/*

* Copyright (c) 2005-2006 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:  CMnNavigator class implementation

*

*/

#include <e32base.h>

#include <e32math.h>

#include <AknServerApp.h>

#include <apaserverapp.h>

#include <lbsfields.h>

#include <lbsfieldids.h>

#include <EPos_CPosLandmark.h>

#include "mnprovider.h"

#include "mnnavigationserviceclient.h"

#include "mnnavigator.h"

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

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

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

//

CMnNavigator::CMnNavigator()

    {

    }

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

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

//

EXPORT_C CMnNavigator* CMnNavigator::NewL( CMnProvider& aProvider )

    {

    CMnNavigator* self = new (ELeave) CMnNavigator;

    CleanupStack::PushL( self );

    self->ConstructNewL( aProvider );

    CleanupStack::Pop( self );

    return self;

    }

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

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

//

EXPORT_C CMnNavigator* CMnNavigator::NewChainedL( CMnProvider& aProvider )

    {

    CMnNavigator* self = new (ELeave) CMnNavigator;

    CleanupStack::PushL( self );

    self->ConstructChainedL( aProvider );

    CleanupStack::Pop( self );

    return self;

    }

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

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

//

void CMnNavigator::ConstructCommonL( CMnProvider& aProvider )

    {

    if ( !( aProvider.SupportedServices() & CMnProvider::EServiceNavigation ) )

        {

        User::Leave( KErrNotSupported );

        }

    iSession = new (ELeave) RMnNavigationServiceClient;

    }

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

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

//

void CMnNavigator::ConstructNewL( CMnProvider& aProvider )

    {

    ConstructCommonL( aProvider );

    iSession->ConnectL( aProvider.Uid() );

    }

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

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

//

void CMnNavigator::ConstructChainedL( CMnProvider& aProvider )

    {

    ConstructCommonL( aProvider );

    iSession->ConnectChainedL( aProvider.Uid() );

    }

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

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

//

EXPORT_C CMnNavigator::~CMnNavigator()

    {

    delete iExitMonitor;

    if ( iSession )

        {

        iSession->Close();

        delete iSession;

        }

    }

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

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

//

EXPORT_C void CMnNavigator::NavigateToL(const CPosLandmark& aDestination)

    {

    // verify that destination landmark has coordinates

    TLocality loc;

    TBool valid = (KErrNone == aDestination.GetPosition( loc ) );

    valid &= !Math::IsNaN( loc.Latitude() ) && !Math::IsNaN( loc.Longitude() );

    if ( !valid )

        {

        // verify that destination landmark has address info

        TPositionFieldId fieldId = aDestination.FirstPositionFieldId();

        while ( fieldId != EPositionFieldNone )

            {

            if ( fieldId > EPositionFieldAddressCapabilitiesBegin &&

                 fieldId < EPositionFieldNMEACapabilitiesBegin)

                {

                TPtrC field;

                aDestination.GetPositionField( fieldId, field );

                if ( field.Length() )

                    {

                    valid = ETrue;

                    break;

                    }

                }

            fieldId = aDestination.NextPositionFieldId( fieldId );            

            }

        }

    if ( valid )

        {

        iSession->NavigateToL( aDestination );

        }

    else

        {

        User::Leave( KErrArgument );

        }

    }

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

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

//

EXPORT_C void CMnNavigator::SetExitObserverL( MAknServerAppExitObserver& aObserver )

	{

	if ( iExitMonitor )

		{

		User::Leave( KErrAlreadyExists );

		}

	else

		{

		iExitMonitor = CApaServerAppExitMonitor::NewL( 

			*iSession, aObserver, CActive::EPriorityStandard );

		}

	}

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

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

//

EXPORT_C void CMnNavigator::RemoveExitObserver()

	{

	delete iExitMonitor;

	iExitMonitor = NULL;

	}