public function FileWidget::formElement

Implements \Drupal\field\Plugin\Type\Widget\WidgetInterface::formElement().

Overrides WidgetInterface::formElement

File

drupal/core/modules/file/lib/Drupal/file/Plugin/field/widget/FileWidget.php, line 168

Contains \Drupal\file\Plugin\field\widget\FileWidget.

Class

FileWidget

Plugin implementation of the 'file_generic' widget.

Namespace

Code

public function formElement(array $items, $delta, array $element, $langcode, array &$form, array &$form_state) {
  $defaults = array(
    'fids' => array(),
    'display' => !empty($this->field['settings']['display_default']),
    'description' => '',
  );

  // Essentially we use the managed_file type, extended with some
  // enhancements.
  $element_info = element_info('managed_file');
  $element += array(
    '#type' => 'managed_file',
    '#upload_location' => file_field_widget_uri($this->field, $this->instance),
    '#upload_validators' => file_field_widget_upload_validators($this->field, $this->instance),
    '#value_callback' => 'file_field_widget_value',
    '#process' => array_merge($element_info['#process'], array(
      'file_field_widget_process',
    )),
    '#progress_indicator' => $this
      ->getSetting('progress_indicator'),
    // Allows this field to return an array instead of a single value.
    '#extended' => TRUE,
  );
  $element['#weight'] = $delta;

  // Field stores FID value in a single mode, so we need to transform it for
  // form element to recognize it correctly.
  if (!isset($items[$delta]['fids']) && isset($items[$delta]['fid'])) {
    $items[$delta]['fids'][0] = $items[$delta]['fid'];
  }
  $element['#default_value'] = !empty($items[$delta]) ? $items[$delta] : $defaults;
  $default_fids = $element['#extended'] ? $element['#default_value']['fids'] : $element['#default_value'];
  if (empty($default_fids)) {
    $cardinality = isset($this->field['cardinality']) ? $this->field['cardinality'] : 1;
    $element['#description'] = theme('file_upload_help', array(
      'description' => $element['#description'],
      'upload_validators' => $element['#upload_validators'],
      'cardinality' => $cardinality,
    ));
    $element['#multiple'] = $cardinality != 1 ? TRUE : FALSE;
    if ($cardinality != 1 && $cardinality != -1) {
      $element['#element_validate'] = array(
        'file_field_widget_multiple_count_validate',
      );
    }
  }
  return $element;
}