/*

* Copyright (c) 2002 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: 

*       Provides methods for CPbkThumbnailManager implementation classes.

*

*/

// INCLUDE FILES

#include "CPbkThumbnailManagerImpl.h"

#include "CPbkEmbeddedThumbnail.h"

#include <CPbkContactItem.h>

#include <TPbkContactItemField.h>

#include <CPbkFieldsInfo.h>

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

MPbkThumbnailReader* PbkThumbnailOperationFactory::CreateReaderLC

        (const CPbkContactItem& aContact,

        MPbkThumbnailGetObserver& aObserver,

        TInt aFieldId /*= EPbkFieldIdThumbnailImage*/)

    {

    const TPbkContactItemField* field = aContact.FindField(aFieldId);

    MPbkThumbnailReader* reader = NULL;

    if (field)

        {

        switch (field->StorageType())

            {

            case KStorageTypeStore:

                {

                reader = CPbkEmbeddedThumbnailReader::NewLC(*field,aObserver);

                break;

                }

              default:

                {

                // Unsupported storage type -> return NULL

                break;

                }

            }

        }

    return reader;

    }

MPbkThumbnailReader* PbkThumbnailOperationFactory::CreateImageReaderLC

        (const CPbkContactItem& aContact,

        MPbkThumbnailGetImageObserver& aObserver,

        TInt aFieldId /*= EPbkFieldIdThumbnailImage*/)

    {

    const TPbkContactItemField* field = aContact.FindField(aFieldId);

    MPbkThumbnailReader* reader = NULL;

    if (field)

        {

        switch (field->StorageType())

            {

            case KStorageTypeStore:

                {

                reader = CPbkEmbeddedThumbnailImageReader::NewLC(*field,aObserver);

                break;

                }

            default:

                {

                // Unsupported storage type -> return NULL

                break;

                }

            }

        }

    return reader;

    }

MPbkThumbnailWriter* PbkThumbnailOperationFactory::CreateWriterLC

        (CPbkContactItem& aContact, 

        const CPbkFieldsInfo& aFieldsInfo,

        MPbkThumbnailSetObserver& aObserver,

        TInt aFieldId /*= EPbkFieldIdThumbnailImage*/)

    {

    MPbkThumbnailWriter* writer = NULL;

    TPbkContactItemField* field = aContact.FindField(aFieldId);

    if (field && !SupportedStorageType(field->StorageType()))

        {

        // Existing field's storage type is not supported -> remove field

        aContact.RemoveField(aContact.FindFieldIndex(*field));

        field = NULL;

        }

    if (!field)

        {

        // No thumbnail field -> create one

        CPbkFieldInfo* fieldInfo = aFieldsInfo.Find(aFieldId);

        if (!SupportedStorageType(fieldInfo->FieldStorageType()))

            {

            // Global field type's storage type is not supported -> abort

            User::Leave(KErrNotSupported);

            }     

        field = &aContact.AddFieldL(*fieldInfo);

        }

    switch (field->StorageType())

        {

        case KStorageTypeStore:

            {

            writer = CPbkEmbeddedThumbnailWriter::NewLC(*field, aObserver);

            break;

            }

        default:

            {

            // Field's storage type is not supported

            User::Leave(KErrNotSupported);

            break;

            }

        }

    return writer;

    }

TBool PbkThumbnailOperationFactory::SupportedStorageType

        (TStorageType aStorageType)

    {

    return KStorageTypeStore==aStorageType ? ETrue: EFalse;

    }

//  End of File