persian_date.module in Persian Date for Drupal 8 8.4

Contains persian_date.module.

File

persian_date.module

<?php

/**
 * @file
 * Contains persian_date.module.
 */
use Drupal\Core\Routing\RouteMatchInterface;
use Drupal\persian_date\PersianLanguageDiscovery;
use Drupal\views\Plugin\views\display\Page;
use Drupal\views\Plugin\views\filter\Date;

/**
 * @param int $year
 *
 * @return bool
 */
function is_georgian_year($year) {
  return $year > 1800;
}

/**
 * Implements hook_help().
 */
function persian_date_help($route_name, RouteMatchInterface $route_match) {
  switch ($route_name) {

    // Main module help for the persian_date module.
    case 'help.page.persian_date':
      $twig = \Drupal::getContainer()
        ->get('twig');
      $output = $twig
        ->renderInline(file_get_contents(__DIR__ . '/resources/templates/help.html.twig'));
      return $output;
    default:
  }
}

/**
 * Replace form elements with persian ones
 *
 * Implements hook_element_info_alter().
 */
function persian_date_element_info_alter(array &$info) {
  if (!PersianLanguageDiscovery::isPersian()) {
    return;
  }
  $elements = array_intersect_key($info, array_flip([
    'date',
    'datetime',
    'datelist',
  ]));
  foreach ($elements as $name => &$config) {
    if (isset($config['#process'])) {
      foreach ($config['#process'] as &$process) {
        if (is_array($process)) {
          $process[0] = replace_with_equivalent_module_class($process[0]);
        }
      }
    }
    if (isset($config['#pre_render'])) {
      foreach ($config['#pre_render'] as &$process) {
        if (is_array($process)) {
          $process[0] = replace_with_equivalent_module_class($process[0]);
        }
      }
    }
    if (isset($config['#element_validate'])) {
      foreach ($config['#element_validate'] as &$process) {
        if (is_array($process)) {
          $process[0] = replace_with_equivalent_module_class($process[0]);
        }
      }
    }
    if (isset($config['#value_callback'])) {
      if (is_array($config['#value_callback'])) {
        $config['#value_callback'][0] = replace_with_equivalent_module_class($config['#value_callback'][0]);
      }
    }
  }
  $info = array_merge($info, $elements);
}

// helper method to replace classes
function replace_with_equivalent_module_class($string) {
  $replacements = [
    \Drupal\Core\Datetime\Element\Datelist::class => \Drupal\persian_date\Element\PersianDateList::class,
    \Drupal\Core\Render\Element\Date::class => \Drupal\persian_date\Element\PersianDate::class,
    \Drupal\Core\Datetime\Element\Datetime::class => \Drupal\persian_date\Element\PersianDateTime::class,
  ];
  foreach ($replacements as $search => $replacement) {
    $string = str_replace($search, $replacement, $string);
  }
  return $string;
}

/**
 * Replace date widgets with persian widgets
 *
 * Implements hook_field_widget_info_alter().
 */
function persian_date_field_widget_info_alter(array &$info) {
  if (!PersianLanguageDiscovery::isPersian()) {
    return;
  }

  // Let a new field type re-use an existing widget.
  $info['datetime_default']['class'] = \Drupal\persian_date\Plugin\Field\FieldWidget\PersianDateTimeDefaultWidget::class;
  $info['datetime_datelist']['class'] = \Drupal\persian_date\Plugin\Field\FieldWidget\PersianDateTimeDatelistWidget::class;
  $info['datetime_timestamp']['class'] = \Drupal\persian_date\Plugin\Field\FieldWidget\PersianTimestampDateTimeDefaultWidget::class;
  $info['datetime_timestamp']['provider'] = 'persian_date';

  // integration with "scheduler" module
  if (\Drupal::moduleHandler()
    ->moduleExists('scheduler') && isset($info['datetime_timestamp_no_default']) && is_array($info['datetime_timestamp_no_default'])) {
    $info['datetime_timestamp_no_default']['class'] = \Drupal\persian_date\Plugin\Field\FieldWidget\TimestampDatetimeNoDefaultWidget::class;
  }
}

/******************************************************
 *                                                    *
 * Integration with "Better Exposed Filters" module   *
 *                                                    *
 ******************************************************/
function persian_date_better_exposed_filters_display_options_alter(&$display_options, $filter) {
  if (!PersianLanguageDiscovery::isPersian()) {
    return;
  }
  if (in_array('bef_datepicker', array_keys($display_options))) {
    $display_options['persian_datepicker'] = t('Persian jQuery UI Datepicker');
  }
}
$persian_date_widgets = [];
function persian_date_better_exposed_filters_settings_alter(&$settings, $view, $page) {
  if (!PersianLanguageDiscovery::isPersian()) {
    return;
  }
  foreach ($view->filter as $name => $filter) {
    if ($filter instanceof Date && $settings[$name]['bef_format'] === 'persian_datepicker') {
      global $persian_date_widgets;
      $persian_date_widgets = is_array($persian_date_widgets) ? $persian_date_widgets : [];
      $persian_date_widgets[] = $name;
    }
  }
}

/**
 * Implements hook_form_alter().
 */
function persian_date_form_alter(&$form, $form_state, $form_id) {
  if (!PersianLanguageDiscovery::isPersian()) {
    return;
  }

  // integration with better_exposed_filters
  global $persian_date_widgets;
  if (isset($persian_date_widgets)) {
    if (isset($form['#attached']) && isset($form['#attached']['library']) && is_array($form['#attached']['library']) && in_array('better_exposed_filters/general', $form['#attached']['library'])) {
      foreach ($persian_date_widgets as $field_id) {
        $form[$field_id]['#attributes']['type'] = 'date';
        $form[$field_id]['#attributes']['class'][] = 'persian-datepicker';
        $form[$field_id]['value']['#attributes']['type'] = 'date';
        $form[$field_id]['value']['#attributes']['class'][] = 'persian-datepicker';
        $form[$field_id]['min']['#attributes']['class'][] = 'persian-datepicker';
        $form[$field_id]['max']['#attributes']['class'][] = 'persian-datepicker';
      }
      $form['#attached']['library'][] = 'persian_date/core';
    }
  }
}
function persian_date_views_plugins_filter_alter(array &$plugins) {
  if (!PersianLanguageDiscovery::isPersian()) {
    return;
  }

  // Change the 'title' handler class.
  $plugins['date']['class'] = \Drupal\persian_date\Plugin\views\filter\Date::class;
}

// replace translation handlers
function persian_date_entity_type_alter(array &$entity_types) {
  if (!\Drupal::moduleHandler()
    ->moduleExists('content_translation')) {
    return;
  }

  // Provide defaults for translation info.

  /** @var $entity_types \Drupal\Core\Entity\EntityTypeInterface[] */
  foreach ($entity_types as $entity_type) {
    if ($entity_type
      ->isTranslatable()) {
      if (!$entity_type
        ->hasHandlerClass('translation')) {
        $entity_type
          ->setHandlerClass('translation', \Drupal\persian_date\TranslationHandler\ContentTranslationHandler::class);
      }
      else {

        // if has translation handler replace it with correct equivalent
        $handlerClass = $entity_type
          ->getHandlerClass('translation');
        switch ($handlerClass) {
          case \Drupal\block_content\BlockContentTranslationHandler::class:
            $entity_type
              ->setHandlerClass('translation', \Drupal\persian_date\TranslationHandler\BlockContentTranslationHandler::class);
            break;
          case \Drupal\comment\CommentTranslationHandler::class:
            $entity_type
              ->setHandlerClass('translation', \Drupal\persian_date\TranslationHandler\CommentTranslationHandler::class);
            break;
          case \Drupal\content_translation\ContentTranslationHandler::class:
            $entity_type
              ->setHandlerClass('translation', \Drupal\persian_date\TranslationHandler\ContentTranslationHandler::class);
            break;
          case \Drupal\node\NodeTranslationHandler::class:
            $entity_type
              ->setHandlerClass('translation', \Drupal\persian_date\TranslationHandler\NodeTranslationHandler::class);
            break;
          case \Drupal\user\ProfileTranslationHandler::class:
            $entity_type
              ->setHandlerClass('translation', \Drupal\persian_date\TranslationHandler\ProfileTranslationHandler::class);
            break;
          case \Drupal\taxonomy\TermTranslationHandler::class:
            $entity_type
              ->setHandlerClass('translation', \Drupal\persian_date\TranslationHandler\TermTranslationHandler::class);
            break;
        }
      }
    }
  }
}

Functions

Name	Description
is_georgian_year
persian_date_better_exposed_filters_display_options_alter
persian_date_better_exposed_filters_settings_alter
persian_date_element_info_alter	Replace form elements with persian ones
persian_date_entity_type_alter
persian_date_field_widget_info_alter	Replace date widgets with persian widgets
persian_date_form_alter	Implements hook_form_alter().
persian_date_help	Implements hook_help().
persian_date_views_plugins_filter_alter
replace_with_equivalent_module_class