Stop current search thread and clean-up

def stop_and_reset_thread(self, ignore_results=False):
        """Stop current search thread and clean-up"""
        if self.search_thread is not None:
            if self.search_thread.isRunning():
                if ignore_results:
                    self.search_thread.sig_finished.disconnect(
                        self.search_complete)
                self.search_thread.stop()
                self.search_thread.wait()
            self.search_thread.setParent(None)
            self.search_thread = None