[orca-list] Firefox notifications, GNOME and Orca

[Nolan Darilek <nolan thewordnerd info>]

Kind of an odd question but I'm hoping for a pointer. I'm playing with 
implementing Firefox's new push notifications into a web app that needs 
to generate visible notifications on the desktop. Part of my testing 
involves clicking on these notifications to trigger behaviors, examining 
them to see if they're cleared correctly, etc.

Currently I'm poking the demo at https://serviceworke.rs/push-simple/. 
This requires Firefox 44, just released yesterday. If I give Firefox 
permission to show notifications, then click the button to send one, I 
do hear GNOME speak the notification after 5 seconds or so. I can't find 
the notification, though.

Specifically, when I ctrl-alt-tab to the topbar, then arrow to the clock 
and press down-arrow, I can read a bunch of other notifications that 
were spoken. Unfortunately, I can't find the one Firefox generated, 
meaning I won't be able to click it or verify that it disappeared as 
part of testing.

Just curious if Firefox's desktop notifications are somehow faking out 
the accessibility API (I.e. generating an event signifying that they 
appear, but not appearing in the traditional notification location, but 
instead some Firefox-specific area that can't yet be tracked.) I suppose 
there's also the possibility that they're not persistent, but in 
studying the web notifications API spec I don't see a way to make a 
notification temporary. There is a TTL parameter for pushes but this 
seems to govern how long the notification remains on the server, and 
setting it to some high value doesn't make the notification stick 
around. There's also a Firefox addon that claims to send web 
notifications to the GNOME notification area, which leads me to believe 
that Firefox notifications are currently a separate thing. 
Unfortunately, if I search for this addon via the Addon Manager then I 
can't find it while I can on the web, and as I indicated last month, the 
addon installation alert seems to be inaccessible when installing one 
from a standard website.

Thanks for any help. Just trying to get a sense for what's going on 
visually, since it doesn't map to what Orca speaks and what I'd expect 
from said speech.