https://openjdk.java.net/ 
/*
 * Copyright (c) 1997, 2013, 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 javax.swing;

import java.awt.*;
import java.awt.event.*;
import java.beans.PropertyChangeListener;
import java.util.Locale;
import java.util.Vector;
import java.io.Serializable;

import javax.accessibility.*;


A JWindow is a container that can be displayed anywhere on the
user's desktop. It does not have the title bar, window-management buttons,
or other trimmings associated with a JFrame, but it is still a
"first-class citizen" of the user's desktop, and can exist anywhere
on it.


The JWindow component contains a JRootPane
as its only child.  The contentPane should be the parent
of any children of the JWindow. As a convenience, the add, remove, and setLayout methods of this class are overridden, so that they delegate calls to the corresponding methods of the ContentPane. For example, you can add a child component to a window as follows: 
      window.add(child);


And the child will be added to the contentPane.
The contentPane will always be non-null.
Attempting to set it to null will cause the JWindow
to throw an exception. The default contentPane will have a
BorderLayout manager set on it. Refer to RootPaneContainer for details on adding, removing and setting the LayoutManager
of a JWindow.

 Please see the JRootPane documentation for a complete description of the contentPane, glassPane, and
layeredPane components.


In a multi-screen environment, you can create a JWindow on a different screen device. See Window for more information. 

Warning: Swing is not thread safe. For more
information see Swing's Threading
Policy.


Warning:
Serialized objects of this class will not be compatible with
future Swing releases. The current serialization support is
appropriate for short term storage or RMI between applications running
the same version of Swing.  As of 1.4, support for long term storage
of all JavaBeans™
has been added to the java.beans package. Please see XMLEncoder. 
Author:David Kloba
See Also:
@beaninfo
     attribute: isContainer true
     attribute: containerDelegate getContentPane
   description: A toplevel window which has no system border or controls.
/**
 * A <code>JWindow</code> is a container that can be displayed anywhere on the
 * user's desktop. It does not have the title bar, window-management buttons,
 * or other trimmings associated with a <code>JFrame</code>, but it is still a
 * "first-class citizen" of the user's desktop, and can exist anywhere
 * on it.
 * <p>
 * The <code>JWindow</code> component contains a <code>JRootPane</code>
 * as its only child.  The <code>contentPane</code> should be the parent
 * of any children of the <code>JWindow</code>.
 * As a convenience, the {@code add}, {@code remove}, and {@code setLayout}
 * methods of this class are overridden, so that they delegate calls
 * to the corresponding methods of the {@code ContentPane}.
 * For example, you can add a child component to a window as follows:
 * <pre>
 *       window.add(child);
 * </pre>
 * And the child will be added to the contentPane.
 * The <code>contentPane</code> will always be non-<code>null</code>.
 * Attempting to set it to <code>null</code> will cause the <code>JWindow</code>
 * to throw an exception. The default <code>contentPane</code> will have a
 * <code>BorderLayout</code> manager set on it.
 * Refer to {@link javax.swing.RootPaneContainer}
 * for details on adding, removing and setting the <code>LayoutManager</code>
 * of a <code>JWindow</code>.
 * <p>
 * Please see the {@link JRootPane} documentation for a complete description of
 * the <code>contentPane</code>, <code>glassPane</code>, and
 * <code>layeredPane</code> components.
 * <p>
 * In a multi-screen environment, you can create a <code>JWindow</code>
 * on a different screen device.  See {@link java.awt.Window} for more
 * information.
 * <p>
 * <strong>Warning:</strong> Swing is not thread safe. For more
 * information see <a
 * href="package-summary.html#threading">Swing's Threading
 * Policy</a>.
 * <p>
 * <strong>Warning:</strong>
 * Serialized objects of this class will not be compatible with
 * future Swing releases. The current serialization support is
 * appropriate for short term storage or RMI between applications running
 * the same version of Swing.  As of 1.4, support for long term storage
 * of all JavaBeans&trade;
 * has been added to the <code>java.beans</code> package.
 * Please see {@link java.beans.XMLEncoder}.
 *
 * @see JRootPane
 *
 * @beaninfo
 *      attribute: isContainer true
 *      attribute: containerDelegate getContentPane
 *    description: A toplevel window which has no system border or controls.
 *
 * @author David Kloba
 */
@SuppressWarnings("serial")
public class JWindow extends Window implements Accessible,
                                               RootPaneContainer,
                               TransferHandler.HasGetTransferHandler
{
    
The JRootPane instance that manages the
contentPane
and optional menuBar for this frame, as well as the
glassPane.

See Also:
/**
     * The <code>JRootPane</code> instance that manages the
     * <code>contentPane</code>
     * and optional <code>menuBar</code> for this frame, as well as the
     * <code>glassPane</code>.
     *
     * @see #getRootPane
     * @see #setRootPane
     */
    protected JRootPane rootPane;

    
If true then calls to add and setLayout
will be forwarded to the contentPane. This is initially
false, but is set to true when the JWindow is constructed.

See Also:
/**
     * If true then calls to <code>add</code> and <code>setLayout</code>
     * will be forwarded to the <code>contentPane</code>. This is initially
     * false, but is set to true when the <code>JWindow</code> is constructed.
     *
     * @see #isRootPaneCheckingEnabled
     * @see #setRootPaneCheckingEnabled
     * @see javax.swing.RootPaneContainer
     */
    protected boolean rootPaneCheckingEnabled = false;

    
The TransferHandler for this window.

/**
     * The <code>TransferHandler</code> for this window.
     */
    private TransferHandler transferHandler;

    
Creates a window with no specified owner. This window will not be
focusable.


This constructor sets the component's locale property to the value
returned by JComponent.getDefaultLocale.

Throws:
  • HeadlessException – if
        GraphicsEnvironment.isHeadless() returns true.
See Also:
/**
     * Creates a window with no specified owner. This window will not be
     * focusable.
     * <p>
     * This constructor sets the component's locale property to the value
     * returned by <code>JComponent.getDefaultLocale</code>.
     *
     * @throws HeadlessException if
     *         <code>GraphicsEnvironment.isHeadless()</code> returns true.
     * @see java.awt.GraphicsEnvironment#isHeadless
     * @see #isFocusableWindow
     * @see JComponent#getDefaultLocale
     */
    public JWindow() {
        this((Frame)null);
    }

    
Creates a window with the specified GraphicsConfiguration
of a screen device. This window will not be focusable.


This constructor sets the component's locale property to the value
returned by JComponent.getDefaultLocale.

Params:
  • gc – the GraphicsConfiguration that is used
         to construct the new window with; if gc is null,
         the system default GraphicsConfiguration
         is assumed
Throws:
See Also:
Since: 1.3
/**
     * Creates a window with the specified <code>GraphicsConfiguration</code>
     * of a screen device. This window will not be focusable.
     * <p>
     * This constructor sets the component's locale property to the value
     * returned by <code>JComponent.getDefaultLocale</code>.
     *
     * @param gc the <code>GraphicsConfiguration</code> that is used
     *          to construct the new window with; if gc is <code>null</code>,
     *          the system default <code>GraphicsConfiguration</code>
     *          is assumed
     * @throws HeadlessException If
     *         <code>GraphicsEnvironment.isHeadless()</code> returns true.
     * @throws IllegalArgumentException if <code>gc</code> is not from
     *         a screen device.
     *
     * @see java.awt.GraphicsEnvironment#isHeadless
     * @see #isFocusableWindow
     * @see JComponent#getDefaultLocale
     *
     * @since  1.3
     */
    public JWindow(GraphicsConfiguration gc) {
        this(null, gc);
        super.setFocusableWindowState(false);
    }

    
Creates a window with the specified owner frame.
If owner is null, the shared owner
will be used and this window will not be focusable. Also,
this window will not be focusable unless its owner is showing
on the screen.


This constructor sets the component's locale property to the value
returned by JComponent.getDefaultLocale.

Params:
  • owner – the frame from which the window is displayed
Throws:
See Also:
/**
     * Creates a window with the specified owner frame.
     * If <code>owner</code> is <code>null</code>, the shared owner
     * will be used and this window will not be focusable. Also,
     * this window will not be focusable unless its owner is showing
     * on the screen.
     * <p>
     * This constructor sets the component's locale property to the value
     * returned by <code>JComponent.getDefaultLocale</code>.
     *
     * @param owner the frame from which the window is displayed
     * @throws HeadlessException if GraphicsEnvironment.isHeadless()
     *            returns true.
     * @see java.awt.GraphicsEnvironment#isHeadless
     * @see #isFocusableWindow
     * @see JComponent#getDefaultLocale
     */
    public JWindow(Frame owner) {
        super(owner == null? SwingUtilities.getSharedOwnerFrame() : owner);
        if (owner == null) {
            WindowListener ownerShutdownListener =
                    SwingUtilities.getSharedOwnerFrameShutdownListener();
            addWindowListener(ownerShutdownListener);
        }
        windowInit();
    }

    
Creates a window with the specified owner window. This window
will not be focusable unless its owner is showing on the screen.
If owner is null, the shared owner
will be used and this window will not be focusable.


This constructor sets the component's locale property to the value
returned by JComponent.getDefaultLocale.

Params:
  • owner – the window from which the window is displayed
Throws:
See Also:
/**
     * Creates a window with the specified owner window. This window
     * will not be focusable unless its owner is showing on the screen.
     * If <code>owner</code> is <code>null</code>, the shared owner
     * will be used and this window will not be focusable.
     * <p>
     * This constructor sets the component's locale property to the value
     * returned by <code>JComponent.getDefaultLocale</code>.
     *
     * @param owner the window from which the window is displayed
     * @throws HeadlessException if
     *         <code>GraphicsEnvironment.isHeadless()</code> returns true.
     * @see java.awt.GraphicsEnvironment#isHeadless
     * @see #isFocusableWindow
     * @see JComponent#getDefaultLocale
     */
    public JWindow(Window owner) {
        super(owner == null ? (Window)SwingUtilities.getSharedOwnerFrame() :
              owner);
        if (owner == null) {
            WindowListener ownerShutdownListener =
                    SwingUtilities.getSharedOwnerFrameShutdownListener();
            addWindowListener(ownerShutdownListener);
        }
        windowInit();
    }

    
Creates a window with the specified owner window and
GraphicsConfiguration of a screen device. If
owner is null, the shared owner will be used
and this window will not be focusable.


This constructor sets the component's locale property to the value
returned by JComponent.getDefaultLocale.

Params:
  • owner – the window from which the window is displayed
  • gc – the GraphicsConfiguration that is used
         to construct the new window with; if gc is null,
         the system default GraphicsConfiguration
         is assumed, unless owner is also null, in which
         case the GraphicsConfiguration from the
         shared owner frame will be used.
Throws:
See Also:
Since: 1.3
/**
     * Creates a window with the specified owner window and
     * <code>GraphicsConfiguration</code> of a screen device. If
     * <code>owner</code> is <code>null</code>, the shared owner will be used
     * and this window will not be focusable.
     * <p>
     * This constructor sets the component's locale property to the value
     * returned by <code>JComponent.getDefaultLocale</code>.
     *
     * @param owner the window from which the window is displayed
     * @param gc the <code>GraphicsConfiguration</code> that is used
     *          to construct the new window with; if gc is <code>null</code>,
     *          the system default <code>GraphicsConfiguration</code>
     *          is assumed, unless <code>owner</code> is also null, in which
     *          case the <code>GraphicsConfiguration</code> from the
     *          shared owner frame will be used.
     * @throws HeadlessException if
     *         <code>GraphicsEnvironment.isHeadless()</code> returns true.
     * @throws IllegalArgumentException if <code>gc</code> is not from
     *         a screen device.
     *
     * @see java.awt.GraphicsEnvironment#isHeadless
     * @see #isFocusableWindow
     * @see JComponent#getDefaultLocale
     *
     * @since  1.3
     */
    public JWindow(Window owner, GraphicsConfiguration gc) {
        super(owner == null ? (Window)SwingUtilities.getSharedOwnerFrame() :
              owner, gc);
        if (owner == null) {
            WindowListener ownerShutdownListener =
                    SwingUtilities.getSharedOwnerFrameShutdownListener();
            addWindowListener(ownerShutdownListener);
        }
        windowInit();
    }

    
Called by the constructors to init the JWindow properly.

/**
     * Called by the constructors to init the <code>JWindow</code> properly.
     */
    protected void windowInit() {
        setLocale( JComponent.getDefaultLocale() );
        setRootPane(createRootPane());
        setRootPaneCheckingEnabled(true);
        sun.awt.SunToolkit.checkAndSetPolicy(this);
    }

    
Called by the constructor methods to create the default
rootPane.

/**
     * Called by the constructor methods to create the default
     * <code>rootPane</code>.
     */
    protected JRootPane createRootPane() {
        JRootPane rp = new JRootPane();
        // NOTE: this uses setOpaque vs LookAndFeel.installProperty as there
        // is NO reason for the RootPane not to be opaque. For painting to
        // work the contentPane must be opaque, therefor the RootPane can
        // also be opaque.
        rp.setOpaque(true);
        return rp;
    }

    
Returns whether calls to add and
setLayout are forwarded to the contentPane.

See Also:
Returns:true if add and setLayout
        are forwarded; false otherwise
/**
     * Returns whether calls to <code>add</code> and
     * <code>setLayout</code> are forwarded to the <code>contentPane</code>.
     *
     * @return true if <code>add</code> and <code>setLayout</code>
     *         are forwarded; false otherwise
     *
     * @see #addImpl
     * @see #setLayout
     * @see #setRootPaneCheckingEnabled
     * @see javax.swing.RootPaneContainer
     */
    protected boolean isRootPaneCheckingEnabled() {
        return rootPaneCheckingEnabled;
    }

    
Sets the transferHandler property, which is a mechanism to support transfer of data into this component. Use null if the component does not support data transfer operations. 
 If the system property suppressSwingDropSupport is false (the default) and the current drop target on this component is either null or not a user-set drop target, this method will change the drop target as follows: If newHandler is null it will clear the drop target. If not null it will install a new DropTarget. 
 Note: When used with JWindow, TransferHandler only provides data import capability, as the data export related methods are currently typed to JComponent. 

Please see

How to Use Drag and Drop and Data Transfer, a section in
The Java Tutorial, for more information.

Params:
  • newHandler – the new TransferHandler
See Also:
Since:1.6
@beaninfo
       bound: true
      hidden: true
 description: Mechanism for transfer of data into the component
/**
     * Sets the {@code transferHandler} property, which is a mechanism to
     * support transfer of data into this component. Use {@code null}
     * if the component does not support data transfer operations.
     * <p>
     * If the system property {@code suppressSwingDropSupport} is {@code false}
     * (the default) and the current drop target on this component is either
     * {@code null} or not a user-set drop target, this method will change the
     * drop target as follows: If {@code newHandler} is {@code null} it will
     * clear the drop target. If not {@code null} it will install a new
     * {@code DropTarget}.
     * <p>
     * Note: When used with {@code JWindow}, {@code TransferHandler} only
     * provides data import capability, as the data export related methods
     * are currently typed to {@code JComponent}.
     * <p>
     * Please see
     * <a href="https://docs.oracle.com/javase/tutorial/uiswing/dnd/index.html">
     * How to Use Drag and Drop and Data Transfer</a>, a section in
     * <em>The Java Tutorial</em>, for more information.
     *
     * @param newHandler the new {@code TransferHandler}
     *
     * @see TransferHandler
     * @see #getTransferHandler
     * @see java.awt.Component#setDropTarget
     * @since 1.6
     *
     * @beaninfo
     *        bound: true
     *       hidden: true
     *  description: Mechanism for transfer of data into the component
     */
    public void setTransferHandler(TransferHandler newHandler) {
        TransferHandler oldHandler = transferHandler;
        transferHandler = newHandler;
        SwingUtilities.installSwingDropTargetAsNecessary(this, transferHandler);
        firePropertyChange("transferHandler", oldHandler, newHandler);
    }

    
Gets the transferHandler property.

See Also:
Returns:the value of the transferHandler property
Since:1.6
/**
     * Gets the <code>transferHandler</code> property.
     *
     * @return the value of the <code>transferHandler</code> property
     *
     * @see TransferHandler
     * @see #setTransferHandler
     * @since 1.6
     */
    public TransferHandler getTransferHandler() {
        return transferHandler;
    }

    
Calls paint(g).  This method was overridden to
prevent an unnecessary call to clear the background.

Params:
  • g –  the Graphics context in which to paint
/**
     * Calls <code>paint(g)</code>.  This method was overridden to
     * prevent an unnecessary call to clear the background.
     *
     * @param g  the <code>Graphics</code> context in which to paint
     */
    public void update(Graphics g) {
        paint(g);
    }

    
Sets whether calls to add and
setLayout are forwarded to the contentPane.

Params:
  • enabled –  true if add and setLayout
       are forwarded, false if they should operate directly on the
       JWindow.
See Also:
@beaninfo
     hidden: true
description: Whether the add and setLayout methods are forwarded
/**
     * Sets whether calls to <code>add</code> and
     * <code>setLayout</code> are forwarded to the <code>contentPane</code>.
     *
     * @param enabled  true if <code>add</code> and <code>setLayout</code>
     *        are forwarded, false if they should operate directly on the
     *        <code>JWindow</code>.
     *
     * @see #addImpl
     * @see #setLayout
     * @see #isRootPaneCheckingEnabled
     * @see javax.swing.RootPaneContainer
     * @beaninfo
     *      hidden: true
     * description: Whether the add and setLayout methods are forwarded
     */
    protected void setRootPaneCheckingEnabled(boolean enabled) {
        rootPaneCheckingEnabled = enabled;
    }


    
Adds the specified child Component.
This method is overridden to conditionally forward calls to the
contentPane.
By default, children are added to the contentPane instead of the frame, refer to RootPaneContainer for details. 
Params:
  • comp – the component to be enhanced
  • constraints – the constraints to be respected
  • index – the index
Throws:
See Also:
/**
     * Adds the specified child <code>Component</code>.
     * This method is overridden to conditionally forward calls to the
     * <code>contentPane</code>.
     * By default, children are added to the <code>contentPane</code> instead
     * of the frame, refer to {@link javax.swing.RootPaneContainer} for
     * details.
     *
     * @param comp the component to be enhanced
     * @param constraints the constraints to be respected
     * @param index the index
     * @exception IllegalArgumentException if <code>index</code> is invalid
     * @exception IllegalArgumentException if adding the container's parent
     *                  to itself
     * @exception IllegalArgumentException if adding a window to a container
     *
     * @see #setRootPaneCheckingEnabled
     * @see javax.swing.RootPaneContainer
     */
    protected void addImpl(Component comp, Object constraints, int index)
    {
        if(isRootPaneCheckingEnabled()) {
            getContentPane().add(comp, constraints, index);
        }
        else {
            super.addImpl(comp, constraints, index);
        }
    }

    
Removes the specified component from the container. If
comp is not the rootPane, this will forward
the call to the contentPane. This will do nothing if
comp is not a child of the JWindow or
contentPane.

Params:
  • comp – the component to be removed
Throws:
See Also:
/**
     * Removes the specified component from the container. If
     * <code>comp</code> is not the <code>rootPane</code>, this will forward
     * the call to the <code>contentPane</code>. This will do nothing if
     * <code>comp</code> is not a child of the <code>JWindow</code> or
     * <code>contentPane</code>.
     *
     * @param comp the component to be removed
     * @throws NullPointerException if <code>comp</code> is null
     * @see #add
     * @see javax.swing.RootPaneContainer
     */
    public void remove(Component comp) {
        if (comp == rootPane) {
            super.remove(comp);
        } else {
            getContentPane().remove(comp);
        }
    }


    
Sets the LayoutManager.
Overridden to conditionally forward the call to the
contentPane. Refer to RootPaneContainer for more information. 
Params:
  • manager – the LayoutManager
See Also:
/**
     * Sets the <code>LayoutManager</code>.
     * Overridden to conditionally forward the call to the
     * <code>contentPane</code>.
     * Refer to {@link javax.swing.RootPaneContainer} for
     * more information.
     *
     * @param manager the <code>LayoutManager</code>
     * @see #setRootPaneCheckingEnabled
     * @see javax.swing.RootPaneContainer
     */
    public void setLayout(LayoutManager manager) {
        if(isRootPaneCheckingEnabled()) {
            getContentPane().setLayout(manager);
        }
        else {
            super.setLayout(manager);
        }
    }


    
Returns the rootPane object for this window.

See Also:
Returns:the rootPane property for this window
/**
     * Returns the <code>rootPane</code> object for this window.
     * @return the <code>rootPane</code> property for this window
     *
     * @see #setRootPane
     * @see RootPaneContainer#getRootPane
     */
    public JRootPane getRootPane() {
        return rootPane;
    }


    
Sets the new rootPane object for this window.
This method is called by the constructor.

Params:
  • root – the new rootPane property
See Also:
@beaninfo
       hidden: true
  description: the RootPane object for this window.
/**
     * Sets the new <code>rootPane</code> object for this window.
     * This method is called by the constructor.
     *
     * @param root the new <code>rootPane</code> property
     * @see #getRootPane
     *
     * @beaninfo
     *        hidden: true
     *   description: the RootPane object for this window.
     */
    protected void setRootPane(JRootPane root) {
        if(rootPane != null) {
            remove(rootPane);
        }
        rootPane = root;
        if(rootPane != null) {
            boolean checkingEnabled = isRootPaneCheckingEnabled();
            try {
                setRootPaneCheckingEnabled(false);
                add(rootPane, BorderLayout.CENTER);
            }
            finally {
                setRootPaneCheckingEnabled(checkingEnabled);
            }
        }
    }


    
Returns the Container which is the contentPane
for this window.

See Also:
Returns:the contentPane property
/**
     * Returns the <code>Container</code> which is the <code>contentPane</code>
     * for this window.
     *
     * @return the <code>contentPane</code> property
     * @see #setContentPane
     * @see RootPaneContainer#getContentPane
     */
    public Container getContentPane() {
        return getRootPane().getContentPane();
    }

    
Sets the contentPane property for this window.
This method is called by the constructor.

Params:
  • contentPane – the new contentPane
Throws:
See Also:
@beaninfo
    hidden: true
    description: The client area of the window where child
                 components are normally inserted.
/**
     * Sets the <code>contentPane</code> property for this window.
     * This method is called by the constructor.
     *
     * @param contentPane the new <code>contentPane</code>
     *
     * @exception IllegalComponentStateException (a runtime
     *            exception) if the content pane parameter is <code>null</code>
     * @see #getContentPane
     * @see RootPaneContainer#setContentPane
     *
     * @beaninfo
     *     hidden: true
     *     description: The client area of the window where child
     *                  components are normally inserted.
     */
    public void setContentPane(Container contentPane) {
        getRootPane().setContentPane(contentPane);
    }

    
Returns the layeredPane object for this window.

See Also:
Returns:the layeredPane property
/**
     * Returns the <code>layeredPane</code> object for this window.
     *
     * @return the <code>layeredPane</code> property
     * @see #setLayeredPane
     * @see RootPaneContainer#getLayeredPane
     */
    public JLayeredPane getLayeredPane() {
        return getRootPane().getLayeredPane();
    }

    
Sets the layeredPane property.
This method is called by the constructor.

Params:
  • layeredPane – the new layeredPane object
Throws:
See Also:
@beaninfo
    hidden: true
    description: The pane which holds the various window layers.
/**
     * Sets the <code>layeredPane</code> property.
     * This method is called by the constructor.
     *
     * @param layeredPane the new <code>layeredPane</code> object
     *
     * @exception IllegalComponentStateException (a runtime
     *            exception) if the content pane parameter is <code>null</code>
     * @see #getLayeredPane
     * @see RootPaneContainer#setLayeredPane
     *
     * @beaninfo
     *     hidden: true
     *     description: The pane which holds the various window layers.
     */
    public void setLayeredPane(JLayeredPane layeredPane) {
        getRootPane().setLayeredPane(layeredPane);
    }

    
Returns the glassPane Component for this window.

See Also:
Returns:the glassPane property
/**
     * Returns the <code>glassPane Component</code> for this window.
     *
     * @return the <code>glassPane</code> property
     * @see #setGlassPane
     * @see RootPaneContainer#getGlassPane
     */
    public Component getGlassPane() {
        return getRootPane().getGlassPane();
    }

    
Sets the glassPane property.
This method is called by the constructor.

Params:
  • glassPane – the glassPane object for this window
See Also:
@beaninfo
    hidden: true
    description: A transparent pane used for menu rendering.
/**
     * Sets the <code>glassPane</code> property.
     * This method is called by the constructor.
     * @param glassPane the <code>glassPane</code> object for this window
     *
     * @see #getGlassPane
     * @see RootPaneContainer#setGlassPane
     *
     * @beaninfo
     *     hidden: true
     *     description: A transparent pane used for menu rendering.
     */
    public void setGlassPane(Component glassPane) {
        getRootPane().setGlassPane(glassPane);
    }

    
{@inheritDoc}

Since:1.6
/**
     * {@inheritDoc}
     *
     * @since 1.6
     */
    public Graphics getGraphics() {
        JComponent.getGraphicsInvoked(this);
        return super.getGraphics();
    }

    
Repaints the specified rectangle of this component within
time milliseconds.  Refer to RepaintManager
for details on how the repaint is handled.

Params:
  • time –   maximum time in milliseconds before update
  • x –    the x coordinate
  • y –    the y coordinate
  • width –    the width
  • height –   the height
See Also:
Since:    1.6
/**
     * Repaints the specified rectangle of this component within
     * <code>time</code> milliseconds.  Refer to <code>RepaintManager</code>
     * for details on how the repaint is handled.
     *
     * @param     time   maximum time in milliseconds before update
     * @param     x    the <i>x</i> coordinate
     * @param     y    the <i>y</i> coordinate
     * @param     width    the width
     * @param     height   the height
     * @see       RepaintManager
     * @since     1.6
     */
    public void repaint(long time, int x, int y, int width, int height) {
        if (RepaintManager.HANDLE_TOP_LEVEL_PAINT) {
            RepaintManager.currentManager(this).addDirtyRegion(
                              this, x, y, width, height);
        }
        else {
            super.repaint(time, x, y, width, height);
        }
    }

    
Returns a string representation of this JWindow.
This method
is intended to be used only for debugging purposes, and the
content and format of the returned string may vary between
implementations. The returned string may be empty but may not
be null.

Returns: a string representation of this JWindow
/**
     * Returns a string representation of this <code>JWindow</code>.
     * This method
     * is intended to be used only for debugging purposes, and the
     * content and format of the returned string may vary between
     * implementations. The returned string may be empty but may not
     * be <code>null</code>.
     *
     * @return  a string representation of this <code>JWindow</code>
     */
    protected String paramString() {
        String rootPaneCheckingEnabledString = (rootPaneCheckingEnabled ?
                                                "true" : "false");

        return super.paramString() +
        ",rootPaneCheckingEnabled=" + rootPaneCheckingEnabledString;
    }


/////////////////
// Accessibility support
////////////////

    
The accessible context property. 
/** The accessible context property. */
    protected AccessibleContext accessibleContext = null;

    
Gets the AccessibleContext associated with this JWindow.
For JWindows, the AccessibleContext takes the form of an
AccessibleJWindow.
A new AccessibleJWindow instance is created if necessary.

Returns:an AccessibleJWindow that serves as the
        AccessibleContext of this JWindow
/**
     * Gets the AccessibleContext associated with this JWindow.
     * For JWindows, the AccessibleContext takes the form of an
     * AccessibleJWindow.
     * A new AccessibleJWindow instance is created if necessary.
     *
     * @return an AccessibleJWindow that serves as the
     *         AccessibleContext of this JWindow
     */
    public AccessibleContext getAccessibleContext() {
        if (accessibleContext == null) {
            accessibleContext = new AccessibleJWindow();
        }
        return accessibleContext;
    }


    
This class implements accessibility support for the
JWindow class.  It provides an implementation of the
Java Accessibility API appropriate to window user-interface
elements.

/**
     * This class implements accessibility support for the
     * <code>JWindow</code> class.  It provides an implementation of the
     * Java Accessibility API appropriate to window user-interface
     * elements.
     */
    @SuppressWarnings("serial")
    protected class AccessibleJWindow extends AccessibleAWTWindow {
        // everything is in the new parent, AccessibleAWTWindow
    }

}