/*

* Copyright (c) 2008-2009 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:

*

*/

/**

 @file

 @internalComponent

*/

#ifndef SUBCOMMANDBASE_H

#define SUBCOMMANDBASE_H

#include <e32const.h>

#include <e32cmn.h>

#include <usb/hostms/srverr.h>

class TDeviceEvent;

class MMsmmSrvProxy;

class MUsbMsEventHandler;

class MUsbMsSubCommandCreator;

NONSHARABLE_CLASS(THostMsSubCommandParam)

    {

public:

    MMsmmSrvProxy& iServer;

    MUsbMsEventHandler& iHandler;

    MUsbMsSubCommandCreator& iCreator;

    TDeviceEvent& iEvent;

public:

    THostMsSubCommandParam(MMsmmSrvProxy& aServer, 

            MUsbMsEventHandler& aHandler, 

            MUsbMsSubCommandCreator& aCreator, TDeviceEvent& aEvent);

    };

class TSubCommandBase

    {    

public:

	TSubCommandBase(THostMsSubCommandParam& aParameter);

	// Called to execute current sub-command.

    void ExecuteL();

    // Called to do the further operation when current sub-command 

    // is done.

    void AsyncCmdCompleteL();

    // Called to cancel current pending sub-command

    void CancelAsyncCmd();

    // Called to generate command realted error notification data

    virtual void HandleError(THostMsErrData& aData, TInt aError) = 0;

    inline TBool IsExecuted() const;

    inline TBool IsKeyCommand() const;

protected:

    virtual void DoExecuteL() = 0;

    virtual void DoAsyncCmdCompleteL();

    virtual void DoCancelAsyncCmd();

protected:

    MMsmmSrvProxy& iServer;

    MUsbMsEventHandler& iHandler;

    MUsbMsSubCommandCreator& iCreator;

    const TDeviceEvent& iEvent;

    TBool iIsExecuted;

    TBool iIsKeyCommand;

    };

inline TBool TSubCommandBase::IsExecuted() const {return iIsExecuted;};

inline TBool TSubCommandBase::IsKeyCommand() const {return iIsKeyCommand;};

#endif /*SUBCOMMANDBASE_H*/