001 /* =========================================================== 002 * JFreeChart : a free chart library for the Java(tm) platform 003 * =========================================================== 004 * 005 * (C) Copyright 2000-2005, by Object Refinery Limited and Contributors. 006 * 007 * Project Info: http://www.jfree.org/jfreechart/index.html 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 * StandardCategoryItemLabelGenerator.java 029 * --------------------------------------- 030 * (C) Copyright 2004, 2005, by Object Refinery Limited. 031 * 032 * Original Author: David Gilbert (for Object Refinery Limited); 033 * Contributor(s): -; 034 * 035 * $Id: StandardCategoryItemLabelGenerator.java,v 1.2.2.1 2005/10/25 20:49:02 mungady Exp $ 036 * 037 * Changes 038 * ------- 039 * 11-May-2004 : Version 1 (DG); 040 * 20-Apr-2005 : Renamed StandardCategoryLabelGenerator 041 * --> StandardCategoryItemLabelGenerator (DG); 042 */ 043 044 package org.jfree.chart.labels; 045 046 import java.io.Serializable; 047 import java.text.DateFormat; 048 import java.text.NumberFormat; 049 050 import org.jfree.data.category.CategoryDataset; 051 import org.jfree.util.PublicCloneable; 052 053 /** 054 * A standard label generator that can be used with a 055 * {@link org.jfree.chart.renderer.category.CategoryItemRenderer}. 056 */ 057 public class StandardCategoryItemLabelGenerator 058 extends AbstractCategoryItemLabelGenerator 059 implements CategoryItemLabelGenerator, Cloneable, PublicCloneable, 060 Serializable { 061 062 /** For serialization. */ 063 private static final long serialVersionUID = 3499701401211412882L; 064 065 /** The default format string. */ 066 public static final String DEFAULT_LABEL_FORMAT_STRING = "{2}"; 067 068 /** 069 * Creates a new generator with a default number formatter. 070 */ 071 public StandardCategoryItemLabelGenerator() { 072 super(DEFAULT_LABEL_FORMAT_STRING, NumberFormat.getInstance()); 073 } 074 075 /** 076 * Creates a new generator with the specified number formatter. 077 * 078 * @param labelFormat the label format string (<code>null</code> not 079 * permitted). 080 * @param formatter the number formatter (<code>null</code> not permitted). 081 */ 082 public StandardCategoryItemLabelGenerator(String labelFormat, 083 NumberFormat formatter) { 084 super(labelFormat, formatter); 085 } 086 087 /** 088 * Creates a new generator with the specified date formatter. 089 * 090 * @param labelFormat the label format string (<code>null</code> not 091 * permitted). 092 * @param formatter the date formatter (<code>null</code> not permitted). 093 */ 094 public StandardCategoryItemLabelGenerator(String labelFormat, 095 DateFormat formatter) { 096 super(labelFormat, formatter); 097 } 098 099 /** 100 * Generates the label for an item in a dataset. Note: in the current 101 * dataset implementation, each row is a series, and each column contains 102 * values for a particular category. 103 * 104 * @param dataset the dataset (<code>null</code> not permitted). 105 * @param row the row index (zero-based). 106 * @param column the column index (zero-based). 107 * 108 * @return The label (possibly <code>null</code>). 109 */ 110 public String generateLabel(CategoryDataset dataset, int row, int column) { 111 return generateLabelString(dataset, row, column); 112 } 113 114 }