org.jfree.chart3d.label.CategoryItemLabelGenerator Maven / Gradle / Ivy

/* ===========================================================
 * Orson Charts : a 3D chart library for the Java(tm) platform
 * ===========================================================
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 * (C)opyright 2013-2020, by Object Refinery Limited.  All rights reserved.
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 * https://github.com/jfree/orson-charts
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 * the Free Software Foundation, either version 3 of the License, or
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 * This program is distributed in the hope that it will be useful,
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 * GNU General Public License for more details.
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package org.jfree.chart3d.label;

import org.jfree.chart3d.data.category.CategoryDataset3D;

/**
 * An item label generator for category charts (this is used for tooltips and
 * data item labels).  Note that this generator is used for individual data
 * items, and is distinct from the {@link CategoryLabelGenerator} which
 * generates labels for series keys, column keys and row keys.  
 * The {@link StandardCategoryItemLabelGenerator} class provides the default 
 * implementation.
 * 
 * @since 1.3
 */
public interface CategoryItemLabelGenerator {

    /**
     * Generates a label for one series in a {@link CategoryDataset3D}.
     * 
     * @param dataset  the dataset ({@code null} not permitted).
     * @param seriesKey  the series key ({@code null} not permitted).
     * @param rowKey  the row key ({@code null} not permitted).
     * @param columnKey  the column key ({@code null} not permitted).
     * 
     * @return The series label (possibly {@code null}).
     */
    String generateItemLabel(CategoryDataset3D dataset, 
            Comparable seriesKey, Comparable rowKey, 
            Comparable columnKey);

}