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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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 * Customfields checkbox plugin
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 *
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 * @package   customfield_checkbox
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 * @copyright 2018 David Matamoros <davidmc@moodle.com>
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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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namespace customfield_checkbox;
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defined('MOODLE_INTERNAL') || die;
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/**
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 * Class field
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 *
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 * @package customfield_checkbox
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 * @copyright 2018 David Matamoros <davidmc@moodle.com>
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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 field_controller  extends \core_customfield\field_controller {
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    /**
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     * Plugin type
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     */
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    const TYPE = 'checkbox';
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    /**
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     * Add fields for editing a checkbox field.
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     *
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     * @param \MoodleQuickForm $mform
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     */
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    public function config_form_definition(\MoodleQuickForm $mform) {
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        $mform->addElement('header', 'header_specificsettings', get_string('specificsettings', 'customfield_checkbox'));
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        $mform->setExpanded('header_specificsettings', true);
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        $mform->addElement('selectyesno', 'configdata[checkbydefault]', get_string('checkedbydefault', 'customfield_checkbox'));
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        $mform->setType('configdata[checkbydefault]', PARAM_BOOL);
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    }
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    /**
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     * Validate the data on the field configuration form
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     *
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     * @param array $data from the add/edit profile field form
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     * @param array $files
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     * @return array associative array of error messages
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     */
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    public function config_form_validation(array $data, $files = array()): array {
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        $errors = parent::config_form_validation($data, $files);
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        if ($data['configdata']['uniquevalues']) {
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            $errors['configdata[uniquevalues]'] = get_string('errorconfigunique', 'customfield_checkbox');
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        }
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        return $errors;
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    }
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    /**
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     * Does this custom field type support being used as part of the block_myoverview
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     * custom field grouping?
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     * @return bool
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     */
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    public function supports_course_grouping(): bool {
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        return true;
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    }
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    /**
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     * If this field supports course grouping, then this function needs overriding to
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     * return the formatted values for this.
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     * @param array $values the used values that need formatting
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     * @return array
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     */
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    public function course_grouping_format_values($values): array {
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        $name = $this->get_formatted_name();
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        return [
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            1 => $name.': '.get_string('yes'),
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            BLOCK_MYOVERVIEW_CUSTOMFIELD_EMPTY => $name.': '.get_string('no'),
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        ];
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    }
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}