// 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:

// An ative object wrapper to manage the reference data bus. This is the P&S bus

// that the network gateway publishes to.

// 

//

/**

 @file

 @InternalComponent

*/

#ifndef __LBSREFDATABUS_H__

#define __LBSREFDATABUS_H__

#include <e32base.h>

#include <lbspositioninfo.h>

#include "lbsnetinternalapi.h"

#include "lbsreffnpint.h"

class MDataBusObserver;

/**

Assumes something else has already called RLbsPositionUpdates::InitializeL()

*/

class CRefDataBus : public CActive

	{

public:

	static CRefDataBus* NewL(MDataBusObserver& aObserver);

	~CRefDataBus();

	void Subscribe();

	void UnSubscribe();

	TInt GetLastPositionInfo(TPositionInfo& aRefInfo, TTime& aActualTime);

	/**

	The panic codes for the reference data bus object.

	*/

	enum TRefDataBusPanic

		{

		/** 

		An instance of the MRefDataBusObserver has not been passed to the object.

		The panic category will be "RefDataBus".

		*/

		ERefDataBusObserverNotSet = 0

		};

private:

	CRefDataBus(MDataBusObserver& aObserver);

	void ConstructL();

	// from CActive

	void RunL();

	void DoCancel();

	TInt RunError(TInt aError);

private:

	MDataBusObserver& 		iObs;

	RLbsNetworkPositionUpdates	iRefDataBus;

	TPositionInfo iPositionInfo;

	};

#endif // __LBSREFDATABUS_H__