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     * BoxAndWhiskerXYToolTipGenerator.java
029     * ------------------------------------
030     * (C) Copyright 2003-2005, by David Browning and Contributors.
031     *
032     * Original Author:  David Browning;
033     * Contributor(s):   David Gilbert (for Object Refinery Limited);
034     *
035     * $Id: BoxAndWhiskerXYToolTipGenerator.java,v 1.4.2.1 2005/10/25 20:49:02 mungady Exp $
036     *
037     * Changes
038     * -------
039     * 05-Aug-2003 : Version 1, contributed by David Browning (DG);
040     * 13-Aug-2003 : Implemented Cloneable (DG);
041     * 28-Aug-2003 : Updated for changes in dataset API (DG);
042     * 25-Feb-2004 : Renamed XYToolTipGenerator --> XYItemLabelGenerator (DG);
043     * 27-Feb-2004 : Renamed BoxAndWhiskerItemLabelGenerator --> 
044     *               BoxAndWhiskerXYItemLabelGenerator, and modified to use 
045     *               MessageFormat (DG);
046     * 15-Jul-2004 : Switched getX() with getXValue() and getY() with 
047     *               getYValue() (DG);
048     *
049     */
050    
051    package org.jfree.chart.labels;
052    
053    import java.io.Serializable;
054    import java.text.DateFormat;
055    import java.text.MessageFormat;
056    import java.text.NumberFormat;
057    import java.util.Date;
058    
059    import org.jfree.data.statistics.BoxAndWhiskerXYDataset;
060    import org.jfree.data.xy.XYDataset;
061    
062    /**
063     * An item label generator for plots that use data from a 
064     * {@link BoxAndWhiskerXYDataset}.
065     * <P>
066     * The tooltip text and item label text are composed using a 
067     * {@link java.text.MessageFormat} object, that can aggregate some or all of 
068     * the following string values into a message.
069     * <table>
070     * <tr><td>0</td><td>Series Name</td></tr>
071     * <tr><td>1</td><td>X (value or date)</td></tr>
072     * <tr><td>2</td><td>Mean</td></tr>
073     * <tr><td>3</td><td>Median</td></tr>
074     * <tr><td>4</td><td>Minimum</td></tr>
075     * <tr><td>5</td><td>Maximum</td></tr>
076     * <tr><td>6</td><td>Quartile 1</td></tr>
077     * <tr><td>7</td><td>Quartile 3</td></tr>
078     * </table>
079     * 
080     * @author David Browning
081     */
082    public class BoxAndWhiskerXYToolTipGenerator extends StandardXYToolTipGenerator
083                                                 implements XYToolTipGenerator,
084                                                            Cloneable,
085                                                            Serializable {
086    
087        /** For serialization. */
088        private static final long serialVersionUID = -2648775791161459710L;
089        
090        /** The default tooltip format string. */
091        public static final String DEFAULT_TOOL_TIP_FORMAT 
092            = "X: {1} Mean: {2} Median: {3} Min: {4} Max: {5} Q1: {6} Q3: {7} ";
093        
094        /**
095         * Creates a default item label generator.
096         */
097        public BoxAndWhiskerXYToolTipGenerator() {
098            super(
099                DEFAULT_TOOL_TIP_FORMAT,
100                NumberFormat.getInstance(), NumberFormat.getInstance()
101            );
102        }
103    
104        /**
105         * Creates a new item label generator.  If the date formatter is not 
106         * <code>null</code>, the x-values will be formatted as dates.
107         * 
108         * @param toolTipFormat  the tool tip format string (<code>null</code> not 
109         *                       permitted).
110         * @param numberFormat  the number formatter (<code>null</code> not 
111         *                      permitted).
112         * @param dateFormat  the date formatter (<code>null</code> permitted).
113         */
114        public BoxAndWhiskerXYToolTipGenerator(String toolTipFormat, 
115                                               DateFormat dateFormat, 
116                                               NumberFormat numberFormat) {
117            
118            super(toolTipFormat, dateFormat, numberFormat);
119        
120        }
121        
122        /**
123         * Creates the array of items that can be passed to the 
124         * {@link MessageFormat} class for creating labels.
125         *
126         * @param dataset  the dataset (<code>null</code> not permitted).
127         * @param series  the series (zero-based index).
128         * @param item  the item (zero-based index).
129         *
130         * @return The items (never <code>null</code>).
131         */
132        protected Object[] createItemArray(XYDataset dataset, int series, 
133                                           int item) {
134            Object[] result = new Object[8];
135            result[0] = dataset.getSeriesKey(series).toString();
136            Number x = dataset.getX(series, item);
137            if (getXDateFormat() != null) {
138                result[1] = getXDateFormat().format(new Date(x.longValue()));   
139            }
140            else {
141                result[1] = getXFormat().format(x);
142            }
143            NumberFormat formatter = getYFormat();
144            
145            if (dataset instanceof BoxAndWhiskerXYDataset) {
146                BoxAndWhiskerXYDataset d = (BoxAndWhiskerXYDataset) dataset;
147                result[2] = formatter.format(d.getMeanValue(series, item));
148                result[3] = formatter.format(d.getMedianValue(series, item));
149                result[4] = formatter.format(d.getMinRegularValue(series, item));
150                result[5] = formatter.format(d.getMaxRegularValue(series, item));
151                result[6] = formatter.format(d.getQ1Value(series, item));
152                result[7] = formatter.format(d.getQ3Value(series, item));
153            }
154            return result;
155        }
156    
157        /**
158         * Tests if this object is equal to another.
159         *
160         * @param obj  the other object.
161         *
162         * @return A boolean.
163         */
164        public boolean equals(Object obj) {
165            if (obj == this) {
166                return true;
167            }
168            if (!(obj instanceof BoxAndWhiskerXYToolTipGenerator)) {
169                return false;
170            }
171            return super.equals(obj);
172        }
173        
174    }