001    /* ======================================================
002     * Orson : a free chart beans library based on JFreeChart
003     * ======================================================
004     *
005     * (C) Copyright 2007, by Object Refinery Limited.
006     *
007     * Project Info:  not-yet-released
008     *
009     * This library is free software; you can redistribute it and/or modify it 
010     * under the terms of the GNU Lesser General Public License as published by 
011     * the Free Software Foundation; either version 2.1 of the License, or 
012     * (at your option) any later version.
013     *
014     * This library is distributed in the hope that it will be useful, but 
015     * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 
016     * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public 
017     * License for more details.
018     *
019     * You should have received a copy of the GNU Lesser General Public
020     * License along with this library; if not, write to the Free Software
021     * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, 
022     * USA.  
023     *
024     * [Java is a trademark or registered trademark of Sun Microsystems, Inc. 
025     * in the United States and other countries.]
026     */
027    
028    package org.jfree.beans.events;
029    
030    import java.util.EventListener;
031    
032    import org.jfree.beans.AbstractXYChart;
033    
034    /**
035     * A listener for item clicks on a {@link AbstractXYChart}.
036     */
037    public interface XYItemClickListener extends EventListener {
038    
039        /**
040         * Called when the user clicks on an item within a category chart.
041         * 
042         * @param event  the event.
043         */
044        public void onXYItemClick(XYItemClickEvent event);
045        
046    }