NCTableSort.h

/*
  Copyright (C) 2020 SUSE LLC
  This library is free software; you can redistribute it and/or modify
  it under the terms of the GNU Lesser General Public License as
  published by the Free Software Foundation; either version 2.1 of the
  License, or (at your option) version 3.0 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 Lesser General Public
  License for more details. You should have received a copy of the GNU
  Lesser General Public License along with this library; if not, write
  to the Free Software Foundation, Inc., 51 Franklin Street, Fifth
  Floor, Boston, MA 02110-1301 USA
*/


#ifndef NCTableSort_h
#define NCTableSort_h

#include <string>
#include <vector>
#include <yui/YItem.h>

class NCTableLine;


class NCTableSortStrategyBase
{
public:

    NCTableSortStrategyBase( int sortCol = 0, bool reverse = false )
        : _sortCol( sortCol )
        , _reverse( reverse )
        {}

    virtual ~NCTableSortStrategyBase()
        {}

    virtual void sort( YItemIterator begin, YItemIterator end ) = 0;


    int  sortCol() const                { return _sortCol;    }
    void setSortCol( int col )          { _sortCol = col;     }

    bool reverse() const        { return _reverse;    }
    void setReverse( bool reverse ) { _reverse = reverse; }


private:

    int  _sortCol;
    bool _reverse;
};


class NCTableSortDefault: public NCTableSortStrategyBase
{
public:
    virtual void sort( YItemIterator begin, YItemIterator end ) override;

private:

    class Compare
    {
    public:
    Compare( int sortCol, bool reverse )
        : _sortCol( sortCol )
            , _reverse( reverse )
        {}

    bool operator() ( YItem * item1, YItem * item2 ) const;

    protected:

    std::wstring smartSortKey( YItem * item ) const;

    long long toNumber( const std::wstring& str, bool * ok ) const;


        // Data members

    const int  _sortCol;
    const bool _reverse;
    };

};


#endif  // NCTableSort_h