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See Release Notes
Long Term Support Release

  • Bug fixes for general core bugs in 3.9.x will end* 10 May 2021 (12 months).
  • Bug fixes for security issues in 3.9.x will end* 8 May 2023 (36 months).
  • PHP version: minimum PHP 7.2.0 Note: minimum PHP version has increased since Moodle 3.8. PHP 7.3.x and 7.4.x are supported too.
<?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/>.


/**
 * Creates an element with a dropdown Default/Custom and an input for the value (text or date_selector)
 *
 * @package   core_form
 * @copyright 2017 Marina Glancy
 * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */

global $CFG;
require_once($CFG->libdir . '/form/group.php');
require_once($CFG->libdir . '/formslib.php');

/**
 * Creates an element with a dropdown Default/Custom and an input for the value (text or date_selector)
 *
 * @package   core_form
 * @copyright 2017 Marina Glancy
 * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */
class MoodleQuickForm_defaultcustom extends MoodleQuickForm_group {

    /**
     * @var array These complement separators, they are appended to the resultant HTML.
     */
    protected $_wrap = array('', '');

    /**
     * @var null|bool Keeps track of whether the date selector was initialised using createElement
     *                or addElement. If true, createElement was used signifying the element has been
     *                added to a group - see MDL-39187.
     */
    protected $_usedcreateelement = true;

    /** @var array */
    protected $_options;

    /**
     * Constructor
     *
     * @param string $elementname Element's name
     * @param mixed $elementlabel Label(s) for an element
     * @param array $options Options to control the element's display
     * @param mixed $attributes Either a typical HTML attribute string or an associative array
     */
    public function __construct($elementname = null, $elementlabel = null, $options = array(), $attributes = null) {
        parent::__construct($elementname, $elementlabel);
        $this->setAttributes($attributes);

        $this->_appendName = true;
        $this->_type = 'defaultcustom';

        $calendartype = \core_calendar\type_factory::get_calendar_instance();
        $this->_options = [
            'type' => 'text', // Type of the element. Supported are 'text' and 'date_selector'.
            'defaultvalue' => null, // Value to be used when not overridden.
            'customvalue' => null, // Value to be used when overwriting.
            'customlabel' => get_string('custom', 'form'), // Label for 'customize' checkbox
            // Other options are the same as the ones that can be passed to 'date_selector' element.
            'timezone' => 99,
            'startyear' => $calendartype->get_min_year(),
            'stopyear' => $calendartype->get_max_year(),
            'defaulttime' => 0,
            'step' => 1,
            'optional' => false,
        ];

        if (is_array($options)) {
            foreach ($options as $name => $value) {
                if (array_key_exists($name, $this->_options)) {
                    if ($name === 'type' && !in_array($value, ['text', 'date_selector', 'date_time_selector'])) {
                        throw new coding_exception('Only text, date_selector, and date_time_selector elements are supported in ' . $this->_type);
                    }
                    if ($name === 'optional' && $value) {
                        throw new coding_exception('Date selector can not be optional in ' . $this->_type);
                    }
                    $this->_options[$name] = $value;
                }
            }
        }
    }

    /**
     * Converts timestamp to the day/month/year array in the current calendar format
     * @param int $value
     * @return array
     */
    protected function timestamp_to_date_array($value) {
        $calendartype = \core_calendar\type_factory::get_calendar_instance();
< $currentdate = $calendartype->timestamp_to_date_array($value, $this->_options['timezone']);
> $currentdate = $calendartype->timestamp_to_date_array((int)$value, $this->_options['timezone']);
return array( 'minute' => $currentdate['minutes'], 'hour' => $currentdate['hours'], 'day' => $currentdate['mday'], 'month' => $currentdate['mon'], 'year' => $currentdate['year']); } /** * Should this element have default/custom switch? * * @return bool */ protected function has_customize_switch() { return $this->_options['defaultvalue'] !== null; } /** * This will create all elements in the group */ public function _createElements() { if (!$this->has_customize_switch()) { $element = $this->createFormElement('hidden', 'customize', 1); } else { $element = $this->createFormElement('advcheckbox', 'customize', '', $this->_options['customlabel']); } $this->_elements[] = $element; if ($this->_options['type'] === 'text') { $element = $this->createFormElement($this->_options['type'], 'value', get_string('newvaluefor', 'form', $this->getLabel()), $this->getAttributes()); $element->setHiddenLabel(true); } else if ($this->_options['type'] === 'date_selector') { $element = $this->createFormElement($this->_options['type'], 'value', '', $this->_options, $this->getAttributes()); } else if ($this->_options['type'] === 'date_time_selector') { $element = $this->createFormElement($this->_options['type'], 'value', '', $this->_options, $this->getAttributes()); } $this->_elements[] = $element; } /** * 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) { $this->setMoodleForm($caller); switch ($event) { case 'updateValue': // Constant values override both default and submitted ones // default values are overriden by submitted. $value = $this->_findValue($caller->_constantValues); if (null === $value) { // If no boxes were checked, then there is no value in the array // yet we don't want to display default value in this case. if ($caller->isSubmitted()) { $value = $this->_findValue($caller->_submitValues); } else { $value = $this->_findValue($caller->_defaultValues); } } if (!is_array($value)) { $customize = ($value !== false || !$this->has_customize_switch()); if ($this->_options['type'] === 'text') { $elementvalue = $customize ? $value : $this->_options['defaultvalue']; } else { $elementvalue = $this->timestamp_to_date_array($customize ? $value : $this->_options['defaultvalue']); } $value = [ 'customize' => $customize, 'value' => $elementvalue ]; } $this->setValue($value); break; case 'createElement': $rv = parent::onQuickFormEvent($event, $arg, $caller); if ($this->has_customize_switch()) { if ($this->_options['type'] === 'text') { $caller->disabledIf($arg[0] . '[value]', $arg[0] . '[customize]', 'notchecked'); } else if ($this->_options['type'] === 'date_selector') { $caller->disabledIf($arg[0] . '[value][day]', $arg[0] . '[customize]', 'notchecked'); $caller->disabledIf($arg[0] . '[value][month]', $arg[0] . '[customize]', 'notchecked'); $caller->disabledIf($arg[0] . '[value][year]', $arg[0] . '[customize]', 'notchecked'); } else { // Date / Time selector. $caller->disabledIf($arg[0] . '[value][day]', $arg[0] . '[customize]', 'notchecked'); $caller->disabledIf($arg[0] . '[value][month]', $arg[0] . '[customize]', 'notchecked'); $caller->disabledIf($arg[0] . '[value][year]', $arg[0] . '[customize]', 'notchecked'); $caller->disabledIf($arg[0] . '[value][hour]', $arg[0] . '[customize]', 'notchecked'); $caller->disabledIf($arg[0] . '[value][minute]', $arg[0] . '[customize]', 'notchecked'); } } return $rv; case 'addElement': $this->_usedcreateelement = false; return parent::onQuickFormEvent($event, $arg, $caller); break; default: return parent::onQuickFormEvent($event, $arg, $caller); } } public function freeze() { parent::freeze(); $this->setPersistantFreeze(true); } public function toHtml() { include_once('HTML/QuickForm/Renderer/Default.php'); $renderer = new HTML_QuickForm_Renderer_Default(); $renderer->setElementTemplate('{element}'); parent::accept($renderer); $html = $this->_wrap[0]; if ($this->_usedcreateelement) { $html .= html_writer::tag('span', $renderer->toHtml(), array('class' => 'fdefaultcustom')); } else { $html .= $renderer->toHtml(); } $html .= $this->_wrap[1]; return $html; } public function accept(&$renderer, $required = false, $error = null) { global $PAGE; if (!$this->_flagFrozen && $this->has_customize_switch()) { // Add JS to the default/custom switch. $firstelement = reset($this->_elements); $defaultvalue = $this->_options['defaultvalue']; $customvalue = $this->_options['customvalue']; if ($this->_options['type'] === 'date_selector' || $this->_options['type'] === 'date_time_selector') { $defaultvalue = $this->timestamp_to_date_array($defaultvalue); $customvalue = $this->timestamp_to_date_array($customvalue); } $firstelement->updateAttributes(['data-defaultcustom' => 'true', 'data-type' => $this->_options['type'], 'data-defaultvalue' => json_encode($defaultvalue), 'data-customvalue' => json_encode($customvalue)]); $PAGE->requires->js_amd_inline("require(['core_form/defaultcustom'], function() {});"); } $renderer->renderElement($this, $required, $error); } /** * Output a value. Give it the name of the group. In case of "default" return false. * * @param array $submitvalues values submitted. * @param bool $assoc specifies if returned array is associative * @return array */ public function exportValue(&$submitvalues, $assoc = false) { $valuearray = array(); foreach ($this->_elements as $element) { $thisexport = $element->exportValue($submitvalues[$this->getName()], true); if ($thisexport != null) { $valuearray += $thisexport; } } if (empty($valuearray['customize'])) { return $this->_prepareValue(false, $assoc); } return array_key_exists('value', $valuearray) ? $this->_prepareValue($valuearray['value'], $assoc) : []; } }