/*

* 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:  Environment change observer for AI2

*

*/

#include <bacntf.h> // for CEnvironmentChangeNotifier

#include <coemain.h>

#include <AknDef.h> // for KEikDynamicLayoutVariantSwitch

#include "aienvironmentchangeobserver.h"

#include "aistatemanager.h"

#include "aifwpanic.h"

#include "debug.h"

CAiEnvironmentChangeObserver::CAiEnvironmentChangeObserver()

    {

    }

CAiEnvironmentChangeObserver::~CAiEnvironmentChangeObserver()

    {

    if( iEnvironmentChangeNotifier )

        {

        iEnvironmentChangeNotifier->Cancel();

        delete iEnvironmentChangeNotifier;

        }

    }

CAiEnvironmentChangeObserver* CAiEnvironmentChangeObserver::NewL( MAiStateManager* aStateManager )

    {

    CAiEnvironmentChangeObserver* self = new (ELeave) CAiEnvironmentChangeObserver();

    CleanupStack::PushL(self);

    self->ConstructL( aStateManager );

    CleanupStack::Pop(self);

    return self;

    }

void CAiEnvironmentChangeObserver::ConstructL( MAiStateManager* aStateManager )

    {

    iStateManager = aStateManager;

    iEnvironmentChangeNotifier = CEnvironmentChangeNotifier::NewL(

                                    EActivePriorityLogonA,

                                    TCallBack( EnvironmentChangeCallBack, this ) );

    iEnvironmentChangeNotifier->Start();

    }

TAiStateChanges CAiEnvironmentChangeObserver::Status()

    {

    // No statuses to report

    return ESMAIUnknownState;

    }

TInt CAiEnvironmentChangeObserver::EnvironmentChangeCallBack(TAny* aPtr)

    {

    CAiEnvironmentChangeObserver* self =

            static_cast<CAiEnvironmentChangeObserver*>( aPtr );

    __ASSERT_DEBUG( self, 

                    AiFwPanic::Panic( AiFwPanic::EAiFwPanic_NullPointerReference ) );

    const TInt changes( self->iEnvironmentChangeNotifier->Change() );

    // report environment changes

    if( changes & EChangesMidnightCrossover )

        {

        __PRINTS("XAI: Event: Midnight crossover");

        self->iStateManager->ReportStateChange( ESMAIMidnightCrossover );

        }

    if( changes & EChangesSystemTime )

        {

        __PRINTS("XAI: Event: Time changed");

        self->iStateManager->ReportStateChange( ESMAITimeChanged );

        }

    if( changes & EChangesLocale )

        {

        __PRINTS("XAI: Event: Locale setting changed");

        self->iStateManager->ReportStateChange( ESMAILocaleChanged );

        }

    return EFalse;

    }