/* This file is part of the KDE project
   Copyright (C) 2006 Tomas Mecir <mecirt@gmail.com>

   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; only
   version 2 of the License.

   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 CALLIGRA_SHEETS_SORT_MANIPULATOR
#define CALLIGRA_SHEETS_SORT_MANIPULATOR

#include "CellStorage.h"
#include "DataManipulators.h"

namespace Calligra
{
namespace Sheets
{
class CellStorage;

/**
 * \ingroup Commands
 * \brief Sorts the values in a cell range.
 */
class CALLIGRA_SHEETS_COMMON_EXPORT SortManipulator : public AbstractDFManipulator
{
public:
    SortManipulator();
    virtual ~SortManipulator();

    virtual bool process(Element* element);

    /** true if rows are to be sorted, false if columns are */
    void setSortRows(bool v) {
        m_rows = v;
    }
    /** skip first row/column, as it contains headers */
    void setSkipFirst(bool v) {
        m_skipfirst = v;
    }
    /** set whether cell formats should be moved with data */
    void setCopyFormat(bool v) {
        setChangeFormat(v);
    }
    /** set whether we will use a custom list */
    void setUseCustomList(bool v) {
        m_usecustomlist = v;
    }
    /** set a custom list that will be used */
    void setCustomList(QStringList l) {
        m_customlist = l;
    }

    /** 
     * Adds a sort criterion.
     * Sort criteria are used in order in which they're added.
     * \param index the column/row index. Indexed from 0.
     * \param order sort order (ascending/descending)
     * \param caseSensitivity case sensitivity
     */
    void addCriterion(int index, Qt::SortOrder order, Qt::CaseSensitivity caseSensitivity);
    void clearCriteria();

protected:
    virtual bool preProcessing();
    virtual bool postProcessing();
    virtual Value newValue(Element *element, int col, int row,
                           bool *parse, Format::Type *fmtType);
    virtual Style newFormat(Element *element, int col, int row);

    /** sort the data, filling the "sorted" structure */
    void sort(Element *element);
    bool shouldReorder(Element *element, int first, int second);

    bool m_rows, m_skipfirst, m_usecustomlist;
    QStringList m_customlist;

    struct Criterion {
        int index;
        Qt::SortOrder order;
        Qt::CaseSensitivity caseSensitivity;
    };
    QList<Criterion> m_criteria;

    /** sorted order - which row/column will move to where */
    QMap<int, int> sorted;

    CellStorage* m_cellStorage; // temporary
    QHash<Cell, Style> m_styles; // temporary
    QHash<Cell, QString> m_formulas; // temporary; encoded formulas
};

} // namespace Sheets
} // namespace Calligra

#endif  // CALLIGRA_SHEETS_SORT_MANIPULATOR
