public FormState::isSubmitted() Determines

public FormState::getError(array $element) Returns

public &FormState::getTriggeringElement() Gets

public FormState::addBuildInfo($property, $value) Adds

public FormState::setValidationComplete($validation_complete = TRUE)

public FormState::setRedirect($route_name, array $route_parameters = array(), array

public FormState::isProgrammed() Returns

public FormState::getButtons() Returns the

public FormState::setHasFileElement($has_file_element = TRUE)

An associative array of information stored by Form API that is necessary to build and rebuild the form from cache when the original context may no longer be available: