WorkgroupForm::processRequest

protected function processRequest(array &$result = []): void
{
	$request = BitrixMainContext::getCurrent()->getRequest();

	$result['IS_IFRAME'] = ($request->get('IFRAME') === 'Y' || $this->arParams['IFRAME'] === 'Y');
	$result['IS_POPUP'] = ($request->get('POPUP') === 'Y');

	if (in_array($request->get('CALLBACK'), [ 'REFRESH', 'GROUP' ]))
	{
		$result['CALLBACK'] = $request->get('CALLBACK');
	}

	if (!empty($request->getPost('TAB')))
	{
		$result['TAB'] = $request->getPost('TAB');
	}
	elseif (!empty($request->get('tab')))
	{
		$result['TAB'] = $request->get('tab');
	}
}