001/* ===========================================================
002 * Orson Charts : a 3D chart library for the Java(tm) platform
003 * ===========================================================
004 * 
005 * (C)opyright 2013-2022, by David Gilbert.  All rights reserved.
006 * 
007 * https://github.com/jfree/orson-charts
008 * 
009 * This program is free software: you can redistribute it and/or modify
010 * it under the terms of the GNU General Public License as published by
011 * the Free Software Foundation, either version 3 of the License, or
012 * (at your option) any later version.
013 *
014 * This program is distributed in the hope that it will be useful,
015 * but WITHOUT ANY WARRANTY; without even the implied warranty of
016 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
017 * GNU General Public License for more details.
018 *
019 * You should have received a copy of the GNU General Public License
020 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
021 * 
022 * [Oracle and Java are registered trademarks of Oracle and/or its affiliates. 
023 * Other names may be trademarks of their respective owners.]
024 * 
025 * If you do not wish to be bound by the terms of the GPL, an alternative
026 * commercial license can be purchased.  For details, please see visit the
027 * Orson Charts home page:
028 * 
029 * http://www.object-refinery.com/orsoncharts/index.html
030 * 
031 */
032
033package org.jfree.chart3d.style;
034
035import java.util.EventObject;
036
037import org.jfree.chart3d.internal.Args;
038
039/**
040 * An event that signals a change to a {@link ChartStyle}.
041 * <br><br>
042 * NOTE: This class is serializable, but the serialization format is subject 
043 * to change in future releases and should not be relied upon for persisting 
044 * instances of this class.
045 * 
046 * @since 1.2
047 */
048@SuppressWarnings("serial")
049public class ChartStyleChangeEvent extends EventObject {
050
051    private ChartStyle style;
052  
053    /**
054     * Creates a new event.
055     * 
056     * @param style  the style ({@code null} not permitted). 
057     */
058    public ChartStyleChangeEvent(ChartStyle style) {
059        this(style, style);
060    }
061    
062    /**
063     * Creates a new event.
064     * 
065     * @param source  the source.
066     * @param style  the style ({@code null} not permitted).
067     */
068    public ChartStyleChangeEvent(Object source, ChartStyle style) {
069        super(source);
070        Args.nullNotPermitted(style, "style");
071        this.style = style;
072    }
073  
074    /**
075     * Returns the chart style that this event is associated with.
076     * 
077     * @return The style (never {@code null}). 
078     */
079    public ChartStyle getChartStyle () {
080        return this.style;
081    }
082    
083}