How to know when user has denied location with get_geolocation()?

[emigre459]

I'm trying to disable a button I've created for grabbing the user location when the user denies location services in their browser dialog after a call to get_geolocation(). How do I detect that that denial has occurred so I can disable the button going forward? I've tried using the below code but it always returns None for both the session state variable and the returned value from streamlit_js_eval (I've also tried making it a raw string in python to avoid concerns with things like the {} brackets but no luck). This throws no errors:

allowed = st_js(js_expressions="navigator.permissions.query({name:'geolocation'})", key="geolocation_permission")
st.write(f"Geolocation permitted: {allowed} and {ss.geolocation_permission}")

[aghasemi]

Hi. Have you tried checking if the result of get_geolocation is None?

[emigre459]

So far as I can tell, that function executes asynchronously. So right now I have to wait some timeout period, checking if the value has changed from None to something else, even if the user has permitted location services. Unfortunately this means that I can't tell if a value of None means "user will not permit" or "timeout reached" (I use 10 seconds and that is sometimes not enough even when permission is granted - why does it seem so slow btw?)