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/*************************************************************************
*
* OpenOffice.org - a multi-platform office productivity suite
*
* $RCSfile: DisposeNotifier.java,v $
*
* $Revision: 1.3 $
*
* last change: $Author: rt $ $Date: 2005-09-08 13:20:36 $
*
* The Contents of this file are made available subject to
* the terms of GNU Lesser General Public License Version 2.1.
*
*
* GNU Lesser General Public License Version 2.1
* =============================================
* Copyright 2005 by Sun Microsystems, Inc.
* 901 San Antonio Road, Palo Alto, CA 94303, USA
*
* 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 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
*
************************************************************************/
package com.sun.star.lib.util;
/**
* Optional interface to be implemented by objects stored in a
* <code>WeakMap</code>.
*
* @see WeakMap
*/
public interface DisposeNotifier {
/**
* Adds a dispose listener, to be notified when this object is disposed.
*
* <p>It is unspecified what happens when the same listener is added
* multiple times.</p>
*
* <p>It is unspecified exactly when the <code>notifyDispose</code> callback
* is fired: immediately before the notifier is disposed, while it is in the
* process of disposing, or some time after it got disposed. But even if
* adding a listener to an already disposed notifer, the listener must
* eventually receive a <code>notifyDispose</code> callback.</p>
*
* @param listener a dispose listener, to be notified when this object is
* disposed; must not be <code>null</code>
*/
void addDisposeListener(DisposeListener listener);
}
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