It seems status icons, at least some, don't send property change
notifications. So we can't rely on that, and have to disable caching.
And handle the `NewIcon` signal defined in
https://www.freedesktop.org/wiki/Specifications/StatusNotifierItem/StatusNotifierItem
I'm not sure whether or not there's a *good* reason it works this way,
but regardless I see `nm-applet` and `ibus` update their icons as
they should after these changes.
Comments in `gnome-shell-extension-appindicator` indicate this is
necessary for some clients. Checking the return value doesn't seem to
be.
There are more comments about Dropbox; more may be needed to fix it,
which doesn't seem to behave very properly.
This is at least one of the issue behind
https://github.com/pop-os/cosmic-applets/issues/165. OBS now shows it's
icon instead of an empty space. But the Mattermost flatpak doesn't show
anything. (Is that Flatpak related, or does it not use
`StatusNotifierItem`?)
Requires https://github.com/pop-os/libcosmic/pull/368. Ideally, it
should have some way to choose from multiple icons in memory of
different sizes.
This is based on the GTK version of the status area applet that was
previously in this repository.
This exposes app indicators found over dbus. As used in applications
like nm-applet and steam.
