/*

* 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 "cntmodelprovider.h"

#include <qtcontacts.h>

#include <qthreadstorage.h>

// TLS Object definiton

QThreadStorage<CntModelProvider*> tls;

/*!

    \return pointer to the CntModelProvider object. If it is first call then it constructs itself, 

    on second instance call it just returns pointer stored in TLS.

*/

CntModelProvider* CntModelProvider::instance()

{

    CntModelProvider* self=0;

    //Check Thread local storage

    if (!tls.hasLocalData())

    {

        // create new provider

        self = new CntModelProvider;

        // and store it to TLS

        tls.setLocalData(self);

    }

    else

    {

        // otherwise get data from TLS

        self = tls.localData();

    }

    // increase reference count i.e. how many instances there are

    ++self->mRefCount;

    // return to pointer to "this" object

    return self;

}

/*!

    Releases "handle" to the class. Decreases reference count and if this is the last client for the class it will delete itself.

*/

void CntModelProvider::release()

{

    // decrese reference count and delete the object if we are last one

    --mRefCount;

    if (mRefCount == 0) 

    {

        tls.setLocalData(0); // this will invoke "delete this"

    }

}

/*!

    Destructor

*/

CntModelProvider::~CntModelProvider()

{

    mRefCount=0;

    delete mContactModel;

    mContactModel=0;

    delete mContactManager;

    mContactManager=0;

    delete mContactSimManager;

    mContactSimManager=0;

}

/*!

    Constructor. Initialize reference count and contactmodel pointer.

*/

CntModelProvider::CntModelProvider():

    mRefCount(0),

    mContactModel(0),

    mContactManager(0),

    mContactSimManager(0)

{

}

/*!

    \return pointer to the contact model.

*/

MobCntModel *CntModelProvider::contactModel()

{

    // if no model exists, create a new one with default first name last name sort order

    if (!mContactModel)

    {

        QList<QContactSortOrder> sortOrders;

        QContactSortOrder sortOrderFirstName;

        sortOrderFirstName.setDetailDefinitionName(QContactName::DefinitionName, QContactName::FieldFirst);

        sortOrders.append(sortOrderFirstName);

        QContactSortOrder sortOrderLastName;

        sortOrderLastName.setDetailDefinitionName(QContactName::DefinitionName, QContactName::FieldLast);

        sortOrders.append(sortOrderLastName);

        mContactModel=new MobCntModel(contactManager(), QContactFilter(), sortOrders);

        //create also a manager for SIM contacts

        if (!mContactSimManager)

        {

            mContactSimManager=new QContactManager("symbiansim");

        }

    }

    return mContactModel;

}

/*!

    \return pointer to the contact manager.

*/

QContactManager *CntModelProvider::contactManager()

{

    // if no model exists, create a new one

    if (!mContactManager)

    {

        mContactManager=new QContactManager("symbian");

    }

    return mContactManager;

}

/*!

    \return pointer to the SIM contacts manager.

*/

QContactManager *CntModelProvider::contactSimManager()

{

    // if no model exists, create a new one

    if (!mContactSimManager)

    {

        mContactSimManager=new QContactManager("symbiansim");

    }

    return mContactSimManager;

}

/*!

    \return number of handles to this object

*/

int CntModelProvider::referenceCount()

{

    return mRefCount;

}