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	/*
	* Copyright (c) 1997, 2006, Oracle and/or its affiliates. All rights reserved.
	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
	*
	* This code is free software; you can redistribute it and/or modify it
	* under the terms of the GNU General Public License version 2 only, as
	* published by the Free Software Foundation. Oracle designates this
	* particular file as subject to the "Classpath" exception as provided
	* by Oracle in the LICENSE file that accompanied this code.
	*
	* This code is distributed in the hope that it will be useful, but WITHOUT
	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
	* version 2 for more details (a copy is included in the LICENSE file that
	* accompanied this code).
	*
	* You should have received a copy of the GNU General Public License version
	* 2 along with this work; if not, write to the Free Software Foundation,
	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
	*
	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
	* or visit www.oracle.com if you need additional information or have any
	* questions.
	*/

	package com.sun.java.swing.plaf.windows;

	import javax.swing.plaf.basic.*;
	import javax.swing.*;
	import javax.swing.plaf.ActionMapUIResource;
	import javax.swing.plaf.ComponentUI;
	import java.awt.event.ActionEvent;
	import java.awt.event.HierarchyEvent;
	import java.awt.event.HierarchyListener;
	import java.awt.event.WindowAdapter;
	import java.awt.event.WindowEvent;
	import java.awt.event.WindowListener;
	import java.awt.event.WindowStateListener;

	import java.awt.*;

	import com.sun.java.swing.plaf.windows.TMSchema.*;
	import com.sun.java.swing.plaf.windows.XPStyle.*;

	/**
	* Windows rendition of the component.
	* <p>
	* <strong>Warning:</strong>
	* Serialized objects of this class will not be compatible with
	* future Swing releases. The current serialization support is appropriate
	* for short term storage or RMI between applications running the same
	* version of Swing. A future release of Swing will provide support for
	* long term persistence.
	*/
	public class WindowsMenuBarUI extends BasicMenuBarUI
	{
	/* to be accessed on the EDT only */
	private WindowListener windowListener = null;
	private HierarchyListener hierarchyListener = null;
	private Window window = null;

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

	@Override
	protected void uninstallListeners() {
	uninstallWindowListener();
	if (hierarchyListener != null) {
	menuBar.removeHierarchyListener(hierarchyListener);
	hierarchyListener = null;
	}
	super.uninstallListeners();
	}
	private void installWindowListener() {
	if (windowListener == null) {
	Component component = menuBar.getTopLevelAncestor();
	if (component instanceof Window) {
	window = (Window) component;
	windowListener = new WindowAdapter() {
	@Override
	public void windowActivated(WindowEvent e) {
	menuBar.repaint();
	}
	@Override
	public void windowDeactivated(WindowEvent e) {
	menuBar.repaint();
	}
	};
	((Window) component).addWindowListener(windowListener);
	}
	}
	}
	private void uninstallWindowListener() {
	if (windowListener != null && window != null) {
	window.removeWindowListener(windowListener);
	}
	window = null;
	windowListener = null;
	}
	@Override
	protected void installListeners() {
	if (WindowsLookAndFeel.isOnVista()) {
	installWindowListener();
	hierarchyListener =
	new HierarchyListener() {
	public void hierarchyChanged(HierarchyEvent e) {
	if ((e.getChangeFlags()
	& HierarchyEvent.DISPLAYABILITY_CHANGED) != 0) {
	if (menuBar.isDisplayable()) {
	installWindowListener();
	} else {
	uninstallWindowListener();
	}
	}
	}
	};
	menuBar.addHierarchyListener(hierarchyListener);
	}
	super.installListeners();
	}

	protected void installKeyboardActions() {
	super.installKeyboardActions();
	ActionMap map = SwingUtilities.getUIActionMap(menuBar);
	if (map == null) {
	map = new ActionMapUIResource();
	SwingUtilities.replaceUIActionMap(menuBar, map);
	}
	map.put("takeFocus", new TakeFocus());
	}

	/**
	* Action that activates the menu (e.g. when F10 is pressed).
	* Unlike BasicMenuBarUI.TakeFocus, this Action will not show menu popup.
	*/
	private static class TakeFocus extends AbstractAction {
	public void actionPerformed(ActionEvent e) {
	JMenuBar menuBar = (JMenuBar)e.getSource();
	JMenu menu = menuBar.getMenu(0);
	if (menu != null) {
	MenuSelectionManager msm =
	MenuSelectionManager.defaultManager();
	MenuElement path[] = new MenuElement[2];
	path[0] = (MenuElement)menuBar;
	path[1] = (MenuElement)menu;
	msm.setSelectedPath(path);

	// show mnemonics
	WindowsLookAndFeel.setMnemonicHidden(false);
	WindowsLookAndFeel.repaintRootPane(menuBar);
	}
	}
	}

	@Override
	public void paint(Graphics g, JComponent c) {
	XPStyle xp = XPStyle.getXP();
	if (WindowsMenuItemUI.isVistaPainting(xp)) {
	Skin skin;
	skin = xp.getSkin(c, Part.MP_BARBACKGROUND);
	int width = c.getWidth();
	int height = c.getHeight();
	State state = isActive(c) ? State.ACTIVE : State.INACTIVE;
	skin.paintSkin(g, 0, 0, width, height, state);
	} else {
	super.paint(g, c);
	}
	}

	/**
	* Checks if component belongs to an active window.
	* @param c component to check
	* @return true if component belongs to an active window
	*/
	static boolean isActive(JComponent c) {
	JRootPane rootPane = c.getRootPane();
	if (rootPane != null) {
	Component component = rootPane.getParent();
	if (component instanceof Window) {
	return ((Window) component).isActive();
	}
	}
	return true;
	}
	}

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