */ 852 public static synchronized Toolkit getDefaultToolkit() { 853 if (toolkit == null) { 854 try { 855 // We disable the JIT during toolkit initialization. This 856 // tends to touch lots of classes that aren't needed again 857 // later and therefore JITing is counter-productiive. 858 java.lang.Compiler.disable(); 859 860 java.security.AccessController.doPrivileged( 861 new java.security.PrivilegedAction<Void>() { 862 public Void run() { 863 String nm = null; 864 Class<?> cls = null; 865 try { 866 nm = System.getProperty("awt.toolkit"); 867 try { 868 cls = Class.forName(nm); 869 } catch (ClassNotFoundException e) { 870 ClassLoader cl = ClassLoader.getSystemClassLoader(); 871 if (cl != null) { 872 try { 873 cls = cl.loadClass(nm); 874 } catch (ClassNotFoundException ee) { 875 throw new AWTError("Toolkit not found: " + nm); 876 } 877 } 878 } 879 if (cls != null) { 880 toolkit = (Toolkit)cls.newInstance(); 881 if (GraphicsEnvironment.isHeadless()) { 882 toolkit = new HeadlessToolkit(toolkit); 883 } 884 } 885 } catch (InstantiationException e) { 886 throw new AWTError("Could not instantiate Toolkit: " + nm); 887 } catch (IllegalAccessException e) { 888 throw new AWTError("Could not access Toolkit: " + nm); 889 } 890 return null; 891 } 892 }); 893 loadAssistiveTechnologies(); 894 } finally { 895 // Make sure to always re-enable the JIT. 896 java.lang.Compiler.enable(); 897 } 898 } 899 return toolkit; 900 } 901 902 /** 903 * Returns an image which gets pixel data from the specified file, 904 * whose format can be either GIF, JPEG or PNG. 905 * The underlying toolkit attempts to resolve multiple requests 906 * with the same filename to the same returned Image. 907 * <p> 908 * Since the mechanism required to facilitate this sharing of 909 * <code>Image</code> objects may continue to hold onto images 910 * that are no longer in use for an indefinite period of time, 911 * developers are encouraged to implement their own caching of 912 * images by using the {@link #createImage(java.lang.String) createImage} 913 * variant wherever available. 914 * If the image data contained in the specified file changes, 915 * the <code>Image</code> object returned from this method may 916 * still contain stale information which was loaded from the 917 * file after a prior call. 918 * Previously loaded image data can be manually discarded by 919 * calling the {@link Image#flush flush} method on the 920 * returned <code>Image</code>. 921 * <p> 922 * This method first checks if there is a security manager installed. 923 * If so, the method calls the security manager's 924 * <code>checkRead</code> method with the file specified to ensure 925 * that the access to the image is allowed. 926 * @param filename the name of a file containing pixel data 927 * in a recognized file format. 928 * @return an image which gets its pixel data from 929 * the specified file. 930 * @throws SecurityException if a security manager exists and its 931 * checkRead method doesn't allow the operation. 932 * @see #createImage(java.lang.String) 933 */ 934 public abstract Image getImage(String filename); 935 936 /** 937 * Returns an image which gets pixel data from the specified URL. 938 * The pixel data referenced by the specified URL must be in one 939 * of the following formats: GIF, JPEG or PNG. 940 * The underlying toolkit attempts to resolve multiple requests 941 * with the same URL to the same returned Image. 942 * <p> 943 * Since the mechanism required to facilitate this sharing of 944 * <code>Image</code> objects may continue to hold onto images 945 * that are no longer in use for an indefinite period of time, 946 * developers are encouraged to implement their own caching of 947 * images by using the {@link #createImage(java.net.URL) createImage} 948 * variant wherever available. 949 * If the image data stored at the specified URL changes, 950 * the <code>Image</code> object returned from this method may 951 * still contain stale information which was fetched from the 952 * URL after a prior call. 953 * Previously loaded image data can be manually discarded by 954 * calling the {@link Image#flush flush} method on the 955 * returned <code>Image</code>. 956 * <p> 957 * This method first checks if there is a security manager installed. 958 * If so, the method calls the security manager's 959 * <code>checkPermission</code> method with the 960 * url.openConnection().getPermission() permission to ensure 961 * that the access to the image is allowed. For compatibility 962 * with pre-1.2 security managers, if the access is denied with 963 * <code>FilePermission</code> or <code>SocketPermission</code>, 964 * the method throws the <code>SecurityException</code> 965 * if the corresponding 1.1-style SecurityManager.checkXXX method 966 * also denies permission. 967 * @param url the URL to use in fetching the pixel data. 968 * @return an image which gets its pixel data from 969 * the specified URL. 970 * @throws SecurityException if a security manager exists and its 971 * checkPermission method doesn't allow 972 * the operation. 973 * @see #createImage(java.net.URL) 974 */ 975 public abstract Image getImage(URL url); 976 977 /** 978 * Returns an image which gets pixel data from the specified file. 979 * The returned Image is a new object which will not be shared 980 * with any other caller of this method or its getImage variant. 981 * <p> 982 * This method first checks if there is a security manager installed. 983 * If so, the method calls the security manager's 984 * <code>checkRead</code> method with the specified file to ensure 985 * that the image creation is allowed. 986 * @param filename the name of a file containing pixel data 987 * in a recognized file format. 988 * @return an image which gets its pixel data from 989 * the specified file. 990 * @throws SecurityException if a security manager exists and its 991 * checkRead method doesn't allow the operation. 992 * @see #getImage(java.lang.String) 993 */ 994 public abstract Image createImage(String filename); 995 996 /** 997 * Returns an image which gets pixel data from the specified URL. 998 * The returned Image is a new object which will not be shared 999 * with any other caller of this method or its getImage variant. 1000 * <p> 1001 * This method first checks if there is a security manager installed. 1002 * If so, the method calls the security manager's 1003 * <code>checkPermission</code> method with the 1004 * url.openConnection().getPermission() permission to ensure 1005 * that the image creation is allowed. For compatibility 1006 * with pre-1.2 security managers, if the access is denied with 1007 * <code>FilePermission</code> or <code>SocketPermission</code>, 1008 * the method throws <code>SecurityException</code> 1009 * if the corresponding 1.1-style SecurityManager.checkXXX method 1010 * also denies permission. 1011 * @param url the URL to use in fetching the pixel data. 1012 * @return an image which gets its pixel data from 1013 * the specified URL. 1014 * @throws SecurityException if a security manager exists and its 1015 * checkPermission method doesn't allow 1016 * the operation. 1017 * @see #getImage(java.net.URL) 1018 */ 1019 public abstract Image createImage(URL url); 1020 1021 /** 1022 * Prepares an image for rendering. 1023 * <p> 1024 * If the values of the width and height arguments are both 1025 * <code>-1</code>, this method prepares the image for rendering 1026 * on the default screen; otherwise, this method prepares an image 1027 * for rendering on the default screen at the specified width and height. 1028 * <p> 1029 * The image data is downloaded asynchronously in another thread, 1030 * and an appropriately scaled screen representation of the image is 1031 * generated. 1032 * <p> 1033 * This method is called by components <code>prepareImage</code> 1034 * methods. 1035 * <p> 1036 * Information on the flags returned by this method can be found 1037 * with the definition of the <code>ImageObserver</code> interface. 1038 1039 * @param image the image for which to prepare a 1040 * screen representation. 1041 * @param width the width of the desired screen 1042 * representation, or <code>-1</code>. 1043 * @param height the height of the desired screen 1044 * representation, or <code>-1</code>. 1045 * @param observer the <code>ImageObserver</code> 1046 * object to be notified as the 1047 * image is being prepared. 1048 * @return <code>true</code> if the image has already been 1049 * fully prepared; <code>false</code> otherwise. 1050 * @see java.awt.Component#prepareImage(java.awt.Image, 1051 * java.awt.image.ImageObserver) 1052 * @see java.awt.Component#prepareImage(java.awt.Image, 1053 * int, int, java.awt.image.ImageObserver) 1054 * @see java.awt.image.ImageObserver 1055 */ 1056 public abstract boolean prepareImage(Image image, int width, int height, 1057 ImageObserver observer); 1058 1059 /** 1060 * Indicates the construction status of a specified image that is 1061 * being prepared for display. 1062 * <p> 1063 * If the values of the width and height arguments are both 1064 * <code>-1</code>, this method returns the construction status of 1065 * a screen representation of the specified image in this toolkit. 1066 * Otherwise, this method returns the construction status of a 1067 * scaled representation of the image at the specified width 1068 * and height. 1069 * <p> 1070 * This method does not cause the image to begin loading. 1071 * An application must call <code>prepareImage</code> to force 1072 * the loading of an image. 1073 * <p> 1074 * This method is called by the component's <code>checkImage</code> 1075 * methods. 1076 * <p> 1077 * Information on the flags returned by this method can be found 1078 * with the definition of the <code>ImageObserver</code> interface. 1079 * @param image the image whose status is being checked. 1080 * @param width the width of the scaled version whose status is 1081 * being checked, or <code>-1</code>. 1082 * @param height the height of the scaled version whose status 1083 * is being checked, or <code>-1</code>. 1084 * @param observer the <code>ImageObserver</code> object to be 1085 * notified as the image is being prepared. 1086 * @return the bitwise inclusive <strong>OR</strong> of the 1087 * <code>ImageObserver</code> flags for the 1088 * image data that is currently available. 1089 * @see java.awt.Toolkit#prepareImage(java.awt.Image, 1090 * int, int, java.awt.image.ImageObserver) 1091 * @see java.awt.Component#checkImage(java.awt.Image, 1092 * java.awt.image.ImageObserver) 1093 * @see java.awt.Component#checkImage(java.awt.Image, 1094 * int, int, java.awt.image.ImageObserver) 1095 * @see java.awt.image.ImageObserver 1096 */ 1097 public abstract int checkImage(Image image, int width, int height, 1098 ImageObserver observer); 1099 1100 /** 1101 * Creates an image with the specified image producer. 1102 * @param producer the image producer to be used. 1103 * @return an image with the specified image producer. 1104 * @see java.awt.Image 1105 * @see java.awt.image.ImageProducer 1106 * @see java.awt.Component#createImage(java.awt.image.ImageProducer) 1107 */ 1108 public abstract Image createImage(ImageProducer producer); 1109 1110 /** 1111 * Creates an image which decodes the image stored in the specified 1112 * byte array. 1113 * <p> 1114 * The data must be in some image format, such as GIF or JPEG, 1115 * that is supported by this toolkit. 1116 * @param imagedata an array of bytes, representing 1117 * image data in a supported image format. 1118 * @return an image. 1119 * @since JDK1.1 1120 */ 1121 public Image createImage(byte[] imagedata) { 1122 return createImage(imagedata, 0, imagedata.length); 1123 } 1124 1125 /** 1126 * Creates an image which decodes the image stored in the specified 1127 * byte array, and at the specified offset and length. 1128 * The data must be in some image format, such as GIF or JPEG, 1129 * that is supported by this toolkit. 1130 * @param imagedata an array of bytes, representing 1131 * image data in a supported image format. 1132 * @param imageoffset the offset of the beginning 1133 * of the data in the array. 1134 * @param imagelength the length of the data in the array. 1135 * @return an image. 1136 * @since JDK1.1 1137 */ 1138 public abstract Image createImage(byte[] imagedata, 1139 int imageoffset, 1140 int imagelength); 1141 1142 /** 1143 * Gets a <code>PrintJob</code> object which is the result of initiating 1144 * a print operation on the toolkit's platform. 1145 * <p> 1146 * Each actual implementation of this method should first check if there 1147 * is a security manager installed. If there is, the method should call 1148 * the security manager's <code>checkPrintJobAccess</code> method to 1149 * ensure initiation of a print operation is allowed. If the default 1150 * implementation of <code>checkPrintJobAccess</code> is used (that is, 1151 * that method is not overriden), then this results in a call to the 1152 * security manager's <code>checkPermission</code> method with a <code> 1153 * RuntimePermission("queuePrintJob")</code> permission. 1154 * 1155 * @param frame the parent of the print dialog. May not be null. 1156 * @param jobtitle the title of the PrintJob. A null title is equivalent 1157 * to "". 1158 * @param props a Properties object containing zero or more properties. 1159 * Properties are not standardized and are not consistent across 1160 * implementations. Because of this, PrintJobs which require job 1161 * and page control should use the version of this function which 1162 * takes JobAttributes and PageAttributes objects. This object 1163 * may be updated to reflect the user's job choices on exit. May 1164 * be null. 1165 * @return a <code>PrintJob</code> object, or <code>null</code> if the 1166 * user cancelled the print job. 1167 * @throws NullPointerException if frame is null 1168 * @throws SecurityException if this thread is not allowed to initiate a 1169 * print job request 1170 * @see java.awt.GraphicsEnvironment#isHeadless 1171 * @see java.awt.PrintJob 1172 * @see java.lang.RuntimePermission 1173 * @since JDK1.1 1174 */ 1175 public abstract PrintJob getPrintJob(Frame frame, String jobtitle, 1176 Properties props); 1177 1178 /** 1179 * Gets a <code>PrintJob</code> object which is the result of initiating 1180 * a print operation on the toolkit's platform. 1181 * <p> 1182 * Each actual implementation of this method should first check if there 1183 * is a security manager installed. If there is, the method should call 1184 * the security manager's <code>checkPrintJobAccess</code> method to 1185 * ensure initiation of a print operation is allowed. If the default 1186 * implementation of <code>checkPrintJobAccess</code> is used (that is, 1187 * that method is not overriden), then this results in a call to the 1188 * security manager's <code>checkPermission</code> method with a <code> 1189 * RuntimePermission("queuePrintJob")</code> permission. 1190 * 1191 * @param frame the parent of the print dialog. May not be null. 1192 * @param jobtitle the title of the PrintJob. A null title is equivalent 1193 * to "". 1194 * @param jobAttributes a set of job attributes which will control the 1195 * PrintJob. The attributes will be updated to reflect the user's 1196 * choices as outlined in the JobAttributes documentation. May be 1197 * null. 1198 * @param pageAttributes a set of page attributes which will control the 1199 * PrintJob. The attributes will be applied to every page in the 1200 * job. The attributes will be updated to reflect the user's 1201 * choices as outlined in the PageAttributes documentation. May be 1202 * null. 1203 * @return a <code>PrintJob</code> object, or <code>null</code> if the 1204 * user cancelled the print job. 1205 * @throws NullPointerException if frame is null 1206 * @throws IllegalArgumentException if pageAttributes specifies differing 1207 * cross feed and feed resolutions. Also if this thread has 1208 * access to the file system and jobAttributes specifies 1209 * print to file, and the specified destination file exists but 1210 * is a directory rather than a regular file, does not exist but 1211 * cannot be created, or cannot be opened for any other reason. 1212 * However in the case of print to file, if a dialog is also 1213 * requested to be displayed then the user will be given an 1214 * opportunity to select a file and proceed with printing. 1215 * The dialog will ensure that the selected output file 1216 * is valid before returning from this method. 1217 * @throws SecurityException if this thread is not allowed to initiate a 1218 * print job request, or if jobAttributes specifies print to file, 1219 * and this thread is not allowed to access the file system 1220 * @see java.awt.PrintJob 1221 * @see java.awt.GraphicsEnvironment#isHeadless 1222 * @see java.lang.RuntimePermission 1223 * @see java.awt.JobAttributes 1224 * @see java.awt.PageAttributes 1225 * @since 1.3 1226 */ 1227 public PrintJob getPrintJob(Frame frame, String jobtitle, 1228 JobAttributes jobAttributes, 1229 PageAttributes pageAttributes) { 1230 // Override to add printing support with new job/page control classes 1231 1232 if (this != Toolkit.getDefaultToolkit()) { 1233 return Toolkit.getDefaultToolkit().getPrintJob(frame, jobtitle, 1234 jobAttributes, 1235 pageAttributes); 1236 } else { 1237 return getPrintJob(frame, jobtitle, null); 1238 } 1239 } 1240 1241 /** 1242 * Emits an audio beep. 1243 * @since JDK1.1 1244 */ 1245 public abstract void beep(); 1246 1247 /** 1248 * Gets the singleton instance of the system Clipboard which interfaces 1249 * with clipboard facilities provided by the native platform. This 1250 * clipboard enables data transfer between Java programs and native 1251 * applications which use native clipboard facilities. 1252 * <p> 1253 * In addition to any and all formats specified in the flavormap.properties 1254 * file, or other file specified by the <code>AWT.DnD.flavorMapFileURL 1255 * </code> Toolkit property, text returned by the system Clipboard's <code> 1256 * getTransferData()</code> method is available in the following flavors: 1257 * <ul> 1258 * <li>DataFlavor.stringFlavor</li> 1259 * <li>DataFlavor.plainTextFlavor (<b>deprecated</b>)</li> 1260 * </ul> 1261 * As with <code>java.awt.datatransfer.StringSelection</code>, if the 1262 * requested flavor is <code>DataFlavor.plainTextFlavor</code>, or an 1263 * equivalent flavor, a Reader is returned. <b>Note:</b> The behavior of 1264 * the system Clipboard's <code>getTransferData()</code> method for <code> 1265 * DataFlavor.plainTextFlavor</code>, and equivalent DataFlavors, is 1266 * inconsistent with the definition of <code>DataFlavor.plainTextFlavor 1267 * </code>. Because of this, support for <code> 1268 * DataFlavor.plainTextFlavor</code>, and equivalent flavors, is 1269 * <b>deprecated</b>. 1270 * <p> 1271 * Each actual implementation of this method should first check if there 1272 * is a security manager installed. If there is, the method should call 1273 * the security manager's <code>checkSystemClipboardAccess</code> method 1274 * to ensure it's ok to to access the system clipboard. If the default 1275 * implementation of <code>checkSystemClipboardAccess</code> is used (that 1276 * is, that method is not overriden), then this results in a call to the 1277 * security manager's <code>checkPermission</code> method with an <code> 1278 * AWTPermission("accessClipboard")</code> permission. 1279 * 1280 * @return the system Clipboard 1281 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 1282 * returns true 1283 * @see java.awt.GraphicsEnvironment#isHeadless 1284 * @see java.awt.datatransfer.Clipboard 1285 * @see java.awt.datatransfer.StringSelection 1286 * @see java.awt.datatransfer.DataFlavor#stringFlavor 1287 * @see java.awt.datatransfer.DataFlavor#plainTextFlavor 1288 * @see java.io.Reader 1289 * @see java.awt.AWTPermission 1290 * @since JDK1.1 1291 */ 1292 public abstract Clipboard getSystemClipboard() 1293 throws HeadlessException; 1294 1295 /** 1296 * Gets the singleton instance of the system selection as a 1297 * <code>Clipboard</code> object. This allows an application to read and 1298 * modify the current, system-wide selection. 1299 * <p> 1300 * An application is responsible for updating the system selection whenever 1301 * the user selects text, using either the mouse or the keyboard. 1302 * Typically, this is implemented by installing a 1303 * <code>FocusListener</code> on all <code>Component</code>s which support 1304 * text selection, and, between <code>FOCUS_GAINED</code> and 1305 * <code>FOCUS_LOST</code> events delivered to that <code>Component</code>, 1306 * updating the system selection <code>Clipboard</code> when the selection 1307 * changes inside the <code>Component</code>. Properly updating the system 1308 * selection ensures that a Java application will interact correctly with 1309 * native applications and other Java applications running simultaneously 1310 * on the system. Note that <code>java.awt.TextComponent</code> and 1311 * <code>javax.swing.text.JTextComponent</code> already adhere to this 1312 * policy. When using these classes, and their subclasses, developers need 1313 * not write any additional code. 1314 * <p> 1315 * Some platforms do not support a system selection <code>Clipboard</code>. 1316 * On those platforms, this method will return <code>null</code>. In such a 1317 * case, an application is absolved from its responsibility to update the 1318 * system selection <code>Clipboard</code> as described above. 1319 * <p> 1320 * Each actual implementation of this method should first check if there 1321 * is a <code>SecurityManager</code> installed. If there is, the method 1322 * should call the <code>SecurityManager</code>'s 1323 * <code>checkSystemClipboardAccess</code> method to ensure that client 1324 * code has access the system selection. If the default implementation of 1325 * <code>checkSystemClipboardAccess</code> is used (that is, if the method 1326 * is not overridden), then this results in a call to the 1327 * <code>SecurityManager</code>'s <code>checkPermission</code> method with 1328 * an <code>AWTPermission("accessClipboard")</code> permission. 1329 * 1330 * @return the system selection as a <code>Clipboard</code>, or 1331 * <code>null</code> if the native platform does not support a 1332 * system selection <code>Clipboard</code> 1333 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 1334 * returns true 1335 * 1336 * @see java.awt.datatransfer.Clipboard 1337 * @see java.awt.event.FocusListener 1338 * @see java.awt.event.FocusEvent#FOCUS_GAINED 1339 * @see java.awt.event.FocusEvent#FOCUS_LOST 1340 * @see TextComponent 1341 * @see javax.swing.text.JTextComponent 1342 * @see AWTPermission 1343 * @see GraphicsEnvironment#isHeadless 1344 * @since 1.4 1345 */ 1346 public Clipboard getSystemSelection() throws HeadlessException { 1347 GraphicsEnvironment.checkHeadless(); 1348 1349 if (this != Toolkit.getDefaultToolkit()) { 1350 return Toolkit.getDefaultToolkit().getSystemSelection(); 1351 } else { 1352 GraphicsEnvironment.checkHeadless(); 1353 return null; 1354 } 1355 } 1356 1357 /** 1358 * Determines which modifier key is the appropriate accelerator 1359 * key for menu shortcuts. 1360 * <p> 1361 * Menu shortcuts, which are embodied in the 1362 * <code>MenuShortcut</code> class, are handled by the 1363 * <code>MenuBar</code> class. 1364 * <p> 1365 * By default, this method returns <code>Event.CTRL_MASK</code>. 1366 * Toolkit implementations should override this method if the 1367 * <b>Control</b> key isn't the correct key for accelerators. 1368 * @return the modifier mask on the <code>Event</code> class 1369 * that is used for menu shortcuts on this toolkit. 1370 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 1371 * returns true 1372 * @see java.awt.GraphicsEnvironment#isHeadless 1373 * @see java.awt.MenuBar 1374 * @see java.awt.MenuShortcut 1375 * @since JDK1.1 1376 */ 1377 public int getMenuShortcutKeyMask() throws HeadlessException { 1378 GraphicsEnvironment.checkHeadless(); 1379 1380 return Event.CTRL_MASK; 1381 } 1382 1383 /** 1384 * Returns whether the given locking key on the keyboard is currently in 1385 * its "on" state. 1386 * Valid key codes are 1387 * {@link java.awt.event.KeyEvent#VK_CAPS_LOCK VK_CAPS_LOCK}, 1388 * {@link java.awt.event.KeyEvent#VK_NUM_LOCK VK_NUM_LOCK}, 1389 * {@link java.awt.event.KeyEvent#VK_SCROLL_LOCK VK_SCROLL_LOCK}, and 1390 * {@link java.awt.event.KeyEvent#VK_KANA_LOCK VK_KANA_LOCK}. 1391 * 1392 * @exception java.lang.IllegalArgumentException if <code>keyCode</code> 1393 * is not one of the valid key codes 1394 * @exception java.lang.UnsupportedOperationException if the host system doesn't 1395 * allow getting the state of this key programmatically, or if the keyboard 1396 * doesn't have this key 1397 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 1398 * returns true 1399 * @see java.awt.GraphicsEnvironment#isHeadless 1400 * @since 1.3 1401 */ 1402 public boolean getLockingKeyState(int keyCode) 1403 throws UnsupportedOperationException 1404 { 1405 GraphicsEnvironment.checkHeadless(); 1406 1407 if (! (keyCode == KeyEvent.VK_CAPS_LOCK || keyCode == KeyEvent.VK_NUM_LOCK || 1408 keyCode == KeyEvent.VK_SCROLL_LOCK || keyCode == KeyEvent.VK_KANA_LOCK)) { 1409 throw new IllegalArgumentException("invalid key for Toolkit.getLockingKeyState"); 1410 } 1411 throw new UnsupportedOperationException("Toolkit.getLockingKeyState"); 1412 } 1413 1414 /** 1415 * Sets the state of the given locking key on the keyboard. 1416 * Valid key codes are 1417 * {@link java.awt.event.KeyEvent#VK_CAPS_LOCK VK_CAPS_LOCK}, 1418 * {@link java.awt.event.KeyEvent#VK_NUM_LOCK VK_NUM_LOCK}, 1419 * {@link java.awt.event.KeyEvent#VK_SCROLL_LOCK VK_SCROLL_LOCK}, and 1420 * {@link java.awt.event.KeyEvent#VK_KANA_LOCK VK_KANA_LOCK}. 1421 * <p> 1422 * Depending on the platform, setting the state of a locking key may 1423 * involve event processing and therefore may not be immediately 1424 * observable through getLockingKeyState. 1425 * 1426 * @exception java.lang.IllegalArgumentException if <code>keyCode</code> 1427 * is not one of the valid key codes 1428 * @exception java.lang.UnsupportedOperationException if the host system doesn't 1429 * allow setting the state of this key programmatically, or if the keyboard 1430 * doesn't have this key 1431 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 1432 * returns true 1433 * @see java.awt.GraphicsEnvironment#isHeadless 1434 * @since 1.3 1435 */ 1436 public void setLockingKeyState(int keyCode, boolean on) 1437 throws UnsupportedOperationException 1438 { 1439 GraphicsEnvironment.checkHeadless(); 1440 1441 if (! (keyCode == KeyEvent.VK_CAPS_LOCK || keyCode == KeyEvent.VK_NUM_LOCK || 1442 keyCode == KeyEvent.VK_SCROLL_LOCK || keyCode == KeyEvent.VK_KANA_LOCK)) { 1443 throw new IllegalArgumentException("invalid key for Toolkit.setLockingKeyState"); 1444 } 1445 throw new UnsupportedOperationException("Toolkit.setLockingKeyState"); 1446 } 1447 1448 /** 1449 * Give native peers the ability to query the native container 1450 * given a native component (eg the direct parent may be lightweight). 1451 */ 1452 protected static Container getNativeContainer(Component c) { 1453 return c.getNativeContainer(); 1454 } 1455 1456 /** 1457 * Creates a new custom cursor object. 1458 * If the image to display is invalid, the cursor will be hidden (made 1459 * completely transparent), and the hotspot will be set to (0, 0). 1460 * 1461 * <p>Note that multi-frame images are invalid and may cause this 1462 * method to hang. 1463 * 1464 * @param cursor the image to display when the cursor is actived 1465 * @param hotSpot the X and Y of the large cursor's hot spot; the 1466 * hotSpot values must be less than the Dimension returned by 1467 * <code>getBestCursorSize</code> 1468 * @param name a localized description of the cursor, for Java Accessibility use 1469 * @exception IndexOutOfBoundsException if the hotSpot values are outside 1470 * the bounds of the cursor 1471 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 1472 * returns true 1473 * @see java.awt.GraphicsEnvironment#isHeadless 1474 * @since 1.2 1475 */ 1476 public Cursor createCustomCursor(Image cursor, Point hotSpot, String name) 1477 throws IndexOutOfBoundsException, HeadlessException 1478 { 1479 // Override to implement custom cursor support. 1480 if (this != Toolkit.getDefaultToolkit()) { 1481 return Toolkit.getDefaultToolkit(). 1482 createCustomCursor(cursor, hotSpot, name); 1483 } else { 1484 return new Cursor(Cursor.DEFAULT_CURSOR); 1485 } 1486 } 1487 1488 /** 1489 * Returns the supported cursor dimension which is closest to the desired 1490 * sizes. Systems which only support a single cursor size will return that 1491 * size regardless of the desired sizes. Systems which don't support custom 1492 * cursors will return a dimension of 0, 0. <p> 1493 * Note: if an image is used whose dimensions don't match a supported size 1494 * (as returned by this method), the Toolkit implementation will attempt to 1495 * resize the image to a supported size. 1496 * Since converting low-resolution images is difficult, 1497 * no guarantees are made as to the quality of a cursor image which isn't a 1498 * supported size. It is therefore recommended that this method 1499 * be called and an appropriate image used so no image conversion is made. 1500 * 1501 * @param preferredWidth the preferred cursor width the component would like 1502 * to use. 1503 * @param preferredHeight the preferred cursor height the component would like 1504 * to use. 1505 * @return the closest matching supported cursor size, or a dimension of 0,0 if 1506 * the Toolkit implementation doesn't support custom cursors. 1507 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 1508 * returns true 1509 * @see java.awt.GraphicsEnvironment#isHeadless 1510 * @since 1.2 1511 */ 1512 public Dimension getBestCursorSize(int preferredWidth, 1513 int preferredHeight) throws HeadlessException { 1514 GraphicsEnvironment.checkHeadless(); 1515 1516 // Override to implement custom cursor support. 1517 if (this != Toolkit.getDefaultToolkit()) { 1518 return Toolkit.getDefaultToolkit(). 1519 getBestCursorSize(preferredWidth, preferredHeight); 1520 } else { 1521 return new Dimension(0, 0); 1522 } 1523 } 1524 1525 /** 1526 * Returns the maximum number of colors the Toolkit supports in a custom cursor 1527 * palette.<p> 1528 * Note: if an image is used which has more colors in its palette than 1529 * the supported maximum, the Toolkit implementation will attempt to flatten the 1530 * palette to the maximum. Since converting low-resolution images is difficult, 1531 * no guarantees are made as to the quality of a cursor image which has more 1532 * colors than the system supports. It is therefore recommended that this method 1533 * be called and an appropriate image used so no image conversion is made. 1534 * 1535 * @return the maximum number of colors, or zero if custom cursors are not 1536 * supported by this Toolkit implementation. 1537 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 1538 * returns true 1539 * @see java.awt.GraphicsEnvironment#isHeadless 1540 * @since 1.2 1541 */ 1542 public int getMaximumCursorColors() throws HeadlessException { 1543 GraphicsEnvironment.checkHeadless(); 1544 1545 // Override to implement custom cursor support. 1546 if (this != Toolkit.getDefaultToolkit()) { 1547 return Toolkit.getDefaultToolkit().getMaximumCursorColors(); 1548 } else { 1549 return 0; 1550 } 1551 } 1552 1553 /** 1554 * Returns whether Toolkit supports this state for 1555 * <code>Frame</code>s. This method tells whether the <em>UI 1556 * concept</em> of, say, maximization or iconification is 1557 * supported. It will always return false for "compound" states 1558 * like <code>Frame.ICONIFIED|Frame.MAXIMIZED_VERT</code>. 1559 * In other words, the rule of thumb is that only queries with a 1560 * single frame state constant as an argument are meaningful. 1561 * <p>Note that supporting a given concept is a platform- 1562 * dependent feature. Due to native limitations the Toolkit 1563 * object may report a particular state as supported, however at 1564 * the same time the Toolkit object will be unable to apply the 1565 * state to a given frame. This circumstance has two following 1566 * consequences: 1567 * <ul> 1568 * <li>Only the return value of {@code false} for the present 1569 * method actually indicates that the given state is not 1570 * supported. If the method returns {@code true} the given state 1571 * may still be unsupported and/or unavailable for a particular 1572 * frame. 1573 * <li>The developer should consider examining the value of the 1574 * {@link java.awt.event.WindowEvent#getNewState} method of the 1575 * {@code WindowEvent} received through the {@link 1576 * java.awt.event.WindowStateListener}, rather than assuming 1577 * that the state given to the {@code setExtendedState()} method 1578 * will be definitely applied. For more information see the 1579 * documentation for the {@link Frame#setExtendedState} method. 1580 * </ul> 1581 * 1582 * @param state one of named frame state constants. 1583 * @return <code>true</code> is this frame state is supported by 1584 * this Toolkit implementation, <code>false</code> otherwise. 1585 * @exception HeadlessException 1586 * if <code>GraphicsEnvironment.isHeadless()</code> 1587 * returns <code>true</code>. 1588 * @see java.awt.Window#addWindowStateListener 1589 * @since 1.4 1590 */ 1591 public boolean isFrameStateSupported(int state) 1592 throws HeadlessException 1593 { 1594 GraphicsEnvironment.checkHeadless(); 1595 1596 if (this != Toolkit.getDefaultToolkit()) { 1597 return Toolkit.getDefaultToolkit(). 1598 isFrameStateSupported(state); 1599 } else { 1600 return (state == Frame.NORMAL); // others are not guaranteed 1601 } 1602 } 1603 1604 /** 1605 * Support for I18N: any visible strings should be stored in 1606 * sun.awt.resources.awt.properties. The ResourceBundle is stored 1607 * here, so that only one copy is maintained. 1608 */ 1609 private static ResourceBundle resources; 1610 1611 /** 1612 * Initialize JNI field and method ids 1613 */ 1614 private static native void initIDs(); 1615 1616 /** 1617 * WARNING: This is a temporary workaround for a problem in the 1618 * way the AWT loads native libraries. A number of classes in the 1619 * AWT package have a native method, initIDs(), which initializes 1620 * the JNI field and method ids used in the native portion of 1621 * their implementation. 1622 * 1623 * Since the use and storage of these ids is done by the 1624 * implementation libraries, the implementation of these method is 1625 * provided by the particular AWT implementations (for example, 1626 * "Toolkit"s/Peer), such as Motif, Microsoft Windows, or Tiny. The 1627 * problem is that this means that the native libraries must be 1628 * loaded by the java.* classes, which do not necessarily know the 1629 * names of the libraries to load. A better way of doing this 1630 * would be to provide a separate library which defines java.awt.* 1631 * initIDs, and exports the relevant symbols out to the 1632 * implementation libraries. 1633 * 1634 * For now, we know it's done by the implementation, and we assume 1635 * that the name of the library is "awt". -br. 1636 * 1637 * If you change loadLibraries(), please add the change to 1638 * java.awt.image.ColorModel.loadLibraries(). Unfortunately, 1639 * classes can be loaded in java.awt.image that depend on 1640 * libawt and there is no way to call Toolkit.loadLibraries() 1641 * directly. -hung 1642 */ 1643 private static boolean loaded = false; 1644 static void loadLibraries() { 1645 if (!loaded) { 1646 java.security.AccessController.doPrivileged( 1647 new java.security.PrivilegedAction<Void>() { 1648 public Void run() { 1649 System.loadLibrary("awt"); 1650 return null; 1651 } 1652 }); 1653 loaded = true; 1654 } 1655 } 1656 1657 static { 1658 java.security.AccessController.doPrivileged( 1659 new java.security.PrivilegedAction<Void>() { 1660 public Void run() { 1661 try { 1662 resources = 1663 ResourceBundle.getBundle("sun.awt.resources.awt", 1664 CoreResourceBundleControl.getRBControlInstance()); 1665 } catch (MissingResourceException e) { 1666 // No resource file; defaults will be used. 1667 } 1668 return null; 1669 } 1670 }); 1671 1672 // ensure that the proper libraries are loaded 1673 loadLibraries(); 1674 initAssistiveTechnologies(); 1675 if (!GraphicsEnvironment.isHeadless()) { 1676 initIDs(); 1677 } 1678 } 1679 1680 /** 1681 * Gets a property with the specified key and default. 1682 * This method returns defaultValue if the property is not found. 1683 */ 1684 public static String getProperty(String key, String defaultValue) { 1685 if (resources != null) { 1686 try { 1687 return resources.getString(key); 1688 } 1689 catch (MissingResourceException e) {} 1690 } 1691 1692 return defaultValue; 1693 } 1694 1695 /** 1696 * Get the application's or applet's EventQueue instance. 1697 * Depending on the Toolkit implementation, different EventQueues 1698 * may be returned for different applets. Applets should 1699 * therefore not assume that the EventQueue instance returned 1700 * by this method will be shared by other applets or the system. 1701 * 1702 * <p>First, if there is a security manager, its 1703 * <code>checkAwtEventQueueAccess</code> 1704 * method is called. 1705 * If the default implementation of <code>checkAwtEventQueueAccess</code> 1706 * is used (that is, that method is not overriden), then this results in 1707 * a call to the security manager's <code>checkPermission</code> method 1708 * with an <code>AWTPermission("accessEventQueue")</code> permission. 1709 * 1710 * @return the <code>EventQueue</code> object 1711 * @throws SecurityException 1712 * if a security manager exists and its <code>{@link 1713 * java.lang.SecurityManager#checkAwtEventQueueAccess}</code> 1714 * method denies access to the <code>EventQueue</code> 1715 * @see java.awt.AWTPermission 1716 */ 1717 public final EventQueue getSystemEventQueue() { 1718 SecurityManager security = System.getSecurityManager(); 1719 if (security != null) { 1720 security.checkAwtEventQueueAccess(); 1721 } 1722 return getSystemEventQueueImpl(); 1723 } 1724 1725 /** 1726 * Gets the application's or applet's <code>EventQueue</code> 1727 * instance, without checking access. For security reasons, 1728 * this can only be called from a <code>Toolkit</code> subclass. 1729 * @return the <code>EventQueue</code> object 1730 */ 1731 protected abstract EventQueue getSystemEventQueueImpl(); 1732 1733 /* Accessor method for use by AWT package routines. */ 1734 static EventQueue getEventQueue() { 1735 return getDefaultToolkit().getSystemEventQueueImpl(); 1736 } 1737 1738 /** 1739 * Creates the peer for a DragSourceContext. 1740 * Always throws InvalidDndOperationException if 1741 * GraphicsEnvironment.isHeadless() returns true. 1742 * @see java.awt.GraphicsEnvironment#isHeadless 1743 */ 1744 public abstract DragSourceContextPeer createDragSourceContextPeer(DragGestureEvent dge) throws InvalidDnDOperationException; 1745 1746 /** 1747 * Creates a concrete, platform dependent, subclass of the abstract 1748 * DragGestureRecognizer class requested, and associates it with the 1749 * DragSource, Component and DragGestureListener specified. 1750 * 1751 * subclasses should override this to provide their own implementation 1752 * 1753 * @param abstractRecognizerClass The abstract class of the required recognizer 1754 * @param ds The DragSource 1755 * @param c The Component target for the DragGestureRecognizer 1756 * @param srcActions The actions permitted for the gesture 1757 * @param dgl The DragGestureListener 1758 * 1759 * @return the new object or null. Always returns null if 1760 * GraphicsEnvironment.isHeadless() returns true. 1761 * @see java.awt.GraphicsEnvironment#isHeadless 1762 */ 1763 public <T extends DragGestureRecognizer> T 1764 createDragGestureRecognizer(Class<T> abstractRecognizerClass, 1765 DragSource ds, Component c, int srcActions, 1766 DragGestureListener dgl) 1767 { 1768 return null; 1769 } 1770 1771 /** 1772 * Obtains a value for the specified desktop property. 1773 * 1774 * A desktop property is a uniquely named value for a resource that 1775 * is Toolkit global in nature. Usually it also is an abstract 1776 * representation for an underlying platform dependent desktop setting. 1777 * For more information on desktop properties supported by the AWT see 1778 * <a href="doc-files/DesktopProperties.html">AWT Desktop Properties</a>. 1779 */ 1780 public final synchronized Object getDesktopProperty(String propertyName) { 1781 // This is a workaround for headless toolkits. It would be 1782 // better to override this method but it is declared final. 1783 // "this instanceof" syntax defeats polymorphism. 1784 // --mm, 03/03/00 1785 if (this instanceof HeadlessToolkit) { 1786 return ((HeadlessToolkit)this).getUnderlyingToolkit() 1787 .getDesktopProperty(propertyName); 1788 } 1789 1790 if (desktopProperties.isEmpty()) { 1791 initializeDesktopProperties(); 1792 } 1793 1794 Object value; 1795 1796 // This property should never be cached 1797 if (propertyName.equals("awt.dynamicLayoutSupported")) { 1798 value = lazilyLoadDesktopProperty(propertyName); 1799 return value; 1800 } 1801 1802 value = desktopProperties.get(propertyName); 1803 1804 if (value == null) { 1805 value = lazilyLoadDesktopProperty(propertyName); 1806 1807 if (value != null) { 1808 setDesktopProperty(propertyName, value); 1809 } 1810 } 1811 1812 /* for property "awt.font.desktophints" */ 1813 if (value instanceof RenderingHints) { 1814 value = ((RenderingHints)value).clone(); 1815 } 1816 1817 return value; 1818 } 1819 1820 /** 1821 * Sets the named desktop property to the specified value and fires a 1822 * property change event to notify any listeners that the value has changed. 1823 */ 1824 protected final void setDesktopProperty(String name, Object newValue) { 1825 // This is a workaround for headless toolkits. It would be 1826 // better to override this method but it is declared final. 1827 // "this instanceof" syntax defeats polymorphism. 1828 // --mm, 03/03/00 1829 if (this instanceof HeadlessToolkit) { 1830 ((HeadlessToolkit)this).getUnderlyingToolkit() 1831 .setDesktopProperty(name, newValue); 1832 return; 1833 } 1834 Object oldValue; 1835 1836 synchronized (this) { 1837 oldValue = desktopProperties.get(name); 1838 desktopProperties.put(name, newValue); 1839 } 1840 1841 // Don't fire change event if old and new values are null. 1842 // It helps to avoid recursive resending of WM_THEMECHANGED 1843 if (oldValue != null || newValue != null) { 1844 desktopPropsSupport.firePropertyChange(name, oldValue, newValue); 1845 } 1846 } 1847 1848 /** 1849 * an opportunity to lazily evaluate desktop property values. 1850 */ 1851 protected Object lazilyLoadDesktopProperty(String name) { 1852 return null; 1853 } 1854 1855 /** 1856 * initializeDesktopProperties 1857 */ 1858 protected void initializeDesktopProperties() { 1859 } 1860 1861 /** 1862 * Adds the specified property change listener for the named desktop 1863 * property. When a {@link java.beans.PropertyChangeListenerProxy} object is added, 1864 * its property name is ignored, and the wrapped listener is added. 1865 * If {@code name} is {@code null} or {@code pcl} is {@code null}, 1866 * no exception is thrown and no action is performed. 1867 * 1868 * @param name The name of the property to listen for 1869 * @param pcl The property change listener 1870 * @see PropertyChangeSupport#addPropertyChangeListener(String, 1871 PropertyChangeListener) 1872 * @since 1.2 1873 */ 1874 public void addPropertyChangeListener(String name, PropertyChangeListener pcl) { 1875 desktopPropsSupport.addPropertyChangeListener(name, pcl); 1876 } 1877 1878 /** 1879 * Removes the specified property change listener for the named 1880 * desktop property. When a {@link java.beans.PropertyChangeListenerProxy} object 1881 * is removed, its property name is ignored, and 1882 * the wrapped listener is removed. 1883 * If {@code name} is {@code null} or {@code pcl} is {@code null}, 1884 * no exception is thrown and no action is performed. 1885 * 1886 * @param name The name of the property to remove 1887 * @param pcl The property change listener 1888 * @see PropertyChangeSupport#removePropertyChangeListener(String, 1889 PropertyChangeListener) 1890 * @since 1.2 1891 */ 1892 public void removePropertyChangeListener(String name, PropertyChangeListener pcl) { 1893 desktopPropsSupport.removePropertyChangeListener(name, pcl); 1894 } 1895 1896 /** 1897 * Returns an array of all the property change listeners 1898 * registered on this toolkit. The returned array 1899 * contains {@link java.beans.PropertyChangeListenerProxy} objects 1900 * that associate listeners with the names of desktop properties. 1901 * 1902 * @return all of this toolkit's {@link PropertyChangeListener} 1903 * objects wrapped in {@code java.beans.PropertyChangeListenerProxy} objects 1904 * or an empty array if no listeners are added 1905 * 1906 * @see PropertyChangeSupport#getPropertyChangeListeners() 1907 * @since 1.4 1908 */ 1909 public PropertyChangeListener[] getPropertyChangeListeners() { 1910 return desktopPropsSupport.getPropertyChangeListeners(); 1911 } 1912 1913 /** 1914 * Returns an array of all property change listeners 1915 * associated with the specified name of a desktop property. 1916 * 1917 * @param propertyName the named property 1918 * @return all of the {@code PropertyChangeListener} objects 1919 * associated with the specified name of a desktop property 1920 * or an empty array if no such listeners are added 1921 * 1922 * @see PropertyChangeSupport#getPropertyChangeListeners(String) 1923 * @since 1.4 1924 */ 1925 public PropertyChangeListener[] getPropertyChangeListeners(String propertyName) { 1926 return desktopPropsSupport.getPropertyChangeListeners(propertyName); 1927 } 1928 1929 protected final Map<String,Object> desktopProperties = 1930 new HashMap<String,Object>(); 1931 protected final PropertyChangeSupport desktopPropsSupport = 1932 Toolkit.createPropertyChangeSupport(this); 1933 1934 /** 1935 * Returns whether the always-on-top mode is supported by this toolkit. 1936 * To detect whether the always-on-top mode is supported for a 1937 * particular Window, use {@link Window#isAlwaysOnTopSupported}. 1938 * @return <code>true</code>, if current toolkit supports the always-on-top mode, 1939 * otherwise returns <code>false</code> 1940 * @see Window#isAlwaysOnTopSupported 1941 * @see Window#setAlwaysOnTop(boolean) 1942 * @since 1.6 1943 */ 1944 public boolean isAlwaysOnTopSupported() { 1945 return true; 1946 } 1947 1948 /** 1949 * Returns whether the given modality type is supported by this toolkit. If 1950 * a dialog with unsupported modality type is created, then 1951 * <code>Dialog.ModalityType.MODELESS</code> is used instead. 1952 * 1953 * @param modalityType modality type to be checked for support by this toolkit 1954 * 1955 * @return <code>true</code>, if current toolkit supports given modality 1956 * type, <code>false</code> otherwise 1957 * 1958 * @see java.awt.Dialog.ModalityType 1959 * @see java.awt.Dialog#getModalityType 1960 * @see java.awt.Dialog#setModalityType 1961 * 1962 * @since 1.6 1963 */ 1964 public abstract boolean isModalityTypeSupported(Dialog.ModalityType modalityType); 1965 1966 /** 1967 * Returns whether the given modal exclusion type is supported by this 1968 * toolkit. If an unsupported modal exclusion type property is set on a window, 1969 * then <code>Dialog.ModalExclusionType.NO_EXCLUDE</code> is used instead. 1970 * 1971 * @param modalExclusionType modal exclusion type to be checked for support by this toolkit 1972 * 1973 * @return <code>true</code>, if current toolkit supports given modal exclusion 1974 * type, <code>false</code> otherwise 1975 * 1976 * @see java.awt.Dialog.ModalExclusionType 1977 * @see java.awt.Window#getModalExclusionType 1978 * @see java.awt.Window#setModalExclusionType 1979 * 1980 * @since 1.6 1981 */ 1982 public abstract boolean isModalExclusionTypeSupported(Dialog.ModalExclusionType modalExclusionType); 1983 1984 // 8014718: logging has been removed from SunToolkit 1985 1986 private static final int LONG_BITS = 64; 1987 private int[] calls = new int[LONG_BITS]; 1988 private static volatile long enabledOnToolkitMask; 1989 private AWTEventListener eventListener = null; 1990 private WeakHashMap<AWTEventListener, SelectiveAWTEventListener> listener2SelectiveListener = new WeakHashMap<>(); 1991 1992 /* 1993 * Extracts a "pure" AWTEventListener from a AWTEventListenerProxy, 1994 * if the listener is proxied. 1995 */ 1996 static private AWTEventListener deProxyAWTEventListener(AWTEventListener l) 1997 { 1998 AWTEventListener localL = l; 1999 2000 if (localL == null) { 2001 return null; 2002 } 2003 // if user passed in a AWTEventListenerProxy object, extract 2004 // the listener 2005 if (l instanceof AWTEventListenerProxy) { 2006 localL = ((AWTEventListenerProxy)l).getListener(); 2007 } 2008 return localL; 2009 } 2010 2011 /** 2012 * Adds an AWTEventListener to receive all AWTEvents dispatched 2013 * system-wide that conform to the given <code>eventMask</code>. 2014 * <p> 2015 * First, if there is a security manager, its <code>checkPermission</code> 2016 * method is called with an 2017 * <code>AWTPermission("listenToAllAWTEvents")</code> permission. 2018 * This may result in a SecurityException. 2019 * <p> 2020 * <code>eventMask</code> is a bitmask of event types to receive. 2021 * It is constructed by bitwise OR-ing together the event masks 2022 * defined in <code>AWTEvent</code>. 2023 * <p> 2024 * Note: event listener use is not recommended for normal 2025 * application use, but are intended solely to support special 2026 * purpose facilities including support for accessibility, 2027 * event record/playback, and diagnostic tracing. 2028 * 2029 * If listener is null, no exception is thrown and no action is performed. 2030 * 2031 * @param listener the event listener. 2032 * @param eventMask the bitmask of event types to receive 2033 * @throws SecurityException 2034 * if a security manager exists and its 2035 * <code>checkPermission</code> method doesn't allow the operation. 2036 * @see #removeAWTEventListener 2037 * @see #getAWTEventListeners 2038 * @see SecurityManager#checkPermission 2039 * @see java.awt.AWTEvent 2040 * @see java.awt.AWTPermission 2041 * @see java.awt.event.AWTEventListener 2042 * @see java.awt.event.AWTEventListenerProxy 2043 * @since 1.2 2044 */ 2045 public void addAWTEventListener(AWTEventListener listener, long eventMask) { 2046 AWTEventListener localL = deProxyAWTEventListener(listener); 2047 2048 if (localL == null) { 2049 return; 2050 } 2051 SecurityManager security = System.getSecurityManager(); 2052 if (security != null) { 2053 security.checkPermission(SecurityConstants.AWT.ALL_AWT_EVENTS_PERMISSION); 2054 } 2055 synchronized (this) { 2056 SelectiveAWTEventListener selectiveListener = 2057 listener2SelectiveListener.get(localL); 2058 2059 if (selectiveListener == null) { 2060 // Create a new selectiveListener. 2061 selectiveListener = new SelectiveAWTEventListener(localL, 2062 eventMask); 2063 listener2SelectiveListener.put(localL, selectiveListener); 2064 eventListener = ToolkitEventMulticaster.add(eventListener, 2065 selectiveListener); 2066 } 2067 // OR the eventMask into the selectiveListener's event mask. 2068 selectiveListener.orEventMasks(eventMask); 2069 2070 enabledOnToolkitMask |= eventMask; 2071 2072 long mask = eventMask; 2073 for (int i=0; i<LONG_BITS; i++) { 2074 // If no bits are set, break out of loop. 2075 if (mask == 0) { 2076 break; 2077 } 2078 if ((mask & 1L) != 0) { // Always test bit 0. 2079 calls[i]++; 2080 } 2081 mask >>>= 1; // Right shift, fill with zeros on left. 2082 } 2083 } 2084 } 2085 2086 /** 2087 * Removes an AWTEventListener from receiving dispatched AWTEvents. 2088 * <p> 2089 * First, if there is a security manager, its <code>checkPermission</code> 2090 * method is called with an 2091 * <code>AWTPermission("listenToAllAWTEvents")</code> permission. 2092 * This may result in a SecurityException. 2093 * <p> 2094 * Note: event listener use is not recommended for normal 2095 * application use, but are intended solely to support special 2096 * purpose facilities including support for accessibility, 2097 * event record/playback, and diagnostic tracing. 2098 * 2099 * If listener is null, no exception is thrown and no action is performed. 2100 * 2101 * @param listener the event listener. 2102 * @throws SecurityException 2103 * if a security manager exists and its 2104 * <code>checkPermission</code> method doesn't allow the operation. 2105 * @see #addAWTEventListener 2106 * @see #getAWTEventListeners 2107 * @see SecurityManager#checkPermission 2108 * @see java.awt.AWTEvent 2109 * @see java.awt.AWTPermission 2110 * @see java.awt.event.AWTEventListener 2111 * @see java.awt.event.AWTEventListenerProxy 2112 * @since 1.2 2113 */ 2114 public void removeAWTEventListener(AWTEventListener listener) { 2115 AWTEventListener localL = deProxyAWTEventListener(listener); 2116 2117 if (listener == null) { 2118 return; 2119 } 2120 SecurityManager security = System.getSecurityManager(); 2121 if (security != null) { 2122 security.checkPermission(SecurityConstants.AWT.ALL_AWT_EVENTS_PERMISSION); 2123 } 2124 2125 synchronized (this) { 2126 SelectiveAWTEventListener selectiveListener = 2127 listener2SelectiveListener.get(localL); 2128 2129 if (selectiveListener != null) { 2130 listener2SelectiveListener.remove(localL); 2131 int[] listenerCalls = selectiveListener.getCalls(); 2132 for (int i=0; i<LONG_BITS; i++) { 2133 calls[i] -= listenerCalls[i]; 2134 assert calls[i] >= 0: "Negative Listeners count"; 2135 2136 if (calls[i] == 0) { 2137 enabledOnToolkitMask &= ~(1L<<i); 2138 } 2139 } 2140 } 2141 eventListener = ToolkitEventMulticaster.remove(eventListener, 2142 (selectiveListener == null) ? localL : selectiveListener); 2143 } 2144 } 2145 2146 static boolean enabledOnToolkit(long eventMask) { 2147 return (enabledOnToolkitMask & eventMask) != 0; 2148 } 2149 2150 synchronized int countAWTEventListeners(long eventMask) { 2151 int ci = 0; 2152 for (; eventMask != 0; eventMask >>>= 1, ci++) { 2153 } 2154 ci--; 2155 return calls[ci]; 2156 } 2157 /** 2158 * Returns an array of all the <code>AWTEventListener</code>s 2159 * registered on this toolkit. 2160 * If there is a security manager, its {@code checkPermission} 2161 * method is called with an 2162 * {@code AWTPermission("listenToAllAWTEvents")} permission. 2163 * This may result in a SecurityException. 2164 * Listeners can be returned 2165 * within <code>AWTEventListenerProxy</code> objects, which also contain 2166 * the event mask for the given listener. 2167 * Note that listener objects 2168 * added multiple times appear only once in the returned array. 2169 * 2170 * @return all of the <code>AWTEventListener</code>s or an empty 2171 * array if no listeners are currently registered 2172 * @throws SecurityException 2173 * if a security manager exists and its 2174 * <code>checkPermission</code> method doesn't allow the operation. 2175 * @see #addAWTEventListener 2176 * @see #removeAWTEventListener 2177 * @see SecurityManager#checkPermission 2178 * @see java.awt.AWTEvent 2179 * @see java.awt.AWTPermission 2180 * @see java.awt.event.AWTEventListener 2181 * @see java.awt.event.AWTEventListenerProxy 2182 * @since 1.4 2183 */ 2184 public AWTEventListener[] getAWTEventListeners() { 2185 SecurityManager security = System.getSecurityManager(); 2186 if (security != null) { 2187 security.checkPermission(SecurityConstants.AWT.ALL_AWT_EVENTS_PERMISSION); 2188 } 2189 synchronized (this) { 2190 EventListener[] la = ToolkitEventMulticaster.getListeners(eventListener,AWTEventListener.class); 2191 2192 AWTEventListener[] ret = new AWTEventListener[la.length]; 2193 for (int i = 0; i < la.length; i++) { 2194 SelectiveAWTEventListener sael = (SelectiveAWTEventListener)la[i]; 2195 AWTEventListener tempL = sael.getListener(); 2196 //assert tempL is not an AWTEventListenerProxy - we should 2197 // have weeded them all out 2198 // don't want to wrap a proxy inside a proxy 2199 ret[i] = new AWTEventListenerProxy(sael.getEventMask(), tempL); 2200 } 2201 return ret; 2202 } 2203 } 2204 2205 /** 2206 * Returns an array of all the <code>AWTEventListener</code>s 2207 * registered on this toolkit which listen to all of the event 2208 * types specified in the {@code eventMask} argument. 2209 * If there is a security manager, its {@code checkPermission} 2210 * method is called with an 2211 * {@code AWTPermission("listenToAllAWTEvents")} permission. 2212 * This may result in a SecurityException. 2213 * Listeners can be returned 2214 * within <code>AWTEventListenerProxy</code> objects, which also contain 2215 * the event mask for the given listener. 2216 * Note that listener objects 2217 * added multiple times appear only once in the returned array. 2218 * 2219 * @param eventMask the bitmask of event types to listen for 2220 * @return all of the <code>AWTEventListener</code>s registered 2221 * on this toolkit for the specified 2222 * event types, or an empty array if no such listeners 2223 * are currently registered 2224 * @throws SecurityException 2225 * if a security manager exists and its 2226 * <code>checkPermission</code> method doesn't allow the operation. 2227 * @see #addAWTEventListener 2228 * @see #removeAWTEventListener 2229 * @see SecurityManager#checkPermission 2230 * @see java.awt.AWTEvent 2231 * @see java.awt.AWTPermission 2232 * @see java.awt.event.AWTEventListener 2233 * @see java.awt.event.AWTEventListenerProxy 2234 * @since 1.4 2235 */ 2236 public AWTEventListener[] getAWTEventListeners(long eventMask) { 2237 SecurityManager security = System.getSecurityManager(); 2238 if (security != null) { 2239 security.checkPermission(SecurityConstants.AWT.ALL_AWT_EVENTS_PERMISSION); 2240 } 2241 synchronized (this) { 2242 EventListener[] la = ToolkitEventMulticaster.getListeners(eventListener,AWTEventListener.class); 2243 2244 java.util.List<AWTEventListenerProxy> list = new ArrayList<>(la.length); 2245 2246 for (int i = 0; i < la.length; i++) { 2247 SelectiveAWTEventListener sael = (SelectiveAWTEventListener)la[i]; 2248 if ((sael.getEventMask() & eventMask) == eventMask) { 2249 //AWTEventListener tempL = sael.getListener(); 2250 list.add(new AWTEventListenerProxy(sael.getEventMask(), 2251 sael.getListener())); 2252 } 2253 } 2254 return list.toArray(new AWTEventListener[0]); 2255 } 2256 } 2257 2258 /* 2259 * This method notifies any AWTEventListeners that an event 2260 * is about to be dispatched. 2261 * 2262 * @param theEvent the event which will be dispatched. 2263 */ 2264 void notifyAWTEventListeners(AWTEvent theEvent) { 2265 // This is a workaround for headless toolkits. It would be 2266 // better to override this method but it is declared package private. 2267 // "this instanceof" syntax defeats polymorphism. 2268 // --mm, 03/03/00 2269 if (this instanceof HeadlessToolkit) { 2270 ((HeadlessToolkit)this).getUnderlyingToolkit() 2271 .notifyAWTEventListeners(theEvent); 2272 return; 2273 } 2274 2275 AWTEventListener eventListener = this.eventListener; 2276 if (eventListener != null) { 2277 eventListener.eventDispatched(theEvent); 2278 } 2279 } 2280 2281 static private class ToolkitEventMulticaster extends AWTEventMulticaster 2282 implements AWTEventListener { 2283 // Implementation cloned from AWTEventMulticaster. 2284 2285 ToolkitEventMulticaster(AWTEventListener a, AWTEventListener b) { 2286 super(a, b); 2287 } 2288 2289 static AWTEventListener add(AWTEventListener a, 2290 AWTEventListener b) { 2291 if (a == null) return b; 2292 if (b == null) return a; 2293 return new ToolkitEventMulticaster(a, b); 2294 } 2295 2296 static AWTEventListener remove(AWTEventListener l, 2297 AWTEventListener oldl) { 2298 return (AWTEventListener) removeInternal(l, oldl); 2299 } 2300 2301 // #4178589: must overload remove(EventListener) to call our add() 2302 // instead of the static addInternal() so we allocate a 2303 // ToolkitEventMulticaster instead of an AWTEventMulticaster. 2304 // Note: this method is called by AWTEventListener.removeInternal(), 2305 // so its method signature must match AWTEventListener.remove(). 2306 protected EventListener remove(EventListener oldl) { 2307 if (oldl == a) return b; 2308 if (oldl == b) return a; 2309 AWTEventListener a2 = (AWTEventListener)removeInternal(a, oldl); 2310 AWTEventListener b2 = (AWTEventListener)removeInternal(b, oldl); 2311 if (a2 == a && b2 == b) { 2312 return this; // it's not here 2313 } 2314 return add(a2, b2); 2315 } 2316 2317 public void eventDispatched(AWTEvent event) { 2318 ((AWTEventListener)a).eventDispatched(event); 2319 ((AWTEventListener)b).eventDispatched(event); 2320 } 2321 } 2322 2323 private class SelectiveAWTEventListener implements AWTEventListener { 2324 AWTEventListener listener; 2325 private long eventMask; 2326 // This array contains the number of times to call the eventlistener 2327 // for each event type. 2328 int[] calls = new int[Toolkit.LONG_BITS]; 2329 2330 public AWTEventListener getListener() {return listener;} 2331 public long getEventMask() {return eventMask;} 2332 public int[] getCalls() {return calls;} 2333 2334 public void orEventMasks(long mask) { 2335 eventMask |= mask; 2336 // For each event bit set in mask, increment its call count. 2337 for (int i=0; i<Toolkit.LONG_BITS; i++) { 2338 // If no bits are set, break out of loop. 2339 if (mask == 0) { 2340 break; 2341 } 2342 if ((mask & 1L) != 0) { // Always test bit 0. 2343 calls[i]++; 2344 } 2345 mask >>>= 1; // Right shift, fill with zeros on left. 2346 } 2347 } 2348 2349 SelectiveAWTEventListener(AWTEventListener l, long mask) { 2350 listener = l; 2351 eventMask = mask; 2352 } 2353 2354 public void eventDispatched(AWTEvent event) { 2355 long eventBit = 0; // Used to save the bit of the event type. 2356 if (((eventBit = eventMask & AWTEvent.COMPONENT_EVENT_MASK) != 0 && 2357 event.id >= ComponentEvent.COMPONENT_FIRST && 2358 event.id <= ComponentEvent.COMPONENT_LAST) 2359 || ((eventBit = eventMask & AWTEvent.CONTAINER_EVENT_MASK) != 0 && 2360 event.id >= ContainerEvent.CONTAINER_FIRST && 2361 event.id <= ContainerEvent.CONTAINER_LAST) 2362 || ((eventBit = eventMask & AWTEvent.FOCUS_EVENT_MASK) != 0 && 2363 event.id >= FocusEvent.FOCUS_FIRST && 2364 event.id <= FocusEvent.FOCUS_LAST) 2365 || ((eventBit = eventMask & AWTEvent.KEY_EVENT_MASK) != 0 && 2366 event.id >= KeyEvent.KEY_FIRST && 2367 event.id <= KeyEvent.KEY_LAST) 2368 || ((eventBit = eventMask & AWTEvent.MOUSE_WHEEL_EVENT_MASK) != 0 && 2369 event.id == MouseEvent.MOUSE_WHEEL) 2370 || ((eventBit = eventMask & AWTEvent.MOUSE_MOTION_EVENT_MASK) != 0 && 2371 (event.id == MouseEvent.MOUSE_MOVED || 2372 event.id == MouseEvent.MOUSE_DRAGGED)) 2373 || ((eventBit = eventMask & AWTEvent.MOUSE_EVENT_MASK) != 0 && 2374 event.id != MouseEvent.MOUSE_MOVED && 2375 event.id != MouseEvent.MOUSE_DRAGGED && 2376 event.id != MouseEvent.MOUSE_WHEEL && 2377 event.id >= MouseEvent.MOUSE_FIRST && 2378 event.id <= MouseEvent.MOUSE_LAST) 2379 || ((eventBit = eventMask & AWTEvent.WINDOW_EVENT_MASK) != 0 && 2380 (event.id >= WindowEvent.WINDOW_FIRST && 2381 event.id <= WindowEvent.WINDOW_LAST)) 2382 || ((eventBit = eventMask & AWTEvent.ACTION_EVENT_MASK) != 0 && 2383 event.id >= ActionEvent.ACTION_FIRST && 2384 event.id <= ActionEvent.ACTION_LAST) 2385 || ((eventBit = eventMask & AWTEvent.ADJUSTMENT_EVENT_MASK) != 0 && 2386 event.id >= AdjustmentEvent.ADJUSTMENT_FIRST && 2387 event.id <= AdjustmentEvent.ADJUSTMENT_LAST) 2388 || ((eventBit = eventMask & AWTEvent.ITEM_EVENT_MASK) != 0 && 2389 event.id >= ItemEvent.ITEM_FIRST && 2390 event.id <= ItemEvent.ITEM_LAST) 2391 || ((eventBit = eventMask & AWTEvent.TEXT_EVENT_MASK) != 0 && 2392 event.id >= TextEvent.TEXT_FIRST && 2393 event.id <= TextEvent.TEXT_LAST) 2394 || ((eventBit = eventMask & AWTEvent.INPUT_METHOD_EVENT_MASK) != 0 && 2395 event.id >= InputMethodEvent.INPUT_METHOD_FIRST && 2396 event.id <= InputMethodEvent.INPUT_METHOD_LAST) 2397 || ((eventBit = eventMask & AWTEvent.PAINT_EVENT_MASK) != 0 && 2398 event.id >= PaintEvent.PAINT_FIRST && 2399 event.id <= PaintEvent.PAINT_LAST) 2400 || ((eventBit = eventMask & AWTEvent.INVOCATION_EVENT_MASK) != 0 && 2401 event.id >= InvocationEvent.INVOCATION_FIRST && 2402 event.id <= InvocationEvent.INVOCATION_LAST) 2403 || ((eventBit = eventMask & AWTEvent.HIERARCHY_EVENT_MASK) != 0 && 2404 event.id == HierarchyEvent.HIERARCHY_CHANGED) 2405 || ((eventBit = eventMask & AWTEvent.HIERARCHY_BOUNDS_EVENT_MASK) != 0 && 2406 (event.id == HierarchyEvent.ANCESTOR_MOVED || 2407 event.id == HierarchyEvent.ANCESTOR_RESIZED)) 2408 || ((eventBit = eventMask & AWTEvent.WINDOW_STATE_EVENT_MASK) != 0 && 2409 event.id == WindowEvent.WINDOW_STATE_CHANGED) 2410 || ((eventBit = eventMask & AWTEvent.WINDOW_FOCUS_EVENT_MASK) != 0 && 2411 (event.id == WindowEvent.WINDOW_GAINED_FOCUS || 2412 event.id == WindowEvent.WINDOW_LOST_FOCUS)) 2413 || ((eventBit = eventMask & sun.awt.SunToolkit.GRAB_EVENT_MASK) != 0 && 2414 (event instanceof sun.awt.UngrabEvent))) { 2415 // Get the index of the call count for this event type. 2416 // Instead of using Math.log(...) we will calculate it with 2417 // bit shifts. That's what previous implementation looked like: 2418 // 2419 // int ci = (int) (Math.log(eventBit)/Math.log(2)); 2420 int ci = 0; 2421 for (long eMask = eventBit; eMask != 0; eMask >>>= 1, ci++) { 2422 } 2423 ci--; 2424 // Call the listener as many times as it was added for this 2425 // event type. 2426 for (int i=0; i<calls[ci]; i++) { 2427 listener.eventDispatched(event); 2428 } 2429 } 2430 } 2431 } 2432 2433 /** 2434 * Returns a map of visual attributes for the abstract level description 2435 * of the given input method highlight, or null if no mapping is found. 2436 * The style field of the input method highlight is ignored. The map 2437 * returned is unmodifiable. 2438 * @param highlight input method highlight 2439 * @return style attribute map, or <code>null</code> 2440 * @exception HeadlessException if 2441 * <code>GraphicsEnvironment.isHeadless</code> returns true 2442 * @see java.awt.GraphicsEnvironment#isHeadless 2443 * @since 1.3 2444 */ 2445 public abstract Map<java.awt.font.TextAttribute,?> 2446 mapInputMethodHighlight(InputMethodHighlight highlight) 2447 throws HeadlessException; 2448 2449 private static PropertyChangeSupport createPropertyChangeSupport(Toolkit toolkit) { 2450 if (toolkit instanceof SunToolkit || toolkit instanceof HeadlessToolkit) { 2451 return new DesktopPropertyChangeSupport(toolkit); 2452 } else { 2453 return new PropertyChangeSupport(toolkit); 2454 } 2455 } 2456 2457 @SuppressWarnings("serial") 2458 private static class DesktopPropertyChangeSupport extends PropertyChangeSupport { 2459 2460 private static final StringBuilder PROP_CHANGE_SUPPORT_KEY = 2461 new StringBuilder("desktop property change support key"); 2462 private final Object source; 2463 2464 public DesktopPropertyChangeSupport(Object sourceBean) { 2465 super(sourceBean); 2466 source = sourceBean; 2467 } 2468 2469 @Override 2470 public synchronized void addPropertyChangeListener( 2471 String propertyName, 2472 PropertyChangeListener listener) 2473 { 2474 PropertyChangeSupport pcs = (PropertyChangeSupport) 2475 AppContext.getAppContext().get(PROP_CHANGE_SUPPORT_KEY); 2476 if (null == pcs) { 2477 pcs = new PropertyChangeSupport(source); 2478 AppContext.getAppContext().put(PROP_CHANGE_SUPPORT_KEY, pcs); 2479 } 2480 pcs.addPropertyChangeListener(propertyName, listener); 2481 } 2482 2483 @Override 2484 public synchronized void removePropertyChangeListener( 2485 String propertyName, 2486 PropertyChangeListener listener) 2487 { 2488 PropertyChangeSupport pcs = (PropertyChangeSupport) 2489 AppContext.getAppContext().get(PROP_CHANGE_SUPPORT_KEY); 2490 if (null != pcs) { 2491 pcs.removePropertyChangeListener(propertyName, listener); 2492 } 2493 } 2494 2495 @Override 2496 public synchronized PropertyChangeListener[] getPropertyChangeListeners() 2497 { 2498 PropertyChangeSupport pcs = (PropertyChangeSupport) 2499 AppContext.getAppContext().get(PROP_CHANGE_SUPPORT_KEY); 2500 if (null != pcs) { 2501 return pcs.getPropertyChangeListeners(); 2502 } else { 2503 return new PropertyChangeListener[0]; 2504 } 2505 } 2506 2507 @Override 2508 public synchronized PropertyChangeListener[] getPropertyChangeListeners(String propertyName) 2509 { 2510 PropertyChangeSupport pcs = (PropertyChangeSupport) 2511 AppContext.getAppContext().get(PROP_CHANGE_SUPPORT_KEY); 2512 if (null != pcs) { 2513 return pcs.getPropertyChangeListeners(propertyName); 2514 } else { 2515 return new PropertyChangeListener[0]; 2516 } 2517 } 2518 2519 @Override 2520 public synchronized void addPropertyChangeListener(PropertyChangeListener listener) { 2521 PropertyChangeSupport pcs = (PropertyChangeSupport) 2522 AppContext.getAppContext().get(PROP_CHANGE_SUPPORT_KEY); 2523 if (null == pcs) { 2524 pcs = new PropertyChangeSupport(source); 2525 AppContext.getAppContext().put(PROP_CHANGE_SUPPORT_KEY, pcs); 2526 } 2527 pcs.addPropertyChangeListener(listener); 2528 } 2529 2530 @Override 2531 public synchronized void removePropertyChangeListener(PropertyChangeListener listener) { 2532 PropertyChangeSupport pcs = (PropertyChangeSupport) 2533 AppContext.getAppContext().get(PROP_CHANGE_SUPPORT_KEY); 2534 if (null != pcs) { 2535 pcs.removePropertyChangeListener(listener); 2536 } 2537 } 2538 2539 /* 2540 * we do expect that all other fireXXX() methods of java.beans.PropertyChangeSupport 2541 * use this method. If this will be changed we will need to change this class. 2542 */ 2543 @Override 2544 public void firePropertyChange(final PropertyChangeEvent evt) { 2545 Object oldValue = evt.getOldValue(); 2546 Object newValue = evt.getNewValue(); 2547 String propertyName = evt.getPropertyName(); 2548 if (oldValue != null && newValue != null && oldValue.equals(newValue)) { 2549 return; 2550 } 2551 Runnable updater = new Runnable() { 2552 public void run() { 2553 PropertyChangeSupport pcs = (PropertyChangeSupport) 2554 AppContext.getAppContext().get(PROP_CHANGE_SUPPORT_KEY); 2555 if (null != pcs) { 2556 pcs.firePropertyChange(evt); 2557 } 2558 } 2559 }; 2560 final AppContext currentAppContext = AppContext.getAppContext(); 2561 for (AppContext appContext : AppContext.getAppContexts()) { 2562 if (null == appContext || appContext.isDisposed()) { 2563 continue; 2564 } 2565 if (currentAppContext == appContext) { 2566 updater.run(); 2567 } else { 2568 final PeerEvent e = new PeerEvent(source, updater, PeerEvent.ULTIMATE_PRIORITY_EVENT); 2569 SunToolkit.postEvent(appContext, e); 2570 } 2571 } 2572 } 2573 } 2574 2575 /** 2576 * Reports whether events from extra mouse buttons are allowed to be processed and posted into 2577 * {@code EventQueue}. 2578 * <br> 2579 * To change the returned value it is necessary to set the {@code sun.awt.enableExtraMouseButtons} 2580 * property before the {@code Toolkit} class initialization. This setting could be done on the application 2581 * startup by the following command: 2582 * <pre> 2583 * java -Dsun.awt.enableExtraMouseButtons=false Application 2584 * </pre> 2585 * Alternatively, the property could be set in the application by using the following code: 2586 * <pre> 2587 * System.setProperty("sun.awt.enableExtraMouseButtons", "true"); 2588 * </pre> 2589 * before the {@code Toolkit} class initialization. 2590 * If not set by the time of the {@code Toolkit} class initialization, this property will be 2591 * initialized with {@code true}. 2592 * Changing this value after the {@code Toolkit} class initialization will have no effect. 2593 * <p> 2594 * @exception HeadlessException if GraphicsEnvironment.isHeadless() returns true 2595 * @return {@code true} if events from extra mouse buttons are allowed to be processed and posted; 2596 * {@code false} otherwise 2597 * @see System#getProperty(String propertyName) 2598 * @see System#setProperty(String propertyName, String value) 2599 * @see java.awt.EventQueue 2600 * @since 1.7 2601 */ 2602 public boolean areExtraMouseButtonsEnabled() throws HeadlessException { 2603 GraphicsEnvironment.checkHeadless(); 2604 2605 return Toolkit.getDefaultToolkit().areExtraMouseButtonsEnabled(); 2606 } 2607 }