/*

 * Copyright (c) 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:

 *

 */

#include "nmapiengine.h"

#include "nmapienvelopelisting_p.h"

namespace EmailClientApi

{

NmEnvelopeListingPrivate::NmEnvelopeListingPrivate(QObject* parent) :

    QObject(parent), mEngine(NULL)

{

}

NmEnvelopeListingPrivate::~NmEnvelopeListingPrivate()

{

    releaseEngine();

}

/*!

 * \brief It initialize engine for email operations. 

 * 

 * When use initializeEngine need to remember release it.

 * It return value if initialization go good.

 * \sa releaseEngine 

 */

bool NmEnvelopeListingPrivate::initializeEngine()

{

    mEngine = NmEngine::instance();

    return mEngine ? true : false;

}

/*!

 * \brief It release engine for email operations.

 * 

 * It release Engine and return value if release go good.

 * 

 * \arg engine Is used to get info if engine was released, if yes, then argument have value 0.

 * 

 * \sa initializeEngine

 */

void NmEnvelopeListingPrivate::releaseEngine()

{

    NmEngine::releaseInstance(mEngine);

}

/*!

 * \brief It grab envelopes from engine. 

 * 

 * When it start grabing, it release all old.

 * Because it uses NmMessageEnvelope with sharedData we don't need care about release memory.

 * 

 * \return Count of envelopes

 */

qint32 NmEnvelopeListingPrivate::grabEnvelopes()

{

    mEnvelopes.clear();

    mEngine->listEnvelopes(mailboxId, folderId, mEnvelopes);

    return mEnvelopes.count();

}

}