/*

* Copyright (c) 2008 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:  Handles getLocation requests

 *

*/

// INCLUDE FILES

#include "cpositioner.h"

#include "logger.h"

#include "locationfunctionserver.h"

using namespace java::location;

// UNNAMED LOCAL NAMESPACE

namespace

{

// Delay subsequent getLocation() calls. This way the failing

// requests do not steal all processing time

const TInt KLocCallDelay = 500000;

}

// ============================ MEMBER FUNCTIONS ===============================

// -----------------------------------------------------------------------------

// CPositioner::CPositioner

// C++ default constructor can NOT contain any code, that

// might leave.

// -----------------------------------------------------------------------------

//

CPositioner::CPositioner(LocationFunctionServer* aFunctionSource) :

        CPositionerBase(aFunctionSource)

{

}

// -----------------------------------------------------------------------------

// CPositioner::ConstructL

// Symbian 2nd phase constructor can leave.

// -----------------------------------------------------------------------------

//

void CPositioner::ConstructL(RPositionServer& aServer,

                             TPositionModuleId aModuleId,

                             TPositionModuleInfo::TCapabilities aCapabilities)

{

    BaseConstructL(aServer, aModuleId, aCapabilities);

    User::LeaveIfError(iTimer.CreateLocal());

}

// -----------------------------------------------------------------------------

// CPositioner::NewL

// Two-phased constructor.

// -----------------------------------------------------------------------------

//

CPositioner* CPositioner::NewL(LocationFunctionServer* aFunctionSource,

                               RPositionServer& aServer, TPositionModuleId aModuleId,

                               TPositionModuleInfo::TCapabilities aCapabilities)

{

    CPositioner* self = new(ELeave) CPositioner(aFunctionSource);

    CleanupStack::PushL(self);

    self->ConstructL(aServer, aModuleId, aCapabilities);

    CleanupStack::Pop(self);

    return self;

}

// Destructor

CPositioner::~CPositioner()

{

    iTimer.Close();

}

// -----------------------------------------------------------------------------

// CPositioner::StaticCancel

// (other items were commented in a header).

// -----------------------------------------------------------------------------

//

void CPositioner::StaticCancel(CPositioner* aSelf)

{

    aSelf->Cancel();

}

// -----------------------------------------------------------------------------

// CPositioner::SetCallBackData

// -----------------------------------------------------------------------------

//

void CPositioner::SetCallBackData(jobject aJavaPositioner, JNIEnv* aJni)

{

    mJni = aJni;

    mPeer = aJavaPositioner;

    jclass positionerClass = (*mJni).GetObjectClass(mPeer);

    //Get Method ID of Get Location Data Callback

    mGetLocationCallBack = mJni->GetMethodID(positionerClass, "syncComplete",

                           "(I)V");

}

// -----------------------------------------------------------------------------

// CPositioner::RunL

// (other items were commented in a header).

// -----------------------------------------------------------------------------

//

void CPositioner::RunL()

{

    TInt returnCode = iStatus.Int();

    switch (returnCode)

    {

    case KErrNone:

    {

        // If previously returned code was buffer overflow just inform

        // that the request was successful.

        TInt ret = (iDelayedCode == KErrPositionBufferOverflow)

                   || (iDelayedCode == KErrOverflow) ? KErrNone : iDelayedCode;

        // Obtained location information successfully, location fix is partial,

        // or the quality of the fix is poor. In the last two cases the

        // Java implementation tries to obtain location fix again. see API

        // specification about location fixes when temporary unavailable.

        // This is because the current implementation does not support partial

        // location fixes

        mJni = mFunctionServer->getValidJniEnv();

        (*mJni).CallVoidMethod(mPeer, mGetLocationCallBack, ret);

        break;

    }

    case KErrOverflow: // Fallthrough

    case KErrPositionBufferOverflow:

    {

        // CPositionerBase handles buffer size errors

        HandleBufferSizeErrorL(returnCode);

        // Buffer increased successfully. Make a new request

        UpdatePosition();

        break;

    }

    // Handle other return codes of RPositioner::NotifyPositionUpdate()

    // Partial update feature is not supported by this implementation

    case KPositionPartialUpdate: // Fallthrough

    case KPositionQualityLoss: // Fallthrough

        // KErrTimedOut is handled on Java-side

    case KErrTimedOut: // Fallthrough

        // KErrNotFound is returned if current module is invalid

    case KErrNotFound: // Fallthrough

        // HPositionGenericInfo should be supported by all PSYs

    case KErrArgument: // Fallthrough

        // KErrAccessDenied if no requestor specified

    case KErrAccessDenied: // Fallthrough

    case KErrUnknown: // Used in MLFW

        // Position request was canceled

    case KErrCancel: // Fallthrough 

        // Partial update feature is not supported. So Java tries to obtain

        // location fixes until time specified in Java-side expires

        // Delay response so that repeated calls to getLocation do not steal

        // all CPU time

    default:

    {

        iTimer.After(iStatus, KLocCallDelay);

        SetActive();

        break;

    }

    }

    iDelayedCode = returnCode;

}

// -----------------------------------------------------------------------------

// CPositioner::DoCancel

// (other items were commented in a header).

// -----------------------------------------------------------------------------

//

void CPositioner::DoCancel()

{

    iTimer.Cancel();

    iPositioner.CancelRequest(EPositionerNotifyPositionUpdate);

    mJni = mFunctionServer->getValidJniEnv();

    (*mJni).CallVoidMethod(mPeer, mGetLocationCallBack, KErrCancel);

}

// -----------------------------------------------------------------------------

// CPositioner::RunError

// (other items were commented in a header).

// -----------------------------------------------------------------------------

//

TInt CPositioner::RunError(TInt aError)

{

    mJni = mFunctionServer->getValidJniEnv();

    (*mJni).CallVoidMethod(mPeer, mGetLocationCallBack, aError);

    return KErrNone;

}

// -----------------------------------------------------------------------------

// CPositioner::GetLocation

// (other items were commented in a header).

// -----------------------------------------------------------------------------

//

TInt CPositioner::GetLocation(TInt aTimeout)

{

    TTimeIntervalMicroSeconds timeout = MAKE_TINT64(0, aTimeout) * 1000000;

    TPositionUpdateOptions updateOptions;

    updateOptions.SetUpdateTimeOut(timeout);

    TInt err = iPositioner.SetUpdateOptions(updateOptions);

    if (err == KErrNone)

    {

        UpdatePosition();

    }

    return err;

}

//  End of File