    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     * LegendItemSource.java
    029     * ---------------------
    030     * (C) Copyright 2005, by Object Refinery Limited and Contributors.
    031     *
    032     * Original Author:  David Gilbert (for Object Refinery Limited);
    033     * Contributor(s):   -;
    034     *
    035     * $Id: LegendItemSource.java,v 1.1.2.1 2005/10/25 16:50:20 mungady Exp $
    036     *
    037     * Changes
    038     * -------
    039     * 23-Feb-2005 : Version 1 (DG);
    040     *
    041     */
    042
    043    package org.jfree.chart;
    044
    045    /**
    046     * A source of legend items.  A {@link org.jfree.chart.title.LegendTitle} will
    047     * maintain a list of sources (often just one) from which it obtains legend
    048     * items.
    049     */
    050    public interface LegendItemSource {
    051
    052        /**
    053         * Returns a (possibly empty) collection of legend items.
    054         *
    055         * @return The legend item collection (never <code>null</code>).
    056         */
    057        public LegendItemCollection getLegendItems();
    058
    059    }