/*

 * Copyright (c) 1997, 2014, 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.basic;

import sun.awt.AppContext;

import javax.swing.*;

import java.awt.*;

import java.awt.event.*;

import javax.swing.plaf.*;

import java.io.Serializable;

/**

 * CheckboxUI implementation for BasicCheckboxUI

 * <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.  As of 1.4, support for long term storage

 * of all JavaBeans™

 * has been added to the <code>java.beans</code> package.

 * Please see {@link java.beans.XMLEncoder}.

 *

 * @author Jeff Dinkins

 */

@SuppressWarnings("serial") // Same-version serialization only

public class BasicCheckBoxUI extends BasicRadioButtonUI {

    private static final Object BASIC_CHECK_BOX_UI_KEY = new Object();

    private final static String propertyPrefix = "CheckBox" + ".";

    // ********************************

    //            Create PLAF

    // ********************************

    /**

     * Returns an instance of {@code BasicCheckBoxUI}.

     *

     * @param b a component

     * @return an instance of {@code BasicCheckBoxUI}

     */

    public static ComponentUI createUI(JComponent b) {

        AppContext appContext = AppContext.getAppContext();

        BasicCheckBoxUI checkboxUI =

                (BasicCheckBoxUI) appContext.get(BASIC_CHECK_BOX_UI_KEY);

        if (checkboxUI == null) {

            checkboxUI = new BasicCheckBoxUI();

            appContext.put(BASIC_CHECK_BOX_UI_KEY, checkboxUI);

        }

        return checkboxUI;

    }

    public String getPropertyPrefix() {

        return propertyPrefix;

    }

}