mirror of
https://github.com/moodle/moodle.git
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2379 lines
93 KiB
PHP
2379 lines
93 KiB
PHP
<?php
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// This file is part of Moodle - http://moodle.org/
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//
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// Moodle is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// Moodle is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
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/**
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* formslib.php - library of classes for creating forms in Moodle, based on PEAR QuickForms.
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*
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* To use formslib then you will want to create a new file purpose_form.php eg. edit_form.php
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* and you want to name your class something like {modulename}_{purpose}_form. Your class will
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* extend moodleform overriding abstract classes definition and optionally defintion_after_data
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* and validation.
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*
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* See examples of use of this library in course/edit.php and course/edit_form.php
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*
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* A few notes :
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* form defintion is used for both printing of form and processing and should be the same
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* for both or you may lose some submitted data which won't be let through.
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* you should be using setType for every form element except select, radio or checkbox
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* elements, these elements clean themselves.
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*
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*
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* @copyright Jamie Pratt <me@jamiep.org>
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* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
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* @package moodlecore
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*/
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/** setup.php icludes our hacked pear libs first */
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require_once 'HTML/QuickForm.php';
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require_once 'HTML/QuickForm/DHTMLRulesTableless.php';
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require_once 'HTML/QuickForm/Renderer/Tableless.php';
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require_once $CFG->libdir.'/filelib.php';
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require_once $CFG->libdir.'/uploadlib.php'; // TODO: remove
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define('EDITOR_UNLIMITED_FILES', -1);
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/**
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* Callback called when PEAR throws an error
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*
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* @param PEAR_Error $error
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*/
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function pear_handle_error($error){
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echo '<strong>'.$error->GetMessage().'</strong> '.$error->getUserInfo();
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echo '<br /> <strong>Backtrace </strong>:';
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print_object($error->backtrace);
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}
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if (!empty($CFG->debug) and $CFG->debug >= DEBUG_ALL){
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PEAR::setErrorHandling(PEAR_ERROR_CALLBACK, 'pear_handle_error');
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}
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/**
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*
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* @staticvar bool $done
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*/
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function form_init_date_js() {
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global $PAGE;
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static $done = false;
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if (!$done) {
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$PAGE->requires->yui2_lib('calendar');
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$PAGE->requires->yui2_lib('container');
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$PAGE->requires->js_function_call('init_date_selectors',
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array(get_string('firstdayofweek', 'langconfig')));
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$done = true;
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}
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}
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/**
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* Moodle specific wrapper that separates quickforms syntax from moodle code. You won't directly
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* use this class you should write a class definition which extends this class or a more specific
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* subclass such a moodleform_mod for each form you want to display and/or process with formslib.
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*
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* You will write your own definition() method which performs the form set up.
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*
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* @package moodlecore
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* @copyright Jamie Pratt <me@jamiep.org>
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* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
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*/
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abstract class moodleform {
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/** @var string */
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protected $_formname; // form name
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/**
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* quickform object definition
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*
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* @var MoodleQuickForm MoodleQuickForm
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*/
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protected $_form;
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/**
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* globals workaround
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*
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* @var array
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*/
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protected $_customdata;
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/**
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* definition_after_data executed flag
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* @var object definition_finalized
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*/
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protected $_definition_finalized = false;
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/**
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* The constructor function calls the abstract function definition() and it will then
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* process and clean and attempt to validate incoming data.
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*
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* It will call your custom validate method to validate data and will also check any rules
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* you have specified in definition using addRule
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*
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* The name of the form (id attribute of the form) is automatically generated depending on
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* the name you gave the class extending moodleform. You should call your class something
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* like
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*
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* @param mixed $action the action attribute for the form. If empty defaults to auto detect the
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* current url. If a moodle_url object then outputs params as hidden variables.
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* @param array $customdata if your form defintion method needs access to data such as $course
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* $cm, etc. to construct the form definition then pass it in this array. You can
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* use globals for somethings.
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* @param string $method if you set this to anything other than 'post' then _GET and _POST will
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* be merged and used as incoming data to the form.
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* @param string $target target frame for form submission. You will rarely use this. Don't use
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* it if you don't need to as the target attribute is deprecated in xhtml
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* strict.
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* @param mixed $attributes you can pass a string of html attributes here or an array.
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* @param bool $editable
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* @return object moodleform
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*/
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function moodleform($action=null, $customdata=null, $method='post', $target='', $attributes=null, $editable=true) {
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if (empty($action)){
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$action = strip_querystring(qualified_me());
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}
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$this->_formname = get_class($this); // '_form' suffix kept in order to prevent collisions of form id and other element
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$this->_customdata = $customdata;
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$this->_form = new MoodleQuickForm($this->_formname, $method, $action, $target, $attributes);
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if (!$editable){
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$this->_form->hardFreeze();
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}
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$this->definition();
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$this->_form->addElement('hidden', 'sesskey', null); // automatic sesskey protection
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$this->_form->setType('sesskey', PARAM_RAW);
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$this->_form->setDefault('sesskey', sesskey());
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$this->_form->addElement('hidden', '_qf__'.$this->_formname, null); // form submission marker
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$this->_form->setType('_qf__'.$this->_formname, PARAM_RAW);
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$this->_form->setDefault('_qf__'.$this->_formname, 1);
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$this->_form->_setDefaultRuleMessages();
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// we have to know all input types before processing submission ;-)
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$this->_process_submission($method);
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}
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/**
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* To autofocus on first form element or first element with error.
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*
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* @param string $name if this is set then the focus is forced to a field with this name
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*
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* @return string javascript to select form element with first error or
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* first element if no errors. Use this as a parameter
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* when calling print_header
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*/
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function focus($name=NULL) {
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$form =& $this->_form;
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$elkeys = array_keys($form->_elementIndex);
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$error = false;
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if (isset($form->_errors) && 0 != count($form->_errors)){
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$errorkeys = array_keys($form->_errors);
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$elkeys = array_intersect($elkeys, $errorkeys);
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$error = true;
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}
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if ($error or empty($name)) {
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$names = array();
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while (empty($names) and !empty($elkeys)) {
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$el = array_shift($elkeys);
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$names = $form->_getElNamesRecursive($el);
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}
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if (!empty($names)) {
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$name = array_shift($names);
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}
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}
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$focus = '';
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if (!empty($name)) {
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$focus = 'forms[\''.$form->getAttribute('id').'\'].elements[\''.$name.'\']';
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}
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return $focus;
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}
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/**
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* Internal method. Alters submitted data to be suitable for quickforms processing.
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* Must be called when the form is fully set up.
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*
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* @param string $method
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*/
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function _process_submission($method) {
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$submission = array();
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if ($method == 'post') {
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if (!empty($_POST)) {
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$submission = $_POST;
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}
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} else {
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$submission = array_merge_recursive($_GET, $_POST); // emulate handling of parameters in xxxx_param()
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}
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// following trick is needed to enable proper sesskey checks when using GET forms
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// the _qf__.$this->_formname serves as a marker that form was actually submitted
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if (array_key_exists('_qf__'.$this->_formname, $submission) and $submission['_qf__'.$this->_formname] == 1) {
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if (!confirm_sesskey()) {
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print_error('invalidsesskey');
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}
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$files = $_FILES;
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} else {
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$submission = array();
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$files = array();
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}
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$this->_form->updateSubmission($submission, $files);
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}
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/**
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* Internal method. Validates all old-style uploaded files.
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*
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* @global object
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* @global object
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* @param array $files
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* @return bool|array Success or an array of errors
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*/
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function _validate_files(&$files) {
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global $CFG, $COURSE;
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$files = array();
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if (empty($_FILES)) {
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// we do not need to do any checks because no files were submitted
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// note: server side rules do not work for files - use custom verification in validate() instead
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return true;
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}
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$errors = array();
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$filenames = array();
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// now check that we really want each file
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foreach ($_FILES as $elname=>$file) {
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$required = $this->_form->isElementRequired($elname);
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if ($file['error'] == 4 and $file['size'] == 0) {
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if ($required) {
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$errors[$elname] = get_string('required');
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}
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unset($_FILES[$elname]);
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continue;
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}
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if (!empty($file['error'])) {
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$errors[$elname] = file_get_upload_error($file['error']);
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unset($_FILES[$elname]);
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continue;
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}
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if (!is_uploaded_file($file['tmp_name'])) {
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// TODO: improve error message
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$errors[$elname] = get_string('error');
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unset($_FILES[$elname]);
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continue;
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}
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if (!$this->_form->elementExists($elname) or !$this->_form->getElementType($elname)=='file') {
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// hmm, this file was not requested
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unset($_FILES[$elname]);
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continue;
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}
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/*
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// TODO: rethink the file scanning
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if ($CFG->runclamonupload) {
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if (!clam_scan_moodle_file($_FILES[$elname], $COURSE)) {
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$errors[$elname] = $_FILES[$elname]['uploadlog'];
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unset($_FILES[$elname]);
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continue;
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}
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}
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*/
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$filename = clean_param($_FILES[$elname]['name'], PARAM_FILE);
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if ($filename === '') {
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// TODO: improve error message - wrong chars
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$errors[$elname] = get_string('error');
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unset($_FILES[$elname]);
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continue;
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}
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if (in_array($filename, $filenames)) {
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// TODO: improve error message - duplicate name
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$errors[$elname] = get_string('error');
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unset($_FILES[$elname]);
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continue;
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}
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$filenames[] = $filename;
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$_FILES[$elname]['name'] = $filename;
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$files[$elname] = $_FILES[$elname]['tmp_name'];
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}
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// return errors if found
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if (count($errors) == 0){
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return true;
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} else {
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$files = array();
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return $errors;
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}
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}
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/**
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* Load in existing data as form defaults. Usually new entry defaults are stored directly in
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* form definition (new entry form); this function is used to load in data where values
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* already exist and data is being edited (edit entry form).
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*
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* note: $slashed param removed
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*
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* @param mixed $default_values object or array of default values
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* @param bool $slased true if magic quotes applied to data values
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*/
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function set_data($default_values) {
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if (is_object($default_values)) {
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$default_values = (array)$default_values;
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}
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$this->_form->setDefaults($default_values);
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}
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/**
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* @param bool $um
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*/
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function set_upload_manager($um=false) {
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debugging('Not used anymore, please fix code!');
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}
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/**
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* Check that form was submitted. Does not check validity of submitted data.
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*
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* @return bool true if form properly submitted
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*/
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function is_submitted() {
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return $this->_form->isSubmitted();
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}
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/**
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* @staticvar bool $nosubmit
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*/
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function no_submit_button_pressed(){
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static $nosubmit = null; // one check is enough
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if (!is_null($nosubmit)){
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return $nosubmit;
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}
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$mform =& $this->_form;
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$nosubmit = false;
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if (!$this->is_submitted()){
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return false;
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}
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foreach ($mform->_noSubmitButtons as $nosubmitbutton){
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if (optional_param($nosubmitbutton, 0, PARAM_RAW)){
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$nosubmit = true;
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break;
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}
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}
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return $nosubmit;
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}
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/**
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* Check that form data is valid.
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* You should almost always use this, rather than {@see validate_defined_fields}
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*
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* @staticvar bool $validated
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* @return bool true if form data valid
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*/
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function is_validated() {
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//finalize the form definition before any processing
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if (!$this->_definition_finalized) {
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$this->_definition_finalized = true;
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$this->definition_after_data();
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}
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return $this->validate_defined_fields();
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}
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/**
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* Validate the form.
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*
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* You almost always want to call {@see is_validated} instead of this
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* because it calls {@see definition_after_data} first, before validating the form,
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* which is what you want in 99% of cases.
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*
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* This is provided as a separate function for those special cases where
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* you want the form validated before definition_after_data is called
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* for example, to selectively add new elements depending on a no_submit_button press,
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* but only when the form is valid when the no_submit_button is pressed,
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*
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* @param boolean $validateonnosubmit optional, defaults to false. The default behaviour
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* is NOT to validate the form when a no submit button has been pressed.
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* pass true here to override this behaviour
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*
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* @return bool true if form data valid
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*/
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function validate_defined_fields($validateonnosubmit=false) {
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static $validated = null; // one validation is enough
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$mform =& $this->_form;
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if ($this->no_submit_button_pressed() && empty($validateonnosubmit)){
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return false;
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} elseif ($validated === null) {
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$internal_val = $mform->validate();
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$files = array();
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$file_val = $this->_validate_files($files);
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if ($file_val !== true) {
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if (!empty($file_val)) {
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foreach ($file_val as $element=>$msg) {
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$mform->setElementError($element, $msg);
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}
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}
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$file_val = false;
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}
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$data = $mform->exportValues();
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$moodle_val = $this->validation($data, $files);
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if ((is_array($moodle_val) && count($moodle_val)!==0)) {
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// non-empty array means errors
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foreach ($moodle_val as $element=>$msg) {
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$mform->setElementError($element, $msg);
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}
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$moodle_val = false;
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} else {
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// anything else means validation ok
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$moodle_val = true;
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}
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$validated = ($internal_val and $moodle_val and $file_val);
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}
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return $validated;
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}
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/**
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* Return true if a cancel button has been pressed resulting in the form being submitted.
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*
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* @return boolean true if a cancel button has been pressed
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*/
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function is_cancelled(){
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$mform =& $this->_form;
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if ($mform->isSubmitted()){
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foreach ($mform->_cancelButtons as $cancelbutton){
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if (optional_param($cancelbutton, 0, PARAM_RAW)){
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return true;
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}
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}
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}
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return false;
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}
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/**
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* Return submitted data if properly submitted or returns NULL if validation fails or
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* if there is no submitted data.
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*
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* note: $slashed param removed
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*
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* @return object submitted data; NULL if not valid or not submitted
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*/
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function get_data() {
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$mform =& $this->_form;
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if ($this->is_submitted() and $this->is_validated()) {
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$data = $mform->exportValues();
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unset($data['sesskey']); // we do not need to return sesskey
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unset($data['_qf__'.$this->_formname]); // we do not need the submission marker too
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if (empty($data)) {
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return NULL;
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} else {
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return (object)$data;
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}
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} else {
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return NULL;
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}
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}
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/**
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* Return submitted data without validation or NULL if there is no submitted data.
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* note: $slashed param removed
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*
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* @return object submitted data; NULL if not submitted
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*/
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function get_submitted_data() {
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$mform =& $this->_form;
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if ($this->is_submitted()) {
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$data = $mform->exportValues();
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unset($data['sesskey']); // we do not need to return sesskey
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unset($data['_qf__'.$this->_formname]); // we do not need the submission marker too
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if (empty($data)) {
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return NULL;
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} else {
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return (object)$data;
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}
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} else {
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return NULL;
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}
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}
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/**
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* Save verified uploaded files into directory. Upload process can be customised from definition()
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* NOTE: please use save_stored_file() or save_file()
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*
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* @return bool Always false
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*/
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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.
|
|
*
|
|
* @global object
|
|
* @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 || $element instanceof MoodleQuickForm_filemanager) {
|
|
$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
|
|
*
|
|
* @global object
|
|
* @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 = 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;
|
|
}
|
|
|
|
/**
|
|
* Get draft files of a form element
|
|
* This is a protected method which will be used only inside moodleforms
|
|
*
|
|
* @global object $USER
|
|
* @param string $elname name of element
|
|
* @return array
|
|
*/
|
|
protected function get_draft_files($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 = get_context_instance(CONTEXT_USER, $USER->id);
|
|
if (!$files = $fs->get_area_files($context->id, 'user_draft', $draftid, 'id DESC', false)) {
|
|
return null;
|
|
}
|
|
return $files;
|
|
}
|
|
return null;
|
|
}
|
|
|
|
/**
|
|
* Dispose form element draft files
|
|
*
|
|
* @global object $USER
|
|
* @param string $elname name of element
|
|
*/
|
|
function dispose($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 = get_context_instance(CONTEXT_USER, $USER->id);
|
|
$fs->delete_area_files($context->id, 'user_draft', $draftid);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Save file to local filesystem pool
|
|
*
|
|
* @global object
|
|
* @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.
|
|
*
|
|
* @global object
|
|
* @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 || $element instanceof MoodleQuickForm_filemanager) {
|
|
$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.
|
|
*/
|
|
protected abstract function 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();
|
|
}
|
|
|
|
/**
|
|
* 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);
|
|
$mform->setType($repeathiddenname, PARAM_INT);
|
|
//value not to be overridden by submitted value
|
|
$mform->setConstants(array($repeathiddenname=>$repeats));
|
|
$namecloned = array();
|
|
for ($i = 0; $i < $repeats; $i++) {
|
|
foreach ($elementobjs as $elementobj){
|
|
$elementclone = fullclone($elementobj);
|
|
$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 {
|
|
$value=$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, $params);
|
|
break;
|
|
case 'disabledif' :
|
|
foreach ($namecloned as $num => $name){
|
|
if ($params[0] == $name){
|
|
$params[0] = $params[0]."[$i]";
|
|
break;
|
|
}
|
|
}
|
|
$params = array_merge(array($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.
|
|
*
|
|
* @global object
|
|
* @param int $groupid The id of the group of advcheckboxes this element controls
|
|
* @param string $buttontext 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");
|
|
$mform->setType("checkbox_controller$groupid", PARAM_INT);
|
|
$mform->setConstants(array("checkbox_controller$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//<![CDATA[\n";
|
|
if (!defined('HTML_QUICKFORM_CHECKBOXCONTROLLER_EXISTS')) {
|
|
$js .= <<<EOS
|
|
function html_quickform_toggle_checkboxes(group) {
|
|
var checkboxes = getElementsByClassName(document, 'input', 'checkboxgroup' + group);
|
|
var newvalue = false;
|
|
var global = eval('html_quickform_checkboxgroup' + group + ';');
|
|
if (global == 1) {
|
|
eval('html_quickform_checkboxgroup' + group + ' = 0;');
|
|
newvalue = '';
|
|
} else {
|
|
eval('html_quickform_checkboxgroup' + group + ' = 1;');
|
|
newvalue = 'checked';
|
|
}
|
|
|
|
for (i = 0; i < checkboxes.length; i++) {
|
|
checkboxes[i].checked = newvalue;
|
|
}
|
|
}
|
|
EOS;
|
|
define('HTML_QUICKFORM_CHECKBOXCONTROLLER_EXISTS', true);
|
|
}
|
|
$js .= "\nvar html_quickform_checkboxgroup$groupid=$originalValue;\n";
|
|
|
|
$js .= "//]]>\n";
|
|
|
|
require_once("$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');
|
|
}
|
|
}
|
|
|
|
/**
|
|
* 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)
|
|
*
|
|
* @since 2.0
|
|
* @param string|element $element
|
|
* @param string $enhancement
|
|
* @param array $options
|
|
* @param array $strings
|
|
*/
|
|
function init_javascript_enhancement($element, $enhancement, array $options=array(), array $strings=null) {
|
|
global $PAGE;
|
|
if (is_string($element)) {
|
|
$element = $this->_form->getElement($element);
|
|
}
|
|
if (is_object($element)) {
|
|
$element->_generateId();
|
|
$elementid = $element->getAttribute('id');
|
|
$PAGE->requires->js_init_call('M.form.init_'.$enhancement, array($elementid, $options));
|
|
if (is_array($strings)) {
|
|
foreach ($strings as $string) {
|
|
if (is_array($string)) {
|
|
call_user_method_array('string_for_js', $PAGE->requires, $string);
|
|
} else {
|
|
$PAGE->requires->string_for_js($string, 'moodle');
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* 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 moodlecore
|
|
* @copyright Jamie Pratt <me@jamiep.org>
|
|
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
|
|
*/
|
|
class MoodleQuickForm extends HTML_QuickForm_DHTMLRulesTableless {
|
|
/** @var array */
|
|
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 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 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
|
|
*
|
|
* @global object
|
|
* @staticvar int $formcounter
|
|
* @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 $attributes (optional)Extra attributes for <form> tag
|
|
* @access public
|
|
*/
|
|
function MoodleQuickForm($formName, $method, $action, $target='', $attributes=null){
|
|
global $CFG, $OUTPUT;
|
|
|
|
static $formcounter = 1;
|
|
|
|
HTML_Common::HTML_Common($attributes);
|
|
$target = empty($target) ? array() : array('target' => $target);
|
|
$this->_formName = $formName;
|
|
if (is_a($action, 'moodle_url')){
|
|
$this->_pageparams = html_writer::input_hidden_params($action);
|
|
$action = $action->out_omit_querystring();
|
|
} else {
|
|
$this->_pageparams = '';
|
|
}
|
|
//no 'name' atttribute for form in xhtml strict :
|
|
$attributes = array('action'=>$action, 'method'=>$method,
|
|
'accept-charset'=>'utf-8', 'id'=>'mform'.$formcounter) + $target;
|
|
$formcounter++;
|
|
$this->updateAttributes($attributes);
|
|
|
|
//this is custom stuff for Moodle :
|
|
$oldclass= $this->getAttribute('class');
|
|
if (!empty($oldclass)){
|
|
$this->updateAttributes(array('class'=>$oldclass.' mform'));
|
|
}else {
|
|
$this->updateAttributes(array('class'=>'mform'));
|
|
}
|
|
$this->_reqHTML = '<img class="req" title="'.get_string('requiredelement', 'form').'" alt="'.get_string('requiredelement', 'form').'" src="'.$OUTPUT->pix_url('req') .'" />';
|
|
$this->_advancedHTML = '<img class="adv" title="'.get_string('advancedelement', 'form').'" alt="'.get_string('advancedelement', 'form').'" src="'.$OUTPUT->pix_url('adv') .'" />';
|
|
$this->setRequiredNote(get_string('somefieldsrequired', 'form', '<img alt="'.get_string('requiredelement', 'form').'" src="'.$OUTPUT->pix_url('req') .'" />'));
|
|
//(Help file doesn't add anything) helpbutton('requiredelement', get_string('requiredelement', 'form'), 'moodle', true, false, '', true));
|
|
}
|
|
|
|
/**
|
|
* Use this method to indicate an element in a form is an advanced field. If items in a form
|
|
* are marked as advanced then 'Hide/Show Advanced' buttons will automatically be displayed in the
|
|
* form so the user can decide whether to display advanced form controls.
|
|
*
|
|
* If you set a header element to advanced then all elements it contains will also be set as advanced.
|
|
*
|
|
* @param string $elementName group or element name (not the element name of something inside a group).
|
|
* @param boolean $advanced default true sets the element to advanced. False removes advanced mark.
|
|
*/
|
|
function setAdvanced($elementName, $advanced=true){
|
|
if ($advanced){
|
|
$this->_advancedElements[$elementName]='';
|
|
} elseif (isset($this->_advancedElements[$elementName])) {
|
|
unset($this->_advancedElements[$elementName]);
|
|
}
|
|
if ($advanced && $this->getElementType('mform_showadvanced_last')===false){
|
|
$this->setShowAdvanced();
|
|
$this->registerNoSubmitButton('mform_showadvanced');
|
|
|
|
$this->addElement('hidden', 'mform_showadvanced_last');
|
|
$this->setType('mform_showadvanced_last', PARAM_INT);
|
|
}
|
|
}
|
|
/**
|
|
* Set whether to show advanced elements in the form on first displaying form. Default is not to
|
|
* display advanced elements in the form until 'Show Advanced' is pressed.
|
|
*
|
|
* You can get the last state of the form and possibly save it for this user by using
|
|
* value 'mform_showadvanced_last' in submitted data.
|
|
*
|
|
* @param boolean $showadvancedNow
|
|
*/
|
|
function setShowAdvanced($showadvancedNow = null){
|
|
if ($showadvancedNow === null){
|
|
if ($this->_showAdvanced !== null){
|
|
return;
|
|
} else { //if setShowAdvanced is called without any preference
|
|
//make the default to not show advanced elements.
|
|
$showadvancedNow = get_user_preferences(
|
|
moodle_strtolower($this->_formName.'_showadvanced', 0));
|
|
}
|
|
}
|
|
//value of hidden element
|
|
$hiddenLast = optional_param('mform_showadvanced_last', -1, PARAM_INT);
|
|
//value of button
|
|
$buttonPressed = optional_param('mform_showadvanced', 0, PARAM_RAW);
|
|
//toggle if button pressed or else stay the same
|
|
if ($hiddenLast == -1) {
|
|
$next = $showadvancedNow;
|
|
} elseif ($buttonPressed) { //toggle on button press
|
|
$next = !$hiddenLast;
|
|
} else {
|
|
$next = $hiddenLast;
|
|
}
|
|
$this->_showAdvanced = $next;
|
|
if ($showadvancedNow != $next){
|
|
set_user_preference($this->_formName.'_showadvanced', $next);
|
|
}
|
|
$this->setConstants(array('mform_showadvanced_last'=>$next));
|
|
}
|
|
function getShowAdvanced(){
|
|
return $this->_showAdvanced;
|
|
}
|
|
|
|
|
|
/**
|
|
* Accepts a renderer
|
|
*
|
|
* @param object $renderer HTML_QuickForm_Renderer An HTML_QuickForm_Renderer object
|
|
* @access public
|
|
* @return void
|
|
*/
|
|
function accept(&$renderer) {
|
|
if (method_exists($renderer, 'setAdvancedElements')){
|
|
//check for visible fieldsets where all elements are advanced
|
|
//and mark these headers as advanced as well.
|
|
//And mark all elements in a advanced header as advanced
|
|
$stopFields = $renderer->getStopFieldSetElements();
|
|
$lastHeader = null;
|
|
$lastHeaderAdvanced = false;
|
|
$anyAdvanced = false;
|
|
foreach (array_keys($this->_elements) as $elementIndex){
|
|
$element =& $this->_elements[$elementIndex];
|
|
|
|
// if closing header and any contained element was advanced then mark it as advanced
|
|
if ($element->getType()=='header' || in_array($element->getName(), $stopFields)){
|
|
if ($anyAdvanced && !is_null($lastHeader)){
|
|
$this->setAdvanced($lastHeader->getName());
|
|
}
|
|
$lastHeaderAdvanced = false;
|
|
unset($lastHeader);
|
|
$lastHeader = null;
|
|
} elseif ($lastHeaderAdvanced) {
|
|
$this->setAdvanced($element->getName());
|
|
}
|
|
|
|
if ($element->getType()=='header'){
|
|
$lastHeader =& $element;
|
|
$anyAdvanced = false;
|
|
$lastHeaderAdvanced = isset($this->_advancedElements[$element->getName()]);
|
|
} elseif (isset($this->_advancedElements[$element->getName()])){
|
|
$anyAdvanced = true;
|
|
}
|
|
}
|
|
// the last header may not be closed yet...
|
|
if ($anyAdvanced && !is_null($lastHeader)){
|
|
$this->setAdvanced($lastHeader->getName());
|
|
}
|
|
$renderer->setAdvancedElements($this->_advancedElements);
|
|
|
|
}
|
|
parent::accept($renderer);
|
|
}
|
|
|
|
/**
|
|
* @param string $elementName
|
|
*/
|
|
function closeHeaderBefore($elementName){
|
|
$renderer =& $this->defaultRenderer();
|
|
$renderer->addStopFieldsetElements($elementName);
|
|
}
|
|
|
|
/**
|
|
* Should be used for all elements of a form except for select, radio and checkboxes which
|
|
* clean their own data.
|
|
*
|
|
* @param string $elementname
|
|
* @param integer $paramtype use the constants PARAM_*.
|
|
* * PARAM_CLEAN is deprecated and you should try to use a more specific type.
|
|
* * PARAM_TEXT should be used for cleaning data that is expected to be plain text.
|
|
* It will strip all html tags. But will still let tags for multilang support
|
|
* through.
|
|
* * PARAM_RAW means no cleaning whatsoever, it is used mostly for data from the
|
|
* html editor. Data from the editor is later cleaned before display using
|
|
* format_text() function. PARAM_RAW can also be used for data that is validated
|
|
* by some other way or printed by p() or s().
|
|
* * PARAM_INT should be used for integers.
|
|
* * PARAM_ACTION is an alias of PARAM_ALPHA and is used for hidden fields specifying
|
|
* form actions.
|
|
*/
|
|
function setType($elementname, $paramtype) {
|
|
$this->_types[$elementname] = $paramtype;
|
|
}
|
|
|
|
/**
|
|
* See description of setType above. This can be used to set several types at once.
|
|
*
|
|
* @param array $paramtypes
|
|
*/
|
|
function setTypes($paramtypes) {
|
|
$this->_types = $paramtypes + $this->_types;
|
|
}
|
|
|
|
/**
|
|
* @param array $submission
|
|
* @param array $files
|
|
*/
|
|
function updateSubmission($submission, $files) {
|
|
$this->_flagSubmitted = false;
|
|
|
|
if (empty($submission)) {
|
|
$this->_submitValues = array();
|
|
} else {
|
|
foreach ($submission as $key=>$s) {
|
|
if (array_key_exists($key, $this->_types)) {
|
|
$submission[$key] = clean_param($s, $this->_types[$key]);
|
|
}
|
|
}
|
|
$this->_submitValues = $submission;
|
|
$this->_flagSubmitted = true;
|
|
}
|
|
|
|
if (empty($files)) {
|
|
$this->_submitFiles = array();
|
|
} else {
|
|
$this->_submitFiles = $files;
|
|
$this->_flagSubmitted = true;
|
|
}
|
|
|
|
// need to tell all elements that they need to update their value attribute.
|
|
foreach (array_keys($this->_elements) as $key) {
|
|
$this->_elements[$key]->onQuickFormEvent('updateValue', null, $this);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @return string
|
|
*/
|
|
function getReqHTML(){
|
|
return $this->_reqHTML;
|
|
}
|
|
|
|
/**
|
|
* @return string
|
|
*/
|
|
function getAdvancedHTML(){
|
|
return $this->_advancedHTML;
|
|
}
|
|
|
|
/**
|
|
* Initializes a default form value. Used to specify the default for a new entry where
|
|
* no data is loaded in using moodleform::set_data()
|
|
*
|
|
* note: $slashed param removed
|
|
*
|
|
* @param string $elementname element name
|
|
* @param mixed $values values for that element name
|
|
* @access public
|
|
* @return void
|
|
*/
|
|
function setDefault($elementName, $defaultValue){
|
|
$this->setDefaults(array($elementName=>$defaultValue));
|
|
} // end func setDefault
|
|
/**
|
|
* Add an array of buttons to the form
|
|
* @param array $buttons An associative array representing help button to attach to
|
|
* to the form. keys of array correspond to names of elements in form.
|
|
* @param bool $suppresscheck
|
|
* @param string $function
|
|
* @access public
|
|
*/
|
|
function setHelpButtons($buttons, $suppresscheck=false, $function='helpbutton'){
|
|
|
|
foreach ($buttons as $elementname => $button){
|
|
$this->setHelpButton($elementname, $button, $suppresscheck, $function);
|
|
}
|
|
}
|
|
/**
|
|
* Add a single button.
|
|
*
|
|
* @deprecated use addHelpButton() instead
|
|
* @param string $elementname name of the element to add the item to
|
|
* @param array $button arguments to pass to function $function
|
|
* @param boolean $suppresscheck whether to throw an error if the element
|
|
* doesn't exist.
|
|
* @param string $function - function to generate html from the arguments in $button
|
|
* @param string $function
|
|
*/
|
|
function setHelpButton($elementname, $buttonargs, $suppresscheck=false, $function='helpbutton'){
|
|
global $OUTPUT;
|
|
//TODO: obsolete this function completely
|
|
if ($function !== 'helpbutton') {
|
|
//debugging('parameter $function in moodle_form::setHelpButton() is not supported any more');
|
|
}
|
|
|
|
$buttonargs = (array)$buttonargs;
|
|
|
|
if (array_key_exists($elementname, $this->_elementIndex)) {
|
|
//_elements has a numeric index, this code accesses the elements by name
|
|
$element = $this->_elements[$this->_elementIndex[$elementname]];
|
|
|
|
$page = isset($buttonargs[0]) ? $buttonargs[0] : null;
|
|
$text = isset($buttonargs[1]) ? $buttonargs[1] : null;
|
|
$module = isset($buttonargs[2]) ? $buttonargs[2] : 'moodle';
|
|
$linktext = isset($buttonargs[3]) ? $buttonargs[3] : false;
|
|
|
|
$element->_helpbutton = $OUTPUT->old_help_icon($page, $text, $module, $linktext);
|
|
|
|
} else if (!$suppresscheck) {
|
|
print_error('nonexistentformelements', 'form', '', $elementname);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Add a help button to element, only one button per element is allowed.
|
|
*
|
|
* This is new, simplified and preferable method of setting a help icon on form elements.
|
|
* It uses the new $OUTPUT->help_icon().
|
|
*
|
|
* Typically, you will provide the same identifier and the component as you have used for the
|
|
* label of the element. The string identifier with the _help suffix added is then used
|
|
* as the help string.
|
|
*
|
|
* There has to be two strings defined:
|
|
* 1/ get_string($identifier, $component) - the title of the help page
|
|
* 2/ get_string($identifier.'_help', $component) - the actual help page text
|
|
*
|
|
* @since 2.0
|
|
* @param string $elementname name of the element to add the item to
|
|
* @param string $identifier help string identifier without _help suffix
|
|
* @param string $component component name to look the help string in
|
|
* @param string $linktext optional text to display next to the icon
|
|
* @param boolean $suppresscheck set to true if the element may not exist
|
|
* @return void
|
|
*/
|
|
function addHelpButton($elementname, $identifier, $component = 'moodle', $linktext = '', $suppresscheck = false) {
|
|
global $OUTPUT;
|
|
if (array_key_exists($elementname, $this->_elementIndex)) {
|
|
$element = $this->_elements[$this->_elementIndex[$elementname]];
|
|
$element->_helpbutton = $OUTPUT->help_icon($identifier, $component, $linktext);
|
|
} else if (!$suppresscheck) {
|
|
debugging(get_string('nonexistentformelements', 'form', $elementname));
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Set constant value not overridden by _POST or _GET
|
|
* note: this does not work for complex names with [] :-(
|
|
*
|
|
* @param string $elname name of element
|
|
* @param mixed $value
|
|
* @return void
|
|
*/
|
|
function setConstant($elname, $value) {
|
|
$this->_constantValues = HTML_QuickForm::arrayMerge($this->_constantValues, array($elname=>$value));
|
|
$element =& $this->getElement($elname);
|
|
$element->onQuickFormEvent('updateValue', null, $this);
|
|
}
|
|
|
|
/**
|
|
* @param string $elementList
|
|
*/
|
|
function exportValues($elementList = null){
|
|
$unfiltered = array();
|
|
if (null === $elementList) {
|
|
// iterate over all elements, calling their exportValue() methods
|
|
$emptyarray = array();
|
|
foreach (array_keys($this->_elements) as $key) {
|
|
if ($this->_elements[$key]->isFrozen() && !$this->_elements[$key]->_persistantFreeze){
|
|
$value = $this->_elements[$key]->exportValue($emptyarray, true);
|
|
} else {
|
|
$value = $this->_elements[$key]->exportValue($this->_submitValues, true);
|
|
}
|
|
|
|
if (is_array($value)) {
|
|
// This shit throws a bogus warning in PHP 4.3.x
|
|
$unfiltered = HTML_QuickForm::arrayMerge($unfiltered, $value);
|
|
}
|
|
}
|
|
} else {
|
|
if (!is_array($elementList)) {
|
|
$elementList = array_map('trim', explode(',', $elementList));
|
|
}
|
|
foreach ($elementList as $elementName) {
|
|
$value = $this->exportValue($elementName);
|
|
if (PEAR::isError($value)) {
|
|
return $value;
|
|
}
|
|
//oh, stock QuickFOrm was returning array of arrays!
|
|
$unfiltered = HTML_QuickForm::arrayMerge($unfiltered, $value);
|
|
}
|
|
}
|
|
|
|
return $unfiltered;
|
|
}
|
|
/**
|
|
* Adds a validation rule for the given field
|
|
*
|
|
* If the element is in fact a group, it will be considered as a whole.
|
|
* To validate grouped elements as separated entities,
|
|
* use addGroupRule instead of addRule.
|
|
*
|
|
* @param string $element Form element name
|
|
* @param string $message Message to display for invalid data
|
|
* @param string $type Rule type, use getRegisteredRules() to get types
|
|
* @param string $format (optional)Required for extra rule data
|
|
* @param string $validation (optional)Where to perform validation: "server", "client"
|
|
* @param boolean $reset Client-side validation: reset the form element to its original value if there is an error?
|
|
* @param boolean $force Force the rule to be applied, even if the target form element does not exist
|
|
* @access public
|
|
*/
|
|
function addRule($element, $message, $type, $format=null, $validation='server', $reset = false, $force = false)
|
|
{
|
|
parent::addRule($element, $message, $type, $format, $validation, $reset, $force);
|
|
if ($validation == 'client') {
|
|
$this->updateAttributes(array('onsubmit' => 'try { var myValidator = validate_' . $this->_formName . '; } catch(e) { return true; } return myValidator(this);'));
|
|
}
|
|
|
|
} // end func addRule
|
|
/**
|
|
* Adds a validation rule for the given group of elements
|
|
*
|
|
* Only groups with a name can be assigned a validation rule
|
|
* Use addGroupRule when you need to validate elements inside the group.
|
|
* Use addRule if you need to validate the group as a whole. In this case,
|
|
* the same rule will be applied to all elements in the group.
|
|
* Use addRule if you need to validate the group against a function.
|
|
*
|
|
* @param string $group Form group name
|
|
* @param mixed $arg1 Array for multiple elements or error message string for one element
|
|
* @param string $type (optional)Rule type use getRegisteredRules() to get types
|
|
* @param string $format (optional)Required for extra rule data
|
|
* @param int $howmany (optional)How many valid elements should be in the group
|
|
* @param string $validation (optional)Where to perform validation: "server", "client"
|
|
* @param bool $reset Client-side: whether to reset the element's value to its original state if validation failed.
|
|
* @access public
|
|
*/
|
|
function addGroupRule($group, $arg1, $type='', $format=null, $howmany=0, $validation = 'server', $reset = false)
|
|
{
|
|
parent::addGroupRule($group, $arg1, $type, $format, $howmany, $validation, $reset);
|
|
if (is_array($arg1)) {
|
|
foreach ($arg1 as $rules) {
|
|
foreach ($rules as $rule) {
|
|
$validation = (isset($rule[3]) && 'client' == $rule[3])? 'client': 'server';
|
|
|
|
if ('client' == $validation) {
|
|
$this->updateAttributes(array('onsubmit' => 'try { var myValidator = validate_' . $this->_formName . '; } catch(e) { return true; } return myValidator(this);'));
|
|
}
|
|
}
|
|
}
|
|
} elseif (is_string($arg1)) {
|
|
|
|
if ($validation == 'client') {
|
|
$this->updateAttributes(array('onsubmit' => 'try { var myValidator = validate_' . $this->_formName . '; } catch(e) { return true; } return myValidator(this);'));
|
|
}
|
|
}
|
|
} // end func addGroupRule
|
|
|
|
// }}}
|
|
/**
|
|
* Returns the client side validation script
|
|
*
|
|
* The code here was copied from HTML_QuickForm_DHTMLRulesTableless who copied it from HTML_QuickForm
|
|
* and slightly modified to run rules per-element
|
|
* Needed to override this because of an error with client side validation of grouped elements.
|
|
*
|
|
* @access public
|
|
* @return string Javascript to perform validation, empty string if no 'client' rules were added
|
|
*/
|
|
function getValidationScript()
|
|
{
|
|
if (empty($this->_rules) || empty($this->_attributes['onsubmit'])) {
|
|
return '';
|
|
}
|
|
|
|
include_once('HTML/QuickForm/RuleRegistry.php');
|
|
$registry =& HTML_QuickForm_RuleRegistry::singleton();
|
|
$test = array();
|
|
$js_escape = array(
|
|
"\r" => '\r',
|
|
"\n" => '\n',
|
|
"\t" => '\t',
|
|
"'" => "\\'",
|
|
'"' => '\"',
|
|
'\\' => '\\\\'
|
|
);
|
|
|
|
foreach ($this->_rules as $elementName => $rules) {
|
|
foreach ($rules as $rule) {
|
|
if ('client' == $rule['validation']) {
|
|
unset($element); //TODO: find out how to properly initialize it
|
|
|
|
$dependent = isset($rule['dependent']) && is_array($rule['dependent']);
|
|
$rule['message'] = strtr($rule['message'], $js_escape);
|
|
|
|
if (isset($rule['group'])) {
|
|
$group =& $this->getElement($rule['group']);
|
|
// No JavaScript validation for frozen elements
|
|
if ($group->isFrozen()) {
|
|
continue 2;
|
|
}
|
|
$elements =& $group->getElements();
|
|
foreach (array_keys($elements) as $key) {
|
|
if ($elementName == $group->getElementName($key)) {
|
|
$element =& $elements[$key];
|
|
break;
|
|
}
|
|
}
|
|
} elseif ($dependent) {
|
|
$element = array();
|
|
$element[] =& $this->getElement($elementName);
|
|
foreach ($rule['dependent'] as $elName) {
|
|
$element[] =& $this->getElement($elName);
|
|
}
|
|
} else {
|
|
$element =& $this->getElement($elementName);
|
|
}
|
|
// No JavaScript validation for frozen elements
|
|
if (is_object($element) && $element->isFrozen()) {
|
|
continue 2;
|
|
} elseif (is_array($element)) {
|
|
foreach (array_keys($element) as $key) {
|
|
if ($element[$key]->isFrozen()) {
|
|
continue 3;
|
|
}
|
|
}
|
|
}
|
|
// Fix for bug displaying errors for elements in a group
|
|
//$test[$elementName][] = $registry->getValidationScript($element, $elementName, $rule);
|
|
$test[$elementName][0][] = $registry->getValidationScript($element, $elementName, $rule);
|
|
$test[$elementName][1]=$element;
|
|
//end of fix
|
|
}
|
|
}
|
|
}
|
|
|
|
// Fix for MDL-9524. If you don't do this, then $element may be left as a reference to one of the fields in
|
|
// the form, and then that form field gets corrupted by the code that follows.
|
|
unset($element);
|
|
|
|
$js = '
|
|
<script type="text/javascript">
|
|
//<![CDATA[
|
|
|
|
var skipClientValidation = false;
|
|
|
|
function qf_errorHandler(element, _qfMsg) {
|
|
div = element.parentNode;
|
|
if (_qfMsg != \'\') {
|
|
var errorSpan = document.getElementById(\'id_error_\'+element.name);
|
|
if (!errorSpan) {
|
|
errorSpan = document.createElement("span");
|
|
errorSpan.id = \'id_error_\'+element.name;
|
|
errorSpan.className = "error";
|
|
element.parentNode.insertBefore(errorSpan, element.parentNode.firstChild);
|
|
}
|
|
|
|
while (errorSpan.firstChild) {
|
|
errorSpan.removeChild(errorSpan.firstChild);
|
|
}
|
|
|
|
errorSpan.appendChild(document.createTextNode(_qfMsg.substring(3)));
|
|
errorSpan.appendChild(document.createElement("br"));
|
|
|
|
if (div.className.substr(div.className.length - 6, 6) != " error"
|
|
&& div.className != "error") {
|
|
div.className += " error";
|
|
}
|
|
|
|
return false;
|
|
} else {
|
|
var errorSpan = document.getElementById(\'id_error_\'+element.name);
|
|
if (errorSpan) {
|
|
errorSpan.parentNode.removeChild(errorSpan);
|
|
}
|
|
|
|
if (div.className.substr(div.className.length - 6, 6) == " error") {
|
|
div.className = div.className.substr(0, div.className.length - 6);
|
|
} else if (div.className == "error") {
|
|
div.className = "";
|
|
}
|
|
|
|
return true;
|
|
}
|
|
}';
|
|
$validateJS = '';
|
|
foreach ($test as $elementName => $jsandelement) {
|
|
// Fix for bug displaying errors for elements in a group
|
|
//unset($element);
|
|
list($jsArr,$element)=$jsandelement;
|
|
//end of fix
|
|
$js .= '
|
|
function validate_' . $this->_formName . '_' . $elementName . '(element) {
|
|
var value = \'\';
|
|
var errFlag = new Array();
|
|
var _qfGroups = {};
|
|
var _qfMsg = \'\';
|
|
var frm = element.parentNode;
|
|
while (frm && frm.nodeName.toUpperCase() != "FORM") {
|
|
frm = frm.parentNode;
|
|
}
|
|
' . join("\n", $jsArr) . '
|
|
return qf_errorHandler(element, _qfMsg);
|
|
}
|
|
';
|
|
$validateJS .= '
|
|
ret = validate_' . $this->_formName . '_' . $elementName.'(frm.elements[\''.$elementName.'\']) && ret;
|
|
if (!ret && !first_focus) {
|
|
first_focus = true;
|
|
frm.elements[\''.$elementName.'\'].focus();
|
|
}
|
|
';
|
|
|
|
// Fix for bug displaying errors for elements in a group
|
|
//unset($element);
|
|
//$element =& $this->getElement($elementName);
|
|
//end of fix
|
|
$valFunc = 'validate_' . $this->_formName . '_' . $elementName . '(this)';
|
|
$onBlur = $element->getAttribute('onBlur');
|
|
$onChange = $element->getAttribute('onChange');
|
|
$element->updateAttributes(array('onBlur' => $onBlur . $valFunc,
|
|
'onChange' => $onChange . $valFunc));
|
|
}
|
|
// do not rely on frm function parameter, because htmlarea breaks it when overloading the onsubmit method
|
|
$js .= '
|
|
function validate_' . $this->_formName . '(frm) {
|
|
if (skipClientValidation) {
|
|
return true;
|
|
}
|
|
var ret = true;
|
|
|
|
var frm = document.getElementById(\''. $this->_attributes['id'] .'\')
|
|
var first_focus = false;
|
|
' . $validateJS . ';
|
|
return ret;
|
|
}
|
|
//]]>
|
|
</script>';
|
|
return $js;
|
|
} // end func getValidationScript
|
|
function _setDefaultRuleMessages(){
|
|
foreach ($this->_rules as $field => $rulesarr){
|
|
foreach ($rulesarr as $key => $rule){
|
|
if ($rule['message']===null){
|
|
$a=new object();
|
|
$a->format=$rule['format'];
|
|
$str=get_string('err_'.$rule['type'], 'form', $a);
|
|
if (strpos($str, '[[')!==0){
|
|
$this->_rules[$field][$key]['message']=$str;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @return string
|
|
*/
|
|
function getLockOptionEndScript(){
|
|
|
|
$iname = $this->getAttribute('id').'items';
|
|
$js = '<script type="text/javascript">'."\n";
|
|
$js .= '//<![CDATA['."\n";
|
|
$js .= "var $iname = Array();\n";
|
|
|
|
foreach ($this->_dependencies as $dependentOn => $conditions){
|
|
$js .= "{$iname}['$dependentOn'] = Array();\n";
|
|
foreach ($conditions as $condition=>$values) {
|
|
$js .= "{$iname}['$dependentOn']['$condition'] = Array();\n";
|
|
foreach ($values as $value=>$dependents) {
|
|
$js .= "{$iname}['$dependentOn']['$condition']['$value'] = Array();\n";
|
|
$i = 0;
|
|
foreach ($dependents as $dependent) {
|
|
$elements = $this->_getElNamesRecursive($dependent);
|
|
if (empty($elements)) {
|
|
// probably element inside of some group
|
|
$elements = array($dependent);
|
|
}
|
|
foreach($elements as $element) {
|
|
if ($element == $dependentOn) {
|
|
continue;
|
|
}
|
|
$js .= "{$iname}['$dependentOn']['$condition']['$value'][$i]='$element';\n";
|
|
$i++;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
$js .="lockoptionsallsetup('".$this->getAttribute('id')."');\n";
|
|
$js .='//]]>'."\n";
|
|
$js .='</script>'."\n";
|
|
return $js;
|
|
}
|
|
|
|
/**
|
|
* @param mixed $element
|
|
* @return array
|
|
*/
|
|
function _getElNamesRecursive($element) {
|
|
if (is_string($element)) {
|
|
if (!$this->elementExists($element)) {
|
|
return array();
|
|
}
|
|
$element = $this->getElement($element);
|
|
}
|
|
|
|
if (is_a($element, 'HTML_QuickForm_group')) {
|
|
$elsInGroup = $element->getElements();
|
|
$elNames = array();
|
|
foreach ($elsInGroup as $elInGroup){
|
|
if (is_a($elInGroup, 'HTML_QuickForm_group')) {
|
|
// not sure if this would work - groups nested in groups
|
|
$elNames = array_merge($elNames, $this->_getElNamesRecursive($elInGroup));
|
|
} else {
|
|
$elNames[] = $element->getElementName($elInGroup->getName());
|
|
}
|
|
}
|
|
|
|
} else if (is_a($element, 'HTML_QuickForm_header')) {
|
|
return array();
|
|
|
|
} else if (is_a($element, 'HTML_QuickForm_hidden')) {
|
|
return array();
|
|
|
|
} else if (method_exists($element, 'getPrivateName')) {
|
|
return array($element->getPrivateName());
|
|
|
|
} else {
|
|
$elNames = array($element->getName());
|
|
}
|
|
|
|
return $elNames;
|
|
}
|
|
|
|
/**
|
|
* Adds a dependency for $elementName which will be disabled if $condition is met.
|
|
* If $condition = 'notchecked' (default) then the condition is that the $dependentOn element
|
|
* is not checked. If $condition = 'checked' then the condition is that the $dependentOn element
|
|
* is checked. If $condition is something else (like "eq" for equals) then it is checked to see if the value
|
|
* of the $dependentOn element is $condition (such as equal) to $value.
|
|
*
|
|
* @param string $elementName the name of the element which will be disabled
|
|
* @param string $dependentOn the name of the element whose state will be checked for
|
|
* condition
|
|
* @param string $condition the condition to check
|
|
* @param mixed $value used in conjunction with condition.
|
|
*/
|
|
function disabledIf($elementName, $dependentOn, $condition = 'notchecked', $value='1'){
|
|
if (!array_key_exists($dependentOn, $this->_dependencies)) {
|
|
$this->_dependencies[$dependentOn] = array();
|
|
}
|
|
if (!array_key_exists($condition, $this->_dependencies[$dependentOn])) {
|
|
$this->_dependencies[$dependentOn][$condition] = array();
|
|
}
|
|
if (!array_key_exists($value, $this->_dependencies[$dependentOn][$condition])) {
|
|
$this->_dependencies[$dependentOn][$condition][$value] = array();
|
|
}
|
|
$this->_dependencies[$dependentOn][$condition][$value][] = $elementName;
|
|
}
|
|
|
|
function registerNoSubmitButton($buttonname){
|
|
$this->_noSubmitButtons[]=$buttonname;
|
|
}
|
|
|
|
/**
|
|
* @param string $buttonname
|
|
* @return mixed
|
|
*/
|
|
function isNoSubmitButton($buttonname){
|
|
return (array_search($buttonname, $this->_noSubmitButtons)!==FALSE);
|
|
}
|
|
|
|
/**
|
|
* @param string $buttonname
|
|
*/
|
|
function _registerCancelButton($addfieldsname){
|
|
$this->_cancelButtons[]=$addfieldsname;
|
|
}
|
|
/**
|
|
* Displays elements without HTML input tags.
|
|
* This method is different to freeze() in that it makes sure no hidden
|
|
* elements are included in the form.
|
|
* Note: If you want to make sure the submitted value is ignored, please use setDefaults().
|
|
*
|
|
* This function also removes all previously defined rules.
|
|
*
|
|
* @param mixed $elementList array or string of element(s) to be frozen
|
|
* @access public
|
|
*/
|
|
function hardFreeze($elementList=null)
|
|
{
|
|
if (!isset($elementList)) {
|
|
$this->_freezeAll = true;
|
|
$elementList = array();
|
|
} else {
|
|
if (!is_array($elementList)) {
|
|
$elementList = preg_split('/[ ]*,[ ]*/', $elementList);
|
|
}
|
|
$elementList = array_flip($elementList);
|
|
}
|
|
|
|
foreach (array_keys($this->_elements) as $key) {
|
|
$name = $this->_elements[$key]->getName();
|
|
if ($this->_freezeAll || isset($elementList[$name])) {
|
|
$this->_elements[$key]->freeze();
|
|
$this->_elements[$key]->setPersistantFreeze(false);
|
|
unset($elementList[$name]);
|
|
|
|
// remove all rules
|
|
$this->_rules[$name] = array();
|
|
// if field is required, remove the rule
|
|
$unset = array_search($name, $this->_required);
|
|
if ($unset !== false) {
|
|
unset($this->_required[$unset]);
|
|
}
|
|
}
|
|
}
|
|
|
|
if (!empty($elementList)) {
|
|
return PEAR::raiseError(null, QUICKFORM_NONEXIST_ELEMENT, null, E_USER_WARNING, "Nonexistant element(s): '" . implode("', '", array_keys($elementList)) . "' in HTML_QuickForm::freeze()", 'HTML_QuickForm_Error', true);
|
|
}
|
|
return true;
|
|
}
|
|
/**
|
|
* Hard freeze all elements in a form except those whose names are in $elementList or hidden elements in a form.
|
|
*
|
|
* This function also removes all previously defined rules of elements it freezes.
|
|
*
|
|
* throws HTML_QuickForm_Error
|
|
*
|
|
* @param array $elementList array or string of element(s) not to be frozen
|
|
* @access public
|
|
*/
|
|
function hardFreezeAllVisibleExcept($elementList)
|
|
{
|
|
$elementList = array_flip($elementList);
|
|
foreach (array_keys($this->_elements) as $key) {
|
|
$name = $this->_elements[$key]->getName();
|
|
$type = $this->_elements[$key]->getType();
|
|
|
|
if ($type == 'hidden'){
|
|
// leave hidden types as they are
|
|
} elseif (!isset($elementList[$name])) {
|
|
$this->_elements[$key]->freeze();
|
|
$this->_elements[$key]->setPersistantFreeze(false);
|
|
|
|
// remove all rules
|
|
$this->_rules[$name] = array();
|
|
// if field is required, remove the rule
|
|
$unset = array_search($name, $this->_required);
|
|
if ($unset !== false) {
|
|
unset($this->_required[$unset]);
|
|
}
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
/**
|
|
* Tells whether the form was already submitted
|
|
*
|
|
* This is useful since the _submitFiles and _submitValues arrays
|
|
* may be completely empty after the trackSubmit value is removed.
|
|
*
|
|
* @access public
|
|
* @return bool
|
|
*/
|
|
function isSubmitted()
|
|
{
|
|
return parent::isSubmitted() && (!$this->isFrozen());
|
|
}
|
|
}
|
|
|
|
|
|
/**
|
|
* A renderer for MoodleQuickForm that only uses XHTML and CSS and no
|
|
* table tags, extends PEAR class HTML_QuickForm_Renderer_Tableless
|
|
*
|
|
* Stylesheet is part of standard theme and should be automatically included.
|
|
*
|
|
* @package moodlecore
|
|
* @copyright Jamie Pratt <me@jamiep.org>
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* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
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*/
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class MoodleQuickForm_Renderer extends HTML_QuickForm_Renderer_Tableless{
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/**
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* Element template array
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* @var array
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* @access private
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*/
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var $_elementTemplates;
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/**
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* Template used when opening a hidden fieldset
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* (i.e. a fieldset that is opened when there is no header element)
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* @var string
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* @access private
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*/
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var $_openHiddenFieldsetTemplate = "\n\t<fieldset class=\"hidden\"><div>";
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/**
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* Header Template string
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* @var string
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* @access private
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*/
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var $_headerTemplate =
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"\n\t\t<legend class=\"ftoggler\">{header}</legend>\n\t\t<div class=\"advancedbutton\">{advancedimg}{button}</div><div class=\"fcontainer clearfix\">\n\t\t";
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/**
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* Template used when opening a fieldset
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* @var string
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* @access private
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*/
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var $_openFieldsetTemplate = "\n\t<fieldset class=\"clearfix\" {id}>";
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/**
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* Template used when closing a fieldset
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* @var string
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* @access private
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*/
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var $_closeFieldsetTemplate = "\n\t\t</div></fieldset>";
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/**
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* Required Note template string
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* @var string
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* @access private
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*/
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var $_requiredNoteTemplate =
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"\n\t\t<div class=\"fdescription required\">{requiredNote}</div>";
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var $_advancedElements = array();
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/**
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* Whether to display advanced elements (on page load)
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*
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* @var integer 1 means show 0 means hide
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*/
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var $_showAdvanced;
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function MoodleQuickForm_Renderer(){
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// switch next two lines for ol li containers for form items.
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// $this->_elementTemplates=array('default'=>"\n\t\t".'<li class="fitem"><label>{label}{help}<!-- BEGIN required -->{req}<!-- END required --></label><div class="qfelement<!-- BEGIN error --> error<!-- END error --> {type}"><!-- BEGIN error --><span class="error">{error}</span><br /><!-- END error -->{element}</div></li>');
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$this->_elementTemplates = array(
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'default'=>"\n\t\t".'<div class="fitem {advanced}<!-- BEGIN required --> required<!-- END required -->"><div class="fitemtitle"><label>{label}<!-- BEGIN required -->{req}<!-- END required -->{advancedimg} {help}</label></div><div class="felement {type}<!-- BEGIN error --> error<!-- END error -->"><!-- BEGIN error --><span class="error">{error}</span><br /><!-- END error -->{element}</div></div>',
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'fieldset'=>"\n\t\t".'<div class="fitem {advanced}<!-- BEGIN required --> required<!-- END required -->"><div class="fitemtitle"><div class="fgrouplabel"><label>{label}<!-- BEGIN required -->{req}<!-- END required -->{advancedimg} {help}</label></div></div><fieldset class="felement {type}<!-- BEGIN error --> error<!-- END error -->"><!-- BEGIN error --><span class="error">{error}</span><br /><!-- END error -->{element}</fieldset></div>',
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'static'=>"\n\t\t".'<div class="fitem {advanced}"><div class="fitemtitle"><div class="fstaticlabel"><label>{label}<!-- BEGIN required -->{req}<!-- END required -->{advancedimg} {help}</label></div></div><div class="felement fstatic <!-- BEGIN error --> error<!-- END error -->"><!-- BEGIN error --><span class="error">{error}</span><br /><!-- END error -->{element} </div></div>',
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'warning'=>"\n\t\t".'<div class="fitem {advanced}">{element}</div>',
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'nodisplay'=>'');
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parent::HTML_QuickForm_Renderer_Tableless();
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}
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/**
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* @param array $elements
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*/
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function setAdvancedElements($elements){
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$this->_advancedElements = $elements;
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}
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/**
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* What to do when starting the form
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*
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* @param object $form MoodleQuickForm
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*/
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function startForm(&$form){
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$this->_reqHTML = $form->getReqHTML();
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$this->_elementTemplates = str_replace('{req}', $this->_reqHTML, $this->_elementTemplates);
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$this->_advancedHTML = $form->getAdvancedHTML();
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$this->_showAdvanced = $form->getShowAdvanced();
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parent::startForm($form);
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if ($form->isFrozen()){
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$this->_formTemplate = "\n<div class=\"mform frozen\">\n{content}\n</div>";
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} else {
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$this->_formTemplate = "\n<form{attributes}>\n\t<div style=\"display: none;\">{hidden}</div>\n{content}\n</form>";
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$this->_hiddenHtml .= $form->_pageparams;
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}
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}
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/**
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* @param object $group Passed by reference
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* @param mixed $required
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* @param mixed $error
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*/
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function startGroup(&$group, $required, $error){
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if (method_exists($group, 'getElementTemplateType')){
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$html = $this->_elementTemplates[$group->getElementTemplateType()];
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}else{
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$html = $this->_elementTemplates['default'];
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}
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if ($this->_showAdvanced){
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$advclass = ' advanced';
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} else {
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$advclass = ' advanced hide';
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}
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if (isset($this->_advancedElements[$group->getName()])){
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$html =str_replace(' {advanced}', $advclass, $html);
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$html =str_replace('{advancedimg}', $this->_advancedHTML, $html);
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} else {
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$html =str_replace(' {advanced}', '', $html);
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$html =str_replace('{advancedimg}', '', $html);
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}
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if (method_exists($group, 'getHelpButton')){
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$html =str_replace('{help}', $group->getHelpButton(), $html);
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}else{
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$html =str_replace('{help}', '', $html);
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}
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$html =str_replace('{name}', $group->getName(), $html);
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$html =str_replace('{type}', 'fgroup', $html);
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$this->_templates[$group->getName()]=$html;
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// Fix for bug in tableless quickforms that didn't allow you to stop a
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// fieldset before a group of elements.
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// if the element name indicates the end of a fieldset, close the fieldset
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if ( in_array($group->getName(), $this->_stopFieldsetElements)
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&& $this->_fieldsetsOpen > 0
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) {
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$this->_html .= $this->_closeFieldsetTemplate;
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$this->_fieldsetsOpen--;
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}
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parent::startGroup($group, $required, $error);
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}
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/**
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* @param object $element
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* @param mixed $required
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* @param mixed $error
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*/
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function renderElement(&$element, $required, $error){
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//manipulate id of all elements before rendering
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if (!is_null($element->getAttribute('id'))) {
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$id = $element->getAttribute('id');
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} else {
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$id = $element->getName();
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}
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//strip qf_ prefix and replace '[' with '_' and strip ']'
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$id = preg_replace(array('/^qf_|\]/', '/\[/'), array('', '_'), $id);
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if (strpos($id, 'id_') !== 0){
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$element->updateAttributes(array('id'=>'id_'.$id));
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}
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//adding stuff to place holders in template
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//check if this is a group element first
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if (($this->_inGroup) and !empty($this->_groupElementTemplate)) {
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// so it gets substitutions for *each* element
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$html = $this->_groupElementTemplate;
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}
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elseif (method_exists($element, 'getElementTemplateType')){
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$html = $this->_elementTemplates[$element->getElementTemplateType()];
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}else{
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$html = $this->_elementTemplates['default'];
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}
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if ($this->_showAdvanced){
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$advclass = ' advanced';
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} else {
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$advclass = ' advanced hide';
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}
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if (isset($this->_advancedElements[$element->getName()])){
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$html =str_replace(' {advanced}', $advclass, $html);
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} else {
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$html =str_replace(' {advanced}', '', $html);
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}
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if (isset($this->_advancedElements[$element->getName()])||$element->getName() == 'mform_showadvanced'){
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$html =str_replace('{advancedimg}', $this->_advancedHTML, $html);
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} else {
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$html =str_replace('{advancedimg}', '', $html);
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}
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$html =str_replace('{type}', 'f'.$element->getType(), $html);
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$html =str_replace('{name}', $element->getName(), $html);
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if (method_exists($element, 'getHelpButton')){
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$html = str_replace('{help}', $element->getHelpButton(), $html);
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}else{
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$html = str_replace('{help}', '', $html);
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}
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if (($this->_inGroup) and !empty($this->_groupElementTemplate)) {
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$this->_groupElementTemplate = $html;
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}
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elseif (!isset($this->_templates[$element->getName()])) {
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$this->_templates[$element->getName()] = $html;
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}
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parent::renderElement($element, $required, $error);
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}
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/**
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* @param object $form Passed by reference
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*/
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function finishForm(&$form){
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if ($form->isFrozen()){
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$this->_hiddenHtml = '';
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}
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parent::finishForm($form);
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if ((!$form->isFrozen()) && ('' != ($script = $form->getLockOptionEndScript()))) {
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// add a lockoptions script
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$this->_html = $this->_html . "\n" . $script;
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}
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}
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/**
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* Called when visiting a header element
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*
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* @param object $header An HTML_QuickForm_header element being visited
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* @access public
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* @return void
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*/
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function renderHeader(&$header) {
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global $PAGE;
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static $advformcount;
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// This ensures that if 2(+) advanced buttons are used
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// that all show/hide buttons appear in the correct place
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// Because of now using $PAGE->requires->js_function_call
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if ($advformcount==null) {
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$advformcount = 1;
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}
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$name = $header->getName();
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$id = empty($name) ? '' : ' id="' . $name . '"';
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$id = preg_replace(array('/\]/', '/\[/'), array('', '_'), $id);
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if (is_null($header->_text)) {
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$header_html = '';
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} elseif (!empty($name) && isset($this->_templates[$name])) {
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$header_html = str_replace('{header}', $header->toHtml(), $this->_templates[$name]);
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} else {
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$header_html = str_replace('{header}', $header->toHtml(), $this->_headerTemplate);
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}
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if (isset($this->_advancedElements[$name])){
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$header_html =str_replace('{advancedimg}', $this->_advancedHTML, $header_html);
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} else {
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$header_html =str_replace('{advancedimg}', '', $header_html);
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}
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$elementName='mform_showadvanced';
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if ($this->_showAdvanced==0){
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$buttonlabel = get_string('showadvanced', 'form');
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} else {
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$buttonlabel = get_string('hideadvanced', 'form');
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}
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if (isset($this->_advancedElements[$name])){
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$PAGE->requires->yui2_lib('event');
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// this is tricky - the first submit button on form is "clicked" if user presses enter
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// we do not want to "submit" using advanced button if javascript active
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$button_nojs = '<input name="'.$elementName.'" id="'.$elementName.(string)$advformcount.'" class="showadvancedbtn" value="'.$buttonlabel.'" type="submit" />';
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$buttonlabel = addslashes_js($buttonlabel);
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$PAGE->requires->string_for_js('showadvanced', 'form');
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$PAGE->requires->string_for_js('hideadvanced', 'form');
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$PAGE->requires->js_function_call('showAdvancedInit', Array($elementName.(string)$advformcount, $elementName, $buttonlabel));
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$advformcount++;
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$header_html = str_replace('{button}', $button_nojs, $header_html);
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} else {
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$header_html = str_replace('{button}', '', $header_html);
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}
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if ($this->_fieldsetsOpen > 0) {
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$this->_html .= $this->_closeFieldsetTemplate;
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$this->_fieldsetsOpen--;
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}
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$openFieldsetTemplate = str_replace('{id}', $id, $this->_openFieldsetTemplate);
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if ($this->_showAdvanced){
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$advclass = ' class="advanced"';
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} else {
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$advclass = ' class="advanced hide"';
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}
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if (isset($this->_advancedElements[$name])){
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$openFieldsetTemplate = str_replace('{advancedclass}', $advclass, $openFieldsetTemplate);
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} else {
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$openFieldsetTemplate = str_replace('{advancedclass}', '', $openFieldsetTemplate);
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}
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$this->_html .= $openFieldsetTemplate . $header_html;
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$this->_fieldsetsOpen++;
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} // end func renderHeader
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function getStopFieldsetElements(){
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return $this->_stopFieldsetElements;
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}
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}
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/**
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* @global object $GLOBALS['_HTML_QuickForm_default_renderer']
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* @name $_HTML_QuickForm_default_renderer
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*/
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$GLOBALS['_HTML_QuickForm_default_renderer'] = new MoodleQuickForm_Renderer();
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/** Please keep this list in alphabetical order. */
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MoodleQuickForm::registerElementType('advcheckbox', "$CFG->libdir/form/advcheckbox.php", 'MoodleQuickForm_advcheckbox');
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MoodleQuickForm::registerElementType('button', "$CFG->libdir/form/button.php", 'MoodleQuickForm_button');
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MoodleQuickForm::registerElementType('cancel', "$CFG->libdir/form/cancel.php", 'MoodleQuickForm_cancel');
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MoodleQuickForm::registerElementType('searchableselector', "$CFG->libdir/form/searchableselector.php", 'MoodleQuickForm_searchableselector');
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MoodleQuickForm::registerElementType('checkbox', "$CFG->libdir/form/checkbox.php", 'MoodleQuickForm_checkbox');
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MoodleQuickForm::registerElementType('date_selector', "$CFG->libdir/form/dateselector.php", 'MoodleQuickForm_date_selector');
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MoodleQuickForm::registerElementType('date_time_selector', "$CFG->libdir/form/datetimeselector.php", 'MoodleQuickForm_date_time_selector');
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MoodleQuickForm::registerElementType('duration', "$CFG->libdir/form/duration.php", 'MoodleQuickForm_duration');
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MoodleQuickForm::registerElementType('editor', "$CFG->libdir/form/editor.php", 'MoodleQuickForm_editor');
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MoodleQuickForm::registerElementType('file', "$CFG->libdir/form/file.php", 'MoodleQuickForm_file');
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MoodleQuickForm::registerElementType('filemanager', "$CFG->libdir/form/filemanager.php", 'MoodleQuickForm_filemanager');
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MoodleQuickForm::registerElementType('filepicker', "$CFG->libdir/form/filepicker.php", 'MoodleQuickForm_filepicker');
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MoodleQuickForm::registerElementType('format', "$CFG->libdir/form/format.php", 'MoodleQuickForm_format');
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MoodleQuickForm::registerElementType('group', "$CFG->libdir/form/group.php", 'MoodleQuickForm_group');
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MoodleQuickForm::registerElementType('header', "$CFG->libdir/form/header.php", 'MoodleQuickForm_header');
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MoodleQuickForm::registerElementType('hidden', "$CFG->libdir/form/hidden.php", 'MoodleQuickForm_hidden');
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MoodleQuickForm::registerElementType('htmleditor', "$CFG->libdir/form/htmleditor.php", 'MoodleQuickForm_htmleditor');
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MoodleQuickForm::registerElementType('modgrade', "$CFG->libdir/form/modgrade.php", 'MoodleQuickForm_modgrade');
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MoodleQuickForm::registerElementType('modvisible', "$CFG->libdir/form/modvisible.php", 'MoodleQuickForm_modvisible');
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MoodleQuickForm::registerElementType('password', "$CFG->libdir/form/password.php", 'MoodleQuickForm_password');
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MoodleQuickForm::registerElementType('passwordunmask', "$CFG->libdir/form/passwordunmask.php", 'MoodleQuickForm_passwordunmask');
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MoodleQuickForm::registerElementType('questioncategory', "$CFG->libdir/form/questioncategory.php", 'MoodleQuickForm_questioncategory');
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MoodleQuickForm::registerElementType('radio', "$CFG->libdir/form/radio.php", 'MoodleQuickForm_radio');
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MoodleQuickForm::registerElementType('recaptcha', "$CFG->libdir/form/recaptcha.php", 'MoodleQuickForm_recaptcha');
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MoodleQuickForm::registerElementType('select', "$CFG->libdir/form/select.php", 'MoodleQuickForm_select');
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MoodleQuickForm::registerElementType('selectgroups', "$CFG->libdir/form/selectgroups.php", 'MoodleQuickForm_selectgroups');
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MoodleQuickForm::registerElementType('selectwithlink', "$CFG->libdir/form/selectwithlink.php", 'MoodleQuickForm_selectwithlink');
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MoodleQuickForm::registerElementType('selectyesno', "$CFG->libdir/form/selectyesno.php", 'MoodleQuickForm_selectyesno');
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MoodleQuickForm::registerElementType('static', "$CFG->libdir/form/static.php", 'MoodleQuickForm_static');
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MoodleQuickForm::registerElementType('submit', "$CFG->libdir/form/submit.php", 'MoodleQuickForm_submit');
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MoodleQuickForm::registerElementType('submitlink', "$CFG->libdir/form/submitlink.php", 'MoodleQuickForm_submitlink');
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MoodleQuickForm::registerElementType('tags', "$CFG->libdir/form/tags.php", 'MoodleQuickForm_tags');
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MoodleQuickForm::registerElementType('text', "$CFG->libdir/form/text.php", 'MoodleQuickForm_text');
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MoodleQuickForm::registerElementType('textarea', "$CFG->libdir/form/textarea.php", 'MoodleQuickForm_textarea');
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MoodleQuickForm::registerElementType('url', "$CFG->libdir/form/url.php", 'MoodleQuickForm_url');
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MoodleQuickForm::registerElementType('warning', "$CFG->libdir/form/warning.php", 'MoodleQuickForm_warning');
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