/*
 * Copyright (c) 2001-2006 JGoodies Karsten Lentzsch. All Rights Reserved.
 *
 * Redistribution and use in source and binary forms, with or without 
 * modification, are permitted provided that the following conditions are met:
 * 
 *  o Redistributions of source code must retain the above copyright notice, 
 *    this list of conditions and the following disclaimer. 
 *     
 *  o Redistributions in binary form must reproduce the above copyright notice, 
 *    this list of conditions and the following disclaimer in the documentation 
 *    and/or other materials provided with the distribution. 
 *     
 *  o Neither the name of JGoodies Karsten Lentzsch nor the names of 
 *    its contributors may be used to endorse or promote products derived 
 *    from this software without specific prior written permission. 
 *     
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 
 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 
 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR 
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 
 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 
 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE 
 * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, 
 * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 
 */

package com.jgoodies.looks.plastic;

import java.awt.Color;
import java.awt.Graphics;

import javax.swing.Icon;
import javax.swing.JComponent;
import javax.swing.JMenu;
import javax.swing.JMenuItem;
import javax.swing.plaf.ComponentUI;

import com.jgoodies.looks.common.ExtBasicMenuUI;

/**
 * The JGoodies Plastic look&amp;feel implementation of <code>MenuUI</code>.
 * It differs from the superclass in that it uses an overhauled menu
 * rendering an aligmnent system. Furthermore, you can set a client property
 * <tt>Options.NO_ICONS_KEY</tt> to indicate that this menu has no icons.
 *
 * @author  Karsten Lentzsch
 * @version $Revision: 1.4 $
 * 
 * @see	com.jgoodies.looks.Options
 */
public final class PlasticMenuUI extends ExtBasicMenuUI {
	
    
    private boolean oldOpaque;
    
    
	public static ComponentUI createUI(JComponent b) {
		return new PlasticMenuUI();
	}
	
    protected void installDefaults() {
        super.installDefaults();
        oldOpaque = menuItem.isOpaque();
    }
    
    protected void uninstallDefaults() {
        super.uninstallDefaults();
        menuItem.setOpaque(oldOpaque);
    }


	
	/**
	 * Makes the item transparent, if it is not a sub menu and the model is not selected.
	 */
	protected void paintMenuItem(Graphics g, JComponent c, Icon aCheckIcon,
		Icon anArrowIcon, Color background, Color foreground, int textIconGap) {
        JMenuItem b = (JMenuItem) c;

        if (((JMenu) menuItem).isTopLevelMenu()) {
            b.setOpaque(false);
            if (b.getModel().isSelected()) {
                int menuWidth  = menuItem.getWidth();
                int menuHeight = menuItem.getHeight();
                Color oldColor = g.getColor();
                g.setColor(background);
                g.fillRect(0, 0, menuWidth, menuHeight);
                g.setColor(oldColor);
            }
        }
		super.paintMenuItem(g, c, aCheckIcon, anArrowIcon, background, foreground, textIconGap);
	}
	

}