public static function Country::processCountry in Address 8

Processes the address_country form element.

Parameters

array $element: The form element to process.

\Drupal\Core\Form\FormStateInterface $form_state: The current state of the form.

array $complete_form: The complete form structure.

Return value

array The processed element.

Throws

\InvalidArgumentException Thrown when #available_countries is malformed.

File

src/Element/Country.php, line 60

Class

Country

Provides a country form element.

Namespace

Drupal\address\Element

Code

public static function processCountry(array &$element, FormStateInterface $form_state, array &$complete_form) {
  if (isset($element['#available_countries']) && !is_array($element['#available_countries'])) {
    throw new \InvalidArgumentException('The #available_countries property must be an array.');
  }
  $full_country_list = \Drupal::service('address.country_repository')
    ->getList();
  $country_list = $full_country_list;
  if (!empty($element['#available_countries'])) {
    $available_countries = $element['#available_countries'];
    if (!empty($element['#default_value'])) {

      // The current country should always be available.
      $available_countries[] = $element['#default_value'];
    }
    $available_countries = array_combine($available_countries, $available_countries);
    $country_list = array_intersect_key($country_list, $available_countries);
  }
  if (empty($element['#default_value']) && $element['#required']) {

    // Fallback to the first country in the list if the default country
    // is empty even though the field is required.
    $element['#default_value'] = key($country_list);
  }
  $element['#tree'] = TRUE;

  // Hide the dropdown when there is only one possible value.
  if (count($country_list) == 1 && $element['#required']) {
    $element['country_code'] = [
      '#type' => 'hidden',
      '#value' => key($available_countries),
    ];
  }
  else {
    $element['country_code'] = [
      '#type' => 'select',
      '#title' => $element['#title'],
      '#title_display' => $element['#title_display'],
      '#description_display' => $element['#description_display'],
      '#options' => $country_list,
      '#default_value' => $element['#default_value'],
      '#required' => $element['#required'],
      '#limit_validation_errors' => [],
      '#attributes' => [
        'class' => [
          'country',
        ],
        'autocomplete' => 'country',
      ],
      '#weight' => -100,
    ];
    if (!$element['#required']) {
      $element['country_code']['#empty_value'] = '';
    }
    if (!empty($element['#ajax'])) {
      $element['country_code']['#ajax'] = $element['#ajax'];
      unset($element['#ajax']);
    }
    if (!empty($element['#description'])) {
      $element['country_code']['#description'] = $element['#description'];
      unset($element['#description']);
    }
  }

  // Remove the 'country_code' level from form state values.
  $element['country_code']['#parents'] = $element['#parents'];
  return $element;
}