https://openjdk.java.net/ 
/*
 * 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 Window object is a top-level window with no borders and no menubar. The default layout for a window is BorderLayout. 

A window must have either a frame, dialog, or another window defined as its
owner when it's constructed.

 In a multi-screen environment, you can create a Window on a different screen device by constructing the Window with Window(Window, GraphicsConfiguration). The GraphicsConfiguration object is one of the GraphicsConfiguration objects of the target screen device. 

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.




 In such an environment, when calling setLocation, you must pass a virtual coordinate to this method. Similarly, calling getLocationOnScreen on a Window returns virtual device coordinates. Call the getBounds method of a GraphicsConfiguration to find its origin in the virtual coordinate system. 
 The following code sets the location of a Window at (10, 10) relative to the origin of the physical screen of the corresponding GraphicsConfiguration. If the bounds of the GraphicsConfiguration is not taken into account, the 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 GraphicsConfiguration. 
     Window w = new Window(Window owner, GraphicsConfiguration gc);
     Rectangle bounds = gc.getBounds();
     w.setLocation(10 + bounds.x, 10 + bounds.y);



 Note: the location and size of top-level windows (including Windows, Frames, and Dialogs) are under the control of the desktop's window management system. Calls to setLocation, setSize, and 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 Window in a way that more closely matches the desktop settings. 
 Due to the asynchronous nature of native event handling, the results returned by getBounds, getLocation, getLocationOnScreen, and 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. 
 An application may set the size and location of an invisible Window arbitrarily, but the window management system may subsequently change its size and/or location when the Window is made visible. One or more ComponentEvents will be generated to indicate the new geometry. 

Windows are capable of generating the following WindowEvents:
WindowOpened, WindowClosed, WindowGainedFocus, WindowLostFocus.

Author:     Sami Shaio,      Arthur van Hoff
See Also:
Since:      JDK1.0
/**
 * 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 window types. 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 Frame or Dialog instance. 

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 Also:
  • getType
  • setType
Since:1.7
/**
     * 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 normal window. This is the default type for objects of the Window class or its descendants. Use this type for regular top-level windows. 
/**
         * 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 utility 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 Frame or a 
Dialog object, and if it has its decorations enabled. 
/**
         * 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 popup 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 Frame or Dialog class, and have decorations enabled. 
/**
         * 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 AWTPermission("showWindowWithoutWarningBanner"). This message can be displayed anywhere in the window. 
See Also:
@serial
/**
     * 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;

    
icons is the graphical way we can represent the frames and dialogs. Window can't display icon but it's being inherited by owned Dialogs. 
See Also:
@serial
/**
     * {@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.

/**
     * 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.

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

    
A boolean value representing Window always-on-top state

See Also:
Since:1.5
@serial
/**
     * 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
/**
     * 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.

See Also:
Since:1.2
/**
     * 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
/**
     * Contains the modal dialog that blocks this window, or null
     * if the window is unblocked.
     *
     * @since 1.6
     */
    transient Dialog modalBlocker;

    
See Also:
@serial
Since:1.6
/**
     * @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
/**
     * Unused. Maintained for serialization backward-compatibility.
     *
     * @serial
     * @since 1.2
     */
    private FocusManager focusMgr;

    
Indicates whether this Window can become the focused Window.

See Also:
@serial
Since:1.4
/**
     * 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 setVisible(true)), or being moved to the front (with a call to toFront()). 
See Also:
@serial
Since:1.7
/**
     * 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

See Also:
@serial
Since:1.7
/**
     * 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 null if no shape is set (rectangular window). 
See Also:
@serial
Since:1.7
/**
     * 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.

/**
     * 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.

/**
     * 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.

/**
     * 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 GraphicsConfiguration. 
 If there is a security manager, then it is invoked to check AWTPermission("showWindowWithoutWarningBanner") to determine whether or not the window must be displayed with a warning banner. 
Params:
  • gc – the GraphicsConfiguration of the target screen device. If gc is null, the system default GraphicsConfiguration is assumed
Throws:
See Also:
/**
     * 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.

 If there is a security manager set, it is invoked to check AWTPermission("showWindowWithoutWarningBanner"). If that check fails with a SecurityException then a warning banner is created. 
Throws:
See Also:
/**
     * 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 Frame as its owner. The window will not be focusable unless its owner is showing on the screen. 
 If there is a security manager set, it is invoked to check AWTPermission("showWindowWithoutWarningBanner"). If that check fails with a SecurityException then a warning banner is created. 
Params:
  • owner – the Frame to act as owner or null if this window has no owner
Throws:
See Also:
/**
     * 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 Window as its owner. This window will not be focusable unless its nearest owning Frame or Dialog is showing on the screen. 
 If there is a security manager set, it is invoked to check AWTPermission("showWindowWithoutWarningBanner"). If that check fails with a SecurityException then a warning banner is created. 
Params:
  • owner – the Window to act as owner or null if this window has no owner
Throws:
See Also:
Since:    1.2
/**
     * 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 Window and a GraphicsConfiguration of a screen device. The Window will not be focusable unless its nearest owning Frame or Dialog is showing on the screen. 
 If there is a security manager set, it is invoked to check AWTPermission("showWindowWithoutWarningBanner"). If that check fails with a SecurityException then a warning banner is created. 
Params:
  • owner – the window to act as owner or null if this window has no owner
  • gc – the GraphicsConfiguration of the target screen device; if gc is null, the system default GraphicsConfiguration is assumed
Throws:
See Also:
Since:    1.3
/**
     * 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.

/**
     * 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.


This method returns a copy of the internally stored list, so all operations
on the returned object will not affect the window's behavior.

See Also:
Returns:   the copy of icon images' list for this window, or
           empty list if this window doesn't have icon images.
Since:    1.6
/**
     * 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 getIconImages will always return a copy of the icons list. 

Depending on the platform capabilities one or several images
of different dimensions will be used as the window's icon.

 The 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. 
 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 null or empty list restores the default behavior. 

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.

Params:
  • icons – the list of icon images to be displayed.
See Also:
Since:    1.6
/**
     * 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.

 This method can be used instead of setIconImages() to specify a single image as a window's icon. 

The following statement:

    setIconImage(image);


is equivalent to:

    ArrayList<Image> imageList = new ArrayList<Image>();
    imageList.add(image);
    setIconImages(imageList);




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.

Params:
  • image – the icon image to be displayed.
See Also:
Since:    1.6
/**
     * 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&lt;Image&gt; imageList = new ArrayList&lt;Image&gt;();
     *     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 Also:
Since:JDK1.0
/**
     * 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}

/**
     * {@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 setMinimumSize method. 

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 Also:
/**
     * 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 getMinimumSize will always return this value. If current window's size is less than minimumSize the size of the window is automatically enlarged to honor the minimum size. 
 If the setSize or setBounds methods are called afterwards with a width or height less than that was specified by the setMinimumSize method the window is automatically enlarged to meet the minimumSize value. The minimumSize value also affects the behaviour of the pack method. 
 The default behavior is restored by setting the minimum size parameter to the null value. 
 Resizing operation may be restricted if the user tries to resize window below the minimumSize value. This behaviour is platform-dependent. 
Params:
  • minimumSize – the new minimum size of this window
See Also:
Since:1.6
/**
     * 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}

 The d.width and d.height values are automatically enlarged if either is less than the minimum size as specified by previous call to setMinimumSize. 
 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 Window object is placed and sized in a way that corresponds closely to the desktop settings. 
See Also:
Since:1.6
/**
     * {@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}

 The width and height values are automatically enlarged if either is less than the minimum size as specified by previous call to setMinimumSize. 
 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 Window object is placed and sized in a way that corresponds closely to the desktop settings. 
See Also:
Since:1.6
/**
     * {@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}

 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 Window object is placed and sized in a way that corresponds closely to the desktop settings. 
/**
     * {@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}

 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 Window object is placed and sized in a way that corresponds closely to the desktop settings. 
/**
     * {@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 setBounds(int, int, int, int).
/**
     * @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 Window depending on the value of parameter b. 

If the method shows the window then the window is also made
focused under the following conditions:

    

  •  The Window meets the requirements outlined in the isFocusableWindow method. 
  •  The Window's autoRequestFocus property is of the true value. 
  •  Native windowing system allows the Window to get focused. 
 There is an exception for the second condition (the value of the autoRequestFocus property). The property is not taken into account if the window is a modal dialog, which blocks the currently focused window. 

Developers must never assume that the window is the focused or active window
until it receives a WINDOW_GAINED_FOCUS or WINDOW_ACTIVATED event.

Params:
  • b –  if true, makes the Window visible, otherwise hides the Window. 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.
     If false, hides this Window, its subcomponents, and all of its owned children. The Window and its subcomponents can be made visible again with a call to #setVisible(true).
See Also:
/**
     * 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 Also:
Deprecated:As of JDK version 1.5, replaced by setVisible(boolean).
/**
     * 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 show. 
See Also:
Deprecated:As of JDK version 1.5, replaced by setVisible(boolean).
/**
     * 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 Window, its subcomponents, and all of its owned children. That is, the resources for these Components will be destroyed, any memory they consume will be returned to the OS, and they will be marked as undisplayable. 
 The Window and its subcomponents can be made displayable again by rebuilding the native resources with a subsequent call to pack or show. The states of the recreated Window and its subcomponents will be identical to the states of these objects at the point where the Window was disposed (not accounting for additional modifications between those actions). 

Note: When the last displayable window
within the Java virtual machine (VM) is disposed of, the VM may
terminate.  See 
AWT Threading Issues for more information.

See Also:
/**
     * 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.


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.


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 probably focus this Window (if it is not already focused)
under the following conditions:

    

  •  The window meets the requirements outlined in the isFocusableWindow method. 
  •  The window's property autoRequestFocus is of the true value. 
  •  Native windowing system allows the window to get focused.


On platforms where the stacking order does not typically affect the focused
window, this method will probably leave the focused and active
Windows unchanged.


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.


If this window is blocked by modal dialog, then the blocking dialog
is brought to the front and remains above the blocked window.

See Also:
/**
     * 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.


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.


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 probably 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 probably leave the focused
and active Windows unchanged.

See Also:
  • toFront
/**
     * 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.

See Also:
Returns:   the toolkit of this window.
/**
     * 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 AWTPermission("showWindowWithoutWarningBanner"). 
 If the window is secure, then getWarningString returns null. If the window is insecure, this method checks for the system property awt.appletWarning and returns the string value of that property. 
Returns:   the warning string for this window.
/**
     * 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 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. 
See Also:
Returns:   the locale that is set for this window.
Since:    JDK1.1
/**
     * 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 Also:
  • getInputContext.getInputContext
Since:1.2
/**
     * 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.


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.

Params:
  • cursor – One of the constants defined by the Cursor class. If this parameter is null then the cursor for this window will be set to the type Cursor.DEFAULT_CURSOR.
See Also:
Since:    JDK1.1
/**
     * 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
/**
     * 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
/**
     * 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 Windows, both owned and ownerless, created by this application. If called from an applet, the array includes only the Windows accessible by that applet. 

Warning: 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, LayoutManagers or serialization. 
See Also:
Since:1.6
/**
     * 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 Windows created by this application that have no owner. They include Frames and ownerless Dialogs and Windows. If called from an applet, the array includes only the Windows accessible by that applet. 

Warning: 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, LayoutManagers or serialization. 
See Also:
Since:1.6
/**
     * 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 Dialog.ModalExclusionType for possible modal exclusion types. 
 If the given type is not supported, NO_EXCLUDE is used. 

Note: changing the modal exclusion type for a visible window may have no
effect until it is hidden and then shown again.

Params:
  • exclusionType – the modal exclusion type for this window; a null value is equivalent to 
    NO_EXCLUDE
Throws:
  • SecurityException – if the calling thread does not have permission to set the modal exclusion property to the window with the given exclusionType
See Also:
Since:1.6
/**
     * 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.

See Also:
Returns:the modal exclusion type of this window
Since:1.6
/**
     * 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.

Refer to AWT Threading Issues for details on AWT's threading model.

Params:
  • l – the window listener
See Also:
/**
     * 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 l is null, no exception is thrown and no action is performed. 
Refer to AWT Threading Issues for details on AWT's threading model.

Params:
  • l – the window state listener
See Also:
Since:1.4
/**
     * 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.

Refer to AWT Threading Issues for details on AWT's threading model.

Params:
  • l – the window focus listener
See Also:
Since:1.4
/**
     * 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.

Refer to AWT Threading Issues for details on AWT's threading model.

Params:
  • l – the window listener
See Also:
/**
     * 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 l is null, no exception is thrown and no action is performed. 
Refer to AWT Threading Issues for details on AWT's threading model.

Params:
  • l – the window state listener
See Also:
Since:1.4
/**
     * 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.

Refer to AWT Threading Issues for details on AWT's threading model.

Params:
  • l – the window focus listener
See Also:
Since:1.4
/**
     * 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.

See Also:
Returns:all of this window's WindowListeners or an empty array if no window listeners are currently registered
Since:1.4
/**
     * 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.

See Also:
Returns:all of this window's WindowFocusListeners or an empty array if no window focus listeners are currently registered
Since:1.4
/**
     * 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.

See Also:
Returns:all of this window's WindowStateListeners or an empty array if no window state listeners are currently registered
Since:1.4
/**
     * 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 FooListeners upon this Window. FooListeners are registered using the
addFooListener method.

 You can specify the listenerType argument with a class literal, such as FooListener.class. For example, you can query a Window w for its window listeners with the following code: 
WindowListener[] wls = (WindowListener[])(w.getListeners(WindowListener.class));

If no such listeners exist, this method returns an empty array.

Params:
  • listenerType – the type of listeners requested; this parameter should specify an interface that descends from java.util.EventListener
Throws:
See Also:
Returns:an array of all objects registered as
         FooListeners on this window,
         or an empty array if no such
         listeners have been added
Since:1.3
/**
     * 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 WindowEvent, it invokes the processWindowEvent method, else it invokes its superclass's processEvent. 
Note that if the event parameter is null the behavior is unspecified and may result in an exception. 
Params:
  • e – the event
/**
     * 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:

    

  • A WindowListener object is registered via addWindowListener 
  • Window events are enabled via enableEvents 


Note that if the event parameter is null the behavior is unspecified and may result in an exception. 
Params:
  • e – the window event
See Also:
/**
     * 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:

    

  • a WindowFocusListener is registered via addWindowFocusListener 
  • Window focus events are enabled via enableEvents 


Note that if the event parameter is null the behavior is unspecified and may result in an exception. 
Params:
  • e – the window focus event
See Also:
Since:1.4
/**
     * 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 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: 
    

  • a WindowStateListener is registered via addWindowStateListener 
  • window state events are enabled via enableEvents 


Note that if the event parameter is null the behavior is unspecified and may result in an exception. 
Params:
  • e – the window state event
See Also:
Since:1.4
/**
     * 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 control-shift-F1. If so, the list of child windows is dumped to System.out. 
Params:
  • e –  the keyboard event
/**
     * 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.


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.

 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 
toBack, its always-on-top state is set to false. 
 When this method is called on a window with a value of 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 true but does not bring the window forward. When the window is later shown, it will be always-on-top. 
 When this method is called on a window with a value of 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 false on a window that has a normal state has no effect. 
Note: some platforms might not support always-on-top windows. To detect if always-on-top windows are supported by the current platform, use Toolkit.isAlwaysOnTopSupported() and 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. 

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.

Params:
  • 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 Also:
Since:1.5
/**
     * 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.

See Also:
Returns:true, if the always-on-top mode is supported for this window and this window's toolkit supports always-on-top windows, false otherwise
Since:1.6
/**
     * 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.

See Also:
Returns:true, if the window is in always-on-top state, false otherwise
Since:1.5
/**
     * 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.

See Also:
Returns:the child Component with focus, or null if this Window is not
        focused
/**
     * 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 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. 
See Also:
Returns:the child Component that will receive focus when this Window is
        focused
Since:1.4
/**
     * 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.

See Also:
Returns:whether this is the active Window.
Since:1.4
/**
     * 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.


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.

See Also:
Returns:whether this is the focused Window.
Since:1.4
/**
     * 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 
setFocusTraversalKeys for a full description of each key.) 

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.

Params:
  • id – one of KeyboardFocusManager.FORWARD_TRAVERSAL_KEYS,
        KeyboardFocusManager.BACKWARD_TRAVERSAL_KEYS,
        KeyboardFocusManager.UP_CYCLE_TRAVERSAL_KEYS, or
        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
See Also:
Returns:the AWTKeyStroke for the specified key
Since:1.4
/**
     * 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.

Params:
  • focusCycleRoot – this value is ignored
See Also:
Since:1.4
/**
     * 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 true because all Windows must be roots of a focus traversal cycle. 
See Also:
Returns:true
Since:1.4
/**
     * 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 null because Windows have no ancestors; they represent the top of the Component hierarchy. 
See Also:
Returns:null
Since:1.4
/**
     * 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 true. For a Window which is not a Frame or Dialog to be focusable, its focusable Window state must be set to 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. 
See Also:
Returns:true if this Window can be the focused Window; false otherwise
Since:1.4
/**
     * 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 isFocusableWindow. If this method returns false, then isFocusableWindow will return false as well. If this method returns true, then isFocusableWindow may return true or false depending upon the other requirements which must be met in order for a Window to be focusable. 
 By default, all Windows have a focusable Window state of true. 
See Also:
Returns:whether this Window can be the focused Window
Since:1.4
/**
     * 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 isFocusableWindow. If this Window's focusable Window state is set to false, then isFocusableWindow will return false. If this Window's focusable Window state is set to true, then isFocusableWindow may return true or false depending upon the other requirements which must be met in order for a Window to be focusable. 
 Setting a Window's focusability state to 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 Window can have a delayed effect on some platforms — the actual change may happen only when the Window becomes hidden and then visible again. To ensure consistent behavior across platforms, set the Window's focusable state when the Window is invisible and then show it. 
Params:
  • focusableWindowState – whether this Window can be the focused
       Window
See Also:
Since:1.4
/**
     * 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 &#151; 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 setVisible(true)), or being moved to the front (with a call to toFront). 
 Note that setVisible(true) may be called indirectly (e.g. when showing an owner of the window makes the window to be shown). toFront may also be called indirectly (e.g. when setVisible(true) is called on already visible window). In all such cases this property takes effect as well. 

The value of the property is not inherited by owned windows.

Params:
  • autoRequestFocus – whether this window should be focused on
       subsequently being shown or being moved to the front
See Also:
Since:1.7
/**
     * 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 setVisible(true)), or being moved to the front (with a call to toFront). 
 By default, the window has autoRequestFocus value of true. 
See Also:
Returns:autoRequestFocus value
Since:1.7
/**
     * 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:

    
   
  • this Window's font ("font")
    • 
   
  • this Window's background color ("background")
    • 
   
  • this Window's foreground color ("foreground")
    • 
   
  • this Window's focusability ("focusable")
    • 
   
  • this Window's focus traversal keys enabled state
       ("focusTraversalKeysEnabled")
    • 
   
  • this Window's Set of FORWARD_TRAVERSAL_KEYS
       ("forwardFocusTraversalKeys")
    • 
   
  • this Window's Set of BACKWARD_TRAVERSAL_KEYS
       ("backwardFocusTraversalKeys")
    • 
   
  • this Window's Set of UP_CYCLE_TRAVERSAL_KEYS
       ("upCycleFocusTraversalKeys")
    • 
   
  • this Window's Set of DOWN_CYCLE_TRAVERSAL_KEYS
       ("downCycleFocusTraversalKeys")
    • 
   
  • this Window's focus traversal policy ("focusTraversalPolicy")
       
    • 
   
  • this Window's focusable Window state ("focusableWindowState")
       
    • 
   
  • this Window's always-on-top state("alwaysOnTop")
    • 


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.


If listener is null, no exception is thrown and no action is performed.

Params:
  • listener –  the PropertyChangeListener to be added
See Also:
/**
     * 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:

    
   
  • this Window's font ("font")
    • 
   
  • this Window's background color ("background")
    • 
   
  • this Window's foreground color ("foreground")
    • 
   
  • this Window's focusability ("focusable")
    • 
   
  • this Window's focus traversal keys enabled state
       ("focusTraversalKeysEnabled")
    • 
   
  • this Window's Set of FORWARD_TRAVERSAL_KEYS
       ("forwardFocusTraversalKeys")
    • 
   
  • this Window's Set of BACKWARD_TRAVERSAL_KEYS
       ("backwardFocusTraversalKeys")
    • 
   
  • this Window's Set of UP_CYCLE_TRAVERSAL_KEYS
       ("upCycleFocusTraversalKeys")
    • 
   
  • this Window's Set of DOWN_CYCLE_TRAVERSAL_KEYS
       ("downCycleFocusTraversalKeys")
    • 
   
  • this Window's focus traversal policy ("focusTraversalPolicy")
       
    • 
   
  • this Window's focusable Window state ("focusableWindowState")
       
    • 
   
  • this Window's always-on-top state("alwaysOnTop")
    • 


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.


If listener is null, no exception is thrown and no action is performed.

Params:
  • propertyName – one of the property names listed above
  • listener – the PropertyChangeListener to be added
See Also:
/**
     * 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.

 Window objects are the validate roots, and, therefore, they override this method to return true. 
See Also:
Returns:true
Since:1.7
/**
     * 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.

Params:
  • e – the event
/**
     * 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 dispatchEvent(AWTEvent).
/**
     * @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 Also:
  • setVisible.setVisible
/**
     * 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 Component.applyComponentOrientation.
/**
     * @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 Component.applyComponentOrientation.
/**
     * @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

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

    
The window serialized data version.

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

    
Writes default serializable fields to stream. Writes a list of serializable WindowListeners and WindowFocusListeners as optional data. Writes a list of child windows as optional data. Writes a list of icon images as optional data 
Params:
  • s – the ObjectOutputStream to write
See Also:
@serialDatanull terminated sequence of 0 or more pairs; the pair consists of a String and Object; the String indicates the type of object and is one of the following: windowListenerK indicating a WindowListener object; windowFocusWindowK indicating a WindowFocusListener object; ownedWindowK indicating a child Window object
/**
     * 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 ObjectInputStream and an optional list of listeners to receive various events fired by the component; also reads a list of (possibly null) child windows. Unrecognized keys or values will be ignored. 
Params:
  • s – the ObjectInputStream to read
Throws:
See Also:
/**
     * 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.

Returns:an AccessibleAWTWindow that serves as the
        AccessibleContext of this Window
Since:1.3
/**
     * 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 Window class. It provides an implementation of the Java Accessibility API appropriate to window user-interface elements. 
Since:1.3
/**
     * 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.

See Also:
Returns:an instance of AccessibleRole describing the role of the
object
/**
         * 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.

See Also:
Returns:an instance of AccessibleStateSet containing the current
state set of the object
/**
         * 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.


The target screen mentioned below is a screen to which
the window should be placed after the setLocationRelativeTo
method is called.

    

  • If the component is null, or the 
GraphicsConfiguration associated with this component is null, the window is placed in the center of the screen. The center point can be obtained with the 
GraphicsEnvironment.getCenterPoint method. 
  • If the component is not null, but it is not currently showing, the window is placed in the center of the target screen defined by the 
GraphicsConfiguration associated with this component. 
  • If the component is not 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. 


 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 GraphicsConfiguration is not changed. 

Note: If the lower edge of the window is out of the screen, then the window is placed to the side of the 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. 

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.

 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 Window object is placed and sized in a way that corresponds closely to the desktop settings. 
Params:
  • c –  the component in relation to which the window's location
          is determined
See Also:
Since:1.4
/**
     * 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.

/**
     * 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

/**
     * 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 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. 

Each time this method is called,
the existing buffer strategy for this component is discarded.

Params:
  • numBuffers – number of buffers to create
Throws:
See Also:
Since:1.4
/**
     * 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).


Each time this method
is called, the existing buffer strategy for this component is discarded.

Params:
  • numBuffers – number of buffers to create, including the front buffer
  • caps – the required capabilities for creating the buffer strategy; cannot be null
Throws:
  • 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.
  • IllegalArgumentException – if numBuffers is less than 1, or if caps is null
See Also:
Since:1.4
/**
     * 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 BufferStrategy used by this component. This method will return null if a BufferStrategy has not yet been created or has been disposed. 
See Also:
Returns:the buffer strategy used by this component
Since:1.4
/**
     * 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
/**
     * 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 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. 

This behavior can also be enabled by setting the System Property
"java.awt.Window.locationByPlatform" to "true", though calls to this method
take precedence.

 Calls to setVisible, setLocation and setBounds after calling setLocationByPlatform clear this property of the Window. 

For example, after the following code is executed:

setLocationByPlatform(true);
setVisible(true);
boolean flag = isLocationByPlatform();

 The window will be shown at platform's default location and flag will be false. 

In the following sample:

setLocationByPlatform(true);
setLocation(10, 10);
boolean flag = isLocationByPlatform();
setVisible(true);

 The window will be shown at (10, 10) and flag will be false. 
Params:
  • locationByPlatform – true if this Window should appear at the default location, false if at the current location
Throws:
See Also:
Since:1.5
/**
     * 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 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 false if the Window is showing on the screen. 
See Also:
Returns:whether this Window will appear at the default location
Since:1.5
/**
     * 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}

 The width or height values are automatically enlarged if either is less than the minimum size as specified by previous call to setMinimumSize. 
 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 Window object is placed and sized in a way that corresponds closely to the desktop settings. 
See Also:
Since:1.6
/**
     * {@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}

 The r.width or r.height values will be automatically enlarged if either is less than the minimum size as specified by previous call to setMinimumSize. 
 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 Window object is placed and sized in a way that corresponds closely to the desktop settings. 
See Also:
Since:1.6
/**
     * {@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.

Returns:true if the component and all of its ancestors until a toplevel window are visible, false otherwise
/**
     * 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.

See Also:
Returns:the opacity of the window
Since:1.7
/**
     * 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.


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.

 The following conditions must be met in order to set the opacity value less than 1.0f: 


 If the requested opacity value is less than 1.0f, and any of the above conditions are not met, the window opacity will not change, and the IllegalComponentStateException will be thrown. 
 The translucency levels of individual pixels may also be effected by the alpha component of their color (see setBackground(Color)) and the current shape of this window (see setShape(Shape)). 
Params:
  • opacity – the opacity level to set to the window
Throws:
See Also:
Since:1.7
/**
     * 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 setShape(shape), but it is guaranteed to represent the same shape. 
See Also:
Returns:the shape of the window or null if no shape is specified for the window
Since:1.7
/**
     * 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.

 Setting a shape cuts off some parts of the window. Only the parts that belong to the given Shape remain visible and clickable. If the shape argument is null, this method restores the default shape, making the window rectangular on most platforms. 

The following conditions must be met to set a non-null shape:



 If the requested shape is not null, and any of the above conditions are not met, the shape of this window will not change, and either the UnsupportedOperationException or 
IllegalComponentStateException will be thrown. 
 The translucency levels of individual pixels may also be effected by the alpha component of their color (see setBackground(Color)) and the opacity value (see setOpacity(float)). See WindowTranslucency for more details. 
Params:
  • shape – the shape to set to the window
Throws:
See Also:
Since:1.7
/**
     * 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.


Note that the alpha component of the returned color indicates whether
the window is in the non-opaque (per-pixel translucent) mode.

See Also:
Returns:this component's background color
/**
     * 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.

 If the windowing system supports the 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 1.0f) or per-pixel translucent (alpha is less than 1.0f). If the given background color is null, the window is considered completely opaque. 

All the following conditions must be met to enable the per-pixel
transparency mode for this window:



 If the alpha component of the requested background color is less than 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 UnsupportedOperationException or 
IllegalComponentStateException will be thrown. 
 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 0, the background is not painted at all. 
 The actual level of translucency of a given pixel also depends on window opacity (see setOpacity(float)), as well as the current shape of this window (see setShape(Shape)). 
 Note that painting a pixel with the alpha value of 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. 

Enabling the per-pixel translucency mode may change the graphics
configuration of this window due to the native platform requirements.

Params:
  • bgColor – the color to become this window's background color.
Throws:
See Also:
/**
     * 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.

 The method returns false if the background color of the window is not null and the alpha component of the color is less than 1.0f. The method returns true otherwise. 
See Also:
Returns:true if the window is opaque, false otherwise
Since:1.7
/**
     * 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
/**
     * {@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

Params:
  • shape – Shape to be applied to the component
/**
     * 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.

/**
     * 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.

/**
     * 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.

/**
 * 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;
}