File Source for fill_blanks.class.php

<?php
/*
DOKEOS - elearning and course management software
For a full list of contributors, see documentation/credits.html
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.
See "documentation/licence.html" more details.
Contact:
Dokeos
Rue des Palais 44 Paleizenstraat
B-1030 Brussels - Belgium
Tel. +32 (2) 211 34 56
*/
/**
* File containing the FillBlanks class.
* @package dokeos.exercise
* @author Eric Marguin
* @version $Id: admin.php 10680 2007-01-11 21:26:23Z pcool $
*/
if(!class_exists('FillBlanks')):
/**
CLASS FillBlanks
*
* This class allows to instantiate an object of type MULTIPLE_ANSWER (MULTIPLE CHOICE, MULTIPLE ANSWER),
* extending the class question
*
* @author Eric Marguin
* @package dokeos.exercise
***/
class FillBlanks extends Question {
static $typePicture = 'fill_in_blanks.gif';
static $explanationLangVar = 'FillBlanks';
/**
* Constructor
*/
function FillBlanks(){
parent::question();
$this -> type = FILL_IN_BLANKS;
}
/**
* function which redifines Question::createAnswersForm
* @param the formvalidator instance
*/
function createAnswersForm ($form) {
$defaults = array();
if(!empty($this->id))
{
$objAnswer = new answer($this->id);
$a_answer = explode('::', $objAnswer->selectAnswer(1));
$defaults['answer'] = $a_answer[0];
$a_weightings = explode(',',$a_answer[1]);
}
else
{
$defaults['answer'] = get_lang('DefaultTextInBlanks');
}
// javascript
echo '
<script type="text/javascript">
var firstTime = true;
function updateBlanks() {
field = document.getElementById("answer");
var answer = field.value;
var blanks = answer.match(/\[[^\]]*\]/g);
var fields = "<div class=\"row\"><div class=\"label\">'.get_lang('Weighting').'</div><div class=\"formw\"><table>";
if(blanks!=null){
for(i=0 ; i<blanks.length ; i++){
if(document.getElementById("weighting["+i+"]"))
value = document.getElementById("weighting["+i+"]").value;
else
value = "10";
fields += "<tr><td>"+blanks[i]+"</td><td><input style=\"margin-left: 0em;\" size=\"5\" value=\""+value+"\" type=\"text\" id=\"weighting["+i+"]\" name=\"weighting["+i+"]\" /></td></tr>";
}
}
document.getElementById("blanks_weighting").innerHTML = fields + "</table></div></div>";
if(firstTime){
firstTime = false;
';
if(count($a_weightings)>0)
{
foreach($a_weightings as $i=>$weighting)
{
echo 'document.getElementById("weighting['.$i.']").value = "'.$weighting.'";';
}
}
echo '}
}
window.onload = updateBlanks;
</script>
';
// answer
$form -> addElement ('html', '<br /><br /><div class="row"><div class="label"></div><div class="formw">'.get_lang('TypeTextBelow').', '.get_lang('And').' '.get_lang('UseTagForBlank').'</div></div>');
$form -> addElement ('textarea', 'answer',get_lang('Answer'),'id="answer" cols="65" rows="6" onkeyup="updateBlanks(this)"');
$form -> addRule ('answer',get_lang('GiveText'),'required');
$form -> addRule ('answer',get_lang('DefineBlanks'),'regex','/\[.*\]/');
$form -> addElement('html','<div id="blanks_weighting"></div>');
$form -> setDefaults($defaults);
}
/**
* abstract function which creates the form to create / edit the answers of the question
* @param the formvalidator instance
*/
function processAnswersCreation($form)
{
$answer = $form -> getSubmitValue('answer');
//remove the :: eventually written by the user
$answer = str_replace('::','',$answer);
// get the blanks weightings
$nb = preg_match_all('/\[[^\]]*\]/', $answer, $blanks);
if(isset($_GET['editQuestion'])){
$this -> weighting = 0;
}
if($nb>0)
{
$answer .= '::';
for($i=0 ; $i<$nb ; ++$i)
{
$answer .= $form -> getSubmitValue('weighting['.$i.']').',';
$this -> weighting += $form -> getSubmitValue('weighting['.$i.']');
}
$answer = substr($answer,0,-1);
}
$this -> save();
$objAnswer = new answer($this->id);
$objAnswer->createAnswer($answer,0,'',0,'');
$objAnswer->save();
}
}
endif;
?>

Source for file fill_blanks.class.php