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/*************************************************************************
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* Copyright 2000, 2010 Oracle and/or its affiliates.
*
* OpenOffice.org - a multi-platform office productivity suite
*
* This file is part of OpenOffice.org.
*
* OpenOffice.org is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License version 3
* only, as published by the Free Software Foundation.
*
* OpenOffice.org 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 version 3 for more details
* (a copy is included in the LICENSE file that accompanied this code).
*
* You should have received a copy of the GNU Lesser General Public License
* version 3 along with OpenOffice.org. If not, see
* <http://www.openoffice.org/license.html>
* for a copy of the LGPLv3 License.
*
************************************************************************/
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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