/*

 * 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: 

 *

 */

namespace EmailClientApi

{

/*!

   Constructor

 */

NmApiEventNotifierPrivate::NmApiEventNotifierPrivate(QObject *parent) :

    QObject(parent), mEmitSignals(NULL), mEngine(NULL), mIsRunning(false)

{

    NM_FUNCTION;

}

/*!

   Destructor

 */

NmApiEventNotifierPrivate::~NmApiEventNotifierPrivate()

{

    NM_FUNCTION;

}

/*!

   \brief It initialize engine for email operations. 

   When use initializeEngine need to remember release it.

   It return value if initialization go good.

   \sa releaseEngine 

   \return Return true if engine works.

 */

bool NmApiEventNotifierPrivate::initializeEngine()

{

    NM_FUNCTION;

    if (!mEngine) {

        mEngine = NmApiEngine::instance();

    }

    return mEngine ? true : false;

}

/*!

   \brief It release engine for email operations.

   \sa initializeEngine

 */

void NmApiEventNotifierPrivate::releaseEngine()

{

    NM_FUNCTION;

    if (mIsRunning) {

        cancel();

    }

    else {

        NmApiEngine::releaseInstance(mEngine);

    }

}

/*!

   Add one email event into buffer.

   It is run by \sa NmApiEngine::emailStoreEvent signal.

   \sa NmApiMessage

   \param events It contains full info about object and it event.

 */

void NmApiEventNotifierPrivate::emailStoreEvent(const NmApiMessage &events)

{

    NM_FUNCTION;

    mBufferOfEvents << events;

}

void NmApiEventNotifierPrivate::cancel()

{

    NM_FUNCTION;

    if (!mIsRunning) {

        return;

    }

    mIsRunning = false;

    mEmitSignals->stop();

    if (mEngine) {

        disconnect(mEngine, SIGNAL(emailStoreEvent(NmApiMessage)), this,

            SLOT(emailStoreEvent(NmApiMessage)));

    }

    releaseEngine();

    mBufferOfEvents.clear();

}

}