Make PlSet PHP-compatible...

[platal.git] / classes / plfilterorder.php

<?php
/***************************************************************************
 *  Copyright (C) 2003-2010 Polytechnique.org                              *
 *  http://opensource.polytechnique.org/                                   *
 *                                                                         *
 *  This program is free software; you can redistribute it and/or modify   *
 *  it under the terms of the GNU General Public License as published by   *
 *  the Free Software Foundation; either version 2 of the License, or      *
 *  (at your option) any later version.                                    *
 *                                                                         *
 *  This program 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 General Public License for more details.                           *
 *                                                                         *
 *  You should have received a copy of the GNU General Public License      *
 *  along with this program; if not, write to the Free Software            *
 *  Foundation, Inc.,                                                      *
 *  59 Temple Place, Suite 330, Boston, MA  02111-1307  USA                *
 ***************************************************************************/

abstract class PlFilterOrder
{
    protected $desc = false;
    public function __construct($desc = false)
    {
        $this->desc = $desc;
    }

    public function toggleDesc()
    {
        $this->desc = !$desc;
    }

    public function setDescending($desc = true)
    {
        $this->desc = $desc;
    }

    public function buildSort(PlFilter &$pf)
    {
        $sel = $this->getSortTokens($pf);
        if (!is_array($sel)) {
            $sel = array($sel);
        }
        if ($this->desc) {
            foreach ($sel as $k => $s) {
                $sel[$k] = $s . ' DESC';
            }
        }
        return $sel;
    }

    abstract protected function getSortTokens(PlFilter &$pf);
}

?>