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, 2 insertions, 2 deletions

diff --git a/sway/tree/output.c b/sway/tree/output.c
index c3176325..524a64ab 100644
--- a/sway/tree/output.c
+++ b/sway/tree/output.c
@@ -83,7 +83,7 @@ void output_enable(struct sway_output *output, struct output_config *oc) {
                 struct sway_workspace *ws = workspace_create(output, ws_name);
                 // Set each seat's focus if not already set
                 struct sway_seat *seat = NULL;
-                wl_list_for_each(seat, &input_manager->seats, link) {
+                wl_list_for_each(seat, &server.input->seats, link) {
                         if (!seat->has_focus) {
                                 seat_set_focus_workspace(seat, ws);
                         }
@@ -97,7 +97,7 @@ void output_enable(struct sway_output *output, struct output_config *oc) {
         }
         wl_signal_init(&output->events.destroy);
 
-        input_manager_configure_xcursor(input_manager);
+        input_manager_configure_xcursor();
 
         wl_signal_add(&wlr_output->events.mode, &output->mode);
         wl_signal_add(&wlr_output->events.transform, &output->transform);