How to display a dialog in Python that does not block code execution?
I am attempting to create a dialog in python that is display for a long running process to let the user have feedback. In my case I don’t know how long the process will run. So I am thinking start in a seperate thread and then stop the thread with the process is done.
I am testing this in a python marco by simulating some time passing. I can’t get the dialog to display when the thread starts. It pops up for a split second after the time has elapsed time.sleep(10).
How do I get show a dialog window that does not block python and acutally displays.
from __future__ import annotations
import time
from lo_pip.dialog.infinite_progress import InfiniteProgress
def show_some_progress(*args) -> None:
# InfiniteProgress is a threading.Thread class.
my_progress = InfiniteProgress(XSCRIPTCONTEXT.getComponentContext())
my_progress.start()
time.sleep(10)
my_progress.stop()
g_exportedScripts = (show_some_progress,)
This is the thread class that starts the dialog.
import threading
class InfiniteProgress(threading.Thread):
"""
Infinite progress thread.
"""
def __init__(self, ctx: Any, title: str = "Infinite Progress", msg: str = "Please wait"):
super().__init__()
self._ctx = ctx
self._title = title
self._msg = msg
self._ellipsis = 0
self._stop_event = threading.Event()
def run(self):
in_progress = InfiniteProgressDialog(self._ctx, self._title)
while not self._stop_event.is_set():
# possibly sleep and update a label to show progress
self._ellipsis += 1
in_progress.dialog.setVisible(True)
in_progress.update(f"{self._msg}{'.' * self._ellipsis}")
if self._ellipsis > 10:
self._ellipsis = 1
time.sleep(1)
in_progress.dialog.dispose()
def stop(self):
self._stop_event.set()
See my infinite_progress.py code for more details on the entire code.