function SystemMenuBlock::blockValidate

Overrides BlockPluginTrait::blockValidate

File

core/modules/system/src/Plugin/Block/SystemMenuBlock.php, line 156

Class

SystemMenuBlock

Provides a generic Menu block.

Namespace

Code

public function blockValidate($form, FormStateInterface $form_state) : void {
  $values = $form_state->getValues();
  if (!empty($values['add_active_trail_class'])) {
    return;
  }
  if ((int) $values['level'] !== 1 || empty($values['expand_all_items']) && (int) $values['depth'] !== 1) {
    $form_state->setError($form['menu_levels']['add_active_trail_class'], $this->t('"Add a CSS class to ancestors of the current page" is required if the menu if the initial is 1, or if menu items are not all expanded and the number of levels display is more than 1.'));
  }
}