<?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/>.


/**
 * Yes/No drop down type form element
 *
 * Contains HTML class for a simple yes/ no drop down element
 *
 * @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";

/**
 * Yes/No drop down type form element
 *
 * HTML class for a simple yes/ no drop down element
 *
 * @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_selectyesno extends MoodleQuickForm_select{
    /**
     * 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 mixed $options ignored, not used.
     */
    public function __construct($elementName=null, $elementLabel=null, $attributes=null, $options=null) {
        // TODO MDL-52313 Replace with the call to parent::__construct().
        HTML_QuickForm_element::__construct($elementName, $elementLabel, $attributes, null);
        $this->_type = 'selectyesno';
        $this->_persistantFreeze = true;
    }

    /**
     * Old syntax of class constructor for backward compatibility.
     */
    public function MoodleQuickForm_selectyesno($elementName=null, $elementLabel=null, $attributes=null, $options=null) {
        self::__construct($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 $caller calling object
     * @return mixed
     */
    function onQuickFormEvent($event, $arg, &$caller)
    {
        switch ($event) {
            case 'createElement':
                $choices=array();
                $choices[0] = get_string('no');
                $choices[1] = get_string('yes');
                $this->load($choices);
                break;
        }
        return parent::onQuickFormEvent($event, $arg, $caller);
    }

}