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Java > Open Source Codes > com > sun > java > swing > plaf > motif > MotifMenuUI


1 /*
2  * @(#)MotifMenuUI.java 1.32 03/12/19
3  *
4  * Copyright 2004 Sun Microsystems, Inc. All rights reserved.
5  * SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
6  */
7 package com.sun.java.swing.plaf.motif;
8
9 import java.awt.*;
10 import java.awt.event.*;
11 import javax.swing.*;
12 import javax.swing.event.*;
13 import javax.swing.plaf.*;
14 import javax.swing.border.*;
15 import javax.swing.plaf.basic.*;
16
17
18 import javax.swing.plaf.basic.BasicMenuUI JavaDoc;
19
20 /**
21  * A Motif L&F implementation of MenuUI.
22  * <p>
23  *
24  * @version 1.32 12/19/03
25  * @author Georges Saab
26  * @author Rich Schiavi
27  */
28 public class MotifMenuUI extends BasicMenuUI JavaDoc
29 {
30
31     public static ComponentUI createUI( JComponent x ) {
32     return new MotifMenuUI();
33     }
34  
35 // These should not be necessary because BasicMenuUI does this,
36 // and this class overrides createChangeListener.
37 // protected void installListeners() {
38 // super.installListeners();
39 // changeListener = createChangeListener(menuItem);
40 // menuItem.addChangeListener(changeListener);
41 // }
42 //
43 // protected void uninstallListeners() {
44 // super.uninstallListeners();
45 // menuItem.removeChangeListener(changeListener);
46 // }
47
48     protected ChangeListener createChangeListener(JComponent c) {
49         return new MotifChangeHandler((JMenu)c, this);
50     }
51
52     public void paint(Graphics g, JComponent c){
53     MotifGraphicsUtils.paintMenuItem(g,c,checkIcon,arrowIcon,
54                      selectionBackground, selectionForeground,
55                      defaultTextIconGap);
56     }
57
58     private boolean popupIsOpen(JMenu m,MenuElement me[]) {
59         int i;
60         JPopupMenu pm = m.getPopupMenu();
61
62         for(i=me.length-1;i>=0;i--) {
63             if(me[i].getComponent() == pm)
64                 return true;
65         }
66         return false;
67     }
68
69     protected MouseInputListener createMouseInputListener(JComponent c) {
70     return new MouseInputHandler();
71     }
72
73     public class MotifChangeHandler extends ChangeHandler {
74     public MotifChangeHandler(JMenu m, MotifMenuUI ui) {
75         super(m, ui);
76     }
77     
78
79     public void stateChanged(ChangeEvent e) {
80         JMenuItem c = (JMenuItem)e.getSource();
81         if (c.isArmed() || c.isSelected()) {
82         c.setBorderPainted(true);
83         // c.repaint();
84 } else {
85         c.setBorderPainted(false);
86         }
87
88         super.stateChanged(e);
89     }
90     }
91
92     protected class MouseInputHandler implements MouseInputListener {
93     public void mouseClicked(MouseEvent e) {}
94     public void mousePressed(MouseEvent e) {
95         MenuSelectionManager manager = MenuSelectionManager.defaultManager();
96         JMenu menu = (JMenu)e.getComponent();
97             if(menu.isEnabled()) {
98         if(menu.isTopLevelMenu()) {
99             if(menu.isSelected()) {
100             manager.clearSelectedPath();
101             } else {
102             Container cnt = menu.getParent();
103             if(cnt != null && cnt instanceof JMenuBar) {
104                 MenuElement me[] = new MenuElement[2];
105                 me[0]=(MenuElement)cnt;
106                 me[1]=menu;
107                 manager.setSelectedPath(me);
108             }
109             }
110         }
111         
112         MenuElement path[] = getPath();
113                 if (path.length > 0) {
114                     MenuElement newPath[] = new MenuElement[path.length+1];
115                     System.arraycopy(path,0,newPath,0,path.length);
116                     newPath[path.length] = menu.getPopupMenu();
117                     manager.setSelectedPath(newPath);
118                 }
119         }
120     }
121
122     public void mouseReleased(MouseEvent e) {
123         MenuSelectionManager manager =
124         MenuSelectionManager.defaultManager();
125         JMenuItem menuItem = (JMenuItem)e.getComponent();
126         Point p = e.getPoint();
127         if(!(p.x >= 0 && p.x < menuItem.getWidth() &&
128          p.y >= 0 && p.y < menuItem.getHeight())) {
129         manager.processMouseEvent(e);
130         }
131     }
132     public void mouseEntered(MouseEvent e) {}
133     public void mouseExited(MouseEvent e) {}
134     public void mouseDragged(MouseEvent e) {
135         MenuSelectionManager.defaultManager().processMouseEvent(e);
136     }
137     public void mouseMoved(MouseEvent e) { }
138     }
139
140 }
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