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1
7
8 package javax.swing.plaf.basic;
9
10 import sun.swing.DefaultLookup;
11 import sun.swing.UIAction;
12 import javax.swing.*;
13 import javax.swing.event.*;
14 import java.awt.Color  ;
15 import java.awt.Component ;
16 import java.awt.Container ;
17 import java.awt.Dimension ;
18 import java.awt.Graphics ;
19 import java.awt.Insets ;
20 import java.awt.Point ;
21 import java.awt.Rectangle ;
22 import java.awt.event.*;
23 import java.beans.PropertyChangeEvent ;
24 import java.beans.PropertyChangeListener ;
25
26 import javax.swing.border.*;
27 import javax.swing.plaf.*;
28
29
30
39 public class BasicMenuBarUI extends MenuBarUI {
40 protected JMenuBar menuBar = null;
41 protected ContainerListener containerListener;
42 protected ChangeListener changeListener;
43 private Handler handler;
44
45 public static ComponentUI createUI(JComponent x) {
46 return new BasicMenuBarUI ();
47 }
48
49 static void loadActionMap(LazyActionMap map) {
50 map.put(new Actions(Actions.TAKE_FOCUS));
51 }
52
53 public void installUI(JComponent c) {
54 menuBar = (JMenuBar) c;
55
56 installDefaults();
57 installListeners();
58 installKeyboardActions();
59
60 }
61
62 protected void installDefaults() {
63 if (menuBar.getLayout() == null ||
64 menuBar.getLayout() instanceof UIResource) {
65 menuBar.setLayout(new DefaultMenuLayout (menuBar,BoxLayout.LINE_AXIS));
66 }
67
68 LookAndFeel.installProperty(menuBar, "opaque", Boolean.TRUE);
69 LookAndFeel.installBorder(menuBar,"MenuBar.border");
70 LookAndFeel.installColorsAndFont(menuBar,
71 "MenuBar.background",
72 "MenuBar.foreground",
73 "MenuBar.font");
74 }
75
76 protected void installListeners() {
77 containerListener = createContainerListener();
78 changeListener = createChangeListener();
79
80 for (int i = 0; i < menuBar.getMenuCount(); i++) {
81 JMenu menu = menuBar.getMenu(i);
82 if (menu!=null)
83 menu.getModel().addChangeListener(changeListener);
84 }
85 menuBar.addContainerListener(containerListener);
86 }
87
88 protected void installKeyboardActions() {
89 InputMap inputMap = getInputMap(JComponent.WHEN_IN_FOCUSED_WINDOW);
90
91 SwingUtilities.replaceUIInputMap(menuBar,
92 JComponent.WHEN_IN_FOCUSED_WINDOW, inputMap);
93
94 LazyActionMap.installLazyActionMap(menuBar, BasicMenuBarUI .class,
95 "MenuBar.actionMap");
96 }
97
98 InputMap getInputMap(int condition) {
99 if (condition == JComponent.WHEN_IN_FOCUSED_WINDOW) {
100 Object [] bindings = (Object [])DefaultLookup.get
101 (menuBar, this, "MenuBar.windowBindings");
102 if (bindings != null) {
103 return LookAndFeel.makeComponentInputMap(menuBar, bindings);
104 }
105 }
106 return null;
107 }
108
109 public void uninstallUI(JComponent c) {
110 uninstallDefaults();
111 uninstallListeners();
112 uninstallKeyboardActions();
113
114 menuBar = null;
115 }
116
117 protected void uninstallDefaults() {
118 if (menuBar!=null) {
119 LookAndFeel.uninstallBorder(menuBar);
120 }
121 }
122
123 protected void uninstallListeners() {
124 menuBar.removeContainerListener(containerListener);
125
126 for (int i = 0; i < menuBar.getMenuCount(); i++) {
127 JMenu menu = menuBar.getMenu(i);
128 if (menu !=null)
129 menu.getModel().removeChangeListener(changeListener);
130 }
131
132 containerListener = null;
133 changeListener = null;
134 handler = null;
135 }
136
137 protected void uninstallKeyboardActions() {
138 SwingUtilities.replaceUIInputMap(menuBar, JComponent.
139 WHEN_IN_FOCUSED_WINDOW, null);
140 SwingUtilities.replaceUIActionMap(menuBar, null);
141 }
142
143 protected ContainerListener createContainerListener() {
144 return getHandler();
145 }
146
147 protected ChangeListener createChangeListener() {
148 return getHandler();
149 }
150
151 private Handler getHandler() {
152 if (handler == null) {
153 handler = new Handler();
154 }
155 return handler;
156 }
157
158
159 public Dimension getMinimumSize(JComponent c) {
160 return null;
161 }
162
163 public Dimension getMaximumSize(JComponent c) {
164 return null;
165 }
166
167 private class Handler implements ChangeListener , ContainerListener {
168 public void stateChanged(ChangeEvent e) {
172 int i,c;
173 for(i=0,c = menuBar.getMenuCount() ; i < c ; i++) {
174 JMenu menu = menuBar.getMenu(i);
175 if(menu !=null && menu.isSelected()) {
176 menuBar.getSelectionModel().setSelectedIndex(i);
177 break;
178 }
179 }
180 }
181
182 public void componentAdded(ContainerEvent e) {
186 Component c = e.getChild();
187 if (c instanceof JMenu)
188 ((JMenu)c).getModel().addChangeListener(changeListener);
189 }
190 public void componentRemoved(ContainerEvent e) {
191 Component c = e.getChild();
192 if (c instanceof JMenu)
193 ((JMenu)c).getModel().removeChangeListener(changeListener);
194 }
195 }
196
197
198 private static class Actions extends UIAction {
199 private static final String TAKE_FOCUS = "takeFocus";
200
201 Actions(String key) {
202 super(key);
203 }
204
205 public void actionPerformed(ActionEvent e) {
206 JMenuBar menuBar = (JMenuBar)e.getSource();
208 MenuSelectionManager defaultManager = MenuSelectionManager.defaultManager();
209 MenuElement me[];
210 MenuElement subElements[];
211 JMenu menu = menuBar.getMenu(0);
212 if (menu!=null) {
213 me = new MenuElement[3];
214 me[0] = (MenuElement) menuBar;
215 me[1] = (MenuElement) menu;
216 me[2] = (MenuElement) menu.getPopupMenu();
217 defaultManager.setSelectedPath(me);
218 }
219 }
220 }
221 }
222
223
224 |
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