/*

* Copyright (c) 2007-2008 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:  FreestyleEmailUi exit guardian implementation.

*

*/

#include "FreestyleEmailUiAppui.h"

#include "ceuiexitguardian.h"

#include "emailtrace.h"

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

// CEUiExitGuardian::NewL

//

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

//

CEUiExitGuardian* CEUiExitGuardian::NewL( CFreestyleEmailUiAppUi& aAppUi )

	{

    FUNC_LOG;

    CEUiExitGuardian* self = new (ELeave) CEUiExitGuardian(aAppUi);

    CleanupStack::PushL(self);

    self->ConstructL();

    CleanupStack::Pop(self);

    return self;

	}

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

// CEUiExitGuardian::CEUiExitGuardian

//

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

//

CEUiExitGuardian::CEUiExitGuardian( CFreestyleEmailUiAppUi& aAppUi )

    : iAppUi(aAppUi)

    {

    FUNC_LOG;

    }

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

// CEUiExitGuardian::~CEUiExitGuardian

//

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

//

CEUiExitGuardian::~CEUiExitGuardian()

    {

    FUNC_LOG;

    delete iIdle;

    }

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

// CEUiExitGuardian::ConstructL

//

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

//

void CEUiExitGuardian::ConstructL()

    {

    FUNC_LOG;

    iIdle = CIdle::NewL(CActive::EPriorityStandard);

    }

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

// CEUiExitGuardian::EnterLC

//

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

//

void CEUiExitGuardian::EnterLC()

    {

    FUNC_LOG;

    if (iExitPending)

        {

        User::Leave(KErrNotReady);

        }

    iEnterCount++;

    CleanupStack::PushL(TCleanupItem(Exit, this));

    }

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

// CEUiExitGuardian::Exit

//

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

//

void CEUiExitGuardian::Exit(TAny* aPtr)

    {

    FUNC_LOG;

    reinterpret_cast<CEUiExitGuardian*>(aPtr)->DoExit();

    }

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

// CEUiExitGuardian::DoExit

//

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

//

void CEUiExitGuardian::DoExit()

    {

    FUNC_LOG;

    iEnterCount--;

    if (iExitPending && !iEnterCount && !iIdle->IsActive())

        {

        // Start async exit processing to rewind recursion before the actual

        // exit

        iIdle->Start( TCallBack( IdleCallBack, this ) );

        }

    }

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

// CEUiExitGuardian::IdleCallBack

//

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

//

TInt CEUiExitGuardian::IdleCallBack( TAny* aPtr )

    {

    FUNC_LOG;

    reinterpret_cast<CEUiExitGuardian*>( aPtr )->iAppUi.ExitNow();

    return KErrNone;

    }

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

// CEUiExitGuardian::ExitApplication

//

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

//

TInt CEUiExitGuardian::ExitApplication()

    {

    FUNC_LOG;

    TInt result( KRequestPending );

    iExitPending = ETrue;

    if (!iEnterCount)

        {

        result = KErrNone;

        iAppUi.ExitNow();

        }

    return result;

    }

// end of file