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/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the examples of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the either Technology Preview License Agreement or the
** Beta Release License Agreement.
**
** GNU Lesser General Public License Usage
** Alternatively, 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 1.0, included in the file LGPL_EXCEPTION.txt in this
** package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
** If you are unsure which license is appropriate for your use, please
** contact the sales department at http://qt.nokia.com/contact.
** $QT_END_LICENSE$
**
****************************************************************************/

#include <QtSql>

#include "editablesqlmodel.h"

EditableSqlModel::EditableSqlModel(QObject *parent)
    : QSqlQueryModel(parent)
{
}

//! [0]
Qt::ItemFlags EditableSqlModel::flags(
        const QModelIndex &index) const
{
    Qt::ItemFlags flags = QSqlQueryModel::flags(index);
    if (index.column() == 1 || index.column() == 2)
        flags |= Qt::ItemIsEditable;
    return flags;
}
//! [0]

//! [1]
bool EditableSqlModel::setData(const QModelIndex &index, const QVariant &value, int /* role */)
{
    if (index.column() < 1 || index.column() > 2)
        return false;

    QModelIndex primaryKeyIndex = QSqlQueryModel::index(index.row(), 0);
    int id = data(primaryKeyIndex).toInt();

    clear();

    bool ok;
    if (index.column() == 1) {
        ok = setFirstName(id, value.toString());
    } else {
        ok = setLastName(id, value.toString());
    }
    refresh();
    return ok;
}
//! [1]

void EditableSqlModel::refresh()
{
    setQuery("select * from person");
    setHeaderData(0, Qt::Horizontal, QObject::tr("ID"));
    setHeaderData(1, Qt::Horizontal, QObject::tr("First name"));
    setHeaderData(2, Qt::Horizontal, QObject::tr("Last name"));
}

//! [2]
bool EditableSqlModel::setFirstName(int personId, const QString &firstName)
{
    QSqlQuery query;
    query.prepare("update person set firstname = ? where id = ?");
    query.addBindValue(firstName);
    query.addBindValue(personId);
    return query.exec();
}
//! [2]

bool EditableSqlModel::setLastName(int personId, const QString &lastName)
{
    QSqlQuery query;
    query.prepare("update person set lastname = ? where id = ?");
    query.addBindValue(lastName);
    query.addBindValue(personId);
    return query.exec();
}