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: * IntervalCategoryItemLabelGenerator.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: IntervalCategoryItemLabelGenerator.java,v 1.2.2.1 2005/10/25 20:49:02 mungady Exp $
036: *
037: * Changes
038: * -------
039: * 11-May-2004 : Version 1, split from IntervalCategoryItemLabelGenerator (DG);
040: *
041: */
042:
043: package org.jfree.chart.labels;
044:
045: import java.io.Serializable;
046: import java.text.DateFormat;
047: import java.text.NumberFormat;
048:
049: import org.jfree.data.category.CategoryDataset;
050: import org.jfree.data.category.IntervalCategoryDataset;
051: import org.jfree.util.PublicCloneable;
052:
053: /**
054: * A label generator for plots that use data from an
055: * {@link IntervalCategoryDataset}.
056: */
057: public class IntervalCategoryItemLabelGenerator extends
058: StandardCategoryItemLabelGenerator implements
059: CategoryItemLabelGenerator, PublicCloneable, Cloneable,
060: Serializable {
061:
062: /** For serialization. */
063: private static final long serialVersionUID = 5056909225610630529L;
064:
065: /** The default format string. */
066: public static final String DEFAULT_LABEL_FORMAT_STRING = "({0}, {1}) = {3} - {4}";
067:
068: /**
069: * Creates a new generator with a default number formatter.
070: */
071: public IntervalCategoryItemLabelGenerator() {
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 IntervalCategoryItemLabelGenerator(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 IntervalCategoryItemLabelGenerator(String labelFormat,
095: DateFormat formatter) {
096: super (labelFormat, formatter);
097: }
098:
099: /**
100: * Creates the array of items that can be passed to the
101: * <code>MessageFormat</code> class for creating labels.
102: *
103: * @param dataset the dataset (<code>null</code> not permitted).
104: * @param row the row index (zero-based).
105: * @param column the column index (zero-based).
106: *
107: * @return The items (never <code>null</code>).
108: */
109: protected Object[] createItemArray(CategoryDataset dataset,
110: int row, int column) {
111: Object[] result = new Object[5];
112: result[0] = dataset.getRowKey(row).toString();
113: result[1] = dataset.getColumnKey(column).toString();
114: Number value = dataset.getValue(row, column);
115: if (getNumberFormat() != null) {
116: result[2] = getNumberFormat().format(value);
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: } else if (getDateFormat() != null) {
129: result[3] = getDateFormat().format(start);
130: result[4] = getDateFormat().format(end);
131: }
132: }
133: return result;
134: }
135:
136: }
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