libdir.'/uploadlib.php'; // TODO: remove
/**
* 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->debug >= DEBUG_ALL){
PEAR::setErrorHandling(PEAR_ERROR_CALLBACK, 'pear_handle_error');
}
/**
* 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.
*/
class moodleform {
protected $_formname; // form name
/**
* quickform object definition
*
* @var MoodleQuickForm
*/
protected $_form;
/**
* globals workaround
*
* @var array
*/
protected $_customdata;
/**
* definition_after_data executed flag
* @var definition_finalized
*/
protected $_definition_finalized = false;
/**
* 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 array $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 $attributes you can pass a string of html attributes here or an array.
* @return moodleform
*/
function moodleform($action=null, $customdata=null, $method='post', $target='', $attributes=null, $editable=true) {
if (empty($action)){
$action = strip_querystring(qualified_me());
}
$this->_formname = get_class($this); // '_form' suffix kept in order to prevent collisions of form id and other element
$this->_customdata = $customdata;
$this->_form =& new MoodleQuickForm($this->_formname, $method, $action, $target, $attributes);
if (!$editable){
$this->_form->hardFreeze();
}
$this->definition();
$this->_form->addElement('hidden', 'sesskey', null); // automatic sesskey protection
$this->_form->setDefault('sesskey', sesskey());
$this->_form->addElement('hidden', '_qf__'.$this->_formname, null); // form submission marker
$this->_form->setDefault('_qf__'.$this->_formname, 1);
$this->_form->_setDefaultRuleMessages();
// we have to know all input types before processing submission ;-)
$this->_process_submission($method);
}
/**
* 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 $focus;
}
/**
* Internal method. Alters submitted data to be suitable for quickforms processing.
* Must be called when the form is fully set up.
*/
function _process_submission($method) {
$submission = array();
if ($method == 'post') {
if (!empty($_POST)) {
$submission = $_POST;
}
} else {
$submission = array_merge_recursive($_GET, $_POST); // emulate handling of parameters in xxxx_param()
}
// following trick is needed to enable proper sesskey checks when using GET forms
// the _qf__.$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()) {
print_error('invalidseeky');
}
$files = $_FILES;
} else {
$submission = array();
$files = array();
}
$this->_form->updateSubmission($submission, $files);
}
/**
* Internal method. Validates all old-style uploaded files.
*/
function _validate_files(&$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 ($file['error'] > 0) {
switch ($file['error']) {
case 1: // UPLOAD_ERR_INI_SIZE
$errmessage = get_string('uploadserverlimit');
break;
case 2: // UPLOAD_ERR_FORM_SIZE
$errmessage = get_string('uploadformlimit');
break;
case 3: // UPLOAD_ERR_PARTIAL
$errmessage = get_string('uploadpartialfile');
break;
case 4: // UPLOAD_ERR_NO_FILE
$errmessage = get_string('uploadnofilefound');
break;
// Note: there is no error with a value of 5
case 6: // UPLOAD_ERR_NO_TMP_DIR
$errmessage = get_string('uploadnotempdir');
break;
case 7: // UPLOAD_ERR_CANT_WRITE
$errmessage = get_string('uploadcantwrite');
break;
case 8: // UPLOAD_ERR_EXTENSION
$errmessage = get_string('uploadextension');
break;
default:
$errmessage = get_string('uploadproblem', $file['name']);
}
$errors[$elname] = $errmessage;
unset($_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;
}
}
/**
* 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 mixed $default_values object or array of default values
* @param bool $slased true if magic quotes applied to data values
*/
function set_data($default_values) {
if (is_object($default_values)) {
$default_values = (array)$default_values;
}
$this->_form->setDefaults($default_values);
}
function set_upload_manager($um=false) {
debugging('Not used anymore, please fix code!');
}
/**
* 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();
}
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 $nosubmitbutton){
if (optional_param($nosubmitbutton, 0, PARAM_RAW)){
$nosubmit = true;
break;
}
}
return $nosubmit;
}
/**
* Check that form data is valid.
*
* @return bool true if form data valid
*/
function is_validated() {
static $validated = null; // one validation is enough
$mform =& $this->_form;
//finalize the form definition before any processing
if (!$this->_definition_finalized) {
$this->_definition_finalized = true;
$this->definition_after_data();
}
if ($this->no_submit_button_pressed()){
return false;
} elseif ($validated === null) {
$internal_val = $mform->validate();
$files = array();
$file_val = $this->_validate_files($files);
if ($file_val !== true) {
if (!empty($file_val)) {
foreach ($file_val as $element=>$msg) {
$mform->setElementError($element, $msg);
}
}
$file_val = false;
}
$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;
}
$validated = ($internal_val and $moodle_val and $file_val);
}
return $validated;
}
/**
* Return true if a cancel button has been pressed resulting in the form being submitted.
*
* @return boolean true if a cancel button has been pressed
*/
function is_cancelled(){
$mform =& $this->_form;
if ($mform->isSubmitted()){
foreach ($mform->_cancelButtons as $cancelbutton){
if (optional_param($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
*/
function get_data() {
$mform =& $this->_form;
if ($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()
* NOTE: please use save_stored_file() or save_file()
*/
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 $elname, first element if null
* @return mixed false in case of failure, string if ok
*/
function get_new_filename($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) {
$values = $this->_form->exportValues($elname);
if (empty($values[$elname])) {
return false;
}
$draftid = $values[$elname];
$fs = get_file_storage();
$context = get_context_instance(CONTEXT_USER, $USER->id);
if (!$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) {
$values = $this->_form->exportValues($elname);
if (empty($values[$elname])) {
return false;
}
$draftid = $values[$elname];
$fs = get_file_storage();
$context = get_context_instance(CONTEXT_USER, $USER->id);
if (!$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;
}
/**
* Save file to local filesystem pool
* @param string $elname name of element
* @param int $newcontextid
* @param string $newfilearea
* @param string $newfilepath
* @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, $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 = get_context_instance(CONTEXT_USER, $USER->id);
if (!$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, $newfilearea, $newitemid, $newfilepath, $newfilename)) {
if (!$oldfile->delete()) {
return false;
}
}
}
$file_record = array('contextid'=>$newcontextid, '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, $newfilearea, $newitemid, $newfilepath, $newfilename)) {
if (!$oldfile->delete()) {
return false;
}
}
}
$file_record = array('contextid'=>$newcontextid, '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 $element name of file upload element
* @return mixed false in case of failure, string if ok
*/
function get_file_content($elname) {
global $USER;
if (!$this->is_submitted() or !$this->is_validated()) {
return false;
}
$element = $this->_form->getElement($elname);
if ($element instanceof MoodleQuickForm_filepicker) {
$values = $this->_form->exportValues($elname);
if (empty($values[$elname])) {
return false;
}
$draftid = $values[$elname];
$fs = get_file_storage();
$context = get_context_instance(CONTEXT_USER, $USER->id);
if (!$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();
}
/**
* Abstract method - always override!
*
* If you need special handling of uploaded files, create instance of $this->_upload_manager here.
*/
function definition() {
print_error('mustbeoverriden', 'form', '', get_class($this));
}
/**
* 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();
}
/**
* 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 integer $repeats no of times to repeat elements initially
* @param array $options Array of options to apply to elements. Array keys are element names.
* This is an array of arrays. The second sets of keys are the option types
* for the elements :
* 'default' - default value is value
* 'type' - PARAM_* constant is value
* 'helpbutton' - helpbutton params array is value
* 'disabledif' - last three moodleform::disabledIf()
* params are value as an array
* @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 boolean $addbuttoninside if true, don't call closeHeaderBefore($addfieldsname). Default false.
* @return int no of repeats of element in this page
*/
function repeat_elements($elementobjs, $repeats, $options, $repeathiddenname,
$addfieldsname, $addfieldsno=5, $addstring=null, $addbuttoninside=false){
if ($addstring===null){
$addstring = get_string('addfields', 'form', $addfieldsno);
} else {
$addstring = str_ireplace('{no}', $addfieldsno, $addstring);
}
$repeats = optional_param($repeathiddenname, $repeats, PARAM_INT);
$addfields = optional_param($addfieldsname, '', PARAM_TEXT);
if (!empty($addfields)){
$repeats += $addfieldsno;
}
$mform =& $this->_form;
$mform->registerNoSubmitButton($addfieldsname);
$mform->addElement('hidden', $repeathiddenname, $repeats);
//value not to be overridden by submitted value
$mform->setConstants(array($repeathiddenname=>$repeats));
for ($i=0; $i<$repeats; $i++) {
foreach ($elementobjs as $elementobj){
$elementclone = clone($elementobj);
$name = $elementclone->getName();
if (!empty($name)){
$elementclone->setName($name."[$i]");
}
if (is_a($elementclone, 'HTML_QuickForm_header')){
$value=$elementclone->_text;
$elementclone->setValue(str_replace('{no}', ($i+1), $value));
} else {
$value=$elementclone->getLabel();
$elementclone->setLabel(str_replace('{no}', ($i+1), $value));
}
$mform->addElement($elementclone);
}
}
for ($i=0; $i<$repeats; $i++) {
foreach ($options as $elementname => $elementoptions){
$pos=strpos($elementname, '[');
if ($pos!==FALSE){
$realelementname = substr($elementname, 0, $pos+1)."[$i]";
$realelementname .= substr($elementname, $pos+1);
}else {
$realelementname = $elementname."[$i]";
}
foreach ($elementoptions as $option => $params){
switch ($option){
case 'default' :
$mform->setDefault($realelementname, $params);
break;
case 'helpbutton' :
$mform->setHelpButton($realelementname, $params);
break;
case 'disabledif' :
$params = array_merge(array($realelementname), $params);
call_user_func_array(array(&$mform, 'disabledIf'), $params);
break;
case 'rule' :
if (is_string($params)){
$params = array(null, $params, null, 'client');
}
$params = array_merge(array($realelementname), $params);
call_user_func_array(array(&$mform, 'addRule'), $params);
break;
}
}
}
}
$mform->addElement('submit', $addfieldsname, $addstring);
if (!$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 "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, $buttontext, $attributes, $originalValue = 0) {
global $CFG;
if (empty($text)) {
$text = get_string('selectallornone', 'form');
}
$mform = $this->_form;
$select_value = optional_param('checkbox_controller'. $groupid, null, PARAM_INT);
if ($select_value == 0 || is_null($select_value)) {
$new_select_value = 1;
} else {
$new_select_value = 0;
}
$mform->addElement('hidden', "checkbox_controller$groupid");
$mform->setConstants(array("checkbox_controller$groupid" => $new_select_value));
// Locate all checkboxes for this group and set their value, IF the optional param was given
if (!is_null($select_value)) {
foreach ($this->_form->_elements as $element) {
if ($element->getAttribute('class') == "checkboxgroup$groupid") {
$mform->setConstants(array($element->getAttribute('name') => $select_value));
}
}
}
$checkbox_controller_name = 'nosubmit_checkbox_controller' . $groupid;
$mform->registerNoSubmitButton($checkbox_controller_name);
// Prepare Javascript for submit element
$js = "\n//\n";
require_once("$CFG->libdir/form/submitlink.php");
$submitlink = new MoodleQuickForm_submitlink($checkbox_controller_name, $attributes);
$submitlink->_js = $js;
$submitlink->_onclick = "html_quickform_toggle_checkboxes($groupid); return false;";
$mform->addElement($submitlink);
$mform->setDefault($checkbox_controller_name, $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 boolean $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');
}
}
}
/**
* 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
*
*/
class MoodleQuickForm extends HTML_QuickForm_DHTMLRulesTableless {
var $_types = array();
var $_dependencies = array();
/**
* Array of buttons that if pressed do not result in the processing of the form.
*
* @var array
*/
var $_noSubmitButtons=array();
/**
* Array of buttons that if pressed do not result in the processing of the form.
*
* @var array
*/
var $_cancelButtons=array();
/**
* Array whose keys are element names. If the key exists this is a advanced element
*
* @var array
*/
var $_advancedElements = array();
/**
* Whether to display advanced elements (on page load)
*
* @var boolean
*/
var $_showAdvanced = null;
/**
* The form name is derrived 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 unknown_type
*/
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 = '';
/**
* Class constructor - same parameters as HTML_QuickForm_DHTMLRulesTableless
* @param string $formName Form's name.
* @param string $method (optional)Form's method defaults to 'POST'
* @param mixed $action (optional)Form's action - string or moodle_url
* @param string $target (optional)Form's target defaults to none
* @param mixed $attributes (optional)Extra attributes for