Source for gnu.java.awt.peer.gtk.GtkMenuItemPeer

   1: /* GtkMenuItemPeer.java -- Implements MenuItemPeer 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.MenuItem;
  42: import java.awt.peer.MenuItemPeer;
  43: 
  44: public class GtkMenuItemPeer extends GtkMenuComponentPeer
  45:   implements MenuItemPeer
  46: {
  47:   /**
  48:    * Creates the associated gtk+ widget and stores it in the nsa table
  49:    * for this peer. Called by the create() method with the label name
  50:    * of the associated MenuItem. Needs to be overridden my subclasses
  51:    * that want to create a different gtk+ widget.
  52:    */
  53:   protected native void create (String label);
  54: 
  55:   /**
  56:    * Called from constructor to enable signals from an item. If a
  57:    * subclass needs different (or no) signals connected this method
  58:    * should be overridden.
  59:    */
  60:   protected native void connectSignals ();
  61: 
  62:   /**
  63:    * Overridden to set font on menu item label.
  64:    */
  65:   protected native void gtkWidgetModifyFont(String name, int style, int size);
  66: 
  67:   /**
  68:    * Creates the associated gtk+ widget and stores it in the nsa table
  69:    * for this peer. Called by the (super class) constructor.
  70:    * Overridden to get the label if the assiociated MenuItem and to
  71:    * call create(String).
  72:    */
  73:   protected void create()
  74:   {
  75:     create (((MenuItem) awtWidget).getLabel());
  76:   }
  77: 
  78:   /**
  79:    * Creates a new GtkMenuItemPeer associated with the given MenuItem.
  80:    * It will call create(), setFont(), setEnabled() and
  81:    * connectSignals() in that order.
  82:    */
  83:   public GtkMenuItemPeer(MenuItem item)
  84:   {
  85:     super(item);
  86:     setEnabled (item.isEnabled());
  87:     connectSignals();
  88:   }
  89: 
  90:   /**
  91:    * Calls setEnabled(false).
  92:    */
  93:   public void disable()
  94:   {
  95:     setEnabled(false);
  96:   }
  97: 
  98:   /**
  99:    * Calls setEnabled(true).
 100:    */
 101:   public void enable()
 102:   {
 103:     setEnabled(true);
 104:   }
 105: 
 106:   public native void setEnabled(boolean b);
 107:   public native void setLabel(String label);
 108: 
 109:   /**
 110:    * Callback setup through connectSignals().
 111:    */
 112:   protected void postMenuActionEvent ()
 113:   {
 114:     postActionEvent (((MenuItem)awtWidget).getActionCommand (), 0);
 115:   }
 116: }