/*
* $Id$
*
* Copyright (c) 2010 by Joel Uckelman
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License (LGPL) as published by the Free Software Foundation.
*
* 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, copies are available
* at http://www.opensource.org.
*/
package VASSAL.tools.concurrent.listener;
import java.util.List;
/**
* An interface to provide support for {@link EventListener}s.
*
* @author Joel Uckelman
* @since 3.2.0
*/
public interface MultiEventListenerSupport {
/**
* Adds an {@link EventListener}.
*
* @param c the class to listen for
* @param l the listener to add
*/
public <T> void addEventListener(Class<T> c, EventListener<? super T> l);
/**
* Removes an {@link EventListener}.
*
* @param c the class to check
* @param l the listener to remove
*/
public <T> void removeEventListener(Class<T> c, EventListener<? super T> l);
/**
* Checks whether there are any {@link EventListener}s.
*
* @param c the class to check
* @return <code>true</code> if there are any listeners for the given class
*/
public boolean hasEventListeners(Class<?> c);
/**
* Gets the list of listerners.
*
* @param c the class to check
* @return the list of listeners for the given class
*/
public <T> List<EventListener<? super T>> getEventListeners(Class<T> c);
/**
* Notify the listeners of an event.
*
* @param event the event to send
*/
public void notify(Object event);
}