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	/*
	* Copyright (c) 1995, 2017, Oracle and/or its affiliates. All rights reserved.
	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
	*
	* This code is free software; you can redistribute it and/or modify it
	* under the terms of the GNU General Public License version 2 only, as
	* published by the Free Software Foundation. Oracle designates this
	* particular file as subject to the "Classpath" exception as provided
	* by Oracle in the LICENSE file that accompanied this code.
	*
	* This code is distributed in the hope that it will be useful, but WITHOUT
	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
	* version 2 for more details (a copy is included in the LICENSE file that
	* accompanied this code).
	*
	* You should have received a copy of the GNU General Public License version
	* 2 along with this work; if not, write to the Free Software Foundation,
	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
	*
	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
	* or visit www.oracle.com if you need additional information or have any
	* questions.
	*/
	package java.awt;

	import java.awt.event.*;
	import java.awt.geom.Path2D;
	import java.awt.geom.Point2D;
	import java.awt.im.InputContext;
	import java.awt.image.BufferStrategy;
	import java.awt.image.BufferedImage;
	import java.awt.peer.ComponentPeer;
	import java.awt.peer.WindowPeer;
	import java.beans.PropertyChangeListener;
	import java.io.IOException;
	import java.io.ObjectInputStream;
	import java.io.ObjectOutputStream;
	import java.io.OptionalDataException;
	import java.io.Serializable;
	import java.lang.ref.WeakReference;
	import java.lang.reflect.InvocationTargetException;
	import java.security.AccessController;
	import java.util.ArrayList;
	import java.util.Arrays;
	import java.util.EventListener;
	import java.util.Locale;
	import java.util.ResourceBundle;
	import java.util.Set;
	import java.util.Vector;
	import java.util.concurrent.atomic.AtomicBoolean;
	import javax.accessibility.*;
	import sun.awt.AWTAccessor;
	import sun.awt.AppContext;
	import sun.awt.CausedFocusEvent;
	import sun.awt.SunToolkit;
	import sun.awt.util.IdentityArrayList;
	import sun.java2d.Disposer;
	import sun.java2d.pipe.Region;
	import sun.security.action.GetPropertyAction;
	import sun.security.util.SecurityConstants;
	import sun.util.logging.PlatformLogger;

	/**
	* A {@code Window} object is a top-level window with no borders and no
	* menubar.
	* The default layout for a window is {@code BorderLayout}.
	* <p>
	* A window must have either a frame, dialog, or another window defined as its
	* owner when it's constructed.
	* <p>
	* In a multi-screen environment, you can create a {@code Window}
	* on a different screen device by constructing the {@code Window}
	* with {@link #Window(Window, GraphicsConfiguration)}. The
	* {@code GraphicsConfiguration} object is one of the
	* {@code GraphicsConfiguration} objects of the target screen device.
	* <p>
	* In a virtual device multi-screen environment in which the desktop
	* area could span multiple physical screen devices, the bounds of all
	* configurations are relative to the virtual device coordinate system.
	* The origin of the virtual-coordinate system is at the upper left-hand
	* corner of the primary physical screen. Depending on the location of
	* the primary screen in the virtual device, negative coordinates are
	* possible, as shown in the following figure.
	* <p>
	* <img src="doc-files/MultiScreen.gif"
	* alt="Diagram shows virtual device containing 4 physical screens. Primary physical screen shows coords (0,0), other screen shows (-80,-100)."
	* style="float:center; margin: 7px 10px;">
	* <p>
	* In such an environment, when calling {@code setLocation},
	* you must pass a virtual coordinate to this method. Similarly,
	* calling {@code getLocationOnScreen} on a {@code Window} returns
	* virtual device coordinates. Call the {@code getBounds} method
	* of a {@code GraphicsConfiguration} to find its origin in the virtual
	* coordinate system.
	* <p>
	* The following code sets the location of a {@code Window}
	* at (10, 10) relative to the origin of the physical screen
	* of the corresponding {@code GraphicsConfiguration}. If the
	* bounds of the {@code GraphicsConfiguration} is not taken
	* into account, the {@code Window} location would be set
	* at (10, 10) relative to the virtual-coordinate system and would appear
	* on the primary physical screen, which might be different from the
	* physical screen of the specified {@code GraphicsConfiguration}.
	*
	* <pre>
	* Window w = new Window(Window owner, GraphicsConfiguration gc);
	* Rectangle bounds = gc.getBounds();
	* w.setLocation(10 + bounds.x, 10 + bounds.y);
	* </pre>
	*
	* <p>
	* Note: the location and size of top-level windows (including
	* {@code Window}s, {@code Frame}s, and {@code Dialog}s)
	* are under the control of the desktop's window management system.
	* Calls to {@code setLocation}, {@code setSize}, and
	* {@code setBounds} are requests (not directives) which are
	* forwarded to the window management system. Every effort will be
	* made to honor such requests. However, in some cases the window
	* management system may ignore such requests, or modify the requested
	* geometry in order to place and size the {@code Window} in a way
	* that more closely matches the desktop settings.
	* <p>
	* Due to the asynchronous nature of native event handling, the results
	* returned by {@code getBounds}, {@code getLocation},
	* {@code getLocationOnScreen}, and {@code getSize} might not
	* reflect the actual geometry of the Window on screen until the last
	* request has been processed. During the processing of subsequent
	* requests these values might change accordingly while the window
	* management system fulfills the requests.
	* <p>
	* An application may set the size and location of an invisible
	* {@code Window} arbitrarily, but the window management system may
	* subsequently change its size and/or location when the
	* {@code Window} is made visible. One or more {@code ComponentEvent}s
	* will be generated to indicate the new geometry.
	* <p>
	* Windows are capable of generating the following WindowEvents:
	* WindowOpened, WindowClosed, WindowGainedFocus, WindowLostFocus.
	*
	* @author Sami Shaio
	* @author Arthur van Hoff
	* @see WindowEvent
	* @see #addWindowListener
	* @see java.awt.BorderLayout
	* @since JDK1.0
	*/
	public class Window extends Container implements Accessible {

	/**
	* Enumeration of available <i>window types</i>.
	*
	* A window type defines the generic visual appearance and behavior of a
	* top-level window. For example, the type may affect the kind of
	* decorations of a decorated {@code Frame} or {@code Dialog} instance.
	* <p>
	* Some platforms may not fully support a certain window type. Depending on
	* the level of support, some properties of the window type may be
	* disobeyed.
	*
	* @see #getType
	* @see #setType
	* @since 1.7
	*/
	public static enum Type {
	/**
	* Represents a <i>normal</i> window.
	*
	* This is the default type for objects of the {@code Window} class or
	* its descendants. Use this type for regular top-level windows.
	*/
	NORMAL,

	/**
	* Represents a <i>utility</i> window.
	*
	* A utility window is usually a small window such as a toolbar or a
	* palette. The native system may render the window with smaller
	* title-bar if the window is either a {@code Frame} or a {@code
	* Dialog} object, and if it has its decorations enabled.
	*/
	UTILITY,

	/**
	* Represents a <i>popup</i> window.
	*
	* A popup window is a temporary window such as a drop-down menu or a
	* tooltip. On some platforms, windows of that type may be forcibly
	* made undecorated even if they are instances of the {@code Frame} or
	* {@code Dialog} class, and have decorations enabled.
	*/
	POPUP
	}

	/**
	* This represents the warning message that is
	* to be displayed in a non secure window. ie :
	* a window that has a security manager installed that denies
	* {@code AWTPermission("showWindowWithoutWarningBanner")}.
	* This message can be displayed anywhere in the window.
	*
	* @serial
	* @see #getWarningString
	*/
	String warningString;

	/**
	* {@code icons} is the graphical way we can
	* represent the frames and dialogs.
	* {@code Window} can't display icon but it's
	* being inherited by owned {@code Dialog}s.
	*
	* @serial
	* @see #getIconImages
	* @see #setIconImages
	*/
	transient java.util.List<Image> icons;

	/**
	* Holds the reference to the component which last had focus in this window
	* before it lost focus.
	*/
	private transient Component temporaryLostComponent;

	static boolean systemSyncLWRequests = false;
	boolean syncLWRequests = false;
	transient boolean beforeFirstShow = true;
	private transient boolean disposing = false;
	transient WindowDisposerRecord disposerRecord = null;

	static final int OPENED = 0x01;

	/**
	* An Integer value representing the Window State.
	*
	* @serial
	* @since 1.2
	* @see #show
	*/
	int state;

	/**
	* A boolean value representing Window always-on-top state
	* @since 1.5
	* @serial
	* @see #setAlwaysOnTop
	* @see #isAlwaysOnTop
	*/
	private boolean alwaysOnTop;

	/**
	* Contains all the windows that have a peer object associated,
	* i. e. between addNotify() and removeNotify() calls. The list
	* of all Window instances can be obtained from AppContext object.
	*
	* @since 1.6
	*/
	private static final IdentityArrayList<Window> allWindows = new IdentityArrayList<Window>();

	/**
	* A vector containing all the windows this
	* window currently owns.
	* @since 1.2
	* @see #getOwnedWindows
	*/
	transient Vector<WeakReference<Window>> ownedWindowList =
	new Vector<WeakReference<Window>>();

	/*
	* We insert a weak reference into the Vector of all Windows in AppContext
	* instead of 'this' so that garbage collection can still take place
	* correctly.
	*/
	private transient WeakReference<Window> weakThis;

	transient boolean showWithParent;

	/**
	* Contains the modal dialog that blocks this window, or null
	* if the window is unblocked.
	*
	* @since 1.6
	*/
	transient Dialog modalBlocker;

	/**
	* @serial
	*
	* @see java.awt.Dialog.ModalExclusionType
	* @see #getModalExclusionType
	* @see #setModalExclusionType
	*
	* @since 1.6
	*/
	Dialog.ModalExclusionType modalExclusionType;

	transient WindowListener windowListener;
	transient WindowStateListener windowStateListener;
	transient WindowFocusListener windowFocusListener;

	transient InputContext inputContext;
	private transient Object inputContextLock = new Object();

	/**
	* Unused. Maintained for serialization backward-compatibility.
	*
	* @serial
	* @since 1.2
	*/
	private FocusManager focusMgr;

	/**
	* Indicates whether this Window can become the focused Window.
	*
	* @serial
	* @see #getFocusableWindowState
	* @see #setFocusableWindowState
	* @since 1.4
	*/
	private boolean focusableWindowState = true;

	/**
	* Indicates whether this window should receive focus on
	* subsequently being shown (with a call to {@code setVisible(true)}), or
	* being moved to the front (with a call to {@code toFront()}).
	*
	* @serial
	* @see #setAutoRequestFocus
	* @see #isAutoRequestFocus
	* @since 1.7
	*/
	private volatile boolean autoRequestFocus = true;

	/*
	* Indicates that this window is being shown. This flag is set to true at
	* the beginning of show() and to false at the end of show().
	*
	* @see #show()
	* @see Dialog#shouldBlock
	*/
	transient boolean isInShow = false;

	/**
	* The opacity level of the window
	*
	* @serial
	* @see #setOpacity(float)
	* @see #getOpacity()
	* @since 1.7
	*/
	private volatile float opacity = 1.0f;

	/**
	* The shape assigned to this window. This field is set to {@code null} if
	* no shape is set (rectangular window).
	*
	* @serial
	* @see #getShape()
	* @see #setShape(Shape)
	* @since 1.7
	*/
	private Shape shape = null;

	private static final String base = "win";
	private static int nameCounter = 0;

	/*
	* JDK 1.1 serialVersionUID
	*/
	private static final long serialVersionUID = 4497834738069338734L;

	private static final PlatformLogger log = PlatformLogger.getLogger("java.awt.Window");

	private static final boolean locationByPlatformProp;

	transient boolean isTrayIconWindow = false;

	/**
	* These fields are initialized in the native peer code
	* or via AWTAccessor's WindowAccessor.
	*/
	private transient volatile int securityWarningWidth = 0;
	private transient volatile int securityWarningHeight = 0;

	/**
	* These fields represent the desired location for the security
	* warning if this window is untrusted.
	* See com.sun.awt.SecurityWarning for more details.
	*/
	private transient double securityWarningPointX = 2.0;
	private transient double securityWarningPointY = 0.0;
	private transient float securityWarningAlignmentX = RIGHT_ALIGNMENT;
	private transient float securityWarningAlignmentY = TOP_ALIGNMENT;

	static {
	/* ensure that the necessary native libraries are loaded */
	Toolkit.loadLibraries();
	if (!GraphicsEnvironment.isHeadless()) {
	initIDs();
	}

	String s = java.security.AccessController.doPrivileged(
	new GetPropertyAction("java.awt.syncLWRequests"));
	systemSyncLWRequests = (s != null && s.equals("true"));
	s = java.security.AccessController.doPrivileged(
	new GetPropertyAction("java.awt.Window.locationByPlatform"));
	locationByPlatformProp = (s != null && s.equals("true"));
	}

	/**
	* Initialize JNI field and method IDs for fields that may be
	accessed from C.
	*/
	private static native void initIDs();

	/**
	* Constructs a new, initially invisible window in default size with the
	* specified {@code GraphicsConfiguration}.
	* <p>
	* If there is a security manager, then it is invoked to check
	* {@code AWTPermission("showWindowWithoutWarningBanner")}
	* to determine whether or not the window must be displayed with
	* a warning banner.
	*
	* @param gc the {@code GraphicsConfiguration} of the target screen
	* device. If {@code gc} is {@code null}, the system default
	* {@code GraphicsConfiguration} is assumed
	* @exception IllegalArgumentException if {@code gc}
	* is not from a screen device
	* @exception HeadlessException when
	* {@code GraphicsEnvironment.isHeadless()} returns {@code true}
	*
	* @see java.awt.GraphicsEnvironment#isHeadless
	*/
	Window(GraphicsConfiguration gc) {
	init(gc);
	}

	transient Object anchor = new Object();
	static class WindowDisposerRecord implements sun.java2d.DisposerRecord {
	WeakReference<Window> owner;
	final WeakReference<Window> weakThis;
	final WeakReference<AppContext> context;

	WindowDisposerRecord(AppContext context, Window victim) {
	weakThis = victim.weakThis;
	this.context = new WeakReference<AppContext>(context);
	}

	public void updateOwner() {
	Window victim = weakThis.get();
	owner = (victim == null)
	? null
	: new WeakReference<Window>(victim.getOwner());
	}

	public void dispose() {
	if (owner != null) {
	Window parent = owner.get();
	if (parent != null) {
	parent.removeOwnedWindow(weakThis);
	}
	}
	AppContext ac = context.get();
	if (null != ac) {
	Window.removeFromWindowList(ac, weakThis);
	}
	}
	}

	private GraphicsConfiguration initGC(GraphicsConfiguration gc) {
	GraphicsEnvironment.checkHeadless();

	if (gc == null) {
	gc = GraphicsEnvironment.getLocalGraphicsEnvironment().
	getDefaultScreenDevice().getDefaultConfiguration();
	}
	setGraphicsConfiguration(gc);

	return gc;
	}

	private void init(GraphicsConfiguration gc) {
	GraphicsEnvironment.checkHeadless();

	syncLWRequests = systemSyncLWRequests;

	weakThis = new WeakReference<Window>(this);
	addToWindowList();

	setWarningString();
	this.cursor = Cursor.getPredefinedCursor(Cursor.DEFAULT_CURSOR);
	this.visible = false;

	gc = initGC(gc);

	if (gc.getDevice().getType() !=
	GraphicsDevice.TYPE_RASTER_SCREEN) {
	throw new IllegalArgumentException("not a screen device");
	}
	setLayout(new BorderLayout());

	/* offset the initial location with the original of the screen */
	/* and any insets */
	Rectangle screenBounds = gc.getBounds();
	Insets screenInsets = getToolkit().getScreenInsets(gc);
	int x = getX() + screenBounds.x + screenInsets.left;
	int y = getY() + screenBounds.y + screenInsets.top;
	if (x != this.x \|\| y != this.y) {
	setLocation(x, y);
	/* reset after setLocation */
	setLocationByPlatform(locationByPlatformProp);
	}

	modalExclusionType = Dialog.ModalExclusionType.NO_EXCLUDE;
	disposerRecord = new WindowDisposerRecord(appContext, this);
	sun.java2d.Disposer.addRecord(anchor, disposerRecord);

	SunToolkit.checkAndSetPolicy(this);
	}

	/**
	* Constructs a new, initially invisible window in the default size.
	* <p>
	* If there is a security manager set, it is invoked to check
	* {@code AWTPermission("showWindowWithoutWarningBanner")}.
	* If that check fails with a {@code SecurityException} then a warning
	* banner is created.
	*
	* @exception HeadlessException when
	* {@code GraphicsEnvironment.isHeadless()} returns {@code true}
	*
	* @see java.awt.GraphicsEnvironment#isHeadless
	*/
	Window() throws HeadlessException {
	GraphicsEnvironment.checkHeadless();
	init((GraphicsConfiguration)null);
	}

	/**
	* Constructs a new, initially invisible window with the specified
	* {@code Frame} as its owner. The window will not be focusable
	* unless its owner is showing on the screen.
	* <p>
	* If there is a security manager set, it is invoked to check
	* {@code AWTPermission("showWindowWithoutWarningBanner")}.
	* If that check fails with a {@code SecurityException} then a warning
	* banner is created.
	*
	* @param owner the {@code Frame} to act as owner or {@code null}
	* if this window has no owner
	* @exception IllegalArgumentException if the {@code owner}'s
	* {@code GraphicsConfiguration} is not from a screen device
	* @exception HeadlessException when
	* {@code GraphicsEnvironment.isHeadless} returns {@code true}
	*
	* @see java.awt.GraphicsEnvironment#isHeadless
	* @see #isShowing
	*/
	public Window(Frame owner) {
	this(owner == null ? (GraphicsConfiguration)null :
	owner.getGraphicsConfiguration());
	ownedInit(owner);
	}

	/**
	* Constructs a new, initially invisible window with the specified
	* {@code Window} as its owner. This window will not be focusable
	* unless its nearest owning {@code Frame} or {@code Dialog}
	* is showing on the screen.
	* <p>
	* If there is a security manager set, it is invoked to check
	* {@code AWTPermission("showWindowWithoutWarningBanner")}.
	* If that check fails with a {@code SecurityException} then a
	* warning banner is created.
	*
	* @param owner the {@code Window} to act as owner or
	* {@code null} if this window has no owner
	* @exception IllegalArgumentException if the {@code owner}'s
	* {@code GraphicsConfiguration} is not from a screen device
	* @exception HeadlessException when
	* {@code GraphicsEnvironment.isHeadless()} returns
	* {@code true}
	*
	* @see java.awt.GraphicsEnvironment#isHeadless
	* @see #isShowing
	*
	* @since 1.2
	*/
	public Window(Window owner) {
	this(owner == null ? (GraphicsConfiguration)null :
	owner.getGraphicsConfiguration());
	ownedInit(owner);
	}

	/**
	* Constructs a new, initially invisible window with the specified owner
	* {@code Window} and a {@code GraphicsConfiguration}
	* of a screen device. The Window will not be focusable unless
	* its nearest owning {@code Frame} or {@code Dialog}
	* is showing on the screen.
	* <p>
	* If there is a security manager set, it is invoked to check
	* {@code AWTPermission("showWindowWithoutWarningBanner")}. If that
	* check fails with a {@code SecurityException} then a warning banner
	* is created.
	*
	* @param owner the window to act as owner or {@code null}
	* if this window has no owner
	* @param gc the {@code GraphicsConfiguration} of the target
	* screen device; if {@code gc} is {@code null},
	* the system default {@code GraphicsConfiguration} is assumed
	* @exception IllegalArgumentException if {@code gc}
	* is not from a screen device
	* @exception HeadlessException when
	* {@code GraphicsEnvironment.isHeadless()} returns
	* {@code true}
	*
	* @see java.awt.GraphicsEnvironment#isHeadless
	* @see GraphicsConfiguration#getBounds
	* @see #isShowing
	* @since 1.3
	*/
	public Window(Window owner, GraphicsConfiguration gc) {
	this(gc);
	ownedInit(owner);
	}

	private void ownedInit(Window owner) {
	this.parent = owner;
	if (owner != null) {
	owner.addOwnedWindow(weakThis);
	if (owner.isAlwaysOnTop()) {
	try {
	setAlwaysOnTop(true);
	} catch (SecurityException ignore) {
	}
	}
	}

	// WindowDisposerRecord requires a proper value of parent field.
	disposerRecord.updateOwner();
	}

	/**
	* Construct a name for this component. Called by getName() when the
	* name is null.
	*/
	String constructComponentName() {
	synchronized (Window.class) {
	return base + nameCounter++;
	}
	}

	/**
	* Returns the sequence of images to be displayed as the icon for this window.
	* <p>
	* This method returns a copy of the internally stored list, so all operations
	* on the returned object will not affect the window's behavior.
	*
	* @return the copy of icon images' list for this window, or
	* empty list if this window doesn't have icon images.
	* @see #setIconImages
	* @see #setIconImage(Image)
	* @since 1.6
	*/
	public java.util.List<Image> getIconImages() {
	java.util.List<Image> icons = this.icons;
	if (icons == null \|\| icons.size() == 0) {
	return new ArrayList<Image>();
	}
	return new ArrayList<Image>(icons);
	}

	/**
	* Sets the sequence of images to be displayed as the icon
	* for this window. Subsequent calls to {@code getIconImages} will
	* always return a copy of the {@code icons} list.
	* <p>
	* Depending on the platform capabilities one or several images
	* of different dimensions will be used as the window's icon.
	* <p>
	* The {@code icons} list is scanned for the images of most
	* appropriate dimensions from the beginning. If the list contains
	* several images of the same size, the first will be used.
	* <p>
	* Ownerless windows with no icon specified use platfrom-default icon.
	* The icon of an owned window may be inherited from the owner
	* unless explicitly overridden.
	* Setting the icon to {@code null} or empty list restores
	* the default behavior.
	* <p>
	* Note : Native windowing systems may use different images of differing
	* dimensions to represent a window, depending on the context (e.g.
	* window decoration, window list, taskbar, etc.). They could also use
	* just a single image for all contexts or no image at all.
	*
	* @param icons the list of icon images to be displayed.
	* @see #getIconImages()
	* @see #setIconImage(Image)
	* @since 1.6
	*/
	public synchronized void setIconImages(java.util.List<? extends Image> icons) {
	this.icons = (icons == null) ? new ArrayList<Image>() :
	new ArrayList<Image>(icons);
	WindowPeer peer = (WindowPeer)this.peer;
	if (peer != null) {
	peer.updateIconImages();
	}
	// Always send a property change event
	firePropertyChange("iconImage", null, null);
	}

	/**
	* Sets the image to be displayed as the icon for this window.
	* <p>
	* This method can be used instead of {@link #setIconImages setIconImages()}
	* to specify a single image as a window's icon.
	* <p>
	* The following statement:
	* <pre>
	* setIconImage(image);
	* </pre>
	* is equivalent to:
	* <pre>
	* ArrayList<Image> imageList = new ArrayList<Image>();
	* imageList.add(image);
	* setIconImages(imageList);
	* </pre>
	* <p>
	* Note : Native windowing systems may use different images of differing
	* dimensions to represent a window, depending on the context (e.g.
	* window decoration, window list, taskbar, etc.). They could also use
	* just a single image for all contexts or no image at all.
	*
	* @param image the icon image to be displayed.
	* @see #setIconImages
	* @see #getIconImages()
	* @since 1.6
	*/
	public void setIconImage(Image image) {
	ArrayList<Image> imageList = new ArrayList<Image>();
	if (image != null) {
	imageList.add(image);
	}
	setIconImages(imageList);
	}

	/**
	* Makes this Window displayable by creating the connection to its
	* native screen resource.
	* This method is called internally by the toolkit and should
	* not be called directly by programs.
	* @see Component#isDisplayable
	* @see Container#removeNotify
	* @since JDK1.0
	*/
	public void addNotify() {
	synchronized (getTreeLock()) {
	Container parent = this.parent;
	if (parent != null && parent.getPeer() == null) {
	parent.addNotify();
	}
	if (peer == null) {
	peer = getToolkit().createWindow(this);
	}
	synchronized (allWindows) {
	allWindows.add(this);
	}
	super.addNotify();
	}
	}

	/**
	* {@inheritDoc}
	*/
	public void removeNotify() {
	synchronized (getTreeLock()) {
	synchronized (allWindows) {
	allWindows.remove(this);
	}
	super.removeNotify();
	}
	}

	/**
	* Causes this Window to be sized to fit the preferred size
	* and layouts of its subcomponents. The resulting width and
	* height of the window are automatically enlarged if either
	* of dimensions is less than the minimum size as specified
	* by the previous call to the {@code setMinimumSize} method.
	* <p>
	* If the window and/or its owner are not displayable yet,
	* both of them are made displayable before calculating
	* the preferred size. The Window is validated after its
	* size is being calculated.
	*
	* @see Component#isDisplayable
	* @see #setMinimumSize
	*/
	public void pack() {
	Container parent = this.parent;
	if (parent != null && parent.getPeer() == null) {
	parent.addNotify();
	}
	if (peer == null) {
	addNotify();
	}
	Dimension newSize = getPreferredSize();
	if (peer != null) {
	setClientSize(newSize.width, newSize.height);
	}

	if(beforeFirstShow) {
	isPacked = true;
	}

	validateUnconditionally();
	}

	/**
	* Sets the minimum size of this window to a constant
	* value. Subsequent calls to {@code getMinimumSize}
	* will always return this value. If current window's
	* size is less than {@code minimumSize} the size of the
	* window is automatically enlarged to honor the minimum size.
	* <p>
	* If the {@code setSize} or {@code setBounds} methods
	* are called afterwards with a width or height less than
	* that was specified by the {@code setMinimumSize} method
	* the window is automatically enlarged to meet
	* the {@code minimumSize} value. The {@code minimumSize}
	* value also affects the behaviour of the {@code pack} method.
	* <p>
	* The default behavior is restored by setting the minimum size
	* parameter to the {@code null} value.
	* <p>
	* Resizing operation may be restricted if the user tries
	* to resize window below the {@code minimumSize} value.
	* This behaviour is platform-dependent.
	*
	* @param minimumSize the new minimum size of this window
	* @see Component#setMinimumSize
	* @see #getMinimumSize
	* @see #isMinimumSizeSet
	* @see #setSize(Dimension)
	* @see #pack
	* @since 1.6
	*/
	public void setMinimumSize(Dimension minimumSize) {
	synchronized (getTreeLock()) {
	super.setMinimumSize(minimumSize);
	Dimension size = getSize();
	if (isMinimumSizeSet()) {
	if (size.width < minimumSize.width \|\| size.height < minimumSize.height) {
	int nw = Math.max(width, minimumSize.width);
	int nh = Math.max(height, minimumSize.height);
	setSize(nw, nh);
	}
	}
	if (peer != null) {
	((WindowPeer)peer).updateMinimumSize();
	}
	}
	}

	/**
	* {@inheritDoc}
	* <p>
	* The {@code d.width} and {@code d.height} values
	* are automatically enlarged if either is less than
	* the minimum size as specified by previous call to
	* {@code setMinimumSize}.
	* <p>
	* The method changes the geometry-related data. Therefore,
	* the native windowing system may ignore such requests, or it may modify
	* the requested data, so that the {@code Window} object is placed and sized
	* in a way that corresponds closely to the desktop settings.
	*
	* @see #getSize
	* @see #setBounds
	* @see #setMinimumSize
	* @since 1.6
	*/
	public void setSize(Dimension d) {
	super.setSize(d);
	}

	/**
	* {@inheritDoc}
	* <p>
	* The {@code width} and {@code height} values
	* are automatically enlarged if either is less than
	* the minimum size as specified by previous call to
	* {@code setMinimumSize}.
	* <p>
	* The method changes the geometry-related data. Therefore,
	* the native windowing system may ignore such requests, or it may modify
	* the requested data, so that the {@code Window} object is placed and sized
	* in a way that corresponds closely to the desktop settings.
	*
	* @see #getSize
	* @see #setBounds
	* @see #setMinimumSize
	* @since 1.6
	*/
	public void setSize(int width, int height) {
	super.setSize(width, height);
	}

	/**
	* {@inheritDoc}
	* <p>
	* The method changes the geometry-related data. Therefore,
	* the native windowing system may ignore such requests, or it may modify
	* the requested data, so that the {@code Window} object is placed and sized
	* in a way that corresponds closely to the desktop settings.
	*/
	@Override
	public void setLocation(int x, int y) {
	super.setLocation(x, y);
	}

	/**
	* {@inheritDoc}
	* <p>
	* The method changes the geometry-related data. Therefore,
	* the native windowing system may ignore such requests, or it may modify
	* the requested data, so that the {@code Window} object is placed and sized
	* in a way that corresponds closely to the desktop settings.
	*/
	@Override
	public void setLocation(Point p) {
	super.setLocation(p);
	}

	/**
	* @deprecated As of JDK version 1.1,
	* replaced by {@code setBounds(int, int, int, int)}.
	*/
	@Deprecated
	public void reshape(int x, int y, int width, int height) {
	if (isMinimumSizeSet()) {
	Dimension minSize = getMinimumSize();
	if (width < minSize.width) {
	width = minSize.width;
	}
	if (height < minSize.height) {
	height = minSize.height;
	}
	}
	super.reshape(x, y, width, height);
	}

	void setClientSize(int w, int h) {
	synchronized (getTreeLock()) {
	setBoundsOp(ComponentPeer.SET_CLIENT_SIZE);
	setBounds(x, y, w, h);
	}
	}

	static private final AtomicBoolean
	beforeFirstWindowShown = new AtomicBoolean(true);

	final void closeSplashScreen() {
	if (isTrayIconWindow) {
	return;
	}
	if (beforeFirstWindowShown.getAndSet(false)) {
	// We don't use SplashScreen.getSplashScreen() to avoid instantiating
	// the object if it hasn't been requested by user code explicitly
	SunToolkit.closeSplashScreen();
	SplashScreen.markClosed();
	}
	}

	/**
	* Shows or hides this {@code Window} depending on the value of parameter
	* {@code b}.
	* <p>
	* If the method shows the window then the window is also made
	* focused under the following conditions:
	* <ul>
	* <li> The {@code Window} meets the requirements outlined in the
	* {@link #isFocusableWindow} method.
	* <li> The {@code Window}'s {@code autoRequestFocus} property is of the {@code true} value.
	* <li> Native windowing system allows the {@code Window} to get focused.
	* </ul>
	* There is an exception for the second condition (the value of the
	* {@code autoRequestFocus} property). The property is not taken into account if the
	* window is a modal dialog, which blocks the currently focused window.
	* <p>
	* Developers must never assume that the window is the focused or active window
	* until it receives a WINDOW_GAINED_FOCUS or WINDOW_ACTIVATED event.
	* @param b if {@code true}, makes the {@code Window} visible,
	* otherwise hides the {@code Window}.
	* If the {@code Window} and/or its owner
	* are not yet displayable, both are made displayable. The
	* {@code Window} will be validated prior to being made visible.
	* If the {@code Window} is already visible, this will bring the
	* {@code Window} to the front.<p>
	* If {@code false}, hides this {@code Window}, its subcomponents, and all
	* of its owned children.
	* The {@code Window} and its subcomponents can be made visible again
	* with a call to {@code #setVisible(true)}.
	* @see java.awt.Component#isDisplayable
	* @see java.awt.Component#setVisible
	* @see java.awt.Window#toFront
	* @see java.awt.Window#dispose
	* @see java.awt.Window#setAutoRequestFocus
	* @see java.awt.Window#isFocusableWindow
	*/
	public void setVisible(boolean b) {
	super.setVisible(b);
	}

	/**
	* Makes the Window visible. If the Window and/or its owner
	* are not yet displayable, both are made displayable. The
	* Window will be validated prior to being made visible.
	* If the Window is already visible, this will bring the Window
	* to the front.
	* @see Component#isDisplayable
	* @see #toFront
	* @deprecated As of JDK version 1.5, replaced by
	* {@link #setVisible(boolean)}.
	*/
	@Deprecated
	public void show() {
	if (peer == null) {
	addNotify();
	}
	validateUnconditionally();

	isInShow = true;
	if (visible) {
	toFront();
	} else {
	beforeFirstShow = false;
	closeSplashScreen();
	Dialog.checkShouldBeBlocked(this);
	super.show();
	locationByPlatform = false;
	for (int i = 0; i < ownedWindowList.size(); i++) {
	Window child = ownedWindowList.elementAt(i).get();
	if ((child != null) && child.showWithParent) {
	child.show();
	child.showWithParent = false;
	} // endif
	} // endfor
	if (!isModalBlocked()) {
	updateChildrenBlocking();
	} else {
	// fix for 6532736: after this window is shown, its blocker
	// should be raised to front
	modalBlocker.toFront_NoClientCode();
	}
	if (this instanceof Frame \|\| this instanceof Dialog) {
	updateChildFocusableWindowState(this);
	}
	}
	isInShow = false;

	// If first time shown, generate WindowOpened event
	if ((state & OPENED) == 0) {
	postWindowEvent(WindowEvent.WINDOW_OPENED);
	state \|= OPENED;
	}
	}

	static void updateChildFocusableWindowState(Window w) {
	if (w.getPeer() != null && w.isShowing()) {
	((WindowPeer)w.getPeer()).updateFocusableWindowState();
	}
	for (int i = 0; i < w.ownedWindowList.size(); i++) {
	Window child = w.ownedWindowList.elementAt(i).get();
	if (child != null) {
	updateChildFocusableWindowState(child);
	}
	}
	}

	synchronized void postWindowEvent(int id) {
	if (windowListener != null
	\|\| (eventMask & AWTEvent.WINDOW_EVENT_MASK) != 0
	\|\| Toolkit.enabledOnToolkit(AWTEvent.WINDOW_EVENT_MASK)) {
	WindowEvent e = new WindowEvent(this, id);
	Toolkit.getEventQueue().postEvent(e);
	}
	}

	/**
	* Hide this Window, its subcomponents, and all of its owned children.
	* The Window and its subcomponents can be made visible again
	* with a call to {@code show}.
	* @see #show
	* @see #dispose
	* @deprecated As of JDK version 1.5, replaced by
	* {@link #setVisible(boolean)}.
	*/
	@Deprecated
	public void hide() {
	synchronized(ownedWindowList) {
	for (int i = 0; i < ownedWindowList.size(); i++) {
	Window child = ownedWindowList.elementAt(i).get();
	if ((child != null) && child.visible) {
	child.hide();
	child.showWithParent = true;
	}
	}
	}
	if (isModalBlocked()) {
	modalBlocker.unblockWindow(this);
	}
	super.hide();
	locationByPlatform = false;
	}

	final void clearMostRecentFocusOwnerOnHide() {
	/* do nothing */
	}

	/**
	* Releases all of the native screen resources used by this
	* {@code Window}, its subcomponents, and all of its owned
	* children. That is, the resources for these {@code Component}s
	* will be destroyed, any memory they consume will be returned to the
	* OS, and they will be marked as undisplayable.
	* <p>
	* The {@code Window} and its subcomponents can be made displayable
	* again by rebuilding the native resources with a subsequent call to
	* {@code pack} or {@code show}. The states of the recreated
	* {@code Window} and its subcomponents will be identical to the
	* states of these objects at the point where the {@code Window}
	* was disposed (not accounting for additional modifications between
	* those actions).
	* <p>
	* <b>Note</b>: When the last displayable window
	* within the Java virtual machine (VM) is disposed of, the VM may
	* terminate. See <a href="doc-files/AWTThreadIssues.html#Autoshutdown">
	* AWT Threading Issues</a> for more information.
	* @see Component#isDisplayable
	* @see #pack
	* @see #show
	*/
	public void dispose() {
	doDispose();
	}

	/*
	* Fix for 4872170.
	* If dispose() is called on parent then its children have to be disposed as well
	* as reported in javadoc. So we need to implement this functionality even if a
	* child overrides dispose() in a wrong way without calling super.dispose().
	*/
	void disposeImpl() {
	dispose();
	if (getPeer() != null) {
	doDispose();
	}
	}

	void doDispose() {
	class DisposeAction implements Runnable {
	public void run() {
	disposing = true;
	try {
	// Check if this window is the fullscreen window for the
	// device. Exit the fullscreen mode prior to disposing
	// of the window if that's the case.
	GraphicsDevice gd = getGraphicsConfiguration().getDevice();
	if (gd.getFullScreenWindow() == Window.this) {
	gd.setFullScreenWindow(null);
	}

	Object[] ownedWindowArray;
	synchronized(ownedWindowList) {
	ownedWindowArray = new Object[ownedWindowList.size()];
	ownedWindowList.copyInto(ownedWindowArray);
	}
	for (int i = 0; i < ownedWindowArray.length; i++) {
	Window child = (Window) (((WeakReference)
	(ownedWindowArray[i])).get());
	if (child != null) {
	child.disposeImpl();
	}
	}
	hide();
	beforeFirstShow = true;
	removeNotify();
	synchronized (inputContextLock) {
	if (inputContext != null) {
	inputContext.dispose();
	inputContext = null;
	}
	}
	clearCurrentFocusCycleRootOnHide();
	} finally {
	disposing = false;
	}
	}
	}
	boolean fireWindowClosedEvent = isDisplayable();
	DisposeAction action = new DisposeAction();
	if (EventQueue.isDispatchThread()) {
	action.run();
	}
	else {
	try {
	EventQueue.invokeAndWait(this, action);
	}
	catch (InterruptedException e) {
	System.err.println("Disposal was interrupted:");
	e.printStackTrace();
	}
	catch (InvocationTargetException e) {
	System.err.println("Exception during disposal:");
	e.printStackTrace();
	}
	}
	// Execute outside the Runnable because postWindowEvent is
	// synchronized on (this). We don't need to synchronize the call
	// on the EventQueue anyways.
	if (fireWindowClosedEvent) {
	postWindowEvent(WindowEvent.WINDOW_CLOSED);
	}
	}

	/*
	* Should only be called while holding the tree lock.
	* It's overridden here because parent == owner in Window,
	* and we shouldn't adjust counter on owner
	*/
	void adjustListeningChildrenOnParent(long mask, int num) {
	}

	// Should only be called while holding tree lock
	void adjustDecendantsOnParent(int num) {
	// do nothing since parent == owner and we shouldn't
	// ajust counter on owner
	}

	/**
	* If this Window is visible, brings this Window to the front and may make
	* it the focused Window.
	* <p>
	* Places this Window at the top of the stacking order and shows it in
	* front of any other Windows in this VM. No action will take place if this
	* Window is not visible. Some platforms do not allow Windows which own
	* other Windows to appear on top of those owned Windows. Some platforms
	* may not permit this VM to place its Windows above windows of native
	* applications, or Windows of other VMs. This permission may depend on
	* whether a Window in this VM is already focused. Every attempt will be
	* made to move this Window as high as possible in the stacking order;
	* however, developers should not assume that this method will move this
	* Window above all other windows in every situation.
	* <p>
	* Developers must never assume that this Window is the focused or active
	* Window until this Window receives a WINDOW_GAINED_FOCUS or WINDOW_ACTIVATED
	* event. On platforms where the top-most window is the focused window, this
	* method will <b>probably</b> focus this Window (if it is not already focused)
	* under the following conditions:
	* <ul>
	* <li> The window meets the requirements outlined in the
	* {@link #isFocusableWindow} method.
	* <li> The window's property {@code autoRequestFocus} is of the
	* {@code true} value.
	* <li> Native windowing system allows the window to get focused.
	* </ul>
	* On platforms where the stacking order does not typically affect the focused
	* window, this method will <b>probably</b> leave the focused and active
	* Windows unchanged.
	* <p>
	* If this method causes this Window to be focused, and this Window is a
	* Frame or a Dialog, it will also become activated. If this Window is
	* focused, but it is not a Frame or a Dialog, then the first Frame or
	* Dialog that is an owner of this Window will be activated.
	* <p>
	* If this window is blocked by modal dialog, then the blocking dialog
	* is brought to the front and remains above the blocked window.
	*
	* @see #toBack
	* @see #setAutoRequestFocus
	* @see #isFocusableWindow
	*/
	public void toFront() {
	toFront_NoClientCode();
	}

	// This functionality is implemented in a final package-private method
	// to insure that it cannot be overridden by client subclasses.
	final void toFront_NoClientCode() {
	if (visible) {
	WindowPeer peer = (WindowPeer)this.peer;
	if (peer != null) {
	peer.toFront();
	}
	if (isModalBlocked()) {
	modalBlocker.toFront_NoClientCode();
	}
	}
	}

	/**
	* If this Window is visible, sends this Window to the back and may cause
	* it to lose focus or activation if it is the focused or active Window.
	* <p>
	* Places this Window at the bottom of the stacking order and shows it
	* behind any other Windows in this VM. No action will take place is this
	* Window is not visible. Some platforms do not allow Windows which are
	* owned by other Windows to appear below their owners. Every attempt will
	* be made to move this Window as low as possible in the stacking order;
	* however, developers should not assume that this method will move this
	* Window below all other windows in every situation.
	* <p>
	* Because of variations in native windowing systems, no guarantees about
	* changes to the focused and active Windows can be made. Developers must
	* never assume that this Window is no longer the focused or active Window
	* until this Window receives a WINDOW_LOST_FOCUS or WINDOW_DEACTIVATED
	* event. On platforms where the top-most window is the focused window,
	* this method will <b>probably</b> cause this Window to lose focus. In
	* that case, the next highest, focusable Window in this VM will receive
	* focus. On platforms where the stacking order does not typically affect
	* the focused window, this method will <b>probably</b> leave the focused
	* and active Windows unchanged.
	*
	* @see #toFront
	*/
	public void toBack() {
	toBack_NoClientCode();
	}

	// This functionality is implemented in a final package-private method
	// to insure that it cannot be overridden by client subclasses.
	final void toBack_NoClientCode() {
	if(isAlwaysOnTop()) {
	try {
	setAlwaysOnTop(false);
	}catch(SecurityException e) {
	}
	}
	if (visible) {
	WindowPeer peer = (WindowPeer)this.peer;
	if (peer != null) {
	peer.toBack();
	}
	}
	}

	/**
	* Returns the toolkit of this frame.
	* @return the toolkit of this window.
	* @see Toolkit
	* @see Toolkit#getDefaultToolkit
	* @see Component#getToolkit
	*/
	public Toolkit getToolkit() {
	return Toolkit.getDefaultToolkit();
	}

	/**
	* Gets the warning string that is displayed with this window.
	* If this window is insecure, the warning string is displayed
	* somewhere in the visible area of the window. A window is
	* insecure if there is a security manager and the security
	* manager denies
	* {@code AWTPermission("showWindowWithoutWarningBanner")}.
	* <p>
	* If the window is secure, then {@code getWarningString}
	* returns {@code null}. If the window is insecure, this
	* method checks for the system property
	* {@code awt.appletWarning}
	* and returns the string value of that property.
	* @return the warning string for this window.
	*/
	public final String getWarningString() {
	return warningString;
	}

	private void setWarningString() {
	warningString = null;
	SecurityManager sm = System.getSecurityManager();
	if (sm != null) {
	try {
	sm.checkPermission(SecurityConstants.AWT.TOPLEVEL_WINDOW_PERMISSION);
	} catch (SecurityException se) {
	// make sure the privileged action is only
	// for getting the property! We don't want the
	// above checkPermission call to always succeed!
	warningString = AccessController.doPrivileged(
	new GetPropertyAction("awt.appletWarning",
	"Java Applet Window"));
	}
	}
	}

	/**
	* Gets the {@code Locale} object that is associated
	* with this window, if the locale has been set.
	* If no locale has been set, then the default locale
	* is returned.
	* @return the locale that is set for this window.
	* @see java.util.Locale
	* @since JDK1.1
	*/
	public Locale getLocale() {
	if (this.locale == null) {
	return Locale.getDefault();
	}
	return this.locale;
	}

	/**
	* Gets the input context for this window. A window always has an input context,
	* which is shared by subcomponents unless they create and set their own.
	* @see Component#getInputContext
	* @since 1.2
	*/
	public InputContext getInputContext() {
	synchronized (inputContextLock) {
	if (inputContext == null) {
	inputContext = InputContext.getInstance();
	}
	}
	return inputContext;
	}

	/**
	* Set the cursor image to a specified cursor.
	* <p>
	* The method may have no visual effect if the Java platform
	* implementation and/or the native system do not support
	* changing the mouse cursor shape.
	* @param cursor One of the constants defined
	* by the {@code Cursor} class. If this parameter is null
	* then the cursor for this window will be set to the type
	* Cursor.DEFAULT_CURSOR.
	* @see Component#getCursor
	* @see Cursor
	* @since JDK1.1
	*/
	public void setCursor(Cursor cursor) {
	if (cursor == null) {
	cursor = Cursor.getPredefinedCursor(Cursor.DEFAULT_CURSOR);
	}
	super.setCursor(cursor);
	}

	/**
	* Returns the owner of this window.
	* @since 1.2
	*/
	public Window getOwner() {
	return getOwner_NoClientCode();
	}
	final Window getOwner_NoClientCode() {
	return (Window)parent;
	}

	/**
	* Return an array containing all the windows this
	* window currently owns.
	* @since 1.2
	*/
	public Window[] getOwnedWindows() {
	return getOwnedWindows_NoClientCode();
	}
	final Window[] getOwnedWindows_NoClientCode() {
	Window realCopy[];

	synchronized(ownedWindowList) {
	// Recall that ownedWindowList is actually a Vector of
	// WeakReferences and calling get() on one of these references
	// may return null. Make two arrays-- one the size of the
	// Vector (fullCopy with size fullSize), and one the size of
	// all non-null get()s (realCopy with size realSize).
	int fullSize = ownedWindowList.size();
	int realSize = 0;
	Window fullCopy[] = new Window[fullSize];

	for (int i = 0; i < fullSize; i++) {
	fullCopy[realSize] = ownedWindowList.elementAt(i).get();

	if (fullCopy[realSize] != null) {
	realSize++;
	}
	}

	if (fullSize != realSize) {
	realCopy = Arrays.copyOf(fullCopy, realSize);
	} else {
	realCopy = fullCopy;
	}
	}

	return realCopy;
	}

	boolean isModalBlocked() {
	return modalBlocker != null;
	}

	void setModalBlocked(Dialog blocker, boolean blocked, boolean peerCall) {
	this.modalBlocker = blocked ? blocker : null;
	if (peerCall) {
	WindowPeer peer = (WindowPeer)this.peer;
	if (peer != null) {
	peer.setModalBlocked(blocker, blocked);
	}
	}
	}

	Dialog getModalBlocker() {
	return modalBlocker;
	}

	/*
	* Returns a list of all displayable Windows, i. e. all the
	* Windows which peer is not null.
	*
	* @see #addNotify
	* @see #removeNotify
	*/
	static IdentityArrayList<Window> getAllWindows() {
	synchronized (allWindows) {
	IdentityArrayList<Window> v = new IdentityArrayList<Window>();
	v.addAll(allWindows);
	return v;
	}
	}

	static IdentityArrayList<Window> getAllUnblockedWindows() {
	synchronized (allWindows) {
	IdentityArrayList<Window> unblocked = new IdentityArrayList<Window>();
	for (int i = 0; i < allWindows.size(); i++) {
	Window w = allWindows.get(i);
	if (!w.isModalBlocked()) {
	unblocked.add(w);
	}
	}
	return unblocked;
	}
	}

	private static Window[] getWindows(AppContext appContext) {
	synchronized (Window.class) {
	Window realCopy[];
	@SuppressWarnings("unchecked")
	Vector<WeakReference<Window>> windowList =
	(Vector<WeakReference<Window>>)appContext.get(Window.class);
	if (windowList != null) {
	int fullSize = windowList.size();
	int realSize = 0;
	Window fullCopy[] = new Window[fullSize];
	for (int i = 0; i < fullSize; i++) {
	Window w = windowList.get(i).get();
	if (w != null) {
	fullCopy[realSize++] = w;
	}
	}
	if (fullSize != realSize) {
	realCopy = Arrays.copyOf(fullCopy, realSize);
	} else {
	realCopy = fullCopy;
	}
	} else {
	realCopy = new Window[0];
	}
	return realCopy;
	}
	}

	/**
	* Returns an array of all {@code Window}s, both owned and ownerless,
	* created by this application.
	* If called from an applet, the array includes only the {@code Window}s
	* accessible by that applet.
	* <p>
	* <b>Warning:</b> this method may return system created windows, such
	* as a print dialog. Applications should not assume the existence of
	* these dialogs, nor should an application assume anything about these
	* dialogs such as component positions, {@code LayoutManager}s
	* or serialization.
	*
	* @see Frame#getFrames
	* @see Window#getOwnerlessWindows
	*
	* @since 1.6
	*/
	public static Window[] getWindows() {
	return getWindows(AppContext.getAppContext());
	}

	/**
	* Returns an array of all {@code Window}s created by this application
	* that have no owner. They include {@code Frame}s and ownerless
	* {@code Dialog}s and {@code Window}s.
	* If called from an applet, the array includes only the {@code Window}s
	* accessible by that applet.
	* <p>
	* <b>Warning:</b> this method may return system created windows, such
	* as a print dialog. Applications should not assume the existence of
	* these dialogs, nor should an application assume anything about these
	* dialogs such as component positions, {@code LayoutManager}s
	* or serialization.
	*
	* @see Frame#getFrames
	* @see Window#getWindows()
	*
	* @since 1.6
	*/
	public static Window[] getOwnerlessWindows() {
	Window[] allWindows = Window.getWindows();

	int ownerlessCount = 0;
	for (Window w : allWindows) {
	if (w.getOwner() == null) {
	ownerlessCount++;
	}
	}

	Window[] ownerless = new Window[ownerlessCount];
	int c = 0;
	for (Window w : allWindows) {
	if (w.getOwner() == null) {
	ownerless[c++] = w;
	}
	}

	return ownerless;
	}

	Window getDocumentRoot() {
	synchronized (getTreeLock()) {
	Window w = this;
	while (w.getOwner() != null) {
	w = w.getOwner();
	}
	return w;
	}
	}

	/**
	* Specifies the modal exclusion type for this window. If a window is modal
	* excluded, it is not blocked by some modal dialogs. See {@link
	* java.awt.Dialog.ModalExclusionType Dialog.ModalExclusionType} for
	* possible modal exclusion types.
	* <p>
	* If the given type is not supported, {@code NO_EXCLUDE} is used.
	* <p>
	* Note: changing the modal exclusion type for a visible window may have no
	* effect until it is hidden and then shown again.
	*
	* @param exclusionType the modal exclusion type for this window; a {@code null}
	* value is equivalent to {@link Dialog.ModalExclusionType#NO_EXCLUDE
	* NO_EXCLUDE}
	* @throws SecurityException if the calling thread does not have permission
	* to set the modal exclusion property to the window with the given
	* {@code exclusionType}
	* @see java.awt.Dialog.ModalExclusionType
	* @see java.awt.Window#getModalExclusionType
	* @see java.awt.Toolkit#isModalExclusionTypeSupported
	*
	* @since 1.6
	*/
	public void setModalExclusionType(Dialog.ModalExclusionType exclusionType) {
	if (exclusionType == null) {
	exclusionType = Dialog.ModalExclusionType.NO_EXCLUDE;
	}
	if (!Toolkit.getDefaultToolkit().isModalExclusionTypeSupported(exclusionType)) {
	exclusionType = Dialog.ModalExclusionType.NO_EXCLUDE;
	}
	if (modalExclusionType == exclusionType) {
	return;
	}
	if (exclusionType == Dialog.ModalExclusionType.TOOLKIT_EXCLUDE) {
	SecurityManager sm = System.getSecurityManager();
	if (sm != null) {
	sm.checkPermission(SecurityConstants.AWT.TOOLKIT_MODALITY_PERMISSION);
	}
	}
	modalExclusionType = exclusionType;

	// if we want on-fly changes, we need to uncomment the lines below
	// and override the method in Dialog to use modalShow() instead
	// of updateChildrenBlocking()
	/*
	if (isModalBlocked()) {
	modalBlocker.unblockWindow(this);
	}
	Dialog.checkShouldBeBlocked(this);
	updateChildrenBlocking();
	*/
	}

	/**
	* Returns the modal exclusion type of this window.
	*
	* @return the modal exclusion type of this window
	*
	* @see java.awt.Dialog.ModalExclusionType
	* @see java.awt.Window#setModalExclusionType
	*
	* @since 1.6
	*/
	public Dialog.ModalExclusionType getModalExclusionType() {
	return modalExclusionType;
	}

	boolean isModalExcluded(Dialog.ModalExclusionType exclusionType) {
	if ((modalExclusionType != null) &&
	modalExclusionType.compareTo(exclusionType) >= 0)
	{
	return true;
	}
	Window owner = getOwner_NoClientCode();
	return (owner != null) && owner.isModalExcluded(exclusionType);
	}

	void updateChildrenBlocking() {
	Vector<Window> childHierarchy = new Vector<Window>();
	Window[] ownedWindows = getOwnedWindows();
	for (int i = 0; i < ownedWindows.length; i++) {
	childHierarchy.add(ownedWindows[i]);
	}
	int k = 0;
	while (k < childHierarchy.size()) {
	Window w = childHierarchy.get(k);
	if (w.isVisible()) {
	if (w.isModalBlocked()) {
	Dialog blocker = w.getModalBlocker();
	blocker.unblockWindow(w);
	}
	Dialog.checkShouldBeBlocked(w);
	Window[] wOwned = w.getOwnedWindows();
	for (int j = 0; j < wOwned.length; j++) {
	childHierarchy.add(wOwned[j]);
	}
	}
	k++;
	}
	}

	/**
	* Adds the specified window listener to receive window events from
	* this window.
	* If l is null, no exception is thrown and no action is performed.
	* <p>Refer to <a href="doc-files/AWTThreadIssues.html#ListenersThreads"
	* >AWT Threading Issues</a> for details on AWT's threading model.
	*
	* @param l the window listener
	* @see #removeWindowListener
	* @see #getWindowListeners
	*/
	public synchronized void addWindowListener(WindowListener l) {
	if (l == null) {
	return;
	}
	newEventsOnly = true;
	windowListener = AWTEventMulticaster.add(windowListener, l);
	}

	/**
	* Adds the specified window state listener to receive window
	* events from this window. If {@code l} is {@code null},
	* no exception is thrown and no action is performed.
	* <p>Refer to <a href="doc-files/AWTThreadIssues.html#ListenersThreads"
	* >AWT Threading Issues</a> for details on AWT's threading model.
	*
	* @param l the window state listener
	* @see #removeWindowStateListener
	* @see #getWindowStateListeners
	* @since 1.4
	*/
	public synchronized void addWindowStateListener(WindowStateListener l) {
	if (l == null) {
	return;
	}
	windowStateListener = AWTEventMulticaster.add(windowStateListener, l);
	newEventsOnly = true;
	}

	/**
	* Adds the specified window focus listener to receive window events
	* from this window.
	* If l is null, no exception is thrown and no action is performed.
	* <p>Refer to <a href="doc-files/AWTThreadIssues.html#ListenersThreads"
	* >AWT Threading Issues</a> for details on AWT's threading model.
	*
	* @param l the window focus listener
	* @see #removeWindowFocusListener
	* @see #getWindowFocusListeners
	* @since 1.4
	*/
	public synchronized void addWindowFocusListener(WindowFocusListener l) {
	if (l == null) {
	return;
	}
	windowFocusListener = AWTEventMulticaster.add(windowFocusListener, l);
	newEventsOnly = true;
	}

	/**
	* Removes the specified window listener so that it no longer
	* receives window events from this window.
	* If l is null, no exception is thrown and no action is performed.
	* <p>Refer to <a href="doc-files/AWTThreadIssues.html#ListenersThreads"
	* >AWT Threading Issues</a> for details on AWT's threading model.
	*
	* @param l the window listener
	* @see #addWindowListener
	* @see #getWindowListeners
	*/
	public synchronized void removeWindowListener(WindowListener l) {
	if (l == null) {
	return;
	}
	windowListener = AWTEventMulticaster.remove(windowListener, l);
	}

	/**
	* Removes the specified window state listener so that it no
	* longer receives window events from this window. If
	* {@code l} is {@code null}, no exception is thrown and
	* no action is performed.
	* <p>Refer to <a href="doc-files/AWTThreadIssues.html#ListenersThreads"
	* >AWT Threading Issues</a> for details on AWT's threading model.
	*
	* @param l the window state listener
	* @see #addWindowStateListener
	* @see #getWindowStateListeners
	* @since 1.4
	*/
	public synchronized void removeWindowStateListener(WindowStateListener l) {
	if (l == null) {
	return;
	}
	windowStateListener = AWTEventMulticaster.remove(windowStateListener, l);
	}

	/**
	* Removes the specified window focus listener so that it no longer
	* receives window events from this window.
	* If l is null, no exception is thrown and no action is performed.
	* <p>Refer to <a href="doc-files/AWTThreadIssues.html#ListenersThreads"
	* >AWT Threading Issues</a> for details on AWT's threading model.
	*
	* @param l the window focus listener
	* @see #addWindowFocusListener
	* @see #getWindowFocusListeners
	* @since 1.4
	*/
	public synchronized void removeWindowFocusListener(WindowFocusListener l) {
	if (l == null) {
	return;
	}
	windowFocusListener = AWTEventMulticaster.remove(windowFocusListener, l);
	}

	/**
	* Returns an array of all the window listeners
	* registered on this window.
	*
	* @return all of this window's {@code WindowListener}s
	* or an empty array if no window
	* listeners are currently registered
	*
	* @see #addWindowListener
	* @see #removeWindowListener
	* @since 1.4
	*/
	public synchronized WindowListener[] getWindowListeners() {
	return getListeners(WindowListener.class);
	}

	/**
	* Returns an array of all the window focus listeners
	* registered on this window.
	*
	* @return all of this window's {@code WindowFocusListener}s
	* or an empty array if no window focus
	* listeners are currently registered
	*
	* @see #addWindowFocusListener
	* @see #removeWindowFocusListener
	* @since 1.4
	*/
	public synchronized WindowFocusListener[] getWindowFocusListeners() {
	return getListeners(WindowFocusListener.class);
	}

	/**
	* Returns an array of all the window state listeners
	* registered on this window.
	*
	* @return all of this window's {@code WindowStateListener}s
	* or an empty array if no window state
	* listeners are currently registered
	*
	* @see #addWindowStateListener
	* @see #removeWindowStateListener
	* @since 1.4
	*/
	public synchronized WindowStateListener[] getWindowStateListeners() {
	return getListeners(WindowStateListener.class);
	}


	/**
	* Returns an array of all the objects currently registered
	* as <code><em>Foo</em>Listener</code>s
	* upon this {@code Window}.
	* <code><em>Foo</em>Listener</code>s are registered using the
	* <code>add<em>Foo</em>Listener</code> method.
	*
	* <p>
	*
	* You can specify the {@code listenerType} argument
	* with a class literal, such as
	* <code><em>Foo</em>Listener.class</code>.
	* For example, you can query a
	* {@code Window} {@code w}
	* for its window listeners with the following code:
	*
	* <pre>WindowListener[] wls = (WindowListener[])(w.getListeners(WindowListener.class));</pre>
	*
	* If no such listeners exist, this method returns an empty array.
	*
	* @param listenerType the type of listeners requested; this parameter
	* should specify an interface that descends from
	* {@code java.util.EventListener}
	* @return an array of all objects registered as
	* <code><em>Foo</em>Listener</code>s on this window,
	* or an empty array if no such
	* listeners have been added
	* @exception ClassCastException if {@code listenerType}
	* doesn't specify a class or interface that implements
	* {@code java.util.EventListener}
	* @exception NullPointerException if {@code listenerType} is {@code null}
	*
	* @see #getWindowListeners
	* @since 1.3
	*/
	public <T extends EventListener> T[] getListeners(Class<T> listenerType) {
	EventListener l = null;
	if (listenerType == WindowFocusListener.class) {
	l = windowFocusListener;
	} else if (listenerType == WindowStateListener.class) {
	l = windowStateListener;
	} else if (listenerType == WindowListener.class) {
	l = windowListener;
	} else {
	return super.getListeners(listenerType);
	}
	return AWTEventMulticaster.getListeners(l, listenerType);
	}

	// REMIND: remove when filtering is handled at lower level
	boolean eventEnabled(AWTEvent e) {
	switch(e.id) {
	case WindowEvent.WINDOW_OPENED:
	case WindowEvent.WINDOW_CLOSING:
	case WindowEvent.WINDOW_CLOSED:
	case WindowEvent.WINDOW_ICONIFIED:
	case WindowEvent.WINDOW_DEICONIFIED:
	case WindowEvent.WINDOW_ACTIVATED:
	case WindowEvent.WINDOW_DEACTIVATED:
	if ((eventMask & AWTEvent.WINDOW_EVENT_MASK) != 0 \|\|
	windowListener != null) {
	return true;
	}
	return false;
	case WindowEvent.WINDOW_GAINED_FOCUS:
	case WindowEvent.WINDOW_LOST_FOCUS:
	if ((eventMask & AWTEvent.WINDOW_FOCUS_EVENT_MASK) != 0 \|\|
	windowFocusListener != null) {
	return true;
	}
	return false;
	case WindowEvent.WINDOW_STATE_CHANGED:
	if ((eventMask & AWTEvent.WINDOW_STATE_EVENT_MASK) != 0 \|\|
	windowStateListener != null) {
	return true;
	}
	return false;
	default:
	break;
	}
	return super.eventEnabled(e);
	}

	/**
	* Processes events on this window. If the event is an
	* {@code WindowEvent}, it invokes the
	* {@code processWindowEvent} method, else it invokes its
	* superclass's {@code processEvent}.
	* <p>Note that if the event parameter is {@code null}
	* the behavior is unspecified and may result in an
	* exception.
	*
	* @param e the event
	*/
	protected void processEvent(AWTEvent e) {
	if (e instanceof WindowEvent) {
	switch (e.getID()) {
	case WindowEvent.WINDOW_OPENED:
	case WindowEvent.WINDOW_CLOSING:
	case WindowEvent.WINDOW_CLOSED:
	case WindowEvent.WINDOW_ICONIFIED:
	case WindowEvent.WINDOW_DEICONIFIED:
	case WindowEvent.WINDOW_ACTIVATED:
	case WindowEvent.WINDOW_DEACTIVATED:
	processWindowEvent((WindowEvent)e);
	break;
	case WindowEvent.WINDOW_GAINED_FOCUS:
	case WindowEvent.WINDOW_LOST_FOCUS:
	processWindowFocusEvent((WindowEvent)e);
	break;
	case WindowEvent.WINDOW_STATE_CHANGED:
	processWindowStateEvent((WindowEvent)e);
	break;
	}
	return;
	}
	super.processEvent(e);
	}

	/**
	* Processes window events occurring on this window by
	* dispatching them to any registered WindowListener objects.
	* NOTE: This method will not be called unless window events
	* are enabled for this component; this happens when one of the
	* following occurs:
	* <ul>
	* <li>A WindowListener object is registered via
	* {@code addWindowListener}
	* <li>Window events are enabled via {@code enableEvents}
	* </ul>
	* <p>Note that if the event parameter is {@code null}
	* the behavior is unspecified and may result in an
	* exception.
	*
	* @param e the window event
	* @see Component#enableEvents
	*/
	protected void processWindowEvent(WindowEvent e) {
	WindowListener listener = windowListener;
	if (listener != null) {
	switch(e.getID()) {
	case WindowEvent.WINDOW_OPENED:
	listener.windowOpened(e);
	break;
	case WindowEvent.WINDOW_CLOSING:
	listener.windowClosing(e);
	break;
	case WindowEvent.WINDOW_CLOSED:
	listener.windowClosed(e);
	break;
	case WindowEvent.WINDOW_ICONIFIED:
	listener.windowIconified(e);
	break;
	case WindowEvent.WINDOW_DEICONIFIED:
	listener.windowDeiconified(e);
	break;
	case WindowEvent.WINDOW_ACTIVATED:
	listener.windowActivated(e);
	break;
	case WindowEvent.WINDOW_DEACTIVATED:
	listener.windowDeactivated(e);
	break;
	default:
	break;
	}
	}
	}

	/**
	* Processes window focus event occurring on this window by
	* dispatching them to any registered WindowFocusListener objects.
	* NOTE: this method will not be called unless window focus events
	* are enabled for this window. This happens when one of the
	* following occurs:
	* <ul>
	* <li>a WindowFocusListener is registered via
	* {@code addWindowFocusListener}
	* <li>Window focus events are enabled via {@code enableEvents}
	* </ul>
	* <p>Note that if the event parameter is {@code null}
	* the behavior is unspecified and may result in an
	* exception.
	*
	* @param e the window focus event
	* @see Component#enableEvents
	* @since 1.4
	*/
	protected void processWindowFocusEvent(WindowEvent e) {
	WindowFocusListener listener = windowFocusListener;
	if (listener != null) {
	switch (e.getID()) {
	case WindowEvent.WINDOW_GAINED_FOCUS:
	listener.windowGainedFocus(e);
	break;
	case WindowEvent.WINDOW_LOST_FOCUS:
	listener.windowLostFocus(e);
	break;
	default:
	break;
	}
	}
	}

	/**
	* Processes window state event occurring on this window by
	* dispatching them to any registered {@code WindowStateListener}
	* objects.
	* NOTE: this method will not be called unless window state events
	* are enabled for this window. This happens when one of the
	* following occurs:
	* <ul>
	* <li>a {@code WindowStateListener} is registered via
	* {@code addWindowStateListener}
	* <li>window state events are enabled via {@code enableEvents}
	* </ul>
	* <p>Note that if the event parameter is {@code null}
	* the behavior is unspecified and may result in an
	* exception.
	*
	* @param e the window state event
	* @see java.awt.Component#enableEvents
	* @since 1.4
	*/
	protected void processWindowStateEvent(WindowEvent e) {
	WindowStateListener listener = windowStateListener;
	if (listener != null) {
	switch (e.getID()) {
	case WindowEvent.WINDOW_STATE_CHANGED:
	listener.windowStateChanged(e);
	break;
	default:
	break;
	}
	}
	}

	/**
	* Implements a debugging hook -- checks to see if
	* the user has typed <i>control-shift-F1</i>. If so,
	* the list of child windows is dumped to {@code System.out}.
	* @param e the keyboard event
	*/
	void preProcessKeyEvent(KeyEvent e) {
	// Dump the list of child windows to System.out.
	if (e.isActionKey() && e.getKeyCode() == KeyEvent.VK_F1 &&
	e.isControlDown() && e.isShiftDown() &&
	e.getID() == KeyEvent.KEY_PRESSED) {
	list(System.out, 0);
	}
	}

	void postProcessKeyEvent(KeyEvent e) {
	// Do nothing
	}


	/**
	* Sets whether this window should always be above other windows. If
	* there are multiple always-on-top windows, their relative order is
	* unspecified and platform dependent.
	* <p>
	* If some other window is already always-on-top then the
	* relative order between these windows is unspecified (depends on
	* platform). No window can be brought to be over the always-on-top
	* window except maybe another always-on-top window.
	* <p>
	* All windows owned by an always-on-top window inherit this state and
	* automatically become always-on-top. If a window ceases to be
	* always-on-top, the windows that it owns will no longer be
	* always-on-top. When an always-on-top window is sent {@link #toBack
	* toBack}, its always-on-top state is set to {@code false}.
	*
	* <p> When this method is called on a window with a value of
	* {@code true}, and the window is visible and the platform
	* supports always-on-top for this window, the window is immediately
	* brought forward, "sticking" it in the top-most position. If the
	* window isn`t currently visible, this method sets the always-on-top
	* state to {@code true} but does not bring the window forward.
	* When the window is later shown, it will be always-on-top.
	*
	* <p> When this method is called on a window with a value of
	* {@code false} the always-on-top state is set to normal. It may also
	* cause an unspecified, platform-dependent change in the z-order of
	* top-level windows, but other always-on-top windows will remain in
	* top-most position. Calling this method with a value of {@code false}
	* on a window that has a normal state has no effect.
	*
	* <p><b>Note</b>: some platforms might not support always-on-top
	* windows. To detect if always-on-top windows are supported by the
	* current platform, use {@link Toolkit#isAlwaysOnTopSupported()} and
	* {@link Window#isAlwaysOnTopSupported()}. If always-on-top mode
	* isn't supported for this window or this window's toolkit does not
	* support always-on-top windows, calling this method has no effect.
	* <p>
	* If a SecurityManager is installed, the calling thread must be
	* granted the AWTPermission "setWindowAlwaysOnTop" in
	* order to set the value of this property. If this
	* permission is not granted, this method will throw a
	* SecurityException, and the current value of the property will
	* be left unchanged.
	*
	* @param alwaysOnTop true if the window should always be above other
	* windows
	* @throws SecurityException if the calling thread does not have
	* permission to set the value of always-on-top property
	*
	* @see #isAlwaysOnTop
	* @see #toFront
	* @see #toBack
	* @see AWTPermission
	* @see #isAlwaysOnTopSupported
	* @see #getToolkit
	* @see Toolkit#isAlwaysOnTopSupported
	* @since 1.5
	*/
	public final void setAlwaysOnTop(boolean alwaysOnTop) throws SecurityException {
	SecurityManager security = System.getSecurityManager();
	if (security != null) {
	security.checkPermission(SecurityConstants.AWT.SET_WINDOW_ALWAYS_ON_TOP_PERMISSION);
	}

	boolean oldAlwaysOnTop;
	synchronized(this) {
	oldAlwaysOnTop = this.alwaysOnTop;
	this.alwaysOnTop = alwaysOnTop;
	}
	if (oldAlwaysOnTop != alwaysOnTop ) {
	if (isAlwaysOnTopSupported()) {
	WindowPeer peer = (WindowPeer)this.peer;
	synchronized(getTreeLock()) {
	if (peer != null) {
	peer.updateAlwaysOnTopState();
	}
	}
	}
	firePropertyChange("alwaysOnTop", oldAlwaysOnTop, alwaysOnTop);
	}
	setOwnedWindowsAlwaysOnTop(alwaysOnTop);
	}

	@SuppressWarnings({"rawtypes", "unchecked"})
	private void setOwnedWindowsAlwaysOnTop(boolean alwaysOnTop) {
	WeakReference<Window>[] ownedWindowArray;
	synchronized (ownedWindowList) {
	ownedWindowArray = new WeakReference[ownedWindowList.size()];
	ownedWindowList.copyInto(ownedWindowArray);
	}

	for (WeakReference<Window> ref : ownedWindowArray) {
	Window window = ref.get();
	if (window != null) {
	try {
	window.setAlwaysOnTop(alwaysOnTop);
	} catch (SecurityException ignore) {
	}
	}
	}
	}

	/**
	* Returns whether the always-on-top mode is supported for this
	* window. Some platforms may not support always-on-top windows, some
	* may support only some kinds of top-level windows; for example,
	* a platform may not support always-on-top modal dialogs.
	*
	* @return {@code true}, if the always-on-top mode is supported for
	* this window and this window's toolkit supports always-on-top windows,
	* {@code false} otherwise
	*
	* @see #setAlwaysOnTop(boolean)
	* @see #getToolkit
	* @see Toolkit#isAlwaysOnTopSupported
	* @since 1.6
	*/
	public boolean isAlwaysOnTopSupported() {
	return Toolkit.getDefaultToolkit().isAlwaysOnTopSupported();
	}


	/**
	* Returns whether this window is an always-on-top window.
	* @return {@code true}, if the window is in always-on-top state,
	* {@code false} otherwise
	* @see #setAlwaysOnTop
	* @since 1.5
	*/
	public final boolean isAlwaysOnTop() {
	return alwaysOnTop;
	}


	/**
	* Returns the child Component of this Window that has focus if this Window
	* is focused; returns null otherwise.
	*
	* @return the child Component with focus, or null if this Window is not
	* focused
	* @see #getMostRecentFocusOwner
	* @see #isFocused
	*/
	public Component getFocusOwner() {
	return (isFocused())
	? KeyboardFocusManager.getCurrentKeyboardFocusManager().
	getFocusOwner()
	: null;
	}

	/**
	* Returns the child Component of this Window that will receive the focus
	* when this Window is focused. If this Window is currently focused, this
	* method returns the same Component as {@code getFocusOwner()}. If
	* this Window is not focused, then the child Component that most recently
	* requested focus will be returned. If no child Component has ever
	* requested focus, and this is a focusable Window, then this Window's
	* initial focusable Component is returned. If no child Component has ever
	* requested focus, and this is a non-focusable Window, null is returned.
	*
	* @return the child Component that will receive focus when this Window is
	* focused
	* @see #getFocusOwner
	* @see #isFocused
	* @see #isFocusableWindow
	* @since 1.4
	*/
	public Component getMostRecentFocusOwner() {
	if (isFocused()) {
	return getFocusOwner();
	} else {
	Component mostRecent =
	KeyboardFocusManager.getMostRecentFocusOwner(this);
	if (mostRecent != null) {
	return mostRecent;
	} else {
	return (isFocusableWindow())
	? getFocusTraversalPolicy().getInitialComponent(this)
	: null;
	}
	}
	}

	/**
	* Returns whether this Window is active. Only a Frame or a Dialog may be
	* active. The native windowing system may denote the active Window or its
	* children with special decorations, such as a highlighted title bar. The
	* active Window is always either the focused Window, or the first Frame or
	* Dialog that is an owner of the focused Window.
	*
	* @return whether this is the active Window.
	* @see #isFocused
	* @since 1.4
	*/
	public boolean isActive() {
	return (KeyboardFocusManager.getCurrentKeyboardFocusManager().
	getActiveWindow() == this);
	}

	/**
	* Returns whether this Window is focused. If there exists a focus owner,
	* the focused Window is the Window that is, or contains, that focus owner.
	* If there is no focus owner, then no Window is focused.
	* <p>
	* If the focused Window is a Frame or a Dialog it is also the active
	* Window. Otherwise, the active Window is the first Frame or Dialog that
	* is an owner of the focused Window.
	*
	* @return whether this is the focused Window.
	* @see #isActive
	* @since 1.4
	*/
	public boolean isFocused() {
	return (KeyboardFocusManager.getCurrentKeyboardFocusManager().
	getGlobalFocusedWindow() == this);
	}

	/**
	* Gets a focus traversal key for this Window. (See {@code
	* setFocusTraversalKeys} for a full description of each key.)
	* <p>
	* If the traversal key has not been explicitly set for this Window,
	* then this Window's parent's traversal key is returned. If the
	* traversal key has not been explicitly set for any of this Window's
	* ancestors, then the current KeyboardFocusManager's default traversal key
	* is returned.
	*
	* @param id one of KeyboardFocusManager.FORWARD_TRAVERSAL_KEYS,
	* KeyboardFocusManager.BACKWARD_TRAVERSAL_KEYS,
	* KeyboardFocusManager.UP_CYCLE_TRAVERSAL_KEYS, or
	* KeyboardFocusManager.DOWN_CYCLE_TRAVERSAL_KEYS
	* @return the AWTKeyStroke for the specified key
	* @see Container#setFocusTraversalKeys
	* @see KeyboardFocusManager#FORWARD_TRAVERSAL_KEYS
	* @see KeyboardFocusManager#BACKWARD_TRAVERSAL_KEYS
	* @see KeyboardFocusManager#UP_CYCLE_TRAVERSAL_KEYS
	* @see KeyboardFocusManager#DOWN_CYCLE_TRAVERSAL_KEYS
	* @throws IllegalArgumentException if id is not one of
	* KeyboardFocusManager.FORWARD_TRAVERSAL_KEYS,
	* KeyboardFocusManager.BACKWARD_TRAVERSAL_KEYS,
	* KeyboardFocusManager.UP_CYCLE_TRAVERSAL_KEYS, or
	* KeyboardFocusManager.DOWN_CYCLE_TRAVERSAL_KEYS
	* @since 1.4
	*/
	@SuppressWarnings("unchecked")
	public Set<AWTKeyStroke> getFocusTraversalKeys(int id) {
	if (id < 0 \|\| id >= KeyboardFocusManager.TRAVERSAL_KEY_LENGTH) {
	throw new IllegalArgumentException("invalid focus traversal key identifier");
	}

	// Okay to return Set directly because it is an unmodifiable view
	@SuppressWarnings("rawtypes")
	Set keystrokes = (focusTraversalKeys != null)
	? focusTraversalKeys[id]
	: null;

	if (keystrokes != null) {
	return keystrokes;
	} else {
	return KeyboardFocusManager.getCurrentKeyboardFocusManager().
	getDefaultFocusTraversalKeys(id);
	}
	}

	/**
	* Does nothing because Windows must always be roots of a focus traversal
	* cycle. The passed-in value is ignored.
	*
	* @param focusCycleRoot this value is ignored
	* @see #isFocusCycleRoot
	* @see Container#setFocusTraversalPolicy
	* @see Container#getFocusTraversalPolicy
	* @since 1.4
	*/
	public final void setFocusCycleRoot(boolean focusCycleRoot) {
	}

	/**
	* Always returns {@code true} because all Windows must be roots of a
	* focus traversal cycle.
	*
	* @return {@code true}
	* @see #setFocusCycleRoot
	* @see Container#setFocusTraversalPolicy
	* @see Container#getFocusTraversalPolicy
	* @since 1.4
	*/
	public final boolean isFocusCycleRoot() {
	return true;
	}

	/**
	* Always returns {@code null} because Windows have no ancestors; they
	* represent the top of the Component hierarchy.
	*
	* @return {@code null}
	* @see Container#isFocusCycleRoot()
	* @since 1.4
	*/
	public final Container getFocusCycleRootAncestor() {
	return null;
	}

	/**
	* Returns whether this Window can become the focused Window, that is,
	* whether this Window or any of its subcomponents can become the focus
	* owner. For a Frame or Dialog to be focusable, its focusable Window state
	* must be set to {@code true}. For a Window which is not a Frame or
	* Dialog to be focusable, its focusable Window state must be set to
	* {@code true}, its nearest owning Frame or Dialog must be
	* showing on the screen, and it must contain at least one Component in
	* its focus traversal cycle. If any of these conditions is not met, then
	* neither this Window nor any of its subcomponents can become the focus
	* owner.
	*
	* @return {@code true} if this Window can be the focused Window;
	* {@code false} otherwise
	* @see #getFocusableWindowState
	* @see #setFocusableWindowState
	* @see #isShowing
	* @see Component#isFocusable
	* @since 1.4
	*/
	public final boolean isFocusableWindow() {
	// If a Window/Frame/Dialog was made non-focusable, then it is always
	// non-focusable.
	if (!getFocusableWindowState()) {
	return false;
	}

	// All other tests apply only to Windows.
	if (this instanceof Frame \|\| this instanceof Dialog) {
	return true;
	}

	// A Window must have at least one Component in its root focus
	// traversal cycle to be focusable.
	if (getFocusTraversalPolicy().getDefaultComponent(this) == null) {
	return false;
	}

	// A Window's nearest owning Frame or Dialog must be showing on the
	// screen.
	for (Window owner = getOwner(); owner != null;
	owner = owner.getOwner())
	{
	if (owner instanceof Frame \|\| owner instanceof Dialog) {
	return owner.isShowing();
	}
	}

	return false;
	}

	/**
	* Returns whether this Window can become the focused Window if it meets
	* the other requirements outlined in {@code isFocusableWindow}. If
	* this method returns {@code false}, then
	* {@code isFocusableWindow} will return {@code false} as well.
	* If this method returns {@code true}, then
	* {@code isFocusableWindow} may return {@code true} or
	* {@code false} depending upon the other requirements which must be
	* met in order for a Window to be focusable.
	* <p>
	* By default, all Windows have a focusable Window state of
	* {@code true}.
	*
	* @return whether this Window can be the focused Window
	* @see #isFocusableWindow
	* @see #setFocusableWindowState
	* @see #isShowing
	* @see Component#setFocusable
	* @since 1.4
	*/
	public boolean getFocusableWindowState() {
	return focusableWindowState;
	}

	/**
	* Sets whether this Window can become the focused Window if it meets
	* the other requirements outlined in {@code isFocusableWindow}. If
	* this Window's focusable Window state is set to {@code false}, then
	* {@code isFocusableWindow} will return {@code false}. If this
	* Window's focusable Window state is set to {@code true}, then
	* {@code isFocusableWindow} may return {@code true} or
	* {@code false} depending upon the other requirements which must be
	* met in order for a Window to be focusable.
	* <p>
	* Setting a Window's focusability state to {@code false} is the
	* standard mechanism for an application to identify to the AWT a Window
	* which will be used as a floating palette or toolbar, and thus should be
	* a non-focusable Window.
	*
	* Setting the focusability state on a visible {@code Window}
	* can have a delayed effect on some platforms the actual
	* change may happen only when the {@code Window} becomes
	* hidden and then visible again. To ensure consistent behavior
	* across platforms, set the {@code Window}'s focusable state
	* when the {@code Window} is invisible and then show it.
	*
	* @param focusableWindowState whether this Window can be the focused
	* Window
	* @see #isFocusableWindow
	* @see #getFocusableWindowState
	* @see #isShowing
	* @see Component#setFocusable
	* @since 1.4
	*/
	public void setFocusableWindowState(boolean focusableWindowState) {
	boolean oldFocusableWindowState;
	synchronized (this) {
	oldFocusableWindowState = this.focusableWindowState;
	this.focusableWindowState = focusableWindowState;
	}
	WindowPeer peer = (WindowPeer)this.peer;
	if (peer != null) {
	peer.updateFocusableWindowState();
	}
	firePropertyChange("focusableWindowState", oldFocusableWindowState,
	focusableWindowState);
	if (oldFocusableWindowState && !focusableWindowState && isFocused()) {
	for (Window owner = getOwner();
	owner != null;
	owner = owner.getOwner())
	{
	Component toFocus =
	KeyboardFocusManager.getMostRecentFocusOwner(owner);
	if (toFocus != null && toFocus.requestFocus(false, CausedFocusEvent.Cause.ACTIVATION)) {
	return;
	}
	}
	KeyboardFocusManager.getCurrentKeyboardFocusManager().
	clearGlobalFocusOwnerPriv();
	}
	}

	/**
	* Sets whether this window should receive focus on
	* subsequently being shown (with a call to {@link #setVisible setVisible(true)}),
	* or being moved to the front (with a call to {@link #toFront}).
	* <p>
	* Note that {@link #setVisible setVisible(true)} may be called indirectly
	* (e.g. when showing an owner of the window makes the window to be shown).
	* {@link #toFront} may also be called indirectly (e.g. when
	* {@link #setVisible setVisible(true)} is called on already visible window).
	* In all such cases this property takes effect as well.
	* <p>
	* The value of the property is not inherited by owned windows.
	*
	* @param autoRequestFocus whether this window should be focused on
	* subsequently being shown or being moved to the front
	* @see #isAutoRequestFocus
	* @see #isFocusableWindow
	* @see #setVisible
	* @see #toFront
	* @since 1.7
	*/
	public void setAutoRequestFocus(boolean autoRequestFocus) {
	this.autoRequestFocus = autoRequestFocus;
	}

	/**
	* Returns whether this window should receive focus on subsequently being shown
	* (with a call to {@link #setVisible setVisible(true)}), or being moved to the front
	* (with a call to {@link #toFront}).
	* <p>
	* By default, the window has {@code autoRequestFocus} value of {@code true}.
	*
	* @return {@code autoRequestFocus} value
	* @see #setAutoRequestFocus
	* @since 1.7
	*/
	public boolean isAutoRequestFocus() {
	return autoRequestFocus;
	}

	/**
	* Adds a PropertyChangeListener to the listener list. The listener is
	* registered for all bound properties of this class, including the
	* following:
	* <ul>
	* <li>this Window's font ("font")</li>
	* <li>this Window's background color ("background")</li>
	* <li>this Window's foreground color ("foreground")</li>
	* <li>this Window's focusability ("focusable")</li>
	* <li>this Window's focus traversal keys enabled state
	* ("focusTraversalKeysEnabled")</li>
	* <li>this Window's Set of FORWARD_TRAVERSAL_KEYS
	* ("forwardFocusTraversalKeys")</li>
	* <li>this Window's Set of BACKWARD_TRAVERSAL_KEYS
	* ("backwardFocusTraversalKeys")</li>
	* <li>this Window's Set of UP_CYCLE_TRAVERSAL_KEYS
	* ("upCycleFocusTraversalKeys")</li>
	* <li>this Window's Set of DOWN_CYCLE_TRAVERSAL_KEYS
	* ("downCycleFocusTraversalKeys")</li>
	* <li>this Window's focus traversal policy ("focusTraversalPolicy")
	* </li>
	* <li>this Window's focusable Window state ("focusableWindowState")
	* </li>
	* <li>this Window's always-on-top state("alwaysOnTop")</li>
	* </ul>
	* Note that if this Window is inheriting a bound property, then no
	* event will be fired in response to a change in the inherited property.
	* <p>
	* If listener is null, no exception is thrown and no action is performed.
	*
	* @param listener the PropertyChangeListener to be added
	*
	* @see Component#removePropertyChangeListener
	* @see #addPropertyChangeListener(java.lang.String,java.beans.PropertyChangeListener)
	*/
	public void addPropertyChangeListener(PropertyChangeListener listener) {
	super.addPropertyChangeListener(listener);
	}

	/**
	* Adds a PropertyChangeListener to the listener list for a specific
	* property. The specified property may be user-defined, or one of the
	* following:
	* <ul>
	* <li>this Window's font ("font")</li>
	* <li>this Window's background color ("background")</li>
	* <li>this Window's foreground color ("foreground")</li>
	* <li>this Window's focusability ("focusable")</li>
	* <li>this Window's focus traversal keys enabled state
	* ("focusTraversalKeysEnabled")</li>
	* <li>this Window's Set of FORWARD_TRAVERSAL_KEYS
	* ("forwardFocusTraversalKeys")</li>
	* <li>this Window's Set of BACKWARD_TRAVERSAL_KEYS
	* ("backwardFocusTraversalKeys")</li>
	* <li>this Window's Set of UP_CYCLE_TRAVERSAL_KEYS
	* ("upCycleFocusTraversalKeys")</li>
	* <li>this Window's Set of DOWN_CYCLE_TRAVERSAL_KEYS
	* ("downCycleFocusTraversalKeys")</li>
	* <li>this Window's focus traversal policy ("focusTraversalPolicy")
	* </li>
	* <li>this Window's focusable Window state ("focusableWindowState")
	* </li>
	* <li>this Window's always-on-top state("alwaysOnTop")</li>
	* </ul>
	* Note that if this Window is inheriting a bound property, then no
	* event will be fired in response to a change in the inherited property.
	* <p>
	* If listener is null, no exception is thrown and no action is performed.
	*
	* @param propertyName one of the property names listed above
	* @param listener the PropertyChangeListener to be added
	*
	* @see #addPropertyChangeListener(java.beans.PropertyChangeListener)
	* @see Component#removePropertyChangeListener
	*/
	public void addPropertyChangeListener(String propertyName,
	PropertyChangeListener listener) {
	super.addPropertyChangeListener(propertyName, listener);
	}

	/**
	* Indicates if this container is a validate root.
	* <p>
	* {@code Window} objects are the validate roots, and, therefore, they
	* override this method to return {@code true}.
	*
	* @return {@code true}
	* @since 1.7
	* @see java.awt.Container#isValidateRoot
	*/
	@Override
	public boolean isValidateRoot() {
	return true;
	}

	/**
	* Dispatches an event to this window or one of its sub components.
	* @param e the event
	*/
	void dispatchEventImpl(AWTEvent e) {
	if (e.getID() == ComponentEvent.COMPONENT_RESIZED) {
	invalidate();
	validate();
	}
	super.dispatchEventImpl(e);
	}

	/**
	* @deprecated As of JDK version 1.1
	* replaced by {@code dispatchEvent(AWTEvent)}.
	*/
	@Deprecated
	public boolean postEvent(Event e) {
	if (handleEvent(e)) {
	e.consume();
	return true;
	}
	return false;
	}

	/**
	* Checks if this Window is showing on screen.
	* @see Component#setVisible
	*/
	public boolean isShowing() {
	return visible;
	}

	boolean isDisposing() {
	return disposing;
	}

	/**
	* @deprecated As of J2SE 1.4, replaced by
	* {@link Component#applyComponentOrientation Component.applyComponentOrientation}.
	*/
	@Deprecated
	public void applyResourceBundle(ResourceBundle rb) {
	applyComponentOrientation(ComponentOrientation.getOrientation(rb));
	}

	/**
	* @deprecated As of J2SE 1.4, replaced by
	* {@link Component#applyComponentOrientation Component.applyComponentOrientation}.
	*/
	@Deprecated
	public void applyResourceBundle(String rbName) {
	applyResourceBundle(ResourceBundle.getBundle(rbName,
	Locale.getDefault(),
	ClassLoader.getSystemClassLoader()));
	}

	/*
	* Support for tracking all windows owned by this window
	*/
	void addOwnedWindow(WeakReference<Window> weakWindow) {
	if (weakWindow != null) {
	synchronized(ownedWindowList) {
	// this if statement should really be an assert, but we don't
	// have asserts...
	if (!ownedWindowList.contains(weakWindow)) {
	ownedWindowList.addElement(weakWindow);
	}
	}
	}
	}

	void removeOwnedWindow(WeakReference<Window> weakWindow) {
	if (weakWindow != null) {
	// synchronized block not required since removeElement is
	// already synchronized
	ownedWindowList.removeElement(weakWindow);
	}
	}

	void connectOwnedWindow(Window child) {
	child.parent = this;
	addOwnedWindow(child.weakThis);
	child.disposerRecord.updateOwner();
	}

	private void addToWindowList() {
	synchronized (Window.class) {
	@SuppressWarnings("unchecked")
	Vector<WeakReference<Window>> windowList = (Vector<WeakReference<Window>>)appContext.get(Window.class);
	if (windowList == null) {
	windowList = new Vector<WeakReference<Window>>();
	appContext.put(Window.class, windowList);
	}
	windowList.add(weakThis);
	}
	}

	private static void removeFromWindowList(AppContext context, WeakReference<Window> weakThis) {
	synchronized (Window.class) {
	@SuppressWarnings("unchecked")
	Vector<WeakReference<Window>> windowList = (Vector<WeakReference<Window>>)context.get(Window.class);
	if (windowList != null) {
	windowList.remove(weakThis);
	}
	}
	}

	private void removeFromWindowList() {
	removeFromWindowList(appContext, weakThis);
	}

	/**
	* Window type.
	*
	* Synchronization: ObjectLock
	*/
	private Type type = Type.NORMAL;

	/**
	* Sets the type of the window.
	*
	* This method can only be called while the window is not displayable.
	*
	* @throws IllegalComponentStateException if the window
	* is displayable.
	* @throws IllegalArgumentException if the type is {@code null}
	* @see Component#isDisplayable
	* @see #getType
	* @since 1.7
	*/
	public void setType(Type type) {
	if (type == null) {
	throw new IllegalArgumentException("type should not be null.");
	}
	synchronized (getTreeLock()) {
	if (isDisplayable()) {
	throw new IllegalComponentStateException(
	"The window is displayable.");
	}
	synchronized (getObjectLock()) {
	this.type = type;
	}
	}
	}

	/**
	* Returns the type of the window.
	*
	* @see #setType
	* @since 1.7
	*/
	public Type getType() {
	synchronized (getObjectLock()) {
	return type;
	}
	}

	/**
	* The window serialized data version.
	*
	* @serial
	*/
	private int windowSerializedDataVersion = 2;

	/**
	* Writes default serializable fields to stream. Writes
	* a list of serializable {@code WindowListener}s and
	* {@code WindowFocusListener}s as optional data.
	* Writes a list of child windows as optional data.
	* Writes a list of icon images as optional data
	*
	* @param s the {@code ObjectOutputStream} to write
	* @serialData {@code null} terminated sequence of
	* 0 or more pairs; the pair consists of a {@code String}
	* and {@code Object}; the {@code String}
	* indicates the type of object and is one of the following:
	* {@code windowListenerK} indicating a
	* {@code WindowListener} object;
	* {@code windowFocusWindowK} indicating a
	* {@code WindowFocusListener} object;
	* {@code ownedWindowK} indicating a child
	* {@code Window} object
	*
	* @see AWTEventMulticaster#save(java.io.ObjectOutputStream, java.lang.String, java.util.EventListener)
	* @see Component#windowListenerK
	* @see Component#windowFocusListenerK
	* @see Component#ownedWindowK
	* @see #readObject(ObjectInputStream)
	*/
	private void writeObject(ObjectOutputStream s) throws IOException {
	synchronized (this) {
	// Update old focusMgr fields so that our object stream can be read
	// by previous releases
	focusMgr = new FocusManager();
	focusMgr.focusRoot = this;
	focusMgr.focusOwner = getMostRecentFocusOwner();

	s.defaultWriteObject();

	// Clear fields so that we don't keep extra references around
	focusMgr = null;

	AWTEventMulticaster.save(s, windowListenerK, windowListener);
	AWTEventMulticaster.save(s, windowFocusListenerK, windowFocusListener);
	AWTEventMulticaster.save(s, windowStateListenerK, windowStateListener);
	}

	s.writeObject(null);

	synchronized (ownedWindowList) {
	for (int i = 0; i < ownedWindowList.size(); i++) {
	Window child = ownedWindowList.elementAt(i).get();
	if (child != null) {
	s.writeObject(ownedWindowK);
	s.writeObject(child);
	}
	}
	}
	s.writeObject(null);

	//write icon array
	if (icons != null) {
	for (Image i : icons) {
	if (i instanceof Serializable) {
	s.writeObject(i);
	}
	}
	}
	s.writeObject(null);
	}

	//
	// Part of deserialization procedure to be called before
	// user's code.
	//
	private void initDeserializedWindow() {
	setWarningString();
	inputContextLock = new Object();

	// Deserialized Windows are not yet visible.
	visible = false;

	weakThis = new WeakReference<>(this);

	anchor = new Object();
	disposerRecord = new WindowDisposerRecord(appContext, this);
	sun.java2d.Disposer.addRecord(anchor, disposerRecord);

	addToWindowList();
	initGC(null);
	ownedWindowList = new Vector<>();
	}

	private void deserializeResources(ObjectInputStream s)
	throws ClassNotFoundException, IOException, HeadlessException {

	if (windowSerializedDataVersion < 2) {
	// Translate old-style focus tracking to new model. For 1.4 and
	// later releases, we'll rely on the Window's initial focusable
	// Component.
	if (focusMgr != null) {
	if (focusMgr.focusOwner != null) {
	KeyboardFocusManager.
	setMostRecentFocusOwner(this, focusMgr.focusOwner);
	}
	}

	// This field is non-transient and relies on default serialization.
	// However, the default value is insufficient, so we need to set
	// it explicitly for object data streams prior to 1.4.
	focusableWindowState = true;


	}

	Object keyOrNull;
	while(null != (keyOrNull = s.readObject())) {
	String key = ((String)keyOrNull).intern();

	if (windowListenerK == key) {
	addWindowListener((WindowListener)(s.readObject()));
	} else if (windowFocusListenerK == key) {
	addWindowFocusListener((WindowFocusListener)(s.readObject()));
	} else if (windowStateListenerK == key) {
	addWindowStateListener((WindowStateListener)(s.readObject()));
	} else // skip value for unrecognized key
	s.readObject();
	}

	try {
	while (null != (keyOrNull = s.readObject())) {
	String key = ((String)keyOrNull).intern();

	if (ownedWindowK == key)
	connectOwnedWindow((Window) s.readObject());

	else // skip value for unrecognized key
	s.readObject();
	}

	//read icons
	Object obj = s.readObject(); //Throws OptionalDataException
	//for pre1.6 objects.
	icons = new ArrayList<Image>(); //Frame.readObject() assumes
	//pre1.6 version if icons is null.
	while (obj != null) {
	if (obj instanceof Image) {
	icons.add((Image)obj);
	}
	obj = s.readObject();
	}
	}
	catch (OptionalDataException e) {
	// 1.1 serialized form
	// ownedWindowList will be updated by Frame.readObject
	}

	}

	/**
	* Reads the {@code ObjectInputStream} and an optional
	* list of listeners to receive various events fired by
	* the component; also reads a list of
	* (possibly {@code null}) child windows.
	* Unrecognized keys or values will be ignored.
	*
	* @param s the {@code ObjectInputStream} to read
	* @exception HeadlessException if
	* {@code GraphicsEnvironment.isHeadless} returns
	* {@code true}
	* @see java.awt.GraphicsEnvironment#isHeadless
	* @see #writeObject
	*/
	private void readObject(ObjectInputStream s)
	throws ClassNotFoundException, IOException, HeadlessException
	{
	GraphicsEnvironment.checkHeadless();
	initDeserializedWindow();
	ObjectInputStream.GetField f = s.readFields();

	syncLWRequests = f.get("syncLWRequests", systemSyncLWRequests);
	state = f.get("state", 0);
	focusableWindowState = f.get("focusableWindowState", true);
	windowSerializedDataVersion = f.get("windowSerializedDataVersion", 1);
	locationByPlatform = f.get("locationByPlatform", locationByPlatformProp);
	// Note: 1.4 (or later) doesn't use focusMgr
	focusMgr = (FocusManager)f.get("focusMgr", null);
	Dialog.ModalExclusionType et = (Dialog.ModalExclusionType)
	f.get("modalExclusionType", Dialog.ModalExclusionType.NO_EXCLUDE);
	setModalExclusionType(et); // since 6.0
	boolean aot = f.get("alwaysOnTop", false);
	if(aot) {
	setAlwaysOnTop(aot); // since 1.5; subject to permission check
	}
	shape = (Shape)f.get("shape", null);
	opacity = (Float)f.get("opacity", 1.0f);

	this.securityWarningWidth = 0;
	this.securityWarningHeight = 0;
	this.securityWarningPointX = 2.0;
	this.securityWarningPointY = 0.0;
	this.securityWarningAlignmentX = RIGHT_ALIGNMENT;
	this.securityWarningAlignmentY = TOP_ALIGNMENT;

	deserializeResources(s);
	}

	/*
	* --- Accessibility Support ---
	*
	*/

	/**
	* Gets the AccessibleContext associated with this Window.
	* For windows, the AccessibleContext takes the form of an
	* AccessibleAWTWindow.
	* A new AccessibleAWTWindow instance is created if necessary.
	*
	* @return an AccessibleAWTWindow that serves as the
	* AccessibleContext of this Window
	* @since 1.3
	*/
	public AccessibleContext getAccessibleContext() {
	if (accessibleContext == null) {
	accessibleContext = new AccessibleAWTWindow();
	}
	return accessibleContext;
	}

	/**
	* This class implements accessibility support for the
	* {@code Window} class. It provides an implementation of the
	* Java Accessibility API appropriate to window user-interface elements.
	* @since 1.3
	*/
	protected class AccessibleAWTWindow extends AccessibleAWTContainer
	{
	/*
	* JDK 1.3 serialVersionUID
	*/
	private static final long serialVersionUID = 4215068635060671780L;

	/**
	* Get the role of this object.
	*
	* @return an instance of AccessibleRole describing the role of the
	* object
	* @see javax.accessibility.AccessibleRole
	*/
	public AccessibleRole getAccessibleRole() {
	return AccessibleRole.WINDOW;
	}

	/**
	* Get the state of this object.
	*
	* @return an instance of AccessibleStateSet containing the current
	* state set of the object
	* @see javax.accessibility.AccessibleState
	*/
	public AccessibleStateSet getAccessibleStateSet() {
	AccessibleStateSet states = super.getAccessibleStateSet();
	if (getFocusOwner() != null) {
	states.add(AccessibleState.ACTIVE);
	}
	return states;
	}

	} // inner class AccessibleAWTWindow

	@Override
	void setGraphicsConfiguration(GraphicsConfiguration gc) {
	if (gc == null) {
	gc = GraphicsEnvironment.
	getLocalGraphicsEnvironment().
	getDefaultScreenDevice().
	getDefaultConfiguration();
	}
	synchronized (getTreeLock()) {
	super.setGraphicsConfiguration(gc);
	if (log.isLoggable(PlatformLogger.Level.FINER)) {
	log.finer("+ Window.setGraphicsConfiguration(): new GC is \n+ " + getGraphicsConfiguration_NoClientCode() + "\n+ this is " + this);
	}
	}
	}

	/**
	* Sets the location of the window relative to the specified
	* component according to the following scenarios.
	* <p>
	* The target screen mentioned below is a screen to which
	* the window should be placed after the setLocationRelativeTo
	* method is called.
	* <ul>
	* <li>If the component is {@code null}, or the {@code
	* GraphicsConfiguration} associated with this component is
	* {@code null}, the window is placed in the center of the
	* screen. The center point can be obtained with the {@link
	* GraphicsEnvironment#getCenterPoint
	* GraphicsEnvironment.getCenterPoint} method.
	* <li>If the component is not {@code null}, but it is not
	* currently showing, the window is placed in the center of
	* the target screen defined by the {@code
	* GraphicsConfiguration} associated with this component.
	* <li>If the component is not {@code null} and is shown on
	* the screen, then the window is located in such a way that
	* the center of the window coincides with the center of the
	* component.
	* </ul>
	* <p>
	* If the screens configuration does not allow the window to
	* be moved from one screen to another, then the window is
	* only placed at the location determined according to the
	* above conditions and its {@code GraphicsConfiguration} is
	* not changed.
	* <p>
	* <b>Note</b>: If the lower edge of the window is out of the screen,
	* then the window is placed to the side of the {@code Component}
	* that is closest to the center of the screen. So if the
	* component is on the right part of the screen, the window
	* is placed to its left, and vice versa.
	* <p>
	* If after the window location has been calculated, the upper,
	* left, or right edge of the window is out of the screen,
	* then the window is located in such a way that the upper,
	* left, or right edge of the window coincides with the
	* corresponding edge of the screen. If both left and right
	* edges of the window are out of the screen, the window is
	* placed at the left side of the screen. The similar placement
	* will occur if both top and bottom edges are out of the screen.
	* In that case, the window is placed at the top side of the screen.
	* <p>
	* The method changes the geometry-related data. Therefore,
	* the native windowing system may ignore such requests, or it may modify
	* the requested data, so that the {@code Window} object is placed and sized
	* in a way that corresponds closely to the desktop settings.
	*
	* @param c the component in relation to which the window's location
	* is determined
	* @see java.awt.GraphicsEnvironment#getCenterPoint
	* @since 1.4
	*/
	public void setLocationRelativeTo(Component c) {
	// target location
	int dx = 0, dy = 0;
	// target GC
	GraphicsConfiguration gc = getGraphicsConfiguration_NoClientCode();
	Rectangle gcBounds = gc.getBounds();

	Dimension windowSize = getSize();

	// search a top-level of c
	Window componentWindow = SunToolkit.getContainingWindow(c);
	if ((c == null) \|\| (componentWindow == null)) {
	GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment();
	gc = ge.getDefaultScreenDevice().getDefaultConfiguration();
	gcBounds = gc.getBounds();
	Point centerPoint = ge.getCenterPoint();
	dx = centerPoint.x - windowSize.width / 2;
	dy = centerPoint.y - windowSize.height / 2;
	} else if (!c.isShowing()) {
	gc = componentWindow.getGraphicsConfiguration();
	gcBounds = gc.getBounds();
	dx = gcBounds.x + (gcBounds.width - windowSize.width) / 2;
	dy = gcBounds.y + (gcBounds.height - windowSize.height) / 2;
	} else {
	gc = componentWindow.getGraphicsConfiguration();
	gcBounds = gc.getBounds();
	Dimension compSize = c.getSize();
	Point compLocation = c.getLocationOnScreen();
	dx = compLocation.x + ((compSize.width - windowSize.width) / 2);
	dy = compLocation.y + ((compSize.height - windowSize.height) / 2);

	// Adjust for bottom edge being offscreen
	if (dy + windowSize.height > gcBounds.y + gcBounds.height) {
	dy = gcBounds.y + gcBounds.height - windowSize.height;
	if (compLocation.x - gcBounds.x + compSize.width / 2 < gcBounds.width / 2) {
	dx = compLocation.x + compSize.width;
	} else {
	dx = compLocation.x - windowSize.width;
	}
	}
	}

	// Avoid being placed off the edge of the screen:
	// bottom
	if (dy + windowSize.height > gcBounds.y + gcBounds.height) {
	dy = gcBounds.y + gcBounds.height - windowSize.height;
	}
	// top
	if (dy < gcBounds.y) {
	dy = gcBounds.y;
	}
	// right
	if (dx + windowSize.width > gcBounds.x + gcBounds.width) {
	dx = gcBounds.x + gcBounds.width - windowSize.width;
	}
	// left
	if (dx < gcBounds.x) {
	dx = gcBounds.x;
	}

	setLocation(dx, dy);
	}

	/**
	* Overridden from Component. Top-level Windows should not propagate a
	* MouseWheelEvent beyond themselves into their owning Windows.
	*/
	void deliverMouseWheelToAncestor(MouseWheelEvent e) {}

	/**
	* Overridden from Component. Top-level Windows don't dispatch to ancestors
	*/
	boolean dispatchMouseWheelToAncestor(MouseWheelEvent e) {return false;}

	/**
	* Creates a new strategy for multi-buffering on this component.
	* Multi-buffering is useful for rendering performance. This method
	* attempts to create the best strategy available with the number of
	* buffers supplied. It will always create a {@code BufferStrategy}
	* with that number of buffers.
	* A page-flipping strategy is attempted first, then a blitting strategy
	* using accelerated buffers. Finally, an unaccelerated blitting
	* strategy is used.
	* <p>
	* Each time this method is called,
	* the existing buffer strategy for this component is discarded.
	* @param numBuffers number of buffers to create
	* @exception IllegalArgumentException if numBuffers is less than 1.
	* @exception IllegalStateException if the component is not displayable
	* @see #isDisplayable
	* @see #getBufferStrategy
	* @since 1.4
	*/
	public void createBufferStrategy(int numBuffers) {
	super.createBufferStrategy(numBuffers);
	}

	/**
	* Creates a new strategy for multi-buffering on this component with the
	* required buffer capabilities. This is useful, for example, if only
	* accelerated memory or page flipping is desired (as specified by the
	* buffer capabilities).
	* <p>
	* Each time this method
	* is called, the existing buffer strategy for this component is discarded.
	* @param numBuffers number of buffers to create, including the front buffer
	* @param caps the required capabilities for creating the buffer strategy;
	* cannot be {@code null}
	* @exception AWTException if the capabilities supplied could not be
	* supported or met; this may happen, for example, if there is not enough
	* accelerated memory currently available, or if page flipping is specified
	* but not possible.
	* @exception IllegalArgumentException if numBuffers is less than 1, or if
	* caps is {@code null}
	* @see #getBufferStrategy
	* @since 1.4
	*/
	public void createBufferStrategy(int numBuffers,
	BufferCapabilities caps) throws AWTException {
	super.createBufferStrategy(numBuffers, caps);
	}

	/**
	* Returns the {@code BufferStrategy} used by this component. This
	* method will return null if a {@code BufferStrategy} has not yet
	* been created or has been disposed.
	*
	* @return the buffer strategy used by this component
	* @see #createBufferStrategy
	* @since 1.4
	*/
	public BufferStrategy getBufferStrategy() {
	return super.getBufferStrategy();
	}

	Component getTemporaryLostComponent() {
	return temporaryLostComponent;
	}
	Component setTemporaryLostComponent(Component component) {
	Component previousComp = temporaryLostComponent;
	// Check that "component" is an acceptable focus owner and don't store it otherwise
	// - or later we will have problems with opposite while handling WINDOW_GAINED_FOCUS
	if (component == null \|\| component.canBeFocusOwner()) {
	temporaryLostComponent = component;
	} else {
	temporaryLostComponent = null;
	}
	return previousComp;
	}

	/**
	* Checks whether this window can contain focus owner.
	* Verifies that it is focusable and as container it can container focus owner.
	* @since 1.5
	*/
	boolean canContainFocusOwner(Component focusOwnerCandidate) {
	return super.canContainFocusOwner(focusOwnerCandidate) && isFocusableWindow();
	}

	private volatile boolean locationByPlatform = locationByPlatformProp;


	/**
	* Sets whether this Window should appear at the default location for the
	* native windowing system or at the current location (returned by
	* {@code getLocation}) the next time the Window is made visible.
	* This behavior resembles a native window shown without programmatically
	* setting its location. Most windowing systems cascade windows if their
	* locations are not explicitly set. The actual location is determined once the
	* window is shown on the screen.
	* <p>
	* This behavior can also be enabled by setting the System Property
	* "java.awt.Window.locationByPlatform" to "true", though calls to this method
	* take precedence.
	* <p>
	* Calls to {@code setVisible}, {@code setLocation} and
	* {@code setBounds} after calling {@code setLocationByPlatform} clear
	* this property of the Window.
	* <p>
	* For example, after the following code is executed:
	* <pre>
	* setLocationByPlatform(true);
	* setVisible(true);
	* boolean flag = isLocationByPlatform();
	* </pre>
	* The window will be shown at platform's default location and
	* {@code flag} will be {@code false}.
	* <p>
	* In the following sample:
	* <pre>
	* setLocationByPlatform(true);
	* setLocation(10, 10);
	* boolean flag = isLocationByPlatform();
	* setVisible(true);
	* </pre>
	* The window will be shown at (10, 10) and {@code flag} will be
	* {@code false}.
	*
	* @param locationByPlatform {@code true} if this Window should appear
	* at the default location, {@code false} if at the current location
	* @throws IllegalComponentStateException if the window
	* is showing on screen and locationByPlatform is {@code true}.
	* @see #setLocation
	* @see #isShowing
	* @see #setVisible
	* @see #isLocationByPlatform
	* @see java.lang.System#getProperty(String)
	* @since 1.5
	*/
	public void setLocationByPlatform(boolean locationByPlatform) {
	synchronized (getTreeLock()) {
	if (locationByPlatform && isShowing()) {
	throw new IllegalComponentStateException("The window is showing on screen.");
	}
	this.locationByPlatform = locationByPlatform;
	}
	}

	/**
	* Returns {@code true} if this Window will appear at the default location
	* for the native windowing system the next time this Window is made visible.
	* This method always returns {@code false} if the Window is showing on the
	* screen.
	*
	* @return whether this Window will appear at the default location
	* @see #setLocationByPlatform
	* @see #isShowing
	* @since 1.5
	*/
	public boolean isLocationByPlatform() {
	return locationByPlatform;
	}

	/**
	* {@inheritDoc}
	* <p>
	* The {@code width} or {@code height} values
	* are automatically enlarged if either is less than
	* the minimum size as specified by previous call to
	* {@code setMinimumSize}.
	* <p>
	* The method changes the geometry-related data. Therefore,
	* the native windowing system may ignore such requests, or it may modify
	* the requested data, so that the {@code Window} object is placed and sized
	* in a way that corresponds closely to the desktop settings.
	*
	* @see #getBounds
	* @see #setLocation(int, int)
	* @see #setLocation(Point)
	* @see #setSize(int, int)
	* @see #setSize(Dimension)
	* @see #setMinimumSize
	* @see #setLocationByPlatform
	* @see #isLocationByPlatform
	* @since 1.6
	*/
	public void setBounds(int x, int y, int width, int height) {
	synchronized (getTreeLock()) {
	if (getBoundsOp() == ComponentPeer.SET_LOCATION \|\|
	getBoundsOp() == ComponentPeer.SET_BOUNDS)
	{
	locationByPlatform = false;
	}
	super.setBounds(x, y, width, height);
	}
	}

	/**
	* {@inheritDoc}
	* <p>
	* The {@code r.width} or {@code r.height} values
	* will be automatically enlarged if either is less than
	* the minimum size as specified by previous call to
	* {@code setMinimumSize}.
	* <p>
	* The method changes the geometry-related data. Therefore,
	* the native windowing system may ignore such requests, or it may modify
	* the requested data, so that the {@code Window} object is placed and sized
	* in a way that corresponds closely to the desktop settings.
	*
	* @see #getBounds
	* @see #setLocation(int, int)
	* @see #setLocation(Point)
	* @see #setSize(int, int)
	* @see #setSize(Dimension)
	* @see #setMinimumSize
	* @see #setLocationByPlatform
	* @see #isLocationByPlatform
	* @since 1.6
	*/
	public void setBounds(Rectangle r) {
	setBounds(r.x, r.y, r.width, r.height);
	}

	/**
	* Determines whether this component will be displayed on the screen.
	* @return {@code true} if the component and all of its ancestors
	* until a toplevel window are visible, {@code false} otherwise
	*/
	boolean isRecursivelyVisible() {
	// 5079694 fix: for a toplevel to be displayed, its parent doesn't have to be visible.
	// We're overriding isRecursivelyVisible to implement this policy.
	return visible;
	}


	// ****************** SHAPES & TRANSPARENCY CODE ******************

	/**
	* Returns the opacity of the window.
	*
	* @return the opacity of the window
	*
	* @see Window#setOpacity(float)
	* @see GraphicsDevice.WindowTranslucency
	*
	* @since 1.7
	*/
	public float getOpacity() {
	return opacity;
	}

	/**
	* Sets the opacity of the window.
	* <p>
	* The opacity value is in the range [0..1]. Note that setting the opacity
	* level of 0 may or may not disable the mouse event handling on this
	* window. This is a platform-dependent behavior.
	* <p>
	* The following conditions must be met in order to set the opacity value
	* less than {@code 1.0f}:
	* <ul>
	* <li>The {@link GraphicsDevice.WindowTranslucency#TRANSLUCENT TRANSLUCENT}
	* translucency must be supported by the underlying system
	* <li>The window must be undecorated (see {@link Frame#setUndecorated}
	* and {@link Dialog#setUndecorated})
	* <li>The window must not be in full-screen mode (see {@link
	* GraphicsDevice#setFullScreenWindow(Window)})
	* </ul>
	* <p>
	* If the requested opacity value is less than {@code 1.0f}, and any of the
	* above conditions are not met, the window opacity will not change,
	* and the {@code IllegalComponentStateException} will be thrown.
	* <p>
	* The translucency levels of individual pixels may also be effected by the
	* alpha component of their color (see {@link Window#setBackground(Color)}) and the
	* current shape of this window (see {@link #setShape(Shape)}).
	*
	* @param opacity the opacity level to set to the window
	*
	* @throws IllegalArgumentException if the opacity is out of the range
	* [0..1]
	* @throws IllegalComponentStateException if the window is decorated and
	* the opacity is less than {@code 1.0f}
	* @throws IllegalComponentStateException if the window is in full screen
	* mode, and the opacity is less than {@code 1.0f}
	* @throws UnsupportedOperationException if the {@code
	* GraphicsDevice.WindowTranslucency#TRANSLUCENT TRANSLUCENT}
	* translucency is not supported and the opacity is less than
	* {@code 1.0f}
	*
	* @see Window#getOpacity
	* @see Window#setBackground(Color)
	* @see Window#setShape(Shape)
	* @see Frame#isUndecorated
	* @see Dialog#isUndecorated
	* @see GraphicsDevice.WindowTranslucency
	* @see GraphicsDevice#isWindowTranslucencySupported(GraphicsDevice.WindowTranslucency)
	*
	* @since 1.7
	*/
	public void setOpacity(float opacity) {
	synchronized (getTreeLock()) {
	if (opacity < 0.0f \|\| opacity > 1.0f) {
	throw new IllegalArgumentException(
	"The value of opacity should be in the range [0.0f .. 1.0f].");
	}
	if (opacity < 1.0f) {
	GraphicsConfiguration gc = getGraphicsConfiguration();
	GraphicsDevice gd = gc.getDevice();
	if (gc.getDevice().getFullScreenWindow() == this) {
	throw new IllegalComponentStateException(
	"Setting opacity for full-screen window is not supported.");
	}
	if (!gd.isWindowTranslucencySupported(
	GraphicsDevice.WindowTranslucency.TRANSLUCENT))
	{
	throw new UnsupportedOperationException(
	"TRANSLUCENT translucency is not supported.");
	}
	}
	this.opacity = opacity;
	WindowPeer peer = (WindowPeer)getPeer();
	if (peer != null) {
	peer.setOpacity(opacity);
	}
	}
	}

	/**
	* Returns the shape of the window.
	*
	* The value returned by this method may not be the same as
	* previously set with {@code setShape(shape)}, but it is guaranteed
	* to represent the same shape.
	*
	* @return the shape of the window or {@code null} if no
	* shape is specified for the window
	*
	* @see Window#setShape(Shape)
	* @see GraphicsDevice.WindowTranslucency
	*
	* @since 1.7
	*/
	public Shape getShape() {
	synchronized (getTreeLock()) {
	return shape == null ? null : new Path2D.Float(shape);
	}
	}

	/**
	* Sets the shape of the window.
	* <p>
	* Setting a shape cuts off some parts of the window. Only the parts that
	* belong to the given {@link Shape} remain visible and clickable. If
	* the shape argument is {@code null}, this method restores the default
	* shape, making the window rectangular on most platforms.
	* <p>
	* The following conditions must be met to set a non-null shape:
	* <ul>
	* <li>The {@link GraphicsDevice.WindowTranslucency#PERPIXEL_TRANSPARENT
	* PERPIXEL_TRANSPARENT} translucency must be supported by the
	* underlying system
	* <li>The window must be undecorated (see {@link Frame#setUndecorated}
	* and {@link Dialog#setUndecorated})
	* <li>The window must not be in full-screen mode (see {@link
	* GraphicsDevice#setFullScreenWindow(Window)})
	* </ul>
	* <p>
	* If the requested shape is not {@code null}, and any of the above
	* conditions are not met, the shape of this window will not change,
	* and either the {@code UnsupportedOperationException} or {@code
	* IllegalComponentStateException} will be thrown.
	* <p>
	* The translucency levels of individual pixels may also be effected by the
	* alpha component of their color (see {@link Window#setBackground(Color)}) and the
	* opacity value (see {@link #setOpacity(float)}). See {@link
	* GraphicsDevice.WindowTranslucency} for more details.
	*
	* @param shape the shape to set to the window
	*
	* @throws IllegalComponentStateException if the shape is not {@code
	* null} and the window is decorated
	* @throws IllegalComponentStateException if the shape is not {@code
	* null} and the window is in full-screen mode
	* @throws UnsupportedOperationException if the shape is not {@code
	* null} and {@link GraphicsDevice.WindowTranslucency#PERPIXEL_TRANSPARENT
	* PERPIXEL_TRANSPARENT} translucency is not supported
	*
	* @see Window#getShape()
	* @see Window#setBackground(Color)
	* @see Window#setOpacity(float)
	* @see Frame#isUndecorated
	* @see Dialog#isUndecorated
	* @see GraphicsDevice.WindowTranslucency
	* @see GraphicsDevice#isWindowTranslucencySupported(GraphicsDevice.WindowTranslucency)
	*
	* @since 1.7
	*/
	public void setShape(Shape shape) {
	synchronized (getTreeLock()) {
	if (shape != null) {
	GraphicsConfiguration gc = getGraphicsConfiguration();
	GraphicsDevice gd = gc.getDevice();
	if (gc.getDevice().getFullScreenWindow() == this) {
	throw new IllegalComponentStateException(
	"Setting shape for full-screen window is not supported.");
	}
	if (!gd.isWindowTranslucencySupported(
	GraphicsDevice.WindowTranslucency.PERPIXEL_TRANSPARENT))
	{
	throw new UnsupportedOperationException(
	"PERPIXEL_TRANSPARENT translucency is not supported.");
	}
	}
	this.shape = (shape == null) ? null : new Path2D.Float(shape);
	WindowPeer peer = (WindowPeer)getPeer();
	if (peer != null) {
	peer.applyShape(shape == null ? null : Region.getInstance(shape, null));
	}
	}
	}

	/**
	* Gets the background color of this window.
	* <p>
	* Note that the alpha component of the returned color indicates whether
	* the window is in the non-opaque (per-pixel translucent) mode.
	*
	* @return this component's background color
	*
	* @see Window#setBackground(Color)
	* @see Window#isOpaque
	* @see GraphicsDevice.WindowTranslucency
	*/
	@Override
	public Color getBackground() {
	return super.getBackground();
	}

	/**
	* Sets the background color of this window.
	* <p>
	* If the windowing system supports the {@link
	* GraphicsDevice.WindowTranslucency#PERPIXEL_TRANSLUCENT PERPIXEL_TRANSLUCENT}
	* translucency, the alpha component of the given background color
	* may effect the mode of operation for this window: it indicates whether
	* this window must be opaque (alpha equals {@code 1.0f}) or per-pixel translucent
	* (alpha is less than {@code 1.0f}). If the given background color is
	* {@code null}, the window is considered completely opaque.
	* <p>
	* All the following conditions must be met to enable the per-pixel
	* transparency mode for this window:
	* <ul>
	* <li>The {@link GraphicsDevice.WindowTranslucency#PERPIXEL_TRANSLUCENT
	* PERPIXEL_TRANSLUCENT} translucency must be supported by the graphics
	* device where this window is located
	* <li>The window must be undecorated (see {@link Frame#setUndecorated}
	* and {@link Dialog#setUndecorated})
	* <li>The window must not be in full-screen mode (see {@link
	* GraphicsDevice#setFullScreenWindow(Window)})
	* </ul>
	* <p>
	* If the alpha component of the requested background color is less than
	* {@code 1.0f}, and any of the above conditions are not met, the background
	* color of this window will not change, the alpha component of the given
	* background color will not affect the mode of operation for this window,
	* and either the {@code UnsupportedOperationException} or {@code
	* IllegalComponentStateException} will be thrown.
	* <p>
	* When the window is per-pixel translucent, the drawing sub-system
	* respects the alpha value of each individual pixel. If a pixel gets
	* painted with the alpha color component equal to zero, it becomes
	* visually transparent. If the alpha of the pixel is equal to 1.0f, the
	* pixel is fully opaque. Interim values of the alpha color component make
	* the pixel semi-transparent. In this mode, the background of the window
	* gets painted with the alpha value of the given background color. If the
	* alpha value of the argument of this method is equal to {@code 0}, the
	* background is not painted at all.
	* <p>
	* The actual level of translucency of a given pixel also depends on window
	* opacity (see {@link #setOpacity(float)}), as well as the current shape of
	* this window (see {@link #setShape(Shape)}).
	* <p>
	* Note that painting a pixel with the alpha value of {@code 0} may or may
	* not disable the mouse event handling on this pixel. This is a
	* platform-dependent behavior. To make sure the mouse events do not get
	* dispatched to a particular pixel, the pixel must be excluded from the
	* shape of the window.
	* <p>
	* Enabling the per-pixel translucency mode may change the graphics
	* configuration of this window due to the native platform requirements.
	*
	* @param bgColor the color to become this window's background color.
	*
	* @throws IllegalComponentStateException if the alpha value of the given
	* background color is less than {@code 1.0f} and the window is decorated
	* @throws IllegalComponentStateException if the alpha value of the given
	* background color is less than {@code 1.0f} and the window is in
	* full-screen mode
	* @throws UnsupportedOperationException if the alpha value of the given
	* background color is less than {@code 1.0f} and {@link
	* GraphicsDevice.WindowTranslucency#PERPIXEL_TRANSLUCENT
	* PERPIXEL_TRANSLUCENT} translucency is not supported
	*
	* @see Window#getBackground
	* @see Window#isOpaque
	* @see Window#setOpacity(float)
	* @see Window#setShape(Shape)
	* @see Frame#isUndecorated
	* @see Dialog#isUndecorated
	* @see GraphicsDevice.WindowTranslucency
	* @see GraphicsDevice#isWindowTranslucencySupported(GraphicsDevice.WindowTranslucency)
	* @see GraphicsConfiguration#isTranslucencyCapable()
	*/
	@Override
	public void setBackground(Color bgColor) {
	Color oldBg = getBackground();
	super.setBackground(bgColor);
	if (oldBg != null && oldBg.equals(bgColor)) {
	return;
	}
	int oldAlpha = oldBg != null ? oldBg.getAlpha() : 255;
	int alpha = bgColor != null ? bgColor.getAlpha() : 255;
	if ((oldAlpha == 255) && (alpha < 255)) { // non-opaque window
	GraphicsConfiguration gc = getGraphicsConfiguration();
	GraphicsDevice gd = gc.getDevice();
	if (gc.getDevice().getFullScreenWindow() == this) {
	throw new IllegalComponentStateException(
	"Making full-screen window non opaque is not supported.");
	}
	if (!gc.isTranslucencyCapable()) {
	GraphicsConfiguration capableGC = gd.getTranslucencyCapableGC();
	if (capableGC == null) {
	throw new UnsupportedOperationException(
	"PERPIXEL_TRANSLUCENT translucency is not supported");
	}
	setGraphicsConfiguration(capableGC);
	}
	setLayersOpaque(this, false);
	} else if ((oldAlpha < 255) && (alpha == 255)) {
	setLayersOpaque(this, true);
	}
	WindowPeer peer = (WindowPeer)getPeer();
	if (peer != null) {
	peer.setOpaque(alpha == 255);
	}
	}

	/**
	* Indicates if the window is currently opaque.
	* <p>
	* The method returns {@code false} if the background color of the window
	* is not {@code null} and the alpha component of the color is less than
	* {@code 1.0f}. The method returns {@code true} otherwise.
	*
	* @return {@code true} if the window is opaque, {@code false} otherwise
	*
	* @see Window#getBackground
	* @see Window#setBackground(Color)
	* @since 1.7
	*/
	@Override
	public boolean isOpaque() {
	Color bg = getBackground();
	return bg != null ? bg.getAlpha() == 255 : true;
	}

	private void updateWindow() {
	synchronized (getTreeLock()) {
	WindowPeer peer = (WindowPeer)getPeer();
	if (peer != null) {
	peer.updateWindow();
	}
	}
	}

	/**
	* {@inheritDoc}
	*
	* @since 1.7
	*/
	@Override
	public void paint(Graphics g) {
	if (!isOpaque()) {
	Graphics gg = g.create();
	try {
	if (gg instanceof Graphics2D) {
	gg.setColor(getBackground());
	((Graphics2D)gg).setComposite(AlphaComposite.getInstance(AlphaComposite.SRC));
	gg.fillRect(0, 0, getWidth(), getHeight());
	}
	} finally {
	gg.dispose();
	}
	}
	super.paint(g);
	}

	private static void setLayersOpaque(Component component, boolean isOpaque) {
	// Shouldn't use instanceof to avoid loading Swing classes
	// if it's a pure AWT application.
	if (SunToolkit.isInstanceOf(component, "javax.swing.RootPaneContainer")) {
	javax.swing.RootPaneContainer rpc = (javax.swing.RootPaneContainer)component;
	javax.swing.JRootPane root = rpc.getRootPane();
	javax.swing.JLayeredPane lp = root.getLayeredPane();
	Container c = root.getContentPane();
	javax.swing.JComponent content =
	(c instanceof javax.swing.JComponent) ? (javax.swing.JComponent)c : null;
	lp.setOpaque(isOpaque);
	root.setOpaque(isOpaque);
	if (content != null) {
	content.setOpaque(isOpaque);

	// Iterate down one level to see whether we have a JApplet
	// (which is also a RootPaneContainer) which requires processing
	int numChildren = content.getComponentCount();
	if (numChildren > 0) {
	Component child = content.getComponent(0);
	// It's OK to use instanceof here because we've
	// already loaded the RootPaneContainer class by now
	if (child instanceof javax.swing.RootPaneContainer) {
	setLayersOpaque(child, isOpaque);
	}
	}
	}
	}
	}


	// ************************ MIXING CODE *****************************

	// A window has an owner, but it does NOT have a container
	@Override
	final Container getContainer() {
	return null;
	}

	/**
	* Applies the shape to the component
	* @param shape Shape to be applied to the component
	*/
	@Override
	final void applyCompoundShape(Region shape) {
	// The shape calculated by mixing code is not intended to be applied
	// to windows or frames
	}

	@Override
	final void applyCurrentShape() {
	// The shape calculated by mixing code is not intended to be applied
	// to windows or frames
	}

	@Override
	final void mixOnReshaping() {
	// The shape calculated by mixing code is not intended to be applied
	// to windows or frames
	}

	@Override
	final Point getLocationOnWindow() {
	return new Point(0, 0);
	}

	// **************** END OF MIXING CODE ******************************

	/**
	* Limit the given double value with the given range.
	*/
	private static double limit(double value, double min, double max) {
	value = Math.max(value, min);
	value = Math.min(value, max);
	return value;
	}

	/**
	* Calculate the position of the security warning.
	*
	* This method gets the window location/size as reported by the native
	* system since the locally cached values may represent outdated data.
	*
	* The method is used from the native code, or via AWTAccessor.
	*
	* NOTE: this method is invoked on the toolkit thread, and therefore is not
	* supposed to become public/user-overridable.
	*/
	private Point2D calculateSecurityWarningPosition(double x, double y,
	double w, double h)
	{
	// The position according to the spec of SecurityWarning.setPosition()
	double wx = x + w * securityWarningAlignmentX + securityWarningPointX;
	double wy = y + h * securityWarningAlignmentY + securityWarningPointY;

	// First, make sure the warning is not too far from the window bounds
	wx = Window.limit(wx,
	x - securityWarningWidth - 2,
	x + w + 2);
	wy = Window.limit(wy,
	y - securityWarningHeight - 2,
	y + h + 2);

	// Now make sure the warning window is visible on the screen
	GraphicsConfiguration graphicsConfig =
	getGraphicsConfiguration_NoClientCode();
	Rectangle screenBounds = graphicsConfig.getBounds();
	Insets screenInsets =
	Toolkit.getDefaultToolkit().getScreenInsets(graphicsConfig);

	wx = Window.limit(wx,
	screenBounds.x + screenInsets.left,
	screenBounds.x + screenBounds.width - screenInsets.right
	- securityWarningWidth);
	wy = Window.limit(wy,
	screenBounds.y + screenInsets.top,
	screenBounds.y + screenBounds.height - screenInsets.bottom
	- securityWarningHeight);

	return new Point2D.Double(wx, wy);
	}

	static {
	AWTAccessor.setWindowAccessor(new AWTAccessor.WindowAccessor() {
	public float getOpacity(Window window) {
	return window.opacity;
	}
	public void setOpacity(Window window, float opacity) {
	window.setOpacity(opacity);
	}
	public Shape getShape(Window window) {
	return window.getShape();
	}
	public void setShape(Window window, Shape shape) {
	window.setShape(shape);
	}
	public void setOpaque(Window window, boolean opaque) {
	Color bg = window.getBackground();
	if (bg == null) {
	bg = new Color(0, 0, 0, 0);
	}
	window.setBackground(new Color(bg.getRed(), bg.getGreen(), bg.getBlue(),
	opaque ? 255 : 0));
	}
	public void updateWindow(Window window) {
	window.updateWindow();
	}

	public Dimension getSecurityWarningSize(Window window) {
	return new Dimension(window.securityWarningWidth,
	window.securityWarningHeight);
	}

	public void setSecurityWarningSize(Window window, int width, int height)
	{
	window.securityWarningWidth = width;
	window.securityWarningHeight = height;
	}

	public void setSecurityWarningPosition(Window window,
	Point2D point, float alignmentX, float alignmentY)
	{
	window.securityWarningPointX = point.getX();
	window.securityWarningPointY = point.getY();
	window.securityWarningAlignmentX = alignmentX;
	window.securityWarningAlignmentY = alignmentY;

	synchronized (window.getTreeLock()) {
	WindowPeer peer = (WindowPeer)window.getPeer();
	if (peer != null) {
	peer.repositionSecurityWarning();
	}
	}
	}

	public Point2D calculateSecurityWarningPosition(Window window,
	double x, double y, double w, double h)
	{
	return window.calculateSecurityWarningPosition(x, y, w, h);
	}

	public void setLWRequestStatus(Window changed, boolean status) {
	changed.syncLWRequests = status;
	}

	public boolean isAutoRequestFocus(Window w) {
	return w.autoRequestFocus;
	}

	public boolean isTrayIconWindow(Window w) {
	return w.isTrayIconWindow;
	}

	public void setTrayIconWindow(Window w, boolean isTrayIconWindow) {
	w.isTrayIconWindow = isTrayIconWindow;
	}

	public Window[] getOwnedWindows(Window w) {
	return w.getOwnedWindows_NoClientCode();
	}
	}); // WindowAccessor
	} // static

	// a window doesn't need to be updated in the Z-order.
	@Override
	void updateZOrder() {}

	} // class Window


	/**
	* This class is no longer used, but is maintained for Serialization
	* backward-compatibility.
	*/
	class FocusManager implements java.io.Serializable {
	Container focusRoot;
	Component focusOwner;

	/*
	* JDK 1.1 serialVersionUID
	*/
	static final long serialVersionUID = 2491878825643557906L;
	}

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