watch for piped data from save dialog

def pipeRecvGraph(self):
        '''watch for piped data from save dialog'''
        try:
            while True:
                graph_rec = self.parent_pipe_recv_graph.recv()
                if graph_rec is not None:
                    mestate.input_queue.put(graph_rec)
                time.sleep(0.1)
        except EOFError:
            pass