class ThreadedClient:
"""
Launch the main part of the GUI and the worker thread.
"""
def __init__(self, master, read_data):
"""
Start the GUI and the asynchronous threads.
"""
self.master = master
# Create the queue
self.queue = Queue.Queue()
# Set up the GUI part
self.gui = GUI(master, self.queue)
# Set up data read
self._data = read_data
# Set up the thread to do asynchronous I/O
self.running = 1
self.thread = threading.Thread(target=self.worker_thread)
self.thread.start()
# Start the periodic call in the GUI to check queue
self.periodic_call()
def periodic_call(self):
"""
Check every 100 ms if there is something new in the queue.
"""
self.gui.process_incoming()
if not self.running:
# Hard stop of application if running is not set
import sys
sys.exit(1)
self.master.after(100, self.periodic_call)
def worker_thread(self):
"""
Handle the asynchronous I/O.
"""
while self.running:
time.sleep(5)
msg = "Poll"
_data = self._data._read_current_weather()
self._data.create_data_chunks(_data)
self.gui.set_weather_data(self._data.location,
self._data.current,
self._data.condition)
self.gui.update_labels()
self.master.update_idletasks()
self.queue.put(msg)
