/* Copyright (c) 2005 Stanford University and Christopher Bruns
 * 
 * Permission is hereby granted, free of charge, to any person obtaining
 * a copy of this software and associated documentation files (the
 * "Software"), to deal in the Software without restriction, including 
 * without limitation the rights to use, copy, modify, merge, publish, 
 * distribute, sublicense, and/or sell copies of the Software, and to
 * permit persons to whom the Software is furnished to do so, subject
 * to the following conditions:
 * 
 * The above copyright notice and this permission notice shall be included 
 * in all copies or substantial portions of the Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
 * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
 * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */

/*
 * Created on May 19, 2006
 * Original author: Christopher Bruns
 */
package org.simtk.isimsu;

import java.util.*;

public class SaltSelectionObservableClass 
implements SaltSelectionObservable
{
    private HashSet<SaltSelectionListener> saltSelectionListeners =
        new HashSet<SaltSelectionListener>();

    public synchronized void addSaltSelectionListener(SaltSelectionListener listener) {
        saltSelectionListeners.add(listener);
    }

    public synchronized void removeSaltSelectionListener(SaltSelectionListener listener) {
        saltSelectionListeners.remove(listener);
    }
    
    public void selectSalt(SaltSelectionObservable source, 
            SaltCondition salt) {
        fireSaltSelected(source, salt);
    }
    
    private void fireSaltSelected(SaltSelectionObservable source, 
            SaltCondition salt) {
        Set<SaltSelectionListener> sl;
        synchronized(this) {
            sl = (Set<SaltSelectionListener>) saltSelectionListeners.clone();
        }
        
        int size = sl.size();
        if (size == 0) return;
        
        SaltSelectionEvent event = new SaltSelectionEvent(source, salt);
        for (SaltSelectionListener listener : saltSelectionListeners) {
            listener.saltSelected(event);
        }
    }
    
}