1 /* 2 * Copyright (c) 1995, 2013, 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.awt.AWTAccessor; 60 import sun.security.util.SecurityConstants; 61 62 import sun.util.CoreResourceBundleControl; 63 64 /** 65 * This class is the abstract superclass of all actual 66 * implementations of the Abstract Window Toolkit. Subclasses of 67 * the <code>Toolkit</code> class are used to bind the various components 68 * to particular native toolkit implementations. 69 * <p> 70 * Many GUI events may be delivered to user 71 * asynchronously, if the opposite is not specified explicitly. 72 * As well as 73 * many GUI operations may be performed asynchronously. 74 * This fact means that if the state of a component is set, and then 75 * the state immediately queried, the returned value may not yet 76 * reflect the requested change. This behavior includes, but is not 77 * limited to: 78 * <ul> 79 * <li>Scrolling to a specified position. 80 * <br>For example, calling <code>ScrollPane.setScrollPosition</code> 81 * and then <code>getScrollPosition</code> may return an incorrect 82 * value if the original request has not yet been processed. 83 * <p> 84 * <li>Moving the focus from one component to another. 85 * <br>For more information, see 86 * <a href="http://java.sun.com/docs/books/tutorial/uiswing/misc/focus.html#transferTiming">Timing 87 * Focus Transfers</a>, a section in 88 * <a href="http://java.sun.com/docs/books/tutorial/uiswing/">The Swing 89 * Tutorial</a>. 90 * <p> 91 * <li>Making a top-level container visible. 92 * <br>Calling <code>setVisible(true)</code> on a <code>Window</code>, 93 * <code>Frame</code> or <code>Dialog</code> may occur 94 * asynchronously. 95 * <p> 96 * <li>Setting the size or location of a top-level container. 97 * <br>Calls to <code>setSize</code>, <code>setBounds</code> or 98 * <code>setLocation</code> on a <code>Window</code>, 99 * <code>Frame</code> or <code>Dialog</code> are forwarded 100 * to the underlying window management system and may be 101 * ignored or modified. See {@link java.awt.Window} for 102 * more information. 103 * </ul> 104 * <p> 105 * Most applications should not call any of the methods in this 106 * class directly. The methods defined by <code>Toolkit</code> are 107 * the "glue" that joins the platform-independent classes in the 108 * <code>java.awt</code> package with their counterparts in 109 * <code>java.awt.peer</code>. Some methods defined by 110 * <code>Toolkit</code> query the native operating system directly. 111 * 112 * @author Sami Shaio 113 * @author Arthur van Hoff 114 * @author Fred Ecks 115 * @since JDK1.0 116 */ 117 public abstract class Toolkit { 118 119 /** 120 * Creates this toolkit's implementation of the <code>Desktop</code> 121 * using the specified peer interface. 122 * @param target the desktop to be implemented 123 * @return this toolkit's implementation of the <code>Desktop</code> 124 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 125 * returns true 126 * @see java.awt.GraphicsEnvironment#isHeadless 127 * @see java.awt.Desktop 128 * @see java.awt.peer.DesktopPeer 129 * @since 1.6 130 */ 131 protected abstract DesktopPeer createDesktopPeer(Desktop target) 132 throws HeadlessException; 133 134 135 /** 136 * Creates this toolkit's implementation of <code>Button</code> using 137 * the specified peer interface. 138 * @param target the button to be implemented. 139 * @return this toolkit's implementation of <code>Button</code>. 140 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 141 * returns true 142 * @see java.awt.GraphicsEnvironment#isHeadless 143 * @see java.awt.Button 144 * @see java.awt.peer.ButtonPeer 145 */ 146 protected abstract ButtonPeer createButton(Button target) 147 throws HeadlessException; 148 149 /** 150 * Creates this toolkit's implementation of <code>TextField</code> using 151 * the specified peer interface. 152 * @param target the text field to be implemented. 153 * @return this toolkit's implementation of <code>TextField</code>. 154 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 155 * returns true 156 * @see java.awt.GraphicsEnvironment#isHeadless 157 * @see java.awt.TextField 158 * @see java.awt.peer.TextFieldPeer 159 */ 160 protected abstract TextFieldPeer createTextField(TextField target) 161 throws HeadlessException; 162 163 /** 164 * Creates this toolkit's implementation of <code>Label</code> using 165 * the specified peer interface. 166 * @param target the label to be implemented. 167 * @return this toolkit's implementation of <code>Label</code>. 168 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 169 * returns true 170 * @see java.awt.GraphicsEnvironment#isHeadless 171 * @see java.awt.Label 172 * @see java.awt.peer.LabelPeer 173 */ 174 protected abstract LabelPeer createLabel(Label target) 175 throws HeadlessException; 176 177 /** 178 * Creates this toolkit's implementation of <code>List</code> using 179 * the specified peer interface. 180 * @param target the list to be implemented. 181 * @return this toolkit's implementation of <code>List</code>. 182 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 183 * returns true 184 * @see java.awt.GraphicsEnvironment#isHeadless 185 * @see java.awt.List 186 * @see java.awt.peer.ListPeer 187 */ 188 protected abstract ListPeer createList(java.awt.List target) 189 throws HeadlessException; 190 191 /** 192 * Creates this toolkit's implementation of <code>Checkbox</code> using 193 * the specified peer interface. 194 * @param target the check box to be implemented. 195 * @return this toolkit's implementation of <code>Checkbox</code>. 196 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 197 * returns true 198 * @see java.awt.GraphicsEnvironment#isHeadless 199 * @see java.awt.Checkbox 200 * @see java.awt.peer.CheckboxPeer 201 */ 202 protected abstract CheckboxPeer createCheckbox(Checkbox target) 203 throws HeadlessException; 204 205 /** 206 * Creates this toolkit's implementation of <code>Scrollbar</code> using 207 * the specified peer interface. 208 * @param target the scroll bar to be implemented. 209 * @return this toolkit's implementation of <code>Scrollbar</code>. 210 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 211 * returns true 212 * @see java.awt.GraphicsEnvironment#isHeadless 213 * @see java.awt.Scrollbar 214 * @see java.awt.peer.ScrollbarPeer 215 */ 216 protected abstract ScrollbarPeer createScrollbar(Scrollbar target) 217 throws HeadlessException; 218 219 /** 220 * Creates this toolkit's implementation of <code>ScrollPane</code> using 221 * the specified peer interface. 222 * @param target the scroll pane to be implemented. 223 * @return this toolkit's implementation of <code>ScrollPane</code>. 224 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 225 * returns true 226 * @see java.awt.GraphicsEnvironment#isHeadless 227 * @see java.awt.ScrollPane 228 * @see java.awt.peer.ScrollPanePeer 229 * @since JDK1.1 230 */ 231 protected abstract ScrollPanePeer createScrollPane(ScrollPane target) 232 throws HeadlessException; 233 234 /** 235 * Creates this toolkit's implementation of <code>TextArea</code> using 236 * the specified peer interface. 237 * @param target the text area to be implemented. 238 * @return this toolkit's implementation of <code>TextArea</code>. 239 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 240 * returns true 241 * @see java.awt.GraphicsEnvironment#isHeadless 242 * @see java.awt.TextArea 243 * @see java.awt.peer.TextAreaPeer 244 */ 245 protected abstract TextAreaPeer createTextArea(TextArea target) 246 throws HeadlessException; 247 248 /** 249 * Creates this toolkit's implementation of <code>Choice</code> using 250 * the specified peer interface. 251 * @param target the choice to be implemented. 252 * @return this toolkit's implementation of <code>Choice</code>. 253 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 254 * returns true 255 * @see java.awt.GraphicsEnvironment#isHeadless 256 * @see java.awt.Choice 257 * @see java.awt.peer.ChoicePeer 258 */ 259 protected abstract ChoicePeer createChoice(Choice target) 260 throws HeadlessException; 261 262 /** 263 * Creates this toolkit's implementation of <code>Frame</code> using 264 * the specified peer interface. 265 * @param target the frame to be implemented. 266 * @return this toolkit's implementation of <code>Frame</code>. 267 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 268 * returns true 269 * @see java.awt.GraphicsEnvironment#isHeadless 270 * @see java.awt.Frame 271 * @see java.awt.peer.FramePeer 272 */ 273 protected abstract FramePeer createFrame(Frame target) 274 throws HeadlessException; 275 276 /** 277 * Creates this toolkit's implementation of <code>Canvas</code> using 278 * the specified peer interface. 279 * @param target the canvas to be implemented. 280 * @return this toolkit's implementation of <code>Canvas</code>. 281 * @see java.awt.Canvas 282 * @see java.awt.peer.CanvasPeer 283 */ 284 protected abstract CanvasPeer createCanvas(Canvas target); 285 286 /** 287 * Creates this toolkit's implementation of <code>Panel</code> using 288 * the specified peer interface. 289 * @param target the panel to be implemented. 290 * @return this toolkit's implementation of <code>Panel</code>. 291 * @see java.awt.Panel 292 * @see java.awt.peer.PanelPeer 293 */ 294 protected abstract PanelPeer createPanel(Panel target); 295 296 /** 297 * Creates this toolkit's implementation of <code>Window</code> using 298 * the specified peer interface. 299 * @param target the window to be implemented. 300 * @return this toolkit's implementation of <code>Window</code>. 301 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 302 * returns true 303 * @see java.awt.GraphicsEnvironment#isHeadless 304 * @see java.awt.Window 305 * @see java.awt.peer.WindowPeer 306 */ 307 protected abstract WindowPeer createWindow(Window target) 308 throws HeadlessException; 309 310 /** 311 * Creates this toolkit's implementation of <code>Dialog</code> using 312 * the specified peer interface. 313 * @param target the dialog to be implemented. 314 * @return this toolkit's implementation of <code>Dialog</code>. 315 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 316 * returns true 317 * @see java.awt.GraphicsEnvironment#isHeadless 318 * @see java.awt.Dialog 319 * @see java.awt.peer.DialogPeer 320 */ 321 protected abstract DialogPeer createDialog(Dialog target) 322 throws HeadlessException; 323 324 /** 325 * Creates this toolkit's implementation of <code>MenuBar</code> using 326 * the specified peer interface. 327 * @param target the menu bar to be implemented. 328 * @return this toolkit's implementation of <code>MenuBar</code>. 329 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 330 * returns true 331 * @see java.awt.GraphicsEnvironment#isHeadless 332 * @see java.awt.MenuBar 333 * @see java.awt.peer.MenuBarPeer 334 */ 335 protected abstract MenuBarPeer createMenuBar(MenuBar target) 336 throws HeadlessException; 337 338 /** 339 * Creates this toolkit's implementation of <code>Menu</code> using 340 * the specified peer interface. 341 * @param target the menu to be implemented. 342 * @return this toolkit's implementation of <code>Menu</code>. 343 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 344 * returns true 345 * @see java.awt.GraphicsEnvironment#isHeadless 346 * @see java.awt.Menu 347 * @see java.awt.peer.MenuPeer 348 */ 349 protected abstract MenuPeer createMenu(Menu target) 350 throws HeadlessException; 351 352 /** 353 * Creates this toolkit's implementation of <code>PopupMenu</code> using 354 * the specified peer interface. 355 * @param target the popup menu to be implemented. 356 * @return this toolkit's implementation of <code>PopupMenu</code>. 357 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 358 * returns true 359 * @see java.awt.GraphicsEnvironment#isHeadless 360 * @see java.awt.PopupMenu 361 * @see java.awt.peer.PopupMenuPeer 362 * @since JDK1.1 363 */ 364 protected abstract PopupMenuPeer createPopupMenu(PopupMenu target) 365 throws HeadlessException; 366 367 /** 368 * Creates this toolkit's implementation of <code>MenuItem</code> using 369 * the specified peer interface. 370 * @param target the menu item to be implemented. 371 * @return this toolkit's implementation of <code>MenuItem</code>. 372 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 373 * returns true 374 * @see java.awt.GraphicsEnvironment#isHeadless 375 * @see java.awt.MenuItem 376 * @see java.awt.peer.MenuItemPeer 377 */ 378 protected abstract MenuItemPeer createMenuItem(MenuItem target) 379 throws HeadlessException; 380 381 /** 382 * Creates this toolkit's implementation of <code>FileDialog</code> using 383 * the specified peer interface. 384 * @param target the file dialog to be implemented. 385 * @return this toolkit's implementation of <code>FileDialog</code>. 386 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 387 * returns true 388 * @see java.awt.GraphicsEnvironment#isHeadless 389 * @see java.awt.FileDialog 390 * @see java.awt.peer.FileDialogPeer 391 */ 392 protected abstract FileDialogPeer createFileDialog(FileDialog target) 393 throws HeadlessException; 394 395 /** 396 * Creates this toolkit's implementation of <code>CheckboxMenuItem</code> using 397 * the specified peer interface. 398 * @param target the checkbox menu item to be implemented. 399 * @return this toolkit's implementation of <code>CheckboxMenuItem</code>. 400 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 401 * returns true 402 * @see java.awt.GraphicsEnvironment#isHeadless 403 * @see java.awt.CheckboxMenuItem 404 * @see java.awt.peer.CheckboxMenuItemPeer 405 */ 406 protected abstract CheckboxMenuItemPeer createCheckboxMenuItem( 407 CheckboxMenuItem target) throws HeadlessException; 408 409 /** 410 * Obtains this toolkit's implementation of helper class for 411 * <code>MouseInfo</code> operations. 412 * @return this toolkit's implementation of helper for <code>MouseInfo</code> 413 * @throws UnsupportedOperationException if this operation is not implemented 414 * @see java.awt.peer.MouseInfoPeer 415 * @see java.awt.MouseInfo 416 * @since 1.5 417 */ 418 protected MouseInfoPeer getMouseInfoPeer() { 419 throw new UnsupportedOperationException("Not implemented"); 420 } 421 422 private static LightweightPeer lightweightMarker; 423 424 /** 425 * Creates a peer for a component or container. This peer is windowless 426 * and allows the Component and Container classes to be extended directly 427 * to create windowless components that are defined entirely in java. 428 * 429 * @param target The Component to be created. 430 */ 431 protected LightweightPeer createComponent(Component target) { 432 if (lightweightMarker == null) { 433 lightweightMarker = new NullComponentPeer(); 434 } 435 return lightweightMarker; 436 } 437 438 /** 439 * Creates this toolkit's implementation of <code>Font</code> using 440 * the specified peer interface. 441 * @param name the font to be implemented 442 * @param style the style of the font, such as <code>PLAIN</code>, 443 * <code>BOLD</code>, <code>ITALIC</code>, or a combination 444 * @return this toolkit's implementation of <code>Font</code> 445 * @see java.awt.Font 446 * @see java.awt.peer.FontPeer 447 * @see java.awt.GraphicsEnvironment#getAllFonts 448 * @deprecated see java.awt.GraphicsEnvironment#getAllFonts 449 */ 450 @Deprecated 451 protected abstract FontPeer getFontPeer(String name, int style); 452 453 // The following method is called by the private method 454 // <code>updateSystemColors</code> in <code>SystemColor</code>. 455 456 /** 457 * Fills in the integer array that is supplied as an argument 458 * with the current system color values. 459 * 460 * @param systemColors an integer array. 461 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 462 * returns true 463 * @see java.awt.GraphicsEnvironment#isHeadless 464 * @since JDK1.1 465 */ 466 protected void loadSystemColors(int[] systemColors) 467 throws HeadlessException { 468 GraphicsEnvironment.checkHeadless(); 469 } 470 471 /** 472 * Controls whether the layout of Containers is validated dynamically 473 * during resizing, or statically, after resizing is complete. 474 * Use {@code isDynamicLayoutActive()} to detect if this feature enabled 475 * in this program and is supported by this operating system 476 * and/or window manager. 477 * Note that this feature is supported not on all platforms, and 478 * conversely, that this feature cannot be turned off on some platforms. 479 * On these platforms where dynamic layout during resizing is not supported 480 * (or is always supported), setting this property has no effect. 481 * Note that this feature can be set or unset as a property of the 482 * operating system or window manager on some platforms. On such 483 * platforms, the dynamic resize property must be set at the operating 484 * system or window manager level before this method can take effect. 485 * This method does not change support or settings of the underlying 486 * operating system or 487 * window manager. The OS/WM support can be 488 * queried using getDesktopProperty("awt.dynamicLayoutSupported") method. 489 * 490 * @param dynamic If true, Containers should re-layout their 491 * components as the Container is being resized. If false, 492 * the layout will be validated after resizing is completed. 493 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 494 * returns true 495 * @see #isDynamicLayoutSet() 496 * @see #isDynamicLayoutActive() 497 * @see #getDesktopProperty(String propertyName) 498 * @see java.awt.GraphicsEnvironment#isHeadless 499 * @since 1.4 500 */ 501 public void setDynamicLayout(final boolean dynamic) 502 throws HeadlessException { 503 GraphicsEnvironment.checkHeadless(); 504 if (this != getDefaultToolkit()) { 505 getDefaultToolkit().setDynamicLayout(dynamic); 506 } 507 } 508 509 /** 510 * Returns whether the layout of Containers is validated dynamically 511 * during resizing, or statically, after resizing is complete. 512 * Note: this method returns the value that was set programmatically; 513 * it does not reflect support at the level of the operating system 514 * or window manager for dynamic layout on resizing, or the current 515 * operating system or window manager settings. The OS/WM support can 516 * be queried using getDesktopProperty("awt.dynamicLayoutSupported"). 517 * 518 * @return true if validation of Containers is done dynamically, 519 * false if validation is done after resizing is finished. 520 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 521 * returns true 522 * @see #setDynamicLayout(boolean dynamic) 523 * @see #isDynamicLayoutActive() 524 * @see #getDesktopProperty(String propertyName) 525 * @see java.awt.GraphicsEnvironment#isHeadless 526 * @since 1.4 527 */ 528 protected boolean isDynamicLayoutSet() 529 throws HeadlessException { 530 GraphicsEnvironment.checkHeadless(); 531 532 if (this != Toolkit.getDefaultToolkit()) { 533 return Toolkit.getDefaultToolkit().isDynamicLayoutSet(); 534 } else { 535 return false; 536 } 537 } 538 539 /** 540 * Returns whether dynamic layout of Containers on resize is 541 * currently active (both set in program 542 *( {@code isDynamicLayoutSet()} ) 543 *, and supported 544 * by the underlying operating system and/or window manager). 545 * If dynamic layout is currently inactive then Containers 546 * re-layout their components when resizing is completed. As a result 547 * the {@code Component.validate()} method will be invoked only 548 * once per resize. 549 * If dynamic layout is currently active then Containers 550 * re-layout their components on every native resize event and 551 * the {@code validate()} method will be invoked each time. 552 * The OS/WM support can be queried using 553 * the getDesktopProperty("awt.dynamicLayoutSupported") method. 554 * 555 * @return true if dynamic layout of Containers on resize is 556 * currently active, false otherwise. 557 * @exception HeadlessException if the GraphicsEnvironment.isHeadless() 558 * method returns true 559 * @see #setDynamicLayout(boolean dynamic) 560 * @see #isDynamicLayoutSet() 561 * @see #getDesktopProperty(String propertyName) 562 * @see java.awt.GraphicsEnvironment#isHeadless 563 * @since 1.4 564 */ 565 public boolean isDynamicLayoutActive() 566 throws HeadlessException { 567 GraphicsEnvironment.checkHeadless(); 568 569 if (this != Toolkit.getDefaultToolkit()) { 570 return Toolkit.getDefaultToolkit().isDynamicLayoutActive(); 571 } else { 572 return false; 573 } 574 } 575 576 /** 577 * Gets the size of the screen. On systems with multiple displays, the 578 * primary display is used. Multi-screen aware display dimensions are 579 * available from <code>GraphicsConfiguration</code> and 580 * <code>GraphicsDevice</code>. 581 * @return the size of this toolkit's screen, in pixels. 582 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 583 * returns true 584 * @see java.awt.GraphicsConfiguration#getBounds 585 * @see java.awt.GraphicsDevice#getDisplayMode 586 * @see java.awt.GraphicsEnvironment#isHeadless 587 */ 588 public abstract Dimension getScreenSize() 589 throws HeadlessException; 590 591 /** 592 * Returns the screen resolution in dots-per-inch. 593 * @return this toolkit's screen resolution, in dots-per-inch. 594 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 595 * returns true 596 * @see java.awt.GraphicsEnvironment#isHeadless 597 */ 598 public abstract int getScreenResolution() 599 throws HeadlessException; 600 601 /** 602 * Gets the insets of the screen. 603 * @param gc a <code>GraphicsConfiguration</code> 604 * @return the insets of this toolkit's screen, in pixels. 605 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 606 * returns true 607 * @see java.awt.GraphicsEnvironment#isHeadless 608 * @since 1.4 609 */ 610 public Insets getScreenInsets(GraphicsConfiguration gc) 611 throws HeadlessException { 612 GraphicsEnvironment.checkHeadless(); 613 if (this != Toolkit.getDefaultToolkit()) { 614 return Toolkit.getDefaultToolkit().getScreenInsets(gc); 615 } else { 616 return new Insets(0, 0, 0, 0); 617 } 618 } 619 620 /** 621 * Determines the color model of this toolkit's screen. 622 * <p> 623 * <code>ColorModel</code> is an abstract class that 624 * encapsulates the ability to translate between the 625 * pixel values of an image and its red, green, blue, 626 * and alpha components. 627 * <p> 628 * This toolkit method is called by the 629 * <code>getColorModel</code> method 630 * of the <code>Component</code> class. 631 * @return the color model of this toolkit's screen. 632 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 633 * returns true 634 * @see java.awt.GraphicsEnvironment#isHeadless 635 * @see java.awt.image.ColorModel 636 * @see java.awt.Component#getColorModel 637 */ 638 public abstract ColorModel getColorModel() 639 throws HeadlessException; 640 641 /** 642 * Returns the names of the available fonts in this toolkit.<p> 643 * For 1.1, the following font names are deprecated (the replacement 644 * name follows): 645 * <ul> 646 * <li>TimesRoman (use Serif) 647 * <li>Helvetica (use SansSerif) 648 * <li>Courier (use Monospaced) 649 * </ul><p> 650 * The ZapfDingbats fontname is also deprecated in 1.1 but the characters 651 * are defined in Unicode starting at 0x2700, and as of 1.1 Java supports 652 * those characters. 653 * @return the names of the available fonts in this toolkit. 654 * @deprecated see {@link java.awt.GraphicsEnvironment#getAvailableFontFamilyNames()} 655 * @see java.awt.GraphicsEnvironment#getAvailableFontFamilyNames() 656 */ 657 @Deprecated 658 public abstract String[] getFontList(); 659 660 /** 661 * Gets the screen device metrics for rendering of the font. 662 * @param font a font 663 * @return the screen metrics of the specified font in this toolkit 664 * @deprecated As of JDK version 1.2, replaced by the <code>Font</code> 665 * method <code>getLineMetrics</code>. 666 * @see java.awt.font.LineMetrics 667 * @see java.awt.Font#getLineMetrics 668 * @see java.awt.GraphicsEnvironment#getScreenDevices 669 */ 670 @Deprecated 671 public abstract FontMetrics getFontMetrics(Font font); 672 673 /** 674 * Synchronizes this toolkit's graphics state. Some window systems 675 * may do buffering of graphics events. 676 * <p> 677 * This method ensures that the display is up-to-date. It is useful 678 * for animation. 679 */ 680 public abstract void sync(); 681 682 /** 683 * The default toolkit. 684 */ 685 private static Toolkit toolkit; 686 687 /** 688 * Used internally by the assistive technologies functions; set at 689 * init time and used at load time 690 */ 691 private static String atNames; 692 693 /** 694 * Initializes properties related to assistive technologies. 695 * These properties are used both in the loadAssistiveProperties() 696 * function below, as well as other classes in the jdk that depend 697 * on the properties (such as the use of the screen_magnifier_present 698 * property in Java2D hardware acceleration initialization). The 699 * initialization of the properties must be done before the platform- 700 * specific Toolkit class is instantiated so that all necessary 701 * properties are set up properly before any classes dependent upon them 702 * are initialized. 703 */ 704 private static void initAssistiveTechnologies() { 705 706 // Get accessibility properties 707 final String sep = File.separator; 708 final Properties properties = new Properties(); 709 710 711 atNames = java.security.AccessController.doPrivileged( 712 new java.security.PrivilegedAction<String>() { 713 public String run() { 714 715 // Try loading the per-user accessibility properties file. 716 try { 717 File propsFile = new File( 718 System.getProperty("user.home") + 719 sep + ".accessibility.properties"); 720 FileInputStream in = 721 new FileInputStream(propsFile); 722 723 // Inputstream has been buffered in Properties class 724 properties.load(in); 725 in.close(); 726 } catch (Exception e) { 727 // Per-user accessibility properties file does not exist 728 } 729 730 // Try loading the system-wide accessibility properties 731 // file only if a per-user accessibility properties 732 // file does not exist or is empty. 733 if (properties.size() == 0) { 734 try { 735 File propsFile = new File( 736 System.getProperty("java.home") + sep + "lib" + 737 sep + "accessibility.properties"); 738 FileInputStream in = 739 new FileInputStream(propsFile); 740 741 // Inputstream has been buffered in Properties class 742 properties.load(in); 743 in.close(); 744 } catch (Exception e) { 745 // System-wide accessibility properties file does 746 // not exist; 747 } 748 } 749 750 // Get whether a screen magnifier is present. First check 751 // the system property and then check the properties file. 752 String magPresent = System.getProperty("javax.accessibility.screen_magnifier_present"); 753 if (magPresent == null) { 754 magPresent = properties.getProperty("screen_magnifier_present", null); 755 if (magPresent != null) { 756 System.setProperty("javax.accessibility.screen_magnifier_present", magPresent); 757 } 758 } 759 760 // Get the names of any assistive technolgies to load. First 761 // check the system property and then check the properties 762 // file. 763 String classNames = System.getProperty("javax.accessibility.assistive_technologies"); 764 if (classNames == null) { 765 classNames = properties.getProperty("assistive_technologies", null); 766 if (classNames != null) { 767 System.setProperty("javax.accessibility.assistive_technologies", classNames); 768 } 769 } 770 return classNames; 771 } 772 }); 773 } 774 775 /** 776 * Loads additional classes into the VM, using the property 777 * 'assistive_technologies' specified in the Sun reference 778 * implementation by a line in the 'accessibility.properties' 779 * file. The form is "assistive_technologies=..." where 780 * the "..." is a comma-separated list of assistive technology 781 * classes to load. Each class is loaded in the order given 782 * and a single instance of each is created using 783 * Class.forName(class).newInstance(). All errors are handled 784 * via an AWTError exception. 785 * 786 * <p>The assumption is made that assistive technology classes are supplied 787 * as part of INSTALLED (as opposed to: BUNDLED) extensions or specified 788 * on the class path 789 * (and therefore can be loaded using the class loader returned by 790 * a call to <code>ClassLoader.getSystemClassLoader</code>, whose 791 * delegation parent is the extension class loader for installed 792 * extensions). 793 */ 794 private static void loadAssistiveTechnologies() { 795 // Load any assistive technologies 796 if (atNames != null) { 797 ClassLoader cl = ClassLoader.getSystemClassLoader(); 798 StringTokenizer parser = new StringTokenizer(atNames," ,"); 799 String atName; 800 while (parser.hasMoreTokens()) { 801 atName = parser.nextToken(); 802 try { 803 Class<?> clazz; 804 if (cl != null) { 805 clazz = cl.loadClass(atName); 806 } else { 807 clazz = Class.forName(atName); 808 } 809 clazz.newInstance(); 810 } catch (ClassNotFoundException e) { 811 throw new AWTError("Assistive Technology not found: " 812 + atName); 813 } catch (InstantiationException e) { 814 throw new AWTError("Could not instantiate Assistive" 815 + " Technology: " + atName); 816 } catch (IllegalAccessException e) { 817 throw new AWTError("Could not access Assistive" 818 + " Technology: " + atName); 819 } catch (Exception e) { 820 throw new AWTError("Error trying to install Assistive" 821 + " Technology: " + atName + " " + e); 822 } 823 } 824 } 825 } 826 827 /** 828 * Gets the default toolkit. 829 * <p> 830 * If a system property named <code>"java.awt.headless"</code> is set 831 * to <code>true</code> then the headless implementation 832 * of <code>Toolkit</code> is used. 833 * <p> 834 * If there is no <code>"java.awt.headless"</code> or it is set to 835 * <code>false</code> and there is a system property named 836 * <code>"awt.toolkit"</code>, 837 * that property is treated as the name of a class that is a subclass 838 * of <code>Toolkit</code>; 839 * otherwise the default platform-specific implementation of 840 * <code>Toolkit</code> is used. 841 * <p> 842 * Also loads additional classes into the VM, using the property 843 * 'assistive_technologies' specified in the Sun reference 844 * implementation by a line in the 'accessibility.properties' 845 * file. The form is "assistive_technologies=..." where 846 * the "..." is a comma-separated list of assistive technology 847 * classes to load. Each class is loaded in the order given 848 * and a single instance of each is created using 849 * Class.forName(class).newInstance(). This is done just after 850 * the AWT toolkit is created. All errors are handled via an 851 * AWTError exception. 852 * @return the default toolkit. 853 * @exception AWTError if a toolkit could not be found, or 854 * if one could not be accessed or instantiated. 855 */ 856 public static synchronized Toolkit getDefaultToolkit() { 857 if (toolkit == null) { 858 try { 859 // We disable the JIT during toolkit initialization. This 860 // tends to touch lots of classes that aren't needed again 861 // later and therefore JITing is counter-productiive. 862 java.lang.Compiler.disable(); 863 864 java.security.AccessController.doPrivileged( 865 new java.security.PrivilegedAction<Void>() { 866 public Void run() { 867 String nm = null; 868 Class<?> cls = null; 869 try { 870 nm = System.getProperty("awt.toolkit"); 871 try { 872 cls = Class.forName(nm); 873 } catch (ClassNotFoundException e) { 874 ClassLoader cl = ClassLoader.getSystemClassLoader(); 875 if (cl != null) { 876 try { 877 cls = cl.loadClass(nm); 878 } catch (ClassNotFoundException ee) { 879 throw new AWTError("Toolkit not found: " + nm); 880 } 881 } 882 } 883 if (cls != null) { 884 toolkit = (Toolkit)cls.newInstance(); 885 if (GraphicsEnvironment.isHeadless()) { 886 toolkit = new HeadlessToolkit(toolkit); 887 } 888 } 889 } catch (InstantiationException e) { 890 throw new AWTError("Could not instantiate Toolkit: " + nm); 891 } catch (IllegalAccessException e) { 892 throw new AWTError("Could not access Toolkit: " + nm); 893 } 894 return null; 895 } 896 }); 897 loadAssistiveTechnologies(); 898 } finally { 899 // Make sure to always re-enable the JIT. 900 java.lang.Compiler.enable(); 901 } 902 } 903 return toolkit; 904 } 905 906 /** 907 * Returns an image which gets pixel data from the specified file, 908 * whose format can be either GIF, JPEG or PNG. 909 * The underlying toolkit attempts to resolve multiple requests 910 * with the same filename to the same returned Image. 911 * <p> 912 * Since the mechanism required to facilitate this sharing of 913 * <code>Image</code> objects may continue to hold onto images 914 * that are no longer in use for an indefinite period of time, 915 * developers are encouraged to implement their own caching of 916 * images by using the {@link #createImage(java.lang.String) createImage} 917 * variant wherever available. 918 * If the image data contained in the specified file changes, 919 * the <code>Image</code> object returned from this method may 920 * still contain stale information which was loaded from the 921 * file after a prior call. 922 * Previously loaded image data can be manually discarded by 923 * calling the {@link Image#flush flush} method on the 924 * returned <code>Image</code>. 925 * <p> 926 * This method first checks if there is a security manager installed. 927 * If so, the method calls the security manager's 928 * <code>checkRead</code> method with the file specified to ensure 929 * that the access to the image is allowed. 930 * @param filename the name of a file containing pixel data 931 * in a recognized file format. 932 * @return an image which gets its pixel data from 933 * the specified file. 934 * @throws SecurityException if a security manager exists and its 935 * checkRead method doesn't allow the operation. 936 * @see #createImage(java.lang.String) 937 */ 938 public abstract Image getImage(String filename); 939 940 /** 941 * Returns an image which gets pixel data from the specified URL. 942 * The pixel data referenced by the specified URL must be in one 943 * of the following formats: GIF, JPEG or PNG. 944 * The underlying toolkit attempts to resolve multiple requests 945 * with the same URL to the same returned Image. 946 * <p> 947 * Since the mechanism required to facilitate this sharing of 948 * <code>Image</code> objects may continue to hold onto images 949 * that are no longer in use for an indefinite period of time, 950 * developers are encouraged to implement their own caching of 951 * images by using the {@link #createImage(java.net.URL) createImage} 952 * variant wherever available. 953 * If the image data stored at the specified URL changes, 954 * the <code>Image</code> object returned from this method may 955 * still contain stale information which was fetched from the 956 * URL after a prior call. 957 * Previously loaded image data can be manually discarded by 958 * calling the {@link Image#flush flush} method on the 959 * returned <code>Image</code>. 960 * <p> 961 * This method first checks if there is a security manager installed. 962 * If so, the method calls the security manager's 963 * <code>checkPermission</code> method with the 964 * url.openConnection().getPermission() permission to ensure 965 * that the access to the image is allowed. For compatibility 966 * with pre-1.2 security managers, if the access is denied with 967 * <code>FilePermission</code> or <code>SocketPermission</code>, 968 * the method throws the <code>SecurityException</code> 969 * if the corresponding 1.1-style SecurityManager.checkXXX method 970 * also denies permission. 971 * @param url the URL to use in fetching the pixel data. 972 * @return an image which gets its pixel data from 973 * the specified URL. 974 * @throws SecurityException if a security manager exists and its 975 * checkPermission method doesn't allow 976 * the operation. 977 * @see #createImage(java.net.URL) 978 */ 979 public abstract Image getImage(URL url); 980 981 /** 982 * Returns an image which gets pixel data from the specified file. 983 * The returned Image is a new object which will not be shared 984 * with any other caller of this method or its getImage variant. 985 * <p> 986 * This method first checks if there is a security manager installed. 987 * If so, the method calls the security manager's 988 * <code>checkRead</code> method with the specified file to ensure 989 * that the image creation is allowed. 990 * @param filename the name of a file containing pixel data 991 * in a recognized file format. 992 * @return an image which gets its pixel data from 993 * the specified file. 994 * @throws SecurityException if a security manager exists and its 995 * checkRead method doesn't allow the operation. 996 * @see #getImage(java.lang.String) 997 */ 998 public abstract Image createImage(String filename); 999 1000 /** 1001 * Returns an image which gets pixel data from the specified URL. 1002 * The returned Image is a new object which will not be shared 1003 * with any other caller of this method or its getImage variant. 1004 * <p> 1005 * This method first checks if there is a security manager installed. 1006 * If so, the method calls the security manager's 1007 * <code>checkPermission</code> method with the 1008 * url.openConnection().getPermission() permission to ensure 1009 * that the image creation is allowed. For compatibility 1010 * with pre-1.2 security managers, if the access is denied with 1011 * <code>FilePermission</code> or <code>SocketPermission</code>, 1012 * the method throws <code>SecurityException</code> 1013 * if the corresponding 1.1-style SecurityManager.checkXXX method 1014 * also denies permission. 1015 * @param url the URL to use in fetching the pixel data. 1016 * @return an image which gets its pixel data from 1017 * the specified URL. 1018 * @throws SecurityException if a security manager exists and its 1019 * checkPermission method doesn't allow 1020 * the operation. 1021 * @see #getImage(java.net.URL) 1022 */ 1023 public abstract Image createImage(URL url); 1024 1025 /** 1026 * Prepares an image for rendering. 1027 * <p> 1028 * If the values of the width and height arguments are both 1029 * <code>-1</code>, this method prepares the image for rendering 1030 * on the default screen; otherwise, this method prepares an image 1031 * for rendering on the default screen at the specified width and height. 1032 * <p> 1033 * The image data is downloaded asynchronously in another thread, 1034 * and an appropriately scaled screen representation of the image is 1035 * generated. 1036 * <p> 1037 * This method is called by components <code>prepareImage</code> 1038 * methods. 1039 * <p> 1040 * Information on the flags returned by this method can be found 1041 * with the definition of the <code>ImageObserver</code> interface. 1042 1043 * @param image the image for which to prepare a 1044 * screen representation. 1045 * @param width the width of the desired screen 1046 * representation, or <code>-1</code>. 1047 * @param height the height of the desired screen 1048 * representation, or <code>-1</code>. 1049 * @param observer the <code>ImageObserver</code> 1050 * object to be notified as the 1051 * image is being prepared. 1052 * @return <code>true</code> if the image has already been 1053 * fully prepared; <code>false</code> otherwise. 1054 * @see java.awt.Component#prepareImage(java.awt.Image, 1055 * java.awt.image.ImageObserver) 1056 * @see java.awt.Component#prepareImage(java.awt.Image, 1057 * int, int, java.awt.image.ImageObserver) 1058 * @see java.awt.image.ImageObserver 1059 */ 1060 public abstract boolean prepareImage(Image image, int width, int height, 1061 ImageObserver observer); 1062 1063 /** 1064 * Indicates the construction status of a specified image that is 1065 * being prepared for display. 1066 * <p> 1067 * If the values of the width and height arguments are both 1068 * <code>-1</code>, this method returns the construction status of 1069 * a screen representation of the specified image in this toolkit. 1070 * Otherwise, this method returns the construction status of a 1071 * scaled representation of the image at the specified width 1072 * and height. 1073 * <p> 1074 * This method does not cause the image to begin loading. 1075 * An application must call <code>prepareImage</code> to force 1076 * the loading of an image. 1077 * <p> 1078 * This method is called by the component's <code>checkImage</code> 1079 * methods. 1080 * <p> 1081 * Information on the flags returned by this method can be found 1082 * with the definition of the <code>ImageObserver</code> interface. 1083 * @param image the image whose status is being checked. 1084 * @param width the width of the scaled version whose status is 1085 * being checked, or <code>-1</code>. 1086 * @param height the height of the scaled version whose status 1087 * is being checked, or <code>-1</code>. 1088 * @param observer the <code>ImageObserver</code> object to be 1089 * notified as the image is being prepared. 1090 * @return the bitwise inclusive <strong>OR</strong> of the 1091 * <code>ImageObserver</code> flags for the 1092 * image data that is currently available. 1093 * @see java.awt.Toolkit#prepareImage(java.awt.Image, 1094 * int, int, java.awt.image.ImageObserver) 1095 * @see java.awt.Component#checkImage(java.awt.Image, 1096 * java.awt.image.ImageObserver) 1097 * @see java.awt.Component#checkImage(java.awt.Image, 1098 * int, int, java.awt.image.ImageObserver) 1099 * @see java.awt.image.ImageObserver 1100 */ 1101 public abstract int checkImage(Image image, int width, int height, 1102 ImageObserver observer); 1103 1104 /** 1105 * Creates an image with the specified image producer. 1106 * @param producer the image producer to be used. 1107 * @return an image with the specified image producer. 1108 * @see java.awt.Image 1109 * @see java.awt.image.ImageProducer 1110 * @see java.awt.Component#createImage(java.awt.image.ImageProducer) 1111 */ 1112 public abstract Image createImage(ImageProducer producer); 1113 1114 /** 1115 * Creates an image which decodes the image stored in the specified 1116 * byte array. 1117 * <p> 1118 * The data must be in some image format, such as GIF or JPEG, 1119 * that is supported by this toolkit. 1120 * @param imagedata an array of bytes, representing 1121 * image data in a supported image format. 1122 * @return an image. 1123 * @since JDK1.1 1124 */ 1125 public Image createImage(byte[] imagedata) { 1126 return createImage(imagedata, 0, imagedata.length); 1127 } 1128 1129 /** 1130 * Creates an image which decodes the image stored in the specified 1131 * byte array, and at the specified offset and length. 1132 * The data must be in some image format, such as GIF or JPEG, 1133 * that is supported by this toolkit. 1134 * @param imagedata an array of bytes, representing 1135 * image data in a supported image format. 1136 * @param imageoffset the offset of the beginning 1137 * of the data in the array. 1138 * @param imagelength the length of the data in the array. 1139 * @return an image. 1140 * @since JDK1.1 1141 */ 1142 public abstract Image createImage(byte[] imagedata, 1143 int imageoffset, 1144 int imagelength); 1145 1146 /** 1147 * Gets a <code>PrintJob</code> object which is the result of initiating 1148 * a print operation on the toolkit's platform. 1149 * <p> 1150 * Each actual implementation of this method should first check if there 1151 * is a security manager installed. If there is, the method should call 1152 * the security manager's <code>checkPrintJobAccess</code> method to 1153 * ensure initiation of a print operation is allowed. If the default 1154 * implementation of <code>checkPrintJobAccess</code> is used (that is, 1155 * that method is not overriden), then this results in a call to the 1156 * security manager's <code>checkPermission</code> method with a <code> 1157 * RuntimePermission("queuePrintJob")</code> permission. 1158 * 1159 * @param frame the parent of the print dialog. May not be null. 1160 * @param jobtitle the title of the PrintJob. A null title is equivalent 1161 * to "". 1162 * @param props a Properties object containing zero or more properties. 1163 * Properties are not standardized and are not consistent across 1164 * implementations. Because of this, PrintJobs which require job 1165 * and page control should use the version of this function which 1166 * takes JobAttributes and PageAttributes objects. This object 1167 * may be updated to reflect the user's job choices on exit. May 1168 * be null. 1169 * @return a <code>PrintJob</code> object, or <code>null</code> if the 1170 * user cancelled the print job. 1171 * @throws NullPointerException if frame is null 1172 * @throws SecurityException if this thread is not allowed to initiate a 1173 * print job request 1174 * @see java.awt.GraphicsEnvironment#isHeadless 1175 * @see java.awt.PrintJob 1176 * @see java.lang.RuntimePermission 1177 * @since JDK1.1 1178 */ 1179 public abstract PrintJob getPrintJob(Frame frame, String jobtitle, 1180 Properties props); 1181 1182 /** 1183 * Gets a <code>PrintJob</code> object which is the result of initiating 1184 * a print operation on the toolkit's platform. 1185 * <p> 1186 * Each actual implementation of this method should first check if there 1187 * is a security manager installed. If there is, the method should call 1188 * the security manager's <code>checkPrintJobAccess</code> method to 1189 * ensure initiation of a print operation is allowed. If the default 1190 * implementation of <code>checkPrintJobAccess</code> is used (that is, 1191 * that method is not overriden), then this results in a call to the 1192 * security manager's <code>checkPermission</code> method with a <code> 1193 * RuntimePermission("queuePrintJob")</code> permission. 1194 * 1195 * @param frame the parent of the print dialog. May not be null. 1196 * @param jobtitle the title of the PrintJob. A null title is equivalent 1197 * to "". 1198 * @param jobAttributes a set of job attributes which will control the 1199 * PrintJob. The attributes will be updated to reflect the user's 1200 * choices as outlined in the JobAttributes documentation. May be 1201 * null. 1202 * @param pageAttributes a set of page attributes which will control the 1203 * PrintJob. The attributes will be applied to every page in the 1204 * job. The attributes will be updated to reflect the user's 1205 * choices as outlined in the PageAttributes documentation. May be 1206 * null. 1207 * @return a <code>PrintJob</code> object, or <code>null</code> if the 1208 * user cancelled the print job. 1209 * @throws NullPointerException if frame is null 1210 * @throws IllegalArgumentException if pageAttributes specifies differing 1211 * cross feed and feed resolutions. Also if this thread has 1212 * access to the file system and jobAttributes specifies 1213 * print to file, and the specified destination file exists but 1214 * is a directory rather than a regular file, does not exist but 1215 * cannot be created, or cannot be opened for any other reason. 1216 * However in the case of print to file, if a dialog is also 1217 * requested to be displayed then the user will be given an 1218 * opportunity to select a file and proceed with printing. 1219 * The dialog will ensure that the selected output file 1220 * is valid before returning from this method. 1221 * @throws SecurityException if this thread is not allowed to initiate a 1222 * print job request, or if jobAttributes specifies print to file, 1223 * and this thread is not allowed to access the file system 1224 * @see java.awt.PrintJob 1225 * @see java.awt.GraphicsEnvironment#isHeadless 1226 * @see java.lang.RuntimePermission 1227 * @see java.awt.JobAttributes 1228 * @see java.awt.PageAttributes 1229 * @since 1.3 1230 */ 1231 public PrintJob getPrintJob(Frame frame, String jobtitle, 1232 JobAttributes jobAttributes, 1233 PageAttributes pageAttributes) { 1234 // Override to add printing support with new job/page control classes 1235 1236 if (this != Toolkit.getDefaultToolkit()) { 1237 return Toolkit.getDefaultToolkit().getPrintJob(frame, jobtitle, 1238 jobAttributes, 1239 pageAttributes); 1240 } else { 1241 return getPrintJob(frame, jobtitle, null); 1242 } 1243 } 1244 1245 /** 1246 * Emits an audio beep depending on native system settings and hardware 1247 * capabilities. 1248 * @since JDK1.1 1249 */ 1250 public abstract void beep(); 1251 1252 /** 1253 * Gets the singleton instance of the system Clipboard which interfaces 1254 * with clipboard facilities provided by the native platform. This 1255 * clipboard enables data transfer between Java programs and native 1256 * applications which use native clipboard facilities. 1257 * <p> 1258 * In addition to any and all formats specified in the flavormap.properties 1259 * file, or other file specified by the <code>AWT.DnD.flavorMapFileURL 1260 * </code> Toolkit property, text returned by the system Clipboard's <code> 1261 * getTransferData()</code> method is available in the following flavors: 1262 * <ul> 1263 * <li>DataFlavor.stringFlavor</li> 1264 * <li>DataFlavor.plainTextFlavor (<b>deprecated</b>)</li> 1265 * </ul> 1266 * As with <code>java.awt.datatransfer.StringSelection</code>, if the 1267 * requested flavor is <code>DataFlavor.plainTextFlavor</code>, or an 1268 * equivalent flavor, a Reader is returned. <b>Note:</b> The behavior of 1269 * the system Clipboard's <code>getTransferData()</code> method for <code> 1270 * DataFlavor.plainTextFlavor</code>, and equivalent DataFlavors, is 1271 * inconsistent with the definition of <code>DataFlavor.plainTextFlavor 1272 * </code>. Because of this, support for <code> 1273 * DataFlavor.plainTextFlavor</code>, and equivalent flavors, is 1274 * <b>deprecated</b>. 1275 * <p> 1276 * Each actual implementation of this method should first check if there 1277 * is a security manager installed. If there is, the method should call 1278 * the security manager's {@link SecurityManager#checkPermission 1279 * checkPermission} method to check {@code AWTPermission("accessClipboard")}. 1280 * 1281 * @return the system Clipboard 1282 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 1283 * returns true 1284 * @see java.awt.GraphicsEnvironment#isHeadless 1285 * @see java.awt.datatransfer.Clipboard 1286 * @see java.awt.datatransfer.StringSelection 1287 * @see java.awt.datatransfer.DataFlavor#stringFlavor 1288 * @see java.awt.datatransfer.DataFlavor#plainTextFlavor 1289 * @see java.io.Reader 1290 * @see java.awt.AWTPermission 1291 * @since JDK1.1 1292 */ 1293 public abstract Clipboard getSystemClipboard() 1294 throws HeadlessException; 1295 1296 /** 1297 * Gets the singleton instance of the system selection as a 1298 * <code>Clipboard</code> object. This allows an application to read and 1299 * modify the current, system-wide selection. 1300 * <p> 1301 * An application is responsible for updating the system selection whenever 1302 * the user selects text, using either the mouse or the keyboard. 1303 * Typically, this is implemented by installing a 1304 * <code>FocusListener</code> on all <code>Component</code>s which support 1305 * text selection, and, between <code>FOCUS_GAINED</code> and 1306 * <code>FOCUS_LOST</code> events delivered to that <code>Component</code>, 1307 * updating the system selection <code>Clipboard</code> when the selection 1308 * changes inside the <code>Component</code>. Properly updating the system 1309 * selection ensures that a Java application will interact correctly with 1310 * native applications and other Java applications running simultaneously 1311 * on the system. Note that <code>java.awt.TextComponent</code> and 1312 * <code>javax.swing.text.JTextComponent</code> already adhere to this 1313 * policy. When using these classes, and their subclasses, developers need 1314 * not write any additional code. 1315 * <p> 1316 * Some platforms do not support a system selection <code>Clipboard</code>. 1317 * On those platforms, this method will return <code>null</code>. In such a 1318 * case, an application is absolved from its responsibility to update the 1319 * system selection <code>Clipboard</code> as described above. 1320 * <p> 1321 * Each actual implementation of this method should first check if there 1322 * is a security manager installed. If there is, the method should call 1323 * the security manager's {@link SecurityManager#checkPermission 1324 * checkPermission} method to check {@code AWTPermission("accessClipboard")}. 1325 * 1326 * @return the system selection as a <code>Clipboard</code>, or 1327 * <code>null</code> if the native platform does not support a 1328 * system selection <code>Clipboard</code> 1329 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 1330 * returns true 1331 * 1332 * @see java.awt.datatransfer.Clipboard 1333 * @see java.awt.event.FocusListener 1334 * @see java.awt.event.FocusEvent#FOCUS_GAINED 1335 * @see java.awt.event.FocusEvent#FOCUS_LOST 1336 * @see TextComponent 1337 * @see javax.swing.text.JTextComponent 1338 * @see AWTPermission 1339 * @see GraphicsEnvironment#isHeadless 1340 * @since 1.4 1341 */ 1342 public Clipboard getSystemSelection() throws HeadlessException { 1343 GraphicsEnvironment.checkHeadless(); 1344 1345 if (this != Toolkit.getDefaultToolkit()) { 1346 return Toolkit.getDefaultToolkit().getSystemSelection(); 1347 } else { 1348 GraphicsEnvironment.checkHeadless(); 1349 return null; 1350 } 1351 } 1352 1353 /** 1354 * Determines which modifier key is the appropriate accelerator 1355 * key for menu shortcuts. 1356 * <p> 1357 * Menu shortcuts, which are embodied in the 1358 * <code>MenuShortcut</code> class, are handled by the 1359 * <code>MenuBar</code> class. 1360 * <p> 1361 * By default, this method returns <code>Event.CTRL_MASK</code>. 1362 * Toolkit implementations should override this method if the 1363 * <b>Control</b> key isn't the correct key for accelerators. 1364 * @return the modifier mask on the <code>Event</code> class 1365 * that is used for menu shortcuts on this toolkit. 1366 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 1367 * returns true 1368 * @see java.awt.GraphicsEnvironment#isHeadless 1369 * @see java.awt.MenuBar 1370 * @see java.awt.MenuShortcut 1371 * @since JDK1.1 1372 */ 1373 public int getMenuShortcutKeyMask() throws HeadlessException { 1374 GraphicsEnvironment.checkHeadless(); 1375 1376 return Event.CTRL_MASK; 1377 } 1378 1379 /** 1380 * Returns whether the given locking key on the keyboard is currently in 1381 * its "on" state. 1382 * Valid key codes are 1383 * {@link java.awt.event.KeyEvent#VK_CAPS_LOCK VK_CAPS_LOCK}, 1384 * {@link java.awt.event.KeyEvent#VK_NUM_LOCK VK_NUM_LOCK}, 1385 * {@link java.awt.event.KeyEvent#VK_SCROLL_LOCK VK_SCROLL_LOCK}, and 1386 * {@link java.awt.event.KeyEvent#VK_KANA_LOCK VK_KANA_LOCK}. 1387 * 1388 * @exception java.lang.IllegalArgumentException if <code>keyCode</code> 1389 * is not one of the valid key codes 1390 * @exception java.lang.UnsupportedOperationException if the host system doesn't 1391 * allow getting the state of this key programmatically, or if the keyboard 1392 * doesn't have this key 1393 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 1394 * returns true 1395 * @see java.awt.GraphicsEnvironment#isHeadless 1396 * @since 1.3 1397 */ 1398 public boolean getLockingKeyState(int keyCode) 1399 throws UnsupportedOperationException 1400 { 1401 GraphicsEnvironment.checkHeadless(); 1402 1403 if (! (keyCode == KeyEvent.VK_CAPS_LOCK || keyCode == KeyEvent.VK_NUM_LOCK || 1404 keyCode == KeyEvent.VK_SCROLL_LOCK || keyCode == KeyEvent.VK_KANA_LOCK)) { 1405 throw new IllegalArgumentException("invalid key for Toolkit.getLockingKeyState"); 1406 } 1407 throw new UnsupportedOperationException("Toolkit.getLockingKeyState"); 1408 } 1409 1410 /** 1411 * Sets the state of the given locking key on the keyboard. 1412 * Valid key codes are 1413 * {@link java.awt.event.KeyEvent#VK_CAPS_LOCK VK_CAPS_LOCK}, 1414 * {@link java.awt.event.KeyEvent#VK_NUM_LOCK VK_NUM_LOCK}, 1415 * {@link java.awt.event.KeyEvent#VK_SCROLL_LOCK VK_SCROLL_LOCK}, and 1416 * {@link java.awt.event.KeyEvent#VK_KANA_LOCK VK_KANA_LOCK}. 1417 * <p> 1418 * Depending on the platform, setting the state of a locking key may 1419 * involve event processing and therefore may not be immediately 1420 * observable through getLockingKeyState. 1421 * 1422 * @exception java.lang.IllegalArgumentException if <code>keyCode</code> 1423 * is not one of the valid key codes 1424 * @exception java.lang.UnsupportedOperationException if the host system doesn't 1425 * allow setting the state of this key programmatically, or if the keyboard 1426 * doesn't have this key 1427 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 1428 * returns true 1429 * @see java.awt.GraphicsEnvironment#isHeadless 1430 * @since 1.3 1431 */ 1432 public void setLockingKeyState(int keyCode, boolean on) 1433 throws UnsupportedOperationException 1434 { 1435 GraphicsEnvironment.checkHeadless(); 1436 1437 if (! (keyCode == KeyEvent.VK_CAPS_LOCK || keyCode == KeyEvent.VK_NUM_LOCK || 1438 keyCode == KeyEvent.VK_SCROLL_LOCK || keyCode == KeyEvent.VK_KANA_LOCK)) { 1439 throw new IllegalArgumentException("invalid key for Toolkit.setLockingKeyState"); 1440 } 1441 throw new UnsupportedOperationException("Toolkit.setLockingKeyState"); 1442 } 1443 1444 /** 1445 * Give native peers the ability to query the native container 1446 * given a native component (eg the direct parent may be lightweight). 1447 */ 1448 protected static Container getNativeContainer(Component c) { 1449 return c.getNativeContainer(); 1450 } 1451 1452 /** 1453 * Creates a new custom cursor object. 1454 * If the image to display is invalid, the cursor will be hidden (made 1455 * completely transparent), and the hotspot will be set to (0, 0). 1456 * 1457 * <p>Note that multi-frame images are invalid and may cause this 1458 * method to hang. 1459 * 1460 * @param cursor the image to display when the cursor is actived 1461 * @param hotSpot the X and Y of the large cursor's hot spot; the 1462 * hotSpot values must be less than the Dimension returned by 1463 * <code>getBestCursorSize</code> 1464 * @param name a localized description of the cursor, for Java Accessibility use 1465 * @exception IndexOutOfBoundsException if the hotSpot values are outside 1466 * the bounds of the cursor 1467 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 1468 * returns true 1469 * @see java.awt.GraphicsEnvironment#isHeadless 1470 * @since 1.2 1471 */ 1472 public Cursor createCustomCursor(Image cursor, Point hotSpot, String name) 1473 throws IndexOutOfBoundsException, HeadlessException 1474 { 1475 // Override to implement custom cursor support. 1476 if (this != Toolkit.getDefaultToolkit()) { 1477 return Toolkit.getDefaultToolkit(). 1478 createCustomCursor(cursor, hotSpot, name); 1479 } else { 1480 return new Cursor(Cursor.DEFAULT_CURSOR); 1481 } 1482 } 1483 1484 /** 1485 * Returns the supported cursor dimension which is closest to the desired 1486 * sizes. Systems which only support a single cursor size will return that 1487 * size regardless of the desired sizes. Systems which don't support custom 1488 * cursors will return a dimension of 0, 0. <p> 1489 * Note: if an image is used whose dimensions don't match a supported size 1490 * (as returned by this method), the Toolkit implementation will attempt to 1491 * resize the image to a supported size. 1492 * Since converting low-resolution images is difficult, 1493 * no guarantees are made as to the quality of a cursor image which isn't a 1494 * supported size. It is therefore recommended that this method 1495 * be called and an appropriate image used so no image conversion is made. 1496 * 1497 * @param preferredWidth the preferred cursor width the component would like 1498 * to use. 1499 * @param preferredHeight the preferred cursor height the component would like 1500 * to use. 1501 * @return the closest matching supported cursor size, or a dimension of 0,0 if 1502 * the Toolkit implementation doesn't support custom cursors. 1503 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 1504 * returns true 1505 * @see java.awt.GraphicsEnvironment#isHeadless 1506 * @since 1.2 1507 */ 1508 public Dimension getBestCursorSize(int preferredWidth, 1509 int preferredHeight) throws HeadlessException { 1510 GraphicsEnvironment.checkHeadless(); 1511 1512 // Override to implement custom cursor support. 1513 if (this != Toolkit.getDefaultToolkit()) { 1514 return Toolkit.getDefaultToolkit(). 1515 getBestCursorSize(preferredWidth, preferredHeight); 1516 } else { 1517 return new Dimension(0, 0); 1518 } 1519 } 1520 1521 /** 1522 * Returns the maximum number of colors the Toolkit supports in a custom cursor 1523 * palette.<p> 1524 * Note: if an image is used which has more colors in its palette than 1525 * the supported maximum, the Toolkit implementation will attempt to flatten the 1526 * palette to the maximum. Since converting low-resolution images is difficult, 1527 * no guarantees are made as to the quality of a cursor image which has more 1528 * colors than the system supports. It is therefore recommended that this method 1529 * be called and an appropriate image used so no image conversion is made. 1530 * 1531 * @return the maximum number of colors, or zero if custom cursors are not 1532 * supported by this Toolkit implementation. 1533 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 1534 * returns true 1535 * @see java.awt.GraphicsEnvironment#isHeadless 1536 * @since 1.2 1537 */ 1538 public int getMaximumCursorColors() throws HeadlessException { 1539 GraphicsEnvironment.checkHeadless(); 1540 1541 // Override to implement custom cursor support. 1542 if (this != Toolkit.getDefaultToolkit()) { 1543 return Toolkit.getDefaultToolkit().getMaximumCursorColors(); 1544 } else { 1545 return 0; 1546 } 1547 } 1548 1549 /** 1550 * Returns whether Toolkit supports this state for 1551 * <code>Frame</code>s. This method tells whether the <em>UI 1552 * concept</em> of, say, maximization or iconification is 1553 * supported. It will always return false for "compound" states 1554 * like <code>Frame.ICONIFIED|Frame.MAXIMIZED_VERT</code>. 1555 * In other words, the rule of thumb is that only queries with a 1556 * single frame state constant as an argument are meaningful. 1557 * <p>Note that supporting a given concept is a platform- 1558 * dependent feature. Due to native limitations the Toolkit 1559 * object may report a particular state as supported, however at 1560 * the same time the Toolkit object will be unable to apply the 1561 * state to a given frame. This circumstance has two following 1562 * consequences: 1563 * <ul> 1564 * <li>Only the return value of {@code false} for the present 1565 * method actually indicates that the given state is not 1566 * supported. If the method returns {@code true} the given state 1567 * may still be unsupported and/or unavailable for a particular 1568 * frame. 1569 * <li>The developer should consider examining the value of the 1570 * {@link java.awt.event.WindowEvent#getNewState} method of the 1571 * {@code WindowEvent} received through the {@link 1572 * java.awt.event.WindowStateListener}, rather than assuming 1573 * that the state given to the {@code setExtendedState()} method 1574 * will be definitely applied. For more information see the 1575 * documentation for the {@link Frame#setExtendedState} method. 1576 * </ul> 1577 * 1578 * @param state one of named frame state constants. 1579 * @return <code>true</code> is this frame state is supported by 1580 * this Toolkit implementation, <code>false</code> otherwise. 1581 * @exception HeadlessException 1582 * if <code>GraphicsEnvironment.isHeadless()</code> 1583 * returns <code>true</code>. 1584 * @see java.awt.Window#addWindowStateListener 1585 * @since 1.4 1586 */ 1587 public boolean isFrameStateSupported(int state) 1588 throws HeadlessException 1589 { 1590 GraphicsEnvironment.checkHeadless(); 1591 1592 if (this != Toolkit.getDefaultToolkit()) { 1593 return Toolkit.getDefaultToolkit(). 1594 isFrameStateSupported(state); 1595 } else { 1596 return (state == Frame.NORMAL); // others are not guaranteed 1597 } 1598 } 1599 1600 /** 1601 * Support for I18N: any visible strings should be stored in 1602 * sun.awt.resources.awt.properties. The ResourceBundle is stored 1603 * here, so that only one copy is maintained. 1604 */ 1605 private static ResourceBundle resources; 1606 private static ResourceBundle platformResources; 1607 1608 // called by platform toolkit 1609 private static void setPlatformResources(ResourceBundle bundle) { 1610 platformResources = bundle; 1611 } 1612 1613 /** 1614 * Initialize JNI field and method ids 1615 */ 1616 private static native void initIDs(); 1617 1618 /** 1619 * WARNING: This is a temporary workaround for a problem in the 1620 * way the AWT loads native libraries. A number of classes in the 1621 * AWT package have a native method, initIDs(), which initializes 1622 * the JNI field and method ids used in the native portion of 1623 * their implementation. 1624 * 1625 * Since the use and storage of these ids is done by the 1626 * implementation libraries, the implementation of these method is 1627 * provided by the particular AWT implementations (for example, 1628 * "Toolkit"s/Peer), such as Motif, Microsoft Windows, or Tiny. The 1629 * problem is that this means that the native libraries must be 1630 * loaded by the java.* classes, which do not necessarily know the 1631 * names of the libraries to load. A better way of doing this 1632 * would be to provide a separate library which defines java.awt.* 1633 * initIDs, and exports the relevant symbols out to the 1634 * implementation libraries. 1635 * 1636 * For now, we know it's done by the implementation, and we assume 1637 * that the name of the library is "awt". -br. 1638 * 1639 * If you change loadLibraries(), please add the change to 1640 * java.awt.image.ColorModel.loadLibraries(). Unfortunately, 1641 * classes can be loaded in java.awt.image that depend on 1642 * libawt and there is no way to call Toolkit.loadLibraries() 1643 * directly. -hung 1644 */ 1645 private static boolean loaded = false; 1646 static void loadLibraries() { 1647 if (!loaded) { 1648 java.security.AccessController.doPrivileged( 1649 new java.security.PrivilegedAction<Void>() { 1650 public Void run() { 1651 System.loadLibrary("awt"); 1652 return null; 1653 } 1654 }); 1655 loaded = true; 1656 } 1657 } 1658 1659 static { 1660 AWTAccessor.setToolkitAccessor( 1661 new AWTAccessor.ToolkitAccessor() { 1662 @Override 1663 public void setPlatformResources(ResourceBundle bundle) { 1664 Toolkit.setPlatformResources(bundle); 1665 } 1666 }); 1667 1668 java.security.AccessController.doPrivileged( 1669 new java.security.PrivilegedAction<Void>() { 1670 public Void run() { 1671 try { 1672 resources = 1673 ResourceBundle.getBundle("sun.awt.resources.awt", 1674 CoreResourceBundleControl.getRBControlInstance()); 1675 } catch (MissingResourceException e) { 1676 // No resource file; defaults will be used. 1677 } 1678 return null; 1679 } 1680 }); 1681 1682 // ensure that the proper libraries are loaded 1683 loadLibraries(); 1684 initAssistiveTechnologies(); 1685 if (!GraphicsEnvironment.isHeadless()) { 1686 initIDs(); 1687 } 1688 } 1689 1690 /** 1691 * Gets a property with the specified key and default. 1692 * This method returns defaultValue if the property is not found. 1693 */ 1694 public static String getProperty(String key, String defaultValue) { 1695 // first try platform specific bundle 1696 if (platformResources != null) { 1697 try { 1698 return platformResources.getString(key); 1699 } 1700 catch (MissingResourceException e) {} 1701 } 1702 1703 // then shared one 1704 if (resources != null) { 1705 try { 1706 return resources.getString(key); 1707 } 1708 catch (MissingResourceException e) {} 1709 } 1710 1711 return defaultValue; 1712 } 1713 1714 /** 1715 * Get the application's or applet's EventQueue instance. 1716 * Depending on the Toolkit implementation, different EventQueues 1717 * may be returned for different applets. Applets should 1718 * therefore not assume that the EventQueue instance returned 1719 * by this method will be shared by other applets or the system. 1720 * 1721 * <p> If there is a security manager then its 1722 * {@link SecurityManager#checkPermission checkPermission} method 1723 * is called to check {@code AWTPermission("accessEventQueue")}. 1724 * 1725 * @return the <code>EventQueue</code> object 1726 * @throws SecurityException 1727 * if a security manager is set and it denies access to 1728 * the {@code EventQueue} 1729 * @see java.awt.AWTPermission 1730 */ 1731 public final EventQueue getSystemEventQueue() { 1732 SecurityManager security = System.getSecurityManager(); 1733 if (security != null) { 1734 security.checkPermission(SecurityConstants.AWT.CHECK_AWT_EVENTQUEUE_PERMISSION); 1735 } 1736 return getSystemEventQueueImpl(); 1737 } 1738 1739 /** 1740 * Gets the application's or applet's <code>EventQueue</code> 1741 * instance, without checking access. For security reasons, 1742 * this can only be called from a <code>Toolkit</code> subclass. 1743 * @return the <code>EventQueue</code> object 1744 */ 1745 protected abstract EventQueue getSystemEventQueueImpl(); 1746 1747 /* Accessor method for use by AWT package routines. */ 1748 static EventQueue getEventQueue() { 1749 return getDefaultToolkit().getSystemEventQueueImpl(); 1750 } 1751 1752 /** 1753 * Creates the peer for a DragSourceContext. 1754 * Always throws InvalidDndOperationException if 1755 * GraphicsEnvironment.isHeadless() returns true. 1756 * @see java.awt.GraphicsEnvironment#isHeadless 1757 */ 1758 public abstract DragSourceContextPeer createDragSourceContextPeer(DragGestureEvent dge) throws InvalidDnDOperationException; 1759 1760 /** 1761 * Creates a concrete, platform dependent, subclass of the abstract 1762 * DragGestureRecognizer class requested, and associates it with the 1763 * DragSource, Component and DragGestureListener specified. 1764 * 1765 * subclasses should override this to provide their own implementation 1766 * 1767 * @param abstractRecognizerClass The abstract class of the required recognizer 1768 * @param ds The DragSource 1769 * @param c The Component target for the DragGestureRecognizer 1770 * @param srcActions The actions permitted for the gesture 1771 * @param dgl The DragGestureListener 1772 * 1773 * @return the new object or null. Always returns null if 1774 * GraphicsEnvironment.isHeadless() returns true. 1775 * @see java.awt.GraphicsEnvironment#isHeadless 1776 */ 1777 public <T extends DragGestureRecognizer> T 1778 createDragGestureRecognizer(Class<T> abstractRecognizerClass, 1779 DragSource ds, Component c, int srcActions, 1780 DragGestureListener dgl) 1781 { 1782 return null; 1783 } 1784 1785 /** 1786 * Obtains a value for the specified desktop property. 1787 * 1788 * A desktop property is a uniquely named value for a resource that 1789 * is Toolkit global in nature. Usually it also is an abstract 1790 * representation for an underlying platform dependent desktop setting. 1791 * For more information on desktop properties supported by the AWT see 1792 * <a href="doc-files/DesktopProperties.html">AWT Desktop Properties</a>. 1793 */ 1794 public final synchronized Object getDesktopProperty(String propertyName) { 1795 // This is a workaround for headless toolkits. It would be 1796 // better to override this method but it is declared final. 1797 // "this instanceof" syntax defeats polymorphism. 1798 // --mm, 03/03/00 1799 if (this instanceof HeadlessToolkit) { 1800 return ((HeadlessToolkit)this).getUnderlyingToolkit() 1801 .getDesktopProperty(propertyName); 1802 } 1803 1804 if (desktopProperties.isEmpty()) { 1805 initializeDesktopProperties(); 1806 } 1807 1808 Object value; 1809 1810 // This property should never be cached 1811 if (propertyName.equals("awt.dynamicLayoutSupported")) { 1812 value = lazilyLoadDesktopProperty(propertyName); 1813 return value; 1814 } 1815 1816 value = desktopProperties.get(propertyName); 1817 1818 if (value == null) { 1819 value = lazilyLoadDesktopProperty(propertyName); 1820 1821 if (value != null) { 1822 setDesktopProperty(propertyName, value); 1823 } 1824 } 1825 1826 /* for property "awt.font.desktophints" */ 1827 if (value instanceof RenderingHints) { 1828 value = ((RenderingHints)value).clone(); 1829 } 1830 1831 return value; 1832 } 1833 1834 /** 1835 * Sets the named desktop property to the specified value and fires a 1836 * property change event to notify any listeners that the value has changed. 1837 */ 1838 protected final void setDesktopProperty(String name, Object newValue) { 1839 // This is a workaround for headless toolkits. It would be 1840 // better to override this method but it is declared final. 1841 // "this instanceof" syntax defeats polymorphism. 1842 // --mm, 03/03/00 1843 if (this instanceof HeadlessToolkit) { 1844 ((HeadlessToolkit)this).getUnderlyingToolkit() 1845 .setDesktopProperty(name, newValue); 1846 return; 1847 } 1848 Object oldValue; 1849 1850 synchronized (this) { 1851 oldValue = desktopProperties.get(name); 1852 desktopProperties.put(name, newValue); 1853 } 1854 1855 // Don't fire change event if old and new values are null. 1856 // It helps to avoid recursive resending of WM_THEMECHANGED 1857 if (oldValue != null || newValue != null) { 1858 desktopPropsSupport.firePropertyChange(name, oldValue, newValue); 1859 } 1860 } 1861 1862 /** 1863 * an opportunity to lazily evaluate desktop property values. 1864 */ 1865 protected Object lazilyLoadDesktopProperty(String name) { 1866 return null; 1867 } 1868 1869 /** 1870 * initializeDesktopProperties 1871 */ 1872 protected void initializeDesktopProperties() { 1873 } 1874 1875 /** 1876 * Adds the specified property change listener for the named desktop 1877 * property. When a {@link java.beans.PropertyChangeListenerProxy} object is added, 1878 * its property name is ignored, and the wrapped listener is added. 1879 * If {@code name} is {@code null} or {@code pcl} is {@code null}, 1880 * no exception is thrown and no action is performed. 1881 * 1882 * @param name The name of the property to listen for 1883 * @param pcl The property change listener 1884 * @see PropertyChangeSupport#addPropertyChangeListener(String, 1885 PropertyChangeListener) 1886 * @since 1.2 1887 */ 1888 public void addPropertyChangeListener(String name, PropertyChangeListener pcl) { 1889 desktopPropsSupport.addPropertyChangeListener(name, pcl); 1890 } 1891 1892 /** 1893 * Removes the specified property change listener for the named 1894 * desktop property. When a {@link java.beans.PropertyChangeListenerProxy} object 1895 * is removed, its property name is ignored, and 1896 * the wrapped listener is removed. 1897 * If {@code name} is {@code null} or {@code pcl} is {@code null}, 1898 * no exception is thrown and no action is performed. 1899 * 1900 * @param name The name of the property to remove 1901 * @param pcl The property change listener 1902 * @see PropertyChangeSupport#removePropertyChangeListener(String, 1903 PropertyChangeListener) 1904 * @since 1.2 1905 */ 1906 public void removePropertyChangeListener(String name, PropertyChangeListener pcl) { 1907 desktopPropsSupport.removePropertyChangeListener(name, pcl); 1908 } 1909 1910 /** 1911 * Returns an array of all the property change listeners 1912 * registered on this toolkit. The returned array 1913 * contains {@link java.beans.PropertyChangeListenerProxy} objects 1914 * that associate listeners with the names of desktop properties. 1915 * 1916 * @return all of this toolkit's {@link PropertyChangeListener} 1917 * objects wrapped in {@code java.beans.PropertyChangeListenerProxy} objects 1918 * or an empty array if no listeners are added 1919 * 1920 * @see PropertyChangeSupport#getPropertyChangeListeners() 1921 * @since 1.4 1922 */ 1923 public PropertyChangeListener[] getPropertyChangeListeners() { 1924 return desktopPropsSupport.getPropertyChangeListeners(); 1925 } 1926 1927 /** 1928 * Returns an array of all property change listeners 1929 * associated with the specified name of a desktop property. 1930 * 1931 * @param propertyName the named property 1932 * @return all of the {@code PropertyChangeListener} objects 1933 * associated with the specified name of a desktop property 1934 * or an empty array if no such listeners are added 1935 * 1936 * @see PropertyChangeSupport#getPropertyChangeListeners(String) 1937 * @since 1.4 1938 */ 1939 public PropertyChangeListener[] getPropertyChangeListeners(String propertyName) { 1940 return desktopPropsSupport.getPropertyChangeListeners(propertyName); 1941 } 1942 1943 protected final Map<String,Object> desktopProperties = 1944 new HashMap<String,Object>(); 1945 protected final PropertyChangeSupport desktopPropsSupport = 1946 Toolkit.createPropertyChangeSupport(this); 1947 1948 /** 1949 * Returns whether the always-on-top mode is supported by this toolkit. 1950 * To detect whether the always-on-top mode is supported for a 1951 * particular Window, use {@link Window#isAlwaysOnTopSupported}. 1952 * @return <code>true</code>, if current toolkit supports the always-on-top mode, 1953 * otherwise returns <code>false</code> 1954 * @see Window#isAlwaysOnTopSupported 1955 * @see Window#setAlwaysOnTop(boolean) 1956 * @since 1.6 1957 */ 1958 public boolean isAlwaysOnTopSupported() { 1959 return true; 1960 } 1961 1962 /** 1963 * Returns whether the given modality type is supported by this toolkit. If 1964 * a dialog with unsupported modality type is created, then 1965 * <code>Dialog.ModalityType.MODELESS</code> is used instead. 1966 * 1967 * @param modalityType modality type to be checked for support by this toolkit 1968 * 1969 * @return <code>true</code>, if current toolkit supports given modality 1970 * type, <code>false</code> otherwise 1971 * 1972 * @see java.awt.Dialog.ModalityType 1973 * @see java.awt.Dialog#getModalityType 1974 * @see java.awt.Dialog#setModalityType 1975 * 1976 * @since 1.6 1977 */ 1978 public abstract boolean isModalityTypeSupported(Dialog.ModalityType modalityType); 1979 1980 /** 1981 * Returns whether the given modal exclusion type is supported by this 1982 * toolkit. If an unsupported modal exclusion type property is set on a window, 1983 * then <code>Dialog.ModalExclusionType.NO_EXCLUDE</code> is used instead. 1984 * 1985 * @param modalExclusionType modal exclusion type to be checked for support by this toolkit 1986 * 1987 * @return <code>true</code>, if current toolkit supports given modal exclusion 1988 * type, <code>false</code> otherwise 1989 * 1990 * @see java.awt.Dialog.ModalExclusionType 1991 * @see java.awt.Window#getModalExclusionType 1992 * @see java.awt.Window#setModalExclusionType 1993 * 1994 * @since 1.6 1995 */ 1996 public abstract boolean isModalExclusionTypeSupported(Dialog.ModalExclusionType modalExclusionType); 1997 1998 // 8014718: logging has been removed from SunToolkit 1999 2000 private static final int LONG_BITS = 64; 2001 private int[] calls = new int[LONG_BITS]; 2002 private static volatile long enabledOnToolkitMask; 2003 private AWTEventListener eventListener = null; 2004 private WeakHashMap<AWTEventListener, SelectiveAWTEventListener> listener2SelectiveListener = new WeakHashMap<>(); 2005 2006 /* 2007 * Extracts a "pure" AWTEventListener from a AWTEventListenerProxy, 2008 * if the listener is proxied. 2009 */ 2010 static private AWTEventListener deProxyAWTEventListener(AWTEventListener l) 2011 { 2012 AWTEventListener localL = l; 2013 2014 if (localL == null) { 2015 return null; 2016 } 2017 // if user passed in a AWTEventListenerProxy object, extract 2018 // the listener 2019 if (l instanceof AWTEventListenerProxy) { 2020 localL = ((AWTEventListenerProxy)l).getListener(); 2021 } 2022 return localL; 2023 } 2024 2025 /** 2026 * Adds an AWTEventListener to receive all AWTEvents dispatched 2027 * system-wide that conform to the given <code>eventMask</code>. 2028 * <p> 2029 * First, if there is a security manager, its <code>checkPermission</code> 2030 * method is called with an 2031 * <code>AWTPermission("listenToAllAWTEvents")</code> permission. 2032 * This may result in a SecurityException. 2033 * <p> 2034 * <code>eventMask</code> is a bitmask of event types to receive. 2035 * It is constructed by bitwise OR-ing together the event masks 2036 * defined in <code>AWTEvent</code>. 2037 * <p> 2038 * Note: event listener use is not recommended for normal 2039 * application use, but are intended solely to support special 2040 * purpose facilities including support for accessibility, 2041 * event record/playback, and diagnostic tracing. 2042 * 2043 * If listener is null, no exception is thrown and no action is performed. 2044 * 2045 * @param listener the event listener. 2046 * @param eventMask the bitmask of event types to receive 2047 * @throws SecurityException 2048 * if a security manager exists and its 2049 * <code>checkPermission</code> method doesn't allow the operation. 2050 * @see #removeAWTEventListener 2051 * @see #getAWTEventListeners 2052 * @see SecurityManager#checkPermission 2053 * @see java.awt.AWTEvent 2054 * @see java.awt.AWTPermission 2055 * @see java.awt.event.AWTEventListener 2056 * @see java.awt.event.AWTEventListenerProxy 2057 * @since 1.2 2058 */ 2059 public void addAWTEventListener(AWTEventListener listener, long eventMask) { 2060 AWTEventListener localL = deProxyAWTEventListener(listener); 2061 2062 if (localL == null) { 2063 return; 2064 } 2065 SecurityManager security = System.getSecurityManager(); 2066 if (security != null) { 2067 security.checkPermission(SecurityConstants.AWT.ALL_AWT_EVENTS_PERMISSION); 2068 } 2069 synchronized (this) { 2070 SelectiveAWTEventListener selectiveListener = 2071 listener2SelectiveListener.get(localL); 2072 2073 if (selectiveListener == null) { 2074 // Create a new selectiveListener. 2075 selectiveListener = new SelectiveAWTEventListener(localL, 2076 eventMask); 2077 listener2SelectiveListener.put(localL, selectiveListener); 2078 eventListener = ToolkitEventMulticaster.add(eventListener, 2079 selectiveListener); 2080 } 2081 // OR the eventMask into the selectiveListener's event mask. 2082 selectiveListener.orEventMasks(eventMask); 2083 2084 enabledOnToolkitMask |= eventMask; 2085 2086 long mask = eventMask; 2087 for (int i=0; i<LONG_BITS; i++) { 2088 // If no bits are set, break out of loop. 2089 if (mask == 0) { 2090 break; 2091 } 2092 if ((mask & 1L) != 0) { // Always test bit 0. 2093 calls[i]++; 2094 } 2095 mask >>>= 1; // Right shift, fill with zeros on left. 2096 } 2097 } 2098 } 2099 2100 /** 2101 * Removes an AWTEventListener from receiving dispatched AWTEvents. 2102 * <p> 2103 * First, if there is a security manager, its <code>checkPermission</code> 2104 * method is called with an 2105 * <code>AWTPermission("listenToAllAWTEvents")</code> permission. 2106 * This may result in a SecurityException. 2107 * <p> 2108 * Note: event listener use is not recommended for normal 2109 * application use, but are intended solely to support special 2110 * purpose facilities including support for accessibility, 2111 * event record/playback, and diagnostic tracing. 2112 * 2113 * If listener is null, no exception is thrown and no action is performed. 2114 * 2115 * @param listener the event listener. 2116 * @throws SecurityException 2117 * if a security manager exists and its 2118 * <code>checkPermission</code> method doesn't allow the operation. 2119 * @see #addAWTEventListener 2120 * @see #getAWTEventListeners 2121 * @see SecurityManager#checkPermission 2122 * @see java.awt.AWTEvent 2123 * @see java.awt.AWTPermission 2124 * @see java.awt.event.AWTEventListener 2125 * @see java.awt.event.AWTEventListenerProxy 2126 * @since 1.2 2127 */ 2128 public void removeAWTEventListener(AWTEventListener listener) { 2129 AWTEventListener localL = deProxyAWTEventListener(listener); 2130 2131 if (listener == null) { 2132 return; 2133 } 2134 SecurityManager security = System.getSecurityManager(); 2135 if (security != null) { 2136 security.checkPermission(SecurityConstants.AWT.ALL_AWT_EVENTS_PERMISSION); 2137 } 2138 2139 synchronized (this) { 2140 SelectiveAWTEventListener selectiveListener = 2141 listener2SelectiveListener.get(localL); 2142 2143 if (selectiveListener != null) { 2144 listener2SelectiveListener.remove(localL); 2145 int[] listenerCalls = selectiveListener.getCalls(); 2146 for (int i=0; i<LONG_BITS; i++) { 2147 calls[i] -= listenerCalls[i]; 2148 assert calls[i] >= 0: "Negative Listeners count"; 2149 2150 if (calls[i] == 0) { 2151 enabledOnToolkitMask &= ~(1L<<i); 2152 } 2153 } 2154 } 2155 eventListener = ToolkitEventMulticaster.remove(eventListener, 2156 (selectiveListener == null) ? localL : selectiveListener); 2157 } 2158 } 2159 2160 static boolean enabledOnToolkit(long eventMask) { 2161 return (enabledOnToolkitMask & eventMask) != 0; 2162 } 2163 2164 synchronized int countAWTEventListeners(long eventMask) { 2165 int ci = 0; 2166 for (; eventMask != 0; eventMask >>>= 1, ci++) { 2167 } 2168 ci--; 2169 return calls[ci]; 2170 } 2171 /** 2172 * Returns an array of all the <code>AWTEventListener</code>s 2173 * registered on this toolkit. 2174 * If there is a security manager, its {@code checkPermission} 2175 * method is called with an 2176 * {@code AWTPermission("listenToAllAWTEvents")} permission. 2177 * This may result in a SecurityException. 2178 * Listeners can be returned 2179 * within <code>AWTEventListenerProxy</code> objects, which also contain 2180 * the event mask for the given listener. 2181 * Note that listener objects 2182 * added multiple times appear only once in the returned array. 2183 * 2184 * @return all of the <code>AWTEventListener</code>s or an empty 2185 * array if no listeners are currently registered 2186 * @throws SecurityException 2187 * if a security manager exists and its 2188 * <code>checkPermission</code> method doesn't allow the operation. 2189 * @see #addAWTEventListener 2190 * @see #removeAWTEventListener 2191 * @see SecurityManager#checkPermission 2192 * @see java.awt.AWTEvent 2193 * @see java.awt.AWTPermission 2194 * @see java.awt.event.AWTEventListener 2195 * @see java.awt.event.AWTEventListenerProxy 2196 * @since 1.4 2197 */ 2198 public AWTEventListener[] getAWTEventListeners() { 2199 SecurityManager security = System.getSecurityManager(); 2200 if (security != null) { 2201 security.checkPermission(SecurityConstants.AWT.ALL_AWT_EVENTS_PERMISSION); 2202 } 2203 synchronized (this) { 2204 EventListener[] la = ToolkitEventMulticaster.getListeners(eventListener,AWTEventListener.class); 2205 2206 AWTEventListener[] ret = new AWTEventListener[la.length]; 2207 for (int i = 0; i < la.length; i++) { 2208 SelectiveAWTEventListener sael = (SelectiveAWTEventListener)la[i]; 2209 AWTEventListener tempL = sael.getListener(); 2210 //assert tempL is not an AWTEventListenerProxy - we should 2211 // have weeded them all out 2212 // don't want to wrap a proxy inside a proxy 2213 ret[i] = new AWTEventListenerProxy(sael.getEventMask(), tempL); 2214 } 2215 return ret; 2216 } 2217 } 2218 2219 /** 2220 * Returns an array of all the <code>AWTEventListener</code>s 2221 * registered on this toolkit which listen to all of the event 2222 * types specified in the {@code eventMask} argument. 2223 * If there is a security manager, its {@code checkPermission} 2224 * method is called with an 2225 * {@code AWTPermission("listenToAllAWTEvents")} permission. 2226 * This may result in a SecurityException. 2227 * Listeners can be returned 2228 * within <code>AWTEventListenerProxy</code> objects, which also contain 2229 * the event mask for the given listener. 2230 * Note that listener objects 2231 * added multiple times appear only once in the returned array. 2232 * 2233 * @param eventMask the bitmask of event types to listen for 2234 * @return all of the <code>AWTEventListener</code>s registered 2235 * on this toolkit for the specified 2236 * event types, or an empty array if no such listeners 2237 * are currently registered 2238 * @throws SecurityException 2239 * if a security manager exists and its 2240 * <code>checkPermission</code> method doesn't allow the operation. 2241 * @see #addAWTEventListener 2242 * @see #removeAWTEventListener 2243 * @see SecurityManager#checkPermission 2244 * @see java.awt.AWTEvent 2245 * @see java.awt.AWTPermission 2246 * @see java.awt.event.AWTEventListener 2247 * @see java.awt.event.AWTEventListenerProxy 2248 * @since 1.4 2249 */ 2250 public AWTEventListener[] getAWTEventListeners(long eventMask) { 2251 SecurityManager security = System.getSecurityManager(); 2252 if (security != null) { 2253 security.checkPermission(SecurityConstants.AWT.ALL_AWT_EVENTS_PERMISSION); 2254 } 2255 synchronized (this) { 2256 EventListener[] la = ToolkitEventMulticaster.getListeners(eventListener,AWTEventListener.class); 2257 2258 java.util.List<AWTEventListenerProxy> list = new ArrayList<>(la.length); 2259 2260 for (int i = 0; i < la.length; i++) { 2261 SelectiveAWTEventListener sael = (SelectiveAWTEventListener)la[i]; 2262 if ((sael.getEventMask() & eventMask) == eventMask) { 2263 //AWTEventListener tempL = sael.getListener(); 2264 list.add(new AWTEventListenerProxy(sael.getEventMask(), 2265 sael.getListener())); 2266 } 2267 } 2268 return list.toArray(new AWTEventListener[0]); 2269 } 2270 } 2271 2272 /* 2273 * This method notifies any AWTEventListeners that an event 2274 * is about to be dispatched. 2275 * 2276 * @param theEvent the event which will be dispatched. 2277 */ 2278 void notifyAWTEventListeners(AWTEvent theEvent) { 2279 // This is a workaround for headless toolkits. It would be 2280 // better to override this method but it is declared package private. 2281 // "this instanceof" syntax defeats polymorphism. 2282 // --mm, 03/03/00 2283 if (this instanceof HeadlessToolkit) { 2284 ((HeadlessToolkit)this).getUnderlyingToolkit() 2285 .notifyAWTEventListeners(theEvent); 2286 return; 2287 } 2288 2289 AWTEventListener eventListener = this.eventListener; 2290 if (eventListener != null) { 2291 eventListener.eventDispatched(theEvent); 2292 } 2293 } 2294 2295 static private class ToolkitEventMulticaster extends AWTEventMulticaster 2296 implements AWTEventListener { 2297 // Implementation cloned from AWTEventMulticaster. 2298 2299 ToolkitEventMulticaster(AWTEventListener a, AWTEventListener b) { 2300 super(a, b); 2301 } 2302 2303 static AWTEventListener add(AWTEventListener a, 2304 AWTEventListener b) { 2305 if (a == null) return b; 2306 if (b == null) return a; 2307 return new ToolkitEventMulticaster(a, b); 2308 } 2309 2310 static AWTEventListener remove(AWTEventListener l, 2311 AWTEventListener oldl) { 2312 return (AWTEventListener) removeInternal(l, oldl); 2313 } 2314 2315 // #4178589: must overload remove(EventListener) to call our add() 2316 // instead of the static addInternal() so we allocate a 2317 // ToolkitEventMulticaster instead of an AWTEventMulticaster. 2318 // Note: this method is called by AWTEventListener.removeInternal(), 2319 // so its method signature must match AWTEventListener.remove(). 2320 protected EventListener remove(EventListener oldl) { 2321 if (oldl == a) return b; 2322 if (oldl == b) return a; 2323 AWTEventListener a2 = (AWTEventListener)removeInternal(a, oldl); 2324 AWTEventListener b2 = (AWTEventListener)removeInternal(b, oldl); 2325 if (a2 == a && b2 == b) { 2326 return this; // it's not here 2327 } 2328 return add(a2, b2); 2329 } 2330 2331 public void eventDispatched(AWTEvent event) { 2332 ((AWTEventListener)a).eventDispatched(event); 2333 ((AWTEventListener)b).eventDispatched(event); 2334 } 2335 } 2336 2337 private class SelectiveAWTEventListener implements AWTEventListener { 2338 AWTEventListener listener; 2339 private long eventMask; 2340 // This array contains the number of times to call the eventlistener 2341 // for each event type. 2342 int[] calls = new int[Toolkit.LONG_BITS]; 2343 2344 public AWTEventListener getListener() {return listener;} 2345 public long getEventMask() {return eventMask;} 2346 public int[] getCalls() {return calls;} 2347 2348 public void orEventMasks(long mask) { 2349 eventMask |= mask; 2350 // For each event bit set in mask, increment its call count. 2351 for (int i=0; i<Toolkit.LONG_BITS; i++) { 2352 // If no bits are set, break out of loop. 2353 if (mask == 0) { 2354 break; 2355 } 2356 if ((mask & 1L) != 0) { // Always test bit 0. 2357 calls[i]++; 2358 } 2359 mask >>>= 1; // Right shift, fill with zeros on left. 2360 } 2361 } 2362 2363 SelectiveAWTEventListener(AWTEventListener l, long mask) { 2364 listener = l; 2365 eventMask = mask; 2366 } 2367 2368 public void eventDispatched(AWTEvent event) { 2369 long eventBit = 0; // Used to save the bit of the event type. 2370 if (((eventBit = eventMask & AWTEvent.COMPONENT_EVENT_MASK) != 0 && 2371 event.id >= ComponentEvent.COMPONENT_FIRST && 2372 event.id <= ComponentEvent.COMPONENT_LAST) 2373 || ((eventBit = eventMask & AWTEvent.CONTAINER_EVENT_MASK) != 0 && 2374 event.id >= ContainerEvent.CONTAINER_FIRST && 2375 event.id <= ContainerEvent.CONTAINER_LAST) 2376 || ((eventBit = eventMask & AWTEvent.FOCUS_EVENT_MASK) != 0 && 2377 event.id >= FocusEvent.FOCUS_FIRST && 2378 event.id <= FocusEvent.FOCUS_LAST) 2379 || ((eventBit = eventMask & AWTEvent.KEY_EVENT_MASK) != 0 && 2380 event.id >= KeyEvent.KEY_FIRST && 2381 event.id <= KeyEvent.KEY_LAST) 2382 || ((eventBit = eventMask & AWTEvent.MOUSE_WHEEL_EVENT_MASK) != 0 && 2383 event.id == MouseEvent.MOUSE_WHEEL) 2384 || ((eventBit = eventMask & AWTEvent.MOUSE_MOTION_EVENT_MASK) != 0 && 2385 (event.id == MouseEvent.MOUSE_MOVED || 2386 event.id == MouseEvent.MOUSE_DRAGGED)) 2387 || ((eventBit = eventMask & AWTEvent.MOUSE_EVENT_MASK) != 0 && 2388 event.id != MouseEvent.MOUSE_MOVED && 2389 event.id != MouseEvent.MOUSE_DRAGGED && 2390 event.id != MouseEvent.MOUSE_WHEEL && 2391 event.id >= MouseEvent.MOUSE_FIRST && 2392 event.id <= MouseEvent.MOUSE_LAST) 2393 || ((eventBit = eventMask & AWTEvent.WINDOW_EVENT_MASK) != 0 && 2394 (event.id >= WindowEvent.WINDOW_FIRST && 2395 event.id <= WindowEvent.WINDOW_LAST)) 2396 || ((eventBit = eventMask & AWTEvent.ACTION_EVENT_MASK) != 0 && 2397 event.id >= ActionEvent.ACTION_FIRST && 2398 event.id <= ActionEvent.ACTION_LAST) 2399 || ((eventBit = eventMask & AWTEvent.ADJUSTMENT_EVENT_MASK) != 0 && 2400 event.id >= AdjustmentEvent.ADJUSTMENT_FIRST && 2401 event.id <= AdjustmentEvent.ADJUSTMENT_LAST) 2402 || ((eventBit = eventMask & AWTEvent.ITEM_EVENT_MASK) != 0 && 2403 event.id >= ItemEvent.ITEM_FIRST && 2404 event.id <= ItemEvent.ITEM_LAST) 2405 || ((eventBit = eventMask & AWTEvent.TEXT_EVENT_MASK) != 0 && 2406 event.id >= TextEvent.TEXT_FIRST && 2407 event.id <= TextEvent.TEXT_LAST) 2408 || ((eventBit = eventMask & AWTEvent.INPUT_METHOD_EVENT_MASK) != 0 && 2409 event.id >= InputMethodEvent.INPUT_METHOD_FIRST && 2410 event.id <= InputMethodEvent.INPUT_METHOD_LAST) 2411 || ((eventBit = eventMask & AWTEvent.PAINT_EVENT_MASK) != 0 && 2412 event.id >= PaintEvent.PAINT_FIRST && 2413 event.id <= PaintEvent.PAINT_LAST) 2414 || ((eventBit = eventMask & AWTEvent.INVOCATION_EVENT_MASK) != 0 && 2415 event.id >= InvocationEvent.INVOCATION_FIRST && 2416 event.id <= InvocationEvent.INVOCATION_LAST) 2417 || ((eventBit = eventMask & AWTEvent.HIERARCHY_EVENT_MASK) != 0 && 2418 event.id == HierarchyEvent.HIERARCHY_CHANGED) 2419 || ((eventBit = eventMask & AWTEvent.HIERARCHY_BOUNDS_EVENT_MASK) != 0 && 2420 (event.id == HierarchyEvent.ANCESTOR_MOVED || 2421 event.id == HierarchyEvent.ANCESTOR_RESIZED)) 2422 || ((eventBit = eventMask & AWTEvent.WINDOW_STATE_EVENT_MASK) != 0 && 2423 event.id == WindowEvent.WINDOW_STATE_CHANGED) 2424 || ((eventBit = eventMask & AWTEvent.WINDOW_FOCUS_EVENT_MASK) != 0 && 2425 (event.id == WindowEvent.WINDOW_GAINED_FOCUS || 2426 event.id == WindowEvent.WINDOW_LOST_FOCUS)) 2427 || ((eventBit = eventMask & sun.awt.SunToolkit.GRAB_EVENT_MASK) != 0 && 2428 (event instanceof sun.awt.UngrabEvent))) { 2429 // Get the index of the call count for this event type. 2430 // Instead of using Math.log(...) we will calculate it with 2431 // bit shifts. That's what previous implementation looked like: 2432 // 2433 // int ci = (int) (Math.log(eventBit)/Math.log(2)); 2434 int ci = 0; 2435 for (long eMask = eventBit; eMask != 0; eMask >>>= 1, ci++) { 2436 } 2437 ci--; 2438 // Call the listener as many times as it was added for this 2439 // event type. 2440 for (int i=0; i<calls[ci]; i++) { 2441 listener.eventDispatched(event); 2442 } 2443 } 2444 } 2445 } 2446 2447 /** 2448 * Returns a map of visual attributes for the abstract level description 2449 * of the given input method highlight, or null if no mapping is found. 2450 * The style field of the input method highlight is ignored. The map 2451 * returned is unmodifiable. 2452 * @param highlight input method highlight 2453 * @return style attribute map, or <code>null</code> 2454 * @exception HeadlessException if 2455 * <code>GraphicsEnvironment.isHeadless</code> returns true 2456 * @see java.awt.GraphicsEnvironment#isHeadless 2457 * @since 1.3 2458 */ 2459 public abstract Map<java.awt.font.TextAttribute,?> 2460 mapInputMethodHighlight(InputMethodHighlight highlight) 2461 throws HeadlessException; 2462 2463 private static PropertyChangeSupport createPropertyChangeSupport(Toolkit toolkit) { 2464 if (toolkit instanceof SunToolkit || toolkit instanceof HeadlessToolkit) { 2465 return new DesktopPropertyChangeSupport(toolkit); 2466 } else { 2467 return new PropertyChangeSupport(toolkit); 2468 } 2469 } 2470 2471 @SuppressWarnings("serial") 2472 private static class DesktopPropertyChangeSupport extends PropertyChangeSupport { 2473 2474 private static final StringBuilder PROP_CHANGE_SUPPORT_KEY = 2475 new StringBuilder("desktop property change support key"); 2476 private final Object source; 2477 2478 public DesktopPropertyChangeSupport(Object sourceBean) { 2479 super(sourceBean); 2480 source = sourceBean; 2481 } 2482 2483 @Override 2484 public synchronized void addPropertyChangeListener( 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 = new PropertyChangeSupport(source); 2492 AppContext.getAppContext().put(PROP_CHANGE_SUPPORT_KEY, pcs); 2493 } 2494 pcs.addPropertyChangeListener(propertyName, listener); 2495 } 2496 2497 @Override 2498 public synchronized void removePropertyChangeListener( 2499 String propertyName, 2500 PropertyChangeListener listener) 2501 { 2502 PropertyChangeSupport pcs = (PropertyChangeSupport) 2503 AppContext.getAppContext().get(PROP_CHANGE_SUPPORT_KEY); 2504 if (null != pcs) { 2505 pcs.removePropertyChangeListener(propertyName, listener); 2506 } 2507 } 2508 2509 @Override 2510 public synchronized PropertyChangeListener[] getPropertyChangeListeners() 2511 { 2512 PropertyChangeSupport pcs = (PropertyChangeSupport) 2513 AppContext.getAppContext().get(PROP_CHANGE_SUPPORT_KEY); 2514 if (null != pcs) { 2515 return pcs.getPropertyChangeListeners(); 2516 } else { 2517 return new PropertyChangeListener[0]; 2518 } 2519 } 2520 2521 @Override 2522 public synchronized PropertyChangeListener[] getPropertyChangeListeners(String propertyName) 2523 { 2524 PropertyChangeSupport pcs = (PropertyChangeSupport) 2525 AppContext.getAppContext().get(PROP_CHANGE_SUPPORT_KEY); 2526 if (null != pcs) { 2527 return pcs.getPropertyChangeListeners(propertyName); 2528 } else { 2529 return new PropertyChangeListener[0]; 2530 } 2531 } 2532 2533 @Override 2534 public synchronized void addPropertyChangeListener(PropertyChangeListener listener) { 2535 PropertyChangeSupport pcs = (PropertyChangeSupport) 2536 AppContext.getAppContext().get(PROP_CHANGE_SUPPORT_KEY); 2537 if (null == pcs) { 2538 pcs = new PropertyChangeSupport(source); 2539 AppContext.getAppContext().put(PROP_CHANGE_SUPPORT_KEY, pcs); 2540 } 2541 pcs.addPropertyChangeListener(listener); 2542 } 2543 2544 @Override 2545 public synchronized void removePropertyChangeListener(PropertyChangeListener listener) { 2546 PropertyChangeSupport pcs = (PropertyChangeSupport) 2547 AppContext.getAppContext().get(PROP_CHANGE_SUPPORT_KEY); 2548 if (null != pcs) { 2549 pcs.removePropertyChangeListener(listener); 2550 } 2551 } 2552 2553 /* 2554 * we do expect that all other fireXXX() methods of java.beans.PropertyChangeSupport 2555 * use this method. If this will be changed we will need to change this class. 2556 */ 2557 @Override 2558 public void firePropertyChange(final PropertyChangeEvent evt) { 2559 Object oldValue = evt.getOldValue(); 2560 Object newValue = evt.getNewValue(); 2561 String propertyName = evt.getPropertyName(); 2562 if (oldValue != null && newValue != null && oldValue.equals(newValue)) { 2563 return; 2564 } 2565 Runnable updater = new Runnable() { 2566 public void run() { 2567 PropertyChangeSupport pcs = (PropertyChangeSupport) 2568 AppContext.getAppContext().get(PROP_CHANGE_SUPPORT_KEY); 2569 if (null != pcs) { 2570 pcs.firePropertyChange(evt); 2571 } 2572 } 2573 }; 2574 final AppContext currentAppContext = AppContext.getAppContext(); 2575 for (AppContext appContext : AppContext.getAppContexts()) { 2576 if (null == appContext || appContext.isDisposed()) { 2577 continue; 2578 } 2579 if (currentAppContext == appContext) { 2580 updater.run(); 2581 } else { 2582 final PeerEvent e = new PeerEvent(source, updater, PeerEvent.ULTIMATE_PRIORITY_EVENT); 2583 SunToolkit.postEvent(appContext, e); 2584 } 2585 } 2586 } 2587 } 2588 2589 /** 2590 * Reports whether events from extra mouse buttons are allowed to be processed and posted into 2591 * {@code EventQueue}. 2592 * <br> 2593 * To change the returned value it is necessary to set the {@code sun.awt.enableExtraMouseButtons} 2594 * property before the {@code Toolkit} class initialization. This setting could be done on the application 2595 * startup by the following command: 2596 * <pre> 2597 * java -Dsun.awt.enableExtraMouseButtons=false Application 2598 * </pre> 2599 * Alternatively, the property could be set in the application by using the following code: 2600 * <pre> 2601 * System.setProperty("sun.awt.enableExtraMouseButtons", "true"); 2602 * </pre> 2603 * before the {@code Toolkit} class initialization. 2604 * If not set by the time of the {@code Toolkit} class initialization, this property will be 2605 * initialized with {@code true}. 2606 * Changing this value after the {@code Toolkit} class initialization will have no effect. 2607 * <p> 2608 * @exception HeadlessException if GraphicsEnvironment.isHeadless() returns true 2609 * @return {@code true} if events from extra mouse buttons are allowed to be processed and posted; 2610 * {@code false} otherwise 2611 * @see System#getProperty(String propertyName) 2612 * @see System#setProperty(String propertyName, String value) 2613 * @see java.awt.EventQueue 2614 * @since 1.7 2615 */ 2616 public boolean areExtraMouseButtonsEnabled() throws HeadlessException { 2617 GraphicsEnvironment.checkHeadless(); 2618 2619 return Toolkit.getDefaultToolkit().areExtraMouseButtonsEnabled(); 2620 } 2621 }