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, 4 deletions

diff --git a/sway/desktop/layer_shell.c b/sway/desktop/layer_shell.c
index 269864d4..cabb07f5 100644
--- a/sway/desktop/layer_shell.c
+++ b/sway/desktop/layer_shell.c
@@ -211,7 +211,7 @@ void arrange_layers(struct sway_output *output) {
         }
 
         struct sway_seat *seat;
-        wl_list_for_each(seat, &input_manager->seats, link) {
+        wl_list_for_each(seat, &server.input->seats, link) {
                 seat_set_focus_layer(seat, topmost ? topmost->layer_surface : NULL);
         }
 }
@@ -241,7 +241,7 @@ static void handle_output_destroy(struct wl_listener *listener, void *data) {
                 wl_container_of(listener, sway_layer, output_destroy);
         // Determine if this layer is being used by an exclusive client. If it is,
         // try and find another layer owned by this client to pass focus to.
-        struct sway_seat *seat = input_manager_get_default_seat(input_manager);
+        struct sway_seat *seat = input_manager_get_default_seat();
         struct wl_client *client =
                 wl_resource_get_client(sway_layer->layer_surface->resource);
         bool set_focus = seat->exclusive_client == client;
@@ -299,7 +299,7 @@ static void unmap(struct sway_layer_surface *sway_layer) {
         output_damage_surface(output, sway_layer->geo.x, sway_layer->geo.y,
                 sway_layer->layer_surface->surface, true);
 
-        struct sway_seat *seat = input_manager_current_seat(input_manager);
+        struct sway_seat *seat = input_manager_current_seat();
         if (seat->focused_layer == sway_layer->layer_surface) {
                 seat_set_focus_layer(seat, NULL);
         }
@@ -370,7 +370,7 @@ void handle_layer_shell_surface(struct wl_listener *listener, void *data) {
         if (!layer_surface->output) {
                 // Assign last active output
                 struct sway_output *output = NULL;
-                struct sway_seat *seat = input_manager_get_default_seat(input_manager);
+                struct sway_seat *seat = input_manager_get_default_seat();
                 if (seat) {
                         struct sway_workspace *ws = seat_get_focused_workspace(seat);