/*

* Copyright (c) 2008-2009 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:    Base classes for multi-purpuse tasks

*

*/

/**

 * @internal reviewed 31/07/2007 by Simon Brooks

 */

#include "glxtntask.h"

#include <glxtracer.h>

#include "mglxtnthumbnailcreatorclient.h"

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

// Constructor

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

//

CGlxtnTask::CGlxtnTask(const TGlxtnTaskId& aId, const TGlxMediaId& aItemId,

                        MGlxtnThumbnailStorage* aStorage)

		: iState(EStarting), iId(aId), iItemId(aItemId), iStorage(aStorage)

    {

    TRACER("CGlxtnTask::CGlxtnTask()");

    iPriority = CActive::EPriorityStandard;

    }

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

// Destructor

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

//

CGlxtnTask::~CGlxtnTask()

    {

    TRACER("CGlxtnTask::~CGlxtnTask()");

    }

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

// SetManager

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

//

void CGlxtnTask::SetManager(CGlxtnTaskManager* /*aManager*/)

    {

    TRACER("CGlxtnTask::SetManager()");

    // No implementation - can be overridden by subclasses

    }

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

// StartL

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

//

void CGlxtnTask::StartL(TRequestStatus& aStatus)

	{

    TRACER("CGlxtnTask::StartL()");

	__ASSERT_DEBUG(iState == EIdle || iState == EStarting, Panic(EGlxPanicIllegalState));

	iState = EStarting;

	TBool active = DoStartL(aStatus);

	if (active) 

		{

		iState = ERunning;

		}

	else 

		{

		iState = EComplete; // Well, that was quick

		}

	}

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

// Cancel

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

//

void CGlxtnTask::Cancel()

    {

    TRACER("CGlxtnTask::Cancel()");

    if ( ERunning == iState )

        {

        DoCancel();

        }

    iState = ECanceled;

    }

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

// RunL

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

//

void CGlxtnTask::RunL(TRequestStatus& aStatus) 

	{

    TRACER("void CGlxtnTask::RunL()");

	__ASSERT_DEBUG(iState == ERunning, Panic(EGlxPanicIllegalState));

	TBool active = DoRunL(aStatus);

	if (!active) 

		{

		iState = EComplete; // The task is done

		}

	}

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

// RunError

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

//

void CGlxtnTask::RunError(TInt aError)

    {

    TRACER("void CGlxtnTask::RunError()");

    if ( !DoRunError(aError) ) 

        {

        iState = EComplete; // The task is done

        }

    }

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

// SelfComplete

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

//

void CGlxtnTask::SelfComplete(TRequestStatus& aStatus) 

	{

    TRACER("CGlxtnTask::SelfComplete()");

    aStatus = KRequestPending;

    TRequestStatus* status = &aStatus;

    User::RequestComplete(status, KErrNone);

	}

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

// Constructor

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

//

CGlxtnClientTask::CGlxtnClientTask(const TGlxtnTaskId& aId,

        const TGlxMediaId& aItemId, MGlxtnThumbnailCreatorClient& aClient) :

    CGlxtnTask(aId, aItemId, aClient.ThumbnailStorage()), iClient(aClient)

    {

    TRACER("CGlxtnClientTask::CGlxtnClientTask()");

    }