    001    /* ===========================================================
    002     * JFreeChart : a free chart library for the Java(tm) platform
    003     * ===========================================================
    004     *
    005     * (C) Copyright 2000-2011, 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     * [Oracle and Java are registered trademarks of Oracle and/or its affiliates.
    025     * Other names may be trademarks of their respective owners.]
    026     *
    027     * ---------------------------
    028     * XYSeriesLabelGenerator.java
    029     * ---------------------------
    030     * (C) Copyright 2004-2008, by Object Refinery Limited.
    031     *
    032     * Original Author:  David Gilbert (for Object Refinery Limited);
    033     * Contributor(s):   -;
    034     *
    035     * Changes
    036     * -------
    037     * 16-Nov-2004 : Version 1 (DG);
    038     * ------------- JFREECHART 1.0.x ---------------------------------------------
    039     * 24-Nov-2006 : Updated API docs (DG);
    040     *
    041     */
    042
    043    package org.jfree.chart.labels;
    044
    045    import org.jfree.data.xy.XYDataset;
    046
    047    /**
    048     * A generator that creates labels for the series in an {@link XYDataset}.
    049     * <P>
    050     * Classes that implement this interface should be either (a) immutable, or
    051     * (b) cloneable via the <code>PublicCloneable</code> interface (defined in
    052     * the JCommon class library).  This provides a mechanism for the referring
    053     * renderer to clone the generator if necessary.
    054     */
    055    public interface XYSeriesLabelGenerator {
    056
    057        /**
    058         * Generates a label for the specified series.  This label will be
    059         * used for the chart legend.
    060         *
    061         * @param dataset  the dataset (<code>null</code> not permitted).
    062         * @param series  the series.
    063         *
    064         * @return A series label.
    065         */
    066        public String generateLabel(XYDataset dataset, int series);
    067
    068    }