javaextensions/location/position/src/cpositioner.cpp
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Tue, 06 Jul 2010 14:10:26 +0300
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child 83 26b2b12093af
child 87 1627c337e51e
permissions -rw-r--r--
Revision: v2.2.3 Kit: 2010127
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/*
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* Copyright (c) 2008 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:  Handles getLocation requests
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 *
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*/
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// INCLUDE FILES
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#include "cpositioner.h"
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#include "logger.h"
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#include "locationfunctionserver.h"
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using namespace java::location;
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// UNNAMED LOCAL NAMESPACE
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namespace
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{
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// Delay subsequent getLocation() calls. This way the failing
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// requests do not steal all processing time
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const TInt KLocCallDelay = 500000;
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}
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// ============================ MEMBER FUNCTIONS ===============================
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// -----------------------------------------------------------------------------
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// CPositioner::CPositioner
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// C++ default constructor can NOT contain any code, that
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// might leave.
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// -----------------------------------------------------------------------------
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//
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CPositioner::CPositioner(LocationFunctionServer* aFunctionSource) :
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        CPositionerBase(aFunctionSource)
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{
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}
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// -----------------------------------------------------------------------------
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// CPositioner::ConstructL
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// Symbian 2nd phase constructor can leave.
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// -----------------------------------------------------------------------------
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//
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void CPositioner::ConstructL(RPositionServer& aServer,
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                             TPositionModuleId aModuleId,
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                             TPositionModuleInfo::TCapabilities aCapabilities)
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{
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    BaseConstructL(aServer, aModuleId, aCapabilities);
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    User::LeaveIfError(iTimer.CreateLocal());
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}
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// -----------------------------------------------------------------------------
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// CPositioner::NewL
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// Two-phased constructor.
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// -----------------------------------------------------------------------------
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//
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CPositioner* CPositioner::NewL(LocationFunctionServer* aFunctionSource,
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                               RPositionServer& aServer, TPositionModuleId aModuleId,
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                               TPositionModuleInfo::TCapabilities aCapabilities)
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{
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    CPositioner* self = new(ELeave) CPositioner(aFunctionSource);
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    CleanupStack::PushL(self);
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    self->ConstructL(aServer, aModuleId, aCapabilities);
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    CleanupStack::Pop(self);
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    return self;
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}
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// Destructor
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CPositioner::~CPositioner()
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{
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    iTimer.Close();
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    Cancel();
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}
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// -----------------------------------------------------------------------------
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// CPositioner::StaticCancel
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// (other items were commented in a header).
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// -----------------------------------------------------------------------------
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//
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void CPositioner::StaticCancel(CPositioner* aSelf)
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{
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    aSelf->Cancel();
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}
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// -----------------------------------------------------------------------------
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// CPositioner::SetCallBackData
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// -----------------------------------------------------------------------------
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//
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void CPositioner::SetCallBackData(jobject aJavaPositioner, JNIEnv* aJni)
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{
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    mJni = aJni;
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    mPeer = aJavaPositioner;
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    jclass positionerClass = (*mJni).GetObjectClass(mPeer);
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    //Get Method ID of Get Location Data Callback
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    mGetLocationCallBack = mJni->GetMethodID(positionerClass, "syncComplete",
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                           "(I)V");
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}
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// -----------------------------------------------------------------------------
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// CPositioner::RunL
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parents:
diff changeset
   111
// (other items were commented in a header).
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parents:
diff changeset
   112
// -----------------------------------------------------------------------------
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   113
//
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diff changeset
   114
void CPositioner::RunL()
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parents:
diff changeset
   115
{
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   116
    TInt returnCode = iStatus.Int();
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parents:
diff changeset
   117
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   118
    switch (returnCode)
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parents:
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   119
    {
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   120
    case KErrNone:
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parents:
diff changeset
   121
    {
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   122
        // If previously returned code was buffer overflow just inform
2a9601315dfc Revision: v2.1.22
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   123
        // that the request was successful.
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parents:
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   124
        TInt ret = (iDelayedCode == KErrPositionBufferOverflow)
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   125
                   || (iDelayedCode == KErrOverflow) ? KErrNone : iDelayedCode;
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parents:
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   126
        // Obtained location information successfully, location fix is partial,
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   127
        // or the quality of the fix is poor. In the last two cases the
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   128
        // Java implementation tries to obtain location fix again. see API
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   129
        // specification about location fixes when temporary unavailable.
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   130
        // This is because the current implementation does not support partial
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diff changeset
   131
        // location fixes
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   132
        mJni = mFunctionServer->getValidJniEnv();
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   133
        (*mJni).CallVoidMethod(mPeer, mGetLocationCallBack, ret);
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   134
        break;
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   135
    }
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parents:
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   136
    case KErrOverflow: // Fallthrough
2a9601315dfc Revision: v2.1.22
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parents:
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   137
    case KErrPositionBufferOverflow:
2a9601315dfc Revision: v2.1.22
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parents:
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   138
    {
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parents:
diff changeset
   139
        // CPositionerBase handles buffer size errors
2a9601315dfc Revision: v2.1.22
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
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diff changeset
   140
        HandleBufferSizeErrorL(returnCode);
2a9601315dfc Revision: v2.1.22
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
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   141
        // Buffer increased successfully. Make a new request
2a9601315dfc Revision: v2.1.22
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
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   142
        UpdatePosition();
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
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   143
        break;
2a9601315dfc Revision: v2.1.22
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   144
    }
2a9601315dfc Revision: v2.1.22
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   145
    // Handle other return codes of RPositioner::NotifyPositionUpdate()
2a9601315dfc Revision: v2.1.22
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   146
    // Partial update feature is not supported by this implementation
2a9601315dfc Revision: v2.1.22
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
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   147
    case KPositionPartialUpdate: // Fallthrough
2a9601315dfc Revision: v2.1.22
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   148
    case KPositionQualityLoss: // Fallthrough
2a9601315dfc Revision: v2.1.22
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   149
        // KErrTimedOut is handled on Java-side
2a9601315dfc Revision: v2.1.22
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
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   150
    case KErrTimedOut: // Fallthrough
2a9601315dfc Revision: v2.1.22
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   151
        // KErrNotFound is returned if current module is invalid
2a9601315dfc Revision: v2.1.22
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   152
    case KErrNotFound: // Fallthrough
2a9601315dfc Revision: v2.1.22
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diff changeset
   153
        // HPositionGenericInfo should be supported by all PSYs
2a9601315dfc Revision: v2.1.22
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
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   154
    case KErrArgument: // Fallthrough
2a9601315dfc Revision: v2.1.22
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parents:
diff changeset
   155
        // KErrAccessDenied if no requestor specified
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
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   156
    case KErrAccessDenied: // Fallthrough
2a9601315dfc Revision: v2.1.22
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
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   157
    case KErrUnknown: // Used in MLFW
2a9601315dfc Revision: v2.1.22
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parents:
diff changeset
   158
        // Position request was canceled
48
e0d6e9bd3ca7 Revision: v2.2.3
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parents: 21
diff changeset
   159
    case KErrCancel: // Fallthrough 
e0d6e9bd3ca7 Revision: v2.2.3
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parents: 21
diff changeset
   160
        // Partial update feature is not supported. So Java tries to obtain
e0d6e9bd3ca7 Revision: v2.2.3
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parents: 21
diff changeset
   161
        // location fixes until time specified in Java-side expires
21
2a9601315dfc Revision: v2.1.22
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   162
        // Delay response so that repeated calls to getLocation do not steal
2a9601315dfc Revision: v2.1.22
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   163
        // all CPU time
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parents:
diff changeset
   164
    default:
2a9601315dfc Revision: v2.1.22
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parents:
diff changeset
   165
    {
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parents:
diff changeset
   166
        iTimer.After(iStatus, KLocCallDelay);
2a9601315dfc Revision: v2.1.22
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
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   167
        SetActive();
2a9601315dfc Revision: v2.1.22
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
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   168
        break;
2a9601315dfc Revision: v2.1.22
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parents:
diff changeset
   169
    }
2a9601315dfc Revision: v2.1.22
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   170
    }
2a9601315dfc Revision: v2.1.22
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   171
    iDelayedCode = returnCode;
2a9601315dfc Revision: v2.1.22
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parents:
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   172
}
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parents:
diff changeset
   173
2a9601315dfc Revision: v2.1.22
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   174
// -----------------------------------------------------------------------------
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diff changeset
   175
// CPositioner::DoCancel
2a9601315dfc Revision: v2.1.22
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parents:
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   176
// (other items were commented in a header).
2a9601315dfc Revision: v2.1.22
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   177
// -----------------------------------------------------------------------------
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diff changeset
   178
//
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diff changeset
   179
void CPositioner::DoCancel()
2a9601315dfc Revision: v2.1.22
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   180
{
2a9601315dfc Revision: v2.1.22
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diff changeset
   181
    iTimer.Cancel();
2a9601315dfc Revision: v2.1.22
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   182
    iPositioner.CancelRequest(EPositionerNotifyPositionUpdate);
2a9601315dfc Revision: v2.1.22
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   183
    mJni = mFunctionServer->getValidJniEnv();
2a9601315dfc Revision: v2.1.22
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   184
    (*mJni).CallVoidMethod(mPeer, mGetLocationCallBack, KErrCancel);
2a9601315dfc Revision: v2.1.22
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parents:
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   185
}
2a9601315dfc Revision: v2.1.22
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parents:
diff changeset
   186
2a9601315dfc Revision: v2.1.22
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   187
// -----------------------------------------------------------------------------
2a9601315dfc Revision: v2.1.22
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parents:
diff changeset
   188
// CPositioner::RunError
2a9601315dfc Revision: v2.1.22
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
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   189
// (other items were commented in a header).
2a9601315dfc Revision: v2.1.22
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parents:
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   190
// -----------------------------------------------------------------------------
2a9601315dfc Revision: v2.1.22
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parents:
diff changeset
   191
//
2a9601315dfc Revision: v2.1.22
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diff changeset
   192
TInt CPositioner::RunError(TInt aError)
2a9601315dfc Revision: v2.1.22
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   193
{
2a9601315dfc Revision: v2.1.22
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parents:
diff changeset
   194
    mJni = mFunctionServer->getValidJniEnv();
2a9601315dfc Revision: v2.1.22
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   195
    (*mJni).CallVoidMethod(mPeer, mGetLocationCallBack, aError);
2a9601315dfc Revision: v2.1.22
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
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   196
    return KErrNone;
2a9601315dfc Revision: v2.1.22
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parents:
diff changeset
   197
}
2a9601315dfc Revision: v2.1.22
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parents:
diff changeset
   198
2a9601315dfc Revision: v2.1.22
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   199
// -----------------------------------------------------------------------------
2a9601315dfc Revision: v2.1.22
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   200
// CPositioner::GetLocation
2a9601315dfc Revision: v2.1.22
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parents:
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   201
// (other items were commented in a header).
2a9601315dfc Revision: v2.1.22
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parents:
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   202
// -----------------------------------------------------------------------------
2a9601315dfc Revision: v2.1.22
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parents:
diff changeset
   203
//
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parents:
diff changeset
   204
TInt CPositioner::GetLocation(TInt aTimeout)
2a9601315dfc Revision: v2.1.22
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   205
{
2a9601315dfc Revision: v2.1.22
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parents:
diff changeset
   206
    TTimeIntervalMicroSeconds timeout = MAKE_TINT64(0, aTimeout) * 1000000;
2a9601315dfc Revision: v2.1.22
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   207
    TPositionUpdateOptions updateOptions;
2a9601315dfc Revision: v2.1.22
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   208
    updateOptions.SetUpdateTimeOut(timeout);
2a9601315dfc Revision: v2.1.22
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   209
2a9601315dfc Revision: v2.1.22
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   210
    TInt err = iPositioner.SetUpdateOptions(updateOptions);
2a9601315dfc Revision: v2.1.22
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   211
2a9601315dfc Revision: v2.1.22
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   212
    if (err == KErrNone)
2a9601315dfc Revision: v2.1.22
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   213
    {
2a9601315dfc Revision: v2.1.22
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   214
        UpdatePosition();
2a9601315dfc Revision: v2.1.22
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   215
    }
2a9601315dfc Revision: v2.1.22
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   216
    return err;
2a9601315dfc Revision: v2.1.22
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parents:
diff changeset
   217
}
2a9601315dfc Revision: v2.1.22
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   218
2a9601315dfc Revision: v2.1.22
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parents:
diff changeset
   219
//  End of File