132 lines
5.3 KiB
Text
132 lines
5.3 KiB
Text
/*************************************************************************
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*
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* OpenOffice.org - a multi-platform office productivity suite
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*
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* $RCSfile: XAggregation.idl,v $
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*
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* $Revision: 1.11 $
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*
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* last change: $Author: rt $ $Date: 2005-09-09 16:33:43 $
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*
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* The Contents of this file are made available subject to
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* the terms of GNU Lesser General Public License Version 2.1.
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*
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*
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* GNU Lesser General Public License Version 2.1
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* =============================================
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* Copyright 2005 by Sun Microsystems, Inc.
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* 901 San Antonio Road, Palo Alto, CA 94303, USA
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License version 2.1, as published by the Free Software Foundation.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*
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************************************************************************/
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#ifndef __com_sun_star_uno_XAggregation_idl__
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#define __com_sun_star_uno_XAggregation_idl__
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#ifndef __com_sun_star_uno_XInterface_idl__
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#include <com/sun/star/uno/XInterface.idl>
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#endif
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//=============================================================================
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module com { module sun { module star { module uno {
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//=============================================================================
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/** Objects which implement this interface can become aggregates of
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a delegator.
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<p>That means if an object "A" aggregates "B", "A" can provide all
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or some of the interfaces of "B". Whenever the method
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<member>XInterface::queryInterface()</member>
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is called on either of the objects, the call will be forwarded
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to object "A". Object "A" now can determine whether to use the
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interfaces of "A" or "B" or neither. Actually, any number of
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aggregates can be used, even nested ones (aggregated objects which are
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delegators by themselves).
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<p>The following rules are to be observed:
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<ol>
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<li>All calls to <member>XInterface::acquire()</member>
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which are made before the delegator was set (using the method
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<member>XAggregation::setDelegator()</member>) must not be taken back
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(using the method <member>XInterface::release()</member>)
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before the delegation is removed by calling
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<code>xAggregation->setDelegator(NULL)</code>.
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<li>The constructor of a delegator has to increment its
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own reference count by calling its method
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<member>XInterface::acquire()</member>
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before it sets itself to any aggregate using the method
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<member>XAggregation::setDelegator()</member>. After that
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call it has to reset its own reference count without the
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destructor getting called.
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<li>The destructor of a delegator has to reset the delegator in
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its aggregated objects by calling their method
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<member>XAggregation::setDelegator()</member> with
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<const>NULL</const> before it releases its reference to
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its aggregated objects.
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</ol>
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@deprecated
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Aggregation will no longer be supported as a high-level concept of UNO.
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You may still have the option to implement an UNO object consisting of
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several single objects in your specific programming language, though this
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depends on your programming language.
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*/
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published interface XAggregation: com::sun::star::uno::XInterface
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{
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//-------------------------------------------------------------------------
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/** sets the object to which all calls to the method
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<member>XInterface::queryInterface()</member>
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have to be forwarded. @
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@param xDelegator
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specifies the object which handles the calls to
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<member>XInterface::queryInterface()</member>.
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If <var>xDelegator</var> is <const>NULL</const>, the delegator is
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removed and thus the object becomes its own delegator and has
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to handle calls to the method
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<member>XInterface::queryInterface()</member>
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itself.
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@see XAggregation::queryAggregation
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*/
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void setDelegator( [in] com::sun::star::uno::XInterface pDelegator );
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//-------------------------------------------------------------------------
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/** is similar to <member>XInterface::queryInterface()</member>,
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but it is to be processed directly without being forwarded to the
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delegator. @
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<p>This method is only called from within an implementation of
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<member>XInterface::queryInterface()</member>
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or <member>XAggregation::queryAggregation()</member>. This method
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is to be called by the delegator if it does not implement the
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interface itself. An object which got aggregated cannot depend
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on getting its own interface when it calls the method
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<member>XInterface::queryInterface()</member>.
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@see XAggregation::setDelegator
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*/
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any queryAggregation( [in] type aType );
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};
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//=============================================================================
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}; }; }; };
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#endif
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