/*

 * 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

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 */

package javax.swing.plaf;

import javax.swing.JComboBox;

/**

 * Pluggable look and feel interface for JComboBox.

 *

 * @author Arnaud Weber

 * @author Tom Santos

 */

public abstract class ComboBoxUI extends ComponentUI {

    /**

     * Set the visibility of the popup

     *

     * @param c a {@code JComboBox}

     * @param v a {@code boolean} determining the visibilty of the popup

     */

    public abstract void setPopupVisible( JComboBox<?> c, boolean v );

    /**

     * Determine the visibility of the popup

     *

     * @param c a {@code JComboBox}

     * @return true if popup of the {@code JComboBox} is visible

     */

    public abstract boolean isPopupVisible( JComboBox<?> c );

    /**

     * Determine whether or not the combo box itself is traversable

     *

     * @param c a {@code JComboBox}

     * @return true if the given {@code JComboBox} is traversable

     */

    public abstract boolean isFocusTraversable( JComboBox<?> c );

}