DataProvider::getData

public function getData()
{
	if (is_callable($this->data))
	{
		$getDataFunc = $this->data;
		$data = $getDataFunc();
	}
	else
	{
		$data = $this->data;
	}

	$result = array();
	foreach ($data as $key => $value)
	{
		if (!$value)
		{
			continue;
		}

		$result[$key] = $value;
	}

	return $result;
}