PersianDateList.php in Persian Date for Drupal 8 8.4

Namespace

Drupal\persian_date\Element

File

src/Element/PersianDateList.php

<?php

/**
 * Created by PhpStorm.
 * User: evolve
 * Date: 10/3/17
 * Time: 8:15 PM
 */
namespace Drupal\persian_date\Element;

use Drupal\Core\Datetime\DateHelper;
use Drupal\Core\Datetime\DrupalDateTime;
use Drupal\Core\Datetime\Element\Datelist;
use Drupal\Core\Form\FormStateInterface;
use Drupal\persian_date\PersianDateHelper;
use Drupal\persian_date\Plugin\Datetime\PersianDrupalDateTime;

/**
 * Class PersianDateList
 * @FormElement("datelist")
 */
class PersianDateList extends Datelist {
  public static function valueCallback(&$element, $input, FormStateInterface $form_state) {
    $parts = $element['#date_part_order'];
    $increment = $element['#date_increment'];
    $date = NULL;
    if ($input !== FALSE) {
      $return = $input;
      if (empty(static::checkEmptyInputs($input, $parts))) {
        if (isset($input['ampm'])) {
          if ($input['ampm'] == 'pm' && $input['hour'] < 12) {
            $input['hour'] += 12;
          }
          elseif ($input['ampm'] == 'am' && $input['hour'] == 12) {
            $input['hour'] -= 12;
          }
          unset($input['ampm']);
        }
        $timezone = !empty($element['#date_timezone']) ? $element['#date_timezone'] : NULL;
        try {
          $date = DrupalDateTime::createFromArray($input, $timezone);
        } catch (\Exception $e) {
          $form_state
            ->setError($element, t('Selected combination of day and month is not valid.'));
        }
        if ($date instanceof DrupalDateTime && !$date
          ->hasErrors()) {
          static::incrementRound($date, $increment);
        }
      }
    }
    else {
      $return = array_fill_keys($parts, '');
      if (!empty($element['#default_value'])) {
        $date = $element['#default_value'];
        if ($date instanceof DrupalDateTime && !$date
          ->hasErrors()) {
          static::incrementRound($date, $increment);
          foreach ($parts as $part) {
            switch ($part) {
              case 'day':
                $format = 'j';
                break;
              case 'month':
                $format = 'n';
                break;
              case 'year':
                $format = 'Y';
                break;
              case 'hour':
                $format = in_array('ampm', $element['#date_part_order']) ? 'g' : 'G';
                break;
              case 'minute':
                $format = 'i';
                break;
              case 'second':
                $format = 's';
                break;
              case 'ampm':
                $format = 'a';
                break;
              default:
                $format = '';
            }
            $return[$part] = $date
              ->format($format);
          }
        }
      }
    }
    $timezone = isset($timezone) ?: null;
    if ($date !== null) {
      $date = PersianDrupalDateTime::createFromFormat('Y-m-d H:i:s', $date
        ->format('Y-m-d H:i:s'), $timezone);
      $date = DrupalDateTime::createFromDateTime($date
        ->getDateTime());
    }
    else {
      $date = new DrupalDateTime();
    }
    $return['object'] = $date;
    return $return;
  }
  public static function processDatelist(&$element, FormStateInterface $form_state, &$complete_form) {

    // Load translated date part labels from the appropriate calendar plugin.
    $date_helper = new PersianDateHelper();

    // The value callback has populated the #value array.
    $date = !empty($element['#value']['object']) ? $element['#value']['object'] : NULL;

    // Set a fallback timezone.
    if ($date instanceof DrupalDateTime) {
      $date = PersianDrupalDateTime::createFromDrupalDateTime($date);
      $element['#date_timezone'] = $date
        ->getTimezone()
        ->getName();
    }
    elseif (!empty($element['#timezone'])) {
      $element['#date_timezone'] = $element['#date_timezone'];
    }
    else {
      $element['#date_timezone'] = drupal_get_user_timezone();
    }
    $element['#tree'] = TRUE;

    // Determine the order of the date elements.
    $order = !empty($element['#date_part_order']) ? $element['#date_part_order'] : [
      'year',
      'month',
      'day',
    ];
    $text_parts = !empty($element['#date_text_parts']) ? $element['#date_text_parts'] : [];

    // Output multi-selector for date.
    foreach ($order as $part) {
      switch ($part) {
        case 'day':
          $options = $date_helper
            ->days($element['#required']);
          $format = 'j';
          $title = t('Day');
          break;
        case 'month':
          $options = $date_helper
            ->monthNamesAbbr($element['#required']);
          $format = 'n';
          $title = t('Month');
          break;
        case 'year':
          $range = static::datetimeRangeYears($element['#date_year_range'], $date);
          $options = $date_helper
            ->years($range[0], $range[1], $element['#required']);
          $format = 'Y';
          $title = t('Year');
          break;
        case 'hour':
          $format = in_array('ampm', $element['#date_part_order']) ? 'g' : 'G';
          $options = $date_helper
            ->hours($format, $element['#required']);
          $title = t('Hour');
          break;
        case 'minute':
          $format = 'i';
          $options = $date_helper
            ->minutes($format, $element['#required'], $element['#date_increment']);
          $title = t('Minute');
          break;
        case 'second':
          $format = 's';
          $options = $date_helper
            ->seconds($format, $element['#required'], $element['#date_increment']);
          $title = t('Second');
          break;
        case 'ampm':
          $format = 'a';
          $options = $date_helper
            ->ampm($element['#required']);
          $title = t('AM/PM');
          break;
        default:
          $format = '';
          $options = [];
          $title = '';
      }
      $default = isset($element['#value'][$part]) && trim($element['#value'][$part]) != '' ? $element['#value'][$part] : '';
      $value = $date instanceof DrupalDateTime && !$date
        ->hasErrors() ? $date
        ->format($format) : $default;
      if (!empty($value) && $part != 'ampm') {
        $value = intval($value);
      }
      $element['#attributes']['title'] = $title;
      $element[$part] = [
        '#type' => in_array($part, $text_parts) ? 'textfield' : 'select',
        '#title' => $title,
        '#title_display' => 'invisible',
        '#value' => $value,
        '#attributes' => $element['#attributes'],
        '#options' => $options,
        '#required' => $element['#required'],
        '#error_no_message' => FALSE,
        '#empty_option' => $title,
      ];
    }

    // Allows custom callbacks to alter the element.
    if (!empty($element['#date_date_callbacks'])) {
      foreach ($element['#date_date_callbacks'] as $callback) {
        if (function_exists($callback)) {
          $callback($element, $form_state, $date);
        }
      }
    }
    return $element;
  }
  protected static function datetimeRangeYears($string, $date = NULL) {
    $datetime = new PersianDrupalDateTime();
    $this_year = $datetime
      ->format('Y');
    list($min_year, $max_year) = explode(':', $string);
    $min_year -= 621;
    $max_year -= 621;

    // Valid patterns would be -5:+5, 0:+1, 2008:2010.
    $plus_pattern = '@[\\+|\\-][0-9]{1,4}@';
    $year_pattern = '@^[0-9]{4}@';
    if (!preg_match($year_pattern, $min_year, $matches)) {
      if (preg_match($plus_pattern, $min_year, $matches)) {
        $min_year = $this_year + $matches[0];
      }
      else {
        $min_year = $this_year;
      }
    }
    if (!preg_match($year_pattern, $max_year, $matches)) {
      if (preg_match($plus_pattern, $max_year, $matches)) {
        $max_year = $this_year + $matches[0];
      }
      else {
        $max_year = $this_year;
      }
    }

    // We expect the $min year to be less than the $max year. Some custom values
    // for -99:+99 might not obey that.
    if ($min_year > $max_year) {
      $temp = $max_year;
      $max_year = $min_year;
      $min_year = $temp;
    }

    // If there is a current value, stretch the range to include it.
    $value_year = $date instanceof DrupalDateTime ? $date
      ->format('Y') : '';
    if (!empty($value_year)) {
      $min_year = min($value_year, $min_year);
      $max_year = max($value_year, $max_year);
    }
    return [
      $min_year,
      $max_year,
    ];
  }

}

Classes

Name	Description
PersianDateList	Class PersianDateList