/* ===========================================================
* JFreeChart : a free chart library for the Java(tm) platform
* ===========================================================
*
* (C) Copyright 2000-2013, by Object Refinery Limited and Contributors.
*
* Project Info: http://www.jfree.org/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.
*
* [Oracle and Java are registered trademarks of Oracle and/or its affiliates.
* Other names may be trademarks of their respective owners.]
*
* ---------------
* Annotation.java
* ---------------
* (C) Copyright 2009-2013 by Object Refinery Limited and Contributors.
*
* Original Author: Peter Kolb (see patch 2809117);
* Contributor(s): ;
*
* Changes:
* --------
* 20-Jun-2009 : Version 1 (PK);
*
*/
package org.jfree.chart.annotations;
import org.jfree.chart.event.AnnotationChangeEvent;
import org.jfree.chart.event.AnnotationChangeListener;
/**
* The base interface for annotations. All annotations should support the
* {@link AnnotationChangeEvent} mechanism by allowing listeners to register
* and receive notification of any changes to the annotation.
*/
public interface Annotation {
/**
* Registers an object for notification of changes to the annotation.
*
* @param listener the object to register.
*/
public void addChangeListener(AnnotationChangeListener listener);
/**
* Deregisters an object for notification of changes to the annotation.
*
* @param listener the object to deregister.
*/
public void removeChangeListener(AnnotationChangeListener listener);
}