1 /*
   2  * Copyright (c) 1997, 2004, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 package com.sun.java.swing.plaf.motif;
  26 
  27 import java.awt.*;
  28 import java.awt.event.*;
  29 import javax.swing.*;
  30 import javax.swing.event.*;
  31 import javax.swing.plaf.*;
  32 import javax.swing.border.*;
  33 import javax.swing.plaf.basic.*;
  34 
  35 
  36 import javax.swing.plaf.basic.BasicMenuUI;
  37 
  38 /**
  39  * A Motif {@literal L&F} implementation of MenuUI.
  40  *
  41  * @author Georges Saab
  42  * @author Rich Schiavi
  43  */
  44 public class MotifMenuUI extends BasicMenuUI
  45 {
  46 
  47     public static ComponentUI createUI( JComponent x ) {
  48         return new MotifMenuUI();
  49     }
  50 
  51 // These should not be necessary because BasicMenuUI does this,
  52 // and this class overrides createChangeListener.
  53 //    protected void installListeners() {
  54 //      super.installListeners();
  55 //        changeListener = createChangeListener(menuItem);
  56 //        menuItem.addChangeListener(changeListener);
  57 //    }
  58 //
  59 //    protected void uninstallListeners() {
  60 //      super.uninstallListeners();
  61 //      menuItem.removeChangeListener(changeListener);
  62 //    }
  63 
  64     protected ChangeListener createChangeListener(JComponent c) {
  65         return new MotifChangeHandler((JMenu)c, this);
  66     }
  67 
  68     private boolean popupIsOpen(JMenu m,MenuElement me[]) {
  69         int i;
  70         JPopupMenu pm = m.getPopupMenu();
  71 
  72         for(i=me.length-1;i>=0;i--) {
  73             if(me[i].getComponent() == pm)
  74                 return true;
  75         }
  76         return false;
  77     }
  78 
  79     protected MouseInputListener createMouseInputListener(JComponent c) {
  80         return new MouseInputHandler();
  81     }
  82 
  83     public class MotifChangeHandler extends ChangeHandler {
  84         public MotifChangeHandler(JMenu m, MotifMenuUI ui) {
  85             super(m, ui);
  86         }
  87 
  88 
  89         public void stateChanged(ChangeEvent e) {
  90             JMenuItem c = (JMenuItem)e.getSource();
  91             if (c.isArmed() || c.isSelected()) {
  92                 c.setBorderPainted(true);
  93                 // c.repaint();
  94             } else {
  95                 c.setBorderPainted(false);
  96             }
  97 
  98             super.stateChanged(e);
  99         }
 100     }
 101 
 102     protected class MouseInputHandler implements MouseInputListener {
 103         public void mouseClicked(MouseEvent e) {}
 104         public void mousePressed(MouseEvent e) {
 105             MenuSelectionManager manager = MenuSelectionManager.defaultManager();
 106             JMenu menu = (JMenu)e.getComponent();
 107             if(menu.isEnabled()) {
 108                 if(menu.isTopLevelMenu()) {
 109                     if(menu.isSelected()) {
 110                         manager.clearSelectedPath();
 111                     } else {
 112                         Container cnt = menu.getParent();
 113                         if(cnt != null && cnt instanceof JMenuBar) {
 114                             MenuElement me[] = new MenuElement[2];
 115                             me[0]=(MenuElement)cnt;
 116                             me[1]=menu;
 117                             manager.setSelectedPath(me);
 118                         }
 119                     }
 120                 }
 121 
 122                 MenuElement path[] = getPath();
 123                 if (path.length > 0) {
 124                     MenuElement newPath[] = new MenuElement[path.length+1];
 125                     System.arraycopy(path,0,newPath,0,path.length);
 126                     newPath[path.length] = menu.getPopupMenu();
 127                     manager.setSelectedPath(newPath);
 128                 }
 129             }
 130         }
 131 
 132         public void mouseReleased(MouseEvent e) {
 133             MenuSelectionManager manager =
 134                 MenuSelectionManager.defaultManager();
 135             JMenuItem menuItem = (JMenuItem)e.getComponent();
 136             Point p = e.getPoint();
 137             if(!(p.x >= 0 && p.x < menuItem.getWidth() &&
 138                  p.y >= 0 && p.y < menuItem.getHeight())) {
 139                 manager.processMouseEvent(e);
 140             }
 141         }
 142         public void mouseEntered(MouseEvent e) {}
 143         public void mouseExited(MouseEvent e) {}
 144         public void mouseDragged(MouseEvent e) {
 145             MenuSelectionManager.defaultManager().processMouseEvent(e);
 146         }
 147         public void mouseMoved(MouseEvent e) { }
 148     }
 149 
 150 }