Apply the text filter filter to the given list of strings.

        :param list strings: the list of input strings

def apply_filter(self, strings):
        """
        Apply the text filter filter to the given list of strings.

        :param list strings: the list of input strings
        """
        result = strings
        for filt in self.filters:
            result = filt.apply_filter(result)
        self.log([u"Applying regex: '%s' => '%s'", strings, result])
        return result