class.assAnswerCloze.php

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<?php
 /*
   +----------------------------------------------------------------------------+
   | ILIAS open source                                                          |
   +----------------------------------------------------------------------------+
   | Copyright (c) 1998-2001 ILIAS open source, University of Cologne           |
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   | 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.                     |
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   | 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          |
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   | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | 
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*/

include_once "./Modules/TestQuestionPool/classes/class.assAnswerSimple.php";
include_once "./Modules/Test/classes/inc.AssessmentConstants.php";

class assAnswerCloze extends ASS_AnswerSimple 
{
        var $lowerBound;

        var $upperBound;

        function assAnswerCloze($answertext = "", $points = 0.0, $order = 0)
        {
                $this->ASS_AnswerSimple($answertext, $points, $order, -1);
                $this->lowerBound = NULL;
                $this->upperBound = NULL;
        }

        function setLowerBound($bound)
        {
                $bound = str_replace(",", ".", $bound); 
                if ($bound > $this->getAnswertext() || strlen($bound) == 0) 
                {
                        $bound = $this->getAnswertext();
                }
                
                if ( is_numeric($bound) )
                {
                        $this->lowerBound = $bound;
                }
                else
                {
                        // unreachable
                        // $this->lowerBound = $this->getAnswertext();
                }
        }

        function setUpperBound($bound)
        {
                $bound = str_replace(",", ".", $bound);

                $value = $this->getNumericValueFromAnswerText();
                
                if ($bound < $value || strlen($bound) == 0)
                {
                        $bound = $value;
                }
                
                if ( is_numeric($bound) )
                {
                        $this->upperBound = $bound;
                }
                else
                {
                        $this->upperBound = $this->getAnswertext();
                }
        }

        protected function getNumericValueFromAnswerText()
        {
                include_once("./Services/Math/classes/class.EvalMath.php");
                $eval = new EvalMath();
                $eval->suppress_errors = true;
                return $eval->e(str_replace(",", ".", ilUtil::stripSlashes($this->getAnswertext(), FALSE)));
        }

        function getLowerBound()
        {
                return $this->lowerBound;
        }
        
        function getUpperBound()
        {
                return $this->upperBound;
        }
}