/*
 * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved.
 * ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 */
package javax.swing;

import java.awt.*;
import java.awt.event.*;
import javax.accessibility.*;

/**
 * The main class for creating a dialog window. You can use this class
 * to create a custom dialog, or invoke the many class methods
 * in {@link JOptionPane} to create a variety of standard dialogs.
 * For information about creating dialogs, see
 * <em>The Java Tutorial</em> section
 * <a
 href="https://docs.oracle.com/javase/tutorial/uiswing/components/dialog.html">How
 * to Make Dialogs</a>.
 *
 * <p>
 *
 * The {@code JDialog} component contains a {@code JRootPane}
 * as its only child.
 * The {@code contentPane} should be the parent of any children of the
 * {@code JDialog}.
 * 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 dialog as follows:
 * <pre>
 * dialog.add(child);
 * </pre>
 * And the child will be added to the contentPane.
 * The {@code contentPane} is always non-{@code null}.
 * Attempting to set it to {@code null} generates an exception.
 * The default {@code contentPane} has a {@code BorderLayout}
 * manager set on it.
 * Refer to {@link javax.swing.RootPaneContainer}
 * for details on adding, removing and setting the {@code LayoutManager}
 * of a {@code JDialog}.
 * <p>
 * Please see the {@code JRootPane} documentation for a complete
 * description of the {@code contentPane}, {@code glassPane},
 * and {@code layeredPane} components.
 * <p>
 * In a multi-screen environment, you can create a {@code JDialog}
 * on a different screen device than its owner. See {@link java.awt.Frame} 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} package.
 * Please see {@link java.beans.XMLEncoder}.
 *
 * @see JOptionPane
 * @see JRootPane
 * @see javax.swing.RootPaneContainer
 *
 * @beaninfo
 * attribute: isContainer true
 * attribute: containerDelegate getContentPane
 * description: A toplevel window for creating dialog boxes.
 *
 * @author David Kloba
 * @author James Gosling
 * @author Scott Violet
 */
public class JDialog extends Dialog implements WindowConstants,
 Accessible,
 RootPaneContainer,
 TransferHandler.HasGetTransferHandler
{
 /**
 * Key into the AppContext, used to check if should provide decorations
 * by default.
 */
 private static final Object defaultLookAndFeelDecoratedKey =
 new StringBuffer("JDialog.defaultLookAndFeelDecorated");

 private int defaultCloseOperation = HIDE_ON_CLOSE;

 /**
 * @see #getRootPane
 * @see #setRootPane
 */
 protected JRootPane rootPane;

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

 /**
 * The {@code TransferHandler} for this dialog.
 */
 private TransferHandler transferHandler;

 /**
 * Creates a modeless dialog without a title and without a specified
 * {@code Frame} owner. A shared, hidden frame will be
 * set as the owner of the dialog.
 * <p>
 * This constructor sets the component's locale property to the value
 * returned by {@code JComponent.getDefaultLocale}.
 * <p>
 * NOTE: This constructor does not allow you to create an unowned
 * {@code JDialog}. To create an unowned {@code JDialog}
 * you must use either the {@code JDialog(Window)} or
 * {@code JDialog(Dialog)} constructor with an argument of
 * {@code null}.
 *
 * @throws HeadlessException if {@code GraphicsEnvironment.isHeadless()}
 * returns {@code true}.
 * @see java.awt.GraphicsEnvironment#isHeadless
 * @see JComponent#getDefaultLocale
 */
 public JDialog() {
 this((Frame)null, false);
 }

 /**
 * Creates a modeless dialog with the specified {@code Frame}
 * as its owner and an empty title. If {@code owner}
 * is {@code null}, a shared, hidden frame will be set as the
 * owner of the dialog.
 * <p>
 * This constructor sets the component's locale property to the value
 * returned by {@code JComponent.getDefaultLocale}.
 * <p>
 * NOTE: This constructor does not allow you to create an unowned
 * {@code JDialog}. To create an unowned {@code JDialog}
 * you must use either the {@code JDialog(Window)} or
 * {@code JDialog(Dialog)} constructor with an argument of
 * {@code null}.
 *
 * @param owner the {@code Frame} from which the dialog is displayed
 * @throws HeadlessException if {@code GraphicsEnvironment.isHeadless()}
 * returns {@code true}.
 * @see java.awt.GraphicsEnvironment#isHeadless
 * @see JComponent#getDefaultLocale
 */
 public JDialog(Frame owner) {
 this(owner, false);
 }

 /**
 * Creates a dialog with an empty title and the specified modality and
 * {@code Frame} as its owner. If {@code owner} is {@code null},
 * a shared, hidden frame will be set as the owner of the dialog.
 * <p>
 * This constructor sets the component's locale property to the value
 * returned by {@code JComponent.getDefaultLocale}.
 * <p>
 * NOTE: This constructor does not allow you to create an unowned
 * {@code JDialog}. To create an unowned {@code JDialog}
 * you must use either the {@code JDialog(Window)} or
 * {@code JDialog(Dialog)} constructor with an argument of
 * {@code null}.
 *
 * @param owner the {@code Frame} from which the dialog is displayed
 * @param modal specifies whether dialog blocks user input to other top-level
 * windows when shown. If {@code true}, the modality type property is set to
 * {@code DEFAULT_MODALITY_TYPE}, otherwise the dialog is modeless.
 * @throws HeadlessException if {@code GraphicsEnvironment.isHeadless()}
 * returns {@code true}.
 * @see java.awt.GraphicsEnvironment#isHeadless
 * @see JComponent#getDefaultLocale
 */
 public JDialog(Frame owner, boolean modal) {
 this(owner, "", modal);
 }

 /**
 * Creates a modeless dialog with the specified title and
 * with the specified owner frame. If {@code owner}
 * is {@code null}, a shared, hidden frame will be set as the
 * owner of the dialog.
 * <p>
 * This constructor sets the component's locale property to the value
 * returned by {@code JComponent.getDefaultLocale}.
 * <p>
 * NOTE: This constructor does not allow you to create an unowned
 * {@code JDialog}. To create an unowned {@code JDialog}
 * you must use either the {@code JDialog(Window)} or
 * {@code JDialog(Dialog)} constructor with an argument of
 * {@code null}.
 *
 * @param owner the {@code Frame} from which the dialog is displayed
 * @param title the {@code String} to display in the dialog's
 * title bar
 * @throws HeadlessException if {@code GraphicsEnvironment.isHeadless()}
 * returns {@code true}.
 * @see java.awt.GraphicsEnvironment#isHeadless
 * @see JComponent#getDefaultLocale
 */
 public JDialog(Frame owner, String title) {
 this(owner, title, false);
 }

 /**
 * Creates a dialog with the specified title, owner {@code Frame}
 * and modality. If {@code owner} is {@code null},
 * a shared, hidden frame will be set as the owner of this dialog.
 * <p>
 * This constructor sets the component's locale property to the value
 * returned by {@code JComponent.getDefaultLocale}.
 * <p>
 * NOTE: Any popup components ({@code JComboBox},
 * {@code JPopupMenu}, {@code JMenuBar})
 * created within a modal dialog will be forced to be lightweight.
 * <p>
 * NOTE: This constructor does not allow you to create an unowned
 * {@code JDialog}. To create an unowned {@code JDialog}
 * you must use either the {@code JDialog(Window)} or
 * {@code JDialog(Dialog)} constructor with an argument of
 * {@code null}.
 *
 * @param owner the {@code Frame} from which the dialog is displayed
 * @param title the {@code String} to display in the dialog's
 * title bar
 * @param modal specifies whether dialog blocks user input to other top-level
 * windows when shown. If {@code true}, the modality type property is set to
 * {@code DEFAULT_MODALITY_TYPE} otherwise the dialog is modeless
 * @throws HeadlessException if {@code GraphicsEnvironment.isHeadless()}
 * returns {@code true}.
 *
 * @see java.awt.Dialog.ModalityType
 * @see java.awt.Dialog.ModalityType#MODELESS
 * @see java.awt.Dialog#DEFAULT_MODALITY_TYPE
 * @see java.awt.Dialog#setModal
 * @see java.awt.Dialog#setModalityType
 * @see java.awt.GraphicsEnvironment#isHeadless
 * @see JComponent#getDefaultLocale
 */
 public JDialog(Frame owner, String title, boolean modal) {
 super(owner == null? SwingUtilities.getSharedOwnerFrame() : owner,
 title, modal);
 if (owner == null) {
 WindowListener ownerShutdownListener =
 SwingUtilities.getSharedOwnerFrameShutdownListener();
 addWindowListener(ownerShutdownListener);
 }
 dialogInit();
 }

 /**
 * Creates a dialog with the specified title,
 * owner {@code Frame}, modality and {@code GraphicsConfiguration}.
 * If {@code owner} is {@code null},
 * a shared, hidden frame will be set as the owner of this dialog.
 * <p>
 * This constructor sets the component's locale property to the value
 * returned by {@code JComponent.getDefaultLocale}.
 * <p>
 * NOTE: Any popup components ({@code JComboBox},
 * {@code JPopupMenu}, {@code JMenuBar})
 * created within a modal dialog will be forced to be lightweight.
 * <p>
 * NOTE: This constructor does not allow you to create an unowned
 * {@code JDialog}. To create an unowned {@code JDialog}
 * you must use either the {@code JDialog(Window)} or
 * {@code JDialog(Dialog)} constructor with an argument of
 * {@code null}.
 *
 * @param owner the {@code Frame} from which the dialog is displayed
 * @param title the {@code String} to display in the dialog's
 * title bar
 * @param modal specifies whether dialog blocks user input to other top-level
 * windows when shown. If {@code true}, the modality type property is set to
 * {@code DEFAULT_MODALITY_TYPE}, otherwise the dialog is modeless.
 * @param gc the {@code GraphicsConfiguration} of the target screen device;
 * if {@code null}, the default system {@code GraphicsConfiguration}
 * is assumed
 * @throws HeadlessException if {@code GraphicsEnvironment.isHeadless()}
 * returns {@code true}.
 * @see java.awt.Dialog.ModalityType
 * @see java.awt.Dialog.ModalityType#MODELESS
 * @see java.awt.Dialog#DEFAULT_MODALITY_TYPE
 * @see java.awt.Dialog#setModal
 * @see java.awt.Dialog#setModalityType
 * @see java.awt.GraphicsEnvironment#isHeadless
 * @see JComponent#getDefaultLocale
 * @since 1.4
 */
 public JDialog(Frame owner, String title, boolean modal,
 GraphicsConfiguration gc) {
 super(owner == null? SwingUtilities.getSharedOwnerFrame() : owner,
 title, modal, gc);
 if (owner == null) {
 WindowListener ownerShutdownListener =
 SwingUtilities.getSharedOwnerFrameShutdownListener();
 addWindowListener(ownerShutdownListener);
 }
 dialogInit();
 }

 /**
 * Creates a modeless dialog with the specified {@code Dialog}
 * as its owner and an empty title.
 * <p>
 * This constructor sets the component's locale property to the value
 * returned by {@code JComponent.getDefaultLocale}.
 *
 * @param owner the owner {@code Dialog} from which the dialog is displayed
 * or {@code null} if this dialog has no owner
 * @throws HeadlessException {@code if GraphicsEnvironment.isHeadless()}
 * returns {@code true}.
 * @see java.awt.GraphicsEnvironment#isHeadless
 * @see JComponent#getDefaultLocale
 */
 public JDialog(Dialog owner) {
 this(owner, false);
 }

 /**
 * Creates a dialog with an empty title and the specified modality and
 * {@code Dialog} as its owner.
 * <p>
 * This constructor sets the component's locale property to the value
 * returned by {@code JComponent.getDefaultLocale}.
 *
 * @param owner the owner {@code Dialog} from which the dialog is displayed
 * or {@code null} if this dialog has no owner
 * @param modal specifies whether dialog blocks user input to other top-level
 * windows when shown. If {@code true}, the modality type property is set to
 * {@code DEFAULT_MODALITY_TYPE}, otherwise the dialog is modeless.
 * @throws HeadlessException if {@code GraphicsEnvironment.isHeadless()}
 * returns {@code true}.
 * @see java.awt.Dialog.ModalityType
 * @see java.awt.Dialog.ModalityType#MODELESS
 * @see java.awt.Dialog#DEFAULT_MODALITY_TYPE
 * @see java.awt.Dialog#setModal
 * @see java.awt.Dialog#setModalityType
 * @see java.awt.GraphicsEnvironment#isHeadless
 * @see JComponent#getDefaultLocale
 */
 public JDialog(Dialog owner, boolean modal) {
 this(owner, "", modal);
 }

 /**
 * Creates a modeless dialog with the specified title and
 * with the specified owner dialog.
 * <p>
 * This constructor sets the component's locale property to the value
 * returned by {@code JComponent.getDefaultLocale}.
 *
 * @param owner the owner {@code Dialog} from which the dialog is displayed
 * or {@code null} if this dialog has no owner
 * @param title the {@code String} to display in the dialog's
 * title bar
 * @throws HeadlessException if {@code GraphicsEnvironment.isHeadless()}
 * returns {@code true}.
 * @see java.awt.GraphicsEnvironment#isHeadless
 * @see JComponent#getDefaultLocale
 */
 public JDialog(Dialog owner, String title) {
 this(owner, title, false);
 }

 /**
 * Creates a dialog with the specified title, modality
 * and the specified owner {@code Dialog}.
 * <p>
 * This constructor sets the component's locale property to the value
 * returned by {@code JComponent.getDefaultLocale}.
 *
 * @param owner the owner {@code Dialog} from which the dialog is displayed
 * or {@code null} if this dialog has no owner
 * @param title the {@code String} to display in the dialog's
 * title bar
 * @param modal specifies whether dialog blocks user input to other top-level
 * windows when shown. If {@code true}, the modality type property is set to
 * {@code DEFAULT_MODALITY_TYPE}, otherwise the dialog is modeless
 * @throws HeadlessException if {@code GraphicsEnvironment.isHeadless()}
 * returns {@code true}.
 * @see java.awt.Dialog.ModalityType
 * @see java.awt.Dialog.ModalityType#MODELESS
 * @see java.awt.Dialog#DEFAULT_MODALITY_TYPE
 * @see java.awt.Dialog#setModal
 * @see java.awt.Dialog#setModalityType
 * @see java.awt.GraphicsEnvironment#isHeadless
 * @see JComponent#getDefaultLocale
 */
 public JDialog(Dialog owner, String title, boolean modal) {
 super(owner, title, modal);
 dialogInit();
 }

 /**
 * Creates a dialog with the specified title, owner {@code Dialog},
 * modality and {@code GraphicsConfiguration}.
 *
 * <p>
 * NOTE: Any popup components ({@code JComboBox},
 * {@code JPopupMenu}, {@code JMenuBar})
 * created within a modal dialog will be forced to be lightweight.
 * <p>
 * This constructor sets the component's locale property to the value
 * returned by {@code JComponent.getDefaultLocale}.
 *
 * @param owner the owner {@code Dialog} from which the dialog is displayed
 * or {@code null} if this dialog has no owner
 * @param title the {@code String} to display in the dialog's
 * title bar
 * @param modal specifies whether dialog blocks user input to other top-level
 * windows when shown. If {@code true}, the modality type property is set to
 * {@code DEFAULT_MODALITY_TYPE}, otherwise the dialog is modeless
 * @param gc the {@code GraphicsConfiguration} of the target screen device;
 * if {@code null}, the default system {@code GraphicsConfiguration}
 * is assumed
 * @throws HeadlessException if {@code GraphicsEnvironment.isHeadless()}
 * returns {@code true}.
 * @see java.awt.Dialog.ModalityType
 * @see java.awt.Dialog.ModalityType#MODELESS
 * @see java.awt.Dialog#DEFAULT_MODALITY_TYPE
 * @see java.awt.Dialog#setModal
 * @see java.awt.Dialog#setModalityType
 * @see java.awt.GraphicsEnvironment#isHeadless
 * @see JComponent#getDefaultLocale
 * @since 1.4
 */
 public JDialog(Dialog owner, String title, boolean modal,
 GraphicsConfiguration gc) {
 super(owner, title, modal, gc);
 dialogInit();
 }

 /**
 * Creates a modeless dialog with the specified {@code Window}
 * as its owner and an empty title.
 * <p>
 * This constructor sets the component's locale property to the value
 * returned by {@code JComponent.getDefaultLocale}.
 *
 * @param owner the {@code Window} from which the dialog is displayed or
 * {@code null} if this dialog has no owner
 *
 * @throws IllegalArgumentException
 * if the {@code owner} is not an instance of {@link java.awt.Dialog Dialog}
 * or {@link java.awt.Frame Frame}
 * @throws IllegalArgumentException
 * if the {@code owner}'s {@code GraphicsConfiguration} is not from a screen device
 * @throws HeadlessException
 * when {@code GraphicsEnvironment.isHeadless()} returns {@code true}
 *
 * @see java.awt.GraphicsEnvironment#isHeadless
 * @see JComponent#getDefaultLocale
 *
 * @since 1.6
 */
 public JDialog(Window owner) {
 this(owner, Dialog.ModalityType.MODELESS);
 }

 /**
 * Creates a dialog with an empty title and the specified modality and
 * {@code Window} as its owner.
 * <p>
 * This constructor sets the component's locale property to the value
 * returned by {@code JComponent.getDefaultLocale}.
 *
 * @param owner the {@code Window} from which the dialog is displayed or
 * {@code null} if this dialog has no owner
 * @param modalityType specifies whether dialog blocks input to other
 * windows when shown. {@code null} value and unsupported modality
 * types are equivalent to {@code MODELESS}
 *
 * @throws IllegalArgumentException
 * if the {@code owner} is not an instance of {@link java.awt.Dialog Dialog}
 * or {@link java.awt.Frame Frame}
 * @throws IllegalArgumentException
 * if the {@code owner}'s {@code GraphicsConfiguration} is not from a screen device
 * @throws HeadlessException
 * when {@code GraphicsEnvironment.isHeadless()} returns {@code true}
 * @throws SecurityException
 * if the calling thread does not have permission to create modal dialogs
 * with the given {@code modalityType}
 *
 * @see java.awt.Dialog.ModalityType
 * @see java.awt.Dialog#setModal
 * @see java.awt.Dialog#setModalityType
 * @see java.awt.GraphicsEnvironment#isHeadless
 * @see JComponent#getDefaultLocale
 *
 * @since 1.6
 */
 public JDialog(Window owner, ModalityType modalityType) {
 this(owner, "", modalityType);
 }

 /**
 * Creates a modeless dialog with the specified title and owner
 * {@code Window}.
 * <p>
 * This constructor sets the component's locale property to the value
 * returned by {@code JComponent.getDefaultLocale}.
 *
 * @param owner the {@code Window} from which the dialog is displayed or
 * {@code null} if this dialog has no owner
 * @param title the {@code String} to display in the dialog's
 * title bar or {@code null} if the dialog has no title
 *
 * @throws IllegalArgumentException
 * if the {@code owner} is not an instance of {@link java.awt.Dialog Dialog}
 * or {@link java.awt.Frame Frame}
 * @throws IllegalArgumentException
 * if the {@code owner}'s {@code GraphicsConfiguration} is not from a screen device
 * @throws HeadlessException
 * when {@code GraphicsEnvironment.isHeadless()} returns {@code true}
 *
 * @see java.awt.GraphicsEnvironment#isHeadless
 * @see JComponent#getDefaultLocale
 *
 * @since 1.6
 */
 public JDialog(Window owner, String title) {
 this(owner, title, Dialog.ModalityType.MODELESS);
 }

 /**
 * Creates a dialog with the specified title, owner {@code Window} and
 * modality.
 * <p>
 * This constructor sets the component's locale property to the value
 * returned by {@code JComponent.getDefaultLocale}.
 *
 * @param owner the {@code Window} from which the dialog is displayed or
 * {@code null} if this dialog has no owner
 * @param title the {@code String} to display in the dialog's
 * title bar or {@code null} if the dialog has no title
 * @param modalityType specifies whether dialog blocks input to other
 * windows when shown. {@code null} value and unsupported modality
 * types are equivalent to {@code MODELESS}
 *
 * @throws IllegalArgumentException
 * if the {@code owner} is not an instance of {@link java.awt.Dialog Dialog}
 * or {@link java.awt.Frame Frame}
 * @throws IllegalArgumentException
 * if the {@code owner}'s {@code GraphicsConfiguration} is not from a screen device
 * @throws HeadlessException
 * when {@code GraphicsEnvironment.isHeadless()} returns {@code true}
 * @throws SecurityException
 * if the calling thread does not have permission to create modal dialogs
 * with the given {@code modalityType}
 *
 * @see java.awt.Dialog.ModalityType
 * @see java.awt.Dialog#setModal
 * @see java.awt.Dialog#setModalityType
 * @see java.awt.GraphicsEnvironment#isHeadless
 * @see JComponent#getDefaultLocale
 *
 * @since 1.6
 */
 public JDialog(Window owner, String title, Dialog.ModalityType modalityType) {
 super(owner, title, modalityType);
 dialogInit();
 }

 /**
 * Creates a dialog with the specified title, owner {@code Window},
 * modality and {@code GraphicsConfiguration}.
 * <p>
 * NOTE: Any popup components ({@code JComboBox},
 * {@code JPopupMenu}, {@code JMenuBar})
 * created within a modal dialog will be forced to be lightweight.
 * <p>
 * This constructor sets the component's locale property to the value
 * returned by {@code JComponent.getDefaultLocale}.
 *
 * @param owner the {@code Window} from which the dialog is displayed or
 * {@code null} if this dialog has no owner
 * @param title the {@code String} to display in the dialog's
 * title bar or {@code null} if the dialog has no title
 * @param modalityType specifies whether dialog blocks input to other
 * windows when shown. {@code null} value and unsupported modality
 * types are equivalent to {@code MODELESS}
 * @param gc the {@code GraphicsConfiguration} of the target screen device;
 * if {@code null}, the default system {@code GraphicsConfiguration}
 * is assumed
 * @throws IllegalArgumentException
 * if the {@code owner} is not an instance of {@link java.awt.Dialog Dialog}
 * or {@link java.awt.Frame Frame}
 * @throws IllegalArgumentException
 * if the {@code owner}'s {@code GraphicsConfiguration} is not from a screen device
 * @throws HeadlessException
 * when {@code GraphicsEnvironment.isHeadless()} returns {@code true}
 * @throws SecurityException
 * if the calling thread does not have permission to create modal dialogs
 * with the given {@code modalityType}
 *
 * @see java.awt.Dialog.ModalityType
 * @see java.awt.Dialog#setModal
 * @see java.awt.Dialog#setModalityType
 * @see java.awt.GraphicsEnvironment#isHeadless
 * @see JComponent#getDefaultLocale
 *
 * @since 1.6
 */
 public JDialog(Window owner, String title, Dialog.ModalityType modalityType,
 GraphicsConfiguration gc) {
 super(owner, title, modalityType, gc);
 dialogInit();
 }

 /**
 * Called by the constructors to init the {@code JDialog} properly.
 */
 protected void dialogInit() {
 enableEvents(AWTEvent.KEY_EVENT_MASK | AWTEvent.WINDOW_EVENT_MASK);
 setLocale( JComponent.getDefaultLocale() );
 setRootPane(createRootPane());
 setBackground(UIManager.getColor("control"));
 setRootPaneCheckingEnabled(true);
 if (JDialog.isDefaultLookAndFeelDecorated()) {
 boolean supportsWindowDecorations =
 UIManager.getLookAndFeel().getSupportsWindowDecorations();
 if (supportsWindowDecorations) {
 setUndecorated(true);
 getRootPane().setWindowDecorationStyle(JRootPane.PLAIN_DIALOG);
 }
 }
 sun.awt.SunToolkit.checkAndSetPolicy(this);
 }

 /**
 * Called by the constructor methods to create the default
 * {@code rootPane}.
 */
 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;
 }

 /**
 * Handles window events depending on the state of the
 * {@code defaultCloseOperation} property.
 *
 * @see #setDefaultCloseOperation
 */
 protected void processWindowEvent(WindowEvent e) {
 super.processWindowEvent(e);

 if (e.getID() == WindowEvent.WINDOW_CLOSING) {
 switch(defaultCloseOperation) {
 case HIDE_ON_CLOSE:
 setVisible(false);
 break;
 case DISPOSE_ON_CLOSE:
 dispose();
 break;
 case DO_NOTHING_ON_CLOSE:
 default:
 break;
 }
 }
 }


 /**
 * Sets the operation that will happen by default when
 * the user initiates a "close" on this dialog.
 * You must specify one of the following choices:
 * <br><br>
 * <ul>
 * <li>{@code DO_NOTHING_ON_CLOSE}
 * (defined in {@code WindowConstants}):
 * Don't do anything; require the
 * program to handle the operation in the {@code windowClosing}
 * method of a registered {@code WindowListener} object.
 *
 * <li>{@code HIDE_ON_CLOSE}
 * (defined in {@code WindowConstants}):
 * Automatically hide the dialog after
 * invoking any registered {@code WindowListener}
 * objects.
 *
 * <li>{@code DISPOSE_ON_CLOSE}
 * (defined in {@code WindowConstants}):
 * Automatically hide and dispose the
 * dialog after invoking any registered {@code WindowListener}
 * objects.
 * </ul>
 * <p>
 * The value is set to {@code HIDE_ON_CLOSE} by default. Changes
 * to the value of this property cause the firing of a property
 * change event, with property name "defaultCloseOperation".
 * <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="../../java/awt/doc-files/AWTThreadIssues.html">
 * AWT Threading Issues</a> for more information.
 *
 * @param operation the operation which should be performed when the
 * user closes the dialog
 * @throws IllegalArgumentException if defaultCloseOperation value
 * isn't one of the above valid values
 * @see #addWindowListener
 * @see #getDefaultCloseOperation
 * @see WindowConstants
 *
 * @beaninfo
 * preferred: true
 * bound: true
 * enum: DO_NOTHING_ON_CLOSE WindowConstants.DO_NOTHING_ON_CLOSE
 * HIDE_ON_CLOSE WindowConstants.HIDE_ON_CLOSE
 * DISPOSE_ON_CLOSE WindowConstants.DISPOSE_ON_CLOSE
 * description: The dialog's default close operation.
 */
 public void setDefaultCloseOperation(int operation) {
 if (operation != DO_NOTHING_ON_CLOSE &&
 operation != HIDE_ON_CLOSE &&
 operation != DISPOSE_ON_CLOSE) {
 throw new IllegalArgumentException("defaultCloseOperation must be one of: DO_NOTHING_ON_CLOSE, HIDE_ON_CLOSE, or DISPOSE_ON_CLOSE");
 }

 int oldValue = this.defaultCloseOperation;
 this.defaultCloseOperation = operation;
 firePropertyChange("defaultCloseOperation", oldValue, operation);
 }

 /**
 * Returns the operation which occurs when the user
 * initiates a "close" on this dialog.
 *
 * @return an integer indicating the window-close operation
 * @see #setDefaultCloseOperation
 */
 public int getDefaultCloseOperation() {
 return defaultCloseOperation;
 }

 /**
 * 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 JDialog}, {@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 {@code transferHandler} property.
 *
 * @return the value of the {@code transferHandler} property
 *
 * @see TransferHandler
 * @see #setTransferHandler
 * @since 1.6
 */
 public TransferHandler getTransferHandler() {
 return transferHandler;
 }

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

 /**
 * Sets the menubar for this dialog.
 *
 * @param menu the menubar being placed in the dialog
 *
 * @see #getJMenuBar
 *
 * @beaninfo
 * hidden: true
 * description: The menubar for accessing pulldown menus from this dialog.
 */
 public void setJMenuBar(JMenuBar menu) {
 getRootPane().setMenuBar(menu);
 }

 /**
 * Returns the menubar set on this dialog.
 *
 * @see #setJMenuBar
 */
 public JMenuBar getJMenuBar() {
 return getRootPane().getMenuBar();
 }


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


 /**
 * Sets whether calls to {@code add} and
 * {@code setLayout} are forwarded to the {@code contentPane}.
 *
 * @param enabled true if {@code add} and {@code setLayout}
 * are forwarded, false if they should operate directly on the
 * {@code JDialog}.
 *
 * @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 {@code Component}.
 * This method is overridden to conditionally forward calls to the
 * {@code contentPane}.
 * By default, children are added to the {@code contentPane} 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
 * @throws IllegalArgumentException if {@code index} is invalid
 * @throws IllegalArgumentException if adding the container's parent
 * to itself
 * @throws 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
 * {@code comp} is not the {@code rootPane}, this will forward
 * the call to the {@code contentPane}. This will do nothing if
 * {@code comp} is not a child of the {@code JDialog} or
 * {@code contentPane}.
 *
 * @param comp the component to be removed
 * @throws NullPointerException if {@code comp} 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 {@code LayoutManager}.
 * Overridden to conditionally forward the call to the
 * {@code contentPane}.
 * Refer to {@link javax.swing.RootPaneContainer} for
 * more information.
 *
 * @param manager the {@code LayoutManager}
 * @see #setRootPaneCheckingEnabled
 * @see javax.swing.RootPaneContainer
 */
 public void setLayout(LayoutManager manager) {
 if(isRootPaneCheckingEnabled()) {
 getContentPane().setLayout(manager);
 }
 else {
 super.setLayout(manager);
 }
 }


 /**
 * Returns the {@code rootPane} object for this dialog.
 *
 * @see #setRootPane
 * @see RootPaneContainer#getRootPane
 */
 public JRootPane getRootPane() {
 return rootPane;
 }


 /**
 * Sets the {@code rootPane} property.
 * This method is called by the constructor.
 *
 * @param root the {@code rootPane} object for this dialog
 *
 * @see #getRootPane
 *
 * @beaninfo
 * hidden: true
 * description: the RootPane object for this dialog.
 */
 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 {@code contentPane} object for this dialog.
 *
 * @return the {@code contentPane} property
 *
 * @see #setContentPane
 * @see RootPaneContainer#getContentPane
 */
 public Container getContentPane() {
 return getRootPane().getContentPane();
 }


 /**
 * Sets the {@code contentPane} property.
 * This method is called by the constructor.
 * <p>
 * Swing's painting architecture requires an opaque {@code JComponent}
 * in the containment hierarchy. This is typically provided by the
 * content pane. If you replace the content pane it is recommended you
 * replace it with an opaque {@code JComponent}.
 * @see JRootPane
 *
 * @param contentPane the {@code contentPane} object for this dialog
 *
 * @throws java.awt.IllegalComponentStateException (a runtime
 * exception) if the content pane parameter is {@code null}
 * @see #getContentPane
 * @see RootPaneContainer#setContentPane
 *
 * @beaninfo
 * hidden: true
 * description: The client area of the dialog where child
 * components are normally inserted.
 */
 public void setContentPane(Container contentPane) {
 getRootPane().setContentPane(contentPane);
 }

 /**
 * Returns the {@code layeredPane} object for this dialog.
 *
 * @return the {@code layeredPane} property
 *
 * @see #setLayeredPane
 * @see RootPaneContainer#getLayeredPane
 */
 public JLayeredPane getLayeredPane() {
 return getRootPane().getLayeredPane();
 }

 /**
 * Sets the {@code layeredPane} property.
 * This method is called by the constructor.
 *
 * @param layeredPane the new {@code layeredPane} property
 *
 * @throws java.awt.IllegalComponentStateException (a runtime
 * exception) if the layered pane parameter is null
 * @see #getLayeredPane
 * @see RootPaneContainer#setLayeredPane
 *
 * @beaninfo
 * hidden: true
 * description: The pane which holds the various dialog layers.
 */
 public void setLayeredPane(JLayeredPane layeredPane) {
 getRootPane().setLayeredPane(layeredPane);
 }

 /**
 * Returns the {@code glassPane} object for this dialog.
 *
 * @return the {@code glassPane} property
 *
 * @see #setGlassPane
 * @see RootPaneContainer#getGlassPane
 */
 public Component getGlassPane() {
 return getRootPane().getGlassPane();
 }

 /**
 * Sets the {@code glassPane} property.
 * This method is called by the constructor.
 *
 * @param glassPane the {@code glassPane} object for this dialog
 * @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
 */
 public Graphics getGraphics() {
 JComponent.getGraphicsInvoked(this);
 return super.getGraphics();
 }

 /**
 * Repaints the specified rectangle of this component within
 * {@code time} milliseconds. Refer to {@code RepaintManager}
 * 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);
 }
 }

 /**
 * Provides a hint as to whether or not newly created {@code JDialog}s
 * should have their Window decorations (such as borders, widgets to
 * close the window, title...) provided by the current look
 * and feel. If {@code defaultLookAndFeelDecorated} is true,
 * the current {@code LookAndFeel} supports providing window
 * decorations, and the current window manager supports undecorated
 * windows, then newly created {@code JDialog}s will have their
 * Window decorations provided by the current {@code LookAndFeel}.
 * Otherwise, newly created {@code JDialog}s will have their
 * Window decorations provided by the current window manager.
 * <p>
 * You can get the same effect on a single JDialog by doing the following:
 * <pre>
 * JDialog dialog = new JDialog();
 * dialog.setUndecorated(true);
 * dialog.getRootPane().setWindowDecorationStyle(JRootPane.PLAIN_DIALOG);
 * </pre>
 *
 * @param defaultLookAndFeelDecorated A hint as to whether or not current
 * look and feel should provide window decorations
 * @see javax.swing.LookAndFeel#getSupportsWindowDecorations
 * @since 1.4
 */
 public static void setDefaultLookAndFeelDecorated(boolean defaultLookAndFeelDecorated) {
 if (defaultLookAndFeelDecorated) {
 SwingUtilities.appContextPut(defaultLookAndFeelDecoratedKey, Boolean.TRUE);
 } else {
 SwingUtilities.appContextPut(defaultLookAndFeelDecoratedKey, Boolean.FALSE);
 }
 }

 /**
 * Returns true if newly created {@code JDialog}s should have their
 * Window decorations provided by the current look and feel. This is only
 * a hint, as certain look and feels may not support this feature.
 *
 * @return true if look and feel should provide Window decorations.
 * @since 1.4
 */
 public static boolean isDefaultLookAndFeelDecorated() {
 Boolean defaultLookAndFeelDecorated =
 (Boolean) SwingUtilities.appContextGet(defaultLookAndFeelDecoratedKey);
 if (defaultLookAndFeelDecorated == null) {
 defaultLookAndFeelDecorated = Boolean.FALSE;
 }
 return defaultLookAndFeelDecorated.booleanValue();
 }

 /**
 * Returns a string representation of this {@code JDialog}.
 * 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}.
 *
 * @return a string representation of this {@code JDialog}.
 */
 protected String paramString() {
 String defaultCloseOperationString;
 if (defaultCloseOperation == HIDE_ON_CLOSE) {
 defaultCloseOperationString = "HIDE_ON_CLOSE";
 } else if (defaultCloseOperation == DISPOSE_ON_CLOSE) {
 defaultCloseOperationString = "DISPOSE_ON_CLOSE";
 } else if (defaultCloseOperation == DO_NOTHING_ON_CLOSE) {
 defaultCloseOperationString = "DO_NOTHING_ON_CLOSE";
 } else defaultCloseOperationString = "";
 String rootPaneString = (rootPane != null ?
 rootPane.toString() : "");
 String rootPaneCheckingEnabledString = (rootPaneCheckingEnabled ?
 "true" : "false");

 return super.paramString() +
 ",defaultCloseOperation=" + defaultCloseOperationString +
 ",rootPane=" + rootPaneString +
 ",rootPaneCheckingEnabled=" + rootPaneCheckingEnabledString;
 }


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

 protected AccessibleContext accessibleContext = null;

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

 /**
 * This class implements accessibility support for the
 * {@code JDialog} class. It provides an implementation of the
 * Java Accessibility API appropriate to dialog user-interface
 * elements.
 */
 protected class AccessibleJDialog extends AccessibleAWTDialog {

 // AccessibleContext methods
 //
 /**
 * Get the accessible name of this object.
 *
 * @return the localized name of the object -- can be null if this
 * object does not have a name
 */
 public String getAccessibleName() {
 if (accessibleName != null) {
 return accessibleName;
 } else {
 if (getTitle() == null) {
 return super.getAccessibleName();
 } else {
 return getTitle();
 }
 }
 }

 /**
 * Get the state of this object.
 *
 * @return an instance of AccessibleStateSet containing the current
 * state set of the object
 * @see AccessibleState
 */
 public AccessibleStateSet getAccessibleStateSet() {
 AccessibleStateSet states = super.getAccessibleStateSet();

 if (isResizable()) {
 states.add(AccessibleState.RESIZABLE);
 }
 if (getFocusOwner() != null) {
 states.add(AccessibleState.ACTIVE);
 }
 if (isModal()) {
 states.add(AccessibleState.MODAL);
 }
 return states;
 }

 } // inner class AccessibleJDialog
}