ExtraTitleEnhancer


1   /* ================================================================
2    * Cewolf : Chart enabling Web Objects Framework
3    * ================================================================
4    *
5    * Project Info:  http://cewolf.sourceforge.net
6    * Project Lead:  Guido Laures (guido@laures.de);
7    *
8    * (C) Copyright 2002, by Guido Laures
9    *
10   * This library is free software; you can redistribute it and/or modify it under the terms
11   * of the GNU Lesser General Public License as published by the Free Software Foundation;
12   * either version 2.1 of the License, or (at your option) any later version.
13   *
14   * This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
15   * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
16   * See the GNU Lesser General Public License for more details.
17   *
18   * You should have received a copy of the GNU Lesser General Public License along with this
19   * library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
20   * Boston, MA 02111-1307, USA.
21   */
22  
23  package de.laures.cewolf.example;
24  
25  import java.io.Serializable  ;
26  import java.util.Map  ;
27  
28  import org.jfree.chart.JFreeChart;
29  import org.jfree.chart.title.TextTitle;
30  
31  import de.laures.cewolf.ChartPostProcessor;
32  
33  /** 
34   * An example chart postprocessor which adds an extra sub title to a chart.
35   * @author  Guido Laures 
36   */
37  public class ExtraTitleEnhancer implements ChartPostProcessor, Serializable  {
38  
39      /** Creates a new instance of ExtraTitleEnhancer */
40      public ExtraTitleEnhancer() {
41      }
42  
43      public void processChart(Object   chart, Map   params) {
44          String   title = (String  )params.get("title");
45          if (title != null && title.trim().length() > 0) {
46              ((JFreeChart)chart).addSubtitle(new TextTitle(title));
47          }
48      }
49      
50  }
51
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