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1   /*
2    * Copyright (c) 1995, 2013, Oracle and/or its affiliates. All rights reserved.
3    * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4    *
5    * This code is free software; you can redistribute it and/or modify it
6    * under the terms of the GNU General Public License version 2 only, as
7    * published by the Free Software Foundation.  Oracle designates this
8    * particular file as subject to the "Classpath" exception as provided
9    * by Oracle in the LICENSE file that accompanied this code.
10   *
11   * This code is distributed in the hope that it will be useful, but WITHOUT
12   * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13   * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
14   * version 2 for more details (a copy is included in the LICENSE file that
15   * accompanied this code).
16   *
17   * You should have received a copy of the GNU General Public License version
18   * 2 along with this work; if not, write to the Free Software Foundation,
19   * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20   *
21   * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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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.AppContext;
55  import sun.awt.CausedFocusEvent;
56  import sun.awt.SunToolkit;
57  import sun.awt.util.IdentityArrayList;
58  import sun.java2d.Disposer;
59  import sun.java2d.pipe.Region;
60  import sun.security.action.GetPropertyAction;
61  import sun.security.util.SecurityConstants;
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       JDK1.0
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 platfrom-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&lt;Image&gt; imageList = new ArrayList&lt;Image&gt;();
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 JDK1.0
757      */
758     public void addNotify() {
759         synchronized (getTreeLock()) {
760             Container parent = this.parent;
761             if (parent != null && parent.getPeer() == null) {
762                 parent.addNotify();
763             }
764             if (peer == null) {
765                 peer = getToolkit().createWindow(this);
766             }
767             synchronized (allWindows) {
768                 allWindows.add(this);
769             }
770             super.addNotify();
771         }
772     }
773 
774     /**
775      * {@inheritDoc}
776      */
777     public void removeNotify() {
778         synchronized (getTreeLock()) {
779             synchronized (allWindows) {
780                 allWindows.remove(this);
781             }
782             super.removeNotify();
783         }
784     }
785 
786     /**
787      * Causes this Window to be sized to fit the preferred size
788      * and layouts of its subcomponents. The resulting width and
789      * height of the window are automatically enlarged if either
790      * of dimensions is less than the minimum size as specified
791      * by the previous call to the {@code setMinimumSize} method.
792      * <p>
793      * If the window and/or its owner are not displayable yet,
794      * both of them are made displayable before calculating
795      * the preferred size. The Window is validated after its
796      * size is being calculated.
797      *
798      * @see Component#isDisplayable
799      * @see #setMinimumSize
800      */
801     public void pack() {
802         Container parent = this.parent;
803         if (parent != null && parent.getPeer() == null) {
804             parent.addNotify();
805         }
806         if (peer == null) {
807             addNotify();
808         }
809         Dimension newSize = getPreferredSize();
810         if (peer != null) {
811             setClientSize(newSize.width, newSize.height);
812         }
813 
814         if(beforeFirstShow) {
815             isPacked = true;
816         }
817 
818         validateUnconditionally();
819     }
820 
821     /**
822      * Sets the minimum size of this window to a constant
823      * value.  Subsequent calls to {@code getMinimumSize}
824      * will always return this value. If current window's
825      * size is less than {@code minimumSize} the size of the
826      * window is automatically enlarged to honor the minimum size.
827      * <p>
828      * If the {@code setSize} or {@code setBounds} methods
829      * are called afterwards with a width or height less than
830      * that was specified by the {@code setMinimumSize} method
831      * the window is automatically enlarged to meet
832      * the {@code minimumSize} value. The {@code minimumSize}
833      * value also affects the behaviour of the {@code pack} method.
834      * <p>
835      * The default behavior is restored by setting the minimum size
836      * parameter to the {@code null} value.
837      * <p>
838      * Resizing operation may be restricted if the user tries
839      * to resize window below the {@code minimumSize} value.
840      * This behaviour is platform-dependent.
841      *
842      * @param minimumSize the new minimum size of this window
843      * @see Component#setMinimumSize
844      * @see #getMinimumSize
845      * @see #isMinimumSizeSet
846      * @see #setSize(Dimension)
847      * @see #pack
848      * @since 1.6
849      */
850     public void setMinimumSize(Dimension minimumSize) {
851         synchronized (getTreeLock()) {
852             super.setMinimumSize(minimumSize);
853             Dimension size = getSize();
854             if (isMinimumSizeSet()) {
855                 if (size.width < minimumSize.width || size.height < minimumSize.height) {
856                     int nw = Math.max(width, minimumSize.width);
857                     int nh = Math.max(height, minimumSize.height);
858                     setSize(nw, nh);
859                 }
860             }
861             if (peer != null) {
862                 ((WindowPeer)peer).updateMinimumSize();
863             }
864         }
865     }
866 
867     /**
868      * {@inheritDoc}
869      * <p>
870      * The {@code d.width} and {@code d.height} values
871      * are automatically enlarged if either is less than
872      * the minimum size as specified by previous call to
873      * {@code setMinimumSize}.
874      * <p>
875      * The method changes the geometry-related data. Therefore,
876      * the native windowing system may ignore such requests, or it may modify
877      * the requested data, so that the {@code Window} object is placed and sized
878      * in a way that corresponds closely to the desktop settings.
879      *
880      * @see #getSize
881      * @see #setBounds
882      * @see #setMinimumSize
883      * @since 1.6
884      */
885     public void setSize(Dimension d) {
886         super.setSize(d);
887     }
888 
889     /**
890      * {@inheritDoc}
891      * <p>
892      * The {@code width} and {@code height} values
893      * are automatically enlarged if either is less than
894      * the minimum size as specified by previous call to
895      * {@code setMinimumSize}.
896      * <p>
897      * The method changes the geometry-related data. Therefore,
898      * the native windowing system may ignore such requests, or it may modify
899      * the requested data, so that the {@code Window} object is placed and sized
900      * in a way that corresponds closely to the desktop settings.
901      *
902      * @see #getSize
903      * @see #setBounds
904      * @see #setMinimumSize
905      * @since 1.6
906      */
907     public void setSize(int width, int height) {
908         super.setSize(width, height);
909     }
910 
911     /**
912      * {@inheritDoc}
913      * <p>
914      * The method changes the geometry-related data. Therefore,
915      * the native windowing system may ignore such requests, or it may modify
916      * the requested data, so that the {@code Window} object is placed and sized
917      * in a way that corresponds closely to the desktop settings.
918      */
919     @Override
920     public void setLocation(int x, int y) {
921         super.setLocation(x, y);
922     }
923 
924     /**
925      * {@inheritDoc}
926      * <p>
927      * The method changes the geometry-related data. Therefore,
928      * the native windowing system may ignore such requests, or it may modify
929      * the requested data, so that the {@code Window} object is placed and sized
930      * in a way that corresponds closely to the desktop settings.
931      */
932     @Override
933     public void setLocation(Point p) {
934         super.setLocation(p);
935     }
936 
937     /**
938      * @deprecated As of JDK version 1.1,
939      * replaced by {@code setBounds(int, int, int, int)}.
940      */
941     @Deprecated
942     public void reshape(int x, int y, int width, int height) {
943         if (isMinimumSizeSet()) {
944             Dimension minSize = getMinimumSize();
945             if (width < minSize.width) {
946                 width = minSize.width;
947             }
948             if (height < minSize.height) {
949                 height = minSize.height;
950             }
951         }
952         super.reshape(x, y, width, height);
953     }
954 
955     void setClientSize(int w, int h) {
956         synchronized (getTreeLock()) {
957             setBoundsOp(ComponentPeer.SET_CLIENT_SIZE);
958             setBounds(x, y, w, h);
959         }
960     }
961 
962     static private final AtomicBoolean
963         beforeFirstWindowShown = new AtomicBoolean(true);
964 
965     final void closeSplashScreen() {
966         if (isTrayIconWindow) {
967             return;
968         }
969         if (beforeFirstWindowShown.getAndSet(false)) {
970             // We don't use SplashScreen.getSplashScreen() to avoid instantiating
971             // the object if it hasn't been requested by user code explicitly
972             SunToolkit.closeSplashScreen();
973             SplashScreen.markClosed();
974         }
975     }
976 
977     /**
978      * Shows or hides this {@code Window} depending on the value of parameter
979      * {@code b}.
980      * <p>
981      * If the method shows the window then the window is also made
982      * focused under the following conditions:
983      * <ul>
984      * <li> The {@code Window} meets the requirements outlined in the
985      *      {@link #isFocusableWindow} method.
986      * <li> The {@code Window}'s {@code autoRequestFocus} property is of the {@code true} value.
987      * <li> Native windowing system allows the {@code Window} to get focused.
988      * </ul>
989      * There is an exception for the second condition (the value of the
990      * {@code autoRequestFocus} property). The property is not taken into account if the
991      * window is a modal dialog, which blocks the currently focused window.
992      * <p>
993      * Developers must never assume that the window is the focused or active window
994      * until it receives a WINDOW_GAINED_FOCUS or WINDOW_ACTIVATED event.
995      * @param b  if {@code true}, makes the {@code Window} visible,
996      * otherwise hides the {@code Window}.
997      * If the {@code Window} and/or its owner
998      * are not yet displayable, both are made displayable.  The
999      * {@code Window} will be validated prior to being made visible.
1000      * If the {@code Window} is already visible, this will bring the
1001      * {@code Window} to the front.<p>
1002      * If {@code false}, hides this {@code Window}, its subcomponents, and all
1003      * of its owned children.
1004      * The {@code Window} and its subcomponents can be made visible again
1005      * with a call to {@code #setVisible(true)}.
1006      * @see java.awt.Component#isDisplayable
1007      * @see java.awt.Component#setVisible
1008      * @see java.awt.Window#toFront
1009      * @see java.awt.Window#dispose
1010      * @see java.awt.Window#setAutoRequestFocus
1011      * @see java.awt.Window#isFocusableWindow
1012      */
1013     public void setVisible(boolean b) {
1014         super.setVisible(b);
1015     }
1016 
1017     /**
1018      * Makes the Window visible. If the Window and/or its owner
1019      * are not yet displayable, both are made displayable.  The
1020      * Window will be validated prior to being made visible.
1021      * If the Window is already visible, this will bring the Window
1022      * to the front.
1023      * @see       Component#isDisplayable
1024      * @see       #toFront
1025      * @deprecated As of JDK version 1.5, replaced by
1026      * {@link #setVisible(boolean)}.
1027      */
1028     @Deprecated
1029     public void show() {
1030         if (peer == null) {
1031             addNotify();
1032         }
1033         validateUnconditionally();
1034 
1035         isInShow = true;
1036         if (visible) {
1037             toFront();
1038         } else {
1039             beforeFirstShow = false;
1040             closeSplashScreen();
1041             Dialog.checkShouldBeBlocked(this);
1042             super.show();
1043             synchronized (getTreeLock()) {
1044                 this.locationByPlatform = false;
1045             }
1046             for (int i = 0; i < ownedWindowList.size(); i++) {
1047                 Window child = ownedWindowList.elementAt(i).get();
1048                 if ((child != null) && child.showWithParent) {
1049                     child.show();
1050                     child.showWithParent = false;
1051                 }       // endif
1052             }   // endfor
1053             if (!isModalBlocked()) {
1054                 updateChildrenBlocking();
1055             } else {
1056                 // fix for 6532736: after this window is shown, its blocker
1057                 // should be raised to front
1058                 modalBlocker.toFront_NoClientCode();
1059             }
1060             if (this instanceof Frame || this instanceof Dialog) {
1061                 updateChildFocusableWindowState(this);
1062             }
1063         }
1064         isInShow = false;
1065 
1066         // If first time shown, generate WindowOpened event
1067         if ((state & OPENED) == 0) {
1068             postWindowEvent(WindowEvent.WINDOW_OPENED);
1069             state |= OPENED;
1070         }
1071     }
1072 
1073     static void updateChildFocusableWindowState(Window w) {
1074         if (w.getPeer() != null && w.isShowing()) {
1075             ((WindowPeer)w.getPeer()).updateFocusableWindowState();
1076         }
1077         for (int i = 0; i < w.ownedWindowList.size(); i++) {
1078             Window child = w.ownedWindowList.elementAt(i).get();
1079             if (child != null) {
1080                 updateChildFocusableWindowState(child);
1081             }
1082         }
1083     }
1084 
1085     synchronized void postWindowEvent(int id) {
1086         if (windowListener != null
1087             || (eventMask & AWTEvent.WINDOW_EVENT_MASK) != 0
1088             ||  Toolkit.enabledOnToolkit(AWTEvent.WINDOW_EVENT_MASK)) {
1089             WindowEvent e = new WindowEvent(this, id);
1090             Toolkit.getEventQueue().postEvent(e);
1091         }
1092     }
1093 
1094     /**
1095      * Hide this Window, its subcomponents, and all of its owned children.
1096      * The Window and its subcomponents can be made visible again
1097      * with a call to {@code show}.
1098      * @see #show
1099      * @see #dispose
1100      * @deprecated As of JDK version 1.5, replaced by
1101      * {@link #setVisible(boolean)}.
1102      */
1103     @Deprecated
1104     public void hide() {
1105         synchronized(ownedWindowList) {
1106             for (int i = 0; i < ownedWindowList.size(); i++) {
1107                 Window child = ownedWindowList.elementAt(i).get();
1108                 if ((child != null) && child.visible) {
1109                     child.hide();
1110                     child.showWithParent = true;
1111                 }
1112             }
1113         }
1114         if (isModalBlocked()) {
1115             modalBlocker.unblockWindow(this);
1116         }
1117         super.hide();
1118         synchronized (getTreeLock()) {
1119             this.locationByPlatform = false;
1120         }
1121     }
1122 
1123     final void clearMostRecentFocusOwnerOnHide() {
1124         /* do nothing */
1125     }
1126 
1127     /**
1128      * Releases all of the native screen resources used by this
1129      * {@code Window}, its subcomponents, and all of its owned
1130      * children. That is, the resources for these {@code Component}s
1131      * will be destroyed, any memory they consume will be returned to the
1132      * OS, and they will be marked as undisplayable.
1133      * <p>
1134      * The {@code Window} and its subcomponents can be made displayable
1135      * again by rebuilding the native resources with a subsequent call to
1136      * {@code pack} or {@code show}. The states of the recreated
1137      * {@code Window} and its subcomponents will be identical to the
1138      * states of these objects at the point where the {@code Window}
1139      * was disposed (not accounting for additional modifications between
1140      * those actions).
1141      * <p>
1142      * <b>Note</b>: When the last displayable window
1143      * within the Java virtual machine (VM) is disposed of, the VM may
1144      * terminate.  See <a href="doc-files/AWTThreadIssues.html#Autoshutdown">
1145      * AWT Threading Issues</a> for more information.
1146      * @see Component#isDisplayable
1147      * @see #pack
1148      * @see #show
1149      */
1150     public void dispose() {
1151         doDispose();
1152     }
1153 
1154     /*
1155      * Fix for 4872170.
1156      * If dispose() is called on parent then its children have to be disposed as well
1157      * as reported in javadoc. So we need to implement this functionality even if a
1158      * child overrides dispose() in a wrong way without calling super.dispose().
1159      */
1160     void disposeImpl() {
1161         dispose();
1162         if (getPeer() != null) {
1163             doDispose();
1164         }
1165     }
1166 
1167     void doDispose() {
1168     class DisposeAction implements Runnable {
1169         public void run() {
1170             disposing = true;
1171             try {
1172                 // Check if this window is the fullscreen window for the
1173                 // device. Exit the fullscreen mode prior to disposing
1174                 // of the window if that's the case.
1175                 GraphicsDevice gd = getGraphicsConfiguration().getDevice();
1176                 if (gd.getFullScreenWindow() == Window.this) {
1177                     gd.setFullScreenWindow(null);
1178                 }
1179 
1180                 Object[] ownedWindowArray;
1181                 synchronized(ownedWindowList) {
1182                     ownedWindowArray = new Object[ownedWindowList.size()];
1183                     ownedWindowList.copyInto(ownedWindowArray);
1184                 }
1185                 for (int i = 0; i < ownedWindowArray.length; i++) {
1186                     Window child = (Window) (((WeakReference)
1187                                    (ownedWindowArray[i])).get());
1188                     if (child != null) {
1189                         child.disposeImpl();
1190                     }
1191                 }
1192                 hide();
1193                 beforeFirstShow = true;
1194                 removeNotify();
1195                 synchronized (inputContextLock) {
1196                     if (inputContext != null) {
1197                         inputContext.dispose();
1198                         inputContext = null;
1199                     }
1200                 }
1201                 clearCurrentFocusCycleRootOnHide();
1202             } finally {
1203                 disposing = false;
1204             }
1205         }
1206     }
1207         boolean fireWindowClosedEvent = isDisplayable();
1208         DisposeAction action = new DisposeAction();
1209         if (EventQueue.isDispatchThread()) {
1210             action.run();
1211         }
1212         else {
1213             try {
1214                 EventQueue.invokeAndWait(this, action);
1215             }
1216             catch (InterruptedException e) {
1217                 System.err.println("Disposal was interrupted:");
1218                 e.printStackTrace();
1219             }
1220             catch (InvocationTargetException e) {
1221                 System.err.println("Exception during disposal:");
1222                 e.printStackTrace();
1223             }
1224         }
1225         // Execute outside the Runnable because postWindowEvent is
1226         // synchronized on (this). We don't need to synchronize the call
1227         // on the EventQueue anyways.
1228         if (fireWindowClosedEvent) {
1229             postWindowEvent(WindowEvent.WINDOW_CLOSED);
1230         }
1231     }
1232 
1233     /*
1234      * Should only be called while holding the tree lock.
1235      * It's overridden here because parent == owner in Window,
1236      * and we shouldn't adjust counter on owner
1237      */
1238     void adjustListeningChildrenOnParent(long mask, int num) {
1239     }
1240 
1241     // Should only be called while holding tree lock
1242     void adjustDecendantsOnParent(int num) {
1243         // do nothing since parent == owner and we shouldn't
1244         // ajust counter on owner
1245     }
1246 
1247     /**
1248      * If this Window is visible, brings this Window to the front and may make
1249      * it the focused Window.
1250      * <p>
1251      * Places this Window at the top of the stacking order and shows it in
1252      * front of any other Windows in this VM. No action will take place if this
1253      * Window is not visible. Some platforms do not allow Windows which own
1254      * other Windows to appear on top of those owned Windows. Some platforms
1255      * may not permit this VM to place its Windows above windows of native
1256      * applications, or Windows of other VMs. This permission may depend on
1257      * whether a Window in this VM is already focused. Every attempt will be
1258      * made to move this Window as high as possible in the stacking order;
1259      * however, developers should not assume that this method will move this
1260      * Window above all other windows in every situation.
1261      * <p>
1262      * Developers must never assume that this Window is the focused or active
1263      * Window until this Window receives a WINDOW_GAINED_FOCUS or WINDOW_ACTIVATED
1264      * event. On platforms where the top-most window is the focused window, this
1265      * method will <b>probably</b> focus this Window (if it is not already focused)
1266      * under the following conditions:
1267      * <ul>
1268      * <li> The window meets the requirements outlined in the
1269      *      {@link #isFocusableWindow} method.
1270      * <li> The window's property {@code autoRequestFocus} is of the
1271      *      {@code true} value.
1272      * <li> Native windowing system allows the window to get focused.
1273      * </ul>
1274      * On platforms where the stacking order does not typically affect the focused
1275      * window, this method will <b>probably</b> leave the focused and active
1276      * Windows unchanged.
1277      * <p>
1278      * If this method causes this Window to be focused, and this Window is a
1279      * Frame or a Dialog, it will also become activated. If this Window is
1280      * focused, but it is not a Frame or a Dialog, then the first Frame or
1281      * Dialog that is an owner of this Window will be activated.
1282      * <p>
1283      * If this window is blocked by modal dialog, then the blocking dialog
1284      * is brought to the front and remains above the blocked window.
1285      *
1286      * @see       #toBack
1287      * @see       #setAutoRequestFocus
1288      * @see       #isFocusableWindow
1289      */
1290     public void toFront() {
1291         toFront_NoClientCode();
1292     }
1293 
1294     // This functionality is implemented in a final package-private method
1295     // to insure that it cannot be overridden by client subclasses.
1296     final void toFront_NoClientCode() {
1297         if (visible) {
1298             WindowPeer peer = (WindowPeer)this.peer;
1299             if (peer != null) {
1300                 peer.toFront();
1301             }
1302             if (isModalBlocked()) {
1303                 modalBlocker.toFront_NoClientCode();
1304             }
1305         }
1306     }
1307 
1308     /**
1309      * If this Window is visible, sends this Window to the back and may cause
1310      * it to lose focus or activation if it is the focused or active Window.
1311      * <p>
1312      * Places this Window at the bottom of the stacking order and shows it
1313      * behind any other Windows in this VM. No action will take place is this
1314      * Window is not visible. Some platforms do not allow Windows which are
1315      * owned by other Windows to appear below their owners. Every attempt will
1316      * be made to move this Window as low as possible in the stacking order;
1317      * however, developers should not assume that this method will move this
1318      * Window below all other windows in every situation.
1319      * <p>
1320      * Because of variations in native windowing systems, no guarantees about
1321      * changes to the focused and active Windows can be made. Developers must
1322      * never assume that this Window is no longer the focused or active Window
1323      * until this Window receives a WINDOW_LOST_FOCUS or WINDOW_DEACTIVATED
1324      * event. On platforms where the top-most window is the focused window,
1325      * this method will <b>probably</b> cause this Window to lose focus. In
1326      * that case, the next highest, focusable Window in this VM will receive
1327      * focus. On platforms where the stacking order does not typically affect
1328      * the focused window, this method will <b>probably</b> leave the focused
1329      * and active Windows unchanged.
1330      *
1331      * @see       #toFront
1332      */
1333     public void toBack() {
1334         toBack_NoClientCode();
1335     }
1336 
1337     // This functionality is implemented in a final package-private method
1338     // to insure that it cannot be overridden by client subclasses.
1339     final void toBack_NoClientCode() {
1340         if(isAlwaysOnTop()) {
1341             try {
1342                 setAlwaysOnTop(false);
1343             }catch(SecurityException e) {
1344             }
1345         }
1346         if (visible) {
1347             WindowPeer peer = (WindowPeer)this.peer;
1348             if (peer != null) {
1349                 peer.toBack();
1350             }
1351         }
1352     }
1353 
1354     /**
1355      * Returns the toolkit of this frame.
1356      * @return    the toolkit of this window.
1357      * @see       Toolkit
1358      * @see       Toolkit#getDefaultToolkit
1359      * @see       Component#getToolkit
1360      */
1361     public Toolkit getToolkit() {
1362         return Toolkit.getDefaultToolkit();
1363     }
1364 
1365     /**
1366      * Gets the warning string that is displayed with this window.
1367      * If this window is insecure, the warning string is displayed
1368      * somewhere in the visible area of the window. A window is
1369      * insecure if there is a security manager and the security
1370      * manager denies
1371      * {@code AWTPermission("showWindowWithoutWarningBanner")}.
1372      * <p>
1373      * If the window is secure, then {@code getWarningString}
1374      * returns {@code null}. If the window is insecure, this
1375      * method checks for the system property
1376      * {@code awt.appletWarning}
1377      * and returns the string value of that property.
1378      * @return    the warning string for this window.
1379      */
1380     public final String getWarningString() {
1381         return warningString;
1382     }
1383 
1384     private void setWarningString() {
1385         warningString = null;
1386         SecurityManager sm = System.getSecurityManager();
1387         if (sm != null) {
1388             try {
1389                 sm.checkPermission(SecurityConstants.AWT.TOPLEVEL_WINDOW_PERMISSION);
1390             } catch (SecurityException se) {
1391                 // make sure the privileged action is only
1392                 // for getting the property! We don't want the
1393                 // above checkPermission call to always succeed!
1394                 warningString = AccessController.doPrivileged(
1395                       new GetPropertyAction("awt.appletWarning",
1396                                             "Java Applet Window"));
1397             }
1398         }
1399     }
1400 
1401     /**
1402      * Gets the {@code Locale} object that is associated
1403      * with this window, if the locale has been set.
1404      * If no locale has been set, then the default locale
1405      * is returned.
1406      * @return    the locale that is set for this window.
1407      * @see       java.util.Locale
1408      * @since     JDK1.1
1409      */
1410     public Locale getLocale() {
1411       if (this.locale == null) {
1412         return Locale.getDefault();
1413       }
1414       return this.locale;
1415     }
1416 
1417     /**
1418      * Gets the input context for this window. A window always has an input context,
1419      * which is shared by subcomponents unless they create and set their own.
1420      * @see Component#getInputContext
1421      * @since 1.2
1422      */
1423     public InputContext getInputContext() {
1424         synchronized (inputContextLock) {
1425             if (inputContext == null) {
1426                 inputContext = InputContext.getInstance();
1427             }
1428         }
1429         return inputContext;
1430     }
1431 
1432     /**
1433      * Set the cursor image to a specified cursor.
1434      * <p>
1435      * The method may have no visual effect if the Java platform
1436      * implementation and/or the native system do not support
1437      * changing the mouse cursor shape.
1438      * @param     cursor One of the constants defined
1439      *            by the {@code Cursor} class. If this parameter is null
1440      *            then the cursor for this window will be set to the type
1441      *            Cursor.DEFAULT_CURSOR.
1442      * @see       Component#getCursor
1443      * @see       Cursor
1444      * @since     JDK1.1
1445      */
1446     public void setCursor(Cursor cursor) {
1447         if (cursor == null) {
1448             cursor = Cursor.getPredefinedCursor(Cursor.DEFAULT_CURSOR);
1449         }
1450         super.setCursor(cursor);
1451     }
1452 
1453     /**
1454      * Returns the owner of this window.
1455      * @since 1.2
1456      */
1457     public Window getOwner() {
1458         return getOwner_NoClientCode();
1459     }
1460     final Window getOwner_NoClientCode() {
1461         return (Window)parent;
1462     }
1463 
1464     /**
1465      * Return an array containing all the windows this
1466      * window currently owns.
1467      * @since 1.2
1468      */
1469     public Window[] getOwnedWindows() {
1470         return getOwnedWindows_NoClientCode();
1471     }
1472     final Window[] getOwnedWindows_NoClientCode() {
1473         Window realCopy[];
1474 
1475         synchronized(ownedWindowList) {
1476             // Recall that ownedWindowList is actually a Vector of
1477             // WeakReferences and calling get() on one of these references
1478             // may return null. Make two arrays-- one the size of the
1479             // Vector (fullCopy with size fullSize), and one the size of
1480             // all non-null get()s (realCopy with size realSize).
1481             int fullSize = ownedWindowList.size();
1482             int realSize = 0;
1483             Window fullCopy[] = new Window[fullSize];
1484 
1485             for (int i = 0; i < fullSize; i++) {
1486                 fullCopy[realSize] = ownedWindowList.elementAt(i).get();
1487 
1488                 if (fullCopy[realSize] != null) {
1489                     realSize++;
1490                 }
1491             }
1492 
1493             if (fullSize != realSize) {
1494                 realCopy = Arrays.copyOf(fullCopy, realSize);
1495             } else {
1496                 realCopy = fullCopy;
1497             }
1498         }
1499 
1500         return realCopy;
1501     }
1502 
1503     boolean isModalBlocked() {
1504         return modalBlocker != null;
1505     }
1506 
1507     void setModalBlocked(Dialog blocker, boolean blocked, boolean peerCall) {
1508         this.modalBlocker = blocked ? blocker : null;
1509         if (peerCall) {
1510             WindowPeer peer = (WindowPeer)this.peer;
1511             if (peer != null) {
1512                 peer.setModalBlocked(blocker, blocked);
1513             }
1514         }
1515     }
1516 
1517     Dialog getModalBlocker() {
1518         return modalBlocker;
1519     }
1520 
1521     /*
1522      * Returns a list of all displayable Windows, i. e. all the
1523      * Windows which peer is not null.
1524      *
1525      * @see #addNotify
1526      * @see #removeNotify
1527      */
1528     static IdentityArrayList<Window> getAllWindows() {
1529         synchronized (allWindows) {
1530             IdentityArrayList<Window> v = new IdentityArrayList<Window>();
1531             v.addAll(allWindows);
1532             return v;
1533         }
1534     }
1535 
1536     static IdentityArrayList<Window> getAllUnblockedWindows() {
1537         synchronized (allWindows) {
1538             IdentityArrayList<Window> unblocked = new IdentityArrayList<Window>();
1539             for (int i = 0; i < allWindows.size(); i++) {
1540                 Window w = allWindows.get(i);
1541                 if (!w.isModalBlocked()) {
1542                     unblocked.add(w);
1543                 }
1544             }
1545             return unblocked;
1546         }
1547     }
1548 
1549     private static Window[] getWindows(AppContext appContext) {
1550         synchronized (Window.class) {
1551             Window realCopy[];
1552             @SuppressWarnings("unchecked")
1553             Vector<WeakReference<Window>> windowList =
1554                 (Vector<WeakReference<Window>>)appContext.get(Window.class);
1555             if (windowList != null) {
1556                 int fullSize = windowList.size();
1557                 int realSize = 0;
1558                 Window fullCopy[] = new Window[fullSize];
1559                 for (int i = 0; i < fullSize; i++) {
1560                     Window w = windowList.get(i).get();
1561                     if (w != null) {
1562                         fullCopy[realSize++] = w;
1563                     }
1564                 }
1565                 if (fullSize != realSize) {
1566                     realCopy = Arrays.copyOf(fullCopy, realSize);
1567                 } else {
1568                     realCopy = fullCopy;
1569                 }
1570             } else {
1571                 realCopy = new Window[0];
1572             }
1573             return realCopy;
1574         }
1575     }
1576 
1577     /**
1578      * Returns an array of all {@code Window}s, both owned and ownerless,
1579      * created by this application.
1580      * If called from an applet, the array includes only the {@code Window}s
1581      * accessible by that applet.
1582      * <p>
1583      * <b>Warning:</b> this method may return system created windows, such
1584      * as a print dialog. Applications should not assume the existence of
1585      * these dialogs, nor should an application assume anything about these
1586      * dialogs such as component positions, {@code LayoutManager}s
1587      * or serialization.
1588      *
1589      * @see Frame#getFrames
1590      * @see Window#getOwnerlessWindows
1591      *
1592      * @since 1.6
1593      */
1594     public static Window[] getWindows() {
1595         return getWindows(AppContext.getAppContext());
1596     }
1597 
1598     /**
1599      * Returns an array of all {@code Window}s created by this application
1600      * that have no owner. They include {@code Frame}s and ownerless
1601      * {@code Dialog}s and {@code Window}s.
1602      * If called from an applet, the array includes only the {@code Window}s
1603      * accessible by that applet.
1604      * <p>
1605      * <b>Warning:</b> this method may return system created windows, such
1606      * as a print dialog. Applications should not assume the existence of
1607      * these dialogs, nor should an application assume anything about these
1608      * dialogs such as component positions, {@code LayoutManager}s
1609      * or serialization.
1610      *
1611      * @see Frame#getFrames
1612      * @see Window#getWindows()
1613      *
1614      * @since 1.6
1615      */
1616     public static Window[] getOwnerlessWindows() {
1617         Window[] allWindows = Window.getWindows();
1618 
1619         int ownerlessCount = 0;
1620         for (Window w : allWindows) {
1621             if (w.getOwner() == null) {
1622                 ownerlessCount++;
1623             }
1624         }
1625 
1626         Window[] ownerless = new Window[ownerlessCount];
1627         int c = 0;
1628         for (Window w : allWindows) {
1629             if (w.getOwner() == null) {
1630                 ownerless[c++] = w;
1631             }
1632         }
1633 
1634         return ownerless;
1635     }
1636 
1637     Window getDocumentRoot() {
1638         synchronized (getTreeLock()) {
1639             Window w = this;
1640             while (w.getOwner() != null) {
1641                 w = w.getOwner();
1642             }
1643             return w;
1644         }
1645     }
1646 
1647     /**
1648      * Specifies the modal exclusion type for this window. If a window is modal
1649      * excluded, it is not blocked by some modal dialogs. See {@link
1650      * java.awt.Dialog.ModalExclusionType Dialog.ModalExclusionType} for
1651      * possible modal exclusion types.
1652      * <p>
1653      * If the given type is not supported, {@code NO_EXCLUDE} is used.
1654      * <p>
1655      * Note: changing the modal exclusion type for a visible window may have no
1656      * effect until it is hidden and then shown again.
1657      *
1658      * @param exclusionType the modal exclusion type for this window; a {@code null}
1659      *     value is equivalent to {@link Dialog.ModalExclusionType#NO_EXCLUDE
1660      *     NO_EXCLUDE}
1661      * @throws SecurityException if the calling thread does not have permission
1662      *     to set the modal exclusion property to the window with the given
1663      *     {@code exclusionType}
1664      * @see java.awt.Dialog.ModalExclusionType
1665      * @see java.awt.Window#getModalExclusionType
1666      * @see java.awt.Toolkit#isModalExclusionTypeSupported
1667      *
1668      * @since 1.6
1669      */
1670     public void setModalExclusionType(Dialog.ModalExclusionType exclusionType) {
1671         if (exclusionType == null) {
1672             exclusionType = Dialog.ModalExclusionType.NO_EXCLUDE;
1673         }
1674         if (!Toolkit.getDefaultToolkit().isModalExclusionTypeSupported(exclusionType)) {
1675             exclusionType = Dialog.ModalExclusionType.NO_EXCLUDE;
1676         }
1677         if (modalExclusionType == exclusionType) {
1678             return;
1679         }
1680         if (exclusionType == Dialog.ModalExclusionType.TOOLKIT_EXCLUDE) {
1681             SecurityManager sm = System.getSecurityManager();
1682             if (sm != null) {
1683                 sm.checkPermission(SecurityConstants.AWT.TOOLKIT_MODALITY_PERMISSION);
1684             }
1685         }
1686         modalExclusionType = exclusionType;
1687 
1688         // if we want on-fly changes, we need to uncomment the lines below
1689         //   and override the method in Dialog to use modalShow() instead
1690         //   of updateChildrenBlocking()
1691  /*
1692         if (isModalBlocked()) {
1693             modalBlocker.unblockWindow(this);
1694         }
1695         Dialog.checkShouldBeBlocked(this);
1696         updateChildrenBlocking();
1697  */
1698     }
1699 
1700     /**
1701      * Returns the modal exclusion type of this window.
1702      *
1703      * @return the modal exclusion type of this window
1704      *
1705      * @see java.awt.Dialog.ModalExclusionType
1706      * @see java.awt.Window#setModalExclusionType
1707      *
1708      * @since 1.6
1709      */
1710     public Dialog.ModalExclusionType getModalExclusionType() {
1711         return modalExclusionType;
1712     }
1713 
1714     boolean isModalExcluded(Dialog.ModalExclusionType exclusionType) {
1715         if ((modalExclusionType != null) &&
1716             modalExclusionType.compareTo(exclusionType) >= 0)
1717         {
1718             return true;
1719         }
1720         Window owner = getOwner_NoClientCode();
1721         return (owner != null) && owner.isModalExcluded(exclusionType);
1722     }
1723 
1724     void updateChildrenBlocking() {
1725         Vector<Window> childHierarchy = new Vector<Window>();
1726         Window[] ownedWindows = getOwnedWindows();
1727         for (int i = 0; i < ownedWindows.length; i++) {
1728             childHierarchy.add(ownedWindows[i]);
1729         }
1730         int k = 0;
1731         while (k < childHierarchy.size()) {
1732             Window w = childHierarchy.get(k);
1733             if (w.isVisible()) {
1734                 if (w.isModalBlocked()) {
1735                     Dialog blocker = w.getModalBlocker();
1736                     blocker.unblockWindow(w);
1737                 }
1738                 Dialog.checkShouldBeBlocked(w);
1739                 Window[] wOwned = w.getOwnedWindows();
1740                 for (int j = 0; j < wOwned.length; j++) {
1741                     childHierarchy.add(wOwned[j]);
1742                 }
1743             }
1744             k++;
1745         }
1746     }
1747 
1748     /**
1749      * Adds the specified window listener to receive window events from
1750      * this window.
1751      * If l is null, no exception is thrown and no action is performed.
1752      * <p>Refer to <a href="doc-files/AWTThreadIssues.html#ListenersThreads"
1753      * >AWT Threading Issues</a> for details on AWT's threading model.
1754      *
1755      * @param   l the window listener
1756      * @see #removeWindowListener
1757      * @see #getWindowListeners
1758      */
1759     public synchronized void addWindowListener(WindowListener l) {
1760         if (l == null) {
1761             return;
1762         }
1763         newEventsOnly = true;
1764         windowListener = AWTEventMulticaster.add(windowListener, l);
1765     }
1766 
1767     /**
1768      * Adds the specified window state listener to receive window
1769      * events from this window.  If {@code l} is {@code null},
1770      * no exception is thrown and no action is performed.
1771      * <p>Refer to <a href="doc-files/AWTThreadIssues.html#ListenersThreads"
1772      * >AWT Threading Issues</a> for details on AWT's threading model.
1773      *
1774      * @param   l the window state listener
1775      * @see #removeWindowStateListener
1776      * @see #getWindowStateListeners
1777      * @since 1.4
1778      */
1779     public synchronized void addWindowStateListener(WindowStateListener l) {
1780         if (l == null) {
1781             return;
1782         }
1783         windowStateListener = AWTEventMulticaster.add(windowStateListener, l);
1784         newEventsOnly = true;
1785     }
1786 
1787     /**
1788      * Adds the specified window focus listener to receive window events
1789      * from this window.
1790      * If l is null, no exception is thrown and no action is performed.
1791      * <p>Refer to <a href="doc-files/AWTThreadIssues.html#ListenersThreads"
1792      * >AWT Threading Issues</a> for details on AWT's threading model.
1793      *
1794      * @param   l the window focus listener
1795      * @see #removeWindowFocusListener
1796      * @see #getWindowFocusListeners
1797      * @since 1.4
1798      */
1799     public synchronized void addWindowFocusListener(WindowFocusListener l) {
1800         if (l == null) {
1801             return;
1802         }
1803         windowFocusListener = AWTEventMulticaster.add(windowFocusListener, l);
1804         newEventsOnly = true;
1805     }
1806 
1807     /**
1808      * Removes the specified window listener so that it no longer
1809      * receives window events from this window.
1810      * If l is null, no exception is thrown and no action is performed.
1811      * <p>Refer to <a href="doc-files/AWTThreadIssues.html#ListenersThreads"
1812      * >AWT Threading Issues</a> for details on AWT's threading model.
1813      *
1814      * @param   l the window listener
1815      * @see #addWindowListener
1816      * @see #getWindowListeners
1817      */
1818     public synchronized void removeWindowListener(WindowListener l) {
1819         if (l == null) {
1820             return;
1821         }
1822         windowListener = AWTEventMulticaster.remove(windowListener, l);
1823     }
1824 
1825     /**
1826      * Removes the specified window state listener so that it no
1827      * longer receives window events from this window.  If
1828      * {@code l} is {@code null}, no exception is thrown and
1829      * no action is performed.
1830      * <p>Refer to <a href="doc-files/AWTThreadIssues.html#ListenersThreads"
1831      * >AWT Threading Issues</a> for details on AWT's threading model.
1832      *
1833      * @param   l the window state listener
1834      * @see #addWindowStateListener
1835      * @see #getWindowStateListeners
1836      * @since 1.4
1837      */
1838     public synchronized void removeWindowStateListener(WindowStateListener l) {
1839         if (l == null) {
1840             return;
1841         }
1842         windowStateListener = AWTEventMulticaster.remove(windowStateListener, l);
1843     }
1844 
1845     /**
1846      * Removes the specified window focus listener so that it no longer
1847      * receives window events from this window.
1848      * If l is null, no exception is thrown and no action is performed.
1849      * <p>Refer to <a href="doc-files/AWTThreadIssues.html#ListenersThreads"
1850      * >AWT Threading Issues</a> for details on AWT's threading model.
1851      *
1852      * @param   l the window focus listener
1853      * @see #addWindowFocusListener
1854      * @see #getWindowFocusListeners
1855      * @since 1.4
1856      */
1857     public synchronized void removeWindowFocusListener(WindowFocusListener l) {
1858         if (l == null) {
1859             return;
1860         }
1861         windowFocusListener = AWTEventMulticaster.remove(windowFocusListener, l);
1862     }
1863 
1864     /**
1865      * Returns an array of all the window listeners
1866      * registered on this window.
1867      *
1868      * @return all of this window's {@code WindowListener}s
1869      *         or an empty array if no window
1870      *         listeners are currently registered
1871      *
1872      * @see #addWindowListener
1873      * @see #removeWindowListener
1874      * @since 1.4
1875      */
1876     public synchronized WindowListener[] getWindowListeners() {
1877         return getListeners(WindowListener.class);
1878     }
1879 
1880     /**
1881      * Returns an array of all the window focus listeners
1882      * registered on this window.
1883      *
1884      * @return all of this window's {@code WindowFocusListener}s
1885      *         or an empty array if no window focus
1886      *         listeners are currently registered
1887      *
1888      * @see #addWindowFocusListener
1889      * @see #removeWindowFocusListener
1890      * @since 1.4
1891      */
1892     public synchronized WindowFocusListener[] getWindowFocusListeners() {
1893         return getListeners(WindowFocusListener.class);
1894     }
1895 
1896     /**
1897      * Returns an array of all the window state listeners
1898      * registered on this window.
1899      *
1900      * @return all of this window's {@code WindowStateListener}s
1901      *         or an empty array if no window state
1902      *         listeners are currently registered
1903      *
1904      * @see #addWindowStateListener
1905      * @see #removeWindowStateListener
1906      * @since 1.4
1907      */
1908     public synchronized WindowStateListener[] getWindowStateListeners() {
1909         return getListeners(WindowStateListener.class);
1910     }
1911 
1912 
1913     /**
1914      * Returns an array of all the objects currently registered
1915      * as <code><em>Foo</em>Listener</code>s
1916      * upon this {@code Window}.
1917      * <code><em>Foo</em>Listener</code>s are registered using the
1918      * <code>add<em>Foo</em>Listener</code> method.
1919      *
1920      * <p>
1921      *
1922      * You can specify the {@code listenerType} argument
1923      * with a class literal, such as
1924      * <code><em>Foo</em>Listener.class</code>.
1925      * For example, you can query a
1926      * {@code Window} {@code w}
1927      * for its window listeners with the following code:
1928      *
1929      * <pre>WindowListener[] wls = (WindowListener[])(w.getListeners(WindowListener.class));</pre>
1930      *
1931      * If no such listeners exist, this method returns an empty array.
1932      *
1933      * @param listenerType the type of listeners requested; this parameter
1934      *          should specify an interface that descends from
1935      *          {@code java.util.EventListener}
1936      * @return an array of all objects registered as
1937      *          <code><em>Foo</em>Listener</code>s on this window,
1938      *          or an empty array if no such
1939      *          listeners have been added
1940      * @exception ClassCastException if {@code listenerType}
1941      *          doesn't specify a class or interface that implements
1942      *          {@code java.util.EventListener}
1943      * @exception NullPointerException if {@code listenerType} is {@code null}
1944      *
1945      * @see #getWindowListeners
1946      * @since 1.3
1947      */
1948     public <T extends EventListener> T[] getListeners(Class<T> listenerType) {
1949         EventListener l = null;
1950         if (listenerType == WindowFocusListener.class) {
1951             l = windowFocusListener;
1952         } else if (listenerType == WindowStateListener.class) {
1953             l = windowStateListener;
1954         } else if (listenerType == WindowListener.class) {
1955             l = windowListener;
1956         } else {
1957             return super.getListeners(listenerType);
1958         }
1959         return AWTEventMulticaster.getListeners(l, listenerType);
1960     }
1961 
1962     // REMIND: remove when filtering is handled at lower level
1963     boolean eventEnabled(AWTEvent e) {
1964         switch(e.id) {
1965           case WindowEvent.WINDOW_OPENED:
1966           case WindowEvent.WINDOW_CLOSING:
1967           case WindowEvent.WINDOW_CLOSED:
1968           case WindowEvent.WINDOW_ICONIFIED:
1969           case WindowEvent.WINDOW_DEICONIFIED:
1970           case WindowEvent.WINDOW_ACTIVATED:
1971           case WindowEvent.WINDOW_DEACTIVATED:
1972             if ((eventMask & AWTEvent.WINDOW_EVENT_MASK) != 0 ||
1973                 windowListener != null) {
1974                 return true;
1975             }
1976             return false;
1977           case WindowEvent.WINDOW_GAINED_FOCUS:
1978           case WindowEvent.WINDOW_LOST_FOCUS:
1979             if ((eventMask & AWTEvent.WINDOW_FOCUS_EVENT_MASK) != 0 ||
1980                 windowFocusListener != null) {
1981                 return true;
1982             }
1983             return false;
1984           case WindowEvent.WINDOW_STATE_CHANGED:
1985             if ((eventMask & AWTEvent.WINDOW_STATE_EVENT_MASK) != 0 ||
1986                 windowStateListener != null) {
1987                 return true;
1988             }
1989             return false;
1990           default:
1991             break;
1992         }
1993         return super.eventEnabled(e);
1994     }
1995 
1996     /**
1997      * Processes events on this window. If the event is an
1998      * {@code WindowEvent}, it invokes the
1999      * {@code processWindowEvent} method, else it invokes its
2000      * superclass's {@code processEvent}.
2001      * <p>Note that if the event parameter is {@code null}
2002      * the behavior is unspecified and may result in an
2003      * exception.
2004      *
2005      * @param e the event
2006      */
2007     protected void processEvent(AWTEvent e) {
2008         if (e instanceof WindowEvent) {
2009             switch (e.getID()) {
2010                 case WindowEvent.WINDOW_OPENED:
2011                 case WindowEvent.WINDOW_CLOSING:
2012                 case WindowEvent.WINDOW_CLOSED:
2013                 case WindowEvent.WINDOW_ICONIFIED:
2014                 case WindowEvent.WINDOW_DEICONIFIED:
2015                 case WindowEvent.WINDOW_ACTIVATED:
2016                 case WindowEvent.WINDOW_DEACTIVATED:
2017                     processWindowEvent((WindowEvent)e);
2018                     break;
2019                 case WindowEvent.WINDOW_GAINED_FOCUS:
2020                 case WindowEvent.WINDOW_LOST_FOCUS:
2021                     processWindowFocusEvent((WindowEvent)e);
2022                     break;
2023                 case WindowEvent.WINDOW_STATE_CHANGED:
2024                     processWindowStateEvent((WindowEvent)e);
2025                     break;
2026             }
2027             return;
2028         }
2029         super.processEvent(e);
2030     }
2031 
2032     /**
2033      * Processes window events occurring on this window by
2034      * dispatching them to any registered WindowListener objects.
2035      * NOTE: This method will not be called unless window events
2036      * are enabled for this component; this happens when one of the
2037      * following occurs:
2038      * <ul>
2039      * <li>A WindowListener object is registered via
2040      *     {@code addWindowListener}
2041      * <li>Window events are enabled via {@code enableEvents}
2042      * </ul>
2043      * <p>Note that if the event parameter is {@code null}
2044      * the behavior is unspecified and may result in an
2045      * exception.
2046      *
2047      * @param e the window event
2048      * @see Component#enableEvents
2049      */
2050     protected void processWindowEvent(WindowEvent e) {
2051         WindowListener listener = windowListener;
2052         if (listener != null) {
2053             switch(e.getID()) {
2054                 case WindowEvent.WINDOW_OPENED:
2055                     listener.windowOpened(e);
2056                     break;
2057                 case WindowEvent.WINDOW_CLOSING:
2058                     listener.windowClosing(e);
2059                     break;
2060                 case WindowEvent.WINDOW_CLOSED:
2061                     listener.windowClosed(e);
2062                     break;
2063                 case WindowEvent.WINDOW_ICONIFIED:
2064                     listener.windowIconified(e);
2065                     break;
2066                 case WindowEvent.WINDOW_DEICONIFIED:
2067                     listener.windowDeiconified(e);
2068                     break;
2069                 case WindowEvent.WINDOW_ACTIVATED:
2070                     listener.windowActivated(e);
2071                     break;
2072                 case WindowEvent.WINDOW_DEACTIVATED:
2073                     listener.windowDeactivated(e);
2074                     break;
2075                 default:
2076                     break;
2077             }
2078         }
2079     }
2080 
2081     /**
2082      * Processes window focus event occurring on this window by
2083      * dispatching them to any registered WindowFocusListener objects.
2084      * NOTE: this method will not be called unless window focus events
2085      * are enabled for this window. This happens when one of the
2086      * following occurs:
2087      * <ul>
2088      * <li>a WindowFocusListener is registered via
2089      *     {@code addWindowFocusListener}
2090      * <li>Window focus events are enabled via {@code enableEvents}
2091      * </ul>
2092      * <p>Note that if the event parameter is {@code null}
2093      * the behavior is unspecified and may result in an
2094      * exception.
2095      *
2096      * @param e the window focus event
2097      * @see Component#enableEvents
2098      * @since 1.4
2099      */
2100     protected void processWindowFocusEvent(WindowEvent e) {
2101         WindowFocusListener listener = windowFocusListener;
2102         if (listener != null) {
2103             switch (e.getID()) {
2104                 case WindowEvent.WINDOW_GAINED_FOCUS:
2105                     listener.windowGainedFocus(e);
2106                     break;
2107                 case WindowEvent.WINDOW_LOST_FOCUS:
2108                     listener.windowLostFocus(e);
2109                     break;
2110                 default:
2111                     break;
2112             }
2113         }
2114     }
2115 
2116     /**
2117      * Processes window state event occurring on this window by
2118      * dispatching them to any registered {@code WindowStateListener}
2119      * objects.
2120      * NOTE: this method will not be called unless window state events
2121      * are enabled for this window.  This happens when one of the
2122      * following occurs:
2123      * <ul>
2124      * <li>a {@code WindowStateListener} is registered via
2125      *    {@code addWindowStateListener}
2126      * <li>window state events are enabled via {@code enableEvents}
2127      * </ul>
2128      * <p>Note that if the event parameter is {@code null}
2129      * the behavior is unspecified and may result in an
2130      * exception.
2131      *
2132      * @param e the window state event
2133      * @see java.awt.Component#enableEvents
2134      * @since 1.4
2135      */
2136     protected void processWindowStateEvent(WindowEvent e) {
2137         WindowStateListener listener = windowStateListener;
2138         if (listener != null) {
2139             switch (e.getID()) {
2140                 case WindowEvent.WINDOW_STATE_CHANGED:
2141                     listener.windowStateChanged(e);
2142                     break;
2143                 default:
2144                     break;
2145             }
2146         }
2147     }
2148 
2149     /**
2150      * Implements a debugging hook -- checks to see if
2151      * the user has typed <i>control-shift-F1</i>.  If so,
2152      * the list of child windows is dumped to {@code System.out}.
2153      * @param e  the keyboard event
2154      */
2155     void preProcessKeyEvent(KeyEvent e) {
2156         // Dump the list of child windows to System.out.
2157         if (e.isActionKey() && e.getKeyCode() == KeyEvent.VK_F1 &&
2158             e.isControlDown() && e.isShiftDown() &&
2159             e.getID() == KeyEvent.KEY_PRESSED) {
2160             list(System.out, 0);
2161         }
2162     }
2163 
2164     void postProcessKeyEvent(KeyEvent e) {
2165         // Do nothing
2166     }
2167 
2168 
2169     /**
2170      * Sets whether this window should always be above other windows.  If
2171      * there are multiple always-on-top windows, their relative order is
2172      * unspecified and platform dependent.
2173      * <p>
2174      * If some other window is already always-on-top then the
2175      * relative order between these windows is unspecified (depends on
2176      * platform).  No window can be brought to be over the always-on-top
2177      * window except maybe another always-on-top window.
2178      * <p>
2179      * All windows owned by an always-on-top window inherit this state and
2180      * automatically become always-on-top.  If a window ceases to be
2181      * always-on-top, the windows that it owns will no longer be
2182      * always-on-top.  When an always-on-top window is sent {@link #toBack
2183      * toBack}, its always-on-top state is set to {@code false}.
2184      *
2185      * <p> When this method is called on a window with a value of
2186      * {@code true}, and the window is visible and the platform
2187      * supports always-on-top for this window, the window is immediately
2188      * brought forward, "sticking" it in the top-most position. If the
2189      * window isn`t currently visible, this method sets the always-on-top
2190      * state to {@code true} but does not bring the window forward.
2191      * When the window is later shown, it will be always-on-top.
2192      *
2193      * <p> When this method is called on a window with a value of
2194      * {@code false} the always-on-top state is set to normal. It may also
2195      * cause an unspecified, platform-dependent change in the z-order of
2196      * top-level windows, but other always-on-top windows will remain in
2197      * top-most position. Calling this method with a value of {@code false}
2198      * on a window that has a normal state has no effect.
2199      *
2200      * <p><b>Note</b>: some platforms might not support always-on-top
2201      * windows.  To detect if always-on-top windows are supported by the
2202      * current platform, use {@link Toolkit#isAlwaysOnTopSupported()} and
2203      * {@link Window#isAlwaysOnTopSupported()}.  If always-on-top mode
2204      * isn't supported for this window or this window's toolkit does not
2205      * support always-on-top windows, calling this method has no effect.
2206      * <p>
2207      * If a SecurityManager is installed, the calling thread must be
2208      * granted the AWTPermission "setWindowAlwaysOnTop" in
2209      * order to set the value of this property. If this
2210      * permission is not granted, this method will throw a
2211      * SecurityException, and the current value of the property will
2212      * be left unchanged.
2213      *
2214      * @param alwaysOnTop true if the window should always be above other
2215      *        windows
2216      * @throws SecurityException if the calling thread does not have
2217      *         permission to set the value of always-on-top property
2218      *
2219      * @see #isAlwaysOnTop
2220      * @see #toFront
2221      * @see #toBack
2222      * @see AWTPermission
2223      * @see #isAlwaysOnTopSupported
2224      * @see #getToolkit
2225      * @see Toolkit#isAlwaysOnTopSupported
2226      * @since 1.5
2227      */
2228     public final void setAlwaysOnTop(boolean alwaysOnTop) throws SecurityException {
2229         SecurityManager security = System.getSecurityManager();
2230         if (security != null) {
2231             security.checkPermission(SecurityConstants.AWT.SET_WINDOW_ALWAYS_ON_TOP_PERMISSION);
2232         }
2233 
2234         boolean oldAlwaysOnTop;
2235         synchronized(this) {
2236             oldAlwaysOnTop = this.alwaysOnTop;
2237             this.alwaysOnTop = alwaysOnTop;
2238         }
2239         if (oldAlwaysOnTop != alwaysOnTop ) {
2240             if (isAlwaysOnTopSupported()) {
2241                 WindowPeer peer = (WindowPeer)this.peer;
2242                 synchronized(getTreeLock()) {
2243                     if (peer != null) {
2244                         peer.updateAlwaysOnTopState();
2245                     }
2246                 }
2247             }
2248             firePropertyChange("alwaysOnTop", oldAlwaysOnTop, alwaysOnTop);
2249         }
2250         for (WeakReference<Window> ref : ownedWindowList) {
2251             Window window = ref.get();
2252             if (window != null) {
2253                 try {
2254                     window.setAlwaysOnTop(alwaysOnTop);
2255                 } catch (SecurityException ignore) {
2256                 }
2257             }
2258         }
2259     }
2260 
2261     /**
2262      * Returns whether the always-on-top mode is supported for this
2263      * window. Some platforms may not support always-on-top windows, some
2264      * may support only some kinds of top-level windows; for example,
2265      * a platform may not support always-on-top modal dialogs.
2266      *
2267      * @return {@code true}, if the always-on-top mode is supported for
2268      *         this window and this window's toolkit supports always-on-top windows,
2269      *         {@code false} otherwise
2270      *
2271      * @see #setAlwaysOnTop(boolean)
2272      * @see #getToolkit
2273      * @see Toolkit#isAlwaysOnTopSupported
2274      * @since 1.6
2275      */
2276     public boolean isAlwaysOnTopSupported() {
2277         return Toolkit.getDefaultToolkit().isAlwaysOnTopSupported();
2278     }
2279 
2280 
2281     /**
2282      * Returns whether this window is an always-on-top window.
2283      * @return {@code true}, if the window is in always-on-top state,
2284      *         {@code false} otherwise
2285      * @see #setAlwaysOnTop
2286      * @since 1.5
2287      */
2288     public final boolean isAlwaysOnTop() {
2289         return alwaysOnTop;
2290     }
2291 
2292 
2293     /**
2294      * Returns the child Component of this Window that has focus if this Window
2295      * is focused; returns null otherwise.
2296      *
2297      * @return the child Component with focus, or null if this Window is not
2298      *         focused
2299      * @see #getMostRecentFocusOwner
2300      * @see #isFocused
2301      */
2302     public Component getFocusOwner() {
2303         return (isFocused())
2304             ? KeyboardFocusManager.getCurrentKeyboardFocusManager().
2305                   getFocusOwner()
2306             : null;
2307     }
2308 
2309     /**
2310      * Returns the child Component of this Window that will receive the focus
2311      * when this Window is focused. If this Window is currently focused, this
2312      * method returns the same Component as {@code getFocusOwner()}. If
2313      * this Window is not focused, then the child Component that most recently
2314      * requested focus will be returned. If no child Component has ever
2315      * requested focus, and this is a focusable Window, then this Window's
2316      * initial focusable Component is returned. If no child Component has ever
2317      * requested focus, and this is a non-focusable Window, null is returned.
2318      *
2319      * @return the child Component that will receive focus when this Window is
2320      *         focused
2321      * @see #getFocusOwner
2322      * @see #isFocused
2323      * @see #isFocusableWindow
2324      * @since 1.4
2325      */
2326     public Component getMostRecentFocusOwner() {
2327         if (isFocused()) {
2328             return getFocusOwner();
2329         } else {
2330             Component mostRecent =
2331                 KeyboardFocusManager.getMostRecentFocusOwner(this);
2332             if (mostRecent != null) {
2333                 return mostRecent;
2334             } else {
2335                 return (isFocusableWindow())
2336                     ? getFocusTraversalPolicy().getInitialComponent(this)
2337                     : null;
2338             }
2339         }
2340     }
2341 
2342     /**
2343      * Returns whether this Window is active. Only a Frame or a Dialog may be
2344      * active. The native windowing system may denote the active Window or its
2345      * children with special decorations, such as a highlighted title bar. The
2346      * active Window is always either the focused Window, or the first Frame or
2347      * Dialog that is an owner of the focused Window.
2348      *
2349      * @return whether this is the active Window.
2350      * @see #isFocused
2351      * @since 1.4
2352      */
2353     public boolean isActive() {
2354         return (KeyboardFocusManager.getCurrentKeyboardFocusManager().
2355                 getActiveWindow() == this);
2356     }
2357 
2358     /**
2359      * Returns whether this Window is focused. If there exists a focus owner,
2360      * the focused Window is the Window that is, or contains, that focus owner.
2361      * If there is no focus owner, then no Window is focused.
2362      * <p>
2363      * If the focused Window is a Frame or a Dialog it is also the active
2364      * Window. Otherwise, the active Window is the first Frame or Dialog that
2365      * is an owner of the focused Window.
2366      *
2367      * @return whether this is the focused Window.
2368      * @see #isActive
2369      * @since 1.4
2370      */
2371     public boolean isFocused() {
2372         return (KeyboardFocusManager.getCurrentKeyboardFocusManager().
2373                 getGlobalFocusedWindow() == this);
2374     }
2375 
2376     /**
2377      * Gets a focus traversal key for this Window. (See {@code
2378      * setFocusTraversalKeys} for a full description of each key.)
2379      * <p>
2380      * If the traversal key has not been explicitly set for this Window,
2381      * then this Window's parent's traversal key is returned. If the
2382      * traversal key has not been explicitly set for any of this Window's
2383      * ancestors, then the current KeyboardFocusManager's default traversal key
2384      * is returned.
2385      *
2386      * @param id one of KeyboardFocusManager.FORWARD_TRAVERSAL_KEYS,
2387      *         KeyboardFocusManager.BACKWARD_TRAVERSAL_KEYS,
2388      *         KeyboardFocusManager.UP_CYCLE_TRAVERSAL_KEYS, or
2389      *         KeyboardFocusManager.DOWN_CYCLE_TRAVERSAL_KEYS
2390      * @return the AWTKeyStroke for the specified key
2391      * @see Container#setFocusTraversalKeys
2392      * @see KeyboardFocusManager#FORWARD_TRAVERSAL_KEYS
2393      * @see KeyboardFocusManager#BACKWARD_TRAVERSAL_KEYS
2394      * @see KeyboardFocusManager#UP_CYCLE_TRAVERSAL_KEYS
2395      * @see KeyboardFocusManager#DOWN_CYCLE_TRAVERSAL_KEYS
2396      * @throws IllegalArgumentException if id is not one of
2397      *         KeyboardFocusManager.FORWARD_TRAVERSAL_KEYS,
2398      *         KeyboardFocusManager.BACKWARD_TRAVERSAL_KEYS,
2399      *         KeyboardFocusManager.UP_CYCLE_TRAVERSAL_KEYS, or
2400      *         KeyboardFocusManager.DOWN_CYCLE_TRAVERSAL_KEYS
2401      * @since 1.4
2402      */
2403     @SuppressWarnings("unchecked")
2404     public Set<AWTKeyStroke> getFocusTraversalKeys(int id) {
2405         if (id < 0 || id >= KeyboardFocusManager.TRAVERSAL_KEY_LENGTH) {
2406             throw new IllegalArgumentException("invalid focus traversal key identifier");
2407         }
2408 
2409         // Okay to return Set directly because it is an unmodifiable view
2410         @SuppressWarnings("rawtypes")
2411         Set keystrokes = (focusTraversalKeys != null)
2412             ? focusTraversalKeys[id]
2413             : null;
2414 
2415         if (keystrokes != null) {
2416             return keystrokes;
2417         } else {
2418             return KeyboardFocusManager.getCurrentKeyboardFocusManager().
2419                 getDefaultFocusTraversalKeys(id);
2420         }
2421     }
2422 
2423     /**
2424      * Does nothing because Windows must always be roots of a focus traversal
2425      * cycle. The passed-in value is ignored.
2426      *
2427      * @param focusCycleRoot this value is ignored
2428      * @see #isFocusCycleRoot
2429      * @see Container#setFocusTraversalPolicy
2430      * @see Container#getFocusTraversalPolicy
2431      * @since 1.4
2432      */
2433     public final void setFocusCycleRoot(boolean focusCycleRoot) {
2434     }
2435 
2436     /**
2437      * Always returns {@code true} because all Windows must be roots of a
2438      * focus traversal cycle.
2439      *
2440      * @return {@code true}
2441      * @see #setFocusCycleRoot
2442      * @see Container#setFocusTraversalPolicy
2443      * @see Container#getFocusTraversalPolicy
2444      * @since 1.4
2445      */
2446     public final boolean isFocusCycleRoot() {
2447         return true;
2448     }
2449 
2450     /**
2451      * Always returns {@code null} because Windows have no ancestors; they
2452      * represent the top of the Component hierarchy.
2453      *
2454      * @return {@code null}
2455      * @see Container#isFocusCycleRoot()
2456      * @since 1.4
2457      */
2458     public final Container getFocusCycleRootAncestor() {
2459         return null;
2460     }
2461 
2462     /**
2463      * Returns whether this Window can become the focused Window, that is,
2464      * whether this Window or any of its subcomponents can become the focus
2465      * owner. For a Frame or Dialog to be focusable, its focusable Window state
2466      * must be set to {@code true}. For a Window which is not a Frame or
2467      * Dialog to be focusable, its focusable Window state must be set to
2468      * {@code true}, its nearest owning Frame or Dialog must be
2469      * showing on the screen, and it must contain at least one Component in
2470      * its focus traversal cycle. If any of these conditions is not met, then
2471      * neither this Window nor any of its subcomponents can become the focus
2472      * owner.
2473      *
2474      * @return {@code true} if this Window can be the focused Window;
2475      *         {@code false} otherwise
2476      * @see #getFocusableWindowState
2477      * @see #setFocusableWindowState
2478      * @see #isShowing
2479      * @see Component#isFocusable
2480      * @since 1.4
2481      */
2482     public final boolean isFocusableWindow() {
2483         // If a Window/Frame/Dialog was made non-focusable, then it is always
2484         // non-focusable.
2485         if (!getFocusableWindowState()) {
2486             return false;
2487         }
2488 
2489         // All other tests apply only to Windows.
2490         if (this instanceof Frame || this instanceof Dialog) {
2491             return true;
2492         }
2493 
2494         // A Window must have at least one Component in its root focus
2495         // traversal cycle to be focusable.
2496         if (getFocusTraversalPolicy().getDefaultComponent(this) == null) {
2497             return false;
2498         }
2499 
2500         // A Window's nearest owning Frame or Dialog must be showing on the
2501         // screen.
2502         for (Window owner = getOwner(); owner != null;
2503              owner = owner.getOwner())
2504         {
2505             if (owner instanceof Frame || owner instanceof Dialog) {
2506                 return owner.isShowing();
2507             }
2508         }
2509 
2510         return false;
2511     }
2512 
2513     /**
2514      * Returns whether this Window can become the focused Window if it meets
2515      * the other requirements outlined in {@code isFocusableWindow}. If
2516      * this method returns {@code false}, then
2517      * {@code isFocusableWindow} will return {@code false} as well.
2518      * If this method returns {@code true}, then
2519      * {@code isFocusableWindow} may return {@code true} or
2520      * {@code false} depending upon the other requirements which must be
2521      * met in order for a Window to be focusable.
2522      * <p>
2523      * By default, all Windows have a focusable Window state of
2524      * {@code true}.
2525      *
2526      * @return whether this Window can be the focused Window
2527      * @see #isFocusableWindow
2528      * @see #setFocusableWindowState
2529      * @see #isShowing
2530      * @see Component#setFocusable
2531      * @since 1.4
2532      */
2533     public boolean getFocusableWindowState() {
2534         return focusableWindowState;
2535     }
2536 
2537     /**
2538      * Sets whether this Window can become the focused Window if it meets
2539      * the other requirements outlined in {@code isFocusableWindow}. If
2540      * this Window's focusable Window state is set to {@code false}, then
2541      * {@code isFocusableWindow} will return {@code false}. If this
2542      * Window's focusable Window state is set to {@code true}, then
2543      * {@code isFocusableWindow} may return {@code true} or
2544      * {@code false} depending upon the other requirements which must be
2545      * met in order for a Window to be focusable.
2546      * <p>
2547      * Setting a Window's focusability state to {@code false} is the
2548      * standard mechanism for an application to identify to the AWT a Window
2549      * which will be used as a floating palette or toolbar, and thus should be
2550      * a non-focusable Window.
2551      *
2552      * Setting the focusability state on a visible {@code Window}
2553      * can have a delayed effect on some platforms &#151; the actual
2554      * change may happen only when the {@code Window} becomes
2555      * hidden and then visible again.  To ensure consistent behavior
2556      * across platforms, set the {@code Window}'s focusable state
2557      * when the {@code Window} is invisible and then show it.
2558      *
2559      * @param focusableWindowState whether this Window can be the focused
2560      *        Window
2561      * @see #isFocusableWindow
2562      * @see #getFocusableWindowState
2563      * @see #isShowing
2564      * @see Component#setFocusable
2565      * @since 1.4
2566      */
2567     public void setFocusableWindowState(boolean focusableWindowState) {
2568         boolean oldFocusableWindowState;
2569         synchronized (this) {
2570             oldFocusableWindowState = this.focusableWindowState;
2571             this.focusableWindowState = focusableWindowState;
2572         }
2573         WindowPeer peer = (WindowPeer)this.peer;
2574         if (peer != null) {
2575             peer.updateFocusableWindowState();
2576         }
2577         firePropertyChange("focusableWindowState", oldFocusableWindowState,
2578                            focusableWindowState);
2579         if (oldFocusableWindowState && !focusableWindowState && isFocused()) {
2580             for (Window owner = getOwner();
2581                  owner != null;
2582                  owner = owner.getOwner())
2583                 {
2584                     Component toFocus =
2585                         KeyboardFocusManager.getMostRecentFocusOwner(owner);
2586                     if (toFocus != null && toFocus.requestFocus(false, CausedFocusEvent.Cause.ACTIVATION)) {
2587                         return;
2588                     }
2589                 }
2590             KeyboardFocusManager.getCurrentKeyboardFocusManager().
2591                 clearGlobalFocusOwnerPriv();
2592         }
2593     }
2594 
2595     /**
2596      * Sets whether this window should receive focus on
2597      * subsequently being shown (with a call to {@link #setVisible setVisible(true)}),
2598      * or being moved to the front (with a call to {@link #toFront}).
2599      * <p>
2600      * Note that {@link #setVisible setVisible(true)} may be called indirectly
2601      * (e.g. when showing an owner of the window makes the window to be shown).
2602      * {@link #toFront} may also be called indirectly (e.g. when
2603      * {@link #setVisible setVisible(true)} is called on already visible window).
2604      * In all such cases this property takes effect as well.
2605      * <p>
2606      * The value of the property is not inherited by owned windows.
2607      *
2608      * @param autoRequestFocus whether this window should be focused on
2609      *        subsequently being shown or being moved to the front
2610      * @see #isAutoRequestFocus
2611      * @see #isFocusableWindow
2612      * @see #setVisible
2613      * @see #toFront
2614      * @since 1.7
2615      */
2616     public void setAutoRequestFocus(boolean autoRequestFocus) {
2617         this.autoRequestFocus = autoRequestFocus;
2618     }
2619 
2620     /**
2621      * Returns whether this window should receive focus on subsequently being shown
2622      * (with a call to {@link #setVisible setVisible(true)}), or being moved to the front
2623      * (with a call to {@link #toFront}).
2624      * <p>
2625      * By default, the window has {@code autoRequestFocus} value of {@code true}.
2626      *
2627      * @return {@code autoRequestFocus} value
2628      * @see #setAutoRequestFocus
2629      * @since 1.7
2630      */
2631     public boolean isAutoRequestFocus() {
2632         return autoRequestFocus;
2633     }
2634 
2635     /**
2636      * Adds a PropertyChangeListener to the listener list. The listener is
2637      * registered for all bound properties of this class, including the
2638      * following:
2639      * <ul>
2640      *    <li>this Window's font ("font")</li>
2641      *    <li>this Window's background color ("background")</li>
2642      *    <li>this Window's foreground color ("foreground")</li>
2643      *    <li>this Window's focusability ("focusable")</li>
2644      *    <li>this Window's focus traversal keys enabled state
2645      *        ("focusTraversalKeysEnabled")</li>
2646      *    <li>this Window's Set of FORWARD_TRAVERSAL_KEYS
2647      *        ("forwardFocusTraversalKeys")</li>
2648      *    <li>this Window's Set of BACKWARD_TRAVERSAL_KEYS
2649      *        ("backwardFocusTraversalKeys")</li>
2650      *    <li>this Window's Set of UP_CYCLE_TRAVERSAL_KEYS
2651      *        ("upCycleFocusTraversalKeys")</li>
2652      *    <li>this Window's Set of DOWN_CYCLE_TRAVERSAL_KEYS
2653      *        ("downCycleFocusTraversalKeys")</li>
2654      *    <li>this Window's focus traversal policy ("focusTraversalPolicy")
2655      *        </li>
2656      *    <li>this Window's focusable Window state ("focusableWindowState")
2657      *        </li>
2658      *    <li>this Window's always-on-top state("alwaysOnTop")</li>
2659      * </ul>
2660      * Note that if this Window is inheriting a bound property, then no
2661      * event will be fired in response to a change in the inherited property.
2662      * <p>
2663      * If listener is null, no exception is thrown and no action is performed.
2664      *
2665      * @param    listener  the PropertyChangeListener to be added
2666      *
2667      * @see Component#removePropertyChangeListener
2668      * @see #addPropertyChangeListener(java.lang.String,java.beans.PropertyChangeListener)
2669      */
2670     public void addPropertyChangeListener(PropertyChangeListener listener) {
2671         super.addPropertyChangeListener(listener);
2672     }
2673 
2674     /**
2675      * Adds a PropertyChangeListener to the listener list for a specific
2676      * property. The specified property may be user-defined, or one of the
2677      * following:
2678      * <ul>
2679      *    <li>this Window's font ("font")</li>
2680      *    <li>this Window's background color ("background")</li>
2681      *    <li>this Window's foreground color ("foreground")</li>
2682      *    <li>this Window's focusability ("focusable")</li>
2683      *    <li>this Window's focus traversal keys enabled state
2684      *        ("focusTraversalKeysEnabled")</li>
2685      *    <li>this Window's Set of FORWARD_TRAVERSAL_KEYS
2686      *        ("forwardFocusTraversalKeys")</li>
2687      *    <li>this Window's Set of BACKWARD_TRAVERSAL_KEYS
2688      *        ("backwardFocusTraversalKeys")</li>
2689      *    <li>this Window's Set of UP_CYCLE_TRAVERSAL_KEYS
2690      *        ("upCycleFocusTraversalKeys")</li>
2691      *    <li>this Window's Set of DOWN_CYCLE_TRAVERSAL_KEYS
2692      *        ("downCycleFocusTraversalKeys")</li>
2693      *    <li>this Window's focus traversal policy ("focusTraversalPolicy")
2694      *        </li>
2695      *    <li>this Window's focusable Window state ("focusableWindowState")
2696      *        </li>
2697      *    <li>this Window's always-on-top state("alwaysOnTop")</li>
2698      * </ul>
2699      * Note that if this Window is inheriting a bound property, then no
2700      * event will be fired in response to a change in the inherited property.
2701      * <p>
2702      * If listener is null, no exception is thrown and no action is performed.
2703      *
2704      * @param propertyName one of the property names listed above
2705      * @param listener the PropertyChangeListener to be added
2706      *
2707      * @see #addPropertyChangeListener(java.beans.PropertyChangeListener)
2708      * @see Component#removePropertyChangeListener
2709      */
2710     public void addPropertyChangeListener(String propertyName,
2711                                           PropertyChangeListener listener) {
2712         super.addPropertyChangeListener(propertyName, listener);
2713     }
2714 
2715     /**
2716      * Indicates if this container is a validate root.
2717      * <p>
2718      * {@code Window} objects are the validate roots, and, therefore, they
2719      * override this method to return {@code true}.
2720      *
2721      * @return {@code true}
2722      * @since 1.7
2723      * @see java.awt.Container#isValidateRoot
2724      */
2725     @Override
2726     public boolean isValidateRoot() {
2727         return true;
2728     }
2729 
2730     /**
2731      * Dispatches an event to this window or one of its sub components.
2732      * @param e the event
2733      */
2734     void dispatchEventImpl(AWTEvent e) {
2735         if (e.getID() == ComponentEvent.COMPONENT_RESIZED) {
2736             invalidate();
2737             validate();
2738         }
2739         super.dispatchEventImpl(e);
2740     }
2741 
2742     /**
2743      * @deprecated As of JDK version 1.1
2744      * replaced by {@code dispatchEvent(AWTEvent)}.
2745      */
2746     @Deprecated
2747     public boolean postEvent(Event e) {
2748         if (handleEvent(e)) {
2749             e.consume();
2750             return true;
2751         }
2752         return false;
2753     }
2754 
2755     /**
2756      * Checks if this Window is showing on screen.
2757      * @see Component#setVisible
2758     */
2759     public boolean isShowing() {
2760         return visible;
2761     }
2762 
2763     boolean isDisposing() {
2764         return disposing;
2765     }
2766 
2767     /**
2768      * @deprecated As of J2SE 1.4, replaced by
2769      * {@link Component#applyComponentOrientation Component.applyComponentOrientation}.
2770      */
2771     @Deprecated
2772     public void applyResourceBundle(ResourceBundle rb) {
2773         applyComponentOrientation(ComponentOrientation.getOrientation(rb));
2774     }
2775 
2776     /**
2777      * @deprecated As of J2SE 1.4, replaced by
2778      * {@link Component#applyComponentOrientation Component.applyComponentOrientation}.
2779      */
2780     @Deprecated
2781     public void applyResourceBundle(String rbName) {
2782         applyResourceBundle(ResourceBundle.getBundle(rbName));
2783     }
2784 
2785    /*
2786     * Support for tracking all windows owned by this window
2787     */
2788     void addOwnedWindow(WeakReference<Window> weakWindow) {
2789         if (weakWindow != null) {
2790             synchronized(ownedWindowList) {
2791                 // this if statement should really be an assert, but we don't
2792                 // have asserts...
2793                 if (!ownedWindowList.contains(weakWindow)) {
2794                     ownedWindowList.addElement(weakWindow);
2795                 }
2796             }
2797         }
2798     }
2799 
2800     void removeOwnedWindow(WeakReference<Window> weakWindow) {
2801         if (weakWindow != null) {
2802             // synchronized block not required since removeElement is
2803             // already synchronized
2804             ownedWindowList.removeElement(weakWindow);
2805         }
2806     }
2807 
2808     void connectOwnedWindow(Window child) {
2809         child.parent = this;
2810         addOwnedWindow(child.weakThis);
2811         child.disposerRecord.updateOwner();
2812     }
2813 
2814     private void addToWindowList() {
2815         synchronized (Window.class) {
2816             @SuppressWarnings("unchecked")
2817             Vector<WeakReference<Window>> windowList = (Vector<WeakReference<Window>>)appContext.get(Window.class);
2818             if (windowList == null) {
2819                 windowList = new Vector<WeakReference<Window>>();
2820                 appContext.put(Window.class, windowList);
2821             }
2822             windowList.add(weakThis);
2823         }
2824     }
2825 
2826     private static void removeFromWindowList(AppContext context, WeakReference<Window> weakThis) {
2827         synchronized (Window.class) {
2828             @SuppressWarnings("unchecked")
2829             Vector<WeakReference<Window>> windowList = (Vector<WeakReference<Window>>)context.get(Window.class);
2830             if (windowList != null) {
2831                 windowList.remove(weakThis);
2832             }
2833         }
2834     }
2835 
2836     private void removeFromWindowList() {
2837         removeFromWindowList(appContext, weakThis);
2838     }
2839 
2840     /**
2841      * Window type.
2842      *
2843      * Synchronization: ObjectLock
2844      */
2845     private Type type = Type.NORMAL;
2846 
2847     /**
2848      * Sets the type of the window.
2849      *
2850      * This method can only be called while the window is not displayable.
2851      *
2852      * @throws IllegalComponentStateException if the window
2853      *         is displayable.
2854      * @throws IllegalArgumentException if the type is {@code null}
2855      * @see    Component#isDisplayable
2856      * @see    #getType
2857      * @since 1.7
2858      */
2859     public void setType(Type type) {
2860         if (type == null) {
2861             throw new IllegalArgumentException("type should not be null.");
2862         }
2863         synchronized (getTreeLock()) {
2864             if (isDisplayable()) {
2865                 throw new IllegalComponentStateException(
2866                         "The window is displayable.");
2867             }
2868             synchronized (getObjectLock()) {
2869                 this.type = type;
2870             }
2871         }
2872     }
2873 
2874     /**
2875      * Returns the type of the window.
2876      *
2877      * @see   #setType
2878      * @since 1.7
2879      */
2880     public Type getType() {
2881         synchronized (getObjectLock()) {
2882             return type;
2883         }
2884     }
2885 
2886     /**
2887      * The window serialized data version.
2888      *
2889      * @serial
2890      */
2891     private int windowSerializedDataVersion = 2;
2892 
2893     /**
2894      * Writes default serializable fields to stream.  Writes
2895      * a list of serializable {@code WindowListener}s and
2896      * {@code WindowFocusListener}s as optional data.
2897      * Writes a list of child windows as optional data.
2898      * Writes a list of icon images as optional data
2899      *
2900      * @param s the {@code ObjectOutputStream} to write
2901      * @serialData {@code null} terminated sequence of
2902      *    0 or more pairs; the pair consists of a {@code String}
2903      *    and {@code Object}; the {@code String}
2904      *    indicates the type of object and is one of the following:
2905      *    {@code windowListenerK} indicating a
2906      *      {@code WindowListener} object;
2907      *    {@code windowFocusWindowK} indicating a
2908      *      {@code WindowFocusListener} object;
2909      *    {@code ownedWindowK} indicating a child
2910      *      {@code Window} object
2911      *
2912      * @see AWTEventMulticaster#save(java.io.ObjectOutputStream, java.lang.String, java.util.EventListener)
2913      * @see Component#windowListenerK
2914      * @see Component#windowFocusListenerK
2915      * @see Component#ownedWindowK
2916      * @see #readObject(ObjectInputStream)
2917      */
2918     private void writeObject(ObjectOutputStream s) throws IOException {
2919         synchronized (this) {
2920             // Update old focusMgr fields so that our object stream can be read
2921             // by previous releases
2922             focusMgr = new FocusManager();
2923             focusMgr.focusRoot = this;
2924             focusMgr.focusOwner = getMostRecentFocusOwner();
2925 
2926             s.defaultWriteObject();
2927 
2928             // Clear fields so that we don't keep extra references around
2929             focusMgr = null;
2930 
2931             AWTEventMulticaster.save(s, windowListenerK, windowListener);
2932             AWTEventMulticaster.save(s, windowFocusListenerK, windowFocusListener);
2933             AWTEventMulticaster.save(s, windowStateListenerK, windowStateListener);
2934         }
2935 
2936         s.writeObject(null);
2937 
2938         synchronized (ownedWindowList) {
2939             for (int i = 0; i < ownedWindowList.size(); i++) {
2940                 Window child = ownedWindowList.elementAt(i).get();
2941                 if (child != null) {
2942                     s.writeObject(ownedWindowK);
2943                     s.writeObject(child);
2944                 }
2945             }
2946         }
2947         s.writeObject(null);
2948 
2949         //write icon array
2950         if (icons != null) {
2951             for (Image i : icons) {
2952                 if (i instanceof Serializable) {
2953                     s.writeObject(i);
2954                 }
2955             }
2956         }
2957         s.writeObject(null);
2958     }
2959 
2960     //
2961     // Part of deserialization procedure to be called before
2962     // user's code.
2963     //
2964     private void initDeserializedWindow() {
2965         setWarningString();
2966         inputContextLock = new Object();
2967 
2968         // Deserialized Windows are not yet visible.
2969         visible = false;
2970 
2971         weakThis = new WeakReference<>(this);
2972 
2973         anchor = new Object();
2974         disposerRecord = new WindowDisposerRecord(appContext, this);
2975         sun.java2d.Disposer.addRecord(anchor, disposerRecord);
2976 
2977         addToWindowList();
2978         initGC(null);
2979         ownedWindowList = new Vector<>();
2980     }
2981 
2982     private void deserializeResources(ObjectInputStream s)
2983         throws ClassNotFoundException, IOException, HeadlessException {
2984 
2985             if (windowSerializedDataVersion < 2) {
2986                 // Translate old-style focus tracking to new model. For 1.4 and
2987                 // later releases, we'll rely on the Window's initial focusable
2988                 // Component.
2989                 if (focusMgr != null) {
2990                     if (focusMgr.focusOwner != null) {
2991                         KeyboardFocusManager.
2992                             setMostRecentFocusOwner(this, focusMgr.focusOwner);
2993                     }
2994                 }
2995 
2996                 // This field is non-transient and relies on default serialization.
2997                 // However, the default value is insufficient, so we need to set
2998                 // it explicitly for object data streams prior to 1.4.
2999                 focusableWindowState = true;
3000 
3001 
3002             }
3003 
3004         Object keyOrNull;
3005         while(null != (keyOrNull = s.readObject())) {
3006             String key = ((String)keyOrNull).intern();
3007 
3008             if (windowListenerK == key) {
3009                 addWindowListener((WindowListener)(s.readObject()));
3010             } else if (windowFocusListenerK == key) {
3011                 addWindowFocusListener((WindowFocusListener)(s.readObject()));
3012             } else if (windowStateListenerK == key) {
3013                 addWindowStateListener((WindowStateListener)(s.readObject()));
3014             } else // skip value for unrecognized key
3015                 s.readObject();
3016         }
3017 
3018         try {
3019             while (null != (keyOrNull = s.readObject())) {
3020                 String key = ((String)keyOrNull).intern();
3021 
3022                 if (ownedWindowK == key)
3023                     connectOwnedWindow((Window) s.readObject());
3024 
3025                 else // skip value for unrecognized key
3026                     s.readObject();
3027             }
3028 
3029             //read icons
3030             Object obj = s.readObject(); //Throws OptionalDataException
3031                                          //for pre1.6 objects.
3032             icons = new ArrayList<Image>(); //Frame.readObject() assumes
3033                                             //pre1.6 version if icons is null.
3034             while (obj != null) {
3035                 if (obj instanceof Image) {
3036                     icons.add((Image)obj);
3037                 }
3038                 obj = s.readObject();
3039             }
3040         }
3041         catch (OptionalDataException e) {
3042             // 1.1 serialized form
3043             // ownedWindowList will be updated by Frame.readObject
3044         }
3045 
3046     }
3047 
3048     /**
3049      * Reads the {@code ObjectInputStream} and an optional
3050      * list of listeners to receive various events fired by
3051      * the component; also reads a list of
3052      * (possibly {@code null}) child windows.
3053      * Unrecognized keys or values will be ignored.
3054      *
3055      * @param s the {@code ObjectInputStream} to read
3056      * @exception HeadlessException if
3057      *   {@code GraphicsEnvironment.isHeadless} returns
3058      *   {@code true}
3059      * @see java.awt.GraphicsEnvironment#isHeadless
3060      * @see #writeObject
3061      */
3062     private void readObject(ObjectInputStream s)
3063       throws ClassNotFoundException, IOException, HeadlessException
3064     {
3065          GraphicsEnvironment.checkHeadless();
3066          initDeserializedWindow();
3067          ObjectInputStream.GetField f = s.readFields();
3068 
3069          syncLWRequests = f.get("syncLWRequests", systemSyncLWRequests);
3070          state = f.get("state", 0);
3071          focusableWindowState = f.get("focusableWindowState", true);
3072          windowSerializedDataVersion = f.get("windowSerializedDataVersion", 1);
3073          locationByPlatform = f.get("locationByPlatform", locationByPlatformProp);
3074          // Note: 1.4 (or later) doesn't use focusMgr
3075          focusMgr = (FocusManager)f.get("focusMgr", null);
3076          Dialog.ModalExclusionType et = (Dialog.ModalExclusionType)
3077              f.get("modalExclusionType", Dialog.ModalExclusionType.NO_EXCLUDE);
3078          setModalExclusionType(et); // since 6.0
3079          boolean aot = f.get("alwaysOnTop", false);
3080          if(aot) {
3081              setAlwaysOnTop(aot); // since 1.5; subject to permission check
3082          }
3083          shape = (Shape)f.get("shape", null);
3084          opacity = (Float)f.get("opacity", 1.0f);
3085 
3086          this.securityWarningWidth = 0;
3087          this.securityWarningHeight = 0;
3088          this.securityWarningPointX = 2.0;
3089          this.securityWarningPointY = 0.0;
3090          this.securityWarningAlignmentX = RIGHT_ALIGNMENT;
3091          this.securityWarningAlignmentY = TOP_ALIGNMENT;
3092 
3093          deserializeResources(s);
3094     }
3095 
3096     /*
3097      * --- Accessibility Support ---
3098      *
3099      */
3100 
3101     /**
3102      * Gets the AccessibleContext associated with this Window.
3103      * For windows, the AccessibleContext takes the form of an
3104      * AccessibleAWTWindow.
3105      * A new AccessibleAWTWindow instance is created if necessary.
3106      *
3107      * @return an AccessibleAWTWindow that serves as the
3108      *         AccessibleContext of this Window
3109      * @since 1.3
3110      */
3111     public AccessibleContext getAccessibleContext() {
3112         if (accessibleContext == null) {
3113             accessibleContext = new AccessibleAWTWindow();
3114         }
3115         return accessibleContext;
3116     }
3117 
3118     /**
3119      * This class implements accessibility support for the
3120      * {@code Window} class.  It provides an implementation of the
3121      * Java Accessibility API appropriate to window user-interface elements.
3122      * @since 1.3
3123      */
3124     protected class AccessibleAWTWindow extends AccessibleAWTContainer
3125     {
3126         /*
3127          * JDK 1.3 serialVersionUID
3128          */
3129         private static final long serialVersionUID = 4215068635060671780L;
3130 
3131         /**
3132          * Get the role of this object.
3133          *
3134          * @return an instance of AccessibleRole describing the role of the
3135          * object
3136          * @see javax.accessibility.AccessibleRole
3137          */
3138         public AccessibleRole getAccessibleRole() {
3139             return AccessibleRole.WINDOW;
3140         }
3141 
3142         /**
3143          * Get the state of this object.
3144          *
3145          * @return an instance of AccessibleStateSet containing the current
3146          * state set of the object
3147          * @see javax.accessibility.AccessibleState
3148          */
3149         public AccessibleStateSet getAccessibleStateSet() {
3150             AccessibleStateSet states = super.getAccessibleStateSet();
3151             if (getFocusOwner() != null) {
3152                 states.add(AccessibleState.ACTIVE);
3153             }
3154             return states;
3155         }
3156 
3157     } // inner class AccessibleAWTWindow
3158 
3159     @Override
3160     void setGraphicsConfiguration(GraphicsConfiguration gc) {
3161         if (gc == null) {
3162             gc = GraphicsEnvironment.
3163                     getLocalGraphicsEnvironment().
3164                     getDefaultScreenDevice().
3165                     getDefaultConfiguration();
3166         }
3167         synchronized (getTreeLock()) {
3168             super.setGraphicsConfiguration(gc);
3169             if (log.isLoggable(PlatformLogger.Level.FINER)) {
3170                 log.finer("+ Window.setGraphicsConfiguration(): new GC is \n+ " + getGraphicsConfiguration_NoClientCode() + "\n+ this is " + this);
3171             }
3172         }
3173     }
3174 
3175     /**
3176      * Sets the location of the window relative to the specified
3177      * component according to the following scenarios.
3178      * <p>
3179      * The target screen mentioned below is a screen to which
3180      * the window should be placed after the setLocationRelativeTo
3181      * method is called.
3182      * <ul>
3183      * <li>If the component is {@code null}, or the {@code
3184      * GraphicsConfiguration} associated with this component is
3185      * {@code null}, the window is placed in the center of the
3186      * screen. The center point can be obtained with the {@link
3187      * GraphicsEnvironment#getCenterPoint
3188      * GraphicsEnvironment.getCenterPoint} method.
3189      * <li>If the component is not {@code null}, but it is not
3190      * currently showing, the window is placed in the center of
3191      * the target screen defined by the {@code
3192      * GraphicsConfiguration} associated with this component.
3193      * <li>If the component is not {@code null} and is shown on
3194      * the screen, then the window is located in such a way that
3195      * the center of the window coincides with the center of the
3196      * component.
3197      * </ul>
3198      * <p>
3199      * If the screens configuration does not allow the window to
3200      * be moved from one screen to another, then the window is
3201      * only placed at the location determined according to the
3202      * above conditions and its {@code GraphicsConfiguration} is
3203      * not changed.
3204      * <p>
3205      * <b>Note</b>: If the lower edge of the window is out of the screen,
3206      * then the window is placed to the side of the {@code Component}
3207      * that is closest to the center of the screen. So if the
3208      * component is on the right part of the screen, the window
3209      * is placed to its left, and vice versa.
3210      * <p>
3211      * If after the window location has been calculated, the upper,
3212      * left, or right edge of the window is out of the screen,
3213      * then the window is located in such a way that the upper,
3214      * left, or right edge of the window coincides with the
3215      * corresponding edge of the screen. If both left and right
3216      * edges of the window are out of the screen, the window is
3217      * placed at the left side of the screen. The similar placement
3218      * will occur if both top and bottom edges are out of the screen.
3219      * In that case, the window is placed at the top side of the screen.
3220      * <p>
3221      * The method changes the geometry-related data. Therefore,
3222      * the native windowing system may ignore such requests, or it may modify
3223      * the requested data, so that the {@code Window} object is placed and sized
3224      * in a way that corresponds closely to the desktop settings.
3225      *
3226      * @param c  the component in relation to which the window's location
3227      *           is determined
3228      * @see java.awt.GraphicsEnvironment#getCenterPoint
3229      * @since 1.4
3230      */
3231     public void setLocationRelativeTo(Component c) {
3232         // target location
3233         int dx = 0, dy = 0;
3234         // target GC
3235         GraphicsConfiguration gc = getGraphicsConfiguration_NoClientCode();
3236         Rectangle gcBounds = gc.getBounds();
3237 
3238         Dimension windowSize = getSize();
3239 
3240         // search a top-level of c
3241         Window componentWindow = SunToolkit.getContainingWindow(c);
3242         if ((c == null) || (componentWindow == null)) {
3243             GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment();
3244             gc = ge.getDefaultScreenDevice().getDefaultConfiguration();
3245             gcBounds = gc.getBounds();
3246             Point centerPoint = ge.getCenterPoint();
3247             dx = centerPoint.x - windowSize.width / 2;
3248             dy = centerPoint.y - windowSize.height / 2;
3249         } else if (!c.isShowing()) {
3250             gc = componentWindow.getGraphicsConfiguration();
3251             gcBounds = gc.getBounds();
3252             dx = gcBounds.x + (gcBounds.width - windowSize.width) / 2;
3253             dy = gcBounds.y + (gcBounds.height - windowSize.height) / 2;
3254         } else {
3255             gc = componentWindow.getGraphicsConfiguration();
3256             gcBounds = gc.getBounds();
3257             Dimension compSize = c.getSize();
3258             Point compLocation = c.getLocationOnScreen();
3259             dx = compLocation.x + ((compSize.width - windowSize.width) / 2);
3260             dy = compLocation.y + ((compSize.height - windowSize.height) / 2);
3261 
3262             // Adjust for bottom edge being offscreen
3263             if (dy + windowSize.height > gcBounds.y + gcBounds.height) {
3264                 dy = gcBounds.y + gcBounds.height - windowSize.height;
3265                 if (compLocation.x - gcBounds.x + compSize.width / 2 < gcBounds.width / 2) {
3266                     dx = compLocation.x + compSize.width;
3267                 } else {
3268                     dx = compLocation.x - windowSize.width;
3269                 }
3270             }
3271         }
3272 
3273         // Avoid being placed off the edge of the screen:
3274         // bottom
3275         if (dy + windowSize.height > gcBounds.y + gcBounds.height) {
3276             dy = gcBounds.y + gcBounds.height - windowSize.height;
3277         }
3278         // top
3279         if (dy < gcBounds.y) {
3280             dy = gcBounds.y;
3281         }
3282         // right
3283         if (dx + windowSize.width > gcBounds.x + gcBounds.width) {
3284             dx = gcBounds.x + gcBounds.width - windowSize.width;
3285         }
3286         // left
3287         if (dx < gcBounds.x) {
3288             dx = gcBounds.x;
3289         }
3290 
3291         setLocation(dx, dy);
3292     }
3293 
3294     /**
3295      * Overridden from Component.  Top-level Windows should not propagate a
3296      * MouseWheelEvent beyond themselves into their owning Windows.
3297      */
3298     void deliverMouseWheelToAncestor(MouseWheelEvent e) {}
3299 
3300     /**
3301      * Overridden from Component.  Top-level Windows don't dispatch to ancestors
3302      */
3303     boolean dispatchMouseWheelToAncestor(MouseWheelEvent e) {return false;}
3304 
3305     /**
3306      * Creates a new strategy for multi-buffering on this component.
3307      * Multi-buffering is useful for rendering performance.  This method
3308      * attempts to create the best strategy available with the number of
3309      * buffers supplied.  It will always create a {@code BufferStrategy}
3310      * with that number of buffers.
3311      * A page-flipping strategy is attempted first, then a blitting strategy
3312      * using accelerated buffers.  Finally, an unaccelerated blitting
3313      * strategy is used.
3314      * <p>
3315      * Each time this method is called,
3316      * the existing buffer strategy for this component is discarded.
3317      * @param numBuffers number of buffers to create
3318      * @exception IllegalArgumentException if numBuffers is less than 1.
3319      * @exception IllegalStateException if the component is not displayable
3320      * @see #isDisplayable
3321      * @see #getBufferStrategy
3322      * @since 1.4
3323      */
3324     public void createBufferStrategy(int numBuffers) {
3325         super.createBufferStrategy(numBuffers);
3326     }
3327 
3328     /**
3329      * Creates a new strategy for multi-buffering on this component with the
3330      * required buffer capabilities.  This is useful, for example, if only
3331      * accelerated memory or page flipping is desired (as specified by the
3332      * buffer capabilities).
3333      * <p>
3334      * Each time this method
3335      * is called, the existing buffer strategy for this component is discarded.
3336      * @param numBuffers number of buffers to create, including the front buffer
3337      * @param caps the required capabilities for creating the buffer strategy;
3338      * cannot be {@code null}
3339      * @exception AWTException if the capabilities supplied could not be
3340      * supported or met; this may happen, for example, if there is not enough
3341      * accelerated memory currently available, or if page flipping is specified
3342      * but not possible.
3343      * @exception IllegalArgumentException if numBuffers is less than 1, or if
3344      * caps is {@code null}
3345      * @see #getBufferStrategy
3346      * @since 1.4
3347      */
3348     public void createBufferStrategy(int numBuffers,
3349         BufferCapabilities caps) throws AWTException {
3350         super.createBufferStrategy(numBuffers, caps);
3351     }
3352 
3353     /**
3354      * Returns the {@code BufferStrategy} used by this component.  This
3355      * method will return null if a {@code BufferStrategy} has not yet
3356      * been created or has been disposed.
3357      *
3358      * @return the buffer strategy used by this component
3359      * @see #createBufferStrategy
3360      * @since 1.4
3361      */
3362     public BufferStrategy getBufferStrategy() {
3363         return super.getBufferStrategy();
3364     }
3365 
3366     Component getTemporaryLostComponent() {
3367         return temporaryLostComponent;
3368     }
3369     Component setTemporaryLostComponent(Component component) {
3370         Component previousComp = temporaryLostComponent;
3371         // Check that "component" is an acceptable focus owner and don't store it otherwise
3372         // - or later we will have problems with opposite while handling  WINDOW_GAINED_FOCUS
3373         if (component == null || component.canBeFocusOwner()) {
3374             temporaryLostComponent = component;
3375         } else {
3376             temporaryLostComponent = null;
3377         }
3378         return previousComp;
3379     }
3380 
3381     /**
3382      * Checks whether this window can contain focus owner.
3383      * Verifies that it is focusable and as container it can container focus owner.
3384      * @since 1.5
3385      */
3386     boolean canContainFocusOwner(Component focusOwnerCandidate) {
3387         return super.canContainFocusOwner(focusOwnerCandidate) && isFocusableWindow();
3388     }
3389 
3390     private boolean locationByPlatform = locationByPlatformProp;
3391 
3392 
3393     /**
3394      * Sets whether this Window should appear at the default location for the
3395      * native windowing system or at the current location (returned by
3396      * {@code getLocation}) the next time the Window is made visible.
3397      * This behavior resembles a native window shown without programmatically
3398      * setting its location.  Most windowing systems cascade windows if their
3399      * locations are not explicitly set. The actual location is determined once the
3400      * window is shown on the screen.
3401      * <p>
3402      * This behavior can also be enabled by setting the System Property
3403      * "java.awt.Window.locationByPlatform" to "true", though calls to this method
3404      * take precedence.
3405      * <p>
3406      * Calls to {@code setVisible}, {@code setLocation} and
3407      * {@code setBounds} after calling {@code setLocationByPlatform} clear
3408      * this property of the Window.
3409      * <p>
3410      * For example, after the following code is executed:
3411      * <pre>
3412      * setLocationByPlatform(true);
3413      * setVisible(true);
3414      * boolean flag = isLocationByPlatform();
3415      * </pre>
3416      * The window will be shown at platform's default location and
3417      * {@code flag} will be {@code false}.
3418      * <p>
3419      * In the following sample:
3420      * <pre>
3421      * setLocationByPlatform(true);
3422      * setLocation(10, 10);
3423      * boolean flag = isLocationByPlatform();
3424      * setVisible(true);
3425      * </pre>
3426      * The window will be shown at (10, 10) and {@code flag} will be
3427      * {@code false}.
3428      *
3429      * @param locationByPlatform {@code true} if this Window should appear
3430      *        at the default location, {@code false} if at the current location
3431      * @throws IllegalComponentStateException if the window
3432      *         is showing on screen and locationByPlatform is {@code true}.
3433      * @see #setLocation
3434      * @see #isShowing
3435      * @see #setVisible
3436      * @see #isLocationByPlatform
3437      * @see java.lang.System#getProperty(String)
3438      * @since 1.5
3439      */
3440     public void setLocationByPlatform(boolean locationByPlatform) {
3441         synchronized (getTreeLock()) {
3442             if (locationByPlatform && isShowing()) {
3443                 throw new IllegalComponentStateException("The window is showing on screen.");
3444             }
3445             this.locationByPlatform = locationByPlatform;
3446         }
3447     }
3448 
3449     /**
3450      * Returns {@code true} if this Window will appear at the default location
3451      * for the native windowing system the next time this Window is made visible.
3452      * This method always returns {@code false} if the Window is showing on the
3453      * screen.
3454      *
3455      * @return whether this Window will appear at the default location
3456      * @see #setLocationByPlatform
3457      * @see #isShowing
3458      * @since 1.5
3459      */
3460     public boolean isLocationByPlatform() {
3461         synchronized (getTreeLock()) {
3462             return locationByPlatform;
3463         }
3464     }
3465 
3466     /**
3467      * {@inheritDoc}
3468      * <p>
3469      * The {@code width} or {@code height} values
3470      * are automatically enlarged if either is less than
3471      * the minimum size as specified by previous call to
3472      * {@code setMinimumSize}.
3473      * <p>
3474      * The method changes the geometry-related data. Therefore,
3475      * the native windowing system may ignore such requests, or it may modify
3476      * the requested data, so that the {@code Window} object is placed and sized
3477      * in a way that corresponds closely to the desktop settings.
3478      *
3479      * @see #getBounds
3480      * @see #setLocation(int, int)
3481      * @see #setLocation(Point)
3482      * @see #setSize(int, int)
3483      * @see #setSize(Dimension)
3484      * @see #setMinimumSize
3485      * @see #setLocationByPlatform
3486      * @see #isLocationByPlatform
3487      * @since 1.6
3488      */
3489     public void setBounds(int x, int y, int width, int height) {
3490         synchronized (getTreeLock()) {
3491             if (getBoundsOp() == ComponentPeer.SET_LOCATION ||
3492                 getBoundsOp() == ComponentPeer.SET_BOUNDS)
3493             {
3494                 locationByPlatform = false;
3495             }
3496             super.setBounds(x, y, width, height);
3497         }
3498     }
3499 
3500     /**
3501      * {@inheritDoc}
3502      * <p>
3503      * The {@code r.width} or {@code r.height} values
3504      * will be automatically enlarged if either is less than
3505      * the minimum size as specified by previous call to
3506      * {@code setMinimumSize}.
3507      * <p>
3508      * The method changes the geometry-related data. Therefore,
3509      * the native windowing system may ignore such requests, or it may modify
3510      * the requested data, so that the {@code Window} object is placed and sized
3511      * in a way that corresponds closely to the desktop settings.
3512      *
3513      * @see #getBounds
3514      * @see #setLocation(int, int)
3515      * @see #setLocation(Point)
3516      * @see #setSize(int, int)
3517      * @see #setSize(Dimension)
3518      * @see #setMinimumSize
3519      * @see #setLocationByPlatform
3520      * @see #isLocationByPlatform
3521      * @since 1.6
3522      */
3523     public void setBounds(Rectangle r) {
3524         setBounds(r.x, r.y, r.width, r.height);
3525     }
3526 
3527     /**
3528      * Determines whether this component will be displayed on the screen.
3529      * @return {@code true} if the component and all of its ancestors
3530      *          until a toplevel window are visible, {@code false} otherwise
3531      */
3532     boolean isRecursivelyVisible() {
3533         // 5079694 fix: for a toplevel to be displayed, its parent doesn't have to be visible.
3534         // We're overriding isRecursivelyVisible to implement this policy.
3535         return visible;
3536     }
3537 
3538 
3539     // ******************** SHAPES & TRANSPARENCY CODE ********************
3540 
3541     /**
3542      * Returns the opacity of the window.
3543      *
3544      * @return the opacity of the window
3545      *
3546      * @see Window#setOpacity(float)
3547      * @see GraphicsDevice.WindowTranslucency
3548      *
3549      * @since 1.7
3550      */
3551     public float getOpacity() {
3552         synchronized (getTreeLock()) {
3553             return opacity;
3554         }
3555     }
3556 
3557     /**
3558      * Sets the opacity of the window.
3559      * <p>
3560      * The opacity value is in the range [0..1]. Note that setting the opacity
3561      * level of 0 may or may not disable the mouse event handling on this
3562      * window. This is a platform-dependent behavior.
3563      * <p>
3564      * The following conditions must be met in order to set the opacity value
3565      * less than {@code 1.0f}:
3566      * <ul>
3567      * <li>The {@link GraphicsDevice.WindowTranslucency#TRANSLUCENT TRANSLUCENT}
3568      * translucency must be supported by the underlying system
3569      * <li>The window must be undecorated (see {@link Frame#setUndecorated}
3570      * and {@link Dialog#setUndecorated})
3571      * <li>The window must not be in full-screen mode (see {@link
3572      * GraphicsDevice#setFullScreenWindow(Window)})
3573      * </ul>
3574      * <p>
3575      * If the requested opacity value is less than {@code 1.0f}, and any of the
3576      * above conditions are not met, the window opacity will not change,
3577      * and the {@code IllegalComponentStateException} will be thrown.
3578      * <p>
3579      * The translucency levels of individual pixels may also be effected by the
3580      * alpha component of their color (see {@link Window#setBackground(Color)}) and the
3581      * current shape of this window (see {@link #setShape(Shape)}).
3582      *
3583      * @param opacity the opacity level to set to the window
3584      *
3585      * @throws IllegalArgumentException if the opacity is out of the range
3586      *     [0..1]
3587      * @throws IllegalComponentStateException if the window is decorated and
3588      *     the opacity is less than {@code 1.0f}
3589      * @throws IllegalComponentStateException if the window is in full screen
3590      *     mode, and the opacity is less than {@code 1.0f}
3591      * @throws UnsupportedOperationException if the {@code
3592      *     GraphicsDevice.WindowTranslucency#TRANSLUCENT TRANSLUCENT}
3593      *     translucency is not supported and the opacity is less than
3594      *     {@code 1.0f}
3595      *
3596      * @see Window#getOpacity
3597      * @see Window#setBackground(Color)
3598      * @see Window#setShape(Shape)
3599      * @see Frame#isUndecorated
3600      * @see Dialog#isUndecorated
3601      * @see GraphicsDevice.WindowTranslucency
3602      * @see GraphicsDevice#isWindowTranslucencySupported(GraphicsDevice.WindowTranslucency)
3603      *
3604      * @since 1.7
3605      */
3606     public void setOpacity(float opacity) {
3607         synchronized (getTreeLock()) {
3608             if (opacity < 0.0f || opacity > 1.0f) {
3609                 throw new IllegalArgumentException(
3610                     "The value of opacity should be in the range [0.0f .. 1.0f].");
3611             }
3612             if (opacity < 1.0f) {
3613                 GraphicsConfiguration gc = getGraphicsConfiguration();
3614                 GraphicsDevice gd = gc.getDevice();
3615                 if (gc.getDevice().getFullScreenWindow() == this) {
3616                     throw new IllegalComponentStateException(
3617                         "Setting opacity for full-screen window is not supported.");
3618                 }
3619                 if (!gd.isWindowTranslucencySupported(
3620                     GraphicsDevice.WindowTranslucency.TRANSLUCENT))
3621                 {
3622                     throw new UnsupportedOperationException(
3623                         "TRANSLUCENT translucency is not supported.");
3624                 }
3625             }
3626             this.opacity = opacity;
3627             WindowPeer peer = (WindowPeer)getPeer();
3628             if (peer != null) {
3629                 peer.setOpacity(opacity);
3630             }
3631         }
3632     }
3633 
3634     /**
3635      * Returns the shape of the window.
3636      *
3637      * The value returned by this method may not be the same as
3638      * previously set with {@code setShape(shape)}, but it is guaranteed
3639      * to represent the same shape.
3640      *
3641      * @return the shape of the window or {@code null} if no
3642      *     shape is specified for the window
3643      *
3644      * @see Window#setShape(Shape)
3645      * @see GraphicsDevice.WindowTranslucency
3646      *
3647      * @since 1.7
3648      */
3649     public Shape getShape() {
3650         synchronized (getTreeLock()) {
3651             return shape == null ? null : new Path2D.Float(shape);
3652         }
3653     }
3654 
3655     /**
3656      * Sets the shape of the window.
3657      * <p>
3658      * Setting a shape cuts off some parts of the window. Only the parts that
3659      * belong to the given {@link Shape} remain visible and clickable. If
3660      * the shape argument is {@code null}, this method restores the default
3661      * shape, making the window rectangular on most platforms.
3662      * <p>
3663      * The following conditions must be met to set a non-null shape:
3664      * <ul>
3665      * <li>The {@link GraphicsDevice.WindowTranslucency#PERPIXEL_TRANSPARENT
3666      * PERPIXEL_TRANSPARENT} translucency must be supported by the
3667      * underlying system
3668      * <li>The window must be undecorated (see {@link Frame#setUndecorated}
3669      * and {@link Dialog#setUndecorated})
3670      * <li>The window must not be in full-screen mode (see {@link
3671      * GraphicsDevice#setFullScreenWindow(Window)})
3672      * </ul>
3673      * <p>
3674      * If the requested shape is not {@code null}, and any of the above
3675      * conditions are not met, the shape of this window will not change,
3676      * and either the {@code UnsupportedOperationException} or {@code
3677      * IllegalComponentStateException} will be thrown.
3678      * <p>
3679      * The translucency levels of individual pixels may also be effected by the
3680      * alpha component of their color (see {@link Window#setBackground(Color)}) and the
3681      * opacity value (see {@link #setOpacity(float)}). See {@link
3682      * GraphicsDevice.WindowTranslucency} for more details.
3683      *
3684      * @param shape the shape to set to the window
3685      *
3686      * @throws IllegalComponentStateException if the shape is not {@code
3687      *     null} and the window is decorated
3688      * @throws IllegalComponentStateException if the shape is not {@code
3689      *     null} and the window is in full-screen mode
3690      * @throws UnsupportedOperationException if the shape is not {@code
3691      *     null} and {@link GraphicsDevice.WindowTranslucency#PERPIXEL_TRANSPARENT
3692      *     PERPIXEL_TRANSPARENT} translucency is not supported
3693      *
3694      * @see Window#getShape()
3695      * @see Window#setBackground(Color)
3696      * @see Window#setOpacity(float)
3697      * @see Frame#isUndecorated
3698      * @see Dialog#isUndecorated
3699      * @see GraphicsDevice.WindowTranslucency
3700      * @see GraphicsDevice#isWindowTranslucencySupported(GraphicsDevice.WindowTranslucency)
3701      *
3702      * @since 1.7
3703      */
3704     public void setShape(Shape shape) {
3705         synchronized (getTreeLock()) {
3706             if (shape != null) {
3707                 GraphicsConfiguration gc = getGraphicsConfiguration();
3708                 GraphicsDevice gd = gc.getDevice();
3709                 if (gc.getDevice().getFullScreenWindow() == this) {
3710                     throw new IllegalComponentStateException(
3711                         "Setting shape for full-screen window is not supported.");
3712                 }
3713                 if (!gd.isWindowTranslucencySupported(
3714                         GraphicsDevice.WindowTranslucency.PERPIXEL_TRANSPARENT))
3715                 {
3716                     throw new UnsupportedOperationException(
3717                         "PERPIXEL_TRANSPARENT translucency is not supported.");
3718                 }
3719             }
3720             this.shape = (shape == null) ? null : new Path2D.Float(shape);
3721             WindowPeer peer = (WindowPeer)getPeer();
3722             if (peer != null) {
3723                 peer.applyShape(shape == null ? null : Region.getInstance(shape, null));
3724             }
3725         }
3726     }
3727 
3728     /**
3729      * Gets the background color of this window.
3730      * <p>
3731      * Note that the alpha component of the returned color indicates whether
3732      * the window is in the non-opaque (per-pixel translucent) mode.
3733      *
3734      * @return this component's background color
3735      *
3736      * @see Window#setBackground(Color)
3737      * @see Window#isOpaque
3738      * @see GraphicsDevice.WindowTranslucency
3739      */
3740     @Override
3741     public Color getBackground() {
3742         return super.getBackground();
3743     }
3744 
3745     /**
3746      * Sets the background color of this window.
3747      * <p>
3748      * If the windowing system supports the {@link
3749      * GraphicsDevice.WindowTranslucency#PERPIXEL_TRANSLUCENT PERPIXEL_TRANSLUCENT}
3750      * translucency, the alpha component of the given background color
3751      * may effect the mode of operation for this window: it indicates whether
3752      * this window must be opaque (alpha equals {@code 1.0f}) or per-pixel translucent
3753      * (alpha is less than {@code 1.0f}). If the given background color is
3754      * {@code null}, the window is considered completely opaque.
3755      * <p>
3756      * All the following conditions must be met to enable the per-pixel
3757      * transparency mode for this window:
3758      * <ul>
3759      * <li>The {@link GraphicsDevice.WindowTranslucency#PERPIXEL_TRANSLUCENT
3760      * PERPIXEL_TRANSLUCENT} translucency must be supported by the graphics
3761      * device where this window is located
3762      * <li>The window must be undecorated (see {@link Frame#setUndecorated}
3763      * and {@link Dialog#setUndecorated})
3764      * <li>The window must not be in full-screen mode (see {@link
3765      * GraphicsDevice#setFullScreenWindow(Window)})
3766      * </ul>
3767      * <p>
3768      * If the alpha component of the requested background color is less than
3769      * {@code 1.0f}, and any of the above conditions are not met, the background
3770      * color of this window will not change, the alpha component of the given
3771      * background color will not affect the mode of operation for this window,
3772      * and either the {@code UnsupportedOperationException} or {@code
3773      * IllegalComponentStateException} will be thrown.
3774      * <p>
3775      * When the window is per-pixel translucent, the drawing sub-system
3776      * respects the alpha value of each individual pixel. If a pixel gets
3777      * painted with the alpha color component equal to zero, it becomes
3778      * visually transparent. If the alpha of the pixel is equal to 1.0f, the
3779      * pixel is fully opaque. Interim values of the alpha color component make
3780      * the pixel semi-transparent. In this mode, the background of the window
3781      * gets painted with the alpha value of the given background color. If the
3782      * alpha value of the argument of this method is equal to {@code 0}, the
3783      * background is not painted at all.
3784      * <p>
3785      * The actual level of translucency of a given pixel also depends on window
3786      * opacity (see {@link #setOpacity(float)}), as well as the current shape of
3787      * this window (see {@link #setShape(Shape)}).
3788      * <p>
3789      * Note that painting a pixel with the alpha value of {@code 0} may or may
3790      * not disable the mouse event handling on this pixel. This is a
3791      * platform-dependent behavior. To make sure the mouse events do not get
3792      * dispatched to a particular pixel, the pixel must be excluded from the
3793      * shape of the window.
3794      * <p>
3795      * Enabling the per-pixel translucency mode may change the graphics
3796      * configuration of this window due to the native platform requirements.
3797      *
3798      * @param bgColor the color to become this window's background color.
3799      *
3800      * @throws IllegalComponentStateException if the alpha value of the given
3801      *     background color is less than {@code 1.0f} and the window is decorated
3802      * @throws IllegalComponentStateException if the alpha value of the given
3803      *     background color is less than {@code 1.0f} and the window is in
3804      *     full-screen mode
3805      * @throws UnsupportedOperationException if the alpha value of the given
3806      *     background color is less than {@code 1.0f} and {@link
3807      *     GraphicsDevice.WindowTranslucency#PERPIXEL_TRANSLUCENT
3808      *     PERPIXEL_TRANSLUCENT} translucency is not supported
3809      *
3810      * @see Window#getBackground
3811      * @see Window#isOpaque
3812      * @see Window#setOpacity(float)
3813      * @see Window#setShape(Shape)
3814      * @see Frame#isUndecorated
3815      * @see Dialog#isUndecorated
3816      * @see GraphicsDevice.WindowTranslucency
3817      * @see GraphicsDevice#isWindowTranslucencySupported(GraphicsDevice.WindowTranslucency)
3818      * @see GraphicsConfiguration#isTranslucencyCapable()
3819      */
3820     @Override
3821     public void setBackground(Color bgColor) {
3822         Color oldBg = getBackground();
3823         super.setBackground(bgColor);
3824         if (oldBg != null && oldBg.equals(bgColor)) {
3825             return;
3826         }
3827         int oldAlpha = oldBg != null ? oldBg.getAlpha() : 255;
3828         int alpha = bgColor != null ? bgColor.getAlpha() : 255;
3829         if ((oldAlpha == 255) && (alpha < 255)) { // non-opaque window
3830             GraphicsConfiguration gc = getGraphicsConfiguration();
3831             GraphicsDevice gd = gc.getDevice();
3832             if (gc.getDevice().getFullScreenWindow() == this) {
3833                 throw new IllegalComponentStateException(
3834                     "Making full-screen window non opaque is not supported.");
3835             }
3836             if (!gc.isTranslucencyCapable()) {
3837                 GraphicsConfiguration capableGC = gd.getTranslucencyCapableGC();
3838                 if (capableGC == null) {
3839                     throw new UnsupportedOperationException(
3840                         "PERPIXEL_TRANSLUCENT translucency is not supported");
3841                 }
3842                 setGraphicsConfiguration(capableGC);
3843             }
3844             setLayersOpaque(this, false);
3845         } else if ((oldAlpha < 255) && (alpha == 255)) {
3846             setLayersOpaque(this, true);
3847         }
3848         WindowPeer peer = (WindowPeer)getPeer();
3849         if (peer != null) {
3850             peer.setOpaque(alpha == 255);
3851         }
3852     }
3853 
3854     /**
3855      * Indicates if the window is currently opaque.
3856      * <p>
3857      * The method returns {@code false} if the background color of the window
3858      * is not {@code null} and the alpha component of the color is less than
3859      * {@code 1.0f}. The method returns {@code true} otherwise.
3860      *
3861      * @return {@code true} if the window is opaque, {@code false} otherwise
3862      *
3863      * @see Window#getBackground
3864      * @see Window#setBackground(Color)
3865      * @since 1.7
3866      */
3867     @Override
3868     public boolean isOpaque() {
3869         Color bg = getBackground();
3870         return bg != null ? bg.getAlpha() == 255 : true;
3871     }
3872 
3873     private void updateWindow() {
3874         synchronized (getTreeLock()) {
3875             WindowPeer peer = (WindowPeer)getPeer();
3876             if (peer != null) {
3877                 peer.updateWindow();
3878             }
3879         }
3880     }
3881 
3882     /**
3883      * {@inheritDoc}
3884      *
3885      * @since 1.7
3886      */
3887     @Override
3888     public void paint(Graphics g) {
3889         if (!isOpaque()) {
3890             Graphics gg = g.create();
3891             try {
3892                 if (gg instanceof Graphics2D) {
3893                     gg.setColor(getBackground());
3894                     ((Graphics2D)gg).setComposite(AlphaComposite.getInstance(AlphaComposite.SRC));
3895                     gg.fillRect(0, 0, getWidth(), getHeight());
3896                 }
3897             } finally {
3898                 gg.dispose();
3899             }
3900         }
3901         super.paint(g);
3902     }
3903 
3904     private static void setLayersOpaque(Component component, boolean isOpaque) {
3905         // Shouldn't use instanceof to avoid loading Swing classes
3906         //    if it's a pure AWT application.
3907         if (SunToolkit.isInstanceOf(component, "javax.swing.RootPaneContainer")) {
3908             javax.swing.RootPaneContainer rpc = (javax.swing.RootPaneContainer)component;
3909             javax.swing.JRootPane root = rpc.getRootPane();
3910             javax.swing.JLayeredPane lp = root.getLayeredPane();
3911             Container c = root.getContentPane();
3912             javax.swing.JComponent content =
3913                 (c instanceof javax.swing.JComponent) ? (javax.swing.JComponent)c : null;
3914             lp.setOpaque(isOpaque);
3915             root.setOpaque(isOpaque);
3916             if (content != null) {
3917                 content.setOpaque(isOpaque);
3918 
3919                 // Iterate down one level to see whether we have a JApplet
3920                 // (which is also a RootPaneContainer) which requires processing
3921                 int numChildren = content.getComponentCount();
3922                 if (numChildren > 0) {
3923                     Component child = content.getComponent(0);
3924                     // It's OK to use instanceof here because we've
3925                     // already loaded the RootPaneContainer class by now
3926                     if (child instanceof javax.swing.RootPaneContainer) {
3927                         setLayersOpaque(child, isOpaque);
3928                     }
3929                 }
3930             }
3931         }
3932     }
3933 
3934 
3935     // ************************** MIXING CODE *******************************
3936 
3937     // A window has an owner, but it does NOT have a container
3938     @Override
3939     final Container getContainer() {
3940         return null;
3941     }
3942 
3943     /**
3944      * Applies the shape to the component
3945      * @param shape Shape to be applied to the component
3946      */
3947     @Override
3948     final void applyCompoundShape(Region shape) {
3949         // The shape calculated by mixing code is not intended to be applied
3950         // to windows or frames
3951     }
3952 
3953     @Override
3954     final void applyCurrentShape() {
3955         // The shape calculated by mixing code is not intended to be applied
3956         // to windows or frames
3957     }
3958 
3959     @Override
3960     final void mixOnReshaping() {
3961         // The shape calculated by mixing code is not intended to be applied
3962         // to windows or frames
3963     }
3964 
3965     @Override
3966     final Point getLocationOnWindow() {
3967         return new Point(0, 0);
3968     }
3969 
3970     // ****************** END OF MIXING CODE ********************************
3971 
3972     /**
3973      * Limit the given double value with the given range.
3974      */
3975     private static double limit(double value, double min, double max) {
3976         value = Math.max(value, min);
3977         value = Math.min(value, max);
3978         return value;
3979     }
3980 
3981     /**
3982      * Calculate the position of the security warning.
3983      *
3984      * This method gets the window location/size as reported by the native
3985      * system since the locally cached values may represent outdated data.
3986      *
3987      * The method is used from the native code, or via AWTAccessor.
3988      *
3989      * NOTE: this method is invoked on the toolkit thread, and therefore is not
3990      * supposed to become public/user-overridable.
3991      */
3992     private Point2D calculateSecurityWarningPosition(double x, double y,
3993             double w, double h)
3994     {
3995         // The position according to the spec of SecurityWarning.setPosition()
3996         double wx = x + w * securityWarningAlignmentX + securityWarningPointX;
3997         double wy = y + h * securityWarningAlignmentY + securityWarningPointY;
3998 
3999         // First, make sure the warning is not too far from the window bounds
4000         wx = Window.limit(wx,
4001                 x - securityWarningWidth - 2,
4002                 x + w + 2);
4003         wy = Window.limit(wy,
4004                 y - securityWarningHeight - 2,
4005                 y + h + 2);
4006 
4007         // Now make sure the warning window is visible on the screen
4008         GraphicsConfiguration graphicsConfig =
4009             getGraphicsConfiguration_NoClientCode();
4010         Rectangle screenBounds = graphicsConfig.getBounds();
4011         Insets screenInsets =
4012             Toolkit.getDefaultToolkit().getScreenInsets(graphicsConfig);
4013 
4014         wx = Window.limit(wx,
4015                 screenBounds.x + screenInsets.left,
4016                 screenBounds.x + screenBounds.width - screenInsets.right
4017                 - securityWarningWidth);
4018         wy = Window.limit(wy,
4019                 screenBounds.y + screenInsets.top,
4020                 screenBounds.y + screenBounds.height - screenInsets.bottom
4021                 - securityWarningHeight);
4022 
4023         return new Point2D.Double(wx, wy);
4024     }
4025 
4026     static {
4027         AWTAccessor.setWindowAccessor(new AWTAccessor.WindowAccessor() {
4028             public float getOpacity(Window window) {
4029                 return window.opacity;
4030             }
4031             public void setOpacity(Window window, float opacity) {
4032                 window.setOpacity(opacity);
4033             }
4034             public Shape getShape(Window window) {
4035                 return window.getShape();
4036             }
4037             public void setShape(Window window, Shape shape) {
4038                 window.setShape(shape);
4039             }
4040             public void setOpaque(Window window, boolean opaque) {
4041                 Color bg = window.getBackground();
4042                 if (bg == null) {
4043                     bg = new Color(0, 0, 0, 0);
4044                 }
4045                 window.setBackground(new Color(bg.getRed(), bg.getGreen(), bg.getBlue(),
4046                                                opaque ? 255 : 0));
4047             }
4048             public void updateWindow(Window window) {
4049                 window.updateWindow();
4050             }
4051 
4052             public Dimension getSecurityWarningSize(Window window) {
4053                 return new Dimension(window.securityWarningWidth,
4054                         window.securityWarningHeight);
4055             }
4056 
4057             public void setSecurityWarningSize(Window window, int width, int height)
4058             {
4059                 window.securityWarningWidth = width;
4060                 window.securityWarningHeight = height;
4061             }
4062 
4063             public void setSecurityWarningPosition(Window window,
4064                     Point2D point, float alignmentX, float alignmentY)
4065             {
4066                 window.securityWarningPointX = point.getX();
4067                 window.securityWarningPointY = point.getY();
4068                 window.securityWarningAlignmentX = alignmentX;
4069                 window.securityWarningAlignmentY = alignmentY;
4070 
4071                 synchronized (window.getTreeLock()) {
4072                     WindowPeer peer = (WindowPeer)window.getPeer();
4073                     if (peer != null) {
4074                         peer.repositionSecurityWarning();
4075                     }
4076                 }
4077             }
4078 
4079             public Point2D calculateSecurityWarningPosition(Window window,
4080                     double x, double y, double w, double h)
4081             {
4082                 return window.calculateSecurityWarningPosition(x, y, w, h);
4083             }
4084 
4085             public void setLWRequestStatus(Window changed, boolean status) {
4086                 changed.syncLWRequests = status;
4087             }
4088 
4089             public boolean isAutoRequestFocus(Window w) {
4090                 return w.autoRequestFocus;
4091             }
4092 
4093             public boolean isTrayIconWindow(Window w) {
4094                 return w.isTrayIconWindow;
4095             }
4096 
4097             public void setTrayIconWindow(Window w, boolean isTrayIconWindow) {
4098                 w.isTrayIconWindow = isTrayIconWindow;
4099             }
4100         }); // WindowAccessor
4101     } // static
4102 
4103     // a window doesn't need to be updated in the Z-order.
4104     @Override
4105     void updateZOrder() {}
4106 
4107 } // class Window
4108 
4109 
4110 /**
4111  * This class is no longer used, but is maintained for Serialization
4112  * backward-compatibility.
4113  */
4114 class FocusManager implements java.io.Serializable {
4115     Container focusRoot;
4116     Component focusOwner;
4117 
4118     /*
4119      * JDK 1.1 serialVersionUID
4120      */
4121     static final long serialVersionUID = 2491878825643557906L;
4122 }