com.mchange.v1.util.SomethingChangedEventSupport Maven / Gradle / Ivy
/*
* Distributed as part of mchange-commons-java v.0.2.3
*
* Copyright (C) 2012 Machinery For Change, Inc.
*
* Author: Steve Waldman
*
* This library is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License version 2.1, as
* published by the Free Software Foundation.
*
* This software 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 software; see the file LICENSE. If not, write to the
* Free Software Foundation, Inc., 59 Temple Place, Suite 330,
* Boston, MA 02111-1307, USA.
*/
package com.mchange.v1.util;
import java.util.*;
public class SomethingChangedEventSupport
{
Object source;
Vector listeners = new Vector();
public SomethingChangedEventSupport(Object source)
{this.source = source;}
public synchronized void addSomethingChangedListener(SomethingChangedListener mlistener)
{
if (! listeners.contains(mlistener))
listeners.addElement(mlistener);
}
public synchronized void removeSomethingChangedListener(SomethingChangedListener mlistener)
{listeners.removeElement(mlistener);}
public synchronized void fireSomethingChanged()
{
SomethingChangedEvent ae = new SomethingChangedEvent(source);
for (Enumeration e = listeners.elements(); e.hasMoreElements();)
{
SomethingChangedListener al = (SomethingChangedListener) e.nextElement();
al.somethingChanged(ae);
}
}
}