public FormState::getError(array $element) Returns

public &FormState::getTriggeringElement() Gets

protected FormErrorHandler::setElementErrorsFromFormState(array &$elements

public FormStateDecoratorBase::prepareCallback($callback)

Provides an interface for a Form that has a base form ID. This will become the $form_state->getBaseInfo()['base_form_id'] used to generate

public FormBuilder::renderPlaceholderFormAction()

public FormStateDecoratorBase::getCleanValueKeys()

protected FormBase::currentUser() Gets the

public FormStateInterface::setSubmitHandlers(array $submit_handlers)

Decorates another form state. Hierarchy class \Drupal\Core\Form\