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/*
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* Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).
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* All rights reserved.
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* This component and the accompanying materials are made available
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* under the terms of "Eclipse Public License v1.0"
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* which accompanies this distribution, and is available
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* at the URL "http://www.eclipse.org/legal/epl-v10.html".
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*
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* Initial Contributors:
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* Nokia Corporation - initial contribution.
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*
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* Contributors:
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*
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* Description: HsService base
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*
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*/
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#ifndef SERVICEBASE_H
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#define SERVICEBASE_H
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struct HsServiceInterfaceId;
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/** @ingroup group_hsservicemodel group_service_api_candidates
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* The base class for service interfaces
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*
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* @lib
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* @since S60 ?S60_version
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*/
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class IHsServiceBase
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{
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public:
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/**
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* Default virtual destructor.
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*/
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virtual ~IHsServiceBase() {}
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/**
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* Interface getter with casting.
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*
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* @since S60 ?S60_version
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* @param aBase HsService base object.
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* @return The queried interface, or NULL if the interface is not
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* supported or available.
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*/
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template <class T>
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static T* MakeInterface(IHsServiceBase* aBase)
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{
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return (aBase? static_cast<T*>(aBase->resolveService(T::type())): 0);
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}
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/**
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* Interface getter.
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* Derived classes should always call the base class method
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* from the overridden MakeInterface.
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*
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* @since S60 ?S60_version
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* @param aType The type id of the queried interface.
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* @return The queried interface, or NULL if the interface is not
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* supported or available.
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*/
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virtual IHsServiceBase* resolveService( const HsServiceInterfaceId &aType ) = 0;
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};
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#endif
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