<?php
// This file is part of The Bootstrap Moodle theme
//
// 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/>.

/**
 * Custom select field.
 *
 * @package    block_dash
 * @copyright  2019 bdecent gmbh <https://bdecent.de>
 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
 */

namespace block_dash\local\data_grid\filter;
/**
 * Custom select field.
 *
 * @package block_dash
 */
class choice_filter extends select_filter {
    /**
     * @var array
     */
    private $choices;

    /**
     * Constructor.
     *
     * @param string $name
     * @param string $select
     * @param array $choices
     */
    public function __construct($name, $select, array $choices) {
        $this->choices = $choices;

        parent::__construct($name, $select);
    }

    /**
     * Get the default raw value to set on form field.
     *
     * @return mixed
     */
    public function get_default_raw_value() {
        if (count($this->choices) > 1) {
            return self::ALL_OPTION;
        } else if (count($this->choices) == 1) {
            return array_keys($this->choices)[0];
        }
        return null;
    }

    /**
     * Initialize the filter. It must be initialized before values are extracted or SQL generated.
     * If overridden call parent.
     */
    public function init() {
        $this->add_all_option();
        $this->add_options($this->choices);
        parent::init();
    }
}
