diff -r 000000000000 -r 5d03bc08d59c graphicsutils/commongraphicsheaders/inc/extensioncontainer.h --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/graphicsutils/commongraphicsheaders/inc/extensioncontainer.h Tue Feb 02 01:47:50 2010 +0200 @@ -0,0 +1,56 @@ +// Copyright (c) 1995-2009 Nokia Corporation and/or its subsidiary(-ies). +// All rights reserved. +// This component and the accompanying materials are made available +// under the terms of "Eclipse Public License v1.0" +// which accompanies this distribution, and is available +// at the URL "http://www.eclipse.org/legal/epl-v10.html". +// +// Initial Contributors: +// Nokia Corporation - initial contribution. +// +// Contributors: +// +// Description: +// + +#ifndef EXTENSIONCONTAINER_H_ +#define EXTENSIONCONTAINER_H_ + +class CExtensionContainer:public CBase + { +public: + /** Get Extension Interface. + * Implemented using the CBase::Extension_() mechanism + * Note that the pointer returned is only good for the lifetime of the called CBase derived object. + * @param aExtensionId The GUID/ Well-known ID of the interface + * @return pointer to the interface or NULL if not available + **/ + inline TAny* GetInterface(TUint aExtensionId); + /** Get Extension Interface - templated helper. + * Resolves the ID and returned pointer based on the class name. + * Note that the pointer returned is only good for the lifetime of the called CBase derived object. + * Class name should support ETypeId intergral value, else use non-template version. + * @param MClass The class of the interface with embedded GUID / Well known ID + * @return pointer to the interface or NULL if not available + **/ + template MClass* GetInterface() + { + return static_cast(GetInterface(MClass::ETypeId)); + } + }; + +inline TAny* CExtensionContainer::GetInterface(TUint aExtensionId) + { + TAny* retVal=NULL; + //Note that extension is intentionally not overloaded in CExtensionContainer + if (this->Extension_(aExtensionId,retVal,NULL)