/****************************************************************************
**
** Copyright (C) 1992-2005 Trolltech AS. All rights reserved.
**
** This file is part of the sql module of the Qt Toolkit.
**
** This file may be distributed and/or modified under the terms of the
** GNU General Public License version 2 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file.
**
** See http://www.trolltech.com/pricing.html or email sales@trolltech.com for
** information about Qt Commercial License Agreements.
** See http://www.trolltech.com/gpl/ for GPL licensing information.
**
** Contact info@trolltech.com if any conditions of this licensing are
** not clear to you.
**
** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
**
****************************************************************************/

#ifndef QSQLQUERYMODEL_H
#define QSQLQUERYMODEL_H

#include <QtCore/qabstractitemmodel.h>
#include <QtSql/qsqldatabase.h>

class QSqlQueryModelPrivate;
class QSqlError;
class QSqlRecord;
class QSqlQuery;

class Q_SQL_EXPORT QSqlQueryModel: public QAbstractTableModel
{
    Q_OBJECT
    Q_DECLARE_PRIVATE(QSqlQueryModel)

public:
    explicit QSqlQueryModel(QObject *parent = 0);
    virtual ~QSqlQueryModel();

    int rowCount(const QModelIndex &parent = QModelIndex()) const;
    int columnCount(const QModelIndex &parent = QModelIndex()) const;
    QSqlRecord record(int row) const;
    QSqlRecord record() const;

    QVariant data(const QModelIndex &item, int role = Qt::DisplayRole) const;
    QVariant headerData(int section, Qt::Orientation orientation,
                        int role = Qt::DisplayRole) const;
    bool setHeaderData(int section, Qt::Orientation orientation, const QVariant &value,
                       int role = Qt::EditRole);

    bool insertColumns(int column, int count, const QModelIndex &parent = QModelIndex());
    bool removeColumns(int column, int count, const QModelIndex &parent = QModelIndex());

    void setQuery(const QSqlQuery &query);
    void setQuery(const QString &query, const QSqlDatabase &db = QSqlDatabase());
    QSqlQuery query() const;

    virtual void clear();

    QSqlError lastError() const;

    void fetchMore(const QModelIndex &parent = QModelIndex());
    bool canFetchMore(const QModelIndex &parent = QModelIndex()) const;

protected:
    virtual void queryChange();

    QModelIndex indexInQuery(const QModelIndex &item) const;
    void setLastError(const QSqlError &error);
    QSqlQueryModel(QSqlQueryModelPrivate &dd, QObject *parent = 0);
};

#endif // QSQLQUERYMODEL_H
