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/*
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* Copyright (c) 2007-2009 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 the License "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:
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*
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*/
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/**
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@file
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@internalComponent
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@released
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*/
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#ifndef PLUGINMANAGER_H
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#define PLUGINMANAGER_H
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namespace UserPromptService
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{
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class CPolicyEvaluator;
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class CDialogCreator;
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class CPolicyEvaluatorPlugin;
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class CDialogCreatorPlugin;
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class CPluginManager;
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/**
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Container class for a plug-in that notifies a manager object when
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it is destroyed.
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*/
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template <class T>
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class CPlugin : public CBase
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{
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public:
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CPlugin(CPluginManager* aManager, T* aImp);
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T& Imp();
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~CPlugin();
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private:
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CPluginManager* iManager; ///< The plug-in manager that tracks active plug-ins.
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T* iImp; ///< The policy evaluator or dialog creator owned by this object.
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};
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/**
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Plug-in manager that tracks the number of plug-ins enabling REComSession::FinalClose()
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to be deferred (after calling Unload) once all the plug-ins have been unloaded.
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N.B. REComSession::FinalClose CANNOT be called from within an ECOM plug-in.
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*/
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NONSHARABLE_CLASS(CPluginManager) : public CBase
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{
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template <class T> friend class CPlugin;
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public:
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IMPORT_C static CPluginManager* NewL();
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IMPORT_C CPlugin<CPolicyEvaluator>* CreateEvaluatorL(const TUid& aEvaluatorId);
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IMPORT_C CPlugin<CDialogCreator>* CreateDialogCreatorL(const TUid& aDialogCreatorId);
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IMPORT_C void Unload();
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~CPluginManager();
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public:
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// For testing. Do not modify directly
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TInt iPluginCount; ///< The number of active CPlugin objects. (do not modify)
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private:
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CPluginManager();
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IMPORT_C void ReleasePlugin();
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TBool iUnload; ///< Indicates that a deferred call to REComSession::FinalClose is required
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};
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template <class T>
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inline CPlugin<T>::CPlugin(CPluginManager* aManager, T* aImp) : iManager(aManager), iImp(aImp)
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/**
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Constructor
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@param aManager The plug-in manager that tracks the number of plug-ins in existance.
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@param aImp The ECOM implementation that this class managers.
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*/
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{
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}
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template <class T>
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inline T& CPlugin<T>::Imp()
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/**
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Gets a reference to the plug-in implementation
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@return The plug-in implementation.
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*/
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{
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return *iImp;
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}
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template <class T>
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inline CPlugin<T>::~CPlugin()
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/**
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Destructor
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*/
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{
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delete iImp;
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iManager->ReleasePlugin();
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}
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}
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#endif // PLUGINMANAGER_H
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