1 /*
2 * Copyright (c) 1995, 2014, 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 package java.awt;
26
27 import java.awt.event.*;
28 import java.awt.geom.Path2D;
29 import java.awt.geom.Point2D;
30 import java.awt.im.InputContext;
31 import java.awt.image.BufferStrategy;
32 import java.awt.image.BufferedImage;
33 import java.awt.peer.ComponentPeer;
34 import java.awt.peer.WindowPeer;
35 import java.beans.PropertyChangeListener;
36 import java.io.IOException;
37 import java.io.ObjectInputStream;
38 import java.io.ObjectOutputStream;
39 import java.io.OptionalDataException;
40 import java.io.Serializable;
41 import java.lang.ref.WeakReference;
42 import java.lang.reflect.InvocationTargetException;
43 import java.security.AccessController;
44 import java.util.ArrayList;
45 import java.util.Arrays;
46 import java.util.EventListener;
47 import java.util.Locale;
48 import java.util.ResourceBundle;
49 import java.util.Set;
50 import java.util.Vector;
51 import java.util.concurrent.atomic.AtomicBoolean;
52 import javax.accessibility.*;
53 import sun.awt.AWTAccessor;
54 import sun.awt.AWTPermissions;
55 import sun.awt.AppContext;
56 import sun.awt.CausedFocusEvent;
57 import sun.awt.SunToolkit;
58 import sun.awt.util.IdentityArrayList;
59 import sun.java2d.Disposer;
60 import sun.java2d.pipe.Region;
61 import sun.security.action.GetPropertyAction;
62 import sun.util.logging.PlatformLogger;
63
64 /**
65 * A {@code Window} object is a top-level window with no borders and no
66 * menubar.
67 * The default layout for a window is {@code BorderLayout}.
68 * <p>
69 * A window must have either a frame, dialog, or another window defined as its
70 * owner when it's constructed.
71 * <p>
72 * In a multi-screen environment, you can create a {@code Window}
73 * on a different screen device by constructing the {@code Window}
74 * with {@link #Window(Window, GraphicsConfiguration)}. The
75 * {@code GraphicsConfiguration} object is one of the
76 * {@code GraphicsConfiguration} objects of the target screen device.
77 * <p>
78 * In a virtual device multi-screen environment in which the desktop
79 * area could span multiple physical screen devices, the bounds of all
80 * configurations are relative to the virtual device coordinate system.
81 * The origin of the virtual-coordinate system is at the upper left-hand
82 * corner of the primary physical screen. Depending on the location of
83 * the primary screen in the virtual device, negative coordinates are
84 * possible, as shown in the following figure.
85 * <p>
86 * <img src="doc-files/MultiScreen.gif"
87 * alt="Diagram shows virtual device containing 4 physical screens. Primary physical screen shows coords (0,0), other screen shows (-80,-100)."
88 * style="float:center; margin: 7px 10px;">
89 * <p>
90 * In such an environment, when calling {@code setLocation},
91 * you must pass a virtual coordinate to this method. Similarly,
92 * calling {@code getLocationOnScreen} on a {@code Window} returns
93 * virtual device coordinates. Call the {@code getBounds} method
94 * of a {@code GraphicsConfiguration} to find its origin in the virtual
95 * coordinate system.
96 * <p>
97 * The following code sets the location of a {@code Window}
98 * at (10, 10) relative to the origin of the physical screen
99 * of the corresponding {@code GraphicsConfiguration}. If the
100 * bounds of the {@code GraphicsConfiguration} is not taken
101 * into account, the {@code Window} location would be set
102 * at (10, 10) relative to the virtual-coordinate system and would appear
103 * on the primary physical screen, which might be different from the
104 * physical screen of the specified {@code GraphicsConfiguration}.
105 *
106 * <pre>
107 * Window w = new Window(Window owner, GraphicsConfiguration gc);
108 * Rectangle bounds = gc.getBounds();
109 * w.setLocation(10 + bounds.x, 10 + bounds.y);
110 * </pre>
111 *
112 * <p>
113 * Note: the location and size of top-level windows (including
114 * {@code Window}s, {@code Frame}s, and {@code Dialog}s)
115 * are under the control of the desktop's window management system.
116 * Calls to {@code setLocation}, {@code setSize}, and
117 * {@code setBounds} are requests (not directives) which are
118 * forwarded to the window management system. Every effort will be
119 * made to honor such requests. However, in some cases the window
120 * management system may ignore such requests, or modify the requested
121 * geometry in order to place and size the {@code Window} in a way
122 * that more closely matches the desktop settings.
123 * <p>
124 * Due to the asynchronous nature of native event handling, the results
125 * returned by {@code getBounds}, {@code getLocation},
126 * {@code getLocationOnScreen}, and {@code getSize} might not
127 * reflect the actual geometry of the Window on screen until the last
128 * request has been processed. During the processing of subsequent
129 * requests these values might change accordingly while the window
130 * management system fulfills the requests.
131 * <p>
132 * An application may set the size and location of an invisible
133 * {@code Window} arbitrarily, but the window management system may
134 * subsequently change its size and/or location when the
135 * {@code Window} is made visible. One or more {@code ComponentEvent}s
136 * will be generated to indicate the new geometry.
137 * <p>
138 * Windows are capable of generating the following WindowEvents:
139 * WindowOpened, WindowClosed, WindowGainedFocus, WindowLostFocus.
140 *
141 * @author Sami Shaio
142 * @author Arthur van Hoff
143 * @see WindowEvent
144 * @see #addWindowListener
145 * @see java.awt.BorderLayout
146 * @since 1.0
147 */
148 public class Window extends Container implements Accessible {
149
150 /**
151 * Enumeration of available <i>window types</i>.
152 *
153 * A window type defines the generic visual appearance and behavior of a
154 * top-level window. For example, the type may affect the kind of
155 * decorations of a decorated {@code Frame} or {@code Dialog} instance.
156 * <p>
157 * Some platforms may not fully support a certain window type. Depending on
158 * the level of support, some properties of the window type may be
159 * disobeyed.
160 *
161 * @see #getType
162 * @see #setType
163 * @since 1.7
164 */
165 public static enum Type {
166 /**
167 * Represents a <i>normal</i> window.
168 *
169 * This is the default type for objects of the {@code Window} class or
170 * its descendants. Use this type for regular top-level windows.
171 */
172 NORMAL,
173
174 /**
175 * Represents a <i>utility</i> window.
176 *
177 * A utility window is usually a small window such as a toolbar or a
178 * palette. The native system may render the window with smaller
179 * title-bar if the window is either a {@code Frame} or a {@code
180 * Dialog} object, and if it has its decorations enabled.
181 */
182 UTILITY,
183
184 /**
185 * Represents a <i>popup</i> window.
186 *
187 * A popup window is a temporary window such as a drop-down menu or a
188 * tooltip. On some platforms, windows of that type may be forcibly
189 * made undecorated even if they are instances of the {@code Frame} or
190 * {@code Dialog} class, and have decorations enabled.
191 */
192 POPUP
193 }
194
195 /**
196 * This represents the warning message that is
197 * to be displayed in a non secure window. ie :
198 * a window that has a security manager installed that denies
199 * {@code AWTPermission("showWindowWithoutWarningBanner")}.
200 * This message can be displayed anywhere in the window.
201 *
202 * @serial
203 * @see #getWarningString
204 */
205 String warningString;
206
207 /**
208 * {@code icons} is the graphical way we can
209 * represent the frames and dialogs.
210 * {@code Window} can't display icon but it's
211 * being inherited by owned {@code Dialog}s.
212 *
213 * @serial
214 * @see #getIconImages
215 * @see #setIconImages
216 */
217 transient java.util.List<Image> icons;
218
219 /**
220 * Holds the reference to the component which last had focus in this window
221 * before it lost focus.
222 */
223 private transient Component temporaryLostComponent;
224
225 static boolean systemSyncLWRequests = false;
226 boolean syncLWRequests = false;
227 transient boolean beforeFirstShow = true;
228 private transient boolean disposing = false;
229 transient WindowDisposerRecord disposerRecord = null;
230
231 static final int OPENED = 0x01;
232
233 /**
234 * An Integer value representing the Window State.
235 *
236 * @serial
237 * @since 1.2
238 * @see #show
239 */
240 int state;
241
242 /**
243 * A boolean value representing Window always-on-top state
244 * @since 1.5
245 * @serial
246 * @see #setAlwaysOnTop
247 * @see #isAlwaysOnTop
248 */
249 private boolean alwaysOnTop;
250
251 /**
252 * Contains all the windows that have a peer object associated,
253 * i. e. between addNotify() and removeNotify() calls. The list
254 * of all Window instances can be obtained from AppContext object.
255 *
256 * @since 1.6
257 */
258 private static final IdentityArrayList<Window> allWindows = new IdentityArrayList<Window>();
259
260 /**
261 * A vector containing all the windows this
262 * window currently owns.
263 * @since 1.2
264 * @see #getOwnedWindows
265 */
266 transient Vector<WeakReference<Window>> ownedWindowList =
267 new Vector<WeakReference<Window>>();
268
269 /*
270 * We insert a weak reference into the Vector of all Windows in AppContext
271 * instead of 'this' so that garbage collection can still take place
272 * correctly.
273 */
274 private transient WeakReference<Window> weakThis;
275
276 transient boolean showWithParent;
277
278 /**
279 * Contains the modal dialog that blocks this window, or null
280 * if the window is unblocked.
281 *
282 * @since 1.6
283 */
284 transient Dialog modalBlocker;
285
286 /**
287 * @serial
288 *
289 * @see java.awt.Dialog.ModalExclusionType
290 * @see #getModalExclusionType
291 * @see #setModalExclusionType
292 *
293 * @since 1.6
294 */
295 Dialog.ModalExclusionType modalExclusionType;
296
297 transient WindowListener windowListener;
298 transient WindowStateListener windowStateListener;
299 transient WindowFocusListener windowFocusListener;
300
301 transient InputContext inputContext;
302 private transient Object inputContextLock = new Object();
303
304 /**
305 * Unused. Maintained for serialization backward-compatibility.
306 *
307 * @serial
308 * @since 1.2
309 */
310 private FocusManager focusMgr;
311
312 /**
313 * Indicates whether this Window can become the focused Window.
314 *
315 * @serial
316 * @see #getFocusableWindowState
317 * @see #setFocusableWindowState
318 * @since 1.4
319 */
320 private boolean focusableWindowState = true;
321
322 /**
323 * Indicates whether this window should receive focus on
324 * subsequently being shown (with a call to {@code setVisible(true)}), or
325 * being moved to the front (with a call to {@code toFront()}).
326 *
327 * @serial
328 * @see #setAutoRequestFocus
329 * @see #isAutoRequestFocus
330 * @since 1.7
331 */
332 private volatile boolean autoRequestFocus = true;
333
334 /*
335 * Indicates that this window is being shown. This flag is set to true at
336 * the beginning of show() and to false at the end of show().
337 *
338 * @see #show()
339 * @see Dialog#shouldBlock
340 */
341 transient boolean isInShow = false;
342
343 /**
344 * The opacity level of the window
345 *
346 * @serial
347 * @see #setOpacity(float)
348 * @see #getOpacity()
349 * @since 1.7
350 */
351 private float opacity = 1.0f;
352
353 /**
354 * The shape assigned to this window. This field is set to {@code null} if
355 * no shape is set (rectangular window).
356 *
357 * @serial
358 * @see #getShape()
359 * @see #setShape(Shape)
360 * @since 1.7
361 */
362 private Shape shape = null;
363
364 private static final String base = "win";
365 private static int nameCounter = 0;
366
367 /*
368 * JDK 1.1 serialVersionUID
369 */
370 private static final long serialVersionUID = 4497834738069338734L;
371
372 private static final PlatformLogger log = PlatformLogger.getLogger("java.awt.Window");
373
374 private static final boolean locationByPlatformProp;
375
376 transient boolean isTrayIconWindow = false;
377
378 /**
379 * These fields are initialized in the native peer code
380 * or via AWTAccessor's WindowAccessor.
381 */
382 private transient volatile int securityWarningWidth = 0;
383 private transient volatile int securityWarningHeight = 0;
384
385 /**
386 * These fields represent the desired location for the security
387 * warning if this window is untrusted.
388 * See com.sun.awt.SecurityWarning for more details.
389 */
390 private transient double securityWarningPointX = 2.0;
391 private transient double securityWarningPointY = 0.0;
392 private transient float securityWarningAlignmentX = RIGHT_ALIGNMENT;
393 private transient float securityWarningAlignmentY = TOP_ALIGNMENT;
394
395 static {
396 /* ensure that the necessary native libraries are loaded */
397 Toolkit.loadLibraries();
398 if (!GraphicsEnvironment.isHeadless()) {
399 initIDs();
400 }
401
402 String s = java.security.AccessController.doPrivileged(
403 new GetPropertyAction("java.awt.syncLWRequests"));
404 systemSyncLWRequests = (s != null && s.equals("true"));
405 s = java.security.AccessController.doPrivileged(
406 new GetPropertyAction("java.awt.Window.locationByPlatform"));
407 locationByPlatformProp = (s != null && s.equals("true"));
408 }
409
410 /**
411 * Initialize JNI field and method IDs for fields that may be
412 accessed from C.
413 */
414 private static native void initIDs();
415
416 /**
417 * Constructs a new, initially invisible window in default size with the
418 * specified {@code GraphicsConfiguration}.
419 * <p>
420 * If there is a security manager, then it is invoked to check
421 * {@code AWTPermission("showWindowWithoutWarningBanner")}
422 * to determine whether or not the window must be displayed with
423 * a warning banner.
424 *
425 * @param gc the {@code GraphicsConfiguration} of the target screen
426 * device. If {@code gc} is {@code null}, the system default
427 * {@code GraphicsConfiguration} is assumed
428 * @exception IllegalArgumentException if {@code gc}
429 * is not from a screen device
430 * @exception HeadlessException when
431 * {@code GraphicsEnvironment.isHeadless()} returns {@code true}
432 *
433 * @see java.awt.GraphicsEnvironment#isHeadless
434 */
435 Window(GraphicsConfiguration gc) {
436 init(gc);
437 }
438
439 transient Object anchor = new Object();
440 static class WindowDisposerRecord implements sun.java2d.DisposerRecord {
441 WeakReference<Window> owner;
442 final WeakReference<Window> weakThis;
443 final WeakReference<AppContext> context;
444
445 WindowDisposerRecord(AppContext context, Window victim) {
446 weakThis = victim.weakThis;
447 this.context = new WeakReference<AppContext>(context);
448 }
449
450 public void updateOwner() {
451 Window victim = weakThis.get();
452 owner = (victim == null)
453 ? null
454 : new WeakReference<Window>(victim.getOwner());
455 }
456
457 public void dispose() {
458 if (owner != null) {
459 Window parent = owner.get();
460 if (parent != null) {
461 parent.removeOwnedWindow(weakThis);
462 }
463 }
464 AppContext ac = context.get();
465 if (null != ac) {
466 Window.removeFromWindowList(ac, weakThis);
467 }
468 }
469 }
470
471 private GraphicsConfiguration initGC(GraphicsConfiguration gc) {
472 GraphicsEnvironment.checkHeadless();
473
474 if (gc == null) {
475 gc = GraphicsEnvironment.getLocalGraphicsEnvironment().
476 getDefaultScreenDevice().getDefaultConfiguration();
477 }
478 setGraphicsConfiguration(gc);
479
480 return gc;
481 }
482
483 private void init(GraphicsConfiguration gc) {
484 GraphicsEnvironment.checkHeadless();
485
486 syncLWRequests = systemSyncLWRequests;
487
488 weakThis = new WeakReference<Window>(this);
489 addToWindowList();
490
491 setWarningString();
492 this.cursor = Cursor.getPredefinedCursor(Cursor.DEFAULT_CURSOR);
493 this.visible = false;
494
495 gc = initGC(gc);
496
497 if (gc.getDevice().getType() !=
498 GraphicsDevice.TYPE_RASTER_SCREEN) {
499 throw new IllegalArgumentException("not a screen device");
500 }
501 setLayout(new BorderLayout());
502
503 /* offset the initial location with the original of the screen */
504 /* and any insets */
505 Rectangle screenBounds = gc.getBounds();
506 Insets screenInsets = getToolkit().getScreenInsets(gc);
507 int x = getX() + screenBounds.x + screenInsets.left;
508 int y = getY() + screenBounds.y + screenInsets.top;
509 if (x != this.x || y != this.y) {
510 setLocation(x, y);
511 /* reset after setLocation */
512 setLocationByPlatform(locationByPlatformProp);
513 }
514
515 modalExclusionType = Dialog.ModalExclusionType.NO_EXCLUDE;
516 disposerRecord = new WindowDisposerRecord(appContext, this);
517 sun.java2d.Disposer.addRecord(anchor, disposerRecord);
518
519 SunToolkit.checkAndSetPolicy(this);
520 }
521
522 /**
523 * Constructs a new, initially invisible window in the default size.
524 * <p>
525 * If there is a security manager set, it is invoked to check
526 * {@code AWTPermission("showWindowWithoutWarningBanner")}.
527 * If that check fails with a {@code SecurityException} then a warning
528 * banner is created.
529 *
530 * @exception HeadlessException when
531 * {@code GraphicsEnvironment.isHeadless()} returns {@code true}
532 *
533 * @see java.awt.GraphicsEnvironment#isHeadless
534 */
535 Window() throws HeadlessException {
536 GraphicsEnvironment.checkHeadless();
537 init((GraphicsConfiguration)null);
538 }
539
540 /**
541 * Constructs a new, initially invisible window with the specified
542 * {@code Frame} as its owner. The window will not be focusable
543 * unless its owner is showing on the screen.
544 * <p>
545 * If there is a security manager set, it is invoked to check
546 * {@code AWTPermission("showWindowWithoutWarningBanner")}.
547 * If that check fails with a {@code SecurityException} then a warning
548 * banner is created.
549 *
550 * @param owner the {@code Frame} to act as owner or {@code null}
551 * if this window has no owner
552 * @exception IllegalArgumentException if the {@code owner}'s
553 * {@code GraphicsConfiguration} is not from a screen device
554 * @exception HeadlessException when
555 * {@code GraphicsEnvironment.isHeadless} returns {@code true}
556 *
557 * @see java.awt.GraphicsEnvironment#isHeadless
558 * @see #isShowing
559 */
560 public Window(Frame owner) {
561 this(owner == null ? (GraphicsConfiguration)null :
562 owner.getGraphicsConfiguration());
563 ownedInit(owner);
564 }
565
566 /**
567 * Constructs a new, initially invisible window with the specified
568 * {@code Window} as its owner. This window will not be focusable
569 * unless its nearest owning {@code Frame} or {@code Dialog}
570 * is showing on the screen.
571 * <p>
572 * If there is a security manager set, it is invoked to check
573 * {@code AWTPermission("showWindowWithoutWarningBanner")}.
574 * If that check fails with a {@code SecurityException} then a
575 * warning banner is created.
576 *
577 * @param owner the {@code Window} to act as owner or
578 * {@code null} if this window has no owner
579 * @exception IllegalArgumentException if the {@code owner}'s
580 * {@code GraphicsConfiguration} is not from a screen device
581 * @exception HeadlessException when
582 * {@code GraphicsEnvironment.isHeadless()} returns
583 * {@code true}
584 *
585 * @see java.awt.GraphicsEnvironment#isHeadless
586 * @see #isShowing
587 *
588 * @since 1.2
589 */
590 public Window(Window owner) {
591 this(owner == null ? (GraphicsConfiguration)null :
592 owner.getGraphicsConfiguration());
593 ownedInit(owner);
594 }
595
596 /**
597 * Constructs a new, initially invisible window with the specified owner
598 * {@code Window} and a {@code GraphicsConfiguration}
599 * of a screen device. The Window will not be focusable unless
600 * its nearest owning {@code Frame} or {@code Dialog}
601 * is showing on the screen.
602 * <p>
603 * If there is a security manager set, it is invoked to check
604 * {@code AWTPermission("showWindowWithoutWarningBanner")}. If that
605 * check fails with a {@code SecurityException} then a warning banner
606 * is created.
607 *
608 * @param owner the window to act as owner or {@code null}
609 * if this window has no owner
610 * @param gc the {@code GraphicsConfiguration} of the target
611 * screen device; if {@code gc} is {@code null},
612 * the system default {@code GraphicsConfiguration} is assumed
613 * @exception IllegalArgumentException if {@code gc}
614 * is not from a screen device
615 * @exception HeadlessException when
616 * {@code GraphicsEnvironment.isHeadless()} returns
617 * {@code true}
618 *
619 * @see java.awt.GraphicsEnvironment#isHeadless
620 * @see GraphicsConfiguration#getBounds
621 * @see #isShowing
622 * @since 1.3
623 */
624 public Window(Window owner, GraphicsConfiguration gc) {
625 this(gc);
626 ownedInit(owner);
627 }
628
629 private void ownedInit(Window owner) {
630 this.parent = owner;
631 if (owner != null) {
632 owner.addOwnedWindow(weakThis);
633 if (owner.isAlwaysOnTop()) {
634 try {
635 setAlwaysOnTop(true);
636 } catch (SecurityException ignore) {
637 }
638 }
639 }
640
641 // WindowDisposerRecord requires a proper value of parent field.
642 disposerRecord.updateOwner();
643 }
644
645 /**
646 * Construct a name for this component. Called by getName() when the
647 * name is null.
648 */
649 String constructComponentName() {
650 synchronized (Window.class) {
651 return base + nameCounter++;
652 }
653 }
654
655 /**
656 * Returns the sequence of images to be displayed as the icon for this window.
657 * <p>
658 * This method returns a copy of the internally stored list, so all operations
659 * on the returned object will not affect the window's behavior.
660 *
661 * @return the copy of icon images' list for this window, or
662 * empty list if this window doesn't have icon images.
663 * @see #setIconImages
664 * @see #setIconImage(Image)
665 * @since 1.6
666 */
667 public java.util.List<Image> getIconImages() {
668 java.util.List<Image> icons = this.icons;
669 if (icons == null || icons.size() == 0) {
670 return new ArrayList<Image>();
671 }
672 return new ArrayList<Image>(icons);
673 }
674
675 /**
676 * Sets the sequence of images to be displayed as the icon
677 * for this window. Subsequent calls to {@code getIconImages} will
678 * always return a copy of the {@code icons} list.
679 * <p>
680 * Depending on the platform capabilities one or several images
681 * of different dimensions will be used as the window's icon.
682 * <p>
683 * The {@code icons} list is scanned for the images of most
684 * appropriate dimensions from the beginning. If the list contains
685 * several images of the same size, the first will be used.
686 * <p>
687 * Ownerless windows with no icon specified use platform-default icon.
688 * The icon of an owned window may be inherited from the owner
689 * unless explicitly overridden.
690 * Setting the icon to {@code null} or empty list restores
691 * the default behavior.
692 * <p>
693 * Note : Native windowing systems may use different images of differing
694 * dimensions to represent a window, depending on the context (e.g.
695 * window decoration, window list, taskbar, etc.). They could also use
696 * just a single image for all contexts or no image at all.
697 *
698 * @param icons the list of icon images to be displayed.
699 * @see #getIconImages()
700 * @see #setIconImage(Image)
701 * @since 1.6
702 */
703 public synchronized void setIconImages(java.util.List<? extends Image> icons) {
704 this.icons = (icons == null) ? new ArrayList<Image>() :
705 new ArrayList<Image>(icons);
706 WindowPeer peer = (WindowPeer)this.peer;
707 if (peer != null) {
708 peer.updateIconImages();
709 }
710 // Always send a property change event
711 firePropertyChange("iconImage", null, null);
712 }
713
714 /**
715 * Sets the image to be displayed as the icon for this window.
716 * <p>
717 * This method can be used instead of {@link #setIconImages setIconImages()}
718 * to specify a single image as a window's icon.
719 * <p>
720 * The following statement:
721 * <pre>
722 * setIconImage(image);
723 * </pre>
724 * is equivalent to:
725 * <pre>
726 * ArrayList<Image> imageList = new ArrayList<Image>();
727 * imageList.add(image);
728 * setIconImages(imageList);
729 * </pre>
730 * <p>
731 * Note : Native windowing systems may use different images of differing
732 * dimensions to represent a window, depending on the context (e.g.
733 * window decoration, window list, taskbar, etc.). They could also use
734 * just a single image for all contexts or no image at all.
735 *
736 * @param image the icon image to be displayed.
737 * @see #setIconImages
738 * @see #getIconImages()
739 * @since 1.6
740 */
741 public void setIconImage(Image image) {
742 ArrayList<Image> imageList = new ArrayList<Image>();
743 if (image != null) {
744 imageList.add(image);
745 }
746 setIconImages(imageList);
747 }
748
749 /**
750 * Makes this Window displayable by creating the connection to its
751 * native screen resource.
752 * This method is called internally by the toolkit and should
753 * not be called directly by programs.
754 * @see Component#isDisplayable
755 * @see Container#removeNotify
756 * @since 1.0
757 */
758 @SuppressWarnings("deprecation")
759 public void addNotify() {
760 synchronized (getTreeLock()) {
761 Container parent = this.parent;
762 if (parent != null && parent.getPeer() == null) {
763 parent.addNotify();
764 }
765 if (peer == null) {
766 peer = getToolkit().createWindow(this);
767 }
768 synchronized (allWindows) {
769 allWindows.add(this);
770 }
771 super.addNotify();
772 }
773 }
774
775 /**
776 * {@inheritDoc}
777 */
778 public void removeNotify() {
779 synchronized (getTreeLock()) {
780 synchronized (allWindows) {
781 allWindows.remove(this);
782 }
783 super.removeNotify();
784 }
785 }
786
787 /**
788 * Causes this Window to be sized to fit the preferred size
789 * and layouts of its subcomponents. The resulting width and
790 * height of the window are automatically enlarged if either
791 * of dimensions is less than the minimum size as specified
792 * by the previous call to the {@code setMinimumSize} method.
793 * <p>
794 * If the window and/or its owner are not displayable yet,
795 * both of them are made displayable before calculating
796 * the preferred size. The Window is validated after its
797 * size is being calculated.
798 *
799 * @see Component#isDisplayable
800 * @see #setMinimumSize
801 */
802 @SuppressWarnings("deprecation")
803 public void pack() {
804 Container parent = this.parent;
805 if (parent != null && parent.getPeer() == null) {
806 parent.addNotify();
807 }
808 if (peer == null) {
809 addNotify();
810 }
811 Dimension newSize = getPreferredSize();
812 if (peer != null) {
813 setClientSize(newSize.width, newSize.height);
814 }
815
816 if(beforeFirstShow) {
817 isPacked = true;
818 }
819
820 validateUnconditionally();
821 }
822
823 /**
824 * Sets the minimum size of this window to a constant
825 * value. Subsequent calls to {@code getMinimumSize}
826 * will always return this value. If current window's
827 * size is less than {@code minimumSize} the size of the
828 * window is automatically enlarged to honor the minimum size.
829 * <p>
830 * If the {@code setSize} or {@code setBounds} methods
831 * are called afterwards with a width or height less than
832 * that was specified by the {@code setMinimumSize} method
833 * the window is automatically enlarged to meet
834 * the {@code minimumSize} value. The {@code minimumSize}
835 * value also affects the behaviour of the {@code pack} method.
836 * <p>
837 * The default behavior is restored by setting the minimum size
838 * parameter to the {@code null} value.
839 * <p>
840 * Resizing operation may be restricted if the user tries
841 * to resize window below the {@code minimumSize} value.
842 * This behaviour is platform-dependent.
843 *
844 * @param minimumSize the new minimum size of this window
845 * @see Component#setMinimumSize
846 * @see #getMinimumSize
847 * @see #isMinimumSizeSet
848 * @see #setSize(Dimension)
849 * @see #pack
850 * @since 1.6
851 */
852 public void setMinimumSize(Dimension minimumSize) {
853 synchronized (getTreeLock()) {
854 super.setMinimumSize(minimumSize);
855 Dimension size = getSize();
856 if (isMinimumSizeSet()) {
857 if (size.width < minimumSize.width || size.height < minimumSize.height) {
858 int nw = Math.max(width, minimumSize.width);
859 int nh = Math.max(height, minimumSize.height);
860 setSize(nw, nh);
861 }
862 }
863 if (peer != null) {
864 ((WindowPeer)peer).updateMinimumSize();
865 }
866 }
867 }
868
869 /**
870 * {@inheritDoc}
871 * <p>
872 * The {@code d.width} and {@code d.height} values
873 * are automatically enlarged if either is less than
874 * the minimum size as specified by previous call to
875 * {@code setMinimumSize}.
876 * <p>
877 * The method changes the geometry-related data. Therefore,
878 * the native windowing system may ignore such requests, or it may modify
879 * the requested data, so that the {@code Window} object is placed and sized
880 * in a way that corresponds closely to the desktop settings.
881 *
882 * @see #getSize
883 * @see #setBounds
884 * @see #setMinimumSize
885 * @since 1.6
886 */
887 public void setSize(Dimension d) {
888 super.setSize(d);
889 }
890
891 /**
892 * {@inheritDoc}
893 * <p>
894 * The {@code width} and {@code height} values
895 * are automatically enlarged if either is less than
896 * the minimum size as specified by previous call to
897 * {@code setMinimumSize}.
898 * <p>
899 * The method changes the geometry-related data. Therefore,
900 * the native windowing system may ignore such requests, or it may modify
901 * the requested data, so that the {@code Window} object is placed and sized
902 * in a way that corresponds closely to the desktop settings.
903 *
904 * @see #getSize
905 * @see #setBounds
906 * @see #setMinimumSize
907 * @since 1.6
908 */
909 public void setSize(int width, int height) {
910 super.setSize(width, height);
911 }
912
913 /**
914 * {@inheritDoc}
915 * <p>
916 * The method changes the geometry-related data. Therefore,
917 * the native windowing system may ignore such requests, or it may modify
918 * the requested data, so that the {@code Window} object is placed and sized
919 * in a way that corresponds closely to the desktop settings.
920 */
921 @Override
922 public void setLocation(int x, int y) {
923 super.setLocation(x, y);
924 }
925
926 /**
927 * {@inheritDoc}
928 * <p>
929 * The method changes the geometry-related data. Therefore,
930 * the native windowing system may ignore such requests, or it may modify
931 * the requested data, so that the {@code Window} object is placed and sized
932 * in a way that corresponds closely to the desktop settings.
933 */
934 @Override
935 public void setLocation(Point p) {
936 super.setLocation(p);
937 }
938
939 /**
940 * @deprecated As of JDK version 1.1,
941 * replaced by {@code setBounds(int, int, int, int)}.
942 */
943 @Deprecated
944 public void reshape(int x, int y, int width, int height) {
945 if (isMinimumSizeSet()) {
946 Dimension minSize = getMinimumSize();
947 if (width < minSize.width) {
948 width = minSize.width;
949 }
950 if (height < minSize.height) {
951 height = minSize.height;
952 }
953 }
954 super.reshape(x, y, width, height);
955 }
956
957 void setClientSize(int w, int h) {
958 synchronized (getTreeLock()) {
959 setBoundsOp(ComponentPeer.SET_CLIENT_SIZE);
960 setBounds(x, y, w, h);
961 }
962 }
963
964 static private final AtomicBoolean
965 beforeFirstWindowShown = new AtomicBoolean(true);
966
967 final void closeSplashScreen() {
968 if (isTrayIconWindow) {
969 return;
970 }
971 if (beforeFirstWindowShown.getAndSet(false)) {
972 // We don't use SplashScreen.getSplashScreen() to avoid instantiating
973 // the object if it hasn't been requested by user code explicitly
974 SunToolkit.closeSplashScreen();
975 SplashScreen.markClosed();
976 }
977 }
978
979 /**
980 * Shows or hides this {@code Window} depending on the value of parameter
981 * {@code b}.
982 * <p>
983 * If the method shows the window then the window is also made
984 * focused under the following conditions:
985 * <ul>
986 * <li> The {@code Window} meets the requirements outlined in the
987 * {@link #isFocusableWindow} method.
988 * <li> The {@code Window}'s {@code autoRequestFocus} property is of the {@code true} value.
989 * <li> Native windowing system allows the {@code Window} to get focused.
990 * </ul>
991 * There is an exception for the second condition (the value of the
992 * {@code autoRequestFocus} property). The property is not taken into account if the
993 * window is a modal dialog, which blocks the currently focused window.
994 * <p>
995 * Developers must never assume that the window is the focused or active window
996 * until it receives a WINDOW_GAINED_FOCUS or WINDOW_ACTIVATED event.
997 * @param b if {@code true}, makes the {@code Window} visible,
998 * otherwise hides the {@code Window}.
999 * If the {@code Window} and/or its owner
1000 * are not yet displayable, both are made displayable. The
1001 * {@code Window} will be validated prior to being made visible.
1002 * If the {@code Window} is already visible, this will bring the
1003 * {@code Window} to the front.<p>
1004 * If {@code false}, hides this {@code Window}, its subcomponents, and all
1005 * of its owned children.
1006 * The {@code Window} and its subcomponents can be made visible again
1007 * with a call to {@code #setVisible(true)}.
1008 * @see java.awt.Component#isDisplayable
1009 * @see java.awt.Component#setVisible
1010 * @see java.awt.Window#toFront
1011 * @see java.awt.Window#dispose
1012 * @see java.awt.Window#setAutoRequestFocus
1013 * @see java.awt.Window#isFocusableWindow
1014 */
1015 public void setVisible(boolean b) {
1016 super.setVisible(b);
1017 }
1018
1019 /**
1020 * Makes the Window visible. If the Window and/or its owner
1021 * are not yet displayable, both are made displayable. The
1022 * Window will be validated prior to being made visible.
1023 * If the Window is already visible, this will bring the Window
1024 * to the front.
1025 * @see Component#isDisplayable
1026 * @see #toFront
1027 * @deprecated As of JDK version 1.5, replaced by
1028 * {@link #setVisible(boolean)}.
1029 */
1030 @Deprecated
1031 public void show() {
1032 if (peer == null) {
1033 addNotify();
1034 }
1035 validateUnconditionally();
1036
1037 isInShow = true;
1038 if (visible) {
1039 toFront();
1040 } else {
1041 beforeFirstShow = false;
1042 closeSplashScreen();
1043 Dialog.checkShouldBeBlocked(this);
1044 super.show();
1045 synchronized (getTreeLock()) {
1046 this.locationByPlatform = false;
1047 }
1048 for (int i = 0; i < ownedWindowList.size(); i++) {
1049 Window child = ownedWindowList.elementAt(i).get();
1050 if ((child != null) && child.showWithParent) {
1051 child.show();
1052 child.showWithParent = false;
1053 } // endif
1054 } // endfor
1055 if (!isModalBlocked()) {
1056 updateChildrenBlocking();
1057 } else {
1058 // fix for 6532736: after this window is shown, its blocker
1059 // should be raised to front
1060 modalBlocker.toFront_NoClientCode();
1061 }
1062 if (this instanceof Frame || this instanceof Dialog) {
1063 updateChildFocusableWindowState(this);
1064 }
1065 }
1066 isInShow = false;
1067
1068 // If first time shown, generate WindowOpened event
1069 if ((state & OPENED) == 0) {
1070 postWindowEvent(WindowEvent.WINDOW_OPENED);
1071 state |= OPENED;
1072 }
1073 }
1074
1075 @SuppressWarnings("deprecation")
1076 static void updateChildFocusableWindowState(Window w) {
1077 if (w.getPeer() != null && w.isShowing()) {
1078 ((WindowPeer)w.getPeer()).updateFocusableWindowState();
1079 }
1080 for (int i = 0; i < w.ownedWindowList.size(); i++) {
1081 Window child = w.ownedWindowList.elementAt(i).get();
1082 if (child != null) {
1083 updateChildFocusableWindowState(child);
1084 }
1085 }
1086 }
1087
1088 synchronized void postWindowEvent(int id) {
1089 if (windowListener != null
1090 || (eventMask & AWTEvent.WINDOW_EVENT_MASK) != 0
1091 || Toolkit.enabledOnToolkit(AWTEvent.WINDOW_EVENT_MASK)) {
1092 WindowEvent e = new WindowEvent(this, id);
1093 Toolkit.getEventQueue().postEvent(e);
1094 }
1095 }
1096
1097 /**
1098 * Hide this Window, its subcomponents, and all of its owned children.
1099 * The Window and its subcomponents can be made visible again
1100 * with a call to {@code show}.
1101 * @see #show
1102 * @see #dispose
1103 * @deprecated As of JDK version 1.5, replaced by
1104 * {@link #setVisible(boolean)}.
1105 */
1106 @Deprecated
1107 public void hide() {
1108 synchronized(ownedWindowList) {
1109 for (int i = 0; i < ownedWindowList.size(); i++) {
1110 Window child = ownedWindowList.elementAt(i).get();
1111 if ((child != null) && child.visible) {
1112 child.hide();
1113 child.showWithParent = true;
1114 }
1115 }
1116 }
1117 if (isModalBlocked()) {
1118 modalBlocker.unblockWindow(this);
1119 }
1120 super.hide();
1121 synchronized (getTreeLock()) {
1122 this.locationByPlatform = false;
1123 }
1124 }
1125
1126 final void clearMostRecentFocusOwnerOnHide() {
1127 /* do nothing */
1128 }
1129
1130 /**
1131 * Releases all of the native screen resources used by this
1132 * {@code Window}, its subcomponents, and all of its owned
1133 * children. That is, the resources for these {@code Component}s
1134 * will be destroyed, any memory they consume will be returned to the
1135 * OS, and they will be marked as undisplayable.
1136 * <p>
1137 * The {@code Window} and its subcomponents can be made displayable
1138 * again by rebuilding the native resources with a subsequent call to
1139 * {@code pack} or {@code show}. The states of the recreated
1140 * {@code Window} and its subcomponents will be identical to the
1141 * states of these objects at the point where the {@code Window}
1142 * was disposed (not accounting for additional modifications between
1143 * those actions).
1144 * <p>
1145 * <b>Note</b>: When the last displayable window
1146 * within the Java virtual machine (VM) is disposed of, the VM may
1147 * terminate. See <a href="doc-files/AWTThreadIssues.html#Autoshutdown">
1148 * AWT Threading Issues</a> for more information.
1149 * @see Component#isDisplayable
1150 * @see #pack
1151 * @see #show
1152 */
1153 public void dispose() {
1154 doDispose();
1155 }
1156
1157 /*
1158 * Fix for 4872170.
1159 * If dispose() is called on parent then its children have to be disposed as well
1160 * as reported in javadoc. So we need to implement this functionality even if a
1161 * child overrides dispose() in a wrong way without calling super.dispose().
1162 */
1163 @SuppressWarnings("deprecation")
1164 void disposeImpl() {
1165 dispose();
1166 if (getPeer() != null) {
1167 doDispose();
1168 }
1169 }
1170
1171 void doDispose() {
1172 class DisposeAction implements Runnable {
1173 public void run() {
1174 disposing = true;
1175 try {
1176 // Check if this window is the fullscreen window for the
1177 // device. Exit the fullscreen mode prior to disposing
1178 // of the window if that's the case.
1179 GraphicsDevice gd = getGraphicsConfiguration().getDevice();
1180 if (gd.getFullScreenWindow() == Window.this) {
1181 gd.setFullScreenWindow(null);
1182 }
1183
1184 Object[] ownedWindowArray;
1185 synchronized(ownedWindowList) {
1186 ownedWindowArray = new Object[ownedWindowList.size()];
1187 ownedWindowList.copyInto(ownedWindowArray);
1188 }
1189 for (int i = 0; i < ownedWindowArray.length; i++) {
1190 Window child = (Window) (((WeakReference)
1191 (ownedWindowArray[i])).get());
1192 if (child != null) {
1193 child.disposeImpl();
1194 }
1195 }
1196 hide();
1197 beforeFirstShow = true;
1198 removeNotify();
1199 synchronized (inputContextLock) {
1200 if (inputContext != null) {
1201 inputContext.dispose();
1202 inputContext = null;
1203 }
1204 }
1205 clearCurrentFocusCycleRootOnHide();
1206 } finally {
1207 disposing = false;
1208 }
1209 }
1210 }
1211 boolean fireWindowClosedEvent = isDisplayable();
1212 DisposeAction action = new DisposeAction();
1213 if (EventQueue.isDispatchThread()) {
1214 action.run();
1215 }
1216 else {
1217 try {
1218 EventQueue.invokeAndWait(this, action);
1219 }
1220 catch (InterruptedException e) {
1221 System.err.println("Disposal was interrupted:");
1222 e.printStackTrace();
1223 }
1224 catch (InvocationTargetException e) {
1225 System.err.println("Exception during disposal:");
1226 e.printStackTrace();
1227 }
1228 }
1229 // Execute outside the Runnable because postWindowEvent is
1230 // synchronized on (this). We don't need to synchronize the call
1231 // on the EventQueue anyways.
1232 if (fireWindowClosedEvent) {
1233 postWindowEvent(WindowEvent.WINDOW_CLOSED);
1234 }
1235 }
1236
1237 /*
1238 * Should only be called while holding the tree lock.
1239 * It's overridden here because parent == owner in Window,
1240 * and we shouldn't adjust counter on owner
1241 */
1242 void adjustListeningChildrenOnParent(long mask, int num) {
1243 }
1244
1245 // Should only be called while holding tree lock
1246 void adjustDescendantsOnParent(int num) {
1247 // do nothing since parent == owner and we shouldn't
1248 // adjust counter on owner
1249 }
1250
1251 /**
1252 * If this Window is visible, brings this Window to the front and may make
1253 * it the focused Window.
1254 * <p>
1255 * Places this Window at the top of the stacking order and shows it in
1256 * front of any other Windows in this VM. No action will take place if this
1257 * Window is not visible. Some platforms do not allow Windows which own
1258 * other Windows to appear on top of those owned Windows. Some platforms
1259 * may not permit this VM to place its Windows above windows of native
1260 * applications, or Windows of other VMs. This permission may depend on
1261 * whether a Window in this VM is already focused. Every attempt will be
1262 * made to move this Window as high as possible in the stacking order;
1263 * however, developers should not assume that this method will move this
1264 * Window above all other windows in every situation.
1265 * <p>
1266 * Developers must never assume that this Window is the focused or active
1267 * Window until this Window receives a WINDOW_GAINED_FOCUS or WINDOW_ACTIVATED
1268 * event. On platforms where the top-most window is the focused window, this
1269 * method will <b>probably</b> focus this Window (if it is not already focused)
1270 * under the following conditions:
1271 * <ul>
1272 * <li> The window meets the requirements outlined in the
1273 * {@link #isFocusableWindow} method.
1274 * <li> The window's property {@code autoRequestFocus} is of the
1275 * {@code true} value.
1276 * <li> Native windowing system allows the window to get focused.
1277 * </ul>
1278 * On platforms where the stacking order does not typically affect the focused
1279 * window, this method will <b>probably</b> leave the focused and active
1280 * Windows unchanged.
1281 * <p>
1282 * If this method causes this Window to be focused, and this Window is a
1283 * Frame or a Dialog, it will also become activated. If this Window is
1284 * focused, but it is not a Frame or a Dialog, then the first Frame or
1285 * Dialog that is an owner of this Window will be activated.
1286 * <p>
1287 * If this window is blocked by modal dialog, then the blocking dialog
1288 * is brought to the front and remains above the blocked window.
1289 *
1290 * @see #toBack
1291 * @see #setAutoRequestFocus
1292 * @see #isFocusableWindow
1293 */
1294 public void toFront() {
1295 toFront_NoClientCode();
1296 }
1297
1298 // This functionality is implemented in a final package-private method
1299 // to insure that it cannot be overridden by client subclasses.
1300 final void toFront_NoClientCode() {
1301 if (visible) {
1302 WindowPeer peer = (WindowPeer)this.peer;
1303 if (peer != null) {
1304 peer.toFront();
1305 }
1306 if (isModalBlocked()) {
1307 modalBlocker.toFront_NoClientCode();
1308 }
1309 }
1310 }
1311
1312 /**
1313 * If this Window is visible, sends this Window to the back and may cause
1314 * it to lose focus or activation if it is the focused or active Window.
1315 * <p>
1316 * Places this Window at the bottom of the stacking order and shows it
1317 * behind any other Windows in this VM. No action will take place is this
1318 * Window is not visible. Some platforms do not allow Windows which are
1319 * owned by other Windows to appear below their owners. Every attempt will
1320 * be made to move this Window as low as possible in the stacking order;
1321 * however, developers should not assume that this method will move this
1322 * Window below all other windows in every situation.
1323 * <p>
1324 * Because of variations in native windowing systems, no guarantees about
1325 * changes to the focused and active Windows can be made. Developers must
1326 * never assume that this Window is no longer the focused or active Window
1327 * until this Window receives a WINDOW_LOST_FOCUS or WINDOW_DEACTIVATED
1328 * event. On platforms where the top-most window is the focused window,
1329 * this method will <b>probably</b> cause this Window to lose focus. In
1330 * that case, the next highest, focusable Window in this VM will receive
1331 * focus. On platforms where the stacking order does not typically affect
1332 * the focused window, this method will <b>probably</b> leave the focused
1333 * and active Windows unchanged.
1334 *
1335 * @see #toFront
1336 */
1337 public void toBack() {
1338 toBack_NoClientCode();
1339 }
1340
1341 // This functionality is implemented in a final package-private method
1342 // to insure that it cannot be overridden by client subclasses.
1343 final void toBack_NoClientCode() {
1344 if(isAlwaysOnTop()) {
1345 try {
1346 setAlwaysOnTop(false);
1347 }catch(SecurityException e) {
1348 }
1349 }
1350 if (visible) {
1351 WindowPeer peer = (WindowPeer)this.peer;
1352 if (peer != null) {
1353 peer.toBack();
1354 }
1355 }
1356 }
1357
1358 /**
1359 * Returns the toolkit of this frame.
1360 * @return the toolkit of this window.
1361 * @see Toolkit
1362 * @see Toolkit#getDefaultToolkit
1363 * @see Component#getToolkit
1364 */
1365 public Toolkit getToolkit() {
1366 return Toolkit.getDefaultToolkit();
1367 }
1368
1369 /**
1370 * Gets the warning string that is displayed with this window.
1371 * If this window is insecure, the warning string is displayed
1372 * somewhere in the visible area of the window. A window is
1373 * insecure if there is a security manager and the security
1374 * manager denies
1375 * {@code AWTPermission("showWindowWithoutWarningBanner")}.
1376 * <p>
1377 * If the window is secure, then {@code getWarningString}
1378 * returns {@code null}. If the window is insecure, this
1379 * method checks for the system property
1380 * {@code awt.appletWarning}
1381 * and returns the string value of that property.
1382 * @return the warning string for this window.
1383 */
1384 public final String getWarningString() {
1385 return warningString;
1386 }
1387
1388 private void setWarningString() {
1389 warningString = null;
1390 SecurityManager sm = System.getSecurityManager();
1391 if (sm != null) {
1392 try {
1393 sm.checkPermission(AWTPermissions.TOPLEVEL_WINDOW_PERMISSION);
1394 } catch (SecurityException se) {
1395 // make sure the privileged action is only
1396 // for getting the property! We don't want the
1397 // above checkPermission call to always succeed!
1398 warningString = AccessController.doPrivileged(
1399 new GetPropertyAction("awt.appletWarning",
1400 "Java Applet Window"));
1401 }
1402 }
1403 }
1404
1405 /**
1406 * Gets the {@code Locale} object that is associated
1407 * with this window, if the locale has been set.
1408 * If no locale has been set, then the default locale
1409 * is returned.
1410 * @return the locale that is set for this window.
1411 * @see java.util.Locale
1412 * @since 1.1
1413 */
1414 public Locale getLocale() {
1415 if (this.locale == null) {
1416 return Locale.getDefault();
1417 }
1418 return this.locale;
1419 }
1420
1421 /**
1422 * Gets the input context for this window. A window always has an input context,
1423 * which is shared by subcomponents unless they create and set their own.
1424 * @see Component#getInputContext
1425 * @since 1.2
1426 */
1427 public InputContext getInputContext() {
1428 synchronized (inputContextLock) {
1429 if (inputContext == null) {
1430 inputContext = InputContext.getInstance();
1431 }
1432 }
1433 return inputContext;
1434 }
1435
1436 /**
1437 * Set the cursor image to a specified cursor.
1438 * <p>
1439 * The method may have no visual effect if the Java platform
1440 * implementation and/or the native system do not support
1441 * changing the mouse cursor shape.
1442 * @param cursor One of the constants defined
1443 * by the {@code Cursor} class. If this parameter is null
1444 * then the cursor for this window will be set to the type
1445 * Cursor.DEFAULT_CURSOR.
1446 * @see Component#getCursor
1447 * @see Cursor
1448 * @since 1.1
1449 */
1450 public void setCursor(Cursor cursor) {
1451 if (cursor == null) {
1452 cursor = Cursor.getPredefinedCursor(Cursor.DEFAULT_CURSOR);
1453 }
1454 super.setCursor(cursor);
1455 }
1456
1457 /**
1458 * Returns the owner of this window.
1459 *
1460 * @return the owner of this window
1461 * @since 1.2
1462 */
1463 public Window getOwner() {
1464 return getOwner_NoClientCode();
1465 }
1466 final Window getOwner_NoClientCode() {
1467 return (Window)parent;
1468 }
1469
1470 /**
1471 * Return an array containing all the windows this
1472 * window currently owns.
1473 *
1474 * @return the array of all the owned windows
1475 * @since 1.2
1476 */
1477 public Window[] getOwnedWindows() {
1478 return getOwnedWindows_NoClientCode();
1479 }
1480 final Window[] getOwnedWindows_NoClientCode() {
1481 Window realCopy[];
1482
1483 synchronized(ownedWindowList) {
1484 // Recall that ownedWindowList is actually a Vector of
1485 // WeakReferences and calling get() on one of these references
1486 // may return null. Make two arrays-- one the size of the
1487 // Vector (fullCopy with size fullSize), and one the size of
1488 // all non-null get()s (realCopy with size realSize).
1489 int fullSize = ownedWindowList.size();
1490 int realSize = 0;
1491 Window fullCopy[] = new Window[fullSize];
1492
1493 for (int i = 0; i < fullSize; i++) {
1494 fullCopy[realSize] = ownedWindowList.elementAt(i).get();
1495
1496 if (fullCopy[realSize] != null) {
1497 realSize++;
1498 }
1499 }
1500
1501 if (fullSize != realSize) {
1502 realCopy = Arrays.copyOf(fullCopy, realSize);
1503 } else {
1504 realCopy = fullCopy;
1505 }
1506 }
1507
1508 return realCopy;
1509 }
1510
1511 boolean isModalBlocked() {
1512 return modalBlocker != null;
1513 }
1514
1515 void setModalBlocked(Dialog blocker, boolean blocked, boolean peerCall) {
1516 this.modalBlocker = blocked ? blocker : null;
1517 if (peerCall) {
1518 WindowPeer peer = (WindowPeer)this.peer;
1519 if (peer != null) {
1520 peer.setModalBlocked(blocker, blocked);
1521 }
1522 }
1523 }
1524
1525 Dialog getModalBlocker() {
1526 return modalBlocker;
1527 }
1528
1529 /*
1530 * Returns a list of all displayable Windows, i. e. all the
1531 * Windows which peer is not null.
1532 *
1533 * @see #addNotify
1534 * @see #removeNotify
1535 */
1536 static IdentityArrayList<Window> getAllWindows() {
1537 synchronized (allWindows) {
1538 IdentityArrayList<Window> v = new IdentityArrayList<Window>();
1539 v.addAll(allWindows);
1540 return v;
1541 }
1542 }
1543
1544 static IdentityArrayList<Window> getAllUnblockedWindows() {
1545 synchronized (allWindows) {
1546 IdentityArrayList<Window> unblocked = new IdentityArrayList<Window>();
1547 for (int i = 0; i < allWindows.size(); i++) {
1548 Window w = allWindows.get(i);
1549 if (!w.isModalBlocked()) {
1550 unblocked.add(w);
1551 }
1552 }
1553 return unblocked;
1554 }
1555 }
1556
1557 private static Window[] getWindows(AppContext appContext) {
1558 synchronized (Window.class) {
1559 Window realCopy[];
1560 @SuppressWarnings("unchecked")
1561 Vector<WeakReference<Window>> windowList =
1562 (Vector<WeakReference<Window>>)appContext.get(Window.class);
1563 if (windowList != null) {
1564 int fullSize = windowList.size();
1565 int realSize = 0;
1566 Window fullCopy[] = new Window[fullSize];
1567 for (int i = 0; i < fullSize; i++) {
1568 Window w = windowList.get(i).get();
1569 if (w != null) {
1570 fullCopy[realSize++] = w;
1571 }
1572 }
1573 if (fullSize != realSize) {
1574 realCopy = Arrays.copyOf(fullCopy, realSize);
1575 } else {
1576 realCopy = fullCopy;
1577 }
1578 } else {
1579 realCopy = new Window[0];
1580 }
1581 return realCopy;
1582 }
1583 }
1584
1585 /**
1586 * Returns an array of all {@code Window}s, both owned and ownerless,
1587 * created by this application.
1588 * If called from an applet, the array includes only the {@code Window}s
1589 * accessible by that applet.
1590 * <p>
1591 * <b>Warning:</b> this method may return system created windows, such
1592 * as a print dialog. Applications should not assume the existence of
1593 * these dialogs, nor should an application assume anything about these
1594 * dialogs such as component positions, {@code LayoutManager}s
1595 * or serialization.
1596 *
1597 * @return the array of all the {@code Window}s created by the application
1598 * @see Frame#getFrames
1599 * @see Window#getOwnerlessWindows
1600 *
1601 * @since 1.6
1602 */
1603 public static Window[] getWindows() {
1604 return getWindows(AppContext.getAppContext());
1605 }
1606
1607 /**
1608 * Returns an array of all {@code Window}s created by this application
1609 * that have no owner. They include {@code Frame}s and ownerless
1610 * {@code Dialog}s and {@code Window}s.
1611 * If called from an applet, the array includes only the {@code Window}s
1612 * accessible by that applet.
1613 * <p>
1614 * <b>Warning:</b> this method may return system created windows, such
1615 * as a print dialog. Applications should not assume the existence of
1616 * these dialogs, nor should an application assume anything about these
1617 * dialogs such as component positions, {@code LayoutManager}s
1618 * or serialization.
1619 *
1620 * @return the array of all the ownerless {@code Window}s
1621 * created by this application
1622 * @see Frame#getFrames
1623 * @see Window#getWindows()
1624 *
1625 * @since 1.6
1626 */
1627 public static Window[] getOwnerlessWindows() {
1628 Window[] allWindows = Window.getWindows();
1629
1630 int ownerlessCount = 0;
1631 for (Window w : allWindows) {
1632 if (w.getOwner() == null) {
1633 ownerlessCount++;
1634 }
1635 }
1636
1637 Window[] ownerless = new Window[ownerlessCount];
1638 int c = 0;
1639 for (Window w : allWindows) {
1640 if (w.getOwner() == null) {
1641 ownerless[c++] = w;
1642 }
1643 }
1644
1645 return ownerless;
1646 }
1647
1648 Window getDocumentRoot() {
1649 synchronized (getTreeLock()) {
1650 Window w = this;
1651 while (w.getOwner() != null) {
1652 w = w.getOwner();
1653 }
1654 return w;
1655 }
1656 }
1657
1658 /**
1659 * Specifies the modal exclusion type for this window. If a window is modal
1660 * excluded, it is not blocked by some modal dialogs. See {@link
1661 * java.awt.Dialog.ModalExclusionType Dialog.ModalExclusionType} for
1662 * possible modal exclusion types.
1663 * <p>
1664 * If the given type is not supported, {@code NO_EXCLUDE} is used.
1665 * <p>
1666 * Note: changing the modal exclusion type for a visible window may have no
1667 * effect until it is hidden and then shown again.
1668 *
1669 * @param exclusionType the modal exclusion type for this window; a {@code null}
1670 * value is equivalent to {@link Dialog.ModalExclusionType#NO_EXCLUDE
1671 * NO_EXCLUDE}
1672 * @throws SecurityException if the calling thread does not have permission
1673 * to set the modal exclusion property to the window with the given
1674 * {@code exclusionType}
1675 * @see java.awt.Dialog.ModalExclusionType
1676 * @see java.awt.Window#getModalExclusionType
1677 * @see java.awt.Toolkit#isModalExclusionTypeSupported
1678 *
1679 * @since 1.6
1680 */
1681 public void setModalExclusionType(Dialog.ModalExclusionType exclusionType) {
1682 if (exclusionType == null) {
1683 exclusionType = Dialog.ModalExclusionType.NO_EXCLUDE;
1684 }
1685 if (!Toolkit.getDefaultToolkit().isModalExclusionTypeSupported(exclusionType)) {
1686 exclusionType = Dialog.ModalExclusionType.NO_EXCLUDE;
1687 }
1688 if (modalExclusionType == exclusionType) {
1689 return;
1690 }
1691 if (exclusionType == Dialog.ModalExclusionType.TOOLKIT_EXCLUDE) {
1692 SecurityManager sm = System.getSecurityManager();
1693 if (sm != null) {
1694 sm.checkPermission(AWTPermissions.TOOLKIT_MODALITY_PERMISSION);
1695 }
1696 }
1697 modalExclusionType = exclusionType;
1698
1699 // if we want on-fly changes, we need to uncomment the lines below
1700 // and override the method in Dialog to use modalShow() instead
1701 // of updateChildrenBlocking()
1702 /*
1703 if (isModalBlocked()) {
1704 modalBlocker.unblockWindow(this);
1705 }
1706 Dialog.checkShouldBeBlocked(this);
1707 updateChildrenBlocking();
1708 */
1709 }
1710
1711 /**
1712 * Returns the modal exclusion type of this window.
1713 *
1714 * @return the modal exclusion type of this window
1715 *
1716 * @see java.awt.Dialog.ModalExclusionType
1717 * @see java.awt.Window#setModalExclusionType
1718 *
1719 * @since 1.6
1720 */
1721 public Dialog.ModalExclusionType getModalExclusionType() {
1722 return modalExclusionType;
1723 }
1724
1725 boolean isModalExcluded(Dialog.ModalExclusionType exclusionType) {
1726 if ((modalExclusionType != null) &&
1727 modalExclusionType.compareTo(exclusionType) >= 0)
1728 {
1729 return true;
1730 }
1731 Window owner = getOwner_NoClientCode();
1732 return (owner != null) && owner.isModalExcluded(exclusionType);
1733 }
1734
1735 void updateChildrenBlocking() {
1736 Vector<Window> childHierarchy = new Vector<Window>();
1737 Window[] ownedWindows = getOwnedWindows();
1738 for (int i = 0; i < ownedWindows.length; i++) {
1739 childHierarchy.add(ownedWindows[i]);
1740 }
1741 int k = 0;
1742 while (k < childHierarchy.size()) {
1743 Window w = childHierarchy.get(k);
1744 if (w.isVisible()) {
1745 if (w.isModalBlocked()) {
1746 Dialog blocker = w.getModalBlocker();
1747 blocker.unblockWindow(w);
1748 }
1749 Dialog.checkShouldBeBlocked(w);
1750 Window[] wOwned = w.getOwnedWindows();
1751 for (int j = 0; j < wOwned.length; j++) {
1752 childHierarchy.add(wOwned[j]);
1753 }
1754 }
1755 k++;
1756 }
1757 }
1758
1759 /**
1760 * Adds the specified window listener to receive window events from
1761 * this window.
1762 * If l is null, no exception is thrown and no action is performed.
1763 * <p>Refer to <a href="doc-files/AWTThreadIssues.html#ListenersThreads"
1764 * >AWT Threading Issues</a> for details on AWT's threading model.
1765 *
1766 * @param l the window listener
1767 * @see #removeWindowListener
1768 * @see #getWindowListeners
1769 */
1770 public synchronized void addWindowListener(WindowListener l) {
1771 if (l == null) {
1772 return;
1773 }
1774 newEventsOnly = true;
1775 windowListener = AWTEventMulticaster.add(windowListener, l);
1776 }
1777
1778 /**
1779 * Adds the specified window state listener to receive window
1780 * events from this window. If {@code l} is {@code null},
1781 * no exception is thrown and no action is performed.
1782 * <p>Refer to <a href="doc-files/AWTThreadIssues.html#ListenersThreads"
1783 * >AWT Threading Issues</a> for details on AWT's threading model.
1784 *
1785 * @param l the window state listener
1786 * @see #removeWindowStateListener
1787 * @see #getWindowStateListeners
1788 * @since 1.4
1789 */
1790 public synchronized void addWindowStateListener(WindowStateListener l) {
1791 if (l == null) {
1792 return;
1793 }
1794 windowStateListener = AWTEventMulticaster.add(windowStateListener, l);
1795 newEventsOnly = true;
1796 }
1797
1798 /**
1799 * Adds the specified window focus listener to receive window events
1800 * from this window.
1801 * If l is null, no exception is thrown and no action is performed.
1802 * <p>Refer to <a href="doc-files/AWTThreadIssues.html#ListenersThreads"
1803 * >AWT Threading Issues</a> for details on AWT's threading model.
1804 *
1805 * @param l the window focus listener
1806 * @see #removeWindowFocusListener
1807 * @see #getWindowFocusListeners
1808 * @since 1.4
1809 */
1810 public synchronized void addWindowFocusListener(WindowFocusListener l) {
1811 if (l == null) {
1812 return;
1813 }
1814 windowFocusListener = AWTEventMulticaster.add(windowFocusListener, l);
1815 newEventsOnly = true;
1816 }
1817
1818 /**
1819 * Removes the specified window listener so that it no longer
1820 * receives window events from this window.
1821 * If l is null, no exception is thrown and no action is performed.
1822 * <p>Refer to <a href="doc-files/AWTThreadIssues.html#ListenersThreads"
1823 * >AWT Threading Issues</a> for details on AWT's threading model.
1824 *
1825 * @param l the window listener
1826 * @see #addWindowListener
1827 * @see #getWindowListeners
1828 */
1829 public synchronized void removeWindowListener(WindowListener l) {
1830 if (l == null) {
1831 return;
1832 }
1833 windowListener = AWTEventMulticaster.remove(windowListener, l);
1834 }
1835
1836 /**
1837 * Removes the specified window state listener so that it no
1838 * longer receives window events from this window. If
1839 * {@code l} is {@code null}, no exception is thrown and
1840 * no action is performed.
1841 * <p>Refer to <a href="doc-files/AWTThreadIssues.html#ListenersThreads"
1842 * >AWT Threading Issues</a> for details on AWT's threading model.
1843 *
1844 * @param l the window state listener
1845 * @see #addWindowStateListener
1846 * @see #getWindowStateListeners
1847 * @since 1.4
1848 */
1849 public synchronized void removeWindowStateListener(WindowStateListener l) {
1850 if (l == null) {
1851 return;
1852 }
1853 windowStateListener = AWTEventMulticaster.remove(windowStateListener, l);
1854 }
1855
1856 /**
1857 * Removes the specified window focus listener so that it no longer
1858 * receives window events from this window.
1859 * If l is null, no exception is thrown and no action is performed.
1860 * <p>Refer to <a href="doc-files/AWTThreadIssues.html#ListenersThreads"
1861 * >AWT Threading Issues</a> for details on AWT's threading model.
1862 *
1863 * @param l the window focus listener
1864 * @see #addWindowFocusListener
1865 * @see #getWindowFocusListeners
1866 * @since 1.4
1867 */
1868 public synchronized void removeWindowFocusListener(WindowFocusListener l) {
1869 if (l == null) {
1870 return;
1871 }
1872 windowFocusListener = AWTEventMulticaster.remove(windowFocusListener, l);
1873 }
1874
1875 /**
1876 * Returns an array of all the window listeners
1877 * registered on this window.
1878 *
1879 * @return all of this window's {@code WindowListener}s
1880 * or an empty array if no window
1881 * listeners are currently registered
1882 *
1883 * @see #addWindowListener
1884 * @see #removeWindowListener
1885 * @since 1.4
1886 */
1887 public synchronized WindowListener[] getWindowListeners() {
1888 return getListeners(WindowListener.class);
1889 }
1890
1891 /**
1892 * Returns an array of all the window focus listeners
1893 * registered on this window.
1894 *
1895 * @return all of this window's {@code WindowFocusListener}s
1896 * or an empty array if no window focus
1897 * listeners are currently registered
1898 *
1899 * @see #addWindowFocusListener
1900 * @see #removeWindowFocusListener
1901 * @since 1.4
1902 */
1903 public synchronized WindowFocusListener[] getWindowFocusListeners() {
1904 return getListeners(WindowFocusListener.class);
1905 }
1906
1907 /**
1908 * Returns an array of all the window state listeners
1909 * registered on this window.
1910 *
1911 * @return all of this window's {@code WindowStateListener}s
1912 * or an empty array if no window state
1913 * listeners are currently registered
1914 *
1915 * @see #addWindowStateListener
1916 * @see #removeWindowStateListener
1917 * @since 1.4
1918 */
1919 public synchronized WindowStateListener[] getWindowStateListeners() {
1920 return getListeners(WindowStateListener.class);
1921 }
1922
1923
1924 /**
1925 * Returns an array of all the objects currently registered
1926 * as <code><em>Foo</em>Listener</code>s
1927 * upon this {@code Window}.
1928 * <code><em>Foo</em>Listener</code>s are registered using the
1929 * <code>add<em>Foo</em>Listener</code> method.
1930 *
1931 * <p>
1932 *
1933 * You can specify the {@code listenerType} argument
1934 * with a class literal, such as
1935 * <code><em>Foo</em>Listener.class</code>.
1936 * For example, you can query a
1937 * {@code Window} {@code w}
1938 * for its window listeners with the following code:
1939 *
1940 * <pre>WindowListener[] wls = (WindowListener[])(w.getListeners(WindowListener.class));</pre>
1941 *
1942 * If no such listeners exist, this method returns an empty array.
1943 *
1944 * @param listenerType the type of listeners requested; this parameter
1945 * should specify an interface that descends from
1946 * {@code java.util.EventListener}
1947 * @return an array of all objects registered as
1948 * <code><em>Foo</em>Listener</code>s on this window,
1949 * or an empty array if no such
1950 * listeners have been added
1951 * @exception ClassCastException if {@code listenerType}
1952 * doesn't specify a class or interface that implements
1953 * {@code java.util.EventListener}
1954 * @exception NullPointerException if {@code listenerType} is {@code null}
1955 *
1956 * @see #getWindowListeners
1957 * @since 1.3
1958 */
1959 public <T extends EventListener> T[] getListeners(Class<T> listenerType) {
1960 EventListener l = null;
1961 if (listenerType == WindowFocusListener.class) {
1962 l = windowFocusListener;
1963 } else if (listenerType == WindowStateListener.class) {
1964 l = windowStateListener;
1965 } else if (listenerType == WindowListener.class) {
1966 l = windowListener;
1967 } else {
1968 return super.getListeners(listenerType);
1969 }
1970 return AWTEventMulticaster.getListeners(l, listenerType);
1971 }
1972
1973 // REMIND: remove when filtering is handled at lower level
1974 boolean eventEnabled(AWTEvent e) {
1975 switch(e.id) {
1976 case WindowEvent.WINDOW_OPENED:
1977 case WindowEvent.WINDOW_CLOSING:
1978 case WindowEvent.WINDOW_CLOSED:
1979 case WindowEvent.WINDOW_ICONIFIED:
1980 case WindowEvent.WINDOW_DEICONIFIED:
1981 case WindowEvent.WINDOW_ACTIVATED:
1982 case WindowEvent.WINDOW_DEACTIVATED:
1983 if ((eventMask & AWTEvent.WINDOW_EVENT_MASK) != 0 ||
1984 windowListener != null) {
1985 return true;
1986 }
1987 return false;
1988 case WindowEvent.WINDOW_GAINED_FOCUS:
1989 case WindowEvent.WINDOW_LOST_FOCUS:
1990 if ((eventMask & AWTEvent.WINDOW_FOCUS_EVENT_MASK) != 0 ||
1991 windowFocusListener != null) {
1992 return true;
1993 }
1994 return false;
1995 case WindowEvent.WINDOW_STATE_CHANGED:
1996 if ((eventMask & AWTEvent.WINDOW_STATE_EVENT_MASK) != 0 ||
1997 windowStateListener != null) {
1998 return true;
1999 }
2000 return false;
2001 default:
2002 break;
2003 }
2004 return super.eventEnabled(e);
2005 }
2006
2007 /**
2008 * Processes events on this window. If the event is an
2009 * {@code WindowEvent}, it invokes the
2010 * {@code processWindowEvent} method, else it invokes its
2011 * superclass's {@code processEvent}.
2012 * <p>Note that if the event parameter is {@code null}
2013 * the behavior is unspecified and may result in an
2014 * exception.
2015 *
2016 * @param e the event
2017 */
2018 protected void processEvent(AWTEvent e) {
2019 if (e instanceof WindowEvent) {
2020 switch (e.getID()) {
2021 case WindowEvent.WINDOW_OPENED:
2022 case WindowEvent.WINDOW_CLOSING:
2023 case WindowEvent.WINDOW_CLOSED:
2024 case WindowEvent.WINDOW_ICONIFIED:
2025 case WindowEvent.WINDOW_DEICONIFIED:
2026 case WindowEvent.WINDOW_ACTIVATED:
2027 case WindowEvent.WINDOW_DEACTIVATED:
2028 processWindowEvent((WindowEvent)e);
2029 break;
2030 case WindowEvent.WINDOW_GAINED_FOCUS:
2031 case WindowEvent.WINDOW_LOST_FOCUS:
2032 processWindowFocusEvent((WindowEvent)e);
2033 break;
2034 case WindowEvent.WINDOW_STATE_CHANGED:
2035 processWindowStateEvent((WindowEvent)e);
2036 break;
2037 }
2038 return;
2039 }
2040 super.processEvent(e);
2041 }
2042
2043 /**
2044 * Processes window events occurring on this window by
2045 * dispatching them to any registered WindowListener objects.
2046 * NOTE: This method will not be called unless window events
2047 * are enabled for this component; this happens when one of the
2048 * following occurs:
2049 * <ul>
2050 * <li>A WindowListener object is registered via
2051 * {@code addWindowListener}
2052 * <li>Window events are enabled via {@code enableEvents}
2053 * </ul>
2054 * <p>Note that if the event parameter is {@code null}
2055 * the behavior is unspecified and may result in an
2056 * exception.
2057 *
2058 * @param e the window event
2059 * @see Component#enableEvents
2060 */
2061 protected void processWindowEvent(WindowEvent e) {
2062 WindowListener listener = windowListener;
2063 if (listener != null) {
2064 switch(e.getID()) {
2065 case WindowEvent.WINDOW_OPENED:
2066 listener.windowOpened(e);
2067 break;
2068 case WindowEvent.WINDOW_CLOSING:
2069 listener.windowClosing(e);
2070 break;
2071 case WindowEvent.WINDOW_CLOSED:
2072 listener.windowClosed(e);
2073 break;
2074 case WindowEvent.WINDOW_ICONIFIED:
2075 listener.windowIconified(e);
2076 break;
2077 case WindowEvent.WINDOW_DEICONIFIED:
2078 listener.windowDeiconified(e);
2079 break;
2080 case WindowEvent.WINDOW_ACTIVATED:
2081 listener.windowActivated(e);
2082 break;
2083 case WindowEvent.WINDOW_DEACTIVATED:
2084 listener.windowDeactivated(e);
2085 break;
2086 default:
2087 break;
2088 }
2089 }
2090 }
2091
2092 /**
2093 * Processes window focus event occurring on this window by
2094 * dispatching them to any registered WindowFocusListener objects.
2095 * NOTE: this method will not be called unless window focus events
2096 * are enabled for this window. This happens when one of the
2097 * following occurs:
2098 * <ul>
2099 * <li>a WindowFocusListener is registered via
2100 * {@code addWindowFocusListener}
2101 * <li>Window focus events are enabled via {@code enableEvents}
2102 * </ul>
2103 * <p>Note that if the event parameter is {@code null}
2104 * the behavior is unspecified and may result in an
2105 * exception.
2106 *
2107 * @param e the window focus event
2108 * @see Component#enableEvents
2109 * @since 1.4
2110 */
2111 protected void processWindowFocusEvent(WindowEvent e) {
2112 WindowFocusListener listener = windowFocusListener;
2113 if (listener != null) {
2114 switch (e.getID()) {
2115 case WindowEvent.WINDOW_GAINED_FOCUS:
2116 listener.windowGainedFocus(e);
2117 break;
2118 case WindowEvent.WINDOW_LOST_FOCUS:
2119 listener.windowLostFocus(e);
2120 break;
2121 default:
2122 break;
2123 }
2124 }
2125 }
2126
2127 /**
2128 * Processes window state event occurring on this window by
2129 * dispatching them to any registered {@code WindowStateListener}
2130 * objects.
2131 * NOTE: this method will not be called unless window state events
2132 * are enabled for this window. This happens when one of the
2133 * following occurs:
2134 * <ul>
2135 * <li>a {@code WindowStateListener} is registered via
2136 * {@code addWindowStateListener}
2137 * <li>window state events are enabled via {@code enableEvents}
2138 * </ul>
2139 * <p>Note that if the event parameter is {@code null}
2140 * the behavior is unspecified and may result in an
2141 * exception.
2142 *
2143 * @param e the window state event
2144 * @see java.awt.Component#enableEvents
2145 * @since 1.4
2146 */
2147 protected void processWindowStateEvent(WindowEvent e) {
2148 WindowStateListener listener = windowStateListener;
2149 if (listener != null) {
2150 switch (e.getID()) {
2151 case WindowEvent.WINDOW_STATE_CHANGED:
2152 listener.windowStateChanged(e);
2153 break;
2154 default:
2155 break;
2156 }
2157 }
2158 }
2159
2160 /**
2161 * Implements a debugging hook -- checks to see if
2162 * the user has typed <i>control-shift-F1</i>. If so,
2163 * the list of child windows is dumped to {@code System.out}.
2164 * @param e the keyboard event
2165 */
2166 void preProcessKeyEvent(KeyEvent e) {
2167 // Dump the list of child windows to System.out.
2168 if (e.isActionKey() && e.getKeyCode() == KeyEvent.VK_F1 &&
2169 e.isControlDown() && e.isShiftDown() &&
2170 e.getID() == KeyEvent.KEY_PRESSED) {
2171 list(System.out, 0);
2172 }
2173 }
2174
2175 void postProcessKeyEvent(KeyEvent e) {
2176 // Do nothing
2177 }
2178
2179
2180 /**
2181 * Sets whether this window should always be above other windows. If
2182 * there are multiple always-on-top windows, their relative order is
2183 * unspecified and platform dependent.
2184 * <p>
2185 * If some other window is already always-on-top then the
2186 * relative order between these windows is unspecified (depends on
2187 * platform). No window can be brought to be over the always-on-top
2188 * window except maybe another always-on-top window.
2189 * <p>
2190 * All windows owned by an always-on-top window inherit this state and
2191 * automatically become always-on-top. If a window ceases to be
2192 * always-on-top, the windows that it owns will no longer be
2193 * always-on-top. When an always-on-top window is sent {@link #toBack
2194 * toBack}, its always-on-top state is set to {@code false}.
2195 *
2196 * <p> When this method is called on a window with a value of
2197 * {@code true}, and the window is visible and the platform
2198 * supports always-on-top for this window, the window is immediately
2199 * brought forward, "sticking" it in the top-most position. If the
2200 * window isn`t currently visible, this method sets the always-on-top
2201 * state to {@code true} but does not bring the window forward.
2202 * When the window is later shown, it will be always-on-top.
2203 *
2204 * <p> When this method is called on a window with a value of
2205 * {@code false} the always-on-top state is set to normal. It may also
2206 * cause an unspecified, platform-dependent change in the z-order of
2207 * top-level windows, but other always-on-top windows will remain in
2208 * top-most position. Calling this method with a value of {@code false}
2209 * on a window that has a normal state has no effect.
2210 *
2211 * <p><b>Note</b>: some platforms might not support always-on-top
2212 * windows. To detect if always-on-top windows are supported by the
2213 * current platform, use {@link Toolkit#isAlwaysOnTopSupported()} and
2214 * {@link Window#isAlwaysOnTopSupported()}. If always-on-top mode
2215 * isn't supported for this window or this window's toolkit does not
2216 * support always-on-top windows, calling this method has no effect.
2217 * <p>
2218 * If a SecurityManager is installed, the calling thread must be
2219 * granted the AWTPermission "setWindowAlwaysOnTop" in
2220 * order to set the value of this property. If this
2221 * permission is not granted, this method will throw a
2222 * SecurityException, and the current value of the property will
2223 * be left unchanged.
2224 *
2225 * @param alwaysOnTop true if the window should always be above other
2226 * windows
2227 * @throws SecurityException if the calling thread does not have
2228 * permission to set the value of always-on-top property
2229 *
2230 * @see #isAlwaysOnTop
2231 * @see #toFront
2232 * @see #toBack
2233 * @see AWTPermission
2234 * @see #isAlwaysOnTopSupported
2235 * @see #getToolkit
2236 * @see Toolkit#isAlwaysOnTopSupported
2237 * @since 1.5
2238 */
2239 public final void setAlwaysOnTop(boolean alwaysOnTop) throws SecurityException {
2240 SecurityManager security = System.getSecurityManager();
2241 if (security != null) {
2242 security.checkPermission(AWTPermissions.SET_WINDOW_ALWAYS_ON_TOP_PERMISSION);
2243 }
2244
2245 boolean oldAlwaysOnTop;
2246 synchronized(this) {
2247 oldAlwaysOnTop = this.alwaysOnTop;
2248 this.alwaysOnTop = alwaysOnTop;
2249 }
2250 if (oldAlwaysOnTop != alwaysOnTop ) {
2251 if (isAlwaysOnTopSupported()) {
2252 WindowPeer peer = (WindowPeer)this.peer;
2253 synchronized(getTreeLock()) {
2254 if (peer != null) {
2255 peer.updateAlwaysOnTopState();
2256 }
2257 }
2258 }
2259 firePropertyChange("alwaysOnTop", oldAlwaysOnTop, alwaysOnTop);
2260 }
2261 setOwnedWindowsAlwaysOnTop(alwaysOnTop);
2262 }
2263
2264 @SuppressWarnings({"rawtypes", "unchecked"})
2265 private void setOwnedWindowsAlwaysOnTop(boolean alwaysOnTop) {
2266 WeakReference<Window>[] ownedWindowArray;
2267 synchronized (ownedWindowList) {
2268 ownedWindowArray = new WeakReference[ownedWindowList.size()];
2269 ownedWindowList.copyInto(ownedWindowArray);
2270 }
2271
2272 for (WeakReference<Window> ref : ownedWindowArray) {
2273 Window window = ref.get();
2274 if (window != null) {
2275 try {
2276 window.setAlwaysOnTop(alwaysOnTop);
2277 } catch (SecurityException ignore) {
2278 }
2279 }
2280 }
2281 }
2282
2283 /**
2284 * Returns whether the always-on-top mode is supported for this
2285 * window. Some platforms may not support always-on-top windows, some
2286 * may support only some kinds of top-level windows; for example,
2287 * a platform may not support always-on-top modal dialogs.
2288 *
2289 * @return {@code true}, if the always-on-top mode is supported for
2290 * this window and this window's toolkit supports always-on-top windows,
2291 * {@code false} otherwise
2292 *
2293 * @see #setAlwaysOnTop(boolean)
2294 * @see #getToolkit
2295 * @see Toolkit#isAlwaysOnTopSupported
2296 * @since 1.6
2297 */
2298 public boolean isAlwaysOnTopSupported() {
2299 return Toolkit.getDefaultToolkit().isAlwaysOnTopSupported();
2300 }
2301
2302
2303 /**
2304 * Returns whether this window is an always-on-top window.
2305 * @return {@code true}, if the window is in always-on-top state,
2306 * {@code false} otherwise
2307 * @see #setAlwaysOnTop
2308 * @since 1.5
2309 */
2310 public final boolean isAlwaysOnTop() {
2311 return alwaysOnTop;
2312 }
2313
2314
2315 /**
2316 * Returns the child Component of this Window that has focus if this Window
2317 * is focused; returns null otherwise.
2318 *
2319 * @return the child Component with focus, or null if this Window is not
2320 * focused
2321 * @see #getMostRecentFocusOwner
2322 * @see #isFocused
2323 */
2324 public Component getFocusOwner() {
2325 return (isFocused())
2326 ? KeyboardFocusManager.getCurrentKeyboardFocusManager().
2327 getFocusOwner()
2328 : null;
2329 }
2330
2331 /**
2332 * Returns the child Component of this Window that will receive the focus
2333 * when this Window is focused. If this Window is currently focused, this
2334 * method returns the same Component as {@code getFocusOwner()}. If
2335 * this Window is not focused, then the child Component that most recently
2336 * requested focus will be returned. If no child Component has ever
2337 * requested focus, and this is a focusable Window, then this Window's
2338 * initial focusable Component is returned. If no child Component has ever
2339 * requested focus, and this is a non-focusable Window, null is returned.
2340 *
2341 * @return the child Component that will receive focus when this Window is
2342 * focused
2343 * @see #getFocusOwner
2344 * @see #isFocused
2345 * @see #isFocusableWindow
2346 * @since 1.4
2347 */
2348 public Component getMostRecentFocusOwner() {
2349 if (isFocused()) {
2350 return getFocusOwner();
2351 } else {
2352 Component mostRecent =
2353 KeyboardFocusManager.getMostRecentFocusOwner(this);
2354 if (mostRecent != null) {
2355 return mostRecent;
2356 } else {
2357 return (isFocusableWindow())
2358 ? getFocusTraversalPolicy().getInitialComponent(this)
2359 : null;
2360 }
2361 }
2362 }
2363
2364 /**
2365 * Returns whether this Window is active. Only a Frame or a Dialog may be
2366 * active. The native windowing system may denote the active Window or its
2367 * children with special decorations, such as a highlighted title bar. The
2368 * active Window is always either the focused Window, or the first Frame or
2369 * Dialog that is an owner of the focused Window.
2370 *
2371 * @return whether this is the active Window.
2372 * @see #isFocused
2373 * @since 1.4
2374 */
2375 public boolean isActive() {
2376 return (KeyboardFocusManager.getCurrentKeyboardFocusManager().
2377 getActiveWindow() == this);
2378 }
2379
2380 /**
2381 * Returns whether this Window is focused. If there exists a focus owner,
2382 * the focused Window is the Window that is, or contains, that focus owner.
2383 * If there is no focus owner, then no Window is focused.
2384 * <p>
2385 * If the focused Window is a Frame or a Dialog it is also the active
2386 * Window. Otherwise, the active Window is the first Frame or Dialog that
2387 * is an owner of the focused Window.
2388 *
2389 * @return whether this is the focused Window.
2390 * @see #isActive
2391 * @since 1.4
2392 */
2393 public boolean isFocused() {
2394 return (KeyboardFocusManager.getCurrentKeyboardFocusManager().
2395 getGlobalFocusedWindow() == this);
2396 }
2397
2398 /**
2399 * Gets a focus traversal key for this Window. (See {@code
2400 * setFocusTraversalKeys} for a full description of each key.)
2401 * <p>
2402 * If the traversal key has not been explicitly set for this Window,
2403 * then this Window's parent's traversal key is returned. If the
2404 * traversal key has not been explicitly set for any of this Window's
2405 * ancestors, then the current KeyboardFocusManager's default traversal key
2406 * is returned.
2407 *
2408 * @param id one of KeyboardFocusManager.FORWARD_TRAVERSAL_KEYS,
2409 * KeyboardFocusManager.BACKWARD_TRAVERSAL_KEYS,
2410 * KeyboardFocusManager.UP_CYCLE_TRAVERSAL_KEYS, or
2411 * KeyboardFocusManager.DOWN_CYCLE_TRAVERSAL_KEYS
2412 * @return the AWTKeyStroke for the specified key
2413 * @see Container#setFocusTraversalKeys
2414 * @see KeyboardFocusManager#FORWARD_TRAVERSAL_KEYS
2415 * @see KeyboardFocusManager#BACKWARD_TRAVERSAL_KEYS
2416 * @see KeyboardFocusManager#UP_CYCLE_TRAVERSAL_KEYS
2417 * @see KeyboardFocusManager#DOWN_CYCLE_TRAVERSAL_KEYS
2418 * @throws IllegalArgumentException if id is not one of
2419 * KeyboardFocusManager.FORWARD_TRAVERSAL_KEYS,
2420 * KeyboardFocusManager.BACKWARD_TRAVERSAL_KEYS,
2421 * KeyboardFocusManager.UP_CYCLE_TRAVERSAL_KEYS, or
2422 * KeyboardFocusManager.DOWN_CYCLE_TRAVERSAL_KEYS
2423 * @since 1.4
2424 */
2425 @SuppressWarnings("unchecked")
2426 public Set<AWTKeyStroke> getFocusTraversalKeys(int id) {
2427 if (id < 0 || id >= KeyboardFocusManager.TRAVERSAL_KEY_LENGTH) {
2428 throw new IllegalArgumentException("invalid focus traversal key identifier");
2429 }
2430
2431 // Okay to return Set directly because it is an unmodifiable view
2432 @SuppressWarnings("rawtypes")
2433 Set keystrokes = (focusTraversalKeys != null)
2434 ? focusTraversalKeys[id]
2435 : null;
2436
2437 if (keystrokes != null) {
2438 return keystrokes;
2439 } else {
2440 return KeyboardFocusManager.getCurrentKeyboardFocusManager().
2441 getDefaultFocusTraversalKeys(id);
2442 }
2443 }
2444
2445 /**
2446 * Does nothing because Windows must always be roots of a focus traversal
2447 * cycle. The passed-in value is ignored.
2448 *
2449 * @param focusCycleRoot this value is ignored
2450 * @see #isFocusCycleRoot
2451 * @see Container#setFocusTraversalPolicy
2452 * @see Container#getFocusTraversalPolicy
2453 * @since 1.4
2454 */
2455 public final void setFocusCycleRoot(boolean focusCycleRoot) {
2456 }
2457
2458 /**
2459 * Always returns {@code true} because all Windows must be roots of a
2460 * focus traversal cycle.
2461 *
2462 * @return {@code true}
2463 * @see #setFocusCycleRoot
2464 * @see Container#setFocusTraversalPolicy
2465 * @see Container#getFocusTraversalPolicy
2466 * @since 1.4
2467 */
2468 public final boolean isFocusCycleRoot() {
2469 return true;
2470 }
2471
2472 /**
2473 * Always returns {@code null} because Windows have no ancestors; they
2474 * represent the top of the Component hierarchy.
2475 *
2476 * @return {@code null}
2477 * @see Container#isFocusCycleRoot()
2478 * @since 1.4
2479 */
2480 public final Container getFocusCycleRootAncestor() {
2481 return null;
2482 }
2483
2484 /**
2485 * Returns whether this Window can become the focused Window, that is,
2486 * whether this Window or any of its subcomponents can become the focus
2487 * owner. For a Frame or Dialog to be focusable, its focusable Window state
2488 * must be set to {@code true}. For a Window which is not a Frame or
2489 * Dialog to be focusable, its focusable Window state must be set to
2490 * {@code true}, its nearest owning Frame or Dialog must be
2491 * showing on the screen, and it must contain at least one Component in
2492 * its focus traversal cycle. If any of these conditions is not met, then
2493 * neither this Window nor any of its subcomponents can become the focus
2494 * owner.
2495 *
2496 * @return {@code true} if this Window can be the focused Window;
2497 * {@code false} otherwise
2498 * @see #getFocusableWindowState
2499 * @see #setFocusableWindowState
2500 * @see #isShowing
2501 * @see Component#isFocusable
2502 * @since 1.4
2503 */
2504 public final boolean isFocusableWindow() {
2505 // If a Window/Frame/Dialog was made non-focusable, then it is always
2506 // non-focusable.
2507 if (!getFocusableWindowState()) {
2508 return false;
2509 }
2510
2511 // All other tests apply only to Windows.
2512 if (this instanceof Frame || this instanceof Dialog) {
2513 return true;
2514 }
2515
2516 // A Window must have at least one Component in its root focus
2517 // traversal cycle to be focusable.
2518 if (getFocusTraversalPolicy().getDefaultComponent(this) == null) {
2519 return false;
2520 }
2521
2522 // A Window's nearest owning Frame or Dialog must be showing on the
2523 // screen.
2524 for (Window owner = getOwner(); owner != null;
2525 owner = owner.getOwner())
2526 {
2527 if (owner instanceof Frame || owner instanceof Dialog) {
2528 return owner.isShowing();
2529 }
2530 }
2531
2532 return false;
2533 }
2534
2535 /**
2536 * Returns whether this Window can become the focused Window if it meets
2537 * the other requirements outlined in {@code isFocusableWindow}. If
2538 * this method returns {@code false}, then
2539 * {@code isFocusableWindow} will return {@code false} as well.
2540 * If this method returns {@code true}, then
2541 * {@code isFocusableWindow} may return {@code true} or
2542 * {@code false} depending upon the other requirements which must be
2543 * met in order for a Window to be focusable.
2544 * <p>
2545 * By default, all Windows have a focusable Window state of
2546 * {@code true}.
2547 *
2548 * @return whether this Window can be the focused Window
2549 * @see #isFocusableWindow
2550 * @see #setFocusableWindowState
2551 * @see #isShowing
2552 * @see Component#setFocusable
2553 * @since 1.4
2554 */
2555 public boolean getFocusableWindowState() {
2556 return focusableWindowState;
2557 }
2558
2559 /**
2560 * Sets whether this Window can become the focused Window if it meets
2561 * the other requirements outlined in {@code isFocusableWindow}. If
2562 * this Window's focusable Window state is set to {@code false}, then
2563 * {@code isFocusableWindow} will return {@code false}. If this
2564 * Window's focusable Window state is set to {@code true}, then
2565 * {@code isFocusableWindow} may return {@code true} or
2566 * {@code false} depending upon the other requirements which must be
2567 * met in order for a Window to be focusable.
2568 * <p>
2569 * Setting a Window's focusability state to {@code false} is the
2570 * standard mechanism for an application to identify to the AWT a Window
2571 * which will be used as a floating palette or toolbar, and thus should be
2572 * a non-focusable Window.
2573 *
2574 * Setting the focusability state on a visible {@code Window}
2575 * can have a delayed effect on some platforms — the actual
2576 * change may happen only when the {@code Window} becomes
2577 * hidden and then visible again. To ensure consistent behavior
2578 * across platforms, set the {@code Window}'s focusable state
2579 * when the {@code Window} is invisible and then show it.
2580 *
2581 * @param focusableWindowState whether this Window can be the focused
2582 * Window
2583 * @see #isFocusableWindow
2584 * @see #getFocusableWindowState
2585 * @see #isShowing
2586 * @see Component#setFocusable
2587 * @since 1.4
2588 */
2589 public void setFocusableWindowState(boolean focusableWindowState) {
2590 boolean oldFocusableWindowState;
2591 synchronized (this) {
2592 oldFocusableWindowState = this.focusableWindowState;
2593 this.focusableWindowState = focusableWindowState;
2594 }
2595 WindowPeer peer = (WindowPeer)this.peer;
2596 if (peer != null) {
2597 peer.updateFocusableWindowState();
2598 }
2599 firePropertyChange("focusableWindowState", oldFocusableWindowState,
2600 focusableWindowState);
2601 if (oldFocusableWindowState && !focusableWindowState && isFocused()) {
2602 for (Window owner = getOwner();
2603 owner != null;
2604 owner = owner.getOwner())
2605 {
2606 Component toFocus =
2607 KeyboardFocusManager.getMostRecentFocusOwner(owner);
2608 if (toFocus != null && toFocus.requestFocus(false, CausedFocusEvent.Cause.ACTIVATION)) {
2609 return;
2610 }
2611 }
2612 KeyboardFocusManager.getCurrentKeyboardFocusManager().
2613 clearGlobalFocusOwnerPriv();
2614 }
2615 }
2616
2617 /**
2618 * Sets whether this window should receive focus on
2619 * subsequently being shown (with a call to {@link #setVisible setVisible(true)}),
2620 * or being moved to the front (with a call to {@link #toFront}).
2621 * <p>
2622 * Note that {@link #setVisible setVisible(true)} may be called indirectly
2623 * (e.g. when showing an owner of the window makes the window to be shown).
2624 * {@link #toFront} may also be called indirectly (e.g. when
2625 * {@link #setVisible setVisible(true)} is called on already visible window).
2626 * In all such cases this property takes effect as well.
2627 * <p>
2628 * The value of the property is not inherited by owned windows.
2629 *
2630 * @param autoRequestFocus whether this window should be focused on
2631 * subsequently being shown or being moved to the front
2632 * @see #isAutoRequestFocus
2633 * @see #isFocusableWindow
2634 * @see #setVisible
2635 * @see #toFront
2636 * @since 1.7
2637 */
2638 public void setAutoRequestFocus(boolean autoRequestFocus) {
2639 this.autoRequestFocus = autoRequestFocus;
2640 }
2641
2642 /**
2643 * Returns whether this window should receive focus on subsequently being shown
2644 * (with a call to {@link #setVisible setVisible(true)}), or being moved to the front
2645 * (with a call to {@link #toFront}).
2646 * <p>
2647 * By default, the window has {@code autoRequestFocus} value of {@code true}.
2648 *
2649 * @return {@code autoRequestFocus} value
2650 * @see #setAutoRequestFocus
2651 * @since 1.7
2652 */
2653 public boolean isAutoRequestFocus() {
2654 return autoRequestFocus;
2655 }
2656
2657 /**
2658 * Adds a PropertyChangeListener to the listener list. The listener is
2659 * registered for all bound properties of this class, including the
2660 * following:
2661 * <ul>
2662 * <li>this Window's font ("font")</li>
2663 * <li>this Window's background color ("background")</li>
2664 * <li>this Window's foreground color ("foreground")</li>
2665 * <li>this Window's focusability ("focusable")</li>
2666 * <li>this Window's focus traversal keys enabled state
2667 * ("focusTraversalKeysEnabled")</li>
2668 * <li>this Window's Set of FORWARD_TRAVERSAL_KEYS
2669 * ("forwardFocusTraversalKeys")</li>
2670 * <li>this Window's Set of BACKWARD_TRAVERSAL_KEYS
2671 * ("backwardFocusTraversalKeys")</li>
2672 * <li>this Window's Set of UP_CYCLE_TRAVERSAL_KEYS
2673 * ("upCycleFocusTraversalKeys")</li>
2674 * <li>this Window's Set of DOWN_CYCLE_TRAVERSAL_KEYS
2675 * ("downCycleFocusTraversalKeys")</li>
2676 * <li>this Window's focus traversal policy ("focusTraversalPolicy")
2677 * </li>
2678 * <li>this Window's focusable Window state ("focusableWindowState")
2679 * </li>
2680 * <li>this Window's always-on-top state("alwaysOnTop")</li>
2681 * </ul>
2682 * Note that if this Window is inheriting a bound property, then no
2683 * event will be fired in response to a change in the inherited property.
2684 * <p>
2685 * If listener is null, no exception is thrown and no action is performed.
2686 *
2687 * @param listener the PropertyChangeListener to be added
2688 *
2689 * @see Component#removePropertyChangeListener
2690 * @see #addPropertyChangeListener(java.lang.String,java.beans.PropertyChangeListener)
2691 */
2692 public void addPropertyChangeListener(PropertyChangeListener listener) {
2693 super.addPropertyChangeListener(listener);
2694 }
2695
2696 /**
2697 * Adds a PropertyChangeListener to the listener list for a specific
2698 * property. The specified property may be user-defined, or one of the
2699 * following:
2700 * <ul>
2701 * <li>this Window's font ("font")</li>
2702 * <li>this Window's background color ("background")</li>
2703 * <li>this Window's foreground color ("foreground")</li>
2704 * <li>this Window's focusability ("focusable")</li>
2705 * <li>this Window's focus traversal keys enabled state
2706 * ("focusTraversalKeysEnabled")</li>
2707 * <li>this Window's Set of FORWARD_TRAVERSAL_KEYS
2708 * ("forwardFocusTraversalKeys")</li>
2709 * <li>this Window's Set of BACKWARD_TRAVERSAL_KEYS
2710 * ("backwardFocusTraversalKeys")</li>
2711 * <li>this Window's Set of UP_CYCLE_TRAVERSAL_KEYS
2712 * ("upCycleFocusTraversalKeys")</li>
2713 * <li>this Window's Set of DOWN_CYCLE_TRAVERSAL_KEYS
2714 * ("downCycleFocusTraversalKeys")</li>
2715 * <li>this Window's focus traversal policy ("focusTraversalPolicy")
2716 * </li>
2717 * <li>this Window's focusable Window state ("focusableWindowState")
2718 * </li>
2719 * <li>this Window's always-on-top state("alwaysOnTop")</li>
2720 * </ul>
2721 * Note that if this Window is inheriting a bound property, then no
2722 * event will be fired in response to a change in the inherited property.
2723 * <p>
2724 * If listener is null, no exception is thrown and no action is performed.
2725 *
2726 * @param propertyName one of the property names listed above
2727 * @param listener the PropertyChangeListener to be added
2728 *
2729 * @see #addPropertyChangeListener(java.beans.PropertyChangeListener)
2730 * @see Component#removePropertyChangeListener
2731 */
2732 public void addPropertyChangeListener(String propertyName,
2733 PropertyChangeListener listener) {
2734 super.addPropertyChangeListener(propertyName, listener);
2735 }
2736
2737 /**
2738 * Indicates if this container is a validate root.
2739 * <p>
2740 * {@code Window} objects are the validate roots, and, therefore, they
2741 * override this method to return {@code true}.
2742 *
2743 * @return {@code true}
2744 * @since 1.7
2745 * @see java.awt.Container#isValidateRoot
2746 */
2747 @Override
2748 public boolean isValidateRoot() {
2749 return true;
2750 }
2751
2752 /**
2753 * Dispatches an event to this window or one of its sub components.
2754 * @param e the event
2755 */
2756 void dispatchEventImpl(AWTEvent e) {
2757 if (e.getID() == ComponentEvent.COMPONENT_RESIZED) {
2758 invalidate();
2759 validate();
2760 }
2761 super.dispatchEventImpl(e);
2762 }
2763
2764 /**
2765 * @deprecated As of JDK version 1.1
2766 * replaced by {@code dispatchEvent(AWTEvent)}.
2767 */
2768 @Deprecated
2769 public boolean postEvent(Event e) {
2770 if (handleEvent(e)) {
2771 e.consume();
2772 return true;
2773 }
2774 return false;
2775 }
2776
2777 /**
2778 * Checks if this Window is showing on screen.
2779 * @see Component#setVisible
2780 */
2781 public boolean isShowing() {
2782 return visible;
2783 }
2784
2785 boolean isDisposing() {
2786 return disposing;
2787 }
2788
2789 /**
2790 * @deprecated As of J2SE 1.4, replaced by
2791 * {@link Component#applyComponentOrientation Component.applyComponentOrientation}.
2792 */
2793 @Deprecated
2794 public void applyResourceBundle(ResourceBundle rb) {
2795 applyComponentOrientation(ComponentOrientation.getOrientation(rb));
2796 }
2797
2798 /**
2799 * @deprecated As of J2SE 1.4, replaced by
2800 * {@link Component#applyComponentOrientation Component.applyComponentOrientation}.
2801 */
2802 @Deprecated
2803 public void applyResourceBundle(String rbName) {
2804 applyResourceBundle(ResourceBundle.getBundle(rbName));
2805 }
2806
2807 /*
2808 * Support for tracking all windows owned by this window
2809 */
2810 void addOwnedWindow(WeakReference<Window> weakWindow) {
2811 if (weakWindow != null) {
2812 synchronized(ownedWindowList) {
2813 // this if statement should really be an assert, but we don't
2814 // have asserts...
2815 if (!ownedWindowList.contains(weakWindow)) {
2816 ownedWindowList.addElement(weakWindow);
2817 }
2818 }
2819 }
2820 }
2821
2822 void removeOwnedWindow(WeakReference<Window> weakWindow) {
2823 if (weakWindow != null) {
2824 // synchronized block not required since removeElement is
2825 // already synchronized
2826 ownedWindowList.removeElement(weakWindow);
2827 }
2828 }
2829
2830 void connectOwnedWindow(Window child) {
2831 child.parent = this;
2832 addOwnedWindow(child.weakThis);
2833 child.disposerRecord.updateOwner();
2834 }
2835
2836 private void addToWindowList() {
2837 synchronized (Window.class) {
2838 @SuppressWarnings("unchecked")
2839 Vector<WeakReference<Window>> windowList = (Vector<WeakReference<Window>>)appContext.get(Window.class);
2840 if (windowList == null) {
2841 windowList = new Vector<WeakReference<Window>>();
2842 appContext.put(Window.class, windowList);
2843 }
2844 windowList.add(weakThis);
2845 }
2846 }
2847
2848 private static void removeFromWindowList(AppContext context, WeakReference<Window> weakThis) {
2849 synchronized (Window.class) {
2850 @SuppressWarnings("unchecked")
2851 Vector<WeakReference<Window>> windowList = (Vector<WeakReference<Window>>)context.get(Window.class);
2852 if (windowList != null) {
2853 windowList.remove(weakThis);
2854 }
2855 }
2856 }
2857
2858 private void removeFromWindowList() {
2859 removeFromWindowList(appContext, weakThis);
2860 }
2861
2862 /**
2863 * Window type.
2864 *
2865 * Synchronization: ObjectLock
2866 */
2867 private Type type = Type.NORMAL;
2868
2869 /**
2870 * Sets the type of the window.
2871 *
2872 * This method can only be called while the window is not displayable.
2873 *
2874 * @param type the window type
2875 * @throws IllegalComponentStateException if the window
2876 * is displayable.
2877 * @throws IllegalArgumentException if the type is {@code null}
2878 * @see Component#isDisplayable
2879 * @see #getType
2880 * @since 1.7
2881 */
2882 public void setType(Type type) {
2883 if (type == null) {
2884 throw new IllegalArgumentException("type should not be null.");
2885 }
2886 synchronized (getTreeLock()) {
2887 if (isDisplayable()) {
2888 throw new IllegalComponentStateException(
2889 "The window is displayable.");
2890 }
2891 synchronized (getObjectLock()) {
2892 this.type = type;
2893 }
2894 }
2895 }
2896
2897 /**
2898 * Returns the type of the window.
2899 *
2900 * @return the type of the window
2901 * @see #setType
2902 * @since 1.7
2903 */
2904 public Type getType() {
2905 synchronized (getObjectLock()) {
2906 return type;
2907 }
2908 }
2909
2910 /**
2911 * The window serialized data version.
2912 *
2913 * @serial
2914 */
2915 private int windowSerializedDataVersion = 2;
2916
2917 /**
2918 * Writes default serializable fields to stream. Writes
2919 * a list of serializable {@code WindowListener}s and
2920 * {@code WindowFocusListener}s as optional data.
2921 * Writes a list of child windows as optional data.
2922 * Writes a list of icon images as optional data
2923 *
2924 * @param s the {@code ObjectOutputStream} to write
2925 * @serialData {@code null} terminated sequence of
2926 * 0 or more pairs; the pair consists of a {@code String}
2927 * and {@code Object}; the {@code String}
2928 * indicates the type of object and is one of the following:
2929 * {@code windowListenerK} indicating a
2930 * {@code WindowListener} object;
2931 * {@code windowFocusWindowK} indicating a
2932 * {@code WindowFocusListener} object;
2933 * {@code ownedWindowK} indicating a child
2934 * {@code Window} object
2935 *
2936 * @see AWTEventMulticaster#save(java.io.ObjectOutputStream, java.lang.String, java.util.EventListener)
2937 * @see Component#windowListenerK
2938 * @see Component#windowFocusListenerK
2939 * @see Component#ownedWindowK
2940 * @see #readObject(ObjectInputStream)
2941 */
2942 private void writeObject(ObjectOutputStream s) throws IOException {
2943 synchronized (this) {
2944 // Update old focusMgr fields so that our object stream can be read
2945 // by previous releases
2946 focusMgr = new FocusManager();
2947 focusMgr.focusRoot = this;
2948 focusMgr.focusOwner = getMostRecentFocusOwner();
2949
2950 s.defaultWriteObject();
2951
2952 // Clear fields so that we don't keep extra references around
2953 focusMgr = null;
2954
2955 AWTEventMulticaster.save(s, windowListenerK, windowListener);
2956 AWTEventMulticaster.save(s, windowFocusListenerK, windowFocusListener);
2957 AWTEventMulticaster.save(s, windowStateListenerK, windowStateListener);
2958 }
2959
2960 s.writeObject(null);
2961
2962 synchronized (ownedWindowList) {
2963 for (int i = 0; i < ownedWindowList.size(); i++) {
2964 Window child = ownedWindowList.elementAt(i).get();
2965 if (child != null) {
2966 s.writeObject(ownedWindowK);
2967 s.writeObject(child);
2968 }
2969 }
2970 }
2971 s.writeObject(null);
2972
2973 //write icon array
2974 if (icons != null) {
2975 for (Image i : icons) {
2976 if (i instanceof Serializable) {
2977 s.writeObject(i);
2978 }
2979 }
2980 }
2981 s.writeObject(null);
2982 }
2983
2984 //
2985 // Part of deserialization procedure to be called before
2986 // user's code.
2987 //
2988 private void initDeserializedWindow() {
2989 setWarningString();
2990 inputContextLock = new Object();
2991
2992 // Deserialized Windows are not yet visible.
2993 visible = false;
2994
2995 weakThis = new WeakReference<>(this);
2996
2997 anchor = new Object();
2998 disposerRecord = new WindowDisposerRecord(appContext, this);
2999 sun.java2d.Disposer.addRecord(anchor, disposerRecord);
3000
3001 addToWindowList();
3002 initGC(null);
3003 ownedWindowList = new Vector<>();
3004 }
3005
3006 private void deserializeResources(ObjectInputStream s)
3007 throws ClassNotFoundException, IOException, HeadlessException {
3008
3009 if (windowSerializedDataVersion < 2) {
3010 // Translate old-style focus tracking to new model. For 1.4 and
3011 // later releases, we'll rely on the Window's initial focusable
3012 // Component.
3013 if (focusMgr != null) {
3014 if (focusMgr.focusOwner != null) {
3015 KeyboardFocusManager.
3016 setMostRecentFocusOwner(this, focusMgr.focusOwner);
3017 }
3018 }
3019
3020 // This field is non-transient and relies on default serialization.
3021 // However, the default value is insufficient, so we need to set
3022 // it explicitly for object data streams prior to 1.4.
3023 focusableWindowState = true;
3024
3025
3026 }
3027
3028 Object keyOrNull;
3029 while(null != (keyOrNull = s.readObject())) {
3030 String key = ((String)keyOrNull).intern();
3031
3032 if (windowListenerK == key) {
3033 addWindowListener((WindowListener)(s.readObject()));
3034 } else if (windowFocusListenerK == key) {
3035 addWindowFocusListener((WindowFocusListener)(s.readObject()));
3036 } else if (windowStateListenerK == key) {
3037 addWindowStateListener((WindowStateListener)(s.readObject()));
3038 } else // skip value for unrecognized key
3039 s.readObject();
3040 }
3041
3042 try {
3043 while (null != (keyOrNull = s.readObject())) {
3044 String key = ((String)keyOrNull).intern();
3045
3046 if (ownedWindowK == key)
3047 connectOwnedWindow((Window) s.readObject());
3048
3049 else // skip value for unrecognized key
3050 s.readObject();
3051 }
3052
3053 //read icons
3054 Object obj = s.readObject(); //Throws OptionalDataException
3055 //for pre1.6 objects.
3056 icons = new ArrayList<Image>(); //Frame.readObject() assumes
3057 //pre1.6 version if icons is null.
3058 while (obj != null) {
3059 if (obj instanceof Image) {
3060 icons.add((Image)obj);
3061 }
3062 obj = s.readObject();
3063 }
3064 }
3065 catch (OptionalDataException e) {
3066 // 1.1 serialized form
3067 // ownedWindowList will be updated by Frame.readObject
3068 }
3069
3070 }
3071
3072 /**
3073 * Reads the {@code ObjectInputStream} and an optional
3074 * list of listeners to receive various events fired by
3075 * the component; also reads a list of
3076 * (possibly {@code null}) child windows.
3077 * Unrecognized keys or values will be ignored.
3078 *
3079 * @param s the {@code ObjectInputStream} to read
3080 * @exception HeadlessException if
3081 * {@code GraphicsEnvironment.isHeadless} returns
3082 * {@code true}
3083 * @see java.awt.GraphicsEnvironment#isHeadless
3084 * @see #writeObject
3085 */
3086 private void readObject(ObjectInputStream s)
3087 throws ClassNotFoundException, IOException, HeadlessException
3088 {
3089 GraphicsEnvironment.checkHeadless();
3090 initDeserializedWindow();
3091 ObjectInputStream.GetField f = s.readFields();
3092
3093 syncLWRequests = f.get("syncLWRequests", systemSyncLWRequests);
3094 state = f.get("state", 0);
3095 focusableWindowState = f.get("focusableWindowState", true);
3096 windowSerializedDataVersion = f.get("windowSerializedDataVersion", 1);
3097 locationByPlatform = f.get("locationByPlatform", locationByPlatformProp);
3098 // Note: 1.4 (or later) doesn't use focusMgr
3099 focusMgr = (FocusManager)f.get("focusMgr", null);
3100 Dialog.ModalExclusionType et = (Dialog.ModalExclusionType)
3101 f.get("modalExclusionType", Dialog.ModalExclusionType.NO_EXCLUDE);
3102 setModalExclusionType(et); // since 6.0
3103 boolean aot = f.get("alwaysOnTop", false);
3104 if(aot) {
3105 setAlwaysOnTop(aot); // since 1.5; subject to permission check
3106 }
3107 shape = (Shape)f.get("shape", null);
3108 opacity = (Float)f.get("opacity", 1.0f);
3109
3110 this.securityWarningWidth = 0;
3111 this.securityWarningHeight = 0;
3112 this.securityWarningPointX = 2.0;
3113 this.securityWarningPointY = 0.0;
3114 this.securityWarningAlignmentX = RIGHT_ALIGNMENT;
3115 this.securityWarningAlignmentY = TOP_ALIGNMENT;
3116
3117 deserializeResources(s);
3118 }
3119
3120 /*
3121 * --- Accessibility Support ---
3122 *
3123 */
3124
3125 /**
3126 * Gets the AccessibleContext associated with this Window.
3127 * For windows, the AccessibleContext takes the form of an
3128 * AccessibleAWTWindow.
3129 * A new AccessibleAWTWindow instance is created if necessary.
3130 *
3131 * @return an AccessibleAWTWindow that serves as the
3132 * AccessibleContext of this Window
3133 * @since 1.3
3134 */
3135 public AccessibleContext getAccessibleContext() {
3136 if (accessibleContext == null) {
3137 accessibleContext = new AccessibleAWTWindow();
3138 }
3139 return accessibleContext;
3140 }
3141
3142 /**
3143 * This class implements accessibility support for the
3144 * {@code Window} class. It provides an implementation of the
3145 * Java Accessibility API appropriate to window user-interface elements.
3146 * @since 1.3
3147 */
3148 protected class AccessibleAWTWindow extends AccessibleAWTContainer
3149 {
3150 /*
3151 * JDK 1.3 serialVersionUID
3152 */
3153 private static final long serialVersionUID = 4215068635060671780L;
3154
3155 /**
3156 * Get the role of this object.
3157 *
3158 * @return an instance of AccessibleRole describing the role of the
3159 * object
3160 * @see javax.accessibility.AccessibleRole
3161 */
3162 public AccessibleRole getAccessibleRole() {
3163 return AccessibleRole.WINDOW;
3164 }
3165
3166 /**
3167 * Get the state of this object.
3168 *
3169 * @return an instance of AccessibleStateSet containing the current
3170 * state set of the object
3171 * @see javax.accessibility.AccessibleState
3172 */
3173 public AccessibleStateSet getAccessibleStateSet() {
3174 AccessibleStateSet states = super.getAccessibleStateSet();
3175 if (getFocusOwner() != null) {
3176 states.add(AccessibleState.ACTIVE);
3177 }
3178 return states;
3179 }
3180
3181 } // inner class AccessibleAWTWindow
3182
3183 @Override
3184 void setGraphicsConfiguration(GraphicsConfiguration gc) {
3185 if (gc == null) {
3186 gc = GraphicsEnvironment.
3187 getLocalGraphicsEnvironment().
3188 getDefaultScreenDevice().
3189 getDefaultConfiguration();
3190 }
3191 synchronized (getTreeLock()) {
3192 super.setGraphicsConfiguration(gc);
3193 if (log.isLoggable(PlatformLogger.Level.FINER)) {
3194 log.finer("+ Window.setGraphicsConfiguration(): new GC is \n+ " + getGraphicsConfiguration_NoClientCode() + "\n+ this is " + this);
3195 }
3196 }
3197 }
3198
3199 /**
3200 * Sets the location of the window relative to the specified
3201 * component according to the following scenarios.
3202 * <p>
3203 * The target screen mentioned below is a screen to which
3204 * the window should be placed after the setLocationRelativeTo
3205 * method is called.
3206 * <ul>
3207 * <li>If the component is {@code null}, or the {@code
3208 * GraphicsConfiguration} associated with this component is
3209 * {@code null}, the window is placed in the center of the
3210 * screen. The center point can be obtained with the {@link
3211 * GraphicsEnvironment#getCenterPoint
3212 * GraphicsEnvironment.getCenterPoint} method.
3213 * <li>If the component is not {@code null}, but it is not
3214 * currently showing, the window is placed in the center of
3215 * the target screen defined by the {@code
3216 * GraphicsConfiguration} associated with this component.
3217 * <li>If the component is not {@code null} and is shown on
3218 * the screen, then the window is located in such a way that
3219 * the center of the window coincides with the center of the
3220 * component.
3221 * </ul>
3222 * <p>
3223 * If the screens configuration does not allow the window to
3224 * be moved from one screen to another, then the window is
3225 * only placed at the location determined according to the
3226 * above conditions and its {@code GraphicsConfiguration} is
3227 * not changed.
3228 * <p>
3229 * <b>Note</b>: If the lower edge of the window is out of the screen,
3230 * then the window is placed to the side of the {@code Component}
3231 * that is closest to the center of the screen. So if the
3232 * component is on the right part of the screen, the window
3233 * is placed to its left, and vice versa.
3234 * <p>
3235 * If after the window location has been calculated, the upper,
3236 * left, or right edge of the window is out of the screen,
3237 * then the window is located in such a way that the upper,
3238 * left, or right edge of the window coincides with the
3239 * corresponding edge of the screen. If both left and right
3240 * edges of the window are out of the screen, the window is
3241 * placed at the left side of the screen. The similar placement
3242 * will occur if both top and bottom edges are out of the screen.
3243 * In that case, the window is placed at the top side of the screen.
3244 * <p>
3245 * The method changes the geometry-related data. Therefore,
3246 * the native windowing system may ignore such requests, or it may modify
3247 * the requested data, so that the {@code Window} object is placed and sized
3248 * in a way that corresponds closely to the desktop settings.
3249 *
3250 * @param c the component in relation to which the window's location
3251 * is determined
3252 * @see java.awt.GraphicsEnvironment#getCenterPoint
3253 * @since 1.4
3254 */
3255 public void setLocationRelativeTo(Component c) {
3256 // target location
3257 int dx = 0, dy = 0;
3258 // target GC
3259 GraphicsConfiguration gc = getGraphicsConfiguration_NoClientCode();
3260 Rectangle gcBounds = gc.getBounds();
3261
3262 Dimension windowSize = getSize();
3263
3264 // search a top-level of c
3265 Window componentWindow = SunToolkit.getContainingWindow(c);
3266 if ((c == null) || (componentWindow == null)) {
3267 GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment();
3268 gc = ge.getDefaultScreenDevice().getDefaultConfiguration();
3269 gcBounds = gc.getBounds();
3270 Point centerPoint = ge.getCenterPoint();
3271 dx = centerPoint.x - windowSize.width / 2;
3272 dy = centerPoint.y - windowSize.height / 2;
3273 } else if (!c.isShowing()) {
3274 gc = componentWindow.getGraphicsConfiguration();
3275 gcBounds = gc.getBounds();
3276 dx = gcBounds.x + (gcBounds.width - windowSize.width) / 2;
3277 dy = gcBounds.y + (gcBounds.height - windowSize.height) / 2;
3278 } else {
3279 gc = componentWindow.getGraphicsConfiguration();
3280 gcBounds = gc.getBounds();
3281 Dimension compSize = c.getSize();
3282 Point compLocation = c.getLocationOnScreen();
3283 dx = compLocation.x + ((compSize.width - windowSize.width) / 2);
3284 dy = compLocation.y + ((compSize.height - windowSize.height) / 2);
3285
3286 // Adjust for bottom edge being offscreen
3287 if (dy + windowSize.height > gcBounds.y + gcBounds.height) {
3288 dy = gcBounds.y + gcBounds.height - windowSize.height;
3289 if (compLocation.x - gcBounds.x + compSize.width / 2 < gcBounds.width / 2) {
3290 dx = compLocation.x + compSize.width;
3291 } else {
3292 dx = compLocation.x - windowSize.width;
3293 }
3294 }
3295 }
3296
3297 // Avoid being placed off the edge of the screen:
3298 // bottom
3299 if (dy + windowSize.height > gcBounds.y + gcBounds.height) {
3300 dy = gcBounds.y + gcBounds.height - windowSize.height;
3301 }
3302 // top
3303 if (dy < gcBounds.y) {
3304 dy = gcBounds.y;
3305 }
3306 // right
3307 if (dx + windowSize.width > gcBounds.x + gcBounds.width) {
3308 dx = gcBounds.x + gcBounds.width - windowSize.width;
3309 }
3310 // left
3311 if (dx < gcBounds.x) {
3312 dx = gcBounds.x;
3313 }
3314
3315 setLocation(dx, dy);
3316 }
3317
3318 /**
3319 * Overridden from Component. Top-level Windows should not propagate a
3320 * MouseWheelEvent beyond themselves into their owning Windows.
3321 */
3322 void deliverMouseWheelToAncestor(MouseWheelEvent e) {}
3323
3324 /**
3325 * Overridden from Component. Top-level Windows don't dispatch to ancestors
3326 */
3327 boolean dispatchMouseWheelToAncestor(MouseWheelEvent e) {return false;}
3328
3329 /**
3330 * Creates a new strategy for multi-buffering on this component.
3331 * Multi-buffering is useful for rendering performance. This method
3332 * attempts to create the best strategy available with the number of
3333 * buffers supplied. It will always create a {@code BufferStrategy}
3334 * with that number of buffers.
3335 * A page-flipping strategy is attempted first, then a blitting strategy
3336 * using accelerated buffers. Finally, an unaccelerated blitting
3337 * strategy is used.
3338 * <p>
3339 * Each time this method is called,
3340 * the existing buffer strategy for this component is discarded.
3341 * @param numBuffers number of buffers to create
3342 * @exception IllegalArgumentException if numBuffers is less than 1.
3343 * @exception IllegalStateException if the component is not displayable
3344 * @see #isDisplayable
3345 * @see #getBufferStrategy
3346 * @since 1.4
3347 */
3348 public void createBufferStrategy(int numBuffers) {
3349 super.createBufferStrategy(numBuffers);
3350 }
3351
3352 /**
3353 * Creates a new strategy for multi-buffering on this component with the
3354 * required buffer capabilities. This is useful, for example, if only
3355 * accelerated memory or page flipping is desired (as specified by the
3356 * buffer capabilities).
3357 * <p>
3358 * Each time this method
3359 * is called, the existing buffer strategy for this component is discarded.
3360 * @param numBuffers number of buffers to create, including the front buffer
3361 * @param caps the required capabilities for creating the buffer strategy;
3362 * cannot be {@code null}
3363 * @exception AWTException if the capabilities supplied could not be
3364 * supported or met; this may happen, for example, if there is not enough
3365 * accelerated memory currently available, or if page flipping is specified
3366 * but not possible.
3367 * @exception IllegalArgumentException if numBuffers is less than 1, or if
3368 * caps is {@code null}
3369 * @see #getBufferStrategy
3370 * @since 1.4
3371 */
3372 public void createBufferStrategy(int numBuffers,
3373 BufferCapabilities caps) throws AWTException {
3374 super.createBufferStrategy(numBuffers, caps);
3375 }
3376
3377 /**
3378 * Returns the {@code BufferStrategy} used by this component. This
3379 * method will return null if a {@code BufferStrategy} has not yet
3380 * been created or has been disposed.
3381 *
3382 * @return the buffer strategy used by this component
3383 * @see #createBufferStrategy
3384 * @since 1.4
3385 */
3386 public BufferStrategy getBufferStrategy() {
3387 return super.getBufferStrategy();
3388 }
3389
3390 Component getTemporaryLostComponent() {
3391 return temporaryLostComponent;
3392 }
3393 Component setTemporaryLostComponent(Component component) {
3394 Component previousComp = temporaryLostComponent;
3395 // Check that "component" is an acceptable focus owner and don't store it otherwise
3396 // - or later we will have problems with opposite while handling WINDOW_GAINED_FOCUS
3397 if (component == null || component.canBeFocusOwner()) {
3398 temporaryLostComponent = component;
3399 } else {
3400 temporaryLostComponent = null;
3401 }
3402 return previousComp;
3403 }
3404
3405 /**
3406 * Checks whether this window can contain focus owner.
3407 * Verifies that it is focusable and as container it can container focus owner.
3408 * @since 1.5
3409 */
3410 boolean canContainFocusOwner(Component focusOwnerCandidate) {
3411 return super.canContainFocusOwner(focusOwnerCandidate) && isFocusableWindow();
3412 }
3413
3414 private boolean locationByPlatform = locationByPlatformProp;
3415
3416
3417 /**
3418 * Sets whether this Window should appear at the default location for the
3419 * native windowing system or at the current location (returned by
3420 * {@code getLocation}) the next time the Window is made visible.
3421 * This behavior resembles a native window shown without programmatically
3422 * setting its location. Most windowing systems cascade windows if their
3423 * locations are not explicitly set. The actual location is determined once the
3424 * window is shown on the screen.
3425 * <p>
3426 * This behavior can also be enabled by setting the System Property
3427 * "java.awt.Window.locationByPlatform" to "true", though calls to this method
3428 * take precedence.
3429 * <p>
3430 * Calls to {@code setVisible}, {@code setLocation} and
3431 * {@code setBounds} after calling {@code setLocationByPlatform} clear
3432 * this property of the Window.
3433 * <p>
3434 * For example, after the following code is executed:
3435 * <pre>
3436 * setLocationByPlatform(true);
3437 * setVisible(true);
3438 * boolean flag = isLocationByPlatform();
3439 * </pre>
3440 * The window will be shown at platform's default location and
3441 * {@code flag} will be {@code false}.
3442 * <p>
3443 * In the following sample:
3444 * <pre>
3445 * setLocationByPlatform(true);
3446 * setLocation(10, 10);
3447 * boolean flag = isLocationByPlatform();
3448 * setVisible(true);
3449 * </pre>
3450 * The window will be shown at (10, 10) and {@code flag} will be
3451 * {@code false}.
3452 *
3453 * @param locationByPlatform {@code true} if this Window should appear
3454 * at the default location, {@code false} if at the current location
3455 * @throws IllegalComponentStateException if the window
3456 * is showing on screen and locationByPlatform is {@code true}.
3457 * @see #setLocation
3458 * @see #isShowing
3459 * @see #setVisible
3460 * @see #isLocationByPlatform
3461 * @see java.lang.System#getProperty(String)
3462 * @since 1.5
3463 */
3464 public void setLocationByPlatform(boolean locationByPlatform) {
3465 synchronized (getTreeLock()) {
3466 if (locationByPlatform && isShowing()) {
3467 throw new IllegalComponentStateException("The window is showing on screen.");
3468 }
3469 this.locationByPlatform = locationByPlatform;
3470 }
3471 }
3472
3473 /**
3474 * Returns {@code true} if this Window will appear at the default location
3475 * for the native windowing system the next time this Window is made visible.
3476 * This method always returns {@code false} if the Window is showing on the
3477 * screen.
3478 *
3479 * @return whether this Window will appear at the default location
3480 * @see #setLocationByPlatform
3481 * @see #isShowing
3482 * @since 1.5
3483 */
3484 public boolean isLocationByPlatform() {
3485 synchronized (getTreeLock()) {
3486 return locationByPlatform;
3487 }
3488 }
3489
3490 /**
3491 * {@inheritDoc}
3492 * <p>
3493 * The {@code width} or {@code height} values
3494 * are automatically enlarged if either is less than
3495 * the minimum size as specified by previous call to
3496 * {@code setMinimumSize}.
3497 * <p>
3498 * The method changes the geometry-related data. Therefore,
3499 * the native windowing system may ignore such requests, or it may modify
3500 * the requested data, so that the {@code Window} object is placed and sized
3501 * in a way that corresponds closely to the desktop settings.
3502 *
3503 * @see #getBounds
3504 * @see #setLocation(int, int)
3505 * @see #setLocation(Point)
3506 * @see #setSize(int, int)
3507 * @see #setSize(Dimension)
3508 * @see #setMinimumSize
3509 * @see #setLocationByPlatform
3510 * @see #isLocationByPlatform
3511 * @since 1.6
3512 */
3513 public void setBounds(int x, int y, int width, int height) {
3514 synchronized (getTreeLock()) {
3515 if (getBoundsOp() == ComponentPeer.SET_LOCATION ||
3516 getBoundsOp() == ComponentPeer.SET_BOUNDS)
3517 {
3518 locationByPlatform = false;
3519 }
3520 super.setBounds(x, y, width, height);
3521 }
3522 }
3523
3524 /**
3525 * {@inheritDoc}
3526 * <p>
3527 * The {@code r.width} or {@code r.height} values
3528 * will be automatically enlarged if either is less than
3529 * the minimum size as specified by previous call to
3530 * {@code setMinimumSize}.
3531 * <p>
3532 * The method changes the geometry-related data. Therefore,
3533 * the native windowing system may ignore such requests, or it may modify
3534 * the requested data, so that the {@code Window} object is placed and sized
3535 * in a way that corresponds closely to the desktop settings.
3536 *
3537 * @see #getBounds
3538 * @see #setLocation(int, int)
3539 * @see #setLocation(Point)
3540 * @see #setSize(int, int)
3541 * @see #setSize(Dimension)
3542 * @see #setMinimumSize
3543 * @see #setLocationByPlatform
3544 * @see #isLocationByPlatform
3545 * @since 1.6
3546 */
3547 public void setBounds(Rectangle r) {
3548 setBounds(r.x, r.y, r.width, r.height);
3549 }
3550
3551 /**
3552 * Determines whether this component will be displayed on the screen.
3553 * @return {@code true} if the component and all of its ancestors
3554 * until a toplevel window are visible, {@code false} otherwise
3555 */
3556 boolean isRecursivelyVisible() {
3557 // 5079694 fix: for a toplevel to be displayed, its parent doesn't have to be visible.
3558 // We're overriding isRecursivelyVisible to implement this policy.
3559 return visible;
3560 }
3561
3562
3563 // ******************** SHAPES & TRANSPARENCY CODE ********************
3564
3565 /**
3566 * Returns the opacity of the window.
3567 *
3568 * @return the opacity of the window
3569 *
3570 * @see Window#setOpacity(float)
3571 * @see GraphicsDevice.WindowTranslucency
3572 *
3573 * @since 1.7
3574 */
3575 public float getOpacity() {
3576 synchronized (getTreeLock()) {
3577 return opacity;
3578 }
3579 }
3580
3581 /**
3582 * Sets the opacity of the window.
3583 * <p>
3584 * The opacity value is in the range [0..1]. Note that setting the opacity
3585 * level of 0 may or may not disable the mouse event handling on this
3586 * window. This is a platform-dependent behavior.
3587 * <p>
3588 * The following conditions must be met in order to set the opacity value
3589 * less than {@code 1.0f}:
3590 * <ul>
3591 * <li>The {@link GraphicsDevice.WindowTranslucency#TRANSLUCENT TRANSLUCENT}
3592 * translucency must be supported by the underlying system
3593 * <li>The window must be undecorated (see {@link Frame#setUndecorated}
3594 * and {@link Dialog#setUndecorated})
3595 * <li>The window must not be in full-screen mode (see {@link
3596 * GraphicsDevice#setFullScreenWindow(Window)})
3597 * </ul>
3598 * <p>
3599 * If the requested opacity value is less than {@code 1.0f}, and any of the
3600 * above conditions are not met, the window opacity will not change,
3601 * and the {@code IllegalComponentStateException} will be thrown.
3602 * <p>
3603 * The translucency levels of individual pixels may also be effected by the
3604 * alpha component of their color (see {@link Window#setBackground(Color)}) and the
3605 * current shape of this window (see {@link #setShape(Shape)}).
3606 *
3607 * @param opacity the opacity level to set to the window
3608 *
3609 * @throws IllegalArgumentException if the opacity is out of the range
3610 * [0..1]
3611 * @throws IllegalComponentStateException if the window is decorated and
3612 * the opacity is less than {@code 1.0f}
3613 * @throws IllegalComponentStateException if the window is in full screen
3614 * mode, and the opacity is less than {@code 1.0f}
3615 * @throws UnsupportedOperationException if the {@code
3616 * GraphicsDevice.WindowTranslucency#TRANSLUCENT TRANSLUCENT}
3617 * translucency is not supported and the opacity is less than
3618 * {@code 1.0f}
3619 *
3620 * @see Window#getOpacity
3621 * @see Window#setBackground(Color)
3622 * @see Window#setShape(Shape)
3623 * @see Frame#isUndecorated
3624 * @see Dialog#isUndecorated
3625 * @see GraphicsDevice.WindowTranslucency
3626 * @see GraphicsDevice#isWindowTranslucencySupported(GraphicsDevice.WindowTranslucency)
3627 *
3628 * @since 1.7
3629 */
3630 @SuppressWarnings("deprecation")
3631 public void setOpacity(float opacity) {
3632 synchronized (getTreeLock()) {
3633 if (opacity < 0.0f || opacity > 1.0f) {
3634 throw new IllegalArgumentException(
3635 "The value of opacity should be in the range [0.0f .. 1.0f].");
3636 }
3637 if (opacity < 1.0f) {
3638 GraphicsConfiguration gc = getGraphicsConfiguration();
3639 GraphicsDevice gd = gc.getDevice();
3640 if (gc.getDevice().getFullScreenWindow() == this) {
3641 throw new IllegalComponentStateException(
3642 "Setting opacity for full-screen window is not supported.");
3643 }
3644 if (!gd.isWindowTranslucencySupported(
3645 GraphicsDevice.WindowTranslucency.TRANSLUCENT))
3646 {
3647 throw new UnsupportedOperationException(
3648 "TRANSLUCENT translucency is not supported.");
3649 }
3650 }
3651 this.opacity = opacity;
3652 WindowPeer peer = (WindowPeer)getPeer();
3653 if (peer != null) {
3654 peer.setOpacity(opacity);
3655 }
3656 }
3657 }
3658
3659 /**
3660 * Returns the shape of the window.
3661 *
3662 * The value returned by this method may not be the same as
3663 * previously set with {@code setShape(shape)}, but it is guaranteed
3664 * to represent the same shape.
3665 *
3666 * @return the shape of the window or {@code null} if no
3667 * shape is specified for the window
3668 *
3669 * @see Window#setShape(Shape)
3670 * @see GraphicsDevice.WindowTranslucency
3671 *
3672 * @since 1.7
3673 */
3674 public Shape getShape() {
3675 synchronized (getTreeLock()) {
3676 return shape == null ? null : new Path2D.Float(shape);
3677 }
3678 }
3679
3680 /**
3681 * Sets the shape of the window.
3682 * <p>
3683 * Setting a shape cuts off some parts of the window. Only the parts that
3684 * belong to the given {@link Shape} remain visible and clickable. If
3685 * the shape argument is {@code null}, this method restores the default
3686 * shape, making the window rectangular on most platforms.
3687 * <p>
3688 * The following conditions must be met to set a non-null shape:
3689 * <ul>
3690 * <li>The {@link GraphicsDevice.WindowTranslucency#PERPIXEL_TRANSPARENT
3691 * PERPIXEL_TRANSPARENT} translucency must be supported by the
3692 * underlying system
3693 * <li>The window must be undecorated (see {@link Frame#setUndecorated}
3694 * and {@link Dialog#setUndecorated})
3695 * <li>The window must not be in full-screen mode (see {@link
3696 * GraphicsDevice#setFullScreenWindow(Window)})
3697 * </ul>
3698 * <p>
3699 * If the requested shape is not {@code null}, and any of the above
3700 * conditions are not met, the shape of this window will not change,
3701 * and either the {@code UnsupportedOperationException} or {@code
3702 * IllegalComponentStateException} will be thrown.
3703 * <p>
3704 * The translucency levels of individual pixels may also be effected by the
3705 * alpha component of their color (see {@link Window#setBackground(Color)}) and the
3706 * opacity value (see {@link #setOpacity(float)}). See {@link
3707 * GraphicsDevice.WindowTranslucency} for more details.
3708 *
3709 * @param shape the shape to set to the window
3710 *
3711 * @throws IllegalComponentStateException if the shape is not {@code
3712 * null} and the window is decorated
3713 * @throws IllegalComponentStateException if the shape is not {@code
3714 * null} and the window is in full-screen mode
3715 * @throws UnsupportedOperationException if the shape is not {@code
3716 * null} and {@link GraphicsDevice.WindowTranslucency#PERPIXEL_TRANSPARENT
3717 * PERPIXEL_TRANSPARENT} translucency is not supported
3718 *
3719 * @see Window#getShape()
3720 * @see Window#setBackground(Color)
3721 * @see Window#setOpacity(float)
3722 * @see Frame#isUndecorated
3723 * @see Dialog#isUndecorated
3724 * @see GraphicsDevice.WindowTranslucency
3725 * @see GraphicsDevice#isWindowTranslucencySupported(GraphicsDevice.WindowTranslucency)
3726 *
3727 * @since 1.7
3728 */
3729 @SuppressWarnings("deprecation")
3730 public void setShape(Shape shape) {
3731 synchronized (getTreeLock()) {
3732 if (shape != null) {
3733 GraphicsConfiguration gc = getGraphicsConfiguration();
3734 GraphicsDevice gd = gc.getDevice();
3735 if (gc.getDevice().getFullScreenWindow() == this) {
3736 throw new IllegalComponentStateException(
3737 "Setting shape for full-screen window is not supported.");
3738 }
3739 if (!gd.isWindowTranslucencySupported(
3740 GraphicsDevice.WindowTranslucency.PERPIXEL_TRANSPARENT))
3741 {
3742 throw new UnsupportedOperationException(
3743 "PERPIXEL_TRANSPARENT translucency is not supported.");
3744 }
3745 }
3746 this.shape = (shape == null) ? null : new Path2D.Float(shape);
3747 WindowPeer peer = (WindowPeer)getPeer();
3748 if (peer != null) {
3749 peer.applyShape(shape == null ? null : Region.getInstance(shape, null));
3750 }
3751 }
3752 }
3753
3754 /**
3755 * Gets the background color of this window.
3756 * <p>
3757 * Note that the alpha component of the returned color indicates whether
3758 * the window is in the non-opaque (per-pixel translucent) mode.
3759 *
3760 * @return this component's background color
3761 *
3762 * @see Window#setBackground(Color)
3763 * @see Window#isOpaque
3764 * @see GraphicsDevice.WindowTranslucency
3765 */
3766 @Override
3767 public Color getBackground() {
3768 return super.getBackground();
3769 }
3770
3771 /**
3772 * Sets the background color of this window.
3773 * <p>
3774 * If the windowing system supports the {@link
3775 * GraphicsDevice.WindowTranslucency#PERPIXEL_TRANSLUCENT PERPIXEL_TRANSLUCENT}
3776 * translucency, the alpha component of the given background color
3777 * may effect the mode of operation for this window: it indicates whether
3778 * this window must be opaque (alpha equals {@code 1.0f}) or per-pixel translucent
3779 * (alpha is less than {@code 1.0f}). If the given background color is
3780 * {@code null}, the window is considered completely opaque.
3781 * <p>
3782 * All the following conditions must be met to enable the per-pixel
3783 * transparency mode for this window:
3784 * <ul>
3785 * <li>The {@link GraphicsDevice.WindowTranslucency#PERPIXEL_TRANSLUCENT
3786 * PERPIXEL_TRANSLUCENT} translucency must be supported by the graphics
3787 * device where this window is located
3788 * <li>The window must be undecorated (see {@link Frame#setUndecorated}
3789 * and {@link Dialog#setUndecorated})
3790 * <li>The window must not be in full-screen mode (see {@link
3791 * GraphicsDevice#setFullScreenWindow(Window)})
3792 * </ul>
3793 * <p>
3794 * If the alpha component of the requested background color is less than
3795 * {@code 1.0f}, and any of the above conditions are not met, the background
3796 * color of this window will not change, the alpha component of the given
3797 * background color will not affect the mode of operation for this window,
3798 * and either the {@code UnsupportedOperationException} or {@code
3799 * IllegalComponentStateException} will be thrown.
3800 * <p>
3801 * When the window is per-pixel translucent, the drawing sub-system
3802 * respects the alpha value of each individual pixel. If a pixel gets
3803 * painted with the alpha color component equal to zero, it becomes
3804 * visually transparent. If the alpha of the pixel is equal to 1.0f, the
3805 * pixel is fully opaque. Interim values of the alpha color component make
3806 * the pixel semi-transparent. In this mode, the background of the window
3807 * gets painted with the alpha value of the given background color. If the
3808 * alpha value of the argument of this method is equal to {@code 0}, the
3809 * background is not painted at all.
3810 * <p>
3811 * The actual level of translucency of a given pixel also depends on window
3812 * opacity (see {@link #setOpacity(float)}), as well as the current shape of
3813 * this window (see {@link #setShape(Shape)}).
3814 * <p>
3815 * Note that painting a pixel with the alpha value of {@code 0} may or may
3816 * not disable the mouse event handling on this pixel. This is a
3817 * platform-dependent behavior. To make sure the mouse events do not get
3818 * dispatched to a particular pixel, the pixel must be excluded from the
3819 * shape of the window.
3820 * <p>
3821 * Enabling the per-pixel translucency mode may change the graphics
3822 * configuration of this window due to the native platform requirements.
3823 *
3824 * @param bgColor the color to become this window's background color.
3825 *
3826 * @throws IllegalComponentStateException if the alpha value of the given
3827 * background color is less than {@code 1.0f} and the window is decorated
3828 * @throws IllegalComponentStateException if the alpha value of the given
3829 * background color is less than {@code 1.0f} and the window is in
3830 * full-screen mode
3831 * @throws UnsupportedOperationException if the alpha value of the given
3832 * background color is less than {@code 1.0f} and {@link
3833 * GraphicsDevice.WindowTranslucency#PERPIXEL_TRANSLUCENT
3834 * PERPIXEL_TRANSLUCENT} translucency is not supported
3835 *
3836 * @see Window#getBackground
3837 * @see Window#isOpaque
3838 * @see Window#setOpacity(float)
3839 * @see Window#setShape(Shape)
3840 * @see Frame#isUndecorated
3841 * @see Dialog#isUndecorated
3842 * @see GraphicsDevice.WindowTranslucency
3843 * @see GraphicsDevice#isWindowTranslucencySupported(GraphicsDevice.WindowTranslucency)
3844 * @see GraphicsConfiguration#isTranslucencyCapable()
3845 */
3846 @Override
3847 @SuppressWarnings("deprecation")
3848 public void setBackground(Color bgColor) {
3849 Color oldBg = getBackground();
3850 super.setBackground(bgColor);
3851 if (oldBg != null && oldBg.equals(bgColor)) {
3852 return;
3853 }
3854 int oldAlpha = oldBg != null ? oldBg.getAlpha() : 255;
3855 int alpha = bgColor != null ? bgColor.getAlpha() : 255;
3856 if ((oldAlpha == 255) && (alpha < 255)) { // non-opaque window
3857 GraphicsConfiguration gc = getGraphicsConfiguration();
3858 GraphicsDevice gd = gc.getDevice();
3859 if (gc.getDevice().getFullScreenWindow() == this) {
3860 throw new IllegalComponentStateException(
3861 "Making full-screen window non opaque is not supported.");
3862 }
3863 if (!gc.isTranslucencyCapable()) {
3864 GraphicsConfiguration capableGC = gd.getTranslucencyCapableGC();
3865 if (capableGC == null) {
3866 throw new UnsupportedOperationException(
3867 "PERPIXEL_TRANSLUCENT translucency is not supported");
3868 }
3869 setGraphicsConfiguration(capableGC);
3870 }
3871 setLayersOpaque(this, false);
3872 } else if ((oldAlpha < 255) && (alpha == 255)) {
3873 setLayersOpaque(this, true);
3874 }
3875 WindowPeer peer = (WindowPeer)getPeer();
3876 if (peer != null) {
3877 peer.setOpaque(alpha == 255);
3878 }
3879 }
3880
3881 /**
3882 * Indicates if the window is currently opaque.
3883 * <p>
3884 * The method returns {@code false} if the background color of the window
3885 * is not {@code null} and the alpha component of the color is less than
3886 * {@code 1.0f}. The method returns {@code true} otherwise.
3887 *
3888 * @return {@code true} if the window is opaque, {@code false} otherwise
3889 *
3890 * @see Window#getBackground
3891 * @see Window#setBackground(Color)
3892 * @since 1.7
3893 */
3894 @Override
3895 public boolean isOpaque() {
3896 Color bg = getBackground();
3897 return bg != null ? bg.getAlpha() == 255 : true;
3898 }
3899
3900 @SuppressWarnings("deprecation")
3901 private void updateWindow() {
3902 synchronized (getTreeLock()) {
3903 WindowPeer peer = (WindowPeer)getPeer();
3904 if (peer != null) {
3905 peer.updateWindow();
3906 }
3907 }
3908 }
3909
3910 /**
3911 * {@inheritDoc}
3912 *
3913 * @since 1.7
3914 */
3915 @Override
3916 public void paint(Graphics g) {
3917 if (!isOpaque()) {
3918 Graphics gg = g.create();
3919 try {
3920 if (gg instanceof Graphics2D) {
3921 gg.setColor(getBackground());
3922 ((Graphics2D)gg).setComposite(AlphaComposite.getInstance(AlphaComposite.SRC));
3923 gg.fillRect(0, 0, getWidth(), getHeight());
3924 }
3925 } finally {
3926 gg.dispose();
3927 }
3928 }
3929 super.paint(g);
3930 }
3931
3932 private static void setLayersOpaque(Component component, boolean isOpaque) {
3933 // Shouldn't use instanceof to avoid loading Swing classes
3934 // if it's a pure AWT application.
3935 if (SunToolkit.isInstanceOf(component, "javax.swing.RootPaneContainer")) {
3936 javax.swing.RootPaneContainer rpc = (javax.swing.RootPaneContainer)component;
3937 javax.swing.JRootPane root = rpc.getRootPane();
3938 javax.swing.JLayeredPane lp = root.getLayeredPane();
3939 Container c = root.getContentPane();
3940 javax.swing.JComponent content =
3941 (c instanceof javax.swing.JComponent) ? (javax.swing.JComponent)c : null;
3942 lp.setOpaque(isOpaque);
3943 root.setOpaque(isOpaque);
3944 if (content != null) {
3945 content.setOpaque(isOpaque);
3946
3947 // Iterate down one level to see whether we have a JApplet
3948 // (which is also a RootPaneContainer) which requires processing
3949 int numChildren = content.getComponentCount();
3950 if (numChildren > 0) {
3951 Component child = content.getComponent(0);
3952 // It's OK to use instanceof here because we've
3953 // already loaded the RootPaneContainer class by now
3954 if (child instanceof javax.swing.RootPaneContainer) {
3955 setLayersOpaque(child, isOpaque);
3956 }
3957 }
3958 }
3959 }
3960 }
3961
3962
3963 // ************************** MIXING CODE *******************************
3964
3965 // A window has an owner, but it does NOT have a container
3966 @Override
3967 final Container getContainer() {
3968 return null;
3969 }
3970
3971 /**
3972 * Applies the shape to the component
3973 * @param shape Shape to be applied to the component
3974 */
3975 @Override
3976 final void applyCompoundShape(Region shape) {
3977 // The shape calculated by mixing code is not intended to be applied
3978 // to windows or frames
3979 }
3980
3981 @Override
3982 final void applyCurrentShape() {
3983 // The shape calculated by mixing code is not intended to be applied
3984 // to windows or frames
3985 }
3986
3987 @Override
3988 final void mixOnReshaping() {
3989 // The shape calculated by mixing code is not intended to be applied
3990 // to windows or frames
3991 }
3992
3993 @Override
3994 final Point getLocationOnWindow() {
3995 return new Point(0, 0);
3996 }
3997
3998 // ****************** END OF MIXING CODE ********************************
3999
4000 /**
4001 * Limit the given double value with the given range.
4002 */
4003 private static double limit(double value, double min, double max) {
4004 value = Math.max(value, min);
4005 value = Math.min(value, max);
4006 return value;
4007 }
4008
4009 /**
4010 * Calculate the position of the security warning.
4011 *
4012 * This method gets the window location/size as reported by the native
4013 * system since the locally cached values may represent outdated data.
4014 *
4015 * The method is used from the native code, or via AWTAccessor.
4016 *
4017 * NOTE: this method is invoked on the toolkit thread, and therefore is not
4018 * supposed to become public/user-overridable.
4019 */
4020 private Point2D calculateSecurityWarningPosition(double x, double y,
4021 double w, double h)
4022 {
4023 // The position according to the spec of SecurityWarning.setPosition()
4024 double wx = x + w * securityWarningAlignmentX + securityWarningPointX;
4025 double wy = y + h * securityWarningAlignmentY + securityWarningPointY;
4026
4027 // First, make sure the warning is not too far from the window bounds
4028 wx = Window.limit(wx,
4029 x - securityWarningWidth - 2,
4030 x + w + 2);
4031 wy = Window.limit(wy,
4032 y - securityWarningHeight - 2,
4033 y + h + 2);
4034
4035 // Now make sure the warning window is visible on the screen
4036 GraphicsConfiguration graphicsConfig =
4037 getGraphicsConfiguration_NoClientCode();
4038 Rectangle screenBounds = graphicsConfig.getBounds();
4039 Insets screenInsets =
4040 Toolkit.getDefaultToolkit().getScreenInsets(graphicsConfig);
4041
4042 wx = Window.limit(wx,
4043 screenBounds.x + screenInsets.left,
4044 screenBounds.x + screenBounds.width - screenInsets.right
4045 - securityWarningWidth);
4046 wy = Window.limit(wy,
4047 screenBounds.y + screenInsets.top,
4048 screenBounds.y + screenBounds.height - screenInsets.bottom
4049 - securityWarningHeight);
4050
4051 return new Point2D.Double(wx, wy);
4052 }
4053
4054 static {
4055 AWTAccessor.setWindowAccessor(new AWTAccessor.WindowAccessor() {
4056 public float getOpacity(Window window) {
4057 return window.opacity;
4058 }
4059 public void setOpacity(Window window, float opacity) {
4060 window.setOpacity(opacity);
4061 }
4062 public Shape getShape(Window window) {
4063 return window.getShape();
4064 }
4065 public void setShape(Window window, Shape shape) {
4066 window.setShape(shape);
4067 }
4068 public void setOpaque(Window window, boolean opaque) {
4069 Color bg = window.getBackground();
4070 if (bg == null) {
4071 bg = new Color(0, 0, 0, 0);
4072 }
4073 window.setBackground(new Color(bg.getRed(), bg.getGreen(), bg.getBlue(),
4074 opaque ? 255 : 0));
4075 }
4076 public void updateWindow(Window window) {
4077 window.updateWindow();
4078 }
4079
4080 public Dimension getSecurityWarningSize(Window window) {
4081 return new Dimension(window.securityWarningWidth,
4082 window.securityWarningHeight);
4083 }
4084
4085 public void setSecurityWarningSize(Window window, int width, int height)
4086 {
4087 window.securityWarningWidth = width;
4088 window.securityWarningHeight = height;
4089 }
4090
4091 @SuppressWarnings("deprecation")
4092 public void setSecurityWarningPosition(Window window,
4093 Point2D point, float alignmentX, float alignmentY)
4094 {
4095 window.securityWarningPointX = point.getX();
4096 window.securityWarningPointY = point.getY();
4097 window.securityWarningAlignmentX = alignmentX;
4098 window.securityWarningAlignmentY = alignmentY;
4099
4100 synchronized (window.getTreeLock()) {
4101 WindowPeer peer = (WindowPeer)window.getPeer();
4102 if (peer != null) {
4103 peer.repositionSecurityWarning();
4104 }
4105 }
4106 }
4107
4108 public Point2D calculateSecurityWarningPosition(Window window,
4109 double x, double y, double w, double h)
4110 {
4111 return window.calculateSecurityWarningPosition(x, y, w, h);
4112 }
4113
4114 public void setLWRequestStatus(Window changed, boolean status) {
4115 changed.syncLWRequests = status;
4116 }
4117
4118 public boolean isAutoRequestFocus(Window w) {
4119 return w.autoRequestFocus;
4120 }
4121
4122 public boolean isTrayIconWindow(Window w) {
4123 return w.isTrayIconWindow;
4124 }
4125
4126 public void setTrayIconWindow(Window w, boolean isTrayIconWindow) {
4127 w.isTrayIconWindow = isTrayIconWindow;
4128 }
4129 }); // WindowAccessor
4130 } // static
4131
4132 // a window doesn't need to be updated in the Z-order.
4133 @Override
4134 void updateZOrder() {}
4135
4136 } // class Window
4137
4138
4139 /**
4140 * This class is no longer used, but is maintained for Serialization
4141 * backward-compatibility.
4142 */
4143 class FocusManager implements java.io.Serializable {
4144 Container focusRoot;
4145 Component focusOwner;
4146
4147 /*
4148 * JDK 1.1 serialVersionUID
4149 */
4150 static final long serialVersionUID = 2491878825643557906L;
4151 }