001/* ===========================================================
002 * JFreeChart : a free chart library for the Java(tm) platform
003 * ===========================================================
004 *
005 * (C) Copyright 2000-present, by David Gilbert 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 * ChartTheme.java
029 * ---------------
030 * (C) Copyright 2008-present, by David Gilbert.
031 *
032 * Original Author:  David Gilbert;
033 * Contributor(s):   -;
034 *
035 */
036
037package org.jfree.chart;
038
039/**
040 * A {@link ChartTheme} a class that can apply a style or 'theme' to a chart.
041 * It can be implemented in an arbitrary manner, with the styling applied to
042 * the chart via the {@code apply(JFreeChart)} method.  We provide one
043 * implementation ({@link StandardChartTheme}) that just mimics the manual
044 * process of calling methods to set various chart parameters.
045 */
046public interface ChartTheme {
047
048    /**
049     * Applies this theme to the supplied chart.
050     *
051     * @param chart  the chart ({@code null} not permitted).
052     */
053    void apply(JFreeChart chart);
054
055}