datasourcemodules/gpspositioningmodule/lbsagpspsy/inc/responsehandler/crefdatabus.h
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Tue, 02 Feb 2010 01:50:39 +0200
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// Copyright (c) 2008-2009 Nokia Corporation and/or its subsidiary(-ies).
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// All rights reserved.
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// This component and the accompanying materials are made available
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// under the terms of "Eclipse Public License v1.0"
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// which accompanies this distribution, and is available
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// at the URL "http://www.eclipse.org/legal/epl-v10.html".
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//
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// Initial Contributors:
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// Nokia Corporation - initial contribution.
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//
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// Contributors:
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//
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// Description:
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// An ative object wrapper to manage the reference data bus. This is the P&S bus
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// that the network gateway publishes to.
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// 
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//
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/**
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 @file
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 @InternalComponent
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*/
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#ifndef __LBSREFDATABUS_H__
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#define __LBSREFDATABUS_H__
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#include <e32base.h>
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#include <lbspositioninfo.h>
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#include "lbsnetinternalapi.h"
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#include "lbsreffnpint.h"
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class MDataBusObserver;
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/**
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Assumes something else has already called RLbsPositionUpdates::InitializeL()
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*/
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class CRefDataBus : public CActive
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	{
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public:
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	static CRefDataBus* NewL(MDataBusObserver& aObserver);
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	~CRefDataBus();
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	void Subscribe();
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	void UnSubscribe();
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	TInt GetLastPositionInfo(TPositionInfo& aRefInfo, TTime& aActualTime);
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	/**
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	The panic codes for the reference data bus object.
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	*/
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	enum TRefDataBusPanic
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		{
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		/** 
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		An instance of the MRefDataBusObserver has not been passed to the object.
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		The panic category will be "RefDataBus".
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		*/
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		ERefDataBusObserverNotSet = 0
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		};
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private:
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	CRefDataBus(MDataBusObserver& aObserver);
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	void ConstructL();
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	// from CActive
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	void RunL();
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	void DoCancel();
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	TInt RunError(TInt aError);
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private:
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	MDataBusObserver& 		iObs;
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	RLbsNetworkPositionUpdates	iRefDataBus;
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	TPositionInfo iPositionInfo;
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	};
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#endif // __LBSREFDATABUS_H__