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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/>.
/**
* Drop down form element to select visibility in an activity mod update form
*
* Contains HTML class for a drop down element to select visibility in an activity mod update form
*
* @package core_form
* @copyright 2006 Jamie Pratt <me@jamiep.org>
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
global $CFG;
require_once "$CFG->libdir/form/select.php";
/**
* Drop down form element to select visibility in an activity mod update form
*
* HTML class for a drop down element to select visibility in an activity mod update form
*
* @package core_form
* @category form
* @copyright 2006 Jamie Pratt <me@jamiep.org>
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
class MoodleQuickForm_modvisible extends MoodleQuickForm_select{
/** @var int activity state: visible=0, visibleoncoursepage=any */
const HIDE = 0;
/** @var int activity state: visible=1, visibleoncoursepage=1 */
const SHOW = 1;
/** @var int activity state: visible=1, visibleoncoursepage=0 */
const STEALTH = -1;
/**
* Class constructor
*
* @param string $elementName Select name attribute
* @param mixed $elementLabel Label(s) for the select
* @param mixed $attributes Either a typical HTML attribute string or an associative array
* @param array $options ignored
*/
public function __construct($elementName=null, $elementLabel=null, $attributes=null, $options=null) {
parent::__construct($elementName, $elementLabel, null, $attributes);
$this->_type = 'modvisible';
}
/**
* Old syntax of class constructor. Deprecated in PHP7.
*
* @deprecated since Moodle 3.1
*/
public function MoodleQuickForm_modvisible($elementName=null, $elementLabel=null, $attributes=null, $options=null) {
debugging('Use of class name as constructor is deprecated', DEBUG_DEVELOPER);
self::__construct($elementName, $elementLabel, $attributes, $options);
}
/**
* Called by HTML_QuickForm whenever form event is made on this element
*
* @param string $event Name of event
* @param mixed $arg event arguments
* @param object $caller calling object
* @return bool
*/
public function onQuickFormEvent($event, $arg, &$caller) {
switch ($event) {
case 'createElement':
$options = is_array($arg[3]) ? $arg[3] : [];
$sectionvisible = array_key_exists('sectionvisible', $options) ? $options['sectionvisible'] : 1;
$cm = !empty($options['cm']) ? cm_info::create($options['cm']) : null;
$choices = array();
if (!$sectionvisible) {
// If section is not visible the activity is hidden by default but it can also be made available.
$choices[self::HIDE] = get_string('hidefromstudents');
if (!$cm || $cm->has_view()) {
$choices[self::SHOW] = get_string('hideoncoursepage');
}
} else {
$choices[self::SHOW] = get_string('showoncoursepage');
$choices[self::HIDE] = get_string('hidefromstudents');
if (!empty($options['allowstealth']) && (!$cm || $cm->has_view())) {
// If allowed in this course/section, add a third visibility option
// "Available but not displayed on course page".
$choices[self::STEALTH] = get_string('hideoncoursepage');
}
}
$this->load($choices);
break;
case 'updateValue':
// Given two bool values of 'visible' and 'visibleoncoursepage' convert to a single
// three-state value (show, hide, hide-on-course-page).
$name = $this->getName();
$value = $this->_findValue($caller->_constantValues);
if (!empty($value) && isset($caller->_constantValues[$name.'oncoursepage']) &&
!$caller->_constantValues[$name.'oncoursepage']) {
$value = self::STEALTH;
}
if (null === $value) {
if ($caller->isSubmitted()) {
break;
}
$value = $this->_findValue($caller->_defaultValues);
if (!empty($value) && isset($caller->_defaultValues[$name.'oncoursepage']) &&
!$caller->_defaultValues[$name.'oncoursepage']) {
$value = self::STEALTH;
}
}
if ($value !== null) {
$this->setSelected($value);
}
return true;
}
return parent::onQuickFormEvent($event, $arg, $caller);
}
/**
* As usual, to get the group's value we access its elements and call
* their exportValue() methods
*
* @param array $submitvalues submitted values
* @param bool $assoc if true the retured value is associated array
* @return mixed
*/
public function exportValue(&$submitvalues, $assoc = false) {
if ($assoc) {
$value = parent::exportValue($submitvalues, $assoc);
$key = key($value);
$v = $value[$key];
// Convert three-state dropdown value (show, hide, hide-on-course-page) into the array of two bool values:
// array('visible' => x, 'visibleoncoursepage' => y).
return array($key => ($v == self::HIDE ? 0 : 1),
$key . 'oncoursepage' => ($v == self::STEALTH ? 0 : 1));
} else {
return parent::exportValue($submitvalues, $assoc);
}
}
}