protected ChangeListener createChangeListener() 
{
        return getHandler();
}

 protected ContainerListener createContainerListener() 
{
        return getHandler();
}

 public static ComponentUI createUI(JComponent x) 
{
         
        return new BasicMenuBarUI();
}

 InputMap getInputMap(int condition) 
{
        if (condition == JComponent.WHEN_IN_FOCUSED_WINDOW) {
            Object[] bindings = (Object[])DefaultLookup.get
                                (menuBar, this, "MenuBar.windowBindings");
            if (bindings != null) {
                return LookAndFeel.makeComponentInputMap(menuBar, bindings);
            }
        }
        return null;
}

 public Dimension getMaximumSize(JComponent c) 
{
        return null;
}

 public Dimension getMinimumSize(JComponent c) 
{
        return null;
}

 protected  void installDefaults() 
{
        if (menuBar.getLayout() == null ||
            menuBar.getLayout() instanceof UIResource) {
            menuBar.setLayout(new DefaultMenuLayout(menuBar,BoxLayout.LINE_AXIS));
        }
        LookAndFeel.installProperty(menuBar, "opaque", Boolean.TRUE);
        LookAndFeel.installBorder(menuBar,"MenuBar.border");
        LookAndFeel.installColorsAndFont(menuBar,
                                              "MenuBar.background",
                                              "MenuBar.foreground",
                                              "MenuBar.font");
}

 protected  void installKeyboardActions() 
{
        InputMap inputMap = getInputMap(JComponent.WHEN_IN_FOCUSED_WINDOW);
        SwingUtilities.replaceUIInputMap(menuBar,
                           JComponent.WHEN_IN_FOCUSED_WINDOW, inputMap);
        LazyActionMap.installLazyActionMap(menuBar, BasicMenuBarUI.class,
                                           "MenuBar.actionMap");
}

 protected  void installListeners() 
{
        containerListener = createContainerListener();
        changeListener = createChangeListener();
        for (int i = 0; i <  menuBar.getMenuCount(); i++) {
            JMenu menu = menuBar.getMenu(i);
            if (menu!=null)
                menu.getModel().addChangeListener(changeListener);
        }
        menuBar.addContainerListener(containerListener);
}

 public  void installUI(JComponent c) 
{
        menuBar = (JMenuBar) c;
        installDefaults();
        installListeners();
        installKeyboardActions();
}

 static  void loadActionMap(LazyActionMap map) 
{
        map.put(new Actions(Actions.TAKE_FOCUS));
}

 protected  void uninstallDefaults() 
{
        if (menuBar!=null) {
            LookAndFeel.uninstallBorder(menuBar);
        }
}

 protected  void uninstallKeyboardActions() 
{
        SwingUtilities.replaceUIInputMap(menuBar, JComponent.
                                       WHEN_IN_FOCUSED_WINDOW, null);
        SwingUtilities.replaceUIActionMap(menuBar, null);
}

 protected  void uninstallListeners() 
{
        menuBar.removeContainerListener(containerListener);
        for (int i = 0; i <  menuBar.getMenuCount(); i++) {
            JMenu menu = menuBar.getMenu(i);
            if (menu !=null)
                menu.getModel().removeChangeListener(changeListener);
        }
        containerListener = null;
        changeListener = null;
        handler = null;
}

 public  void uninstallUI(JComponent c) 
{
        uninstallDefaults();
        uninstallListeners();
        uninstallKeyboardActions();
        menuBar = null;
}