1 /*
2 * Copyright (c) 1995, 2011, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26 package java.awt;
27
28 import java.beans.PropertyChangeEvent;
29 import java.util.MissingResourceException;
30 import java.util.Properties;
31 import java.util.ResourceBundle;
32 import java.util.StringTokenizer;
33 import java.awt.event.*;
34 import java.awt.peer.*;
35 import java.awt.im.InputMethodHighlight;
36 import java.awt.image.ImageObserver;
37 import java.awt.image.ImageProducer;
38 import java.awt.image.ColorModel;
39 import java.awt.datatransfer.Clipboard;
40 import java.awt.dnd.DragSource;
41 import java.awt.dnd.DragGestureRecognizer;
42 import java.awt.dnd.DragGestureEvent;
43 import java.awt.dnd.DragGestureListener;
44 import java.awt.dnd.InvalidDnDOperationException;
45 import java.awt.dnd.peer.DragSourceContextPeer;
46 import java.net.URL;
47 import java.io.File;
48 import java.io.FileInputStream;
49
50 import java.util.*;
51 import java.beans.PropertyChangeListener;
52 import java.beans.PropertyChangeSupport;
53 import sun.awt.AppContext;
54
55 import sun.awt.HeadlessToolkit;
56 import sun.awt.NullComponentPeer;
57 import sun.awt.PeerEvent;
58 import sun.awt.SunToolkit;
59 import sun.security.util.SecurityConstants;
60
61 import sun.util.CoreResourceBundleControl;
62
63 /**
64 * This class is the abstract superclass of all actual
65 * implementations of the Abstract Window Toolkit. Subclasses of
66 * the <code>Toolkit</code> class are used to bind the various components
67 * to particular native toolkit implementations.
68 * <p>
69 * Many GUI events may be delivered to user
70 * asynchronously, if the opposite is not specified explicitly.
71 * As well as
72 * many GUI operations may be performed asynchronously.
73 * This fact means that if the state of a component is set, and then
74 * the state immediately queried, the returned value may not yet
75 * reflect the requested change. This behavior includes, but is not
76 * limited to:
77 * <ul>
78 * <li>Scrolling to a specified position.
79 * <br>For example, calling <code>ScrollPane.setScrollPosition</code>
80 * and then <code>getScrollPosition</code> may return an incorrect
81 * value if the original request has not yet been processed.
82 * <p>
83 * <li>Moving the focus from one component to another.
84 * <br>For more information, see
85 * <a href="http://java.sun.com/docs/books/tutorial/uiswing/misc/focus.html#transferTiming">Timing
86 * Focus Transfers</a>, a section in
87 * <a href="http://java.sun.com/docs/books/tutorial/uiswing/">The Swing
88 * Tutorial</a>.
89 * <p>
90 * <li>Making a top-level container visible.
91 * <br>Calling <code>setVisible(true)</code> on a <code>Window</code>,
92 * <code>Frame</code> or <code>Dialog</code> may occur
93 * asynchronously.
94 * <p>
95 * <li>Setting the size or location of a top-level container.
96 * <br>Calls to <code>setSize</code>, <code>setBounds</code> or
97 * <code>setLocation</code> on a <code>Window</code>,
98 * <code>Frame</code> or <code>Dialog</code> are forwarded
99 * to the underlying window management system and may be
100 * ignored or modified. See {@link java.awt.Window} for
101 * more information.
102 * </ul>
103 * <p>
104 * Most applications should not call any of the methods in this
105 * class directly. The methods defined by <code>Toolkit</code> are
106 * the "glue" that joins the platform-independent classes in the
107 * <code>java.awt</code> package with their counterparts in
108 * <code>java.awt.peer</code>. Some methods defined by
109 * <code>Toolkit</code> query the native operating system directly.
110 *
111 * @author Sami Shaio
112 * @author Arthur van Hoff
113 * @author Fred Ecks
114 * @since JDK1.0
115 */
116 public abstract class Toolkit {
117
118 /**
119 * Creates this toolkit's implementation of the <code>Desktop</code>
120 * using the specified peer interface.
121 * @param target the desktop to be implemented
122 * @return this toolkit's implementation of the <code>Desktop</code>
123 * @exception HeadlessException if GraphicsEnvironment.isHeadless()
124 * returns true
125 * @see java.awt.GraphicsEnvironment#isHeadless
126 * @see java.awt.Desktop
127 * @see java.awt.peer.DesktopPeer
128 * @since 1.6
129 */
130 protected abstract DesktopPeer createDesktopPeer(Desktop target)
131 throws HeadlessException;
132
133
134 /**
135 * Creates this toolkit's implementation of <code>Button</code> using
136 * the specified peer interface.
137 * @param target the button to be implemented.
138 * @return this toolkit's implementation of <code>Button</code>.
139 * @exception HeadlessException if GraphicsEnvironment.isHeadless()
140 * returns true
141 * @see java.awt.GraphicsEnvironment#isHeadless
142 * @see java.awt.Button
143 * @see java.awt.peer.ButtonPeer
144 */
145 protected abstract ButtonPeer createButton(Button target)
146 throws HeadlessException;
147
148 /**
149 * Creates this toolkit's implementation of <code>TextField</code> using
150 * the specified peer interface.
151 * @param target the text field to be implemented.
152 * @return this toolkit's implementation of <code>TextField</code>.
153 * @exception HeadlessException if GraphicsEnvironment.isHeadless()
154 * returns true
155 * @see java.awt.GraphicsEnvironment#isHeadless
156 * @see java.awt.TextField
157 * @see java.awt.peer.TextFieldPeer
158 */
159 protected abstract TextFieldPeer createTextField(TextField target)
160 throws HeadlessException;
161
162 /**
163 * Creates this toolkit's implementation of <code>Label</code> using
164 * the specified peer interface.
165 * @param target the label to be implemented.
166 * @return this toolkit's implementation of <code>Label</code>.
167 * @exception HeadlessException if GraphicsEnvironment.isHeadless()
168 * returns true
169 * @see java.awt.GraphicsEnvironment#isHeadless
170 * @see java.awt.Label
171 * @see java.awt.peer.LabelPeer
172 */
173 protected abstract LabelPeer createLabel(Label target)
174 throws HeadlessException;
175
176 /**
177 * Creates this toolkit's implementation of <code>List</code> using
178 * the specified peer interface.
179 * @param target the list to be implemented.
180 * @return this toolkit's implementation of <code>List</code>.
181 * @exception HeadlessException if GraphicsEnvironment.isHeadless()
182 * returns true
183 * @see java.awt.GraphicsEnvironment#isHeadless
184 * @see java.awt.List
185 * @see java.awt.peer.ListPeer
186 */
187 protected abstract ListPeer createList(java.awt.List target)
188 throws HeadlessException;
189
190 /**
191 * Creates this toolkit's implementation of <code>Checkbox</code> using
192 * the specified peer interface.
193 * @param target the check box to be implemented.
194 * @return this toolkit's implementation of <code>Checkbox</code>.
195 * @exception HeadlessException if GraphicsEnvironment.isHeadless()
196 * returns true
197 * @see java.awt.GraphicsEnvironment#isHeadless
198 * @see java.awt.Checkbox
199 * @see java.awt.peer.CheckboxPeer
200 */
201 protected abstract CheckboxPeer createCheckbox(Checkbox target)
202 throws HeadlessException;
203
204 /**
205 * Creates this toolkit's implementation of <code>Scrollbar</code> using
206 * the specified peer interface.
207 * @param target the scroll bar to be implemented.
208 * @return this toolkit's implementation of <code>Scrollbar</code>.
209 * @exception HeadlessException if GraphicsEnvironment.isHeadless()
210 * returns true
211 * @see java.awt.GraphicsEnvironment#isHeadless
212 * @see java.awt.Scrollbar
213 * @see java.awt.peer.ScrollbarPeer
214 */
215 protected abstract ScrollbarPeer createScrollbar(Scrollbar target)
216 throws HeadlessException;
217
218 /**
219 * Creates this toolkit's implementation of <code>ScrollPane</code> using
220 * the specified peer interface.
221 * @param target the scroll pane to be implemented.
222 * @return this toolkit's implementation of <code>ScrollPane</code>.
223 * @exception HeadlessException if GraphicsEnvironment.isHeadless()
224 * returns true
225 * @see java.awt.GraphicsEnvironment#isHeadless
226 * @see java.awt.ScrollPane
227 * @see java.awt.peer.ScrollPanePeer
228 * @since JDK1.1
229 */
230 protected abstract ScrollPanePeer createScrollPane(ScrollPane target)
231 throws HeadlessException;
232
233 /**
234 * Creates this toolkit's implementation of <code>TextArea</code> using
235 * the specified peer interface.
236 * @param target the text area to be implemented.
237 * @return this toolkit's implementation of <code>TextArea</code>.
238 * @exception HeadlessException if GraphicsEnvironment.isHeadless()
239 * returns true
240 * @see java.awt.GraphicsEnvironment#isHeadless
241 * @see java.awt.TextArea
242 * @see java.awt.peer.TextAreaPeer
243 */
244 protected abstract TextAreaPeer createTextArea(TextArea target)
245 throws HeadlessException;
246
247 /**
248 * Creates this toolkit's implementation of <code>Choice</code> using
249 * the specified peer interface.
250 * @param target the choice to be implemented.
251 * @return this toolkit's implementation of <code>Choice</code>.
252 * @exception HeadlessException if GraphicsEnvironment.isHeadless()
253 * returns true
254 * @see java.awt.GraphicsEnvironment#isHeadless
255 * @see java.awt.Choice
256 * @see java.awt.peer.ChoicePeer
257 */
258 protected abstract ChoicePeer createChoice(Choice target)
259 throws HeadlessException;
260
261 /**
262 * Creates this toolkit's implementation of <code>Frame</code> using
263 * the specified peer interface.
264 * @param target the frame to be implemented.
265 * @return this toolkit's implementation of <code>Frame</code>.
266 * @exception HeadlessException if GraphicsEnvironment.isHeadless()
267 * returns true
268 * @see java.awt.GraphicsEnvironment#isHeadless
269 * @see java.awt.Frame
270 * @see java.awt.peer.FramePeer
271 */
272 protected abstract FramePeer createFrame(Frame target)
273 throws HeadlessException;
274
275 /**
276 * Creates this toolkit's implementation of <code>Canvas</code> using
277 * the specified peer interface.
278 * @param target the canvas to be implemented.
279 * @return this toolkit's implementation of <code>Canvas</code>.
280 * @see java.awt.Canvas
281 * @see java.awt.peer.CanvasPeer
282 */
283 protected abstract CanvasPeer createCanvas(Canvas target);
284
285 /**
286 * Creates this toolkit's implementation of <code>Panel</code> using
287 * the specified peer interface.
288 * @param target the panel to be implemented.
289 * @return this toolkit's implementation of <code>Panel</code>.
290 * @see java.awt.Panel
291 * @see java.awt.peer.PanelPeer
292 */
293 protected abstract PanelPeer createPanel(Panel target);
294
295 /**
296 * Creates this toolkit's implementation of <code>Window</code> using
297 * the specified peer interface.
298 * @param target the window to be implemented.
299 * @return this toolkit's implementation of <code>Window</code>.
300 * @exception HeadlessException if GraphicsEnvironment.isHeadless()
301 * returns true
302 * @see java.awt.GraphicsEnvironment#isHeadless
303 * @see java.awt.Window
304 * @see java.awt.peer.WindowPeer
305 */
306 protected abstract WindowPeer createWindow(Window target)
307 throws HeadlessException;
308
309 /**
310 * Creates this toolkit's implementation of <code>Dialog</code> using
311 * the specified peer interface.
312 * @param target the dialog to be implemented.
313 * @return this toolkit's implementation of <code>Dialog</code>.
314 * @exception HeadlessException if GraphicsEnvironment.isHeadless()
315 * returns true
316 * @see java.awt.GraphicsEnvironment#isHeadless
317 * @see java.awt.Dialog
318 * @see java.awt.peer.DialogPeer
319 */
320 protected abstract DialogPeer createDialog(Dialog target)
321 throws HeadlessException;
322
323 /**
324 * Creates this toolkit's implementation of <code>MenuBar</code> using
325 * the specified peer interface.
326 * @param target the menu bar to be implemented.
327 * @return this toolkit's implementation of <code>MenuBar</code>.
328 * @exception HeadlessException if GraphicsEnvironment.isHeadless()
329 * returns true
330 * @see java.awt.GraphicsEnvironment#isHeadless
331 * @see java.awt.MenuBar
332 * @see java.awt.peer.MenuBarPeer
333 */
334 protected abstract MenuBarPeer createMenuBar(MenuBar target)
335 throws HeadlessException;
336
337 /**
338 * Creates this toolkit's implementation of <code>Menu</code> using
339 * the specified peer interface.
340 * @param target the menu to be implemented.
341 * @return this toolkit's implementation of <code>Menu</code>.
342 * @exception HeadlessException if GraphicsEnvironment.isHeadless()
343 * returns true
344 * @see java.awt.GraphicsEnvironment#isHeadless
345 * @see java.awt.Menu
346 * @see java.awt.peer.MenuPeer
347 */
348 protected abstract MenuPeer createMenu(Menu target)
349 throws HeadlessException;
350
351 /**
352 * Creates this toolkit's implementation of <code>PopupMenu</code> using
353 * the specified peer interface.
354 * @param target the popup menu to be implemented.
355 * @return this toolkit's implementation of <code>PopupMenu</code>.
356 * @exception HeadlessException if GraphicsEnvironment.isHeadless()
357 * returns true
358 * @see java.awt.GraphicsEnvironment#isHeadless
359 * @see java.awt.PopupMenu
360 * @see java.awt.peer.PopupMenuPeer
361 * @since JDK1.1
362 */
363 protected abstract PopupMenuPeer createPopupMenu(PopupMenu target)
364 throws HeadlessException;
365
366 /**
367 * Creates this toolkit's implementation of <code>MenuItem</code> using
368 * the specified peer interface.
369 * @param target the menu item to be implemented.
370 * @return this toolkit's implementation of <code>MenuItem</code>.
371 * @exception HeadlessException if GraphicsEnvironment.isHeadless()
372 * returns true
373 * @see java.awt.GraphicsEnvironment#isHeadless
374 * @see java.awt.MenuItem
375 * @see java.awt.peer.MenuItemPeer
376 */
377 protected abstract MenuItemPeer createMenuItem(MenuItem target)
378 throws HeadlessException;
379
380 /**
381 * Creates this toolkit's implementation of <code>FileDialog</code> using
382 * the specified peer interface.
383 * @param target the file dialog to be implemented.
384 * @return this toolkit's implementation of <code>FileDialog</code>.
385 * @exception HeadlessException if GraphicsEnvironment.isHeadless()
386 * returns true
387 * @see java.awt.GraphicsEnvironment#isHeadless
388 * @see java.awt.FileDialog
389 * @see java.awt.peer.FileDialogPeer
390 */
391 protected abstract FileDialogPeer createFileDialog(FileDialog target)
392 throws HeadlessException;
393
394 /**
395 * Creates this toolkit's implementation of <code>CheckboxMenuItem</code> using
396 * the specified peer interface.
397 * @param target the checkbox menu item to be implemented.
398 * @return this toolkit's implementation of <code>CheckboxMenuItem</code>.
399 * @exception HeadlessException if GraphicsEnvironment.isHeadless()
400 * returns true
401 * @see java.awt.GraphicsEnvironment#isHeadless
402 * @see java.awt.CheckboxMenuItem
403 * @see java.awt.peer.CheckboxMenuItemPeer
404 */
405 protected abstract CheckboxMenuItemPeer createCheckboxMenuItem(
406 CheckboxMenuItem target) throws HeadlessException;
407
408 /**
409 * Obtains this toolkit's implementation of helper class for
410 * <code>MouseInfo</code> operations.
411 * @return this toolkit's implementation of helper for <code>MouseInfo</code>
412 * @throws UnsupportedOperationException if this operation is not implemented
413 * @see java.awt.peer.MouseInfoPeer
414 * @see java.awt.MouseInfo
415 * @since 1.5
416 */
417 protected MouseInfoPeer getMouseInfoPeer() {
418 throw new UnsupportedOperationException("Not implemented");
419 }
420
421 private static LightweightPeer lightweightMarker;
422
423 /**
424 * Creates a peer for a component or container. This peer is windowless
425 * and allows the Component and Container classes to be extended directly
426 * to create windowless components that are defined entirely in java.
427 *
428 * @param target The Component to be created.
429 */
430 protected LightweightPeer createComponent(Component target) {
431 if (lightweightMarker == null) {
432 lightweightMarker = new NullComponentPeer();
433 }
434 return lightweightMarker;
435 }
436
437 /**
438 * Creates this toolkit's implementation of <code>Font</code> using
439 * the specified peer interface.
440 * @param name the font to be implemented
441 * @param style the style of the font, such as <code>PLAIN</code>,
442 * <code>BOLD</code>, <code>ITALIC</code>, or a combination
443 * @return this toolkit's implementation of <code>Font</code>
444 * @see java.awt.Font
445 * @see java.awt.peer.FontPeer
446 * @see java.awt.GraphicsEnvironment#getAllFonts
447 * @deprecated see java.awt.GraphicsEnvironment#getAllFonts
448 */
449 @Deprecated
450 protected abstract FontPeer getFontPeer(String name, int style);
451
452 // The following method is called by the private method
453 // <code>updateSystemColors</code> in <code>SystemColor</code>.
454
455 /**
456 * Fills in the integer array that is supplied as an argument
457 * with the current system color values.
458 *
459 * @param systemColors an integer array.
460 * @exception HeadlessException if GraphicsEnvironment.isHeadless()
461 * returns true
462 * @see java.awt.GraphicsEnvironment#isHeadless
463 * @since JDK1.1
464 */
465 protected void loadSystemColors(int[] systemColors)
466 throws HeadlessException {
467 GraphicsEnvironment.checkHeadless();
468 }
469
470 /**
471 * Controls whether the layout of Containers is validated dynamically
472 * during resizing, or statically, after resizing is complete.
473 * Use {@code isDynamicLayoutActive()} to detect if this feature enabled
474 * in this program and is supported by this operating system
475 * and/or window manager.
476 * Note that this feature is supported not on all platforms, and
477 * conversely, that this feature cannot be turned off on some platforms.
478 * On these platforms where dynamic layout during resizing is not supported
479 * (or is always supported), setting this property has no effect.
480 * Note that this feature can be set or unset as a property of the
481 * operating system or window manager on some platforms. On such
482 * platforms, the dynamic resize property must be set at the operating
483 * system or window manager level before this method can take effect.
484 * This method does not change support or settings of the underlying
485 * operating system or
486 * window manager. The OS/WM support can be
487 * queried using getDesktopProperty("awt.dynamicLayoutSupported") method.
488 *
489 * @param dynamic If true, Containers should re-layout their
490 * components as the Container is being resized. If false,
491 * the layout will be validated after resizing is completed.
492 * @exception HeadlessException if GraphicsEnvironment.isHeadless()
493 * returns true
494 * @see #isDynamicLayoutSet()
495 * @see #isDynamicLayoutActive()
496 * @see #getDesktopProperty(String propertyName)
497 * @see java.awt.GraphicsEnvironment#isHeadless
498 * @since 1.4
499 */
500 public void setDynamicLayout(boolean dynamic)
501 throws HeadlessException {
502 GraphicsEnvironment.checkHeadless();
503 }
504
505 /**
506 * Returns whether the layout of Containers is validated dynamically
507 * during resizing, or statically, after resizing is complete.
508 * Note: this method returns the value that was set programmatically;
509 * it does not reflect support at the level of the operating system
510 * or window manager for dynamic layout on resizing, or the current
511 * operating system or window manager settings. The OS/WM support can
512 * be queried using getDesktopProperty("awt.dynamicLayoutSupported").
513 *
514 * @return true if validation of Containers is done dynamically,
515 * false if validation is done after resizing is finished.
516 * @exception HeadlessException if GraphicsEnvironment.isHeadless()
517 * returns true
518 * @see #setDynamicLayout(boolean dynamic)
519 * @see #isDynamicLayoutActive()
520 * @see #getDesktopProperty(String propertyName)
521 * @see java.awt.GraphicsEnvironment#isHeadless
522 * @since 1.4
523 */
524 protected boolean isDynamicLayoutSet()
525 throws HeadlessException {
526 GraphicsEnvironment.checkHeadless();
527
528 if (this != Toolkit.getDefaultToolkit()) {
529 return Toolkit.getDefaultToolkit().isDynamicLayoutSet();
530 } else {
531 return false;
532 }
533 }
534
535 /**
536 * Returns whether dynamic layout of Containers on resize is
537 * currently active (both set in program
538 *( {@code isDynamicLayoutSet()} )
539 *, and supported
540 * by the underlying operating system and/or window manager).
541 * If dynamic layout is currently inactive then Containers
542 * re-layout their components when resizing is completed. As a result
543 * the {@code Component.validate()} method will be invoked only
544 * once per resize.
545 * If dynamic layout is currently active then Containers
546 * re-layout their components on every native resize event and
547 * the {@code validate()} method will be invoked each time.
548 * The OS/WM support can be queried using
549 * the getDesktopProperty("awt.dynamicLayoutSupported") method.
550 *
551 * @return true if dynamic layout of Containers on resize is
552 * currently active, false otherwise.
553 * @exception HeadlessException if the GraphicsEnvironment.isHeadless()
554 * method returns true
555 * @see #setDynamicLayout(boolean dynamic)
556 * @see #isDynamicLayoutSet()
557 * @see #getDesktopProperty(String propertyName)
558 * @see java.awt.GraphicsEnvironment#isHeadless
559 * @since 1.4
560 */
561 public boolean isDynamicLayoutActive()
562 throws HeadlessException {
563 GraphicsEnvironment.checkHeadless();
564
565 if (this != Toolkit.getDefaultToolkit()) {
566 return Toolkit.getDefaultToolkit().isDynamicLayoutActive();
567 } else {
568 return false;
569 }
570 }
571
572 /**
573 * Gets the size of the screen. On systems with multiple displays, the
574 * primary display is used. Multi-screen aware display dimensions are
575 * available from <code>GraphicsConfiguration</code> and
576 * <code>GraphicsDevice</code>.
577 * @return the size of this toolkit's screen, in pixels.
578 * @exception HeadlessException if GraphicsEnvironment.isHeadless()
579 * returns true
580 * @see java.awt.GraphicsConfiguration#getBounds
581 * @see java.awt.GraphicsDevice#getDisplayMode
582 * @see java.awt.GraphicsEnvironment#isHeadless
583 */
584 public abstract Dimension getScreenSize()
585 throws HeadlessException;
586
587 /**
588 * Returns the screen resolution in dots-per-inch.
589 * @return this toolkit's screen resolution, in dots-per-inch.
590 * @exception HeadlessException if GraphicsEnvironment.isHeadless()
591 * returns true
592 * @see java.awt.GraphicsEnvironment#isHeadless
593 */
594 public abstract int getScreenResolution()
595 throws HeadlessException;
596
597 /**
598 * Gets the insets of the screen.
599 * @param gc a <code>GraphicsConfiguration</code>
600 * @return the insets of this toolkit's screen, in pixels.
601 * @exception HeadlessException if GraphicsEnvironment.isHeadless()
602 * returns true
603 * @see java.awt.GraphicsEnvironment#isHeadless
604 * @since 1.4
605 */
606 public Insets getScreenInsets(GraphicsConfiguration gc)
607 throws HeadlessException {
608 GraphicsEnvironment.checkHeadless();
609 if (this != Toolkit.getDefaultToolkit()) {
610 return Toolkit.getDefaultToolkit().getScreenInsets(gc);
611 } else {
612 return new Insets(0, 0, 0, 0);
613 }
614 }
615
616 /**
617 * Determines the color model of this toolkit's screen.
618 * <p>
619 * <code>ColorModel</code> is an abstract class that
620 * encapsulates the ability to translate between the
621 * pixel values of an image and its red, green, blue,
622 * and alpha components.
623 * <p>
624 * This toolkit method is called by the
625 * <code>getColorModel</code> method
626 * of the <code>Component</code> class.
627 * @return the color model of this toolkit's screen.
628 * @exception HeadlessException if GraphicsEnvironment.isHeadless()
629 * returns true
630 * @see java.awt.GraphicsEnvironment#isHeadless
631 * @see java.awt.image.ColorModel
632 * @see java.awt.Component#getColorModel
633 */
634 public abstract ColorModel getColorModel()
635 throws HeadlessException;
636
637 /**
638 * Returns the names of the available fonts in this toolkit.<p>
639 * For 1.1, the following font names are deprecated (the replacement
640 * name follows):
641 * <ul>
642 * <li>TimesRoman (use Serif)
643 * <li>Helvetica (use SansSerif)
644 * <li>Courier (use Monospaced)
645 * </ul><p>
646 * The ZapfDingbats fontname is also deprecated in 1.1 but the characters
647 * are defined in Unicode starting at 0x2700, and as of 1.1 Java supports
648 * those characters.
649 * @return the names of the available fonts in this toolkit.
650 * @deprecated see {@link java.awt.GraphicsEnvironment#getAvailableFontFamilyNames()}
651 * @see java.awt.GraphicsEnvironment#getAvailableFontFamilyNames()
652 */
653 @Deprecated
654 public abstract String[] getFontList();
655
656 /**
657 * Gets the screen device metrics for rendering of the font.
658 * @param font a font
659 * @return the screen metrics of the specified font in this toolkit
660 * @deprecated As of JDK version 1.2, replaced by the <code>Font</code>
661 * method <code>getLineMetrics</code>.
662 * @see java.awt.font.LineMetrics
663 * @see java.awt.Font#getLineMetrics
664 * @see java.awt.GraphicsEnvironment#getScreenDevices
665 */
666 @Deprecated
667 public abstract FontMetrics getFontMetrics(Font font);
668
669 /**
670 * Synchronizes this toolkit's graphics state. Some window systems
671 * may do buffering of graphics events.
672 * <p>
673 * This method ensures that the display is up-to-date. It is useful
674 * for animation.
675 */
676 public abstract void sync();
677
678 /**
679 * The default toolkit.
680 */
681 private static Toolkit toolkit;
682
683 /**
684 * Used internally by the assistive technologies functions; set at
685 * init time and used at load time
686 */
687 private static String atNames;
688
689 /**
690 * Initializes properties related to assistive technologies.
691 * These properties are used both in the loadAssistiveProperties()
692 * function below, as well as other classes in the jdk that depend
693 * on the properties (such as the use of the screen_magnifier_present
694 * property in Java2D hardware acceleration initialization). The
695 * initialization of the properties must be done before the platform-
696 * specific Toolkit class is instantiated so that all necessary
697 * properties are set up properly before any classes dependent upon them
698 * are initialized.
699 */
700 private static void initAssistiveTechnologies() {
701
702 // Get accessibility properties
703 final String sep = File.separator;
704 final Properties properties = new Properties();
705
706
707 atNames = java.security.AccessController.doPrivileged(
708 new java.security.PrivilegedAction<String>() {
709 public String run() {
710
711 // Try loading the per-user accessibility properties file.
712 try {
713 File propsFile = new File(
714 System.getProperty("user.home") +
715 sep + ".accessibility.properties");
716 FileInputStream in =
717 new FileInputStream(propsFile);
718
719 // Inputstream has been buffered in Properties class
720 properties.load(in);
721 in.close();
722 } catch (Exception e) {
723 // Per-user accessibility properties file does not exist
724 }
725
726 // Try loading the system-wide accessibility properties
727 // file only if a per-user accessibility properties
728 // file does not exist or is empty.
729 if (properties.size() == 0) {
730 try {
731 File propsFile = new File(
732 System.getProperty("java.home") + sep + "lib" +
733 sep + "accessibility.properties");
734 FileInputStream in =
735 new FileInputStream(propsFile);
736
737 // Inputstream has been buffered in Properties class
738 properties.load(in);
739 in.close();
740 } catch (Exception e) {
741 // System-wide accessibility properties file does
742 // not exist;
743 }
744 }
745
746 // Get whether a screen magnifier is present. First check
747 // the system property and then check the properties file.
748 String magPresent = System.getProperty("javax.accessibility.screen_magnifier_present");
749 if (magPresent == null) {
750 magPresent = properties.getProperty("screen_magnifier_present", null);
751 if (magPresent != null) {
752 System.setProperty("javax.accessibility.screen_magnifier_present", magPresent);
753 }
754 }
755
756 // Get the names of any assistive technolgies to load. First
757 // check the system property and then check the properties
758 // file.
759 String classNames = System.getProperty("javax.accessibility.assistive_technologies");
760 if (classNames == null) {
761 classNames = properties.getProperty("assistive_technologies", null);
762 if (classNames != null) {
763 System.setProperty("javax.accessibility.assistive_technologies", classNames);
764 }
765 }
766 return classNames;
767 }
768 });
769 }
770
771 /**
772 * Loads additional classes into the VM, using the property
773 * 'assistive_technologies' specified in the Sun reference
774 * implementation by a line in the 'accessibility.properties'
775 * file. The form is "assistive_technologies=..." where
776 * the "..." is a comma-separated list of assistive technology
777 * classes to load. Each class is loaded in the order given
778 * and a single instance of each is created using
779 * Class.forName(class).newInstance(). All errors are handled
780 * via an AWTError exception.
781 *
782 * <p>The assumption is made that assistive technology classes are supplied
783 * as part of INSTALLED (as opposed to: BUNDLED) extensions or specified
784 * on the class path
785 * (and therefore can be loaded using the class loader returned by
786 * a call to <code>ClassLoader.getSystemClassLoader</code>, whose
787 * delegation parent is the extension class loader for installed
788 * extensions).
789 */
790 private static void loadAssistiveTechnologies() {
791 // Load any assistive technologies
792 if (atNames != null) {
793 ClassLoader cl = ClassLoader.getSystemClassLoader();
794 StringTokenizer parser = new StringTokenizer(atNames," ,");
795 String atName;
796 while (parser.hasMoreTokens()) {
797 atName = parser.nextToken();
798 try {
799 Class<?> clazz;
800 if (cl != null) {
801 clazz = cl.loadClass(atName);
802 } else {
803 clazz = Class.forName(atName);
804 }
805 clazz.newInstance();
806 } catch (ClassNotFoundException e) {
807 throw new AWTError("Assistive Technology not found: "
808 + atName);
809 } catch (InstantiationException e) {
810 throw new AWTError("Could not instantiate Assistive"
811 + " Technology: " + atName);
812 } catch (IllegalAccessException e) {
813 throw new AWTError("Could not access Assistive"
814 + " Technology: " + atName);
815 } catch (Exception e) {
816 throw new AWTError("Error trying to install Assistive"
817 + " Technology: " + atName + " " + e);
818 }
819 }
820 }
821 }
822
823 /**
824 * Gets the default toolkit.
825 * <p>
826 * If a system property named <code>"java.awt.headless"</code> is set
827 * to <code>true</code> then the headless implementation
828 * of <code>Toolkit</code> is used.
829 * <p>
830 * If there is no <code>"java.awt.headless"</code> or it is set to
831 * <code>false</code> and there is a system property named
832 * <code>"awt.toolkit"</code>,
833 * that property is treated as the name of a class that is a subclass
834 * of <code>Toolkit</code>;
835 * otherwise the default platform-specific implementation of
836 * <code>Toolkit</code> is used.
837 * <p>
838 * Also loads additional classes into the VM, using the property
839 * 'assistive_technologies' specified in the Sun reference
840 * implementation by a line in the 'accessibility.properties'
841 * file. The form is "assistive_technologies=..." where
842 * the "..." is a comma-separated list of assistive technology
843 * classes to load. Each class is loaded in the order given
844 * and a single instance of each is created using
845 * Class.forName(class).newInstance(). This is done just after
846 * the AWT toolkit is created. All errors are handled via an
847 * AWTError exception.
848 * @return the default toolkit.
849 * @exception AWTError if a toolkit could not be found, or
850 * if one could not be accessed or instantiated.
851 */
852 public static synchronized Toolkit getDefaultToolkit() {
853 if (toolkit == null) {
854 try {
855 // We disable the JIT during toolkit initialization. This
856 // tends to touch lots of classes that aren't needed again
857 // later and therefore JITing is counter-productiive.
858 java.lang.Compiler.disable();
859
860 java.security.AccessController.doPrivileged(
861 new java.security.PrivilegedAction<Void>() {
862 public Void run() {
863 String nm = null;
864 Class<?> cls = null;
865 try {
866 nm = System.getProperty("awt.toolkit");
867 try {
868 cls = Class.forName(nm);
869 } catch (ClassNotFoundException e) {
870 ClassLoader cl = ClassLoader.getSystemClassLoader();
871 if (cl != null) {
872 try {
873 cls = cl.loadClass(nm);
874 } catch (ClassNotFoundException ee) {
875 throw new AWTError("Toolkit not found: " + nm);
876 }
877 }
878 }
879 if (cls != null) {
880 toolkit = (Toolkit)cls.newInstance();
881 if (GraphicsEnvironment.isHeadless()) {
882 toolkit = new HeadlessToolkit(toolkit);
883 }
884 }
885 } catch (InstantiationException e) {
886 throw new AWTError("Could not instantiate Toolkit: " + nm);
887 } catch (IllegalAccessException e) {
888 throw new AWTError("Could not access Toolkit: " + nm);
889 }
890 return null;
891 }
892 });
893 loadAssistiveTechnologies();
894 } finally {
895 // Make sure to always re-enable the JIT.
896 java.lang.Compiler.enable();
897 }
898 }
899 return toolkit;
900 }
901
902 /**
903 * Returns an image which gets pixel data from the specified file,
904 * whose format can be either GIF, JPEG or PNG.
905 * The underlying toolkit attempts to resolve multiple requests
906 * with the same filename to the same returned Image.
907 * <p>
908 * Since the mechanism required to facilitate this sharing of
909 * <code>Image</code> objects may continue to hold onto images
910 * that are no longer in use for an indefinite period of time,
911 * developers are encouraged to implement their own caching of
912 * images by using the {@link #createImage(java.lang.String) createImage}
913 * variant wherever available.
914 * If the image data contained in the specified file changes,
915 * the <code>Image</code> object returned from this method may
916 * still contain stale information which was loaded from the
917 * file after a prior call.
918 * Previously loaded image data can be manually discarded by
919 * calling the {@link Image#flush flush} method on the
920 * returned <code>Image</code>.
921 * <p>
922 * This method first checks if there is a security manager installed.
923 * If so, the method calls the security manager's
924 * <code>checkRead</code> method with the file specified to ensure
925 * that the access to the image is allowed.
926 * @param filename the name of a file containing pixel data
927 * in a recognized file format.
928 * @return an image which gets its pixel data from
929 * the specified file.
930 * @throws SecurityException if a security manager exists and its
931 * checkRead method doesn't allow the operation.
932 * @see #createImage(java.lang.String)
933 */
934 public abstract Image getImage(String filename);
935
936 /**
937 * Returns an image which gets pixel data from the specified URL.
938 * The pixel data referenced by the specified URL must be in one
939 * of the following formats: GIF, JPEG or PNG.
940 * The underlying toolkit attempts to resolve multiple requests
941 * with the same URL to the same returned Image.
942 * <p>
943 * Since the mechanism required to facilitate this sharing of
944 * <code>Image</code> objects may continue to hold onto images
945 * that are no longer in use for an indefinite period of time,
946 * developers are encouraged to implement their own caching of
947 * images by using the {@link #createImage(java.net.URL) createImage}
948 * variant wherever available.
949 * If the image data stored at the specified URL changes,
950 * the <code>Image</code> object returned from this method may
951 * still contain stale information which was fetched from the
952 * URL after a prior call.
953 * Previously loaded image data can be manually discarded by
954 * calling the {@link Image#flush flush} method on the
955 * returned <code>Image</code>.
956 * <p>
957 * This method first checks if there is a security manager installed.
958 * If so, the method calls the security manager's
959 * <code>checkPermission</code> method with the
960 * url.openConnection().getPermission() permission to ensure
961 * that the access to the image is allowed. For compatibility
962 * with pre-1.2 security managers, if the access is denied with
963 * <code>FilePermission</code> or <code>SocketPermission</code>,
964 * the method throws the <code>SecurityException</code>
965 * if the corresponding 1.1-style SecurityManager.checkXXX method
966 * also denies permission.
967 * @param url the URL to use in fetching the pixel data.
968 * @return an image which gets its pixel data from
969 * the specified URL.
970 * @throws SecurityException if a security manager exists and its
971 * checkPermission method doesn't allow
972 * the operation.
973 * @see #createImage(java.net.URL)
974 */
975 public abstract Image getImage(URL url);
976
977 /**
978 * Returns an image which gets pixel data from the specified file.
979 * The returned Image is a new object which will not be shared
980 * with any other caller of this method or its getImage variant.
981 * <p>
982 * This method first checks if there is a security manager installed.
983 * If so, the method calls the security manager's
984 * <code>checkRead</code> method with the specified file to ensure
985 * that the image creation is allowed.
986 * @param filename the name of a file containing pixel data
987 * in a recognized file format.
988 * @return an image which gets its pixel data from
989 * the specified file.
990 * @throws SecurityException if a security manager exists and its
991 * checkRead method doesn't allow the operation.
992 * @see #getImage(java.lang.String)
993 */
994 public abstract Image createImage(String filename);
995
996 /**
997 * Returns an image which gets pixel data from the specified URL.
998 * The returned Image is a new object which will not be shared
999 * with any other caller of this method or its getImage variant.
1000 * <p>
1001 * This method first checks if there is a security manager installed.
1002 * If so, the method calls the security manager's
1003 * <code>checkPermission</code> method with the
1004 * url.openConnection().getPermission() permission to ensure
1005 * that the image creation is allowed. For compatibility
1006 * with pre-1.2 security managers, if the access is denied with
1007 * <code>FilePermission</code> or <code>SocketPermission</code>,
1008 * the method throws <code>SecurityException</code>
1009 * if the corresponding 1.1-style SecurityManager.checkXXX method
1010 * also denies permission.
1011 * @param url the URL to use in fetching the pixel data.
1012 * @return an image which gets its pixel data from
1013 * the specified URL.
1014 * @throws SecurityException if a security manager exists and its
1015 * checkPermission method doesn't allow
1016 * the operation.
1017 * @see #getImage(java.net.URL)
1018 */
1019 public abstract Image createImage(URL url);
1020
1021 /**
1022 * Prepares an image for rendering.
1023 * <p>
1024 * If the values of the width and height arguments are both
1025 * <code>-1</code>, this method prepares the image for rendering
1026 * on the default screen; otherwise, this method prepares an image
1027 * for rendering on the default screen at the specified width and height.
1028 * <p>
1029 * The image data is downloaded asynchronously in another thread,
1030 * and an appropriately scaled screen representation of the image is
1031 * generated.
1032 * <p>
1033 * This method is called by components <code>prepareImage</code>
1034 * methods.
1035 * <p>
1036 * Information on the flags returned by this method can be found
1037 * with the definition of the <code>ImageObserver</code> interface.
1038
1039 * @param image the image for which to prepare a
1040 * screen representation.
1041 * @param width the width of the desired screen
1042 * representation, or <code>-1</code>.
1043 * @param height the height of the desired screen
1044 * representation, or <code>-1</code>.
1045 * @param observer the <code>ImageObserver</code>
1046 * object to be notified as the
1047 * image is being prepared.
1048 * @return <code>true</code> if the image has already been
1049 * fully prepared; <code>false</code> otherwise.
1050 * @see java.awt.Component#prepareImage(java.awt.Image,
1051 * java.awt.image.ImageObserver)
1052 * @see java.awt.Component#prepareImage(java.awt.Image,
1053 * int, int, java.awt.image.ImageObserver)
1054 * @see java.awt.image.ImageObserver
1055 */
1056 public abstract boolean prepareImage(Image image, int width, int height,
1057 ImageObserver observer);
1058
1059 /**
1060 * Indicates the construction status of a specified image that is
1061 * being prepared for display.
1062 * <p>
1063 * If the values of the width and height arguments are both
1064 * <code>-1</code>, this method returns the construction status of
1065 * a screen representation of the specified image in this toolkit.
1066 * Otherwise, this method returns the construction status of a
1067 * scaled representation of the image at the specified width
1068 * and height.
1069 * <p>
1070 * This method does not cause the image to begin loading.
1071 * An application must call <code>prepareImage</code> to force
1072 * the loading of an image.
1073 * <p>
1074 * This method is called by the component's <code>checkImage</code>
1075 * methods.
1076 * <p>
1077 * Information on the flags returned by this method can be found
1078 * with the definition of the <code>ImageObserver</code> interface.
1079 * @param image the image whose status is being checked.
1080 * @param width the width of the scaled version whose status is
1081 * being checked, or <code>-1</code>.
1082 * @param height the height of the scaled version whose status
1083 * is being checked, or <code>-1</code>.
1084 * @param observer the <code>ImageObserver</code> object to be
1085 * notified as the image is being prepared.
1086 * @return the bitwise inclusive <strong>OR</strong> of the
1087 * <code>ImageObserver</code> flags for the
1088 * image data that is currently available.
1089 * @see java.awt.Toolkit#prepareImage(java.awt.Image,
1090 * int, int, java.awt.image.ImageObserver)
1091 * @see java.awt.Component#checkImage(java.awt.Image,
1092 * java.awt.image.ImageObserver)
1093 * @see java.awt.Component#checkImage(java.awt.Image,
1094 * int, int, java.awt.image.ImageObserver)
1095 * @see java.awt.image.ImageObserver
1096 */
1097 public abstract int checkImage(Image image, int width, int height,
1098 ImageObserver observer);
1099
1100 /**
1101 * Creates an image with the specified image producer.
1102 * @param producer the image producer to be used.
1103 * @return an image with the specified image producer.
1104 * @see java.awt.Image
1105 * @see java.awt.image.ImageProducer
1106 * @see java.awt.Component#createImage(java.awt.image.ImageProducer)
1107 */
1108 public abstract Image createImage(ImageProducer producer);
1109
1110 /**
1111 * Creates an image which decodes the image stored in the specified
1112 * byte array.
1113 * <p>
1114 * The data must be in some image format, such as GIF or JPEG,
1115 * that is supported by this toolkit.
1116 * @param imagedata an array of bytes, representing
1117 * image data in a supported image format.
1118 * @return an image.
1119 * @since JDK1.1
1120 */
1121 public Image createImage(byte[] imagedata) {
1122 return createImage(imagedata, 0, imagedata.length);
1123 }
1124
1125 /**
1126 * Creates an image which decodes the image stored in the specified
1127 * byte array, and at the specified offset and length.
1128 * The data must be in some image format, such as GIF or JPEG,
1129 * that is supported by this toolkit.
1130 * @param imagedata an array of bytes, representing
1131 * image data in a supported image format.
1132 * @param imageoffset the offset of the beginning
1133 * of the data in the array.
1134 * @param imagelength the length of the data in the array.
1135 * @return an image.
1136 * @since JDK1.1
1137 */
1138 public abstract Image createImage(byte[] imagedata,
1139 int imageoffset,
1140 int imagelength);
1141
1142 /**
1143 * Gets a <code>PrintJob</code> object which is the result of initiating
1144 * a print operation on the toolkit's platform.
1145 * <p>
1146 * Each actual implementation of this method should first check if there
1147 * is a security manager installed. If there is, the method should call
1148 * the security manager's <code>checkPrintJobAccess</code> method to
1149 * ensure initiation of a print operation is allowed. If the default
1150 * implementation of <code>checkPrintJobAccess</code> is used (that is,
1151 * that method is not overriden), then this results in a call to the
1152 * security manager's <code>checkPermission</code> method with a <code>
1153 * RuntimePermission("queuePrintJob")</code> permission.
1154 *
1155 * @param frame the parent of the print dialog. May not be null.
1156 * @param jobtitle the title of the PrintJob. A null title is equivalent
1157 * to "".
1158 * @param props a Properties object containing zero or more properties.
1159 * Properties are not standardized and are not consistent across
1160 * implementations. Because of this, PrintJobs which require job
1161 * and page control should use the version of this function which
1162 * takes JobAttributes and PageAttributes objects. This object
1163 * may be updated to reflect the user's job choices on exit. May
1164 * be null.
1165 * @return a <code>PrintJob</code> object, or <code>null</code> if the
1166 * user cancelled the print job.
1167 * @throws NullPointerException if frame is null
1168 * @throws SecurityException if this thread is not allowed to initiate a
1169 * print job request
1170 * @see java.awt.GraphicsEnvironment#isHeadless
1171 * @see java.awt.PrintJob
1172 * @see java.lang.RuntimePermission
1173 * @since JDK1.1
1174 */
1175 public abstract PrintJob getPrintJob(Frame frame, String jobtitle,
1176 Properties props);
1177
1178 /**
1179 * Gets a <code>PrintJob</code> object which is the result of initiating
1180 * a print operation on the toolkit's platform.
1181 * <p>
1182 * Each actual implementation of this method should first check if there
1183 * is a security manager installed. If there is, the method should call
1184 * the security manager's <code>checkPrintJobAccess</code> method to
1185 * ensure initiation of a print operation is allowed. If the default
1186 * implementation of <code>checkPrintJobAccess</code> is used (that is,
1187 * that method is not overriden), then this results in a call to the
1188 * security manager's <code>checkPermission</code> method with a <code>
1189 * RuntimePermission("queuePrintJob")</code> permission.
1190 *
1191 * @param frame the parent of the print dialog. May not be null.
1192 * @param jobtitle the title of the PrintJob. A null title is equivalent
1193 * to "".
1194 * @param jobAttributes a set of job attributes which will control the
1195 * PrintJob. The attributes will be updated to reflect the user's
1196 * choices as outlined in the JobAttributes documentation. May be
1197 * null.
1198 * @param pageAttributes a set of page attributes which will control the
1199 * PrintJob. The attributes will be applied to every page in the
1200 * job. The attributes will be updated to reflect the user's
1201 * choices as outlined in the PageAttributes documentation. May be
1202 * null.
1203 * @return a <code>PrintJob</code> object, or <code>null</code> if the
1204 * user cancelled the print job.
1205 * @throws NullPointerException if frame is null
1206 * @throws IllegalArgumentException if pageAttributes specifies differing
1207 * cross feed and feed resolutions. Also if this thread has
1208 * access to the file system and jobAttributes specifies
1209 * print to file, and the specified destination file exists but
1210 * is a directory rather than a regular file, does not exist but
1211 * cannot be created, or cannot be opened for any other reason.
1212 * However in the case of print to file, if a dialog is also
1213 * requested to be displayed then the user will be given an
1214 * opportunity to select a file and proceed with printing.
1215 * The dialog will ensure that the selected output file
1216 * is valid before returning from this method.
1217 * @throws SecurityException if this thread is not allowed to initiate a
1218 * print job request, or if jobAttributes specifies print to file,
1219 * and this thread is not allowed to access the file system
1220 * @see java.awt.PrintJob
1221 * @see java.awt.GraphicsEnvironment#isHeadless
1222 * @see java.lang.RuntimePermission
1223 * @see java.awt.JobAttributes
1224 * @see java.awt.PageAttributes
1225 * @since 1.3
1226 */
1227 public PrintJob getPrintJob(Frame frame, String jobtitle,
1228 JobAttributes jobAttributes,
1229 PageAttributes pageAttributes) {
1230 // Override to add printing support with new job/page control classes
1231
1232 if (this != Toolkit.getDefaultToolkit()) {
1233 return Toolkit.getDefaultToolkit().getPrintJob(frame, jobtitle,
1234 jobAttributes,
1235 pageAttributes);
1236 } else {
1237 return getPrintJob(frame, jobtitle, null);
1238 }
1239 }
1240
1241 /**
1242 * Emits an audio beep using the corresponding system function:
1243 * <ul>
1244 * <li>on Windows it's <code>MessageBeep(MB_OK)</code></li>
1245 * <li>on Mac OS X - <code>NSBeep()</code></li>
1246 * <li>on Solaris and Linux - <code>XBell()</code></li>
1247 * </ul>
1248 * Thus, emitting depends on system settings and hardware capabilities.
1249 * @since JDK1.1
1250 */
1251 public abstract void beep();
1252
1253 /**
1254 * Gets the singleton instance of the system Clipboard which interfaces
1255 * with clipboard facilities provided by the native platform. This
1256 * clipboard enables data transfer between Java programs and native
1257 * applications which use native clipboard facilities.
1258 * <p>
1259 * In addition to any and all formats specified in the flavormap.properties
1260 * file, or other file specified by the <code>AWT.DnD.flavorMapFileURL
1261 * </code> Toolkit property, text returned by the system Clipboard's <code>
1262 * getTransferData()</code> method is available in the following flavors:
1263 * <ul>
1264 * <li>DataFlavor.stringFlavor</li>
1265 * <li>DataFlavor.plainTextFlavor (<b>deprecated</b>)</li>
1266 * </ul>
1267 * As with <code>java.awt.datatransfer.StringSelection</code>, if the
1268 * requested flavor is <code>DataFlavor.plainTextFlavor</code>, or an
1269 * equivalent flavor, a Reader is returned. <b>Note:</b> The behavior of
1270 * the system Clipboard's <code>getTransferData()</code> method for <code>
1271 * DataFlavor.plainTextFlavor</code>, and equivalent DataFlavors, is
1272 * inconsistent with the definition of <code>DataFlavor.plainTextFlavor
1273 * </code>. Because of this, support for <code>
1274 * DataFlavor.plainTextFlavor</code>, and equivalent flavors, is
1275 * <b>deprecated</b>.
1276 * <p>
1277 * Each actual implementation of this method should first check if there
1278 * is a security manager installed. If there is, the method should call
1279 * the security manager's <code>checkSystemClipboardAccess</code> method
1280 * to ensure it's ok to to access the system clipboard. If the default
1281 * implementation of <code>checkSystemClipboardAccess</code> is used (that
1282 * is, that method is not overriden), then this results in a call to the
1283 * security manager's <code>checkPermission</code> method with an <code>
1284 * AWTPermission("accessClipboard")</code> permission.
1285 *
1286 * @return the system Clipboard
1287 * @exception HeadlessException if GraphicsEnvironment.isHeadless()
1288 * returns true
1289 * @see java.awt.GraphicsEnvironment#isHeadless
1290 * @see java.awt.datatransfer.Clipboard
1291 * @see java.awt.datatransfer.StringSelection
1292 * @see java.awt.datatransfer.DataFlavor#stringFlavor
1293 * @see java.awt.datatransfer.DataFlavor#plainTextFlavor
1294 * @see java.io.Reader
1295 * @see java.awt.AWTPermission
1296 * @since JDK1.1
1297 */
1298 public abstract Clipboard getSystemClipboard()
1299 throws HeadlessException;
1300
1301 /**
1302 * Gets the singleton instance of the system selection as a
1303 * <code>Clipboard</code> object. This allows an application to read and
1304 * modify the current, system-wide selection.
1305 * <p>
1306 * An application is responsible for updating the system selection whenever
1307 * the user selects text, using either the mouse or the keyboard.
1308 * Typically, this is implemented by installing a
1309 * <code>FocusListener</code> on all <code>Component</code>s which support
1310 * text selection, and, between <code>FOCUS_GAINED</code> and
1311 * <code>FOCUS_LOST</code> events delivered to that <code>Component</code>,
1312 * updating the system selection <code>Clipboard</code> when the selection
1313 * changes inside the <code>Component</code>. Properly updating the system
1314 * selection ensures that a Java application will interact correctly with
1315 * native applications and other Java applications running simultaneously
1316 * on the system. Note that <code>java.awt.TextComponent</code> and
1317 * <code>javax.swing.text.JTextComponent</code> already adhere to this
1318 * policy. When using these classes, and their subclasses, developers need
1319 * not write any additional code.
1320 * <p>
1321 * Some platforms do not support a system selection <code>Clipboard</code>.
1322 * On those platforms, this method will return <code>null</code>. In such a
1323 * case, an application is absolved from its responsibility to update the
1324 * system selection <code>Clipboard</code> as described above.
1325 * <p>
1326 * Each actual implementation of this method should first check if there
1327 * is a <code>SecurityManager</code> installed. If there is, the method
1328 * should call the <code>SecurityManager</code>'s
1329 * <code>checkSystemClipboardAccess</code> method to ensure that client
1330 * code has access the system selection. If the default implementation of
1331 * <code>checkSystemClipboardAccess</code> is used (that is, if the method
1332 * is not overridden), then this results in a call to the
1333 * <code>SecurityManager</code>'s <code>checkPermission</code> method with
1334 * an <code>AWTPermission("accessClipboard")</code> permission.
1335 *
1336 * @return the system selection as a <code>Clipboard</code>, or
1337 * <code>null</code> if the native platform does not support a
1338 * system selection <code>Clipboard</code>
1339 * @exception HeadlessException if GraphicsEnvironment.isHeadless()
1340 * returns true
1341 *
1342 * @see java.awt.datatransfer.Clipboard
1343 * @see java.awt.event.FocusListener
1344 * @see java.awt.event.FocusEvent#FOCUS_GAINED
1345 * @see java.awt.event.FocusEvent#FOCUS_LOST
1346 * @see TextComponent
1347 * @see javax.swing.text.JTextComponent
1348 * @see AWTPermission
1349 * @see GraphicsEnvironment#isHeadless
1350 * @since 1.4
1351 */
1352 public Clipboard getSystemSelection() throws HeadlessException {
1353 GraphicsEnvironment.checkHeadless();
1354
1355 if (this != Toolkit.getDefaultToolkit()) {
1356 return Toolkit.getDefaultToolkit().getSystemSelection();
1357 } else {
1358 GraphicsEnvironment.checkHeadless();
1359 return null;
1360 }
1361 }
1362
1363 /**
1364 * Determines which modifier key is the appropriate accelerator
1365 * key for menu shortcuts.
1366 * <p>
1367 * Menu shortcuts, which are embodied in the
1368 * <code>MenuShortcut</code> class, are handled by the
1369 * <code>MenuBar</code> class.
1370 * <p>
1371 * By default, this method returns <code>Event.CTRL_MASK</code>.
1372 * Toolkit implementations should override this method if the
1373 * <b>Control</b> key isn't the correct key for accelerators.
1374 * @return the modifier mask on the <code>Event</code> class
1375 * that is used for menu shortcuts on this toolkit.
1376 * @exception HeadlessException if GraphicsEnvironment.isHeadless()
1377 * returns true
1378 * @see java.awt.GraphicsEnvironment#isHeadless
1379 * @see java.awt.MenuBar
1380 * @see java.awt.MenuShortcut
1381 * @since JDK1.1
1382 */
1383 public int getMenuShortcutKeyMask() throws HeadlessException {
1384 GraphicsEnvironment.checkHeadless();
1385
1386 return Event.CTRL_MASK;
1387 }
1388
1389 /**
1390 * Returns whether the given locking key on the keyboard is currently in
1391 * its "on" state.
1392 * Valid key codes are
1393 * {@link java.awt.event.KeyEvent#VK_CAPS_LOCK VK_CAPS_LOCK},
1394 * {@link java.awt.event.KeyEvent#VK_NUM_LOCK VK_NUM_LOCK},
1395 * {@link java.awt.event.KeyEvent#VK_SCROLL_LOCK VK_SCROLL_LOCK}, and
1396 * {@link java.awt.event.KeyEvent#VK_KANA_LOCK VK_KANA_LOCK}.
1397 *
1398 * @exception java.lang.IllegalArgumentException if <code>keyCode</code>
1399 * is not one of the valid key codes
1400 * @exception java.lang.UnsupportedOperationException if the host system doesn't
1401 * allow getting the state of this key programmatically, or if the keyboard
1402 * doesn't have this key
1403 * @exception HeadlessException if GraphicsEnvironment.isHeadless()
1404 * returns true
1405 * @see java.awt.GraphicsEnvironment#isHeadless
1406 * @since 1.3
1407 */
1408 public boolean getLockingKeyState(int keyCode)
1409 throws UnsupportedOperationException
1410 {
1411 GraphicsEnvironment.checkHeadless();
1412
1413 if (! (keyCode == KeyEvent.VK_CAPS_LOCK || keyCode == KeyEvent.VK_NUM_LOCK ||
1414 keyCode == KeyEvent.VK_SCROLL_LOCK || keyCode == KeyEvent.VK_KANA_LOCK)) {
1415 throw new IllegalArgumentException("invalid key for Toolkit.getLockingKeyState");
1416 }
1417 throw new UnsupportedOperationException("Toolkit.getLockingKeyState");
1418 }
1419
1420 /**
1421 * Sets the state of the given locking key on the keyboard.
1422 * Valid key codes are
1423 * {@link java.awt.event.KeyEvent#VK_CAPS_LOCK VK_CAPS_LOCK},
1424 * {@link java.awt.event.KeyEvent#VK_NUM_LOCK VK_NUM_LOCK},
1425 * {@link java.awt.event.KeyEvent#VK_SCROLL_LOCK VK_SCROLL_LOCK}, and
1426 * {@link java.awt.event.KeyEvent#VK_KANA_LOCK VK_KANA_LOCK}.
1427 * <p>
1428 * Depending on the platform, setting the state of a locking key may
1429 * involve event processing and therefore may not be immediately
1430 * observable through getLockingKeyState.
1431 *
1432 * @exception java.lang.IllegalArgumentException if <code>keyCode</code>
1433 * is not one of the valid key codes
1434 * @exception java.lang.UnsupportedOperationException if the host system doesn't
1435 * allow setting the state of this key programmatically, or if the keyboard
1436 * doesn't have this key
1437 * @exception HeadlessException if GraphicsEnvironment.isHeadless()
1438 * returns true
1439 * @see java.awt.GraphicsEnvironment#isHeadless
1440 * @since 1.3
1441 */
1442 public void setLockingKeyState(int keyCode, boolean on)
1443 throws UnsupportedOperationException
1444 {
1445 GraphicsEnvironment.checkHeadless();
1446
1447 if (! (keyCode == KeyEvent.VK_CAPS_LOCK || keyCode == KeyEvent.VK_NUM_LOCK ||
1448 keyCode == KeyEvent.VK_SCROLL_LOCK || keyCode == KeyEvent.VK_KANA_LOCK)) {
1449 throw new IllegalArgumentException("invalid key for Toolkit.setLockingKeyState");
1450 }
1451 throw new UnsupportedOperationException("Toolkit.setLockingKeyState");
1452 }
1453
1454 /**
1455 * Give native peers the ability to query the native container
1456 * given a native component (eg the direct parent may be lightweight).
1457 */
1458 protected static Container getNativeContainer(Component c) {
1459 return c.getNativeContainer();
1460 }
1461
1462 /**
1463 * Creates a new custom cursor object.
1464 * If the image to display is invalid, the cursor will be hidden (made
1465 * completely transparent), and the hotspot will be set to (0, 0).
1466 *
1467 * <p>Note that multi-frame images are invalid and may cause this
1468 * method to hang.
1469 *
1470 * @param cursor the image to display when the cursor is actived
1471 * @param hotSpot the X and Y of the large cursor's hot spot; the
1472 * hotSpot values must be less than the Dimension returned by
1473 * <code>getBestCursorSize</code>
1474 * @param name a localized description of the cursor, for Java Accessibility use
1475 * @exception IndexOutOfBoundsException if the hotSpot values are outside
1476 * the bounds of the cursor
1477 * @exception HeadlessException if GraphicsEnvironment.isHeadless()
1478 * returns true
1479 * @see java.awt.GraphicsEnvironment#isHeadless
1480 * @since 1.2
1481 */
1482 public Cursor createCustomCursor(Image cursor, Point hotSpot, String name)
1483 throws IndexOutOfBoundsException, HeadlessException
1484 {
1485 // Override to implement custom cursor support.
1486 if (this != Toolkit.getDefaultToolkit()) {
1487 return Toolkit.getDefaultToolkit().
1488 createCustomCursor(cursor, hotSpot, name);
1489 } else {
1490 return new Cursor(Cursor.DEFAULT_CURSOR);
1491 }
1492 }
1493
1494 /**
1495 * Returns the supported cursor dimension which is closest to the desired
1496 * sizes. Systems which only support a single cursor size will return that
1497 * size regardless of the desired sizes. Systems which don't support custom
1498 * cursors will return a dimension of 0, 0. <p>
1499 * Note: if an image is used whose dimensions don't match a supported size
1500 * (as returned by this method), the Toolkit implementation will attempt to
1501 * resize the image to a supported size.
1502 * Since converting low-resolution images is difficult,
1503 * no guarantees are made as to the quality of a cursor image which isn't a
1504 * supported size. It is therefore recommended that this method
1505 * be called and an appropriate image used so no image conversion is made.
1506 *
1507 * @param preferredWidth the preferred cursor width the component would like
1508 * to use.
1509 * @param preferredHeight the preferred cursor height the component would like
1510 * to use.
1511 * @return the closest matching supported cursor size, or a dimension of 0,0 if
1512 * the Toolkit implementation doesn't support custom cursors.
1513 * @exception HeadlessException if GraphicsEnvironment.isHeadless()
1514 * returns true
1515 * @see java.awt.GraphicsEnvironment#isHeadless
1516 * @since 1.2
1517 */
1518 public Dimension getBestCursorSize(int preferredWidth,
1519 int preferredHeight) throws HeadlessException {
1520 GraphicsEnvironment.checkHeadless();
1521
1522 // Override to implement custom cursor support.
1523 if (this != Toolkit.getDefaultToolkit()) {
1524 return Toolkit.getDefaultToolkit().
1525 getBestCursorSize(preferredWidth, preferredHeight);
1526 } else {
1527 return new Dimension(0, 0);
1528 }
1529 }
1530
1531 /**
1532 * Returns the maximum number of colors the Toolkit supports in a custom cursor
1533 * palette.<p>
1534 * Note: if an image is used which has more colors in its palette than
1535 * the supported maximum, the Toolkit implementation will attempt to flatten the
1536 * palette to the maximum. Since converting low-resolution images is difficult,
1537 * no guarantees are made as to the quality of a cursor image which has more
1538 * colors than the system supports. It is therefore recommended that this method
1539 * be called and an appropriate image used so no image conversion is made.
1540 *
1541 * @return the maximum number of colors, or zero if custom cursors are not
1542 * supported by this Toolkit implementation.
1543 * @exception HeadlessException if GraphicsEnvironment.isHeadless()
1544 * returns true
1545 * @see java.awt.GraphicsEnvironment#isHeadless
1546 * @since 1.2
1547 */
1548 public int getMaximumCursorColors() throws HeadlessException {
1549 GraphicsEnvironment.checkHeadless();
1550
1551 // Override to implement custom cursor support.
1552 if (this != Toolkit.getDefaultToolkit()) {
1553 return Toolkit.getDefaultToolkit().getMaximumCursorColors();
1554 } else {
1555 return 0;
1556 }
1557 }
1558
1559 /**
1560 * Returns whether Toolkit supports this state for
1561 * <code>Frame</code>s. This method tells whether the <em>UI
1562 * concept</em> of, say, maximization or iconification is
1563 * supported. It will always return false for "compound" states
1564 * like <code>Frame.ICONIFIED|Frame.MAXIMIZED_VERT</code>.
1565 * In other words, the rule of thumb is that only queries with a
1566 * single frame state constant as an argument are meaningful.
1567 * <p>Note that supporting a given concept is a platform-
1568 * dependent feature. Due to native limitations the Toolkit
1569 * object may report a particular state as supported, however at
1570 * the same time the Toolkit object will be unable to apply the
1571 * state to a given frame. This circumstance has two following
1572 * consequences:
1573 * <ul>
1574 * <li>Only the return value of {@code false} for the present
1575 * method actually indicates that the given state is not
1576 * supported. If the method returns {@code true} the given state
1577 * may still be unsupported and/or unavailable for a particular
1578 * frame.
1579 * <li>The developer should consider examining the value of the
1580 * {@link java.awt.event.WindowEvent#getNewState} method of the
1581 * {@code WindowEvent} received through the {@link
1582 * java.awt.event.WindowStateListener}, rather than assuming
1583 * that the state given to the {@code setExtendedState()} method
1584 * will be definitely applied. For more information see the
1585 * documentation for the {@link Frame#setExtendedState} method.
1586 * </ul>
1587 *
1588 * @param state one of named frame state constants.
1589 * @return <code>true</code> is this frame state is supported by
1590 * this Toolkit implementation, <code>false</code> otherwise.
1591 * @exception HeadlessException
1592 * if <code>GraphicsEnvironment.isHeadless()</code>
1593 * returns <code>true</code>.
1594 * @see java.awt.Window#addWindowStateListener
1595 * @since 1.4
1596 */
1597 public boolean isFrameStateSupported(int state)
1598 throws HeadlessException
1599 {
1600 GraphicsEnvironment.checkHeadless();
1601
1602 if (this != Toolkit.getDefaultToolkit()) {
1603 return Toolkit.getDefaultToolkit().
1604 isFrameStateSupported(state);
1605 } else {
1606 return (state == Frame.NORMAL); // others are not guaranteed
1607 }
1608 }
1609
1610 /**
1611 * Support for I18N: any visible strings should be stored in
1612 * sun.awt.resources.awt.properties. The ResourceBundle is stored
1613 * here, so that only one copy is maintained.
1614 */
1615 private static ResourceBundle resources;
1616
1617 /**
1618 * Initialize JNI field and method ids
1619 */
1620 private static native void initIDs();
1621
1622 /**
1623 * WARNING: This is a temporary workaround for a problem in the
1624 * way the AWT loads native libraries. A number of classes in the
1625 * AWT package have a native method, initIDs(), which initializes
1626 * the JNI field and method ids used in the native portion of
1627 * their implementation.
1628 *
1629 * Since the use and storage of these ids is done by the
1630 * implementation libraries, the implementation of these method is
1631 * provided by the particular AWT implementations (for example,
1632 * "Toolkit"s/Peer), such as Motif, Microsoft Windows, or Tiny. The
1633 * problem is that this means that the native libraries must be
1634 * loaded by the java.* classes, which do not necessarily know the
1635 * names of the libraries to load. A better way of doing this
1636 * would be to provide a separate library which defines java.awt.*
1637 * initIDs, and exports the relevant symbols out to the
1638 * implementation libraries.
1639 *
1640 * For now, we know it's done by the implementation, and we assume
1641 * that the name of the library is "awt". -br.
1642 *
1643 * If you change loadLibraries(), please add the change to
1644 * java.awt.image.ColorModel.loadLibraries(). Unfortunately,
1645 * classes can be loaded in java.awt.image that depend on
1646 * libawt and there is no way to call Toolkit.loadLibraries()
1647 * directly. -hung
1648 */
1649 private static boolean loaded = false;
1650 static void loadLibraries() {
1651 if (!loaded) {
1652 java.security.AccessController.doPrivileged(
1653 new java.security.PrivilegedAction<Void>() {
1654 public Void run() {
1655 System.loadLibrary("awt");
1656 return null;
1657 }
1658 });
1659 loaded = true;
1660 }
1661 }
1662
1663 static {
1664 java.security.AccessController.doPrivileged(
1665 new java.security.PrivilegedAction<Void>() {
1666 public Void run() {
1667 try {
1668 resources =
1669 ResourceBundle.getBundle("sun.awt.resources.awt",
1670 CoreResourceBundleControl.getRBControlInstance());
1671 } catch (MissingResourceException e) {
1672 // No resource file; defaults will be used.
1673 }
1674 return null;
1675 }
1676 });
1677
1678 // ensure that the proper libraries are loaded
1679 loadLibraries();
1680 initAssistiveTechnologies();
1681 if (!GraphicsEnvironment.isHeadless()) {
1682 initIDs();
1683 }
1684 }
1685
1686 /**
1687 * Gets a property with the specified key and default.
1688 * This method returns defaultValue if the property is not found.
1689 */
1690 public static String getProperty(String key, String defaultValue) {
1691 if (resources != null) {
1692 try {
1693 return resources.getString(key);
1694 }
1695 catch (MissingResourceException e) {}
1696 }
1697
1698 return defaultValue;
1699 }
1700
1701 /**
1702 * Get the application's or applet's EventQueue instance.
1703 * Depending on the Toolkit implementation, different EventQueues
1704 * may be returned for different applets. Applets should
1705 * therefore not assume that the EventQueue instance returned
1706 * by this method will be shared by other applets or the system.
1707 *
1708 * <p>First, if there is a security manager, its
1709 * <code>checkAwtEventQueueAccess</code>
1710 * method is called.
1711 * If the default implementation of <code>checkAwtEventQueueAccess</code>
1712 * is used (that is, that method is not overriden), then this results in
1713 * a call to the security manager's <code>checkPermission</code> method
1714 * with an <code>AWTPermission("accessEventQueue")</code> permission.
1715 *
1716 * @return the <code>EventQueue</code> object
1717 * @throws SecurityException
1718 * if a security manager exists and its <code>{@link
1719 * java.lang.SecurityManager#checkAwtEventQueueAccess}</code>
1720 * method denies access to the <code>EventQueue</code>
1721 * @see java.awt.AWTPermission
1722 */
1723 public final EventQueue getSystemEventQueue() {
1724 SecurityManager security = System.getSecurityManager();
1725 if (security != null) {
1726 security.checkAwtEventQueueAccess();
1727 }
1728 return getSystemEventQueueImpl();
1729 }
1730
1731 /**
1732 * Gets the application's or applet's <code>EventQueue</code>
1733 * instance, without checking access. For security reasons,
1734 * this can only be called from a <code>Toolkit</code> subclass.
1735 * @return the <code>EventQueue</code> object
1736 */
1737 protected abstract EventQueue getSystemEventQueueImpl();
1738
1739 /* Accessor method for use by AWT package routines. */
1740 static EventQueue getEventQueue() {
1741 return getDefaultToolkit().getSystemEventQueueImpl();
1742 }
1743
1744 /**
1745 * Creates the peer for a DragSourceContext.
1746 * Always throws InvalidDndOperationException if
1747 * GraphicsEnvironment.isHeadless() returns true.
1748 * @see java.awt.GraphicsEnvironment#isHeadless
1749 */
1750 public abstract DragSourceContextPeer createDragSourceContextPeer(DragGestureEvent dge) throws InvalidDnDOperationException;
1751
1752 /**
1753 * Creates a concrete, platform dependent, subclass of the abstract
1754 * DragGestureRecognizer class requested, and associates it with the
1755 * DragSource, Component and DragGestureListener specified.
1756 *
1757 * subclasses should override this to provide their own implementation
1758 *
1759 * @param abstractRecognizerClass The abstract class of the required recognizer
1760 * @param ds The DragSource
1761 * @param c The Component target for the DragGestureRecognizer
1762 * @param srcActions The actions permitted for the gesture
1763 * @param dgl The DragGestureListener
1764 *
1765 * @return the new object or null. Always returns null if
1766 * GraphicsEnvironment.isHeadless() returns true.
1767 * @see java.awt.GraphicsEnvironment#isHeadless
1768 */
1769 public <T extends DragGestureRecognizer> T
1770 createDragGestureRecognizer(Class<T> abstractRecognizerClass,
1771 DragSource ds, Component c, int srcActions,
1772 DragGestureListener dgl)
1773 {
1774 return null;
1775 }
1776
1777 /**
1778 * Obtains a value for the specified desktop property.
1779 *
1780 * A desktop property is a uniquely named value for a resource that
1781 * is Toolkit global in nature. Usually it also is an abstract
1782 * representation for an underlying platform dependent desktop setting.
1783 * For more information on desktop properties supported by the AWT see
1784 * <a href="doc-files/DesktopProperties.html">AWT Desktop Properties</a>.
1785 */
1786 public final synchronized Object getDesktopProperty(String propertyName) {
1787 // This is a workaround for headless toolkits. It would be
1788 // better to override this method but it is declared final.
1789 // "this instanceof" syntax defeats polymorphism.
1790 // --mm, 03/03/00
1791 if (this instanceof HeadlessToolkit) {
1792 return ((HeadlessToolkit)this).getUnderlyingToolkit()
1793 .getDesktopProperty(propertyName);
1794 }
1795
1796 if (desktopProperties.isEmpty()) {
1797 initializeDesktopProperties();
1798 }
1799
1800 Object value;
1801
1802 // This property should never be cached
1803 if (propertyName.equals("awt.dynamicLayoutSupported")) {
1804 value = lazilyLoadDesktopProperty(propertyName);
1805 return value;
1806 }
1807
1808 value = desktopProperties.get(propertyName);
1809
1810 if (value == null) {
1811 value = lazilyLoadDesktopProperty(propertyName);
1812
1813 if (value != null) {
1814 setDesktopProperty(propertyName, value);
1815 }
1816 }
1817
1818 /* for property "awt.font.desktophints" */
1819 if (value instanceof RenderingHints) {
1820 value = ((RenderingHints)value).clone();
1821 }
1822
1823 return value;
1824 }
1825
1826 /**
1827 * Sets the named desktop property to the specified value and fires a
1828 * property change event to notify any listeners that the value has changed.
1829 */
1830 protected final void setDesktopProperty(String name, Object newValue) {
1831 // This is a workaround for headless toolkits. It would be
1832 // better to override this method but it is declared final.
1833 // "this instanceof" syntax defeats polymorphism.
1834 // --mm, 03/03/00
1835 if (this instanceof HeadlessToolkit) {
1836 ((HeadlessToolkit)this).getUnderlyingToolkit()
1837 .setDesktopProperty(name, newValue);
1838 return;
1839 }
1840 Object oldValue;
1841
1842 synchronized (this) {
1843 oldValue = desktopProperties.get(name);
1844 desktopProperties.put(name, newValue);
1845 }
1846
1847 // Don't fire change event if old and new values are null.
1848 // It helps to avoid recursive resending of WM_THEMECHANGED
1849 if (oldValue != null || newValue != null) {
1850 desktopPropsSupport.firePropertyChange(name, oldValue, newValue);
1851 }
1852 }
1853
1854 /**
1855 * an opportunity to lazily evaluate desktop property values.
1856 */
1857 protected Object lazilyLoadDesktopProperty(String name) {
1858 return null;
1859 }
1860
1861 /**
1862 * initializeDesktopProperties
1863 */
1864 protected void initializeDesktopProperties() {
1865 }
1866
1867 /**
1868 * Adds the specified property change listener for the named desktop
1869 * property. When a {@link java.beans.PropertyChangeListenerProxy} object is added,
1870 * its property name is ignored, and the wrapped listener is added.
1871 * If {@code name} is {@code null} or {@code pcl} is {@code null},
1872 * no exception is thrown and no action is performed.
1873 *
1874 * @param name The name of the property to listen for
1875 * @param pcl The property change listener
1876 * @see PropertyChangeSupport#addPropertyChangeListener(String,
1877 PropertyChangeListener)
1878 * @since 1.2
1879 */
1880 public void addPropertyChangeListener(String name, PropertyChangeListener pcl) {
1881 desktopPropsSupport.addPropertyChangeListener(name, pcl);
1882 }
1883
1884 /**
1885 * Removes the specified property change listener for the named
1886 * desktop property. When a {@link java.beans.PropertyChangeListenerProxy} object
1887 * is removed, its property name is ignored, and
1888 * the wrapped listener is removed.
1889 * If {@code name} is {@code null} or {@code pcl} is {@code null},
1890 * no exception is thrown and no action is performed.
1891 *
1892 * @param name The name of the property to remove
1893 * @param pcl The property change listener
1894 * @see PropertyChangeSupport#removePropertyChangeListener(String,
1895 PropertyChangeListener)
1896 * @since 1.2
1897 */
1898 public void removePropertyChangeListener(String name, PropertyChangeListener pcl) {
1899 desktopPropsSupport.removePropertyChangeListener(name, pcl);
1900 }
1901
1902 /**
1903 * Returns an array of all the property change listeners
1904 * registered on this toolkit. The returned array
1905 * contains {@link java.beans.PropertyChangeListenerProxy} objects
1906 * that associate listeners with the names of desktop properties.
1907 *
1908 * @return all of this toolkit's {@link PropertyChangeListener}
1909 * objects wrapped in {@code java.beans.PropertyChangeListenerProxy} objects
1910 * or an empty array if no listeners are added
1911 *
1912 * @see PropertyChangeSupport#getPropertyChangeListeners()
1913 * @since 1.4
1914 */
1915 public PropertyChangeListener[] getPropertyChangeListeners() {
1916 return desktopPropsSupport.getPropertyChangeListeners();
1917 }
1918
1919 /**
1920 * Returns an array of all property change listeners
1921 * associated with the specified name of a desktop property.
1922 *
1923 * @param propertyName the named property
1924 * @return all of the {@code PropertyChangeListener} objects
1925 * associated with the specified name of a desktop property
1926 * or an empty array if no such listeners are added
1927 *
1928 * @see PropertyChangeSupport#getPropertyChangeListeners(String)
1929 * @since 1.4
1930 */
1931 public PropertyChangeListener[] getPropertyChangeListeners(String propertyName) {
1932 return desktopPropsSupport.getPropertyChangeListeners(propertyName);
1933 }
1934
1935 protected final Map<String,Object> desktopProperties =
1936 new HashMap<String,Object>();
1937 protected final PropertyChangeSupport desktopPropsSupport =
1938 Toolkit.createPropertyChangeSupport(this);
1939
1940 /**
1941 * Returns whether the always-on-top mode is supported by this toolkit.
1942 * To detect whether the always-on-top mode is supported for a
1943 * particular Window, use {@link Window#isAlwaysOnTopSupported}.
1944 * @return <code>true</code>, if current toolkit supports the always-on-top mode,
1945 * otherwise returns <code>false</code>
1946 * @see Window#isAlwaysOnTopSupported
1947 * @see Window#setAlwaysOnTop(boolean)
1948 * @since 1.6
1949 */
1950 public boolean isAlwaysOnTopSupported() {
1951 return true;
1952 }
1953
1954 /**
1955 * Returns whether the given modality type is supported by this toolkit. If
1956 * a dialog with unsupported modality type is created, then
1957 * <code>Dialog.ModalityType.MODELESS</code> is used instead.
1958 *
1959 * @param modalityType modality type to be checked for support by this toolkit
1960 *
1961 * @return <code>true</code>, if current toolkit supports given modality
1962 * type, <code>false</code> otherwise
1963 *
1964 * @see java.awt.Dialog.ModalityType
1965 * @see java.awt.Dialog#getModalityType
1966 * @see java.awt.Dialog#setModalityType
1967 *
1968 * @since 1.6
1969 */
1970 public abstract boolean isModalityTypeSupported(Dialog.ModalityType modalityType);
1971
1972 /**
1973 * Returns whether the given modal exclusion type is supported by this
1974 * toolkit. If an unsupported modal exclusion type property is set on a window,
1975 * then <code>Dialog.ModalExclusionType.NO_EXCLUDE</code> is used instead.
1976 *
1977 * @param modalExclusionType modal exclusion type to be checked for support by this toolkit
1978 *
1979 * @return <code>true</code>, if current toolkit supports given modal exclusion
1980 * type, <code>false</code> otherwise
1981 *
1982 * @see java.awt.Dialog.ModalExclusionType
1983 * @see java.awt.Window#getModalExclusionType
1984 * @see java.awt.Window#setModalExclusionType
1985 *
1986 * @since 1.6
1987 */
1988 public abstract boolean isModalExclusionTypeSupported(Dialog.ModalExclusionType modalExclusionType);
1989
1990 // 8014718: logging has been removed from SunToolkit
1991
1992 private static final int LONG_BITS = 64;
1993 private int[] calls = new int[LONG_BITS];
1994 private static volatile long enabledOnToolkitMask;
1995 private AWTEventListener eventListener = null;
1996 private WeakHashMap<AWTEventListener, SelectiveAWTEventListener> listener2SelectiveListener = new WeakHashMap<>();
1997
1998 /*
1999 * Extracts a "pure" AWTEventListener from a AWTEventListenerProxy,
2000 * if the listener is proxied.
2001 */
2002 static private AWTEventListener deProxyAWTEventListener(AWTEventListener l)
2003 {
2004 AWTEventListener localL = l;
2005
2006 if (localL == null) {
2007 return null;
2008 }
2009 // if user passed in a AWTEventListenerProxy object, extract
2010 // the listener
2011 if (l instanceof AWTEventListenerProxy) {
2012 localL = ((AWTEventListenerProxy)l).getListener();
2013 }
2014 return localL;
2015 }
2016
2017 /**
2018 * Adds an AWTEventListener to receive all AWTEvents dispatched
2019 * system-wide that conform to the given <code>eventMask</code>.
2020 * <p>
2021 * First, if there is a security manager, its <code>checkPermission</code>
2022 * method is called with an
2023 * <code>AWTPermission("listenToAllAWTEvents")</code> permission.
2024 * This may result in a SecurityException.
2025 * <p>
2026 * <code>eventMask</code> is a bitmask of event types to receive.
2027 * It is constructed by bitwise OR-ing together the event masks
2028 * defined in <code>AWTEvent</code>.
2029 * <p>
2030 * Note: event listener use is not recommended for normal
2031 * application use, but are intended solely to support special
2032 * purpose facilities including support for accessibility,
2033 * event record/playback, and diagnostic tracing.
2034 *
2035 * If listener is null, no exception is thrown and no action is performed.
2036 *
2037 * @param listener the event listener.
2038 * @param eventMask the bitmask of event types to receive
2039 * @throws SecurityException
2040 * if a security manager exists and its
2041 * <code>checkPermission</code> method doesn't allow the operation.
2042 * @see #removeAWTEventListener
2043 * @see #getAWTEventListeners
2044 * @see SecurityManager#checkPermission
2045 * @see java.awt.AWTEvent
2046 * @see java.awt.AWTPermission
2047 * @see java.awt.event.AWTEventListener
2048 * @see java.awt.event.AWTEventListenerProxy
2049 * @since 1.2
2050 */
2051 public void addAWTEventListener(AWTEventListener listener, long eventMask) {
2052 AWTEventListener localL = deProxyAWTEventListener(listener);
2053
2054 if (localL == null) {
2055 return;
2056 }
2057 SecurityManager security = System.getSecurityManager();
2058 if (security != null) {
2059 security.checkPermission(SecurityConstants.AWT.ALL_AWT_EVENTS_PERMISSION);
2060 }
2061 synchronized (this) {
2062 SelectiveAWTEventListener selectiveListener =
2063 listener2SelectiveListener.get(localL);
2064
2065 if (selectiveListener == null) {
2066 // Create a new selectiveListener.
2067 selectiveListener = new SelectiveAWTEventListener(localL,
2068 eventMask);
2069 listener2SelectiveListener.put(localL, selectiveListener);
2070 eventListener = ToolkitEventMulticaster.add(eventListener,
2071 selectiveListener);
2072 }
2073 // OR the eventMask into the selectiveListener's event mask.
2074 selectiveListener.orEventMasks(eventMask);
2075
2076 enabledOnToolkitMask |= eventMask;
2077
2078 long mask = eventMask;
2079 for (int i=0; i<LONG_BITS; i++) {
2080 // If no bits are set, break out of loop.
2081 if (mask == 0) {
2082 break;
2083 }
2084 if ((mask & 1L) != 0) { // Always test bit 0.
2085 calls[i]++;
2086 }
2087 mask >>>= 1; // Right shift, fill with zeros on left.
2088 }
2089 }
2090 }
2091
2092 /**
2093 * Removes an AWTEventListener from receiving dispatched AWTEvents.
2094 * <p>
2095 * First, if there is a security manager, its <code>checkPermission</code>
2096 * method is called with an
2097 * <code>AWTPermission("listenToAllAWTEvents")</code> permission.
2098 * This may result in a SecurityException.
2099 * <p>
2100 * Note: event listener use is not recommended for normal
2101 * application use, but are intended solely to support special
2102 * purpose facilities including support for accessibility,
2103 * event record/playback, and diagnostic tracing.
2104 *
2105 * If listener is null, no exception is thrown and no action is performed.
2106 *
2107 * @param listener the event listener.
2108 * @throws SecurityException
2109 * if a security manager exists and its
2110 * <code>checkPermission</code> method doesn't allow the operation.
2111 * @see #addAWTEventListener
2112 * @see #getAWTEventListeners
2113 * @see SecurityManager#checkPermission
2114 * @see java.awt.AWTEvent
2115 * @see java.awt.AWTPermission
2116 * @see java.awt.event.AWTEventListener
2117 * @see java.awt.event.AWTEventListenerProxy
2118 * @since 1.2
2119 */
2120 public void removeAWTEventListener(AWTEventListener listener) {
2121 AWTEventListener localL = deProxyAWTEventListener(listener);
2122
2123 if (listener == null) {
2124 return;
2125 }
2126 SecurityManager security = System.getSecurityManager();
2127 if (security != null) {
2128 security.checkPermission(SecurityConstants.AWT.ALL_AWT_EVENTS_PERMISSION);
2129 }
2130
2131 synchronized (this) {
2132 SelectiveAWTEventListener selectiveListener =
2133 listener2SelectiveListener.get(localL);
2134
2135 if (selectiveListener != null) {
2136 listener2SelectiveListener.remove(localL);
2137 int[] listenerCalls = selectiveListener.getCalls();
2138 for (int i=0; i<LONG_BITS; i++) {
2139 calls[i] -= listenerCalls[i];
2140 assert calls[i] >= 0: "Negative Listeners count";
2141
2142 if (calls[i] == 0) {
2143 enabledOnToolkitMask &= ~(1L<<i);
2144 }
2145 }
2146 }
2147 eventListener = ToolkitEventMulticaster.remove(eventListener,
2148 (selectiveListener == null) ? localL : selectiveListener);
2149 }
2150 }
2151
2152 static boolean enabledOnToolkit(long eventMask) {
2153 return (enabledOnToolkitMask & eventMask) != 0;
2154 }
2155
2156 synchronized int countAWTEventListeners(long eventMask) {
2157 int ci = 0;
2158 for (; eventMask != 0; eventMask >>>= 1, ci++) {
2159 }
2160 ci--;
2161 return calls[ci];
2162 }
2163 /**
2164 * Returns an array of all the <code>AWTEventListener</code>s
2165 * registered on this toolkit.
2166 * If there is a security manager, its {@code checkPermission}
2167 * method is called with an
2168 * {@code AWTPermission("listenToAllAWTEvents")} permission.
2169 * This may result in a SecurityException.
2170 * Listeners can be returned
2171 * within <code>AWTEventListenerProxy</code> objects, which also contain
2172 * the event mask for the given listener.
2173 * Note that listener objects
2174 * added multiple times appear only once in the returned array.
2175 *
2176 * @return all of the <code>AWTEventListener</code>s or an empty
2177 * array if no listeners are currently registered
2178 * @throws SecurityException
2179 * if a security manager exists and its
2180 * <code>checkPermission</code> method doesn't allow the operation.
2181 * @see #addAWTEventListener
2182 * @see #removeAWTEventListener
2183 * @see SecurityManager#checkPermission
2184 * @see java.awt.AWTEvent
2185 * @see java.awt.AWTPermission
2186 * @see java.awt.event.AWTEventListener
2187 * @see java.awt.event.AWTEventListenerProxy
2188 * @since 1.4
2189 */
2190 public AWTEventListener[] getAWTEventListeners() {
2191 SecurityManager security = System.getSecurityManager();
2192 if (security != null) {
2193 security.checkPermission(SecurityConstants.AWT.ALL_AWT_EVENTS_PERMISSION);
2194 }
2195 synchronized (this) {
2196 EventListener[] la = ToolkitEventMulticaster.getListeners(eventListener,AWTEventListener.class);
2197
2198 AWTEventListener[] ret = new AWTEventListener[la.length];
2199 for (int i = 0; i < la.length; i++) {
2200 SelectiveAWTEventListener sael = (SelectiveAWTEventListener)la[i];
2201 AWTEventListener tempL = sael.getListener();
2202 //assert tempL is not an AWTEventListenerProxy - we should
2203 // have weeded them all out
2204 // don't want to wrap a proxy inside a proxy
2205 ret[i] = new AWTEventListenerProxy(sael.getEventMask(), tempL);
2206 }
2207 return ret;
2208 }
2209 }
2210
2211 /**
2212 * Returns an array of all the <code>AWTEventListener</code>s
2213 * registered on this toolkit which listen to all of the event
2214 * types specified in the {@code eventMask} argument.
2215 * If there is a security manager, its {@code checkPermission}
2216 * method is called with an
2217 * {@code AWTPermission("listenToAllAWTEvents")} permission.
2218 * This may result in a SecurityException.
2219 * Listeners can be returned
2220 * within <code>AWTEventListenerProxy</code> objects, which also contain
2221 * the event mask for the given listener.
2222 * Note that listener objects
2223 * added multiple times appear only once in the returned array.
2224 *
2225 * @param eventMask the bitmask of event types to listen for
2226 * @return all of the <code>AWTEventListener</code>s registered
2227 * on this toolkit for the specified
2228 * event types, or an empty array if no such listeners
2229 * are currently registered
2230 * @throws SecurityException
2231 * if a security manager exists and its
2232 * <code>checkPermission</code> method doesn't allow the operation.
2233 * @see #addAWTEventListener
2234 * @see #removeAWTEventListener
2235 * @see SecurityManager#checkPermission
2236 * @see java.awt.AWTEvent
2237 * @see java.awt.AWTPermission
2238 * @see java.awt.event.AWTEventListener
2239 * @see java.awt.event.AWTEventListenerProxy
2240 * @since 1.4
2241 */
2242 public AWTEventListener[] getAWTEventListeners(long eventMask) {
2243 SecurityManager security = System.getSecurityManager();
2244 if (security != null) {
2245 security.checkPermission(SecurityConstants.AWT.ALL_AWT_EVENTS_PERMISSION);
2246 }
2247 synchronized (this) {
2248 EventListener[] la = ToolkitEventMulticaster.getListeners(eventListener,AWTEventListener.class);
2249
2250 java.util.List<AWTEventListenerProxy> list = new ArrayList<>(la.length);
2251
2252 for (int i = 0; i < la.length; i++) {
2253 SelectiveAWTEventListener sael = (SelectiveAWTEventListener)la[i];
2254 if ((sael.getEventMask() & eventMask) == eventMask) {
2255 //AWTEventListener tempL = sael.getListener();
2256 list.add(new AWTEventListenerProxy(sael.getEventMask(),
2257 sael.getListener()));
2258 }
2259 }
2260 return list.toArray(new AWTEventListener[0]);
2261 }
2262 }
2263
2264 /*
2265 * This method notifies any AWTEventListeners that an event
2266 * is about to be dispatched.
2267 *
2268 * @param theEvent the event which will be dispatched.
2269 */
2270 void notifyAWTEventListeners(AWTEvent theEvent) {
2271 // This is a workaround for headless toolkits. It would be
2272 // better to override this method but it is declared package private.
2273 // "this instanceof" syntax defeats polymorphism.
2274 // --mm, 03/03/00
2275 if (this instanceof HeadlessToolkit) {
2276 ((HeadlessToolkit)this).getUnderlyingToolkit()
2277 .notifyAWTEventListeners(theEvent);
2278 return;
2279 }
2280
2281 AWTEventListener eventListener = this.eventListener;
2282 if (eventListener != null) {
2283 eventListener.eventDispatched(theEvent);
2284 }
2285 }
2286
2287 static private class ToolkitEventMulticaster extends AWTEventMulticaster
2288 implements AWTEventListener {
2289 // Implementation cloned from AWTEventMulticaster.
2290
2291 ToolkitEventMulticaster(AWTEventListener a, AWTEventListener b) {
2292 super(a, b);
2293 }
2294
2295 static AWTEventListener add(AWTEventListener a,
2296 AWTEventListener b) {
2297 if (a == null) return b;
2298 if (b == null) return a;
2299 return new ToolkitEventMulticaster(a, b);
2300 }
2301
2302 static AWTEventListener remove(AWTEventListener l,
2303 AWTEventListener oldl) {
2304 return (AWTEventListener) removeInternal(l, oldl);
2305 }
2306
2307 // #4178589: must overload remove(EventListener) to call our add()
2308 // instead of the static addInternal() so we allocate a
2309 // ToolkitEventMulticaster instead of an AWTEventMulticaster.
2310 // Note: this method is called by AWTEventListener.removeInternal(),
2311 // so its method signature must match AWTEventListener.remove().
2312 protected EventListener remove(EventListener oldl) {
2313 if (oldl == a) return b;
2314 if (oldl == b) return a;
2315 AWTEventListener a2 = (AWTEventListener)removeInternal(a, oldl);
2316 AWTEventListener b2 = (AWTEventListener)removeInternal(b, oldl);
2317 if (a2 == a && b2 == b) {
2318 return this; // it's not here
2319 }
2320 return add(a2, b2);
2321 }
2322
2323 public void eventDispatched(AWTEvent event) {
2324 ((AWTEventListener)a).eventDispatched(event);
2325 ((AWTEventListener)b).eventDispatched(event);
2326 }
2327 }
2328
2329 private class SelectiveAWTEventListener implements AWTEventListener {
2330 AWTEventListener listener;
2331 private long eventMask;
2332 // This array contains the number of times to call the eventlistener
2333 // for each event type.
2334 int[] calls = new int[Toolkit.LONG_BITS];
2335
2336 public AWTEventListener getListener() {return listener;}
2337 public long getEventMask() {return eventMask;}
2338 public int[] getCalls() {return calls;}
2339
2340 public void orEventMasks(long mask) {
2341 eventMask |= mask;
2342 // For each event bit set in mask, increment its call count.
2343 for (int i=0; i<Toolkit.LONG_BITS; i++) {
2344 // If no bits are set, break out of loop.
2345 if (mask == 0) {
2346 break;
2347 }
2348 if ((mask & 1L) != 0) { // Always test bit 0.
2349 calls[i]++;
2350 }
2351 mask >>>= 1; // Right shift, fill with zeros on left.
2352 }
2353 }
2354
2355 SelectiveAWTEventListener(AWTEventListener l, long mask) {
2356 listener = l;
2357 eventMask = mask;
2358 }
2359
2360 public void eventDispatched(AWTEvent event) {
2361 long eventBit = 0; // Used to save the bit of the event type.
2362 if (((eventBit = eventMask & AWTEvent.COMPONENT_EVENT_MASK) != 0 &&
2363 event.id >= ComponentEvent.COMPONENT_FIRST &&
2364 event.id <= ComponentEvent.COMPONENT_LAST)
2365 || ((eventBit = eventMask & AWTEvent.CONTAINER_EVENT_MASK) != 0 &&
2366 event.id >= ContainerEvent.CONTAINER_FIRST &&
2367 event.id <= ContainerEvent.CONTAINER_LAST)
2368 || ((eventBit = eventMask & AWTEvent.FOCUS_EVENT_MASK) != 0 &&
2369 event.id >= FocusEvent.FOCUS_FIRST &&
2370 event.id <= FocusEvent.FOCUS_LAST)
2371 || ((eventBit = eventMask & AWTEvent.KEY_EVENT_MASK) != 0 &&
2372 event.id >= KeyEvent.KEY_FIRST &&
2373 event.id <= KeyEvent.KEY_LAST)
2374 || ((eventBit = eventMask & AWTEvent.MOUSE_WHEEL_EVENT_MASK) != 0 &&
2375 event.id == MouseEvent.MOUSE_WHEEL)
2376 || ((eventBit = eventMask & AWTEvent.MOUSE_MOTION_EVENT_MASK) != 0 &&
2377 (event.id == MouseEvent.MOUSE_MOVED ||
2378 event.id == MouseEvent.MOUSE_DRAGGED))
2379 || ((eventBit = eventMask & AWTEvent.MOUSE_EVENT_MASK) != 0 &&
2380 event.id != MouseEvent.MOUSE_MOVED &&
2381 event.id != MouseEvent.MOUSE_DRAGGED &&
2382 event.id != MouseEvent.MOUSE_WHEEL &&
2383 event.id >= MouseEvent.MOUSE_FIRST &&
2384 event.id <= MouseEvent.MOUSE_LAST)
2385 || ((eventBit = eventMask & AWTEvent.WINDOW_EVENT_MASK) != 0 &&
2386 (event.id >= WindowEvent.WINDOW_FIRST &&
2387 event.id <= WindowEvent.WINDOW_LAST))
2388 || ((eventBit = eventMask & AWTEvent.ACTION_EVENT_MASK) != 0 &&
2389 event.id >= ActionEvent.ACTION_FIRST &&
2390 event.id <= ActionEvent.ACTION_LAST)
2391 || ((eventBit = eventMask & AWTEvent.ADJUSTMENT_EVENT_MASK) != 0 &&
2392 event.id >= AdjustmentEvent.ADJUSTMENT_FIRST &&
2393 event.id <= AdjustmentEvent.ADJUSTMENT_LAST)
2394 || ((eventBit = eventMask & AWTEvent.ITEM_EVENT_MASK) != 0 &&
2395 event.id >= ItemEvent.ITEM_FIRST &&
2396 event.id <= ItemEvent.ITEM_LAST)
2397 || ((eventBit = eventMask & AWTEvent.TEXT_EVENT_MASK) != 0 &&
2398 event.id >= TextEvent.TEXT_FIRST &&
2399 event.id <= TextEvent.TEXT_LAST)
2400 || ((eventBit = eventMask & AWTEvent.INPUT_METHOD_EVENT_MASK) != 0 &&
2401 event.id >= InputMethodEvent.INPUT_METHOD_FIRST &&
2402 event.id <= InputMethodEvent.INPUT_METHOD_LAST)
2403 || ((eventBit = eventMask & AWTEvent.PAINT_EVENT_MASK) != 0 &&
2404 event.id >= PaintEvent.PAINT_FIRST &&
2405 event.id <= PaintEvent.PAINT_LAST)
2406 || ((eventBit = eventMask & AWTEvent.INVOCATION_EVENT_MASK) != 0 &&
2407 event.id >= InvocationEvent.INVOCATION_FIRST &&
2408 event.id <= InvocationEvent.INVOCATION_LAST)
2409 || ((eventBit = eventMask & AWTEvent.HIERARCHY_EVENT_MASK) != 0 &&
2410 event.id == HierarchyEvent.HIERARCHY_CHANGED)
2411 || ((eventBit = eventMask & AWTEvent.HIERARCHY_BOUNDS_EVENT_MASK) != 0 &&
2412 (event.id == HierarchyEvent.ANCESTOR_MOVED ||
2413 event.id == HierarchyEvent.ANCESTOR_RESIZED))
2414 || ((eventBit = eventMask & AWTEvent.WINDOW_STATE_EVENT_MASK) != 0 &&
2415 event.id == WindowEvent.WINDOW_STATE_CHANGED)
2416 || ((eventBit = eventMask & AWTEvent.WINDOW_FOCUS_EVENT_MASK) != 0 &&
2417 (event.id == WindowEvent.WINDOW_GAINED_FOCUS ||
2418 event.id == WindowEvent.WINDOW_LOST_FOCUS))
2419 || ((eventBit = eventMask & sun.awt.SunToolkit.GRAB_EVENT_MASK) != 0 &&
2420 (event instanceof sun.awt.UngrabEvent))) {
2421 // Get the index of the call count for this event type.
2422 // Instead of using Math.log(...) we will calculate it with
2423 // bit shifts. That's what previous implementation looked like:
2424 //
2425 // int ci = (int) (Math.log(eventBit)/Math.log(2));
2426 int ci = 0;
2427 for (long eMask = eventBit; eMask != 0; eMask >>>= 1, ci++) {
2428 }
2429 ci--;
2430 // Call the listener as many times as it was added for this
2431 // event type.
2432 for (int i=0; i<calls[ci]; i++) {
2433 listener.eventDispatched(event);
2434 }
2435 }
2436 }
2437 }
2438
2439 /**
2440 * Returns a map of visual attributes for the abstract level description
2441 * of the given input method highlight, or null if no mapping is found.
2442 * The style field of the input method highlight is ignored. The map
2443 * returned is unmodifiable.
2444 * @param highlight input method highlight
2445 * @return style attribute map, or <code>null</code>
2446 * @exception HeadlessException if
2447 * <code>GraphicsEnvironment.isHeadless</code> returns true
2448 * @see java.awt.GraphicsEnvironment#isHeadless
2449 * @since 1.3
2450 */
2451 public abstract Map<java.awt.font.TextAttribute,?>
2452 mapInputMethodHighlight(InputMethodHighlight highlight)
2453 throws HeadlessException;
2454
2455 private static PropertyChangeSupport createPropertyChangeSupport(Toolkit toolkit) {
2456 if (toolkit instanceof SunToolkit || toolkit instanceof HeadlessToolkit) {
2457 return new DesktopPropertyChangeSupport(toolkit);
2458 } else {
2459 return new PropertyChangeSupport(toolkit);
2460 }
2461 }
2462
2463 @SuppressWarnings("serial")
2464 private static class DesktopPropertyChangeSupport extends PropertyChangeSupport {
2465
2466 private static final StringBuilder PROP_CHANGE_SUPPORT_KEY =
2467 new StringBuilder("desktop property change support key");
2468 private final Object source;
2469
2470 public DesktopPropertyChangeSupport(Object sourceBean) {
2471 super(sourceBean);
2472 source = sourceBean;
2473 }
2474
2475 @Override
2476 public synchronized void addPropertyChangeListener(
2477 String propertyName,
2478 PropertyChangeListener listener)
2479 {
2480 PropertyChangeSupport pcs = (PropertyChangeSupport)
2481 AppContext.getAppContext().get(PROP_CHANGE_SUPPORT_KEY);
2482 if (null == pcs) {
2483 pcs = new PropertyChangeSupport(source);
2484 AppContext.getAppContext().put(PROP_CHANGE_SUPPORT_KEY, pcs);
2485 }
2486 pcs.addPropertyChangeListener(propertyName, listener);
2487 }
2488
2489 @Override
2490 public synchronized void removePropertyChangeListener(
2491 String propertyName,
2492 PropertyChangeListener listener)
2493 {
2494 PropertyChangeSupport pcs = (PropertyChangeSupport)
2495 AppContext.getAppContext().get(PROP_CHANGE_SUPPORT_KEY);
2496 if (null != pcs) {
2497 pcs.removePropertyChangeListener(propertyName, listener);
2498 }
2499 }
2500
2501 @Override
2502 public synchronized PropertyChangeListener[] getPropertyChangeListeners()
2503 {
2504 PropertyChangeSupport pcs = (PropertyChangeSupport)
2505 AppContext.getAppContext().get(PROP_CHANGE_SUPPORT_KEY);
2506 if (null != pcs) {
2507 return pcs.getPropertyChangeListeners();
2508 } else {
2509 return new PropertyChangeListener[0];
2510 }
2511 }
2512
2513 @Override
2514 public synchronized PropertyChangeListener[] getPropertyChangeListeners(String propertyName)
2515 {
2516 PropertyChangeSupport pcs = (PropertyChangeSupport)
2517 AppContext.getAppContext().get(PROP_CHANGE_SUPPORT_KEY);
2518 if (null != pcs) {
2519 return pcs.getPropertyChangeListeners(propertyName);
2520 } else {
2521 return new PropertyChangeListener[0];
2522 }
2523 }
2524
2525 @Override
2526 public synchronized void addPropertyChangeListener(PropertyChangeListener listener) {
2527 PropertyChangeSupport pcs = (PropertyChangeSupport)
2528 AppContext.getAppContext().get(PROP_CHANGE_SUPPORT_KEY);
2529 if (null == pcs) {
2530 pcs = new PropertyChangeSupport(source);
2531 AppContext.getAppContext().put(PROP_CHANGE_SUPPORT_KEY, pcs);
2532 }
2533 pcs.addPropertyChangeListener(listener);
2534 }
2535
2536 @Override
2537 public synchronized void removePropertyChangeListener(PropertyChangeListener listener) {
2538 PropertyChangeSupport pcs = (PropertyChangeSupport)
2539 AppContext.getAppContext().get(PROP_CHANGE_SUPPORT_KEY);
2540 if (null != pcs) {
2541 pcs.removePropertyChangeListener(listener);
2542 }
2543 }
2544
2545 /*
2546 * we do expect that all other fireXXX() methods of java.beans.PropertyChangeSupport
2547 * use this method. If this will be changed we will need to change this class.
2548 */
2549 @Override
2550 public void firePropertyChange(final PropertyChangeEvent evt) {
2551 Object oldValue = evt.getOldValue();
2552 Object newValue = evt.getNewValue();
2553 String propertyName = evt.getPropertyName();
2554 if (oldValue != null && newValue != null && oldValue.equals(newValue)) {
2555 return;
2556 }
2557 Runnable updater = new Runnable() {
2558 public void run() {
2559 PropertyChangeSupport pcs = (PropertyChangeSupport)
2560 AppContext.getAppContext().get(PROP_CHANGE_SUPPORT_KEY);
2561 if (null != pcs) {
2562 pcs.firePropertyChange(evt);
2563 }
2564 }
2565 };
2566 final AppContext currentAppContext = AppContext.getAppContext();
2567 for (AppContext appContext : AppContext.getAppContexts()) {
2568 if (null == appContext || appContext.isDisposed()) {
2569 continue;
2570 }
2571 if (currentAppContext == appContext) {
2572 updater.run();
2573 } else {
2574 final PeerEvent e = new PeerEvent(source, updater, PeerEvent.ULTIMATE_PRIORITY_EVENT);
2575 SunToolkit.postEvent(appContext, e);
2576 }
2577 }
2578 }
2579 }
2580
2581 /**
2582 * Reports whether events from extra mouse buttons are allowed to be processed and posted into
2583 * {@code EventQueue}.
2584 * <br>
2585 * To change the returned value it is necessary to set the {@code sun.awt.enableExtraMouseButtons}
2586 * property before the {@code Toolkit} class initialization. This setting could be done on the application
2587 * startup by the following command:
2588 * <pre>
2589 * java -Dsun.awt.enableExtraMouseButtons=false Application
2590 * </pre>
2591 * Alternatively, the property could be set in the application by using the following code:
2592 * <pre>
2593 * System.setProperty("sun.awt.enableExtraMouseButtons", "true");
2594 * </pre>
2595 * before the {@code Toolkit} class initialization.
2596 * If not set by the time of the {@code Toolkit} class initialization, this property will be
2597 * initialized with {@code true}.
2598 * Changing this value after the {@code Toolkit} class initialization will have no effect.
2599 * <p>
2600 * @exception HeadlessException if GraphicsEnvironment.isHeadless() returns true
2601 * @return {@code true} if events from extra mouse buttons are allowed to be processed and posted;
2602 * {@code false} otherwise
2603 * @see System#getProperty(String propertyName)
2604 * @see System#setProperty(String propertyName, String value)
2605 * @see java.awt.EventQueue
2606 * @since 1.7
2607 */
2608 public boolean areExtraMouseButtonsEnabled() throws HeadlessException {
2609 GraphicsEnvironment.checkHeadless();
2610
2611 return Toolkit.getDefaultToolkit().areExtraMouseButtonsEnabled();
2612 }
2613 }