/****************************************************************************
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** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
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** This file is part of the QtSql module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
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** use the contact form at http://qt.digia.com/contact-us.
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** 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
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** packaging of this file.  Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
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** 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
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****************************************************************************/

#ifndef QSQLQUERYMODEL_H
#define QSQLQUERYMODEL_H

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

QT_BEGIN_HEADER

QT_BEGIN_NAMESPACE


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:
    void beginInsertRows(const QModelIndex &parent, int first, int last);
    void endInsertRows();

    void beginRemoveRows(const QModelIndex &parent, int first, int last);
    void endRemoveRows();

    void beginInsertColumns(const QModelIndex &parent, int first, int last);
    void endInsertColumns();

    void beginRemoveColumns(const QModelIndex &parent, int first, int last);
    void endRemoveColumns();

    void beginResetModel();
    void endResetModel();
    virtual void queryChange();

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

QT_END_NAMESPACE

QT_END_HEADER

#endif // QSQLQUERYMODEL_H
