Minor refactor of input manager

The input manager is a singleton object. Passing the sway_input_manager
argument to each of its functions is unnecessary, while removing the
argument makes it obvious to the caller that it's a singleton. This
patch removes the argument and makes the input manager use server.input
instead.

On a similar note:

* sway_input_manager.server is removed in favour of using the server
global.
* seat.input is removed because it can get it from server.input.

Due to a circular dependency, creating seat0 is now done directly in
server_init rather than in input_manager_create. This is because
creating seats must be done after server.input is set.

Lastly, it now stores the default seat name using a constant and removes
a second reference to seat0 (in input_manager_get_default_seat).

1 files changed, 4 insertions, 7 deletions

diff --git a/sway/input/seat.c b/sway/input/seat.c
index d7733855..330b7bbe 100644
--- a/sway/input/seat.c
+++ b/sway/input/seat.c
@@ -95,8 +95,7 @@ static void seat_send_focus(struct sway_node *node, struct sway_seat *seat) {
         if (view && seat_is_input_allowed(seat, view->surface)) {
 #ifdef HAVE_XWAYLAND
                 if (view->type == SWAY_VIEW_XWAYLAND) {
-                        struct wlr_xwayland *xwayland =
-                                seat->input->server->xwayland.wlr_xwayland;
+                        struct wlr_xwayland *xwayland = server.xwayland.wlr_xwayland;
                         wlr_xwayland_set_seat(xwayland, seat->wlr_seat);
                 }
 #endif
@@ -328,14 +327,13 @@ static void collect_focus_container_iter(struct sway_container *container,
         collect_focus_iter(&container->node, data);
 }
 
-struct sway_seat *seat_create(struct sway_input_manager *input,
-                const char *seat_name) {
+struct sway_seat *seat_create(const char *seat_name) {
         struct sway_seat *seat = calloc(1, sizeof(struct sway_seat));
         if (!seat) {
                 return NULL;
         }
 
-        seat->wlr_seat = wlr_seat_create(input->server->wl_display, seat_name);
+        seat->wlr_seat = wlr_seat_create(server.wl_display, seat_name);
         if (!sway_assert(seat->wlr_seat, "could not allocate seat")) {
                 free(seat);
                 return NULL;
@@ -361,10 +359,9 @@ struct sway_seat *seat_create(struct sway_input_manager *input,
         wl_signal_add(&seat->wlr_seat->events.new_drag_icon, &seat->new_drag_icon);
         seat->new_drag_icon.notify = handle_new_drag_icon;
 
-        seat->input = input;
         wl_list_init(&seat->devices);
 
-        wl_list_insert(&input->seats, &seat->link);
+        wl_list_insert(&server.input->seats, &seat->link);
 
         return seat;
 }