Next that shows progress in statusbar for each <freq> cells

def next(self):

        """Next that shows progress in statusbar for each <freq> cells"""

        self.progress_status()

        # Check abortes state and raise StopIteration if aborted
        if self.aborted:
            statustext = _("File loading aborted.")
            post_command_event(self.main_window, self.main_window.StatusBarMsg,
                               text=statustext)
            raise StopIteration

        return self.parent_cls.next(self)