/*

* Copyright (c) 2007-2007 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:  CCFDelay class implementation.

*

*/

// INCLUDE FILES

#include "cfdelay.h"

#include "cfbasicoptrace.h"

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

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

// CCFDelay::CCFDelay

// Delayed evaluation should be as exact as possible. Set high priority.

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

//

CCFDelay::CCFDelay( MCFDelayExpired& aDelayer )

    :   CTimer( EPriorityHigh ),

        iDelayer( aDelayer )

    {

    FUNC_LOG;

    }

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

// CCFDelay::ConstructL

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

//

void CCFDelay::ConstructL()

    {

    FUNC_LOG;

    // Construct ctimer

    CTimer::ConstructL();

    // Add into active scheduler if not already added

    if( !IsAdded() )

        {

        CActiveScheduler::Add( this );

        }

    }

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

// CCFDelay::NewL

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

//

CCFDelay* CCFDelay::NewL( MCFDelayExpired& aDelayer )

    {

    FUNC_LOG;

    CCFDelay* self = CCFDelay::NewLC( aDelayer );

    CleanupStack::Pop( self );

    return self;

    }

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

// CCFDelay::NewLC

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

//

CCFDelay* CCFDelay::NewLC( MCFDelayExpired& aDelayer )

    {

    FUNC_LOG;

    CCFDelay* self = new( ELeave ) CCFDelay( aDelayer );

    CleanupStack::PushL( self );

    self->ConstructL();

    return self;

    }

// Destructor

CCFDelay::~CCFDelay()

    {

    FUNC_LOG;

    Cancel();

    }

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

// CCFDelay::Delay

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

//

void CCFDelay::Delay( const TTimeIntervalMicroSeconds32& aDelay )

    {

    FUNC_LOG;

    TBool startDelay = ETrue;

    if ( IsActive() )

        {

        TTime currentTime;

        currentTime.HomeTime();

        TInt64 elapsedTime = currentTime.Int64() - iDelayStartTime.Int64();

        if ( aDelay.Int() < ( iDelay - elapsedTime ) )

            {

            startDelay = EFalse; // Current delay outlasts the new one

            }

        }

    if ( startDelay )

        {

        Cancel(); // Cancel ongoing timer if any

        iDelay = aDelay.Int();

        iDelayStartTime.HomeTime();

        After( aDelay ); // Start delay

        }

    }

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

// CCFDelay::RunL

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

//

void CCFDelay::RunL()

    {

    FUNC_LOG;

    iDelayer.ExpiredL();

    }

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

// CCFDelay::RunError

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

//

#ifndef ERROR_TRACE

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

#else // ERROR_TRACE defined

TInt CCFDelay::RunError( TInt aError )

#endif

    {

    FUNC_LOG;

    ERROR( aError, "Call MCFDelayExpired::ExpiredL() leave code: %d (skipped)" );

    return KErrNone; // Ignore errors

    }