class.assAnswerCloze.php

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<?php
/* Copyright (c) 1998-2013 ILIAS open source, Extended GPL, see docs/LICENSE */

require_once './Modules/TestQuestionPool/classes/class.assAnswerSimple.php';
require_once './Modules/Test/classes/inc.AssessmentConstants.php';

class assAnswerCloze extends ASS_AnswerSimple 
{
        protected $lowerBound;

        protected $upperBound;

        public function __construct($answertext = "", $points = 0.0, $order = 0)
        {
                parent::__construct($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();
                }
        }

        public 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)));
        }

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

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