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/* GtkMenuBarPeer.java -- Implements MenuBarPeer with GTK+

   Copyright (C) 1999, 2005, 2006  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 gnu.java.awt.peer.gtk;

import java.awt.Menu;

import java.awt.MenuBar;

import java.awt.peer.MenuBarPeer;

public class GtkMenuBarPeer extends GtkMenuComponentPeer

  implements MenuBarPeer

{

  /** Whether we already have an help menu set on this peer. */

  private boolean hasHelpMenu;

  /**

   * Creates the gtk+ widget for this peer and puts it in the nsa

   * table. Called from the (super class) constructor.

   */

  protected native void create();

  /**

   * Adds a new GtkMenuPeer to the end of the GtkMenuBarPeer.

   */

  private native void addMenu(GtkMenuPeer menu);

  /**

   * Creates a new GtkMenuBarPeer associated with the given MenuBar.

   */

  public GtkMenuBarPeer(MenuBar menubar)

  {

    super(menubar);

  }

  /**

   * Adds a help menu to this MenuBar. Gnome styleguides say the help

   * menu is just the last item in the menubar (they are NOT right

   * justified).

   */

  public void addHelpMenu (Menu menu)

  {

    if (hasHelpMenu)

      {

        // Remove the (help) menu, which is after all the other items.

        delMenu(((MenuBar) awtWidget).getMenuCount());

        hasHelpMenu = false;

      }

    if (menu != null)

      {

        addMenu(menu);

        hasHelpMenu = true;

      }

  }

  /**

   * Deletes the menu at (zero-based) index from this GtkMenuBar.

   */

  public native void delMenu(int index);

  /**

   * Adds the GtkMenuPeer associated with the Menu to this

   * GtkMenuBarPeer. Makes sure that any help menus keep the last menu

   * on the bar.

   */

  public void addMenu(Menu m)

  {

    // Make sure the help menu is the last one.

    if (hasHelpMenu)

      {

        addHelpMenu(null);

        addMenu((GtkMenuPeer) m.getPeer());

        addHelpMenu(((MenuBar) awtWidget).getHelpMenu());

      }

    else

      addMenu((GtkMenuPeer) m.getPeer());

  }

}