/*

* 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 MSMMENGINE_H

#define MSMMENGINE_H

#include <e32base.h>

class TUSBMSDeviceDescription;

class TMsmmNodeBase;

class TUsbMsInterface;

class TUsbMsLogicalUnit;

class TUsbMsDevice;

NONSHARABLE_CLASS(CMsmmEngine) : public CBase

    {

public:

    virtual ~CMsmmEngine();

    static CMsmmEngine* NewL();

    static CMsmmEngine* NewLC();

public:

    /**

    Called to add a Usb MS device node

    @param aDevice The device currently attched

    */

    void AddUsbMsDeviceL(const TUSBMSDeviceDescription& aDevice);

    /**

    Called to add a Usb MS interface node

    @param aDevice The device to which current interface belongs

    @param aInterfaceNode Currently adding interface node

    */

    TUsbMsInterface* AddUsbMsInterfaceL(TInt aDeviceId, 

            TUint8 aInterfaceNumber, TInt32 aInterface);

    /**

    Called to add a Usb MS LU node

    @param aDeviceId The device identifier of the device by which current 

        logical unit supported

    @param aInterfaceNumber The interface number value of the interface

        to which current logical unit belongs

    @param aLogicalUnitNumber Current LU number value

    @param aDrive The drive on which current LU mounted

    */

    void AddUsbMsLogicalUnitL(TInt aDeviceId, TInt aInterfaceNumber, 

            TInt aLogicalUnitNumber, TText aDrive);

    /**

    Called to remove a Usb MS node

    @param aNodeToBeRemoved The node to be removed

    */

    void RemoveUsbMsNode(TMsmmNodeBase* aNodeToBeRemoved);

    /**

    Called to search a particular device in engine

    @param aDeviceId The related device identifier of the device node

    @return Pointer to the device node found out in the data engine

    */

    TUsbMsDevice* SearchDevice(TInt aDeviceId) const;

    /**

    Called to search a particular device in engine. Intends to be used

    when a parent device node is available.

    @param aDevice The parent device node of the interface node 

        currently searched 

    @param aInterfaceNumber The related interface number value of the 

        interface node

    @return Pointer to the device node found out in the data engine

    */

    TUsbMsInterface* SearchInterface(TMsmmNodeBase* aDevice, 

            TInt aInterfaceNumber) const;

protected:

    CMsmmEngine();

    void ConstructL();

private:

    // Called to add a new USB MS interface node into data engine.

    TUsbMsInterface* AddUsbMsInterfaceNodeL(TUsbMsDevice* iParent,

            TInt aInterfaceNumber, TInt aInterfaceToken);

    // Called to add a new USB MS logical unit node into data engine.

    TUsbMsLogicalUnit* AddUsbMsLogicalUnitNodeL(TUsbMsInterface* iParent,

            TInt aLogicalUnitNumber, TText aDrive);

private:

    TMsmmNodeBase* iDataEntrys; // Usb Ms device tree

    };

#endif /*MSMMENGINE_H*/