/*
* Copyright (C) 2012 Jason Gedge <http://www.gedge.ca>
*
* This file is part of the OpGraph project.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/**
*
*/
package ca.gedge.opgraph.app.util;
/**
* A listener interface for collection-oriented events.
*
* @param <P> the type of the collection element
* @param <E> the type of element stored in the collection
*/
public interface CollectionListener<P, E> {
/**
* Called when an element was added to a collection.
*
* @param source the source object to which this element was added
* @param element the element that was added
*/
public abstract void elementAdded(P source, E element);
/**
* Called when an element was removed from a collection.
*
* @param source the source object from which this element was removed
* @param element the element that was removed
*/
public abstract void elementRemoved(P source, E element);
}