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;

        protected $gap_size;
        

        public function __construct($answertext = "", $points = 0.0, $order = 0)
        {
                parent::__construct($answertext, $points, $order, -1);
                $this->lowerBound = NULL;
                $this->upperBound = NULL;
                $this->gap_size = 0;
        }

// fau: fixGapFormula - allow formula evaluation when checking bounds, save bound text instead of number
        function setLowerBound($bound)
        {
                $boundvalue = $this->getNumericValueFromText($bound);
                $value = $this->getNumericValueFromAnswerText();

                if ($boundvalue === false || $boundvalue > $value)
                {
                        $this->lowerBound = $this->getAnswertext();
                }
                else
                {
                        $this->lowerBound = $bound;
                }
        }

        public function setUpperBound($bound)
        {
                $boundvalue = $this->getNumericValueFromText($bound);
                $value = $this->getNumericValueFromAnswerText();
                
                if ($boundvalue === false || $boundvalue < $value)
                {
                        $this->upperBound = $this->getAnswertext();
                }
                else
                {
                        $this->upperBound = $bound;
                }
        }
        
        protected function getNumericValueFromAnswerText()
        {
                return $this->getNumericValueFromText($this->getAnswertext());
        }

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

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

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

        public function setGapSize($gap_size)
        {
                $this->gap_size = $gap_size;
        }

        public function getGapSize()
        {
                return $this->gap_size;
        }
}