/*

* 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:    Task used for thumbnail availability filter.

*

*/

/**

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

 */

#include "glxtnfilteravailabletask.h"

#include <glxassert.h>

#include <glxtracer.h>

#include "glxtnfileinfo.h"

#include "mglxtnstorage.h"

#include "mglxtnthumbnailcreatorclient.h"

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

// NewL

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

//

CGlxtnFilterAvailableTask* CGlxtnFilterAvailableTask::NewL(

                    const TArray<TGlxMediaId>& aItemArray, const TSize& aSize,

                    MGlxtnThumbnailCreatorClient& aClient)

    {

    TRACER("CGlxtnFilterAvailableTask* CGlxtnFilterAvailableTask::NewL()");

    CGlxtnFilterAvailableTask* task = new (ELeave) CGlxtnFilterAvailableTask(

                                                                aSize, aClient);

    CleanupStack::PushL(task);

    task->ConstructL(aItemArray);

    CleanupStack::Pop(task);

    return task;

    }

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

// Constructor

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

//

CGlxtnFilterAvailableTask::CGlxtnFilterAvailableTask(const TSize& aSize,

                                        MGlxtnThumbnailCreatorClient& aClient) :

    CGlxtnClientTask(KGlxtnTaskIdFilterAvailable, KGlxIdNone, aClient),

    iSize(aSize)

    {

    TRACER("CGlxtnFilterAvailableTask::CGlxtnFilterAvailableTask()");

    }

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

// ConstructL

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

//

void CGlxtnFilterAvailableTask::ConstructL(

                                        const TArray<TGlxMediaId>& aItemArray)

    {

    TRACER("void CGlxtnFilterAvailableTask::ConstructL()");

    TInt count = aItemArray.Count();

    for ( TInt i = 0; i < count; i++ )

        {

        iIdArray.AppendL(aItemArray[i]);

        }

    }

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

// Destructor

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

//

CGlxtnFilterAvailableTask::~CGlxtnFilterAvailableTask() 

    {

    TRACER("CGlxtnFilterAvailableTask::~CGlxtnFilterAvailableTask()");

    delete iFileInfo;

    iIdArray.Close();

    }

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

// DoStartL

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

//

TBool CGlxtnFilterAvailableTask::DoStartL(TRequestStatus& aStatus)

    {

    TRACER("TBool CGlxtnFilterAvailableTask::DoStartL()");

    iIndex = 0;

    GLX_ASSERT_DEBUG( !iFileInfo, Panic( EGlxPanicAlreadyInitialised ),

                        "iFileInfo not NULL" );

    iFileInfo = new (ELeave) CGlxtnFileInfo;

    return GetFileInfoL(aStatus);

    }

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

// DoCancel

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

//

void CGlxtnFilterAvailableTask::DoCancel() 

    {

    TRACER("void CGlxtnFilterAvailableTask::DoCancel()");

    Storage()->StorageCancel();

    }

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

// DoRunL

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

//

TBool CGlxtnFilterAvailableTask::DoRunL(TRequestStatus& aStatus) 

    {

    TRACER("TBool CGlxtnFilterAvailableTask::DoRunL()");

    TInt result = aStatus.Int();

    User::LeaveIfError(result);

    TBool active = EFalse;

    switch ( iState )

        {

        case EStateFetchingUri:

            Storage()->IsThumbnailAvailableL(iIdArray[iIndex], *iFileInfo,

                                                iSize, &aStatus);

            iState = EStateChecking;

            active = ETrue;

            break;

        case EStateChecking:

            if ( KGlxThumbnailNotAvailable == result )

                {

                iIndex++;

                }

            else

                {

                iIdArray.Remove(iIndex);

                }

            active = GetFileInfoL(aStatus);

            break;

        default:

            GLX_ASSERT_ALWAYS( EFalse, Panic( EGlxPanicIllegalState ),

                            "CGlxtnFilterAvailableTask: Illegal state" );

            break;

        }

    return active; 

    }

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

// DoRunError

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

//

TBool CGlxtnFilterAvailableTask::DoRunError(TInt aError)

    {

    TRACER("CGlxtnFilterAvailableTask::DoRunError()");

    Client().FilterAvailableComplete(iIdArray, aError);

    return EFalse;

    }

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

// GetFileInfoL

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

//

TBool CGlxtnFilterAvailableTask::GetFileInfoL(TRequestStatus& aStatus)

    {

    TRACER("CGlxtnFilterAvailableTask::GetFileInfoL()");

    if ( iIndex < iIdArray.Count() )

        {

        Client().FetchFileInfoL(iFileInfo, iIdArray[iIndex], &aStatus);

        iState = EStateFetchingUri;

        return ETrue;

        }

    // Finished checking the array

    Client().FilterAvailableComplete(iIdArray, KErrNone);

    return EFalse;

    }