How to refresh file upload?

[vojtasvoboda]

Anybody knows how to refresh file upload after the form is sent? How to remove selected file, when the form is successfully sent and persisted?

I tried:

<form ... data-request-success="$('this').request('{{ __SELF__ }}::onRefreshFiles')" ...

with:

public function onRefreshFiles()
{
    $this->pageCycle();
}

but only I can see in Chrome console is an infinite loop of requests.