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 
 230     static final int OPENED = 0x01;
 231 
 232     /**
 233      * An Integer value representing the Window State.
 234      *
 235      * @serial
 236      * @since 1.2
 237      * @see #show
 238      */
 239     int state;
 240 
 241     /**
 242      * A boolean value representing Window always-on-top state
 243      * @since 1.5
 244      * @serial
 245      * @see #setAlwaysOnTop
 246      * @see #isAlwaysOnTop
 247      */
 248     private boolean alwaysOnTop;
 249 
 250     /**
 251      * Contains all the windows that have a peer object associated,
 252      * i. e. between addNotify() and removeNotify() calls. The list
 253      * of all Window instances can be obtained from AppContext object.
 254      *
 255      * @since 1.6
 256      */
 257     private static final IdentityArrayList<Window> allWindows = new IdentityArrayList<Window>();
 258 
 259     /**
 260      * A vector containing all the windows this
 261      * window currently owns.
 262      * @since 1.2
 263      * @see #getOwnedWindows
 264      */
 265     transient Vector<WeakReference<Window>> ownedWindowList =
 266                                             new Vector<WeakReference<Window>>();
 267 
 268     /*
 269      * We insert a weak reference into the Vector of all Windows in AppContext
 270      * instead of 'this' so that garbage collection can still take place
 271      * correctly.
 272      */
 273     private transient WeakReference<Window> weakThis;
 274 
 275     transient boolean showWithParent;
 276 
 277     /**
 278      * Contains the modal dialog that blocks this window, or null
 279      * if the window is unblocked.
 280      *
 281      * @since 1.6
 282      */
 283     transient Dialog modalBlocker;
 284 
 285     /**
 286      * @serial
 287      *
 288      * @see java.awt.Dialog.ModalExclusionType
 289      * @see #getModalExclusionType
 290      * @see #setModalExclusionType
 291      *
 292      * @since 1.6
 293      */
 294     Dialog.ModalExclusionType modalExclusionType;
 295 
 296     transient WindowListener windowListener;
 297     transient WindowStateListener windowStateListener;
 298     transient WindowFocusListener windowFocusListener;
 299 
 300     transient InputContext inputContext;
 301     private transient Object inputContextLock = new Object();
 302 
 303     /**
 304      * Unused. Maintained for serialization backward-compatibility.
 305      *
 306      * @serial
 307      * @since 1.2
 308      */
 309     private FocusManager focusMgr;
 310 
 311     /**
 312      * Indicates whether this Window can become the focused Window.
 313      *
 314      * @serial
 315      * @see #getFocusableWindowState
 316      * @see #setFocusableWindowState
 317      * @since 1.4
 318      */
 319     private boolean focusableWindowState = true;
 320 
 321     /**
 322      * Indicates whether this window should receive focus on
 323      * subsequently being shown (with a call to {@code setVisible(true)}), or
 324      * being moved to the front (with a call to {@code toFront()}).
 325      *
 326      * @serial
 327      * @see #setAutoRequestFocus
 328      * @see #isAutoRequestFocus
 329      * @since 1.7
 330      */
 331     private volatile boolean autoRequestFocus = true;
 332 
 333     /*
 334      * Indicates that this window is being shown. This flag is set to true at
 335      * the beginning of show() and to false at the end of show().
 336      *
 337      * @see #show()
 338      * @see Dialog#shouldBlock
 339      */
 340     transient boolean isInShow = false;
 341 
 342     /*
 343      * The opacity level of the window
 344      *
 345      * @serial
 346      * @see #setOpacity(float)
 347      * @see #getOpacity()
 348      * @since 1.7
 349      */
 350     private float opacity = 1.0f;
 351 
 352     /*
 353      * The shape assigned to this window. This field is set to {@code null} if
 354      * no shape is set (rectangular window).
 355      *
 356      * @serial
 357      * @see #getShape()
 358      * @see #setShape(Shape)
 359      * @since 1.7
 360      */
 361     private Shape shape = null;
 362 
 363     private static final String base = "win";
 364     private static int nameCounter = 0;
 365 
 366     /*
 367      * JDK 1.1 serialVersionUID
 368      */
 369     private static final long serialVersionUID = 4497834738069338734L;
 370 
 371     private static final PlatformLogger log = PlatformLogger.getLogger("java.awt.Window");
 372 
 373     private static final boolean locationByPlatformProp;
 374 
 375     transient boolean isTrayIconWindow = false;
 376 
 377     /**
 378      * These fields are initialized in the native peer code
 379      * or via AWTAccessor's WindowAccessor.
 380      */
 381     private transient volatile int securityWarningWidth = 0;
 382     private transient volatile int securityWarningHeight = 0;
 383 
 384     /**
 385      * These fields represent the desired location for the security
 386      * warning if this window is untrusted.
 387      * See com.sun.awt.SecurityWarning for more details.
 388      */
 389     private transient double securityWarningPointX = 2.0;
 390     private transient double securityWarningPointY = 0.0;
 391     private transient float securityWarningAlignmentX = RIGHT_ALIGNMENT;
 392     private transient float securityWarningAlignmentY = TOP_ALIGNMENT;
 393 
 394     static {
 395         /* ensure that the necessary native libraries are loaded */
 396         Toolkit.loadLibraries();
 397         if (!GraphicsEnvironment.isHeadless()) {
 398             initIDs();
 399         }
 400 
 401         String s = java.security.AccessController.doPrivileged(
 402             new GetPropertyAction("java.awt.syncLWRequests"));
 403         systemSyncLWRequests = (s != null && s.equals("true"));
 404         s = java.security.AccessController.doPrivileged(
 405             new GetPropertyAction("java.awt.Window.locationByPlatform"));
 406         locationByPlatformProp = (s != null && s.equals("true"));
 407     }
 408 
 409     /**
 410      * Initialize JNI field and method IDs for fields that may be
 411        accessed from C.
 412      */
 413     private static native void initIDs();
 414 
 415     /**
 416      * Constructs a new, initially invisible window in default size with the
 417      * specified <code>GraphicsConfiguration</code>.
 418      * <p>
 419      * If there is a security manager, this method first calls
 420      * the security manager's <code>checkTopLevelWindow</code>
 421      * method with <code>this</code>
 422      * as its argument to determine whether or not the window
 423      * must be displayed with a warning banner.
 424      *
 425      * @param gc the <code>GraphicsConfiguration</code> of the target screen
 426      *     device. If <code>gc</code> is <code>null</code>, the system default
 427      *     <code>GraphicsConfiguration</code> is assumed
 428      * @exception IllegalArgumentException if <code>gc</code>
 429      *    is not from a screen device
 430      * @exception HeadlessException when
 431      *     <code>GraphicsEnvironment.isHeadless()</code> returns <code>true</code>
 432      *
 433      * @see java.awt.GraphicsEnvironment#isHeadless
 434      * @see java.lang.SecurityManager#checkTopLevelWindow
 435      */
 436     Window(GraphicsConfiguration gc) {
 437         init(gc);
 438     }
 439 
 440     transient Object anchor = new Object();
 441     static class WindowDisposerRecord implements sun.java2d.DisposerRecord {
 442         final WeakReference<Window> owner;
 443         final WeakReference weakThis;
 444         final WeakReference<AppContext> context;
 445         WindowDisposerRecord(AppContext context, Window victim) {
 446             owner = new WeakReference<Window>(victim.getOwner());
 447             weakThis = victim.weakThis;
 448             this.context = new WeakReference<AppContext>(context);
 449         }
 450         public void dispose() {
 451             Window parent = owner.get();
 452             if (parent != null) {
 453                 parent.removeOwnedWindow(weakThis);
 454             }
 455             AppContext ac = context.get();
 456             if (null != ac) {
 457                 Window.removeFromWindowList(ac, weakThis);
 458             }
 459         }
 460     }
 461 
 462     private GraphicsConfiguration initGC(GraphicsConfiguration gc) {
 463         GraphicsEnvironment.checkHeadless();
 464 
 465         if (gc == null) {
 466             gc = GraphicsEnvironment.getLocalGraphicsEnvironment().
 467                 getDefaultScreenDevice().getDefaultConfiguration();
 468         }
 469         setGraphicsConfiguration(gc);
 470 
 471         return gc;
 472     }
 473 
 474     private void init(GraphicsConfiguration gc) {
 475         GraphicsEnvironment.checkHeadless();
 476 
 477         syncLWRequests = systemSyncLWRequests;
 478 
 479         weakThis = new WeakReference<Window>(this);
 480         addToWindowList();
 481 
 482         setWarningString();
 483         this.cursor = Cursor.getPredefinedCursor(Cursor.DEFAULT_CURSOR);
 484         this.visible = false;
 485 
 486         gc = initGC(gc);
 487 
 488         if (gc.getDevice().getType() !=
 489             GraphicsDevice.TYPE_RASTER_SCREEN) {
 490             throw new IllegalArgumentException("not a screen device");
 491         }
 492         setLayout(new BorderLayout());
 493 
 494         /* offset the initial location with the original of the screen */
 495         /* and any insets                                              */
 496         Rectangle screenBounds = gc.getBounds();
 497         Insets screenInsets = getToolkit().getScreenInsets(gc);
 498         int x = getX() + screenBounds.x + screenInsets.left;
 499         int y = getY() + screenBounds.y + screenInsets.top;
 500         if (x != this.x || y != this.y) {
 501             setLocation(x, y);
 502             /* reset after setLocation */
 503             setLocationByPlatform(locationByPlatformProp);
 504         }
 505 
 506         modalExclusionType = Dialog.ModalExclusionType.NO_EXCLUDE;
 507 
 508         SunToolkit.checkAndSetPolicy(this, false);
 509     }
 510 
 511     /**
 512      * Constructs a new, initially invisible window in the default size.
 513      *
 514      * <p>First, if there is a security manager, its
 515      * <code>checkTopLevelWindow</code>
 516      * method is called with <code>this</code>
 517      * as its argument
 518      * to see if it's ok to display the window without a warning banner.
 519      * If the default implementation of <code>checkTopLevelWindow</code>
 520      * is used (that is, that method is not overriden), then this results in
 521      * a call to the security manager's <code>checkPermission</code> method
 522      * with an <code>AWTPermission("showWindowWithoutWarningBanner")</code>
 523      * permission. It that method raises a SecurityException,
 524      * <code>checkTopLevelWindow</code> returns false, otherwise it
 525      * returns true. If it returns false, a warning banner is created.
 526      *
 527      * @exception HeadlessException when
 528      *     <code>GraphicsEnvironment.isHeadless()</code> returns <code>true</code>
 529      *
 530      * @see java.awt.GraphicsEnvironment#isHeadless
 531      * @see java.lang.SecurityManager#checkTopLevelWindow
 532      */
 533     Window() throws HeadlessException {
 534         GraphicsEnvironment.checkHeadless();
 535         init((GraphicsConfiguration)null);
 536     }
 537 
 538     /**
 539      * Constructs a new, initially invisible window with the specified
 540      * <code>Frame</code> as its owner. The window will not be focusable
 541      * unless its owner is showing on the screen.
 542      * <p>
 543      * If there is a security manager, this method first calls
 544      * the security manager's <code>checkTopLevelWindow</code>
 545      * method with <code>this</code>
 546      * as its argument to determine whether or not the window
 547      * must be displayed with a warning banner.
 548      *
 549      * @param owner the <code>Frame</code> to act as owner or <code>null</code>
 550      *    if this window has no owner
 551      * @exception IllegalArgumentException if the <code>owner</code>'s
 552      *    <code>GraphicsConfiguration</code> is not from a screen device
 553      * @exception HeadlessException when
 554      *    <code>GraphicsEnvironment.isHeadless</code> returns <code>true</code>
 555      *
 556      * @see java.awt.GraphicsEnvironment#isHeadless
 557      * @see java.lang.SecurityManager#checkTopLevelWindow
 558      * @see #isShowing
 559      */
 560     public Window(Frame owner) {
 561         this(owner == null ? (GraphicsConfiguration)null :
 562             owner.getGraphicsConfiguration());
 563         ownedInit(owner);
 564     }
 565 
 566     /**
 567      * Constructs a new, initially invisible window with the specified
 568      * <code>Window</code> as its owner. This window will not be focusable
 569      * unless its nearest owning <code>Frame</code> or <code>Dialog</code>
 570      * is showing on the screen.
 571      * <p>
 572      * If there is a security manager, this method first calls
 573      * the security manager's <code>checkTopLevelWindow</code>
 574      * method with <code>this</code>
 575      * as its argument to determine whether or not the window
 576      * must be displayed with a warning banner.
 577      *
 578      * @param owner the <code>Window</code> to act as owner or
 579      *     <code>null</code> if this window has no owner
 580      * @exception IllegalArgumentException if the <code>owner</code>'s
 581      *     <code>GraphicsConfiguration</code> is not from a screen device
 582      * @exception HeadlessException when
 583      *     <code>GraphicsEnvironment.isHeadless()</code> returns
 584      *     <code>true</code>
 585      *
 586      * @see       java.awt.GraphicsEnvironment#isHeadless
 587      * @see       java.lang.SecurityManager#checkTopLevelWindow
 588      * @see       #isShowing
 589      *
 590      * @since     1.2
 591      */
 592     public Window(Window owner) {
 593         this(owner == null ? (GraphicsConfiguration)null :
 594             owner.getGraphicsConfiguration());
 595         ownedInit(owner);
 596     }
 597 
 598     /**
 599      * Constructs a new, initially invisible window with the specified owner
 600      * <code>Window</code> and a <code>GraphicsConfiguration</code>
 601      * of a screen device. The Window will not be focusable unless
 602      * its nearest owning <code>Frame</code> or <code>Dialog</code>
 603      * is showing on the screen.
 604      * <p>
 605      * If there is a security manager, this method first calls
 606      * the security manager's <code>checkTopLevelWindow</code>
 607      * method with <code>this</code>
 608      * as its argument to determine whether or not the window
 609      * must be displayed with a warning banner.
 610      *
 611      * @param owner the window to act as owner or <code>null</code>
 612      *     if this window has no owner
 613      * @param gc the <code>GraphicsConfiguration</code> of the target
 614      *     screen device; if <code>gc</code> is <code>null</code>,
 615      *     the system default <code>GraphicsConfiguration</code> is assumed
 616      * @exception IllegalArgumentException if <code>gc</code>
 617      *     is not from a screen device
 618      * @exception HeadlessException when
 619      *     <code>GraphicsEnvironment.isHeadless()</code> returns
 620      *     <code>true</code>
 621      *
 622      * @see       java.awt.GraphicsEnvironment#isHeadless
 623      * @see       java.lang.SecurityManager#checkTopLevelWindow
 624      * @see       GraphicsConfiguration#getBounds
 625      * @see       #isShowing
 626      * @since     1.3
 627      */
 628     public Window(Window owner, GraphicsConfiguration gc) {
 629         this(gc);
 630         ownedInit(owner);
 631     }
 632 
 633     private void ownedInit(Window owner) {
 634         this.parent = owner;
 635         if (owner != null) {
 636             owner.addOwnedWindow(weakThis);
 637         }
 638 
 639         // Fix for 6758673: this call is moved here from init(gc), because
 640         // WindowDisposerRecord requires a proper value of parent field.
 641         Disposer.addRecord(anchor, new WindowDisposerRecord(appContext, this));
 642     }
 643 
 644     /**
 645      * Construct a name for this component.  Called by getName() when the
 646      * name is null.
 647      */
 648     String constructComponentName() {
 649         synchronized (Window.class) {
 650             return base + nameCounter++;
 651         }
 652     }
 653 
 654     /**
 655      * Returns the sequence of images to be displayed as the icon for this window.
 656      * <p>
 657      * This method returns a copy of the internally stored list, so all operations
 658      * on the returned object will not affect the window's behavior.
 659      *
 660      * @return    the copy of icon images' list for this window, or
 661      *            empty list if this window doesn't have icon images.
 662      * @see       #setIconImages
 663      * @see       #setIconImage(Image)
 664      * @since     1.6
 665      */
 666     public java.util.List<Image> getIconImages() {
 667         java.util.List<Image> icons = this.icons;
 668         if (icons == null || icons.size() == 0) {
 669             return new ArrayList<Image>();
 670         }
 671         return new ArrayList<Image>(icons);
 672     }
 673 
 674     /**
 675      * Sets the sequence of images to be displayed as the icon
 676      * for this window. Subsequent calls to {@code getIconImages} will
 677      * always return a copy of the {@code icons} list.
 678      * <p>
 679      * Depending on the platform capabilities one or several images
 680      * of different dimensions will be used as the window's icon.
 681      * <p>
 682      * The {@code icons} list is scanned for the images of most
 683      * appropriate dimensions from the beginning. If the list contains
 684      * several images of the same size, the first will be used.
 685      * <p>
 686      * Ownerless windows with no icon specified use platfrom-default icon.
 687      * The icon of an owned window may be inherited from the owner
 688      * unless explicitly overridden.
 689      * Setting the icon to {@code null} or empty list restores
 690      * the default behavior.
 691      * <p>
 692      * Note : Native windowing systems may use different images of differing
 693      * dimensions to represent a window, depending on the context (e.g.
 694      * window decoration, window list, taskbar, etc.). They could also use
 695      * just a single image for all contexts or no image at all.
 696      *
 697      * @param     icons the list of icon images to be displayed.
 698      * @see       #getIconImages()
 699      * @see       #setIconImage(Image)
 700      * @since     1.6
 701      */
 702     public synchronized void setIconImages(java.util.List<? extends Image> icons) {
 703         this.icons = (icons == null) ? new ArrayList<Image>() :
 704             new ArrayList<Image>(icons);
 705         WindowPeer peer = (WindowPeer)this.peer;
 706         if (peer != null) {
 707             peer.updateIconImages();
 708         }
 709         // Always send a property change event
 710         firePropertyChange("iconImage", null, null);
 711     }
 712 
 713     /**
 714      * Sets the image to be displayed as the icon for this window.
 715      * <p>
 716      * This method can be used instead of {@link #setIconImages setIconImages()}
 717      * to specify a single image as a window's icon.
 718      * <p>
 719      * The following statement:
 720      * <pre>
 721      *     setIconImage(image);
 722      * </pre>
 723      * is equivalent to:
 724      * <pre>
 725      *     ArrayList&lt;Image&gt; imageList = new ArrayList&lt;Image&gt;();
 726      *     imageList.add(image);
 727      *     setIconImages(imageList);
 728      * </pre>
 729      * <p>
 730      * Note : Native windowing systems may use different images of differing
 731      * dimensions to represent a window, depending on the context (e.g.
 732      * window decoration, window list, taskbar, etc.). They could also use
 733      * just a single image for all contexts or no image at all.
 734      *
 735      * @param     image the icon image to be displayed.
 736      * @see       #setIconImages
 737      * @see       #getIconImages()
 738      * @since     1.6
 739      */
 740     public void setIconImage(Image image) {
 741         ArrayList<Image> imageList = new ArrayList<Image>();
 742         if (image != null) {
 743             imageList.add(image);
 744         }
 745         setIconImages(imageList);
 746     }
 747 
 748     /**
 749      * Makes this Window displayable by creating the connection to its
 750      * native screen resource.
 751      * This method is called internally by the toolkit and should
 752      * not be called directly by programs.
 753      * @see Component#isDisplayable
 754      * @see Container#removeNotify
 755      * @since JDK1.0
 756      */
 757     public void addNotify() {
 758         synchronized (getTreeLock()) {
 759             Container parent = this.parent;
 760             if (parent != null && parent.getPeer() == null) {
 761                 parent.addNotify();
 762             }
 763             if (peer == null) {
 764                 peer = getToolkit().createWindow(this);
 765             }
 766             synchronized (allWindows) {
 767                 allWindows.add(this);
 768             }
 769             super.addNotify();
 770         }
 771     }
 772 
 773     /**
 774      * {@inheritDoc}
 775      */
 776     public void removeNotify() {
 777         synchronized (getTreeLock()) {
 778             synchronized (allWindows) {
 779                 allWindows.remove(this);
 780             }
 781             super.removeNotify();
 782         }
 783     }
 784 
 785     /**
 786      * Causes this Window to be sized to fit the preferred size
 787      * and layouts of its subcomponents. The resulting width and
 788      * height of the window are automatically enlarged if either
 789      * of dimensions is less than the minimum size as specified
 790      * by the previous call to the {@code setMinimumSize} method.
 791      * <p>
 792      * If the window and/or its owner are not displayable yet,
 793      * both of them are made displayable before calculating
 794      * the preferred size. The Window is validated after its
 795      * size is being calculated.
 796      *
 797      * @see Component#isDisplayable
 798      * @see #setMinimumSize
 799      */
 800     public void pack() {
 801         Container parent = this.parent;
 802         if (parent != null && parent.getPeer() == null) {
 803             parent.addNotify();
 804         }
 805         if (peer == null) {
 806             addNotify();
 807         }
 808         Dimension newSize = getPreferredSize();
 809         if (peer != null) {
 810             setClientSize(newSize.width, newSize.height);
 811         }
 812 
 813         if(beforeFirstShow) {
 814             isPacked = true;
 815         }
 816 
 817         validateUnconditionally();
 818     }
 819 
 820     /**
 821      * Sets the minimum size of this window to a constant
 822      * value.  Subsequent calls to {@code getMinimumSize}
 823      * will always return this value. If current window's
 824      * size is less than {@code minimumSize} the size of the
 825      * window is automatically enlarged to honor the minimum size.
 826      * <p>
 827      * If the {@code setSize} or {@code setBounds} methods
 828      * are called afterwards with a width or height less than
 829      * that was specified by the {@code setMinimumSize} method
 830      * the window is automatically enlarged to meet
 831      * the {@code minimumSize} value. The {@code minimumSize}
 832      * value also affects the behaviour of the {@code pack} method.
 833      * <p>
 834      * The default behavior is restored by setting the minimum size
 835      * parameter to the {@code null} value.
 836      * <p>
 837      * Resizing operation may be restricted if the user tries
 838      * to resize window below the {@code minimumSize} value.
 839      * This behaviour is platform-dependent.
 840      *
 841      * @param minimumSize the new minimum size of this window
 842      * @see Component#setMinimumSize
 843      * @see #getMinimumSize
 844      * @see #isMinimumSizeSet
 845      * @see #setSize(Dimension)
 846      * @see #pack
 847      * @since 1.6
 848      */
 849     public void setMinimumSize(Dimension minimumSize) {
 850         synchronized (getTreeLock()) {
 851             super.setMinimumSize(minimumSize);
 852             Dimension size = getSize();
 853             if (isMinimumSizeSet()) {
 854                 if (size.width < minimumSize.width || size.height < minimumSize.height) {
 855                     int nw = Math.max(width, minimumSize.width);
 856                     int nh = Math.max(height, minimumSize.height);
 857                     setSize(nw, nh);
 858                 }
 859             }
 860             if (peer != null) {
 861                 ((WindowPeer)peer).updateMinimumSize();
 862             }
 863         }
 864     }
 865 
 866     /**
 867      * {@inheritDoc}
 868      * <p>
 869      * The {@code d.width} and {@code d.height} values
 870      * are automatically enlarged if either is less than
 871      * the minimum size as specified by previous call to
 872      * {@code setMinimumSize}.
 873      * <p>
 874      * The method changes the geometry-related data. Therefore,
 875      * the native windowing system may ignore such requests, or it may modify
 876      * the requested data, so that the {@code Window} object is placed and sized
 877      * in a way that corresponds closely to the desktop settings.
 878      *
 879      * @see #getSize
 880      * @see #setBounds
 881      * @see #setMinimumSize
 882      * @since 1.6
 883      */
 884     public void setSize(Dimension d) {
 885         super.setSize(d);
 886     }
 887 
 888     /**
 889      * {@inheritDoc}
 890      * <p>
 891      * The {@code width} and {@code height} values
 892      * are automatically enlarged if either is less than
 893      * the minimum size as specified by previous call to
 894      * {@code setMinimumSize}.
 895      * <p>
 896      * The method changes the geometry-related data. Therefore,
 897      * the native windowing system may ignore such requests, or it may modify
 898      * the requested data, so that the {@code Window} object is placed and sized
 899      * in a way that corresponds closely to the desktop settings.
 900      *
 901      * @see #getSize
 902      * @see #setBounds
 903      * @see #setMinimumSize
 904      * @since 1.6
 905      */
 906     public void setSize(int width, int height) {
 907         super.setSize(width, height);
 908     }
 909 
 910     /**
 911      * {@inheritDoc}
 912      * <p>
 913      * The method changes the geometry-related data. Therefore,
 914      * the native windowing system may ignore such requests, or it may modify
 915      * the requested data, so that the {@code Window} object is placed and sized
 916      * in a way that corresponds closely to the desktop settings.
 917      */
 918     @Override
 919     public void setLocation(int x, int y) {
 920         super.setLocation(x, y);
 921     }
 922 
 923     /**
 924      * {@inheritDoc}
 925      * <p>
 926      * The method changes the geometry-related data. Therefore,
 927      * the native windowing system may ignore such requests, or it may modify
 928      * the requested data, so that the {@code Window} object is placed and sized
 929      * in a way that corresponds closely to the desktop settings.
 930      */
 931     @Override
 932     public void setLocation(Point p) {
 933         super.setLocation(p);
 934     }
 935 
 936     /**
 937      * @deprecated As of JDK version 1.1,
 938      * replaced by <code>setBounds(int, int, int, int)</code>.
 939      */
 940     @Deprecated
 941     public void reshape(int x, int y, int width, int height) {
 942         if (isMinimumSizeSet()) {
 943             Dimension minSize = getMinimumSize();
 944             if (width < minSize.width) {
 945                 width = minSize.width;
 946             }
 947             if (height < minSize.height) {
 948                 height = minSize.height;
 949             }
 950         }
 951         super.reshape(x, y, width, height);
 952     }
 953 
 954     void setClientSize(int w, int h) {
 955         synchronized (getTreeLock()) {
 956             setBoundsOp(ComponentPeer.SET_CLIENT_SIZE);
 957             setBounds(x, y, w, h);
 958         }
 959     }
 960 
 961     static private final AtomicBoolean
 962         beforeFirstWindowShown = new AtomicBoolean(true);
 963 
 964     final void closeSplashScreen() {
 965         if (isTrayIconWindow) {
 966             return;
 967         }
 968         if (beforeFirstWindowShown.getAndSet(false)) {
 969             // We don't use SplashScreen.getSplashScreen() to avoid instantiating
 970             // the object if it hasn't been requested by user code explicitly
 971             SunToolkit.closeSplashScreen();
 972             SplashScreen.markClosed();
 973         }
 974     }
 975 
 976     /**
 977      * Shows or hides this {@code Window} depending on the value of parameter
 978      * {@code b}.
 979      * <p>
 980      * If the method shows the window then the window is also made
 981      * focused under the following conditions:
 982      * <ul>
 983      * <li> The {@code Window} meets the requirements outlined in the
 984      *      {@link #isFocusableWindow} method.
 985      * <li> The {@code Window}'s {@code autoRequestFocus} property is of the {@code true} value.
 986      * <li> Native windowing system allows the {@code Window} to get focused.
 987      * </ul>
 988      * There is an exception for the second condition (the value of the
 989      * {@code autoRequestFocus} property). The property is not taken into account if the
 990      * window is a modal dialog, which blocks the currently focused window.
 991      * <p>
 992      * Developers must never assume that the window is the focused or active window
 993      * until it receives a WINDOW_GAINED_FOCUS or WINDOW_ACTIVATED event.
 994      * @param b  if {@code true}, makes the {@code Window} visible,
 995      * otherwise hides the {@code Window}.
 996      * If the {@code Window} and/or its owner
 997      * are not yet displayable, both are made displayable.  The
 998      * {@code Window} will be validated prior to being made visible.
 999      * If the {@code Window} is already visible, this will bring the
1000      * {@code Window} to the front.<p>
1001      * If {@code false}, hides this {@code Window}, its subcomponents, and all
1002      * of its owned children.
1003      * The {@code Window} and its subcomponents can be made visible again
1004      * with a call to {@code #setVisible(true)}.
1005      * @see java.awt.Component#isDisplayable
1006      * @see java.awt.Component#setVisible
1007      * @see java.awt.Window#toFront
1008      * @see java.awt.Window#dispose
1009      * @see java.awt.Window#setAutoRequestFocus
1010      * @see java.awt.Window#isFocusableWindow
1011      */
1012     public void setVisible(boolean b) {
1013         super.setVisible(b);
1014     }
1015 
1016     /**
1017      * Makes the Window visible. If the Window and/or its owner
1018      * are not yet displayable, both are made displayable.  The
1019      * Window will be validated prior to being made visible.
1020      * If the Window is already visible, this will bring the Window
1021      * to the front.
1022      * @see       Component#isDisplayable
1023      * @see       #toFront
1024      * @deprecated As of JDK version 1.5, replaced by
1025      * {@link #setVisible(boolean)}.
1026      */
1027     @Deprecated
1028     public void show() {
1029         if (peer == null) {
1030             addNotify();
1031         }
1032         validateUnconditionally();
1033 
1034         isInShow = true;
1035         if (visible) {
1036             toFront();
1037         } else {
1038             beforeFirstShow = false;
1039             closeSplashScreen();
1040             Dialog.checkShouldBeBlocked(this);
1041             super.show();
1042             locationByPlatform = false;
1043             for (int i = 0; i < ownedWindowList.size(); i++) {
1044                 Window child = ownedWindowList.elementAt(i).get();
1045                 if ((child != null) && child.showWithParent) {
1046                     child.show();
1047                     child.showWithParent = false;
1048                 }       // endif
1049             }   // endfor
1050             if (!isModalBlocked()) {
1051                 updateChildrenBlocking();
1052             } else {
1053                 // fix for 6532736: after this window is shown, its blocker
1054                 // should be raised to front
1055                 modalBlocker.toFront_NoClientCode();
1056             }
1057             if (this instanceof Frame || this instanceof Dialog) {
1058                 updateChildFocusableWindowState(this);
1059             }
1060         }
1061         isInShow = false;
1062 
1063         // If first time shown, generate WindowOpened event
1064         if ((state & OPENED) == 0) {
1065             postWindowEvent(WindowEvent.WINDOW_OPENED);
1066             state |= OPENED;
1067         }
1068     }
1069 
1070     static void updateChildFocusableWindowState(Window w) {
1071         if (w.getPeer() != null && w.isShowing()) {
1072             ((WindowPeer)w.getPeer()).updateFocusableWindowState();
1073         }
1074         for (int i = 0; i < w.ownedWindowList.size(); i++) {
1075             Window child = w.ownedWindowList.elementAt(i).get();
1076             if (child != null) {
1077                 updateChildFocusableWindowState(child);
1078             }
1079         }
1080     }
1081 
1082     synchronized void postWindowEvent(int id) {
1083         if (windowListener != null
1084             || (eventMask & AWTEvent.WINDOW_EVENT_MASK) != 0
1085             ||  Toolkit.enabledOnToolkit(AWTEvent.WINDOW_EVENT_MASK)) {
1086             WindowEvent e = new WindowEvent(this, id);
1087             Toolkit.getEventQueue().postEvent(e);
1088         }
1089     }
1090 
1091     /**
1092      * Hide this Window, its subcomponents, and all of its owned children.
1093      * The Window and its subcomponents can be made visible again
1094      * with a call to {@code show}.
1095      * </p>
1096      * @see #show
1097      * @see #dispose
1098      * @deprecated As of JDK version 1.5, replaced by
1099      * {@link #setVisible(boolean)}.
1100      */
1101     @Deprecated
1102     public void hide() {
1103         synchronized(ownedWindowList) {
1104             for (int i = 0; i < ownedWindowList.size(); i++) {
1105                 Window child = ownedWindowList.elementAt(i).get();
1106                 if ((child != null) && child.visible) {
1107                     child.hide();
1108                     child.showWithParent = true;
1109                 }
1110             }
1111         }
1112         if (isModalBlocked()) {
1113             modalBlocker.unblockWindow(this);
1114         }
1115         super.hide();
1116     }
1117 
1118     final void clearMostRecentFocusOwnerOnHide() {
1119         /* do nothing */
1120     }
1121 
1122     /**
1123      * Releases all of the native screen resources used by this
1124      * <code>Window</code>, its subcomponents, and all of its owned
1125      * children. That is, the resources for these <code>Component</code>s
1126      * will be destroyed, any memory they consume will be returned to the
1127      * OS, and they will be marked as undisplayable.
1128      * <p>
1129      * The <code>Window</code> and its subcomponents can be made displayable
1130      * again by rebuilding the native resources with a subsequent call to
1131      * <code>pack</code> or <code>show</code>. The states of the recreated
1132      * <code>Window</code> and its subcomponents will be identical to the
1133      * states of these objects at the point where the <code>Window</code>
1134      * was disposed (not accounting for additional modifications between
1135      * those actions).
1136      * <p>
1137      * <b>Note</b>: When the last displayable window
1138      * within the Java virtual machine (VM) is disposed of, the VM may
1139      * terminate.  See <a href="doc-files/AWTThreadIssues.html#Autoshutdown">
1140      * AWT Threading Issues</a> for more information.
1141      * @see Component#isDisplayable
1142      * @see #pack
1143      * @see #show
1144      */
1145     public void dispose() {
1146         doDispose();
1147     }
1148 
1149     /*
1150      * Fix for 4872170.
1151      * If dispose() is called on parent then its children have to be disposed as well
1152      * as reported in javadoc. So we need to implement this functionality even if a
1153      * child overrides dispose() in a wrong way without calling super.dispose().
1154      */
1155     void disposeImpl() {
1156         dispose();
1157         if (getPeer() != null) {
1158             doDispose();
1159         }
1160     }
1161 
1162     void doDispose() {
1163     class DisposeAction implements Runnable {
1164         public void run() {
1165             // Check if this window is the fullscreen window for the
1166             // device. Exit the fullscreen mode prior to disposing
1167             // of the window if that's the case.
1168             GraphicsDevice gd = getGraphicsConfiguration().getDevice();
1169             if (gd.getFullScreenWindow() == Window.this) {
1170                 gd.setFullScreenWindow(null);
1171             }
1172 
1173             Object[] ownedWindowArray;
1174             synchronized(ownedWindowList) {
1175                 ownedWindowArray = new Object[ownedWindowList.size()];
1176                 ownedWindowList.copyInto(ownedWindowArray);
1177             }
1178             for (int i = 0; i < ownedWindowArray.length; i++) {
1179                 Window child = (Window) (((WeakReference)
1180                                (ownedWindowArray[i])).get());
1181                 if (child != null) {
1182                     child.disposeImpl();
1183                 }
1184             }
1185             hide();
1186             beforeFirstShow = true;
1187             removeNotify();
1188             synchronized (inputContextLock) {
1189                 if (inputContext != null) {
1190                     inputContext.dispose();
1191                     inputContext = null;
1192                 }
1193             }
1194             clearCurrentFocusCycleRootOnHide();
1195         }
1196     }
1197         DisposeAction action = new DisposeAction();
1198         if (EventQueue.isDispatchThread()) {
1199             action.run();
1200         }
1201         else {
1202             try {
1203                 EventQueue.invokeAndWait(action);
1204             }
1205             catch (InterruptedException e) {
1206                 System.err.println("Disposal was interrupted:");
1207                 e.printStackTrace();
1208             }
1209             catch (InvocationTargetException e) {
1210                 System.err.println("Exception during disposal:");
1211                 e.printStackTrace();
1212             }
1213         }
1214         // Execute outside the Runnable because postWindowEvent is
1215         // synchronized on (this). We don't need to synchronize the call
1216         // on the EventQueue anyways.
1217         postWindowEvent(WindowEvent.WINDOW_CLOSED);
1218     }
1219 
1220     /*
1221      * Should only be called while holding the tree lock.
1222      * It's overridden here because parent == owner in Window,
1223      * and we shouldn't adjust counter on owner
1224      */
1225     void adjustListeningChildrenOnParent(long mask, int num) {
1226     }
1227 
1228     // Should only be called while holding tree lock
1229     void adjustDecendantsOnParent(int num) {
1230         // do nothing since parent == owner and we shouldn't
1231         // ajust counter on owner
1232     }
1233 
1234     /**
1235      * If this Window is visible, brings this Window to the front and may make
1236      * it the focused Window.
1237      * <p>
1238      * Places this Window at the top of the stacking order and shows it in
1239      * front of any other Windows in this VM. No action will take place if this
1240      * Window is not visible. Some platforms do not allow Windows which own
1241      * other Windows to appear on top of those owned Windows. Some platforms
1242      * may not permit this VM to place its Windows above windows of native
1243      * applications, or Windows of other VMs. This permission may depend on
1244      * whether a Window in this VM is already focused. Every attempt will be
1245      * made to move this Window as high as possible in the stacking order;
1246      * however, developers should not assume that this method will move this
1247      * Window above all other windows in every situation.
1248      * <p>
1249      * Developers must never assume that this Window is the focused or active
1250      * Window until this Window receives a WINDOW_GAINED_FOCUS or WINDOW_ACTIVATED
1251      * event. On platforms where the top-most window is the focused window, this
1252      * method will <b>probably</b> focus this Window (if it is not already focused)
1253      * under the following conditions:
1254      * <ul>
1255      * <li> The window meets the requirements outlined in the
1256      *      {@link #isFocusableWindow} method.
1257      * <li> The window's property {@code autoRequestFocus} is of the
1258      *      {@code true} value.
1259      * <li> Native windowing system allows the window to get focused.
1260      * </ul>
1261      * On platforms where the stacking order does not typically affect the focused
1262      * window, this method will <b>probably</b> leave the focused and active
1263      * Windows unchanged.
1264      * <p>
1265      * If this method causes this Window to be focused, and this Window is a
1266      * Frame or a Dialog, it will also become activated. If this Window is
1267      * focused, but it is not a Frame or a Dialog, then the first Frame or
1268      * Dialog that is an owner of this Window will be activated.
1269      * <p>
1270      * If this window is blocked by modal dialog, then the blocking dialog
1271      * is brought to the front and remains above the blocked window.
1272      *
1273      * @see       #toBack
1274      * @see       #setAutoRequestFocus
1275      * @see       #isFocusableWindow
1276      */
1277     public void toFront() {
1278         toFront_NoClientCode();
1279     }
1280 
1281     // This functionality is implemented in a final package-private method
1282     // to insure that it cannot be overridden by client subclasses.
1283     final void toFront_NoClientCode() {
1284         if (visible) {
1285             WindowPeer peer = (WindowPeer)this.peer;
1286             if (peer != null) {
1287                 peer.toFront();
1288             }
1289             if (isModalBlocked()) {
1290                 modalBlocker.toFront_NoClientCode();
1291             }
1292         }
1293     }
1294 
1295     /**
1296      * If this Window is visible, sends this Window to the back and may cause
1297      * it to lose focus or activation if it is the focused or active Window.
1298      * <p>
1299      * Places this Window at the bottom of the stacking order and shows it
1300      * behind any other Windows in this VM. No action will take place is this
1301      * Window is not visible. Some platforms do not allow Windows which are
1302      * owned by other Windows to appear below their owners. Every attempt will
1303      * be made to move this Window as low as possible in the stacking order;
1304      * however, developers should not assume that this method will move this
1305      * Window below all other windows in every situation.
1306      * <p>
1307      * Because of variations in native windowing systems, no guarantees about
1308      * changes to the focused and active Windows can be made. Developers must
1309      * never assume that this Window is no longer the focused or active Window
1310      * until this Window receives a WINDOW_LOST_FOCUS or WINDOW_DEACTIVATED
1311      * event. On platforms where the top-most window is the focused window,
1312      * this method will <b>probably</b> cause this Window to lose focus. In
1313      * that case, the next highest, focusable Window in this VM will receive
1314      * focus. On platforms where the stacking order does not typically affect
1315      * the focused window, this method will <b>probably</b> leave the focused
1316      * and active Windows unchanged.
1317      *
1318      * @see       #toFront
1319      */
1320     public void toBack() {
1321         toBack_NoClientCode();
1322     }
1323 
1324     // This functionality is implemented in a final package-private method
1325     // to insure that it cannot be overridden by client subclasses.
1326     final void toBack_NoClientCode() {
1327         if(isAlwaysOnTop()) {
1328             try {
1329                 setAlwaysOnTop(false);
1330             }catch(SecurityException e) {
1331             }
1332         }
1333         if (visible) {
1334             WindowPeer peer = (WindowPeer)this.peer;
1335             if (peer != null) {
1336                 peer.toBack();
1337             }
1338         }
1339     }
1340 
1341     /**
1342      * Returns the toolkit of this frame.
1343      * @return    the toolkit of this window.
1344      * @see       Toolkit
1345      * @see       Toolkit#getDefaultToolkit
1346      * @see       Component#getToolkit
1347      */
1348     public Toolkit getToolkit() {
1349         return Toolkit.getDefaultToolkit();
1350     }
1351 
1352     /**
1353      * Gets the warning string that is displayed with this window.
1354      * If this window is insecure, the warning string is displayed
1355      * somewhere in the visible area of the window. A window is
1356      * insecure if there is a security manager, and the security
1357      * manager's <code>checkTopLevelWindow</code> method returns
1358      * <code>false</code> when this window is passed to it as an
1359      * argument.
1360      * <p>
1361      * If the window is secure, then <code>getWarningString</code>
1362      * returns <code>null</code>. If the window is insecure, this
1363      * method checks for the system property
1364      * <code>awt.appletWarning</code>
1365      * and returns the string value of that property.
1366      * @return    the warning string for this window.
1367      * @see       java.lang.SecurityManager#checkTopLevelWindow(java.lang.Object)
1368      */
1369     public final String getWarningString() {
1370         return warningString;
1371     }
1372 
1373     private void setWarningString() {
1374         warningString = null;
1375         SecurityManager sm = System.getSecurityManager();
1376         if (sm != null) {
1377             if (!sm.checkTopLevelWindow(this)) {
1378                 // make sure the privileged action is only
1379                 // for getting the property! We don't want the
1380                 // above checkTopLevelWindow call to always succeed!
1381                 warningString = AccessController.doPrivileged(
1382                       new GetPropertyAction("awt.appletWarning",
1383                                             "Java Applet Window"));
1384             }
1385         }
1386     }
1387 
1388     /**
1389      * Gets the <code>Locale</code> object that is associated
1390      * with this window, if the locale has been set.
1391      * If no locale has been set, then the default locale
1392      * is returned.
1393      * @return    the locale that is set for this window.
1394      * @see       java.util.Locale
1395      * @since     JDK1.1
1396      */
1397     public Locale getLocale() {
1398       if (this.locale == null) {
1399         return Locale.getDefault();
1400       }
1401       return this.locale;
1402     }
1403 
1404     /**
1405      * Gets the input context for this window. A window always has an input context,
1406      * which is shared by subcomponents unless they create and set their own.
1407      * @see Component#getInputContext
1408      * @since 1.2
1409      */
1410     public InputContext getInputContext() {
1411         synchronized (inputContextLock) {
1412             if (inputContext == null) {
1413                 inputContext = InputContext.getInstance();
1414             }
1415         }
1416         return inputContext;
1417     }
1418 
1419     /**
1420      * Set the cursor image to a specified cursor.
1421      * <p>
1422      * The method may have no visual effect if the Java platform
1423      * implementation and/or the native system do not support
1424      * changing the mouse cursor shape.
1425      * @param     cursor One of the constants defined
1426      *            by the <code>Cursor</code> class. If this parameter is null
1427      *            then the cursor for this window will be set to the type
1428      *            Cursor.DEFAULT_CURSOR.
1429      * @see       Component#getCursor
1430      * @see       Cursor
1431      * @since     JDK1.1
1432      */
1433     public void setCursor(Cursor cursor) {
1434         if (cursor == null) {
1435             cursor = Cursor.getPredefinedCursor(Cursor.DEFAULT_CURSOR);
1436         }
1437         super.setCursor(cursor);
1438     }
1439 
1440     /**
1441      * Returns the owner of this window.
1442      * @since 1.2
1443      */
1444     public Window getOwner() {
1445         return getOwner_NoClientCode();
1446     }
1447     final Window getOwner_NoClientCode() {
1448         return (Window)parent;
1449     }
1450 
1451     /**
1452      * Return an array containing all the windows this
1453      * window currently owns.
1454      * @since 1.2
1455      */
1456     public Window[] getOwnedWindows() {
1457         return getOwnedWindows_NoClientCode();
1458     }
1459     final Window[] getOwnedWindows_NoClientCode() {
1460         Window realCopy[];
1461 
1462         synchronized(ownedWindowList) {
1463             // Recall that ownedWindowList is actually a Vector of
1464             // WeakReferences and calling get() on one of these references
1465             // may return null. Make two arrays-- one the size of the
1466             // Vector (fullCopy with size fullSize), and one the size of
1467             // all non-null get()s (realCopy with size realSize).
1468             int fullSize = ownedWindowList.size();
1469             int realSize = 0;
1470             Window fullCopy[] = new Window[fullSize];
1471 
1472             for (int i = 0; i < fullSize; i++) {
1473                 fullCopy[realSize] = ownedWindowList.elementAt(i).get();
1474 
1475                 if (fullCopy[realSize] != null) {
1476                     realSize++;
1477                 }
1478             }
1479 
1480             if (fullSize != realSize) {
1481                 realCopy = Arrays.copyOf(fullCopy, realSize);
1482             } else {
1483                 realCopy = fullCopy;
1484             }
1485         }
1486 
1487         return realCopy;
1488     }
1489 
1490     boolean isModalBlocked() {
1491         return modalBlocker != null;
1492     }
1493 
1494     void setModalBlocked(Dialog blocker, boolean blocked, boolean peerCall) {
1495         this.modalBlocker = blocked ? blocker : null;
1496         if (peerCall) {
1497             WindowPeer peer = (WindowPeer)this.peer;
1498             if (peer != null) {
1499                 peer.setModalBlocked(blocker, blocked);
1500             }
1501         }
1502     }
1503 
1504     Dialog getModalBlocker() {
1505         return modalBlocker;
1506     }
1507 
1508     /*
1509      * Returns a list of all displayable Windows, i. e. all the
1510      * Windows which peer is not null.
1511      *
1512      * @see #addNotify
1513      * @see #removeNotify
1514      */
1515     static IdentityArrayList<Window> getAllWindows() {
1516         synchronized (allWindows) {
1517             IdentityArrayList<Window> v = new IdentityArrayList<Window>();
1518             v.addAll(allWindows);
1519             return v;
1520         }
1521     }
1522 
1523     static IdentityArrayList<Window> getAllUnblockedWindows() {
1524         synchronized (allWindows) {
1525             IdentityArrayList<Window> unblocked = new IdentityArrayList<Window>();
1526             for (int i = 0; i < allWindows.size(); i++) {
1527                 Window w = allWindows.get(i);
1528                 if (!w.isModalBlocked()) {
1529                     unblocked.add(w);
1530                 }
1531             }
1532             return unblocked;
1533         }
1534     }
1535 
1536     private static Window[] getWindows(AppContext appContext) {
1537         synchronized (Window.class) {
1538             Window realCopy[];
1539             Vector<WeakReference<Window>> windowList =
1540                 (Vector<WeakReference<Window>>)appContext.get(Window.class);
1541             if (windowList != null) {
1542                 int fullSize = windowList.size();
1543                 int realSize = 0;
1544                 Window fullCopy[] = new Window[fullSize];
1545                 for (int i = 0; i < fullSize; i++) {
1546                     Window w = windowList.get(i).get();
1547                     if (w != null) {
1548                         fullCopy[realSize++] = w;
1549                     }
1550                 }
1551                 if (fullSize != realSize) {
1552                     realCopy = Arrays.copyOf(fullCopy, realSize);
1553                 } else {
1554                     realCopy = fullCopy;
1555                 }
1556             } else {
1557                 realCopy = new Window[0];
1558             }
1559             return realCopy;
1560         }
1561     }
1562 
1563     /**
1564      * Returns an array of all {@code Window}s, both owned and ownerless,
1565      * created by this application.
1566      * If called from an applet, the array includes only the {@code Window}s
1567      * accessible by that applet.
1568      * <p>
1569      * <b>Warning:</b> this method may return system created windows, such
1570      * as a print dialog. Applications should not assume the existence of
1571      * these dialogs, nor should an application assume anything about these
1572      * dialogs such as component positions, <code>LayoutManager</code>s
1573      * or serialization.
1574      *
1575      * @see Frame#getFrames
1576      * @see Window#getOwnerlessWindows
1577      *
1578      * @since 1.6
1579      */
1580     public static Window[] getWindows() {
1581         return getWindows(AppContext.getAppContext());
1582     }
1583 
1584     /**
1585      * Returns an array of all {@code Window}s created by this application
1586      * that have no owner. They include {@code Frame}s and ownerless
1587      * {@code Dialog}s and {@code Window}s.
1588      * If called from an applet, the array includes only the {@code Window}s
1589      * accessible by that applet.
1590      * <p>
1591      * <b>Warning:</b> this method may return system created windows, such
1592      * as a print dialog. Applications should not assume the existence of
1593      * these dialogs, nor should an application assume anything about these
1594      * dialogs such as component positions, <code>LayoutManager</code>s
1595      * or serialization.
1596      *
1597      * @see Frame#getFrames
1598      * @see Window#getWindows()
1599      *
1600      * @since 1.6
1601      */
1602     public static Window[] getOwnerlessWindows() {
1603         Window[] allWindows = Window.getWindows();
1604 
1605         int ownerlessCount = 0;
1606         for (Window w : allWindows) {
1607             if (w.getOwner() == null) {
1608                 ownerlessCount++;
1609             }
1610         }
1611 
1612         Window[] ownerless = new Window[ownerlessCount];
1613         int c = 0;
1614         for (Window w : allWindows) {
1615             if (w.getOwner() == null) {
1616                 ownerless[c++] = w;
1617             }
1618         }
1619 
1620         return ownerless;
1621     }
1622 
1623     Window getDocumentRoot() {
1624         synchronized (getTreeLock()) {
1625             Window w = this;
1626             while (w.getOwner() != null) {
1627                 w = w.getOwner();
1628             }
1629             return w;
1630         }
1631     }
1632 
1633     /**
1634      * Specifies the modal exclusion type for this window. If a window is modal
1635      * excluded, it is not blocked by some modal dialogs. See {@link
1636      * java.awt.Dialog.ModalExclusionType Dialog.ModalExclusionType} for
1637      * possible modal exclusion types.
1638      * <p>
1639      * If the given type is not supported, <code>NO_EXCLUDE</code> is used.
1640      * <p>
1641      * Note: changing the modal exclusion type for a visible window may have no
1642      * effect until it is hidden and then shown again.
1643      *
1644      * @param exclusionType the modal exclusion type for this window; a <code>null</code>
1645      *     value is equivivalent to {@link Dialog.ModalExclusionType#NO_EXCLUDE
1646      *     NO_EXCLUDE}
1647      * @throws SecurityException if the calling thread does not have permission
1648      *     to set the modal exclusion property to the window with the given
1649      *     <code>exclusionType</code>
1650      * @see java.awt.Dialog.ModalExclusionType
1651      * @see java.awt.Window#getModalExclusionType
1652      * @see java.awt.Toolkit#isModalExclusionTypeSupported
1653      *
1654      * @since 1.6
1655      */
1656     public void setModalExclusionType(Dialog.ModalExclusionType exclusionType) {
1657         if (exclusionType == null) {
1658             exclusionType = Dialog.ModalExclusionType.NO_EXCLUDE;
1659         }
1660         if (!Toolkit.getDefaultToolkit().isModalExclusionTypeSupported(exclusionType)) {
1661             exclusionType = Dialog.ModalExclusionType.NO_EXCLUDE;
1662         }
1663         if (modalExclusionType == exclusionType) {
1664             return;
1665         }
1666         if (exclusionType == Dialog.ModalExclusionType.TOOLKIT_EXCLUDE) {
1667             SecurityManager sm = System.getSecurityManager();
1668             if (sm != null) {
1669                 sm.checkPermission(SecurityConstants.AWT.TOOLKIT_MODALITY_PERMISSION);
1670             }
1671         }
1672         modalExclusionType = exclusionType;
1673 
1674         // if we want on-fly changes, we need to uncomment the lines below
1675         //   and override the method in Dialog to use modalShow() instead
1676         //   of updateChildrenBlocking()
1677  /*
1678         if (isModalBlocked()) {
1679             modalBlocker.unblockWindow(this);
1680         }
1681         Dialog.checkShouldBeBlocked(this);
1682         updateChildrenBlocking();
1683  */
1684     }
1685 
1686     /**
1687      * Returns the modal exclusion type of this window.
1688      *
1689      * @return the modal exclusion type of this window
1690      *
1691      * @see java.awt.Dialog.ModalExclusionType
1692      * @see java.awt.Window#setModalExclusionType
1693      *
1694      * @since 1.6
1695      */
1696     public Dialog.ModalExclusionType getModalExclusionType() {
1697         return modalExclusionType;
1698     }
1699 
1700     boolean isModalExcluded(Dialog.ModalExclusionType exclusionType) {
1701         if ((modalExclusionType != null) &&
1702             modalExclusionType.compareTo(exclusionType) >= 0)
1703         {
1704             return true;
1705         }
1706         Window owner = getOwner_NoClientCode();
1707         return (owner != null) && owner.isModalExcluded(exclusionType);
1708     }
1709 
1710     void updateChildrenBlocking() {
1711         Vector<Window> childHierarchy = new Vector<Window>();
1712         Window[] ownedWindows = getOwnedWindows();
1713         for (int i = 0; i < ownedWindows.length; i++) {
1714             childHierarchy.add(ownedWindows[i]);
1715         }
1716         int k = 0;
1717         while (k < childHierarchy.size()) {
1718             Window w = childHierarchy.get(k);
1719             if (w.isVisible()) {
1720                 if (w.isModalBlocked()) {
1721                     Dialog blocker = w.getModalBlocker();
1722                     blocker.unblockWindow(w);
1723                 }
1724                 Dialog.checkShouldBeBlocked(w);
1725                 Window[] wOwned = w.getOwnedWindows();
1726                 for (int j = 0; j < wOwned.length; j++) {
1727                     childHierarchy.add(wOwned[j]);
1728                 }
1729             }
1730             k++;
1731         }
1732     }
1733 
1734     /**
1735      * Adds the specified window listener to receive window events from
1736      * this window.
1737      * If l is null, no exception is thrown and no action is performed.
1738      * <p>Refer to <a href="doc-files/AWTThreadIssues.html#ListenersThreads"
1739      * >AWT Threading Issues</a> for details on AWT's threading model.
1740      *
1741      * @param   l the window listener
1742      * @see #removeWindowListener
1743      * @see #getWindowListeners
1744      */
1745     public synchronized void addWindowListener(WindowListener l) {
1746         if (l == null) {
1747             return;
1748         }
1749         newEventsOnly = true;
1750         windowListener = AWTEventMulticaster.add(windowListener, l);
1751     }
1752 
1753     /**
1754      * Adds the specified window state listener to receive window
1755      * events from this window.  If <code>l</code> is <code>null</code>,
1756      * no exception is thrown and no action is performed.
1757      * <p>Refer to <a href="doc-files/AWTThreadIssues.html#ListenersThreads"
1758      * >AWT Threading Issues</a> for details on AWT's threading model.
1759      *
1760      * @param   l the window state listener
1761      * @see #removeWindowStateListener
1762      * @see #getWindowStateListeners
1763      * @since 1.4
1764      */
1765     public synchronized void addWindowStateListener(WindowStateListener l) {
1766         if (l == null) {
1767             return;
1768         }
1769         windowStateListener = AWTEventMulticaster.add(windowStateListener, l);
1770         newEventsOnly = true;
1771     }
1772 
1773     /**
1774      * Adds the specified window focus listener to receive window events
1775      * from this window.
1776      * If l is null, no exception is thrown and no action is performed.
1777      * <p>Refer to <a href="doc-files/AWTThreadIssues.html#ListenersThreads"
1778      * >AWT Threading Issues</a> for details on AWT's threading model.
1779      *
1780      * @param   l the window focus listener
1781      * @see #removeWindowFocusListener
1782      * @see #getWindowFocusListeners
1783      * @since 1.4
1784      */
1785     public synchronized void addWindowFocusListener(WindowFocusListener l) {
1786         if (l == null) {
1787             return;
1788         }
1789         windowFocusListener = AWTEventMulticaster.add(windowFocusListener, l);
1790         newEventsOnly = true;
1791     }
1792 
1793     /**
1794      * Removes the specified window listener so that it no longer
1795      * receives window events from this window.
1796      * If l is null, no exception is thrown and no action is performed.
1797      * <p>Refer to <a href="doc-files/AWTThreadIssues.html#ListenersThreads"
1798      * >AWT Threading Issues</a> for details on AWT's threading model.
1799      *
1800      * @param   l the window listener
1801      * @see #addWindowListener
1802      * @see #getWindowListeners
1803      */
1804     public synchronized void removeWindowListener(WindowListener l) {
1805         if (l == null) {
1806             return;
1807         }
1808         windowListener = AWTEventMulticaster.remove(windowListener, l);
1809     }
1810 
1811     /**
1812      * Removes the specified window state listener so that it no
1813      * longer receives window events from this window.  If
1814      * <code>l</code> is <code>null</code>, no exception is thrown and
1815      * no action is performed.
1816      * <p>Refer to <a href="doc-files/AWTThreadIssues.html#ListenersThreads"
1817      * >AWT Threading Issues</a> for details on AWT's threading model.
1818      *
1819      * @param   l the window state listener
1820      * @see #addWindowStateListener
1821      * @see #getWindowStateListeners
1822      * @since 1.4
1823      */
1824     public synchronized void removeWindowStateListener(WindowStateListener l) {
1825         if (l == null) {
1826             return;
1827         }
1828         windowStateListener = AWTEventMulticaster.remove(windowStateListener, l);
1829     }
1830 
1831     /**
1832      * Removes the specified window focus listener so that it no longer
1833      * receives window events from this window.
1834      * If l is null, no exception is thrown and no action is performed.
1835      * <p>Refer to <a href="doc-files/AWTThreadIssues.html#ListenersThreads"
1836      * >AWT Threading Issues</a> for details on AWT's threading model.
1837      *
1838      * @param   l the window focus listener
1839      * @see #addWindowFocusListener
1840      * @see #getWindowFocusListeners
1841      * @since 1.4
1842      */
1843     public synchronized void removeWindowFocusListener(WindowFocusListener l) {
1844         if (l == null) {
1845             return;
1846         }
1847         windowFocusListener = AWTEventMulticaster.remove(windowFocusListener, l);
1848     }
1849 
1850     /**
1851      * Returns an array of all the window listeners
1852      * registered on this window.
1853      *
1854      * @return all of this window's <code>WindowListener</code>s
1855      *         or an empty array if no window
1856      *         listeners are currently registered
1857      *
1858      * @see #addWindowListener
1859      * @see #removeWindowListener
1860      * @since 1.4
1861      */
1862     public synchronized WindowListener[] getWindowListeners() {
1863         return (WindowListener[])(getListeners(WindowListener.class));
1864     }
1865 
1866     /**
1867      * Returns an array of all the window focus listeners
1868      * registered on this window.
1869      *
1870      * @return all of this window's <code>WindowFocusListener</code>s
1871      *         or an empty array if no window focus
1872      *         listeners are currently registered
1873      *
1874      * @see #addWindowFocusListener
1875      * @see #removeWindowFocusListener
1876      * @since 1.4
1877      */
1878     public synchronized WindowFocusListener[] getWindowFocusListeners() {
1879         return (WindowFocusListener[])(getListeners(WindowFocusListener.class));
1880     }
1881 
1882     /**
1883      * Returns an array of all the window state listeners
1884      * registered on this window.
1885      *
1886      * @return all of this window's <code>WindowStateListener</code>s
1887      *         or an empty array if no window state
1888      *         listeners are currently registered
1889      *
1890      * @see #addWindowStateListener
1891      * @see #removeWindowStateListener
1892      * @since 1.4
1893      */
1894     public synchronized WindowStateListener[] getWindowStateListeners() {
1895         return (WindowStateListener[])(getListeners(WindowStateListener.class));
1896     }
1897 
1898 
1899     /**
1900      * Returns an array of all the objects currently registered
1901      * as <code><em>Foo</em>Listener</code>s
1902      * upon this <code>Window</code>.
1903      * <code><em>Foo</em>Listener</code>s are registered using the
1904      * <code>add<em>Foo</em>Listener</code> method.
1905      *
1906      * <p>
1907      *
1908      * You can specify the <code>listenerType</code> argument
1909      * with a class literal, such as
1910      * <code><em>Foo</em>Listener.class</code>.
1911      * For example, you can query a
1912      * <code>Window</code> <code>w</code>
1913      * for its window listeners with the following code:
1914      *
1915      * <pre>WindowListener[] wls = (WindowListener[])(w.getListeners(WindowListener.class));</pre>
1916      *
1917      * If no such listeners exist, this method returns an empty array.
1918      *
1919      * @param listenerType the type of listeners requested; this parameter
1920      *          should specify an interface that descends from
1921      *          <code>java.util.EventListener</code>
1922      * @return an array of all objects registered as
1923      *          <code><em>Foo</em>Listener</code>s on this window,
1924      *          or an empty array if no such
1925      *          listeners have been added
1926      * @exception ClassCastException if <code>listenerType</code>
1927      *          doesn't specify a class or interface that implements
1928      *          <code>java.util.EventListener</code>
1929      * @exception NullPointerException if {@code listenerType} is {@code null}
1930      *
1931      * @see #getWindowListeners
1932      * @since 1.3
1933      */
1934     public <T extends EventListener> T[] getListeners(Class<T> listenerType) {
1935         EventListener l = null;
1936         if (listenerType == WindowFocusListener.class) {
1937             l = windowFocusListener;
1938         } else if (listenerType == WindowStateListener.class) {
1939             l = windowStateListener;
1940         } else if (listenerType == WindowListener.class) {
1941             l = windowListener;
1942         } else {
1943             return super.getListeners(listenerType);
1944         }
1945         return AWTEventMulticaster.getListeners(l, listenerType);
1946     }
1947 
1948     // REMIND: remove when filtering is handled at lower level
1949     boolean eventEnabled(AWTEvent e) {
1950         switch(e.id) {
1951           case WindowEvent.WINDOW_OPENED:
1952           case WindowEvent.WINDOW_CLOSING:
1953           case WindowEvent.WINDOW_CLOSED:
1954           case WindowEvent.WINDOW_ICONIFIED:
1955           case WindowEvent.WINDOW_DEICONIFIED:
1956           case WindowEvent.WINDOW_ACTIVATED:
1957           case WindowEvent.WINDOW_DEACTIVATED:
1958             if ((eventMask & AWTEvent.WINDOW_EVENT_MASK) != 0 ||
1959                 windowListener != null) {
1960                 return true;
1961             }
1962             return false;
1963           case WindowEvent.WINDOW_GAINED_FOCUS:
1964           case WindowEvent.WINDOW_LOST_FOCUS:
1965             if ((eventMask & AWTEvent.WINDOW_FOCUS_EVENT_MASK) != 0 ||
1966                 windowFocusListener != null) {
1967                 return true;
1968             }
1969             return false;
1970           case WindowEvent.WINDOW_STATE_CHANGED:
1971             if ((eventMask & AWTEvent.WINDOW_STATE_EVENT_MASK) != 0 ||
1972                 windowStateListener != null) {
1973                 return true;
1974             }
1975             return false;
1976           default:
1977             break;
1978         }
1979         return super.eventEnabled(e);
1980     }
1981 
1982     /**
1983      * Processes events on this window. If the event is an
1984      * <code>WindowEvent</code>, it invokes the
1985      * <code>processWindowEvent</code> method, else it invokes its
1986      * superclass's <code>processEvent</code>.
1987      * <p>Note that if the event parameter is <code>null</code>
1988      * the behavior is unspecified and may result in an
1989      * exception.
1990      *
1991      * @param e the event
1992      */
1993     protected void processEvent(AWTEvent e) {
1994         if (e instanceof WindowEvent) {
1995             switch (e.getID()) {
1996                 case WindowEvent.WINDOW_OPENED:
1997                 case WindowEvent.WINDOW_CLOSING:
1998                 case WindowEvent.WINDOW_CLOSED:
1999                 case WindowEvent.WINDOW_ICONIFIED:
2000                 case WindowEvent.WINDOW_DEICONIFIED:
2001                 case WindowEvent.WINDOW_ACTIVATED:
2002                 case WindowEvent.WINDOW_DEACTIVATED:
2003                     processWindowEvent((WindowEvent)e);
2004                     break;
2005                 case WindowEvent.WINDOW_GAINED_FOCUS:
2006                 case WindowEvent.WINDOW_LOST_FOCUS:
2007                     processWindowFocusEvent((WindowEvent)e);
2008                     break;
2009                 case WindowEvent.WINDOW_STATE_CHANGED:
2010                     processWindowStateEvent((WindowEvent)e);
2011                 default:
2012                     break;
2013             }
2014             return;
2015         }
2016         super.processEvent(e);
2017     }
2018 
2019     /**
2020      * Processes window events occurring on this window by
2021      * dispatching them to any registered WindowListener objects.
2022      * NOTE: This method will not be called unless window events
2023      * are enabled for this component; this happens when one of the
2024      * following occurs:
2025      * <ul>
2026      * <li>A WindowListener object is registered via
2027      *     <code>addWindowListener</code>
2028      * <li>Window events are enabled via <code>enableEvents</code>
2029      * </ul>
2030      * <p>Note that if the event parameter is <code>null</code>
2031      * the behavior is unspecified and may result in an
2032      * exception.
2033      *
2034      * @param e the window event
2035      * @see Component#enableEvents
2036      */
2037     protected void processWindowEvent(WindowEvent e) {
2038         WindowListener listener = windowListener;
2039         if (listener != null) {
2040             switch(e.getID()) {
2041                 case WindowEvent.WINDOW_OPENED:
2042                     listener.windowOpened(e);
2043                     break;
2044                 case WindowEvent.WINDOW_CLOSING:
2045                     listener.windowClosing(e);
2046                     break;
2047                 case WindowEvent.WINDOW_CLOSED:
2048                     listener.windowClosed(e);
2049                     break;
2050                 case WindowEvent.WINDOW_ICONIFIED:
2051                     listener.windowIconified(e);
2052                     break;
2053                 case WindowEvent.WINDOW_DEICONIFIED:
2054                     listener.windowDeiconified(e);
2055                     break;
2056                 case WindowEvent.WINDOW_ACTIVATED:
2057                     listener.windowActivated(e);
2058                     break;
2059                 case WindowEvent.WINDOW_DEACTIVATED:
2060                     listener.windowDeactivated(e);
2061                     break;
2062                 default:
2063                     break;
2064             }
2065         }
2066     }
2067 
2068     /**
2069      * Processes window focus event occuring on this window by
2070      * dispatching them to any registered WindowFocusListener objects.
2071      * NOTE: this method will not be called unless window focus events
2072      * are enabled for this window. This happens when one of the
2073      * following occurs:
2074      * <ul>
2075      * <li>a WindowFocusListener is registered via
2076      *     <code>addWindowFocusListener</code>
2077      * <li>Window focus events are enabled via <code>enableEvents</code>
2078      * </ul>
2079      * <p>Note that if the event parameter is <code>null</code>
2080      * the behavior is unspecified and may result in an
2081      * exception.
2082      *
2083      * @param e the window focus event
2084      * @see Component#enableEvents
2085      * @since 1.4
2086      */
2087     protected void processWindowFocusEvent(WindowEvent e) {
2088         WindowFocusListener listener = windowFocusListener;
2089         if (listener != null) {
2090             switch (e.getID()) {
2091                 case WindowEvent.WINDOW_GAINED_FOCUS:
2092                     listener.windowGainedFocus(e);
2093                     break;
2094                 case WindowEvent.WINDOW_LOST_FOCUS:
2095                     listener.windowLostFocus(e);
2096                     break;
2097                 default:
2098                     break;
2099             }
2100         }
2101     }
2102 
2103     /**
2104      * Processes window state event occuring on this window by
2105      * dispatching them to any registered <code>WindowStateListener</code>
2106      * objects.
2107      * NOTE: this method will not be called unless window state events
2108      * are enabled for this window.  This happens when one of the
2109      * following occurs:
2110      * <ul>
2111      * <li>a <code>WindowStateListener</code> is registered via
2112      *    <code>addWindowStateListener</code>
2113      * <li>window state events are enabled via <code>enableEvents</code>
2114      * </ul>
2115      * <p>Note that if the event parameter is <code>null</code>
2116      * the behavior is unspecified and may result in an
2117      * exception.
2118      *
2119      * @param e the window state event
2120      * @see java.awt.Component#enableEvents
2121      * @since 1.4
2122      */
2123     protected void processWindowStateEvent(WindowEvent e) {
2124         WindowStateListener listener = windowStateListener;
2125         if (listener != null) {
2126             switch (e.getID()) {
2127                 case WindowEvent.WINDOW_STATE_CHANGED:
2128                     listener.windowStateChanged(e);
2129                     break;
2130                 default:
2131                     break;
2132             }
2133         }
2134     }
2135 
2136     /**
2137      * Implements a debugging hook -- checks to see if
2138      * the user has typed <i>control-shift-F1</i>.  If so,
2139      * the list of child windows is dumped to <code>System.out</code>.
2140      * @param e  the keyboard event
2141      */
2142     void preProcessKeyEvent(KeyEvent e) {
2143         // Dump the list of child windows to System.out.
2144         if (e.isActionKey() && e.getKeyCode() == KeyEvent.VK_F1 &&
2145             e.isControlDown() && e.isShiftDown() &&
2146             e.getID() == KeyEvent.KEY_PRESSED) {
2147             list(System.out, 0);
2148         }
2149     }
2150 
2151     void postProcessKeyEvent(KeyEvent e) {
2152         // Do nothing
2153     }
2154 
2155 
2156     /**
2157      * Sets whether this window should always be above other windows.  If
2158      * there are multiple always-on-top windows, their relative order is
2159      * unspecified and platform dependent.
2160      * <p>
2161      * If some other window is already always-on-top then the
2162      * relative order between these windows is unspecified (depends on
2163      * platform).  No window can be brought to be over the always-on-top
2164      * window except maybe another always-on-top window.
2165      * <p>
2166      * All windows owned by an always-on-top window inherit this state and
2167      * automatically become always-on-top.  If a window ceases to be
2168      * always-on-top, the windows that it owns will no longer be
2169      * always-on-top.  When an always-on-top window is sent {@link #toBack
2170      * toBack}, its always-on-top state is set to <code>false</code>.
2171      *
2172      * <p> When this method is called on a window with a value of
2173      * <code>true</code>, and the window is visible and the platform
2174      * supports always-on-top for this window, the window is immediately
2175      * brought forward, "sticking" it in the top-most position. If the
2176      * window isn`t currently visible, this method sets the always-on-top
2177      * state to <code>true</code> but does not bring the window forward.
2178      * When the window is later shown, it will be always-on-top.
2179      *
2180      * <p> When this method is called on a window with a value of
2181      * <code>false</code> the always-on-top state is set to normal. The
2182      * window remains in the top-most position but it`s z-order can be
2183      * changed as for any other window.  Calling this method with a value
2184      * of <code>false</code> on a window that has a normal state has no
2185      * effect.  Setting the always-on-top state to false has no effect on
2186      * the relative z-order of the windows if there are no other
2187      * always-on-top windows.
2188      *
2189      * <p><b>Note</b>: some platforms might not support always-on-top
2190      * windows.  To detect if always-on-top windows are supported by the
2191      * current platform, use {@link Toolkit#isAlwaysOnTopSupported()} and
2192      * {@link Window#isAlwaysOnTopSupported()}.  If always-on-top mode
2193      * isn't supported by the toolkit or for this window, calling this
2194      * method has no effect.
2195      * <p>
2196      * If a SecurityManager is installed, the calling thread must be
2197      * granted the AWTPermission "setWindowAlwaysOnTop" in
2198      * order to set the value of this property. If this
2199      * permission is not granted, this method will throw a
2200      * SecurityException, and the current value of the property will
2201      * be left unchanged.
2202      *
2203      * @param alwaysOnTop true if the window should always be above other
2204      *        windows
2205      * @throws SecurityException if the calling thread does not have
2206      *         permission to set the value of always-on-top property
2207      * @see #isAlwaysOnTop
2208      * @see #toFront
2209      * @see #toBack
2210      * @see AWTPermission
2211      * @see #isAlwaysOnTopSupported
2212      * @see Toolkit#isAlwaysOnTopSupported
2213      * @since 1.5
2214      */
2215     public final void setAlwaysOnTop(boolean alwaysOnTop) throws SecurityException {
2216         SecurityManager security = System.getSecurityManager();
2217         if (security != null) {
2218             security.checkPermission(SecurityConstants.AWT.SET_WINDOW_ALWAYS_ON_TOP_PERMISSION);
2219         }
2220 
2221         boolean oldAlwaysOnTop;
2222         synchronized(this) {
2223             oldAlwaysOnTop = this.alwaysOnTop;
2224             this.alwaysOnTop = alwaysOnTop;
2225         }
2226         if (oldAlwaysOnTop != alwaysOnTop ) {
2227             if (isAlwaysOnTopSupported()) {
2228                 WindowPeer peer = (WindowPeer)this.peer;
2229                 synchronized(getTreeLock()) {
2230                     if (peer != null) {
2231                         peer.setAlwaysOnTop(alwaysOnTop);
2232                     }
2233                 }
2234             }
2235             firePropertyChange("alwaysOnTop", oldAlwaysOnTop, alwaysOnTop);
2236         }
2237     }
2238 
2239     /**
2240      * Returns whether the always-on-top mode is supported for this
2241      * window. Some platforms may not support always-on-top windows, some
2242      * may support only some kinds of top-level windows; for example,
2243      * a platform may not support always-on-top modal dialogs.
2244      * @return <code>true</code>, if the always-on-top mode is
2245      *         supported by the toolkit and for this window,
2246      *         <code>false</code>, if always-on-top mode is not supported
2247      *         for this window or toolkit doesn't support always-on-top windows.
2248      * @see #setAlwaysOnTop(boolean)
2249      * @see Toolkit#isAlwaysOnTopSupported
2250      * @since 1.6
2251      */
2252     public boolean isAlwaysOnTopSupported() {
2253         return Toolkit.getDefaultToolkit().isAlwaysOnTopSupported();
2254     }
2255 
2256 
2257     /**
2258      * Returns whether this window is an always-on-top window.
2259      * @return <code>true</code>, if the window is in always-on-top state,
2260      *         <code>false</code> otherwise
2261      * @see #setAlwaysOnTop
2262      * @since 1.5
2263      */
2264     public final boolean isAlwaysOnTop() {
2265         return alwaysOnTop;
2266     }
2267 
2268 
2269     /**
2270      * Returns the child Component of this Window that has focus if this Window
2271      * is focused; returns null otherwise.
2272      *
2273      * @return the child Component with focus, or null if this Window is not
2274      *         focused
2275      * @see #getMostRecentFocusOwner
2276      * @see #isFocused
2277      */
2278     public Component getFocusOwner() {
2279         return (isFocused())
2280             ? KeyboardFocusManager.getCurrentKeyboardFocusManager().
2281                   getFocusOwner()
2282             : null;
2283     }
2284 
2285     /**
2286      * Returns the child Component of this Window that will receive the focus
2287      * when this Window is focused. If this Window is currently focused, this
2288      * method returns the same Component as <code>getFocusOwner()</code>. If
2289      * this Window is not focused, then the child Component that most recently
2290      * requested focus will be returned. If no child Component has ever
2291      * requested focus, and this is a focusable Window, then this Window's
2292      * initial focusable Component is returned. If no child Component has ever
2293      * requested focus, and this is a non-focusable Window, null is returned.
2294      *
2295      * @return the child Component that will receive focus when this Window is
2296      *         focused
2297      * @see #getFocusOwner
2298      * @see #isFocused
2299      * @see #isFocusableWindow
2300      * @since 1.4
2301      */
2302     public Component getMostRecentFocusOwner() {
2303         if (isFocused()) {
2304             return getFocusOwner();
2305         } else {
2306             Component mostRecent =
2307                 KeyboardFocusManager.getMostRecentFocusOwner(this);
2308             if (mostRecent != null) {
2309                 return mostRecent;
2310             } else {
2311                 return (isFocusableWindow())
2312                     ? getFocusTraversalPolicy().getInitialComponent(this)
2313                     : null;
2314             }
2315         }
2316     }
2317 
2318     /**
2319      * Returns whether this Window is active. Only a Frame or a Dialog may be
2320      * active. The native windowing system may denote the active Window or its
2321      * children with special decorations, such as a highlighted title bar. The
2322      * active Window is always either the focused Window, or the first Frame or
2323      * Dialog that is an owner of the focused Window.
2324      *
2325      * @return whether this is the active Window.
2326      * @see #isFocused
2327      * @since 1.4
2328      */
2329     public boolean isActive() {
2330         return (KeyboardFocusManager.getCurrentKeyboardFocusManager().
2331                 getActiveWindow() == this);
2332     }
2333 
2334     /**
2335      * Returns whether this Window is focused. If there exists a focus owner,
2336      * the focused Window is the Window that is, or contains, that focus owner.
2337      * If there is no focus owner, then no Window is focused.
2338      * <p>
2339      * If the focused Window is a Frame or a Dialog it is also the active
2340      * Window. Otherwise, the active Window is the first Frame or Dialog that
2341      * is an owner of the focused Window.
2342      *
2343      * @return whether this is the focused Window.
2344      * @see #isActive
2345      * @since 1.4
2346      */
2347     public boolean isFocused() {
2348         return (KeyboardFocusManager.getCurrentKeyboardFocusManager().
2349                 getGlobalFocusedWindow() == this);
2350     }
2351 
2352     /**
2353      * Gets a focus traversal key for this Window. (See <code>
2354      * setFocusTraversalKeys</code> for a full description of each key.)
2355      * <p>
2356      * If the traversal key has not been explicitly set for this Window,
2357      * then this Window's parent's traversal key is returned. If the
2358      * traversal key has not been explicitly set for any of this Window's
2359      * ancestors, then the current KeyboardFocusManager's default traversal key
2360      * is returned.
2361      *
2362      * @param id one of KeyboardFocusManager.FORWARD_TRAVERSAL_KEYS,
2363      *         KeyboardFocusManager.BACKWARD_TRAVERSAL_KEYS,
2364      *         KeyboardFocusManager.UP_CYCLE_TRAVERSAL_KEYS, or
2365      *         KeyboardFocusManager.DOWN_CYCLE_TRAVERSAL_KEYS
2366      * @return the AWTKeyStroke for the specified key
2367      * @see Container#setFocusTraversalKeys
2368      * @see KeyboardFocusManager#FORWARD_TRAVERSAL_KEYS
2369      * @see KeyboardFocusManager#BACKWARD_TRAVERSAL_KEYS
2370      * @see KeyboardFocusManager#UP_CYCLE_TRAVERSAL_KEYS
2371      * @see KeyboardFocusManager#DOWN_CYCLE_TRAVERSAL_KEYS
2372      * @throws IllegalArgumentException if id is not one of
2373      *         KeyboardFocusManager.FORWARD_TRAVERSAL_KEYS,
2374      *         KeyboardFocusManager.BACKWARD_TRAVERSAL_KEYS,
2375      *         KeyboardFocusManager.UP_CYCLE_TRAVERSAL_KEYS, or
2376      *         KeyboardFocusManager.DOWN_CYCLE_TRAVERSAL_KEYS
2377      * @since 1.4
2378      */
2379     public Set<AWTKeyStroke> getFocusTraversalKeys(int id) {
2380         if (id < 0 || id >= KeyboardFocusManager.TRAVERSAL_KEY_LENGTH) {
2381             throw new IllegalArgumentException("invalid focus traversal key identifier");
2382         }
2383 
2384         // Okay to return Set directly because it is an unmodifiable view
2385         Set keystrokes = (focusTraversalKeys != null)
2386             ? focusTraversalKeys[id]
2387             : null;
2388 
2389         if (keystrokes != null) {
2390             return keystrokes;
2391         } else {
2392             return KeyboardFocusManager.getCurrentKeyboardFocusManager().
2393                 getDefaultFocusTraversalKeys(id);
2394         }
2395     }
2396 
2397     /**
2398      * Does nothing because Windows must always be roots of a focus traversal
2399      * cycle. The passed-in value is ignored.
2400      *
2401      * @param focusCycleRoot this value is ignored
2402      * @see #isFocusCycleRoot
2403      * @see Container#setFocusTraversalPolicy
2404      * @see Container#getFocusTraversalPolicy
2405      * @since 1.4
2406      */
2407     public final void setFocusCycleRoot(boolean focusCycleRoot) {
2408     }
2409 
2410     /**
2411      * Always returns <code>true</code> because all Windows must be roots of a
2412      * focus traversal cycle.
2413      *
2414      * @return <code>true</code>
2415      * @see #setFocusCycleRoot
2416      * @see Container#setFocusTraversalPolicy
2417      * @see Container#getFocusTraversalPolicy
2418      * @since 1.4
2419      */
2420     public final boolean isFocusCycleRoot() {
2421         return true;
2422     }
2423 
2424     /**
2425      * Always returns <code>null</code> because Windows have no ancestors; they
2426      * represent the top of the Component hierarchy.
2427      *
2428      * @return <code>null</code>
2429      * @see Container#isFocusCycleRoot()
2430      * @since 1.4
2431      */
2432     public final Container getFocusCycleRootAncestor() {
2433         return null;
2434     }
2435 
2436     /**
2437      * Returns whether this Window can become the focused Window, that is,
2438      * whether this Window or any of its subcomponents can become the focus
2439      * owner. For a Frame or Dialog to be focusable, its focusable Window state
2440      * must be set to <code>true</code>. For a Window which is not a Frame or
2441      * Dialog to be focusable, its focusable Window state must be set to
2442      * <code>true</code>, its nearest owning Frame or Dialog must be
2443      * showing on the screen, and it must contain at least one Component in
2444      * its focus traversal cycle. If any of these conditions is not met, then
2445      * neither this Window nor any of its subcomponents can become the focus
2446      * owner.
2447      *
2448      * @return <code>true</code> if this Window can be the focused Window;
2449      *         <code>false</code> otherwise
2450      * @see #getFocusableWindowState
2451      * @see #setFocusableWindowState
2452      * @see #isShowing
2453      * @see Component#isFocusable
2454      * @since 1.4
2455      */
2456     public final boolean isFocusableWindow() {
2457         // If a Window/Frame/Dialog was made non-focusable, then it is always
2458         // non-focusable.
2459         if (!getFocusableWindowState()) {
2460             return false;
2461         }
2462 
2463         // All other tests apply only to Windows.
2464         if (this instanceof Frame || this instanceof Dialog) {
2465             return true;
2466         }
2467 
2468         // A Window must have at least one Component in its root focus
2469         // traversal cycle to be focusable.
2470         if (getFocusTraversalPolicy().getDefaultComponent(this) == null) {
2471             return false;
2472         }
2473 
2474         // A Window's nearest owning Frame or Dialog must be showing on the
2475         // screen.
2476         for (Window owner = getOwner(); owner != null;
2477              owner = owner.getOwner())
2478         {
2479             if (owner instanceof Frame || owner instanceof Dialog) {
2480                 return owner.isShowing();
2481             }
2482         }
2483 
2484         return false;
2485     }
2486 
2487     /**
2488      * Returns whether this Window can become the focused Window if it meets
2489      * the other requirements outlined in <code>isFocusableWindow</code>. If
2490      * this method returns <code>false</code>, then
2491      * <code>isFocusableWindow</code> will return <code>false</code> as well.
2492      * If this method returns <code>true</code>, then
2493      * <code>isFocusableWindow</code> may return <code>true</code> or
2494      * <code>false</code> depending upon the other requirements which must be
2495      * met in order for a Window to be focusable.
2496      * <p>
2497      * By default, all Windows have a focusable Window state of
2498      * <code>true</code>.
2499      *
2500      * @return whether this Window can be the focused Window
2501      * @see #isFocusableWindow
2502      * @see #setFocusableWindowState
2503      * @see #isShowing
2504      * @see Component#setFocusable
2505      * @since 1.4
2506      */
2507     public boolean getFocusableWindowState() {
2508         return focusableWindowState;
2509     }
2510 
2511     /**
2512      * Sets whether this Window can become the focused Window if it meets
2513      * the other requirements outlined in <code>isFocusableWindow</code>. If
2514      * this Window's focusable Window state is set to <code>false</code>, then
2515      * <code>isFocusableWindow</code> will return <code>false</code>. If this
2516      * Window's focusable Window state is set to <code>true</code>, then
2517      * <code>isFocusableWindow</code> may return <code>true</code> or
2518      * <code>false</code> depending upon the other requirements which must be
2519      * met in order for a Window to be focusable.
2520      * <p>
2521      * Setting a Window's focusability state to <code>false</code> is the
2522      * standard mechanism for an application to identify to the AWT a Window
2523      * which will be used as a floating palette or toolbar, and thus should be
2524      * a non-focusable Window.
2525      *
2526      * Setting the focusability state on a visible <code>Window</code>
2527      * can have a delayed effect on some platforms &#151; the actual
2528      * change may happen only when the <code>Window</code> becomes
2529      * hidden and then visible again.  To ensure consistent behavior
2530      * across platforms, set the <code>Window</code>'s focusable state
2531      * when the <code>Window</code> is invisible and then show it.
2532      *
2533      * @param focusableWindowState whether this Window can be the focused
2534      *        Window
2535      * @see #isFocusableWindow
2536      * @see #getFocusableWindowState
2537      * @see #isShowing
2538      * @see Component#setFocusable
2539      * @since 1.4
2540      */
2541     public void setFocusableWindowState(boolean focusableWindowState) {
2542         boolean oldFocusableWindowState;
2543         synchronized (this) {
2544             oldFocusableWindowState = this.focusableWindowState;
2545             this.focusableWindowState = focusableWindowState;
2546         }
2547         WindowPeer peer = (WindowPeer)this.peer;
2548         if (peer != null) {
2549             peer.updateFocusableWindowState();
2550         }
2551         firePropertyChange("focusableWindowState", oldFocusableWindowState,
2552                            focusableWindowState);
2553         if (oldFocusableWindowState && !focusableWindowState && isFocused()) {
2554             for (Window owner = getOwner();
2555                  owner != null;
2556                  owner = owner.getOwner())
2557                 {
2558                     Component toFocus =
2559                         KeyboardFocusManager.getMostRecentFocusOwner(owner);
2560                     if (toFocus != null && toFocus.requestFocus(false, CausedFocusEvent.Cause.ACTIVATION)) {
2561                         return;
2562                     }
2563                 }
2564             KeyboardFocusManager.getCurrentKeyboardFocusManager().
2565                 clearGlobalFocusOwner();
2566         }
2567     }
2568 
2569     /**
2570      * Sets whether this window should receive focus on
2571      * subsequently being shown (with a call to {@link #setVisible setVisible(true)}),
2572      * or being moved to the front (with a call to {@link #toFront}).
2573      * <p>
2574      * Note that {@link #setVisible setVisible(true)} may be called indirectly
2575      * (e.g. when showing an owner of the window makes the window to be shown).
2576      * {@link #toFront} may also be called indirectly (e.g. when
2577      * {@link #setVisible setVisible(true)} is called on already visible window).
2578      * In all such cases this property takes effect as well.
2579      * <p>
2580      * The value of the property is not inherited by owned windows.
2581      *
2582      * @param autoRequestFocus whether this window should be focused on
2583      *        subsequently being shown or being moved to the front
2584      * @see #isAutoRequestFocus
2585      * @see #isFocusableWindow
2586      * @see #setVisible
2587      * @see #toFront
2588      * @since 1.7
2589      */
2590     public void setAutoRequestFocus(boolean autoRequestFocus) {
2591         this.autoRequestFocus = autoRequestFocus;
2592     }
2593 
2594     /**
2595      * Returns whether this window should receive focus on subsequently being shown
2596      * (with a call to {@link #setVisible setVisible(true)}), or being moved to the front
2597      * (with a call to {@link #toFront}).
2598      * <p>
2599      * By default, the window has {@code autoRequestFocus} value of {@code true}.
2600      *
2601      * @return {@code autoRequestFocus} value
2602      * @see #setAutoRequestFocus
2603      * @since 1.7
2604      */
2605     public boolean isAutoRequestFocus() {
2606         return autoRequestFocus;
2607     }
2608 
2609     /**
2610      * Adds a PropertyChangeListener to the listener list. The listener is
2611      * registered for all bound properties of this class, including the
2612      * following:
2613      * <ul>
2614      *    <li>this Window's font ("font")</li>
2615      *    <li>this Window's background color ("background")</li>
2616      *    <li>this Window's foreground color ("foreground")</li>
2617      *    <li>this Window's focusability ("focusable")</li>
2618      *    <li>this Window's focus traversal keys enabled state
2619      *        ("focusTraversalKeysEnabled")</li>
2620      *    <li>this Window's Set of FORWARD_TRAVERSAL_KEYS
2621      *        ("forwardFocusTraversalKeys")</li>
2622      *    <li>this Window's Set of BACKWARD_TRAVERSAL_KEYS
2623      *        ("backwardFocusTraversalKeys")</li>
2624      *    <li>this Window's Set of UP_CYCLE_TRAVERSAL_KEYS
2625      *        ("upCycleFocusTraversalKeys")</li>
2626      *    <li>this Window's Set of DOWN_CYCLE_TRAVERSAL_KEYS
2627      *        ("downCycleFocusTraversalKeys")</li>
2628      *    <li>this Window's focus traversal policy ("focusTraversalPolicy")
2629      *        </li>
2630      *    <li>this Window's focusable Window state ("focusableWindowState")
2631      *        </li>
2632      *    <li>this Window's always-on-top state("alwaysOnTop")</li>
2633      * </ul>
2634      * Note that if this Window is inheriting a bound property, then no
2635      * event will be fired in response to a change in the inherited property.
2636      * <p>
2637      * If listener is null, no exception is thrown and no action is performed.
2638      *
2639      * @param    listener  the PropertyChangeListener to be added
2640      *
2641      * @see Component#removePropertyChangeListener
2642      * @see #addPropertyChangeListener(java.lang.String,java.beans.PropertyChangeListener)
2643      */
2644     public void addPropertyChangeListener(PropertyChangeListener listener) {
2645         super.addPropertyChangeListener(listener);
2646     }
2647 
2648     /**
2649      * Adds a PropertyChangeListener to the listener list for a specific
2650      * property. The specified property may be user-defined, or one of the
2651      * following:
2652      * <ul>
2653      *    <li>this Window's font ("font")</li>
2654      *    <li>this Window's background color ("background")</li>
2655      *    <li>this Window's foreground color ("foreground")</li>
2656      *    <li>this Window's focusability ("focusable")</li>
2657      *    <li>this Window's focus traversal keys enabled state
2658      *        ("focusTraversalKeysEnabled")</li>
2659      *    <li>this Window's Set of FORWARD_TRAVERSAL_KEYS
2660      *        ("forwardFocusTraversalKeys")</li>
2661      *    <li>this Window's Set of BACKWARD_TRAVERSAL_KEYS
2662      *        ("backwardFocusTraversalKeys")</li>
2663      *    <li>this Window's Set of UP_CYCLE_TRAVERSAL_KEYS
2664      *        ("upCycleFocusTraversalKeys")</li>
2665      *    <li>this Window's Set of DOWN_CYCLE_TRAVERSAL_KEYS
2666      *        ("downCycleFocusTraversalKeys")</li>
2667      *    <li>this Window's focus traversal policy ("focusTraversalPolicy")
2668      *        </li>
2669      *    <li>this Window's focusable Window state ("focusableWindowState")
2670      *        </li>
2671      *    <li>this Window's always-on-top state("alwaysOnTop")</li>
2672      * </ul>
2673      * Note that if this Window is inheriting a bound property, then no
2674      * event will be fired in response to a change in the inherited property.
2675      * <p>
2676      * If listener is null, no exception is thrown and no action is performed.
2677      *
2678      * @param propertyName one of the property names listed above
2679      * @param listener the PropertyChangeListener to be added
2680      *
2681      * @see #addPropertyChangeListener(java.beans.PropertyChangeListener)
2682      * @see Component#removePropertyChangeListener
2683      */
2684     public void addPropertyChangeListener(String propertyName,
2685                                           PropertyChangeListener listener) {
2686         super.addPropertyChangeListener(propertyName, listener);
2687     }
2688 
2689     /**
2690      * Indicates if this container is a validate root.
2691      * <p>
2692      * {@code Window} objects are the validate roots, and, therefore, they
2693      * override this method to return {@code true}.
2694      *
2695      * @return {@code true}
2696      * @since 1.7
2697      * @see java.awt.Container#isValidateRoot
2698      */
2699     @Override
2700     public boolean isValidateRoot() {
2701         return true;
2702     }
2703 
2704     /**
2705      * Dispatches an event to this window or one of its sub components.
2706      * @param e the event
2707      */
2708     void dispatchEventImpl(AWTEvent e) {
2709         if (e.getID() == ComponentEvent.COMPONENT_RESIZED) {
2710             invalidate();
2711             validate();
2712         }
2713         super.dispatchEventImpl(e);
2714     }
2715 
2716     /**
2717      * @deprecated As of JDK version 1.1
2718      * replaced by <code>dispatchEvent(AWTEvent)</code>.
2719      */
2720     @Deprecated
2721     public boolean postEvent(Event e) {
2722         if (handleEvent(e)) {
2723             e.consume();
2724             return true;
2725         }
2726         return false;
2727     }
2728 
2729     /**
2730      * Checks if this Window is showing on screen.
2731      * @see Component#setVisible
2732     */
2733     public boolean isShowing() {
2734         return visible;
2735     }
2736 
2737     /**
2738      * @deprecated As of J2SE 1.4, replaced by
2739      * {@link Component#applyComponentOrientation Component.applyComponentOrientation}.
2740      */
2741     @Deprecated
2742     public void applyResourceBundle(ResourceBundle rb) {
2743         applyComponentOrientation(ComponentOrientation.getOrientation(rb));
2744     }
2745 
2746     /**
2747      * @deprecated As of J2SE 1.4, replaced by
2748      * {@link Component#applyComponentOrientation Component.applyComponentOrientation}.
2749      */
2750     @Deprecated
2751     public void applyResourceBundle(String rbName) {
2752         applyResourceBundle(ResourceBundle.getBundle(rbName));
2753     }
2754 
2755    /*
2756     * Support for tracking all windows owned by this window
2757     */
2758     void addOwnedWindow(WeakReference weakWindow) {
2759         if (weakWindow != null) {
2760             synchronized(ownedWindowList) {
2761                 // this if statement should really be an assert, but we don't
2762                 // have asserts...
2763                 if (!ownedWindowList.contains(weakWindow)) {
2764                     ownedWindowList.addElement(weakWindow);
2765                 }
2766             }
2767         }
2768     }
2769 
2770     void removeOwnedWindow(WeakReference weakWindow) {
2771         if (weakWindow != null) {
2772             // synchronized block not required since removeElement is
2773             // already synchronized
2774             ownedWindowList.removeElement(weakWindow);
2775         }
2776     }
2777 
2778     void connectOwnedWindow(Window child) {
2779         child.parent = this;
2780         addOwnedWindow(child.weakThis);
2781     }
2782 
2783     private void addToWindowList() {
2784         synchronized (Window.class) {
2785             Vector<WeakReference<Window>> windowList = (Vector<WeakReference<Window>>)appContext.get(Window.class);
2786             if (windowList == null) {
2787                 windowList = new Vector<WeakReference<Window>>();
2788                 appContext.put(Window.class, windowList);
2789             }
2790             windowList.add(weakThis);
2791         }
2792     }
2793 
2794     private static void removeFromWindowList(AppContext context, WeakReference weakThis) {
2795         synchronized (Window.class) {
2796             Vector<WeakReference<Window>> windowList = (Vector<WeakReference<Window>>)context.get(Window.class);
2797             if (windowList != null) {
2798                 windowList.remove(weakThis);
2799             }
2800         }
2801     }
2802 
2803     private void removeFromWindowList() {
2804         removeFromWindowList(appContext, weakThis);
2805     }
2806 
2807     /**
2808      * Window type.
2809      *
2810      * Synchronization: ObjectLock
2811      */
2812     private Type type = Type.NORMAL;
2813 
2814     /**
2815      * Sets the type of the window.
2816      *
2817      * This method can only be called while the window is not displayable.
2818      *
2819      * @throws IllegalComponentStateException if the window
2820      *         is displayable.
2821      * @throws IllegalArgumentException if the type is {@code null}
2822      * @see    Component#isDisplayable
2823      * @see    #getType
2824      * @since 1.7
2825      */
2826     public void setType(Type type) {
2827         if (type == null) {
2828             throw new IllegalArgumentException("type should not be null.");
2829         }
2830         synchronized (getTreeLock()) {
2831             if (isDisplayable()) {
2832                 throw new IllegalComponentStateException(
2833                         "The window is displayable.");
2834             }
2835             synchronized (getObjectLock()) {
2836                 this.type = type;
2837             }
2838         }
2839     }
2840 
2841     /**
2842      * Returns the type of the window.
2843      *
2844      * @see   #setType
2845      * @since 1.7
2846      */
2847     public Type getType() {
2848         synchronized (getObjectLock()) {
2849             return type;
2850         }
2851     }
2852 
2853     /**
2854      * The window serialized data version.
2855      *
2856      * @serial
2857      */
2858     private int windowSerializedDataVersion = 2;
2859 
2860     /**
2861      * Writes default serializable fields to stream.  Writes
2862      * a list of serializable <code>WindowListener</code>s and
2863      * <code>WindowFocusListener</code>s as optional data.
2864      * Writes a list of child windows as optional data.
2865      * Writes a list of icon images as optional data
2866      *
2867      * @param s the <code>ObjectOutputStream</code> to write
2868      * @serialData <code>null</code> terminated sequence of
2869      *    0 or more pairs; the pair consists of a <code>String</code>
2870      *    and and <code>Object</code>; the <code>String</code>
2871      *    indicates the type of object and is one of the following:
2872      *    <code>windowListenerK</code> indicating a
2873      *      <code>WindowListener</code> object;
2874      *    <code>windowFocusWindowK</code> indicating a
2875      *      <code>WindowFocusListener</code> object;
2876      *    <code>ownedWindowK</code> indicating a child
2877      *      <code>Window</code> object
2878      *
2879      * @see AWTEventMulticaster#save(java.io.ObjectOutputStream, java.lang.String, java.util.EventListener)
2880      * @see Component#windowListenerK
2881      * @see Component#windowFocusListenerK
2882      * @see Component#ownedWindowK
2883      * @see #readObject(ObjectInputStream)
2884      */
2885     private void writeObject(ObjectOutputStream s) throws IOException {
2886         synchronized (this) {
2887             // Update old focusMgr fields so that our object stream can be read
2888             // by previous releases
2889             focusMgr = new FocusManager();
2890             focusMgr.focusRoot = this;
2891             focusMgr.focusOwner = getMostRecentFocusOwner();
2892 
2893             s.defaultWriteObject();
2894 
2895             // Clear fields so that we don't keep extra references around
2896             focusMgr = null;
2897 
2898             AWTEventMulticaster.save(s, windowListenerK, windowListener);
2899             AWTEventMulticaster.save(s, windowFocusListenerK, windowFocusListener);
2900             AWTEventMulticaster.save(s, windowStateListenerK, windowStateListener);
2901         }
2902 
2903         s.writeObject(null);
2904 
2905         synchronized (ownedWindowList) {
2906             for (int i = 0; i < ownedWindowList.size(); i++) {
2907                 Window child = ownedWindowList.elementAt(i).get();
2908                 if (child != null) {
2909                     s.writeObject(ownedWindowK);
2910                     s.writeObject(child);
2911                 }
2912             }
2913         }
2914         s.writeObject(null);
2915 
2916         //write icon array
2917         if (icons != null) {
2918             for (Image i : icons) {
2919                 if (i instanceof Serializable) {
2920                     s.writeObject(i);
2921                 }
2922             }
2923         }
2924         s.writeObject(null);
2925     }
2926 
2927     //
2928     // Part of deserialization procedure to be called before
2929     // user's code.
2930     //
2931     private void initDeserializedWindow() {
2932         setWarningString();
2933         inputContextLock = new Object();
2934 
2935         // Deserialized Windows are not yet visible.
2936         visible = false;
2937 
2938         weakThis = new WeakReference(this);
2939 
2940         anchor = new Object();
2941         sun.java2d.Disposer.addRecord(anchor, new WindowDisposerRecord(appContext, this));
2942 
2943         addToWindowList();
2944         initGC(null);
2945     }
2946 
2947     private void deserializeResources(ObjectInputStream s)
2948         throws ClassNotFoundException, IOException, HeadlessException {
2949             ownedWindowList = new Vector();
2950 
2951             if (windowSerializedDataVersion < 2) {
2952                 // Translate old-style focus tracking to new model. For 1.4 and
2953                 // later releases, we'll rely on the Window's initial focusable
2954                 // Component.
2955                 if (focusMgr != null) {
2956                     if (focusMgr.focusOwner != null) {
2957                         KeyboardFocusManager.
2958                             setMostRecentFocusOwner(this, focusMgr.focusOwner);
2959                     }
2960                 }
2961 
2962                 // This field is non-transient and relies on default serialization.
2963                 // However, the default value is insufficient, so we need to set
2964                 // it explicitly for object data streams prior to 1.4.
2965                 focusableWindowState = true;
2966 
2967 
2968             }
2969 
2970         Object keyOrNull;
2971         while(null != (keyOrNull = s.readObject())) {
2972             String key = ((String)keyOrNull).intern();
2973 
2974             if (windowListenerK == key) {
2975                 addWindowListener((WindowListener)(s.readObject()));
2976             } else if (windowFocusListenerK == key) {
2977                 addWindowFocusListener((WindowFocusListener)(s.readObject()));
2978             } else if (windowStateListenerK == key) {
2979                 addWindowStateListener((WindowStateListener)(s.readObject()));
2980             } else // skip value for unrecognized key
2981                 s.readObject();
2982         }
2983 
2984         try {
2985             while (null != (keyOrNull = s.readObject())) {
2986                 String key = ((String)keyOrNull).intern();
2987 
2988                 if (ownedWindowK == key)
2989                     connectOwnedWindow((Window) s.readObject());
2990 
2991                 else // skip value for unrecognized key
2992                     s.readObject();
2993             }
2994 
2995             //read icons
2996             Object obj = s.readObject(); //Throws OptionalDataException
2997                                          //for pre1.6 objects.
2998             icons = new ArrayList<Image>(); //Frame.readObject() assumes
2999                                             //pre1.6 version if icons is null.
3000             while (obj != null) {
3001                 if (obj instanceof Image) {
3002                     icons.add((Image)obj);
3003                 }
3004                 obj = s.readObject();
3005             }
3006         }
3007         catch (OptionalDataException e) {
3008             // 1.1 serialized form
3009             // ownedWindowList will be updated by Frame.readObject
3010         }
3011 
3012     }
3013 
3014     /**
3015      * Reads the <code>ObjectInputStream</code> and an optional
3016      * list of listeners to receive various events fired by
3017      * the component; also reads a list of
3018      * (possibly <code>null</code>) child windows.
3019      * Unrecognized keys or values will be ignored.
3020      *
3021      * @param s the <code>ObjectInputStream</code> to read
3022      * @exception HeadlessException if
3023      *   <code>GraphicsEnvironment.isHeadless</code> returns
3024      *   <code>true</code>
3025      * @see java.awt.GraphicsEnvironment#isHeadless
3026      * @see #writeObject
3027      */
3028     private void readObject(ObjectInputStream s)
3029       throws ClassNotFoundException, IOException, HeadlessException
3030     {
3031          GraphicsEnvironment.checkHeadless();
3032          initDeserializedWindow();
3033          ObjectInputStream.GetField f = s.readFields();
3034 
3035          syncLWRequests = f.get("syncLWRequests", systemSyncLWRequests);
3036          state = f.get("state", 0);
3037          focusableWindowState = f.get("focusableWindowState", true);
3038          windowSerializedDataVersion = f.get("windowSerializedDataVersion", 1);
3039          locationByPlatform = f.get("locationByPlatform", locationByPlatformProp);
3040          // Note: 1.4 (or later) doesn't use focusMgr
3041          focusMgr = (FocusManager)f.get("focusMgr", null);
3042          Dialog.ModalExclusionType et = (Dialog.ModalExclusionType)
3043              f.get("modalExclusionType", Dialog.ModalExclusionType.NO_EXCLUDE);
3044          setModalExclusionType(et); // since 6.0
3045          boolean aot = f.get("alwaysOnTop", false);
3046          if(aot) {
3047              setAlwaysOnTop(aot); // since 1.5; subject to permission check
3048          }
3049          shape = (Shape)f.get("shape", null);
3050          opacity = (Float)f.get("opacity", 1.0f);
3051 
3052          this.securityWarningWidth = 0;
3053          this.securityWarningHeight = 0;
3054          this.securityWarningPointX = 2.0;
3055          this.securityWarningPointY = 0.0;
3056          this.securityWarningAlignmentX = RIGHT_ALIGNMENT;
3057          this.securityWarningAlignmentY = TOP_ALIGNMENT;
3058 
3059          deserializeResources(s);
3060     }
3061 
3062     /*
3063      * --- Accessibility Support ---
3064      *
3065      */
3066 
3067     /**
3068      * Gets the AccessibleContext associated with this Window.
3069      * For windows, the AccessibleContext takes the form of an
3070      * AccessibleAWTWindow.
3071      * A new AccessibleAWTWindow instance is created if necessary.
3072      *
3073      * @return an AccessibleAWTWindow that serves as the
3074      *         AccessibleContext of this Window
3075      * @since 1.3
3076      */
3077     public AccessibleContext getAccessibleContext() {
3078         if (accessibleContext == null) {
3079             accessibleContext = new AccessibleAWTWindow();
3080         }
3081         return accessibleContext;
3082     }
3083 
3084     /**
3085      * This class implements accessibility support for the
3086      * <code>Window</code> class.  It provides an implementation of the
3087      * Java Accessibility API appropriate to window user-interface elements.
3088      * @since 1.3
3089      */
3090     protected class AccessibleAWTWindow extends AccessibleAWTContainer
3091     {
3092         /*
3093          * JDK 1.3 serialVersionUID
3094          */
3095         private static final long serialVersionUID = 4215068635060671780L;
3096 
3097         /**
3098          * Get the role of this object.
3099          *
3100          * @return an instance of AccessibleRole describing the role of the
3101          * object
3102          * @see javax.accessibility.AccessibleRole
3103          */
3104         public AccessibleRole getAccessibleRole() {
3105             return AccessibleRole.WINDOW;
3106         }
3107 
3108         /**
3109          * Get the state of this object.
3110          *
3111          * @return an instance of AccessibleStateSet containing the current
3112          * state set of the object
3113          * @see javax.accessibility.AccessibleState
3114          */
3115         public AccessibleStateSet getAccessibleStateSet() {
3116             AccessibleStateSet states = super.getAccessibleStateSet();
3117             if (getFocusOwner() != null) {
3118                 states.add(AccessibleState.ACTIVE);
3119             }
3120             return states;
3121         }
3122 
3123     } // inner class AccessibleAWTWindow
3124 
3125     @Override
3126     void setGraphicsConfiguration(GraphicsConfiguration gc) {
3127         if (gc == null) {
3128             gc = GraphicsEnvironment.
3129                     getLocalGraphicsEnvironment().
3130                     getDefaultScreenDevice().
3131                     getDefaultConfiguration();
3132         }
3133         synchronized (getTreeLock()) {
3134             super.setGraphicsConfiguration(gc);
3135             if (log.isLoggable(PlatformLogger.FINER)) {
3136                 log.finer("+ Window.setGraphicsConfiguration(): new GC is \n+ " + getGraphicsConfiguration_NoClientCode() + "\n+ this is " + this);
3137             }
3138         }
3139     }
3140 
3141     /**
3142      * Sets the location of the window relative to the specified
3143      * component according to the following scenarios.
3144      * <p>
3145      * The target screen mentioned below is a screen to which
3146      * the window should be placed after the setLocationRelativeTo
3147      * method is called.
3148      * <ul>
3149      * <li>If the component is {@code null}, or the {@code
3150      * GraphicsConfiguration} associated with this component is
3151      * {@code null}, the window is placed in the center of the
3152      * screen. The center point can be obtained with the {@link
3153      * GraphicsEnvironment#getCenterPoint
3154      * GraphicsEnvironment.getCenterPoint} method.
3155      * <li>If the component is not {@code null}, but it is not
3156      * currently showing, the window is placed in the center of
3157      * the target screen defined by the {@code
3158      * GraphicsConfiguration} associated with this component.
3159      * <li>If the component is not {@code null} and is shown on
3160      * the screen, then the window is located in such a way that
3161      * the center of the window coincides with the center of the
3162      * component.
3163      * </ul>
3164      * <p>
3165      * If the screens configuration does not allow the window to
3166      * be moved from one screen to another, then the window is
3167      * only placed at the location determined according to the
3168      * above conditions and its {@code GraphicsConfiguration} is
3169      * not changed.
3170      * <p>
3171      * <b>Note</b>: If the lower edge of the window is out of the screen,
3172      * then the window is placed to the side of the <code>Component</code>
3173      * that is closest to the center of the screen. So if the
3174      * component is on the right part of the screen, the window
3175      * is placed to its left, and vice versa.
3176      * <p>
3177      * If after the window location has been calculated, the upper,
3178      * left, or right edge of the window is out of the screen,
3179      * then the window is located in such a way that the upper,
3180      * left, or right edge of the window coincides with the
3181      * corresponding edge of the screen. If both left and right
3182      * edges of the window are out of the screen, the window is
3183      * placed at the left side of the screen. The similar placement
3184      * will occur if both top and bottom edges are out of the screen.
3185      * In that case, the window is placed at the top side of the screen.
3186      * <p>
3187      * The method changes the geometry-related data. Therefore,
3188      * the native windowing system may ignore such requests, or it may modify
3189      * the requested data, so that the {@code Window} object is placed and sized
3190      * in a way that corresponds closely to the desktop settings.
3191      *
3192      * @param c  the component in relation to which the window's location
3193      *           is determined
3194      * @see java.awt.GraphicsEnvironment#getCenterPoint
3195      * @since 1.4
3196      */
3197     public void setLocationRelativeTo(Component c) {
3198         // target location
3199         int dx = 0, dy = 0;
3200         // target GC
3201         GraphicsConfiguration gc = getGraphicsConfiguration_NoClientCode();
3202         Rectangle gcBounds = gc.getBounds();
3203 
3204         Dimension windowSize = getSize();
3205 
3206         // search a top-level of c
3207         Window componentWindow = SunToolkit.getContainingWindow(c);
3208         if ((c == null) || (componentWindow == null)) {
3209             GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment();
3210             gc = ge.getDefaultScreenDevice().getDefaultConfiguration();
3211             gcBounds = gc.getBounds();
3212             Point centerPoint = ge.getCenterPoint();
3213             dx = centerPoint.x - windowSize.width / 2;
3214             dy = centerPoint.y - windowSize.height / 2;
3215         } else if (!c.isShowing()) {
3216             gc = componentWindow.getGraphicsConfiguration();
3217             gcBounds = gc.getBounds();
3218             dx = gcBounds.x + (gcBounds.width - windowSize.width) / 2;
3219             dy = gcBounds.y + (gcBounds.height - windowSize.height) / 2;
3220         } else {
3221             gc = componentWindow.getGraphicsConfiguration();
3222             gcBounds = gc.getBounds();
3223             Dimension compSize = c.getSize();
3224             Point compLocation = c.getLocationOnScreen();
3225             dx = compLocation.x + ((compSize.width - windowSize.width) / 2);
3226             dy = compLocation.y + ((compSize.height - windowSize.height) / 2);
3227 
3228             // Adjust for bottom edge being offscreen
3229             if (dy + windowSize.height > gcBounds.y + gcBounds.height) {
3230                 dy = gcBounds.y + gcBounds.height - windowSize.height;
3231                 if (compLocation.x - gcBounds.x + compSize.width / 2 < gcBounds.width / 2) {
3232                     dx = compLocation.x + compSize.width;
3233                 } else {
3234                     dx = compLocation.x - windowSize.width;
3235                 }
3236             }
3237         }
3238 
3239         // Avoid being placed off the edge of the screen:
3240         // bottom
3241         if (dy + windowSize.height > gcBounds.y + gcBounds.height) {
3242             dy = gcBounds.y + gcBounds.height - windowSize.height;
3243         }
3244         // top
3245         if (dy < gcBounds.y) {
3246             dy = gcBounds.y;
3247         }
3248         // right
3249         if (dx + windowSize.width > gcBounds.x + gcBounds.width) {
3250             dx = gcBounds.x + gcBounds.width - windowSize.width;
3251         }
3252         // left
3253         if (dx < gcBounds.x) {
3254             dx = gcBounds.x;
3255         }
3256 
3257         setLocation(dx, dy);
3258     }
3259 
3260     /**
3261      * Overridden from Component.  Top-level Windows should not propagate a
3262      * MouseWheelEvent beyond themselves into their owning Windows.
3263      */
3264     void deliverMouseWheelToAncestor(MouseWheelEvent e) {}
3265 
3266     /**
3267      * Overridden from Component.  Top-level Windows don't dispatch to ancestors
3268      */
3269     boolean dispatchMouseWheelToAncestor(MouseWheelEvent e) {return false;}
3270 
3271     /**
3272      * Creates a new strategy for multi-buffering on this component.
3273      * Multi-buffering is useful for rendering performance.  This method
3274      * attempts to create the best strategy available with the number of
3275      * buffers supplied.  It will always create a <code>BufferStrategy</code>
3276      * with that number of buffers.
3277      * A page-flipping strategy is attempted first, then a blitting strategy
3278      * using accelerated buffers.  Finally, an unaccelerated blitting
3279      * strategy is used.
3280      * <p>
3281      * Each time this method is called,
3282      * the existing buffer strategy for this component is discarded.
3283      * @param numBuffers number of buffers to create
3284      * @exception IllegalArgumentException if numBuffers is less than 1.
3285      * @exception IllegalStateException if the component is not displayable
3286      * @see #isDisplayable
3287      * @see #getBufferStrategy
3288      * @since 1.4
3289      */
3290     public void createBufferStrategy(int numBuffers) {
3291         super.createBufferStrategy(numBuffers);
3292     }
3293 
3294     /**
3295      * Creates a new strategy for multi-buffering on this component with the
3296      * required buffer capabilities.  This is useful, for example, if only
3297      * accelerated memory or page flipping is desired (as specified by the
3298      * buffer capabilities).
3299      * <p>
3300      * Each time this method
3301      * is called, the existing buffer strategy for this component is discarded.
3302      * @param numBuffers number of buffers to create, including the front buffer
3303      * @param caps the required capabilities for creating the buffer strategy;
3304      * cannot be <code>null</code>
3305      * @exception AWTException if the capabilities supplied could not be
3306      * supported or met; this may happen, for example, if there is not enough
3307      * accelerated memory currently available, or if page flipping is specified
3308      * but not possible.
3309      * @exception IllegalArgumentException if numBuffers is less than 1, or if
3310      * caps is <code>null</code>
3311      * @see #getBufferStrategy
3312      * @since 1.4
3313      */
3314     public void createBufferStrategy(int numBuffers,
3315         BufferCapabilities caps) throws AWTException {
3316         super.createBufferStrategy(numBuffers, caps);
3317     }
3318 
3319     /**
3320      * Returns the <code>BufferStrategy</code> used by this component.  This
3321      * method will return null if a <code>BufferStrategy</code> has not yet
3322      * been created or has been disposed.
3323      *
3324      * @return the buffer strategy used by this component
3325      * @see #createBufferStrategy
3326      * @since 1.4
3327      */
3328     public BufferStrategy getBufferStrategy() {
3329         return super.getBufferStrategy();
3330     }
3331 
3332     Component getTemporaryLostComponent() {
3333         return temporaryLostComponent;
3334     }
3335     Component setTemporaryLostComponent(Component component) {
3336         Component previousComp = temporaryLostComponent;
3337         // Check that "component" is an acceptable focus owner and don't store it otherwise
3338         // - or later we will have problems with opposite while handling  WINDOW_GAINED_FOCUS
3339         if (component == null || component.canBeFocusOwner()) {
3340             temporaryLostComponent = component;
3341         } else {
3342             temporaryLostComponent = null;
3343         }
3344         return previousComp;
3345     }
3346 
3347     /**
3348      * Checks whether this window can contain focus owner.
3349      * Verifies that it is focusable and as container it can container focus owner.
3350      * @since 1.5
3351      */
3352     boolean canContainFocusOwner(Component focusOwnerCandidate) {
3353         return super.canContainFocusOwner(focusOwnerCandidate) && isFocusableWindow();
3354     }
3355 
3356     private boolean locationByPlatform = locationByPlatformProp;
3357 
3358 
3359     /**
3360      * Sets whether this Window should appear at the default location for the
3361      * native windowing system or at the current location (returned by
3362      * <code>getLocation</code>) the next time the Window is made visible.
3363      * This behavior resembles a native window shown without programmatically
3364      * setting its location.  Most windowing systems cascade windows if their
3365      * locations are not explicitly set. The actual location is determined once the
3366      * window is shown on the screen.
3367      * <p>
3368      * This behavior can also be enabled by setting the System Property
3369      * "java.awt.Window.locationByPlatform" to "true", though calls to this method
3370      * take precedence.
3371      * <p>
3372      * Calls to <code>setVisible</code>, <code>setLocation</code> and
3373      * <code>setBounds</code> after calling <code>setLocationByPlatform</code> clear
3374      * this property of the Window.
3375      * <p>
3376      * For example, after the following code is executed:
3377      * <pre><blockquote>
3378      * setLocationByPlatform(true);
3379      * setVisible(true);
3380      * boolean flag = isLocationByPlatform();
3381      * </blockquote></pre>
3382      * The window will be shown at platform's default location and
3383      * <code>flag</code> will be <code>false</code>.
3384      * <p>
3385      * In the following sample:
3386      * <pre><blockquote>
3387      * setLocationByPlatform(true);
3388      * setLocation(10, 10);
3389      * boolean flag = isLocationByPlatform();
3390      * setVisible(true);
3391      * </blockquote></pre>
3392      * The window will be shown at (10, 10) and <code>flag</code> will be
3393      * <code>false</code>.
3394      *
3395      * @param locationByPlatform <code>true</code> if this Window should appear
3396      *        at the default location, <code>false</code> if at the current location
3397      * @throws <code>IllegalComponentStateException</code> if the window
3398      *         is showing on screen and locationByPlatform is <code>true</code>.
3399      * @see #setLocation
3400      * @see #isShowing
3401      * @see #setVisible
3402      * @see #isLocationByPlatform
3403      * @see java.lang.System#getProperty(String)
3404      * @since 1.5
3405      */
3406     public void setLocationByPlatform(boolean locationByPlatform) {
3407         synchronized (getTreeLock()) {
3408             if (locationByPlatform && isShowing()) {
3409                 throw new IllegalComponentStateException("The window is showing on screen.");
3410             }
3411             this.locationByPlatform = locationByPlatform;
3412         }
3413     }
3414 
3415     /**
3416      * Returns <code>true</code> if this Window will appear at the default location
3417      * for the native windowing system the next time this Window is made visible.
3418      * This method always returns <code>false</code> if the Window is showing on the
3419      * screen.
3420      *
3421      * @return whether this Window will appear at the default location
3422      * @see #setLocationByPlatform
3423      * @see #isShowing
3424      * @since 1.5
3425      */
3426     public boolean isLocationByPlatform() {
3427         synchronized (getTreeLock()) {
3428             return locationByPlatform;
3429         }
3430     }
3431 
3432     /**
3433      * {@inheritDoc}
3434      * <p>
3435      * The {@code width} or {@code height} values
3436      * are automatically enlarged if either is less than
3437      * the minimum size as specified by previous call to
3438      * {@code setMinimumSize}.
3439      * <p>
3440      * The method changes the geometry-related data. Therefore,
3441      * the native windowing system may ignore such requests, or it may modify
3442      * the requested data, so that the {@code Window} object is placed and sized
3443      * in a way that corresponds closely to the desktop settings.
3444      *
3445      * @see #getBounds
3446      * @see #setLocation(int, int)
3447      * @see #setLocation(Point)
3448      * @see #setSize(int, int)
3449      * @see #setSize(Dimension)
3450      * @see #setMinimumSize
3451      * @see #setLocationByPlatform
3452      * @see #isLocationByPlatform
3453      * @since 1.6
3454      */
3455     public void setBounds(int x, int y, int width, int height) {
3456         synchronized (getTreeLock()) {
3457             if (getBoundsOp() == ComponentPeer.SET_LOCATION ||
3458                 getBoundsOp() == ComponentPeer.SET_BOUNDS)
3459             {
3460                 locationByPlatform = false;
3461             }
3462             super.setBounds(x, y, width, height);
3463         }
3464     }
3465 
3466     /**
3467      * {@inheritDoc}
3468      * <p>
3469      * The {@code r.width} or {@code r.height} values
3470      * will be automatically enlarged if either is less than
3471      * the minimum size as specified by previous call to
3472      * {@code setMinimumSize}.
3473      * <p>
3474      * The method changes the geometry-related data. Therefore,
3475      * the native windowing system may ignore such requests, or it may modify
3476      * the requested data, so that the {@code Window} object is placed and sized
3477      * in a way that corresponds closely to the desktop settings.
3478      *
3479      * @see #getBounds
3480      * @see #setLocation(int, int)
3481      * @see #setLocation(Point)
3482      * @see #setSize(int, int)
3483      * @see #setSize(Dimension)
3484      * @see #setMinimumSize
3485      * @see #setLocationByPlatform
3486      * @see #isLocationByPlatform
3487      * @since 1.6
3488      */
3489     public void setBounds(Rectangle r) {
3490         setBounds(r.x, r.y, r.width, r.height);
3491     }
3492 
3493     /**
3494      * Determines whether this component will be displayed on the screen.
3495      * @return <code>true</code> if the component and all of its ancestors
3496      *          until a toplevel window are visible, <code>false</code> otherwise
3497      */
3498     boolean isRecursivelyVisible() {
3499         // 5079694 fix: for a toplevel to be displayed, its parent doesn't have to be visible.
3500         // We're overriding isRecursivelyVisible to implement this policy.
3501         return visible;
3502     }
3503 
3504 
3505     // ******************** SHAPES & TRANSPARENCY CODE ********************
3506 
3507     /**
3508      * Returns the opacity of the window.
3509      *
3510      * @return the opacity of the window
3511      *
3512      * @see Window#setOpacity(float)
3513      * @see GraphicsDevice.WindowTranslucency
3514      *
3515      * @since 1.7
3516      */
3517     public float getOpacity() {
3518         synchronized (getTreeLock()) {
3519             return opacity;
3520         }
3521     }
3522 
3523     /**
3524      * Sets the opacity of the window.
3525      * <p>
3526      * The opacity value is in the range [0..1]. Note that setting the opacity
3527      * level of 0 may or may not disable the mouse event handling on this
3528      * window. This is a platform-dependent behavior.
3529      * <p>
3530      * The following conditions must be met in order to set the opacity value
3531      * less than {@code 1.0f}:
3532      * <ul>
3533      * <li>The {@link GraphicsDevice.WindowTranslucency#TRANSLUCENT TRANSLUCENT}
3534      * translucency must be supported by the underlying system
3535      * <li>The window must be undecorated (see {@link Frame#setUndecorated}
3536      * and {@link Dialog#setUndecorated})
3537      * <li>The window must not be in full-screen mode (see {@link
3538      * GraphicsDevice#setFullScreenWindow(Window)})
3539      * </ul>
3540      * <p>
3541      * If the requested opacity value is less than {@code 1.0f}, and any of the
3542      * above conditions are not met, the window opacity will not change,
3543      * and the {@code IllegalComponentStateException} will be thrown.
3544      * <p>
3545      * The translucency levels of individual pixels may also be effected by the
3546      * alpha component of their color (see {@link Window#setBackground(Color)}) and the
3547      * current shape of this window (see {@link #setShape(Shape)}).
3548      *
3549      * @param opacity the opacity level to set to the window
3550      *
3551      * @throws IllegalArgumentException if the opacity is out of the range
3552      *     [0..1]
3553      * @throws IllegalComponentStateException if the window is decorated and
3554      *     the opacity is less than {@code 1.0f}
3555      * @throws IllegalComponentStateException if the window is in full screen
3556      *     mode, and the opacity is less than {@code 1.0f}
3557      * @throws UnsupportedOperationException if the {@code
3558      *     GraphicsDevice.WindowTranslucency#TRANSLUCENT TRANSLUCENT}
3559      *     translucency is not supported and the opacity is less than
3560      *     {@code 1.0f}
3561      *
3562      * @see Window#getOpacity
3563      * @see Window#setBackground(Color)
3564      * @see Window#setShape(Shape)
3565      * @see Frame#isUndecorated
3566      * @see Dialog#isUndecorated
3567      * @see GraphicsDevice.WindowTranslucency
3568      * @see GraphicsDevice#isWindowTranslucencySupported(GraphicsDevice.WindowTranslucency)
3569      *
3570      * @since 1.7
3571      */
3572     public void setOpacity(float opacity) {
3573         synchronized (getTreeLock()) {
3574             if (opacity < 0.0f || opacity > 1.0f) {
3575                 throw new IllegalArgumentException(
3576                     "The value of opacity should be in the range [0.0f .. 1.0f].");
3577             }
3578             if (opacity < 1.0f) {
3579                 GraphicsConfiguration gc = getGraphicsConfiguration();
3580                 GraphicsDevice gd = gc.getDevice();
3581                 if (gc.getDevice().getFullScreenWindow() == this) {
3582                     throw new IllegalComponentStateException(
3583                         "Setting opacity for full-screen window is not supported.");
3584                 }
3585                 if (!gd.isWindowTranslucencySupported(
3586                     GraphicsDevice.WindowTranslucency.TRANSLUCENT))
3587                 {
3588                     throw new UnsupportedOperationException(
3589                         "TRANSLUCENT translucency is not supported.");
3590                 }
3591             }
3592             this.opacity = opacity;
3593             WindowPeer peer = (WindowPeer)getPeer();
3594             if (peer != null) {
3595                 peer.setOpacity(opacity);
3596             }
3597         }
3598     }
3599 
3600     /**
3601      * Returns the shape of the window.
3602      *
3603      * The value returned by this method may not be the same as
3604      * previously set with {@code setShape(shape)}, but it is guaranteed
3605      * to represent the same shape.
3606      *
3607      * @return the shape of the window or {@code null} if no
3608      *     shape is specified for the window
3609      *
3610      * @see Window#setShape(Shape)
3611      * @see GraphicsDevice.WindowTranslucency
3612      *
3613      * @since 1.7
3614      */
3615     public Shape getShape() {
3616         synchronized (getTreeLock()) {
3617             return shape == null ? null : new Path2D.Float(shape);
3618         }
3619     }
3620 
3621     /**
3622      * Sets the shape of the window.
3623      * <p>
3624      * Setting a shape cuts off some parts of the window. Only the parts that
3625      * belong to the given {@link Shape} remain visible and clickable. If
3626      * the shape argument is {@code null}, this method restores the default
3627      * shape, making the window rectangular on most platforms.
3628      * <p>
3629      * The following conditions must be met to set a non-null shape:
3630      * <ul>
3631      * <li>The {@link GraphicsDevice.WindowTranslucency#PERPIXEL_TRANSPARENT
3632      * PERPIXEL_TRANSPARENT} translucency must be supported by the
3633      * underlying system
3634      * <li>The window must be undecorated (see {@link Frame#setUndecorated}
3635      * and {@link Dialog#setUndecorated})
3636      * <li>The window must not be in full-screen mode (see {@link
3637      * GraphicsDevice#setFullScreenWindow(Window)})
3638      * </ul>
3639      * <p>
3640      * If the requested shape is not {@code null}, and any of the above
3641      * conditions are not met, the shape of this window will not change,
3642      * and either the {@code UnsupportedOperationException} or {@code
3643      * IllegalComponentStateException} will be thrown.
3644      * <p>
3645      * The tranlucency levels of individual pixels may also be effected by the
3646      * alpha component of their color (see {@link Window#setBackground(Color)}) and the
3647      * opacity value (see {@link #setOpacity(float)}). See {@link
3648      * GraphicsDevice.WindowTranslucency} for more details.
3649      *
3650      * @param shape the shape to set to the window
3651      *
3652      * @throws IllegalComponentStateException if the shape is not {@code
3653      *     null} and the window is decorated
3654      * @throws IllegalComponentStateException if the shape is not {@code
3655      *     null} and the window is in full-screen mode
3656      * @throws UnsupportedOperationException if the shape is not {@code
3657      *     null} and {@link GraphicsDevice.WindowTranslucency#PERPIXEL_TRANSPARENT
3658      *     PERPIXEL_TRANSPARENT} translucency is not supported
3659      *
3660      * @see Window#getShape()
3661      * @see Window#setBackground(Color)
3662      * @see Window#setOpacity(float)
3663      * @see Frame#isUndecorated
3664      * @see Dialog#isUndecorated
3665      * @see GraphicsDevice.WindowTranslucency
3666      * @see GraphicsDevice#isWindowTranslucencySupported(GraphicsDevice.WindowTranslucency)
3667      *
3668      * @since 1.7
3669      */
3670     public void setShape(Shape shape) {
3671         synchronized (getTreeLock()) {
3672             if (shape != null) {
3673                 GraphicsConfiguration gc = getGraphicsConfiguration();
3674                 GraphicsDevice gd = gc.getDevice();
3675                 if (gc.getDevice().getFullScreenWindow() == this) {
3676                     throw new IllegalComponentStateException(
3677                         "Setting shape for full-screen window is not supported.");
3678                 }
3679                 if (!gd.isWindowTranslucencySupported(
3680                         GraphicsDevice.WindowTranslucency.PERPIXEL_TRANSPARENT))
3681                 {
3682                     throw new UnsupportedOperationException(
3683                         "PERPIXEL_TRANSPARENT translucency is not supported.");
3684                 }
3685             }
3686             this.shape = (shape == null) ? null : new Path2D.Float(shape);
3687             WindowPeer peer = (WindowPeer)getPeer();
3688             if (peer != null) {
3689                 peer.applyShape(shape == null ? null : Region.getInstance(shape, null));
3690             }
3691         }
3692     }
3693 
3694     /**
3695      * Gets the background color of this window.
3696      * <p>
3697      * Note that the alpha component of the returned color indicates whether
3698      * the window is in the non-opaque (per-pixel translucent) mode.
3699      *
3700      * @return this component's background color
3701      *
3702      * @see Window#setBackground(Color)
3703      * @see Window#isOpaque
3704      * @see GraphicsDevice.WindowTranslucency
3705      */
3706     @Override
3707     public Color getBackground() {
3708         return super.getBackground();
3709     }
3710 
3711     /**
3712      * Sets the background color of this window.
3713      * <p>
3714      * If the windowing system supports the {@link
3715      * GraphicsDevice.WindowTranslucency#PERPIXEL_TRANSLUCENT PERPIXEL_TRANSLUCENT}
3716      * tranclucency, the alpha component of the given background color
3717      * may effect the mode of operation for this window: it indicates whether
3718      * this window must be opaque (alpha equals {@code 1.0f}) or per-pixel translucent
3719      * (alpha is less than {@code 1.0f}). If the given background color is
3720      * {@code null}, the window is considered completely opaque.
3721      * <p>
3722      * All the following conditions must be met to enable the per-pixel
3723      * transparency mode for this window:
3724      * <ul>
3725      * <li>The {@link GraphicsDevice.WindowTranslucency#PERPIXEL_TRANSLUCENT
3726      * PERPIXEL_TRANSLUCENT} translucency must be supported by the graphics
3727      * device where this window is located
3728      * <li>The window must be undecorated (see {@link Frame#setUndecorated}
3729      * and {@link Dialog#setUndecorated})
3730      * <li>The window must not be in full-screen mode (see {@link
3731      * GraphicsDevice#setFullScreenWindow(Window)})
3732      * </ul>
3733      * <p>
3734      * If the alpha component of the requested background color is less than
3735      * {@code 1.0f}, and any of the above conditions are not met, the background
3736      * color of this window will not change, the alpha component of the given
3737      * background color will not affect the mode of operation for this window,
3738      * and either the {@code UnsupportedOperationException} or {@code
3739      * IllegalComponentStateException} will be thrown.
3740      * <p>
3741      * When the window is per-pixel translucent, the drawing sub-system
3742      * respects the alpha value of each individual pixel. If a pixel gets
3743      * painted with the alpha color component equal to zero, it becomes
3744      * visually transparent. If the alpha of the pixel is equal to 1.0f, the
3745      * pixel is fully opaque. Interim values of the alpha color component make
3746      * the pixel semi-transparent. In this mode, the background of the window
3747      * gets painted with the alpha value of the given background color. If the
3748      * alpha value of the argument of this method is equal to {@code 0}, the
3749      * background is not painted at all.
3750      * <p>
3751      * The actual level of translucency of a given pixel also depends on window
3752      * opacity (see {@link #setOpacity(float)}), as well as the current shape of
3753      * this window (see {@link #setShape(Shape)}).
3754      * <p>
3755      * Note that painting a pixel with the alpha value of {@code 0} may or may
3756      * not disable the mouse event handling on this pixel. This is a
3757      * platform-dependent behavior. To make sure the mouse events do not get
3758      * dispatched to a particular pixel, the pixel must be excluded from the
3759      * shape of the window.
3760      * <p>
3761      * Enabling the per-pixel translucency mode may change the graphics
3762      * configuration of this window due to the native platform requirements.
3763      *
3764      * @param bgColor the color to become this window's background color.
3765      *
3766      * @throws IllegalComponentStateException if the alpha value of the given
3767      *     background color is less than {@code 1.0f} and the window is decorated
3768      * @throws IllegalComponentStateException if the alpha value of the given
3769      *     background color is less than {@code 1.0f} and the window is in
3770      *     full-screen mode
3771      * @throws UnsupportedOperationException if the alpha value of the given
3772      *     background color is less than {@code 1.0f} and {@link
3773      *     GraphicsDevice.WindowTranslucency#PERPIXEL_TRANSLUCENT
3774      *     PERPIXEL_TRANSLUCENT} translucency is not supported
3775      *
3776      * @see Window#getBackground
3777      * @see Window#isOpaque
3778      * @see Window#setOpacity(float)
3779      * @see Window#setShape(Shape)
3780      * @see Frame#isUndecorated
3781      * @see Dialog#isUndecorated
3782      * @see GraphicsDevice.WindowTranslucency
3783      * @see GraphicsDevice#isWindowTranslucencySupported(GraphicsDevice.WindowTranslucency)
3784      * @see GraphicsConfiguration#isTranslucencyCapable()
3785      */
3786     @Override
3787     public void setBackground(Color bgColor) {
3788         Color oldBg = getBackground();
3789         super.setBackground(bgColor);
3790         if (oldBg != null && oldBg.equals(bgColor)) {
3791             return;
3792         }
3793         int oldAlpha = oldBg != null ? oldBg.getAlpha() : 255;
3794         int alpha = bgColor != null ? bgColor.getAlpha() : 255;
3795         if ((oldAlpha == 255) && (alpha < 255)) { // non-opaque window
3796             GraphicsConfiguration gc = getGraphicsConfiguration();
3797             GraphicsDevice gd = gc.getDevice();
3798             if (gc.getDevice().getFullScreenWindow() == this) {
3799                 throw new IllegalComponentStateException(
3800                     "Making full-screen window non opaque is not supported.");
3801             }
3802             if (!gc.isTranslucencyCapable()) {
3803                 GraphicsConfiguration capableGC = gd.getTranslucencyCapableGC();
3804                 if (capableGC == null) {
3805                     throw new UnsupportedOperationException(
3806                         "PERPIXEL_TRANSLUCENT translucency is not supported");
3807                 }
3808                 setGraphicsConfiguration(capableGC);
3809             }
3810             setLayersOpaque(this, false);
3811         } else if ((oldAlpha < 255) && (alpha == 255)) {
3812             setLayersOpaque(this, true);
3813         }
3814         WindowPeer peer = (WindowPeer)getPeer();
3815         if (peer != null) {
3816             peer.setOpaque(alpha == 255);
3817         }
3818     }
3819 
3820     /**
3821      * Indicates if the window is currently opaque.
3822      * <p>
3823      * The method returns {@code false} if the background color of the window
3824      * is not {@code null} and the alpha component of the color is less than
3825      * {@code 1.0f}. The method returns {@code true} otherwise.
3826      *
3827      * @return {@code true} if the window is opaque, {@code false} otherwise
3828      *
3829      * @see Window#getBackground
3830      * @see Window#setBackground(Color)
3831      * @since 1.7
3832      */
3833     @Override
3834     public boolean isOpaque() {
3835         Color bg = getBackground();
3836         return bg != null ? bg.getAlpha() == 255 : true;
3837     }
3838 
3839     private void updateWindow() {
3840         synchronized (getTreeLock()) {
3841             WindowPeer peer = (WindowPeer)getPeer();
3842             if (peer != null) {
3843                 peer.updateWindow();
3844             }
3845         }
3846     }
3847 
3848     /**
3849      * {@inheritDoc}
3850      *
3851      * @since 1.7
3852      */
3853     @Override
3854     public void paint(Graphics g) {
3855         if (!isOpaque()) {
3856             Graphics gg = g.create();
3857             try {
3858                 if (gg instanceof Graphics2D) {
3859                     gg.setColor(getBackground());
3860                     ((Graphics2D)gg).setComposite(AlphaComposite.getInstance(AlphaComposite.SRC));
3861                     gg.fillRect(0, 0, getWidth(), getHeight());
3862                 }
3863             } finally {
3864                 gg.dispose();
3865             }
3866         }
3867         super.paint(g);
3868     }
3869 
3870     private static void setLayersOpaque(Component component, boolean isOpaque) {
3871         // Shouldn't use instanceof to avoid loading Swing classes
3872         //    if it's a pure AWT application.
3873         if (SunToolkit.isInstanceOf(component, "javax.swing.RootPaneContainer")) {
3874             javax.swing.RootPaneContainer rpc = (javax.swing.RootPaneContainer)component;
3875             javax.swing.JRootPane root = rpc.getRootPane();
3876             javax.swing.JLayeredPane lp = root.getLayeredPane();
3877             Container c = root.getContentPane();
3878             javax.swing.JComponent content =
3879                 (c instanceof javax.swing.JComponent) ? (javax.swing.JComponent)c : null;
3880             lp.setOpaque(isOpaque);
3881             root.setOpaque(isOpaque);
3882             if (content != null) {
3883                 content.setOpaque(isOpaque);
3884 
3885                 // Iterate down one level to see whether we have a JApplet
3886                 // (which is also a RootPaneContainer) which requires processing
3887                 int numChildren = content.getComponentCount();
3888                 if (numChildren > 0) {
3889                     Component child = content.getComponent(0);
3890                     // It's OK to use instanceof here because we've
3891                     // already loaded the RootPaneContainer class by now
3892                     if (child instanceof javax.swing.RootPaneContainer) {
3893                         setLayersOpaque(child, isOpaque);
3894                     }
3895                 }
3896             }
3897         }
3898     }
3899 
3900 
3901     // ************************** MIXING CODE *******************************
3902 
3903     // A window has a parent, but it does NOT have a container
3904     @Override
3905     final Container getContainer() {
3906         return null;
3907     }
3908 
3909     /**
3910      * Applies the shape to the component
3911      * @param shape Shape to be applied to the component
3912      */
3913     @Override
3914     final void applyCompoundShape(Region shape) {
3915         // The shape calculated by mixing code is not intended to be applied
3916         // to windows or frames
3917     }
3918 
3919     @Override
3920     final void applyCurrentShape() {
3921         // The shape calculated by mixing code is not intended to be applied
3922         // to windows or frames
3923     }
3924 
3925     @Override
3926     final void mixOnReshaping() {
3927         // The shape calculated by mixing code is not intended to be applied
3928         // to windows or frames
3929     }
3930 
3931     @Override
3932     final Point getLocationOnWindow() {
3933         return new Point(0, 0);
3934     }
3935 
3936     // ****************** END OF MIXING CODE ********************************
3937 
3938     /**
3939      * Limit the given double value with the given range.
3940      */
3941     private static double limit(double value, double min, double max) {
3942         value = Math.max(value, min);
3943         value = Math.min(value, max);
3944         return value;
3945     }
3946 
3947     /**
3948      * Calculate the position of the security warning.
3949      *
3950      * This method gets the window location/size as reported by the native
3951      * system since the locally cached values may represent outdated data.
3952      *
3953      * The method is used from the native code, or via AWTAccessor.
3954      *
3955      * NOTE: this method is invoked on the toolkit thread, and therefore is not
3956      * supposed to become public/user-overridable.
3957      */
3958     private Point2D calculateSecurityWarningPosition(double x, double y,
3959             double w, double h)
3960     {
3961         // The position according to the spec of SecurityWarning.setPosition()
3962         double wx = x + w * securityWarningAlignmentX + securityWarningPointX;
3963         double wy = y + h * securityWarningAlignmentY + securityWarningPointY;
3964 
3965         // First, make sure the warning is not too far from the window bounds
3966         wx = Window.limit(wx,
3967                 x - securityWarningWidth - 2,
3968                 x + w + 2);
3969         wy = Window.limit(wy,
3970                 y - securityWarningHeight - 2,
3971                 y + h + 2);
3972 
3973         // Now make sure the warning window is visible on the screen
3974         GraphicsConfiguration graphicsConfig =
3975             getGraphicsConfiguration_NoClientCode();
3976         Rectangle screenBounds = graphicsConfig.getBounds();
3977         Insets screenInsets =
3978             Toolkit.getDefaultToolkit().getScreenInsets(graphicsConfig);
3979 
3980         wx = Window.limit(wx,
3981                 screenBounds.x + screenInsets.left,
3982                 screenBounds.x + screenBounds.width - screenInsets.right
3983                 - securityWarningWidth);
3984         wy = Window.limit(wy,
3985                 screenBounds.y + screenInsets.top,
3986                 screenBounds.y + screenBounds.height - screenInsets.bottom
3987                 - securityWarningHeight);
3988 
3989         return new Point2D.Double(wx, wy);
3990     }
3991 
3992     static {
3993         AWTAccessor.setWindowAccessor(new AWTAccessor.WindowAccessor() {
3994             public float getOpacity(Window window) {
3995                 return window.opacity;
3996             }
3997             public void setOpacity(Window window, float opacity) {
3998                 window.setOpacity(opacity);
3999             }
4000             public Shape getShape(Window window) {
4001                 return window.getShape();
4002             }
4003             public void setShape(Window window, Shape shape) {
4004                 window.setShape(shape);
4005             }
4006             public void setOpaque(Window window, boolean opaque) {
4007                 Color bg = window.getBackground();
4008                 if (bg == null) {
4009                     bg = new Color(0, 0, 0, 0);
4010                 }
4011                 window.setBackground(new Color(bg.getRed(), bg.getGreen(), bg.getBlue(),
4012                                                opaque ? 255 : 0));
4013             }
4014             public void updateWindow(Window window) {
4015                 window.updateWindow();
4016             }
4017 
4018             public Dimension getSecurityWarningSize(Window window) {
4019                 return new Dimension(window.securityWarningWidth,
4020                         window.securityWarningHeight);
4021             }
4022 
4023             public void setSecurityWarningSize(Window window, int width, int height)
4024             {
4025                 window.securityWarningWidth = width;
4026                 window.securityWarningHeight = height;
4027             }
4028 
4029             public void setSecurityWarningPosition(Window window,
4030                     Point2D point, float alignmentX, float alignmentY)
4031             {
4032                 window.securityWarningPointX = point.getX();
4033                 window.securityWarningPointY = point.getY();
4034                 window.securityWarningAlignmentX = alignmentX;
4035                 window.securityWarningAlignmentY = alignmentY;
4036 
4037                 synchronized (window.getTreeLock()) {
4038                     WindowPeer peer = (WindowPeer)window.getPeer();
4039                     if (peer != null) {
4040                         peer.repositionSecurityWarning();
4041                     }
4042                 }
4043             }
4044 
4045             public Point2D calculateSecurityWarningPosition(Window window,
4046                     double x, double y, double w, double h)
4047             {
4048                 return window.calculateSecurityWarningPosition(x, y, w, h);
4049             }
4050 
4051             public void setLWRequestStatus(Window changed, boolean status) {
4052                 changed.syncLWRequests = status;
4053             }
4054 
4055             public boolean isAutoRequestFocus(Window w) {
4056                 return w.autoRequestFocus;
4057             }
4058 
4059             public boolean isTrayIconWindow(Window w) {
4060                 return w.isTrayIconWindow;
4061             }
4062 
4063             public void setTrayIconWindow(Window w, boolean isTrayIconWindow) {
4064                 w.isTrayIconWindow = isTrayIconWindow;
4065             }
4066         }); // WindowAccessor
4067     } // static
4068 
4069     // a window doesn't need to be updated in the Z-order.
4070     @Override
4071     void updateZOrder() {}
4072 
4073 } // class Window
4074 
4075 
4076 /**
4077  * This class is no longer used, but is maintained for Serialization
4078  * backward-compatibility.
4079  */
4080 class FocusManager implements java.io.Serializable {
4081     Container focusRoot;
4082     Component focusOwner;
4083 
4084     /*
4085      * JDK 1.1 serialVersionUID
4086      */
4087     static final long serialVersionUID = 2491878825643557906L;
4088 }