Source for gnu.java.awt.peer.swing.SwingMenuItemPeer

   1: /* SwingMenuItemPeer.java -- A Swing based peer for AWT menu items
   2:    Copyright (C)  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: package gnu.java.awt.peer.swing;
  39: 
  40: import java.awt.Font;
  41: import java.awt.MenuItem;
  42: import java.awt.Toolkit;
  43: import java.awt.event.ActionEvent;
  44: import java.awt.event.ActionListener;
  45: import java.awt.peer.MenuItemPeer;
  46: 
  47: import javax.swing.JMenuItem;
  48: 
  49: /**
  50:  * A Swing based peer for the AWT MenuItem.
  51:  *
  52:  * @author Roman Kennke (kennke@aicas.com)
  53:  */
  54: public class SwingMenuItemPeer
  55:   implements MenuItemPeer
  56: {
  57:   /**
  58:    * The AWT menu item.
  59:    */
  60:   MenuItem awtMenuItem;
  61: 
  62:   /**
  63:    * The Swing menu item.
  64:    */
  65:   JMenuItem menuItem;
  66: 
  67:   /**
  68:    * Receives ActionEvents from the Swing menu item and forwards them
  69:    * to the ActionListeners of the AWT MenuItem.
  70:    *
  71:    * @author Roman Kennke (kennke@aicas.com)
  72:    */
  73:   private class SwingMenuItemListener implements ActionListener
  74:   {
  75: 
  76:     /**
  77:      * Receives notification when the action has been performed.
  78:      *
  79:      * @param event the action event
  80:      */
  81:     public void actionPerformed(ActionEvent event)
  82:     {
  83:       event.setSource(awtMenuItem);
  84:       Toolkit.getDefaultToolkit().getSystemEventQueue().postEvent(event);
  85:     }
  86: 
  87:   }
  88: 
  89:   /**
  90:    * Creates a new instance of <code>SwingMenuItemPeer</code>.
  91:    *
  92:    * @param awtMenuItem the AWT menu item
  93:    */
  94:   public SwingMenuItemPeer(MenuItem awtMenuItem)
  95:   {
  96:     this.awtMenuItem = awtMenuItem;
  97:     menuItem = new JMenuItem(awtMenuItem.getLabel());
  98:     menuItem.addActionListener(new SwingMenuItemListener());
  99:   }
 100: 
 101:   /**
 102:    * Disables the menu item.
 103:    */
 104:   public void disable()
 105:   {
 106:     menuItem.setEnabled(false);
 107:   }
 108: 
 109:   /**
 110:    * Enables the menu item.
 111:    */
 112:   public void enable()
 113:   {
 114:     menuItem.setEnabled(true);
 115:   }
 116: 
 117:   /**
 118:    * Sets the enabled state to <code>enabled</code>.
 119:    *
 120:    * @param enabled if the menu item should be enabled or not
 121:    */
 122:   public void setEnabled(boolean enabled)
 123:   {
 124:     menuItem.setEnabled(enabled);
 125:   }
 126: 
 127:   /**
 128:    * Sets the label for the menu item.
 129:    *
 130:    * @param text the label to set
 131:    */
 132:   public void setLabel(String text)
 133:   {
 134:     menuItem.setText(text);
 135:   }
 136: 
 137:   /**
 138:    * Disposes the menu item. This releases any reference to the Swing and AWT
 139:    * menu item.
 140:    */
 141:   public void dispose()
 142:   {
 143:     menuItem = null;
 144:     awtMenuItem = null;
 145:   }
 146: 
 147:   /**
 148:    * Sets the font for this menu item.
 149:    *
 150:    * @param font the font to set
 151:    */
 152:   public void setFont(Font font)
 153:   {
 154:     menuItem.setFont(font);
 155:   }
 156: 
 157: }