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/* * @(#)BasicMenuBarUI.java 1.81 05/11/17 * * Copyright 2006 Sun Microsystems, Inc. All rights reserved. * SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms. */ package javax.swing.plaf.basic; import sun.swing.DefaultLookup; import sun.swing.UIAction; import javax.swing.*; import javax.swing.event.*; import java.awt.Color; import java.awt.Component; import java.awt.Container; import java.awt.Dimension; import java.awt.Graphics; import java.awt.Insets; import java.awt.Point; import java.awt.Rectangle; import java.awt.event.*; import java.beans.PropertyChangeEvent; import java.beans.PropertyChangeListener; import javax.swing.border.*; import javax.swing.plaf.*; /** * A default L&F implementation of MenuBarUI. This implementation * is a "combined" view/controller. * * @version 1.81 11/17/05 * @author Georges Saab * @author David Karlton * @author Arnaud Weber */ public class BasicMenuBarUI extends MenuBarUI { protected JMenuBar menuBar = null; protected ContainerListener containerListener; protected ChangeListener changeListener; private Handler handler; public static ComponentUI createUI(JComponent x) { return new BasicMenuBarUI(); } static void loadActionMap(LazyActionMap map) { map.put(new Actions(Actions.TAKE_FOCUS)); } public void installUI(JComponent c) { menuBar = (JMenuBar) c; installDefaults(); installListeners(); installKeyboardActions(); } 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 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); } 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"); } 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 void uninstallUI(JComponent c) { uninstallDefaults(); uninstallListeners(); uninstallKeyboardActions(); menuBar = null; } protected void uninstallDefaults() { if (menuBar!=null) { LookAndFeel.uninstallBorder(menuBar); } } 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; } protected void uninstallKeyboardActions() { SwingUtilities.replaceUIInputMap(menuBar, JComponent. WHEN_IN_FOCUSED_WINDOW, null); SwingUtilities.replaceUIActionMap(menuBar, null); } protected ContainerListener createContainerListener() { return getHandler(); } protected ChangeListener createChangeListener() { return getHandler(); } private Handler getHandler() { if (handler == null) { handler = new Handler(); } return handler; } public Dimension getMinimumSize(JComponent c) { return null; } public Dimension getMaximumSize(JComponent c) { return null; } private class Handler implements ChangeListener, ContainerListener { // // ChangeListener // public void stateChanged(ChangeEvent e) { int i,c; for(i=0,c = menuBar.getMenuCount() ; i < c ; i++) { JMenu menu = menuBar.getMenu(i); if(menu !=null && menu.isSelected()) { menuBar.getSelectionModel().setSelectedIndex(i); break; } } } // // ContainerListener // public void componentAdded(ContainerEvent e) { Component c = e.getChild(); if (c instanceof JMenu) ((JMenu)c).getModel().addChangeListener(changeListener); } public void componentRemoved(ContainerEvent e) { Component c = e.getChild(); if (c instanceof JMenu) ((JMenu)c).getModel().removeChangeListener(changeListener); } } private static class Actions extends UIAction { private static final String TAKE_FOCUS = "takeFocus"; Actions(String key) { super(key); } public void actionPerformed(ActionEvent e) { // TAKE_FOCUS JMenuBar menuBar = (JMenuBar)e.getSource(); MenuSelectionManager defaultManager = MenuSelectionManager.defaultManager(); MenuElement me[]; MenuElement subElements[]; JMenu menu = menuBar.getMenu(0); if (menu!=null) { me = new MenuElement[3]; me[0] = (MenuElement) menuBar; me[1] = (MenuElement) menu; me[2] = (MenuElement) menu.getPopupMenu(); defaultManager.setSelectedPath(me); } } } }