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.security.util.SecurityConstants; 60 61 import sun.util.CoreResourceBundleControl; 62 63 /** 64 * This class is the abstract superclass of all actual 65 * implementations of the Abstract Window Toolkit. Subclasses of 66 * the <code>Toolkit</code> class are used to bind the various components 67 * to particular native toolkit implementations. 68 * <p> 69 * Many GUI events may be delivered to user 70 * asynchronously, if the opposite is not specified explicitly. 71 * As well as 72 * many GUI operations may be performed asynchronously. 73 * This fact means that if the state of a component is set, and then 74 * the state immediately queried, the returned value may not yet 75 * reflect the requested change. This behavior includes, but is not 76 * limited to: 77 * <ul> 78 * <li>Scrolling to a specified position. 79 * <br>For example, calling <code>ScrollPane.setScrollPosition</code> 80 * and then <code>getScrollPosition</code> may return an incorrect 81 * value if the original request has not yet been processed. 82 * <p> 83 * <li>Moving the focus from one component to another. 84 * <br>For more information, see 85 * <a href="http://java.sun.com/docs/books/tutorial/uiswing/misc/focus.html#transferTiming">Timing 86 * Focus Transfers</a>, a section in 87 * <a href="http://java.sun.com/docs/books/tutorial/uiswing/">The Swing 88 * Tutorial</a>. 89 * <p> 90 * <li>Making a top-level container visible. 91 * <br>Calling <code>setVisible(true)</code> on a <code>Window</code>, 92 * <code>Frame</code> or <code>Dialog</code> may occur 93 * asynchronously. 94 * <p> 95 * <li>Setting the size or location of a top-level container. 96 * <br>Calls to <code>setSize</code>, <code>setBounds</code> or 97 * <code>setLocation</code> on a <code>Window</code>, 98 * <code>Frame</code> or <code>Dialog</code> are forwarded 99 * to the underlying window management system and may be 100 * ignored or modified. See {@link java.awt.Window} for 101 * more information. 102 * </ul> 103 * <p> 104 * Most applications should not call any of the methods in this 105 * class directly. The methods defined by <code>Toolkit</code> are 106 * the "glue" that joins the platform-independent classes in the 107 * <code>java.awt</code> package with their counterparts in 108 * <code>java.awt.peer</code>. Some methods defined by 109 * <code>Toolkit</code> query the native operating system directly. 110 * 111 * @author Sami Shaio 112 * @author Arthur van Hoff 113 * @author Fred Ecks 114 * @since JDK1.0 115 */ 116 public abstract class Toolkit { 117 118 /** 119 * Creates this toolkit's implementation of the <code>Desktop</code> 120 * using the specified peer interface. 121 * @param target the desktop to be implemented 122 * @return this toolkit's implementation of the <code>Desktop</code> 123 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 124 * returns true 125 * @see java.awt.GraphicsEnvironment#isHeadless 126 * @see java.awt.Desktop 127 * @see java.awt.peer.DesktopPeer 128 * @since 1.6 129 */ 130 protected abstract DesktopPeer createDesktopPeer(Desktop target) 131 throws HeadlessException; 132 133 134 /** 135 * Creates this toolkit's implementation of <code>Button</code> using 136 * the specified peer interface. 137 * @param target the button to be implemented. 138 * @return this toolkit's implementation of <code>Button</code>. 139 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 140 * returns true 141 * @see java.awt.GraphicsEnvironment#isHeadless 142 * @see java.awt.Button 143 * @see java.awt.peer.ButtonPeer 144 */ 145 protected abstract ButtonPeer createButton(Button target) 146 throws HeadlessException; 147 148 /** 149 * Creates this toolkit's implementation of <code>TextField</code> using 150 * the specified peer interface. 151 * @param target the text field to be implemented. 152 * @return this toolkit's implementation of <code>TextField</code>. 153 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 154 * returns true 155 * @see java.awt.GraphicsEnvironment#isHeadless 156 * @see java.awt.TextField 157 * @see java.awt.peer.TextFieldPeer 158 */ 159 protected abstract TextFieldPeer createTextField(TextField target) 160 throws HeadlessException; 161 162 /** 163 * Creates this toolkit's implementation of <code>Label</code> using 164 * the specified peer interface. 165 * @param target the label to be implemented. 166 * @return this toolkit's implementation of <code>Label</code>. 167 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 168 * returns true 169 * @see java.awt.GraphicsEnvironment#isHeadless 170 * @see java.awt.Label 171 * @see java.awt.peer.LabelPeer 172 */ 173 protected abstract LabelPeer createLabel(Label target) 174 throws HeadlessException; 175 176 /** 177 * Creates this toolkit's implementation of <code>List</code> using 178 * the specified peer interface. 179 * @param target the list to be implemented. 180 * @return this toolkit's implementation of <code>List</code>. 181 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 182 * returns true 183 * @see java.awt.GraphicsEnvironment#isHeadless 184 * @see java.awt.List 185 * @see java.awt.peer.ListPeer 186 */ 187 protected abstract ListPeer createList(java.awt.List target) 188 throws HeadlessException; 189 190 /** 191 * Creates this toolkit's implementation of <code>Checkbox</code> using 192 * the specified peer interface. 193 * @param target the check box to be implemented. 194 * @return this toolkit's implementation of <code>Checkbox</code>. 195 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 196 * returns true 197 * @see java.awt.GraphicsEnvironment#isHeadless 198 * @see java.awt.Checkbox 199 * @see java.awt.peer.CheckboxPeer 200 */ 201 protected abstract CheckboxPeer createCheckbox(Checkbox target) 202 throws HeadlessException; 203 204 /** 205 * Creates this toolkit's implementation of <code>Scrollbar</code> using 206 * the specified peer interface. 207 * @param target the scroll bar to be implemented. 208 * @return this toolkit's implementation of <code>Scrollbar</code>. 209 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 210 * returns true 211 * @see java.awt.GraphicsEnvironment#isHeadless 212 * @see java.awt.Scrollbar 213 * @see java.awt.peer.ScrollbarPeer 214 */ 215 protected abstract ScrollbarPeer createScrollbar(Scrollbar target) 216 throws HeadlessException; 217 218 /** 219 * Creates this toolkit's implementation of <code>ScrollPane</code> using 220 * the specified peer interface. 221 * @param target the scroll pane to be implemented. 222 * @return this toolkit's implementation of <code>ScrollPane</code>. 223 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 224 * returns true 225 * @see java.awt.GraphicsEnvironment#isHeadless 226 * @see java.awt.ScrollPane 227 * @see java.awt.peer.ScrollPanePeer 228 * @since JDK1.1 229 */ 230 protected abstract ScrollPanePeer createScrollPane(ScrollPane target) 231 throws HeadlessException; 232 233 /** 234 * Creates this toolkit's implementation of <code>TextArea</code> using 235 * the specified peer interface. 236 * @param target the text area to be implemented. 237 * @return this toolkit's implementation of <code>TextArea</code>. 238 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 239 * returns true 240 * @see java.awt.GraphicsEnvironment#isHeadless 241 * @see java.awt.TextArea 242 * @see java.awt.peer.TextAreaPeer 243 */ 244 protected abstract TextAreaPeer createTextArea(TextArea target) 245 throws HeadlessException; 246 247 /** 248 * Creates this toolkit's implementation of <code>Choice</code> using 249 * the specified peer interface. 250 * @param target the choice to be implemented. 251 * @return this toolkit's implementation of <code>Choice</code>. 252 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 253 * returns true 254 * @see java.awt.GraphicsEnvironment#isHeadless 255 * @see java.awt.Choice 256 * @see java.awt.peer.ChoicePeer 257 */ 258 protected abstract ChoicePeer createChoice(Choice target) 259 throws HeadlessException; 260 261 /** 262 * Creates this toolkit's implementation of <code>Frame</code> using 263 * the specified peer interface. 264 * @param target the frame to be implemented. 265 * @return this toolkit's implementation of <code>Frame</code>. 266 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 267 * returns true 268 * @see java.awt.GraphicsEnvironment#isHeadless 269 * @see java.awt.Frame 270 * @see java.awt.peer.FramePeer 271 */ 272 protected abstract FramePeer createFrame(Frame target) 273 throws HeadlessException; 274 275 /** 276 * Creates this toolkit's implementation of <code>Canvas</code> using 277 * the specified peer interface. 278 * @param target the canvas to be implemented. 279 * @return this toolkit's implementation of <code>Canvas</code>. 280 * @see java.awt.Canvas 281 * @see java.awt.peer.CanvasPeer 282 */ 283 protected abstract CanvasPeer createCanvas(Canvas target); 284 285 /** 286 * Creates this toolkit's implementation of <code>Panel</code> using 287 * the specified peer interface. 288 * @param target the panel to be implemented. 289 * @return this toolkit's implementation of <code>Panel</code>. 290 * @see java.awt.Panel 291 * @see java.awt.peer.PanelPeer 292 */ 293 protected abstract PanelPeer createPanel(Panel target); 294 295 /** 296 * Creates this toolkit's implementation of <code>Window</code> using 297 * the specified peer interface. 298 * @param target the window to be implemented. 299 * @return this toolkit's implementation of <code>Window</code>. 300 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 301 * returns true 302 * @see java.awt.GraphicsEnvironment#isHeadless 303 * @see java.awt.Window 304 * @see java.awt.peer.WindowPeer 305 */ 306 protected abstract WindowPeer createWindow(Window target) 307 throws HeadlessException; 308 309 /** 310 * Creates this toolkit's implementation of <code>Dialog</code> using 311 * the specified peer interface. 312 * @param target the dialog to be implemented. 313 * @return this toolkit's implementation of <code>Dialog</code>. 314 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 315 * returns true 316 * @see java.awt.GraphicsEnvironment#isHeadless 317 * @see java.awt.Dialog 318 * @see java.awt.peer.DialogPeer 319 */ 320 protected abstract DialogPeer createDialog(Dialog target) 321 throws HeadlessException; 322 323 /** 324 * Creates this toolkit's implementation of <code>MenuBar</code> using 325 * the specified peer interface. 326 * @param target the menu bar to be implemented. 327 * @return this toolkit's implementation of <code>MenuBar</code>. 328 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 329 * returns true 330 * @see java.awt.GraphicsEnvironment#isHeadless 331 * @see java.awt.MenuBar 332 * @see java.awt.peer.MenuBarPeer 333 */ 334 protected abstract MenuBarPeer createMenuBar(MenuBar target) 335 throws HeadlessException; 336 337 /** 338 * Creates this toolkit's implementation of <code>Menu</code> using 339 * the specified peer interface. 340 * @param target the menu to be implemented. 341 * @return this toolkit's implementation of <code>Menu</code>. 342 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 343 * returns true 344 * @see java.awt.GraphicsEnvironment#isHeadless 345 * @see java.awt.Menu 346 * @see java.awt.peer.MenuPeer 347 */ 348 protected abstract MenuPeer createMenu(Menu target) 349 throws HeadlessException; 350 351 /** 352 * Creates this toolkit's implementation of <code>PopupMenu</code> using 353 * the specified peer interface. 354 * @param target the popup menu to be implemented. 355 * @return this toolkit's implementation of <code>PopupMenu</code>. 356 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 357 * returns true 358 * @see java.awt.GraphicsEnvironment#isHeadless 359 * @see java.awt.PopupMenu 360 * @see java.awt.peer.PopupMenuPeer 361 * @since JDK1.1 362 */ 363 protected abstract PopupMenuPeer createPopupMenu(PopupMenu target) 364 throws HeadlessException; 365 366 /** 367 * Creates this toolkit's implementation of <code>MenuItem</code> using 368 * the specified peer interface. 369 * @param target the menu item to be implemented. 370 * @return this toolkit's implementation of <code>MenuItem</code>. 371 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 372 * returns true 373 * @see java.awt.GraphicsEnvironment#isHeadless 374 * @see java.awt.MenuItem 375 * @see java.awt.peer.MenuItemPeer 376 */ 377 protected abstract MenuItemPeer createMenuItem(MenuItem target) 378 throws HeadlessException; 379 380 /** 381 * Creates this toolkit's implementation of <code>FileDialog</code> using 382 * the specified peer interface. 383 * @param target the file dialog to be implemented. 384 * @return this toolkit's implementation of <code>FileDialog</code>. 385 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 386 * returns true 387 * @see java.awt.GraphicsEnvironment#isHeadless 388 * @see java.awt.FileDialog 389 * @see java.awt.peer.FileDialogPeer 390 */ 391 protected abstract FileDialogPeer createFileDialog(FileDialog target) 392 throws HeadlessException; 393 394 /** 395 * Creates this toolkit's implementation of <code>CheckboxMenuItem</code> using 396 * the specified peer interface. 397 * @param target the checkbox menu item to be implemented. 398 * @return this toolkit's implementation of <code>CheckboxMenuItem</code>. 399 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 400 * returns true 401 * @see java.awt.GraphicsEnvironment#isHeadless 402 * @see java.awt.CheckboxMenuItem 403 * @see java.awt.peer.CheckboxMenuItemPeer 404 */ 405 protected abstract CheckboxMenuItemPeer createCheckboxMenuItem( 406 CheckboxMenuItem target) throws HeadlessException; 407 408 /** 409 * Obtains this toolkit's implementation of helper class for 410 * <code>MouseInfo</code> operations. 411 * @return this toolkit's implementation of helper for <code>MouseInfo</code> 412 * @throws UnsupportedOperationException if this operation is not implemented 413 * @see java.awt.peer.MouseInfoPeer 414 * @see java.awt.MouseInfo 415 * @since 1.5 416 */ 417 protected MouseInfoPeer getMouseInfoPeer() { 418 throw new UnsupportedOperationException("Not implemented"); 419 } 420 421 private static LightweightPeer lightweightMarker; 422 423 /** 424 * Creates a peer for a component or container. This peer is windowless 425 * and allows the Component and Container classes to be extended directly 426 * to create windowless components that are defined entirely in java. 427 * 428 * @param target The Component to be created. 429 */ 430 protected LightweightPeer createComponent(Component target) { 431 if (lightweightMarker == null) { 432 lightweightMarker = new NullComponentPeer(); 433 } 434 return lightweightMarker; 435 } 436 437 /** 438 * Creates this toolkit's implementation of <code>Font</code> using 439 * the specified peer interface. 440 * @param name the font to be implemented 441 * @param style the style of the font, such as <code>PLAIN</code>, 442 * <code>BOLD</code>, <code>ITALIC</code>, or a combination 443 * @return this toolkit's implementation of <code>Font</code> 444 * @see java.awt.Font 445 * @see java.awt.peer.FontPeer 446 * @see java.awt.GraphicsEnvironment#getAllFonts 447 * @deprecated see java.awt.GraphicsEnvironment#getAllFonts 448 */ 449 @Deprecated 450 protected abstract FontPeer getFontPeer(String name, int style); 451 452 // The following method is called by the private method 453 // <code>updateSystemColors</code> in <code>SystemColor</code>. 454 455 /** 456 * Fills in the integer array that is supplied as an argument 457 * with the current system color values. 458 * 459 * @param systemColors an integer array. 460 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 461 * returns true 462 * @see java.awt.GraphicsEnvironment#isHeadless 463 * @since JDK1.1 464 */ 465 protected void loadSystemColors(int[] systemColors) 466 throws HeadlessException { 467 GraphicsEnvironment.checkHeadless(); 468 } 469 470 /** 471 * Controls whether the layout of Containers is validated dynamically 472 * during resizing, or statically, after resizing is complete. 473 * Use {@code isDynamicLayoutActive()} to detect if this feature enabled 474 * in this program and is supported by this operating system 475 * and/or window manager. 476 * Note that this feature is supported not on all platforms, and 477 * conversely, that this feature cannot be turned off on some platforms. 478 * On these platforms where dynamic layout during resizing is not supported 479 * (or is always supported), setting this property has no effect. 480 * Note that this feature can be set or unset as a property of the 481 * operating system or window manager on some platforms. On such 482 * platforms, the dynamic resize property must be set at the operating 483 * system or window manager level before this method can take effect. 484 * This method does not change support or settings of the underlying 485 * operating system or 486 * window manager. The OS/WM support can be 487 * queried using getDesktopProperty("awt.dynamicLayoutSupported") method. 488 * 489 * @param dynamic If true, Containers should re-layout their 490 * components as the Container is being resized. If false, 491 * the layout will be validated after resizing is completed. 492 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 493 * returns true 494 * @see #isDynamicLayoutSet() 495 * @see #isDynamicLayoutActive() 496 * @see #getDesktopProperty(String propertyName) 497 * @see java.awt.GraphicsEnvironment#isHeadless 498 * @since 1.4 499 */ 500 public void setDynamicLayout(final boolean dynamic) 501 throws HeadlessException { 502 GraphicsEnvironment.checkHeadless(); 503 if (this != getDefaultToolkit()) { 504 getDefaultToolkit().setDynamicLayout(dynamic); 505 } 506 } 507 508 /** 509 * Returns whether the layout of Containers is validated dynamically 510 * during resizing, or statically, after resizing is complete. 511 * Note: this method returns the value that was set programmatically; 512 * it does not reflect support at the level of the operating system 513 * or window manager for dynamic layout on resizing, or the current 514 * operating system or window manager settings. The OS/WM support can 515 * be queried using getDesktopProperty("awt.dynamicLayoutSupported"). 516 * 517 * @return true if validation of Containers is done dynamically, 518 * false if validation is done after resizing is finished. 519 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 520 * returns true 521 * @see #setDynamicLayout(boolean dynamic) 522 * @see #isDynamicLayoutActive() 523 * @see #getDesktopProperty(String propertyName) 524 * @see java.awt.GraphicsEnvironment#isHeadless 525 * @since 1.4 526 */ 527 protected boolean isDynamicLayoutSet() 528 throws HeadlessException { 529 GraphicsEnvironment.checkHeadless(); 530 531 if (this != Toolkit.getDefaultToolkit()) { 532 return Toolkit.getDefaultToolkit().isDynamicLayoutSet(); 533 } else { 534 return false; 535 } 536 } 537 538 /** 539 * Returns whether dynamic layout of Containers on resize is 540 * currently active (both set in program 541 *( {@code isDynamicLayoutSet()} ) 542 *, and supported 543 * by the underlying operating system and/or window manager). 544 * If dynamic layout is currently inactive then Containers 545 * re-layout their components when resizing is completed. As a result 546 * the {@code Component.validate()} method will be invoked only 547 * once per resize. 548 * If dynamic layout is currently active then Containers 549 * re-layout their components on every native resize event and 550 * the {@code validate()} method will be invoked each time. 551 * The OS/WM support can be queried using 552 * the getDesktopProperty("awt.dynamicLayoutSupported") method. 553 * 554 * @return true if dynamic layout of Containers on resize is 555 * currently active, false otherwise. 556 * @exception HeadlessException if the GraphicsEnvironment.isHeadless() 557 * method returns true 558 * @see #setDynamicLayout(boolean dynamic) 559 * @see #isDynamicLayoutSet() 560 * @see #getDesktopProperty(String propertyName) 561 * @see java.awt.GraphicsEnvironment#isHeadless 562 * @since 1.4 563 */ 564 public boolean isDynamicLayoutActive() 565 throws HeadlessException { 566 GraphicsEnvironment.checkHeadless(); 567 568 if (this != Toolkit.getDefaultToolkit()) { 569 return Toolkit.getDefaultToolkit().isDynamicLayoutActive(); 570 } else { 571 return false; 572 } 573 } 574 575 /** 576 * Gets the size of the screen. On systems with multiple displays, the 577 * primary display is used. Multi-screen aware display dimensions are 578 * available from <code>GraphicsConfiguration</code> and 579 * <code>GraphicsDevice</code>. 580 * @return the size of this toolkit's screen, in pixels. 581 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 582 * returns true 583 * @see java.awt.GraphicsConfiguration#getBounds 584 * @see java.awt.GraphicsDevice#getDisplayMode 585 * @see java.awt.GraphicsEnvironment#isHeadless 586 */ 587 public abstract Dimension getScreenSize() 588 throws HeadlessException; 589 590 /** 591 * Returns the screen resolution in dots-per-inch. 592 * @return this toolkit's screen resolution, in dots-per-inch. 593 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 594 * returns true 595 * @see java.awt.GraphicsEnvironment#isHeadless 596 */ 597 public abstract int getScreenResolution() 598 throws HeadlessException; 599 600 /** 601 * Gets the insets of the screen. 602 * @param gc a <code>GraphicsConfiguration</code> 603 * @return the insets of this toolkit's screen, in pixels. 604 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 605 * returns true 606 * @see java.awt.GraphicsEnvironment#isHeadless 607 * @since 1.4 608 */ 609 public Insets getScreenInsets(GraphicsConfiguration gc) 610 throws HeadlessException { 611 GraphicsEnvironment.checkHeadless(); 612 if (this != Toolkit.getDefaultToolkit()) { 613 return Toolkit.getDefaultToolkit().getScreenInsets(gc); 614 } else { 615 return new Insets(0, 0, 0, 0); 616 } 617 } 618 619 /** 620 * Determines the color model of this toolkit's screen. 621 * <p> 622 * <code>ColorModel</code> is an abstract class that 623 * encapsulates the ability to translate between the 624 * pixel values of an image and its red, green, blue, 625 * and alpha components. 626 * <p> 627 * This toolkit method is called by the 628 * <code>getColorModel</code> method 629 * of the <code>Component</code> class. 630 * @return the color model of this toolkit's screen. 631 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 632 * returns true 633 * @see java.awt.GraphicsEnvironment#isHeadless 634 * @see java.awt.image.ColorModel 635 * @see java.awt.Component#getColorModel 636 */ 637 public abstract ColorModel getColorModel() 638 throws HeadlessException; 639 640 /** 641 * Returns the names of the available fonts in this toolkit.<p> 642 * For 1.1, the following font names are deprecated (the replacement 643 * name follows): 644 * <ul> 645 * <li>TimesRoman (use Serif) 646 * <li>Helvetica (use SansSerif) 647 * <li>Courier (use Monospaced) 648 * </ul><p> 649 * The ZapfDingbats fontname is also deprecated in 1.1 but the characters 650 * are defined in Unicode starting at 0x2700, and as of 1.1 Java supports 651 * those characters. 652 * @return the names of the available fonts in this toolkit. 653 * @deprecated see {@link java.awt.GraphicsEnvironment#getAvailableFontFamilyNames()} 654 * @see java.awt.GraphicsEnvironment#getAvailableFontFamilyNames() 655 */ 656 @Deprecated 657 public abstract String[] getFontList(); 658 659 /** 660 * Gets the screen device metrics for rendering of the font. 661 * @param font a font 662 * @return the screen metrics of the specified font in this toolkit 663 * @deprecated As of JDK version 1.2, replaced by the <code>Font</code> 664 * method <code>getLineMetrics</code>. 665 * @see java.awt.font.LineMetrics 666 * @see java.awt.Font#getLineMetrics 667 * @see java.awt.GraphicsEnvironment#getScreenDevices 668 */ 669 @Deprecated 670 public abstract FontMetrics getFontMetrics(Font font); 671 672 /** 673 * Synchronizes this toolkit's graphics state. Some window systems 674 * may do buffering of graphics events. 675 * <p> 676 * This method ensures that the display is up-to-date. It is useful 677 * for animation. 678 */ 679 public abstract void sync(); 680 681 /** 682 * The default toolkit. 683 */ 684 private static Toolkit toolkit; 685 686 /** 687 * Used internally by the assistive technologies functions; set at 688 * init time and used at load time 689 */ 690 private static String atNames; 691 692 /** 693 * Initializes properties related to assistive technologies. 694 * These properties are used both in the loadAssistiveProperties() 695 * function below, as well as other classes in the jdk that depend 696 * on the properties (such as the use of the screen_magnifier_present 697 * property in Java2D hardware acceleration initialization). The 698 * initialization of the properties must be done before the platform- 699 * specific Toolkit class is instantiated so that all necessary 700 * properties are set up properly before any classes dependent upon them 701 * are initialized. 702 */ 703 private static void initAssistiveTechnologies() { 704 705 // Get accessibility properties 706 final String sep = File.separator; 707 final Properties properties = new Properties(); 708 709 710 atNames = java.security.AccessController.doPrivileged( 711 new java.security.PrivilegedAction<String>() { 712 public String run() { 713 714 // Try loading the per-user accessibility properties file. 715 try { 716 File propsFile = new File( 717 System.getProperty("user.home") + 718 sep + ".accessibility.properties"); 719 FileInputStream in = 720 new FileInputStream(propsFile); 721 722 // Inputstream has been buffered in Properties class 723 properties.load(in); 724 in.close(); 725 } catch (Exception e) { 726 // Per-user accessibility properties file does not exist 727 } 728 729 // Try loading the system-wide accessibility properties 730 // file only if a per-user accessibility properties 731 // file does not exist or is empty. 732 if (properties.size() == 0) { 733 try { 734 File propsFile = new File( 735 System.getProperty("java.home") + sep + "lib" + 736 sep + "accessibility.properties"); 737 FileInputStream in = 738 new FileInputStream(propsFile); 739 740 // Inputstream has been buffered in Properties class 741 properties.load(in); 742 in.close(); 743 } catch (Exception e) { 744 // System-wide accessibility properties file does 745 // not exist; 746 } 747 } 748 749 // Get whether a screen magnifier is present. First check 750 // the system property and then check the properties file. 751 String magPresent = System.getProperty("javax.accessibility.screen_magnifier_present"); 752 if (magPresent == null) { 753 magPresent = properties.getProperty("screen_magnifier_present", null); 754 if (magPresent != null) { 755 System.setProperty("javax.accessibility.screen_magnifier_present", magPresent); 756 } 757 } 758 759 // Get the names of any assistive technolgies to load. First 760 // check the system property and then check the properties 761 // file. 762 String classNames = System.getProperty("javax.accessibility.assistive_technologies"); 763 if (classNames == null) { 764 classNames = properties.getProperty("assistive_technologies", null); 765 if (classNames != null) { 766 System.setProperty("javax.accessibility.assistive_technologies", classNames); 767 } 768 } 769 return classNames; 770 } 771 }); 772 } 773 774 /** 775 * Loads additional classes into the VM, using the property 776 * 'assistive_technologies' specified in the Sun reference 777 * implementation by a line in the 'accessibility.properties' 778 * file. The form is "assistive_technologies=..." where 779 * the "..." is a comma-separated list of assistive technology 780 * classes to load. Each class is loaded in the order given 781 * and a single instance of each is created using 782 * Class.forName(class).newInstance(). All errors are handled 783 * via an AWTError exception. 784 * 785 * <p>The assumption is made that assistive technology classes are supplied 786 * as part of INSTALLED (as opposed to: BUNDLED) extensions or specified 787 * on the class path 788 * (and therefore can be loaded using the class loader returned by 789 * a call to <code>ClassLoader.getSystemClassLoader</code>, whose 790 * delegation parent is the extension class loader for installed 791 * extensions). 792 */ 793 private static void loadAssistiveTechnologies() { 794 // Load any assistive technologies 795 if (atNames != null) { 796 ClassLoader cl = ClassLoader.getSystemClassLoader(); 797 StringTokenizer parser = new StringTokenizer(atNames," ,"); 798 String atName; 799 while (parser.hasMoreTokens()) { 800 atName = parser.nextToken(); 801 try { 802 Class<?> clazz; 803 if (cl != null) { 804 clazz = cl.loadClass(atName); 805 } else { 806 clazz = Class.forName(atName); 807 } 808 clazz.newInstance(); 809 } catch (ClassNotFoundException e) { 810 throw new AWTError("Assistive Technology not found: " 811 + atName); 812 } catch (InstantiationException e) { 813 throw new AWTError("Could not instantiate Assistive" 814 + " Technology: " + atName); 815 } catch (IllegalAccessException e) { 816 throw new AWTError("Could not access Assistive" 817 + " Technology: " + atName); 818 } catch (Exception e) { 819 throw new AWTError("Error trying to install Assistive" 820 + " Technology: " + atName + " " + e); 821 } 822 } 823 } 824 } 825 826 /** 827 * Gets the default toolkit. 828 * <p> 829 * If a system property named <code>"java.awt.headless"</code> is set 830 * to <code>true</code> then the headless implementation 831 * of <code>Toolkit</code> is used. 832 * <p> 833 * If there is no <code>"java.awt.headless"</code> or it is set to 834 * <code>false</code> and there is a system property named 835 * <code>"awt.toolkit"</code>, 836 * that property is treated as the name of a class that is a subclass 837 * of <code>Toolkit</code>; 838 * otherwise the default platform-specific implementation of 839 * <code>Toolkit</code> is used. 840 * <p> 841 * Also loads additional classes into the VM, using the property 842 * 'assistive_technologies' specified in the Sun reference 843 * implementation by a line in the 'accessibility.properties' 844 * file. The form is "assistive_technologies=..." where 845 * the "..." is a comma-separated list of assistive technology 846 * classes to load. Each class is loaded in the order given 847 * and a single instance of each is created using 848 * Class.forName(class).newInstance(). This is done just after 849 * the AWT toolkit is created. All errors are handled via an 850 * AWTError exception. 851 * @return the default toolkit. 852 * @exception AWTError if a toolkit could not be found, or 853 * if one could not be accessed or instantiated. 854 */ 855 public static synchronized Toolkit getDefaultToolkit() { 856 if (toolkit == null) { 857 try { 858 // We disable the JIT during toolkit initialization. This 859 // tends to touch lots of classes that aren't needed again 860 // later and therefore JITing is counter-productiive. 861 java.lang.Compiler.disable(); 862 863 java.security.AccessController.doPrivileged( 864 new java.security.PrivilegedAction<Void>() { 865 public Void run() { 866 String nm = null; 867 Class<?> cls = null; 868 try { 869 nm = System.getProperty("awt.toolkit"); 870 try { 871 cls = Class.forName(nm); 872 } catch (ClassNotFoundException e) { 873 ClassLoader cl = ClassLoader.getSystemClassLoader(); 874 if (cl != null) { 875 try { 876 cls = cl.loadClass(nm); 877 } catch (ClassNotFoundException ee) { 878 throw new AWTError("Toolkit not found: " + nm); 879 } 880 } 881 } 882 if (cls != null) { 883 toolkit = (Toolkit)cls.newInstance(); 884 if (GraphicsEnvironment.isHeadless()) { 885 toolkit = new HeadlessToolkit(toolkit); 886 } 887 } 888 } catch (InstantiationException e) { 889 throw new AWTError("Could not instantiate Toolkit: " + nm); 890 } catch (IllegalAccessException e) { 891 throw new AWTError("Could not access Toolkit: " + nm); 892 } 893 return null; 894 } 895 }); 896 loadAssistiveTechnologies(); 897 } finally { 898 // Make sure to always re-enable the JIT. 899 java.lang.Compiler.enable(); 900 } 901 } 902 return toolkit; 903 } 904 905 /** 906 * Returns an image which gets pixel data from the specified file, 907 * whose format can be either GIF, JPEG or PNG. 908 * The underlying toolkit attempts to resolve multiple requests 909 * with the same filename to the same returned Image. 910 * <p> 911 * Since the mechanism required to facilitate this sharing of 912 * <code>Image</code> objects may continue to hold onto images 913 * that are no longer in use for an indefinite period of time, 914 * developers are encouraged to implement their own caching of 915 * images by using the {@link #createImage(java.lang.String) createImage} 916 * variant wherever available. 917 * If the image data contained in the specified file changes, 918 * the <code>Image</code> object returned from this method may 919 * still contain stale information which was loaded from the 920 * file after a prior call. 921 * Previously loaded image data can be manually discarded by 922 * calling the {@link Image#flush flush} method on the 923 * returned <code>Image</code>. 924 * <p> 925 * This method first checks if there is a security manager installed. 926 * If so, the method calls the security manager's 927 * <code>checkRead</code> method with the file specified to ensure 928 * that the access to the image is allowed. 929 * @param filename the name of a file containing pixel data 930 * in a recognized file format. 931 * @return an image which gets its pixel data from 932 * the specified file. 933 * @throws SecurityException if a security manager exists and its 934 * checkRead method doesn't allow the operation. 935 * @see #createImage(java.lang.String) 936 */ 937 public abstract Image getImage(String filename); 938 939 /** 940 * Returns an image which gets pixel data from the specified URL. 941 * The pixel data referenced by the specified URL must be in one 942 * of the following formats: GIF, JPEG or PNG. 943 * The underlying toolkit attempts to resolve multiple requests 944 * with the same URL to the same returned Image. 945 * <p> 946 * Since the mechanism required to facilitate this sharing of 947 * <code>Image</code> objects may continue to hold onto images 948 * that are no longer in use for an indefinite period of time, 949 * developers are encouraged to implement their own caching of 950 * images by using the {@link #createImage(java.net.URL) createImage} 951 * variant wherever available. 952 * If the image data stored at the specified URL changes, 953 * the <code>Image</code> object returned from this method may 954 * still contain stale information which was fetched from the 955 * URL after a prior call. 956 * Previously loaded image data can be manually discarded by 957 * calling the {@link Image#flush flush} method on the 958 * returned <code>Image</code>. 959 * <p> 960 * This method first checks if there is a security manager installed. 961 * If so, the method calls the security manager's 962 * <code>checkPermission</code> method with the 963 * url.openConnection().getPermission() permission to ensure 964 * that the access to the image is allowed. For compatibility 965 * with pre-1.2 security managers, if the access is denied with 966 * <code>FilePermission</code> or <code>SocketPermission</code>, 967 * the method throws the <code>SecurityException</code> 968 * if the corresponding 1.1-style SecurityManager.checkXXX method 969 * also denies permission. 970 * @param url the URL to use in fetching the pixel data. 971 * @return an image which gets its pixel data from 972 * the specified URL. 973 * @throws SecurityException if a security manager exists and its 974 * checkPermission method doesn't allow 975 * the operation. 976 * @see #createImage(java.net.URL) 977 */ 978 public abstract Image getImage(URL url); 979 980 /** 981 * Returns an image which gets pixel data from the specified file. 982 * The returned Image is a new object which will not be shared 983 * with any other caller of this method or its getImage variant. 984 * <p> 985 * This method first checks if there is a security manager installed. 986 * If so, the method calls the security manager's 987 * <code>checkRead</code> method with the specified file to ensure 988 * that the image creation is allowed. 989 * @param filename the name of a file containing pixel data 990 * in a recognized file format. 991 * @return an image which gets its pixel data from 992 * the specified file. 993 * @throws SecurityException if a security manager exists and its 994 * checkRead method doesn't allow the operation. 995 * @see #getImage(java.lang.String) 996 */ 997 public abstract Image createImage(String filename); 998 999 /** 1000 * Returns an image which gets pixel data from the specified URL. 1001 * The returned Image is a new object which will not be shared 1002 * with any other caller of this method or its getImage variant. 1003 * <p> 1004 * This method first checks if there is a security manager installed. 1005 * If so, the method calls the security manager's 1006 * <code>checkPermission</code> method with the 1007 * url.openConnection().getPermission() permission to ensure 1008 * that the image creation is allowed. For compatibility 1009 * with pre-1.2 security managers, if the access is denied with 1010 * <code>FilePermission</code> or <code>SocketPermission</code>, 1011 * the method throws <code>SecurityException</code> 1012 * if the corresponding 1.1-style SecurityManager.checkXXX method 1013 * also denies permission. 1014 * @param url the URL to use in fetching the pixel data. 1015 * @return an image which gets its pixel data from 1016 * the specified URL. 1017 * @throws SecurityException if a security manager exists and its 1018 * checkPermission method doesn't allow 1019 * the operation. 1020 * @see #getImage(java.net.URL) 1021 */ 1022 public abstract Image createImage(URL url); 1023 1024 /** 1025 * Prepares an image for rendering. 1026 * <p> 1027 * If the values of the width and height arguments are both 1028 * <code>-1</code>, this method prepares the image for rendering 1029 * on the default screen; otherwise, this method prepares an image 1030 * for rendering on the default screen at the specified width and height. 1031 * <p> 1032 * The image data is downloaded asynchronously in another thread, 1033 * and an appropriately scaled screen representation of the image is 1034 * generated. 1035 * <p> 1036 * This method is called by components <code>prepareImage</code> 1037 * methods. 1038 * <p> 1039 * Information on the flags returned by this method can be found 1040 * with the definition of the <code>ImageObserver</code> interface. 1041 1042 * @param image the image for which to prepare a 1043 * screen representation. 1044 * @param width the width of the desired screen 1045 * representation, or <code>-1</code>. 1046 * @param height the height of the desired screen 1047 * representation, or <code>-1</code>. 1048 * @param observer the <code>ImageObserver</code> 1049 * object to be notified as the 1050 * image is being prepared. 1051 * @return <code>true</code> if the image has already been 1052 * fully prepared; <code>false</code> otherwise. 1053 * @see java.awt.Component#prepareImage(java.awt.Image, 1054 * java.awt.image.ImageObserver) 1055 * @see java.awt.Component#prepareImage(java.awt.Image, 1056 * int, int, java.awt.image.ImageObserver) 1057 * @see java.awt.image.ImageObserver 1058 */ 1059 public abstract boolean prepareImage(Image image, int width, int height, 1060 ImageObserver observer); 1061 1062 /** 1063 * Indicates the construction status of a specified image that is 1064 * being prepared for display. 1065 * <p> 1066 * If the values of the width and height arguments are both 1067 * <code>-1</code>, this method returns the construction status of 1068 * a screen representation of the specified image in this toolkit. 1069 * Otherwise, this method returns the construction status of a 1070 * scaled representation of the image at the specified width 1071 * and height. 1072 * <p> 1073 * This method does not cause the image to begin loading. 1074 * An application must call <code>prepareImage</code> to force 1075 * the loading of an image. 1076 * <p> 1077 * This method is called by the component's <code>checkImage</code> 1078 * methods. 1079 * <p> 1080 * Information on the flags returned by this method can be found 1081 * with the definition of the <code>ImageObserver</code> interface. 1082 * @param image the image whose status is being checked. 1083 * @param width the width of the scaled version whose status is 1084 * being checked, or <code>-1</code>. 1085 * @param height the height of the scaled version whose status 1086 * is being checked, or <code>-1</code>. 1087 * @param observer the <code>ImageObserver</code> object to be 1088 * notified as the image is being prepared. 1089 * @return the bitwise inclusive <strong>OR</strong> of the 1090 * <code>ImageObserver</code> flags for the 1091 * image data that is currently available. 1092 * @see java.awt.Toolkit#prepareImage(java.awt.Image, 1093 * int, int, java.awt.image.ImageObserver) 1094 * @see java.awt.Component#checkImage(java.awt.Image, 1095 * java.awt.image.ImageObserver) 1096 * @see java.awt.Component#checkImage(java.awt.Image, 1097 * int, int, java.awt.image.ImageObserver) 1098 * @see java.awt.image.ImageObserver 1099 */ 1100 public abstract int checkImage(Image image, int width, int height, 1101 ImageObserver observer); 1102 1103 /** 1104 * Creates an image with the specified image producer. 1105 * @param producer the image producer to be used. 1106 * @return an image with the specified image producer. 1107 * @see java.awt.Image 1108 * @see java.awt.image.ImageProducer 1109 * @see java.awt.Component#createImage(java.awt.image.ImageProducer) 1110 */ 1111 public abstract Image createImage(ImageProducer producer); 1112 1113 /** 1114 * Creates an image which decodes the image stored in the specified 1115 * byte array. 1116 * <p> 1117 * The data must be in some image format, such as GIF or JPEG, 1118 * that is supported by this toolkit. 1119 * @param imagedata an array of bytes, representing 1120 * image data in a supported image format. 1121 * @return an image. 1122 * @since JDK1.1 1123 */ 1124 public Image createImage(byte[] imagedata) { 1125 return createImage(imagedata, 0, imagedata.length); 1126 } 1127 1128 /** 1129 * Creates an image which decodes the image stored in the specified 1130 * byte array, and at the specified offset and length. 1131 * The data must be in some image format, such as GIF or JPEG, 1132 * that is supported by this toolkit. 1133 * @param imagedata an array of bytes, representing 1134 * image data in a supported image format. 1135 * @param imageoffset the offset of the beginning 1136 * of the data in the array. 1137 * @param imagelength the length of the data in the array. 1138 * @return an image. 1139 * @since JDK1.1 1140 */ 1141 public abstract Image createImage(byte[] imagedata, 1142 int imageoffset, 1143 int imagelength); 1144 1145 /** 1146 * Gets a <code>PrintJob</code> object which is the result of initiating 1147 * a print operation on the toolkit's platform. 1148 * <p> 1149 * Each actual implementation of this method should first check if there 1150 * is a security manager installed. If there is, the method should call 1151 * the security manager's <code>checkPrintJobAccess</code> method to 1152 * ensure initiation of a print operation is allowed. If the default 1153 * implementation of <code>checkPrintJobAccess</code> is used (that is, 1154 * that method is not overriden), then this results in a call to the 1155 * security manager's <code>checkPermission</code> method with a <code> 1156 * RuntimePermission("queuePrintJob")</code> permission. 1157 * 1158 * @param frame the parent of the print dialog. May not be null. 1159 * @param jobtitle the title of the PrintJob. A null title is equivalent 1160 * to "". 1161 * @param props a Properties object containing zero or more properties. 1162 * Properties are not standardized and are not consistent across 1163 * implementations. Because of this, PrintJobs which require job 1164 * and page control should use the version of this function which 1165 * takes JobAttributes and PageAttributes objects. This object 1166 * may be updated to reflect the user's job choices on exit. May 1167 * be null. 1168 * @return a <code>PrintJob</code> object, or <code>null</code> if the 1169 * user cancelled the print job. 1170 * @throws NullPointerException if frame is null 1171 * @throws SecurityException if this thread is not allowed to initiate a 1172 * print job request 1173 * @see java.awt.GraphicsEnvironment#isHeadless 1174 * @see java.awt.PrintJob 1175 * @see java.lang.RuntimePermission 1176 * @since JDK1.1 1177 */ 1178 public abstract PrintJob getPrintJob(Frame frame, String jobtitle, 1179 Properties props); 1180 1181 /** 1182 * Gets a <code>PrintJob</code> object which is the result of initiating 1183 * a print operation on the toolkit's platform. 1184 * <p> 1185 * Each actual implementation of this method should first check if there 1186 * is a security manager installed. If there is, the method should call 1187 * the security manager's <code>checkPrintJobAccess</code> method to 1188 * ensure initiation of a print operation is allowed. If the default 1189 * implementation of <code>checkPrintJobAccess</code> is used (that is, 1190 * that method is not overriden), then this results in a call to the 1191 * security manager's <code>checkPermission</code> method with a <code> 1192 * RuntimePermission("queuePrintJob")</code> permission. 1193 * 1194 * @param frame the parent of the print dialog. May not be null. 1195 * @param jobtitle the title of the PrintJob. A null title is equivalent 1196 * to "". 1197 * @param jobAttributes a set of job attributes which will control the 1198 * PrintJob. The attributes will be updated to reflect the user's 1199 * choices as outlined in the JobAttributes documentation. May be 1200 * null. 1201 * @param pageAttributes a set of page attributes which will control the 1202 * PrintJob. The attributes will be applied to every page in the 1203 * job. The attributes will be updated to reflect the user's 1204 * choices as outlined in the PageAttributes documentation. May be 1205 * null. 1206 * @return a <code>PrintJob</code> object, or <code>null</code> if the 1207 * user cancelled the print job. 1208 * @throws NullPointerException if frame is null 1209 * @throws IllegalArgumentException if pageAttributes specifies differing 1210 * cross feed and feed resolutions. Also if this thread has 1211 * access to the file system and jobAttributes specifies 1212 * print to file, and the specified destination file exists but 1213 * is a directory rather than a regular file, does not exist but 1214 * cannot be created, or cannot be opened for any other reason. 1215 * However in the case of print to file, if a dialog is also 1216 * requested to be displayed then the user will be given an 1217 * opportunity to select a file and proceed with printing. 1218 * The dialog will ensure that the selected output file 1219 * is valid before returning from this method. 1220 * @throws SecurityException if this thread is not allowed to initiate a 1221 * print job request, or if jobAttributes specifies print to file, 1222 * and this thread is not allowed to access the file system 1223 * @see java.awt.PrintJob 1224 * @see java.awt.GraphicsEnvironment#isHeadless 1225 * @see java.lang.RuntimePermission 1226 * @see java.awt.JobAttributes 1227 * @see java.awt.PageAttributes 1228 * @since 1.3 1229 */ 1230 public PrintJob getPrintJob(Frame frame, String jobtitle, 1231 JobAttributes jobAttributes, 1232 PageAttributes pageAttributes) { 1233 // Override to add printing support with new job/page control classes 1234 1235 if (this != Toolkit.getDefaultToolkit()) { 1236 return Toolkit.getDefaultToolkit().getPrintJob(frame, jobtitle, 1237 jobAttributes, 1238 pageAttributes); 1239 } else { 1240 return getPrintJob(frame, jobtitle, null); 1241 } 1242 } 1243 1244 /** 1245 * Emits an audio beep depending on native system settings and hardware 1246 * capabilities. 1247 * @since JDK1.1 1248 */ 1249 public abstract void beep(); 1250 1251 /** 1252 * Gets the singleton instance of the system Clipboard which interfaces 1253 * with clipboard facilities provided by the native platform. This 1254 * clipboard enables data transfer between Java programs and native 1255 * applications which use native clipboard facilities. 1256 * <p> 1257 * In addition to any and all formats specified in the flavormap.properties 1258 * file, or other file specified by the <code>AWT.DnD.flavorMapFileURL 1259 * </code> Toolkit property, text returned by the system Clipboard's <code> 1260 * getTransferData()</code> method is available in the following flavors: 1261 * <ul> 1262 * <li>DataFlavor.stringFlavor</li> 1263 * <li>DataFlavor.plainTextFlavor (<b>deprecated</b>)</li> 1264 * </ul> 1265 * As with <code>java.awt.datatransfer.StringSelection</code>, if the 1266 * requested flavor is <code>DataFlavor.plainTextFlavor</code>, or an 1267 * equivalent flavor, a Reader is returned. <b>Note:</b> The behavior of 1268 * the system Clipboard's <code>getTransferData()</code> method for <code> 1269 * DataFlavor.plainTextFlavor</code>, and equivalent DataFlavors, is 1270 * inconsistent with the definition of <code>DataFlavor.plainTextFlavor 1271 * </code>. Because of this, support for <code> 1272 * DataFlavor.plainTextFlavor</code>, and equivalent flavors, is 1273 * <b>deprecated</b>. 1274 * <p> 1275 * Each actual implementation of this method should first check if there 1276 * is a security manager installed. If there is, the method should call 1277 * the security manager's <code>checkSystemClipboardAccess</code> method 1278 * to ensure it's ok to to access the system clipboard. If the default 1279 * implementation of <code>checkSystemClipboardAccess</code> is used (that 1280 * is, that method is not overriden), then this results in a call to the 1281 * security manager's <code>checkPermission</code> method with an <code> 1282 * AWTPermission("accessClipboard")</code> permission. 1283 * 1284 * @return the system Clipboard 1285 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 1286 * returns true 1287 * @see java.awt.GraphicsEnvironment#isHeadless 1288 * @see java.awt.datatransfer.Clipboard 1289 * @see java.awt.datatransfer.StringSelection 1290 * @see java.awt.datatransfer.DataFlavor#stringFlavor 1291 * @see java.awt.datatransfer.DataFlavor#plainTextFlavor 1292 * @see java.io.Reader 1293 * @see java.awt.AWTPermission 1294 * @since JDK1.1 1295 */ 1296 public abstract Clipboard getSystemClipboard() 1297 throws HeadlessException; 1298 1299 /** 1300 * Gets the singleton instance of the system selection as a 1301 * <code>Clipboard</code> object. This allows an application to read and 1302 * modify the current, system-wide selection. 1303 * <p> 1304 * An application is responsible for updating the system selection whenever 1305 * the user selects text, using either the mouse or the keyboard. 1306 * Typically, this is implemented by installing a 1307 * <code>FocusListener</code> on all <code>Component</code>s which support 1308 * text selection, and, between <code>FOCUS_GAINED</code> and 1309 * <code>FOCUS_LOST</code> events delivered to that <code>Component</code>, 1310 * updating the system selection <code>Clipboard</code> when the selection 1311 * changes inside the <code>Component</code>. Properly updating the system 1312 * selection ensures that a Java application will interact correctly with 1313 * native applications and other Java applications running simultaneously 1314 * on the system. Note that <code>java.awt.TextComponent</code> and 1315 * <code>javax.swing.text.JTextComponent</code> already adhere to this 1316 * policy. When using these classes, and their subclasses, developers need 1317 * not write any additional code. 1318 * <p> 1319 * Some platforms do not support a system selection <code>Clipboard</code>. 1320 * On those platforms, this method will return <code>null</code>. In such a 1321 * case, an application is absolved from its responsibility to update the 1322 * system selection <code>Clipboard</code> as described above. 1323 * <p> 1324 * Each actual implementation of this method should first check if there 1325 * is a <code>SecurityManager</code> installed. If there is, the method 1326 * should call the <code>SecurityManager</code>'s 1327 * <code>checkSystemClipboardAccess</code> method to ensure that client 1328 * code has access the system selection. If the default implementation of 1329 * <code>checkSystemClipboardAccess</code> is used (that is, if the method 1330 * is not overridden), then this results in a call to the 1331 * <code>SecurityManager</code>'s <code>checkPermission</code> method with 1332 * an <code>AWTPermission("accessClipboard")</code> permission. 1333 * 1334 * @return the system selection as a <code>Clipboard</code>, or 1335 * <code>null</code> if the native platform does not support a 1336 * system selection <code>Clipboard</code> 1337 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 1338 * returns true 1339 * 1340 * @see java.awt.datatransfer.Clipboard 1341 * @see java.awt.event.FocusListener 1342 * @see java.awt.event.FocusEvent#FOCUS_GAINED 1343 * @see java.awt.event.FocusEvent#FOCUS_LOST 1344 * @see TextComponent 1345 * @see javax.swing.text.JTextComponent 1346 * @see AWTPermission 1347 * @see GraphicsEnvironment#isHeadless 1348 * @since 1.4 1349 */ 1350 public Clipboard getSystemSelection() throws HeadlessException { 1351 GraphicsEnvironment.checkHeadless(); 1352 1353 if (this != Toolkit.getDefaultToolkit()) { 1354 return Toolkit.getDefaultToolkit().getSystemSelection(); 1355 } else { 1356 GraphicsEnvironment.checkHeadless(); 1357 return null; 1358 } 1359 } 1360 1361 /** 1362 * Determines which modifier key is the appropriate accelerator 1363 * key for menu shortcuts. 1364 * <p> 1365 * Menu shortcuts, which are embodied in the 1366 * <code>MenuShortcut</code> class, are handled by the 1367 * <code>MenuBar</code> class. 1368 * <p> 1369 * By default, this method returns <code>Event.CTRL_MASK</code>. 1370 * Toolkit implementations should override this method if the 1371 * <b>Control</b> key isn't the correct key for accelerators. 1372 * @return the modifier mask on the <code>Event</code> class 1373 * that is used for menu shortcuts on this toolkit. 1374 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 1375 * returns true 1376 * @see java.awt.GraphicsEnvironment#isHeadless 1377 * @see java.awt.MenuBar 1378 * @see java.awt.MenuShortcut 1379 * @since JDK1.1 1380 */ 1381 public int getMenuShortcutKeyMask() throws HeadlessException { 1382 GraphicsEnvironment.checkHeadless(); 1383 1384 return Event.CTRL_MASK; 1385 } 1386 1387 /** 1388 * Returns whether the given locking key on the keyboard is currently in 1389 * its "on" state. 1390 * Valid key codes are 1391 * {@link java.awt.event.KeyEvent#VK_CAPS_LOCK VK_CAPS_LOCK}, 1392 * {@link java.awt.event.KeyEvent#VK_NUM_LOCK VK_NUM_LOCK}, 1393 * {@link java.awt.event.KeyEvent#VK_SCROLL_LOCK VK_SCROLL_LOCK}, and 1394 * {@link java.awt.event.KeyEvent#VK_KANA_LOCK VK_KANA_LOCK}. 1395 * 1396 * @exception java.lang.IllegalArgumentException if <code>keyCode</code> 1397 * is not one of the valid key codes 1398 * @exception java.lang.UnsupportedOperationException if the host system doesn't 1399 * allow getting the state of this key programmatically, or if the keyboard 1400 * doesn't have this key 1401 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 1402 * returns true 1403 * @see java.awt.GraphicsEnvironment#isHeadless 1404 * @since 1.3 1405 */ 1406 public boolean getLockingKeyState(int keyCode) 1407 throws UnsupportedOperationException 1408 { 1409 GraphicsEnvironment.checkHeadless(); 1410 1411 if (! (keyCode == KeyEvent.VK_CAPS_LOCK || keyCode == KeyEvent.VK_NUM_LOCK || 1412 keyCode == KeyEvent.VK_SCROLL_LOCK || keyCode == KeyEvent.VK_KANA_LOCK)) { 1413 throw new IllegalArgumentException("invalid key for Toolkit.getLockingKeyState"); 1414 } 1415 throw new UnsupportedOperationException("Toolkit.getLockingKeyState"); 1416 } 1417 1418 /** 1419 * Sets the state of the given locking key on the keyboard. 1420 * Valid key codes are 1421 * {@link java.awt.event.KeyEvent#VK_CAPS_LOCK VK_CAPS_LOCK}, 1422 * {@link java.awt.event.KeyEvent#VK_NUM_LOCK VK_NUM_LOCK}, 1423 * {@link java.awt.event.KeyEvent#VK_SCROLL_LOCK VK_SCROLL_LOCK}, and 1424 * {@link java.awt.event.KeyEvent#VK_KANA_LOCK VK_KANA_LOCK}. 1425 * <p> 1426 * Depending on the platform, setting the state of a locking key may 1427 * involve event processing and therefore may not be immediately 1428 * observable through getLockingKeyState. 1429 * 1430 * @exception java.lang.IllegalArgumentException if <code>keyCode</code> 1431 * is not one of the valid key codes 1432 * @exception java.lang.UnsupportedOperationException if the host system doesn't 1433 * allow setting the state of this key programmatically, or if the keyboard 1434 * doesn't have this key 1435 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 1436 * returns true 1437 * @see java.awt.GraphicsEnvironment#isHeadless 1438 * @since 1.3 1439 */ 1440 public void setLockingKeyState(int keyCode, boolean on) 1441 throws UnsupportedOperationException 1442 { 1443 GraphicsEnvironment.checkHeadless(); 1444 1445 if (! (keyCode == KeyEvent.VK_CAPS_LOCK || keyCode == KeyEvent.VK_NUM_LOCK || 1446 keyCode == KeyEvent.VK_SCROLL_LOCK || keyCode == KeyEvent.VK_KANA_LOCK)) { 1447 throw new IllegalArgumentException("invalid key for Toolkit.setLockingKeyState"); 1448 } 1449 throw new UnsupportedOperationException("Toolkit.setLockingKeyState"); 1450 } 1451 1452 /** 1453 * Give native peers the ability to query the native container 1454 * given a native component (eg the direct parent may be lightweight). 1455 */ 1456 protected static Container getNativeContainer(Component c) { 1457 return c.getNativeContainer(); 1458 } 1459 1460 /** 1461 * Creates a new custom cursor object. 1462 * If the image to display is invalid, the cursor will be hidden (made 1463 * completely transparent), and the hotspot will be set to (0, 0). 1464 * 1465 * <p>Note that multi-frame images are invalid and may cause this 1466 * method to hang. 1467 * 1468 * @param cursor the image to display when the cursor is actived 1469 * @param hotSpot the X and Y of the large cursor's hot spot; the 1470 * hotSpot values must be less than the Dimension returned by 1471 * <code>getBestCursorSize</code> 1472 * @param name a localized description of the cursor, for Java Accessibility use 1473 * @exception IndexOutOfBoundsException if the hotSpot values are outside 1474 * the bounds of the cursor 1475 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 1476 * returns true 1477 * @see java.awt.GraphicsEnvironment#isHeadless 1478 * @since 1.2 1479 */ 1480 public Cursor createCustomCursor(Image cursor, Point hotSpot, String name) 1481 throws IndexOutOfBoundsException, HeadlessException 1482 { 1483 // Override to implement custom cursor support. 1484 if (this != Toolkit.getDefaultToolkit()) { 1485 return Toolkit.getDefaultToolkit(). 1486 createCustomCursor(cursor, hotSpot, name); 1487 } else { 1488 return new Cursor(Cursor.DEFAULT_CURSOR); 1489 } 1490 } 1491 1492 /** 1493 * Returns the supported cursor dimension which is closest to the desired 1494 * sizes. Systems which only support a single cursor size will return that 1495 * size regardless of the desired sizes. Systems which don't support custom 1496 * cursors will return a dimension of 0, 0. <p> 1497 * Note: if an image is used whose dimensions don't match a supported size 1498 * (as returned by this method), the Toolkit implementation will attempt to 1499 * resize the image to a supported size. 1500 * Since converting low-resolution images is difficult, 1501 * no guarantees are made as to the quality of a cursor image which isn't a 1502 * supported size. It is therefore recommended that this method 1503 * be called and an appropriate image used so no image conversion is made. 1504 * 1505 * @param preferredWidth the preferred cursor width the component would like 1506 * to use. 1507 * @param preferredHeight the preferred cursor height the component would like 1508 * to use. 1509 * @return the closest matching supported cursor size, or a dimension of 0,0 if 1510 * the Toolkit implementation doesn't support custom cursors. 1511 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 1512 * returns true 1513 * @see java.awt.GraphicsEnvironment#isHeadless 1514 * @since 1.2 1515 */ 1516 public Dimension getBestCursorSize(int preferredWidth, 1517 int preferredHeight) throws HeadlessException { 1518 GraphicsEnvironment.checkHeadless(); 1519 1520 // Override to implement custom cursor support. 1521 if (this != Toolkit.getDefaultToolkit()) { 1522 return Toolkit.getDefaultToolkit(). 1523 getBestCursorSize(preferredWidth, preferredHeight); 1524 } else { 1525 return new Dimension(0, 0); 1526 } 1527 } 1528 1529 /** 1530 * Returns the maximum number of colors the Toolkit supports in a custom cursor 1531 * palette.<p> 1532 * Note: if an image is used which has more colors in its palette than 1533 * the supported maximum, the Toolkit implementation will attempt to flatten the 1534 * palette to the maximum. Since converting low-resolution images is difficult, 1535 * no guarantees are made as to the quality of a cursor image which has more 1536 * colors than the system supports. It is therefore recommended that this method 1537 * be called and an appropriate image used so no image conversion is made. 1538 * 1539 * @return the maximum number of colors, or zero if custom cursors are not 1540 * supported by this Toolkit implementation. 1541 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 1542 * returns true 1543 * @see java.awt.GraphicsEnvironment#isHeadless 1544 * @since 1.2 1545 */ 1546 public int getMaximumCursorColors() throws HeadlessException { 1547 GraphicsEnvironment.checkHeadless(); 1548 1549 // Override to implement custom cursor support. 1550 if (this != Toolkit.getDefaultToolkit()) { 1551 return Toolkit.getDefaultToolkit().getMaximumCursorColors(); 1552 } else { 1553 return 0; 1554 } 1555 } 1556 1557 /** 1558 * Returns whether Toolkit supports this state for 1559 * <code>Frame</code>s. This method tells whether the <em>UI 1560 * concept</em> of, say, maximization or iconification is 1561 * supported. It will always return false for "compound" states 1562 * like <code>Frame.ICONIFIED|Frame.MAXIMIZED_VERT</code>. 1563 * In other words, the rule of thumb is that only queries with a 1564 * single frame state constant as an argument are meaningful. 1565 * <p>Note that supporting a given concept is a platform- 1566 * dependent feature. Due to native limitations the Toolkit 1567 * object may report a particular state as supported, however at 1568 * the same time the Toolkit object will be unable to apply the 1569 * state to a given frame. This circumstance has two following 1570 * consequences: 1571 * <ul> 1572 * <li>Only the return value of {@code false} for the present 1573 * method actually indicates that the given state is not 1574 * supported. If the method returns {@code true} the given state 1575 * may still be unsupported and/or unavailable for a particular 1576 * frame. 1577 * <li>The developer should consider examining the value of the 1578 * {@link java.awt.event.WindowEvent#getNewState} method of the 1579 * {@code WindowEvent} received through the {@link 1580 * java.awt.event.WindowStateListener}, rather than assuming 1581 * that the state given to the {@code setExtendedState()} method 1582 * will be definitely applied. For more information see the 1583 * documentation for the {@link Frame#setExtendedState} method. 1584 * </ul> 1585 * 1586 * @param state one of named frame state constants. 1587 * @return <code>true</code> is this frame state is supported by 1588 * this Toolkit implementation, <code>false</code> otherwise. 1589 * @exception HeadlessException 1590 * if <code>GraphicsEnvironment.isHeadless()</code> 1591 * returns <code>true</code>. 1592 * @see java.awt.Window#addWindowStateListener 1593 * @since 1.4 1594 */ 1595 public boolean isFrameStateSupported(int state) 1596 throws HeadlessException 1597 { 1598 GraphicsEnvironment.checkHeadless(); 1599 1600 if (this != Toolkit.getDefaultToolkit()) { 1601 return Toolkit.getDefaultToolkit(). 1602 isFrameStateSupported(state); 1603 } else { 1604 return (state == Frame.NORMAL); // others are not guaranteed 1605 } 1606 } 1607 1608 /** 1609 * Support for I18N: any visible strings should be stored in 1610 * sun.awt.resources.awt.properties. The ResourceBundle is stored 1611 * here, so that only one copy is maintained. 1612 */ 1613 private static ResourceBundle resources; 1614 1615 /** 1616 * Initialize JNI field and method ids 1617 */ 1618 private static native void initIDs(); 1619 1620 /** 1621 * WARNING: This is a temporary workaround for a problem in the 1622 * way the AWT loads native libraries. A number of classes in the 1623 * AWT package have a native method, initIDs(), which initializes 1624 * the JNI field and method ids used in the native portion of 1625 * their implementation. 1626 * 1627 * Since the use and storage of these ids is done by the 1628 * implementation libraries, the implementation of these method is 1629 * provided by the particular AWT implementations (for example, 1630 * "Toolkit"s/Peer), such as Motif, Microsoft Windows, or Tiny. The 1631 * problem is that this means that the native libraries must be 1632 * loaded by the java.* classes, which do not necessarily know the 1633 * names of the libraries to load. A better way of doing this 1634 * would be to provide a separate library which defines java.awt.* 1635 * initIDs, and exports the relevant symbols out to the 1636 * implementation libraries. 1637 * 1638 * For now, we know it's done by the implementation, and we assume 1639 * that the name of the library is "awt". -br. 1640 * 1641 * If you change loadLibraries(), please add the change to 1642 * java.awt.image.ColorModel.loadLibraries(). Unfortunately, 1643 * classes can be loaded in java.awt.image that depend on 1644 * libawt and there is no way to call Toolkit.loadLibraries() 1645 * directly. -hung 1646 */ 1647 private static boolean loaded = false; 1648 static void loadLibraries() { 1649 if (!loaded) { 1650 java.security.AccessController.doPrivileged( 1651 new java.security.PrivilegedAction<Void>() { 1652 public Void run() { 1653 System.loadLibrary("awt"); 1654 return null; 1655 } 1656 }); 1657 loaded = true; 1658 } 1659 } 1660 1661 static { 1662 java.security.AccessController.doPrivileged( 1663 new java.security.PrivilegedAction<Void>() { 1664 public Void run() { 1665 try { 1666 resources = 1667 ResourceBundle.getBundle("sun.awt.resources.awt", 1668 CoreResourceBundleControl.getRBControlInstance()); 1669 } catch (MissingResourceException e) { 1670 // No resource file; defaults will be used. 1671 } 1672 return null; 1673 } 1674 }); 1675 1676 // ensure that the proper libraries are loaded 1677 loadLibraries(); 1678 initAssistiveTechnologies(); 1679 if (!GraphicsEnvironment.isHeadless()) { 1680 initIDs(); 1681 } 1682 } 1683 1684 /** 1685 * Gets a property with the specified key and default. 1686 * This method returns defaultValue if the property is not found. 1687 */ 1688 public static String getProperty(String key, String defaultValue) { 1689 if (resources != null) { 1690 try { 1691 return resources.getString(key); 1692 } 1693 catch (MissingResourceException e) {} 1694 } 1695 1696 return defaultValue; 1697 } 1698 1699 /** 1700 * Get the application's or applet's EventQueue instance. 1701 * Depending on the Toolkit implementation, different EventQueues 1702 * may be returned for different applets. Applets should 1703 * therefore not assume that the EventQueue instance returned 1704 * by this method will be shared by other applets or the system. 1705 * 1706 * <p>First, if there is a security manager, its 1707 * <code>checkAwtEventQueueAccess</code> 1708 * method is called. 1709 * If the default implementation of <code>checkAwtEventQueueAccess</code> 1710 * is used (that is, that method is not overriden), then this results in 1711 * a call to the security manager's <code>checkPermission</code> method 1712 * with an <code>AWTPermission("accessEventQueue")</code> permission. 1713 * 1714 * @return the <code>EventQueue</code> object 1715 * @throws SecurityException 1716 * if a security manager exists and its <code>{@link 1717 * java.lang.SecurityManager#checkAwtEventQueueAccess}</code> 1718 * method denies access to the <code>EventQueue</code> 1719 * @see java.awt.AWTPermission 1720 */ 1721 public final EventQueue getSystemEventQueue() { 1722 SecurityManager security = System.getSecurityManager(); 1723 if (security != null) { 1724 security.checkAwtEventQueueAccess(); 1725 } 1726 return getSystemEventQueueImpl(); 1727 } 1728 1729 /** 1730 * Gets the application's or applet's <code>EventQueue</code> 1731 * instance, without checking access. For security reasons, 1732 * this can only be called from a <code>Toolkit</code> subclass. 1733 * @return the <code>EventQueue</code> object 1734 */ 1735 protected abstract EventQueue getSystemEventQueueImpl(); 1736 1737 /* Accessor method for use by AWT package routines. */ 1738 static EventQueue getEventQueue() { 1739 return getDefaultToolkit().getSystemEventQueueImpl(); 1740 } 1741 1742 /** 1743 * Creates the peer for a DragSourceContext. 1744 * Always throws InvalidDndOperationException if 1745 * GraphicsEnvironment.isHeadless() returns true. 1746 * @see java.awt.GraphicsEnvironment#isHeadless 1747 */ 1748 public abstract DragSourceContextPeer createDragSourceContextPeer(DragGestureEvent dge) throws InvalidDnDOperationException; 1749 1750 /** 1751 * Creates a concrete, platform dependent, subclass of the abstract 1752 * DragGestureRecognizer class requested, and associates it with the 1753 * DragSource, Component and DragGestureListener specified. 1754 * 1755 * subclasses should override this to provide their own implementation 1756 * 1757 * @param abstractRecognizerClass The abstract class of the required recognizer 1758 * @param ds The DragSource 1759 * @param c The Component target for the DragGestureRecognizer 1760 * @param srcActions The actions permitted for the gesture 1761 * @param dgl The DragGestureListener 1762 * 1763 * @return the new object or null. Always returns null if 1764 * GraphicsEnvironment.isHeadless() returns true. 1765 * @see java.awt.GraphicsEnvironment#isHeadless 1766 */ 1767 public <T extends DragGestureRecognizer> T 1768 createDragGestureRecognizer(Class<T> abstractRecognizerClass, 1769 DragSource ds, Component c, int srcActions, 1770 DragGestureListener dgl) 1771 { 1772 return null; 1773 } 1774 1775 /** 1776 * Obtains a value for the specified desktop property. 1777 * 1778 * A desktop property is a uniquely named value for a resource that 1779 * is Toolkit global in nature. Usually it also is an abstract 1780 * representation for an underlying platform dependent desktop setting. 1781 * For more information on desktop properties supported by the AWT see 1782 * <a href="doc-files/DesktopProperties.html">AWT Desktop Properties</a>. 1783 */ 1784 public final synchronized Object getDesktopProperty(String propertyName) { 1785 // This is a workaround for headless toolkits. It would be 1786 // better to override this method but it is declared final. 1787 // "this instanceof" syntax defeats polymorphism. 1788 // --mm, 03/03/00 1789 if (this instanceof HeadlessToolkit) { 1790 return ((HeadlessToolkit)this).getUnderlyingToolkit() 1791 .getDesktopProperty(propertyName); 1792 } 1793 1794 if (desktopProperties.isEmpty()) { 1795 initializeDesktopProperties(); 1796 } 1797 1798 Object value; 1799 1800 // This property should never be cached 1801 if (propertyName.equals("awt.dynamicLayoutSupported")) { 1802 value = lazilyLoadDesktopProperty(propertyName); 1803 return value; 1804 } 1805 1806 value = desktopProperties.get(propertyName); 1807 1808 if (value == null) { 1809 value = lazilyLoadDesktopProperty(propertyName); 1810 1811 if (value != null) { 1812 setDesktopProperty(propertyName, value); 1813 } 1814 } 1815 1816 /* for property "awt.font.desktophints" */ 1817 if (value instanceof RenderingHints) { 1818 value = ((RenderingHints)value).clone(); 1819 } 1820 1821 return value; 1822 } 1823 1824 /** 1825 * Sets the named desktop property to the specified value and fires a 1826 * property change event to notify any listeners that the value has changed. 1827 */ 1828 protected final void setDesktopProperty(String name, Object newValue) { 1829 // This is a workaround for headless toolkits. It would be 1830 // better to override this method but it is declared final. 1831 // "this instanceof" syntax defeats polymorphism. 1832 // --mm, 03/03/00 1833 if (this instanceof HeadlessToolkit) { 1834 ((HeadlessToolkit)this).getUnderlyingToolkit() 1835 .setDesktopProperty(name, newValue); 1836 return; 1837 } 1838 Object oldValue; 1839 1840 synchronized (this) { 1841 oldValue = desktopProperties.get(name); 1842 desktopProperties.put(name, newValue); 1843 } 1844 1845 // Don't fire change event if old and new values are null. 1846 // It helps to avoid recursive resending of WM_THEMECHANGED 1847 if (oldValue != null || newValue != null) { 1848 desktopPropsSupport.firePropertyChange(name, oldValue, newValue); 1849 } 1850 } 1851 1852 /** 1853 * an opportunity to lazily evaluate desktop property values. 1854 */ 1855 protected Object lazilyLoadDesktopProperty(String name) { 1856 return null; 1857 } 1858 1859 /** 1860 * initializeDesktopProperties 1861 */ 1862 protected void initializeDesktopProperties() { 1863 } 1864 1865 /** 1866 * Adds the specified property change listener for the named desktop 1867 * property. When a {@link java.beans.PropertyChangeListenerProxy} object is added, 1868 * its property name is ignored, and the wrapped listener is added. 1869 * If {@code name} is {@code null} or {@code pcl} is {@code null}, 1870 * no exception is thrown and no action is performed. 1871 * 1872 * @param name The name of the property to listen for 1873 * @param pcl The property change listener 1874 * @see PropertyChangeSupport#addPropertyChangeListener(String, 1875 PropertyChangeListener) 1876 * @since 1.2 1877 */ 1878 public void addPropertyChangeListener(String name, PropertyChangeListener pcl) { 1879 desktopPropsSupport.addPropertyChangeListener(name, pcl); 1880 } 1881 1882 /** 1883 * Removes the specified property change listener for the named 1884 * desktop property. When a {@link java.beans.PropertyChangeListenerProxy} object 1885 * is removed, its property name is ignored, and 1886 * the wrapped listener is removed. 1887 * If {@code name} is {@code null} or {@code pcl} is {@code null}, 1888 * no exception is thrown and no action is performed. 1889 * 1890 * @param name The name of the property to remove 1891 * @param pcl The property change listener 1892 * @see PropertyChangeSupport#removePropertyChangeListener(String, 1893 PropertyChangeListener) 1894 * @since 1.2 1895 */ 1896 public void removePropertyChangeListener(String name, PropertyChangeListener pcl) { 1897 desktopPropsSupport.removePropertyChangeListener(name, pcl); 1898 } 1899 1900 /** 1901 * Returns an array of all the property change listeners 1902 * registered on this toolkit. The returned array 1903 * contains {@link java.beans.PropertyChangeListenerProxy} objects 1904 * that associate listeners with the names of desktop properties. 1905 * 1906 * @return all of this toolkit's {@link PropertyChangeListener} 1907 * objects wrapped in {@code java.beans.PropertyChangeListenerProxy} objects 1908 * or an empty array if no listeners are added 1909 * 1910 * @see PropertyChangeSupport#getPropertyChangeListeners() 1911 * @since 1.4 1912 */ 1913 public PropertyChangeListener[] getPropertyChangeListeners() { 1914 return desktopPropsSupport.getPropertyChangeListeners(); 1915 } 1916 1917 /** 1918 * Returns an array of all property change listeners 1919 * associated with the specified name of a desktop property. 1920 * 1921 * @param propertyName the named property 1922 * @return all of the {@code PropertyChangeListener} objects 1923 * associated with the specified name of a desktop property 1924 * or an empty array if no such listeners are added 1925 * 1926 * @see PropertyChangeSupport#getPropertyChangeListeners(String) 1927 * @since 1.4 1928 */ 1929 public PropertyChangeListener[] getPropertyChangeListeners(String propertyName) { 1930 return desktopPropsSupport.getPropertyChangeListeners(propertyName); 1931 } 1932 1933 protected final Map<String,Object> desktopProperties = 1934 new HashMap<String,Object>(); 1935 protected final PropertyChangeSupport desktopPropsSupport = 1936 Toolkit.createPropertyChangeSupport(this); 1937 1938 /** 1939 * Returns whether the always-on-top mode is supported by this toolkit. 1940 * To detect whether the always-on-top mode is supported for a 1941 * particular Window, use {@link Window#isAlwaysOnTopSupported}. 1942 * @return <code>true</code>, if current toolkit supports the always-on-top mode, 1943 * otherwise returns <code>false</code> 1944 * @see Window#isAlwaysOnTopSupported 1945 * @see Window#setAlwaysOnTop(boolean) 1946 * @since 1.6 1947 */ 1948 public boolean isAlwaysOnTopSupported() { 1949 return true; 1950 } 1951 1952 /** 1953 * Returns whether the given modality type is supported by this toolkit. If 1954 * a dialog with unsupported modality type is created, then 1955 * <code>Dialog.ModalityType.MODELESS</code> is used instead. 1956 * 1957 * @param modalityType modality type to be checked for support by this toolkit 1958 * 1959 * @return <code>true</code>, if current toolkit supports given modality 1960 * type, <code>false</code> otherwise 1961 * 1962 * @see java.awt.Dialog.ModalityType 1963 * @see java.awt.Dialog#getModalityType 1964 * @see java.awt.Dialog#setModalityType 1965 * 1966 * @since 1.6 1967 */ 1968 public abstract boolean isModalityTypeSupported(Dialog.ModalityType modalityType); 1969 1970 /** 1971 * Returns whether the given modal exclusion type is supported by this 1972 * toolkit. If an unsupported modal exclusion type property is set on a window, 1973 * then <code>Dialog.ModalExclusionType.NO_EXCLUDE</code> is used instead. 1974 * 1975 * @param modalExclusionType modal exclusion type to be checked for support by this toolkit 1976 * 1977 * @return <code>true</code>, if current toolkit supports given modal exclusion 1978 * type, <code>false</code> otherwise 1979 * 1980 * @see java.awt.Dialog.ModalExclusionType 1981 * @see java.awt.Window#getModalExclusionType 1982 * @see java.awt.Window#setModalExclusionType 1983 * 1984 * @since 1.6 1985 */ 1986 public abstract boolean isModalExclusionTypeSupported(Dialog.ModalExclusionType modalExclusionType); 1987 1988 // 8014718: logging has been removed from SunToolkit 1989 1990 private static final int LONG_BITS = 64; 1991 private int[] calls = new int[LONG_BITS]; 1992 private static volatile long enabledOnToolkitMask; 1993 private AWTEventListener eventListener = null; 1994 private WeakHashMap<AWTEventListener, SelectiveAWTEventListener> listener2SelectiveListener = new WeakHashMap<>(); 1995 1996 /* 1997 * Extracts a "pure" AWTEventListener from a AWTEventListenerProxy, 1998 * if the listener is proxied. 1999 */ 2000 static private AWTEventListener deProxyAWTEventListener(AWTEventListener l) 2001 { 2002 AWTEventListener localL = l; 2003 2004 if (localL == null) { 2005 return null; 2006 } 2007 // if user passed in a AWTEventListenerProxy object, extract 2008 // the listener 2009 if (l instanceof AWTEventListenerProxy) { 2010 localL = ((AWTEventListenerProxy)l).getListener(); 2011 } 2012 return localL; 2013 } 2014 2015 /** 2016 * Adds an AWTEventListener to receive all AWTEvents dispatched 2017 * system-wide that conform to the given <code>eventMask</code>. 2018 * <p> 2019 * First, if there is a security manager, its <code>checkPermission</code> 2020 * method is called with an 2021 * <code>AWTPermission("listenToAllAWTEvents")</code> permission. 2022 * This may result in a SecurityException. 2023 * <p> 2024 * <code>eventMask</code> is a bitmask of event types to receive. 2025 * It is constructed by bitwise OR-ing together the event masks 2026 * defined in <code>AWTEvent</code>. 2027 * <p> 2028 * Note: event listener use is not recommended for normal 2029 * application use, but are intended solely to support special 2030 * purpose facilities including support for accessibility, 2031 * event record/playback, and diagnostic tracing. 2032 * 2033 * If listener is null, no exception is thrown and no action is performed. 2034 * 2035 * @param listener the event listener. 2036 * @param eventMask the bitmask of event types to receive 2037 * @throws SecurityException 2038 * if a security manager exists and its 2039 * <code>checkPermission</code> method doesn't allow the operation. 2040 * @see #removeAWTEventListener 2041 * @see #getAWTEventListeners 2042 * @see SecurityManager#checkPermission 2043 * @see java.awt.AWTEvent 2044 * @see java.awt.AWTPermission 2045 * @see java.awt.event.AWTEventListener 2046 * @see java.awt.event.AWTEventListenerProxy 2047 * @since 1.2 2048 */ 2049 public void addAWTEventListener(AWTEventListener listener, long eventMask) { 2050 AWTEventListener localL = deProxyAWTEventListener(listener); 2051 2052 if (localL == null) { 2053 return; 2054 } 2055 SecurityManager security = System.getSecurityManager(); 2056 if (security != null) { 2057 security.checkPermission(SecurityConstants.AWT.ALL_AWT_EVENTS_PERMISSION); 2058 } 2059 synchronized (this) { 2060 SelectiveAWTEventListener selectiveListener = 2061 listener2SelectiveListener.get(localL); 2062 2063 if (selectiveListener == null) { 2064 // Create a new selectiveListener. 2065 selectiveListener = new SelectiveAWTEventListener(localL, 2066 eventMask); 2067 listener2SelectiveListener.put(localL, selectiveListener); 2068 eventListener = ToolkitEventMulticaster.add(eventListener, 2069 selectiveListener); 2070 } 2071 // OR the eventMask into the selectiveListener's event mask. 2072 selectiveListener.orEventMasks(eventMask); 2073 2074 enabledOnToolkitMask |= eventMask; 2075 2076 long mask = eventMask; 2077 for (int i=0; i<LONG_BITS; i++) { 2078 // If no bits are set, break out of loop. 2079 if (mask == 0) { 2080 break; 2081 } 2082 if ((mask & 1L) != 0) { // Always test bit 0. 2083 calls[i]++; 2084 } 2085 mask >>>= 1; // Right shift, fill with zeros on left. 2086 } 2087 } 2088 } 2089 2090 /** 2091 * Removes an AWTEventListener from receiving dispatched AWTEvents. 2092 * <p> 2093 * First, if there is a security manager, its <code>checkPermission</code> 2094 * method is called with an 2095 * <code>AWTPermission("listenToAllAWTEvents")</code> permission. 2096 * This may result in a SecurityException. 2097 * <p> 2098 * Note: event listener use is not recommended for normal 2099 * application use, but are intended solely to support special 2100 * purpose facilities including support for accessibility, 2101 * event record/playback, and diagnostic tracing. 2102 * 2103 * If listener is null, no exception is thrown and no action is performed. 2104 * 2105 * @param listener the event listener. 2106 * @throws SecurityException 2107 * if a security manager exists and its 2108 * <code>checkPermission</code> method doesn't allow the operation. 2109 * @see #addAWTEventListener 2110 * @see #getAWTEventListeners 2111 * @see SecurityManager#checkPermission 2112 * @see java.awt.AWTEvent 2113 * @see java.awt.AWTPermission 2114 * @see java.awt.event.AWTEventListener 2115 * @see java.awt.event.AWTEventListenerProxy 2116 * @since 1.2 2117 */ 2118 public void removeAWTEventListener(AWTEventListener listener) { 2119 AWTEventListener localL = deProxyAWTEventListener(listener); 2120 2121 if (listener == null) { 2122 return; 2123 } 2124 SecurityManager security = System.getSecurityManager(); 2125 if (security != null) { 2126 security.checkPermission(SecurityConstants.AWT.ALL_AWT_EVENTS_PERMISSION); 2127 } 2128 2129 synchronized (this) { 2130 SelectiveAWTEventListener selectiveListener = 2131 listener2SelectiveListener.get(localL); 2132 2133 if (selectiveListener != null) { 2134 listener2SelectiveListener.remove(localL); 2135 int[] listenerCalls = selectiveListener.getCalls(); 2136 for (int i=0; i<LONG_BITS; i++) { 2137 calls[i] -= listenerCalls[i]; 2138 assert calls[i] >= 0: "Negative Listeners count"; 2139 2140 if (calls[i] == 0) { 2141 enabledOnToolkitMask &= ~(1L<<i); 2142 } 2143 } 2144 } 2145 eventListener = ToolkitEventMulticaster.remove(eventListener, 2146 (selectiveListener == null) ? localL : selectiveListener); 2147 } 2148 } 2149 2150 static boolean enabledOnToolkit(long eventMask) { 2151 return (enabledOnToolkitMask & eventMask) != 0; 2152 } 2153 2154 synchronized int countAWTEventListeners(long eventMask) { 2155 int ci = 0; 2156 for (; eventMask != 0; eventMask >>>= 1, ci++) { 2157 } 2158 ci--; 2159 return calls[ci]; 2160 } 2161 /** 2162 * Returns an array of all the <code>AWTEventListener</code>s 2163 * registered on this toolkit. 2164 * If there is a security manager, its {@code checkPermission} 2165 * method is called with an 2166 * {@code AWTPermission("listenToAllAWTEvents")} permission. 2167 * This may result in a SecurityException. 2168 * Listeners can be returned 2169 * within <code>AWTEventListenerProxy</code> objects, which also contain 2170 * the event mask for the given listener. 2171 * Note that listener objects 2172 * added multiple times appear only once in the returned array. 2173 * 2174 * @return all of the <code>AWTEventListener</code>s or an empty 2175 * array if no listeners are currently registered 2176 * @throws SecurityException 2177 * if a security manager exists and its 2178 * <code>checkPermission</code> method doesn't allow the operation. 2179 * @see #addAWTEventListener 2180 * @see #removeAWTEventListener 2181 * @see SecurityManager#checkPermission 2182 * @see java.awt.AWTEvent 2183 * @see java.awt.AWTPermission 2184 * @see java.awt.event.AWTEventListener 2185 * @see java.awt.event.AWTEventListenerProxy 2186 * @since 1.4 2187 */ 2188 public AWTEventListener[] getAWTEventListeners() { 2189 SecurityManager security = System.getSecurityManager(); 2190 if (security != null) { 2191 security.checkPermission(SecurityConstants.AWT.ALL_AWT_EVENTS_PERMISSION); 2192 } 2193 synchronized (this) { 2194 EventListener[] la = ToolkitEventMulticaster.getListeners(eventListener,AWTEventListener.class); 2195 2196 AWTEventListener[] ret = new AWTEventListener[la.length]; 2197 for (int i = 0; i < la.length; i++) { 2198 SelectiveAWTEventListener sael = (SelectiveAWTEventListener)la[i]; 2199 AWTEventListener tempL = sael.getListener(); 2200 //assert tempL is not an AWTEventListenerProxy - we should 2201 // have weeded them all out 2202 // don't want to wrap a proxy inside a proxy 2203 ret[i] = new AWTEventListenerProxy(sael.getEventMask(), tempL); 2204 } 2205 return ret; 2206 } 2207 } 2208 2209 /** 2210 * Returns an array of all the <code>AWTEventListener</code>s 2211 * registered on this toolkit which listen to all of the event 2212 * types specified in the {@code eventMask} argument. 2213 * If there is a security manager, its {@code checkPermission} 2214 * method is called with an 2215 * {@code AWTPermission("listenToAllAWTEvents")} permission. 2216 * This may result in a SecurityException. 2217 * Listeners can be returned 2218 * within <code>AWTEventListenerProxy</code> objects, which also contain 2219 * the event mask for the given listener. 2220 * Note that listener objects 2221 * added multiple times appear only once in the returned array. 2222 * 2223 * @param eventMask the bitmask of event types to listen for 2224 * @return all of the <code>AWTEventListener</code>s registered 2225 * on this toolkit for the specified 2226 * event types, or an empty array if no such listeners 2227 * are currently registered 2228 * @throws SecurityException 2229 * if a security manager exists and its 2230 * <code>checkPermission</code> method doesn't allow the operation. 2231 * @see #addAWTEventListener 2232 * @see #removeAWTEventListener 2233 * @see SecurityManager#checkPermission 2234 * @see java.awt.AWTEvent 2235 * @see java.awt.AWTPermission 2236 * @see java.awt.event.AWTEventListener 2237 * @see java.awt.event.AWTEventListenerProxy 2238 * @since 1.4 2239 */ 2240 public AWTEventListener[] getAWTEventListeners(long eventMask) { 2241 SecurityManager security = System.getSecurityManager(); 2242 if (security != null) { 2243 security.checkPermission(SecurityConstants.AWT.ALL_AWT_EVENTS_PERMISSION); 2244 } 2245 synchronized (this) { 2246 EventListener[] la = ToolkitEventMulticaster.getListeners(eventListener,AWTEventListener.class); 2247 2248 java.util.List<AWTEventListenerProxy> list = new ArrayList<>(la.length); 2249 2250 for (int i = 0; i < la.length; i++) { 2251 SelectiveAWTEventListener sael = (SelectiveAWTEventListener)la[i]; 2252 if ((sael.getEventMask() & eventMask) == eventMask) { 2253 //AWTEventListener tempL = sael.getListener(); 2254 list.add(new AWTEventListenerProxy(sael.getEventMask(), 2255 sael.getListener())); 2256 } 2257 } 2258 return list.toArray(new AWTEventListener[0]); 2259 } 2260 } 2261 2262 /* 2263 * This method notifies any AWTEventListeners that an event 2264 * is about to be dispatched. 2265 * 2266 * @param theEvent the event which will be dispatched. 2267 */ 2268 void notifyAWTEventListeners(AWTEvent theEvent) { 2269 // This is a workaround for headless toolkits. It would be 2270 // better to override this method but it is declared package private. 2271 // "this instanceof" syntax defeats polymorphism. 2272 // --mm, 03/03/00 2273 if (this instanceof HeadlessToolkit) { 2274 ((HeadlessToolkit)this).getUnderlyingToolkit() 2275 .notifyAWTEventListeners(theEvent); 2276 return; 2277 } 2278 2279 AWTEventListener eventListener = this.eventListener; 2280 if (eventListener != null) { 2281 eventListener.eventDispatched(theEvent); 2282 } 2283 } 2284 2285 static private class ToolkitEventMulticaster extends AWTEventMulticaster 2286 implements AWTEventListener { 2287 // Implementation cloned from AWTEventMulticaster. 2288 2289 ToolkitEventMulticaster(AWTEventListener a, AWTEventListener b) { 2290 super(a, b); 2291 } 2292 2293 static AWTEventListener add(AWTEventListener a, 2294 AWTEventListener b) { 2295 if (a == null) return b; 2296 if (b == null) return a; 2297 return new ToolkitEventMulticaster(a, b); 2298 } 2299 2300 static AWTEventListener remove(AWTEventListener l, 2301 AWTEventListener oldl) { 2302 return (AWTEventListener) removeInternal(l, oldl); 2303 } 2304 2305 // #4178589: must overload remove(EventListener) to call our add() 2306 // instead of the static addInternal() so we allocate a 2307 // ToolkitEventMulticaster instead of an AWTEventMulticaster. 2308 // Note: this method is called by AWTEventListener.removeInternal(), 2309 // so its method signature must match AWTEventListener.remove(). 2310 protected EventListener remove(EventListener oldl) { 2311 if (oldl == a) return b; 2312 if (oldl == b) return a; 2313 AWTEventListener a2 = (AWTEventListener)removeInternal(a, oldl); 2314 AWTEventListener b2 = (AWTEventListener)removeInternal(b, oldl); 2315 if (a2 == a && b2 == b) { 2316 return this; // it's not here 2317 } 2318 return add(a2, b2); 2319 } 2320 2321 public void eventDispatched(AWTEvent event) { 2322 ((AWTEventListener)a).eventDispatched(event); 2323 ((AWTEventListener)b).eventDispatched(event); 2324 } 2325 } 2326 2327 private class SelectiveAWTEventListener implements AWTEventListener { 2328 AWTEventListener listener; 2329 private long eventMask; 2330 // This array contains the number of times to call the eventlistener 2331 // for each event type. 2332 int[] calls = new int[Toolkit.LONG_BITS]; 2333 2334 public AWTEventListener getListener() {return listener;} 2335 public long getEventMask() {return eventMask;} 2336 public int[] getCalls() {return calls;} 2337 2338 public void orEventMasks(long mask) { 2339 eventMask |= mask; 2340 // For each event bit set in mask, increment its call count. 2341 for (int i=0; i<Toolkit.LONG_BITS; i++) { 2342 // If no bits are set, break out of loop. 2343 if (mask == 0) { 2344 break; 2345 } 2346 if ((mask & 1L) != 0) { // Always test bit 0. 2347 calls[i]++; 2348 } 2349 mask >>>= 1; // Right shift, fill with zeros on left. 2350 } 2351 } 2352 2353 SelectiveAWTEventListener(AWTEventListener l, long mask) { 2354 listener = l; 2355 eventMask = mask; 2356 } 2357 2358 public void eventDispatched(AWTEvent event) { 2359 long eventBit = 0; // Used to save the bit of the event type. 2360 if (((eventBit = eventMask & AWTEvent.COMPONENT_EVENT_MASK) != 0 && 2361 event.id >= ComponentEvent.COMPONENT_FIRST && 2362 event.id <= ComponentEvent.COMPONENT_LAST) 2363 || ((eventBit = eventMask & AWTEvent.CONTAINER_EVENT_MASK) != 0 && 2364 event.id >= ContainerEvent.CONTAINER_FIRST && 2365 event.id <= ContainerEvent.CONTAINER_LAST) 2366 || ((eventBit = eventMask & AWTEvent.FOCUS_EVENT_MASK) != 0 && 2367 event.id >= FocusEvent.FOCUS_FIRST && 2368 event.id <= FocusEvent.FOCUS_LAST) 2369 || ((eventBit = eventMask & AWTEvent.KEY_EVENT_MASK) != 0 && 2370 event.id >= KeyEvent.KEY_FIRST && 2371 event.id <= KeyEvent.KEY_LAST) 2372 || ((eventBit = eventMask & AWTEvent.MOUSE_WHEEL_EVENT_MASK) != 0 && 2373 event.id == MouseEvent.MOUSE_WHEEL) 2374 || ((eventBit = eventMask & AWTEvent.MOUSE_MOTION_EVENT_MASK) != 0 && 2375 (event.id == MouseEvent.MOUSE_MOVED || 2376 event.id == MouseEvent.MOUSE_DRAGGED)) 2377 || ((eventBit = eventMask & AWTEvent.MOUSE_EVENT_MASK) != 0 && 2378 event.id != MouseEvent.MOUSE_MOVED && 2379 event.id != MouseEvent.MOUSE_DRAGGED && 2380 event.id != MouseEvent.MOUSE_WHEEL && 2381 event.id >= MouseEvent.MOUSE_FIRST && 2382 event.id <= MouseEvent.MOUSE_LAST) 2383 || ((eventBit = eventMask & AWTEvent.WINDOW_EVENT_MASK) != 0 && 2384 (event.id >= WindowEvent.WINDOW_FIRST && 2385 event.id <= WindowEvent.WINDOW_LAST)) 2386 || ((eventBit = eventMask & AWTEvent.ACTION_EVENT_MASK) != 0 && 2387 event.id >= ActionEvent.ACTION_FIRST && 2388 event.id <= ActionEvent.ACTION_LAST) 2389 || ((eventBit = eventMask & AWTEvent.ADJUSTMENT_EVENT_MASK) != 0 && 2390 event.id >= AdjustmentEvent.ADJUSTMENT_FIRST && 2391 event.id <= AdjustmentEvent.ADJUSTMENT_LAST) 2392 || ((eventBit = eventMask & AWTEvent.ITEM_EVENT_MASK) != 0 && 2393 event.id >= ItemEvent.ITEM_FIRST && 2394 event.id <= ItemEvent.ITEM_LAST) 2395 || ((eventBit = eventMask & AWTEvent.TEXT_EVENT_MASK) != 0 && 2396 event.id >= TextEvent.TEXT_FIRST && 2397 event.id <= TextEvent.TEXT_LAST) 2398 || ((eventBit = eventMask & AWTEvent.INPUT_METHOD_EVENT_MASK) != 0 && 2399 event.id >= InputMethodEvent.INPUT_METHOD_FIRST && 2400 event.id <= InputMethodEvent.INPUT_METHOD_LAST) 2401 || ((eventBit = eventMask & AWTEvent.PAINT_EVENT_MASK) != 0 && 2402 event.id >= PaintEvent.PAINT_FIRST && 2403 event.id <= PaintEvent.PAINT_LAST) 2404 || ((eventBit = eventMask & AWTEvent.INVOCATION_EVENT_MASK) != 0 && 2405 event.id >= InvocationEvent.INVOCATION_FIRST && 2406 event.id <= InvocationEvent.INVOCATION_LAST) 2407 || ((eventBit = eventMask & AWTEvent.HIERARCHY_EVENT_MASK) != 0 && 2408 event.id == HierarchyEvent.HIERARCHY_CHANGED) 2409 || ((eventBit = eventMask & AWTEvent.HIERARCHY_BOUNDS_EVENT_MASK) != 0 && 2410 (event.id == HierarchyEvent.ANCESTOR_MOVED || 2411 event.id == HierarchyEvent.ANCESTOR_RESIZED)) 2412 || ((eventBit = eventMask & AWTEvent.WINDOW_STATE_EVENT_MASK) != 0 && 2413 event.id == WindowEvent.WINDOW_STATE_CHANGED) 2414 || ((eventBit = eventMask & AWTEvent.WINDOW_FOCUS_EVENT_MASK) != 0 && 2415 (event.id == WindowEvent.WINDOW_GAINED_FOCUS || 2416 event.id == WindowEvent.WINDOW_LOST_FOCUS)) 2417 || ((eventBit = eventMask & sun.awt.SunToolkit.GRAB_EVENT_MASK) != 0 && 2418 (event instanceof sun.awt.UngrabEvent))) { 2419 // Get the index of the call count for this event type. 2420 // Instead of using Math.log(...) we will calculate it with 2421 // bit shifts. That's what previous implementation looked like: 2422 // 2423 // int ci = (int) (Math.log(eventBit)/Math.log(2)); 2424 int ci = 0; 2425 for (long eMask = eventBit; eMask != 0; eMask >>>= 1, ci++) { 2426 } 2427 ci--; 2428 // Call the listener as many times as it was added for this 2429 // event type. 2430 for (int i=0; i<calls[ci]; i++) { 2431 listener.eventDispatched(event); 2432 } 2433 } 2434 } 2435 } 2436 2437 /** 2438 * Returns a map of visual attributes for the abstract level description 2439 * of the given input method highlight, or null if no mapping is found. 2440 * The style field of the input method highlight is ignored. The map 2441 * returned is unmodifiable. 2442 * @param highlight input method highlight 2443 * @return style attribute map, or <code>null</code> 2444 * @exception HeadlessException if 2445 * <code>GraphicsEnvironment.isHeadless</code> returns true 2446 * @see java.awt.GraphicsEnvironment#isHeadless 2447 * @since 1.3 2448 */ 2449 public abstract Map<java.awt.font.TextAttribute,?> 2450 mapInputMethodHighlight(InputMethodHighlight highlight) 2451 throws HeadlessException; 2452 2453 private static PropertyChangeSupport createPropertyChangeSupport(Toolkit toolkit) { 2454 if (toolkit instanceof SunToolkit || toolkit instanceof HeadlessToolkit) { 2455 return new DesktopPropertyChangeSupport(toolkit); 2456 } else { 2457 return new PropertyChangeSupport(toolkit); 2458 } 2459 } 2460 2461 @SuppressWarnings("serial") 2462 private static class DesktopPropertyChangeSupport extends PropertyChangeSupport { 2463 2464 private static final StringBuilder PROP_CHANGE_SUPPORT_KEY = 2465 new StringBuilder("desktop property change support key"); 2466 private final Object source; 2467 2468 public DesktopPropertyChangeSupport(Object sourceBean) { 2469 super(sourceBean); 2470 source = sourceBean; 2471 } 2472 2473 @Override 2474 public synchronized void addPropertyChangeListener( 2475 String propertyName, 2476 PropertyChangeListener listener) 2477 { 2478 PropertyChangeSupport pcs = (PropertyChangeSupport) 2479 AppContext.getAppContext().get(PROP_CHANGE_SUPPORT_KEY); 2480 if (null == pcs) { 2481 pcs = new PropertyChangeSupport(source); 2482 AppContext.getAppContext().put(PROP_CHANGE_SUPPORT_KEY, pcs); 2483 } 2484 pcs.addPropertyChangeListener(propertyName, listener); 2485 } 2486 2487 @Override 2488 public synchronized void removePropertyChangeListener( 2489 String propertyName, 2490 PropertyChangeListener listener) 2491 { 2492 PropertyChangeSupport pcs = (PropertyChangeSupport) 2493 AppContext.getAppContext().get(PROP_CHANGE_SUPPORT_KEY); 2494 if (null != pcs) { 2495 pcs.removePropertyChangeListener(propertyName, listener); 2496 } 2497 } 2498 2499 @Override 2500 public synchronized PropertyChangeListener[] getPropertyChangeListeners() 2501 { 2502 PropertyChangeSupport pcs = (PropertyChangeSupport) 2503 AppContext.getAppContext().get(PROP_CHANGE_SUPPORT_KEY); 2504 if (null != pcs) { 2505 return pcs.getPropertyChangeListeners(); 2506 } else { 2507 return new PropertyChangeListener[0]; 2508 } 2509 } 2510 2511 @Override 2512 public synchronized PropertyChangeListener[] getPropertyChangeListeners(String propertyName) 2513 { 2514 PropertyChangeSupport pcs = (PropertyChangeSupport) 2515 AppContext.getAppContext().get(PROP_CHANGE_SUPPORT_KEY); 2516 if (null != pcs) { 2517 return pcs.getPropertyChangeListeners(propertyName); 2518 } else { 2519 return new PropertyChangeListener[0]; 2520 } 2521 } 2522 2523 @Override 2524 public synchronized void addPropertyChangeListener(PropertyChangeListener listener) { 2525 PropertyChangeSupport pcs = (PropertyChangeSupport) 2526 AppContext.getAppContext().get(PROP_CHANGE_SUPPORT_KEY); 2527 if (null == pcs) { 2528 pcs = new PropertyChangeSupport(source); 2529 AppContext.getAppContext().put(PROP_CHANGE_SUPPORT_KEY, pcs); 2530 } 2531 pcs.addPropertyChangeListener(listener); 2532 } 2533 2534 @Override 2535 public synchronized void removePropertyChangeListener(PropertyChangeListener listener) { 2536 PropertyChangeSupport pcs = (PropertyChangeSupport) 2537 AppContext.getAppContext().get(PROP_CHANGE_SUPPORT_KEY); 2538 if (null != pcs) { 2539 pcs.removePropertyChangeListener(listener); 2540 } 2541 } 2542 2543 /* 2544 * we do expect that all other fireXXX() methods of java.beans.PropertyChangeSupport 2545 * use this method. If this will be changed we will need to change this class. 2546 */ 2547 @Override 2548 public void firePropertyChange(final PropertyChangeEvent evt) { 2549 Object oldValue = evt.getOldValue(); 2550 Object newValue = evt.getNewValue(); 2551 String propertyName = evt.getPropertyName(); 2552 if (oldValue != null && newValue != null && oldValue.equals(newValue)) { 2553 return; 2554 } 2555 Runnable updater = new Runnable() { 2556 public void run() { 2557 PropertyChangeSupport pcs = (PropertyChangeSupport) 2558 AppContext.getAppContext().get(PROP_CHANGE_SUPPORT_KEY); 2559 if (null != pcs) { 2560 pcs.firePropertyChange(evt); 2561 } 2562 } 2563 }; 2564 final AppContext currentAppContext = AppContext.getAppContext(); 2565 for (AppContext appContext : AppContext.getAppContexts()) { 2566 if (null == appContext || appContext.isDisposed()) { 2567 continue; 2568 } 2569 if (currentAppContext == appContext) { 2570 updater.run(); 2571 } else { 2572 final PeerEvent e = new PeerEvent(source, updater, PeerEvent.ULTIMATE_PRIORITY_EVENT); 2573 SunToolkit.postEvent(appContext, e); 2574 } 2575 } 2576 } 2577 } 2578 2579 /** 2580 * Reports whether events from extra mouse buttons are allowed to be processed and posted into 2581 * {@code EventQueue}. 2582 * <br> 2583 * To change the returned value it is necessary to set the {@code sun.awt.enableExtraMouseButtons} 2584 * property before the {@code Toolkit} class initialization. This setting could be done on the application 2585 * startup by the following command: 2586 * <pre> 2587 * java -Dsun.awt.enableExtraMouseButtons=false Application 2588 * </pre> 2589 * Alternatively, the property could be set in the application by using the following code: 2590 * <pre> 2591 * System.setProperty("sun.awt.enableExtraMouseButtons", "true"); 2592 * </pre> 2593 * before the {@code Toolkit} class initialization. 2594 * If not set by the time of the {@code Toolkit} class initialization, this property will be 2595 * initialized with {@code true}. 2596 * Changing this value after the {@code Toolkit} class initialization will have no effect. 2597 * <p> 2598 * @exception HeadlessException if GraphicsEnvironment.isHeadless() returns true 2599 * @return {@code true} if events from extra mouse buttons are allowed to be processed and posted; 2600 * {@code false} otherwise 2601 * @see System#getProperty(String propertyName) 2602 * @see System#setProperty(String propertyName, String value) 2603 * @see java.awt.EventQueue 2604 * @since 1.7 2605 */ 2606 public boolean areExtraMouseButtonsEnabled() throws HeadlessException { 2607 GraphicsEnvironment.checkHeadless(); 2608 2609 return Toolkit.getDefaultToolkit().areExtraMouseButtonsEnabled(); 2610 } 2611 }