// Copyright (c) 2006-2009 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 CMTPSTORAGEWATCHER_H

#define CMTPSTORAGEWATCHER_H

#include <e32base.h>

#include <mtp/tmtptypeevent.h>

#include "mtpdebug.h"

#include "rmtpframework.h"

#include "rmtpdpsingletons.h"

class MMTPDataProviderFramework;

/** 

Implements the MTP device data provider system storage watcher.

@internalComponent

*/

class CMTPStorageWatcher : public CActive

   {    

public:

    static CMTPStorageWatcher* NewL(MMTPDataProviderFramework& aFramework);

    ~CMTPStorageWatcher();

    void EnumerateStoragesL();

    void Start();

private: // Form CActive

    void DoCancel();

    TInt RunError(TInt aError);

    void RunL();

private:

    CMTPStorageWatcher(MMTPDataProviderFramework& aFramework);

    void ConstructL();

    TUint32 DriveConfigurationL(TBool aAllDrives) const;

    TBool Excluded(TDriveNumber aDriveNumber) const;

    void RequestNotification();

    void SendEventL(TUint16 aEvent, TUint32 aStorageId);

    void StorageAvailableL(TDriveNumber aDriveNumber);

    void StorageUnavailableL(TDriveNumber aDriveNumber);    

    void AppendFolderExclusionListL();

private: // Owned

    enum TState    

        {

        EUndefined  = 0x00000000,

        EStarted    = 0x00000001

        };

private: // Owned

    /**

    FLOGGER debug trace member variable.

    */

    __FLOG_DECLARATION_MEMBER_MUTABLE;

    /**

    The available drives configuration.

    */

	TUint32                         iDrivesConfig;

    /**

    The drive exclusion list.

    */

    RArray<TUint>                   iDrivesExcluded;

    /**

    The MTP event dataset buffer.

    */

    TMTPTypeEvent                   iEvent;

    /**

    The MTP framework singletons.

    */

    RMTPFramework                   iFrameworkSingletons;

    /**

    The logical storages allocation enable flag.

    */

    TBool                           iAllocateLogicalStorages;

    /**

    The state variable.

    */

    TUint32                         iState;

    /**

    The folder exclusion list.

    */

    CDesCArray*						iFolderExclusionList;

    /**

    The DP Singleton.

    */

    RMTPDpSingletons				iDpSingletons;

private: // Not owned.

    MMTPDataProviderFramework&      iFramework;

    };

#endif // CMTPSTORAGEWATCHER_H