/*

* Copyright (c) 2002 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: 

*       Logs.app global variables. A singleton class.

*

*/

#ifndef CLogsViewGlobals_H

#define CLogsViewGlobals_H

//  INCLUDES

#include <e32base.h>

#include "MLogsExtensionFactory.h"

// FORWARD DECLARATIONS

class CLogsExtensionLoader;

// CLASS DECLARATION

/**

 * Logs.app global variables. A singleton class.

 */

class CLogsViewGlobals : private CBase

    {

    public: // Constructors and destructor

        /**

         * Returns the singleton CLogsViewGlobals instance. If no instance

		 * exists yet it is created.

         */

        static CLogsViewGlobals* InstanceL();

		/**

		 * Pushes this object on to the cleanup stack.

		 */

		void PushL();

    public: // New functions

		/**

		 * Returns view extension factory. If no instance exists yet it is 

		 * created.

		 */

		MLogsExtensionFactory& ExtensionFactoryL();

    private: // Interface for Release(CLogsViewGlobals*)

		friend void Release(CLogsViewGlobals*);

        virtual void DoRelease();

		static void CleanupRelease(TAny* aObj);

    private:  // Implementation

        CLogsViewGlobals();

        void ConstructL();

        static CLogsViewGlobals* NewLC();

        ~CLogsViewGlobals();

        void IncRef();

        TInt DecRef();

        TInt RefCount();

    private:  // Data

        /// Own: reference count for InstanceL calls

        TInt iRefCount;

        /// Own: for loading dll and getting extension factory

        CLogsExtensionLoader* iLoader;

        //

        //Static pointer to singleton instance of this class

    public:        

        static CLogsViewGlobals* singleThis;

    };

// INLINE FUNCTIONS

inline void CLogsViewGlobals::PushL()

	{

    CleanupStack::PushL(TCleanupItem(CleanupRelease,this)); 

	}

inline void Release(CLogsViewGlobals* aObj)

	{

	if (aObj)

		{

		aObj->DoRelease();

		}

	}

inline void CLogsViewGlobals::CleanupRelease(TAny* aObj)

    { 

    Release(static_cast<CLogsViewGlobals*>(aObj)); 

    }

#endif

// End of File