/**
* Returns a list of information about file types based on extensions.
*
* The following elements expected in value array for each extension:
* 'type' - mimetype
* 'icon' - location of the icon file. If value is FILENAME, then either pix/f/FILENAME.gif
* or pix/f/FILENAME.png must be present in moodle and contain 16x16 filetype icon;
* also files with bigger sizes under names
* FILENAME-24, FILENAME-32, FILENAME-64, FILENAME-128, FILENAME-256 are recommended.
* 'groups' (optional) - array of filetype groups this filetype extension is part of;
* commonly used in moodle the following groups:
* - web_image - image that can be included as <img> in HTML
* - image - image that we can parse using GD to find it's dimensions, also used for portfolio format
* - video - file that can be imported as video in text editor
* - audio - file that can be imported as audio in text editor
* - archive - we can extract files from this archive
* - spreadsheet - used for portfolio format
* - document - used for portfolio format
* - presentation - used for portfolio format
* 'string' (optional) - the name of the string from lang/en/mimetypes.php that displays
* human-readable description for this filetype;
* Function {@link get_mimetype_description()} first looks at the presence of string for
* particular mimetype (value of 'type'), if not found looks for string specified in 'string'
* attribute, if not found returns the value of 'type';
* 'defaulticon' (boolean, optional) - used by function {@link file_mimetype_icon()} to find
* an icon for mimetype. If an entry with 'defaulticon' is not found for a particular mimetype,
* this function will return first found icon; Especially usefull for types such as 'text/plain'
*
* @category files
* @return array List of information about file types based on extensions.
* Associative array of extension (lower-case) to associative array
* from 'element name' to data. Current element names are 'type' and 'icon'.
* Unknown types should use the 'xxx' entry which includes defaults.
*/
function &get_mimetypes_array()
{
// Get types from the core_filetypes function, which includes caching.
return core_filetypes::get_types();
}
/**
* Validates the form input
*
* @param array $data submitted data
* @param array $files submitted files
* @return array eventual errors indexed by the field name
*/
public function validation($data, $files)
{
$errors = parent::validation($data, $files);
// Validate lists of allowed extensions.
foreach (array('submissionfiletypes', 'overallfeedbackfiletypes') as $fieldname) {
if (isset($data[$fieldname])) {
$invalidextensions = workshop::invalid_file_extensions($data[$fieldname], array_keys(core_filetypes::get_types()));
if ($invalidextensions) {
$errors[$fieldname] = get_string('err_unknownfileextension', 'mod_workshop', workshop::clean_file_extensions($invalidextensions));
}
}
}
// check the phases borders are valid
if ($data['submissionstart'] > 0 and $data['submissionend'] > 0 and $data['submissionstart'] >= $data['submissionend']) {
$errors['submissionend'] = get_string('submissionendbeforestart', 'mod_workshop');
}
if ($data['assessmentstart'] > 0 and $data['assessmentend'] > 0 and $data['assessmentstart'] >= $data['assessmentend']) {
$errors['assessmentend'] = get_string('assessmentendbeforestart', 'mod_workshop');
}
// check the phases do not overlap
if (max($data['submissionstart'], $data['submissionend']) > 0 and max($data['assessmentstart'], $data['assessmentend']) > 0) {
$phasesubmissionend = max($data['submissionstart'], $data['submissionend']);
$phaseassessmentstart = min($data['assessmentstart'], $data['assessmentend']);
if ($phaseassessmentstart == 0) {
$phaseassessmentstart = max($data['assessmentstart'], $data['assessmentend']);
}
if ($phasesubmissionend > 0 and $phaseassessmentstart > 0 and $phaseassessmentstart < $phasesubmissionend) {
foreach (array('submissionend', 'submissionstart', 'assessmentstart', 'assessmentend') as $f) {
if ($data[$f] > 0) {
$errors[$f] = get_string('phasesoverlap', 'mod_workshop');
break;
}
}
}
}
// Check that the submission grade pass is a valid number.
if (!empty($data['submissiongradepass'])) {
$submissiongradefloat = unformat_float($data['submissiongradepass'], true);
if ($submissiongradefloat === false) {
$errors['submissiongradepass'] = get_string('err_numeric', 'form');
} else {
if ($submissiongradefloat > $data['grade']) {
$errors['submissiongradepass'] = get_string('gradepassgreaterthangrade', 'grades', $data['grade']);
}
}
}
// Check that the grade pass is a valid number.
if (!empty($data['gradinggradepass'])) {
$gradepassfloat = unformat_float($data['gradinggradepass'], true);
if ($gradepassfloat === false) {
$errors['gradinggradepass'] = get_string('err_numeric', 'form');
} else {
if ($gradepassfloat > $data['gradinggrade']) {
$errors['gradinggradepass'] = get_string('gradepassgreaterthangrade', 'grades', $data['gradinggrade']);
}
}
}
return $errors;
}
