Java JComboBox addHorizontalScrollBar(JComboBox box)

Description

add Horizontal Scroll Bar

License

Open Source License

Declaration

public static void addHorizontalScrollBar(JComboBox box) 

Method Source Code

//package com.java2s;
/**/*from   ww  w  .  ja va 2  s. co m*/
 *
 **
 * /**
 * Copyright (C) 2012 Jean Ollion
 *
 *
 *
 * This file is part of tango
 *
 * tango is free software; you can redistribute it and/or modify it under the
 * terms of the GNU General Public License as published by the Free Software
 * Foundation; either version 3 of the License, or (at your option) any later
 * version.
 *
 * This program 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 for more
 * details.
 *
 * You should have received a copy of the GNU General Public License along with
 * this program. If not, see <http://www.gnu.org/licenses/>.
 *
 * @author Jean Ollion
 */

import javax.swing.*;

public class Main {
    public static void addHorizontalScrollBar(JComboBox box) {
        if (box.getItemCount() == 0)
            return;
        Object comp = box.getUI().getAccessibleChild(box, 0);
        if (!(comp instanceof JPopupMenu)) {
            return;
        }
        JPopupMenu popup = (JPopupMenu) comp;
        int n = popup.getComponentCount();
        int i = 0;
        while (i < n) {
            if (popup.getComponent(i) instanceof JScrollPane) {
                JScrollPane scrollPane = (JScrollPane) popup.getComponent(i);
                scrollPane.setHorizontalScrollBar(new JScrollBar(JScrollBar.HORIZONTAL));
                scrollPane.setHorizontalScrollBarPolicy(JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED);
            }
            i++;
        }
    }
}

Related

1. addToCombo(JComboBox combo, Iterator it)
2. addToComboBox(JComboBox list, Object object)
3. adjustComboBoxHeight(JComboBox comboBox)
4. adjustPopupWidth(JComboBox comboBox)