/*

* Copyright (c) 2004-2007 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:  Contains the CRsBtDiscoverEngine class definition and its observer

* 	 		     definition (MBtDiscoveryObserver).

*

*/

#ifndef CRSBTDISCOVERENGINE_H

#define CRSBTDISCOVERENGINE_H

#include <e32base.h>

#include <f32file.h>

#include <bttypes.h>

#include "imageprint.h"

#include "cbttimer.h"

class CBtDiscover;

class CRsBtDevice;

class CBtDeviceContainer;

#define KMaxDaysForCachedDevice 30

/**

  * \brief Observer interface for device discovery or SDP events.

  *

  * The class which owns the CRsBtDiscoverEngine object implements this interface to get

  * asynchronous notifications of Bluetooth device discovery or Service Discovery Protocol

  * events.

  */

class MBtDiscoveryObserver

	{

		public:

			// the values in this enum are subject to change as need crops up

			// the granularity of feedback should be enough to meet UI needs

			enum TEvent

			{

				EFoundBtPrinter,

				ERemoveBtPrinter,

				EDoneFindingPrinters,

				EErrorDuringDiscover,

				EErrorFindingDevice,

				EErrorVerifyingBt

			};

		public:

			virtual void HandleDiscoveryEvent(TInt aEvent,TInt aErrorCode)=0;

	};

/**

  * \brief Brief Description

  *

  * Detailed Description

  */

NONSHARABLE_CLASS( CRsBtDiscoverEngine ): public CActive, public MBtTimerObserver

	{

		public:

			CRsBtDevice& GetDevice();

			~CRsBtDiscoverEngine();

			static CRsBtDiscoverEngine* NewL(MBtDiscoveryObserver& aObs);

			void Start(TUint aRequestedProtocols);

			void Stop();

		protected:	// from CActive

			void DoCancel();

			void RunL();

			TInt RunError(TInt aError);

		protected:	// from MBtTimerObserver

			void HandleTimeoutL();

		private:

			CRsBtDiscoverEngine(MBtDiscoveryObserver& aObs);

			void ConstructL();

			void StartDiscovery();

			void ContinueDiscovery();

			TBool ComposeDeviceL();

			void ResetDevice();

			TBool CheckBtDevice();

			void ServiceDiscoveryL();

			void StopServiceDiscovery();

		private:

			enum TState

				{

				EFindingDevices,

				EGettingServices,

				EDelayFindDevices

				};

		private:

			/// State we are currently on ESendingCached, EFindingDevices, ERemovingStale, EVerifyServices, EDelayFindDevices.

			TState iState;

			/// This Object implements the Bluetooth Discovery system calls.

			CBtDiscover *iDiscover;

			/// Discovery Events observer.

			MBtDiscoveryObserver& iObserver;

			/// Indicates the position of the current device.

			CRsBtDevice* iDevice;

			RArray<TBTDevAddr> iFoundBeforeArray;

			RTimer iDelayFindDevices;

			/// Bitmask of the protocols requested for printing.

			TUint  iRequestedProtocols;

			CBtTimer* iTimeout;

	};

#endif // CRSBTDISCOVERENGINE_H

//  End of File