libjava/classpath/gnu/java/awt/peer/gtk/GtkMenuBarPeer.java

   1 /* GtkMenuBarPeer.java -- Implements MenuBarPeer with GTK+
   2    Copyright (C) 1999, 2005, 2006  Free Software Foundation, Inc.
   3
   4 This file is part of GNU Classpath.
   5
   6 GNU Classpath is free software; you can redistribute it and/or modify
   7 it under the terms of the GNU General Public License as published by
   8 the Free Software Foundation; either version 2, or (at your option)
   9 any later version.
  10
  11 GNU Classpath is distributed in the hope that it will be useful, but
  12 WITHOUT ANY WARRANTY; without even the implied warranty of
  13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14 General Public License for more details.
  15
  16 You should have received a copy of the GNU General Public License
  17 along with GNU Classpath; see the file COPYING.  If not, write to the
  18 Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  19 02110-1301 USA.
  20
  21 Linking this library statically or dynamically with other modules is
  22 making a combined work based on this library.  Thus, the terms and
  23 conditions of the GNU General Public License cover the whole
  24 combination.
  25
  26 As a special exception, the copyright holders of this library give you
  27 permission to link this library with independent modules to produce an
  28 executable, regardless of the license terms of these independent
  29 modules, and to copy and distribute the resulting executable under
  30 terms of your choice, provided that you also meet, for each linked
  31 independent module, the terms and conditions of the license of that
  32 module.  An independent module is a module which is not derived from
  33 or based on this library.  If you modify this library, you may extend
  34 this exception to your version of the library, but you are not
  35 obligated to do so.  If you do not wish to do so, delete this
  36 exception statement from your version. */
  37
  38
  39 package gnu.java.awt.peer.gtk;
  40
  41 import java.awt.Font;
  42 import java.awt.Menu;
  43 import java.awt.MenuBar;
  44 import java.awt.MenuComponent;
  45 import java.awt.peer.MenuBarPeer;
  46 import java.awt.peer.MenuPeer;
  47
  48 public class GtkMenuBarPeer extends GtkMenuComponentPeer
  49   implements MenuBarPeer
  50 {
  51   /** Whether we already have an help menu set on this peer. */
  52   private boolean hasHelpMenu;
  53
  54   /**
  55    * Creates the gtk+ widget for this peer and puts it in the nsa
  56    * table. Called from the (super class) constructor.
  57    */
  58   protected native void create();
  59
  60   /**
  61    * Adds a new GtkMenuPeer to the end of the GtkMenuBarPeer.
  62    */
  63   private native void addMenu(GtkMenuPeer menu);
  64
  65   /**
  66    * Creates a new GtkMenuBarPeer associated with the given MenuBar.
  67    */
  68   public GtkMenuBarPeer(MenuBar menubar)
  69   {
  70     super(menubar);
  71   }
  72
  73   /**
  74    * Adds a help menu to this MenuBar. Gnome styleguides say the help
  75    * menu is just the last item in the menubar (they are NOT right
  76    * justified).
  77    */
  78   public void addHelpMenu (Menu menu)
  79   {
  80     if (hasHelpMenu)
  81       {
  82         // Remove the (help) menu, which is after all the other items.
  83         delMenu(((MenuBar) awtWidget).getMenuCount());
  84         hasHelpMenu = false;
  85       }
  86
  87     if (menu != null)
  88       {
  89         addMenu(menu);
  90         hasHelpMenu = true;
  91       }
  92   }
  93
  94   /**
  95    * Deletes the menu at (zero-based) index from this GtkMenuBar.
  96    */
  97   public native void delMenu(int index);
  98
  99   /**
 100    * Adds the GtkMenuPeer associated with the Menu to this
 101    * GtkMenuBarPeer. Makes sure that any help menus keep the last menu
 102    * on the bar.
 103    */
 104   public void addMenu(Menu m)
 105   {
 106     // Make sure the help menu is the last one.
 107     if (hasHelpMenu)
 108       {
 109         addHelpMenu(null);
 110         addMenu((GtkMenuPeer) m.getPeer());
 111         addHelpMenu(((MenuBar) awtWidget).getHelpMenu());
 112       }
 113     else
 114       addMenu((GtkMenuPeer) m.getPeer());
 115   }
 116 }