/**
* Calls servlet to evaluate the program in order to obtain the variables of the question.
*/
function wrsqz_getInfo($questionType, $questionId, $data) {
$varArray = wrsqz_getVars($data['text']);
$vars = implode(',', $varArray);
if (empty($vars)) {
return array('' => '');
}
if (array_key_exists('function',$data)) {
$function=$data['function'];
} else {
$function='var';
}
$postdata = array(
'mode' => 'id',
'function' => $function,
'id' => $data['wiris']->idcache,
'md5' => $data['wiris']->md5,
'seed' => $data['seed'],
'var' => $vars
);
// We do a first attempt to get the variables without sending the whole program because it might be cached.
$msg = wrsqz_openServlet($postdata);
$params = explode(';', $msg);
if (trim($params[0]) == 'false') {
if (array_key_exists('problem',$data)) {
// Get the program from the parameter
$problem=$data['problem'];
}
if (!isset($problem)) {
// Get the program from the database
$problem = wrsqz_getProgram($questionType, $questionId);
if ($problem===false) {
unset($problem);
}
}
if (!isset($problem)) {
// if it is not set, exit with error
return false;
}
$postdata = array(
'mode' => 'problem',
'function' => $function,
'md5' => $data['wiris']->md5,
'seed' => $data['seed'],
'var' => $vars,
'problem' => $problem
);
$msg = wrsqz_openServlet($postdata);
$params = explode(';', $msg);
}
$params_length = count($params);
if ($params_length < 2) {
return array();
}
if ($params_length < 3) {
return array('id' => $params[1]);
}
$newVarArray = explode(':', $params[2]);
$result = array();
$i = 0;
foreach ($varArray as $key => $value) {
$varContent = explode('&', trim($newVarArray[$i]));
if (count($varContent) >= 2) {
$varContent[1] = wrsqz_trimQuotes($varContent[1], '"');
$result[$key] = urldecode($varContent[1]);
++$i;
}
}
wrsqz_filterImages($result);
return array(
'vars' => $result,
'id' => $params[1]
);
}
function wrsqz_set_data($questionType, $dbType, &$mform, &$question) {
$default_values = array();
//common options
if(isset($question->options->wiris->options)){
$options = $question->options->wiris->options;
if(isset($options['wirisCASForComputations'])){
$default_values['wirisCASForComputations'] = $options['wirisCASForComputations'];
}
if(isset($options['hiddenInitialCASValue'])){
$default_values['hiddenInitialCASValue'] = $options['hiddenInitialCASValue'];
}
}
//question-type specific options
if ($questionType == 'shortanswer' && isset($question) && isset($question->options) && isset($question->options->wiris) && isset($question->options->wiris->eqoption)) {
$default_values['wirisEditor'] = '';
mb_parse_str($question->options->wiris->eqoption, $eqoptionArray);
if (isset($eqoptionArray['editor']) && $eqoptionArray['editor'] == 'true') {
$default_values['wirisEditor'] = '1';
}
if (isset($eqoptionArray['multipleAnswers']) && $eqoptionArray['multipleAnswers'] == 'true') {
$default_values['multipleAnswers'] = '1';
}
/*if (isset($eqoptionArray['wirisCASForComputations']) && $eqoptionArray['wirisCASForComputations'] == 'true') {
$default_values['wirisCASForComputations'] = '1';
}*/
if (isset($eqoptionArray['testFunction'])){
//set testFunctionNames where their associated answers are
$index = 0;
foreach ($question->options->answers as $answer){
if (isset($eqoptionArray['testFunction'][$answer->id])){
$testFunctionNameIndex = $eqoptionArray['testFunction'][$answer->id];
$default_values['testFunctionName['.$index.']'] = $eqoptionArray['testFunctionName'][$testFunctionNameIndex];
unset($eqoptionArray['testFunctionName'][$testFunctionNameIndex]);
}
$index++;
}
//set test functions with no associated answer.
foreach($eqoptionArray['testFunctionName'] as $key => $value){
$default_values['testFunctionName['.$index.']'] = $value;
$index++;
}
}else if (isset($eqoptionArray['testFunctionName'])){
//Backwards compatibility for old WIRIS quizzes (didn't have testFunction attribute).
foreach ($eqoptionArray['testFunctionName'] as $index => $value){
$default_values['testFunctionName['.$index.']'] = $eqoptionArray['testFunctionName'][$index];
}
}
}else if($questionType == 'multianswer' && isset($question)
&& isset($question->options) && isset($question->options->wiris)
&& isset($question->options->wiris->eqoption)){
mb_parse_str($question->options->wiris->eqoption, $eqoptionArray);
if (isset($eqoptionArray['editor']) && $eqoptionArray['editor'] == 'true') {
$default_values['wirisEditor'] = '1';
} else {
$default_values['wirisEditor'] = '';
}
}
if (isset($question) && isset($question->options) && isset($question->options->wiris) && !empty($question->options->wiris->override)) {
if ($questionType == 'multichoice') {
$overrideList = explode(';', $question->options->wiris->override);
foreach ($overrideList as $key => $value) {
$default_values['gradeOverride[' . $key . ']'] = $value;
}
}else if ($questionType == 'truefalse') {
$overrideList = explode(';', $question->options->wiris->override);
$default_values['wirisAnswer'] = $overrideList[0];
}
}
global $CFG;
$pos = ($mform->_elementIndex['hiddenCASValue']);
$value = trim($mform->_elements[$pos]->_attributes['value']);
$selectedLang = optional_param('WIRISCASLang','',PARAM_ALPHA);
$availableLangs = wrsqz_getAvailableCASLangs();
if (!empty($value)) {
$program = $value;
$sessionLang = wrsqz_CASLanguageFromSession($program);
if(in_array($selectedLang, $availableLangs) && $selectedLang != $sessionLang){
//We have to translate the WIRIS session
$translation = wrsqz_translateCASSession($program,$selectedLang);
if($translation !==false){
$program = $translation[0];
$CASLang = $selectedLang;
//Rearrange all form fields with the new named variables (at the end of the function).
}else{
//We couldn't translate the program. Do nothing
$CASLang = $sessionLang;
}
}else{
$CASLang = $sessionLang;
}
}else{
if (isset($question) && isset($question->id)
&& ($program = wrsqz_getProgram($questionType, $question->id)) !== false
&& !empty($program)) {
$CASLang = wrsqz_CASLanguageFromSession($program);
}else {
$CASLang = wrsqz_currentCASLanguage();
$program = wrsqz_getDefaultCASCode($CASLang);
}
}
$default_values['htmlWirisEditor'] = '<applet name="WirisCASApplet" code="' . wrsqz_getCASClass($CASLang) . '" codebase="' . $CFG->wiriscascodebase . '" archive="' . wrsqz_getCASArchive($CASLang) . '" height="450" WIDTH="100%">';
$default_values['htmlWirisEditor'] .= '<param name="version" value="2.0"/>';
$default_values['htmlWirisEditor'] .= '<param name="command" value="false"/>';
$default_values['htmlWirisEditor'] .= '<param name="commands" value="false"/>';
$default_values['htmlWirisEditor'] .= '<param name="interface" value="false"/>';
$default_values['htmlWirisEditor'] .= '<param name="XMLinitialText" value="' . htmlentities($program, ENT_QUOTES, 'UTF-8') . '"/>';
$default_values['htmlWirisEditor'] .= '</applet>';
$default_values['WIRISCASLang'] = $CASLang;
// defined only because we call wrsqz_wirisQuizzesUsed
$default_values['hiddenCASValue'] = $program;
$question = (object)(array_merge((array)$question, $default_values));
if(isset($translation) && ! empty($translation[1])){
//If WIRIS CAS program had to be translated, there may be references (#a) to
//old variable names, so replace them.
wrsqz_replaceVarReferencesInFlatQuestion($questionType, $question, $translation[1]);
wrsqz_replaceVarReferencesInForm($questionType, $mform, $translation[1]);
}
// If uses wiris quizzes, display advanced otherwise the program
// is lost if the advanced button is never clicked
if (wrsqz_wirisQuizzesUsed($question)) {
$mform->setShowAdvanced(1);
}
}