/*

* Copyright (c) 2004-2007 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:  Implements the CLandmarksPositionRequest class

*

*/

#include <AknWaitDialog.h>

#include <coemain.h>

#include <aknnotewrappers.h>

#include <lbspositioninfo.h>

#include "LandmarksUtils.h"

#include "LandmarksPositionRequest.h"

#include "LandmarksOperationObserver.h"

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

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

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

//

CLandmarksPositionRequest::CLandmarksPositionRequest(

    MLandmarksOperationObserver* aObserver)

    : 

    CActive(CActive::EPriorityStandard), 

    iObserver(aObserver),

    iState(EIdle)

    {

    CActiveScheduler::Add(this);

    }

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

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

//

void CLandmarksPositionRequest::ConstructL(const TDesC& aAppName)

    {

    iAppName = aAppName.AllocL();

    InitializeL();

    }

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

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

//

CLandmarksPositionRequest* CLandmarksPositionRequest::NewL(

    const TDesC& aAppName,

    MLandmarksOperationObserver* aObserver)

    {

    CLandmarksPositionRequest* self =

        new (ELeave) CLandmarksPositionRequest(aObserver);

    CleanupStack::PushL(self);

    self->ConstructL(aAppName);

    CleanupStack::Pop(self);

    return self;

    }

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

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

//

CLandmarksPositionRequest::~CLandmarksPositionRequest()

    {

    Cancel();

    iPositioner.Close();

    iLocationServer.Close();

    DismissWaitNote();

    delete iAppName;

    }

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

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

//

void CLandmarksPositionRequest::FetchPositionInfoL(

    const TDesC& aMessage,

    TPositionInfo& aPositionInfo)

    {

    Cancel();

    iPositionInfo = &aPositionInfo;

    // Initialize wait note

    CAknWaitDialog* waitNote = new (ELeave) CAknWaitDialog(

        reinterpret_cast <CEikDialog**> (&iWaitNote), ETrue); // show immedaitely

    CleanupStack::PushL(waitNote);

    waitNote->SetCallback(this);

    waitNote->SetTextL(aMessage);

    waitNote->PrepareLC(R_LMREFAPP_ACQUIRE_LOCATION_WAIT_NOTE);

    CleanupStack::Pop(waitNote); // waitNote will delete itself

    iWaitNote = waitNote;

    // Request location

    iState = EAcquiringDefaultLocation;

    ExecuteNextStep();

    // Launch wait note

    iWaitNote->RunLD();

    }

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

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

//

void CLandmarksPositionRequest::DismissWaitNote()

    {

    if (iWaitNote)

        {

        TInt err;

        TRAP(err, iWaitNote->ProcessFinishedL());

        iWaitNote = NULL;

        }

    }

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

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

//

void CLandmarksPositionRequest::DoCancel()

    {

    // Cancel location request

    if (iState == EAcquiringDefaultLocation)

        {

        iPositioner.CancelRequest(EPositionerNotifyPositionUpdate);

        }

    else if (iState == EAcquiringLastKnownLocation)

        {

        iPositioner.CancelRequest(EPositionerGetLastKnownPosition);

        }

    iState = EIdle;

    DismissWaitNote();

    }

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

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

//

void CLandmarksPositionRequest::RunL()

    {

    if (iStatus == KErrNone)

        {

        // Location retrieved. Operation finished.

        if ( iState == EAcquiringLastKnownLocation )

            {

            // inform user that it was last known location

            HBufC* msg = CCoeEnv::Static()->AllocReadResourceLC( R_LMREFAPP_LAST_LOCATION_USED_INFO );

            LandmarksUtils::ErrorNoteL( *msg );

            CleanupStack::PopAndDestroy(msg);

            }

        NotifyOperationCompleteL(KErrNone);

        }

    else // iStatus != KErrNone

        {

        if (iState == EAcquiringDefaultLocation)

            {

            // Fetching current location failed. Try last known location.

            iState = EAcquiringLastKnownLocation;

            ExecuteNextStep();

            }

        else if (iState == EAcquiringLastKnownLocation)

            {

            // Fetching last known location failed. 

            NotifyOperationCompleteL(iStatus.Int());

            }

        }

    }

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

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

//

TInt CLandmarksPositionRequest::RunError(TInt /*aError*/)

    {

    // Ignore possible errors.

    return KErrNone;

    }

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

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

//

void CLandmarksPositionRequest::DialogDismissedL(TInt aButtonId)

    {

    if (aButtonId == EAknSoftkeyCancel)

        {

        // Dialog is already dismissed by framework

        iWaitNote = NULL;

        Cancel();

        }

    }

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

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

//

void CLandmarksPositionRequest::ShowErrorL(TInt aError)

    {

    HBufC* format = CCoeEnv::Static()->AllocReadResourceAsDes16LC(

        R_LMREFAPP_ACQUIRING_LOC_ERROR);

    // some extra characters needed for error code

    const TInt KErrorCodeTextLength = 10;

    HBufC* message = HBufC::NewLC(

        format->Length() + KErrorCodeTextLength);

    message->Des().Format(*format, aError);

    CAknInformationNote* informationNote = 

        new (ELeave) CAknInformationNote(ETrue);

    informationNote->ExecuteLD(*message);

    CleanupStack::PopAndDestroy(2, format);

    }

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

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

//

void CLandmarksPositionRequest::ExecuteNextStep()

    {

    iStatus = KRequestPending;

    switch (iState)

        {

        case EAcquiringDefaultLocation:

            iPositioner.NotifyPositionUpdate(*iPositionInfo, iStatus);

            break;

        case EAcquiringLastKnownLocation:

            iPositioner.GetLastKnownPosition(*iPositionInfo, iStatus);

            break;

        default:    

            // this case should never happen, see RunL

            LandmarksUtils::Panic(KErrGeneral);

            break;

        }

    SetActive();

    }

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

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

//

void CLandmarksPositionRequest::NotifyOperationCompleteL(TInt aError)

    {

    DismissWaitNote();

    iState = EIdle;

    // Notify user if location couldn't be fetched.

    if (aError) 

        {

        ShowErrorL(aError);

        }

    // Notify Observer

    iObserver->NotifyOperationProgressL(

        EAcquiringLocation, KOperationReady, aError);

    }

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

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

//

void CLandmarksPositionRequest::InitializeL()

    {

    // Connect to the location server

    User::LeaveIfError(iLocationServer.Connect());

    // Open the default positioner

    User::LeaveIfError(iPositioner.Open(iLocationServer));

    // Set this application as location requestor

    User::LeaveIfError(iPositioner.SetRequestor(

        CRequestor::ERequestorService,

        CRequestor::EFormatApplication,

        *iAppName));

    // Set maximum allowed time for a location request

    const TInt K30Seconds = 30000000;

    TTimeIntervalMicroSeconds timeOut(K30Seconds);

    TPositionUpdateOptions updateOptions;

    updateOptions.SetUpdateTimeOut(timeOut);

    User::LeaveIfError(iPositioner.SetUpdateOptions(updateOptions));

    }