1 /*
   2  * Copyright (c) 1995, 2011, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 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</code> object is a top-level window with no borders and no
  66  * menubar.
  67  * The default layout for a window is <code>BorderLayout</code>.
  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</code>
  73  * on a different screen device by constructing the <code>Window</code>
  74  * with {@link #Window(Window, GraphicsConfiguration)}.  The
  75  * <code>GraphicsConfiguration</code> object is one of the
  76  * <code>GraphicsConfiguration</code> 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  * ALIGN=center HSPACE=10 VSPACE=7>
  89  * <p>
  90  * In such an environment, when calling <code>setLocation</code>,
  91  * you must pass a virtual coordinate to this method.  Similarly,
  92  * calling <code>getLocationOnScreen</code> on a <code>Window</code> returns
  93  * virtual device coordinates.  Call the <code>getBounds</code> method
  94  * of a <code>GraphicsConfiguration</code> to find its origin in the virtual
  95  * coordinate system.
  96  * <p>
  97  * The following code sets the location of a <code>Window</code>
  98  * at (10, 10) relative to the origin of the physical screen
  99  * of the corresponding <code>GraphicsConfiguration</code>.  If the
 100  * bounds of the <code>GraphicsConfiguration</code> is not taken
 101  * into account, the <code>Window</code> 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</code>.
 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</code>s, <code>Frame</code>s, and <code>Dialog</code>s)
 115  * are under the control of the desktop's window management system.
 116  * Calls to <code>setLocation</code>, <code>setSize</code>, and
 117  * <code>setBounds</code> 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</code> 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>, <code>getLocation</code>,
 126  * <code>getLocationOnScreen</code>, and <code>getSize</code> 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 for
 199      * which calling SecurityManager.checkTopLevelWindow()
 200      * is false.  This message can be displayed anywhere in
 201      * the window.
 202      *
 203      * @serial
 204      * @see #getWarningString
 205      */
 206     String      warningString;
 207 
 208     /**
 209      * {@code icons} is the graphical way we can
 210      * represent the frames and dialogs.
 211      * {@code Window} can't display icon but it's
 212      * being inherited by owned {@code Dialog}s.
 213      *
 214      * @serial
 215      * @see #getIconImages
 216      * @see #setIconImages(List<? extends Image>)
 217      */
 218     transient java.util.List<Image> icons;
 219 
 220     /**
 221      * Holds the reference to the component which last had focus in this window
 222      * before it lost focus.
 223      */
 224     private transient Component temporaryLostComponent;
 225 
 226     static boolean systemSyncLWRequests = false;
 227     boolean     syncLWRequests = false;
 228     transient boolean beforeFirstShow = true;
 229     private transient boolean disposing = false;
 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</code>.
 419      * <p>
 420      * If there is a security manager, this method first calls
 421      * the security manager's <code>checkTopLevelWindow</code>
 422      * method with <code>this</code>
 423      * as its argument to determine whether or not the window
 424      * must be displayed with a warning banner.
 425      *
 426      * @param gc the <code>GraphicsConfiguration</code> of the target screen
 427      *     device. If <code>gc</code> is <code>null</code>, the system default
 428      *     <code>GraphicsConfiguration</code> is assumed
 429      * @exception IllegalArgumentException if <code>gc</code>
 430      *    is not from a screen device
 431      * @exception HeadlessException when
 432      *     <code>GraphicsEnvironment.isHeadless()</code> returns <code>true</code>
 433      *
 434      * @see java.awt.GraphicsEnvironment#isHeadless
 435      * @see java.lang.SecurityManager#checkTopLevelWindow
 436      */
 437     Window(GraphicsConfiguration gc) {
 438         init(gc);
 439     }
 440 
 441     transient Object anchor = new Object();
 442     static class WindowDisposerRecord implements sun.java2d.DisposerRecord {
 443         final WeakReference<Window> owner;
 444         final WeakReference weakThis;
 445         final WeakReference<AppContext> context;
 446         WindowDisposerRecord(AppContext context, Window victim) {
 447             owner = new WeakReference<Window>(victim.getOwner());
 448             weakThis = victim.weakThis;
 449             this.context = new WeakReference<AppContext>(context);
 450         }
 451         public void dispose() {
 452             Window parent = owner.get();
 453             if (parent != null) {
 454                 parent.removeOwnedWindow(weakThis);
 455             }
 456             AppContext ac = context.get();
 457             if (null != ac) {
 458                 Window.removeFromWindowList(ac, weakThis);
 459             }
 460         }
 461     }
 462 
 463     private GraphicsConfiguration initGC(GraphicsConfiguration gc) {
 464         GraphicsEnvironment.checkHeadless();
 465 
 466         if (gc == null) {
 467             gc = GraphicsEnvironment.getLocalGraphicsEnvironment().
 468                 getDefaultScreenDevice().getDefaultConfiguration();
 469         }
 470         setGraphicsConfiguration(gc);
 471 
 472         return gc;
 473     }
 474 
 475     private void init(GraphicsConfiguration gc) {
 476         GraphicsEnvironment.checkHeadless();
 477 
 478         syncLWRequests = systemSyncLWRequests;
 479 
 480         weakThis = new WeakReference<Window>(this);
 481         addToWindowList();
 482 
 483         setWarningString();
 484         this.cursor = Cursor.getPredefinedCursor(Cursor.DEFAULT_CURSOR);
 485         this.visible = false;
 486 
 487         gc = initGC(gc);
 488 
 489         if (gc.getDevice().getType() !=
 490             GraphicsDevice.TYPE_RASTER_SCREEN) {
 491             throw new IllegalArgumentException("not a screen device");
 492         }
 493         setLayout(new BorderLayout());
 494 
 495         /* offset the initial location with the original of the screen */
 496         /* and any insets                                              */
 497         Rectangle screenBounds = gc.getBounds();
 498         Insets screenInsets = getToolkit().getScreenInsets(gc);
 499         int x = getX() + screenBounds.x + screenInsets.left;
 500         int y = getY() + screenBounds.y + screenInsets.top;
 501         if (x != this.x || y != this.y) {
 502             setLocation(x, y);
 503             /* reset after setLocation */
 504             setLocationByPlatform(locationByPlatformProp);
 505         }
 506 
 507         modalExclusionType = Dialog.ModalExclusionType.NO_EXCLUDE;
 508 
 509         SunToolkit.checkAndSetPolicy(this);
 510     }
 511 
 512     /**
 513      * Constructs a new, initially invisible window in the default size.
 514      *
 515      * <p>First, if there is a security manager, its
 516      * <code>checkTopLevelWindow</code>
 517      * method is called with <code>this</code>
 518      * as its argument
 519      * to see if it's ok to display the window without a warning banner.
 520      * If the default implementation of <code>checkTopLevelWindow</code>
 521      * is used (that is, that method is not overriden), then this results in
 522      * a call to the security manager's <code>checkPermission</code> method
 523      * with an <code>AWTPermission("showWindowWithoutWarningBanner")</code>
 524      * permission. It that method raises a SecurityException,
 525      * <code>checkTopLevelWindow</code> returns false, otherwise it
 526      * returns true. If it returns false, a warning banner is created.
 527      *
 528      * @exception HeadlessException when
 529      *     <code>GraphicsEnvironment.isHeadless()</code> returns <code>true</code>
 530      *
 531      * @see java.awt.GraphicsEnvironment#isHeadless
 532      * @see java.lang.SecurityManager#checkTopLevelWindow
 533      */
 534     Window() throws HeadlessException {
 535         GraphicsEnvironment.checkHeadless();
 536         init((GraphicsConfiguration)null);
 537     }
 538 
 539     /**
 540      * Constructs a new, initially invisible window with the specified
 541      * <code>Frame</code> as its owner. The window will not be focusable
 542      * unless its owner is showing on the screen.
 543      * <p>
 544      * If there is a security manager, this method first calls
 545      * the security manager's <code>checkTopLevelWindow</code>
 546      * method with <code>this</code>
 547      * as its argument to determine whether or not the window
 548      * must be displayed with a warning banner.
 549      *
 550      * @param owner the <code>Frame</code> to act as owner or <code>null</code>
 551      *    if this window has no owner
 552      * @exception IllegalArgumentException if the <code>owner</code>'s
 553      *    <code>GraphicsConfiguration</code> is not from a screen device
 554      * @exception HeadlessException when
 555      *    <code>GraphicsEnvironment.isHeadless</code> returns <code>true</code>
 556      *
 557      * @see java.awt.GraphicsEnvironment#isHeadless
 558      * @see java.lang.SecurityManager#checkTopLevelWindow
 559      * @see #isShowing
 560      */
 561     public Window(Frame owner) {
 562         this(owner == null ? (GraphicsConfiguration)null :
 563             owner.getGraphicsConfiguration());
 564         ownedInit(owner);
 565     }
 566 
 567     /**
 568      * Constructs a new, initially invisible window with the specified
 569      * <code>Window</code> as its owner. This window will not be focusable
 570      * unless its nearest owning <code>Frame</code> or <code>Dialog</code>
 571      * is showing on the screen.
 572      * <p>
 573      * If there is a security manager, this method first calls
 574      * the security manager's <code>checkTopLevelWindow</code>
 575      * method with <code>this</code>
 576      * as its argument to determine whether or not the window
 577      * must be displayed with a warning banner.
 578      *
 579      * @param owner the <code>Window</code> to act as owner or
 580      *     <code>null</code> if this window has no owner
 581      * @exception IllegalArgumentException if the <code>owner</code>'s
 582      *     <code>GraphicsConfiguration</code> is not from a screen device
 583      * @exception HeadlessException when
 584      *     <code>GraphicsEnvironment.isHeadless()</code> returns
 585      *     <code>true</code>
 586      *
 587      * @see       java.awt.GraphicsEnvironment#isHeadless
 588      * @see       java.lang.SecurityManager#checkTopLevelWindow
 589      * @see       #isShowing
 590      *
 591      * @since     1.2
 592      */
 593     public Window(Window owner) {
 594         this(owner == null ? (GraphicsConfiguration)null :
 595             owner.getGraphicsConfiguration());
 596         ownedInit(owner);
 597     }
 598 
 599     /**
 600      * Constructs a new, initially invisible window with the specified owner
 601      * <code>Window</code> and a <code>GraphicsConfiguration</code>
 602      * of a screen device. The Window will not be focusable unless
 603      * its nearest owning <code>Frame</code> or <code>Dialog</code>
 604      * is showing on the screen.
 605      * <p>
 606      * If there is a security manager, this method first calls
 607      * the security manager's <code>checkTopLevelWindow</code>
 608      * method with <code>this</code>
 609      * as its argument to determine whether or not the window
 610      * must be displayed with a warning banner.
 611      *
 612      * @param owner the window to act as owner or <code>null</code>
 613      *     if this window has no owner
 614      * @param gc the <code>GraphicsConfiguration</code> of the target
 615      *     screen device; if <code>gc</code> is <code>null</code>,
 616      *     the system default <code>GraphicsConfiguration</code> is assumed
 617      * @exception IllegalArgumentException if <code>gc</code>
 618      *     is not from a screen device
 619      * @exception HeadlessException when
 620      *     <code>GraphicsEnvironment.isHeadless()</code> returns
 621      *     <code>true</code>
 622      *
 623      * @see       java.awt.GraphicsEnvironment#isHeadless
 624      * @see       java.lang.SecurityManager#checkTopLevelWindow
 625      * @see       GraphicsConfiguration#getBounds
 626      * @see       #isShowing
 627      * @since     1.3
 628      */
 629     public Window(Window owner, GraphicsConfiguration gc) {
 630         this(gc);
 631         ownedInit(owner);
 632     }
 633 
 634     private void ownedInit(Window owner) {
 635         this.parent = owner;
 636         if (owner != null) {
 637             owner.addOwnedWindow(weakThis);
 638         }
 639 
 640         // Fix for 6758673: this call is moved here from init(gc), because
 641         // WindowDisposerRecord requires a proper value of parent field.
 642         Disposer.addRecord(anchor, new WindowDisposerRecord(appContext, this));
 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)</code>.
 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             locationByPlatform = false;
1044             for (int i = 0; i < ownedWindowList.size(); i++) {
1045                 Window child = ownedWindowList.elementAt(i).get();
1046                 if ((child != null) && child.showWithParent) {
1047                     child.show();
1048                     child.showWithParent = false;
1049                 }       // endif
1050             }   // endfor
1051             if (!isModalBlocked()) {
1052                 updateChildrenBlocking();
1053             } else {
1054                 // fix for 6532736: after this window is shown, its blocker
1055                 // should be raised to front
1056                 modalBlocker.toFront_NoClientCode();
1057             }
1058             if (this instanceof Frame || this instanceof Dialog) {
1059                 updateChildFocusableWindowState(this);
1060             }
1061         }
1062         isInShow = false;
1063 
1064         // If first time shown, generate WindowOpened event
1065         if ((state & OPENED) == 0) {
1066             postWindowEvent(WindowEvent.WINDOW_OPENED);
1067             state |= OPENED;
1068         }
1069     }
1070 
1071     static void updateChildFocusableWindowState(Window w) {
1072         if (w.getPeer() != null && w.isShowing()) {
1073             ((WindowPeer)w.getPeer()).updateFocusableWindowState();
1074         }
1075         for (int i = 0; i < w.ownedWindowList.size(); i++) {
1076             Window child = w.ownedWindowList.elementAt(i).get();
1077             if (child != null) {
1078                 updateChildFocusableWindowState(child);
1079             }
1080         }
1081     }
1082 
1083     synchronized void postWindowEvent(int id) {
1084         if (windowListener != null
1085             || (eventMask & AWTEvent.WINDOW_EVENT_MASK) != 0
1086             ||  Toolkit.enabledOnToolkit(AWTEvent.WINDOW_EVENT_MASK)) {
1087             WindowEvent e = new WindowEvent(this, id);
1088             Toolkit.getEventQueue().postEvent(e);
1089         }
1090     }
1091 
1092     /**
1093      * Hide this Window, its subcomponents, and all of its owned children.
1094      * The Window and its subcomponents can be made visible again
1095      * with a call to {@code show}.
1096      * </p>
1097      * @see #show
1098      * @see #dispose
1099      * @deprecated As of JDK version 1.5, replaced by
1100      * {@link #setVisible(boolean)}.
1101      */
1102     @Deprecated
1103     public void hide() {
1104         synchronized(ownedWindowList) {
1105             for (int i = 0; i < ownedWindowList.size(); i++) {
1106                 Window child = ownedWindowList.elementAt(i).get();
1107                 if ((child != null) && child.visible) {
1108                     child.hide();
1109                     child.showWithParent = true;
1110                 }
1111             }
1112         }
1113         if (isModalBlocked()) {
1114             modalBlocker.unblockWindow(this);
1115         }
1116         super.hide();
1117     }
1118 
1119     final void clearMostRecentFocusOwnerOnHide() {
1120         /* do nothing */
1121     }
1122 
1123     /**
1124      * Releases all of the native screen resources used by this
1125      * <code>Window</code>, its subcomponents, and all of its owned
1126      * children. That is, the resources for these <code>Component</code>s
1127      * will be destroyed, any memory they consume will be returned to the
1128      * OS, and they will be marked as undisplayable.
1129      * <p>
1130      * The <code>Window</code> and its subcomponents can be made displayable
1131      * again by rebuilding the native resources with a subsequent call to
1132      * <code>pack</code> or <code>show</code>. The states of the recreated
1133      * <code>Window</code> and its subcomponents will be identical to the
1134      * states of these objects at the point where the <code>Window</code>
1135      * was disposed (not accounting for additional modifications between
1136      * those actions).
1137      * <p>
1138      * <b>Note</b>: When the last displayable window
1139      * within the Java virtual machine (VM) is disposed of, the VM may
1140      * terminate.  See <a href="doc-files/AWTThreadIssues.html#Autoshutdown">
1141      * AWT Threading Issues</a> for more information.
1142      * @see Component#isDisplayable
1143      * @see #pack
1144      * @see #show
1145      */
1146     public void dispose() {
1147         doDispose();
1148     }
1149 
1150     /*
1151      * Fix for 4872170.
1152      * If dispose() is called on parent then its children have to be disposed as well
1153      * as reported in javadoc. So we need to implement this functionality even if a
1154      * child overrides dispose() in a wrong way without calling super.dispose().
1155      */
1156     void disposeImpl() {
1157         dispose();
1158         if (getPeer() != null) {
1159             doDispose();
1160         }
1161     }
1162 
1163     void doDispose() {
1164     class DisposeAction implements Runnable {
1165         public void run() {
1166             disposing = true;
1167             try {
1168                 // Check if this window is the fullscreen window for the
1169                 // device. Exit the fullscreen mode prior to disposing
1170                 // of the window if that's the case.
1171                 GraphicsDevice gd = getGraphicsConfiguration().getDevice();
1172                 if (gd.getFullScreenWindow() == Window.this) {
1173                     gd.setFullScreenWindow(null);
1174                 }
1175 
1176                 Object[] ownedWindowArray;
1177                 synchronized(ownedWindowList) {
1178                     ownedWindowArray = new Object[ownedWindowList.size()];
1179                     ownedWindowList.copyInto(ownedWindowArray);
1180                 }
1181                 for (int i = 0; i < ownedWindowArray.length; i++) {
1182                     Window child = (Window) (((WeakReference)
1183                                    (ownedWindowArray[i])).get());
1184                     if (child != null) {
1185                         child.disposeImpl();
1186                     }
1187                 }
1188                 hide();
1189                 beforeFirstShow = true;
1190                 removeNotify();
1191                 synchronized (inputContextLock) {
1192                     if (inputContext != null) {
1193                         inputContext.dispose();
1194                         inputContext = null;
1195                     }
1196                 }
1197                 clearCurrentFocusCycleRootOnHide();
1198             } finally {
1199                 disposing = false;
1200             }
1201         }
1202     }
1203         DisposeAction action = new DisposeAction();
1204         if (EventQueue.isDispatchThread()) {
1205             action.run();
1206         }
1207         else {
1208             try {
1209                 EventQueue.invokeAndWait(action);
1210             }
1211             catch (InterruptedException e) {
1212                 System.err.println("Disposal was interrupted:");
1213                 e.printStackTrace();
1214             }
1215             catch (InvocationTargetException e) {
1216                 System.err.println("Exception during disposal:");
1217                 e.printStackTrace();
1218             }
1219         }
1220         // Execute outside the Runnable because postWindowEvent is
1221         // synchronized on (this). We don't need to synchronize the call
1222         // on the EventQueue anyways.
1223         postWindowEvent(WindowEvent.WINDOW_CLOSED);
1224     }
1225 
1226     /*
1227      * Should only be called while holding the tree lock.
1228      * It's overridden here because parent == owner in Window,
1229      * and we shouldn't adjust counter on owner
1230      */
1231     void adjustListeningChildrenOnParent(long mask, int num) {
1232     }
1233 
1234     // Should only be called while holding tree lock
1235     void adjustDecendantsOnParent(int num) {
1236         // do nothing since parent == owner and we shouldn't
1237         // ajust counter on owner
1238     }
1239 
1240     /**
1241      * If this Window is visible, brings this Window to the front and may make
1242      * it the focused Window.
1243      * <p>
1244      * Places this Window at the top of the stacking order and shows it in
1245      * front of any other Windows in this VM. No action will take place if this
1246      * Window is not visible. Some platforms do not allow Windows which own
1247      * other Windows to appear on top of those owned Windows. Some platforms
1248      * may not permit this VM to place its Windows above windows of native
1249      * applications, or Windows of other VMs. This permission may depend on
1250      * whether a Window in this VM is already focused. Every attempt will be
1251      * made to move this Window as high as possible in the stacking order;
1252      * however, developers should not assume that this method will move this
1253      * Window above all other windows in every situation.
1254      * <p>
1255      * Developers must never assume that this Window is the focused or active
1256      * Window until this Window receives a WINDOW_GAINED_FOCUS or WINDOW_ACTIVATED
1257      * event. On platforms where the top-most window is the focused window, this
1258      * method will <b>probably</b> focus this Window (if it is not already focused)
1259      * under the following conditions:
1260      * <ul>
1261      * <li> The window meets the requirements outlined in the
1262      *      {@link #isFocusableWindow} method.
1263      * <li> The window's property {@code autoRequestFocus} is of the
1264      *      {@code true} value.
1265      * <li> Native windowing system allows the window to get focused.
1266      * </ul>
1267      * On platforms where the stacking order does not typically affect the focused
1268      * window, this method will <b>probably</b> leave the focused and active
1269      * Windows unchanged.
1270      * <p>
1271      * If this method causes this Window to be focused, and this Window is a
1272      * Frame or a Dialog, it will also become activated. If this Window is
1273      * focused, but it is not a Frame or a Dialog, then the first Frame or
1274      * Dialog that is an owner of this Window will be activated.
1275      * <p>
1276      * If this window is blocked by modal dialog, then the blocking dialog
1277      * is brought to the front and remains above the blocked window.
1278      *
1279      * @see       #toBack
1280      * @see       #setAutoRequestFocus
1281      * @see       #isFocusableWindow
1282      */
1283     public void toFront() {
1284         toFront_NoClientCode();
1285     }
1286 
1287     // This functionality is implemented in a final package-private method
1288     // to insure that it cannot be overridden by client subclasses.
1289     final void toFront_NoClientCode() {
1290         if (visible) {
1291             WindowPeer peer = (WindowPeer)this.peer;
1292             if (peer != null) {
1293                 peer.toFront();
1294             }
1295             if (isModalBlocked()) {
1296                 modalBlocker.toFront_NoClientCode();
1297             }
1298         }
1299     }
1300 
1301     /**
1302      * If this Window is visible, sends this Window to the back and may cause
1303      * it to lose focus or activation if it is the focused or active Window.
1304      * <p>
1305      * Places this Window at the bottom of the stacking order and shows it
1306      * behind any other Windows in this VM. No action will take place is this
1307      * Window is not visible. Some platforms do not allow Windows which are
1308      * owned by other Windows to appear below their owners. Every attempt will
1309      * be made to move this Window as low as possible in the stacking order;
1310      * however, developers should not assume that this method will move this
1311      * Window below all other windows in every situation.
1312      * <p>
1313      * Because of variations in native windowing systems, no guarantees about
1314      * changes to the focused and active Windows can be made. Developers must
1315      * never assume that this Window is no longer the focused or active Window
1316      * until this Window receives a WINDOW_LOST_FOCUS or WINDOW_DEACTIVATED
1317      * event. On platforms where the top-most window is the focused window,
1318      * this method will <b>probably</b> cause this Window to lose focus. In
1319      * that case, the next highest, focusable Window in this VM will receive
1320      * focus. On platforms where the stacking order does not typically affect
1321      * the focused window, this method will <b>probably</b> leave the focused
1322      * and active Windows unchanged.
1323      *
1324      * @see       #toFront
1325      */
1326     public void toBack() {
1327         toBack_NoClientCode();
1328     }
1329 
1330     // This functionality is implemented in a final package-private method
1331     // to insure that it cannot be overridden by client subclasses.
1332     final void toBack_NoClientCode() {
1333         if(isAlwaysOnTop()) {
1334             try {
1335                 setAlwaysOnTop(false);
1336             }catch(SecurityException e) {
1337             }
1338         }
1339         if (visible) {
1340             WindowPeer peer = (WindowPeer)this.peer;
1341             if (peer != null) {
1342                 peer.toBack();
1343             }
1344         }
1345     }
1346 
1347     /**
1348      * Returns the toolkit of this frame.
1349      * @return    the toolkit of this window.
1350      * @see       Toolkit
1351      * @see       Toolkit#getDefaultToolkit
1352      * @see       Component#getToolkit
1353      */
1354     public Toolkit getToolkit() {
1355         return Toolkit.getDefaultToolkit();
1356     }
1357 
1358     /**
1359      * Gets the warning string that is displayed with this window.
1360      * If this window is insecure, the warning string is displayed
1361      * somewhere in the visible area of the window. A window is
1362      * insecure if there is a security manager, and the security
1363      * manager's <code>checkTopLevelWindow</code> method returns
1364      * <code>false</code> when this window is passed to it as an
1365      * argument.
1366      * <p>
1367      * If the window is secure, then <code>getWarningString</code>
1368      * returns <code>null</code>. If the window is insecure, this
1369      * method checks for the system property
1370      * <code>awt.appletWarning</code>
1371      * and returns the string value of that property.
1372      * @return    the warning string for this window.
1373      * @see       java.lang.SecurityManager#checkTopLevelWindow(java.lang.Object)
1374      */
1375     public final String getWarningString() {
1376         return warningString;
1377     }
1378 
1379     private void setWarningString() {
1380         warningString = null;
1381         SecurityManager sm = System.getSecurityManager();
1382         if (sm != null) {
1383             if (!sm.checkTopLevelWindow(this)) {
1384                 // make sure the privileged action is only
1385                 // for getting the property! We don't want the
1386                 // above checkTopLevelWindow call to always succeed!
1387                 warningString = AccessController.doPrivileged(
1388                       new GetPropertyAction("awt.appletWarning",
1389                                             "Java Applet Window"));
1390             }
1391         }
1392     }
1393 
1394     /**
1395      * Gets the <code>Locale</code> object that is associated
1396      * with this window, if the locale has been set.
1397      * If no locale has been set, then the default locale
1398      * is returned.
1399      * @return    the locale that is set for this window.
1400      * @see       java.util.Locale
1401      * @since     JDK1.1
1402      */
1403     public Locale getLocale() {
1404       if (this.locale == null) {
1405         return Locale.getDefault();
1406       }
1407       return this.locale;
1408     }
1409 
1410     /**
1411      * Gets the input context for this window. A window always has an input context,
1412      * which is shared by subcomponents unless they create and set their own.
1413      * @see Component#getInputContext
1414      * @since 1.2
1415      */
1416     public InputContext getInputContext() {
1417         synchronized (inputContextLock) {
1418             if (inputContext == null) {
1419                 inputContext = InputContext.getInstance();
1420             }
1421         }
1422         return inputContext;
1423     }
1424 
1425     /**
1426      * Set the cursor image to a specified cursor.
1427      * <p>
1428      * The method may have no visual effect if the Java platform
1429      * implementation and/or the native system do not support
1430      * changing the mouse cursor shape.
1431      * @param     cursor One of the constants defined
1432      *            by the <code>Cursor</code> class. If this parameter is null
1433      *            then the cursor for this window will be set to the type
1434      *            Cursor.DEFAULT_CURSOR.
1435      * @see       Component#getCursor
1436      * @see       Cursor
1437      * @since     JDK1.1
1438      */
1439     public void setCursor(Cursor cursor) {
1440         if (cursor == null) {
1441             cursor = Cursor.getPredefinedCursor(Cursor.DEFAULT_CURSOR);
1442         }
1443         super.setCursor(cursor);
1444     }
1445 
1446     /**
1447      * Returns the owner of this window.
1448      * @since 1.2
1449      */
1450     public Window getOwner() {
1451         return getOwner_NoClientCode();
1452     }
1453     final Window getOwner_NoClientCode() {
1454         return (Window)parent;
1455     }
1456 
1457     /**
1458      * Return an array containing all the windows this
1459      * window currently owns.
1460      * @since 1.2
1461      */
1462     public Window[] getOwnedWindows() {
1463         return getOwnedWindows_NoClientCode();
1464     }
1465     final Window[] getOwnedWindows_NoClientCode() {
1466         Window realCopy[];
1467 
1468         synchronized(ownedWindowList) {
1469             // Recall that ownedWindowList is actually a Vector of
1470             // WeakReferences and calling get() on one of these references
1471             // may return null. Make two arrays-- one the size of the
1472             // Vector (fullCopy with size fullSize), and one the size of
1473             // all non-null get()s (realCopy with size realSize).
1474             int fullSize = ownedWindowList.size();
1475             int realSize = 0;
1476             Window fullCopy[] = new Window[fullSize];
1477 
1478             for (int i = 0; i < fullSize; i++) {
1479                 fullCopy[realSize] = ownedWindowList.elementAt(i).get();
1480 
1481                 if (fullCopy[realSize] != null) {
1482                     realSize++;
1483                 }
1484             }
1485 
1486             if (fullSize != realSize) {
1487                 realCopy = Arrays.copyOf(fullCopy, realSize);
1488             } else {
1489                 realCopy = fullCopy;
1490             }
1491         }
1492 
1493         return realCopy;
1494     }
1495 
1496     boolean isModalBlocked() {
1497         return modalBlocker != null;
1498     }
1499 
1500     void setModalBlocked(Dialog blocker, boolean blocked, boolean peerCall) {
1501         this.modalBlocker = blocked ? blocker : null;
1502         if (peerCall) {
1503             WindowPeer peer = (WindowPeer)this.peer;
1504             if (peer != null) {
1505                 peer.setModalBlocked(blocker, blocked);
1506             }
1507         }
1508     }
1509 
1510     Dialog getModalBlocker() {
1511         return modalBlocker;
1512     }
1513 
1514     /*
1515      * Returns a list of all displayable Windows, i. e. all the
1516      * Windows which peer is not null.
1517      *
1518      * @see #addNotify
1519      * @see #removeNotify
1520      */
1521     static IdentityArrayList<Window> getAllWindows() {
1522         synchronized (allWindows) {
1523             IdentityArrayList<Window> v = new IdentityArrayList<Window>();
1524             v.addAll(allWindows);
1525             return v;
1526         }
1527     }
1528 
1529     static IdentityArrayList<Window> getAllUnblockedWindows() {
1530         synchronized (allWindows) {
1531             IdentityArrayList<Window> unblocked = new IdentityArrayList<Window>();
1532             for (int i = 0; i < allWindows.size(); i++) {
1533                 Window w = allWindows.get(i);
1534                 if (!w.isModalBlocked()) {
1535                     unblocked.add(w);
1536                 }
1537             }
1538             return unblocked;
1539         }
1540     }
1541 
1542     private static Window[] getWindows(AppContext appContext) {
1543         synchronized (Window.class) {
1544             Window realCopy[];
1545             Vector<WeakReference<Window>> windowList =
1546                 (Vector<WeakReference<Window>>)appContext.get(Window.class);
1547             if (windowList != null) {
1548                 int fullSize = windowList.size();
1549                 int realSize = 0;
1550                 Window fullCopy[] = new Window[fullSize];
1551                 for (int i = 0; i < fullSize; i++) {
1552                     Window w = windowList.get(i).get();
1553                     if (w != null) {
1554                         fullCopy[realSize++] = w;
1555                     }
1556                 }
1557                 if (fullSize != realSize) {
1558                     realCopy = Arrays.copyOf(fullCopy, realSize);
1559                 } else {
1560                     realCopy = fullCopy;
1561                 }
1562             } else {
1563                 realCopy = new Window[0];
1564             }
1565             return realCopy;
1566         }
1567     }
1568 
1569     /**
1570      * Returns an array of all {@code Window}s, both owned and ownerless,
1571      * created by this application.
1572      * If called from an applet, the array includes only the {@code Window}s
1573      * accessible by that applet.
1574      * <p>
1575      * <b>Warning:</b> this method may return system created windows, such
1576      * as a print dialog. Applications should not assume the existence of
1577      * these dialogs, nor should an application assume anything about these
1578      * dialogs such as component positions, <code>LayoutManager</code>s
1579      * or serialization.
1580      *
1581      * @see Frame#getFrames
1582      * @see Window#getOwnerlessWindows
1583      *
1584      * @since 1.6
1585      */
1586     public static Window[] getWindows() {
1587         return getWindows(AppContext.getAppContext());
1588     }
1589 
1590     /**
1591      * Returns an array of all {@code Window}s created by this application
1592      * that have no owner. They include {@code Frame}s and ownerless
1593      * {@code Dialog}s and {@code Window}s.
1594      * If called from an applet, the array includes only the {@code Window}s
1595      * accessible by that applet.
1596      * <p>
1597      * <b>Warning:</b> this method may return system created windows, such
1598      * as a print dialog. Applications should not assume the existence of
1599      * these dialogs, nor should an application assume anything about these
1600      * dialogs such as component positions, <code>LayoutManager</code>s
1601      * or serialization.
1602      *
1603      * @see Frame#getFrames
1604      * @see Window#getWindows()
1605      *
1606      * @since 1.6
1607      */
1608     public static Window[] getOwnerlessWindows() {
1609         Window[] allWindows = Window.getWindows();
1610 
1611         int ownerlessCount = 0;
1612         for (Window w : allWindows) {
1613             if (w.getOwner() == null) {
1614                 ownerlessCount++;
1615             }
1616         }
1617 
1618         Window[] ownerless = new Window[ownerlessCount];
1619         int c = 0;
1620         for (Window w : allWindows) {
1621             if (w.getOwner() == null) {
1622                 ownerless[c++] = w;
1623             }
1624         }
1625 
1626         return ownerless;
1627     }
1628 
1629     Window getDocumentRoot() {
1630         synchronized (getTreeLock()) {
1631             Window w = this;
1632             while (w.getOwner() != null) {
1633                 w = w.getOwner();
1634             }
1635             return w;
1636         }
1637     }
1638 
1639     /**
1640      * Specifies the modal exclusion type for this window. If a window is modal
1641      * excluded, it is not blocked by some modal dialogs. See {@link
1642      * java.awt.Dialog.ModalExclusionType Dialog.ModalExclusionType} for
1643      * possible modal exclusion types.
1644      * <p>
1645      * If the given type is not supported, <code>NO_EXCLUDE</code> is used.
1646      * <p>
1647      * Note: changing the modal exclusion type for a visible window may have no
1648      * effect until it is hidden and then shown again.
1649      *
1650      * @param exclusionType the modal exclusion type for this window; a <code>null</code>
1651      *     value is equivivalent to {@link Dialog.ModalExclusionType#NO_EXCLUDE
1652      *     NO_EXCLUDE}
1653      * @throws SecurityException if the calling thread does not have permission
1654      *     to set the modal exclusion property to the window with the given
1655      *     <code>exclusionType</code>
1656      * @see java.awt.Dialog.ModalExclusionType
1657      * @see java.awt.Window#getModalExclusionType
1658      * @see java.awt.Toolkit#isModalExclusionTypeSupported
1659      *
1660      * @since 1.6
1661      */
1662     public void setModalExclusionType(Dialog.ModalExclusionType exclusionType) {
1663         if (exclusionType == null) {
1664             exclusionType = Dialog.ModalExclusionType.NO_EXCLUDE;
1665         }
1666         if (!Toolkit.getDefaultToolkit().isModalExclusionTypeSupported(exclusionType)) {
1667             exclusionType = Dialog.ModalExclusionType.NO_EXCLUDE;
1668         }
1669         if (modalExclusionType == exclusionType) {
1670             return;
1671         }
1672         if (exclusionType == Dialog.ModalExclusionType.TOOLKIT_EXCLUDE) {
1673             SecurityManager sm = System.getSecurityManager();
1674             if (sm != null) {
1675                 sm.checkPermission(SecurityConstants.AWT.TOOLKIT_MODALITY_PERMISSION);
1676             }
1677         }
1678         modalExclusionType = exclusionType;
1679 
1680         // if we want on-fly changes, we need to uncomment the lines below
1681         //   and override the method in Dialog to use modalShow() instead
1682         //   of updateChildrenBlocking()
1683  /*
1684         if (isModalBlocked()) {
1685             modalBlocker.unblockWindow(this);
1686         }
1687         Dialog.checkShouldBeBlocked(this);
1688         updateChildrenBlocking();
1689  */
1690     }
1691 
1692     /**
1693      * Returns the modal exclusion type of this window.
1694      *
1695      * @return the modal exclusion type of this window
1696      *
1697      * @see java.awt.Dialog.ModalExclusionType
1698      * @see java.awt.Window#setModalExclusionType
1699      *
1700      * @since 1.6
1701      */
1702     public Dialog.ModalExclusionType getModalExclusionType() {
1703         return modalExclusionType;
1704     }
1705 
1706     boolean isModalExcluded(Dialog.ModalExclusionType exclusionType) {
1707         if ((modalExclusionType != null) &&
1708             modalExclusionType.compareTo(exclusionType) >= 0)
1709         {
1710             return true;
1711         }
1712         Window owner = getOwner_NoClientCode();
1713         return (owner != null) && owner.isModalExcluded(exclusionType);
1714     }
1715 
1716     void updateChildrenBlocking() {
1717         Vector<Window> childHierarchy = new Vector<Window>();
1718         Window[] ownedWindows = getOwnedWindows();
1719         for (int i = 0; i < ownedWindows.length; i++) {
1720             childHierarchy.add(ownedWindows[i]);
1721         }
1722         int k = 0;
1723         while (k < childHierarchy.size()) {
1724             Window w = childHierarchy.get(k);
1725             if (w.isVisible()) {
1726                 if (w.isModalBlocked()) {
1727                     Dialog blocker = w.getModalBlocker();
1728                     blocker.unblockWindow(w);
1729                 }
1730                 Dialog.checkShouldBeBlocked(w);
1731                 Window[] wOwned = w.getOwnedWindows();
1732                 for (int j = 0; j < wOwned.length; j++) {
1733                     childHierarchy.add(wOwned[j]);
1734                 }
1735             }
1736             k++;
1737         }
1738     }
1739 
1740     /**
1741      * Adds the specified window listener to receive window events from
1742      * this window.
1743      * If l is null, no exception is thrown and no action is performed.
1744      * <p>Refer to <a href="doc-files/AWTThreadIssues.html#ListenersThreads"
1745      * >AWT Threading Issues</a> for details on AWT's threading model.
1746      *
1747      * @param   l the window listener
1748      * @see #removeWindowListener
1749      * @see #getWindowListeners
1750      */
1751     public synchronized void addWindowListener(WindowListener l) {
1752         if (l == null) {
1753             return;
1754         }
1755         newEventsOnly = true;
1756         windowListener = AWTEventMulticaster.add(windowListener, l);
1757     }
1758 
1759     /**
1760      * Adds the specified window state listener to receive window
1761      * events from this window.  If <code>l</code> is <code>null</code>,
1762      * no exception is thrown and no action is performed.
1763      * <p>Refer to <a href="doc-files/AWTThreadIssues.html#ListenersThreads"
1764      * >AWT Threading Issues</a> for details on AWT's threading model.
1765      *
1766      * @param   l the window state listener
1767      * @see #removeWindowStateListener
1768      * @see #getWindowStateListeners
1769      * @since 1.4
1770      */
1771     public synchronized void addWindowStateListener(WindowStateListener l) {
1772         if (l == null) {
1773             return;
1774         }
1775         windowStateListener = AWTEventMulticaster.add(windowStateListener, l);
1776         newEventsOnly = true;
1777     }
1778 
1779     /**
1780      * Adds the specified window focus listener to receive window events
1781      * from this window.
1782      * If l is null, no exception is thrown and no action is performed.
1783      * <p>Refer to <a href="doc-files/AWTThreadIssues.html#ListenersThreads"
1784      * >AWT Threading Issues</a> for details on AWT's threading model.
1785      *
1786      * @param   l the window focus listener
1787      * @see #removeWindowFocusListener
1788      * @see #getWindowFocusListeners
1789      * @since 1.4
1790      */
1791     public synchronized void addWindowFocusListener(WindowFocusListener l) {
1792         if (l == null) {
1793             return;
1794         }
1795         windowFocusListener = AWTEventMulticaster.add(windowFocusListener, l);
1796         newEventsOnly = true;
1797     }
1798 
1799     /**
1800      * Removes the specified window listener so that it no longer
1801      * receives window events from this window.
1802      * If l is null, no exception is thrown and no action is performed.
1803      * <p>Refer to <a href="doc-files/AWTThreadIssues.html#ListenersThreads"
1804      * >AWT Threading Issues</a> for details on AWT's threading model.
1805      *
1806      * @param   l the window listener
1807      * @see #addWindowListener
1808      * @see #getWindowListeners
1809      */
1810     public synchronized void removeWindowListener(WindowListener l) {
1811         if (l == null) {
1812             return;
1813         }
1814         windowListener = AWTEventMulticaster.remove(windowListener, l);
1815     }
1816 
1817     /**
1818      * Removes the specified window state listener so that it no
1819      * longer receives window events from this window.  If
1820      * <code>l</code> is <code>null</code>, no exception is thrown and
1821      * no action is performed.
1822      * <p>Refer to <a href="doc-files/AWTThreadIssues.html#ListenersThreads"
1823      * >AWT Threading Issues</a> for details on AWT's threading model.
1824      *
1825      * @param   l the window state listener
1826      * @see #addWindowStateListener
1827      * @see #getWindowStateListeners
1828      * @since 1.4
1829      */
1830     public synchronized void removeWindowStateListener(WindowStateListener l) {
1831         if (l == null) {
1832             return;
1833         }
1834         windowStateListener = AWTEventMulticaster.remove(windowStateListener, l);
1835     }
1836 
1837     /**
1838      * Removes the specified window focus listener so that it no longer
1839      * receives window events from this window.
1840      * If l is null, no exception is thrown and no action is performed.
1841      * <p>Refer to <a href="doc-files/AWTThreadIssues.html#ListenersThreads"
1842      * >AWT Threading Issues</a> for details on AWT's threading model.
1843      *
1844      * @param   l the window focus listener
1845      * @see #addWindowFocusListener
1846      * @see #getWindowFocusListeners
1847      * @since 1.4
1848      */
1849     public synchronized void removeWindowFocusListener(WindowFocusListener l) {
1850         if (l == null) {
1851             return;
1852         }
1853         windowFocusListener = AWTEventMulticaster.remove(windowFocusListener, l);
1854     }
1855 
1856     /**
1857      * Returns an array of all the window listeners
1858      * registered on this window.
1859      *
1860      * @return all of this window's <code>WindowListener</code>s
1861      *         or an empty array if no window
1862      *         listeners are currently registered
1863      *
1864      * @see #addWindowListener
1865      * @see #removeWindowListener
1866      * @since 1.4
1867      */
1868     public synchronized WindowListener[] getWindowListeners() {
1869         return (WindowListener[])(getListeners(WindowListener.class));
1870     }
1871 
1872     /**
1873      * Returns an array of all the window focus listeners
1874      * registered on this window.
1875      *
1876      * @return all of this window's <code>WindowFocusListener</code>s
1877      *         or an empty array if no window focus
1878      *         listeners are currently registered
1879      *
1880      * @see #addWindowFocusListener
1881      * @see #removeWindowFocusListener
1882      * @since 1.4
1883      */
1884     public synchronized WindowFocusListener[] getWindowFocusListeners() {
1885         return (WindowFocusListener[])(getListeners(WindowFocusListener.class));
1886     }
1887 
1888     /**
1889      * Returns an array of all the window state listeners
1890      * registered on this window.
1891      *
1892      * @return all of this window's <code>WindowStateListener</code>s
1893      *         or an empty array if no window state
1894      *         listeners are currently registered
1895      *
1896      * @see #addWindowStateListener
1897      * @see #removeWindowStateListener
1898      * @since 1.4
1899      */
1900     public synchronized WindowStateListener[] getWindowStateListeners() {
1901         return (WindowStateListener[])(getListeners(WindowStateListener.class));
1902     }
1903 
1904 
1905     /**
1906      * Returns an array of all the objects currently registered
1907      * as <code><em>Foo</em>Listener</code>s
1908      * upon this <code>Window</code>.
1909      * <code><em>Foo</em>Listener</code>s are registered using the
1910      * <code>add<em>Foo</em>Listener</code> method.
1911      *
1912      * <p>
1913      *
1914      * You can specify the <code>listenerType</code> argument
1915      * with a class literal, such as
1916      * <code><em>Foo</em>Listener.class</code>.
1917      * For example, you can query a
1918      * <code>Window</code> <code>w</code>
1919      * for its window listeners with the following code:
1920      *
1921      * <pre>WindowListener[] wls = (WindowListener[])(w.getListeners(WindowListener.class));</pre>
1922      *
1923      * If no such listeners exist, this method returns an empty array.
1924      *
1925      * @param listenerType the type of listeners requested; this parameter
1926      *          should specify an interface that descends from
1927      *          <code>java.util.EventListener</code>
1928      * @return an array of all objects registered as
1929      *          <code><em>Foo</em>Listener</code>s on this window,
1930      *          or an empty array if no such
1931      *          listeners have been added
1932      * @exception ClassCastException if <code>listenerType</code>
1933      *          doesn't specify a class or interface that implements
1934      *          <code>java.util.EventListener</code>
1935      * @exception NullPointerException if {@code listenerType} is {@code null}
1936      *
1937      * @see #getWindowListeners
1938      * @since 1.3
1939      */
1940     public <T extends EventListener> T[] getListeners(Class<T> listenerType) {
1941         EventListener l = null;
1942         if (listenerType == WindowFocusListener.class) {
1943             l = windowFocusListener;
1944         } else if (listenerType == WindowStateListener.class) {
1945             l = windowStateListener;
1946         } else if (listenerType == WindowListener.class) {
1947             l = windowListener;
1948         } else {
1949             return super.getListeners(listenerType);
1950         }
1951         return AWTEventMulticaster.getListeners(l, listenerType);
1952     }
1953 
1954     // REMIND: remove when filtering is handled at lower level
1955     boolean eventEnabled(AWTEvent e) {
1956         switch(e.id) {
1957           case WindowEvent.WINDOW_OPENED:
1958           case WindowEvent.WINDOW_CLOSING:
1959           case WindowEvent.WINDOW_CLOSED:
1960           case WindowEvent.WINDOW_ICONIFIED:
1961           case WindowEvent.WINDOW_DEICONIFIED:
1962           case WindowEvent.WINDOW_ACTIVATED:
1963           case WindowEvent.WINDOW_DEACTIVATED:
1964             if ((eventMask & AWTEvent.WINDOW_EVENT_MASK) != 0 ||
1965                 windowListener != null) {
1966                 return true;
1967             }
1968             return false;
1969           case WindowEvent.WINDOW_GAINED_FOCUS:
1970           case WindowEvent.WINDOW_LOST_FOCUS:
1971             if ((eventMask & AWTEvent.WINDOW_FOCUS_EVENT_MASK) != 0 ||
1972                 windowFocusListener != null) {
1973                 return true;
1974             }
1975             return false;
1976           case WindowEvent.WINDOW_STATE_CHANGED:
1977             if ((eventMask & AWTEvent.WINDOW_STATE_EVENT_MASK) != 0 ||
1978                 windowStateListener != null) {
1979                 return true;
1980             }
1981             return false;
1982           default:
1983             break;
1984         }
1985         return super.eventEnabled(e);
1986     }
1987 
1988     /**
1989      * Processes events on this window. If the event is an
1990      * <code>WindowEvent</code>, it invokes the
1991      * <code>processWindowEvent</code> method, else it invokes its
1992      * superclass's <code>processEvent</code>.
1993      * <p>Note that if the event parameter is <code>null</code>
1994      * the behavior is unspecified and may result in an
1995      * exception.
1996      *
1997      * @param e the event
1998      */
1999     protected void processEvent(AWTEvent e) {
2000         if (e instanceof WindowEvent) {
2001             switch (e.getID()) {
2002                 case WindowEvent.WINDOW_OPENED:
2003                 case WindowEvent.WINDOW_CLOSING:
2004                 case WindowEvent.WINDOW_CLOSED:
2005                 case WindowEvent.WINDOW_ICONIFIED:
2006                 case WindowEvent.WINDOW_DEICONIFIED:
2007                 case WindowEvent.WINDOW_ACTIVATED:
2008                 case WindowEvent.WINDOW_DEACTIVATED:
2009                     processWindowEvent((WindowEvent)e);
2010                     break;
2011                 case WindowEvent.WINDOW_GAINED_FOCUS:
2012                 case WindowEvent.WINDOW_LOST_FOCUS:
2013                     processWindowFocusEvent((WindowEvent)e);
2014                     break;
2015                 case WindowEvent.WINDOW_STATE_CHANGED:
2016                     processWindowStateEvent((WindowEvent)e);
2017                 default:
2018                     break;
2019             }
2020             return;
2021         }
2022         super.processEvent(e);
2023     }
2024 
2025     /**
2026      * Processes window events occurring on this window by
2027      * dispatching them to any registered WindowListener objects.
2028      * NOTE: This method will not be called unless window events
2029      * are enabled for this component; this happens when one of the
2030      * following occurs:
2031      * <ul>
2032      * <li>A WindowListener object is registered via
2033      *     <code>addWindowListener</code>
2034      * <li>Window events are enabled via <code>enableEvents</code>
2035      * </ul>
2036      * <p>Note that if the event parameter is <code>null</code>
2037      * the behavior is unspecified and may result in an
2038      * exception.
2039      *
2040      * @param e the window event
2041      * @see Component#enableEvents
2042      */
2043     protected void processWindowEvent(WindowEvent e) {
2044         WindowListener listener = windowListener;
2045         if (listener != null) {
2046             switch(e.getID()) {
2047                 case WindowEvent.WINDOW_OPENED:
2048                     listener.windowOpened(e);
2049                     break;
2050                 case WindowEvent.WINDOW_CLOSING:
2051                     listener.windowClosing(e);
2052                     break;
2053                 case WindowEvent.WINDOW_CLOSED:
2054                     listener.windowClosed(e);
2055                     break;
2056                 case WindowEvent.WINDOW_ICONIFIED:
2057                     listener.windowIconified(e);
2058                     break;
2059                 case WindowEvent.WINDOW_DEICONIFIED:
2060                     listener.windowDeiconified(e);
2061                     break;
2062                 case WindowEvent.WINDOW_ACTIVATED:
2063                     listener.windowActivated(e);
2064                     break;
2065                 case WindowEvent.WINDOW_DEACTIVATED:
2066                     listener.windowDeactivated(e);
2067                     break;
2068                 default:
2069                     break;
2070             }
2071         }
2072     }
2073 
2074     /**
2075      * Processes window focus event occuring on this window by
2076      * dispatching them to any registered WindowFocusListener objects.
2077      * NOTE: this method will not be called unless window focus events
2078      * are enabled for this window. This happens when one of the
2079      * following occurs:
2080      * <ul>
2081      * <li>a WindowFocusListener is registered via
2082      *     <code>addWindowFocusListener</code>
2083      * <li>Window focus events are enabled via <code>enableEvents</code>
2084      * </ul>
2085      * <p>Note that if the event parameter is <code>null</code>
2086      * the behavior is unspecified and may result in an
2087      * exception.
2088      *
2089      * @param e the window focus event
2090      * @see Component#enableEvents
2091      * @since 1.4
2092      */
2093     protected void processWindowFocusEvent(WindowEvent e) {
2094         WindowFocusListener listener = windowFocusListener;
2095         if (listener != null) {
2096             switch (e.getID()) {
2097                 case WindowEvent.WINDOW_GAINED_FOCUS:
2098                     listener.windowGainedFocus(e);
2099                     break;
2100                 case WindowEvent.WINDOW_LOST_FOCUS:
2101                     listener.windowLostFocus(e);
2102                     break;
2103                 default:
2104                     break;
2105             }
2106         }
2107     }
2108 
2109     /**
2110      * Processes window state event occuring on this window by
2111      * dispatching them to any registered <code>WindowStateListener</code>
2112      * objects.
2113      * NOTE: this method will not be called unless window state events
2114      * are enabled for this window.  This happens when one of the
2115      * following occurs:
2116      * <ul>
2117      * <li>a <code>WindowStateListener</code> is registered via
2118      *    <code>addWindowStateListener</code>
2119      * <li>window state events are enabled via <code>enableEvents</code>
2120      * </ul>
2121      * <p>Note that if the event parameter is <code>null</code>
2122      * the behavior is unspecified and may result in an
2123      * exception.
2124      *
2125      * @param e the window state event
2126      * @see java.awt.Component#enableEvents
2127      * @since 1.4
2128      */
2129     protected void processWindowStateEvent(WindowEvent e) {
2130         WindowStateListener listener = windowStateListener;
2131         if (listener != null) {
2132             switch (e.getID()) {
2133                 case WindowEvent.WINDOW_STATE_CHANGED:
2134                     listener.windowStateChanged(e);
2135                     break;
2136                 default:
2137                     break;
2138             }
2139         }
2140     }
2141 
2142     /**
2143      * Implements a debugging hook -- checks to see if
2144      * the user has typed <i>control-shift-F1</i>.  If so,
2145      * the list of child windows is dumped to <code>System.out</code>.
2146      * @param e  the keyboard event
2147      */
2148     void preProcessKeyEvent(KeyEvent e) {
2149         // Dump the list of child windows to System.out.
2150         if (e.isActionKey() && e.getKeyCode() == KeyEvent.VK_F1 &&
2151             e.isControlDown() && e.isShiftDown() &&
2152             e.getID() == KeyEvent.KEY_PRESSED) {
2153             list(System.out, 0);
2154         }
2155     }
2156 
2157     void postProcessKeyEvent(KeyEvent e) {
2158         // Do nothing
2159     }
2160 
2161 
2162     /**
2163      * Sets whether this window should always be above other windows.  If
2164      * there are multiple always-on-top windows, their relative order is
2165      * unspecified and platform dependent.
2166      * <p>
2167      * If some other window is already always-on-top then the
2168      * relative order between these windows is unspecified (depends on
2169      * platform).  No window can be brought to be over the always-on-top
2170      * window except maybe another always-on-top window.
2171      * <p>
2172      * All windows owned by an always-on-top window inherit this state and
2173      * automatically become always-on-top.  If a window ceases to be
2174      * always-on-top, the windows that it owns will no longer be
2175      * always-on-top.  When an always-on-top window is sent {@link #toBack
2176      * toBack}, its always-on-top state is set to <code>false</code>.
2177      *
2178      * <p> When this method is called on a window with a value of
2179      * <code>true</code>, and the window is visible and the platform
2180      * supports always-on-top for this window, the window is immediately
2181      * brought forward, "sticking" it in the top-most position. If the
2182      * window isn`t currently visible, this method sets the always-on-top
2183      * state to <code>true</code> but does not bring the window forward.
2184      * When the window is later shown, it will be always-on-top.
2185      *
2186      * <p> When this method is called on a window with a value of
2187      * <code>false</code> the always-on-top state is set to normal. The
2188      * window remains in the top-most position but it`s z-order can be
2189      * changed as for any other window.  Calling this method with a value
2190      * of <code>false</code> on a window that has a normal state has no
2191      * effect.  Setting the always-on-top state to false has no effect on
2192      * the relative z-order of the windows if there are no other
2193      * always-on-top windows.
2194      *
2195      * <p><b>Note</b>: some platforms might not support always-on-top
2196      * windows.  To detect if always-on-top windows are supported by the
2197      * current platform, use {@link Toolkit#isAlwaysOnTopSupported()} and
2198      * {@link Window#isAlwaysOnTopSupported()}.  If always-on-top mode
2199      * isn't supported by the toolkit or for this window, calling this
2200      * method has no effect.
2201      * <p>
2202      * If a SecurityManager is installed, the calling thread must be
2203      * granted the AWTPermission "setWindowAlwaysOnTop" in
2204      * order to set the value of this property. If this
2205      * permission is not granted, this method will throw a
2206      * SecurityException, and the current value of the property will
2207      * be left unchanged.
2208      *
2209      * @param alwaysOnTop true if the window should always be above other
2210      *        windows
2211      * @throws SecurityException if the calling thread does not have
2212      *         permission to set the value of always-on-top property
2213      * @see #isAlwaysOnTop
2214      * @see #toFront
2215      * @see #toBack
2216      * @see AWTPermission
2217      * @see #isAlwaysOnTopSupported
2218      * @see Toolkit#isAlwaysOnTopSupported
2219      * @since 1.5
2220      */
2221     public final void setAlwaysOnTop(boolean alwaysOnTop) throws SecurityException {
2222         SecurityManager security = System.getSecurityManager();
2223         if (security != null) {
2224             security.checkPermission(SecurityConstants.AWT.SET_WINDOW_ALWAYS_ON_TOP_PERMISSION);
2225         }
2226 
2227         boolean oldAlwaysOnTop;
2228         synchronized(this) {
2229             oldAlwaysOnTop = this.alwaysOnTop;
2230             this.alwaysOnTop = alwaysOnTop;
2231         }
2232         if (oldAlwaysOnTop != alwaysOnTop ) {
2233             if (isAlwaysOnTopSupported()) {
2234                 WindowPeer peer = (WindowPeer)this.peer;
2235                 synchronized(getTreeLock()) {
2236                     if (peer != null) {
2237                         peer.setAlwaysOnTop(alwaysOnTop);
2238                     }
2239                 }
2240             }
2241             firePropertyChange("alwaysOnTop", oldAlwaysOnTop, alwaysOnTop);
2242         }
2243     }
2244 
2245     /**
2246      * Returns whether the always-on-top mode is supported for this
2247      * window. Some platforms may not support always-on-top windows, some
2248      * may support only some kinds of top-level windows; for example,
2249      * a platform may not support always-on-top modal dialogs.
2250      * @return <code>true</code>, if the always-on-top mode is
2251      *         supported by the toolkit and for this window,
2252      *         <code>false</code>, if always-on-top mode is not supported
2253      *         for this window or toolkit doesn't support always-on-top windows.
2254      * @see #setAlwaysOnTop(boolean)
2255      * @see Toolkit#isAlwaysOnTopSupported
2256      * @since 1.6
2257      */
2258     public boolean isAlwaysOnTopSupported() {
2259         return Toolkit.getDefaultToolkit().isAlwaysOnTopSupported();
2260     }
2261 
2262 
2263     /**
2264      * Returns whether this window is an always-on-top window.
2265      * @return <code>true</code>, if the window is in always-on-top state,
2266      *         <code>false</code> otherwise
2267      * @see #setAlwaysOnTop
2268      * @since 1.5
2269      */
2270     public final boolean isAlwaysOnTop() {
2271         return alwaysOnTop;
2272     }
2273 
2274 
2275     /**
2276      * Returns the child Component of this Window that has focus if this Window
2277      * is focused; returns null otherwise.
2278      *
2279      * @return the child Component with focus, or null if this Window is not
2280      *         focused
2281      * @see #getMostRecentFocusOwner
2282      * @see #isFocused
2283      */
2284     public Component getFocusOwner() {
2285         return (isFocused())
2286             ? KeyboardFocusManager.getCurrentKeyboardFocusManager().
2287                   getFocusOwner()
2288             : null;
2289     }
2290 
2291     /**
2292      * Returns the child Component of this Window that will receive the focus
2293      * when this Window is focused. If this Window is currently focused, this
2294      * method returns the same Component as <code>getFocusOwner()</code>. If
2295      * this Window is not focused, then the child Component that most recently
2296      * requested focus will be returned. If no child Component has ever
2297      * requested focus, and this is a focusable Window, then this Window's
2298      * initial focusable Component is returned. If no child Component has ever
2299      * requested focus, and this is a non-focusable Window, null is returned.
2300      *
2301      * @return the child Component that will receive focus when this Window is
2302      *         focused
2303      * @see #getFocusOwner
2304      * @see #isFocused
2305      * @see #isFocusableWindow
2306      * @since 1.4
2307      */
2308     public Component getMostRecentFocusOwner() {
2309         if (isFocused()) {
2310             return getFocusOwner();
2311         } else {
2312             Component mostRecent =
2313                 KeyboardFocusManager.getMostRecentFocusOwner(this);
2314             if (mostRecent != null) {
2315                 return mostRecent;
2316             } else {
2317                 return (isFocusableWindow())
2318                     ? getFocusTraversalPolicy().getInitialComponent(this)
2319                     : null;
2320             }
2321         }
2322     }
2323 
2324     /**
2325      * Returns whether this Window is active. Only a Frame or a Dialog may be
2326      * active. The native windowing system may denote the active Window or its
2327      * children with special decorations, such as a highlighted title bar. The
2328      * active Window is always either the focused Window, or the first Frame or
2329      * Dialog that is an owner of the focused Window.
2330      *
2331      * @return whether this is the active Window.
2332      * @see #isFocused
2333      * @since 1.4
2334      */
2335     public boolean isActive() {
2336         return (KeyboardFocusManager.getCurrentKeyboardFocusManager().
2337                 getActiveWindow() == this);
2338     }
2339 
2340     /**
2341      * Returns whether this Window is focused. If there exists a focus owner,
2342      * the focused Window is the Window that is, or contains, that focus owner.
2343      * If there is no focus owner, then no Window is focused.
2344      * <p>
2345      * If the focused Window is a Frame or a Dialog it is also the active
2346      * Window. Otherwise, the active Window is the first Frame or Dialog that
2347      * is an owner of the focused Window.
2348      *
2349      * @return whether this is the focused Window.
2350      * @see #isActive
2351      * @since 1.4
2352      */
2353     public boolean isFocused() {
2354         return (KeyboardFocusManager.getCurrentKeyboardFocusManager().
2355                 getGlobalFocusedWindow() == this);
2356     }
2357 
2358     /**
2359      * Gets a focus traversal key for this Window. (See <code>
2360      * setFocusTraversalKeys</code> for a full description of each key.)
2361      * <p>
2362      * If the traversal key has not been explicitly set for this Window,
2363      * then this Window's parent's traversal key is returned. If the
2364      * traversal key has not been explicitly set for any of this Window's
2365      * ancestors, then the current KeyboardFocusManager's default traversal key
2366      * is returned.
2367      *
2368      * @param id one of KeyboardFocusManager.FORWARD_TRAVERSAL_KEYS,
2369      *         KeyboardFocusManager.BACKWARD_TRAVERSAL_KEYS,
2370      *         KeyboardFocusManager.UP_CYCLE_TRAVERSAL_KEYS, or
2371      *         KeyboardFocusManager.DOWN_CYCLE_TRAVERSAL_KEYS
2372      * @return the AWTKeyStroke for the specified key
2373      * @see Container#setFocusTraversalKeys
2374      * @see KeyboardFocusManager#FORWARD_TRAVERSAL_KEYS
2375      * @see KeyboardFocusManager#BACKWARD_TRAVERSAL_KEYS
2376      * @see KeyboardFocusManager#UP_CYCLE_TRAVERSAL_KEYS
2377      * @see KeyboardFocusManager#DOWN_CYCLE_TRAVERSAL_KEYS
2378      * @throws IllegalArgumentException if id is not one of
2379      *         KeyboardFocusManager.FORWARD_TRAVERSAL_KEYS,
2380      *         KeyboardFocusManager.BACKWARD_TRAVERSAL_KEYS,
2381      *         KeyboardFocusManager.UP_CYCLE_TRAVERSAL_KEYS, or
2382      *         KeyboardFocusManager.DOWN_CYCLE_TRAVERSAL_KEYS
2383      * @since 1.4
2384      */
2385     public Set<AWTKeyStroke> getFocusTraversalKeys(int id) {
2386         if (id < 0 || id >= KeyboardFocusManager.TRAVERSAL_KEY_LENGTH) {
2387             throw new IllegalArgumentException("invalid focus traversal key identifier");
2388         }
2389 
2390         // Okay to return Set directly because it is an unmodifiable view
2391         Set keystrokes = (focusTraversalKeys != null)
2392             ? focusTraversalKeys[id]
2393             : null;
2394 
2395         if (keystrokes != null) {
2396             return keystrokes;
2397         } else {
2398             return KeyboardFocusManager.getCurrentKeyboardFocusManager().
2399                 getDefaultFocusTraversalKeys(id);
2400         }
2401     }
2402 
2403     /**
2404      * Does nothing because Windows must always be roots of a focus traversal
2405      * cycle. The passed-in value is ignored.
2406      *
2407      * @param focusCycleRoot this value is ignored
2408      * @see #isFocusCycleRoot
2409      * @see Container#setFocusTraversalPolicy
2410      * @see Container#getFocusTraversalPolicy
2411      * @since 1.4
2412      */
2413     public final void setFocusCycleRoot(boolean focusCycleRoot) {
2414     }
2415 
2416     /**
2417      * Always returns <code>true</code> because all Windows must be roots of a
2418      * focus traversal cycle.
2419      *
2420      * @return <code>true</code>
2421      * @see #setFocusCycleRoot
2422      * @see Container#setFocusTraversalPolicy
2423      * @see Container#getFocusTraversalPolicy
2424      * @since 1.4
2425      */
2426     public final boolean isFocusCycleRoot() {
2427         return true;
2428     }
2429 
2430     /**
2431      * Always returns <code>null</code> because Windows have no ancestors; they
2432      * represent the top of the Component hierarchy.
2433      *
2434      * @return <code>null</code>
2435      * @see Container#isFocusCycleRoot()
2436      * @since 1.4
2437      */
2438     public final Container getFocusCycleRootAncestor() {
2439         return null;
2440     }
2441 
2442     /**
2443      * Returns whether this Window can become the focused Window, that is,
2444      * whether this Window or any of its subcomponents can become the focus
2445      * owner. For a Frame or Dialog to be focusable, its focusable Window state
2446      * must be set to <code>true</code>. For a Window which is not a Frame or
2447      * Dialog to be focusable, its focusable Window state must be set to
2448      * <code>true</code>, its nearest owning Frame or Dialog must be
2449      * showing on the screen, and it must contain at least one Component in
2450      * its focus traversal cycle. If any of these conditions is not met, then
2451      * neither this Window nor any of its subcomponents can become the focus
2452      * owner.
2453      *
2454      * @return <code>true</code> if this Window can be the focused Window;
2455      *         <code>false</code> otherwise
2456      * @see #getFocusableWindowState
2457      * @see #setFocusableWindowState
2458      * @see #isShowing
2459      * @see Component#isFocusable
2460      * @since 1.4
2461      */
2462     public final boolean isFocusableWindow() {
2463         // If a Window/Frame/Dialog was made non-focusable, then it is always
2464         // non-focusable.
2465         if (!getFocusableWindowState()) {
2466             return false;
2467         }
2468 
2469         // All other tests apply only to Windows.
2470         if (this instanceof Frame || this instanceof Dialog) {
2471             return true;
2472         }
2473 
2474         // A Window must have at least one Component in its root focus
2475         // traversal cycle to be focusable.
2476         if (getFocusTraversalPolicy().getDefaultComponent(this) == null) {
2477             return false;
2478         }
2479 
2480         // A Window's nearest owning Frame or Dialog must be showing on the
2481         // screen.
2482         for (Window owner = getOwner(); owner != null;
2483              owner = owner.getOwner())
2484         {
2485             if (owner instanceof Frame || owner instanceof Dialog) {
2486                 return owner.isShowing();
2487             }
2488         }
2489 
2490         return false;
2491     }
2492 
2493     /**
2494      * Returns whether this Window can become the focused Window if it meets
2495      * the other requirements outlined in <code>isFocusableWindow</code>. If
2496      * this method returns <code>false</code>, then
2497      * <code>isFocusableWindow</code> will return <code>false</code> as well.
2498      * If this method returns <code>true</code>, then
2499      * <code>isFocusableWindow</code> may return <code>true</code> or
2500      * <code>false</code> depending upon the other requirements which must be
2501      * met in order for a Window to be focusable.
2502      * <p>
2503      * By default, all Windows have a focusable Window state of
2504      * <code>true</code>.
2505      *
2506      * @return whether this Window can be the focused Window
2507      * @see #isFocusableWindow
2508      * @see #setFocusableWindowState
2509      * @see #isShowing
2510      * @see Component#setFocusable
2511      * @since 1.4
2512      */
2513     public boolean getFocusableWindowState() {
2514         return focusableWindowState;
2515     }
2516 
2517     /**
2518      * Sets whether this Window can become the focused Window if it meets
2519      * the other requirements outlined in <code>isFocusableWindow</code>. If
2520      * this Window's focusable Window state is set to <code>false</code>, then
2521      * <code>isFocusableWindow</code> will return <code>false</code>. If this
2522      * Window's focusable Window state is set to <code>true</code>, then
2523      * <code>isFocusableWindow</code> may return <code>true</code> or
2524      * <code>false</code> depending upon the other requirements which must be
2525      * met in order for a Window to be focusable.
2526      * <p>
2527      * Setting a Window's focusability state to <code>false</code> is the
2528      * standard mechanism for an application to identify to the AWT a Window
2529      * which will be used as a floating palette or toolbar, and thus should be
2530      * a non-focusable Window.
2531      *
2532      * Setting the focusability state on a visible <code>Window</code>
2533      * can have a delayed effect on some platforms &#151; the actual
2534      * change may happen only when the <code>Window</code> becomes
2535      * hidden and then visible again.  To ensure consistent behavior
2536      * across platforms, set the <code>Window</code>'s focusable state
2537      * when the <code>Window</code> is invisible and then show it.
2538      *
2539      * @param focusableWindowState whether this Window can be the focused
2540      *        Window
2541      * @see #isFocusableWindow
2542      * @see #getFocusableWindowState
2543      * @see #isShowing
2544      * @see Component#setFocusable
2545      * @since 1.4
2546      */
2547     public void setFocusableWindowState(boolean focusableWindowState) {
2548         boolean oldFocusableWindowState;
2549         synchronized (this) {
2550             oldFocusableWindowState = this.focusableWindowState;
2551             this.focusableWindowState = focusableWindowState;
2552         }
2553         WindowPeer peer = (WindowPeer)this.peer;
2554         if (peer != null) {
2555             peer.updateFocusableWindowState();
2556         }
2557         firePropertyChange("focusableWindowState", oldFocusableWindowState,
2558                            focusableWindowState);
2559         if (oldFocusableWindowState && !focusableWindowState && isFocused()) {
2560             for (Window owner = getOwner();
2561                  owner != null;
2562                  owner = owner.getOwner())
2563                 {
2564                     Component toFocus =
2565                         KeyboardFocusManager.getMostRecentFocusOwner(owner);
2566                     if (toFocus != null && toFocus.requestFocus(false, CausedFocusEvent.Cause.ACTIVATION)) {
2567                         return;
2568                     }
2569                 }
2570             KeyboardFocusManager.getCurrentKeyboardFocusManager().
2571                 clearGlobalFocusOwnerPriv();
2572         }
2573     }
2574 
2575     /**
2576      * Sets whether this window should receive focus on
2577      * subsequently being shown (with a call to {@link #setVisible setVisible(true)}),
2578      * or being moved to the front (with a call to {@link #toFront}).
2579      * <p>
2580      * Note that {@link #setVisible setVisible(true)} may be called indirectly
2581      * (e.g. when showing an owner of the window makes the window to be shown).
2582      * {@link #toFront} may also be called indirectly (e.g. when
2583      * {@link #setVisible setVisible(true)} is called on already visible window).
2584      * In all such cases this property takes effect as well.
2585      * <p>
2586      * The value of the property is not inherited by owned windows.
2587      *
2588      * @param autoRequestFocus whether this window should be focused on
2589      *        subsequently being shown or being moved to the front
2590      * @see #isAutoRequestFocus
2591      * @see #isFocusableWindow
2592      * @see #setVisible
2593      * @see #toFront
2594      * @since 1.7
2595      */
2596     public void setAutoRequestFocus(boolean autoRequestFocus) {
2597         this.autoRequestFocus = autoRequestFocus;
2598     }
2599 
2600     /**
2601      * Returns whether this window should receive focus on subsequently being shown
2602      * (with a call to {@link #setVisible setVisible(true)}), or being moved to the front
2603      * (with a call to {@link #toFront}).
2604      * <p>
2605      * By default, the window has {@code autoRequestFocus} value of {@code true}.
2606      *
2607      * @return {@code autoRequestFocus} value
2608      * @see #setAutoRequestFocus
2609      * @since 1.7
2610      */
2611     public boolean isAutoRequestFocus() {
2612         return autoRequestFocus;
2613     }
2614 
2615     /**
2616      * Adds a PropertyChangeListener to the listener list. The listener is
2617      * registered for all bound properties of this class, including the
2618      * following:
2619      * <ul>
2620      *    <li>this Window's font ("font")</li>
2621      *    <li>this Window's background color ("background")</li>
2622      *    <li>this Window's foreground color ("foreground")</li>
2623      *    <li>this Window's focusability ("focusable")</li>
2624      *    <li>this Window's focus traversal keys enabled state
2625      *        ("focusTraversalKeysEnabled")</li>
2626      *    <li>this Window's Set of FORWARD_TRAVERSAL_KEYS
2627      *        ("forwardFocusTraversalKeys")</li>
2628      *    <li>this Window's Set of BACKWARD_TRAVERSAL_KEYS
2629      *        ("backwardFocusTraversalKeys")</li>
2630      *    <li>this Window's Set of UP_CYCLE_TRAVERSAL_KEYS
2631      *        ("upCycleFocusTraversalKeys")</li>
2632      *    <li>this Window's Set of DOWN_CYCLE_TRAVERSAL_KEYS
2633      *        ("downCycleFocusTraversalKeys")</li>
2634      *    <li>this Window's focus traversal policy ("focusTraversalPolicy")
2635      *        </li>
2636      *    <li>this Window's focusable Window state ("focusableWindowState")
2637      *        </li>
2638      *    <li>this Window's always-on-top state("alwaysOnTop")</li>
2639      * </ul>
2640      * Note that if this Window is inheriting a bound property, then no
2641      * event will be fired in response to a change in the inherited property.
2642      * <p>
2643      * If listener is null, no exception is thrown and no action is performed.
2644      *
2645      * @param    listener  the PropertyChangeListener to be added
2646      *
2647      * @see Component#removePropertyChangeListener
2648      * @see #addPropertyChangeListener(java.lang.String,java.beans.PropertyChangeListener)
2649      */
2650     public void addPropertyChangeListener(PropertyChangeListener listener) {
2651         super.addPropertyChangeListener(listener);
2652     }
2653 
2654     /**
2655      * Adds a PropertyChangeListener to the listener list for a specific
2656      * property. The specified property may be user-defined, or one of the
2657      * following:
2658      * <ul>
2659      *    <li>this Window's font ("font")</li>
2660      *    <li>this Window's background color ("background")</li>
2661      *    <li>this Window's foreground color ("foreground")</li>
2662      *    <li>this Window's focusability ("focusable")</li>
2663      *    <li>this Window's focus traversal keys enabled state
2664      *        ("focusTraversalKeysEnabled")</li>
2665      *    <li>this Window's Set of FORWARD_TRAVERSAL_KEYS
2666      *        ("forwardFocusTraversalKeys")</li>
2667      *    <li>this Window's Set of BACKWARD_TRAVERSAL_KEYS
2668      *        ("backwardFocusTraversalKeys")</li>
2669      *    <li>this Window's Set of UP_CYCLE_TRAVERSAL_KEYS
2670      *        ("upCycleFocusTraversalKeys")</li>
2671      *    <li>this Window's Set of DOWN_CYCLE_TRAVERSAL_KEYS
2672      *        ("downCycleFocusTraversalKeys")</li>
2673      *    <li>this Window's focus traversal policy ("focusTraversalPolicy")
2674      *        </li>
2675      *    <li>this Window's focusable Window state ("focusableWindowState")
2676      *        </li>
2677      *    <li>this Window's always-on-top state("alwaysOnTop")</li>
2678      * </ul>
2679      * Note that if this Window is inheriting a bound property, then no
2680      * event will be fired in response to a change in the inherited property.
2681      * <p>
2682      * If listener is null, no exception is thrown and no action is performed.
2683      *
2684      * @param propertyName one of the property names listed above
2685      * @param listener the PropertyChangeListener to be added
2686      *
2687      * @see #addPropertyChangeListener(java.beans.PropertyChangeListener)
2688      * @see Component#removePropertyChangeListener
2689      */
2690     public void addPropertyChangeListener(String propertyName,
2691                                           PropertyChangeListener listener) {
2692         super.addPropertyChangeListener(propertyName, listener);
2693     }
2694 
2695     /**
2696      * Indicates if this container is a validate root.
2697      * <p>
2698      * {@code Window} objects are the validate roots, and, therefore, they
2699      * override this method to return {@code true}.
2700      *
2701      * @return {@code true}
2702      * @since 1.7
2703      * @see java.awt.Container#isValidateRoot
2704      */
2705     @Override
2706     public boolean isValidateRoot() {
2707         return true;
2708     }
2709 
2710     /**
2711      * Dispatches an event to this window or one of its sub components.
2712      * @param e the event
2713      */
2714     void dispatchEventImpl(AWTEvent e) {
2715         if (e.getID() == ComponentEvent.COMPONENT_RESIZED) {
2716             invalidate();
2717             validate();
2718         }
2719         super.dispatchEventImpl(e);
2720     }
2721 
2722     /**
2723      * @deprecated As of JDK version 1.1
2724      * replaced by <code>dispatchEvent(AWTEvent)</code>.
2725      */
2726     @Deprecated
2727     public boolean postEvent(Event e) {
2728         if (handleEvent(e)) {
2729             e.consume();
2730             return true;
2731         }
2732         return false;
2733     }
2734 
2735     /**
2736      * Checks if this Window is showing on screen.
2737      * @see Component#setVisible
2738     */
2739     public boolean isShowing() {
2740         return visible;
2741     }
2742 
2743     boolean isDisposing() {
2744         return disposing;
2745     }
2746 
2747     /**
2748      * @deprecated As of J2SE 1.4, replaced by
2749      * {@link Component#applyComponentOrientation Component.applyComponentOrientation}.
2750      */
2751     @Deprecated
2752     public void applyResourceBundle(ResourceBundle rb) {
2753         applyComponentOrientation(ComponentOrientation.getOrientation(rb));
2754     }
2755 
2756     /**
2757      * @deprecated As of J2SE 1.4, replaced by
2758      * {@link Component#applyComponentOrientation Component.applyComponentOrientation}.
2759      */
2760     @Deprecated
2761     public void applyResourceBundle(String rbName) {
2762         applyResourceBundle(ResourceBundle.getBundle(rbName));
2763     }
2764 
2765    /*
2766     * Support for tracking all windows owned by this window
2767     */
2768     void addOwnedWindow(WeakReference weakWindow) {
2769         if (weakWindow != null) {
2770             synchronized(ownedWindowList) {
2771                 // this if statement should really be an assert, but we don't
2772                 // have asserts...
2773                 if (!ownedWindowList.contains(weakWindow)) {
2774                     ownedWindowList.addElement(weakWindow);
2775                 }
2776             }
2777         }
2778     }
2779 
2780     void removeOwnedWindow(WeakReference weakWindow) {
2781         if (weakWindow != null) {
2782             // synchronized block not required since removeElement is
2783             // already synchronized
2784             ownedWindowList.removeElement(weakWindow);
2785         }
2786     }
2787 
2788     void connectOwnedWindow(Window child) {
2789         child.parent = this;
2790         addOwnedWindow(child.weakThis);
2791     }
2792 
2793     private void addToWindowList() {
2794         synchronized (Window.class) {
2795             Vector<WeakReference<Window>> windowList = (Vector<WeakReference<Window>>)appContext.get(Window.class);
2796             if (windowList == null) {
2797                 windowList = new Vector<WeakReference<Window>>();
2798                 appContext.put(Window.class, windowList);
2799             }
2800             windowList.add(weakThis);
2801         }
2802     }
2803 
2804     private static void removeFromWindowList(AppContext context, WeakReference weakThis) {
2805         synchronized (Window.class) {
2806             Vector<WeakReference<Window>> windowList = (Vector<WeakReference<Window>>)context.get(Window.class);
2807             if (windowList != null) {
2808                 windowList.remove(weakThis);
2809             }
2810         }
2811     }
2812 
2813     private void removeFromWindowList() {
2814         removeFromWindowList(appContext, weakThis);
2815     }
2816 
2817     /**
2818      * Window type.
2819      *
2820      * Synchronization: ObjectLock
2821      */
2822     private Type type = Type.NORMAL;
2823 
2824     /**
2825      * Sets the type of the window.
2826      *
2827      * This method can only be called while the window is not displayable.
2828      *
2829      * @throws IllegalComponentStateException if the window
2830      *         is displayable.
2831      * @throws IllegalArgumentException if the type is {@code null}
2832      * @see    Component#isDisplayable
2833      * @see    #getType
2834      * @since 1.7
2835      */
2836     public void setType(Type type) {
2837         if (type == null) {
2838             throw new IllegalArgumentException("type should not be null.");
2839         }
2840         synchronized (getTreeLock()) {
2841             if (isDisplayable()) {
2842                 throw new IllegalComponentStateException(
2843                         "The window is displayable.");
2844             }
2845             synchronized (getObjectLock()) {
2846                 this.type = type;
2847             }
2848         }
2849     }
2850 
2851     /**
2852      * Returns the type of the window.
2853      *
2854      * @see   #setType
2855      * @since 1.7
2856      */
2857     public Type getType() {
2858         synchronized (getObjectLock()) {
2859             return type;
2860         }
2861     }
2862 
2863     /**
2864      * The window serialized data version.
2865      *
2866      * @serial
2867      */
2868     private int windowSerializedDataVersion = 2;
2869 
2870     /**
2871      * Writes default serializable fields to stream.  Writes
2872      * a list of serializable <code>WindowListener</code>s and
2873      * <code>WindowFocusListener</code>s as optional data.
2874      * Writes a list of child windows as optional data.
2875      * Writes a list of icon images as optional data
2876      *
2877      * @param s the <code>ObjectOutputStream</code> to write
2878      * @serialData <code>null</code> terminated sequence of
2879      *    0 or more pairs; the pair consists of a <code>String</code>
2880      *    and and <code>Object</code>; the <code>String</code>
2881      *    indicates the type of object and is one of the following:
2882      *    <code>windowListenerK</code> indicating a
2883      *      <code>WindowListener</code> object;
2884      *    <code>windowFocusWindowK</code> indicating a
2885      *      <code>WindowFocusListener</code> object;
2886      *    <code>ownedWindowK</code> indicating a child
2887      *      <code>Window</code> object
2888      *
2889      * @see AWTEventMulticaster#save(java.io.ObjectOutputStream, java.lang.String, java.util.EventListener)
2890      * @see Component#windowListenerK
2891      * @see Component#windowFocusListenerK
2892      * @see Component#ownedWindowK
2893      * @see #readObject(ObjectInputStream)
2894      */
2895     private void writeObject(ObjectOutputStream s) throws IOException {
2896         synchronized (this) {
2897             // Update old focusMgr fields so that our object stream can be read
2898             // by previous releases
2899             focusMgr = new FocusManager();
2900             focusMgr.focusRoot = this;
2901             focusMgr.focusOwner = getMostRecentFocusOwner();
2902 
2903             s.defaultWriteObject();
2904 
2905             // Clear fields so that we don't keep extra references around
2906             focusMgr = null;
2907 
2908             AWTEventMulticaster.save(s, windowListenerK, windowListener);
2909             AWTEventMulticaster.save(s, windowFocusListenerK, windowFocusListener);
2910             AWTEventMulticaster.save(s, windowStateListenerK, windowStateListener);
2911         }
2912 
2913         s.writeObject(null);
2914 
2915         synchronized (ownedWindowList) {
2916             for (int i = 0; i < ownedWindowList.size(); i++) {
2917                 Window child = ownedWindowList.elementAt(i).get();
2918                 if (child != null) {
2919                     s.writeObject(ownedWindowK);
2920                     s.writeObject(child);
2921                 }
2922             }
2923         }
2924         s.writeObject(null);
2925 
2926         //write icon array
2927         if (icons != null) {
2928             for (Image i : icons) {
2929                 if (i instanceof Serializable) {
2930                     s.writeObject(i);
2931                 }
2932             }
2933         }
2934         s.writeObject(null);
2935     }
2936 
2937     //
2938     // Part of deserialization procedure to be called before
2939     // user's code.
2940     //
2941     private void initDeserializedWindow() {
2942         setWarningString();
2943         inputContextLock = new Object();
2944 
2945         // Deserialized Windows are not yet visible.
2946         visible = false;
2947 
2948         weakThis = new WeakReference(this);
2949 
2950         anchor = new Object();
2951         sun.java2d.Disposer.addRecord(anchor, new WindowDisposerRecord(appContext, this));
2952 
2953         addToWindowList();
2954         initGC(null);
2955     }
2956 
2957     private void deserializeResources(ObjectInputStream s)
2958         throws ClassNotFoundException, IOException, HeadlessException {
2959             ownedWindowList = new Vector();
2960 
2961             if (windowSerializedDataVersion < 2) {
2962                 // Translate old-style focus tracking to new model. For 1.4 and
2963                 // later releases, we'll rely on the Window's initial focusable
2964                 // Component.
2965                 if (focusMgr != null) {
2966                     if (focusMgr.focusOwner != null) {
2967                         KeyboardFocusManager.
2968                             setMostRecentFocusOwner(this, focusMgr.focusOwner);
2969                     }
2970                 }
2971 
2972                 // This field is non-transient and relies on default serialization.
2973                 // However, the default value is insufficient, so we need to set
2974                 // it explicitly for object data streams prior to 1.4.
2975                 focusableWindowState = true;
2976 
2977 
2978             }
2979 
2980         Object keyOrNull;
2981         while(null != (keyOrNull = s.readObject())) {
2982             String key = ((String)keyOrNull).intern();
2983 
2984             if (windowListenerK == key) {
2985                 addWindowListener((WindowListener)(s.readObject()));
2986             } else if (windowFocusListenerK == key) {
2987                 addWindowFocusListener((WindowFocusListener)(s.readObject()));
2988             } else if (windowStateListenerK == key) {
2989                 addWindowStateListener((WindowStateListener)(s.readObject()));
2990             } else // skip value for unrecognized key
2991                 s.readObject();
2992         }
2993 
2994         try {
2995             while (null != (keyOrNull = s.readObject())) {
2996                 String key = ((String)keyOrNull).intern();
2997 
2998                 if (ownedWindowK == key)
2999                     connectOwnedWindow((Window) s.readObject());
3000 
3001                 else // skip value for unrecognized key
3002                     s.readObject();
3003             }
3004 
3005             //read icons
3006             Object obj = s.readObject(); //Throws OptionalDataException
3007                                          //for pre1.6 objects.
3008             icons = new ArrayList<Image>(); //Frame.readObject() assumes
3009                                             //pre1.6 version if icons is null.
3010             while (obj != null) {
3011                 if (obj instanceof Image) {
3012                     icons.add((Image)obj);
3013                 }
3014                 obj = s.readObject();
3015             }
3016         }
3017         catch (OptionalDataException e) {
3018             // 1.1 serialized form
3019             // ownedWindowList will be updated by Frame.readObject
3020         }
3021 
3022     }
3023 
3024     /**
3025      * Reads the <code>ObjectInputStream</code> and an optional
3026      * list of listeners to receive various events fired by
3027      * the component; also reads a list of
3028      * (possibly <code>null</code>) child windows.
3029      * Unrecognized keys or values will be ignored.
3030      *
3031      * @param s the <code>ObjectInputStream</code> to read
3032      * @exception HeadlessException if
3033      *   <code>GraphicsEnvironment.isHeadless</code> returns
3034      *   <code>true</code>
3035      * @see java.awt.GraphicsEnvironment#isHeadless
3036      * @see #writeObject
3037      */
3038     private void readObject(ObjectInputStream s)
3039       throws ClassNotFoundException, IOException, HeadlessException
3040     {
3041          GraphicsEnvironment.checkHeadless();
3042          initDeserializedWindow();
3043          ObjectInputStream.GetField f = s.readFields();
3044 
3045          syncLWRequests = f.get("syncLWRequests", systemSyncLWRequests);
3046          state = f.get("state", 0);
3047          focusableWindowState = f.get("focusableWindowState", true);
3048          windowSerializedDataVersion = f.get("windowSerializedDataVersion", 1);
3049          locationByPlatform = f.get("locationByPlatform", locationByPlatformProp);
3050          // Note: 1.4 (or later) doesn't use focusMgr
3051          focusMgr = (FocusManager)f.get("focusMgr", null);
3052          Dialog.ModalExclusionType et = (Dialog.ModalExclusionType)
3053              f.get("modalExclusionType", Dialog.ModalExclusionType.NO_EXCLUDE);
3054          setModalExclusionType(et); // since 6.0
3055          boolean aot = f.get("alwaysOnTop", false);
3056          if(aot) {
3057              setAlwaysOnTop(aot); // since 1.5; subject to permission check
3058          }
3059          shape = (Shape)f.get("shape", null);
3060          opacity = (Float)f.get("opacity", 1.0f);
3061 
3062          this.securityWarningWidth = 0;
3063          this.securityWarningHeight = 0;
3064          this.securityWarningPointX = 2.0;
3065          this.securityWarningPointY = 0.0;
3066          this.securityWarningAlignmentX = RIGHT_ALIGNMENT;
3067          this.securityWarningAlignmentY = TOP_ALIGNMENT;
3068 
3069          deserializeResources(s);
3070     }
3071 
3072     /*
3073      * --- Accessibility Support ---
3074      *
3075      */
3076 
3077     /**
3078      * Gets the AccessibleContext associated with this Window.
3079      * For windows, the AccessibleContext takes the form of an
3080      * AccessibleAWTWindow.
3081      * A new AccessibleAWTWindow instance is created if necessary.
3082      *
3083      * @return an AccessibleAWTWindow that serves as the
3084      *         AccessibleContext of this Window
3085      * @since 1.3
3086      */
3087     public AccessibleContext getAccessibleContext() {
3088         if (accessibleContext == null) {
3089             accessibleContext = new AccessibleAWTWindow();
3090         }
3091         return accessibleContext;
3092     }
3093 
3094     /**
3095      * This class implements accessibility support for the
3096      * <code>Window</code> class.  It provides an implementation of the
3097      * Java Accessibility API appropriate to window user-interface elements.
3098      * @since 1.3
3099      */
3100     protected class AccessibleAWTWindow extends AccessibleAWTContainer
3101     {
3102         /*
3103          * JDK 1.3 serialVersionUID
3104          */
3105         private static final long serialVersionUID = 4215068635060671780L;
3106 
3107         /**
3108          * Get the role of this object.
3109          *
3110          * @return an instance of AccessibleRole describing the role of the
3111          * object
3112          * @see javax.accessibility.AccessibleRole
3113          */
3114         public AccessibleRole getAccessibleRole() {
3115             return AccessibleRole.WINDOW;
3116         }
3117 
3118         /**
3119          * Get the state of this object.
3120          *
3121          * @return an instance of AccessibleStateSet containing the current
3122          * state set of the object
3123          * @see javax.accessibility.AccessibleState
3124          */
3125         public AccessibleStateSet getAccessibleStateSet() {
3126             AccessibleStateSet states = super.getAccessibleStateSet();
3127             if (getFocusOwner() != null) {
3128                 states.add(AccessibleState.ACTIVE);
3129             }
3130             return states;
3131         }
3132 
3133     } // inner class AccessibleAWTWindow
3134 
3135     @Override
3136     void setGraphicsConfiguration(GraphicsConfiguration gc) {
3137         if (gc == null) {
3138             gc = GraphicsEnvironment.
3139                     getLocalGraphicsEnvironment().
3140                     getDefaultScreenDevice().
3141                     getDefaultConfiguration();
3142         }
3143         synchronized (getTreeLock()) {
3144             super.setGraphicsConfiguration(gc);
3145             if (log.isLoggable(PlatformLogger.FINER)) {
3146                 log.finer("+ Window.setGraphicsConfiguration(): new GC is \n+ " + getGraphicsConfiguration_NoClientCode() + "\n+ this is " + this);
3147             }
3148         }
3149     }
3150 
3151     /**
3152      * Sets the location of the window relative to the specified
3153      * component according to the following scenarios.
3154      * <p>
3155      * The target screen mentioned below is a screen to which
3156      * the window should be placed after the setLocationRelativeTo
3157      * method is called.
3158      * <ul>
3159      * <li>If the component is {@code null}, or the {@code
3160      * GraphicsConfiguration} associated with this component is
3161      * {@code null}, the window is placed in the center of the
3162      * screen. The center point can be obtained with the {@link
3163      * GraphicsEnvironment#getCenterPoint
3164      * GraphicsEnvironment.getCenterPoint} method.
3165      * <li>If the component is not {@code null}, but it is not
3166      * currently showing, the window is placed in the center of
3167      * the target screen defined by the {@code
3168      * GraphicsConfiguration} associated with this component.
3169      * <li>If the component is not {@code null} and is shown on
3170      * the screen, then the window is located in such a way that
3171      * the center of the window coincides with the center of the
3172      * component.
3173      * </ul>
3174      * <p>
3175      * If the screens configuration does not allow the window to
3176      * be moved from one screen to another, then the window is
3177      * only placed at the location determined according to the
3178      * above conditions and its {@code GraphicsConfiguration} is
3179      * not changed.
3180      * <p>
3181      * <b>Note</b>: If the lower edge of the window is out of the screen,
3182      * then the window is placed to the side of the <code>Component</code>
3183      * that is closest to the center of the screen. So if the
3184      * component is on the right part of the screen, the window
3185      * is placed to its left, and vice versa.
3186      * <p>
3187      * If after the window location has been calculated, the upper,
3188      * left, or right edge of the window is out of the screen,
3189      * then the window is located in such a way that the upper,
3190      * left, or right edge of the window coincides with the
3191      * corresponding edge of the screen. If both left and right
3192      * edges of the window are out of the screen, the window is
3193      * placed at the left side of the screen. The similar placement
3194      * will occur if both top and bottom edges are out of the screen.
3195      * In that case, the window is placed at the top side of the screen.
3196      * <p>
3197      * The method changes the geometry-related data. Therefore,
3198      * the native windowing system may ignore such requests, or it may modify
3199      * the requested data, so that the {@code Window} object is placed and sized
3200      * in a way that corresponds closely to the desktop settings.
3201      *
3202      * @param c  the component in relation to which the window's location
3203      *           is determined
3204      * @see java.awt.GraphicsEnvironment#getCenterPoint
3205      * @since 1.4
3206      */
3207     public void setLocationRelativeTo(Component c) {
3208         // target location
3209         int dx = 0, dy = 0;
3210         // target GC
3211         GraphicsConfiguration gc = getGraphicsConfiguration_NoClientCode();
3212         Rectangle gcBounds = gc.getBounds();
3213 
3214         Dimension windowSize = getSize();
3215 
3216         // search a top-level of c
3217         Window componentWindow = SunToolkit.getContainingWindow(c);
3218         if ((c == null) || (componentWindow == null)) {
3219             GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment();
3220             gc = ge.getDefaultScreenDevice().getDefaultConfiguration();
3221             gcBounds = gc.getBounds();
3222             Point centerPoint = ge.getCenterPoint();
3223             dx = centerPoint.x - windowSize.width / 2;
3224             dy = centerPoint.y - windowSize.height / 2;
3225         } else if (!c.isShowing()) {
3226             gc = componentWindow.getGraphicsConfiguration();
3227             gcBounds = gc.getBounds();
3228             dx = gcBounds.x + (gcBounds.width - windowSize.width) / 2;
3229             dy = gcBounds.y + (gcBounds.height - windowSize.height) / 2;
3230         } else {
3231             gc = componentWindow.getGraphicsConfiguration();
3232             gcBounds = gc.getBounds();
3233             Dimension compSize = c.getSize();
3234             Point compLocation = c.getLocationOnScreen();
3235             dx = compLocation.x + ((compSize.width - windowSize.width) / 2);
3236             dy = compLocation.y + ((compSize.height - windowSize.height) / 2);
3237 
3238             // Adjust for bottom edge being offscreen
3239             if (dy + windowSize.height > gcBounds.y + gcBounds.height) {
3240                 dy = gcBounds.y + gcBounds.height - windowSize.height;
3241                 if (compLocation.x - gcBounds.x + compSize.width / 2 < gcBounds.width / 2) {
3242                     dx = compLocation.x + compSize.width;
3243                 } else {
3244                     dx = compLocation.x - windowSize.width;
3245                 }
3246             }
3247         }
3248 
3249         // Avoid being placed off the edge of the screen:
3250         // bottom
3251         if (dy + windowSize.height > gcBounds.y + gcBounds.height) {
3252             dy = gcBounds.y + gcBounds.height - windowSize.height;
3253         }
3254         // top
3255         if (dy < gcBounds.y) {
3256             dy = gcBounds.y;
3257         }
3258         // right
3259         if (dx + windowSize.width > gcBounds.x + gcBounds.width) {
3260             dx = gcBounds.x + gcBounds.width - windowSize.width;
3261         }
3262         // left
3263         if (dx < gcBounds.x) {
3264             dx = gcBounds.x;
3265         }
3266 
3267         setLocation(dx, dy);
3268     }
3269 
3270     /**
3271      * Overridden from Component.  Top-level Windows should not propagate a
3272      * MouseWheelEvent beyond themselves into their owning Windows.
3273      */
3274     void deliverMouseWheelToAncestor(MouseWheelEvent e) {}
3275 
3276     /**
3277      * Overridden from Component.  Top-level Windows don't dispatch to ancestors
3278      */
3279     boolean dispatchMouseWheelToAncestor(MouseWheelEvent e) {return false;}
3280 
3281     /**
3282      * Creates a new strategy for multi-buffering on this component.
3283      * Multi-buffering is useful for rendering performance.  This method
3284      * attempts to create the best strategy available with the number of
3285      * buffers supplied.  It will always create a <code>BufferStrategy</code>
3286      * with that number of buffers.
3287      * A page-flipping strategy is attempted first, then a blitting strategy
3288      * using accelerated buffers.  Finally, an unaccelerated blitting
3289      * strategy is used.
3290      * <p>
3291      * Each time this method is called,
3292      * the existing buffer strategy for this component is discarded.
3293      * @param numBuffers number of buffers to create
3294      * @exception IllegalArgumentException if numBuffers is less than 1.
3295      * @exception IllegalStateException if the component is not displayable
3296      * @see #isDisplayable
3297      * @see #getBufferStrategy
3298      * @since 1.4
3299      */
3300     public void createBufferStrategy(int numBuffers) {
3301         super.createBufferStrategy(numBuffers);
3302     }
3303 
3304     /**
3305      * Creates a new strategy for multi-buffering on this component with the
3306      * required buffer capabilities.  This is useful, for example, if only
3307      * accelerated memory or page flipping is desired (as specified by the
3308      * buffer capabilities).
3309      * <p>
3310      * Each time this method
3311      * is called, the existing buffer strategy for this component is discarded.
3312      * @param numBuffers number of buffers to create, including the front buffer
3313      * @param caps the required capabilities for creating the buffer strategy;
3314      * cannot be <code>null</code>
3315      * @exception AWTException if the capabilities supplied could not be
3316      * supported or met; this may happen, for example, if there is not enough
3317      * accelerated memory currently available, or if page flipping is specified
3318      * but not possible.
3319      * @exception IllegalArgumentException if numBuffers is less than 1, or if
3320      * caps is <code>null</code>
3321      * @see #getBufferStrategy
3322      * @since 1.4
3323      */
3324     public void createBufferStrategy(int numBuffers,
3325         BufferCapabilities caps) throws AWTException {
3326         super.createBufferStrategy(numBuffers, caps);
3327     }
3328 
3329     /**
3330      * Returns the <code>BufferStrategy</code> used by this component.  This
3331      * method will return null if a <code>BufferStrategy</code> has not yet
3332      * been created or has been disposed.
3333      *
3334      * @return the buffer strategy used by this component
3335      * @see #createBufferStrategy
3336      * @since 1.4
3337      */
3338     public BufferStrategy getBufferStrategy() {
3339         return super.getBufferStrategy();
3340     }
3341 
3342     Component getTemporaryLostComponent() {
3343         return temporaryLostComponent;
3344     }
3345     Component setTemporaryLostComponent(Component component) {
3346         Component previousComp = temporaryLostComponent;
3347         // Check that "component" is an acceptable focus owner and don't store it otherwise
3348         // - or later we will have problems with opposite while handling  WINDOW_GAINED_FOCUS
3349         if (component == null || component.canBeFocusOwner()) {
3350             temporaryLostComponent = component;
3351         } else {
3352             temporaryLostComponent = null;
3353         }
3354         return previousComp;
3355     }
3356 
3357     /**
3358      * Checks whether this window can contain focus owner.
3359      * Verifies that it is focusable and as container it can container focus owner.
3360      * @since 1.5
3361      */
3362     boolean canContainFocusOwner(Component focusOwnerCandidate) {
3363         return super.canContainFocusOwner(focusOwnerCandidate) && isFocusableWindow();
3364     }
3365 
3366     private boolean locationByPlatform = locationByPlatformProp;
3367 
3368 
3369     /**
3370      * Sets whether this Window should appear at the default location for the
3371      * native windowing system or at the current location (returned by
3372      * <code>getLocation</code>) the next time the Window is made visible.
3373      * This behavior resembles a native window shown without programmatically
3374      * setting its location.  Most windowing systems cascade windows if their
3375      * locations are not explicitly set. The actual location is determined once the
3376      * window is shown on the screen.
3377      * <p>
3378      * This behavior can also be enabled by setting the System Property
3379      * "java.awt.Window.locationByPlatform" to "true", though calls to this method
3380      * take precedence.
3381      * <p>
3382      * Calls to <code>setVisible</code>, <code>setLocation</code> and
3383      * <code>setBounds</code> after calling <code>setLocationByPlatform</code> clear
3384      * this property of the Window.
3385      * <p>
3386      * For example, after the following code is executed:
3387      * <pre><blockquote>
3388      * setLocationByPlatform(true);
3389      * setVisible(true);
3390      * boolean flag = isLocationByPlatform();
3391      * </blockquote></pre>
3392      * The window will be shown at platform's default location and
3393      * <code>flag</code> will be <code>false</code>.
3394      * <p>
3395      * In the following sample:
3396      * <pre><blockquote>
3397      * setLocationByPlatform(true);
3398      * setLocation(10, 10);
3399      * boolean flag = isLocationByPlatform();
3400      * setVisible(true);
3401      * </blockquote></pre>
3402      * The window will be shown at (10, 10) and <code>flag</code> will be
3403      * <code>false</code>.
3404      *
3405      * @param locationByPlatform <code>true</code> if this Window should appear
3406      *        at the default location, <code>false</code> if at the current location
3407      * @throws <code>IllegalComponentStateException</code> if the window
3408      *         is showing on screen and locationByPlatform is <code>true</code>.
3409      * @see #setLocation
3410      * @see #isShowing
3411      * @see #setVisible
3412      * @see #isLocationByPlatform
3413      * @see java.lang.System#getProperty(String)
3414      * @since 1.5
3415      */
3416     public void setLocationByPlatform(boolean locationByPlatform) {
3417         synchronized (getTreeLock()) {
3418             if (locationByPlatform && isShowing()) {
3419                 throw new IllegalComponentStateException("The window is showing on screen.");
3420             }
3421             this.locationByPlatform = locationByPlatform;
3422         }
3423     }
3424 
3425     /**
3426      * Returns <code>true</code> if this Window will appear at the default location
3427      * for the native windowing system the next time this Window is made visible.
3428      * This method always returns <code>false</code> if the Window is showing on the
3429      * screen.
3430      *
3431      * @return whether this Window will appear at the default location
3432      * @see #setLocationByPlatform
3433      * @see #isShowing
3434      * @since 1.5
3435      */
3436     public boolean isLocationByPlatform() {
3437         synchronized (getTreeLock()) {
3438             return locationByPlatform;
3439         }
3440     }
3441 
3442     /**
3443      * {@inheritDoc}
3444      * <p>
3445      * The {@code width} or {@code height} values
3446      * are automatically enlarged if either is less than
3447      * the minimum size as specified by previous call to
3448      * {@code setMinimumSize}.
3449      * <p>
3450      * The method changes the geometry-related data. Therefore,
3451      * the native windowing system may ignore such requests, or it may modify
3452      * the requested data, so that the {@code Window} object is placed and sized
3453      * in a way that corresponds closely to the desktop settings.
3454      *
3455      * @see #getBounds
3456      * @see #setLocation(int, int)
3457      * @see #setLocation(Point)
3458      * @see #setSize(int, int)
3459      * @see #setSize(Dimension)
3460      * @see #setMinimumSize
3461      * @see #setLocationByPlatform
3462      * @see #isLocationByPlatform
3463      * @since 1.6
3464      */
3465     public void setBounds(int x, int y, int width, int height) {
3466         synchronized (getTreeLock()) {
3467             if (getBoundsOp() == ComponentPeer.SET_LOCATION ||
3468                 getBoundsOp() == ComponentPeer.SET_BOUNDS)
3469             {
3470                 locationByPlatform = false;
3471             }
3472             super.setBounds(x, y, width, height);
3473         }
3474     }
3475 
3476     /**
3477      * {@inheritDoc}
3478      * <p>
3479      * The {@code r.width} or {@code r.height} values
3480      * will be automatically enlarged if either is less than
3481      * the minimum size as specified by previous call to
3482      * {@code setMinimumSize}.
3483      * <p>
3484      * The method changes the geometry-related data. Therefore,
3485      * the native windowing system may ignore such requests, or it may modify
3486      * the requested data, so that the {@code Window} object is placed and sized
3487      * in a way that corresponds closely to the desktop settings.
3488      *
3489      * @see #getBounds
3490      * @see #setLocation(int, int)
3491      * @see #setLocation(Point)
3492      * @see #setSize(int, int)
3493      * @see #setSize(Dimension)
3494      * @see #setMinimumSize
3495      * @see #setLocationByPlatform
3496      * @see #isLocationByPlatform
3497      * @since 1.6
3498      */
3499     public void setBounds(Rectangle r) {
3500         setBounds(r.x, r.y, r.width, r.height);
3501     }
3502 
3503     /**
3504      * Determines whether this component will be displayed on the screen.
3505      * @return <code>true</code> if the component and all of its ancestors
3506      *          until a toplevel window are visible, <code>false</code> otherwise
3507      */
3508     boolean isRecursivelyVisible() {
3509         // 5079694 fix: for a toplevel to be displayed, its parent doesn't have to be visible.
3510         // We're overriding isRecursivelyVisible to implement this policy.
3511         return visible;
3512     }
3513 
3514 
3515     // ******************** SHAPES & TRANSPARENCY CODE ********************
3516 
3517     /**
3518      * Returns the opacity of the window.
3519      *
3520      * @return the opacity of the window
3521      *
3522      * @see Window#setOpacity(float)
3523      * @see GraphicsDevice.WindowTranslucency
3524      *
3525      * @since 1.7
3526      */
3527     public float getOpacity() {
3528         synchronized (getTreeLock()) {
3529             return opacity;
3530         }
3531     }
3532 
3533     /**
3534      * Sets the opacity of the window.
3535      * <p>
3536      * The opacity value is in the range [0..1]. Note that setting the opacity
3537      * level of 0 may or may not disable the mouse event handling on this
3538      * window. This is a platform-dependent behavior.
3539      * <p>
3540      * The following conditions must be met in order to set the opacity value
3541      * less than {@code 1.0f}:
3542      * <ul>
3543      * <li>The {@link GraphicsDevice.WindowTranslucency#TRANSLUCENT TRANSLUCENT}
3544      * translucency must be supported by the underlying system
3545      * <li>The window must be undecorated (see {@link Frame#setUndecorated}
3546      * and {@link Dialog#setUndecorated})
3547      * <li>The window must not be in full-screen mode (see {@link
3548      * GraphicsDevice#setFullScreenWindow(Window)})
3549      * </ul>
3550      * <p>
3551      * If the requested opacity value is less than {@code 1.0f}, and any of the
3552      * above conditions are not met, the window opacity will not change,
3553      * and the {@code IllegalComponentStateException} will be thrown.
3554      * <p>
3555      * The translucency levels of individual pixels may also be effected by the
3556      * alpha component of their color (see {@link Window#setBackground(Color)}) and the
3557      * current shape of this window (see {@link #setShape(Shape)}).
3558      *
3559      * @param opacity the opacity level to set to the window
3560      *
3561      * @throws IllegalArgumentException if the opacity is out of the range
3562      *     [0..1]
3563      * @throws IllegalComponentStateException if the window is decorated and
3564      *     the opacity is less than {@code 1.0f}
3565      * @throws IllegalComponentStateException if the window is in full screen
3566      *     mode, and the opacity is less than {@code 1.0f}
3567      * @throws UnsupportedOperationException if the {@code
3568      *     GraphicsDevice.WindowTranslucency#TRANSLUCENT TRANSLUCENT}
3569      *     translucency is not supported and the opacity is less than
3570      *     {@code 1.0f}
3571      *
3572      * @see Window#getOpacity
3573      * @see Window#setBackground(Color)
3574      * @see Window#setShape(Shape)
3575      * @see Frame#isUndecorated
3576      * @see Dialog#isUndecorated
3577      * @see GraphicsDevice.WindowTranslucency
3578      * @see GraphicsDevice#isWindowTranslucencySupported(GraphicsDevice.WindowTranslucency)
3579      *
3580      * @since 1.7
3581      */
3582     public void setOpacity(float opacity) {
3583         synchronized (getTreeLock()) {
3584             if (opacity < 0.0f || opacity > 1.0f) {
3585                 throw new IllegalArgumentException(
3586                     "The value of opacity should be in the range [0.0f .. 1.0f].");
3587             }
3588             if (opacity < 1.0f) {
3589                 GraphicsConfiguration gc = getGraphicsConfiguration();
3590                 GraphicsDevice gd = gc.getDevice();
3591                 if (gc.getDevice().getFullScreenWindow() == this) {
3592                     throw new IllegalComponentStateException(
3593                         "Setting opacity for full-screen window is not supported.");
3594                 }
3595                 if (!gd.isWindowTranslucencySupported(
3596                     GraphicsDevice.WindowTranslucency.TRANSLUCENT))
3597                 {
3598                     throw new UnsupportedOperationException(
3599                         "TRANSLUCENT translucency is not supported.");
3600                 }
3601             }
3602             this.opacity = opacity;
3603             WindowPeer peer = (WindowPeer)getPeer();
3604             if (peer != null) {
3605                 peer.setOpacity(opacity);
3606             }
3607         }
3608     }
3609 
3610     /**
3611      * Returns the shape of the window.
3612      *
3613      * The value returned by this method may not be the same as
3614      * previously set with {@code setShape(shape)}, but it is guaranteed
3615      * to represent the same shape.
3616      *
3617      * @return the shape of the window or {@code null} if no
3618      *     shape is specified for the window
3619      *
3620      * @see Window#setShape(Shape)
3621      * @see GraphicsDevice.WindowTranslucency
3622      *
3623      * @since 1.7
3624      */
3625     public Shape getShape() {
3626         synchronized (getTreeLock()) {
3627             return shape == null ? null : new Path2D.Float(shape);
3628         }
3629     }
3630 
3631     /**
3632      * Sets the shape of the window.
3633      * <p>
3634      * Setting a shape cuts off some parts of the window. Only the parts that
3635      * belong to the given {@link Shape} remain visible and clickable. If
3636      * the shape argument is {@code null}, this method restores the default
3637      * shape, making the window rectangular on most platforms.
3638      * <p>
3639      * The following conditions must be met to set a non-null shape:
3640      * <ul>
3641      * <li>The {@link GraphicsDevice.WindowTranslucency#PERPIXEL_TRANSPARENT
3642      * PERPIXEL_TRANSPARENT} translucency must be supported by the
3643      * underlying system
3644      * <li>The window must be undecorated (see {@link Frame#setUndecorated}
3645      * and {@link Dialog#setUndecorated})
3646      * <li>The window must not be in full-screen mode (see {@link
3647      * GraphicsDevice#setFullScreenWindow(Window)})
3648      * </ul>
3649      * <p>
3650      * If the requested shape is not {@code null}, and any of the above
3651      * conditions are not met, the shape of this window will not change,
3652      * and either the {@code UnsupportedOperationException} or {@code
3653      * IllegalComponentStateException} will be thrown.
3654      * <p>
3655      * The tranlucency levels of individual pixels may also be effected by the
3656      * alpha component of their color (see {@link Window#setBackground(Color)}) and the
3657      * opacity value (see {@link #setOpacity(float)}). See {@link
3658      * GraphicsDevice.WindowTranslucency} for more details.
3659      *
3660      * @param shape the shape to set to the window
3661      *
3662      * @throws IllegalComponentStateException if the shape is not {@code
3663      *     null} and the window is decorated
3664      * @throws IllegalComponentStateException if the shape is not {@code
3665      *     null} and the window is in full-screen mode
3666      * @throws UnsupportedOperationException if the shape is not {@code
3667      *     null} and {@link GraphicsDevice.WindowTranslucency#PERPIXEL_TRANSPARENT
3668      *     PERPIXEL_TRANSPARENT} translucency is not supported
3669      *
3670      * @see Window#getShape()
3671      * @see Window#setBackground(Color)
3672      * @see Window#setOpacity(float)
3673      * @see Frame#isUndecorated
3674      * @see Dialog#isUndecorated
3675      * @see GraphicsDevice.WindowTranslucency
3676      * @see GraphicsDevice#isWindowTranslucencySupported(GraphicsDevice.WindowTranslucency)
3677      *
3678      * @since 1.7
3679      */
3680     public void setShape(Shape shape) {
3681         synchronized (getTreeLock()) {
3682             if (shape != null) {
3683                 GraphicsConfiguration gc = getGraphicsConfiguration();
3684                 GraphicsDevice gd = gc.getDevice();
3685                 if (gc.getDevice().getFullScreenWindow() == this) {
3686                     throw new IllegalComponentStateException(
3687                         "Setting shape for full-screen window is not supported.");
3688                 }
3689                 if (!gd.isWindowTranslucencySupported(
3690                         GraphicsDevice.WindowTranslucency.PERPIXEL_TRANSPARENT))
3691                 {
3692                     throw new UnsupportedOperationException(
3693                         "PERPIXEL_TRANSPARENT translucency is not supported.");
3694                 }
3695             }
3696             this.shape = (shape == null) ? null : new Path2D.Float(shape);
3697             WindowPeer peer = (WindowPeer)getPeer();
3698             if (peer != null) {
3699                 peer.applyShape(shape == null ? null : Region.getInstance(shape, null));
3700             }
3701         }
3702     }
3703 
3704     /**
3705      * Gets the background color of this window.
3706      * <p>
3707      * Note that the alpha component of the returned color indicates whether
3708      * the window is in the non-opaque (per-pixel translucent) mode.
3709      *
3710      * @return this component's background color
3711      *
3712      * @see Window#setBackground(Color)
3713      * @see Window#isOpaque
3714      * @see GraphicsDevice.WindowTranslucency
3715      */
3716     @Override
3717     public Color getBackground() {
3718         return super.getBackground();
3719     }
3720 
3721     /**
3722      * Sets the background color of this window.
3723      * <p>
3724      * If the windowing system supports the {@link
3725      * GraphicsDevice.WindowTranslucency#PERPIXEL_TRANSLUCENT PERPIXEL_TRANSLUCENT}
3726      * tranclucency, the alpha component of the given background color
3727      * may effect the mode of operation for this window: it indicates whether
3728      * this window must be opaque (alpha equals {@code 1.0f}) or per-pixel translucent
3729      * (alpha is less than {@code 1.0f}). If the given background color is
3730      * {@code null}, the window is considered completely opaque.
3731      * <p>
3732      * All the following conditions must be met to enable the per-pixel
3733      * transparency mode for this window:
3734      * <ul>
3735      * <li>The {@link GraphicsDevice.WindowTranslucency#PERPIXEL_TRANSLUCENT
3736      * PERPIXEL_TRANSLUCENT} translucency must be supported by the graphics
3737      * device where this window is located
3738      * <li>The window must be undecorated (see {@link Frame#setUndecorated}
3739      * and {@link Dialog#setUndecorated})
3740      * <li>The window must not be in full-screen mode (see {@link
3741      * GraphicsDevice#setFullScreenWindow(Window)})
3742      * </ul>
3743      * <p>
3744      * If the alpha component of the requested background color is less than
3745      * {@code 1.0f}, and any of the above conditions are not met, the background
3746      * color of this window will not change, the alpha component of the given
3747      * background color will not affect the mode of operation for this window,
3748      * and either the {@code UnsupportedOperationException} or {@code
3749      * IllegalComponentStateException} will be thrown.
3750      * <p>
3751      * When the window is per-pixel translucent, the drawing sub-system
3752      * respects the alpha value of each individual pixel. If a pixel gets
3753      * painted with the alpha color component equal to zero, it becomes
3754      * visually transparent. If the alpha of the pixel is equal to 1.0f, the
3755      * pixel is fully opaque. Interim values of the alpha color component make
3756      * the pixel semi-transparent. In this mode, the background of the window
3757      * gets painted with the alpha value of the given background color. If the
3758      * alpha value of the argument of this method is equal to {@code 0}, the
3759      * background is not painted at all.
3760      * <p>
3761      * The actual level of translucency of a given pixel also depends on window
3762      * opacity (see {@link #setOpacity(float)}), as well as the current shape of
3763      * this window (see {@link #setShape(Shape)}).
3764      * <p>
3765      * Note that painting a pixel with the alpha value of {@code 0} may or may
3766      * not disable the mouse event handling on this pixel. This is a
3767      * platform-dependent behavior. To make sure the mouse events do not get
3768      * dispatched to a particular pixel, the pixel must be excluded from the
3769      * shape of the window.
3770      * <p>
3771      * Enabling the per-pixel translucency mode may change the graphics
3772      * configuration of this window due to the native platform requirements.
3773      *
3774      * @param bgColor the color to become this window's background color.
3775      *
3776      * @throws IllegalComponentStateException if the alpha value of the given
3777      *     background color is less than {@code 1.0f} and the window is decorated
3778      * @throws IllegalComponentStateException if the alpha value of the given
3779      *     background color is less than {@code 1.0f} and the window is in
3780      *     full-screen mode
3781      * @throws UnsupportedOperationException if the alpha value of the given
3782      *     background color is less than {@code 1.0f} and {@link
3783      *     GraphicsDevice.WindowTranslucency#PERPIXEL_TRANSLUCENT
3784      *     PERPIXEL_TRANSLUCENT} translucency is not supported
3785      *
3786      * @see Window#getBackground
3787      * @see Window#isOpaque
3788      * @see Window#setOpacity(float)
3789      * @see Window#setShape(Shape)
3790      * @see Frame#isUndecorated
3791      * @see Dialog#isUndecorated
3792      * @see GraphicsDevice.WindowTranslucency
3793      * @see GraphicsDevice#isWindowTranslucencySupported(GraphicsDevice.WindowTranslucency)
3794      * @see GraphicsConfiguration#isTranslucencyCapable()
3795      */
3796     @Override
3797     public void setBackground(Color bgColor) {
3798         Color oldBg = getBackground();
3799         super.setBackground(bgColor);
3800         if (oldBg != null && oldBg.equals(bgColor)) {
3801             return;
3802         }
3803         int oldAlpha = oldBg != null ? oldBg.getAlpha() : 255;
3804         int alpha = bgColor != null ? bgColor.getAlpha() : 255;
3805         if ((oldAlpha == 255) && (alpha < 255)) { // non-opaque window
3806             GraphicsConfiguration gc = getGraphicsConfiguration();
3807             GraphicsDevice gd = gc.getDevice();
3808             if (gc.getDevice().getFullScreenWindow() == this) {
3809                 throw new IllegalComponentStateException(
3810                     "Making full-screen window non opaque is not supported.");
3811             }
3812             if (!gc.isTranslucencyCapable()) {
3813                 GraphicsConfiguration capableGC = gd.getTranslucencyCapableGC();
3814                 if (capableGC == null) {
3815                     throw new UnsupportedOperationException(
3816                         "PERPIXEL_TRANSLUCENT translucency is not supported");
3817                 }
3818                 setGraphicsConfiguration(capableGC);
3819             }
3820             setLayersOpaque(this, false);
3821         } else if ((oldAlpha < 255) && (alpha == 255)) {
3822             setLayersOpaque(this, true);
3823         }
3824         WindowPeer peer = (WindowPeer)getPeer();
3825         if (peer != null) {
3826             peer.setOpaque(alpha == 255);
3827         }
3828     }
3829 
3830     /**
3831      * Indicates if the window is currently opaque.
3832      * <p>
3833      * The method returns {@code false} if the background color of the window
3834      * is not {@code null} and the alpha component of the color is less than
3835      * {@code 1.0f}. The method returns {@code true} otherwise.
3836      *
3837      * @return {@code true} if the window is opaque, {@code false} otherwise
3838      *
3839      * @see Window#getBackground
3840      * @see Window#setBackground(Color)
3841      * @since 1.7
3842      */
3843     @Override
3844     public boolean isOpaque() {
3845         Color bg = getBackground();
3846         return bg != null ? bg.getAlpha() == 255 : true;
3847     }
3848 
3849     private void updateWindow() {
3850         synchronized (getTreeLock()) {
3851             WindowPeer peer = (WindowPeer)getPeer();
3852             if (peer != null) {
3853                 peer.updateWindow();
3854             }
3855         }
3856     }
3857 
3858     /**
3859      * {@inheritDoc}
3860      *
3861      * @since 1.7
3862      */
3863     @Override
3864     public void paint(Graphics g) {
3865         if (!isOpaque()) {
3866             Graphics gg = g.create();
3867             try {
3868                 if (gg instanceof Graphics2D) {
3869                     gg.setColor(getBackground());
3870                     ((Graphics2D)gg).setComposite(AlphaComposite.getInstance(AlphaComposite.SRC));
3871                     gg.fillRect(0, 0, getWidth(), getHeight());
3872                 }
3873             } finally {
3874                 gg.dispose();
3875             }
3876         }
3877         super.paint(g);
3878     }
3879 
3880     private static void setLayersOpaque(Component component, boolean isOpaque) {
3881         // Shouldn't use instanceof to avoid loading Swing classes
3882         //    if it's a pure AWT application.
3883         if (SunToolkit.isInstanceOf(component, "javax.swing.RootPaneContainer")) {
3884             javax.swing.RootPaneContainer rpc = (javax.swing.RootPaneContainer)component;
3885             javax.swing.JRootPane root = rpc.getRootPane();
3886             javax.swing.JLayeredPane lp = root.getLayeredPane();
3887             Container c = root.getContentPane();
3888             javax.swing.JComponent content =
3889                 (c instanceof javax.swing.JComponent) ? (javax.swing.JComponent)c : null;
3890             lp.setOpaque(isOpaque);
3891             root.setOpaque(isOpaque);
3892             if (content != null) {
3893                 content.setOpaque(isOpaque);
3894 
3895                 // Iterate down one level to see whether we have a JApplet
3896                 // (which is also a RootPaneContainer) which requires processing
3897                 int numChildren = content.getComponentCount();
3898                 if (numChildren > 0) {
3899                     Component child = content.getComponent(0);
3900                     // It's OK to use instanceof here because we've
3901                     // already loaded the RootPaneContainer class by now
3902                     if (child instanceof javax.swing.RootPaneContainer) {
3903                         setLayersOpaque(child, isOpaque);
3904                     }
3905                 }
3906             }
3907         }
3908     }
3909 
3910 
3911     // ************************** MIXING CODE *******************************
3912 
3913     // A window has a parent, but it does NOT have a container
3914     @Override
3915     final Container getContainer() {
3916         return null;
3917     }
3918 
3919     /**
3920      * Applies the shape to the component
3921      * @param shape Shape to be applied to the component
3922      */
3923     @Override
3924     final void applyCompoundShape(Region shape) {
3925         // The shape calculated by mixing code is not intended to be applied
3926         // to windows or frames
3927     }
3928 
3929     @Override
3930     final void applyCurrentShape() {
3931         // The shape calculated by mixing code is not intended to be applied
3932         // to windows or frames
3933     }
3934 
3935     @Override
3936     final void mixOnReshaping() {
3937         // The shape calculated by mixing code is not intended to be applied
3938         // to windows or frames
3939     }
3940 
3941     @Override
3942     final Point getLocationOnWindow() {
3943         return new Point(0, 0);
3944     }
3945 
3946     // ****************** END OF MIXING CODE ********************************
3947 
3948     /**
3949      * Limit the given double value with the given range.
3950      */
3951     private static double limit(double value, double min, double max) {
3952         value = Math.max(value, min);
3953         value = Math.min(value, max);
3954         return value;
3955     }
3956 
3957     /**
3958      * Calculate the position of the security warning.
3959      *
3960      * This method gets the window location/size as reported by the native
3961      * system since the locally cached values may represent outdated data.
3962      *
3963      * The method is used from the native code, or via AWTAccessor.
3964      *
3965      * NOTE: this method is invoked on the toolkit thread, and therefore is not
3966      * supposed to become public/user-overridable.
3967      */
3968     private Point2D calculateSecurityWarningPosition(double x, double y,
3969             double w, double h)
3970     {
3971         // The position according to the spec of SecurityWarning.setPosition()
3972         double wx = x + w * securityWarningAlignmentX + securityWarningPointX;
3973         double wy = y + h * securityWarningAlignmentY + securityWarningPointY;
3974 
3975         // First, make sure the warning is not too far from the window bounds
3976         wx = Window.limit(wx,
3977                 x - securityWarningWidth - 2,
3978                 x + w + 2);
3979         wy = Window.limit(wy,
3980                 y - securityWarningHeight - 2,
3981                 y + h + 2);
3982 
3983         // Now make sure the warning window is visible on the screen
3984         GraphicsConfiguration graphicsConfig =
3985             getGraphicsConfiguration_NoClientCode();
3986         Rectangle screenBounds = graphicsConfig.getBounds();
3987         Insets screenInsets =
3988             Toolkit.getDefaultToolkit().getScreenInsets(graphicsConfig);
3989 
3990         wx = Window.limit(wx,
3991                 screenBounds.x + screenInsets.left,
3992                 screenBounds.x + screenBounds.width - screenInsets.right
3993                 - securityWarningWidth);
3994         wy = Window.limit(wy,
3995                 screenBounds.y + screenInsets.top,
3996                 screenBounds.y + screenBounds.height - screenInsets.bottom
3997                 - securityWarningHeight);
3998 
3999         return new Point2D.Double(wx, wy);
4000     }
4001 
4002     static {
4003         AWTAccessor.setWindowAccessor(new AWTAccessor.WindowAccessor() {
4004             public float getOpacity(Window window) {
4005                 return window.opacity;
4006             }
4007             public void setOpacity(Window window, float opacity) {
4008                 window.setOpacity(opacity);
4009             }
4010             public Shape getShape(Window window) {
4011                 return window.getShape();
4012             }
4013             public void setShape(Window window, Shape shape) {
4014                 window.setShape(shape);
4015             }
4016             public void setOpaque(Window window, boolean opaque) {
4017                 Color bg = window.getBackground();
4018                 if (bg == null) {
4019                     bg = new Color(0, 0, 0, 0);
4020                 }
4021                 window.setBackground(new Color(bg.getRed(), bg.getGreen(), bg.getBlue(),
4022                                                opaque ? 255 : 0));
4023             }
4024             public void updateWindow(Window window) {
4025                 window.updateWindow();
4026             }
4027 
4028             public Dimension getSecurityWarningSize(Window window) {
4029                 return new Dimension(window.securityWarningWidth,
4030                         window.securityWarningHeight);
4031             }
4032 
4033             public void setSecurityWarningSize(Window window, int width, int height)
4034             {
4035                 window.securityWarningWidth = width;
4036                 window.securityWarningHeight = height;
4037             }
4038 
4039             public void setSecurityWarningPosition(Window window,
4040                     Point2D point, float alignmentX, float alignmentY)
4041             {
4042                 window.securityWarningPointX = point.getX();
4043                 window.securityWarningPointY = point.getY();
4044                 window.securityWarningAlignmentX = alignmentX;
4045                 window.securityWarningAlignmentY = alignmentY;
4046 
4047                 synchronized (window.getTreeLock()) {
4048                     WindowPeer peer = (WindowPeer)window.getPeer();
4049                     if (peer != null) {
4050                         peer.repositionSecurityWarning();
4051                     }
4052                 }
4053             }
4054 
4055             public Point2D calculateSecurityWarningPosition(Window window,
4056                     double x, double y, double w, double h)
4057             {
4058                 return window.calculateSecurityWarningPosition(x, y, w, h);
4059             }
4060 
4061             public void setLWRequestStatus(Window changed, boolean status) {
4062                 changed.syncLWRequests = status;
4063             }
4064 
4065             public boolean isAutoRequestFocus(Window w) {
4066                 return w.autoRequestFocus;
4067             }
4068 
4069             public boolean isTrayIconWindow(Window w) {
4070                 return w.isTrayIconWindow;
4071             }
4072 
4073             public void setTrayIconWindow(Window w, boolean isTrayIconWindow) {
4074                 w.isTrayIconWindow = isTrayIconWindow;
4075             }
4076         }); // WindowAccessor
4077     } // static
4078 
4079     // a window doesn't need to be updated in the Z-order.
4080     @Override
4081     void updateZOrder() {}
4082 
4083 } // class Window
4084 
4085 
4086 /**
4087  * This class is no longer used, but is maintained for Serialization
4088  * backward-compatibility.
4089  */
4090 class FocusManager implements java.io.Serializable {
4091     Container focusRoot;
4092     Component focusOwner;
4093 
4094     /*
4095      * JDK 1.1 serialVersionUID
4096      */
4097     static final long serialVersionUID = 2491878825643557906L;
4098 }