[RFC PATCH wayland-protocols] presentation: New protocol for presenting surfaces to the user

[David Edmundson]

Thanks for working on this, activation is something key that we are
sorely missing.

If we want a complete 1:1 port of the X11 protocol, this certainly
technically fine, other than my one minor comment.

I dislike the X11 spec, so it's not my preference moving forward.
The main thing I dislike is that it requires the surface releasing
focus to know what it will be launching.

Especially with flatpal + xdg portal we're increasingly going to be to
want to pass focus without knowing to whom.
Similarly, dbus activation on a common name such as filemanager1 could
be to any app.

The other thing I've had a problem with is that historically we have a
lot of problems with apps not clearing their startup notifications.
This was especially true of apps that immediately dock to the status
icon, something this spec would have a problem with, unless we allow
nulls to the acknowledge request.

IMHO we can get something cleaner if we treat it as two independent problems.
* Passing focus
* Startup notifications

One is conceptually passing data from surface-> surface
The other is passing data app -> the shell

There's some overlap, but not a lot.

Personally I would also like to see set_activation_token(string, seat,
serial) and activate(string) be methods on xdg_toplevel, partly
because they're so integral to everyday operation, partly because it's
the only surface type we want to activate.


David