/* This file is part of the KDE project
   Copyright (C) 2006 Stefan Nikolaus <stefan.nikolaus@kdemail.net>

   This library 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 of the License, or (at your option) any later version.

   This library 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
   Library General Public License for more details.

   You should have received a copy of the GNU Library General Public License
   along with this library; see the file COPYING.LIB.  If not, write to
   the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
   Boston, MA 02110-1301, USA.
*/

#ifndef KSPREAD_SOLVER
#define KSPREAD_SOLVER

#include <gsl/gsl_multimin.h>

#include <kxmlguiclient.h>

#include <Cell.h>

#include <QObject>
#include <QVariantList>

namespace Calligra
{
namespace Sheets
{
namespace Plugins
{

/**
 * \class Solver
 * \brief Function Optimizer
 * \author Stefan Nikolaus <stefan.nikolaus@kdemail.net>
 */
class Solver : public QObject, public KXMLGUIClient
{
    Q_OBJECT

public:
    struct Parameters {
        QList<Cell> cells;
    };

    /**
     * Constructor.
     */
    Solver(QObject* parent, const QVariantList& args);

    /**
     * Destructor.
     */
    ~Solver();

    double evaluate(const gsl_vector* vector, void* parameters);

protected Q_SLOTS:
    /**
     * Called when the Solver action is triggered.
     * Opens the dialog.
     */
    void showDialog();

    /**
     * This method does the real work.
     * Uses the parameters of the dialog to optimize the given function.
     */
    void optimize();

private:
    Q_DISABLE_COPY(Solver)

    class Private;
    Private * const d;
};

} // namespace Plugins
} // namespace Sheets
} // namespace Calligra

#endif
