/**
* Get content of uploaded file.
* @param $element name of file upload element
* @return mixed false in case of failure, string if ok
*/
function get_file_content($elname)
{
if (!$this->is_submitted() or !$this->is_validated()) {
return false;
}
if (!$this->_form->elementExists($elname)) {
return false;
}
if (empty($this->_upload_manager->files[$elname]['clear'])) {
return false;
}
if (empty($this->_upload_manager->files[$elname]['tmp_name'])) {
return false;
}
$data = "";
$file = @fopen($this->_upload_manager->files[$elname]['tmp_name'], "rb");
if ($file) {
while (!feof($file)) {
$data .= fread($file, 1024);
// TODO: do we really have to do this?
}
fclose($file);
return $data;
} else {
return false;
}
}
/**
* Add question-type specific form fields.
*
* @param MoodleQuickForm $mform the form being built.
*/
function definition_inner(&$mform)
{
global $QTYPES;
$this->qtypeobj =& $QTYPES[$this->qtype()];
$label = get_string("sharedwildcards", "qtype_datasetdependent");
$mform->addElement('hidden', 'initialcategory', 1);
$html2 = $this->qtypeobj->print_dataset_definitions_category($this->question);
$mform->insertElementBefore($mform->createElement('static', 'listcategory', $label, $html2), 'name');
$addfieldsname = 'updatecategory';
$addstring = get_string("updatecategory", "qtype_calculated");
$mform->registerNoSubmitButton($addfieldsname);
$mform->insertElementBefore($mform->createElement('submit', $addfieldsname, $addstring), 'listcategory');
$repeated = array();
$repeated[] =& $mform->createElement('header', 'answerhdr', get_string('answerhdr', 'qtype_calculated', '{no}'));
$repeated[] =& $mform->createElement('text', 'answers', get_string('correctanswerformula', 'quiz') . '=', array('size' => 50));
$repeatedoptions['answers']['type'] = PARAM_NOTAGS;
$creategrades = get_grade_options();
$gradeoptions = $creategrades->gradeoptions;
$repeated[] =& $mform->createElement('select', 'fraction', get_string('grade'), $gradeoptions);
$repeatedoptions['fraction']['default'] = 0;
$repeated[] =& $mform->createElement('text', 'tolerance', get_string('tolerance', 'qtype_calculated'));
$repeatedoptions['tolerance']['type'] = PARAM_NUMBER;
$repeatedoptions['tolerance']['default'] = 0.01;
$repeated[] =& $mform->createElement('select', 'tolerancetype', get_string('tolerancetype', 'quiz'), $this->qtypeobj->tolerance_types());
$repeated[] =& $mform->createElement('select', 'correctanswerlength', get_string('correctanswershows', 'qtype_calculated'), range(0, 9));
$repeatedoptions['correctanswerlength']['default'] = 2;
$answerlengthformats = array('1' => get_string('decimalformat', 'quiz'), '2' => get_string('significantfiguresformat', 'quiz'));
$repeated[] =& $mform->createElement('select', 'correctanswerformat', get_string('correctanswershowsformat', 'qtype_calculated'), $answerlengthformats);
$repeated[] =& $mform->createElement('htmleditor', 'feedback', get_string('feedback', 'quiz'), array('course' => $this->coursefilesid));
$repeatedoptions['feedback']['type'] = PARAM_RAW;
if (isset($this->question->options)) {
$count = count($this->question->options->answers);
} else {
$count = 0;
}
if ($this->question->formoptions->repeatelements) {
$repeatsatstart = $count + 1;
} else {
$repeatsatstart = $count;
}
$this->repeat_elements($repeated, $repeatsatstart, $repeatedoptions, 'noanswers', 'addanswers', 1, get_string('addmoreanswerblanks', 'qtype_calculated'));
$repeated = array();
$repeated[] =& $mform->createElement('header', 'unithdr', get_string('unithdr', 'qtype_numerical', '{no}'));
$repeated[] =& $mform->createElement('text', 'unit', get_string('unit', 'quiz'));
$mform->setType('unit', PARAM_NOTAGS);
$repeated[] =& $mform->createElement('text', 'multiplier', get_string('multiplier', 'quiz'));
$mform->setType('multiplier', PARAM_NUMBER);
if (isset($this->question->options)) {
$countunits = count($this->question->options->units);
} else {
$countunits = 0;
}
if ($this->question->formoptions->repeatelements) {
$repeatsatstart = $countunits + 1;
} else {
$repeatsatstart = $countunits;
}
$this->repeat_elements($repeated, $repeatsatstart, array(), 'nounits', 'addunits', 2, get_string('addmoreunitblanks', 'qtype_calculated', '{no}'));
if ($mform->elementExists('multiplier[0]')) {
$firstunit =& $mform->getElement('multiplier[0]');
$firstunit->freeze();
$firstunit->setValue('1.0');
$firstunit->setPersistantFreeze(true);
}
//hidden elements
$mform->addElement('hidden', 'wizard', 'datasetdefinitions');
$mform->setType('wizard', PARAM_ALPHA);
}
/**
* Internal method. Validates all old-style uploaded files.
*/
function _validate_files(&$files)
{
global $CFG, $COURSE;
$files = array();
if (empty($_FILES)) {
// we do not need to do any checks because no files were submitted
// note: server side rules do not work for files - use custom verification in validate() instead
return true;
}
$errors = array();
$filenames = array();
// now check that we really want each file
foreach ($_FILES as $elname => $file) {
$required = $this->_form->isElementRequired($elname);
if ($file['error'] == 4 and $file['size'] == 0) {
if ($required) {
$errors[$elname] = get_string('required');
}
unset($_FILES[$elname]);
continue;
}
if (!empty($file['error'])) {
$errors[$elname] = file_get_upload_error($file['error']);
unset($_FILES[$elname]);
continue;
}
if (!is_uploaded_file($file['tmp_name'])) {
// TODO: improve error message
$errors[$elname] = get_string('error');
unset($_FILES[$elname]);
continue;
}
if (!$this->_form->elementExists($elname) or !$this->_form->getElementType($elname) == 'file') {
// hmm, this file was not requested
unset($_FILES[$elname]);
continue;
}
/*
// TODO: rethink the file scanning
if ($CFG->runclamonupload) {
if (!clam_scan_moodle_file($_FILES[$elname], $COURSE)) {
$errors[$elname] = $_FILES[$elname]['uploadlog'];
unset($_FILES[$elname]);
continue;
}
}
*/
$filename = clean_param($_FILES[$elname]['name'], PARAM_FILE);
if ($filename === '') {
// TODO: improve error message - wrong chars
$errors[$elname] = get_string('error');
unset($_FILES[$elname]);
continue;
}
if (in_array($filename, $filenames)) {
// TODO: improve error message - duplicate name
$errors[$elname] = get_string('error');
unset($_FILES[$elname]);
continue;
}
$filenames[] = $filename;
$_FILES[$elname]['name'] = $filename;
$files[$elname] = $_FILES[$elname]['tmp_name'];
}
// return errors if found
if (count($errors) == 0) {
return true;
} else {
$files = array();
return $errors;
}
}
