<?php

///////////////////////////////////////////////////////////////////////////
//                                                                       //
// NOTICE OF COPYRIGHT                                                   //
//                                                                       //
// Moodle - Modular Object-Oriented Dynamic Learning Environment         //
//          http://moodle.org                                            //
//                                                                       //
// Copyright (C) 1999 onwards Martin Dougiamas  http://dougiamas.com     //
//                                                                       //
// This program 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 2 of the License, or     //
// (at your option) any later version.                                   //
//                                                                       //
// This program 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:                          //
//                                                                       //
//          http://www.gnu.org/copyleft/gpl.html                         //
//                                                                       //
///////////////////////////////////////////////////////////////////////////

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

/**
 * Class for a group of elements used to input a date.
 *
 * Emulates moodle print_date_selector function
 *
 * @package formslib
 */
class MoodleQuickForm_date_selector extends MoodleQuickForm_group
{
    /**
    * Control the fieldnames for form elements
    *
    * startyear => integer start of range of years that can be selected
    * stopyear => integer last year that can be selected
    * timezone => float/string timezone
    * applydst => apply users daylight savings adjustment?
    * optional => if true, show a checkbox beside the date to turn it on (or off)
    */
    protected $_options = array('startyear' => 1970, 'stopyear' => 2020,
            'timezone' => 99, 'applydst' => true, 'optional' => false);

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

   /**
    * Class constructor
    *
    * @access   public
    * @param    string  Element's name
    * @param    mixed   Label(s) for an element
    * @param    array   Options to control the element's display
    * @param    mixed   Either a typical HTML attribute string or an associative array
    */
    function MoodleQuickForm_date_selector($elementName = null, $elementLabel = null, $options = array(), $attributes = null)
    {
        $this->HTML_QuickForm_element($elementName, $elementLabel, $attributes);
        $this->_persistantFreeze = true;
        $this->_appendName = true;
        $this->_type = 'date_selector';
        // set the options, do not bother setting bogus ones
        if (is_array($options)) {
            foreach ($options as $name => $value) {
                if (isset($this->_options[$name])) {
                    if (is_array($value) && is_array($this->_options[$name])) {
                        $this->_options[$name] = @array_merge($this->_options[$name], $value);
                    } else {
                        $this->_options[$name] = $value;
                    }
                }
            }
        }
        form_init_date_js();
    }

    // }}}
    // {{{ _createElements()

    function _createElements()
    {
        $this->_elements = array();
        for ($i=1; $i<=31; $i++) {
            $days[$i] = $i;
        }
        for ($i=1; $i<=12; $i++) {
            $months[$i] = userdate(gmmktime(12,0,0,$i,15,2000), "%B");
        }
        for ($i=$this->_options['startyear']; $i<=$this->_options['stopyear']; $i++) {
            $years[$i] = $i;
        }
// (Shirai128): QuickFormを用いている箇所での年月日の並び順を選択した言語によって自動的に並べ直す改良（喜多先生版） (2009/04/08)
// (Shirai128): ここからコメントアウト
//      $this->_elements[] =& MoodleQuickForm::createElement('select', 'day', get_string('day', 'form'), $days, $this->getAttributes(), true);
//      $this->_elements[] =& MoodleQuickForm::createElement('select', 'month', get_string('month', 'form'), $months, $this->getAttributes(), true);
//      $this->_elements[] =& MoodleQuickForm::createElement('select', 'year', get_string('year', 'form'), $years, $this->getAttributes(), true);
// (Shirai128): ここから追加
        preg_match_all('/%[dBmY]/', get_string("strftimedate"), $dmatches ); //t-kita 20090407
        $dmatches0 = $dmatches[0];
        if (count($dmatches0)!=3){ $dmatches0 = array('%d','%B','%Y'); }
        foreach ($dmatches0 as $dpiece){
            if ($dpiece=='%d'){
                $this->_elements[] =& MoodleQuickForm::createElement('select', 'day', get_string('day', 'form'), $days, $this->getAttributes(), true);
            }elseif (($dpiece=='%B') || ($dpiece=='%m')){
                $this->_elements[] =& MoodleQuickForm::createElement('select', 'month', get_string('month', 'form'), $months, $this->getAttributes(), true);
            }elseif ($dpiece=='%Y'){
                $this->_elements[] =& MoodleQuickForm::createElement('select', 'year', get_string('year', 'form'), $years, $this->getAttributes(), true);
            }
        }
// (Shirai128): ここまで追加
        // If optional we add a checkbox which the user can use to turn if on
        if($this->_options['optional']) {
            $this->_elements[] =& MoodleQuickForm::createElement('checkbox', 'enabled', null, get_string('enable'), $this->getAttributes(), true);
        }
        foreach ($this->_elements as $element){
            if (method_exists($element, 'setHiddenLabel')){
                $element->setHiddenLabel(true);
            }
        }

    }

    // }}}
    // {{{ onQuickFormEvent()

    /**
     * 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    $caller calling object
     * @since     1.0
     * @access    public
     * @return    void
     */
    function onQuickFormEvent($event, $arg, &$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);
                    }
                }
                $requestvalue=$value;
                if ($value == 0) {
                    $value = time();
                }
                if (!is_array($value)) {
                    $currentdate = usergetdate($value);
                    $value = array(
                        'day' => $currentdate['mday'],
                        'month' => $currentdate['mon'],
                        'year' => $currentdate['year']);
                    // If optional, default to off, unless a date was provided
                     if($this->_options['optional']) {
                        $value['enabled'] = $requestvalue != 0;
                    }
                } else {
                    $value['enabled'] = isset($value['enabled']);
                }
                if (null !== $value){
                    $this->setValue($value);
                }
                break;
            case 'createElement':
                // Optional is an optional param, if its set we need to add a disabledIf rule.
                // If its empty or not specified then its not an optional dateselector.
                if (!empty($arg[2]['optional']) && !empty($arg[0])) {
                    $caller->disabledIf($arg[0], $arg[0].'[enabled]');
                }
                return parent::onQuickFormEvent($event, $arg, $caller);
                break;
            default:
                return parent::onQuickFormEvent($event, $arg, $caller);
        }
    } // end func onQuickFormEvent

    // {{{ toHtml()

    function toHtml()
    {
        include_once('HTML/QuickForm/Renderer/Default.php');
        $renderer = new HTML_QuickForm_Renderer_Default();
        $renderer->setElementTemplate('{element}');
        parent::accept($renderer);
        return $this->_wrap[0] . $renderer->toHtml() . $this->_wrap[1];
    }

    // }}}
    // {{{ accept()

    function accept(&$renderer, $required = false, $error = null)
    {
        $renderer->renderElement($this, $required, $error);
    }

    // }}}

    /**
     * Output a timestamp. Give it the name of the group.
     *
     * @param array $submitValues
     * @param bool $assoc
     * @return array
     */
    function exportValue(&$submitValues, $assoc = false)
    {
        $value = null;
        $valuearray = array();
        foreach ($this->_elements as $element){
            $thisexport = $element->exportValue($submitValues[$this->getName()], true);
            if ($thisexport!=null){
                $valuearray += $thisexport;
            }
        }
        if (count($valuearray)){
            if($this->_options['optional']) {
                // If checkbox is on, the value is zero, so go no further
                if(empty($valuearray['enabled'])) {
                    $value[$this->getName()] = 0;
                    return $value;
                }
            }

            $value[$this->getName()] = make_timestamp($valuearray['year'],
                                   $valuearray['month'],
                                   $valuearray['day'],
                                   0, 0, 0,
                                   $this->_options['timezone'],
                                   $this->_options['applydst']);

            return $value;
        } else {
            return null;
        }
    }

    // }}}
}
