1 /* =========================================================== 2 * JFreeChart : a free chart library for the Java(tm) platform 3 * =========================================================== 4 * 5 * (C) Copyright 2000-2013, by Object Refinery Limited and Contributors. 6 * 7 * Project Info: http://www.jfree.org/jfreechart/index.html 8 * 9 * This library is free software; you can redistribute it and/or modify it 10 * under the terms of the GNU Lesser General Public License as published by 11 * the Free Software Foundation; either version 2.1 of the License, or 12 * (at your option) any later version. 13 * 14 * This library is distributed in the hope that it will be useful, but 15 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 16 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public 17 * License for more details. 18 * 19 * You should have received a copy of the GNU Lesser General Public 20 * License along with this library; if not, write to the Free Software 21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, 22 * USA. 23 * 24 * [Oracle and Java are registered trademarks of Oracle and/or its affiliates. 25 * Other names may be trademarks of their respective owners.] 26 * 27 * --------------------- 28 * LegendItemSource.java 29 * --------------------- 30 * (C) Copyright 2005-2008, by Object Refinery Limited and Contributors. 31 * 32 * Original Author: David Gilbert (for Object Refinery Limited); 33 * Contributor(s): -; 34 * 35 * Changes 36 * ------- 37 * 23-Feb-2005 : Version 1 (DG); 38 * 39 */ 40 41 package org.jfree.chart; 42 43 /** 44 * A source of legend items. A {@link org.jfree.chart.title.LegendTitle} will 45 * maintain a list of sources (often just one) from which it obtains legend 46 * items. 47 */ 48 public interface LegendItemSource { 49 50 /** 51 * Returns a (possibly empty) collection of legend items. 52 * 53 * @return The legend item collection (never <code>null</code>). 54 */ getLegendItems()55 public LegendItemCollection getLegendItems(); 56 57 } 58