org.datacleaner.widgets.EnumComboBoxListRenderer Maven / Gradle / Ivy

Go to download
/**
 * DataCleaner (community edition)
 * Copyright (C) 2014 Free Software Foundation, Inc.
 *
 * This copyrighted material is made available to anyone wishing to use, modify,
 * copy, or redistribute it subject to the terms and conditions of the GNU
 * Lesser General Public License, as published by the Free Software Foundation.
 *
 * 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 Lesser General Public License
 * for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this distribution; if not, write to:
 * Free Software Foundation, Inc.
 * 51 Franklin Street, Fifth Floor
 * Boston, MA  02110-1301  USA
 */
package org.datacleaner.widgets;

import javax.swing.Icon;
import javax.swing.JLabel;
import javax.swing.JList;
import javax.swing.ListCellRenderer;

import org.apache.metamodel.util.HasName;
import org.datacleaner.util.StringUtils;

/**
 * {@link ListCellRenderer} for enums in a combobox.
 */
public class EnumComboBoxListRenderer extends DCListCellRenderer {

    private static final long serialVersionUID = 1L;

    private final Icon _icon;

    public EnumComboBoxListRenderer() {
        this(null);
    }

    public EnumComboBoxListRenderer(final Icon icon) {
        super();
        _icon = icon;
    }

    @Override
    public JLabel getListCellRendererComponent(final JList list, final Object value, final int index,
            final boolean isSelected, final boolean cellHasFocus) {
        final JLabel result = (JLabel) super.getListCellRendererComponent(list, value, index, isSelected, cellHasFocus);

        if (value == null) {
            result.setText("- none -");
        } else if (value instanceof HasName) {
            final String name = ((HasName) value).getName();
            if (!StringUtils.isNullOrEmpty(name)) {
                result.setText(name);
            }
        }

        if (_icon != null) {
            result.setIcon(_icon);
        }

        return result;
    }
}