29 lines
838 B
Python
29 lines
838 B
Python
import logging
|
|
import threading
|
|
|
|
|
|
class BackgroundTask:
|
|
def __init__(self, master, task, callback=None, args=()):
|
|
self.master = master
|
|
self.args = args
|
|
self.task = task
|
|
self.callback = callback
|
|
self.thread = None
|
|
|
|
def start(self):
|
|
logging.info("starting task")
|
|
self.thread = threading.Thread(target=self.run, daemon=True)
|
|
self.thread.start()
|
|
|
|
def run(self):
|
|
result = self.task(*self.args)
|
|
logging.info("task completed")
|
|
if self.callback:
|
|
if result is None:
|
|
args = ()
|
|
elif isinstance(result, (list, tuple)):
|
|
args = result
|
|
else:
|
|
args = (result,)
|
|
logging.info("calling callback: %s", args)
|
|
self.master.after(0, self.callback, *args)
|