/*

* 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: 

*     CAlwaysOnlineDiskSpaceObserver declaration file

*

*

*/

#ifndef ALWAYSONLINEDISKSPACEOBSERVER_H

#define ALWAYSONLINEDISKSPACEOBSERVER_H

//  INCLUDES

#include <e32base.h>

#include <f32file.h>

// FORWARD DECLARATIONS

class CAlwaysOnlineManager;

// CLASS DECLARATION

/**

* CAlwaysOnlineDiskSpaceObserver

*/

class CAlwaysOnlineDiskSpaceObserver : public CActive

    {

    public:  // Constructors and destructor

        /**

        * Two-phased constructor.

        *

        * @param aManager A pointer to CAlwaysOnlineManager

        * @param aFs A reference to file session

        */

        static CAlwaysOnlineDiskSpaceObserver* NewL( CAlwaysOnlineManager* aManager, 

        											CMsvSession& aSession );

        /**

        * Destructor.

        */

        virtual ~CAlwaysOnlineDiskSpaceObserver();

    public: // New functions

        /**

        *

        * @param aLimit The trigger limit in bytes

        */

        void SetLimitAndActivateL();

    private:

        /**

        * Private C++ constructor.

        *

        * @param aManager A pointer to CAlwaysOnlineManager

        * @param aFs A reference to file session

        */

        CAlwaysOnlineDiskSpaceObserver( CAlwaysOnlineManager* aManager, CMsvSession& aSession );

    private:

        /**

        * From CActive

        */

        void RunL();

        /**

        * From CActive

        */

        void DoCancel();

        /**

		* Function to handle error during running the operation

		* @since Series60 2.6

		* @return KErrNone, when error has been handled

		*/

		virtual TInt RunError( TInt aError );

    private: // New Functions

        /**

        * Updates current disk limit

        * @since Series60 3.0

        */

        void HandleLimitChange();

    private: // Data

        CAlwaysOnlineManager*   iWatcher;

        CAlwaysOnlineManager&   iManager;

        CMsvSession&            iSession;

        TUint                   iNewLimit;

        TUint                   iCurrentLimit;

    };

#endif      // 

// End of File