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<?php
// This file is part of Moodle - http://moodle.org/
//
// Moodle is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Moodle is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
/**
* Element-container for advanced grading custom input
*
* @copyright 2011 Marina Glancy
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
global $CFG;
require_once("HTML/QuickForm/element.php");
require_once($CFG->dirroot.'/grade/grading/form/lib.php');
if (class_exists('HTML_QuickForm')) {
HTML_QuickForm::registerRule('gradingvalidated', 'callback', '_validate', 'MoodleQuickForm_grading');
}
/**
* HTML class for a grading element
*
* @author Marina Glancy
* @access public
*/
class MoodleQuickForm_grading extends HTML_QuickForm_input{
/**
* html for help button, if empty then no help
*
* @var string
*/
var $_helpbutton='';
private $gradingattributes;
function MoodleQuickForm_grading($elementName=null, $elementLabel=null, $attributes=null) {
parent::HTML_QuickForm_input($elementName, $elementLabel, $attributes);
$this->gradingattributes = $attributes;
}
function toHtml(){
return $this->get_controller()->to_html($this);
}
function get_grading_attribute($name) {
return $this->gradingattributes[$name];
}
function get_controller() {
return $this->get_grading_attribute('controller');
}
/**
* set html for help button
*
* @access public
* @param array $help array of arguments to make a help button
* @param string $function function name to call to get html
*/
function setHelpButton($helpbuttonargs, $function='helpbutton'){
debugging('component setHelpButton() is not used any more, please use $mform->setHelpButton() instead');
}
/**
* get html for help button
*
* @access public
* @return string html for help button
*/
function getHelpButton(){
return $this->_helpbutton;
}
/**
* @return string
*/
function getElementTemplateType(){
return 'default';
}
/**
* Adds necessary rules to the element
*/
function onQuickFormEvent($event, $arg, &$caller) {
if ($event == 'createElement') {
$attributes = $arg[2];
if (!is_array($attributes) || !array_key_exists('controller', $attributes) || !($attributes['controller'] instanceof gradingform_controller)) {
throw new moodle_exception('exc_gradingformelement', 'grading');
}
}
$name = $this->getName();
if ($name && $caller->elementExists($name)) {
$caller->addRule($name, $this->get_controller()->default_validation_error_message(), 'gradingvalidated', $this->gradingattributes);
}
return parent::onQuickFormEvent($event, $arg, $caller);
}
/**
* Function registered as rule for this element and is called when this element is being validated
*/
static function _validate($elementValue, $attributes = null) {
return $attributes['controller']->validate_grading_element($elementValue, $attributes['submissionid']);
}
}
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