diff -r 000000000000 -r 9cfd9a3ee49c datasourceadaptation/gpsdatasourceadaptation/common/inc/crequesthandler.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/datasourceadaptation/gpsdatasourceadaptation/common/inc/crequesthandler.h	Tue Feb 02 01:50:39 2010 +0200
@@ -0,0 +1,93 @@
+// 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:
+//
+
+/**
+ @file
+ @InternalComponent
+*/
+
+#ifndef __LBSREQUESTHANDLER_H__
+#define __LBSREQUESTHANDLER_H__
+
+#include <e32base.h>
+#include <lbssatellite.h>
+#include <lbsposition.h>
+#include <lbscriteria.h>
+#include "lbstimer.h" // for MLbsCallbackTimerObserver & CLbsCallbackTimer
+#include "LbsInternalInterface.h"
+
+class CPositionerQ;
+class TRequestParameters;
+class MPositioner;
+
+class CRequestHandler : public CBase, public MLbsCallbackTimerObserver
+
+	{
+	public:		
+		virtual ~CRequestHandler();
+		virtual void ReMergeWithCancelRequestL(TInt aError);
+        virtual void CancelRequestL();
+	    virtual void SubmitNewRequestL(MPositioner* aNewRequest);
+	    virtual void WarmDownTimerExpired();
+
+    	void NotifyRequestComplete();
+    	
+    	// from MLbsCallbackTimerObserver
+		void OnTimerEventL(TInt aTimerId);
+		TInt OnTimerError(TInt aError, TInt aTimerId);
+
+		enum TEventId // timer event ID at request queue level
+			{
+			EPowerStandByTimerEvent = 0
+			};
+			
+		enum TRequestHandlerPanic
+			{
+			KUnknownTimerEventId
+			};
+
+	protected:
+		CRequestHandler();
+		void ConstructL();
+
+		virtual void IssueStatus(TBool aTracking, TLbsPositionUpdateRequestBase::TPowerAdvice aPower = TLbsPositionUpdateRequestBase::ENoPowerAdvice) = 0;
+		virtual void IssueCancel(TBool aTracking, TLbsPositionUpdateRequestBase::TPowerAdvice aPower = TLbsPositionUpdateRequestBase::EPowerAdviceStandby) = 0;
+		virtual void IssueMergedRequestL() = 0;
+		void BuildUpdateRequest(TLbsLocRequestQuality& aRequest, const TTimeIntervalMicroSeconds& aTimeForFix, const TPositionQuality& aQuality);
+		virtual TInt MergeRequest(const TRequestParameters* aRequestParameters,
+							const TBool aTracking,
+							TLbsPositionUpdateRequestBase::TPowerAdvice aPower = TLbsPositionUpdateRequestBase::ENoPowerAdvice) = 0;
+		
+		virtual void ResetMergedRequest() = 0;
+	
+	protected:	
+		TLbsPositionUpdateRequest iMergedRequest;					// next potential position update request
+		TLbsPositionUpdateRequest iCurrentRequest;					// current update request that's on the bus
+		CPositionerQ* iPositionerQ;
+		
+	private:
+		void SubmitRequestL();
+		TBool MergedDifferent();
+
+		void MergeAllRequests();
+		TInt MergeNewRequest(TInt aNewRequest);
+		void TimeOutTimerEvent();
+		TInt TimeOutTimerError(TInt /*aError*/);
+
+        TUint iTrackingCount;
+		CLbsCallbackTimer* iPowerStandByTimer; // sends a standby if no requests in the queue
+	};
+	
+#endif // __LBSREQUESTHANDLER_H__