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300 lines
12 KiB
300 lines
12 KiB
2 years ago
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<?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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* Group of date input element
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*
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* Contains class for a group of elements used to input a date.
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*
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* @package core_form
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* @copyright 2007 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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global $CFG;
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require_once($CFG->libdir . '/form/group.php');
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require_once($CFG->libdir . '/formslib.php');
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/**
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* Class for a group of elements used to input a date.
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*
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* Emulates moodle print_date_selector function
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*
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* @package core_form
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* @category form
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* @copyright 2007 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_date_selector extends MoodleQuickForm_group {
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/**
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* Control the fieldnames for form elements.
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*
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* startyear => int start of range of years that can be selected
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* stopyear => int last year that can be selected
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* timezone => int|float|string (optional) timezone modifier used for edge case only.
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* If not specified, then date is caclulated based on current user timezone.
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* Note: dst will be calculated for string timezones only
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* {@link http://docs.moodle.org/dev/Time_API#Timezone}
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* optional => if true, show a checkbox beside the date to turn it on (or off)
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* @var array
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*/
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protected $_options = array();
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/**
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* @var array These complement separators, they are appended to the resultant HTML.
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*/
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protected $_wrap = array('', '');
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/**
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* @var null|bool Keeps track of whether the date selector was initialised using createElement
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* or addElement. If true, createElement was used signifying the element has been
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* added to a group - see MDL-39187.
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*/
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protected $_usedcreateelement = true;
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/**
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* constructor
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*
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* @param string $elementName Element's name
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* @param mixed $elementLabel Label(s) for an element
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* @param array $options Options to control the element's display
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* @param mixed $attributes Either a typical HTML attribute string or an associative array
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*/
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public function __construct($elementName = null, $elementLabel = null, $options = array(), $attributes = null) {
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// Get the calendar type used - see MDL-18375.
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$calendartype = \core_calendar\type_factory::get_calendar_instance();
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$this->_options = array('startyear' => $calendartype->get_min_year(), 'stopyear' => $calendartype->get_max_year(),
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'defaulttime' => 0, 'timezone' => 99, 'step' => 1, 'optional' => false);
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// TODO MDL-52313 Replace with the call to parent::__construct().
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HTML_QuickForm_element::__construct($elementName, $elementLabel, $attributes);
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$this->_persistantFreeze = true;
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$this->_appendName = true;
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$this->_type = 'date_selector';
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// set the options, do not bother setting bogus ones
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if (is_array($options)) {
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foreach ($options as $name => $value) {
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if (isset($this->_options[$name])) {
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if (is_array($value) && is_array($this->_options[$name])) {
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$this->_options[$name] = @array_merge($this->_options[$name], $value);
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} else {
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$this->_options[$name] = $value;
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}
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}
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}
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}
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// The YUI2 calendar only supports the gregorian calendar type.
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if ($calendartype->get_name() === 'gregorian') {
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form_init_date_js();
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}
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}
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/**
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* Old syntax of class constructor. Deprecated in PHP7.
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*
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* @deprecated since Moodle 3.1
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*/
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public function MoodleQuickForm_date_selector($elementName = null, $elementLabel = null, $options = array(), $attributes = null) {
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debugging('Use of class name as constructor is deprecated', DEBUG_DEVELOPER);
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self::__construct($elementName, $elementLabel, $options, $attributes);
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}
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/**
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* This will create date group element constisting of day, month and year.
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*
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* @access private
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*/
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function _createElements() {
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global $OUTPUT;
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// Get the calendar type used - see MDL-18375.
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$calendartype = \core_calendar\type_factory::get_calendar_instance();
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$this->_elements = array();
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$dateformat = $calendartype->get_date_order($this->_options['startyear'], $this->_options['stopyear']);
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// Reverse date element (Day, Month, Year), in RTL mode.
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if (right_to_left()) {
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$dateformat = array_reverse($dateformat);
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}
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foreach ($dateformat as $key => $value) {
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// E_STRICT creating elements without forms is nasty because it internally uses $this
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$this->_elements[] = $this->createFormElement('select', $key, get_string($key, 'form'), $value, $this->getAttributes(), true);
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}
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// The YUI2 calendar only supports the gregorian calendar type so only display the calendar image if this is being used.
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if ($calendartype->get_name() === 'gregorian') {
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$image = $OUTPUT->pix_icon('i/calendar', get_string('calendar', 'calendar'), 'moodle');
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$this->_elements[] = $this->createFormElement('link', 'calendar',
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null, '#', $image,
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array('class' => 'visibleifjs'));
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}
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// If optional we add a checkbox which the user can use to turn if on
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if ($this->_options['optional']) {
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$this->_elements[] = $this->createFormElement('checkbox', 'enabled', null, get_string('enable'), $this->getAttributes(), true);
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}
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foreach ($this->_elements as $element){
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if (method_exists($element, 'setHiddenLabel')){
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$element->setHiddenLabel(true);
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}
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}
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}
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/**
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* Called by HTML_QuickForm whenever form event is made on this element
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*
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* @param string $event Name of event
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* @param mixed $arg event arguments
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* @param object $caller calling object
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* @return bool
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*/
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function onQuickFormEvent($event, $arg, &$caller) {
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$this->setMoodleForm($caller);
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switch ($event) {
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case 'updateValue':
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// Constant values override both default and submitted ones
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// default values are overriden by submitted.
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$value = $this->_findValue($caller->_constantValues);
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if (null === $value) {
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// If no boxes were checked, then there is no value in the array
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// yet we don't want to display default value in this case.
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if ($caller->isSubmitted()) {
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$value = $this->_findValue($caller->_submitValues);
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} else {
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$value = $this->_findValue($caller->_defaultValues);
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}
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}
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$requestvalue=$value;
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if ($value == 0) {
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$value = time();
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}
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if (!is_array($value)) {
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$calendartype = \core_calendar\type_factory::get_calendar_instance();
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$currentdate = $calendartype->timestamp_to_date_array($value, $this->_options['timezone']);
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$value = array(
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'day' => $currentdate['mday'],
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'month' => $currentdate['mon'],
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'year' => $currentdate['year']);
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// If optional, default to off, unless a date was provided.
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if ($this->_options['optional']) {
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$value['enabled'] = $requestvalue != 0;
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}
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} else {
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$value['enabled'] = isset($value['enabled']);
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}
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if (null !== $value) {
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$this->setValue($value);
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}
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break;
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case 'createElement':
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// Optional is an optional param, if its set we need to add a disabledIf rule.
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// If its empty or not specified then its not an optional dateselector.
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if (!empty($arg[2]['optional']) && !empty($arg[0])) {
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// When using the function addElement, rather than createElement, we still
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// enter this case, making this check necessary.
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if ($this->_usedcreateelement) {
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$caller->disabledIf($arg[0] . '[day]', $arg[0] . '[enabled]');
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$caller->disabledIf($arg[0] . '[month]', $arg[0] . '[enabled]');
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$caller->disabledIf($arg[0] . '[year]', $arg[0] . '[enabled]');
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} else {
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$caller->disabledIf($arg[0], $arg[0] . '[enabled]');
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}
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}
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return parent::onQuickFormEvent($event, $arg, $caller);
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break;
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case 'addElement':
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$this->_usedcreateelement = false;
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return parent::onQuickFormEvent($event, $arg, $caller);
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break;
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default:
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return parent::onQuickFormEvent($event, $arg, $caller);
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}
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}
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/**
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* Returns HTML for advchecbox form element.
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*
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* @return string
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*/
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function toHtml() {
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include_once('HTML/QuickForm/Renderer/Default.php');
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$renderer = new HTML_QuickForm_Renderer_Default();
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$renderer->setElementTemplate('{element}');
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parent::accept($renderer);
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$html = $this->_wrap[0];
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if ($this->_usedcreateelement) {
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$html .= html_writer::tag('span', $renderer->toHtml(), array('class' => 'fdate_selector'));
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} else {
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$html .= $renderer->toHtml();
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}
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$html .= $this->_wrap[1];
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return $html;
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}
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/**
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* Accepts a renderer
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*
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* @param HTML_QuickForm_Renderer $renderer An HTML_QuickForm_Renderer object
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* @param bool $required Whether a group is required
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* @param string $error An error message associated with a group
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*/
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function accept(&$renderer, $required = false, $error = null) {
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$renderer->renderElement($this, $required, $error);
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}
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/**
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* Output a timestamp. Give it the name of the group.
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*
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* @param array $submitValues values submitted.
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* @param bool $assoc specifies if returned array is associative
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* @return array
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*/
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function exportValue(&$submitValues, $assoc = false) {
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$valuearray = array();
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foreach ($this->_elements as $element){
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$thisexport = $element->exportValue($submitValues[$this->getName()], true);
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if ($thisexport!=null){
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$valuearray += $thisexport;
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}
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}
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if (count($valuearray) && isset($valuearray['year'])) {
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if($this->_options['optional']) {
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// If checkbox is on, the value is zero, so go no further
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if(empty($valuearray['enabled'])) {
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return $this->_prepareValue(0, $assoc);
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}
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}
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// Get the calendar type used - see MDL-18375.
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$calendartype = \core_calendar\type_factory::get_calendar_instance();
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$gregoriandate = $calendartype->convert_to_gregorian($valuearray['year'], $valuearray['month'], $valuearray['day']);
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$value = make_timestamp($gregoriandate['year'],
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$gregoriandate['month'],
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$gregoriandate['day'],
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0, 0, 0,
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$this->_options['timezone'],
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true);
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return $this->_prepareValue($value, $assoc);
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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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