/* ===========================================================
* JFreeChart : a free chart library for the Java(tm) platform
* ===========================================================
*
* (C) Copyright 2000-2012, by Object Refinery Limited and Contributors.
*
* Project Info: http://www.jfree.org/jfreechart/index.html
*
* This library is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; either version 2.1 of the License, or
* (at your option) any later version.
*
* This library is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
* License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
* USA.
*
* [Oracle and Java are registered trademarks of Oracle and/or its affiliates.
* Other names may be trademarks of their respective owners.]
*
* --------------------------------
* StandardPieToolTipGenerator.java
* --------------------------------
* (C) Copyright 2001-2012, by Object Refinery Limited.
*
* Original Author: David Gilbert (for Object Refinery Limited);
* Contributor(s): Richard Atkinson;
* Andreas Schroeder;
*
* Changes
* -------
* 13-Dec-2001 : Version 1 (DG);
* 16-Jan-2002 : Completed Javadocs (DG);
* 29-Aug-2002 : Changed to format numbers using default locale (RA);
* 26-Sep-2002 : Fixed errors reported by Checkstyle (DG);
* 30-Oct-2002 : Changed PieToolTipGenerator interface (DG);
* 21-Mar-2003 : Implemented Serializable (DG);
* 13-Aug-2003 : Implemented Cloneable (DG);
* 19-Aug-2003 : Renamed StandardPieToolTipGenerator -->
* StandardPieItemLabelGenerator (DG);
* 10-Mar-2004 : Modified to use MessageFormat class (DG);
* 31-Mar-2004 : Added javadocs for the MessageFormat usage (AS);
* 15-Apr-2004 : Split PieItemLabelGenerator interface into
* PieSectionLabelGenerator and PieToolTipGenerator (DG);
* 25-Nov-2004 : Moved some code into abstract super class (DG);
* 29-Jul-2005 : Removed implementation of PieSectionLabelGenerator
* interface (DG);
* 10-Jul-2007 : Added constructors with locale argument (DG);
* 17-Jun-2012 : Removed JCommon dependencies (DG);
*
*/
package org.jfree.chart.labels;
import java.io.Serializable;
import java.text.NumberFormat;
import java.util.Locale;
import org.jfree.chart.util.PublicCloneable;
import org.jfree.data.general.PieDataset;
/**
* A standard item label generator for plots that use data from a
* {@link PieDataset}.
* <p>
* For the label format, use {0} where the pie section key should be inserted,
* {1} for the absolute section value and {2} for the percent amount of the pie
* section, e.g. <code>"{0} = {1} ({2})"</code> will display as
* <code>apple = 120 (5%)</code>.
*/
public class StandardPieToolTipGenerator extends AbstractPieItemLabelGenerator
implements PieToolTipGenerator, Cloneable, PublicCloneable,
Serializable {
/** For serialization. */
private static final long serialVersionUID = 2995304200445733779L;
/** The default tooltip format. */
public static final String DEFAULT_TOOLTIP_FORMAT = "{0}: ({1}, {2})";
/**
* Creates an item label generator using default number formatters.
*/
public StandardPieToolTipGenerator() {
this(DEFAULT_TOOLTIP_FORMAT);
}
/**
* Creates a pie tool tip generator for the specified locale, using the
* default format string.
*
* @param locale the locale (<code>null</code> not permitted).
*
* @since 1.0.7
*/
public StandardPieToolTipGenerator(Locale locale) {
this(DEFAULT_TOOLTIP_FORMAT, locale);
}
/**
* Creates a pie tool tip generator for the default locale.
*
* @param labelFormat the label format (<code>null</code> not permitted).
*/
public StandardPieToolTipGenerator(String labelFormat) {
this(labelFormat, Locale.getDefault());
}
/**
* Creates a pie tool tip generator for the specified locale.
*
* @param labelFormat the label format (<code>null</code> not permitted).
* @param locale the locale (<code>null</code> not permitted).
*
* @since 1.0.7
*/
public StandardPieToolTipGenerator(String labelFormat, Locale locale) {
this(labelFormat, NumberFormat.getNumberInstance(locale),
NumberFormat.getPercentInstance(locale));
}
/**
* Creates an item label generator using the specified number formatters.
*
* @param labelFormat the label format string (<code>null</code> not
* permitted).
* @param numberFormat the format object for the values (<code>null</code>
* not permitted).
* @param percentFormat the format object for the percentages
* (<code>null</code> not permitted).
*/
public StandardPieToolTipGenerator(String labelFormat,
NumberFormat numberFormat, NumberFormat percentFormat) {
super(labelFormat, numberFormat, percentFormat);
}
/**
* Generates a tool tip text item for one section in a pie chart.
*
* @param dataset the dataset (<code>null</code> not permitted).
* @param key the section key (<code>null</code> not permitted).
*
* @return The tool tip text (possibly <code>null</code>).
*/
@Override
public String generateToolTip(PieDataset dataset, Comparable key) {
return generateSectionLabel(dataset, key);
}
/**
* Returns an independent copy of the generator.
*
* @return A clone.
*
* @throws CloneNotSupportedException should not happen.
*/
@Override
public Object clone() throws CloneNotSupportedException {
return super.clone();
}
}