You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
229 lines
10 KiB
229 lines
10 KiB
11 years ago
|
<?php
|
||
|
|
/* For licensing terms, see /license.txt */
|
||
|
|
/**
|
||
|
|
*
|
||
|
|
* Class CalculatedAnswer
|
||
|
|
*
|
||
|
|
* @author Imanol Losada
|
||
|
|
* @package chamilo.exercise
|
||
|
|
**/
|
||
|
|
class CalculatedAnswer extends Question
|
||
|
|
{
|
||
|
|
static $typePicture = 'calculated_answer.png';
|
||
|
|
static $explanationLangVar = 'CalculatedAnswer';
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Constructor
|
||
|
|
*/
|
||
|
|
public function CalculatedAnswer()
|
||
|
|
{
|
||
|
|
parent::question();
|
||
|
|
$this -> type = CALCULATED_ANSWER;
|
||
|
|
$this -> isContent = $this-> getIsContent();
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* function which redefines Question::createAnswersForm
|
||
|
|
* @param the formvalidator instance
|
||
|
|
*/
|
||
|
|
function createAnswersForm($form)
|
||
|
|
{
|
||
|
|
$defaults = array();
|
||
|
|
|
||
|
|
if (!empty($this->id)) {
|
||
|
|
$objAnswer = new answer($this->id);
|
||
|
|
$preArray = explode('@@', $objAnswer->selectAnswer(1));
|
||
|
|
$defaults['formula'] = array_pop($preArray);
|
||
|
|
|
||
|
|
$defaults['answer'] = array_shift($preArray);
|
||
|
|
$defaults['answer'] = preg_replace("/\[.*\]/", "", $defaults['answer']);
|
||
|
|
|
||
|
|
$defaults['weighting'] = $this->weighting;
|
||
|
|
|
||
|
|
} else {
|
||
|
|
$defaults['answer'] = get_lang('DefaultTextInBlanks');
|
||
|
|
}
|
||
|
|
$lowestValue = "1.00";
|
||
|
|
$highestValue = "20.00";
|
||
|
|
|
||
|
|
// javascript //
|
||
|
|
echo '<script>
|
||
|
|
|
||
|
|
function parseTextNumber(textNumber, floatValue) {
|
||
|
|
if (textNumber.indexOf(".") > -1) {
|
||
|
|
textNumber = parseFloat(textNumber);
|
||
|
|
floatValue.exists = "true";
|
||
|
|
} else {
|
||
|
|
textNumber = parseInt(textNumber);
|
||
|
|
}
|
||
|
|
return textNumber;
|
||
|
|
}
|
||
|
|
|
||
|
|
function updateRandomValue(element) {
|
||
|
|
// "floatValue" helps to distinguish between an integer (10) and a float with all 0 decimals (10.00)
|
||
|
|
var floatValue = { exists: "false" };
|
||
|
|
var index = (element.name).match(/\[[^\]]*\]/g);
|
||
|
|
var lowestValue = parseTextNumber(document.getElementById("lowestValue"+index).value, floatValue);
|
||
|
|
var highestValue = parseTextNumber(document.getElementById("highestValue"+index).value, floatValue);
|
||
|
|
var result = Math.random() * (highestValue - lowestValue) + lowestValue;
|
||
|
|
if (floatValue.exists == "true") {
|
||
|
|
result = parseFloat(result).toFixed(2);
|
||
|
|
} else {
|
||
|
|
result = parseInt(result);
|
||
|
|
}
|
||
|
|
document.getElementById("randomValue"+index).innerHTML = "'.get_lang("ExampleValue").': " + result;
|
||
|
|
}
|
||
|
|
|
||
|
|
function FCKeditor_OnComplete(editorInstance) {
|
||
|
|
if (window.attachEvent) {
|
||
|
|
editorInstance.EditorDocument.attachEvent("onkeyup", updateBlanks) ;
|
||
|
|
} else {
|
||
|
|
editorInstance.EditorDocument.addEventListener("keyup", updateBlanks, true);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
var firstTime = true;
|
||
|
|
|
||
|
|
function updateBlanks() {
|
||
|
|
if (firstTime) {
|
||
|
|
field = document.getElementById("answer");
|
||
|
|
var answer = field.value;
|
||
|
|
} else {
|
||
|
|
var oEditor = FCKeditorAPI.GetInstance("answer");
|
||
|
|
//var answer = oEditor.GetXHTML(true);
|
||
|
|
var answer = oEditor.EditorDocument.body.innerHTML;
|
||
|
|
}
|
||
|
|
var blanks = answer.match(/\[[^\]]*\]/g);
|
||
|
|
var fields = "<div class=\"control-group\"><label class=\"control-label\">'.get_lang('VariableRanges').'</label><div class=\"controls\"><table>";
|
||
|
|
if (blanks!=null) {
|
||
|
|
if (typeof updateBlanks.randomValues === "undefined") {
|
||
|
|
updateBlanks.randomValues = [];
|
||
|
|
}
|
||
|
|
for (i=0 ; i<blanks.length ; i++){
|
||
|
|
if (document.getElementById("lowestValue["+i+"]") && document.getElementById("highestValue["+i+"]")) {
|
||
|
|
lowestValue = document.getElementById("lowestValue["+i+"]").value;
|
||
|
|
highestValue = document.getElementById("highestValue["+i+"]").value;
|
||
|
|
} else {
|
||
|
|
lowestValue = '.$lowestValue.'.toFixed(2);
|
||
|
|
highestValue = '.$highestValue.'.toFixed(2);
|
||
|
|
for (j=0; j<blanks.length; j++) {
|
||
|
|
updateBlanks.randomValues[j] = parseFloat(Math.random() * (highestValue - lowestValue) + lowestValue).toFixed(2);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
fields += "<tr><td><label>"+blanks[i]+"</label></td><td><input class=\"span1\" style=\"margin-left: 0em;\" size=\"5\" value=\""+lowestValue+"\" type=\"text\" id=\"lowestValue["+i+"]\" name=\"lowestValue["+i+"]\" onblur=\"updateRandomValue(this)\"/></td><td><input class=\"span1\" style=\"margin-left: 0em; width:80px;\" size=\"5\" value=\""+highestValue+"\" type=\"text\" id=\"highestValue["+i+"]\" name=\"highestValue["+i+"]\" onblur=\"updateRandomValue(this)\"/></td><td><label class=\"span3\" id=\"randomValue["+i+"]\"/>'.get_lang('ExampleValue').': "+updateBlanks.randomValues[i]+"</label></td></tr>";
|
||
|
|
}
|
||
|
|
}
|
||
|
|
document.getElementById("blanks_weighting").innerHTML = fields + "</table></div></div>";
|
||
|
|
if (firstTime) {
|
||
|
|
firstTime = false;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
window.onload = updateBlanks;
|
||
|
|
|
||
|
|
</script>';
|
||
|
|
|
||
|
|
// answer
|
||
|
|
$form->addElement('label', null, '<br /><br />'.get_lang('TypeTextBelow').', '.get_lang('And').' '.get_lang('UseTagForBlank'));
|
||
|
|
$form->addElement('html_editor', 'answer', '<img src="../img/fill_field.png">','id="answer" cols="122" rows="6" onkeyup="javascript: updateBlanks(this);"', array('ToolbarSet' => 'TestQuestionDescription', 'Width' => '100%', 'Height' => '350'));
|
||
|
|
|
||
|
|
$form->addRule('answer', get_lang('GiveText'),'required');
|
||
|
|
$form->addRule('answer', get_lang('DefineBlanks'),'regex','/\[.*\]/');
|
||
|
|
|
||
|
|
$form->addElement('label', null, get_lang('IfYouWantOnlyIntegerValuesWriteBothLimitsWithoutDecimals'));
|
||
|
|
$form->addElement('html', '<div id="blanks_weighting"></div>');
|
||
|
|
|
||
|
|
$form->addElement('label', null, get_lang('FormulaExample').': √<span style="text-decoration:overline;"> x ÷ y </span> × e <sup>(ln(pi))</sup> = sqrt([x]/[y])*(e^(ln(pi)))');
|
||
|
|
$form->addElement('text', 'formula', get_lang('Formula'), array('id' => 'formula', 'class' => 'span4'));
|
||
|
|
$form->addRule('formula', get_lang('GiveFormula'), 'required');
|
||
|
|
|
||
|
|
$form->addElement('text', 'weighting', get_lang('Weighting'), array('id' => 'weighting', 'class' => 'span1'));
|
||
|
|
$form->setDefaults(array('weighting' => '10'));
|
||
|
|
|
||
|
|
$form->addElement('text', 'answerVariations', get_lang('AnswerVariations'), array('class' => 'span1'));
|
||
|
|
$form->addRule('answerVariations', get_lang('GiveAnswerVariations'),'required');
|
||
|
|
$form->setDefaults(array('answerVariations' => '1'));
|
||
|
|
|
||
|
|
global $text, $class;
|
||
|
|
// setting the save button here and not in the question class.php
|
||
|
|
$form->addElement('style_submit_button', 'submitQuestion', $text, 'class="'.$class.'"');
|
||
|
|
|
||
|
|
if (!empty($this->id)) {
|
||
|
|
$form -> setDefaults($defaults);
|
||
|
|
} else {
|
||
|
|
if ($this->isContent == 1) {
|
||
|
|
$form->setDefaults($defaults);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* abstract function which creates the form to create / edit the answers of the question
|
||
|
|
* @param FormValidator $form
|
||
|
|
*/
|
||
|
|
function processAnswersCreation($form)
|
||
|
|
{
|
||
|
|
global $charset;
|
||
|
|
$answer = $form->getSubmitValue('answer');
|
||
|
|
$formula = $form->getSubmitValue('formula');
|
||
|
|
$lowestValues = $form->getSubmitValue('lowestValue');
|
||
|
|
$highestValues = $form->getSubmitValue('highestValue');
|
||
|
|
$answerVariations = $form->getSubmitValue('answerVariations');
|
||
|
|
$this->weighting = $form->getSubmitValue('weighting');
|
||
|
|
//Remove previous answers
|
||
|
|
Database::delete("c_quiz_answer", array('question_id = ?' => $this->id));
|
||
|
|
// Create as many answers as $answerVariations
|
||
|
|
for ($j=0 ; $j < $answerVariations; $j++) {
|
||
|
|
$auxAnswer = $answer;
|
||
|
|
$auxFormula = $formula;
|
||
|
|
$nb = preg_match_all('/\[[^\]]*\]/', $auxAnswer, $blanks);
|
||
|
|
if ($nb > 0) {
|
||
|
|
for ($i=0 ; $i < $nb; ++$i) {
|
||
|
|
$blankItem = $blanks[0][$i];
|
||
|
|
$replace = array("[", "]");
|
||
|
|
$newBlankItem = str_replace($replace, "", $blankItem);
|
||
|
|
$newBlankItem = "[".trim($newBlankItem)."]";
|
||
|
|
$randomValue = mt_rand($lowestValues[$i],$highestValues[$i]);
|
||
|
|
//$randomValue = mt_rand($lowestValues[$i]*100,$highestValues[$i]*100)/100;
|
||
|
|
$auxAnswer = str_replace($blankItem, $randomValue, $auxAnswer);
|
||
|
|
$auxFormula = str_replace($blankItem, $randomValue, $auxFormula);
|
||
|
|
}
|
||
|
|
require_once(api_get_path(LIBRARY_PATH).'evalmath.class.php');
|
||
|
|
$math = new EvalMath();
|
||
|
|
$result = $math->evaluate($auxFormula);
|
||
|
|
$result = number_format($result, 2, ".", "");
|
||
|
|
// Remove decimal trailing zeros
|
||
|
|
$result = rtrim($result, "0");
|
||
|
|
// If it is an integer (ends in .00) remove the decimal point
|
||
|
|
if (mb_substr($result, -1) === ".") {
|
||
|
|
$result = str_replace(".", "", $result);
|
||
|
|
}
|
||
|
|
// Attach formula
|
||
|
|
$auxAnswer .= " [".$result."]@@".$formula;
|
||
|
|
}
|
||
|
|
$this->save();
|
||
|
|
$objAnswer = new answer($this->id);
|
||
|
|
$objAnswer->createAnswer($auxAnswer, 1, '', $this->weighting, array());
|
||
|
|
$objAnswer->position = array();
|
||
|
|
$objAnswer->save();
|
||
|
|
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @param null $feedback_type
|
||
|
|
* @param null $counter
|
||
|
|
* @param null $score
|
||
|
|
* @return null|string
|
||
|
|
*/
|
||
|
|
function return_header($feedback_type = null, $counter = null, $score = null)
|
||
|
|
{
|
||
|
|
$header = parent::return_header($feedback_type, $counter, $score);
|
||
|
|
$header .= '<table class="'.$this->question_table_class .'">
|
||
|
|
<tr>
|
||
|
|
<th>'.get_lang("Answer").'</th>
|
||
|
|
</tr>';
|
||
|
|
return $header;
|
||
|
|
}
|
||
|
|
}
|