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jfreechart example source code file (CategoryToolTipGenerator.java)

This example jfreechart source code file (CategoryToolTipGenerator.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - jfreechart tags/keywords

categorytooltipgenerator, categorytooltipgenerator, string, string

The jfreechart CategoryToolTipGenerator.java source code

/* ===========================================================
 * JFreeChart : a free chart library for the Java(tm) platform
 * ===========================================================
 *
 * (C) Copyright 2000-2008, 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.
 *
 * [Java is a trademark or registered trademark of Sun Microsystems, Inc.
 * in the United States and other countries.]
 *
 * -----------------------------
 * CategoryToolTipGenerator.java
 * -----------------------------
 * (C) Copyright 2001-2008, by Object Refinery Limited.
 *
 * Original Author:  David Gilbert (for Object Refinery Limited);
 * Contributor(s):   -;
 *
 * Changes
 * -------
 * 15-Apr-2004 : Separated tool tip method from CategoryItemLabelGenerator
 *               interface (DG);
 *
 */

package org.jfree.chart.labels;

import org.jfree.data.category.CategoryDataset;

/**
 * A <i>category tool tip generator is an object that can be assigned to a
 * {@link org.jfree.chart.renderer.category.CategoryItemRenderer} and that
 * assumes responsibility for creating text items to be used as tooltips for the
 * items in a {@link org.jfree.chart.plot.CategoryPlot}.
 * <p>
 * To assist with cloning charts, classes that implement this interface should
 * also implement the <code>org.jfree.util.PublicCloneable interface (in
 * JCommon).
 */
public interface CategoryToolTipGenerator {

    /**
     * Generates the tool tip text for an item in a dataset.  Note: in the
     * current dataset implementation, each row is a series, and each column
     * contains values for a particular category.
     *
     * @param dataset  the dataset (<code>null not permitted).
     * @param row  the row index (zero-based).
     * @param column  the column index (zero-based).
     *
     * @return The tooltip text (possibly <code>null).
     */
    public String generateToolTip(CategoryDataset dataset, int row, int column);

}

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