/*

* 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: 

*    This is the definition for CDosharedDataBase class.

*

*/

#ifndef __DOSSHAREDDATABASE_H__

#define __DOSSHAREDDATABASE_H__

// INCLUDES

#include "dosservice.h"

//#include <e32base.h>

#include <s32file.h>

// CONSTANTS

//const TInt KSDReserveFileMaxSize = 64*1024;

// FORWARD DECLARATIONS

class CSharedDataFileSystemNotifier;

/**

* Server side object for RDosAudio class in the client side and the plug-in

* side Audio service derives from this,

*/

class CDosSharedDataBase : public CDosService

{

public:

	IMPORT_C static CDosSharedDataBase* NewL(CSharedDataFileSystemNotifier* fileSystemNotifier);

	IMPORT_C static CDosSharedDataBase* NewLC(CSharedDataFileSystemNotifier* fileSystemNotifier);

	virtual ~CDosSharedDataBase();

private:

	/**

	* Processes the message sent by the client.

	* @param aMessage Client-server message.

	* @return Symbian error code.

	*/

	IMPORT_C TInt ExecuteMessageL(const RMessage2& aMessage);

    void ConstructL(CSharedDataFileSystemNotifier* fileSystemNotifier);

protected:

	/**

	* Provide default implementation for plug-in methods incase plug-in

	* module doesn't provide the actual implementation.

	*/

    void RequestFreeDiskSpace( TInt* aRequest );

    void RequestFreeDiskSpaceCancel( TInt* aRequest );

    /**

    * Adjusts the size of the reserve file as close to the maximum size

    * as possible so that the current minimum free disk space

    * request is still fulfilled.

    *

    * @param aRequiredFreeDiskSpace current minimum requirement for the

    *                               amount of free disk space

    */

    void SetReserveFileSize( const TInt aRequiredFreeDiskSpace );

private:

    // free disk space notifier

    //CSharedDataFileSystemNotifier* iFileSystemNotifier;

    // highest outstanding free disk space request

    //TInt* iCurrentFreeDiskSpaceRequest;

    //TInt iFreeDiskSpaceRequest;

    const RMessage2* iMessage;  // Kernel owns

    CSharedDataFileSystemNotifier* iFileSystemNotifier;

    RFs iFs;

    TInt iFreeDiskSpaceRequest;

//	inline CSharedDataServer* Server();

    // friend classes

    friend class CSharedDataFileSystemNotifier;

};

#endif //__DOSSHAREDDATABASE_H__