/****************************************************************************

**

** Copyright (C) 2008-2010 Nokia Corporation and/or its subsidiary(-ies).

** All rights reserved.

** Contact: Nokia Corporation (developer.feedback@nokia.com)

**

** This file is part of the HbWidgets module of the UI Extensions for Mobile.

**

** GNU Lesser General Public License Usage

** This file may be used under the terms of the GNU Lesser General Public

** License version 2.1 as published by the Free Software Foundation and

** appearing in the file LICENSE.LGPL included in the packaging of this file.

** Please review the following information to ensure the GNU Lesser General

** Public License version 2.1 requirements will be met:

** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.

**

** In addition, as a special exception, Nokia gives you certain additional

** rights.  These rights are described in the Nokia Qt LGPL Exception

** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.

**

** If you have questions regarding the use of this file, please contact

** Nokia at developer.feedback@nokia.com.

**

****************************************************************************/

#include "hbmodeliterator_p.h"

#include <QAbstractItemModel>

HbModelIteratorPrivate::HbModelIteratorPrivate()

    : mModel(0), mRootIndex(QModelIndex())

{

}

HbModelIteratorPrivate::~HbModelIteratorPrivate()

{

}

QModelIndex HbModelIteratorPrivate::first(const QModelIndex &parent) const

{

    if (mModel) {

        return mModel->index(0, 0, parent);

    }

    return QModelIndex();

}

QModelIndex HbModelIteratorPrivate::last(const QModelIndex &parent) const

{

    if (mModel) {

        return mModel->index(mModel->rowCount(parent)-1, 0, parent);

    }

    return QModelIndex();

}

void HbModelIteratorPrivate::setModel(QAbstractItemModel *model, QModelIndex rootIndex)

{

    mModel = model;

    setRootIndex(rootIndex);

}

void HbModelIteratorPrivate::setRootIndex(QModelIndex rootIndex)

{

    if (mModel

        && rootIndex.isValid()) {

        #ifdef QT_DEBUG

            Q_ASSERT(rootIndex.model() == mModel);

        #endif

        if (rootIndex.model() == mModel) {

            mRootIndex = rootIndex;

        } else {

            mRootIndex = QModelIndex();

        }

    } else {

        mRootIndex = QModelIndex();

    }

}