extratitleenhancer.java

cewolf是个一个自动报表程序

/* ================================================================
 * Cewolf : Chart enabling Web Objects Framework
 * ================================================================
 *
 * Project Info:  http://cewolf.sourceforge.net
 * Project Lead:  Guido Laures ([e-mail]);
 *
 * (C) Copyright 2002, by Guido Laures
 *
 * This library is free software; you can redistribute it and/or modify it under the terms
 * of the GNU Lesser General Public License as published by the Free Software Foundation;
 * either version 2.1 of the License, or (at your option) any later version.
 *
 * This library 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
 * library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
 * Boston, MA 02111-1307, USA.
 */

package de.laures.cewolf.example;

import java.io.Serializable;
import java.util.Map;

import org.jfree.chart.JFreeChart;
import org.jfree.chart.title.TextTitle;

import de.laures.cewolf.ChartPostProcessor;

/** 
 * An example chart postprocessor which adds an extra sub title to a chart.
 * @author  Guido Laures 
 */
public class ExtraTitleEnhancer implements ChartPostProcessor, Serializable{

    /** Creates a new instance of ExtraTitleEnhancer */
    public ExtraTitleEnhancer() {
    }

    public void processChart(Object chart, Map params) {
        String title = (String)params.get("title");
        if (title != null && title.trim().length() > 0) {
            ((JFreeChart)chart).addSubtitle(new TextTitle(title));
        }
    }
    
}