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+/* JDialog.java --
+   Copyright (C) 2002, 2004 Free Software Foundation, Inc.
+
+This file is part of GNU Classpath.
+
+GNU Classpath is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2, or (at your option)
+any later version.
+
+GNU Classpath 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 for more details.
+
+You should have received a copy of the GNU General Public License
+along with GNU Classpath; see the file COPYING.  If not, write to the
+Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+02110-1301 USA.
+
+Linking this library statically or dynamically with other modules is
+making a combined work based on this library.  Thus, the terms and
+conditions of the GNU General Public License cover the whole
+combination.
+
+As a special exception, the copyright holders of this library give you
+permission to link this library with independent modules to produce an
+executable, regardless of the license terms of these independent
+modules, and to copy and distribute the resulting executable under
+terms of your choice, provided that you also meet, for each linked
+independent module, the terms and conditions of the license of that
+module.  An independent module is a module which is not derived from
+or based on this library.  If you modify this library, you may extend
+this exception to your version of the library, but you are not
+obligated to do so.  If you do not wish to do so, delete this
+exception statement from your version. */
+
+
+package javax.swing;
+
+import java.awt.AWTEvent;
+import java.awt.Component;
+import java.awt.Container;
+import java.awt.Dialog;
+import java.awt.Dimension;
+import java.awt.Frame;
+import java.awt.Graphics;
+import java.awt.GraphicsConfiguration;
+import java.awt.IllegalComponentStateException;
+import java.awt.LayoutManager;
+import java.awt.event.WindowEvent;
+
+import javax.accessibility.Accessible;
+import javax.accessibility.AccessibleContext;
+
+/**
+ * A dialog window. This is an extension of {@link java.awt.Dialog} that
+ * provides support for the Swing architecture. Most importantly it contains a
+ * {@link JRootPane} as it's only top-level child, that manages the content
+ * pane, the menu and a glass pane.
+ *
+ * Also, unlike <code>java.awt.Dialog</code>s, JDialogs support the
+ * Swing Pluggable Look &amp; Feel architecture.
+ *
+ * @author Ronald Veldema (rveldema@cs.vu.nl)
+ */
+public class JDialog extends Dialog implements Accessible, WindowConstants,
+                                               RootPaneContainer
+{
+  /**
+   * Provides accessibility support for <code>JDialog</code>s.
+   */
+  protected class AccessibleJDialog extends Dialog.AccessibleAWTDialog
+  {
+    /**
+     * Creates a new instance of <code>AccessibleJDialog</code>.
+     */
+    protected AccessibleJDialog()
+    {
+      super();
+      // Nothing to do here.
+    }
+  }
+
+  private static final long serialVersionUID = -864070866424508218L;
+
+  /** DOCUMENT ME! */
+  protected AccessibleContext accessibleContext;
+
+  /** The single RootPane in the Dialog. */
+  protected JRootPane rootPane;
+
+  /**
+   * Whether checking is enabled on the RootPane.
+   *
+   * @specnote Should be false to comply with J2SE 5.0
+   */
+  protected boolean rootPaneCheckingEnabled = false;
+
+  /** The default action taken when closed. */
+  private int closeAction = HIDE_ON_CLOSE;
+
+  /** Whether JDialogs are decorated by the Look and Feel. */
+  private static boolean decorated;
+
+  /* Creates a new non-modal JDialog with no title
+   * using a shared Frame as the owner.
+   */
+  public JDialog()
+  {
+    this((Frame) SwingUtilities.getOwnerFrame(null), "", false, null);
+  }
+
+  /**
+   * Creates a new non-modal JDialog with no title
+   * using the given owner.
+   *
+   * @param owner The owner of the JDialog.
+   */
+  public JDialog(Dialog owner)
+  {
+    this(owner, "", false, null);
+  }
+
+  /**
+   * Creates a new JDialog with no title using the
+   * given modal setting and owner.
+   *
+   * @param owner The owner of the JDialog.
+   * @param modal Whether the JDialog is modal.
+   */
+  public JDialog(Dialog owner, boolean modal)
+  {
+    this(owner, "", modal, null);
+  }
+
+  /**
+   * Creates a new non-modal JDialog using the
+   * given title and owner.
+   *
+   * @param owner The owner of the JDialog.
+   * @param title The title of the JDialog.
+   */
+  public JDialog(Dialog owner, String title)
+  {
+    this(owner, title, false, null);
+  }
+
+  /**
+   * Creates a new JDialog using the given modal
+   * settings, title, and owner.
+   *
+   * @param owner The owner of the JDialog.
+   * @param title The title of the JDialog.
+   * @param modal Whether the JDialog is modal.
+   */
+  public JDialog(Dialog owner, String title, boolean modal)
+  {
+    this(owner, title, modal, null);
+  }
+
+  /**
+   * Creates a new JDialog using the given modal
+   * settings, title, owner and graphics configuration.
+   *
+   * @param owner The owner of the JDialog.
+   * @param title The title of the JDialog.
+   * @param modal Whether the JDialog is modal.
+   * @param gc The Graphics Configuration to use.
+   */
+  public JDialog(Dialog owner, String title, boolean modal,
+                 GraphicsConfiguration gc)
+  {
+    super(owner, title, modal, gc);
+    dialogInit();
+  }
+
+  /**
+   * Creates a new non-modal JDialog with no title
+   * using the given owner.
+   *
+   * @param owner The owner of the JDialog.
+   */
+  public JDialog(Frame owner)
+  {
+    this(owner, "", false, null);
+  }
+
+  /**
+   * Creates a new JDialog with no title using the
+   * given modal setting and owner.
+   *
+   * @param owner The owner of the JDialog.
+   * @param modal Whether the JDialog is modal.
+   */
+  public JDialog(Frame owner, boolean modal)
+  {
+    this(owner, "", modal, null);
+  }
+
+  /**
+   * Creates a new non-modal JDialog using the
+   * given title and owner.
+   *
+   * @param owner The owner of the JDialog.
+   * @param title The title of the JDialog.
+   */
+  public JDialog(Frame owner, String title)
+  {
+    this(owner, title, false, null);
+  }
+
+  /**
+   * Creates a new JDialog using the given modal
+   * settings, title, and owner.
+   *
+   * @param owner The owner of the JDialog.
+   * @param title The title of the JDialog.
+   * @param modal Whether the JDialog is modal.
+   */
+  public JDialog(Frame owner, String title, boolean modal)
+  {
+    this(owner, title, modal, null);
+  }
+
+  /**
+   * Creates a new JDialog using the given modal
+   * settings, title, owner and graphics configuration.
+   *
+   * @param owner The owner of the JDialog.
+   * @param title The title of the JDialog.
+   * @param modal Whether the JDialog is modal.
+   * @param gc The Graphics Configuration to use.
+   */
+  public JDialog(Frame owner, String title, boolean modal,
+                 GraphicsConfiguration gc)
+  {
+    super((Frame) SwingUtilities.getOwnerFrame(owner), title, modal, gc);
+    dialogInit();
+  }
+
+  /**
+   * This method is called to initialize the
+   * JDialog. It sets the layout used, the locale,
+   * and creates the RootPane.
+   */
+  protected void dialogInit()
+  {
+    // We need to explicitly enable events here so that our processKeyEvent()
+    // and processWindowEvent() gets called.
+    enableEvents(AWTEvent.WINDOW_EVENT_MASK);
+
+    // FIXME: Do a check on GraphicsEnvironment.isHeadless()
+    setLocale(JComponent.getDefaultLocale());
+    getRootPane(); // Will do set/create.
+    invalidate();
+    // Now that initStageDone is true, adds and layouts apply to contentPane,
+    // not top-level.
+    setRootPaneCheckingEnabled(true);
+  }
+
+  /**
+   * This method returns whether JDialogs will have their
+   * window decorations provided by the Look and Feel.
+   *
+   * @return Whether the window decorations are Look and Feel provided.
+   */
+  public static boolean isDefaultLookAndFeelDecorated()
+  {
+    return decorated;
+  }
+
+  /**
+   * This method sets whether JDialogs will have their
+   * window decorations provided by the Look and Feel.
+   *
+   * @param defaultLookAndFeelDecorated Whether the window
+   * decorations are Look and Feel provided.
+   */
+  public static void setDefaultLookAndFeelDecorated(boolean defaultLookAndFeelDecorated)
+  {
+    decorated = defaultLookAndFeelDecorated;
+  }
+
+  /**
+   * This method returns the preferred size of
+   * the JDialog.
+   *
+   * @return The preferred size.
+   */
+  public Dimension getPreferredSize()
+  {
+    Dimension d = super.getPreferredSize();
+    return d;
+  }
+
+  /**
+   * This method returns the JMenuBar used
+   * in this JDialog.
+   *
+   * @return The JMenuBar in the JDialog.
+   */
+  public JMenuBar getJMenuBar()
+  {
+    return getRootPane().getJMenuBar();
+  }
+
+  /**
+   * This method sets the JMenuBar used
+   * in this JDialog.
+   *
+   * @param menubar The JMenuBar to use.
+   */
+  public void setJMenuBar(JMenuBar menubar)
+  {
+    getRootPane().setJMenuBar(menubar);
+  }
+
+  /**
+   * This method sets the LayoutManager used in the JDialog.
+   * This method will throw an Error if rootPaneChecking is
+   * enabled.
+   *
+   * @param manager The LayoutManager to use.
+   */
+  public void setLayout(LayoutManager manager)
+  {
+    // Check if we're in initialization stage. If so, call super.setLayout
+    // otherwise, valid calls go to the content pane.
+    if (isRootPaneCheckingEnabled())
+      getContentPane().setLayout(manager);
+    else
+      super.setLayout(manager);
+  }
+
+  /**
+   * This method sets the JLayeredPane used in the JDialog.
+   * If the given JLayeredPane is null, then this method
+   * will throw an Error.
+   *
+   * @param layeredPane The JLayeredPane to use.
+   */
+  public void setLayeredPane(JLayeredPane layeredPane)
+  {
+    if (layeredPane == null)
+      throw new IllegalComponentStateException("layeredPane cannot be null.");
+    getRootPane().setLayeredPane(layeredPane);
+  }
+
+  /**
+   * This method returns the JLayeredPane used with this JDialog.
+   *
+   * @return The JLayeredPane used with this JDialog.
+   */
+  public JLayeredPane getLayeredPane()
+  {
+    return getRootPane().getLayeredPane();
+  }
+
+  /**
+   * This method returns the JRootPane used with this JDialog.
+   *
+   * @return The JRootPane used with this JDialog.
+   */
+  public JRootPane getRootPane()
+  {
+    if (rootPane == null)
+      setRootPane(createRootPane());
+    return rootPane;
+  }
+
+  /**
+   * This method sets the JRootPane used with this JDialog.
+   *
+   * @param root The JRootPane to use.
+   */
+  protected void setRootPane(JRootPane root)
+  {
+    if (rootPane != null)
+      remove(rootPane);
+
+    rootPane = root;
+    rootPane.show();
+    add(rootPane);
+  }
+
+  /**
+   * This method creates a new JRootPane.
+   *
+   * @return A new JRootPane.
+   */
+  protected JRootPane createRootPane()
+  {
+    return new JRootPane();
+  }
+
+  /**
+   * This method returns the ContentPane
+   * in the JRootPane.
+   *
+   * @return The ContentPane in the JRootPane.
+   */
+  public Container getContentPane()
+  {
+    return getRootPane().getContentPane();
+  }
+
+  /**
+   * This method sets the ContentPane to use with this
+   * JDialog. If the ContentPane given is null, this method
+   * will throw an exception.
+   *
+   * @param contentPane The ContentPane to use with the JDialog.
+   */
+  public void setContentPane(Container contentPane)
+  {
+    if (contentPane == null)
+      throw new IllegalComponentStateException("contentPane cannot be null.");
+    getRootPane().setContentPane(contentPane);
+  }
+
+  /**
+   * This method returns the GlassPane for this JDialog.
+   *
+   * @return The GlassPane for this JDialog.
+   */
+  public Component getGlassPane()
+  {
+    return getRootPane().getGlassPane();
+  }
+
+  /**
+   * This method sets the GlassPane for this JDialog.
+   *
+   * @param glassPane The GlassPane for this JDialog.
+   */
+  public void setGlassPane(Component glassPane)
+  {
+    getRootPane().setGlassPane(glassPane);
+  }
+
+  /**
+   * This method is called when a component is added to the
+   * the JDialog. Calling this method with rootPaneCheckingEnabled
+   * will cause an Error to be thrown.
+   *
+   * @param comp The component to add.
+   * @param constraints The constraints.
+   * @param index The position of the component.
+   */
+  protected void addImpl(Component comp, Object constraints, int index)
+  {
+    // If we're adding in the initialization stage use super.add.
+    // Otherwise pass the add onto the content pane.
+    if (isRootPaneCheckingEnabled())
+      getContentPane().add(comp, constraints, index);
+    else
+      super.addImpl(comp, constraints, index);
+  }
+
+  /**
+   * This method removes a component from the JDialog.
+   *
+   * @param comp The component to remove.
+   */
+  public void remove(Component comp)
+  {
+    // If we're removing the root pane, use super.remove. Otherwise
+    // pass it on to the content pane instead.
+    if (comp == rootPane)
+      super.remove(rootPane);
+    else
+      getContentPane().remove(comp);
+  }
+
+  /**
+   * This method returns whether rootPane checking is enabled.
+   *
+   * @return Whether rootPane checking is enabled.
+   */
+  protected boolean isRootPaneCheckingEnabled()
+  {
+    return rootPaneCheckingEnabled;
+  }
+
+  /**
+   * This method sets whether rootPane checking is enabled.
+   *
+   * @param enabled Whether rootPane checking is enabled.
+   */
+  protected void setRootPaneCheckingEnabled(boolean enabled)
+  {
+    rootPaneCheckingEnabled = enabled;
+  }
+
+  /**
+   * This method simply calls paint and returns.
+   *
+   * @param g The Graphics object to paint with.
+   */
+  public void update(Graphics g)
+  {
+    paint(g);
+  }
+
+
+  /**
+   * This method handles window events. This allows the JDialog
+   * to honour its default close operation.
+   *
+   * @param e The WindowEvent.
+   */
+  protected void processWindowEvent(WindowEvent e)
+  {
+    super.processWindowEvent(e);
+    if (e.getID() == WindowEvent.WINDOW_CLOSING)
+      {
+        switch (closeAction)
+          {
+          case EXIT_ON_CLOSE:
+            System.exit(0);
+            break;
+          case DISPOSE_ON_CLOSE:
+            dispose();
+            break;
+          case HIDE_ON_CLOSE:
+            setVisible(false);
+            break;
+          case DO_NOTHING_ON_CLOSE:
+            break;
+          }
+      }
+  }
+
+  /**
+   * This method sets the action to take
+   * when the JDialog is closed.
+   *
+   * @param operation The action to take.
+   */
+  public void setDefaultCloseOperation(int operation)
+  {
+    /* Reference implementation allows invalid operations
+       to be specified.  If so, getDefaultCloseOperation
+       must return the invalid code, and the behaviour
+       defaults to DO_NOTHING_ON_CLOSE.  processWindowEvent
+       above handles this */
+    closeAction = operation;
+  }
+
+  /**
+   * This method returns the action taken when
+   * the JDialog is closed.
+   *
+   * @return The action to take.
+   */
+  public int getDefaultCloseOperation()
+  {
+    return closeAction;
+  }
+
+  /**
+   * This method returns a String describing the JDialog.
+   *
+   * @return A String describing the JDialog.
+   */
+  protected String paramString()
+  {
+    return "JDialog";
+  }
+
+  /**
+   * DOCUMENT ME!
+   *
+   * @return DOCUMENT ME!
+   */
+  public AccessibleContext getAccessibleContext()
+  {
+    if (accessibleContext == null)
+      accessibleContext = new AccessibleJDialog();
+    return accessibleContext;
+  }
+}