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.
/**
* formslib.php - library of classes for creating forms in Moodle, based on PEAR QuickForms.
*
* To use formslib then you will want to create a new file purpose_form.php eg. edit_form.php
* and you want to name your class something like {modulename}_{purpose}_form. Your class will
* extend moodleform overriding abstract classes definition and optionally defintion_after_data
* and validation.
*
* See examples of use of this library in course/edit.php and course/edit_form.php
*
* A few notes :
* form definition is used for both printing of form and processing and should be the same
* for both or you may lose some submitted data which won't be let through.
* you should be using setType for every form element except select, radio or checkbox
* elements, these elements clean themselves.
*
* @package core_form
* @copyright 2006 Jamie Pratt
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
defined('MOODLE_INTERNAL') || die();
/** setup.php includes our hacked pear libs first */
require_once 'HTML/QuickForm.php';
require_once 'HTML/QuickForm/DHTMLRulesTableless.php';
require_once 'HTML/QuickForm/Renderer/Tableless.php';
require_once 'HTML/QuickForm/Rule.php';
require_once $CFG->libdir.'/filelib.php';
/**
* EDITOR_UNLIMITED_FILES - hard-coded value for the 'maxfiles' option
*/
define('EDITOR_UNLIMITED_FILES', -1);
/**
* Callback called when PEAR throws an error
*
* @param PEAR_Error $error
*/
function pear_handle_error($error){
echo ''.$error->GetMessage().' '.$error->getUserInfo();
echo ' Backtrace :';
print_object($error->backtrace);
}
if ($CFG->debugdeveloper) {
//TODO: this is a wrong place to init PEAR!
$GLOBALS['_PEAR_default_error_mode'] = PEAR_ERROR_CALLBACK;
$GLOBALS['_PEAR_default_error_options'] = 'pear_handle_error';
}
/**
* Initalize javascript for date type form element
*
* @staticvar bool $done make sure it gets initalize once.
* @global moodle_page $PAGE
*/
function form_init_date_js() {
global $PAGE;
static $done = false;
if (!$done) {
$done = true;
$calendar = \core_calendar\type_factory::get_calendar_instance();
if ($calendar->get_name() !== 'gregorian') {
// The YUI2 calendar only supports the gregorian calendar type.
return;
}
$module = 'moodle-form-dateselector';
$function = 'M.form.dateselector.init_date_selectors';
$defaulttimezone = date_default_timezone_get();
$config = array(array(
'firstdayofweek' => $calendar->get_starting_weekday(),
'mon' => date_format_string(strtotime("Monday"), '%a', $defaulttimezone),
'tue' => date_format_string(strtotime("Tuesday"), '%a', $defaulttimezone),
'wed' => date_format_string(strtotime("Wednesday"), '%a', $defaulttimezone),
'thu' => date_format_string(strtotime("Thursday"), '%a', $defaulttimezone),
'fri' => date_format_string(strtotime("Friday"), '%a', $defaulttimezone),
'sat' => date_format_string(strtotime("Saturday"), '%a', $defaulttimezone),
'sun' => date_format_string(strtotime("Sunday"), '%a', $defaulttimezone),
'january' => date_format_string(strtotime("January 1"), '%B', $defaulttimezone),
'february' => date_format_string(strtotime("February 1"), '%B', $defaulttimezone),
'march' => date_format_string(strtotime("March 1"), '%B', $defaulttimezone),
'april' => date_format_string(strtotime("April 1"), '%B', $defaulttimezone),
'may' => date_format_string(strtotime("May 1"), '%B', $defaulttimezone),
'june' => date_format_string(strtotime("June 1"), '%B', $defaulttimezone),
'july' => date_format_string(strtotime("July 1"), '%B', $defaulttimezone),
'august' => date_format_string(strtotime("August 1"), '%B', $defaulttimezone),
'september' => date_format_string(strtotime("September 1"), '%B', $defaulttimezone),
'october' => date_format_string(strtotime("October 1"), '%B', $defaulttimezone),
'november' => date_format_string(strtotime("November 1"), '%B', $defaulttimezone),
'december' => date_format_string(strtotime("December 1"), '%B', $defaulttimezone)
));
$PAGE->requires->yui_module($module, $function, $config);
}
}
/**
* Wrapper that separates quickforms syntax from moodle code
*
* Moodle specific wrapper that separates quickforms syntax from moodle code. You won't directly
* use this class you should write a class definition which extends this class or a more specific
* subclass such a moodleform_mod for each form you want to display and/or process with formslib.
*
* You will write your own definition() method which performs the form set up.
*
* @package core_form
* @copyright 2006 Jamie Pratt
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
* @todo MDL-19380 rethink the file scanning
*/
abstract class moodleform {
/** @var string name of the form */
protected $_formname; // form name
/** @var MoodleQuickForm quickform object definition */
protected $_form;
/** @var array globals workaround */
protected $_customdata;
/** @var array submitted form data when using mforms with ajax */
protected $_ajaxformdata;
/** @var object definition_after_data executed flag */
protected $_definition_finalized = false;
/** @var bool|null stores the validation result of this form or null if not yet validated */
protected $_validated = null;
/**
* The constructor function calls the abstract function definition() and it will then
* process and clean and attempt to validate incoming data.
*
* It will call your custom validate method to validate data and will also check any rules
* you have specified in definition using addRule
*
* The name of the form (id attribute of the form) is automatically generated depending on
* the name you gave the class extending moodleform. You should call your class something
* like
*
* @param mixed $action the action attribute for the form. If empty defaults to auto detect the
* current url. If a moodle_url object then outputs params as hidden variables.
* @param mixed $customdata if your form defintion method needs access to data such as $course
* $cm, etc. to construct the form definition then pass it in this array. You can
* use globals for somethings.
* @param string $method if you set this to anything other than 'post' then _GET and _POST will
* be merged and used as incoming data to the form.
* @param string $target target frame for form submission. You will rarely use this. Don't use
* it if you don't need to as the target attribute is deprecated in xhtml strict.
* @param mixed $attributes you can pass a string of html attributes here or an array.
* Special attribute 'data-random-ids' will randomise generated elements ids. This
* is necessary when there are several forms on the same page.
* Special attribute 'data-double-submit-protection' set to 'off' will turn off
* double-submit protection JavaScript - this may be necessary if your form sends
* downloadable files in response to a submit button, and can't call
* \core_form\util::form_download_complete();
* @param bool $editable
* @param array $ajaxformdata Forms submitted via ajax, must pass their data here, instead of relying on _GET and _POST.
*/
public function __construct($action=null, $customdata=null, $method='post', $target='', $attributes=null, $editable=true,
$ajaxformdata=null) {
global $CFG, $FULLME;
// no standard mform in moodle should allow autocomplete with the exception of user signup
if (empty($attributes)) {
$attributes = array('autocomplete'=>'off');
} else if (is_array($attributes)) {
$attributes['autocomplete'] = 'off';
} else {
if (strpos($attributes, 'autocomplete') === false) {
$attributes .= ' autocomplete="off" ';
}
}
if (empty($action)){
// do not rely on PAGE->url here because dev often do not setup $actualurl properly in admin_externalpage_setup()
$action = strip_querystring($FULLME);
if (!empty($CFG->sslproxy)) {
// return only https links when using SSL proxy
$action = preg_replace('/^http:/', 'https:', $action, 1);
}
//TODO: use following instead of FULLME - see MDL-33015
//$action = strip_querystring(qualified_me());
}
// Assign custom data first, so that get_form_identifier can use it.
$this->_customdata = $customdata;
$this->_formname = $this->get_form_identifier();
$this->_ajaxformdata = $ajaxformdata;
$this->_form = new MoodleQuickForm($this->_formname, $method, $action, $target, $attributes, $ajaxformdata);
if (!$editable){
$this->_form->hardFreeze();
}
$this->definition();
$this->_form->addElement('hidden', 'sesskey', null); // automatic sesskey protection
$this->_form->setType('sesskey', PARAM_RAW);
$this->_form->setDefault('sesskey', sesskey());
$this->_form->addElement('hidden', '_qf__'.$this->_formname, null); // form submission marker
$this->_form->setType('_qf__'.$this->_formname, PARAM_RAW);
$this->_form->setDefault('_qf__'.$this->_formname, 1);
$this->_form->_setDefaultRuleMessages();
// Hook to inject logic after the definition was provided.
$this->after_definition();
// we have to know all input types before processing submission ;-)
$this->_process_submission($method);
}
/**
* Old syntax of class constructor. Deprecated in PHP7.
*
* @deprecated since Moodle 3.1
*/
public function moodleform($action=null, $customdata=null, $method='post', $target='', $attributes=null, $editable=true) {
debugging('Use of class name as constructor is deprecated', DEBUG_DEVELOPER);
self::__construct($action, $customdata, $method, $target, $attributes, $editable);
}
/**
* It should returns unique identifier for the form.
* Currently it will return class name, but in case two same forms have to be
* rendered on same page then override function to get unique form identifier.
* e.g This is used on multiple self enrollments page.
*
* @return string form identifier.
*/
protected function get_form_identifier() {
$class = get_class($this);
return preg_replace('/[^a-z0-9_]/i', '_', $class);
}
/**
* To autofocus on first form element or first element with error.
*
* @param string $name if this is set then the focus is forced to a field with this name
* @return string javascript to select form element with first error or
* first element if no errors. Use this as a parameter
* when calling print_header
*/
function focus($name=NULL) {
$form =& $this->_form;
$elkeys = array_keys($form->_elementIndex);
$error = false;
if (isset($form->_errors) && 0 != count($form->_errors)){
$errorkeys = array_keys($form->_errors);
$elkeys = array_intersect($elkeys, $errorkeys);
$error = true;
}
if ($error or empty($name)) {
$names = array();
while (empty($names) and !empty($elkeys)) {
$el = array_shift($elkeys);
$names = $form->_getElNamesRecursive($el);
}
if (!empty($names)) {
$name = array_shift($names);
}
}
$focus = '';
if (!empty($name)) {
$focus = 'forms[\''.$form->getAttribute('id').'\'].elements[\''.$name.'\']';
}
return $focus;
}
/**
* Internal method. Alters submitted data to be suitable for quickforms processing.
* Must be called when the form is fully set up.
*
* @param string $method name of the method which alters submitted data
*/
function _process_submission($method) {
$submission = array();
if (!empty($this->_ajaxformdata)) {
$submission = $this->_ajaxformdata;
} else if ($method == 'post') {
if (!empty($_POST)) {
$submission = $_POST;
}
} else {
$submission = $_GET;
merge_query_params($submission, $_POST); // Emulate handling of parameters in xxxx_param().
}
// following trick is needed to enable proper sesskey checks when using GET forms
// the _qf__.$this->_formname serves as a marker that form was actually submitted
if (array_key_exists('_qf__'.$this->_formname, $submission) and $submission['_qf__'.$this->_formname] == 1) {
if (!confirm_sesskey()) {
throw new \moodle_exception('invalidsesskey');
}
$files = $_FILES;
} else {
$submission = array();
$files = array();
}
$this->detectMissingSetType();
$this->_form->updateSubmission($submission, $files);
}
/**
* Internal method - should not be used anywhere.
* @deprecated since 2.6
* @return array $_POST.
*/
protected function _get_post_params() {
return $_POST;
}
/**
* Internal method. Validates all old-style deprecated uploaded files.
* The new way is to upload files via repository api.
*
* @param array $files list of files to be validated
* @return bool|array Success or an array of errors
*/
function _validate_files(&$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;
}
// NOTE: the viruses are scanned in file picker, no need to deal with them here.
$filename = clean_param($_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;
}
}
/**
* Internal method. Validates filepicker and filemanager files if they are
* set as required fields. Also, sets the error message if encountered one.
*
* @return bool|array with errors
*/
protected function validate_draft_files() {
global $USER;
$mform =& $this->_form;
$errors = array();
//Go through all the required elements and make sure you hit filepicker or
//filemanager element.
foreach ($mform->_rules as $elementname => $rules) {
$elementtype = $mform->getElementType($elementname);
//If element is of type filepicker then do validation
if (($elementtype == 'filepicker') || ($elementtype == 'filemanager')){
//Check if rule defined is required rule
foreach ($rules as $rule) {
if ($rule['type'] == 'required') {
$draftid = (int)$mform->getSubmitValue($elementname);
$fs = get_file_storage();
$context = context_user::instance($USER->id);
if (!$files = $fs->get_area_files($context->id, 'user', 'draft', $draftid, 'id DESC', false)) {
$errors[$elementname] = $rule['message'];
}
}
}
}
}
// Check all the filemanager elements to make sure they do not have too many
// files in them.
foreach ($mform->_elements as $element) {
if ($element->_type == 'filemanager') {
$maxfiles = $element->getMaxfiles();
if ($maxfiles > 0) {
$draftid = (int)$element->getValue();
$fs = get_file_storage();
$context = context_user::instance($USER->id);
$files = $fs->get_area_files($context->id, 'user', 'draft', $draftid, '', false);
if (count($files) > $maxfiles) {
$errors[$element->getName()] = get_string('err_maxfiles', 'form', $maxfiles);
}
}
}
}
if (empty($errors)) {
return true;
} else {
return $errors;
}
}
/**
* Load in existing data as form defaults. Usually new entry defaults are stored directly in
* form definition (new entry form); this function is used to load in data where values
* already exist and data is being edited (edit entry form).
*
* note: $slashed param removed
*
* @param stdClass|array $default_values object or array of default values
*/
function set_data($default_values) {
if (is_object($default_values)) {
$default_values = (array)$default_values;
}
$this->_form->setDefaults($default_values);
}
/**
* Check that form was submitted. Does not check validity of submitted data.
*
* @return bool true if form properly submitted
*/
function is_submitted() {
return $this->_form->isSubmitted();
}
/**
* Checks if button pressed is not for submitting the form
*
* @staticvar bool $nosubmit keeps track of no submit button
* @return bool
*/
function no_submit_button_pressed(){
static $nosubmit = null; // one check is enough
if (!is_null($nosubmit)){
return $nosubmit;
}
$mform =& $this->_form;
$nosubmit = false;
if (!$this->is_submitted()){
return false;
}
foreach ($mform->_noSubmitButtons as $nosubmitbutton){
if ($this->optional_param($nosubmitbutton, 0, PARAM_RAW)) {
$nosubmit = true;
break;
}
}
return $nosubmit;
}
/**
* Returns an element of multi-dimensional array given the list of keys
*
* Example:
* $array['a']['b']['c'] = 13;
* $v = $this->get_array_value_by_keys($array, ['a', 'b', 'c']);
*
* Will result it $v==13
*
* @param array $array
* @param array $keys
* @return mixed returns null if keys not present
*/
protected function get_array_value_by_keys(array $array, array $keys) {
$value = $array;
foreach ($keys as $key) {
if (array_key_exists($key, $value)) {
$value = $value[$key];
} else {
return null;
}
}
return $value;
}
/**
* Checks if a parameter was passed in the previous form submission
*
* @param string $name the name of the page parameter we want, for example 'id' or 'element[sub][13]'
* @param mixed $default the default value to return if nothing is found
* @param string $type expected type of parameter
* @return mixed
*/
public function optional_param($name, $default, $type) {
$nameparsed = [];
// Convert element name into a sequence of keys, for example 'element[sub][13]' -> ['element', 'sub', '13'].
parse_str($name . '=1', $nameparsed);
$keys = [];
while (is_array($nameparsed)) {
$key = key($nameparsed);
$keys[] = $key;
$nameparsed = $nameparsed[$key];
}
// Search for the element first in $this->_ajaxformdata, then in $_POST and then in $_GET.
if (($value = $this->get_array_value_by_keys($this->_ajaxformdata ?? [], $keys)) !== null ||
($value = $this->get_array_value_by_keys($_POST, $keys)) !== null ||
($value = $this->get_array_value_by_keys($_GET, $keys)) !== null) {
return $type == PARAM_RAW ? $value : clean_param($value, $type);
}
return $default;
}
/**
* Check that form data is valid.
* You should almost always use this, rather than {@link validate_defined_fields}
*
* @return bool true if form data valid
*/
function is_validated() {
//finalize the form definition before any processing
if (!$this->_definition_finalized) {
$this->_definition_finalized = true;
$this->definition_after_data();
}
return $this->validate_defined_fields();
}
/**
* Validate the form.
*
* You almost always want to call {@link is_validated} instead of this
* because it calls {@link definition_after_data} first, before validating the form,
* which is what you want in 99% of cases.
*
* This is provided as a separate function for those special cases where
* you want the form validated before definition_after_data is called
* for example, to selectively add new elements depending on a no_submit_button press,
* but only when the form is valid when the no_submit_button is pressed,
*
* @param bool $validateonnosubmit optional, defaults to false. The default behaviour
* is NOT to validate the form when a no submit button has been pressed.
* pass true here to override this behaviour
*
* @return bool true if form data valid
*/
function validate_defined_fields($validateonnosubmit=false) {
$mform =& $this->_form;
if ($this->no_submit_button_pressed() && empty($validateonnosubmit)){
return false;
} elseif ($this->_validated === null) {
$internal_val = $mform->validate();
$files = array();
$file_val = $this->_validate_files($files);
//check draft files for validation and flag them if required files
//are not in draft area.
$draftfilevalue = $this->validate_draft_files();
if ($file_val !== true && $draftfilevalue !== true) {
$file_val = array_merge($file_val, $draftfilevalue);
} else if ($draftfilevalue !== true) {
$file_val = $draftfilevalue;
} //default is file_val, so no need to assign.
if ($file_val !== true) {
if (!empty($file_val)) {
foreach ($file_val as $element=>$msg) {
$mform->setElementError($element, $msg);
}
}
$file_val = false;
}
// Give the elements a chance to perform an implicit validation.
$element_val = true;
foreach ($mform->_elements as $element) {
if (method_exists($element, 'validateSubmitValue')) {
$value = $mform->getSubmitValue($element->getName());
$result = $element->validateSubmitValue($value);
if (!empty($result) && is_string($result)) {
$element_val = false;
$mform->setElementError($element->getName(), $result);
}
}
}
// Let the form instance validate the submitted values.
$data = $mform->exportValues();
$moodle_val = $this->validation($data, $files);
if ((is_array($moodle_val) && count($moodle_val)!==0)) {
// non-empty array means errors
foreach ($moodle_val as $element=>$msg) {
$mform->setElementError($element, $msg);
}
$moodle_val = false;
} else {
// anything else means validation ok
$moodle_val = true;
}
$this->_validated = ($internal_val and $element_val and $moodle_val and $file_val);
}
return $this->_validated;
}
/**
* Return true if a cancel button has been pressed resulting in the form being submitted.
*
* @return bool true if a cancel button has been pressed
*/
function is_cancelled(){
$mform =& $this->_form;
if ($mform->isSubmitted()){
foreach ($mform->_cancelButtons as $cancelbutton){
if ($this->optional_param($cancelbutton, 0, PARAM_RAW)) {
return true;
}
}
}
return false;
}
/**
* Return submitted data if properly submitted or returns NULL if validation fails or
* if there is no submitted data.
*
* note: $slashed param removed
*
* @return object submitted data; NULL if not valid or not submitted or cancelled
*/
function get_data() {
$mform =& $this->_form;
if (!$this->is_cancelled() and $this->is_submitted() and $this->is_validated()) {
$data = $mform->exportValues();
unset($data['sesskey']); // we do not need to return sesskey
unset($data['_qf__'.$this->_formname]); // we do not need the submission marker too
if (empty($data)) {
return NULL;
} else {
return (object)$data;
}
} else {
return NULL;
}
}
/**
* Return submitted data without validation or NULL if there is no submitted data.
* note: $slashed param removed
*
* @return object submitted data; NULL if not submitted
*/
function get_submitted_data() {
$mform =& $this->_form;
if ($this->is_submitted()) {
$data = $mform->exportValues();
unset($data['sesskey']); // we do not need to return sesskey
unset($data['_qf__'.$this->_formname]); // we do not need the submission marker too
if (empty($data)) {
return NULL;
} else {
return (object)$data;
}
} else {
return NULL;
}
}
/**
* Save verified uploaded files into directory. Upload process can be customised from definition()
*
* @deprecated since Moodle 2.0
* @todo MDL-31294 remove this api
* @see moodleform::save_stored_file()
* @see moodleform::save_file()
* @param string $destination path where file should be stored
* @return bool Always false
*/
function save_files($destination) {
debugging('Not used anymore, please fix code! Use save_stored_file() or save_file() instead');
return false;
}
/**
* Returns name of uploaded file.
*
* @param string $elname first element if null
* @return string|bool false in case of failure, string if ok
*/
function get_new_filename($elname=null) {
global $USER;
if (!$this->is_submitted() or !$this->is_validated()) {
return false;
}
if (is_null($elname)) {
if (empty($_FILES)) {
return false;
}
reset($_FILES);
$elname = key($_FILES);
}
if (empty($elname)) {
return false;
}
$element = $this->_form->getElement($elname);
if ($element instanceof MoodleQuickForm_filepicker || $element instanceof MoodleQuickForm_filemanager) {
$values = $this->_form->exportValues($elname);
if (empty($values[$elname])) {
return false;
}
$draftid = $values[$elname];
$fs = get_file_storage();
$context = context_user::instance($USER->id);
if (!$files = $fs->get_area_files($context->id, 'user', 'draft', $draftid, 'id DESC', false)) {
return false;
}
$file = reset($files);
return $file->get_filename();
}
if (!isset($_FILES[$elname])) {
return false;
}
return $_FILES[$elname]['name'];
}
/**
* Save file to standard filesystem
*
* @param string $elname name of element
* @param string $pathname full path name of file
* @param bool $override override file if exists
* @return bool success
*/
function save_file($elname, $pathname, $override=false) {
global $USER;
if (!$this->is_submitted() or !$this->is_validated()) {
return false;
}
if (file_exists($pathname)) {
if ($override) {
if (!@unlink($pathname)) {
return false;
}
} else {
return false;
}
}
$element = $this->_form->getElement($elname);
if ($element instanceof MoodleQuickForm_filepicker || $element instanceof MoodleQuickForm_filemanager) {
$values = $this->_form->exportValues($elname);
if (empty($values[$elname])) {
return false;
}
$draftid = $values[$elname];
$fs = get_file_storage();
$context = context_user::instance($USER->id);
if (!$files = $fs->get_area_files($context->id, 'user', 'draft', $draftid, 'id DESC', false)) {
return false;
}
$file = reset($files);
return $file->copy_content_to($pathname);
} else if (isset($_FILES[$elname])) {
return copy($_FILES[$elname]['tmp_name'], $pathname);
}
return false;
}
/**
* Returns a temporary file, do not forget to delete after not needed any more.
*
* @param string $elname name of the elmenet
* @return string|bool either string or false
*/
function save_temp_file($elname) {
if (!$this->get_new_filename($elname)) {
return false;
}
if (!$dir = make_temp_directory('forms')) {
return false;
}
if (!$tempfile = tempnam($dir, 'tempup_')) {
return false;
}
if (!$this->save_file($elname, $tempfile, true)) {
// something went wrong
@unlink($tempfile);
return false;
}
return $tempfile;
}
/**
* Get draft files of a form element
* This is a protected method which will be used only inside moodleforms
*
* @param string $elname name of element
* @return array|bool|null
*/
protected function get_draft_files($elname) {
global $USER;
if (!$this->is_submitted()) {
return false;
}
$element = $this->_form->getElement($elname);
if ($element instanceof MoodleQuickForm_filepicker || $element instanceof MoodleQuickForm_filemanager) {
$values = $this->_form->exportValues($elname);
if (empty($values[$elname])) {
return false;
}
$draftid = $values[$elname];
$fs = get_file_storage();
$context = context_user::instance($USER->id);
if (!$files = $fs->get_area_files($context->id, 'user', 'draft', $draftid, 'id DESC', false)) {
return null;
}
return $files;
}
return null;
}
/**
* Save file to local filesystem pool
*
* @param string $elname name of element
* @param int $newcontextid id of context
* @param string $newcomponent name of the component
* @param string $newfilearea name of file area
* @param int $newitemid item id
* @param string $newfilepath path of file where it get stored
* @param string $newfilename use specified filename, if not specified name of uploaded file used
* @param bool $overwrite overwrite file if exists
* @param int $newuserid new userid if required
* @return mixed stored_file object or false if error; may throw exception if duplicate found
*/
function save_stored_file($elname, $newcontextid, $newcomponent, $newfilearea, $newitemid, $newfilepath='/',
$newfilename=null, $overwrite=false, $newuserid=null) {
global $USER;
if (!$this->is_submitted() or !$this->is_validated()) {
return false;
}
if (empty($newuserid)) {
$newuserid = $USER->id;
}
$element = $this->_form->getElement($elname);
$fs = get_file_storage();
if ($element instanceof MoodleQuickForm_filepicker) {
$values = $this->_form->exportValues($elname);
if (empty($values[$elname])) {
return false;
}
$draftid = $values[$elname];
$context = context_user::instance($USER->id);
if (!$files = $fs->get_area_files($context->id, 'user' ,'draft', $draftid, 'id DESC', false)) {
return false;
}
$file = reset($files);
if (is_null($newfilename)) {
$newfilename = $file->get_filename();
}
if ($overwrite) {
if ($oldfile = $fs->get_file($newcontextid, $newcomponent, $newfilearea, $newitemid, $newfilepath, $newfilename)) {
if (!$oldfile->delete()) {
return false;
}
}
}
$file_record = array('contextid'=>$newcontextid, 'component'=>$newcomponent, 'filearea'=>$newfilearea, 'itemid'=>$newitemid,
'filepath'=>$newfilepath, 'filename'=>$newfilename, 'userid'=>$newuserid);
return $fs->create_file_from_storedfile($file_record, $file);
} else if (isset($_FILES[$elname])) {
$filename = is_null($newfilename) ? $_FILES[$elname]['name'] : $newfilename;
if ($overwrite) {
if ($oldfile = $fs->get_file($newcontextid, $newcomponent, $newfilearea, $newitemid, $newfilepath, $newfilename)) {
if (!$oldfile->delete()) {
return false;
}
}
}
$file_record = array('contextid'=>$newcontextid, 'component'=>$newcomponent, 'filearea'=>$newfilearea, 'itemid'=>$newitemid,
'filepath'=>$newfilepath, 'filename'=>$newfilename, 'userid'=>$newuserid);
return $fs->create_file_from_pathname($file_record, $_FILES[$elname]['tmp_name']);
}
return false;
}
/**
* Get content of uploaded file.
*
* @param string $elname name of file upload element
* @return string|bool false in case of failure, string if ok
*/
function get_file_content($elname) {
global $USER;
if (!$this->is_submitted() or !$this->is_validated()) {
return false;
}
$element = $this->_form->getElement($elname);
if ($element instanceof MoodleQuickForm_filepicker || $element instanceof MoodleQuickForm_filemanager) {
$values = $this->_form->exportValues($elname);
if (empty($values[$elname])) {
return false;
}
$draftid = $values[$elname];
$fs = get_file_storage();
$context = context_user::instance($USER->id);
if (!$files = $fs->get_area_files($context->id, 'user', 'draft', $draftid, 'id DESC', false)) {
return false;
}
$file = reset($files);
return $file->get_content();
} else if (isset($_FILES[$elname])) {
return file_get_contents($_FILES[$elname]['tmp_name']);
}
return false;
}
/**
* Print html form.
*/
function display() {
//finalize the form definition if not yet done
if (!$this->_definition_finalized) {
$this->_definition_finalized = true;
$this->definition_after_data();
}
$this->_form->display();
}
/**
* Renders the html form (same as display, but returns the result).
*
* Note that you can only output this rendered result once per page, as
* it contains IDs which must be unique.
*
* @return string HTML code for the form
*/
public function render() {
ob_start();
$this->display();
$out = ob_get_contents();
ob_end_clean();
return $out;
}
/**
* Form definition. Abstract method - always override!
*/
protected abstract function definition();
/**
* After definition hook.
*
* This is useful for intermediate classes to inject logic after the definition was
* provided without requiring developers to call the parent {{@link self::definition()}}
* as it's not obvious by design. The 'intermediate' class is 'MyClass extends
* IntermediateClass extends moodleform'.
*
* Classes overriding this method should always call the parent. We may not add
* anything specifically in this instance of the method, but intermediate classes
* are likely to do so, and so it is a good practice to always call the parent.
*
* @return void
*/
protected function after_definition() {
}
/**
* Dummy stub method - override if you need to setup the form depending on current
* values. This method is called after definition(), data submission and set_data().
* All form setup that is dependent on form values should go in here.
*/
function definition_after_data(){
}
/**
* Dummy stub method - override if you needed to perform some extra validation.
* If there are errors return array of errors ("fieldname"=>"error message"),
* otherwise true if ok.
*
* Server side rules do not work for uploaded files, implement serverside rules here if needed.
*
* @param array $data array of ("fieldname"=>value) of submitted data
* @param array $files array of uploaded files "element_name"=>tmp_file_path
* @return array of "element_name"=>"error_description" if there are errors,
* or an empty array if everything is OK (true allowed for backwards compatibility too).
*/
function validation($data, $files) {
return array();
}
/**
* Helper used by {@link repeat_elements()}.
*
* @param int $i the index of this element.
* @param HTML_QuickForm_element $elementclone
* @param array $namecloned array of names
*/
function repeat_elements_fix_clone($i, $elementclone, &$namecloned) {
$name = $elementclone->getName();
$namecloned[] = $name;
if (!empty($name)) {
$elementclone->setName($name."[$i]");
}
if (is_a($elementclone, 'HTML_QuickForm_header')) {
$value = $elementclone->_text;
$elementclone->setValue(str_replace('{no}', ($i+1), $value));
} else if (is_a($elementclone, 'HTML_QuickForm_submit') || is_a($elementclone, 'HTML_QuickForm_button')) {
$elementclone->setValue(str_replace('{no}', ($i+1), $elementclone->getValue()));
} else {
$value=$elementclone->getLabel();
$elementclone->setLabel(str_replace('{no}', ($i+1), $value));
}
}
/**
* Method to add a repeating group of elements to a form.
*
* @param array $elementobjs Array of elements or groups of elements that are to be repeated
* @param int $repeats no of times to repeat elements initially
* @param array $options a nested array. The first array key is the element name.
* the second array key is the type of option to set, and depend on that option,
* the value takes different forms.
* 'default' - default value to set. Can include '{no}' which is replaced by the repeat number.
* 'type' - PARAM_* type.
* 'helpbutton' - array containing the helpbutton params.
* 'disabledif' - array containing the disabledIf() arguments after the element name.
* 'rule' - array containing the addRule arguments after the element name.
* 'expanded' - whether this section of the form should be expanded by default. (Name be a header element.)
* 'advanced' - whether this element is hidden by 'Show more ...'.
* @param string $repeathiddenname name for hidden element storing no of repeats in this form
* @param string $addfieldsname name for button to add more fields
* @param int $addfieldsno how many fields to add at a time
* @param string $addstring name of button, {no} is replaced by no of blanks that will be added.
* @param bool $addbuttoninside if true, don't call closeHeaderBefore($addfieldsname). Default false.
* @param string $deletebuttonname if specified, treats the no-submit button with this name as a "delete element" button
* in each of the elements
* @return int no of repeats of element in this page
*/
public function repeat_elements($elementobjs, $repeats, $options, $repeathiddenname,
$addfieldsname, $addfieldsno = 5, $addstring = null, $addbuttoninside = false,
$deletebuttonname = '') {
if ($addstring === null) {
$addstring = get_string('addfields', 'form', $addfieldsno);
} else {
$addstring = str_ireplace('{no}', $addfieldsno, $addstring);
}
$repeats = $this->optional_param($repeathiddenname, $repeats, PARAM_INT);
$addfields = $this->optional_param($addfieldsname, '', PARAM_TEXT);
$oldrepeats = $repeats;
if (!empty($addfields)){
$repeats += $addfieldsno;
}
$mform =& $this->_form;
$mform->registerNoSubmitButton($addfieldsname);
$mform->addElement('hidden', $repeathiddenname, $repeats);
$mform->setType($repeathiddenname, PARAM_INT);
//value not to be overridden by submitted value
$mform->setConstants(array($repeathiddenname=>$repeats));
$namecloned = array();
$no = 1;
for ($i = 0; $i < $repeats; $i++) {
if ($deletebuttonname) {
$mform->registerNoSubmitButton($deletebuttonname . "[$i]");
$isdeleted = $this->optional_param($deletebuttonname . "[$i]", false, PARAM_RAW) ||
$this->optional_param($deletebuttonname . "-hidden[$i]", false, PARAM_RAW);
if ($isdeleted) {
$mform->addElement('hidden', $deletebuttonname . "-hidden[$i]", 1);
$mform->setType($deletebuttonname . "-hidden[$i]", PARAM_INT);
continue;
}
}
foreach ($elementobjs as $elementobj){
$elementclone = fullclone($elementobj);
$this->repeat_elements_fix_clone($i, $elementclone, $namecloned);
if ($elementclone instanceof HTML_QuickForm_group && !$elementclone->_appendName) {
foreach ($elementclone->getElements() as $el) {
$this->repeat_elements_fix_clone($i, $el, $namecloned);
}
$elementclone->setLabel(str_replace('{no}', $no, $elementclone->getLabel()));
} else if ($elementobj instanceof \HTML_QuickForm_submit && $elementobj->getName() == $deletebuttonname) {
// Mark the "Delete" button as no-submit.
$onclick = $elementclone->getAttribute('onclick');
$skip = 'skipClientValidation = true;';
$onclick = ($onclick !== null) ? $skip . ' ' . $onclick : $skip;
$elementclone->updateAttributes(['data-skip-validation' => 1, 'data-no-submit' => 1, 'onclick' => $onclick]);
}
// Mark newly created elements, so they know not to look for any submitted data.
if ($i >= $oldrepeats) {
$mform->note_new_repeat($elementclone->getName());
}
$mform->addElement($elementclone);
$no++;
}
}
for ($i=0; $i<$repeats; $i++) {
foreach ($options as $elementname => $elementoptions){
$pos=strpos($elementname, '[');
if ($pos!==FALSE){
$realelementname = substr($elementname, 0, $pos)."[$i]";
$realelementname .= substr($elementname, $pos);
}else {
$realelementname = $elementname."[$i]";
}
foreach ($elementoptions as $option => $params){
switch ($option){
case 'default' :
$mform->setDefault($realelementname, str_replace('{no}', $i + 1, $params));
break;
case 'helpbutton' :
$params = array_merge(array($realelementname), $params);
call_user_func_array(array(&$mform, 'addHelpButton'), $params);
break;
case 'disabledif' :
case 'hideif' :
$pos = strpos($params[0], '[');
$ending = '';
if ($pos !== false) {
$ending = substr($params[0], $pos);
$params[0] = substr($params[0], 0, $pos);
}
foreach ($namecloned as $num => $name){
if ($params[0] == $name){
$params[0] = $params[0] . "[$i]" . $ending;
break;
}
}
$params = array_merge(array($realelementname), $params);
$function = ($option === 'disabledif') ? 'disabledIf' : 'hideIf';
call_user_func_array(array(&$mform, $function), $params);
break;
case 'rule' :
if (is_string($params)){
$params = array(null, $params, null, 'client');
}
$params = array_merge(array($realelementname), $params);
call_user_func_array(array(&$mform, 'addRule'), $params);
break;
case 'type':
$mform->setType($realelementname, $params);
break;
case 'expanded':
$mform->setExpanded($realelementname, $params);
break;
case 'advanced' :
$mform->setAdvanced($realelementname, $params);
break;
}
}
}
}
$mform->addElement('submit', $addfieldsname, $addstring, [], false);
if (!$addbuttoninside) {
$mform->closeHeaderBefore($addfieldsname);
}
return $repeats;
}
/**
* Adds a link/button that controls the checked state of a group of checkboxes.
*
* @param int $groupid The id of the group of advcheckboxes this element controls
* @param string $text The text of the link. Defaults to selectallornone ("select all/none")
* @param array $attributes associative array of HTML attributes
* @param int $originalValue The original general state of the checkboxes before the user first clicks this element
*/
function add_checkbox_controller($groupid, $text = null, $attributes = null, $originalValue = 0) {
global $CFG, $PAGE;
// Name of the controller button
$checkboxcontrollername = 'nosubmit_checkbox_controller' . $groupid;
$checkboxcontrollerparam = 'checkbox_controller'. $groupid;
$checkboxgroupclass = 'checkboxgroup'.$groupid;
// Set the default text if none was specified
if (empty($text)) {
$text = get_string('selectallornone', 'form');
}
$mform = $this->_form;
$selectvalue = $this->optional_param($checkboxcontrollerparam, null, PARAM_INT);
$contollerbutton = $this->optional_param($checkboxcontrollername, null, PARAM_ALPHAEXT);
$newselectvalue = $selectvalue;
if (is_null($selectvalue)) {
$newselectvalue = $originalValue;
} else if (!is_null($contollerbutton)) {
$newselectvalue = (int) !$selectvalue;
}
// set checkbox state depending on orignal/submitted value by controoler button
if (!is_null($contollerbutton) || is_null($selectvalue)) {
foreach ($mform->_elements as $element) {
if (($element instanceof MoodleQuickForm_advcheckbox) &&
$element->getAttribute('class') == $checkboxgroupclass &&
!$element->isFrozen()) {
$mform->setConstants(array($element->getName() => $newselectvalue));
}
}
}
$mform->addElement('hidden', $checkboxcontrollerparam, $newselectvalue, array('id' => "id_".$checkboxcontrollerparam));
$mform->setType($checkboxcontrollerparam, PARAM_INT);
$mform->setConstants(array($checkboxcontrollerparam => $newselectvalue));
$PAGE->requires->yui_module('moodle-form-checkboxcontroller', 'M.form.checkboxcontroller',
array(
array('groupid' => $groupid,
'checkboxclass' => $checkboxgroupclass,
'checkboxcontroller' => $checkboxcontrollerparam,
'controllerbutton' => $checkboxcontrollername)
)
);
require_once("$CFG->libdir/form/submit.php");
$submitlink = new MoodleQuickForm_submit($checkboxcontrollername, $attributes);
$mform->addElement($submitlink);
$mform->registerNoSubmitButton($checkboxcontrollername);
$mform->setDefault($checkboxcontrollername, $text);
}
/**
* Use this method to a cancel and submit button to the end of your form. Pass a param of false
* if you don't want a cancel button in your form. If you have a cancel button make sure you
* check for it being pressed using is_cancelled() and redirecting if it is true before trying to
* get data with get_data().
*
* @param bool $cancel whether to show cancel button, default true
* @param string $submitlabel label for submit button, defaults to get_string('savechanges')
*/
function add_action_buttons($cancel = true, $submitlabel=null){
if (is_null($submitlabel)){
$submitlabel = get_string('savechanges');
}
$mform =& $this->_form;
if ($cancel){
//when two elements we need a group
$buttonarray=array();
$buttonarray[] = &$mform->createElement('submit', 'submitbutton', $submitlabel);
$buttonarray[] = &$mform->createElement('cancel');
$mform->addGroup($buttonarray, 'buttonar', '', array(' '), false);
$mform->closeHeaderBefore('buttonar');
} else {
//no group needed
$mform->addElement('submit', 'submitbutton', $submitlabel);
$mform->closeHeaderBefore('submitbutton');
}
}
/**
* Adds an initialisation call for a standard JavaScript enhancement.
*
* This function is designed to add an initialisation call for a JavaScript
* enhancement that should exist within javascript-static M.form.init_{enhancementname}.
*
* Current options:
* - Selectboxes
* - smartselect: Turns a nbsp indented select box into a custom drop down
* control that supports multilevel and category selection.
* $enhancement = 'smartselect';
* $options = array('selectablecategories' => true|false)
*
* @param string|element $element form element for which Javascript needs to be initalized
* @param string $enhancement which init function should be called
* @param array $options options passed to javascript
* @param array $strings strings for javascript
* @deprecated since Moodle 3.3 MDL-57471
*/
function init_javascript_enhancement($element, $enhancement, array $options=array(), array $strings=null) {
debugging('$mform->init_javascript_enhancement() is deprecated and no longer does anything. '.
'smartselect uses should be converted to the searchableselector form element.', DEBUG_DEVELOPER);
}
/**
* Returns a JS module definition for the mforms JS
*
* @return array
*/
public static function get_js_module() {
global $CFG;
return array(
'name' => 'mform',
'fullpath' => '/lib/form/form.js',
'requires' => array('base', 'node')
);
}
/**
* Detects elements with missing setType() declerations.
*
* Finds elements in the form which should a PARAM_ type set and throws a
* developer debug warning for any elements without it. This is to reduce the
* risk of potential security issues by developers mistakenly forgetting to set
* the type.
*
* @return void
*/
private function detectMissingSetType() {
global $CFG;
if (!$CFG->debugdeveloper) {
// Only for devs.
return;
}
$mform = $this->_form;
foreach ($mform->_elements as $element) {
$group = false;
$elements = array($element);
if ($element->getType() == 'group') {
$group = $element;
$elements = $element->getElements();
}
foreach ($elements as $index => $element) {
switch ($element->getType()) {
case 'hidden':
case 'text':
case 'url':
if ($group) {
$name = $group->getElementName($index);
} else {
$name = $element->getName();
}
$key = $name;
$found = array_key_exists($key, $mform->_types);
// For repeated elements we need to look for
// the "main" type, not for the one present
// on each repetition. All the stuff in formslib
// (repeat_elements(), updateSubmission()... seems
// to work that way.
while (!$found && strrpos($key, '[') !== false) {
$pos = strrpos($key, '[');
$key = substr($key, 0, $pos);
$found = array_key_exists($key, $mform->_types);
}
if (!$found) {
debugging("Did you remember to call setType() for '$name'? ".
'Defaulting to PARAM_RAW cleaning.', DEBUG_DEVELOPER);
}
break;
}
}
}
}
/**
* Used by tests to simulate submitted form data submission from the user.
*
* For form fields where no data is submitted the default for that field as set by set_data or setDefault will be passed to
* get_data.
*
* This method sets $_POST or $_GET and $_FILES with the data supplied. Our unit test code empties all these
* global arrays after each test.
*
* @param array $simulatedsubmitteddata An associative array of form values (same format as $_POST).
* @param array $simulatedsubmittedfiles An associative array of files uploaded (same format as $_FILES). Can be omitted.
* @param string $method 'post' or 'get', defaults to 'post'.
* @param null $formidentifier the default is to use the class name for this class but you may need to provide
* a different value here for some forms that are used more than once on the
* same page.
*/
public static function mock_submit($simulatedsubmitteddata, $simulatedsubmittedfiles = array(), $method = 'post',
$formidentifier = null) {
$_FILES = $simulatedsubmittedfiles;
if ($formidentifier === null) {
$formidentifier = get_called_class();
$formidentifier = str_replace('\\', '_', $formidentifier); // See MDL-56233 for more information.
}
$simulatedsubmitteddata['_qf__'.$formidentifier] = 1;
$simulatedsubmitteddata['sesskey'] = sesskey();
if (strtolower($method) === 'get') {
$_GET = $simulatedsubmitteddata;
} else {
$_POST = $simulatedsubmitteddata;
}
}
/**
* Used by tests to simulate submitted form data submission via AJAX.
*
* For form fields where no data is submitted the default for that field as set by set_data or setDefault will be passed to
* get_data.
*
* This method sets $_POST or $_GET and $_FILES with the data supplied. Our unit test code empties all these
* global arrays after each test.
*
* @param array $simulatedsubmitteddata An associative array of form values (same format as $_POST).
* @param array $simulatedsubmittedfiles An associative array of files uploaded (same format as $_FILES). Can be omitted.
* @param string $method 'post' or 'get', defaults to 'post'.
* @param null $formidentifier the default is to use the class name for this class but you may need to provide
* a different value here for some forms that are used more than once on the
* same page.
* @return array array to pass to form constructor as $ajaxdata
*/
public static function mock_ajax_submit($simulatedsubmitteddata, $simulatedsubmittedfiles = array(), $method = 'post',
$formidentifier = null) {
$_FILES = $simulatedsubmittedfiles;
if ($formidentifier === null) {
$formidentifier = get_called_class();
$formidentifier = str_replace('\\', '_', $formidentifier); // See MDL-56233 for more information.
}
$simulatedsubmitteddata['_qf__'.$formidentifier] = 1;
$simulatedsubmitteddata['sesskey'] = sesskey();
if (strtolower($method) === 'get') {
$_GET = ['sesskey' => sesskey()];
} else {
$_POST = ['sesskey' => sesskey()];
}
return $simulatedsubmitteddata;
}
/**
* Used by tests to generate valid submit keys for moodle forms that are
* submitted with ajax data.
*
* @throws \moodle_exception If called outside unit test environment
* @param array $data Existing form data you wish to add the keys to.
* @return array
*/
public static function mock_generate_submit_keys($data = []) {
if (!defined('PHPUNIT_TEST') || !PHPUNIT_TEST) {
throw new \moodle_exception("This function can only be used for unit testing.");
}
$formidentifier = get_called_class();
$formidentifier = str_replace('\\', '_', $formidentifier); // See MDL-56233 for more information.
$data['sesskey'] = sesskey();
$data['_qf__' . $formidentifier] = 1;
return $data;
}
/**
* Set display mode for the form when labels take full width of the form and above the elements even on big screens
*
* Useful for forms displayed inside modals or in narrow containers
*/
public function set_display_vertical() {
$oldclass = $this->_form->getAttribute('class');
$this->_form->updateAttributes(array('class' => $oldclass . ' full-width-labels'));
}
/**
* Set the initial 'dirty' state of the form.
*
* @param bool $state
* @since Moodle 3.7.1
*/
public function set_initial_dirty_state($state = false) {
$this->_form->set_initial_dirty_state($state);
}
}
/**
* MoodleQuickForm implementation
*
* You never extend this class directly. The class methods of this class are available from
* the private $this->_form property on moodleform and its children. You generally only
* call methods on this class from within abstract methods that you override on moodleform such
* as definition and definition_after_data
*
* @package core_form
* @category form
* @copyright 2006 Jamie Pratt
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
class MoodleQuickForm extends HTML_QuickForm_DHTMLRulesTableless {
/** @var array type (PARAM_INT, PARAM_TEXT etc) of element value */
var $_types = array();
/** @var array dependent state for the element/'s */
var $_dependencies = array();
/**
* @var array elements that will become hidden based on another element
*/
protected $_hideifs = array();
/** @var array Array of buttons that if pressed do not result in the processing of the form. */
var $_noSubmitButtons=array();
/** @var array Array of buttons that if pressed do not result in the processing of the form. */
var $_cancelButtons=array();
/** @var array Array whose keys are element names. If the key exists this is a advanced element */
var $_advancedElements = array();
/**
* Array whose keys are element names and values are the desired collapsible state.
* True for collapsed, False for expanded. If not present, set to default in
* {@link self::accept()}.
*
* @var array
*/
var $_collapsibleElements = array();
/**
* Whether to enable shortforms for this form
*
* @var boolean
*/
var $_disableShortforms = false;
/** @var bool whether to automatically initialise the form change detector this form. */
protected $_use_form_change_checker = true;
/**
* The initial state of the dirty state.
*
* @var bool
*/
protected $_initial_form_dirty_state = false;
/**
* The form name is derived from the class name of the wrapper minus the trailing form
* It is a name with words joined by underscores whereas the id attribute is words joined by underscores.
* @var string
*/
var $_formName = '';
/**
* String with the html for hidden params passed in as part of a moodle_url
* object for the action. Output in the form.
* @var string
*/
var $_pageparams = '';
/** @var array names of new repeating elements that should not expect to find submitted data */
protected $_newrepeats = array();
/** @var array $_ajaxformdata submitted form data when using mforms with ajax */
protected $_ajaxformdata;
/**
* Whether the form contains any client-side validation or not.
* @var bool
*/
protected $clientvalidation = false;
/**
* Is this a 'disableIf' dependency ?
*/
const DEP_DISABLE = 0;
/**
* Is this a 'hideIf' dependency?
*/
const DEP_HIDE = 1;
/**
* Class constructor - same parameters as HTML_QuickForm_DHTMLRulesTableless
*
* @staticvar int $formcounter counts number of forms
* @param string $formName Form's name.
* @param string $method Form's method defaults to 'POST'
* @param string|moodle_url $action Form's action
* @param string $target (optional)Form's target defaults to none
* @param mixed $attributes (optional)Extra attributes for ";
$this->_hiddenHtml .= $form->_pageparams;
}
if ($form->is_form_change_checker_enabled()) {
$PAGE->requires->js_call_amd('core_form/changechecker', 'watchFormById', [$formid]);
if ($form->is_dirty()) {
$PAGE->requires->js_call_amd('core_form/changechecker', 'markFormAsDirtyById', [$formid]);
}
}
if (!empty($this->_collapsibleElements)) {
if (count($this->_collapsibleElements) > 1) {
$this->_collapseButtons = $OUTPUT->render_from_template('core_form/collapsesections', (object)[]);
}
$PAGE->requires->yui_module('moodle-form-shortforms', 'M.form.shortforms', array(array('formid' => $formid)));
}
if (!empty($this->_advancedElements)){
$PAGE->requires->js_call_amd('core_form/showadvanced', 'init', [$formid]);
}
}
/**
* Create advance group of elements
*
* @param MoodleQuickForm_group $group Passed by reference
* @param bool $required if input is required field
* @param string $error error message to display
*/
function startGroup(&$group, $required, $error){
global $OUTPUT;
// Make sure the element has an id.
$group->_generateId();
// Prepend 'fgroup_' to the ID we generated.
$groupid = 'fgroup_' . $group->getAttribute('id');
// Update the ID.
$group->updateAttributes(array('id' => $groupid));
$advanced = isset($this->_advancedElements[$group->getName()]);
$html = $OUTPUT->mform_element($group, $required, $advanced, $error, false);
$fromtemplate = !empty($html);
if (!$fromtemplate) {
if (method_exists($group, 'getElementTemplateType')) {
$html = $this->_elementTemplates[$group->getElementTemplateType()];
} else {
$html = $this->_elementTemplates['default'];
}
if (isset($this->_advancedElements[$group->getName()])) {
$html = str_replace(' {advanced}', ' advanced', $html);
$html = str_replace('{advancedimg}', $this->_advancedHTML, $html);
} else {
$html = str_replace(' {advanced}', '', $html);
$html = str_replace('{advancedimg}', '', $html);
}
if (method_exists($group, 'getHelpButton')) {
$html = str_replace('{help}', $group->getHelpButton(), $html);
} else {
$html = str_replace('{help}', '', $html);
}
$html = str_replace('{id}', $group->getAttribute('id'), $html);
$html = str_replace('{name}', $group->getName(), $html);
$html = str_replace('{groupname}', 'data-groupname="'.$group->getName().'"', $html);
$html = str_replace('{typeclass}', 'fgroup', $html);
$html = str_replace('{type}', 'group', $html);
$html = str_replace('{class}', $group->getAttribute('class'), $html);
$emptylabel = '';
if ($group->getLabel() == '') {
$emptylabel = 'femptylabel';
}
$html = str_replace('{emptylabel}', $emptylabel, $html);
}
$this->_templates[$group->getName()] = $html;
// Fix for bug in tableless quickforms that didn't allow you to stop a
// fieldset before a group of elements.
// if the element name indicates the end of a fieldset, close the fieldset
if (in_array($group->getName(), $this->_stopFieldsetElements) && $this->_fieldsetsOpen > 0) {
$this->_html .= $this->_closeFieldsetTemplate;
$this->_fieldsetsOpen--;
}
if (!$fromtemplate) {
parent::startGroup($group, $required, $error);
} else {
$this->_html .= $html;
}
}
/**
* Renders element
*
* @param HTML_QuickForm_element $element element
* @param bool $required if input is required field
* @param string $error error message to display
*/
function renderElement(&$element, $required, $error){
global $OUTPUT;
// Make sure the element has an id.
$element->_generateId();
$advanced = isset($this->_advancedElements[$element->getName()]);
$html = $OUTPUT->mform_element($element, $required, $advanced, $error, false);
$fromtemplate = !empty($html);
if (!$fromtemplate) {
// Adding stuff to place holders in template
// check if this is a group element first.
if (($this->_inGroup) and !empty($this->_groupElementTemplate)) {
// So it gets substitutions for *each* element.
$html = $this->_groupElementTemplate;
} else if (method_exists($element, 'getElementTemplateType')) {
$html = $this->_elementTemplates[$element->getElementTemplateType()];
} else {
$html = $this->_elementTemplates['default'];
}
if (isset($this->_advancedElements[$element->getName()])) {
$html = str_replace(' {advanced}', ' advanced', $html);
$html = str_replace(' {aria-live}', ' aria-live="polite"', $html);
} else {
$html = str_replace(' {advanced}', '', $html);
$html = str_replace(' {aria-live}', '', $html);
}
if (isset($this->_advancedElements[$element->getName()]) || $element->getName() == 'mform_showadvanced') {
$html = str_replace('{advancedimg}', $this->_advancedHTML, $html);
} else {
$html = str_replace('{advancedimg}', '', $html);
}
$html = str_replace('{id}', 'fitem_' . $element->getAttribute('id'), $html);
$html = str_replace('{typeclass}', 'f' . $element->getType(), $html);
$html = str_replace('{type}', $element->getType(), $html);
$html = str_replace('{name}', $element->getName(), $html);
$html = str_replace('{groupname}', '', $html);
$html = str_replace('{class}', $element->getAttribute('class'), $html);
$emptylabel = '';
if ($element->getLabel() == '') {
$emptylabel = 'femptylabel';
}
$html = str_replace('{emptylabel}', $emptylabel, $html);
if (method_exists($element, 'getHelpButton')) {
$html = str_replace('{help}', $element->getHelpButton(), $html);
} else {
$html = str_replace('{help}', '', $html);
}
} else {
if ($this->_inGroup) {
$this->_groupElementTemplate = $html;
}
}
if (($this->_inGroup) and !empty($this->_groupElementTemplate)) {
$this->_groupElementTemplate = $html;
} else if (!isset($this->_templates[$element->getName()])) {
$this->_templates[$element->getName()] = $html;
}
if (!$fromtemplate) {
parent::renderElement($element, $required, $error);
} else {
if (in_array($element->getName(), $this->_stopFieldsetElements) && $this->_fieldsetsOpen > 0) {
$this->_html .= $this->_closeFieldsetTemplate;
$this->_fieldsetsOpen--;
}
$this->_html .= $html;
}
}
/**
* Called when visiting a form, after processing all form elements
* Adds required note, form attributes, validation javascript and form content.
*
* @global moodle_page $PAGE
* @param moodleform $form Passed by reference
*/
function finishForm(&$form){
global $PAGE;
if ($form->isFrozen()){
$this->_hiddenHtml = '';
}
parent::finishForm($form);
$this->_html = str_replace('{collapsebtns}', $this->_collapseButtons, $this->_html);
if (!$form->isFrozen()) {
$args = $form->getLockOptionObject();
if (count($args[1]) > 0) {
$PAGE->requires->js_init_call('M.form.initFormDependencies', $args, true, moodleform::get_js_module());
}
}
}
/**
* Called when visiting a header element
*
* @param HTML_QuickForm_header $header An HTML_QuickForm_header element being visited
* @global moodle_page $PAGE
*/
function renderHeader(&$header) {
global $PAGE, $OUTPUT;
$header->_generateId();
$name = $header->getName();
$collapsed = $collapseable = '';
if (isset($this->_collapsibleElements[$header->getName()])) {
$collapseable = true;
$collapsed = $this->_collapsibleElements[$header->getName()];
}
$id = empty($name) ? '' : ' id="' . $header->getAttribute('id') . '"';
if (!empty($name) && isset($this->_templates[$name])) {
$headerhtml = str_replace('{header}', $header->toHtml(), $this->_templates[$name]);
} else {
$headerhtml = $OUTPUT->render_from_template('core_form/element-header',
(object)[
'header' => $header->toHtml(),
'id' => $header->getAttribute('id'),
'collapseable' => $collapseable,
'collapsed' => $collapsed,
'helpbutton' => $header->getHelpButton(),
]);
}
if ($this->_fieldsetsOpen > 0) {
$this->_html .= $this->_closeFieldsetTemplate;
$this->_fieldsetsOpen--;
}
// Define collapsible classes for fieldsets.
$arialive = '';
$fieldsetclasses = array('clearfix');
if (isset($this->_collapsibleElements[$header->getName()])) {
$fieldsetclasses[] = 'collapsible';
if ($this->_collapsibleElements[$header->getName()]) {
$fieldsetclasses[] = 'collapsed';
}
}
if (isset($this->_advancedElements[$name])){
$fieldsetclasses[] = 'containsadvancedelements';
}
$openFieldsetTemplate = str_replace('{id}', $id, $this->_openFieldsetTemplate);
$openFieldsetTemplate = str_replace('{classes}', join(' ', $fieldsetclasses), $openFieldsetTemplate);
$this->_html .= $openFieldsetTemplate . $headerhtml;
$this->_fieldsetsOpen++;
}
/**
* Return Array of element names that indicate the end of a fieldset
*
* @return array
*/
function getStopFieldsetElements(){
return $this->_stopFieldsetElements;
}
}
/**
* Required elements validation
*
* This class overrides QuickForm validation since it allowed space or empty tag as a value
*
* @package core_form
* @category form
* @copyright 2006 Jamie Pratt
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
class MoodleQuickForm_Rule_Required extends HTML_QuickForm_Rule {
/**
* Checks if an element is not empty.
* This is a server-side validation, it works for both text fields and editor fields
*
* @param string $value Value to check
* @param int|string|array $options Not used yet
* @return bool true if value is not empty
*/
function validate($value, $options = null) {
global $CFG;
if (is_array($value) && array_key_exists('text', $value)) {
$value = $value['text'];
}
if (is_array($value)) {
// nasty guess - there has to be something in the array, hopefully nobody invents arrays in arrays
$value = implode('', $value);
}
$stripvalues = array(
'##im', // all tags except img, canvas and hr
'#(\xc2\xa0|\s| )#', // Any whitespaces actually.
);
if (!empty($CFG->strictformsrequired)) {
$value = preg_replace($stripvalues, '', (string)$value);
}
if ((string)$value == '') {
return false;
}
return true;
}
/**
* This function returns Javascript code used to build client-side validation.
* It checks if an element is not empty.
*
* @param int $format format of data which needs to be validated.
* @return array
*/
function getValidationScript($format = null) {
global $CFG;
if (!empty($CFG->strictformsrequired)) {
if (!empty($format) && $format == FORMAT_HTML) {
return array('', "{jsVar}.replace(/(<(?!img|hr|canvas)[^>]*>)| |\s+/ig, '') == ''");
} else {
return array('', "{jsVar}.replace(/^\s+$/g, '') == ''");
}
} else {
return array('', "{jsVar} == ''");
}
}
}
/**
* @global object $GLOBALS['_HTML_QuickForm_default_renderer']
* @name $_HTML_QuickForm_default_renderer
*/
$GLOBALS['_HTML_QuickForm_default_renderer'] = new MoodleQuickForm_Renderer();
/** Please keep this list in alphabetical order. */
MoodleQuickForm::registerElementType('advcheckbox', "$CFG->libdir/form/advcheckbox.php", 'MoodleQuickForm_advcheckbox');
MoodleQuickForm::registerElementType('autocomplete', "$CFG->libdir/form/autocomplete.php", 'MoodleQuickForm_autocomplete');
MoodleQuickForm::registerElementType('button', "$CFG->libdir/form/button.php", 'MoodleQuickForm_button');
MoodleQuickForm::registerElementType('cancel', "$CFG->libdir/form/cancel.php", 'MoodleQuickForm_cancel');
MoodleQuickForm::registerElementType('course', "$CFG->libdir/form/course.php", 'MoodleQuickForm_course');
MoodleQuickForm::registerElementType('cohort', "$CFG->libdir/form/cohort.php", 'MoodleQuickForm_cohort');
MoodleQuickForm::registerElementType('searchableselector', "$CFG->libdir/form/searchableselector.php", 'MoodleQuickForm_searchableselector');
MoodleQuickForm::registerElementType('checkbox', "$CFG->libdir/form/checkbox.php", 'MoodleQuickForm_checkbox');
MoodleQuickForm::registerElementType('date_selector', "$CFG->libdir/form/dateselector.php", 'MoodleQuickForm_date_selector');
MoodleQuickForm::registerElementType('date_time_selector', "$CFG->libdir/form/datetimeselector.php", 'MoodleQuickForm_date_time_selector');
MoodleQuickForm::registerElementType('duration', "$CFG->libdir/form/duration.php", 'MoodleQuickForm_duration');
MoodleQuickForm::registerElementType('editor', "$CFG->libdir/form/editor.php", 'MoodleQuickForm_editor');
MoodleQuickForm::registerElementType('filemanager', "$CFG->libdir/form/filemanager.php", 'MoodleQuickForm_filemanager');
MoodleQuickForm::registerElementType('filepicker', "$CFG->libdir/form/filepicker.php", 'MoodleQuickForm_filepicker');
MoodleQuickForm::registerElementType('filetypes', "$CFG->libdir/form/filetypes.php", 'MoodleQuickForm_filetypes');
MoodleQuickForm::registerElementType('float', "$CFG->libdir/form/float.php", 'MoodleQuickForm_float');
MoodleQuickForm::registerElementType('grading', "$CFG->libdir/form/grading.php", 'MoodleQuickForm_grading');
MoodleQuickForm::registerElementType('group', "$CFG->libdir/form/group.php", 'MoodleQuickForm_group');
MoodleQuickForm::registerElementType('header', "$CFG->libdir/form/header.php", 'MoodleQuickForm_header');
MoodleQuickForm::registerElementType('hidden', "$CFG->libdir/form/hidden.php", 'MoodleQuickForm_hidden');
MoodleQuickForm::registerElementType('listing', "$CFG->libdir/form/listing.php", 'MoodleQuickForm_listing');
MoodleQuickForm::registerElementType('defaultcustom', "$CFG->libdir/form/defaultcustom.php", 'MoodleQuickForm_defaultcustom');
MoodleQuickForm::registerElementType('modgrade', "$CFG->libdir/form/modgrade.php", 'MoodleQuickForm_modgrade');
MoodleQuickForm::registerElementType('modvisible', "$CFG->libdir/form/modvisible.php", 'MoodleQuickForm_modvisible');
MoodleQuickForm::registerElementType('password', "$CFG->libdir/form/password.php", 'MoodleQuickForm_password');
MoodleQuickForm::registerElementType('passwordunmask', "$CFG->libdir/form/passwordunmask.php", 'MoodleQuickForm_passwordunmask');
MoodleQuickForm::registerElementType('questioncategory', "$CFG->libdir/form/questioncategory.php", 'MoodleQuickForm_questioncategory');
MoodleQuickForm::registerElementType('radio', "$CFG->libdir/form/radio.php", 'MoodleQuickForm_radio');
MoodleQuickForm::registerElementType('recaptcha', "$CFG->libdir/form/recaptcha.php", 'MoodleQuickForm_recaptcha');
MoodleQuickForm::registerElementType('select', "$CFG->libdir/form/select.php", 'MoodleQuickForm_select');
MoodleQuickForm::registerElementType('selectgroups', "$CFG->libdir/form/selectgroups.php", 'MoodleQuickForm_selectgroups');
MoodleQuickForm::registerElementType('selectwithlink', "$CFG->libdir/form/selectwithlink.php", 'MoodleQuickForm_selectwithlink');
MoodleQuickForm::registerElementType('selectyesno', "$CFG->libdir/form/selectyesno.php", 'MoodleQuickForm_selectyesno');
MoodleQuickForm::registerElementType('static', "$CFG->libdir/form/static.php", 'MoodleQuickForm_static');
MoodleQuickForm::registerElementType('submit', "$CFG->libdir/form/submit.php", 'MoodleQuickForm_submit');
MoodleQuickForm::registerElementType('tags', "$CFG->libdir/form/tags.php", 'MoodleQuickForm_tags');
MoodleQuickForm::registerElementType('text', "$CFG->libdir/form/text.php", 'MoodleQuickForm_text');
MoodleQuickForm::registerElementType('textarea', "$CFG->libdir/form/textarea.php", 'MoodleQuickForm_textarea');
MoodleQuickForm::registerElementType('url', "$CFG->libdir/form/url.php", 'MoodleQuickForm_url');
MoodleQuickForm::registerElementType('warning', "$CFG->libdir/form/warning.php", 'MoodleQuickForm_warning');
MoodleQuickForm::registerRule('required', null, 'MoodleQuickForm_Rule_Required', "$CFG->libdir/formslib.php");