1 // Copyright (c) 2008-2009 Nokia Corporation and/or its subsidiary(-ies).

     2 // All rights reserved.

     3 // This component and the accompanying materials are made available

     4 // under the terms of "Eclipse Public License v1.0"

     5 // which accompanies this distribution, and is available

     6 // at the URL "http://www.eclipse.org/legal/epl-v10.html".

     7 //

     8 // Initial Contributors:

     9 // Nokia Corporation - initial contribution.

    10 //

    11 // Contributors:

    12 //

    13 // Description:

    14 // responsehandler.cpp

    15 // 

    16 //

    17 

    18 /**

    19  @file

    20  @InternalComponent

    21 */

    22 

    23 #include "cpositionerq.h"

    24 #include "cagpsresponsehandler.h"

    25 #include "lbsdevloggermacros.h"

    26 #include "psypanic.h"

    27 #include "utilfunctions.h"

    28 #include "cpositionerq.h"

    29 #include "crequesthandler.h"

    30 #include "tpositionercall.h"

    31 

    32 /*

    33 * CAgpsResponseHandler::NewL

    34 * Two-phased constructor.

    35 */

    36 CAgpsResponseHandler* CAgpsResponseHandler::NewL(CPositionerQ* aPositionerQ, CRequestHandler* aRequestHandler)

    37     {

    38     CAgpsResponseHandler* self = new( ELeave ) CAgpsResponseHandler(aPositionerQ, aRequestHandler);

    39     

    40     CleanupStack::PushL( self );

    41     self->ConstructL();

    42     CleanupStack::Pop();

    43 

    44     return self;

    45     }

    46 

    47 /*

    48 * CAgpsResponseHandler::CAgpsResponseHandler

    49 * C++ default constructor can NOT contain any code, that

    50 * might leave.

    51 */

    52 CAgpsResponseHandler::CAgpsResponseHandler(CPositionerQ* aPositionerQ, CRequestHandler* aRequestHandler)

    53     {

    54     iPositionerQ = aPositionerQ;

    55     iRequestHandler = aRequestHandler;

    56     }

    57 

    58 CAgpsResponseHandler::~CAgpsResponseHandler()

    59     {

    60     delete iAGPSDataBus;

    61     delete iFinalNetDataBus;

    62 	delete iRefDataBus;

    63 	}

    64 

    65 /**

    66 * construct the data bus by module ID and set the data bus observer

    67 */

    68 void CAgpsResponseHandler::ConstructL()

    69 	{

    70 	iAGPSDataBus = CAgpsDataBus::NewL(*this, KLbsGpsLocManagerUid);

    71 	iFinalNetDataBus = CFinalNetDataBus::NewL(*this);

    72 	iRefDataBus = CRefDataBus::NewL(*this);

    73 	

    74    	Subscribe();

    75 	}

    76 	

    77 void CAgpsResponseHandler::Subscribe()

    78 	{

    79 	iAGPSDataBus->Subscribe();

    80 	iFinalNetDataBus->Subscribe();

    81 	iRefDataBus->Subscribe();

    82 	}

    83 	

    84 /**

    85 Location update

    86 

    87 @param aPosition Position info from the data bus

    88 @param aStatus status of the bus

    89 @param aError error code

    90 @param aActualTime position update time

    91 */

    92 void CAgpsResponseHandler::DataUpdate(TPositionInfo& aPosition, TInt aStatus, TInt aError, TTime aActualTime, TUint aAttributes, TUint aMode)

    93 	{

    94 	LBSLOG(ELogP1, "CAgpsResponseHandler::DataUpdateL Start ");

    95 

    96 	Subscribe();

    97 	

    98 	if(aStatus==KErrNone)

    99 		{

   100 		TModeUpdate mode(aMode);

   101 		iPositionerQ->PositionerIterator(mode);

   102 		

   103 		// if this is valid data then we need to tell the positioner

   104 		if((KErrNone == aError))

   105 			{

   106 			LBSLOG(ELogP1, "CAgpsResponseHandler::DataUpdateL Valid ");

   107 			

   108 			TLocationUpdate call(aPosition, aError, aActualTime, aMode);

   109 			iPositionerQ->PositionerIterator(call);

   110 			

   111 			iRequestHandler->NotifyRequestComplete();

   112 			}

   113 		else if (KPositionCalculationFutile == aError)

   114 			{

   115 			LBSLOG(ELogP1, "CAgpsResponseHandler::DataUpdateL Futile update ");

   116 			if(!(aAttributes & RLbsPositionUpdates::ESelfLocateSessionInProgress))//nb: futile updates ignored during session as manager will re-publish on session complete

   117 				{

   118 				// If there's a valid FNP we should use that, otherwise use this futile update

   119 				TPositionInfo FnpPosInfo;

   120 				TTime actualTime;

   121 				TInt err = iFinalNetDataBus->GetLastPositionInfo(FnpPosInfo, actualTime);

   122 				if(err == KErrNone && actualTime > aActualTime)

   123 					{

   124 					LBSLOG(ELogP1, "CAgpsResponseHandler::DataUpdateL using FNP");

   125 					TLocationUpdate call(FnpPosInfo, aError, aActualTime, aMode);

   126 					iPositionerQ->PositionerIterator(call);

   127 					iRequestHandler->NotifyRequestComplete();

   128 					}

   129 				else

   130 					{

   131 					TLocationUpdate call(aPosition, aError, aActualTime, aMode);

   132 					iPositionerQ->PositionerIterator(call);

   133 					iRequestHandler->NotifyRequestComplete();

   134 					}

   135 				}

   136 			else

   137 				{

   138 				LBSLOG(ELogP1, "CAgpsResponseHandler::DataUpdateL Ignoring Futile update during self locate session");

   139 				}

   140 			}

   141 		else if (aError < 0)

   142 			{

   143 			LBSLOG2(ELogP1, "CAgpsResponseHandler::DataUpdateL -  Error: %d", aError);

   144 			

   145 			TUpdateFailed call(aError);

   146 			iPositionerQ->PositionerIterator(call);

   147 			iRequestHandler->NotifyRequestComplete();

   148 			}

   149 		else

   150 			{

   151 			// 'Futile' is the only +ve error code we currently have, so this shouldn't happen

   152 			__ASSERT_DEBUG(EFalse, User::Panic(KAdaptationPanicCategory, EPanicUnknownUpdateError));

   153 			}

   154 		}

   155 	LBSLOG(ELogP1, "CAgpsResponseHandler::DataUpdateL End ");

   156 	}

   157 

   158 /**

   159 GetLastPosition

   160 

   161 Retrieves the most recent position that's less than the supplied max age if there is one, 

   162 including partial positions if partial allowed

   163 

   164 @param aPos	container for the position being returned (with KErrNone return)	

   165 @param aOldestValidTime	 the oldest valid time for a position being returned. If there is a valid position no older than this time, it should be returned.

   166 @param aAllowPartial	whether partial updates should be considered

   167 @return ETrue if the fix fulfills the requirements, 

   168 */

   169 TBool CAgpsResponseHandler::GetLastPosition(TPositionInfoBase& aPos, TTime aOldestValidTime, TBool aAllowPartial)

   170 	{

   171 	TBool ret = EFalse;

   172 	TTime actualTime, mostRecent;

   173 	TPositionSatelliteInfo satPosInfo;

   174 	TPositionInfo refPosInfo, FnpPosInfo;

   175  	TPosition pos;

   176  	TPositionChoice posChoice = ENone; 	 	

   177  	TInt err;

   178  	TUint attributes;

   179  	TUint mode = 0;

   180  	

   181  	err = iAGPSDataBus->GetLastPositionInfo(satPosInfo, mostRecent, attributes, mode);

   182 	if( err == KErrNone && mostRecent >= aOldestValidTime)	// got a recent enough gps position

   183 		{

   184 		satPosInfo.GetPosition(pos);

   185 		if(aAllowPartial || !Partial(pos))// complete enough

   186 			{

   187 			posChoice = EAGPSPos;

   188 			}

   189 		}

   190 	err = iRefDataBus->GetLastPositionInfo(refPosInfo, actualTime);

   191 	if( err == KErrNone && actualTime >= aOldestValidTime) // got a recent enough ref position

   192 		{

   193 		refPosInfo.GetPosition(pos);

   194 		if(aAllowPartial || !Partial(pos))// complete enough

   195 			{

   196 			if(posChoice == ENone || actualTime > mostRecent)

   197 				{

   198 				posChoice = ERefPos;

   199 				}

   200 			}		

   201 		}

   202 	err = iFinalNetDataBus->GetLastPositionInfo(FnpPosInfo, actualTime);

   203 	if( err == KErrNone && actualTime >= aOldestValidTime)  // got a recent enough fnp position

   204 		{

   205 		FnpPosInfo.GetPosition(pos);

   206 		if(aAllowPartial || !Partial(pos))// complete enough

   207 			{

   208 			if(posChoice == ENone || actualTime > mostRecent )

   209 				{

   210 				posChoice = EFNPPos;

   211 				}

   212 			}		

   213 		}

   214 

   215 	TPositionInfo* chosenPosInfo(NULL);

   216 	

   217 	switch(posChoice)

   218 		{

   219 		case ENone:

   220 			break;	

   221 		case EAGPSPos:

   222 			{

   223 			chosenPosInfo = &satPosInfo;

   224 			break;

   225 			}

   226 		case ERefPos:

   227 			{

   228 			chosenPosInfo = &refPosInfo;

   229 			break;

   230 			}

   231 			

   232 		case EFNPPos:

   233 			{

   234 			chosenPosInfo = &FnpPosInfo;

   235 			break;

   236 			}

   237 		default:

   238 			__ASSERT_DEBUG(EFalse, User::Invariant());

   239 		}

   240 		

   241 	if(chosenPosInfo != NULL)

   242 		{

   243 		TRAPD(error, CopyPositionTypes(aPos, *chosenPosInfo));

   244 		if(!error)

   245 			{

   246 			ret = ETrue;

   247 			}

   248 		else

   249 			{

   250 			LBSLOG(ELogP1, "CAgpsResponseHandler::GetLastPosition() failed to copy position ");

   251 			ret = EFalse;

   252 			}

   253 		}

   254 	

   255 	return ret;

   256 	}

   257