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/*************************************************************************
*
* $RCSfile: XWeak.idl,v $
*
* $Revision: 1.6 $
*
* last change: $Author: mi $ $Date: 2001-11-20 10:20:42 $
*
* The Contents of this file are made available subject to the terms of
* either of the following licenses
*
* - GNU Lesser General Public License Version 2.1
* - Sun Industry Standards Source License Version 1.1
*
* Sun Microsystems Inc., October, 2000
*
* GNU Lesser General Public License Version 2.1
* =============================================
* Copyright 2000 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
*
*
* Sun Industry Standards Source License Version 1.1
* =================================================
* The contents of this file are subject to the Sun Industry Standards
* Source License Version 1.1 (the "License"); You may not use this file
* except in compliance with the License. You may obtain a copy of the
* License at http://www.openoffice.org/license.html.
*
* Software provided under this License is provided on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING,
* WITHOUT LIMITATION, WARRANTIES THAT THE SOFTWARE IS FREE OF DEFECTS,
* MERCHANTABLE, FIT FOR A PARTICULAR PURPOSE, OR NON-INFRINGING.
* See the License for the specific provisions governing your rights and
* obligations concerning the Software.
*
* The Initial Developer of the Original Code is: Sun Microsystems, Inc.
*
* Copyright: 2000 by Sun Microsystems, Inc.
*
* All Rights Reserved.
*
* Contributor(s): _______________________________________
*
*
************************************************************************/
#ifndef __com_sun_star_uno_XWeak_idl__
#define __com_sun_star_uno_XWeak_idl__
#ifndef __com_sun_star_uno_XInterface_idl__
#include <com/sun/star/uno/XInterface.idl>
#endif
#ifndef __com_sun_star_uno_XAdapter_idl__
#include <com/sun/star/uno/XAdapter.idl>
#endif
//=============================================================================
module com { module sun { module star { module uno {
//=============================================================================
// DocMerge from xml: interface com::sun::star::uno::XWeak
/** the server-side interface to a weak object.
<p>This interface is proxy to the adapted object.
In order to make it possible to have weak references to objects,
the <type>XAdapter</type> interface must be implemented to provide
a weak adapter for the clients.
<h4>Concept of weak referencing:</h4>
</p>
<p>This module specifies the interfaces for implementing and using
weak references.</p>
<p>
</p>
<p>The sense of weak references is to hold a reference to an object
without affecting the lifetime of the object. That means that a weak
reference may become invalid, at any time, if the referenced object dies.
</p>
<p>The following interfaces describe one way to handle weak references
by providing a weak adapter. The weak object has to provide this
adapter if anyone wants to hold a weak reference. To separate their
lifetimes, the adapter and the original object must not share the same
reference counter. The weak reference is in fact only a hard reference
to the adapter, which knows - but does not hold - the original object.
That means that the implementation and synchronization of weak
referencing is the responsibility of the object. The following
interfaces are involved in the concept of weak referencing:
<dl>
<dt>
<type>XWeak</type>
</dt>
<dd>is the server-side interface of the referred object. This
referred object must support the <type>XAdapter</type> interface.
</dd>
<dt>
<type>XReference</type>
</dt>
<dd>is a client-side interface which must be implemented by
the holder of any weak reference. It is used for notification
when the adapted object dies.
</dd>
</dl>
</p>
*/
interface XWeak: com::sun::star::uno::XInterface
{
//-------------------------------------------------------------------------
// DocMerge from xml: method com::sun::star::uno::XWeak::queryAdapter
/** queries the weak adapter.
<p>It is important that the adapter must know, but not hold
the adapted object. If the adapted object dies, all references
to the adapter have to be notified to release the adapter.
</p>
*/
com::sun::star::uno::XAdapter queryAdapter();
};
//=============================================================================
}; }; }; };
/*=============================================================================
$Log: not supported by cvs2svn $
Revision 1.5 2001/03/16 15:10:43 jsc
remove interfaceheader with uik and remove [const] in method definitions
Revision 1.4 2000/11/08 12:29:00 mi
moved from api
Revision 1.1.1.1 2000/09/18 23:36:18 hjs
initial import
Revision 1.3 2000/09/11 11:53:04 mi
documentation merged from XML
Revision 1.1.1.1 1999/11/11 09:48:46 jsc
new
=============================================================================*/
#endif
|
