001 /* ===========================================================
002 * JFreeChart : a free chart library for the Java(tm) platform
003 * ===========================================================
004 *
005 * (C) Copyright 2000-2008, 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 * IntervalCategoryItemLabelGenerator.java
029 * ---------------------------------------
030 * (C) Copyright 2004-2008, by Object Refinery Limited.
031 *
032 * Original Author: David Gilbert (for Object Refinery Limited);
033 * Contributor(s): -;
034 *
035 * Changes
036 * -------
037 * 11-May-2004 : Version 1, split from IntervalCategoryItemLabelGenerator (DG);
038 *
039 */
040
041 package org.jfree.chart.labels;
042
043 import java.io.Serializable;
044 import java.text.DateFormat;
045 import java.text.NumberFormat;
046
047 import org.jfree.data.category.CategoryDataset;
048 import org.jfree.data.category.IntervalCategoryDataset;
049 import org.jfree.util.PublicCloneable;
050
051 /**
052 * A label generator for plots that use data from an
053 * {@link IntervalCategoryDataset}.
054 */
055 public class IntervalCategoryItemLabelGenerator
056 extends StandardCategoryItemLabelGenerator
057 implements CategoryItemLabelGenerator, PublicCloneable, Cloneable,
058 Serializable {
059
060 /** For serialization. */
061 private static final long serialVersionUID = 5056909225610630529L;
062
063 /** The default format string. */
064 public static final String DEFAULT_LABEL_FORMAT_STRING
065 = "({0}, {1}) = {3} - {4}";
066
067 /**
068 * Creates a new generator with a default number formatter.
069 */
070 public IntervalCategoryItemLabelGenerator() {
071 super(DEFAULT_LABEL_FORMAT_STRING, NumberFormat.getInstance());
072 }
073
074 /**
075 * Creates a new generator with the specified number formatter.
076 *
077 * @param labelFormat the label format string (<code>null</code> not
078 * permitted).
079 * @param formatter the number formatter (<code>null</code> not permitted).
080 */
081 public IntervalCategoryItemLabelGenerator(String labelFormat,
082 NumberFormat formatter) {
083 super(labelFormat, formatter);
084 }
085
086 /**
087 * Creates a new generator with the specified date formatter.
088 *
089 * @param labelFormat the label format string (<code>null</code> not
090 * permitted).
091 * @param formatter the date formatter (<code>null</code> not permitted).
092 */
093 public IntervalCategoryItemLabelGenerator(String labelFormat,
094 DateFormat formatter) {
095 super(labelFormat, formatter);
096 }
097
098 /**
099 * Creates the array of items that can be passed to the
100 * <code>MessageFormat</code> class for creating labels.
101 *
102 * @param dataset the dataset (<code>null</code> not permitted).
103 * @param row the row index (zero-based).
104 * @param column the column index (zero-based).
105 *
106 * @return The items (never <code>null</code>).
107 */
108 protected Object[] createItemArray(CategoryDataset dataset,
109 int row, int column) {
110 Object[] result = new Object[5];
111 result[0] = dataset.getRowKey(row).toString();
112 result[1] = dataset.getColumnKey(column).toString();
113 Number value = dataset.getValue(row, column);
114 if (getNumberFormat() != null) {
115 result[2] = getNumberFormat().format(value);
116 }
117 else if (getDateFormat() != null) {
118 result[2] = getDateFormat().format(value);
119 }
120
121 if (dataset instanceof IntervalCategoryDataset) {
122 IntervalCategoryDataset icd = (IntervalCategoryDataset) dataset;
123 Number start = icd.getStartValue(row, column);
124 Number end = icd.getEndValue(row, column);
125 if (getNumberFormat() != null) {
126 result[3] = getNumberFormat().format(start);
127 result[4] = getNumberFormat().format(end);
128 }
129 else if (getDateFormat() != null) {
130 result[3] = getDateFormat().format(start);
131 result[4] = getDateFormat().format(end);
132 }
133 }
134 return result;
135 }
136
137 }