1 /* 2 * Copyright (c) 1995, 2017, 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.awt.event.*; 30 import java.awt.peer.*; 31 import java.awt.im.InputMethodHighlight; 32 import java.awt.image.ImageObserver; 33 import java.awt.image.ImageProducer; 34 import java.awt.image.ColorModel; 35 import java.awt.datatransfer.Clipboard; 36 import java.awt.dnd.DragSource; 37 import java.awt.dnd.DragGestureRecognizer; 38 import java.awt.dnd.DragGestureEvent; 39 import java.awt.dnd.DragGestureListener; 40 import java.awt.dnd.InvalidDnDOperationException; 41 import java.awt.dnd.peer.DragSourceContextPeer; 42 import java.net.URL; 43 import java.io.File; 44 import java.io.FileInputStream; 45 46 import java.util.*; 47 import java.beans.PropertyChangeListener; 48 import java.beans.PropertyChangeSupport; 49 import sun.awt.AppContext; 50 51 import sun.awt.HeadlessToolkit; 52 import sun.awt.NullComponentPeer; 53 import sun.awt.PeerEvent; 54 import sun.awt.SunToolkit; 55 import sun.awt.AWTAccessor; 56 import sun.security.util.SecurityConstants; 57 58 import sun.util.CoreResourceBundleControl; 59 60 /** 61 * This class is the abstract superclass of all actual 62 * implementations of the Abstract Window Toolkit. Subclasses of 63 * the <code>Toolkit</code> class are used to bind the various components 64 * to particular native toolkit implementations. 65 * <p> 66 * Many GUI events may be delivered to user 67 * asynchronously, if the opposite is not specified explicitly. 68 * As well as 69 * many GUI operations may be performed asynchronously. 70 * This fact means that if the state of a component is set, and then 71 * the state immediately queried, the returned value may not yet 72 * reflect the requested change. This behavior includes, but is not 73 * limited to: 74 * <ul> 75 * <li>Scrolling to a specified position. 76 * <br>For example, calling <code>ScrollPane.setScrollPosition</code> 77 * and then <code>getScrollPosition</code> may return an incorrect 78 * value if the original request has not yet been processed. 79 * 80 * <li>Moving the focus from one component to another. 81 * <br>For more information, see 82 * <a href="https://docs.oracle.com/javase/tutorial/uiswing/misc/focus.html#transferTiming">Timing 83 * Focus Transfers</a>, a section in 84 * <a href="http://java.sun.com/docs/books/tutorial/uiswing/">The Swing 85 * Tutorial</a>. 86 * 87 * <li>Making a top-level container visible. 88 * <br>Calling <code>setVisible(true)</code> on a <code>Window</code>, 89 * <code>Frame</code> or <code>Dialog</code> may occur 90 * asynchronously. 91 * 92 * <li>Setting the size or location of a top-level container. 93 * <br>Calls to <code>setSize</code>, <code>setBounds</code> or 94 * <code>setLocation</code> on a <code>Window</code>, 95 * <code>Frame</code> or <code>Dialog</code> are forwarded 96 * to the underlying window management system and may be 97 * ignored or modified. See {@link java.awt.Window} for 98 * more information. 99 * </ul> 100 * <p> 101 * Most applications should not call any of the methods in this 102 * class directly. The methods defined by <code>Toolkit</code> are 103 * the "glue" that joins the platform-independent classes in the 104 * <code>java.awt</code> package with their counterparts in 105 * <code>java.awt.peer</code>. Some methods defined by 106 * <code>Toolkit</code> query the native operating system directly. 107 * 108 * @author Sami Shaio 109 * @author Arthur van Hoff 110 * @author Fred Ecks 111 * @since JDK1.0 112 */ 113 public abstract class Toolkit { 114 115 /** 116 * Creates this toolkit's implementation of the <code>Desktop</code> 117 * using the specified peer interface. 118 * @param target the desktop to be implemented 119 * @return this toolkit's implementation of the <code>Desktop</code> 120 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 121 * returns true 122 * @see java.awt.GraphicsEnvironment#isHeadless 123 * @see java.awt.Desktop 124 * @see java.awt.peer.DesktopPeer 125 * @since 1.6 126 */ createDesktopPeer(Desktop target)127 protected abstract DesktopPeer createDesktopPeer(Desktop target) 128 throws HeadlessException; 129 130 131 /** 132 * Creates this toolkit's implementation of <code>Button</code> using 133 * the specified peer interface. 134 * @param target the button to be implemented. 135 * @return this toolkit's implementation of <code>Button</code>. 136 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 137 * returns true 138 * @see java.awt.GraphicsEnvironment#isHeadless 139 * @see java.awt.Button 140 * @see java.awt.peer.ButtonPeer 141 */ createButton(Button target)142 protected abstract ButtonPeer createButton(Button target) 143 throws HeadlessException; 144 145 /** 146 * Creates this toolkit's implementation of <code>TextField</code> using 147 * the specified peer interface. 148 * @param target the text field to be implemented. 149 * @return this toolkit's implementation of <code>TextField</code>. 150 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 151 * returns true 152 * @see java.awt.GraphicsEnvironment#isHeadless 153 * @see java.awt.TextField 154 * @see java.awt.peer.TextFieldPeer 155 */ createTextField(TextField target)156 protected abstract TextFieldPeer createTextField(TextField target) 157 throws HeadlessException; 158 159 /** 160 * Creates this toolkit's implementation of <code>Label</code> using 161 * the specified peer interface. 162 * @param target the label to be implemented. 163 * @return this toolkit's implementation of <code>Label</code>. 164 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 165 * returns true 166 * @see java.awt.GraphicsEnvironment#isHeadless 167 * @see java.awt.Label 168 * @see java.awt.peer.LabelPeer 169 */ createLabel(Label target)170 protected abstract LabelPeer createLabel(Label target) 171 throws HeadlessException; 172 173 /** 174 * Creates this toolkit's implementation of <code>List</code> using 175 * the specified peer interface. 176 * @param target the list to be implemented. 177 * @return this toolkit's implementation of <code>List</code>. 178 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 179 * returns true 180 * @see java.awt.GraphicsEnvironment#isHeadless 181 * @see java.awt.List 182 * @see java.awt.peer.ListPeer 183 */ createList(java.awt.List target)184 protected abstract ListPeer createList(java.awt.List target) 185 throws HeadlessException; 186 187 /** 188 * Creates this toolkit's implementation of <code>Checkbox</code> using 189 * the specified peer interface. 190 * @param target the check box to be implemented. 191 * @return this toolkit's implementation of <code>Checkbox</code>. 192 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 193 * returns true 194 * @see java.awt.GraphicsEnvironment#isHeadless 195 * @see java.awt.Checkbox 196 * @see java.awt.peer.CheckboxPeer 197 */ createCheckbox(Checkbox target)198 protected abstract CheckboxPeer createCheckbox(Checkbox target) 199 throws HeadlessException; 200 201 /** 202 * Creates this toolkit's implementation of <code>Scrollbar</code> using 203 * the specified peer interface. 204 * @param target the scroll bar to be implemented. 205 * @return this toolkit's implementation of <code>Scrollbar</code>. 206 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 207 * returns true 208 * @see java.awt.GraphicsEnvironment#isHeadless 209 * @see java.awt.Scrollbar 210 * @see java.awt.peer.ScrollbarPeer 211 */ createScrollbar(Scrollbar target)212 protected abstract ScrollbarPeer createScrollbar(Scrollbar target) 213 throws HeadlessException; 214 215 /** 216 * Creates this toolkit's implementation of <code>ScrollPane</code> using 217 * the specified peer interface. 218 * @param target the scroll pane to be implemented. 219 * @return this toolkit's implementation of <code>ScrollPane</code>. 220 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 221 * returns true 222 * @see java.awt.GraphicsEnvironment#isHeadless 223 * @see java.awt.ScrollPane 224 * @see java.awt.peer.ScrollPanePeer 225 * @since JDK1.1 226 */ createScrollPane(ScrollPane target)227 protected abstract ScrollPanePeer createScrollPane(ScrollPane target) 228 throws HeadlessException; 229 230 /** 231 * Creates this toolkit's implementation of <code>TextArea</code> using 232 * the specified peer interface. 233 * @param target the text area to be implemented. 234 * @return this toolkit's implementation of <code>TextArea</code>. 235 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 236 * returns true 237 * @see java.awt.GraphicsEnvironment#isHeadless 238 * @see java.awt.TextArea 239 * @see java.awt.peer.TextAreaPeer 240 */ createTextArea(TextArea target)241 protected abstract TextAreaPeer createTextArea(TextArea target) 242 throws HeadlessException; 243 244 /** 245 * Creates this toolkit's implementation of <code>Choice</code> using 246 * the specified peer interface. 247 * @param target the choice to be implemented. 248 * @return this toolkit's implementation of <code>Choice</code>. 249 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 250 * returns true 251 * @see java.awt.GraphicsEnvironment#isHeadless 252 * @see java.awt.Choice 253 * @see java.awt.peer.ChoicePeer 254 */ createChoice(Choice target)255 protected abstract ChoicePeer createChoice(Choice target) 256 throws HeadlessException; 257 258 /** 259 * Creates this toolkit's implementation of <code>Frame</code> using 260 * the specified peer interface. 261 * @param target the frame to be implemented. 262 * @return this toolkit's implementation of <code>Frame</code>. 263 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 264 * returns true 265 * @see java.awt.GraphicsEnvironment#isHeadless 266 * @see java.awt.Frame 267 * @see java.awt.peer.FramePeer 268 */ createFrame(Frame target)269 protected abstract FramePeer createFrame(Frame target) 270 throws HeadlessException; 271 272 /** 273 * Creates this toolkit's implementation of <code>Canvas</code> using 274 * the specified peer interface. 275 * @param target the canvas to be implemented. 276 * @return this toolkit's implementation of <code>Canvas</code>. 277 * @see java.awt.Canvas 278 * @see java.awt.peer.CanvasPeer 279 */ createCanvas(Canvas target)280 protected abstract CanvasPeer createCanvas(Canvas target); 281 282 /** 283 * Creates this toolkit's implementation of <code>Panel</code> using 284 * the specified peer interface. 285 * @param target the panel to be implemented. 286 * @return this toolkit's implementation of <code>Panel</code>. 287 * @see java.awt.Panel 288 * @see java.awt.peer.PanelPeer 289 */ createPanel(Panel target)290 protected abstract PanelPeer createPanel(Panel target); 291 292 /** 293 * Creates this toolkit's implementation of <code>Window</code> using 294 * the specified peer interface. 295 * @param target the window to be implemented. 296 * @return this toolkit's implementation of <code>Window</code>. 297 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 298 * returns true 299 * @see java.awt.GraphicsEnvironment#isHeadless 300 * @see java.awt.Window 301 * @see java.awt.peer.WindowPeer 302 */ createWindow(Window target)303 protected abstract WindowPeer createWindow(Window target) 304 throws HeadlessException; 305 306 /** 307 * Creates this toolkit's implementation of <code>Dialog</code> using 308 * the specified peer interface. 309 * @param target the dialog to be implemented. 310 * @return this toolkit's implementation of <code>Dialog</code>. 311 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 312 * returns true 313 * @see java.awt.GraphicsEnvironment#isHeadless 314 * @see java.awt.Dialog 315 * @see java.awt.peer.DialogPeer 316 */ createDialog(Dialog target)317 protected abstract DialogPeer createDialog(Dialog target) 318 throws HeadlessException; 319 320 /** 321 * Creates this toolkit's implementation of <code>MenuBar</code> using 322 * the specified peer interface. 323 * @param target the menu bar to be implemented. 324 * @return this toolkit's implementation of <code>MenuBar</code>. 325 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 326 * returns true 327 * @see java.awt.GraphicsEnvironment#isHeadless 328 * @see java.awt.MenuBar 329 * @see java.awt.peer.MenuBarPeer 330 */ createMenuBar(MenuBar target)331 protected abstract MenuBarPeer createMenuBar(MenuBar target) 332 throws HeadlessException; 333 334 /** 335 * Creates this toolkit's implementation of <code>Menu</code> using 336 * the specified peer interface. 337 * @param target the menu to be implemented. 338 * @return this toolkit's implementation of <code>Menu</code>. 339 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 340 * returns true 341 * @see java.awt.GraphicsEnvironment#isHeadless 342 * @see java.awt.Menu 343 * @see java.awt.peer.MenuPeer 344 */ createMenu(Menu target)345 protected abstract MenuPeer createMenu(Menu target) 346 throws HeadlessException; 347 348 /** 349 * Creates this toolkit's implementation of <code>PopupMenu</code> using 350 * the specified peer interface. 351 * @param target the popup menu to be implemented. 352 * @return this toolkit's implementation of <code>PopupMenu</code>. 353 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 354 * returns true 355 * @see java.awt.GraphicsEnvironment#isHeadless 356 * @see java.awt.PopupMenu 357 * @see java.awt.peer.PopupMenuPeer 358 * @since JDK1.1 359 */ createPopupMenu(PopupMenu target)360 protected abstract PopupMenuPeer createPopupMenu(PopupMenu target) 361 throws HeadlessException; 362 363 /** 364 * Creates this toolkit's implementation of <code>MenuItem</code> using 365 * the specified peer interface. 366 * @param target the menu item to be implemented. 367 * @return this toolkit's implementation of <code>MenuItem</code>. 368 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 369 * returns true 370 * @see java.awt.GraphicsEnvironment#isHeadless 371 * @see java.awt.MenuItem 372 * @see java.awt.peer.MenuItemPeer 373 */ createMenuItem(MenuItem target)374 protected abstract MenuItemPeer createMenuItem(MenuItem target) 375 throws HeadlessException; 376 377 /** 378 * Creates this toolkit's implementation of <code>FileDialog</code> using 379 * the specified peer interface. 380 * @param target the file dialog to be implemented. 381 * @return this toolkit's implementation of <code>FileDialog</code>. 382 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 383 * returns true 384 * @see java.awt.GraphicsEnvironment#isHeadless 385 * @see java.awt.FileDialog 386 * @see java.awt.peer.FileDialogPeer 387 */ createFileDialog(FileDialog target)388 protected abstract FileDialogPeer createFileDialog(FileDialog target) 389 throws HeadlessException; 390 391 /** 392 * Creates this toolkit's implementation of <code>CheckboxMenuItem</code> using 393 * the specified peer interface. 394 * @param target the checkbox menu item to be implemented. 395 * @return this toolkit's implementation of <code>CheckboxMenuItem</code>. 396 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 397 * returns true 398 * @see java.awt.GraphicsEnvironment#isHeadless 399 * @see java.awt.CheckboxMenuItem 400 * @see java.awt.peer.CheckboxMenuItemPeer 401 */ createCheckboxMenuItem( CheckboxMenuItem target)402 protected abstract CheckboxMenuItemPeer createCheckboxMenuItem( 403 CheckboxMenuItem target) throws HeadlessException; 404 405 /** 406 * Obtains this toolkit's implementation of helper class for 407 * <code>MouseInfo</code> operations. 408 * @return this toolkit's implementation of helper for <code>MouseInfo</code> 409 * @throws UnsupportedOperationException if this operation is not implemented 410 * @see java.awt.peer.MouseInfoPeer 411 * @see java.awt.MouseInfo 412 * @since 1.5 413 */ getMouseInfoPeer()414 protected MouseInfoPeer getMouseInfoPeer() { 415 throw new UnsupportedOperationException("Not implemented"); 416 } 417 418 private static LightweightPeer lightweightMarker; 419 420 /** 421 * Creates a peer for a component or container. This peer is windowless 422 * and allows the Component and Container classes to be extended directly 423 * to create windowless components that are defined entirely in java. 424 * 425 * @param target The Component to be created. 426 */ createComponent(Component target)427 protected LightweightPeer createComponent(Component target) { 428 if (lightweightMarker == null) { 429 lightweightMarker = new NullComponentPeer(); 430 } 431 return lightweightMarker; 432 } 433 434 /** 435 * Creates this toolkit's implementation of <code>Font</code> using 436 * the specified peer interface. 437 * @param name the font to be implemented 438 * @param style the style of the font, such as <code>PLAIN</code>, 439 * <code>BOLD</code>, <code>ITALIC</code>, or a combination 440 * @return this toolkit's implementation of <code>Font</code> 441 * @see java.awt.Font 442 * @see java.awt.peer.FontPeer 443 * @see java.awt.GraphicsEnvironment#getAllFonts 444 * @deprecated see java.awt.GraphicsEnvironment#getAllFonts 445 */ 446 @Deprecated getFontPeer(String name, int style)447 protected abstract FontPeer getFontPeer(String name, int style); 448 449 // The following method is called by the private method 450 // <code>updateSystemColors</code> in <code>SystemColor</code>. 451 452 /** 453 * Fills in the integer array that is supplied as an argument 454 * with the current system color values. 455 * 456 * @param systemColors an integer array. 457 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 458 * returns true 459 * @see java.awt.GraphicsEnvironment#isHeadless 460 * @since JDK1.1 461 */ loadSystemColors(int[] systemColors)462 protected void loadSystemColors(int[] systemColors) 463 throws HeadlessException { 464 GraphicsEnvironment.checkHeadless(); 465 } 466 467 /** 468 * Controls whether the layout of Containers is validated dynamically 469 * during resizing, or statically, after resizing is complete. 470 * Use {@code isDynamicLayoutActive()} to detect if this feature enabled 471 * in this program and is supported by this operating system 472 * and/or window manager. 473 * Note that this feature is supported not on all platforms, and 474 * conversely, that this feature cannot be turned off on some platforms. 475 * On these platforms where dynamic layout during resizing is not supported 476 * (or is always supported), setting this property has no effect. 477 * Note that this feature can be set or unset as a property of the 478 * operating system or window manager on some platforms. On such 479 * platforms, the dynamic resize property must be set at the operating 480 * system or window manager level before this method can take effect. 481 * This method does not change support or settings of the underlying 482 * operating system or 483 * window manager. The OS/WM support can be 484 * queried using getDesktopProperty("awt.dynamicLayoutSupported") method. 485 * 486 * @param dynamic If true, Containers should re-layout their 487 * components as the Container is being resized. If false, 488 * the layout will be validated after resizing is completed. 489 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 490 * returns true 491 * @see #isDynamicLayoutSet() 492 * @see #isDynamicLayoutActive() 493 * @see #getDesktopProperty(String propertyName) 494 * @see java.awt.GraphicsEnvironment#isHeadless 495 * @since 1.4 496 */ setDynamicLayout(final boolean dynamic)497 public void setDynamicLayout(final boolean dynamic) 498 throws HeadlessException { 499 GraphicsEnvironment.checkHeadless(); 500 if (this != getDefaultToolkit()) { 501 getDefaultToolkit().setDynamicLayout(dynamic); 502 } 503 } 504 505 /** 506 * Returns whether the layout of Containers is validated dynamically 507 * during resizing, or statically, after resizing is complete. 508 * Note: this method returns the value that was set programmatically; 509 * it does not reflect support at the level of the operating system 510 * or window manager for dynamic layout on resizing, or the current 511 * operating system or window manager settings. The OS/WM support can 512 * be queried using getDesktopProperty("awt.dynamicLayoutSupported"). 513 * 514 * @return true if validation of Containers is done dynamically, 515 * false if validation is done after resizing is finished. 516 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 517 * returns true 518 * @see #setDynamicLayout(boolean dynamic) 519 * @see #isDynamicLayoutActive() 520 * @see #getDesktopProperty(String propertyName) 521 * @see java.awt.GraphicsEnvironment#isHeadless 522 * @since 1.4 523 */ isDynamicLayoutSet()524 protected boolean isDynamicLayoutSet() 525 throws HeadlessException { 526 GraphicsEnvironment.checkHeadless(); 527 528 if (this != Toolkit.getDefaultToolkit()) { 529 return Toolkit.getDefaultToolkit().isDynamicLayoutSet(); 530 } else { 531 return false; 532 } 533 } 534 535 /** 536 * Returns whether dynamic layout of Containers on resize is 537 * currently active (both set in program 538 *( {@code isDynamicLayoutSet()} ) 539 *, and supported 540 * by the underlying operating system and/or window manager). 541 * If dynamic layout is currently inactive then Containers 542 * re-layout their components when resizing is completed. As a result 543 * the {@code Component.validate()} method will be invoked only 544 * once per resize. 545 * If dynamic layout is currently active then Containers 546 * re-layout their components on every native resize event and 547 * the {@code validate()} method will be invoked each time. 548 * The OS/WM support can be queried using 549 * the getDesktopProperty("awt.dynamicLayoutSupported") method. 550 * 551 * @return true if dynamic layout of Containers on resize is 552 * currently active, false otherwise. 553 * @exception HeadlessException if the GraphicsEnvironment.isHeadless() 554 * method returns true 555 * @see #setDynamicLayout(boolean dynamic) 556 * @see #isDynamicLayoutSet() 557 * @see #getDesktopProperty(String propertyName) 558 * @see java.awt.GraphicsEnvironment#isHeadless 559 * @since 1.4 560 */ isDynamicLayoutActive()561 public boolean isDynamicLayoutActive() 562 throws HeadlessException { 563 GraphicsEnvironment.checkHeadless(); 564 565 if (this != Toolkit.getDefaultToolkit()) { 566 return Toolkit.getDefaultToolkit().isDynamicLayoutActive(); 567 } else { 568 return false; 569 } 570 } 571 572 /** 573 * Gets the size of the screen. On systems with multiple displays, the 574 * primary display is used. Multi-screen aware display dimensions are 575 * available from <code>GraphicsConfiguration</code> and 576 * <code>GraphicsDevice</code>. 577 * @return the size of this toolkit's screen, in pixels. 578 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 579 * returns true 580 * @see java.awt.GraphicsConfiguration#getBounds 581 * @see java.awt.GraphicsDevice#getDisplayMode 582 * @see java.awt.GraphicsEnvironment#isHeadless 583 */ getScreenSize()584 public abstract Dimension getScreenSize() 585 throws HeadlessException; 586 587 /** 588 * Returns the screen resolution in dots-per-inch. 589 * @return this toolkit's screen resolution, in dots-per-inch. 590 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 591 * returns true 592 * @see java.awt.GraphicsEnvironment#isHeadless 593 */ getScreenResolution()594 public abstract int getScreenResolution() 595 throws HeadlessException; 596 597 /** 598 * Gets the insets of the screen. 599 * @param gc a <code>GraphicsConfiguration</code> 600 * @return the insets of this toolkit's screen, in pixels. 601 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 602 * returns true 603 * @see java.awt.GraphicsEnvironment#isHeadless 604 * @since 1.4 605 */ getScreenInsets(GraphicsConfiguration gc)606 public Insets getScreenInsets(GraphicsConfiguration gc) 607 throws HeadlessException { 608 GraphicsEnvironment.checkHeadless(); 609 if (this != Toolkit.getDefaultToolkit()) { 610 return Toolkit.getDefaultToolkit().getScreenInsets(gc); 611 } else { 612 return new Insets(0, 0, 0, 0); 613 } 614 } 615 616 /** 617 * Determines the color model of this toolkit's screen. 618 * <p> 619 * <code>ColorModel</code> is an abstract class that 620 * encapsulates the ability to translate between the 621 * pixel values of an image and its red, green, blue, 622 * and alpha components. 623 * <p> 624 * This toolkit method is called by the 625 * <code>getColorModel</code> method 626 * of the <code>Component</code> class. 627 * @return the color model of this toolkit's screen. 628 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 629 * returns true 630 * @see java.awt.GraphicsEnvironment#isHeadless 631 * @see java.awt.image.ColorModel 632 * @see java.awt.Component#getColorModel 633 */ getColorModel()634 public abstract ColorModel getColorModel() 635 throws HeadlessException; 636 637 /** 638 * Returns the names of the available fonts in this toolkit.<p> 639 * For 1.1, the following font names are deprecated (the replacement 640 * name follows): 641 * <ul> 642 * <li>TimesRoman (use Serif) 643 * <li>Helvetica (use SansSerif) 644 * <li>Courier (use Monospaced) 645 * </ul><p> 646 * The ZapfDingbats fontname is also deprecated in 1.1 but the characters 647 * are defined in Unicode starting at 0x2700, and as of 1.1 Java supports 648 * those characters. 649 * @return the names of the available fonts in this toolkit. 650 * @deprecated see {@link java.awt.GraphicsEnvironment#getAvailableFontFamilyNames()} 651 * @see java.awt.GraphicsEnvironment#getAvailableFontFamilyNames() 652 */ 653 @Deprecated getFontList()654 public abstract String[] getFontList(); 655 656 /** 657 * Gets the screen device metrics for rendering of the font. 658 * @param font a font 659 * @return the screen metrics of the specified font in this toolkit 660 * @deprecated As of JDK version 1.2, replaced by the <code>Font</code> 661 * method <code>getLineMetrics</code>. 662 * @see java.awt.font.LineMetrics 663 * @see java.awt.Font#getLineMetrics 664 * @see java.awt.GraphicsEnvironment#getScreenDevices 665 */ 666 @Deprecated getFontMetrics(Font font)667 public abstract FontMetrics getFontMetrics(Font font); 668 669 /** 670 * Synchronizes this toolkit's graphics state. Some window systems 671 * may do buffering of graphics events. 672 * <p> 673 * This method ensures that the display is up-to-date. It is useful 674 * for animation. 675 */ sync()676 public abstract void sync(); 677 678 /** 679 * The default toolkit. 680 */ 681 private static Toolkit toolkit; 682 683 /** 684 * Used internally by the assistive technologies functions; set at 685 * init time and used at load time 686 */ 687 private static String atNames; 688 689 /** 690 * Initializes properties related to assistive technologies. 691 * These properties are used both in the loadAssistiveProperties() 692 * function below, as well as other classes in the jdk that depend 693 * on the properties (such as the use of the screen_magnifier_present 694 * property in Java2D hardware acceleration initialization). The 695 * initialization of the properties must be done before the platform- 696 * specific Toolkit class is instantiated so that all necessary 697 * properties are set up properly before any classes dependent upon them 698 * are initialized. 699 */ initAssistiveTechnologies()700 private static void initAssistiveTechnologies() { 701 702 // Get accessibility properties 703 final String sep = File.separator; 704 final Properties properties = new Properties(); 705 706 707 atNames = java.security.AccessController.doPrivileged( 708 new java.security.PrivilegedAction<String>() { 709 public String run() { 710 711 // Try loading the per-user accessibility properties file. 712 try { 713 File propsFile = new File( 714 System.getProperty("user.home") + 715 sep + ".accessibility.properties"); 716 FileInputStream in = 717 new FileInputStream(propsFile); 718 719 // Inputstream has been buffered in Properties class 720 properties.load(in); 721 in.close(); 722 } catch (Exception e) { 723 // Per-user accessibility properties file does not exist 724 } 725 726 // Try loading the system-wide accessibility properties 727 // file only if a per-user accessibility properties 728 // file does not exist or is empty. 729 if (properties.size() == 0) { 730 try { 731 File propsFile = new File( 732 System.getProperty("java.home") + sep + "lib" + 733 sep + "accessibility.properties"); 734 FileInputStream in = 735 new FileInputStream(propsFile); 736 737 // Inputstream has been buffered in Properties class 738 properties.load(in); 739 in.close(); 740 } catch (Exception e) { 741 // System-wide accessibility properties file does 742 // not exist; 743 } 744 } 745 746 // Get whether a screen magnifier is present. First check 747 // the system property and then check the properties file. 748 String magPresent = System.getProperty("javax.accessibility.screen_magnifier_present"); 749 if (magPresent == null) { 750 magPresent = properties.getProperty("screen_magnifier_present", null); 751 if (magPresent != null) { 752 System.setProperty("javax.accessibility.screen_magnifier_present", magPresent); 753 } 754 } 755 756 // Get the names of any assistive technolgies to load. First 757 // check the system property and then check the properties 758 // file. 759 String classNames = System.getProperty("javax.accessibility.assistive_technologies"); 760 if (classNames == null) { 761 classNames = properties.getProperty("assistive_technologies", null); 762 if (classNames != null) { 763 System.setProperty("javax.accessibility.assistive_technologies", classNames); 764 } 765 } 766 return classNames; 767 } 768 }); 769 } 770 771 /** 772 * Loads additional classes into the VM, using the property 773 * 'assistive_technologies' specified in the Sun reference 774 * implementation by a line in the 'accessibility.properties' 775 * file. The form is "assistive_technologies=..." where 776 * the "..." is a comma-separated list of assistive technology 777 * classes to load. Each class is loaded in the order given 778 * and a single instance of each is created using 779 * Class.forName(class).newInstance(). All errors are handled 780 * via an AWTError exception. 781 * 782 * <p>The assumption is made that assistive technology classes are supplied 783 * as part of INSTALLED (as opposed to: BUNDLED) extensions or specified 784 * on the class path 785 * (and therefore can be loaded using the class loader returned by 786 * a call to <code>ClassLoader.getSystemClassLoader</code>, whose 787 * delegation parent is the extension class loader for installed 788 * extensions). 789 */ loadAssistiveTechnologies()790 private static void loadAssistiveTechnologies() { 791 // Load any assistive technologies 792 if (atNames != null) { 793 ClassLoader cl = ClassLoader.getSystemClassLoader(); 794 StringTokenizer parser = new StringTokenizer(atNames," ,"); 795 String atName; 796 while (parser.hasMoreTokens()) { 797 atName = parser.nextToken(); 798 try { 799 Class<?> clazz; 800 if (cl != null) { 801 clazz = cl.loadClass(atName); 802 } else { 803 clazz = Class.forName(atName); 804 } 805 clazz.newInstance(); 806 } catch (ClassNotFoundException e) { 807 throw new AWTError("Assistive Technology not found: " 808 + atName); 809 } catch (InstantiationException e) { 810 throw new AWTError("Could not instantiate Assistive" 811 + " Technology: " + atName); 812 } catch (IllegalAccessException e) { 813 throw new AWTError("Could not access Assistive" 814 + " Technology: " + atName); 815 } catch (Exception e) { 816 throw new AWTError("Error trying to install Assistive" 817 + " Technology: " + atName + " " + e); 818 } 819 } 820 } 821 } 822 823 /** 824 * Gets the default toolkit. 825 * <p> 826 * If a system property named <code>"java.awt.headless"</code> is set 827 * to <code>true</code> then the headless implementation 828 * of <code>Toolkit</code> is used. 829 * <p> 830 * If there is no <code>"java.awt.headless"</code> or it is set to 831 * <code>false</code> and there is a system property named 832 * <code>"awt.toolkit"</code>, 833 * that property is treated as the name of a class that is a subclass 834 * of <code>Toolkit</code>; 835 * otherwise the default platform-specific implementation of 836 * <code>Toolkit</code> is used. 837 * <p> 838 * Also loads additional classes into the VM, using the property 839 * 'assistive_technologies' specified in the Sun reference 840 * implementation by a line in the 'accessibility.properties' 841 * file. The form is "assistive_technologies=..." where 842 * the "..." is a comma-separated list of assistive technology 843 * classes to load. Each class is loaded in the order given 844 * and a single instance of each is created using 845 * Class.forName(class).newInstance(). This is done just after 846 * the AWT toolkit is created. All errors are handled via an 847 * AWTError exception. 848 * @return the default toolkit. 849 * @exception AWTError if a toolkit could not be found, or 850 * if one could not be accessed or instantiated. 851 */ getDefaultToolkit()852 public static synchronized Toolkit getDefaultToolkit() { 853 if (toolkit == null) { 854 java.security.AccessController.doPrivileged( 855 new java.security.PrivilegedAction<Void>() { 856 public Void run() { 857 Class<?> cls = null; 858 String nm = System.getProperty("awt.toolkit"); 859 try { 860 cls = Class.forName(nm); 861 } catch (ClassNotFoundException e) { 862 ClassLoader cl = ClassLoader.getSystemClassLoader(); 863 if (cl != null) { 864 try { 865 cls = cl.loadClass(nm); 866 } catch (final ClassNotFoundException ignored) { 867 throw new AWTError("Toolkit not found: " + nm); 868 } 869 } 870 } 871 try { 872 if (cls != null) { 873 toolkit = (Toolkit)cls.newInstance(); 874 if (GraphicsEnvironment.isHeadless()) { 875 toolkit = new HeadlessToolkit(toolkit); 876 } 877 } 878 } catch (final InstantiationException ignored) { 879 throw new AWTError("Could not instantiate Toolkit: " + nm); 880 } catch (final IllegalAccessException ignored) { 881 throw new AWTError("Could not access Toolkit: " + nm); 882 } 883 return null; 884 } 885 }); 886 loadAssistiveTechnologies(); 887 } 888 return toolkit; 889 } 890 891 /** 892 * Returns an image which gets pixel data from the specified file, 893 * whose format can be either GIF, JPEG or PNG. 894 * The underlying toolkit attempts to resolve multiple requests 895 * with the same filename to the same returned Image. 896 * <p> 897 * Since the mechanism required to facilitate this sharing of 898 * <code>Image</code> objects may continue to hold onto images 899 * that are no longer in use for an indefinite period of time, 900 * developers are encouraged to implement their own caching of 901 * images by using the {@link #createImage(java.lang.String) createImage} 902 * variant wherever available. 903 * If the image data contained in the specified file changes, 904 * the <code>Image</code> object returned from this method may 905 * still contain stale information which was loaded from the 906 * file after a prior call. 907 * Previously loaded image data can be manually discarded by 908 * calling the {@link Image#flush flush} method on the 909 * returned <code>Image</code>. 910 * <p> 911 * This method first checks if there is a security manager installed. 912 * If so, the method calls the security manager's 913 * <code>checkRead</code> method with the file specified to ensure 914 * that the access to the image is allowed. 915 * @param filename the name of a file containing pixel data 916 * in a recognized file format. 917 * @return an image which gets its pixel data from 918 * the specified file. 919 * @throws SecurityException if a security manager exists and its 920 * checkRead method doesn't allow the operation. 921 * @see #createImage(java.lang.String) 922 */ getImage(String filename)923 public abstract Image getImage(String filename); 924 925 /** 926 * Returns an image which gets pixel data from the specified URL. 927 * The pixel data referenced by the specified URL must be in one 928 * of the following formats: GIF, JPEG or PNG. 929 * The underlying toolkit attempts to resolve multiple requests 930 * with the same URL to the same returned Image. 931 * <p> 932 * Since the mechanism required to facilitate this sharing of 933 * <code>Image</code> objects may continue to hold onto images 934 * that are no longer in use for an indefinite period of time, 935 * developers are encouraged to implement their own caching of 936 * images by using the {@link #createImage(java.net.URL) createImage} 937 * variant wherever available. 938 * If the image data stored at the specified URL changes, 939 * the <code>Image</code> object returned from this method may 940 * still contain stale information which was fetched from the 941 * URL after a prior call. 942 * Previously loaded image data can be manually discarded by 943 * calling the {@link Image#flush flush} method on the 944 * returned <code>Image</code>. 945 * <p> 946 * This method first checks if there is a security manager installed. 947 * If so, the method calls the security manager's 948 * <code>checkPermission</code> method with the 949 * url.openConnection().getPermission() permission to ensure 950 * that the access to the image is allowed. For compatibility 951 * with pre-1.2 security managers, if the access is denied with 952 * <code>FilePermission</code> or <code>SocketPermission</code>, 953 * the method throws the <code>SecurityException</code> 954 * if the corresponding 1.1-style SecurityManager.checkXXX method 955 * also denies permission. 956 * @param url the URL to use in fetching the pixel data. 957 * @return an image which gets its pixel data from 958 * the specified URL. 959 * @throws SecurityException if a security manager exists and its 960 * checkPermission method doesn't allow 961 * the operation. 962 * @see #createImage(java.net.URL) 963 */ getImage(URL url)964 public abstract Image getImage(URL url); 965 966 /** 967 * Returns an image which gets pixel data from the specified file. 968 * The returned Image is a new object which will not be shared 969 * with any other caller of this method or its getImage variant. 970 * <p> 971 * This method first checks if there is a security manager installed. 972 * If so, the method calls the security manager's 973 * <code>checkRead</code> method with the specified file to ensure 974 * that the image creation is allowed. 975 * @param filename the name of a file containing pixel data 976 * in a recognized file format. 977 * @return an image which gets its pixel data from 978 * the specified file. 979 * @throws SecurityException if a security manager exists and its 980 * checkRead method doesn't allow the operation. 981 * @see #getImage(java.lang.String) 982 */ createImage(String filename)983 public abstract Image createImage(String filename); 984 985 /** 986 * Returns an image which gets pixel data from the specified URL. 987 * The returned Image is a new object which will not be shared 988 * with any other caller of this method or its getImage variant. 989 * <p> 990 * This method first checks if there is a security manager installed. 991 * If so, the method calls the security manager's 992 * <code>checkPermission</code> method with the 993 * url.openConnection().getPermission() permission to ensure 994 * that the image creation is allowed. For compatibility 995 * with pre-1.2 security managers, if the access is denied with 996 * <code>FilePermission</code> or <code>SocketPermission</code>, 997 * the method throws <code>SecurityException</code> 998 * if the corresponding 1.1-style SecurityManager.checkXXX method 999 * also denies permission. 1000 * @param url the URL to use in fetching the pixel data. 1001 * @return an image which gets its pixel data from 1002 * the specified URL. 1003 * @throws SecurityException if a security manager exists and its 1004 * checkPermission method doesn't allow 1005 * the operation. 1006 * @see #getImage(java.net.URL) 1007 */ createImage(URL url)1008 public abstract Image createImage(URL url); 1009 1010 /** 1011 * Prepares an image for rendering. 1012 * <p> 1013 * If the values of the width and height arguments are both 1014 * <code>-1</code>, this method prepares the image for rendering 1015 * on the default screen; otherwise, this method prepares an image 1016 * for rendering on the default screen at the specified width and height. 1017 * <p> 1018 * The image data is downloaded asynchronously in another thread, 1019 * and an appropriately scaled screen representation of the image is 1020 * generated. 1021 * <p> 1022 * This method is called by components <code>prepareImage</code> 1023 * methods. 1024 * <p> 1025 * Information on the flags returned by this method can be found 1026 * with the definition of the <code>ImageObserver</code> interface. 1027 1028 * @param image the image for which to prepare a 1029 * screen representation. 1030 * @param width the width of the desired screen 1031 * representation, or <code>-1</code>. 1032 * @param height the height of the desired screen 1033 * representation, or <code>-1</code>. 1034 * @param observer the <code>ImageObserver</code> 1035 * object to be notified as the 1036 * image is being prepared. 1037 * @return <code>true</code> if the image has already been 1038 * fully prepared; <code>false</code> otherwise. 1039 * @see java.awt.Component#prepareImage(java.awt.Image, 1040 * java.awt.image.ImageObserver) 1041 * @see java.awt.Component#prepareImage(java.awt.Image, 1042 * int, int, java.awt.image.ImageObserver) 1043 * @see java.awt.image.ImageObserver 1044 */ prepareImage(Image image, int width, int height, ImageObserver observer)1045 public abstract boolean prepareImage(Image image, int width, int height, 1046 ImageObserver observer); 1047 1048 /** 1049 * Indicates the construction status of a specified image that is 1050 * being prepared for display. 1051 * <p> 1052 * If the values of the width and height arguments are both 1053 * <code>-1</code>, this method returns the construction status of 1054 * a screen representation of the specified image in this toolkit. 1055 * Otherwise, this method returns the construction status of a 1056 * scaled representation of the image at the specified width 1057 * and height. 1058 * <p> 1059 * This method does not cause the image to begin loading. 1060 * An application must call <code>prepareImage</code> to force 1061 * the loading of an image. 1062 * <p> 1063 * This method is called by the component's <code>checkImage</code> 1064 * methods. 1065 * <p> 1066 * Information on the flags returned by this method can be found 1067 * with the definition of the <code>ImageObserver</code> interface. 1068 * @param image the image whose status is being checked. 1069 * @param width the width of the scaled version whose status is 1070 * being checked, or <code>-1</code>. 1071 * @param height the height of the scaled version whose status 1072 * is being checked, or <code>-1</code>. 1073 * @param observer the <code>ImageObserver</code> object to be 1074 * notified as the image is being prepared. 1075 * @return the bitwise inclusive <strong>OR</strong> of the 1076 * <code>ImageObserver</code> flags for the 1077 * image data that is currently available. 1078 * @see java.awt.Toolkit#prepareImage(java.awt.Image, 1079 * int, int, java.awt.image.ImageObserver) 1080 * @see java.awt.Component#checkImage(java.awt.Image, 1081 * java.awt.image.ImageObserver) 1082 * @see java.awt.Component#checkImage(java.awt.Image, 1083 * int, int, java.awt.image.ImageObserver) 1084 * @see java.awt.image.ImageObserver 1085 */ checkImage(Image image, int width, int height, ImageObserver observer)1086 public abstract int checkImage(Image image, int width, int height, 1087 ImageObserver observer); 1088 1089 /** 1090 * Creates an image with the specified image producer. 1091 * @param producer the image producer to be used. 1092 * @return an image with the specified image producer. 1093 * @see java.awt.Image 1094 * @see java.awt.image.ImageProducer 1095 * @see java.awt.Component#createImage(java.awt.image.ImageProducer) 1096 */ createImage(ImageProducer producer)1097 public abstract Image createImage(ImageProducer producer); 1098 1099 /** 1100 * Creates an image which decodes the image stored in the specified 1101 * byte array. 1102 * <p> 1103 * The data must be in some image format, such as GIF or JPEG, 1104 * that is supported by this toolkit. 1105 * @param imagedata an array of bytes, representing 1106 * image data in a supported image format. 1107 * @return an image. 1108 * @since JDK1.1 1109 */ createImage(byte[] imagedata)1110 public Image createImage(byte[] imagedata) { 1111 return createImage(imagedata, 0, imagedata.length); 1112 } 1113 1114 /** 1115 * Creates an image which decodes the image stored in the specified 1116 * byte array, and at the specified offset and length. 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 * @param imageoffset the offset of the beginning 1122 * of the data in the array. 1123 * @param imagelength the length of the data in the array. 1124 * @return an image. 1125 * @since JDK1.1 1126 */ createImage(byte[] imagedata, int imageoffset, int imagelength)1127 public abstract Image createImage(byte[] imagedata, 1128 int imageoffset, 1129 int imagelength); 1130 1131 /** 1132 * Gets a <code>PrintJob</code> object which is the result of initiating 1133 * a print operation on the toolkit's platform. 1134 * <p> 1135 * Each actual implementation of this method should first check if there 1136 * is a security manager installed. If there is, the method should call 1137 * the security manager's <code>checkPrintJobAccess</code> method to 1138 * ensure initiation of a print operation is allowed. If the default 1139 * implementation of <code>checkPrintJobAccess</code> is used (that is, 1140 * that method is not overriden), then this results in a call to the 1141 * security manager's <code>checkPermission</code> method with a <code> 1142 * RuntimePermission("queuePrintJob")</code> permission. 1143 * 1144 * @param frame the parent of the print dialog. May not be null. 1145 * @param jobtitle the title of the PrintJob. A null title is equivalent 1146 * to "". 1147 * @param props a Properties object containing zero or more properties. 1148 * Properties are not standardized and are not consistent across 1149 * implementations. Because of this, PrintJobs which require job 1150 * and page control should use the version of this function which 1151 * takes JobAttributes and PageAttributes objects. This object 1152 * may be updated to reflect the user's job choices on exit. May 1153 * be null. 1154 * @return a <code>PrintJob</code> object, or <code>null</code> if the 1155 * user cancelled the print job. 1156 * @throws NullPointerException if frame is null 1157 * @throws SecurityException if this thread is not allowed to initiate a 1158 * print job request 1159 * @see java.awt.GraphicsEnvironment#isHeadless 1160 * @see java.awt.PrintJob 1161 * @see java.lang.RuntimePermission 1162 * @since JDK1.1 1163 */ getPrintJob(Frame frame, String jobtitle, Properties props)1164 public abstract PrintJob getPrintJob(Frame frame, String jobtitle, 1165 Properties props); 1166 1167 /** 1168 * Gets a <code>PrintJob</code> object which is the result of initiating 1169 * a print operation on the toolkit's platform. 1170 * <p> 1171 * Each actual implementation of this method should first check if there 1172 * is a security manager installed. If there is, the method should call 1173 * the security manager's <code>checkPrintJobAccess</code> method to 1174 * ensure initiation of a print operation is allowed. If the default 1175 * implementation of <code>checkPrintJobAccess</code> is used (that is, 1176 * that method is not overriden), then this results in a call to the 1177 * security manager's <code>checkPermission</code> method with a <code> 1178 * RuntimePermission("queuePrintJob")</code> permission. 1179 * 1180 * @param frame the parent of the print dialog. May not be null. 1181 * @param jobtitle the title of the PrintJob. A null title is equivalent 1182 * to "". 1183 * @param jobAttributes a set of job attributes which will control the 1184 * PrintJob. The attributes will be updated to reflect the user's 1185 * choices as outlined in the JobAttributes documentation. May be 1186 * null. 1187 * @param pageAttributes a set of page attributes which will control the 1188 * PrintJob. The attributes will be applied to every page in the 1189 * job. The attributes will be updated to reflect the user's 1190 * choices as outlined in the PageAttributes documentation. May be 1191 * null. 1192 * @return a <code>PrintJob</code> object, or <code>null</code> if the 1193 * user cancelled the print job. 1194 * @throws NullPointerException if frame is null 1195 * @throws IllegalArgumentException if pageAttributes specifies differing 1196 * cross feed and feed resolutions. Also if this thread has 1197 * access to the file system and jobAttributes specifies 1198 * print to file, and the specified destination file exists but 1199 * is a directory rather than a regular file, does not exist but 1200 * cannot be created, or cannot be opened for any other reason. 1201 * However in the case of print to file, if a dialog is also 1202 * requested to be displayed then the user will be given an 1203 * opportunity to select a file and proceed with printing. 1204 * The dialog will ensure that the selected output file 1205 * is valid before returning from this method. 1206 * @throws SecurityException if this thread is not allowed to initiate a 1207 * print job request, or if jobAttributes specifies print to file, 1208 * and this thread is not allowed to access the file system 1209 * @see java.awt.PrintJob 1210 * @see java.awt.GraphicsEnvironment#isHeadless 1211 * @see java.lang.RuntimePermission 1212 * @see java.awt.JobAttributes 1213 * @see java.awt.PageAttributes 1214 * @since 1.3 1215 */ getPrintJob(Frame frame, String jobtitle, JobAttributes jobAttributes, PageAttributes pageAttributes)1216 public PrintJob getPrintJob(Frame frame, String jobtitle, 1217 JobAttributes jobAttributes, 1218 PageAttributes pageAttributes) { 1219 // Override to add printing support with new job/page control classes 1220 1221 if (this != Toolkit.getDefaultToolkit()) { 1222 return Toolkit.getDefaultToolkit().getPrintJob(frame, jobtitle, 1223 jobAttributes, 1224 pageAttributes); 1225 } else { 1226 return getPrintJob(frame, jobtitle, null); 1227 } 1228 } 1229 1230 /** 1231 * Emits an audio beep depending on native system settings and hardware 1232 * capabilities. 1233 * @since JDK1.1 1234 */ beep()1235 public abstract void beep(); 1236 1237 /** 1238 * Gets the singleton instance of the system Clipboard which interfaces 1239 * with clipboard facilities provided by the native platform. This 1240 * clipboard enables data transfer between Java programs and native 1241 * applications which use native clipboard facilities. 1242 * <p> 1243 * In addition to any and all formats specified in the flavormap.properties 1244 * file, or other file specified by the <code>AWT.DnD.flavorMapFileURL 1245 * </code> Toolkit property, text returned by the system Clipboard's <code> 1246 * getTransferData()</code> method is available in the following flavors: 1247 * <ul> 1248 * <li>DataFlavor.stringFlavor</li> 1249 * <li>DataFlavor.plainTextFlavor (<b>deprecated</b>)</li> 1250 * </ul> 1251 * As with <code>java.awt.datatransfer.StringSelection</code>, if the 1252 * requested flavor is <code>DataFlavor.plainTextFlavor</code>, or an 1253 * equivalent flavor, a Reader is returned. <b>Note:</b> The behavior of 1254 * the system Clipboard's <code>getTransferData()</code> method for <code> 1255 * DataFlavor.plainTextFlavor</code>, and equivalent DataFlavors, is 1256 * inconsistent with the definition of <code>DataFlavor.plainTextFlavor 1257 * </code>. Because of this, support for <code> 1258 * DataFlavor.plainTextFlavor</code>, and equivalent flavors, is 1259 * <b>deprecated</b>. 1260 * <p> 1261 * Each actual implementation of this method should first check if there 1262 * is a security manager installed. If there is, the method should call 1263 * the security manager's {@link SecurityManager#checkPermission 1264 * checkPermission} method to check {@code AWTPermission("accessClipboard")}. 1265 * 1266 * @return the system Clipboard 1267 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 1268 * returns true 1269 * @see java.awt.GraphicsEnvironment#isHeadless 1270 * @see java.awt.datatransfer.Clipboard 1271 * @see java.awt.datatransfer.StringSelection 1272 * @see java.awt.datatransfer.DataFlavor#stringFlavor 1273 * @see java.awt.datatransfer.DataFlavor#plainTextFlavor 1274 * @see java.io.Reader 1275 * @see java.awt.AWTPermission 1276 * @since JDK1.1 1277 */ getSystemClipboard()1278 public abstract Clipboard getSystemClipboard() 1279 throws HeadlessException; 1280 1281 /** 1282 * Gets the singleton instance of the system selection as a 1283 * <code>Clipboard</code> object. This allows an application to read and 1284 * modify the current, system-wide selection. 1285 * <p> 1286 * An application is responsible for updating the system selection whenever 1287 * the user selects text, using either the mouse or the keyboard. 1288 * Typically, this is implemented by installing a 1289 * <code>FocusListener</code> on all <code>Component</code>s which support 1290 * text selection, and, between <code>FOCUS_GAINED</code> and 1291 * <code>FOCUS_LOST</code> events delivered to that <code>Component</code>, 1292 * updating the system selection <code>Clipboard</code> when the selection 1293 * changes inside the <code>Component</code>. Properly updating the system 1294 * selection ensures that a Java application will interact correctly with 1295 * native applications and other Java applications running simultaneously 1296 * on the system. Note that <code>java.awt.TextComponent</code> and 1297 * <code>javax.swing.text.JTextComponent</code> already adhere to this 1298 * policy. When using these classes, and their subclasses, developers need 1299 * not write any additional code. 1300 * <p> 1301 * Some platforms do not support a system selection <code>Clipboard</code>. 1302 * On those platforms, this method will return <code>null</code>. In such a 1303 * case, an application is absolved from its responsibility to update the 1304 * system selection <code>Clipboard</code> as described above. 1305 * <p> 1306 * Each actual implementation of this method should first check if there 1307 * is a security manager installed. If there is, the method should call 1308 * the security manager's {@link SecurityManager#checkPermission 1309 * checkPermission} method to check {@code AWTPermission("accessClipboard")}. 1310 * 1311 * @return the system selection as a <code>Clipboard</code>, or 1312 * <code>null</code> if the native platform does not support a 1313 * system selection <code>Clipboard</code> 1314 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 1315 * returns true 1316 * 1317 * @see java.awt.datatransfer.Clipboard 1318 * @see java.awt.event.FocusListener 1319 * @see java.awt.event.FocusEvent#FOCUS_GAINED 1320 * @see java.awt.event.FocusEvent#FOCUS_LOST 1321 * @see TextComponent 1322 * @see javax.swing.text.JTextComponent 1323 * @see AWTPermission 1324 * @see GraphicsEnvironment#isHeadless 1325 * @since 1.4 1326 */ getSystemSelection()1327 public Clipboard getSystemSelection() throws HeadlessException { 1328 GraphicsEnvironment.checkHeadless(); 1329 1330 if (this != Toolkit.getDefaultToolkit()) { 1331 return Toolkit.getDefaultToolkit().getSystemSelection(); 1332 } else { 1333 GraphicsEnvironment.checkHeadless(); 1334 return null; 1335 } 1336 } 1337 1338 /** 1339 * Determines which modifier key is the appropriate accelerator 1340 * key for menu shortcuts. 1341 * <p> 1342 * Menu shortcuts, which are embodied in the 1343 * <code>MenuShortcut</code> class, are handled by the 1344 * <code>MenuBar</code> class. 1345 * <p> 1346 * By default, this method returns <code>Event.CTRL_MASK</code>. 1347 * Toolkit implementations should override this method if the 1348 * <b>Control</b> key isn't the correct key for accelerators. 1349 * @return the modifier mask on the <code>Event</code> class 1350 * that is used for menu shortcuts on this toolkit. 1351 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 1352 * returns true 1353 * @see java.awt.GraphicsEnvironment#isHeadless 1354 * @see java.awt.MenuBar 1355 * @see java.awt.MenuShortcut 1356 * @since JDK1.1 1357 */ getMenuShortcutKeyMask()1358 public int getMenuShortcutKeyMask() throws HeadlessException { 1359 GraphicsEnvironment.checkHeadless(); 1360 1361 return Event.CTRL_MASK; 1362 } 1363 1364 /** 1365 * Returns whether the given locking key on the keyboard is currently in 1366 * its "on" state. 1367 * Valid key codes are 1368 * {@link java.awt.event.KeyEvent#VK_CAPS_LOCK VK_CAPS_LOCK}, 1369 * {@link java.awt.event.KeyEvent#VK_NUM_LOCK VK_NUM_LOCK}, 1370 * {@link java.awt.event.KeyEvent#VK_SCROLL_LOCK VK_SCROLL_LOCK}, and 1371 * {@link java.awt.event.KeyEvent#VK_KANA_LOCK VK_KANA_LOCK}. 1372 * 1373 * @exception java.lang.IllegalArgumentException if <code>keyCode</code> 1374 * is not one of the valid key codes 1375 * @exception java.lang.UnsupportedOperationException if the host system doesn't 1376 * allow getting the state of this key programmatically, or if the keyboard 1377 * doesn't have this key 1378 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 1379 * returns true 1380 * @see java.awt.GraphicsEnvironment#isHeadless 1381 * @since 1.3 1382 */ getLockingKeyState(int keyCode)1383 public boolean getLockingKeyState(int keyCode) 1384 throws UnsupportedOperationException 1385 { 1386 GraphicsEnvironment.checkHeadless(); 1387 1388 if (! (keyCode == KeyEvent.VK_CAPS_LOCK || keyCode == KeyEvent.VK_NUM_LOCK || 1389 keyCode == KeyEvent.VK_SCROLL_LOCK || keyCode == KeyEvent.VK_KANA_LOCK)) { 1390 throw new IllegalArgumentException("invalid key for Toolkit.getLockingKeyState"); 1391 } 1392 throw new UnsupportedOperationException("Toolkit.getLockingKeyState"); 1393 } 1394 1395 /** 1396 * Sets the state of the given locking key on the keyboard. 1397 * Valid key codes are 1398 * {@link java.awt.event.KeyEvent#VK_CAPS_LOCK VK_CAPS_LOCK}, 1399 * {@link java.awt.event.KeyEvent#VK_NUM_LOCK VK_NUM_LOCK}, 1400 * {@link java.awt.event.KeyEvent#VK_SCROLL_LOCK VK_SCROLL_LOCK}, and 1401 * {@link java.awt.event.KeyEvent#VK_KANA_LOCK VK_KANA_LOCK}. 1402 * <p> 1403 * Depending on the platform, setting the state of a locking key may 1404 * involve event processing and therefore may not be immediately 1405 * observable through getLockingKeyState. 1406 * 1407 * @exception java.lang.IllegalArgumentException if <code>keyCode</code> 1408 * is not one of the valid key codes 1409 * @exception java.lang.UnsupportedOperationException if the host system doesn't 1410 * allow setting the state of this key programmatically, or if the keyboard 1411 * doesn't have this key 1412 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 1413 * returns true 1414 * @see java.awt.GraphicsEnvironment#isHeadless 1415 * @since 1.3 1416 */ setLockingKeyState(int keyCode, boolean on)1417 public void setLockingKeyState(int keyCode, boolean on) 1418 throws UnsupportedOperationException 1419 { 1420 GraphicsEnvironment.checkHeadless(); 1421 1422 if (! (keyCode == KeyEvent.VK_CAPS_LOCK || keyCode == KeyEvent.VK_NUM_LOCK || 1423 keyCode == KeyEvent.VK_SCROLL_LOCK || keyCode == KeyEvent.VK_KANA_LOCK)) { 1424 throw new IllegalArgumentException("invalid key for Toolkit.setLockingKeyState"); 1425 } 1426 throw new UnsupportedOperationException("Toolkit.setLockingKeyState"); 1427 } 1428 1429 /** 1430 * Give native peers the ability to query the native container 1431 * given a native component (eg the direct parent may be lightweight). 1432 */ getNativeContainer(Component c)1433 protected static Container getNativeContainer(Component c) { 1434 return c.getNativeContainer(); 1435 } 1436 1437 /** 1438 * Creates a new custom cursor object. 1439 * If the image to display is invalid, the cursor will be hidden (made 1440 * completely transparent), and the hotspot will be set to (0, 0). 1441 * 1442 * <p>Note that multi-frame images are invalid and may cause this 1443 * method to hang. 1444 * 1445 * @param cursor the image to display when the cursor is activated 1446 * @param hotSpot the X and Y of the large cursor's hot spot; the 1447 * hotSpot values must be less than the Dimension returned by 1448 * <code>getBestCursorSize</code> 1449 * @param name a localized description of the cursor, for Java Accessibility use 1450 * @exception IndexOutOfBoundsException if the hotSpot values are outside 1451 * the bounds of the cursor 1452 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 1453 * returns true 1454 * @see java.awt.GraphicsEnvironment#isHeadless 1455 * @since 1.2 1456 */ createCustomCursor(Image cursor, Point hotSpot, String name)1457 public Cursor createCustomCursor(Image cursor, Point hotSpot, String name) 1458 throws IndexOutOfBoundsException, HeadlessException 1459 { 1460 // Override to implement custom cursor support. 1461 if (this != Toolkit.getDefaultToolkit()) { 1462 return Toolkit.getDefaultToolkit(). 1463 createCustomCursor(cursor, hotSpot, name); 1464 } else { 1465 return new Cursor(Cursor.DEFAULT_CURSOR); 1466 } 1467 } 1468 1469 /** 1470 * Returns the supported cursor dimension which is closest to the desired 1471 * sizes. Systems which only support a single cursor size will return that 1472 * size regardless of the desired sizes. Systems which don't support custom 1473 * cursors will return a dimension of 0, 0. <p> 1474 * Note: if an image is used whose dimensions don't match a supported size 1475 * (as returned by this method), the Toolkit implementation will attempt to 1476 * resize the image to a supported size. 1477 * Since converting low-resolution images is difficult, 1478 * no guarantees are made as to the quality of a cursor image which isn't a 1479 * supported size. It is therefore recommended that this method 1480 * be called and an appropriate image used so no image conversion is made. 1481 * 1482 * @param preferredWidth the preferred cursor width the component would like 1483 * to use. 1484 * @param preferredHeight the preferred cursor height the component would like 1485 * to use. 1486 * @return the closest matching supported cursor size, or a dimension of 0,0 if 1487 * the Toolkit implementation doesn't support custom cursors. 1488 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 1489 * returns true 1490 * @see java.awt.GraphicsEnvironment#isHeadless 1491 * @since 1.2 1492 */ getBestCursorSize(int preferredWidth, int preferredHeight)1493 public Dimension getBestCursorSize(int preferredWidth, 1494 int preferredHeight) throws HeadlessException { 1495 GraphicsEnvironment.checkHeadless(); 1496 1497 // Override to implement custom cursor support. 1498 if (this != Toolkit.getDefaultToolkit()) { 1499 return Toolkit.getDefaultToolkit(). 1500 getBestCursorSize(preferredWidth, preferredHeight); 1501 } else { 1502 return new Dimension(0, 0); 1503 } 1504 } 1505 1506 /** 1507 * Returns the maximum number of colors the Toolkit supports in a custom cursor 1508 * palette.<p> 1509 * Note: if an image is used which has more colors in its palette than 1510 * the supported maximum, the Toolkit implementation will attempt to flatten the 1511 * palette to the maximum. Since converting low-resolution images is difficult, 1512 * no guarantees are made as to the quality of a cursor image which has more 1513 * colors than the system supports. It is therefore recommended that this method 1514 * be called and an appropriate image used so no image conversion is made. 1515 * 1516 * @return the maximum number of colors, or zero if custom cursors are not 1517 * supported by this Toolkit implementation. 1518 * @exception HeadlessException if GraphicsEnvironment.isHeadless() 1519 * returns true 1520 * @see java.awt.GraphicsEnvironment#isHeadless 1521 * @since 1.2 1522 */ getMaximumCursorColors()1523 public int getMaximumCursorColors() throws HeadlessException { 1524 GraphicsEnvironment.checkHeadless(); 1525 1526 // Override to implement custom cursor support. 1527 if (this != Toolkit.getDefaultToolkit()) { 1528 return Toolkit.getDefaultToolkit().getMaximumCursorColors(); 1529 } else { 1530 return 0; 1531 } 1532 } 1533 1534 /** 1535 * Returns whether Toolkit supports this state for 1536 * <code>Frame</code>s. This method tells whether the <em>UI 1537 * concept</em> of, say, maximization or iconification is 1538 * supported. It will always return false for "compound" states 1539 * like <code>Frame.ICONIFIED|Frame.MAXIMIZED_VERT</code>. 1540 * In other words, the rule of thumb is that only queries with a 1541 * single frame state constant as an argument are meaningful. 1542 * <p>Note that supporting a given concept is a platform- 1543 * dependent feature. Due to native limitations the Toolkit 1544 * object may report a particular state as supported, however at 1545 * the same time the Toolkit object will be unable to apply the 1546 * state to a given frame. This circumstance has two following 1547 * consequences: 1548 * <ul> 1549 * <li>Only the return value of {@code false} for the present 1550 * method actually indicates that the given state is not 1551 * supported. If the method returns {@code true} the given state 1552 * may still be unsupported and/or unavailable for a particular 1553 * frame. 1554 * <li>The developer should consider examining the value of the 1555 * {@link java.awt.event.WindowEvent#getNewState} method of the 1556 * {@code WindowEvent} received through the {@link 1557 * java.awt.event.WindowStateListener}, rather than assuming 1558 * that the state given to the {@code setExtendedState()} method 1559 * will be definitely applied. For more information see the 1560 * documentation for the {@link Frame#setExtendedState} method. 1561 * </ul> 1562 * 1563 * @param state one of named frame state constants. 1564 * @return <code>true</code> is this frame state is supported by 1565 * this Toolkit implementation, <code>false</code> otherwise. 1566 * @exception HeadlessException 1567 * if <code>GraphicsEnvironment.isHeadless()</code> 1568 * returns <code>true</code>. 1569 * @see java.awt.Window#addWindowStateListener 1570 * @since 1.4 1571 */ isFrameStateSupported(int state)1572 public boolean isFrameStateSupported(int state) 1573 throws HeadlessException 1574 { 1575 GraphicsEnvironment.checkHeadless(); 1576 1577 if (this != Toolkit.getDefaultToolkit()) { 1578 return Toolkit.getDefaultToolkit(). 1579 isFrameStateSupported(state); 1580 } else { 1581 return (state == Frame.NORMAL); // others are not guaranteed 1582 } 1583 } 1584 1585 /** 1586 * Support for I18N: any visible strings should be stored in 1587 * sun.awt.resources.awt.properties. The ResourceBundle is stored 1588 * here, so that only one copy is maintained. 1589 */ 1590 private static ResourceBundle resources; 1591 private static ResourceBundle platformResources; 1592 1593 // called by platform toolkit setPlatformResources(ResourceBundle bundle)1594 private static void setPlatformResources(ResourceBundle bundle) { 1595 platformResources = bundle; 1596 } 1597 1598 /** 1599 * Initialize JNI field and method ids 1600 */ initIDs()1601 private static native void initIDs(); 1602 1603 /** 1604 * WARNING: This is a temporary workaround for a problem in the 1605 * way the AWT loads native libraries. A number of classes in the 1606 * AWT package have a native method, initIDs(), which initializes 1607 * the JNI field and method ids used in the native portion of 1608 * their implementation. 1609 * 1610 * Since the use and storage of these ids is done by the 1611 * implementation libraries, the implementation of these method is 1612 * provided by the particular AWT implementations (for example, 1613 * "Toolkit"s/Peer), such as Motif, Microsoft Windows, or Tiny. The 1614 * problem is that this means that the native libraries must be 1615 * loaded by the java.* classes, which do not necessarily know the 1616 * names of the libraries to load. A better way of doing this 1617 * would be to provide a separate library which defines java.awt.* 1618 * initIDs, and exports the relevant symbols out to the 1619 * implementation libraries. 1620 * 1621 * For now, we know it's done by the implementation, and we assume 1622 * that the name of the library is "awt". -br. 1623 * 1624 * If you change loadLibraries(), please add the change to 1625 * java.awt.image.ColorModel.loadLibraries(). Unfortunately, 1626 * classes can be loaded in java.awt.image that depend on 1627 * libawt and there is no way to call Toolkit.loadLibraries() 1628 * directly. -hung 1629 */ 1630 private static boolean loaded = false; loadLibraries()1631 static void loadLibraries() { 1632 if (!loaded) { 1633 java.security.AccessController.doPrivileged( 1634 new java.security.PrivilegedAction<Void>() { 1635 public Void run() { 1636 System.loadLibrary("awt"); 1637 return null; 1638 } 1639 }); 1640 loaded = true; 1641 } 1642 } 1643 1644 static { AWTAccessor.setToolkitAccessor( new AWTAccessor.ToolkitAccessor() { @Override public void setPlatformResources(ResourceBundle bundle) { Toolkit.setPlatformResources(bundle); } })1645 AWTAccessor.setToolkitAccessor( 1646 new AWTAccessor.ToolkitAccessor() { 1647 @Override 1648 public void setPlatformResources(ResourceBundle bundle) { 1649 Toolkit.setPlatformResources(bundle); 1650 } 1651 }); 1652 java.security.AccessController.doPrivileged( new java.security.PrivilegedAction<Void>() { public Void run() { try { resources = ResourceBundle.getBundle(R, Locale.getDefault(), ClassLoader.getSystemClassLoader(), CoreResourceBundleControl.getRBControlInstance()); } catch (MissingResourceException e) { } return null; } })1653 java.security.AccessController.doPrivileged( 1654 new java.security.PrivilegedAction<Void>() { 1655 public Void run() { 1656 try { 1657 resources = 1658 ResourceBundle.getBundle("sun.awt.resources.awt", 1659 Locale.getDefault(), 1660 ClassLoader.getSystemClassLoader(), 1661 CoreResourceBundleControl.getRBControlInstance()); 1662 } catch (MissingResourceException e) { 1663 // No resource file; defaults will be used. 1664 } 1665 return null; 1666 } 1667 }); 1668 1669 // ensure that the proper libraries are loaded loadLibraries()1670 loadLibraries(); initAssistiveTechnologies()1671 initAssistiveTechnologies(); 1672 if (!GraphicsEnvironment.isHeadless()) { initIDs()1673 initIDs(); 1674 } 1675 } 1676 1677 /** 1678 * Gets a property with the specified key and default. 1679 * This method returns defaultValue if the property is not found. 1680 */ getProperty(String key, String defaultValue)1681 public static String getProperty(String key, String defaultValue) { 1682 // first try platform specific bundle 1683 if (platformResources != null) { 1684 try { 1685 return platformResources.getString(key); 1686 } 1687 catch (MissingResourceException e) {} 1688 } 1689 1690 // then shared one 1691 if (resources != null) { 1692 try { 1693 return resources.getString(key); 1694 } 1695 catch (MissingResourceException e) {} 1696 } 1697 1698 return defaultValue; 1699 } 1700 1701 /** 1702 * Get the application's or applet's EventQueue instance. 1703 * Depending on the Toolkit implementation, different EventQueues 1704 * may be returned for different applets. Applets should 1705 * therefore not assume that the EventQueue instance returned 1706 * by this method will be shared by other applets or the system. 1707 * 1708 * <p> If there is a security manager then its 1709 * {@link SecurityManager#checkPermission checkPermission} method 1710 * is called to check {@code AWTPermission("accessEventQueue")}. 1711 * 1712 * @return the <code>EventQueue</code> object 1713 * @throws SecurityException 1714 * if a security manager is set and it denies access to 1715 * the {@code EventQueue} 1716 * @see java.awt.AWTPermission 1717 */ getSystemEventQueue()1718 public final EventQueue getSystemEventQueue() { 1719 SecurityManager security = System.getSecurityManager(); 1720 if (security != null) { 1721 security.checkPermission(SecurityConstants.AWT.CHECK_AWT_EVENTQUEUE_PERMISSION); 1722 } 1723 return getSystemEventQueueImpl(); 1724 } 1725 1726 /** 1727 * Gets the application's or applet's <code>EventQueue</code> 1728 * instance, without checking access. For security reasons, 1729 * this can only be called from a <code>Toolkit</code> subclass. 1730 * @return the <code>EventQueue</code> object 1731 */ getSystemEventQueueImpl()1732 protected abstract EventQueue getSystemEventQueueImpl(); 1733 1734 /* Accessor method for use by AWT package routines. */ getEventQueue()1735 static EventQueue getEventQueue() { 1736 return getDefaultToolkit().getSystemEventQueueImpl(); 1737 } 1738 1739 /** 1740 * Creates the peer for a DragSourceContext. 1741 * Always throws InvalidDndOperationException if 1742 * GraphicsEnvironment.isHeadless() returns true. 1743 * @see java.awt.GraphicsEnvironment#isHeadless 1744 */ createDragSourceContextPeer(DragGestureEvent dge)1745 public abstract DragSourceContextPeer createDragSourceContextPeer(DragGestureEvent dge) throws InvalidDnDOperationException; 1746 1747 /** 1748 * Creates a concrete, platform dependent, subclass of the abstract 1749 * DragGestureRecognizer class requested, and associates it with the 1750 * DragSource, Component and DragGestureListener specified. 1751 * 1752 * subclasses should override this to provide their own implementation 1753 * 1754 * @param abstractRecognizerClass The abstract class of the required recognizer 1755 * @param ds The DragSource 1756 * @param c The Component target for the DragGestureRecognizer 1757 * @param srcActions The actions permitted for the gesture 1758 * @param dgl The DragGestureListener 1759 * 1760 * @return the new object or null. Always returns null if 1761 * GraphicsEnvironment.isHeadless() returns true. 1762 * @see java.awt.GraphicsEnvironment#isHeadless 1763 */ 1764 public <T extends DragGestureRecognizer> T createDragGestureRecognizer(Class<T> abstractRecognizerClass, DragSource ds, Component c, int srcActions, DragGestureListener dgl)1765 createDragGestureRecognizer(Class<T> abstractRecognizerClass, 1766 DragSource ds, Component c, int srcActions, 1767 DragGestureListener dgl) 1768 { 1769 return null; 1770 } 1771 1772 /** 1773 * Obtains a value for the specified desktop property. 1774 * 1775 * A desktop property is a uniquely named value for a resource that 1776 * is Toolkit global in nature. Usually it also is an abstract 1777 * representation for an underlying platform dependent desktop setting. 1778 * For more information on desktop properties supported by the AWT see 1779 * <a href="doc-files/DesktopProperties.html">AWT Desktop Properties</a>. 1780 */ getDesktopProperty(String propertyName)1781 public final synchronized Object getDesktopProperty(String propertyName) { 1782 // This is a workaround for headless toolkits. It would be 1783 // better to override this method but it is declared final. 1784 // "this instanceof" syntax defeats polymorphism. 1785 // --mm, 03/03/00 1786 if (this instanceof HeadlessToolkit) { 1787 return ((HeadlessToolkit)this).getUnderlyingToolkit() 1788 .getDesktopProperty(propertyName); 1789 } 1790 1791 if (desktopProperties.isEmpty()) { 1792 initializeDesktopProperties(); 1793 } 1794 1795 Object value; 1796 1797 // This property should never be cached 1798 if (propertyName.equals("awt.dynamicLayoutSupported")) { 1799 return getDefaultToolkit().lazilyLoadDesktopProperty(propertyName); 1800 } 1801 1802 value = desktopProperties.get(propertyName); 1803 1804 if (value == null) { 1805 value = lazilyLoadDesktopProperty(propertyName); 1806 1807 if (value != null) { 1808 setDesktopProperty(propertyName, value); 1809 } 1810 } 1811 1812 /* for property "awt.font.desktophints" */ 1813 if (value instanceof RenderingHints) { 1814 value = ((RenderingHints)value).clone(); 1815 } 1816 1817 return value; 1818 } 1819 1820 /** 1821 * Sets the named desktop property to the specified value and fires a 1822 * property change event to notify any listeners that the value has changed. 1823 */ setDesktopProperty(String name, Object newValue)1824 protected final void setDesktopProperty(String name, Object newValue) { 1825 // This is a workaround for headless toolkits. It would be 1826 // better to override this method but it is declared final. 1827 // "this instanceof" syntax defeats polymorphism. 1828 // --mm, 03/03/00 1829 if (this instanceof HeadlessToolkit) { 1830 ((HeadlessToolkit)this).getUnderlyingToolkit() 1831 .setDesktopProperty(name, newValue); 1832 return; 1833 } 1834 Object oldValue; 1835 1836 synchronized (this) { 1837 oldValue = desktopProperties.get(name); 1838 desktopProperties.put(name, newValue); 1839 } 1840 1841 // Don't fire change event if old and new values are null. 1842 // It helps to avoid recursive resending of WM_THEMECHANGED 1843 if (oldValue != null || newValue != null) { 1844 desktopPropsSupport.firePropertyChange(name, oldValue, newValue); 1845 } 1846 } 1847 1848 /** 1849 * an opportunity to lazily evaluate desktop property values. 1850 */ lazilyLoadDesktopProperty(String name)1851 protected Object lazilyLoadDesktopProperty(String name) { 1852 return null; 1853 } 1854 1855 /** 1856 * initializeDesktopProperties 1857 */ initializeDesktopProperties()1858 protected void initializeDesktopProperties() { 1859 } 1860 1861 /** 1862 * Adds the specified property change listener for the named desktop 1863 * property. When a {@link java.beans.PropertyChangeListenerProxy} object is added, 1864 * its property name is ignored, and the wrapped listener is added. 1865 * If {@code name} is {@code null} or {@code pcl} is {@code null}, 1866 * no exception is thrown and no action is performed. 1867 * 1868 * @param name The name of the property to listen for 1869 * @param pcl The property change listener 1870 * @see PropertyChangeSupport#addPropertyChangeListener(String, 1871 PropertyChangeListener) 1872 * @since 1.2 1873 */ addPropertyChangeListener(String name, PropertyChangeListener pcl)1874 public void addPropertyChangeListener(String name, PropertyChangeListener pcl) { 1875 desktopPropsSupport.addPropertyChangeListener(name, pcl); 1876 } 1877 1878 /** 1879 * Removes the specified property change listener for the named 1880 * desktop property. When a {@link java.beans.PropertyChangeListenerProxy} object 1881 * is removed, its property name is ignored, and 1882 * the wrapped listener is removed. 1883 * If {@code name} is {@code null} or {@code pcl} is {@code null}, 1884 * no exception is thrown and no action is performed. 1885 * 1886 * @param name The name of the property to remove 1887 * @param pcl The property change listener 1888 * @see PropertyChangeSupport#removePropertyChangeListener(String, 1889 PropertyChangeListener) 1890 * @since 1.2 1891 */ removePropertyChangeListener(String name, PropertyChangeListener pcl)1892 public void removePropertyChangeListener(String name, PropertyChangeListener pcl) { 1893 desktopPropsSupport.removePropertyChangeListener(name, pcl); 1894 } 1895 1896 /** 1897 * Returns an array of all the property change listeners 1898 * registered on this toolkit. The returned array 1899 * contains {@link java.beans.PropertyChangeListenerProxy} objects 1900 * that associate listeners with the names of desktop properties. 1901 * 1902 * @return all of this toolkit's {@link PropertyChangeListener} 1903 * objects wrapped in {@code java.beans.PropertyChangeListenerProxy} objects 1904 * or an empty array if no listeners are added 1905 * 1906 * @see PropertyChangeSupport#getPropertyChangeListeners() 1907 * @since 1.4 1908 */ getPropertyChangeListeners()1909 public PropertyChangeListener[] getPropertyChangeListeners() { 1910 return desktopPropsSupport.getPropertyChangeListeners(); 1911 } 1912 1913 /** 1914 * Returns an array of all property change listeners 1915 * associated with the specified name of a desktop property. 1916 * 1917 * @param propertyName the named property 1918 * @return all of the {@code PropertyChangeListener} objects 1919 * associated with the specified name of a desktop property 1920 * or an empty array if no such listeners are added 1921 * 1922 * @see PropertyChangeSupport#getPropertyChangeListeners(String) 1923 * @since 1.4 1924 */ getPropertyChangeListeners(String propertyName)1925 public PropertyChangeListener[] getPropertyChangeListeners(String propertyName) { 1926 return desktopPropsSupport.getPropertyChangeListeners(propertyName); 1927 } 1928 1929 protected final Map<String,Object> desktopProperties = 1930 new HashMap<String,Object>(); 1931 protected final PropertyChangeSupport desktopPropsSupport = 1932 Toolkit.createPropertyChangeSupport(this); 1933 1934 /** 1935 * Returns whether the always-on-top mode is supported by this toolkit. 1936 * To detect whether the always-on-top mode is supported for a 1937 * particular Window, use {@link Window#isAlwaysOnTopSupported}. 1938 * @return <code>true</code>, if current toolkit supports the always-on-top mode, 1939 * otherwise returns <code>false</code> 1940 * @see Window#isAlwaysOnTopSupported 1941 * @see Window#setAlwaysOnTop(boolean) 1942 * @since 1.6 1943 */ isAlwaysOnTopSupported()1944 public boolean isAlwaysOnTopSupported() { 1945 return true; 1946 } 1947 1948 /** 1949 * Returns whether the given modality type is supported by this toolkit. If 1950 * a dialog with unsupported modality type is created, then 1951 * <code>Dialog.ModalityType.MODELESS</code> is used instead. 1952 * 1953 * @param modalityType modality type to be checked for support by this toolkit 1954 * 1955 * @return <code>true</code>, if current toolkit supports given modality 1956 * type, <code>false</code> otherwise 1957 * 1958 * @see java.awt.Dialog.ModalityType 1959 * @see java.awt.Dialog#getModalityType 1960 * @see java.awt.Dialog#setModalityType 1961 * 1962 * @since 1.6 1963 */ isModalityTypeSupported(Dialog.ModalityType modalityType)1964 public abstract boolean isModalityTypeSupported(Dialog.ModalityType modalityType); 1965 1966 /** 1967 * Returns whether the given modal exclusion type is supported by this 1968 * toolkit. If an unsupported modal exclusion type property is set on a window, 1969 * then <code>Dialog.ModalExclusionType.NO_EXCLUDE</code> is used instead. 1970 * 1971 * @param modalExclusionType modal exclusion type to be checked for support by this toolkit 1972 * 1973 * @return <code>true</code>, if current toolkit supports given modal exclusion 1974 * type, <code>false</code> otherwise 1975 * 1976 * @see java.awt.Dialog.ModalExclusionType 1977 * @see java.awt.Window#getModalExclusionType 1978 * @see java.awt.Window#setModalExclusionType 1979 * 1980 * @since 1.6 1981 */ isModalExclusionTypeSupported(Dialog.ModalExclusionType modalExclusionType)1982 public abstract boolean isModalExclusionTypeSupported(Dialog.ModalExclusionType modalExclusionType); 1983 1984 // 8014718: logging has been removed from SunToolkit 1985 1986 private static final int LONG_BITS = 64; 1987 private int[] calls = new int[LONG_BITS]; 1988 private static volatile long enabledOnToolkitMask; 1989 private AWTEventListener eventListener = null; 1990 private WeakHashMap<AWTEventListener, SelectiveAWTEventListener> listener2SelectiveListener = new WeakHashMap<>(); 1991 1992 /* 1993 * Extracts a "pure" AWTEventListener from a AWTEventListenerProxy, 1994 * if the listener is proxied. 1995 */ deProxyAWTEventListener(AWTEventListener l)1996 static private AWTEventListener deProxyAWTEventListener(AWTEventListener l) 1997 { 1998 AWTEventListener localL = l; 1999 2000 if (localL == null) { 2001 return null; 2002 } 2003 // if user passed in a AWTEventListenerProxy object, extract 2004 // the listener 2005 if (l instanceof AWTEventListenerProxy) { 2006 localL = ((AWTEventListenerProxy)l).getListener(); 2007 } 2008 return localL; 2009 } 2010 2011 /** 2012 * Adds an AWTEventListener to receive all AWTEvents dispatched 2013 * system-wide that conform to the given <code>eventMask</code>. 2014 * <p> 2015 * First, if there is a security manager, its <code>checkPermission</code> 2016 * method is called with an 2017 * <code>AWTPermission("listenToAllAWTEvents")</code> permission. 2018 * This may result in a SecurityException. 2019 * <p> 2020 * <code>eventMask</code> is a bitmask of event types to receive. 2021 * It is constructed by bitwise OR-ing together the event masks 2022 * defined in <code>AWTEvent</code>. 2023 * <p> 2024 * Note: event listener use is not recommended for normal 2025 * application use, but are intended solely to support special 2026 * purpose facilities including support for accessibility, 2027 * event record/playback, and diagnostic tracing. 2028 * 2029 * If listener is null, no exception is thrown and no action is performed. 2030 * 2031 * @param listener the event listener. 2032 * @param eventMask the bitmask of event types to receive 2033 * @throws SecurityException 2034 * if a security manager exists and its 2035 * <code>checkPermission</code> method doesn't allow the operation. 2036 * @see #removeAWTEventListener 2037 * @see #getAWTEventListeners 2038 * @see SecurityManager#checkPermission 2039 * @see java.awt.AWTEvent 2040 * @see java.awt.AWTPermission 2041 * @see java.awt.event.AWTEventListener 2042 * @see java.awt.event.AWTEventListenerProxy 2043 * @since 1.2 2044 */ addAWTEventListener(AWTEventListener listener, long eventMask)2045 public void addAWTEventListener(AWTEventListener listener, long eventMask) { 2046 AWTEventListener localL = deProxyAWTEventListener(listener); 2047 2048 if (localL == null) { 2049 return; 2050 } 2051 SecurityManager security = System.getSecurityManager(); 2052 if (security != null) { 2053 security.checkPermission(SecurityConstants.AWT.ALL_AWT_EVENTS_PERMISSION); 2054 } 2055 synchronized (this) { 2056 SelectiveAWTEventListener selectiveListener = 2057 listener2SelectiveListener.get(localL); 2058 2059 if (selectiveListener == null) { 2060 // Create a new selectiveListener. 2061 selectiveListener = new SelectiveAWTEventListener(localL, 2062 eventMask); 2063 listener2SelectiveListener.put(localL, selectiveListener); 2064 eventListener = ToolkitEventMulticaster.add(eventListener, 2065 selectiveListener); 2066 } 2067 // OR the eventMask into the selectiveListener's event mask. 2068 selectiveListener.orEventMasks(eventMask); 2069 2070 enabledOnToolkitMask |= eventMask; 2071 2072 long mask = eventMask; 2073 for (int i=0; i<LONG_BITS; i++) { 2074 // If no bits are set, break out of loop. 2075 if (mask == 0) { 2076 break; 2077 } 2078 if ((mask & 1L) != 0) { // Always test bit 0. 2079 calls[i]++; 2080 } 2081 mask >>>= 1; // Right shift, fill with zeros on left. 2082 } 2083 } 2084 } 2085 2086 /** 2087 * Removes an AWTEventListener from receiving dispatched AWTEvents. 2088 * <p> 2089 * First, if there is a security manager, its <code>checkPermission</code> 2090 * method is called with an 2091 * <code>AWTPermission("listenToAllAWTEvents")</code> permission. 2092 * This may result in a SecurityException. 2093 * <p> 2094 * Note: event listener use is not recommended for normal 2095 * application use, but are intended solely to support special 2096 * purpose facilities including support for accessibility, 2097 * event record/playback, and diagnostic tracing. 2098 * 2099 * If listener is null, no exception is thrown and no action is performed. 2100 * 2101 * @param listener the event listener. 2102 * @throws SecurityException 2103 * if a security manager exists and its 2104 * <code>checkPermission</code> method doesn't allow the operation. 2105 * @see #addAWTEventListener 2106 * @see #getAWTEventListeners 2107 * @see SecurityManager#checkPermission 2108 * @see java.awt.AWTEvent 2109 * @see java.awt.AWTPermission 2110 * @see java.awt.event.AWTEventListener 2111 * @see java.awt.event.AWTEventListenerProxy 2112 * @since 1.2 2113 */ removeAWTEventListener(AWTEventListener listener)2114 public void removeAWTEventListener(AWTEventListener listener) { 2115 AWTEventListener localL = deProxyAWTEventListener(listener); 2116 2117 if (listener == null) { 2118 return; 2119 } 2120 SecurityManager security = System.getSecurityManager(); 2121 if (security != null) { 2122 security.checkPermission(SecurityConstants.AWT.ALL_AWT_EVENTS_PERMISSION); 2123 } 2124 2125 synchronized (this) { 2126 SelectiveAWTEventListener selectiveListener = 2127 listener2SelectiveListener.get(localL); 2128 2129 if (selectiveListener != null) { 2130 listener2SelectiveListener.remove(localL); 2131 int[] listenerCalls = selectiveListener.getCalls(); 2132 for (int i=0; i<LONG_BITS; i++) { 2133 calls[i] -= listenerCalls[i]; 2134 assert calls[i] >= 0: "Negative Listeners count"; 2135 2136 if (calls[i] == 0) { 2137 enabledOnToolkitMask &= ~(1L<<i); 2138 } 2139 } 2140 } 2141 eventListener = ToolkitEventMulticaster.remove(eventListener, 2142 (selectiveListener == null) ? localL : selectiveListener); 2143 } 2144 } 2145 enabledOnToolkit(long eventMask)2146 static boolean enabledOnToolkit(long eventMask) { 2147 return (enabledOnToolkitMask & eventMask) != 0; 2148 } 2149 countAWTEventListeners(long eventMask)2150 synchronized int countAWTEventListeners(long eventMask) { 2151 int ci = 0; 2152 for (; eventMask != 0; eventMask >>>= 1, ci++) { 2153 } 2154 ci--; 2155 return calls[ci]; 2156 } 2157 /** 2158 * Returns an array of all the <code>AWTEventListener</code>s 2159 * registered on this toolkit. 2160 * If there is a security manager, its {@code checkPermission} 2161 * method is called with an 2162 * {@code AWTPermission("listenToAllAWTEvents")} permission. 2163 * This may result in a SecurityException. 2164 * Listeners can be returned 2165 * within <code>AWTEventListenerProxy</code> objects, which also contain 2166 * the event mask for the given listener. 2167 * Note that listener objects 2168 * added multiple times appear only once in the returned array. 2169 * 2170 * @return all of the <code>AWTEventListener</code>s or an empty 2171 * array if no listeners are currently registered 2172 * @throws SecurityException 2173 * if a security manager exists and its 2174 * <code>checkPermission</code> method doesn't allow the operation. 2175 * @see #addAWTEventListener 2176 * @see #removeAWTEventListener 2177 * @see SecurityManager#checkPermission 2178 * @see java.awt.AWTEvent 2179 * @see java.awt.AWTPermission 2180 * @see java.awt.event.AWTEventListener 2181 * @see java.awt.event.AWTEventListenerProxy 2182 * @since 1.4 2183 */ getAWTEventListeners()2184 public AWTEventListener[] getAWTEventListeners() { 2185 SecurityManager security = System.getSecurityManager(); 2186 if (security != null) { 2187 security.checkPermission(SecurityConstants.AWT.ALL_AWT_EVENTS_PERMISSION); 2188 } 2189 synchronized (this) { 2190 EventListener[] la = ToolkitEventMulticaster.getListeners(eventListener,AWTEventListener.class); 2191 2192 AWTEventListener[] ret = new AWTEventListener[la.length]; 2193 for (int i = 0; i < la.length; i++) { 2194 SelectiveAWTEventListener sael = (SelectiveAWTEventListener)la[i]; 2195 AWTEventListener tempL = sael.getListener(); 2196 //assert tempL is not an AWTEventListenerProxy - we should 2197 // have weeded them all out 2198 // don't want to wrap a proxy inside a proxy 2199 ret[i] = new AWTEventListenerProxy(sael.getEventMask(), tempL); 2200 } 2201 return ret; 2202 } 2203 } 2204 2205 /** 2206 * Returns an array of all the <code>AWTEventListener</code>s 2207 * registered on this toolkit which listen to all of the event 2208 * types specified in the {@code eventMask} argument. 2209 * If there is a security manager, its {@code checkPermission} 2210 * method is called with an 2211 * {@code AWTPermission("listenToAllAWTEvents")} permission. 2212 * This may result in a SecurityException. 2213 * Listeners can be returned 2214 * within <code>AWTEventListenerProxy</code> objects, which also contain 2215 * the event mask for the given listener. 2216 * Note that listener objects 2217 * added multiple times appear only once in the returned array. 2218 * 2219 * @param eventMask the bitmask of event types to listen for 2220 * @return all of the <code>AWTEventListener</code>s registered 2221 * on this toolkit for the specified 2222 * event types, or an empty array if no such listeners 2223 * are currently registered 2224 * @throws SecurityException 2225 * if a security manager exists and its 2226 * <code>checkPermission</code> method doesn't allow the operation. 2227 * @see #addAWTEventListener 2228 * @see #removeAWTEventListener 2229 * @see SecurityManager#checkPermission 2230 * @see java.awt.AWTEvent 2231 * @see java.awt.AWTPermission 2232 * @see java.awt.event.AWTEventListener 2233 * @see java.awt.event.AWTEventListenerProxy 2234 * @since 1.4 2235 */ getAWTEventListeners(long eventMask)2236 public AWTEventListener[] getAWTEventListeners(long eventMask) { 2237 SecurityManager security = System.getSecurityManager(); 2238 if (security != null) { 2239 security.checkPermission(SecurityConstants.AWT.ALL_AWT_EVENTS_PERMISSION); 2240 } 2241 synchronized (this) { 2242 EventListener[] la = ToolkitEventMulticaster.getListeners(eventListener,AWTEventListener.class); 2243 2244 java.util.List<AWTEventListenerProxy> list = new ArrayList<>(la.length); 2245 2246 for (int i = 0; i < la.length; i++) { 2247 SelectiveAWTEventListener sael = (SelectiveAWTEventListener)la[i]; 2248 if ((sael.getEventMask() & eventMask) == eventMask) { 2249 //AWTEventListener tempL = sael.getListener(); 2250 list.add(new AWTEventListenerProxy(sael.getEventMask(), 2251 sael.getListener())); 2252 } 2253 } 2254 return list.toArray(new AWTEventListener[0]); 2255 } 2256 } 2257 2258 /* 2259 * This method notifies any AWTEventListeners that an event 2260 * is about to be dispatched. 2261 * 2262 * @param theEvent the event which will be dispatched. 2263 */ notifyAWTEventListeners(AWTEvent theEvent)2264 void notifyAWTEventListeners(AWTEvent theEvent) { 2265 // This is a workaround for headless toolkits. It would be 2266 // better to override this method but it is declared package private. 2267 // "this instanceof" syntax defeats polymorphism. 2268 // --mm, 03/03/00 2269 if (this instanceof HeadlessToolkit) { 2270 ((HeadlessToolkit)this).getUnderlyingToolkit() 2271 .notifyAWTEventListeners(theEvent); 2272 return; 2273 } 2274 2275 AWTEventListener eventListener = this.eventListener; 2276 if (eventListener != null) { 2277 eventListener.eventDispatched(theEvent); 2278 } 2279 } 2280 2281 static private class ToolkitEventMulticaster extends AWTEventMulticaster 2282 implements AWTEventListener { 2283 // Implementation cloned from AWTEventMulticaster. 2284 ToolkitEventMulticaster(AWTEventListener a, AWTEventListener b)2285 ToolkitEventMulticaster(AWTEventListener a, AWTEventListener b) { 2286 super(a, b); 2287 } 2288 add(AWTEventListener a, AWTEventListener b)2289 static AWTEventListener add(AWTEventListener a, 2290 AWTEventListener b) { 2291 if (a == null) return b; 2292 if (b == null) return a; 2293 return new ToolkitEventMulticaster(a, b); 2294 } 2295 remove(AWTEventListener l, AWTEventListener oldl)2296 static AWTEventListener remove(AWTEventListener l, 2297 AWTEventListener oldl) { 2298 return (AWTEventListener) removeInternal(l, oldl); 2299 } 2300 2301 // #4178589: must overload remove(EventListener) to call our add() 2302 // instead of the static addInternal() so we allocate a 2303 // ToolkitEventMulticaster instead of an AWTEventMulticaster. 2304 // Note: this method is called by AWTEventListener.removeInternal(), 2305 // so its method signature must match AWTEventListener.remove(). remove(EventListener oldl)2306 protected EventListener remove(EventListener oldl) { 2307 if (oldl == a) return b; 2308 if (oldl == b) return a; 2309 AWTEventListener a2 = (AWTEventListener)removeInternal(a, oldl); 2310 AWTEventListener b2 = (AWTEventListener)removeInternal(b, oldl); 2311 if (a2 == a && b2 == b) { 2312 return this; // it's not here 2313 } 2314 return add(a2, b2); 2315 } 2316 eventDispatched(AWTEvent event)2317 public void eventDispatched(AWTEvent event) { 2318 ((AWTEventListener)a).eventDispatched(event); 2319 ((AWTEventListener)b).eventDispatched(event); 2320 } 2321 } 2322 2323 private class SelectiveAWTEventListener implements AWTEventListener { 2324 AWTEventListener listener; 2325 private long eventMask; 2326 // This array contains the number of times to call the eventlistener 2327 // for each event type. 2328 int[] calls = new int[Toolkit.LONG_BITS]; 2329 getListener()2330 public AWTEventListener getListener() {return listener;} getEventMask()2331 public long getEventMask() {return eventMask;} getCalls()2332 public int[] getCalls() {return calls;} 2333 orEventMasks(long mask)2334 public void orEventMasks(long mask) { 2335 eventMask |= mask; 2336 // For each event bit set in mask, increment its call count. 2337 for (int i=0; i<Toolkit.LONG_BITS; i++) { 2338 // If no bits are set, break out of loop. 2339 if (mask == 0) { 2340 break; 2341 } 2342 if ((mask & 1L) != 0) { // Always test bit 0. 2343 calls[i]++; 2344 } 2345 mask >>>= 1; // Right shift, fill with zeros on left. 2346 } 2347 } 2348 SelectiveAWTEventListener(AWTEventListener l, long mask)2349 SelectiveAWTEventListener(AWTEventListener l, long mask) { 2350 listener = l; 2351 eventMask = mask; 2352 } 2353 eventDispatched(AWTEvent event)2354 public void eventDispatched(AWTEvent event) { 2355 long eventBit = 0; // Used to save the bit of the event type. 2356 if (((eventBit = eventMask & AWTEvent.COMPONENT_EVENT_MASK) != 0 && 2357 event.id >= ComponentEvent.COMPONENT_FIRST && 2358 event.id <= ComponentEvent.COMPONENT_LAST) 2359 || ((eventBit = eventMask & AWTEvent.CONTAINER_EVENT_MASK) != 0 && 2360 event.id >= ContainerEvent.CONTAINER_FIRST && 2361 event.id <= ContainerEvent.CONTAINER_LAST) 2362 || ((eventBit = eventMask & AWTEvent.FOCUS_EVENT_MASK) != 0 && 2363 event.id >= FocusEvent.FOCUS_FIRST && 2364 event.id <= FocusEvent.FOCUS_LAST) 2365 || ((eventBit = eventMask & AWTEvent.KEY_EVENT_MASK) != 0 && 2366 event.id >= KeyEvent.KEY_FIRST && 2367 event.id <= KeyEvent.KEY_LAST) 2368 || ((eventBit = eventMask & AWTEvent.MOUSE_WHEEL_EVENT_MASK) != 0 && 2369 event.id == MouseEvent.MOUSE_WHEEL) 2370 || ((eventBit = eventMask & AWTEvent.MOUSE_MOTION_EVENT_MASK) != 0 && 2371 (event.id == MouseEvent.MOUSE_MOVED || 2372 event.id == MouseEvent.MOUSE_DRAGGED)) 2373 || ((eventBit = eventMask & AWTEvent.MOUSE_EVENT_MASK) != 0 && 2374 event.id != MouseEvent.MOUSE_MOVED && 2375 event.id != MouseEvent.MOUSE_DRAGGED && 2376 event.id != MouseEvent.MOUSE_WHEEL && 2377 event.id >= MouseEvent.MOUSE_FIRST && 2378 event.id <= MouseEvent.MOUSE_LAST) 2379 || ((eventBit = eventMask & AWTEvent.WINDOW_EVENT_MASK) != 0 && 2380 (event.id >= WindowEvent.WINDOW_FIRST && 2381 event.id <= WindowEvent.WINDOW_LAST)) 2382 || ((eventBit = eventMask & AWTEvent.ACTION_EVENT_MASK) != 0 && 2383 event.id >= ActionEvent.ACTION_FIRST && 2384 event.id <= ActionEvent.ACTION_LAST) 2385 || ((eventBit = eventMask & AWTEvent.ADJUSTMENT_EVENT_MASK) != 0 && 2386 event.id >= AdjustmentEvent.ADJUSTMENT_FIRST && 2387 event.id <= AdjustmentEvent.ADJUSTMENT_LAST) 2388 || ((eventBit = eventMask & AWTEvent.ITEM_EVENT_MASK) != 0 && 2389 event.id >= ItemEvent.ITEM_FIRST && 2390 event.id <= ItemEvent.ITEM_LAST) 2391 || ((eventBit = eventMask & AWTEvent.TEXT_EVENT_MASK) != 0 && 2392 event.id >= TextEvent.TEXT_FIRST && 2393 event.id <= TextEvent.TEXT_LAST) 2394 || ((eventBit = eventMask & AWTEvent.INPUT_METHOD_EVENT_MASK) != 0 && 2395 event.id >= InputMethodEvent.INPUT_METHOD_FIRST && 2396 event.id <= InputMethodEvent.INPUT_METHOD_LAST) 2397 || ((eventBit = eventMask & AWTEvent.PAINT_EVENT_MASK) != 0 && 2398 event.id >= PaintEvent.PAINT_FIRST && 2399 event.id <= PaintEvent.PAINT_LAST) 2400 || ((eventBit = eventMask & AWTEvent.INVOCATION_EVENT_MASK) != 0 && 2401 event.id >= InvocationEvent.INVOCATION_FIRST && 2402 event.id <= InvocationEvent.INVOCATION_LAST) 2403 || ((eventBit = eventMask & AWTEvent.HIERARCHY_EVENT_MASK) != 0 && 2404 event.id == HierarchyEvent.HIERARCHY_CHANGED) 2405 || ((eventBit = eventMask & AWTEvent.HIERARCHY_BOUNDS_EVENT_MASK) != 0 && 2406 (event.id == HierarchyEvent.ANCESTOR_MOVED || 2407 event.id == HierarchyEvent.ANCESTOR_RESIZED)) 2408 || ((eventBit = eventMask & AWTEvent.WINDOW_STATE_EVENT_MASK) != 0 && 2409 event.id == WindowEvent.WINDOW_STATE_CHANGED) 2410 || ((eventBit = eventMask & AWTEvent.WINDOW_FOCUS_EVENT_MASK) != 0 && 2411 (event.id == WindowEvent.WINDOW_GAINED_FOCUS || 2412 event.id == WindowEvent.WINDOW_LOST_FOCUS)) 2413 || ((eventBit = eventMask & sun.awt.SunToolkit.GRAB_EVENT_MASK) != 0 && 2414 (event instanceof sun.awt.UngrabEvent))) { 2415 // Get the index of the call count for this event type. 2416 // Instead of using Math.log(...) we will calculate it with 2417 // bit shifts. That's what previous implementation looked like: 2418 // 2419 // int ci = (int) (Math.log(eventBit)/Math.log(2)); 2420 int ci = 0; 2421 for (long eMask = eventBit; eMask != 0; eMask >>>= 1, ci++) { 2422 } 2423 ci--; 2424 // Call the listener as many times as it was added for this 2425 // event type. 2426 for (int i=0; i<calls[ci]; i++) { 2427 listener.eventDispatched(event); 2428 } 2429 } 2430 } 2431 } 2432 2433 /** 2434 * Returns a map of visual attributes for the abstract level description 2435 * of the given input method highlight, or null if no mapping is found. 2436 * The style field of the input method highlight is ignored. The map 2437 * returned is unmodifiable. 2438 * @param highlight input method highlight 2439 * @return style attribute map, or <code>null</code> 2440 * @exception HeadlessException if 2441 * <code>GraphicsEnvironment.isHeadless</code> returns true 2442 * @see java.awt.GraphicsEnvironment#isHeadless 2443 * @since 1.3 2444 */ 2445 public abstract Map<java.awt.font.TextAttribute,?> mapInputMethodHighlight(InputMethodHighlight highlight)2446 mapInputMethodHighlight(InputMethodHighlight highlight) 2447 throws HeadlessException; 2448 createPropertyChangeSupport(Toolkit toolkit)2449 private static PropertyChangeSupport createPropertyChangeSupport(Toolkit toolkit) { 2450 if (toolkit instanceof SunToolkit || toolkit instanceof HeadlessToolkit) { 2451 return new DesktopPropertyChangeSupport(toolkit); 2452 } else { 2453 return new PropertyChangeSupport(toolkit); 2454 } 2455 } 2456 2457 @SuppressWarnings("serial") 2458 private static class DesktopPropertyChangeSupport extends PropertyChangeSupport { 2459 2460 private static final StringBuilder PROP_CHANGE_SUPPORT_KEY = 2461 new StringBuilder("desktop property change support key"); 2462 private final Object source; 2463 DesktopPropertyChangeSupport(Object sourceBean)2464 public DesktopPropertyChangeSupport(Object sourceBean) { 2465 super(sourceBean); 2466 source = sourceBean; 2467 } 2468 2469 @Override addPropertyChangeListener( String propertyName, PropertyChangeListener listener)2470 public synchronized void addPropertyChangeListener( 2471 String propertyName, 2472 PropertyChangeListener listener) 2473 { 2474 PropertyChangeSupport pcs = (PropertyChangeSupport) 2475 AppContext.getAppContext().get(PROP_CHANGE_SUPPORT_KEY); 2476 if (null == pcs) { 2477 pcs = new PropertyChangeSupport(source); 2478 AppContext.getAppContext().put(PROP_CHANGE_SUPPORT_KEY, pcs); 2479 } 2480 pcs.addPropertyChangeListener(propertyName, listener); 2481 } 2482 2483 @Override removePropertyChangeListener( String propertyName, PropertyChangeListener listener)2484 public synchronized void removePropertyChangeListener( 2485 String propertyName, 2486 PropertyChangeListener listener) 2487 { 2488 PropertyChangeSupport pcs = (PropertyChangeSupport) 2489 AppContext.getAppContext().get(PROP_CHANGE_SUPPORT_KEY); 2490 if (null != pcs) { 2491 pcs.removePropertyChangeListener(propertyName, listener); 2492 } 2493 } 2494 2495 @Override getPropertyChangeListeners()2496 public synchronized PropertyChangeListener[] getPropertyChangeListeners() 2497 { 2498 PropertyChangeSupport pcs = (PropertyChangeSupport) 2499 AppContext.getAppContext().get(PROP_CHANGE_SUPPORT_KEY); 2500 if (null != pcs) { 2501 return pcs.getPropertyChangeListeners(); 2502 } else { 2503 return new PropertyChangeListener[0]; 2504 } 2505 } 2506 2507 @Override getPropertyChangeListeners(String propertyName)2508 public synchronized PropertyChangeListener[] getPropertyChangeListeners(String propertyName) 2509 { 2510 PropertyChangeSupport pcs = (PropertyChangeSupport) 2511 AppContext.getAppContext().get(PROP_CHANGE_SUPPORT_KEY); 2512 if (null != pcs) { 2513 return pcs.getPropertyChangeListeners(propertyName); 2514 } else { 2515 return new PropertyChangeListener[0]; 2516 } 2517 } 2518 2519 @Override addPropertyChangeListener(PropertyChangeListener listener)2520 public synchronized void addPropertyChangeListener(PropertyChangeListener listener) { 2521 PropertyChangeSupport pcs = (PropertyChangeSupport) 2522 AppContext.getAppContext().get(PROP_CHANGE_SUPPORT_KEY); 2523 if (null == pcs) { 2524 pcs = new PropertyChangeSupport(source); 2525 AppContext.getAppContext().put(PROP_CHANGE_SUPPORT_KEY, pcs); 2526 } 2527 pcs.addPropertyChangeListener(listener); 2528 } 2529 2530 @Override removePropertyChangeListener(PropertyChangeListener listener)2531 public synchronized void removePropertyChangeListener(PropertyChangeListener listener) { 2532 PropertyChangeSupport pcs = (PropertyChangeSupport) 2533 AppContext.getAppContext().get(PROP_CHANGE_SUPPORT_KEY); 2534 if (null != pcs) { 2535 pcs.removePropertyChangeListener(listener); 2536 } 2537 } 2538 2539 /* 2540 * we do expect that all other fireXXX() methods of java.beans.PropertyChangeSupport 2541 * use this method. If this will be changed we will need to change this class. 2542 */ 2543 @Override firePropertyChange(final PropertyChangeEvent evt)2544 public void firePropertyChange(final PropertyChangeEvent evt) { 2545 Object oldValue = evt.getOldValue(); 2546 Object newValue = evt.getNewValue(); 2547 String propertyName = evt.getPropertyName(); 2548 if (oldValue != null && newValue != null && oldValue.equals(newValue)) { 2549 return; 2550 } 2551 Runnable updater = new Runnable() { 2552 public void run() { 2553 PropertyChangeSupport pcs = (PropertyChangeSupport) 2554 AppContext.getAppContext().get(PROP_CHANGE_SUPPORT_KEY); 2555 if (null != pcs) { 2556 pcs.firePropertyChange(evt); 2557 } 2558 } 2559 }; 2560 final AppContext currentAppContext = AppContext.getAppContext(); 2561 for (AppContext appContext : AppContext.getAppContexts()) { 2562 if (null == appContext || appContext.isDisposed()) { 2563 continue; 2564 } 2565 if (currentAppContext == appContext) { 2566 updater.run(); 2567 } else { 2568 final PeerEvent e = new PeerEvent(source, updater, PeerEvent.ULTIMATE_PRIORITY_EVENT); 2569 SunToolkit.postEvent(appContext, e); 2570 } 2571 } 2572 } 2573 } 2574 2575 /** 2576 * Reports whether events from extra mouse buttons are allowed to be processed and posted into 2577 * {@code EventQueue}. 2578 * <br> 2579 * To change the returned value it is necessary to set the {@code sun.awt.enableExtraMouseButtons} 2580 * property before the {@code Toolkit} class initialization. This setting could be done on the application 2581 * startup by the following command: 2582 * <pre> 2583 * java -Dsun.awt.enableExtraMouseButtons=false Application 2584 * </pre> 2585 * Alternatively, the property could be set in the application by using the following code: 2586 * <pre> 2587 * System.setProperty("sun.awt.enableExtraMouseButtons", "true"); 2588 * </pre> 2589 * before the {@code Toolkit} class initialization. 2590 * If not set by the time of the {@code Toolkit} class initialization, this property will be 2591 * initialized with {@code true}. 2592 * Changing this value after the {@code Toolkit} class initialization will have no effect. 2593 * <p> 2594 * @exception HeadlessException if GraphicsEnvironment.isHeadless() returns true 2595 * @return {@code true} if events from extra mouse buttons are allowed to be processed and posted; 2596 * {@code false} otherwise 2597 * @see System#getProperty(String propertyName) 2598 * @see System#setProperty(String propertyName, String value) 2599 * @see java.awt.EventQueue 2600 * @since 1.7 2601 */ areExtraMouseButtonsEnabled()2602 public boolean areExtraMouseButtonsEnabled() throws HeadlessException { 2603 GraphicsEnvironment.checkHeadless(); 2604 2605 return Toolkit.getDefaultToolkit().areExtraMouseButtonsEnabled(); 2606 } 2607 } 2608