/*

* Copyright (c) 2006 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:  Templated algorithms to simplify object handling

*

*/

#ifndef PRESENCEOBJECTHELPERS_H

#define PRESENCEOBJECTHELPERS_H

#include <s32mem.h>

class MPresenceBuddyInfo2;

// const TInt KObjectBufGranurality = 100;

class TPresenceArrayPacker

    {

public:

    /**

     * Pack array of buffers to buffer.

     * @param aBufferArray Array of buffers to pack.

     * @return Buffer containing buffers.

     */

    IMPORT_C static HBufC8* PackArrayL( const RPointerArray< MPresenceBuddyInfo2 >& aBufferArray );

    /**

     * Unpack array of buffers to array.

     * @param aBufferArray. Target array for new buffers. Ownhersip of items in array is transferred to caller.

     * @param aPack Packet containing array of buffers.

     */

    IMPORT_C static void UnPackArrayL( RPointerArray< MPresenceBuddyInfo2 >& aBufferArray, const TDesC8& aPack  );

    };

class PresenceCacheBuddyUtils

    {

public:

    /**

     * Reset buddy info expiry time stamp

     */

    IMPORT_C static void ResetBuddyInfoTimeStamp(MPresenceBuddyInfo2& aBuddy);

    /**

     * Check is buddy info expired

     */

    IMPORT_C static TBool IsBuddyInfoExpired(const MPresenceBuddyInfo2& aBuddy);

private:

    // Hide constructor and destructor

    PresenceCacheBuddyUtils();

    ~PresenceCacheBuddyUtils();

    };

// CleanupStack helpers for item owning RPointerArrays

template <class T>

class CleanupResetAndDestroy

    {

public:

    inline static void PushL(T& aRef)

        { CleanupStack::PushL(TCleanupItem(&ResetAndDestroy,&aRef)); }

private:

    inline static void ResetAndDestroy(TAny *aPtr)

        { static_cast<T*>(aPtr)->ResetAndDestroy(); }

    };

template <class T>

inline void CleanupResetAndDestroyPushL(T& aRef)

    { CleanupResetAndDestroy<T>::PushL(aRef); }

#endif // PRESENCEOBJECTHELPERS_H