/*
 *   Copyright 2009 by Alan Alpert <alan.alpert@nokia.com>
 *   Copyright 2010 by Ménard Alexis <menard@kde.org>
 *   Copyright 2010 by Marco Martin <mart@kde.org>

 *   This program is free software; you can redistribute it and/or modify
 *   it under the terms of the GNU Library General Public License as
 *   published by the Free Software Foundation; either version 2, or
 *   (at your option) any later version.
 *
 *   This program is distributed in the hope that it will be useful,
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *   GNU General Public License for more details
 *
 *   You should have received a copy of the GNU Library General Public
 *   License along with this program; if not, write to the
 *   Free Software Foundation, Inc.,
 *   51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 */

#include "datamodel.h"

#include <KDebug>

namespace Plasma
{

DataModel::DataModel(QObject* parent)
    : QAbstractItemModel(parent)
{
    setObjectName("DataModel");
}

DataModel::~DataModel()
{
}


void DataModel::setItems(const QVariantList &list)
{
    emit modelAboutToBeReset();

    //convert to vector, so data() will be O(1)
    m_items = list.toVector();

    int role = Qt::UserRole;
    m_roleNames.clear();
    foreach (QString roleName, list.first().value<QVariantMap>().keys()) {
        ++role;
        m_roleNames[role] = roleName.toLatin1();
    }
    setRoleNames(m_roleNames);

    //make the declarative view reload everything,
    //would be nice an incremental update but is not possible
    emit modelReset();
}

QVariant DataModel::data(const QModelIndex &index, int role) const
{
    if (!index.isValid() || index.column() > 0 ||
        index.row() < 0 || index.row() >= m_items.count()){
        return QVariant();
    }

    return m_items.value(index.row()).value<QVariantMap>().value(m_roleNames.value(role));
}

QVariant DataModel::headerData(int section, Qt::Orientation orientation, int role) const
{
    Q_UNUSED(section)
    Q_UNUSED(orientation)
    Q_UNUSED(role)

    return QVariant();
}

QModelIndex DataModel::index(int row, int column, const QModelIndex &parent) const
{
    if (parent.isValid() || column > 0 || row < 0 || row >= m_items.count()) {
        return QModelIndex();
    }

    return createIndex(row, column, 0);
}

QModelIndex DataModel::parent(const QModelIndex &child) const
{
    Q_UNUSED(child)

    return QModelIndex();
}

int DataModel::rowCount(const QModelIndex &parent) const
{
    //this is not a tree
    //TODO: make it possible some day?
    if (parent.isValid()) {
        return 0;
    }

    return m_items.count();
}

int DataModel::columnCount(const QModelIndex &parent) const
{
    if (parent.isValid()) {
        return 0;
    }

    return 1;
}

}
#include "datamodel.moc"