/*

* Copyright (c) 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: 

*

*/

#ifndef _FolderScanner_STM_H_

#define _FolderScanner_STM_H_

// Constants

// Include files 

#include <e32base.h>

#include <f32file.h>

#include "SysTimer.h"

// Constants 

static const int KDefaultScanPeriod = 500;

// Interface class definition

class CFolderScanner_if

	{

	friend class CFolderScanner;

	protected:

		virtual void FileFound(const TDesC& filename) = 0;

	};

// Class definition 

class CFolderScanner :    public CBase

						, public CSysTimer_if

	{

	protected:

		// Constructor

		CFolderScanner() {}

		// Second phase constructor

		void ConstructL(			// Users client

			  CFolderScanner_if* client

			// Source folder to scan

			, const TDesC& folder

			// Extension

			, const TDesC& ext

			// Scanning period in milliseconds

			, int aScanPeriod		

			);

	public:

		// Destructor	

		IMPORT_C ~CFolderScanner();

		// Construction initiator - use this to construct objects

		IMPORT_C static CFolderScanner* NewL(

			// Users client

			  CFolderScanner_if* client

			// Source folder to scan

			, const TDesC& folder

			// Extension

			, const TDesC& ext

			// Scanning period in milliseconds

			, int aScanPeriod = KDefaultScanPeriod		

			);

		// The scanner stops when it has found something

		// Call this to continue scanning

		IMPORT_C void ContinueScan();

	protected:

		CFolderScanner_if* iClient;

		// Classes for scannning dirs

		RFs				iFs;		// Fileserver session

		CSysTimer*		iTimer;		// Timer for scanning

		// Timeout

		int				iTimeout;

		HBufC*			iFolder;

		HBufC*			iScanPath;

		HBufC*			iScanExt;

		void Timer(int);

		inline bool ScanOnce();

	};

#endif // _FolderScanner_STM_H_