/*
* MapFacade.java
* Copyright 2012 Connor Petty <cpmeister@users.sourceforge.net>
*
* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* Created on Mar 11, 2012, 3:46:59 PM
*/
package pcgen.facade.util;
import java.util.Set;
import pcgen.facade.util.event.MapListener;
/**
*
* @author Connor Petty <cpmeister@users.sourceforge.net>
*/
public interface MapFacade<K, V>
{
void addMapListener(MapListener<? super K, ? super V> listener);
void removeMapListener(MapListener<? super K, ? super V> listener);
/**
* returns a list of the keys in this map. This list is
* backed by the map and will be updated alongside
* map events.
* @return a list containing the map's keys
*/
Set<K> getKeys();
V getValue(K key);
int getSize();
/**
* tests whether the map has a value with the given key
* @param key
* @return true if a key is found, false otherwise
*/
boolean containsKey(K key);
/**
* Note: This is shorthand for (getSize() == 0)
* @return whether this list is empty
*/
boolean isEmpty();
}