/*

* Copyright (c) 2002-2004 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 class implements notifications from bearers which is needed when

*     transferring data to/from wap gw.

*

*/

#ifndef CMMSBEARERSTATUS_H

#define CMMSBEARERSTATUS_H

//  INCLUDES

#include    <e32base.h>

#include    <nifman.h>

#include    "mmssession.h"

// CONSTANTS

// MACROS

// DATA TYPES

// FUNCTION PROTOTYPES

// FORWARD DECLARATIONS

class MMmsTransportObserver;

// CLASS DECLARATION

/**

*  Class for detecting GPRS state and if transfer was cancelled

*/

NONSHARABLE_CLASS( CMmsBearerStatus ): public CActive

    {

    enum TMmsBearerType

        {

        EMmsBearerGprs = 0,

        EMmsBearerWcdma

        };

    public:  // Constructors and destructor

        /**

        * Two-phased constructor.

        * @param aRConnection opened RConnection

        */

        static CMmsBearerStatus* NewL( RConnection& aRConnection );

        /**

        * Destructor.

        */

        virtual ~CMmsBearerStatus();

    public: // New functions

        /**

        * Used to query if the bearer is set to GPRS

        * @return True if GPRS, false otherwise

        */

        TBool IsGprs() const;

        /**

        * Used to query if the bearer (GPRS only) is in suspended state

        * @return True if suspended, false otherwise

        */

        TBool IsSuspended();

        /**

        * A request function to notify the requester if transfer is cancelled

        * NOTE! NotifySuspendResume and NotifyTransferCancel can not be called 

        * from same instance at the same time !        

        * @param aRequester Pointer to the object making the request 

        */

        void SubscribeNotification( MMmsTransportObserver* aRequester);

        /**

        * Function to set the bearer in use

        * @param aBearerType Type of bearer

        */

        void SetBearer( TMmsBearerType aBearerType );

    public: // Functions from base classes

    protected:  // New functions

    protected:  // Functions from base classes

        /**

        * Active object cancellation

        */

        void DoCancel();

    private:

        /**

        * C++ default constructor.

        */

        CMmsBearerStatus();

        /**

        * By default Symbian OS constructor is private.

        * @param aRConnection opened RConnection

        */

        void ConstructL( RConnection& aRConnection );

        /**

        * Completion

        */

        void RunL();

        // By default, prohibit copy constructor

        CMmsBearerStatus( const CMmsBearerStatus& );

        // Prohibit assignment operator

        CMmsBearerStatus& operator= ( const CMmsBearerStatus& );

    public:     // Data

    protected:  // Data

    private:    // Data

    TMmsBearerType      iBearerType;

    MMmsTransportObserver*   iRequester;

    RConnection*        iRConnection;

    TNifProgressBuf     iProgressBuffer;

    TBool               iConnected;

    TBool               iSuspended;

    public:     // Friend classes

    protected:  // Friend classes

    private:    // Friend classes

    };

    #include "mmsbearerstatus.inl"

#endif      // CMMSBEARERSTATUS_H

// End of File