Default theme implementation to display a file form widget. Available variables: element:

Defines the database file usage backend. This is the default Drupal backend. Hierarchy class

public static ManagedFile::valueCallback(&$element, $input,

public File::preSave(EntityStorageInterface $storage)

public FileSystemInterface::dirname($uri)

file_validate_name_length(FileInterface $file) Checks for files with names longer than can be stored in the

public FileSystemInterface::realpath($uri)

Provides an AJAX/progress aware widget for uploading and saving a file. Plugin annotation

public FileSystemInterface::rmdir($uri, $context = NULL)

protected FileAccessControlHandler::checkAccess(EntityInterface