public function handleReset(\Nette\Forms\Controls\SubmitButton $button)
{
$this->sort = [];
$this->filter = [];
$this->perPage = NULL;
if ($session = $this->getRememberSession()) {
$session->remove();
}
$button->form->setValues([Filter::ID => $this->defaultFilter], TRUE);
$this->page = 1;
$this->reload();
}