EditorSelector::getEditor

public EditorSelector::getEditor($formatter_type, FieldItemListInterface $items)

public function getEditor($formatter_type, FieldItemListInterface $items) {
  // Check if the formatter defines an appropriate in-place editor. For
  // example, text formatters displaying plain text can choose to use the
  // 'plain_text' editor. If the formatter doesn't specify, fall back to the
  // 'form' editor, since that can work for any field. Formatter definitions
  // can use 'disabled' to explicitly opt out of in-place editing.
  $formatter_info = $this->formatterManager->getDefinition($formatter_type);
  $editor_id = $formatter_info['quickedit']['editor'];
  if ($editor_id === 'disabled') {
    return;
  }
  elseif ($editor_id === 'form') {
    return 'form';
  }

  // No early return, so create a list of all choices.
  $editor_choices = array($editor_id);
  if (isset($this->alternatives[$editor_id])) {
    $editor_choices = array_merge($editor_choices, $this->alternatives[$editor_id]);
  }

  // Make a choice.
  foreach ($editor_choices as $editor_id) {
    $editor = $this->editorManager->createInstance($editor_id);
    if ($editor->isCompatible($items)) {
      return $editor_id;
    }
  }

  // We still don't have a choice, so fall back to the default 'form' editor.
  return 'form';
}