Initial work on thread safe licor

        observer.join()

# TODO: This needs to be thread safe

class CSVHandler(PatternMatchingEventHandler):

    patterns = ["*.csv"]

    main = None

class LicorThread(QThread):

    new_licor = pyqtSignal(float)

    def __init__(self, mainwindow):

    class LicorHandler(PatternMatchingEventHandler):

        patterns = ["*.txt"]

        def __init__(self, event_thread):

            super().__init__()

        self.main = mainwindow

            self.event_thread = event_thread

        def on_created(self, event):

        print("New CSV")

            # TODO: Read licor file, convert to float, send to event

            self.event_thread.new_licor.emit(event.src_path)

    def run(self):

        datadir = FileHandlerUtils.compute_current_data_dir()

        if not os.path.exists(datadir):

            # Wait for lepton-grabber to make the directory rather than failing

            # here or waiting for the data directory to be created just create

            # it ourselves

            os.mkdir(datadir)

        observer = Observer()

        # FIXME: When this ticks over to the next day it fails to update

        observer.schedule(self.LicorHandler(self), path=datadir)

        observer.start()

        observer.join()