/*

 * Copyright (c) 1998, 2013, 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

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 */

package javax.swing.plaf.metal;

import sun.swing.SwingUtilities2;

import sun.awt.AppContext;

import javax.swing.*;

import javax.swing.plaf.*;

import javax.swing.plaf.basic.*;

import java.awt.*;

/**

 * A Windows L&F implementation of LabelUI.  This implementation

 * is completely static, i.e. there's only one UIView implementation

 * that's shared by all JLabel objects.

 *

 * @author Hans Muller

 */

public class MetalLabelUI extends BasicLabelUI

{

   /**

    * The default <code>MetalLabelUI</code> instance. This field might

    * not be used. To change the default instance use a subclass which

    * overrides the <code>createUI</code> method, and place that class

    * name in defaults table under the key "LabelUI".

    */

    protected static MetalLabelUI metalLabelUI = new MetalLabelUI();

    private static final Object METAL_LABEL_UI_KEY = new Object();

    public static ComponentUI createUI(JComponent c) {

        if (System.getSecurityManager() != null) {

            AppContext appContext = AppContext.getAppContext();

            MetalLabelUI safeMetalLabelUI =

                    (MetalLabelUI) appContext.get(METAL_LABEL_UI_KEY);

            if (safeMetalLabelUI == null) {

                safeMetalLabelUI = new MetalLabelUI();

                appContext.put(METAL_LABEL_UI_KEY, safeMetalLabelUI);

            }

            return safeMetalLabelUI;

        }

        return metalLabelUI;

    }

    /**

     * Just paint the text gray (Label.disabledForeground) rather than

     * in the labels foreground color.

     *

     * @see #paint

     * @see #paintEnabledText

     */

    protected void paintDisabledText(JLabel l, Graphics g, String s, int textX, int textY)

    {

        int mnemIndex = l.getDisplayedMnemonicIndex();

        g.setColor(UIManager.getColor("Label.disabledForeground"));

        SwingUtilities2.drawStringUnderlineCharAt(l, g, s, mnemIndex,

                                                   textX, textY);

    }

}