1 /*
2 * Copyright 1995-2008 Sun Microsystems, Inc. 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. Sun designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
22 * CA 95054 USA or visit www.sun.com if you need additional information or
23 * have any questions.
24 */
25
26 package java.awt;
27
28 import java.beans.PropertyChangeEvent;
29 import java.util.MissingResourceException;
30 import java.util.Properties;
31 import java.util.ResourceBundle;
32 import java.util.StringTokenizer;
33 import java.awt.event.*;
34 import java.awt.peer.*;
35 import java.awt.im.InputMethodHighlight;
36 import java.awt.image.ImageObserver;
37 import java.awt.image.ImageProducer;
38 import java.awt.image.ColorModel;
39 import java.awt.datatransfer.Clipboard;
40 import java.awt.dnd.DragSource;
41 import java.awt.dnd.DragGestureRecognizer;
42 import java.awt.dnd.DragGestureEvent;
43 import java.awt.dnd.DragGestureListener;
44 import java.awt.dnd.InvalidDnDOperationException;
45 import java.awt.dnd.peer.DragSourceContextPeer;
46 import java.net.URL;
47 import java.io.File;
48 import java.io.FileInputStream;
49
50 import java.util.*;
51 import sun.util.logging.PlatformLogger;
52
53 import java.beans.PropertyChangeListener;
54 import java.beans.PropertyChangeSupport;
55 import sun.awt.AppContext;
56
57 import sun.awt.HeadlessToolkit;
58 import sun.awt.NullComponentPeer;
59 import sun.awt.PeerEvent;
60 import sun.awt.SunToolkit;
61 import sun.security.util.SecurityConstants;
62
63 import sun.util.CoreResourceBundleControl;
64
65 /**
66 * This class is the abstract superclass of all actual
67 * implementations of the Abstract Window Toolkit. Subclasses of
68 * the <code>Toolkit</code> class are used to bind the various components
69 * to particular native toolkit implementations.
70 * <p>
71 * Many GUI events may be delivered to user
72 * asynchronously, if the opposite is not specified explicitly.
73 * As well as
74 * many GUI operations may be performed asynchronously.
75 * This fact means that if the state of a component is set, and then
76 * the state immediately queried, the returned value may not yet
77 * reflect the requested change. This behavior includes, but is not
78 * limited to:
79 * <ul>
80 * <li>Scrolling to a specified position.
81 * <br>For example, calling <code>ScrollPane.setScrollPosition</code>
82 * and then <code>getScrollPosition</code> may return an incorrect
83 * value if the original request has not yet been processed.
84 * <p>
85 * <li>Moving the focus from one component to another.
86 * <br>For more information, see
87 * <a href="http://java.sun.com/docs/books/tutorial/uiswing/misc/focus.html#transferTiming">Timing
88 * Focus Transfers</a>, a section in
89 * <a href="http://java.sun.com/docs/books/tutorial/uiswing/">The Swing
90 * Tutorial</a>.
91 * <p>
92 * <li>Making a top-level container visible.
93 * <br>Calling <code>setVisible(true)</code> on a <code>Window</code>,
94 * <code>Frame</code> or <code>Dialog</code> may occur
95 * asynchronously.
96 * <p>
97 * <li>Setting the size or location of a top-level container.
98 * <br>Calls to <code>setSize</code>, <code>setBounds</code> or
99 * <code>setLocation</code> on a <code>Window</code>,
100 * <code>Frame</code> or <code>Dialog</code> are forwarded
101 * to the underlying window management system and may be
102 * ignored or modified. See {@link java.awt.Window} for
103 * more information.
104 * </ul>
105 * <p>
106 * Most applications should not call any of the methods in this
107 * class directly. The methods defined by <code>Toolkit</code> are
108 * the "glue" that joins the platform-independent classes in the
109 * <code>java.awt</code> package with their counterparts in
110 * <code>java.awt.peer</code>. Some methods defined by
111 * <code>Toolkit</code> query the native operating system directly.
112 *
113 * @author Sami Shaio
114 * @author Arthur van Hoff
115 * @author Fred Ecks
116 * @since JDK1.0
117 */
118 public abstract class Toolkit {
119
120 /**
121 * Creates this toolkit's implementation of the <code>Desktop</code>
122 * using the specified peer interface.
123 * @param target the desktop to be implemented
124 * @return this toolkit's implementation of the <code>Desktop</code>
125 * @exception HeadlessException if GraphicsEnvironment.isHeadless()
126 * returns true
127 * @see java.awt.GraphicsEnvironment#isHeadless
128 * @see java.awt.Desktop
129 * @see java.awt.peer.DesktopPeer
130 * @since 1.6
131 */
132 protected abstract DesktopPeer createDesktopPeer(Desktop target)
133 throws HeadlessException;
134
135
136 /**
137 * Creates this toolkit's implementation of <code>Button</code> using
138 * the specified peer interface.
139 * @param target the button to be implemented.
140 * @return this toolkit's implementation of <code>Button</code>.
141 * @exception HeadlessException if GraphicsEnvironment.isHeadless()
142 * returns true
143 * @see java.awt.GraphicsEnvironment#isHeadless
144 * @see java.awt.Button
145 * @see java.awt.peer.ButtonPeer
146 */
147 protected abstract ButtonPeer createButton(Button target)
148 throws HeadlessException;
149
150 /**
151 * Creates this toolkit's implementation of <code>TextField</code> using
152 * the specified peer interface.
153 * @param target the text field to be implemented.
154 * @return this toolkit's implementation of <code>TextField</code>.
155 * @exception HeadlessException if GraphicsEnvironment.isHeadless()
156 * returns true
157 * @see java.awt.GraphicsEnvironment#isHeadless
158 * @see java.awt.TextField
159 * @see java.awt.peer.TextFieldPeer
160 */
161 protected abstract TextFieldPeer createTextField(TextField target)
162 throws HeadlessException;
163
164 /**
165 * Creates this toolkit's implementation of <code>Label</code> using
166 * the specified peer interface.
167 * @param target the label to be implemented.
168 * @return this toolkit's implementation of <code>Label</code>.
169 * @exception HeadlessException if GraphicsEnvironment.isHeadless()
170 * returns true
171 * @see java.awt.GraphicsEnvironment#isHeadless
172 * @see java.awt.Label
173 * @see java.awt.peer.LabelPeer
174 */
175 protected abstract LabelPeer createLabel(Label target)
176 throws HeadlessException;
177
178 /**
179 * Creates this toolkit's implementation of <code>List</code> using
180 * the specified peer interface.
181 * @param target the list to be implemented.
182 * @return this toolkit's implementation of <code>List</code>.
183 * @exception HeadlessException if GraphicsEnvironment.isHeadless()
184 * returns true
185 * @see java.awt.GraphicsEnvironment#isHeadless
186 * @see java.awt.List
187 * @see java.awt.peer.ListPeer
188 */
189 protected abstract ListPeer createList(java.awt.List target)
190 throws HeadlessException;
191
192 /**
193 * Creates this toolkit's implementation of <code>Checkbox</code> using
194 * the specified peer interface.
195 * @param target the check box to be implemented.
196 * @return this toolkit's implementation of <code>Checkbox</code>.
197 * @exception HeadlessException if GraphicsEnvironment.isHeadless()
198 * returns true
199 * @see java.awt.GraphicsEnvironment#isHeadless
200 * @see java.awt.Checkbox
201 * @see java.awt.peer.CheckboxPeer
202 */
203 protected abstract CheckboxPeer createCheckbox(Checkbox target)
204 throws HeadlessException;
205
206 /**
207 * Creates this toolkit's implementation of <code>Scrollbar</code> using
208 * the specified peer interface.
209 * @param target the scroll bar to be implemented.
210 * @return this toolkit's implementation of <code>Scrollbar</code>.
211 * @exception HeadlessException if GraphicsEnvironment.isHeadless()
212 * returns true
213 * @see java.awt.GraphicsEnvironment#isHeadless
214 * @see java.awt.Scrollbar
215 * @see java.awt.peer.ScrollbarPeer
216 */
217 protected abstract ScrollbarPeer createScrollbar(Scrollbar target)
218 throws HeadlessException;
219
220 /**
221 * Creates this toolkit's implementation of <code>ScrollPane</code> using
222 * the specified peer interface.
223 * @param target the scroll pane to be implemented.
224 * @return this toolkit's implementation of <code>ScrollPane</code>.
225 * @exception HeadlessException if GraphicsEnvironment.isHeadless()
226 * returns true
227 * @see java.awt.GraphicsEnvironment#isHeadless
228 * @see java.awt.ScrollPane
229 * @see java.awt.peer.ScrollPanePeer
230 * @since JDK1.1
231 */
232 protected abstract ScrollPanePeer createScrollPane(ScrollPane target)
233 throws HeadlessException;
234
235 /**
236 * Creates this toolkit's implementation of <code>TextArea</code> using
237 * the specified peer interface.
238 * @param target the text area to be implemented.
239 * @return this toolkit's implementation of <code>TextArea</code>.
240 * @exception HeadlessException if GraphicsEnvironment.isHeadless()
241 * returns true
242 * @see java.awt.GraphicsEnvironment#isHeadless
243 * @see java.awt.TextArea
244 * @see java.awt.peer.TextAreaPeer
245 */
246 protected abstract TextAreaPeer createTextArea(TextArea target)
247 throws HeadlessException;
248
249 /**
250 * Creates this toolkit's implementation of <code>Choice</code> using
251 * the specified peer interface.
252 * @param target the choice to be implemented.
253 * @return this toolkit's implementation of <code>Choice</code>.
254 * @exception HeadlessException if GraphicsEnvironment.isHeadless()
255 * returns true
256 * @see java.awt.GraphicsEnvironment#isHeadless
257 * @see java.awt.Choice
258 * @see java.awt.peer.ChoicePeer
259 */
260 protected abstract ChoicePeer createChoice(Choice target)
261 throws HeadlessException;
262
263 /**
264 * Creates this toolkit's implementation of <code>Frame</code> using
265 * the specified peer interface.
266 * @param target the frame to be implemented.
267 * @return this toolkit's implementation of <code>Frame</code>.
268 * @exception HeadlessException if GraphicsEnvironment.isHeadless()
269 * returns true
270 * @see java.awt.GraphicsEnvironment#isHeadless
271 * @see java.awt.Frame
272 * @see java.awt.peer.FramePeer
273 */
274 protected abstract FramePeer createFrame(Frame target)
275 throws HeadlessException;
276
277 /**
278 * Creates this toolkit's implementation of <code>Canvas</code> using
279 * the specified peer interface.
280 * @param target the canvas to be implemented.
281 * @return this toolkit's implementation of <code>Canvas</code>.
282 * @see java.awt.Canvas
283 * @see java.awt.peer.CanvasPeer
284 */
285 protected abstract CanvasPeer createCanvas(Canvas target);
286
287 /**
288 * Creates this toolkit's implementation of <code>Panel</code> using
289 * the specified peer interface.
290 * @param target the panel to be implemented.
291 * @return this toolkit's implementation of <code>Panel</code>.
292 * @see java.awt.Panel
293 * @see java.awt.peer.PanelPeer
294 */
295 protected abstract PanelPeer createPanel(Panel target);
296
297 /**
298 * Creates this toolkit's implementation of <code>Window</code> using
299 * the specified peer interface.
300 * @param target the window to be implemented.
301 * @return this toolkit's implementation of <code>Window</code>.
302 * @exception HeadlessException if GraphicsEnvironment.isHeadless()
303 * returns true
304 * @see java.awt.GraphicsEnvironment#isHeadless
305 * @see java.awt.Window
306 * @see java.awt.peer.WindowPeer
307 */
308 protected abstract WindowPeer createWindow(Window target)
309 throws HeadlessException;
310
311 /**
312 * Creates this toolkit's implementation of <code>Dialog</code> using
313 * the specified peer interface.
314 * @param target the dialog to be implemented.
315 * @return this toolkit's implementation of <code>Dialog</code>.
316 * @exception HeadlessException if GraphicsEnvironment.isHeadless()
317 * returns true
318 * @see java.awt.GraphicsEnvironment#isHeadless
319 * @see java.awt.Dialog
320 * @see java.awt.peer.DialogPeer
321 */
322 protected abstract DialogPeer createDialog(Dialog target)
323 throws HeadlessException;
324
325 /**
326 * Creates this toolkit's implementation of <code>MenuBar</code> using
327 * the specified peer interface.
328 * @param target the menu bar to be implemented.
329 * @return this toolkit's implementation of <code>MenuBar</code>.
330 * @exception HeadlessException if GraphicsEnvironment.isHeadless()
331 * returns true
332 * @see java.awt.GraphicsEnvironment#isHeadless
333 * @see java.awt.MenuBar
334 * @see java.awt.peer.MenuBarPeer
335 */
336 protected abstract MenuBarPeer createMenuBar(MenuBar target)
337 throws HeadlessException;
338
339 /**
340 * Creates this toolkit's implementation of <code>Menu</code> using
341 * the specified peer interface.
342 * @param target the menu to be implemented.
343 * @return this toolkit's implementation of <code>Menu</code>.
344 * @exception HeadlessException if GraphicsEnvironment.isHeadless()
345 * returns true
346 * @see java.awt.GraphicsEnvironment#isHeadless
347 * @see java.awt.Menu
348 * @see java.awt.peer.MenuPeer
349 */
350 protected abstract MenuPeer createMenu(Menu target)
351 throws HeadlessException;
352
353 /**
354 * Creates this toolkit's implementation of <code>PopupMenu</code> using
355 * the specified peer interface.
356 * @param target the popup menu to be implemented.
357 * @return this toolkit's implementation of <code>PopupMenu</code>.
358 * @exception HeadlessException if GraphicsEnvironment.isHeadless()
359 * returns true
360 * @see java.awt.GraphicsEnvironment#isHeadless
361 * @see java.awt.PopupMenu
362 * @see java.awt.peer.PopupMenuPeer
363 * @since JDK1.1
364 */
365 protected abstract PopupMenuPeer createPopupMenu(PopupMenu target)
366 throws HeadlessException;
367
368 /**
369 * Creates this toolkit's implementation of <code>MenuItem</code> using
370 * the specified peer interface.
371 * @param target the menu item to be implemented.
372 * @return this toolkit's implementation of <code>MenuItem</code>.
373 * @exception HeadlessException if GraphicsEnvironment.isHeadless()
374 * returns true
375 * @see java.awt.GraphicsEnvironment#isHeadless
376 * @see java.awt.MenuItem
377 * @see java.awt.peer.MenuItemPeer
378 */
379 protected abstract MenuItemPeer createMenuItem(MenuItem target)
380 throws HeadlessException;
381
382 /**
383 * Creates this toolkit's implementation of <code>FileDialog</code> using
384 * the specified peer interface.
385 * @param target the file dialog to be implemented.
386 * @return this toolkit's implementation of <code>FileDialog</code>.
387 * @exception HeadlessException if GraphicsEnvironment.isHeadless()
388 * returns true
389 * @see java.awt.GraphicsEnvironment#isHeadless
390 * @see java.awt.FileDialog
391 * @see java.awt.peer.FileDialogPeer
392 */
393 protected abstract FileDialogPeer createFileDialog(FileDialog target)
394 throws HeadlessException;
395
396 /**
397 * Creates this toolkit's implementation of <code>DirectoryDialog</code> using
398 * the specified peer interface.
399 * @param target the directory dialog to be implemented.
400 * @return this toolkit's implementation of <code>DirectoryDialog</code>.
401 * @exception HeadlessException if GraphicsEnvironment.isHeadless()
402 * returns true
403 * @see java.awt.GraphicsEnvironment#isHeadless
404 * @see java.awt.DirectoryDialog
405 * @see java.awt.peer.DirectoryDialogPeer
406 */
407 protected abstract DirectoryDialogPeer createDirectoryDialog(DirectoryDialog target)
408 throws HeadlessException;
409
410 /**
411 * Creates this toolkit's implementation of <code>CheckboxMenuItem</code> using
412 * the specified peer interface.
413 * @param target the checkbox menu item to be implemented.
414 * @return this toolkit's implementation of <code>CheckboxMenuItem</code>.
415 * @exception HeadlessException if GraphicsEnvironment.isHeadless()
416 * returns true
417 * @see java.awt.GraphicsEnvironment#isHeadless
418 * @see java.awt.CheckboxMenuItem
419 * @see java.awt.peer.CheckboxMenuItemPeer
420 */
421 protected abstract CheckboxMenuItemPeer createCheckboxMenuItem(
422 CheckboxMenuItem target) throws HeadlessException;
423
424 /**
425 * Obtains this toolkit's implementation of helper class for
426 * <code>MouseInfo</code> operations.
427 * @return this toolkit's implementation of helper for <code>MouseInfo</code>
428 * @throws UnsupportedOperationException if this operation is not implemented
429 * @see java.awt.peer.MouseInfoPeer
430 * @see java.awt.MouseInfo
431 * @since 1.5
432 */
433 protected MouseInfoPeer getMouseInfoPeer() {
434 throw new UnsupportedOperationException("Not implemented");
435 }
436
437 private static LightweightPeer lightweightMarker;
438
439 /**
440 * Creates a peer for a component or container. This peer is windowless
441 * and allows the Component and Container classes to be extended directly
442 * to create windowless components that are defined entirely in java.
443 *
444 * @param target The Component to be created.
445 */
446 protected LightweightPeer createComponent(Component target) {
447 if (lightweightMarker == null) {
448 lightweightMarker = new NullComponentPeer();
449 }
450 return lightweightMarker;
451 }
452
453 /**
454 * Creates this toolkit's implementation of <code>Font</code> using
455 * the specified peer interface.
456 * @param name the font to be implemented
457 * @param style the style of the font, such as <code>PLAIN</code>,
458 * <code>BOLD</code>, <code>ITALIC</code>, or a combination
459 * @return this toolkit's implementation of <code>Font</code>
460 * @see java.awt.Font
461 * @see java.awt.peer.FontPeer
462 * @see java.awt.GraphicsEnvironment#getAllFonts
463 * @deprecated see java.awt.GraphicsEnvironment#getAllFonts
464 */
465 @Deprecated
466 protected abstract FontPeer getFontPeer(String name, int style);
467
468 // The following method is called by the private method
469 // <code>updateSystemColors</code> in <code>SystemColor</code>.
470
471 /**
472 * Fills in the integer array that is supplied as an argument
473 * with the current system color values.
474 *
475 * @param systemColors an integer array.
476 * @exception HeadlessException if GraphicsEnvironment.isHeadless()
477 * returns true
478 * @see java.awt.GraphicsEnvironment#isHeadless
479 * @since JDK1.1
480 */
481 protected void loadSystemColors(int[] systemColors)
482 throws HeadlessException {
483 }
484
485 /**
486 * Controls whether the layout of Containers is validated dynamically
487 * during resizing, or statically, after resizing is complete.
488 * Use {@code isDynamicLayoutActive()} to detect if this feature enabled
489 * in this program and is supported by this operating system
490 * and/or window manager.
491 * Note that this feature is supported not on all platforms, and
492 * conversely, that this feature cannot be turned off on some platforms.
493 * On these platforms where dynamic layout during resizing is not supported
494 * (or is always supported), setting this property has no effect.
495 * Note that this feature can be set or unset as a property of the
496 * operating system or window manager on some platforms. On such
497 * platforms, the dynamic resize property must be set at the operating
498 * system or window manager level before this method can take effect.
499 * This method does not change support or settings of the underlying
500 * operating system or
501 * window manager. The OS/WM support can be
502 * queried using getDesktopProperty("awt.dynamicLayoutSupported") method.
503 *
504 * @param dynamic If true, Containers should re-layout their
505 * components as the Container is being resized. If false,
506 * the layout will be validated after resizing is completed.
507 * @exception HeadlessException if GraphicsEnvironment.isHeadless()
508 * returns true
509 * @see #isDynamicLayoutSet()
510 * @see #isDynamicLayoutActive()
511 * @see #getDesktopProperty(String propertyName)
512 * @see java.awt.GraphicsEnvironment#isHeadless
513 * @since 1.4
514 */
515 public void setDynamicLayout(boolean dynamic)
516 throws HeadlessException {
517 }
518
519 /**
520 * Returns whether the layout of Containers is validated dynamically
521 * during resizing, or statically, after resizing is complete.
522 * Note: this method returns the value that was set programmatically;
523 * it does not reflect support at the level of the operating system
524 * or window manager for dynamic layout on resizing, or the current
525 * operating system or window manager settings. The OS/WM support can
526 * be queried using getDesktopProperty("awt.dynamicLayoutSupported").
527 *
528 * @return true if validation of Containers is done dynamically,
529 * false if validation is done after resizing is finished.
530 * @exception HeadlessException if GraphicsEnvironment.isHeadless()
531 * returns true
532 * @see #setDynamicLayout(boolean dynamic)
533 * @see #isDynamicLayoutActive()
534 * @see #getDesktopProperty(String propertyName)
535 * @see java.awt.GraphicsEnvironment#isHeadless
536 * @since 1.4
537 */
538 protected boolean isDynamicLayoutSet()
539 throws HeadlessException {
540 if (this != Toolkit.getDefaultToolkit()) {
541 return Toolkit.getDefaultToolkit().isDynamicLayoutSet();
542 } else {
543 return false;
544 }
545 }
546
547 /**
548 * Returns whether dynamic layout of Containers on resize is
549 * currently active (both set in program
550 *( {@code isDynamicLayoutSet()} )
551 *, and supported
552 * by the underlying operating system and/or window manager).
553 * If dynamic layout is currently inactive then Containers
554 * re-layout their components when resizing is completed. As a result
555 * the {@code Component.validate()} method will be invoked only
556 * once per resize.
557 * If dynamic layout is currently active then Containers
558 * re-layout their components on every native resize event and
559 * the {@code validate()} method will be invoked each time.
560 * The OS/WM support can be queried using
561 * the getDesktopProperty("awt.dynamicLayoutSupported") method.
562 *
563 * @return true if dynamic layout of Containers on resize is
564 * currently active, false otherwise.
565 * @exception HeadlessException if the GraphicsEnvironment.isHeadless()
566 * method returns true
567 * @see #setDynamicLayout(boolean dynamic)
568 * @see #isDynamicLayoutSet()
569 * @see #getDesktopProperty(String propertyName)
570 * @see java.awt.GraphicsEnvironment#isHeadless
571 * @since 1.4
572 */
573 public boolean isDynamicLayoutActive()
574 throws HeadlessException {
575 if (this != Toolkit.getDefaultToolkit()) {
576 return Toolkit.getDefaultToolkit().isDynamicLayoutActive();
577 } else {
578 return false;
579 }
580 }
581
582 /**
583 * Gets the size of the screen. On systems with multiple displays, the
584 * primary display is used. Multi-screen aware display dimensions are
585 * available from <code>GraphicsConfiguration</code> and
586 * <code>GraphicsDevice</code>.
587 * @return the size of this toolkit's screen, in pixels.
588 * @exception HeadlessException if GraphicsEnvironment.isHeadless()
589 * returns true
590 * @see java.awt.GraphicsConfiguration#getBounds
591 * @see java.awt.GraphicsDevice#getDisplayMode
592 * @see java.awt.GraphicsEnvironment#isHeadless
593 */
594 public abstract Dimension getScreenSize()
595 throws HeadlessException;
596
597 /**
598 * Returns the screen resolution in dots-per-inch.
599 * @return this toolkit's screen resolution, in dots-per-inch.
600 * @exception HeadlessException if GraphicsEnvironment.isHeadless()
601 * returns true
602 * @see java.awt.GraphicsEnvironment#isHeadless
603 */
604 public abstract int getScreenResolution()
605 throws HeadlessException;
606
607 /**
608 * Gets the insets of the screen.
609 * @param gc a <code>GraphicsConfiguration</code>
610 * @return the insets of this toolkit's screen, in pixels.
611 * @exception HeadlessException if GraphicsEnvironment.isHeadless()
612 * returns true
613 * @see java.awt.GraphicsEnvironment#isHeadless
614 * @since 1.4
615 */
616 public Insets getScreenInsets(GraphicsConfiguration gc)
617 throws HeadlessException {
618 if (this != Toolkit.getDefaultToolkit()) {
619 return Toolkit.getDefaultToolkit().getScreenInsets(gc);
620 } else {
621 return new Insets(0, 0, 0, 0);
622 }
623 }
624
625 /**
626 * Determines the color model of this toolkit's screen.
627 * <p>
628 * <code>ColorModel</code> is an abstract class that
629 * encapsulates the ability to translate between the
630 * pixel values of an image and its red, green, blue,
631 * and alpha components.
632 * <p>
633 * This toolkit method is called by the
634 * <code>getColorModel</code> method
635 * of the <code>Component</code> class.
636 * @return the color model of this toolkit's screen.
637 * @exception HeadlessException if GraphicsEnvironment.isHeadless()
638 * returns true
639 * @see java.awt.GraphicsEnvironment#isHeadless
640 * @see java.awt.image.ColorModel
641 * @see java.awt.Component#getColorModel
642 */
643 public abstract ColorModel getColorModel()
644 throws HeadlessException;
645
646 /**
647 * Returns the names of the available fonts in this toolkit.<p>
648 * For 1.1, the following font names are deprecated (the replacement
649 * name follows):
650 * <ul>
651 * <li>TimesRoman (use Serif)
652 * <li>Helvetica (use SansSerif)
653 * <li>Courier (use Monospaced)
654 * </ul><p>
655 * The ZapfDingbats fontname is also deprecated in 1.1 but the characters
656 * are defined in Unicode starting at 0x2700, and as of 1.1 Java supports
657 * those characters.
658 * @return the names of the available fonts in this toolkit.
659 * @deprecated see {@link java.awt.GraphicsEnvironment#getAvailableFontFamilyNames()}
660 * @see java.awt.GraphicsEnvironment#getAvailableFontFamilyNames()
661 */
662 @Deprecated
663 public abstract String[] getFontList();
664
665 /**
666 * Gets the screen device metrics for rendering of the font.
667 * @param font a font
668 * @return the screen metrics of the specified font in this toolkit
669 * @deprecated As of JDK version 1.2, replaced by the <code>Font</code>
670 * method <code>getLineMetrics</code>.
671 * @see java.awt.font.LineMetrics
672 * @see java.awt.Font#getLineMetrics
673 * @see java.awt.GraphicsEnvironment#getScreenDevices
674 */
675 @Deprecated
676 public abstract FontMetrics getFontMetrics(Font font);
677
678 /**
679 * Synchronizes this toolkit's graphics state. Some window systems
680 * may do buffering of graphics events.
681 * <p>
682 * This method ensures that the display is up-to-date. It is useful
683 * for animation.
684 */
685 public abstract void sync();
686
687 /**
688 * The default toolkit.
689 */
690 private static Toolkit toolkit;
691
692 /**
693 * Used internally by the assistive technologies functions; set at
694 * init time and used at load time
695 */
696 private static String atNames;
697
698 /**
699 * Initializes properties related to assistive technologies.
700 * These properties are used both in the loadAssistiveProperties()
701 * function below, as well as other classes in the jdk that depend
702 * on the properties (such as the use of the screen_magnifier_present
703 * property in Java2D hardware acceleration initialization). The
704 * initialization of the properties must be done before the platform-
705 * specific Toolkit class is instantiated so that all necessary
706 * properties are set up properly before any classes dependent upon them
707 * are initialized.
708 */
709 private static void initAssistiveTechnologies() {
710
711 // Get accessibility properties
712 final String sep = File.separator;
713 final Properties properties = new Properties();
714
715
716 atNames = (String)java.security.AccessController.doPrivileged(
717 new java.security.PrivilegedAction() {
718 public Object run() {
719
720 // Try loading the per-user accessibility properties file.
721 try {
722 File propsFile = new File(
723 System.getProperty("user.home") +
724 sep + ".accessibility.properties");
725 FileInputStream in =
726 new FileInputStream(propsFile);
727
728 // Inputstream has been buffered in Properties class
729 properties.load(in);
730 in.close();
731 } catch (Exception e) {
732 // Per-user accessibility properties file does not exist
733 }
734
735 // Try loading the system-wide accessibility properties
736 // file only if a per-user accessibility properties
737 // file does not exist or is empty.
738 if (properties.size() == 0) {
739 try {
740 File propsFile = new File(
741 System.getProperty("java.home") + sep + "lib" +
742 sep + "accessibility.properties");
743 FileInputStream in =
744 new FileInputStream(propsFile);
745
746 // Inputstream has been buffered in Properties class
747 properties.load(in);
748 in.close();
749 } catch (Exception e) {
750 // System-wide accessibility properties file does
751 // not exist;
752 }
753 }
754
755 // Get whether a screen magnifier is present. First check
756 // the system property and then check the properties file.
757 String magPresent = System.getProperty("javax.accessibility.screen_magnifier_present");
758 if (magPresent == null) {
759 magPresent = properties.getProperty("screen_magnifier_present", null);
760 if (magPresent != null) {
761 System.setProperty("javax.accessibility.screen_magnifier_present", magPresent);
762 }
763 }
764
765 // Get the names of any assistive technolgies to load. First
766 // check the system property and then check the properties
767 // file.
768 String classNames = System.getProperty("javax.accessibility.assistive_technologies");
769 if (classNames == null) {
770 classNames = properties.getProperty("assistive_technologies", null);
771 if (classNames != null) {
772 System.setProperty("javax.accessibility.assistive_technologies", classNames);
773 }
774 }
775 return classNames;
776 }
777 });
778 }
779
780 /**
781 * Loads additional classes into the VM, using the property
782 * 'assistive_technologies' specified in the Sun reference
783 * implementation by a line in the 'accessibility.properties'
784 * file. The form is "assistive_technologies=..." where
785 * the "..." is a comma-separated list of assistive technology
786 * classes to load. Each class is loaded in the order given
787 * and a single instance of each is created using
788 * Class.forName(class).newInstance(). All errors are handled
789 * via an AWTError exception.
790 *
791 * <p>The assumption is made that assistive technology classes are supplied
792 * as part of INSTALLED (as opposed to: BUNDLED) extensions or specified
793 * on the class path
794 * (and therefore can be loaded using the class loader returned by
795 * a call to <code>ClassLoader.getSystemClassLoader</code>, whose
796 * delegation parent is the extension class loader for installed
797 * extensions).
798 */
799 private static void loadAssistiveTechnologies() {
800 // Load any assistive technologies
801 if (atNames != null) {
802 ClassLoader cl = ClassLoader.getSystemClassLoader();
803 StringTokenizer parser = new StringTokenizer(atNames," ,");
804 String atName;
805 while (parser.hasMoreTokens()) {
806 atName = parser.nextToken();
807 try {
808 Class clazz;
809 if (cl != null) {
810 clazz = cl.loadClass(atName);
811 } else {
812 clazz = Class.forName(atName);
813 }
814 clazz.newInstance();
815 } catch (ClassNotFoundException e) {
816 throw new AWTError("Assistive Technology not found: "
817 + atName);
818 } catch (InstantiationException e) {
819 throw new AWTError("Could not instantiate Assistive"
820 + " Technology: " + atName);
821 } catch (IllegalAccessException e) {
822 throw new AWTError("Could not access Assistive"
823 + " Technology: " + atName);
824 } catch (Exception e) {
825 throw new AWTError("Error trying to install Assistive"
826 + " Technology: " + atName + " " + e);
827 }
828 }
829 }
830 }
831
832 /**
833 * Gets the default toolkit.
834 * <p>
835 * If a system property named <code>"java.awt.headless"</code> is set
836 * to <code>true</code> then the headless implementation
837 * of <code>Toolkit</code> is used.
838 * <p>
839 * If there is no <code>"java.awt.headless"</code> or it is set to
840 * <code>false</code> and there is a system property named
841 * <code>"awt.toolkit"</code>,
842 * that property is treated as the name of a class that is a subclass
843 * of <code>Toolkit</code>;
844 * otherwise the default platform-specific implementation of
845 * <code>Toolkit</code> is used.
846 * <p>
847 * Also loads additional classes into the VM, using the property
848 * 'assistive_technologies' specified in the Sun reference
849 * implementation by a line in the 'accessibility.properties'
850 * file. The form is "assistive_technologies=..." where
851 * the "..." is a comma-separated list of assistive technology
852 * classes to load. Each class is loaded in the order given
853 * and a single instance of each is created using
854 * Class.forName(class).newInstance(). This is done just after
855 * the AWT toolkit is created. All errors are handled via an
856 * AWTError exception.
857 * @return the default toolkit.
858 * @exception AWTError if a toolkit could not be found, or
859 * if one could not be accessed or instantiated.
860 */
861 public static synchronized Toolkit getDefaultToolkit() {
862 if (toolkit == null) {
863 try {
864 // We disable the JIT during toolkit initialization. This
865 // tends to touch lots of classes that aren't needed again
866 // later and therefore JITing is counter-productiive.
867 java.lang.Compiler.disable();
868
869 java.security.AccessController.doPrivileged(
870 new java.security.PrivilegedAction() {
871 public Object run() {
872 String nm = null;
873 Class cls = null;
874 try {
875 nm = System.getProperty("awt.toolkit", "sun.awt.X11.XToolkit");
876 try {
877 cls = Class.forName(nm);
878 } catch (ClassNotFoundException e) {
879 ClassLoader cl = ClassLoader.getSystemClassLoader();
880 if (cl != null) {
881 try {
882 cls = cl.loadClass(nm);
883 } catch (ClassNotFoundException ee) {
884 throw new AWTError("Toolkit not found: " + nm);
885 }
886 }
887 }
888 if (cls != null) {
889 toolkit = (Toolkit)cls.newInstance();
890 if (GraphicsEnvironment.isHeadless()) {
891 toolkit = new HeadlessToolkit(toolkit);
892 }
893 }
894 } catch (InstantiationException e) {
895 throw new AWTError("Could not instantiate Toolkit: " + nm);
896 } catch (IllegalAccessException e) {
897 throw new AWTError("Could not access Toolkit: " + nm);
898 }
899 return null;
900 }
901 });
902 loadAssistiveTechnologies();
903 } finally {
904 // Make sure to always re-enable the JIT.
905 java.lang.Compiler.enable();
906 }
907 }
908 return toolkit;
909 }
910
911 /**
912 * Returns an image which gets pixel data from the specified file,
913 * whose format can be either GIF, JPEG or PNG.
914 * The underlying toolkit attempts to resolve multiple requests
915 * with the same filename to the same returned Image.
916 * <p>
917 * Since the mechanism required to facilitate this sharing of
918 * <code>Image</code> objects may continue to hold onto images
919 * that are no longer in use for an indefinite period of time,
920 * developers are encouraged to implement their own caching of
921 * images by using the {@link #createImage(java.lang.String) createImage}
922 * variant wherever available.
923 * If the image data contained in the specified file changes,
924 * the <code>Image</code> object returned from this method may
925 * still contain stale information which was loaded from the
926 * file after a prior call.
927 * Previously loaded image data can be manually discarded by
928 * calling the {@link Image#flush flush} method on the
929 * returned <code>Image</code>.
930 * <p>
931 * This method first checks if there is a security manager installed.
932 * If so, the method calls the security manager's
933 * <code>checkRead</code> method with the file specified to ensure
934 * that the access to the image is allowed.
935 * @param filename the name of a file containing pixel data
936 * in a recognized file format.
937 * @return an image which gets its pixel data from
938 * the specified file.
939 * @throws SecurityException if a security manager exists and its
940 * checkRead method doesn't allow the operation.
941 * @see #createImage(java.lang.String)
942 */
943 public abstract Image getImage(String filename);
944
945 /**
946 * Returns an image which gets pixel data from the specified URL.
947 * The pixel data referenced by the specified URL must be in one
948 * of the following formats: GIF, JPEG or PNG.
949 * The underlying toolkit attempts to resolve multiple requests
950 * with the same URL to the same returned Image.
951 * <p>
952 * Since the mechanism required to facilitate this sharing of
953 * <code>Image</code> objects may continue to hold onto images
954 * that are no longer in use for an indefinite period of time,
955 * developers are encouraged to implement their own caching of
956 * images by using the {@link #createImage(java.net.URL) createImage}
957 * variant wherever available.
958 * If the image data stored at the specified URL changes,
959 * the <code>Image</code> object returned from this method may
960 * still contain stale information which was fetched from the
961 * URL after a prior call.
962 * Previously loaded image data can be manually discarded by
963 * calling the {@link Image#flush flush} method on the
964 * returned <code>Image</code>.
965 * <p>
966 * This method first checks if there is a security manager installed.
967 * If so, the method calls the security manager's
968 * <code>checkPermission</code> method with the
969 * url.openConnection().getPermission() permission to ensure
970 * that the access to the image is allowed. For compatibility
971 * with pre-1.2 security managers, if the access is denied with
972 * <code>FilePermission</code> or <code>SocketPermission</code>,
973 * the method throws the <code>SecurityException</code>
974 * if the corresponding 1.1-style SecurityManager.checkXXX method
975 * also denies permission.
976 * @param url the URL to use in fetching the pixel data.
977 * @return an image which gets its pixel data from
978 * the specified URL.
979 * @throws SecurityException if a security manager exists and its
980 * checkPermission method doesn't allow
981 * the operation.
982 * @see #createImage(java.net.URL)
983 */
984 public abstract Image getImage(URL url);
985
986 /**
987 * Returns an image which gets pixel data from the specified file.
988 * The returned Image is a new object which will not be shared
989 * with any other caller of this method or its getImage variant.
990 * <p>
991 * This method first checks if there is a security manager installed.
992 * If so, the method calls the security manager's
993 * <code>checkRead</code> method with the specified file to ensure
994 * that the image creation is allowed.
995 * @param filename the name of a file containing pixel data
996 * in a recognized file format.
997 * @return an image which gets its pixel data from
998 * the specified file.
999 * @throws SecurityException if a security manager exists and its
1000 * checkRead method doesn't allow the operation.
1001 * @see #getImage(java.lang.String)
1002 */
1003 public abstract Image createImage(String filename);
1004
1005 /**
1006 * Returns an image which gets pixel data from the specified URL.
1007 * The returned Image is a new object which will not be shared
1008 * with any other caller of this method or its getImage variant.
1009 * <p>
1010 * This method first checks if there is a security manager installed.
1011 * If so, the method calls the security manager's
1012 * <code>checkPermission</code> method with the
1013 * url.openConnection().getPermission() permission to ensure
1014 * that the image creation is allowed. For compatibility
1015 * with pre-1.2 security managers, if the access is denied with
1016 * <code>FilePermission</code> or <code>SocketPermission</code>,
1017 * the method throws <code>SecurityException</code>
1018 * if the corresponding 1.1-style SecurityManager.checkXXX method
1019 * also denies permission.
1020 * @param url the URL to use in fetching the pixel data.
1021 * @return an image which gets its pixel data from
1022 * the specified URL.
1023 * @throws SecurityException if a security manager exists and its
1024 * checkPermission method doesn't allow
1025 * the operation.
1026 * @see #getImage(java.net.URL)
1027 */
1028 public abstract Image createImage(URL url);
1029
1030 /**
1031 * Prepares an image for rendering.
1032 * <p>
1033 * If the values of the width and height arguments are both
1034 * <code>-1</code>, this method prepares the image for rendering
1035 * on the default screen; otherwise, this method prepares an image
1036 * for rendering on the default screen at the specified width and height.
1037 * <p>
1038 * The image data is downloaded asynchronously in another thread,
1039 * and an appropriately scaled screen representation of the image is
1040 * generated.
1041 * <p>
1042 * This method is called by components <code>prepareImage</code>
1043 * methods.
1044 * <p>
1045 * Information on the flags returned by this method can be found
1046 * with the definition of the <code>ImageObserver</code> interface.
1047
1048 * @param image the image for which to prepare a
1049 * screen representation.
1050 * @param width the width of the desired screen
1051 * representation, or <code>-1</code>.
1052 * @param height the height of the desired screen
1053 * representation, or <code>-1</code>.
1054 * @param observer the <code>ImageObserver</code>
1055 * object to be notified as the
1056 * image is being prepared.
1057 * @return <code>true</code> if the image has already been
1058 * fully prepared; <code>false</code> otherwise.
1059 * @see java.awt.Component#prepareImage(java.awt.Image,
1060 * java.awt.image.ImageObserver)
1061 * @see java.awt.Component#prepareImage(java.awt.Image,
1062 * int, int, java.awt.image.ImageObserver)
1063 * @see java.awt.image.ImageObserver
1064 */
1065 public abstract boolean prepareImage(Image image, int width, int height,
1066 ImageObserver observer);
1067
1068 /**
1069 * Indicates the construction status of a specified image that is
1070 * being prepared for display.
1071 * <p>
1072 * If the values of the width and height arguments are both
1073 * <code>-1</code>, this method returns the construction status of
1074 * a screen representation of the specified image in this toolkit.
1075 * Otherwise, this method returns the construction status of a
1076 * scaled representation of the image at the specified width
1077 * and height.
1078 * <p>
1079 * This method does not cause the image to begin loading.
1080 * An application must call <code>prepareImage</code> to force
1081 * the loading of an image.
1082 * <p>
1083 * This method is called by the component's <code>checkImage</code>
1084 * methods.
1085 * <p>
1086 * Information on the flags returned by this method can be found
1087 * with the definition of the <code>ImageObserver</code> interface.
1088 * @param image the image whose status is being checked.
1089 * @param width the width of the scaled version whose status is
1090 * being checked, or <code>-1</code>.
1091 * @param height the height of the scaled version whose status
1092 * is being checked, or <code>-1</code>.
1093 * @param observer the <code>ImageObserver</code> object to be
1094 * notified as the image is being prepared.
1095 * @return the bitwise inclusive <strong>OR</strong> of the
1096 * <code>ImageObserver</code> flags for the
1097 * image data that is currently available.
1098 * @see java.awt.Toolkit#prepareImage(java.awt.Image,
1099 * int, int, java.awt.image.ImageObserver)
1100 * @see java.awt.Component#checkImage(java.awt.Image,
1101 * java.awt.image.ImageObserver)
1102 * @see java.awt.Component#checkImage(java.awt.Image,
1103 * int, int, java.awt.image.ImageObserver)
1104 * @see java.awt.image.ImageObserver
1105 */
1106 public abstract int checkImage(Image image, int width, int height,
1107 ImageObserver observer);
1108
1109 /**
1110 * Creates an image with the specified image producer.
1111 * @param producer the image producer to be used.
1112 * @return an image with the specified image producer.
1113 * @see java.awt.Image
1114 * @see java.awt.image.ImageProducer
1115 * @see java.awt.Component#createImage(java.awt.image.ImageProducer)
1116 */
1117 public abstract Image createImage(ImageProducer producer);
1118
1119 /**
1120 * Creates an image which decodes the image stored in the specified
1121 * byte array.
1122 * <p>
1123 * The data must be in some image format, such as GIF or JPEG,
1124 * that is supported by this toolkit.
1125 * @param imagedata an array of bytes, representing
1126 * image data in a supported image format.
1127 * @return an image.
1128 * @since JDK1.1
1129 */
1130 public Image createImage(byte[] imagedata) {
1131 return createImage(imagedata, 0, imagedata.length);
1132 }
1133
1134 /**
1135 * Creates an image which decodes the image stored in the specified
1136 * byte array, and at the specified offset and length.
1137 * The data must be in some image format, such as GIF or JPEG,
1138 * that is supported by this toolkit.
1139 * @param imagedata an array of bytes, representing
1140 * image data in a supported image format.
1141 * @param imageoffset the offset of the beginning
1142 * of the data in the array.
1143 * @param imagelength the length of the data in the array.
1144 * @return an image.
1145 * @since JDK1.1
1146 */
1147 public abstract Image createImage(byte[] imagedata,
1148 int imageoffset,
1149 int imagelength);
1150
1151 /**
1152 * Gets a <code>PrintJob</code> object which is the result of initiating
1153 * a print operation on the toolkit's platform.
1154 * <p>
1155 * Each actual implementation of this method should first check if there
1156 * is a security manager installed. If there is, the method should call
1157 * the security manager's <code>checkPrintJobAccess</code> method to
1158 * ensure initiation of a print operation is allowed. If the default
1159 * implementation of <code>checkPrintJobAccess</code> is used (that is,
1160 * that method is not overriden), then this results in a call to the
1161 * security manager's <code>checkPermission</code> method with a <code>
1162 * RuntimePermission("queuePrintJob")</code> permission.
1163 *
1164 * @param frame the parent of the print dialog. May not be null.
1165 * @param jobtitle the title of the PrintJob. A null title is equivalent
1166 * to "".
1167 * @param props a Properties object containing zero or more properties.
1168 * Properties are not standardized and are not consistent across
1169 * implementations. Because of this, PrintJobs which require job
1170 * and page control should use the version of this function which
1171 * takes JobAttributes and PageAttributes objects. This object
1172 * may be updated to reflect the user's job choices on exit. May
1173 * be null.
1174 *
1175 * @return a <code>PrintJob</code> object, or <code>null</code> if the
1176 * user cancelled the print job.
1177 * @throws NullPointerException if frame is null. This exception is
1178 * always thrown when GraphicsEnvironment.isHeadless() returns
1179 * true.
1180 * @throws SecurityException if this thread is not allowed to initiate a
1181 * print job request
1182 * @see java.awt.GraphicsEnvironment#isHeadless
1183 * @see java.awt.PrintJob
1184 * @see java.lang.RuntimePermission
1185 * @since JDK1.1
1186 */
1187 public abstract PrintJob getPrintJob(Frame frame, String jobtitle,
1188 Properties props);
1189
1190 /**
1191 * Gets a <code>PrintJob</code> object which is the result of initiating
1192 * a print operation on the toolkit's platform.
1193 * <p>
1194 * Each actual implementation of this method should first check if there
1195 * is a security manager installed. If there is, the method should call
1196 * the security manager's <code>checkPrintJobAccess</code> method to
1197 * ensure initiation of a print operation is allowed. If the default
1198 * implementation of <code>checkPrintJobAccess</code> is used (that is,
1199 * that method is not overriden), then this results in a call to the
1200 * security manager's <code>checkPermission</code> method with a <code>
1201 * RuntimePermission("queuePrintJob")</code> permission.
1202 *
1203 * @param frame the parent of the print dialog. May be null if and only
1204 * if jobAttributes is not null and jobAttributes.getDialog()
1205 * returns JobAttributes.DialogType.NONE or
1206 * JobAttributes.DialogType.COMMON.
1207 * @param jobtitle the title of the PrintJob. A null title is equivalent
1208 * to "".
1209 * @param jobAttributes a set of job attributes which will control the
1210 * PrintJob. The attributes will be updated to reflect the user's
1211 * choices as outlined in the JobAttributes documentation. May be
1212 * null.
1213 * @param pageAttributes a set of page attributes which will control the
1214 * PrintJob. The attributes will be applied to every page in the
1215 * job. The attributes will be updated to reflect the user's
1216 * choices as outlined in the PageAttributes documentation. May be
1217 * null.
1218 *
1219 * @return a <code>PrintJob</code> object, or <code>null</code> if the
1220 * user cancelled the print job.
1221 * @throws NullPointerException if frame is null and either jobAttributes
1222 * is null or jobAttributes.getDialog() returns
1223 * JobAttributes.DialogType.NATIVE.
1224 * @throws IllegalArgumentException if pageAttributes specifies differing
1225 * cross feed and feed resolutions. Also if this thread has
1226 * access to the file system and jobAttributes specifies
1227 * print to file, and the specified destination file exists but
1228 * is a directory rather than a regular file, does not exist but
1229 * cannot be created, or cannot be opened for any other reason.
1230 * However in the case of print to file, if a dialog is also
1231 * requested to be displayed then the user will be given an
1232 * opportunity to select a file and proceed with printing.
1233 * The dialog will ensure that the selected output file
1234 * is valid before returning from this method.
1235 * <p>
1236 * This exception is always thrown when GraphicsEnvironment.isHeadless()
1237 * returns true.
1238 * @throws SecurityException if this thread is not allowed to initiate a
1239 * print job request, or if jobAttributes specifies print to file,
1240 * and this thread is not allowed to access the file system
1241 * @see java.awt.PrintJob
1242 * @see java.awt.GraphicsEnvironment#isHeadless
1243 * @see java.lang.RuntimePermission
1244 * @see java.awt.JobAttributes
1245 * @see java.awt.PageAttributes
1246 * @since 1.3
1247 */
1248 public PrintJob getPrintJob(Frame frame, String jobtitle,
1249 JobAttributes jobAttributes,
1250 PageAttributes pageAttributes) {
1251 // Override to add printing support with new job/page control classes
1252
1253 if (GraphicsEnvironment.isHeadless()) {
1254 throw new IllegalArgumentException();
1255 }
1256
1257 if (this != Toolkit.getDefaultToolkit()) {
1258 return Toolkit.getDefaultToolkit().getPrintJob(frame, jobtitle,
1259 jobAttributes,
1260 pageAttributes);
1261 } else {
1262 return getPrintJob(frame, jobtitle, null);
1263 }
1264 }
1265
1266 /**
1267 * Emits an audio beep.
1268 * @since JDK1.1
1269 */
1270 public abstract void beep();
1271
1272 /**
1273 * Gets the singleton instance of the system Clipboard which interfaces
1274 * with clipboard facilities provided by the native platform. This
1275 * clipboard enables data transfer between Java programs and native
1276 * applications which use native clipboard facilities.
1277 * <p>
1278 * In addition to any and all formats specified in the flavormap.properties
1279 * file, or other file specified by the <code>AWT.DnD.flavorMapFileURL
1280 * </code> Toolkit property, text returned by the system Clipboard's <code>
1281 * getTransferData()</code> method is available in the following flavors:
1282 * <ul>
1283 * <li>DataFlavor.stringFlavor</li>
1284 * <li>DataFlavor.plainTextFlavor (<b>deprecated</b>)</li>
1285 * </ul>
1286 * As with <code>java.awt.datatransfer.StringSelection</code>, if the
1287 * requested flavor is <code>DataFlavor.plainTextFlavor</code>, or an
1288 * equivalent flavor, a Reader is returned. <b>Note:</b> The behavior of
1289 * the system Clipboard's <code>getTransferData()</code> method for <code>
1290 * DataFlavor.plainTextFlavor</code>, and equivalent DataFlavors, is
1291 * inconsistent with the definition of <code>DataFlavor.plainTextFlavor
1292 * </code>. Because of this, support for <code>
1293 * DataFlavor.plainTextFlavor</code>, and equivalent flavors, is
1294 * <b>deprecated</b>.
1295 * <p>
1296 * Each actual implementation of this method should first check if there
1297 * is a security manager installed. If there is, the method should call
1298 * the security manager's <code>checkSystemClipboardAccess</code> method
1299 * to ensure it's ok to to access the system clipboard. If the default
1300 * implementation of <code>checkSystemClipboardAccess</code> is used (that
1301 * is, that method is not overriden), then this results in a call to the
1302 * security manager's <code>checkPermission</code> method with an <code>
1303 * AWTPermission("accessClipboard")</code> permission.
1304 *
1305 * @return the system Clipboard
1306 * @exception HeadlessException if GraphicsEnvironment.isHeadless()
1307 * returns true
1308 * @see java.awt.GraphicsEnvironment#isHeadless
1309 * @see java.awt.datatransfer.Clipboard
1310 * @see java.awt.datatransfer.StringSelection
1311 * @see java.awt.datatransfer.DataFlavor#stringFlavor
1312 * @see java.awt.datatransfer.DataFlavor#plainTextFlavor
1313 * @see java.io.Reader
1314 * @see java.awt.AWTPermission
1315 * @since JDK1.1
1316 */
1317 public abstract Clipboard getSystemClipboard()
1318 throws HeadlessException;
1319
1320 /**
1321 * Gets the singleton instance of the system selection as a
1322 * <code>Clipboard</code> object. This allows an application to read and
1323 * modify the current, system-wide selection.
1324 * <p>
1325 * An application is responsible for updating the system selection whenever
1326 * the user selects text, using either the mouse or the keyboard.
1327 * Typically, this is implemented by installing a
1328 * <code>FocusListener</code> on all <code>Component</code>s which support
1329 * text selection, and, between <code>FOCUS_GAINED</code> and
1330 * <code>FOCUS_LOST</code> events delivered to that <code>Component</code>,
1331 * updating the system selection <code>Clipboard</code> when the selection
1332 * changes inside the <code>Component</code>. Properly updating the system
1333 * selection ensures that a Java application will interact correctly with
1334 * native applications and other Java applications running simultaneously
1335 * on the system. Note that <code>java.awt.TextComponent</code> and
1336 * <code>javax.swing.text.JTextComponent</code> already adhere to this
1337 * policy. When using these classes, and their subclasses, developers need
1338 * not write any additional code.
1339 * <p>
1340 * Some platforms do not support a system selection <code>Clipboard</code>.
1341 * On those platforms, this method will return <code>null</code>. In such a
1342 * case, an application is absolved from its responsibility to update the
1343 * system selection <code>Clipboard</code> as described above.
1344 * <p>
1345 * Each actual implementation of this method should first check if there
1346 * is a <code>SecurityManager</code> installed. If there is, the method
1347 * should call the <code>SecurityManager</code>'s
1348 * <code>checkSystemClipboardAccess</code> method to ensure that client
1349 * code has access the system selection. If the default implementation of
1350 * <code>checkSystemClipboardAccess</code> is used (that is, if the method
1351 * is not overridden), then this results in a call to the
1352 * <code>SecurityManager</code>'s <code>checkPermission</code> method with
1353 * an <code>AWTPermission("accessClipboard")</code> permission.
1354 *
1355 * @return the system selection as a <code>Clipboard</code>, or
1356 * <code>null</code> if the native platform does not support a
1357 * system selection <code>Clipboard</code>
1358 * @exception HeadlessException if GraphicsEnvironment.isHeadless()
1359 * returns true
1360 *
1361 * @see java.awt.datatransfer.Clipboard
1362 * @see java.awt.event.FocusListener
1363 * @see java.awt.event.FocusEvent#FOCUS_GAINED
1364 * @see java.awt.event.FocusEvent#FOCUS_LOST
1365 * @see TextComponent
1366 * @see javax.swing.text.JTextComponent
1367 * @see AWTPermission
1368 * @see GraphicsEnvironment#isHeadless
1369 * @since 1.4
1370 */
1371 public Clipboard getSystemSelection() throws HeadlessException {
1372 if (this != Toolkit.getDefaultToolkit()) {
1373 return Toolkit.getDefaultToolkit().getSystemSelection();
1374 } else {
1375 GraphicsEnvironment.checkHeadless();
1376 return null;
1377 }
1378 }
1379
1380 /**
1381 * Determines which modifier key is the appropriate accelerator
1382 * key for menu shortcuts.
1383 * <p>
1384 * Menu shortcuts, which are embodied in the
1385 * <code>MenuShortcut</code> class, are handled by the
1386 * <code>MenuBar</code> class.
1387 * <p>
1388 * By default, this method returns <code>Event.CTRL_MASK</code>.
1389 * Toolkit implementations should override this method if the
1390 * <b>Control</b> key isn't the correct key for accelerators.
1391 * @return the modifier mask on the <code>Event</code> class
1392 * that is used for menu shortcuts on this toolkit.
1393 * @exception HeadlessException if GraphicsEnvironment.isHeadless()
1394 * returns true
1395 * @see java.awt.GraphicsEnvironment#isHeadless
1396 * @see java.awt.MenuBar
1397 * @see java.awt.MenuShortcut
1398 * @since JDK1.1
1399 */
1400 public int getMenuShortcutKeyMask() throws HeadlessException {
1401 return Event.CTRL_MASK;
1402 }
1403
1404 /**
1405 * Returns whether the given locking key on the keyboard is currently in
1406 * its "on" state.
1407 * Valid key codes are
1408 * {@link java.awt.event.KeyEvent#VK_CAPS_LOCK VK_CAPS_LOCK},
1409 * {@link java.awt.event.KeyEvent#VK_NUM_LOCK VK_NUM_LOCK},
1410 * {@link java.awt.event.KeyEvent#VK_SCROLL_LOCK VK_SCROLL_LOCK}, and
1411 * {@link java.awt.event.KeyEvent#VK_KANA_LOCK VK_KANA_LOCK}.
1412 *
1413 * @exception java.lang.IllegalArgumentException if <code>keyCode</code>
1414 * is not one of the valid key codes
1415 * @exception java.lang.UnsupportedOperationException if the host system doesn't
1416 * allow getting the state of this key programmatically, or if the keyboard
1417 * doesn't have this key
1418 * @exception HeadlessException if GraphicsEnvironment.isHeadless()
1419 * returns true
1420 * @see java.awt.GraphicsEnvironment#isHeadless
1421 * @since 1.3
1422 */
1423 public boolean getLockingKeyState(int keyCode)
1424 throws UnsupportedOperationException {
1425 if (! (keyCode == KeyEvent.VK_CAPS_LOCK || keyCode == KeyEvent.VK_NUM_LOCK ||
1426 keyCode == KeyEvent.VK_SCROLL_LOCK || keyCode == KeyEvent.VK_KANA_LOCK)) {
1427 throw new IllegalArgumentException("invalid key for Toolkit.getLockingKeyState");
1428 }
1429 throw new UnsupportedOperationException("Toolkit.getLockingKeyState");
1430 }
1431
1432 /**
1433 * Sets the state of the given locking key on the keyboard.
1434 * Valid key codes are
1435 * {@link java.awt.event.KeyEvent#VK_CAPS_LOCK VK_CAPS_LOCK},
1436 * {@link java.awt.event.KeyEvent#VK_NUM_LOCK VK_NUM_LOCK},
1437 * {@link java.awt.event.KeyEvent#VK_SCROLL_LOCK VK_SCROLL_LOCK}, and
1438 * {@link java.awt.event.KeyEvent#VK_KANA_LOCK VK_KANA_LOCK}.
1439 * <p>
1440 * Depending on the platform, setting the state of a locking key may
1441 * involve event processing and therefore may not be immediately
1442 * observable through getLockingKeyState.
1443 *
1444 * @exception java.lang.IllegalArgumentException if <code>keyCode</code>
1445 * is not one of the valid key codes
1446 * @exception java.lang.UnsupportedOperationException if the host system doesn't
1447 * allow setting the state of this key programmatically, or if the keyboard
1448 * doesn't have this key
1449 * @exception HeadlessException if GraphicsEnvironment.isHeadless()
1450 * returns true
1451 * @see java.awt.GraphicsEnvironment#isHeadless
1452 * @since 1.3
1453 */
1454 public void setLockingKeyState(int keyCode, boolean on)
1455 throws UnsupportedOperationException {
1456 if (! (keyCode == KeyEvent.VK_CAPS_LOCK || keyCode == KeyEvent.VK_NUM_LOCK ||
1457 keyCode == KeyEvent.VK_SCROLL_LOCK || keyCode == KeyEvent.VK_KANA_LOCK)) {
1458 throw new IllegalArgumentException("invalid key for Toolkit.setLockingKeyState");
1459 }
1460 throw new UnsupportedOperationException("Toolkit.setLockingKeyState");
1461 }
1462
1463 /**
1464 * Give native peers the ability to query the native container
1465 * given a native component (eg the direct parent may be lightweight).
1466 */
1467 protected static Container getNativeContainer(Component c) {
1468 return c.getNativeContainer();
1469 }
1470
1471 /**
1472 * Creates a new custom cursor object.
1473 * If the image to display is invalid, the cursor will be hidden (made
1474 * completely transparent), and the hotspot will be set to (0, 0).
1475 *
1476 * <p>Note that multi-frame images are invalid and may cause this
1477 * method to hang.
1478 *
1479 * @param cursor the image to display when the cursor is actived
1480 * @param hotSpot the X and Y of the large cursor's hot spot; the
1481 * hotSpot values must be less than the Dimension returned by
1482 * <code>getBestCursorSize</code>
1483 * @param name a localized description of the cursor, for Java Accessibility use
1484 * @exception IndexOutOfBoundsException if the hotSpot values are outside
1485 * the bounds of the cursor
1486 * @exception HeadlessException if GraphicsEnvironment.isHeadless()
1487 * returns true
1488 * @see java.awt.GraphicsEnvironment#isHeadless
1489 * @since 1.2
1490 */
1491 public Cursor createCustomCursor(Image cursor, Point hotSpot, String name)
1492 throws IndexOutOfBoundsException, HeadlessException
1493 {
1494 // Override to implement custom cursor support.
1495 if (this != Toolkit.getDefaultToolkit()) {
1496 return Toolkit.getDefaultToolkit().
1497 createCustomCursor(cursor, hotSpot, name);
1498 } else {
1499 return new Cursor(Cursor.DEFAULT_CURSOR);
1500 }
1501 }
1502
1503 /**
1504 * Returns the supported cursor dimension which is closest to the desired
1505 * sizes. Systems which only support a single cursor size will return that
1506 * size regardless of the desired sizes. Systems which don't support custom
1507 * cursors will return a dimension of 0, 0. <p>
1508 * Note: if an image is used whose dimensions don't match a supported size
1509 * (as returned by this method), the Toolkit implementation will attempt to
1510 * resize the image to a supported size.
1511 * Since converting low-resolution images is difficult,
1512 * no guarantees are made as to the quality of a cursor image which isn't a
1513 * supported size. It is therefore recommended that this method
1514 * be called and an appropriate image used so no image conversion is made.
1515 *
1516 * @param preferredWidth the preferred cursor width the component would like
1517 * to use.
1518 * @param preferredHeight the preferred cursor height the component would like
1519 * to use.
1520 * @return the closest matching supported cursor size, or a dimension of 0,0 if
1521 * the Toolkit implementation doesn't support custom cursors.
1522 * @exception HeadlessException if GraphicsEnvironment.isHeadless()
1523 * returns true
1524 * @see java.awt.GraphicsEnvironment#isHeadless
1525 * @since 1.2
1526 */
1527 public Dimension getBestCursorSize(int preferredWidth,
1528 int preferredHeight) throws HeadlessException {
1529 // Override to implement custom cursor support.
1530 if (this != Toolkit.getDefaultToolkit()) {
1531 return Toolkit.getDefaultToolkit().
1532 getBestCursorSize(preferredWidth, preferredHeight);
1533 } else {
1534 return new Dimension(0, 0);
1535 }
1536 }
1537
1538 /**
1539 * Returns the maximum number of colors the Toolkit supports in a custom cursor
1540 * palette.<p>
1541 * Note: if an image is used which has more colors in its palette than
1542 * the supported maximum, the Toolkit implementation will attempt to flatten the
1543 * palette to the maximum. Since converting low-resolution images is difficult,
1544 * no guarantees are made as to the quality of a cursor image which has more
1545 * colors than the system supports. It is therefore recommended that this method
1546 * be called and an appropriate image used so no image conversion is made.
1547 *
1548 * @return the maximum number of colors, or zero if custom cursors are not
1549 * supported by this Toolkit implementation.
1550 * @exception HeadlessException if GraphicsEnvironment.isHeadless()
1551 * returns true
1552 * @see java.awt.GraphicsEnvironment#isHeadless
1553 * @since 1.2
1554 */
1555 public int getMaximumCursorColors() throws HeadlessException {
1556 // Override to implement custom cursor support.
1557 if (this != Toolkit.getDefaultToolkit()) {
1558 return Toolkit.getDefaultToolkit().getMaximumCursorColors();
1559 } else {
1560 return 0;
1561 }
1562 }
1563
1564 /**
1565 * Returns whether Toolkit supports this state for
1566 * <code>Frame</code>s. This method tells whether the <em>UI
1567 * concept</em> of, say, maximization or iconification is
1568 * supported. It will always return false for "compound" states
1569 * like <code>Frame.ICONIFIED|Frame.MAXIMIZED_VERT</code>.
1570 * In other words, the rule of thumb is that only queries with a
1571 * single frame state constant as an argument are meaningful.
1572 * <p>Note that supporting a given concept is a platform-
1573 * dependent feature. Due to native limitations the Toolkit
1574 * object may report a particular state as supported, however at
1575 * the same time the Toolkit object will be unable to apply the
1576 * state to a given frame. This circumstance has two following
1577 * consequences:
1578 * <ul>
1579 * <li>Only the return value of {@code false} for the present
1580 * method actually indicates that the given state is not
1581 * supported. If the method returns {@code true} the given state
1582 * may still be unsupported and/or unavailable for a particular
1583 * frame.
1584 * <li>The developer should consider examining the value of the
1585 * {@link java.awt.event.WindowEvent#getNewState} method of the
1586 * {@code WindowEvent} received through the {@link
1587 * java.awt.event.WindowStateListener}, rather than assuming
1588 * that the state given to the {@code setExtendedState()} method
1589 * will be definitely applied. For more information see the
1590 * documentation for the {@link Frame#setExtendedState} method.
1591 * </ul>
1592 *
1593 * @param state one of named frame state constants.
1594 * @return <code>true</code> is this frame state is supported by
1595 * this Toolkit implementation, <code>false</code> otherwise.
1596 * @exception HeadlessException
1597 * if <code>GraphicsEnvironment.isHeadless()</code>
1598 * returns <code>true</code>.
1599 * @see java.awt.Window#addWindowStateListener
1600 * @since 1.4
1601 */
1602 public boolean isFrameStateSupported(int state)
1603 throws HeadlessException
1604 {
1605 if (GraphicsEnvironment.isHeadless()){
1606 throw new HeadlessException();
1607 }
1608 if (this != Toolkit.getDefaultToolkit()) {
1609 return Toolkit.getDefaultToolkit().
1610 isFrameStateSupported(state);
1611 } else {
1612 return (state == Frame.NORMAL); // others are not guaranteed
1613 }
1614 }
1615
1616 /**
1617 * Support for I18N: any visible strings should be stored in
1618 * sun.awt.resources.awt.properties. The ResourceBundle is stored
1619 * here, so that only one copy is maintained.
1620 */
1621 private static ResourceBundle resources;
1622
1623 /**
1624 * Initialize JNI field and method ids
1625 */
1626 private static native void initIDs();
1627
1628 /**
1629 * WARNING: This is a temporary workaround for a problem in the
1630 * way the AWT loads native libraries. A number of classes in the
1631 * AWT package have a native method, initIDs(), which initializes
1632 * the JNI field and method ids used in the native portion of
1633 * their implementation.
1634 *
1635 * Since the use and storage of these ids is done by the
1636 * implementation libraries, the implementation of these method is
1637 * provided by the particular AWT implementations (for example,
1638 * "Toolkit"s/Peer), such as Motif, Microsoft Windows, or Tiny. The
1639 * problem is that this means that the native libraries must be
1640 * loaded by the java.* classes, which do not necessarily know the
1641 * names of the libraries to load. A better way of doing this
1642 * would be to provide a separate library which defines java.awt.*
1643 * initIDs, and exports the relevant symbols out to the
1644 * implementation libraries.
1645 *
1646 * For now, we know it's done by the implementation, and we assume
1647 * that the name of the library is "awt". -br.
1648 *
1649 * If you change loadLibraries(), please add the change to
1650 * java.awt.image.ColorModel.loadLibraries(). Unfortunately,
1651 * classes can be loaded in java.awt.image that depend on
1652 * libawt and there is no way to call Toolkit.loadLibraries()
1653 * directly. -hung
1654 */
1655 private static boolean loaded = false;
1656 static void loadLibraries() {
1657 if (!loaded) {
1658 java.security.AccessController.doPrivileged(
1659 new sun.security.action.LoadLibraryAction("awt"));
1660 loaded = true;
1661 }
1662 }
1663
1664 static {
1665 java.security.AccessController.doPrivileged(
1666 new java.security.PrivilegedAction() {
1667 public Object run() {
1668 try {
1669 resources =
1670 ResourceBundle.getBundle("sun.awt.resources.awt",
1671 CoreResourceBundleControl.getRBControlInstance());
1672 } catch (MissingResourceException e) {
1673 // No resource file; defaults will be used.
1674 }
1675 return null;
1676 }
1677 });
1678
1679 // ensure that the proper libraries are loaded
1680 loadLibraries();
1681 initAssistiveTechnologies();
1682 if (!GraphicsEnvironment.isHeadless()) {
1683 initIDs();
1684 }
1685 }
1686
1687 /**
1688 * Gets a property with the specified key and default.
1689 * This method returns defaultValue if the property is not found.
1690 */
1691 public static String getProperty(String key, String defaultValue) {
1692 if (resources != null) {
1693 try {
1694 return resources.getString(key);
1695 }
1696 catch (MissingResourceException e) {}
1697 }
1698
1699 return defaultValue;
1700 }
1701
1702 /**
1703 * Get the application's or applet's EventQueue instance.
1704 * Depending on the Toolkit implementation, different EventQueues
1705 * may be returned for different applets. Applets should
1706 * therefore not assume that the EventQueue instance returned
1707 * by this method will be shared by other applets or the system.
1708 *
1709 * <p>First, if there is a security manager, its
1710 * <code>checkAwtEventQueueAccess</code>
1711 * method is called.
1712 * If the default implementation of <code>checkAwtEventQueueAccess</code>
1713 * is used (that is, that method is not overriden), then this results in
1714 * a call to the security manager's <code>checkPermission</code> method
1715 * with an <code>AWTPermission("accessEventQueue")</code> permission.
1716 *
1717 * @return the <code>EventQueue</code> object
1718 * @throws SecurityException
1719 * if a security manager exists and its <code>{@link
1720 * java.lang.SecurityManager#checkAwtEventQueueAccess}</code>
1721 * method denies access to the <code>EventQueue</code>
1722 * @see java.awt.AWTPermission
1723 */
1724 public final EventQueue getSystemEventQueue() {
1725 SecurityManager security = System.getSecurityManager();
1726 if (security != null) {
1727 security.checkAwtEventQueueAccess();
1728 }
1729 return getSystemEventQueueImpl();
1730 }
1731
1732 /**
1733 * Gets the application's or applet's <code>EventQueue</code>
1734 * instance, without checking access. For security reasons,
1735 * this can only be called from a <code>Toolkit</code> subclass.
1736 * @return the <code>EventQueue</code> object
1737 */
1738 protected abstract EventQueue getSystemEventQueueImpl();
1739
1740 /* Accessor method for use by AWT package routines. */
1741 static EventQueue getEventQueue() {
1742 return getDefaultToolkit().getSystemEventQueueImpl();
1743 }
1744
1745 /**
1746 * Creates the peer for a DragSourceContext.
1747 * Always throws InvalidDndOperationException if
1748 * GraphicsEnvironment.isHeadless() returns true.
1749 * @see java.awt.GraphicsEnvironment#isHeadless
1750 */
1751 public abstract DragSourceContextPeer createDragSourceContextPeer(DragGestureEvent dge) throws InvalidDnDOperationException;
1752
1753 /**
1754 * Creates a concrete, platform dependent, subclass of the abstract
1755 * DragGestureRecognizer class requested, and associates it with the
1756 * DragSource, Component and DragGestureListener specified.
1757 *
1758 * subclasses should override this to provide their own implementation
1759 *
1760 * @param abstractRecognizerClass The abstract class of the required recognizer
1761 * @param ds The DragSource
1762 * @param c The Component target for the DragGestureRecognizer
1763 * @param srcActions The actions permitted for the gesture
1764 * @param dgl The DragGestureListener
1765 *
1766 * @return the new object or null. Always returns null if
1767 * GraphicsEnvironment.isHeadless() returns true.
1768 * @see java.awt.GraphicsEnvironment#isHeadless
1769 */
1770 public <T extends DragGestureRecognizer> T
1771 createDragGestureRecognizer(Class<T> abstractRecognizerClass,
1772 DragSource ds, Component c, int srcActions,
1773 DragGestureListener dgl)
1774 {
1775 return null;
1776 }
1777
1778 /**
1779 * Obtains a value for the specified desktop property.
1780 *
1781 * A desktop property is a uniquely named value for a resource that
1782 * is Toolkit global in nature. Usually it also is an abstract
1783 * representation for an underlying platform dependent desktop setting.
1784 * For more information on desktop properties supported by the AWT see
1785 * <a href="doc-files/DesktopProperties.html">AWT Desktop Properties</a>.
1786 */
1787 public final synchronized Object getDesktopProperty(String propertyName) {
1788 // This is a workaround for headless toolkits. It would be
1789 // better to override this method but it is declared final.
1790 // "this instanceof" syntax defeats polymorphism.
1791 // --mm, 03/03/00
1792 if (this instanceof HeadlessToolkit) {
1793 return ((HeadlessToolkit)this).getUnderlyingToolkit()
1794 .getDesktopProperty(propertyName);
1795 }
1796
1797 if (desktopProperties.isEmpty()) {
1798 initializeDesktopProperties();
1799 }
1800
1801 Object value;
1802
1803 // This property should never be cached
1804 if (propertyName.equals("awt.dynamicLayoutSupported")) {
1805 value = lazilyLoadDesktopProperty(propertyName);
1806 return value;
1807 }
1808
1809 value = desktopProperties.get(propertyName);
1810
1811 if (value == null) {
1812 value = lazilyLoadDesktopProperty(propertyName);
1813
1814 if (value != null) {
1815 setDesktopProperty(propertyName, value);
1816 }
1817 }
1818
1819 /* for property "awt.font.desktophints" */
1820 if (value instanceof RenderingHints) {
1821 value = ((RenderingHints)value).clone();
1822 }
1823
1824 return value;
1825 }
1826
1827 /**
1828 * Sets the named desktop property to the specified value and fires a
1829 * property change event to notify any listeners that the value has changed.
1830 */
1831 protected final void setDesktopProperty(String name, Object newValue) {
1832 // This is a workaround for headless toolkits. It would be
1833 // better to override this method but it is declared final.
1834 // "this instanceof" syntax defeats polymorphism.
1835 // --mm, 03/03/00
1836 if (this instanceof HeadlessToolkit) {
1837 ((HeadlessToolkit)this).getUnderlyingToolkit()
1838 .setDesktopProperty(name, newValue);
1839 return;
1840 }
1841 Object oldValue;
1842
1843 synchronized (this) {
1844 oldValue = desktopProperties.get(name);
1845 desktopProperties.put(name, newValue);
1846 }
1847
1848 desktopPropsSupport.firePropertyChange(name, oldValue, newValue);
1849 }
1850
1851 /**
1852 * an opportunity to lazily evaluate desktop property values.
1853 */
1854 protected Object lazilyLoadDesktopProperty(String name) {
1855 return null;
1856 }
1857
1858 /**
1859 * initializeDesktopProperties
1860 */
1861 protected void initializeDesktopProperties() {
1862 }
1863
1864 /**
1865 * Adds the specified property change listener for the named desktop
1866 * property.
1867 * If pcl is null, no exception is thrown and no action is performed.
1868 *
1869 * @param name The name of the property to listen for
1870 * @param pcl The property change listener
1871 * @since 1.2
1872 */
1873 public void addPropertyChangeListener(String name, PropertyChangeListener pcl) {
1874 desktopPropsSupport.addPropertyChangeListener(name, pcl);
1875 }
1876
1877 /**
1878 * Removes the specified property change listener for the named
1879 * desktop property.
1880 * If pcl is null, no exception is thrown and no action is performed.
1881 *
1882 * @param name The name of the property to remove
1883 * @param pcl The property change listener
1884 * @since 1.2
1885 */
1886 public void removePropertyChangeListener(String name, PropertyChangeListener pcl) {
1887 desktopPropsSupport.removePropertyChangeListener(name, pcl);
1888 }
1889
1890 /**
1891 * Returns an array of all the property change listeners
1892 * registered on this toolkit.
1893 *
1894 * @return all of this toolkit's <code>PropertyChangeListener</code>s
1895 * or an empty array if no property change
1896 * listeners are currently registered
1897 *
1898 * @since 1.4
1899 */
1900 public PropertyChangeListener[] getPropertyChangeListeners() {
1901 return desktopPropsSupport.getPropertyChangeListeners();
1902 }
1903
1904 /**
1905 * Returns an array of all the <code>PropertyChangeListener</code>s
1906 * associated with the named property.
1907 *
1908 * @param propertyName the named property
1909 * @return all of the <code>PropertyChangeListener</code>s associated with
1910 * the named property or an empty array if no such listeners have
1911 * been added
1912 * @since 1.4
1913 */
1914 public PropertyChangeListener[] getPropertyChangeListeners(String propertyName) {
1915 return desktopPropsSupport.getPropertyChangeListeners(propertyName);
1916 }
1917
1918 protected final Map<String,Object> desktopProperties =
1919 new HashMap<String,Object>();
1920 protected final PropertyChangeSupport desktopPropsSupport =
1921 Toolkit.createPropertyChangeSupport(this);
1922
1923 /**
1924 * Returns whether the always-on-top mode is supported by this toolkit.
1925 * To detect whether the always-on-top mode is supported for a
1926 * particular Window, use {@link Window#isAlwaysOnTopSupported}.
1927 * @return <code>true</code>, if current toolkit supports the always-on-top mode,
1928 * otherwise returns <code>false</code>
1929 * @see Window#isAlwaysOnTopSupported
1930 * @see Window#setAlwaysOnTop(boolean)
1931 * @since 1.6
1932 */
1933 public boolean isAlwaysOnTopSupported() {
1934 return true;
1935 }
1936
1937 /**
1938 * Returns whether the given modality type is supported by this toolkit. If
1939 * a dialog with unsupported modality type is created, then
1940 * <code>Dialog.ModalityType.MODELESS</code> is used instead.
1941 *
1942 * @param modalityType modality type to be checked for support by this toolkit
1943 *
1944 * @return <code>true</code>, if current toolkit supports given modality
1945 * type, <code>false</code> otherwise
1946 *
1947 * @see java.awt.Dialog.ModalityType
1948 * @see java.awt.Dialog#getModalityType
1949 * @see java.awt.Dialog#setModalityType
1950 *
1951 * @since 1.6
1952 */
1953 public abstract boolean isModalityTypeSupported(Dialog.ModalityType modalityType);
1954
1955 /**
1956 * Returns whether the given modal exclusion type is supported by this
1957 * toolkit. If an unsupported modal exclusion type property is set on a window,
1958 * then <code>Dialog.ModalExclusionType.NO_EXCLUDE</code> is used instead.
1959 *
1960 * @param modalExclusionType modal exclusion type to be checked for support by this toolkit
1961 *
1962 * @return <code>true</code>, if current toolkit supports given modal exclusion
1963 * type, <code>false</code> otherwise
1964 *
1965 * @see java.awt.Dialog.ModalExclusionType
1966 * @see java.awt.Window#getModalExclusionType
1967 * @see java.awt.Window#setModalExclusionType
1968 *
1969 * @since 1.6
1970 */
1971 public abstract boolean isModalExclusionTypeSupported(Dialog.ModalExclusionType modalExclusionType);
1972
1973 private static final PlatformLogger log = PlatformLogger.getLogger("java.awt.Toolkit");
1974
1975 private static final int LONG_BITS = 64;
1976 private int[] calls = new int[LONG_BITS];
1977 private static volatile long enabledOnToolkitMask;
1978 private AWTEventListener eventListener = null;
1979 private WeakHashMap listener2SelectiveListener = new WeakHashMap();
1980
1981 /*
1982 * Extracts a "pure" AWTEventListener from a AWTEventListenerProxy,
1983 * if the listener is proxied.
1984 */
1985 static private AWTEventListener deProxyAWTEventListener(AWTEventListener l)
1986 {
1987 AWTEventListener localL = l;
1988
1989 if (localL == null) {
1990 return null;
1991 }
1992 // if user passed in a AWTEventListenerProxy object, extract
1993 // the listener
1994 if (l instanceof AWTEventListenerProxy) {
1995 localL = ((AWTEventListenerProxy)l).getListener();
1996 }
1997 return localL;
1998 }
1999
2000 /**
2001 * Adds an AWTEventListener to receive all AWTEvents dispatched
2002 * system-wide that conform to the given <code>eventMask</code>.
2003 * <p>
2004 * First, if there is a security manager, its <code>checkPermission</code>
2005 * method is called with an
2006 * <code>AWTPermission("listenToAllAWTEvents")</code> permission.
2007 * This may result in a SecurityException.
2008 * <p>
2009 * <code>eventMask</code> is a bitmask of event types to receive.
2010 * It is constructed by bitwise OR-ing together the event masks
2011 * defined in <code>AWTEvent</code>.
2012 * <p>
2013 * Note: event listener use is not recommended for normal
2014 * application use, but are intended solely to support special
2015 * purpose facilities including support for accessibility,
2016 * event record/playback, and diagnostic tracing.
2017 *
2018 * If listener is null, no exception is thrown and no action is performed.
2019 *
2020 * @param listener the event listener.
2021 * @param eventMask the bitmask of event types to receive
2022 * @throws SecurityException
2023 * if a security manager exists and its
2024 * <code>checkPermission</code> method doesn't allow the operation.
2025 * @see #removeAWTEventListener
2026 * @see #getAWTEventListeners
2027 * @see SecurityManager#checkPermission
2028 * @see java.awt.AWTEvent
2029 * @see java.awt.AWTPermission
2030 * @see java.awt.event.AWTEventListener
2031 * @see java.awt.event.AWTEventListenerProxy
2032 * @since 1.2
2033 */
2034 public void addAWTEventListener(AWTEventListener listener, long eventMask) {
2035 AWTEventListener localL = deProxyAWTEventListener(listener);
2036
2037 if (localL == null) {
2038 return;
2039 }
2040 SecurityManager security = System.getSecurityManager();
2041 if (security != null) {
2042 security.checkPermission(SecurityConstants.AWT.ALL_AWT_EVENTS_PERMISSION);
2043 }
2044 synchronized (this) {
2045 SelectiveAWTEventListener selectiveListener =
2046 (SelectiveAWTEventListener)listener2SelectiveListener.get(localL);
2047
2048 if (selectiveListener == null) {
2049 // Create a new selectiveListener.
2050 selectiveListener = new SelectiveAWTEventListener(localL,
2051 eventMask);
2052 listener2SelectiveListener.put(localL, selectiveListener);
2053 eventListener = ToolkitEventMulticaster.add(eventListener,
2054 selectiveListener);
2055 }
2056 // OR the eventMask into the selectiveListener's event mask.
2057 selectiveListener.orEventMasks(eventMask);
2058
2059 enabledOnToolkitMask |= eventMask;
2060
2061 long mask = eventMask;
2062 for (int i=0; i<LONG_BITS; i++) {
2063 // If no bits are set, break out of loop.
2064 if (mask == 0) {
2065 break;
2066 }
2067 if ((mask & 1L) != 0) { // Always test bit 0.
2068 calls[i]++;
2069 }
2070 mask >>>= 1; // Right shift, fill with zeros on left.
2071 }
2072 }
2073 }
2074
2075 /**
2076 * Removes an AWTEventListener from receiving dispatched AWTEvents.
2077 * <p>
2078 * First, if there is a security manager, its <code>checkPermission</code>
2079 * method is called with an
2080 * <code>AWTPermission("listenToAllAWTEvents")</code> permission.
2081 * This may result in a SecurityException.
2082 * <p>
2083 * Note: event listener use is not recommended for normal
2084 * application use, but are intended solely to support special
2085 * purpose facilities including support for accessibility,
2086 * event record/playback, and diagnostic tracing.
2087 *
2088 * If listener is null, no exception is thrown and no action is performed.
2089 *
2090 * @param listener the event listener.
2091 * @throws SecurityException
2092 * if a security manager exists and its
2093 * <code>checkPermission</code> method doesn't allow the operation.
2094 * @see #addAWTEventListener
2095 * @see #getAWTEventListeners
2096 * @see SecurityManager#checkPermission
2097 * @see java.awt.AWTEvent
2098 * @see java.awt.AWTPermission
2099 * @see java.awt.event.AWTEventListener
2100 * @see java.awt.event.AWTEventListenerProxy
2101 * @since 1.2
2102 */
2103 public void removeAWTEventListener(AWTEventListener listener) {
2104 AWTEventListener localL = deProxyAWTEventListener(listener);
2105
2106 if (listener == null) {
2107 return;
2108 }
2109 SecurityManager security = System.getSecurityManager();
2110 if (security != null) {
2111 security.checkPermission(SecurityConstants.AWT.ALL_AWT_EVENTS_PERMISSION);
2112 }
2113
2114 synchronized (this) {
2115 SelectiveAWTEventListener selectiveListener =
2116 (SelectiveAWTEventListener)listener2SelectiveListener.get(localL);
2117
2118 if (selectiveListener != null) {
2119 listener2SelectiveListener.remove(localL);
2120 int[] listenerCalls = selectiveListener.getCalls();
2121 for (int i=0; i<LONG_BITS; i++) {
2122 calls[i] -= listenerCalls[i];
2123 assert calls[i] >= 0: "Negative Listeners count";
2124
2125 if (calls[i] == 0) {
2126 enabledOnToolkitMask &= ~(1L<<i);
2127 }
2128 }
2129 }
2130 eventListener = ToolkitEventMulticaster.remove(eventListener,
2131 (selectiveListener == null) ? localL : selectiveListener);
2132 }
2133 }
2134
2135 static boolean enabledOnToolkit(long eventMask) {
2136 return (enabledOnToolkitMask & eventMask) != 0;
2137 }
2138
2139 synchronized int countAWTEventListeners(long eventMask) {
2140 if (log.isLoggable(PlatformLogger.FINE)) {
2141 if (eventMask == 0) {
2142 log.fine("Assertion (eventMask != 0) failed");
2143 }
2144 }
2145
2146 int ci = 0;
2147 for (; eventMask != 0; eventMask >>>= 1, ci++) {
2148 }
2149 ci--;
2150 return calls[ci];
2151 }
2152 /**
2153 * Returns an array of all the <code>AWTEventListener</code>s
2154 * registered on this toolkit.
2155 * If there is a security manager, its {@code checkPermission}
2156 * method is called with an
2157 * {@code AWTPermission("listenToAllAWTEvents")} permission.
2158 * This may result in a SecurityException.
2159 * Listeners can be returned
2160 * within <code>AWTEventListenerProxy</code> objects, which also contain
2161 * the event mask for the given listener.
2162 * Note that listener objects
2163 * added multiple times appear only once in the returned array.
2164 *
2165 * @return all of the <code>AWTEventListener</code>s or an empty
2166 * array if no listeners are currently registered
2167 * @throws SecurityException
2168 * if a security manager exists and its
2169 * <code>checkPermission</code> method doesn't allow the operation.
2170 * @see #addAWTEventListener
2171 * @see #removeAWTEventListener
2172 * @see SecurityManager#checkPermission
2173 * @see java.awt.AWTEvent
2174 * @see java.awt.AWTPermission
2175 * @see java.awt.event.AWTEventListener
2176 * @see java.awt.event.AWTEventListenerProxy
2177 * @since 1.4
2178 */
2179 public AWTEventListener[] getAWTEventListeners() {
2180 SecurityManager security = System.getSecurityManager();
2181 if (security != null) {
2182 security.checkPermission(SecurityConstants.AWT.ALL_AWT_EVENTS_PERMISSION);
2183 }
2184 synchronized (this) {
2185 EventListener[] la = ToolkitEventMulticaster.getListeners(eventListener,AWTEventListener.class);
2186
2187 AWTEventListener[] ret = new AWTEventListener[la.length];
2188 for (int i = 0; i < la.length; i++) {
2189 SelectiveAWTEventListener sael = (SelectiveAWTEventListener)la[i];
2190 AWTEventListener tempL = sael.getListener();
2191 //assert tempL is not an AWTEventListenerProxy - we should
2192 // have weeded them all out
2193 // don't want to wrap a proxy inside a proxy
2194 ret[i] = new AWTEventListenerProxy(sael.getEventMask(), tempL);
2195 }
2196 return ret;
2197 }
2198 }
2199
2200 /**
2201 * Returns an array of all the <code>AWTEventListener</code>s
2202 * registered on this toolkit which listen to all of the event
2203 * types specified in the {@code eventMask} argument.
2204 * If there is a security manager, its {@code checkPermission}
2205 * method is called with an
2206 * {@code AWTPermission("listenToAllAWTEvents")} permission.
2207 * This may result in a SecurityException.
2208 * Listeners can be returned
2209 * within <code>AWTEventListenerProxy</code> objects, which also contain
2210 * the event mask for the given listener.
2211 * Note that listener objects
2212 * added multiple times appear only once in the returned array.
2213 *
2214 * @param eventMask the bitmask of event types to listen for
2215 * @return all of the <code>AWTEventListener</code>s registered
2216 * on this toolkit for the specified
2217 * event types, or an empty array if no such listeners
2218 * are currently registered
2219 * @throws SecurityException
2220 * if a security manager exists and its
2221 * <code>checkPermission</code> method doesn't allow the operation.
2222 * @see #addAWTEventListener
2223 * @see #removeAWTEventListener
2224 * @see SecurityManager#checkPermission
2225 * @see java.awt.AWTEvent
2226 * @see java.awt.AWTPermission
2227 * @see java.awt.event.AWTEventListener
2228 * @see java.awt.event.AWTEventListenerProxy
2229 * @since 1.4
2230 */
2231 public AWTEventListener[] getAWTEventListeners(long eventMask) {
2232 SecurityManager security = System.getSecurityManager();
2233 if (security != null) {
2234 security.checkPermission(SecurityConstants.AWT.ALL_AWT_EVENTS_PERMISSION);
2235 }
2236 synchronized (this) {
2237 EventListener[] la = ToolkitEventMulticaster.getListeners(eventListener,AWTEventListener.class);
2238
2239 java.util.List list = new ArrayList(la.length);
2240
2241 for (int i = 0; i < la.length; i++) {
2242 SelectiveAWTEventListener sael = (SelectiveAWTEventListener)la[i];
2243 if ((sael.getEventMask() & eventMask) == eventMask) {
2244 //AWTEventListener tempL = sael.getListener();
2245 list.add(new AWTEventListenerProxy(sael.getEventMask(),
2246 sael.getListener()));
2247 }
2248 }
2249 return (AWTEventListener[])list.toArray(new AWTEventListener[0]);
2250 }
2251 }
2252
2253 /*
2254 * This method notifies any AWTEventListeners that an event
2255 * is about to be dispatched.
2256 *
2257 * @param theEvent the event which will be dispatched.
2258 */
2259 void notifyAWTEventListeners(AWTEvent theEvent) {
2260 // This is a workaround for headless toolkits. It would be
2261 // better to override this method but it is declared package private.
2262 // "this instanceof" syntax defeats polymorphism.
2263 // --mm, 03/03/00
2264 if (this instanceof HeadlessToolkit) {
2265 ((HeadlessToolkit)this).getUnderlyingToolkit()
2266 .notifyAWTEventListeners(theEvent);
2267 return;
2268 }
2269
2270 AWTEventListener eventListener = this.eventListener;
2271 if (eventListener != null) {
2272 eventListener.eventDispatched(theEvent);
2273 }
2274 }
2275
2276 static private class ToolkitEventMulticaster extends AWTEventMulticaster
2277 implements AWTEventListener {
2278 // Implementation cloned from AWTEventMulticaster.
2279
2280 ToolkitEventMulticaster(AWTEventListener a, AWTEventListener b) {
2281 super(a, b);
2282 }
2283
2284 static AWTEventListener add(AWTEventListener a,
2285 AWTEventListener b) {
2286 if (a == null) return b;
2287 if (b == null) return a;
2288 return new ToolkitEventMulticaster(a, b);
2289 }
2290
2291 static AWTEventListener remove(AWTEventListener l,
2292 AWTEventListener oldl) {
2293 return (AWTEventListener) removeInternal(l, oldl);
2294 }
2295
2296 // #4178589: must overload remove(EventListener) to call our add()
2297 // instead of the static addInternal() so we allocate a
2298 // ToolkitEventMulticaster instead of an AWTEventMulticaster.
2299 // Note: this method is called by AWTEventListener.removeInternal(),
2300 // so its method signature must match AWTEventListener.remove().
2301 protected EventListener remove(EventListener oldl) {
2302 if (oldl == a) return b;
2303 if (oldl == b) return a;
2304 AWTEventListener a2 = (AWTEventListener)removeInternal(a, oldl);
2305 AWTEventListener b2 = (AWTEventListener)removeInternal(b, oldl);
2306 if (a2 == a && b2 == b) {
2307 return this; // it's not here
2308 }
2309 return add(a2, b2);
2310 }
2311
2312 public void eventDispatched(AWTEvent event) {
2313 ((AWTEventListener)a).eventDispatched(event);
2314 ((AWTEventListener)b).eventDispatched(event);
2315 }
2316 }
2317
2318 private class SelectiveAWTEventListener implements AWTEventListener {
2319 AWTEventListener listener;
2320 private long eventMask;
2321 // This array contains the number of times to call the eventlistener
2322 // for each event type.
2323 int[] calls = new int[Toolkit.LONG_BITS];
2324
2325 public AWTEventListener getListener() {return listener;}
2326 public long getEventMask() {return eventMask;}
2327 public int[] getCalls() {return calls;}
2328
2329 public void orEventMasks(long mask) {
2330 eventMask |= mask;
2331 // For each event bit set in mask, increment its call count.
2332 for (int i=0; i<Toolkit.LONG_BITS; i++) {
2333 // If no bits are set, break out of loop.
2334 if (mask == 0) {
2335 break;
2336 }
2337 if ((mask & 1L) != 0) { // Always test bit 0.
2338 calls[i]++;
2339 }
2340 mask >>>= 1; // Right shift, fill with zeros on left.
2341 }
2342 }
2343
2344 SelectiveAWTEventListener(AWTEventListener l, long mask) {
2345 listener = l;
2346 eventMask = mask;
2347 }
2348
2349 public void eventDispatched(AWTEvent event) {
2350 long eventBit = 0; // Used to save the bit of the event type.
2351 if (((eventBit = eventMask & AWTEvent.COMPONENT_EVENT_MASK) != 0 &&
2352 event.id >= ComponentEvent.COMPONENT_FIRST &&
2353 event.id <= ComponentEvent.COMPONENT_LAST)
2354 || ((eventBit = eventMask & AWTEvent.CONTAINER_EVENT_MASK) != 0 &&
2355 event.id >= ContainerEvent.CONTAINER_FIRST &&
2356 event.id <= ContainerEvent.CONTAINER_LAST)
2357 || ((eventBit = eventMask & AWTEvent.FOCUS_EVENT_MASK) != 0 &&
2358 event.id >= FocusEvent.FOCUS_FIRST &&
2359 event.id <= FocusEvent.FOCUS_LAST)
2360 || ((eventBit = eventMask & AWTEvent.KEY_EVENT_MASK) != 0 &&
2361 event.id >= KeyEvent.KEY_FIRST &&
2362 event.id <= KeyEvent.KEY_LAST)
2363 || ((eventBit = eventMask & AWTEvent.MOUSE_WHEEL_EVENT_MASK) != 0 &&
2364 event.id == MouseEvent.MOUSE_WHEEL)
2365 || ((eventBit = eventMask & AWTEvent.MOUSE_MOTION_EVENT_MASK) != 0 &&
2366 (event.id == MouseEvent.MOUSE_MOVED ||
2367 event.id == MouseEvent.MOUSE_DRAGGED))
2368 || ((eventBit = eventMask & AWTEvent.MOUSE_EVENT_MASK) != 0 &&
2369 event.id != MouseEvent.MOUSE_MOVED &&
2370 event.id != MouseEvent.MOUSE_DRAGGED &&
2371 event.id != MouseEvent.MOUSE_WHEEL &&
2372 event.id >= MouseEvent.MOUSE_FIRST &&
2373 event.id <= MouseEvent.MOUSE_LAST)
2374 || ((eventBit = eventMask & AWTEvent.WINDOW_EVENT_MASK) != 0 &&
2375 (event.id >= WindowEvent.WINDOW_FIRST &&
2376 event.id <= WindowEvent.WINDOW_LAST))
2377 || ((eventBit = eventMask & AWTEvent.ACTION_EVENT_MASK) != 0 &&
2378 event.id >= ActionEvent.ACTION_FIRST &&
2379 event.id <= ActionEvent.ACTION_LAST)
2380 || ((eventBit = eventMask & AWTEvent.ADJUSTMENT_EVENT_MASK) != 0 &&
2381 event.id >= AdjustmentEvent.ADJUSTMENT_FIRST &&
2382 event.id <= AdjustmentEvent.ADJUSTMENT_LAST)
2383 || ((eventBit = eventMask & AWTEvent.ITEM_EVENT_MASK) != 0 &&
2384 event.id >= ItemEvent.ITEM_FIRST &&
2385 event.id <= ItemEvent.ITEM_LAST)
2386 || ((eventBit = eventMask & AWTEvent.TEXT_EVENT_MASK) != 0 &&
2387 event.id >= TextEvent.TEXT_FIRST &&
2388 event.id <= TextEvent.TEXT_LAST)
2389 || ((eventBit = eventMask & AWTEvent.INPUT_METHOD_EVENT_MASK) != 0 &&
2390 event.id >= InputMethodEvent.INPUT_METHOD_FIRST &&
2391 event.id <= InputMethodEvent.INPUT_METHOD_LAST)
2392 || ((eventBit = eventMask & AWTEvent.PAINT_EVENT_MASK) != 0 &&
2393 event.id >= PaintEvent.PAINT_FIRST &&
2394 event.id <= PaintEvent.PAINT_LAST)
2395 || ((eventBit = eventMask & AWTEvent.INVOCATION_EVENT_MASK) != 0 &&
2396 event.id >= InvocationEvent.INVOCATION_FIRST &&
2397 event.id <= InvocationEvent.INVOCATION_LAST)
2398 || ((eventBit = eventMask & AWTEvent.HIERARCHY_EVENT_MASK) != 0 &&
2399 event.id == HierarchyEvent.HIERARCHY_CHANGED)
2400 || ((eventBit = eventMask & AWTEvent.HIERARCHY_BOUNDS_EVENT_MASK) != 0 &&
2401 (event.id == HierarchyEvent.ANCESTOR_MOVED ||
2402 event.id == HierarchyEvent.ANCESTOR_RESIZED))
2403 || ((eventBit = eventMask & AWTEvent.WINDOW_STATE_EVENT_MASK) != 0 &&
2404 event.id == WindowEvent.WINDOW_STATE_CHANGED)
2405 || ((eventBit = eventMask & AWTEvent.WINDOW_FOCUS_EVENT_MASK) != 0 &&
2406 (event.id == WindowEvent.WINDOW_GAINED_FOCUS ||
2407 event.id == WindowEvent.WINDOW_LOST_FOCUS))
2408 || ((eventBit = eventMask & sun.awt.SunToolkit.GRAB_EVENT_MASK) != 0 &&
2409 (event instanceof sun.awt.UngrabEvent))) {
2410 // Get the index of the call count for this event type.
2411 // Instead of using Math.log(...) we will calculate it with
2412 // bit shifts. That's what previous implementation looked like:
2413 //
2414 // int ci = (int) (Math.log(eventBit)/Math.log(2));
2415 int ci = 0;
2416 for (long eMask = eventBit; eMask != 0; eMask >>>= 1, ci++) {
2417 }
2418 ci--;
2419 // Call the listener as many times as it was added for this
2420 // event type.
2421 for (int i=0; i<calls[ci]; i++) {
2422 listener.eventDispatched(event);
2423 }
2424 }
2425 }
2426 }
2427
2428 /**
2429 * Returns a map of visual attributes for the abstract level description
2430 * of the given input method highlight, or null if no mapping is found.
2431 * The style field of the input method highlight is ignored. The map
2432 * returned is unmodifiable.
2433 * @param highlight input method highlight
2434 * @return style attribute map, or <code>null</code>
2435 * @exception HeadlessException if
2436 * <code>GraphicsEnvironment.isHeadless</code> returns true
2437 * @see java.awt.GraphicsEnvironment#isHeadless
2438 * @since 1.3
2439 */
2440 public abstract Map<java.awt.font.TextAttribute,?>
2441 mapInputMethodHighlight(InputMethodHighlight highlight)
2442 throws HeadlessException;
2443
2444 private static PropertyChangeSupport createPropertyChangeSupport(Toolkit toolkit) {
2445 if (toolkit instanceof SunToolkit || toolkit instanceof HeadlessToolkit) {
2446 return new DesktopPropertyChangeSupport(toolkit);
2447 } else {
2448 return new PropertyChangeSupport(toolkit);
2449 }
2450 }
2451
2452 private static class DesktopPropertyChangeSupport extends PropertyChangeSupport {
2453 private static final StringBuilder PROP_CHANGE_SUPPORT_KEY =
2454 new StringBuilder("desktop property change support key");
2455 private final Object source;
2456
2457 public DesktopPropertyChangeSupport(Object sourceBean) {
2458 super(sourceBean);
2459 source = sourceBean;
2460 }
2461
2462 @Override
2463 public synchronized void addPropertyChangeListener(
2464 String propertyName,
2465 PropertyChangeListener listener)
2466 {
2467 PropertyChangeSupport pcs = (PropertyChangeSupport)
2468 AppContext.getAppContext().get(PROP_CHANGE_SUPPORT_KEY);
2469 if (null == pcs) {
2470 pcs = new PropertyChangeSupport(source);
2471 AppContext.getAppContext().put(PROP_CHANGE_SUPPORT_KEY, pcs);
2472 }
2473 pcs.addPropertyChangeListener(propertyName, listener);
2474 }
2475
2476 @Override
2477 public synchronized void removePropertyChangeListener(
2478 String propertyName,
2479 PropertyChangeListener listener)
2480 {
2481 PropertyChangeSupport pcs = (PropertyChangeSupport)
2482 AppContext.getAppContext().get(PROP_CHANGE_SUPPORT_KEY);
2483 if (null != pcs) {
2484 pcs.removePropertyChangeListener(propertyName, listener);
2485 }
2486 }
2487
2488 @Override
2489 public synchronized PropertyChangeListener[] getPropertyChangeListeners()
2490 {
2491 PropertyChangeSupport pcs = (PropertyChangeSupport)
2492 AppContext.getAppContext().get(PROP_CHANGE_SUPPORT_KEY);
2493 if (null != pcs) {
2494 return pcs.getPropertyChangeListeners();
2495 } else {
2496 return new PropertyChangeListener[0];
2497 }
2498 }
2499
2500 @Override
2501 public synchronized PropertyChangeListener[] getPropertyChangeListeners(String propertyName)
2502 {
2503 PropertyChangeSupport pcs = (PropertyChangeSupport)
2504 AppContext.getAppContext().get(PROP_CHANGE_SUPPORT_KEY);
2505 if (null != pcs) {
2506 return pcs.getPropertyChangeListeners(propertyName);
2507 } else {
2508 return new PropertyChangeListener[0];
2509 }
2510 }
2511
2512 @Override
2513 public synchronized void addPropertyChangeListener(PropertyChangeListener listener) {
2514 PropertyChangeSupport pcs = (PropertyChangeSupport)
2515 AppContext.getAppContext().get(PROP_CHANGE_SUPPORT_KEY);
2516 if (null == pcs) {
2517 pcs = new PropertyChangeSupport(source);
2518 AppContext.getAppContext().put(PROP_CHANGE_SUPPORT_KEY, pcs);
2519 }
2520 pcs.addPropertyChangeListener(listener);
2521 }
2522
2523 @Override
2524 public synchronized void removePropertyChangeListener(PropertyChangeListener listener) {
2525 PropertyChangeSupport pcs = (PropertyChangeSupport)
2526 AppContext.getAppContext().get(PROP_CHANGE_SUPPORT_KEY);
2527 if (null != pcs) {
2528 pcs.removePropertyChangeListener(listener);
2529 }
2530 }
2531
2532 /*
2533 * we do expect that all other fireXXX() methods of java.beans.PropertyChangeSupport
2534 * use this method. If this will be changed we will need to change this class.
2535 */
2536 @Override
2537 public void firePropertyChange(final PropertyChangeEvent evt) {
2538 Object oldValue = evt.getOldValue();
2539 Object newValue = evt.getNewValue();
2540 String propertyName = evt.getPropertyName();
2541 if (oldValue != null && newValue != null && oldValue.equals(newValue)) {
2542 return;
2543 }
2544 Runnable updater = new Runnable() {
2545 public void run() {
2546 PropertyChangeSupport pcs = (PropertyChangeSupport)
2547 AppContext.getAppContext().get(PROP_CHANGE_SUPPORT_KEY);
2548 if (null != pcs) {
2549 pcs.firePropertyChange(evt);
2550 }
2551 }
2552 };
2553 final AppContext currentAppContext = AppContext.getAppContext();
2554 for (AppContext appContext : AppContext.getAppContexts()) {
2555 if (null == appContext || appContext.isDisposed()) {
2556 continue;
2557 }
2558 if (currentAppContext == appContext) {
2559 updater.run();
2560 } else {
2561 final PeerEvent e = new PeerEvent(source, updater, PeerEvent.ULTIMATE_PRIORITY_EVENT);
2562 SunToolkit.postEvent(appContext, e);
2563 }
2564 }
2565 }
2566 }
2567
2568 /**
2569 * Reports whether events from extra mouse buttons are allowed to be processed and posted into
2570 * {@code EventQueue}.
2571 * <br>
2572 * To change the returned value it is necessary to set the {@code sun.awt.enableExtraMouseButtons}
2573 * property before the {@code Toolkit} class initialization. This setting could be done on the application
2574 * startup by the following command:
2575 * <pre>
2576 * java -Dsun.awt.enableExtraMouseButtons=false Application
2577 * </pre>
2578 * Alternatively, the property could be set in the application by using the following code:
2579 * <pre>
2580 * System.setProperty("sun.awt.enableExtraMouseButtons", "true");
2581 * </pre>
2582 * before the {@code Toolkit} class initialization.
2583 * If not set by the time of the {@code Toolkit} class initialization, this property will be
2584 * initialized with {@code true}.
2585 * Changing this value after the {@code Toolkit} class initialization will have no effect.
2586 * <p>
2587 * The current value could be queried by using the
2588 * {@code System.getProperty("sun.awt.enableExtraMouseButtons")} method.
2589 * @exception HeadlessException if GraphicsEnvironment.isHeadless() returns true
2590 * @return {@code true} if events from extra mouse buttons are allowed to be processed and posted;
2591 * {@code false} otherwise
2592 * @see System#getProperty(String propertyName)
2593 * @see System#setProperty(String propertyName, String value)
2594 * @see java.awt.EventQueue
2595 * @since 1.7
2596 */
2597 public boolean areExtraMouseButtonsEnabled() throws HeadlessException {
2598 return Toolkit.getDefaultToolkit().areExtraMouseButtonsEnabled();
2599 }
2600 }