XYDatasetLabelGenerator


1   /*
2    * ============================================================================
3    * GNU Lesser General Public License
4    * ============================================================================
5    *
6    * JasperReports - Free Java report-generating library.
7    * Copyright (C) 2001-2006 JasperSoft Corporation http://www.jaspersoft.com
8    * 
9    * This library is free software; you can redistribute it and/or
10   * modify it under the terms of the GNU Lesser General Public
11   * License as published by the Free Software Foundation; either
12   * 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,
15   * but WITHOUT ANY WARRANTY; without even the implied warranty of
16   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
17   * Lesser General Public License for more details.
18   * 
19   * You should have received a copy of the GNU Lesser General Public
20   * License along with this library; if not, write to the Free Software
21   * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307, USA.
22   * 
23   * JasperSoft Corporation
24   * 303 Second Street, Suite 450 North
25   * San Francisco, CA 94107
26   * http://www.jaspersoft.com
27   */
28  package net.sf.jasperreports.charts.util;
29  
30  import java.util.Map  ;
31  
32  import net.sf.jasperreports.engine.JRConstants;
33  
34  import org.jfree.chart.labels.StandardXYItemLabelGenerator;
35  import org.jfree.data.xy.XYDataset;
36  import org.jfree.data.xy.XYSeriesCollection;
37  
38  
39  /**
40   * @author Teodor Danciu (teodord@users.sourceforge.net)
41   * @version $Id: XYDatasetLabelGenerator.java 1229 2006-04-19 13:27:35 +0300 (Wed, 19 Apr 2006) teodord $
42   */
43  public class XYDatasetLabelGenerator extends StandardXYItemLabelGenerator 
44  {
45      private static final long serialVersionUID = JRConstants.SERIAL_VERSION_UID;
46      
47      private Map   labelsMap = null;
48      
49      public XYDatasetLabelGenerator(Map   labelsMap)
50      {
51          this.labelsMap = labelsMap;
52      }
53      
54      public String   generateLabel(XYDataset dataset, int series, int item)
55      {
56          Comparable   seriesName = dataset.getSeriesKey(series);
57          Map   labels = (Map  )labelsMap.get(seriesName);
58          if(labels != null)
59          {
60              return (String  )labels.get(((XYSeriesCollection)dataset).getX(series, item));
61          }
62          return super.generateLabel( dataset, series, item );
63      }
64  }
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