/*

* Copyright (c) 2002-2009 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of the License "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:   Declaration of the WlanWsaCommand class.

*

*/

/*

* %version: 22 %

*/

#ifndef WLANWSACOMMAND_H

#define WLANWSACOMMAND_H

#include "UmacMacState.h"

class WlanContextImpl;

class WlanMacActionState;

/**

*  WHA command base class.

*

*  @lib wlanumac.lib

*  @since S60 v3.1

*/

class WlanWsaCommand : public WlanMacState

    {

public:

    /**

    * Destructor.

    */

    virtual ~WlanWsaCommand();

public:

    virtual void Exit( WlanContextImpl& aCtxImpl );

    void Act( WlanContextImpl& aCtxImpl, TUint32 aAct ) const;

    inline void History( WlanMacActionState& aState );

protected:

    /**

    * C++ default constructor.

    */

    WlanWsaCommand () : iMacActionHistoryState( NULL ) {};

    void TraverseToHistoryState( 

        WlanContextImpl& aCtxImpl, 

        WHA::TCommandId aCommandId, 

        WHA::TStatus aStatus,

        const WHA::UCommandResponseParams& aCommandResponseParams );

    inline WlanMacActionState& History();

    void ChangeState( 

        WlanContextImpl& aCtxImpl, 

        WlanWsaCommand& aPrevState,

        WlanMacActionState& aNewState ) const;

private:

    /**

    * Transmit a protocol stack frame

    * 

    * The frame to be sent needs to be in 802.3 format

    * @param aCtxImpl global state machine context

    * @param aDataBuffer meta header of the frame to be transmitted

    * @param aMore ETrue if another frame is also ready to be transmitted

    *              EFalse otherwise

    */

    virtual TBool TxData( 

        WlanContextImpl& aCtxImpl,

        TDataBuffer& aDataBuffer,

        TBool aMore );

    virtual void TxMgmtData( 

        WlanContextImpl& aCtxImpl,

        TDataBuffer& aDataBuffer );

    // from wha side

    virtual void Indication( 

        WlanContextImpl& aCtxImpl, 

        WHA::TIndicationId aIndicationId,

        const WHA::UIndicationParams& aIndicationParams );

    // Frame receive

    virtual TAny* RequestForBuffer ( 

        WlanContextImpl& aCtxImpl,             

        TUint16 aLength );

    virtual void ReceivePacket( 

        WlanContextImpl& aCtxImpl, 

        WHA::TStatus aStatus,

        const void* aFrame,

        TUint16 aLength,

        WHA::TRate aRate,

        WHA::TRcpi aRcpi,

        WHA::TChannelNumber aChannel,

        TUint8* aBuffer,

        TUint32 aFlags );

    // from packet scheduler

    /**

     * Method called when packet has been transferred to the WLAN device

     *

     * @since S60 3.1

     * @param aCtxImpl global state machine context

     * @param aPacketId packet whose transfer is complete

     * @param aMetaHeader frame meta header

     */

    virtual void OnPacketTransferComplete( 

        WlanContextImpl& aCtxImpl, 

        TUint32 aPacketId,

        TDataBuffer* aMetaHeader );

    virtual void OnPacketSendComplete(

        WlanContextImpl& aCtxImpl, 

        WHA::TStatus aStatus,

        TUint32 aPacketId,

        WHA::TRate aRate,

        TUint32 aPacketQueueDelay,

        TUint32 aMediaDelay,

        TUint aTotalTxDelay,

        TUint8 aAckFailures,

        WHA::TQueueId aQueueId,

        WHA::TRate aRequestedRate,

        TBool aMulticastData );

    /**

    * Method called when Packet Scheduler's packet scheduling method 

    * should be called, as there exists a packet that is suitable for 

    * transmission.

    * NOTE: if any other Packet Scheduler method is called within this

    * context the result is undefined.

    * 

    * @param aMore ETrue if another frame is also ready to be transmitted

    *              EFalse otherwise

    */

    virtual void CallPacketSchedule( 

        WlanContextImpl& aCtxImpl,

        TBool aMore );

    virtual void OnPacketPushPossible( 

        WlanContextImpl& aCtxImpl );

private:    // Data

    /**

    * History (previous) state

    * Not own

    */

    WlanMacActionState* iMacActionHistoryState;

    };

#include "UmacWsaCommand.inl"

#endif      // WLANWSACOMMAND_H