Give focus to another swaylock surface when output is disconnected

* Have multiple outputs
* Launch swaylock
* Unplug an output (possibly has to be the last "connected" one)
* The swaylock surface on the remaining output would not respond to key
events

This was happening because when the output destroys, focus was not given
to the other swaylock surface.

This patch makes focus be transferred to another surface owned by the
same Wayland client, but only if input was inhibited by the surface
being destroyed, and only if it's in the overlay layer. I figure it's
best to be overly specific and relax the requirements later if needed.

This patch removes a check in seat_set_focus_surface which was
preventing focus from being passed from a layer surface to any other
surface. I don't know of a use case for this check, but it's possible
that this change could produce issues.

1 files changed, 0 insertions, 3 deletions

diff --git a/sway/input/seat.c b/sway/input/seat.c
index 15c56a43..415f85ac 100644
--- a/sway/input/seat.c
+++ b/sway/input/seat.c
@@ -800,9 +800,6 @@ void seat_set_focus_workspace(struct sway_seat *seat,
 
 void seat_set_focus_surface(struct sway_seat *seat,
                 struct wlr_surface *surface, bool unfocus) {
-        if (seat->focused_layer != NULL) {
-                return;
-        }
         if (seat->has_focus && unfocus) {
                 struct sway_node *focus = seat_get_focus(seat);
                 seat_send_unfocus(focus, seat);