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).

2 files changed, 9 insertions, 24 deletions

diff --git a/include/sway/input/input-manager.h b/include/sway/input/input-manager.h
index b7073006..219aa9ba 100644
--- a/include/sway/input/input-manager.h
+++ b/include/sway/input/input-manager.h
@@ -7,12 +7,6 @@
 #include "sway/config.h"
 #include "list.h"
 
-/**
- * The global singleton input manager
- * TODO: make me not a global
- */
-extern struct sway_input_manager *input_manager;
-
 struct sway_input_device {
         char *identifier;
         struct wlr_input_device *wlr_device;
@@ -21,7 +15,6 @@ struct sway_input_device {
 };
 
 struct sway_input_manager {
-        struct sway_server *server;
         struct wl_list devices;
         struct wl_list seats;
 
@@ -36,30 +29,24 @@ struct sway_input_manager {
 
 struct sway_input_manager *input_manager_create(struct sway_server *server);
 
-bool input_manager_has_focus(struct sway_input_manager *input,
-                struct sway_node *node);
+bool input_manager_has_focus(struct sway_node *node);
 
-void input_manager_set_focus(struct sway_input_manager *input,
-                struct sway_node *node);
+void input_manager_set_focus(struct sway_node *node);
 
-void input_manager_configure_xcursor(struct sway_input_manager *input);
+void input_manager_configure_xcursor(void);
 
-void input_manager_apply_input_config(struct sway_input_manager *input,
-                struct input_config *input_config);
+void input_manager_apply_input_config(struct input_config *input_config);
 
-void input_manager_apply_seat_config(struct sway_input_manager *input,
-                struct seat_config *seat_config);
+void input_manager_apply_seat_config(struct seat_config *seat_config);
 
-struct sway_seat *input_manager_get_default_seat(
-                struct sway_input_manager *input);
+struct sway_seat *input_manager_get_default_seat(void);
 
-struct sway_seat *input_manager_get_seat(struct sway_input_manager *input,
-                const char *seat_name);
+struct sway_seat *input_manager_get_seat(const char *seat_name);
 
 /**
  * Gets the last seat the user interacted with
  */
-struct sway_seat *input_manager_current_seat(struct sway_input_manager *input);
+struct sway_seat *input_manager_current_seat(void);
 
 struct input_config *input_device_get_config(struct sway_input_device *device);
 
diff --git a/include/sway/input/seat.h b/include/sway/input/seat.h
index e9f553f3..ef65810c 100644
--- a/include/sway/input/seat.h
+++ b/include/sway/input/seat.h
@@ -47,7 +47,6 @@ enum sway_seat_operation {
 struct sway_seat {
         struct wlr_seat *wlr_seat;
         struct sway_cursor *cursor;
-        struct sway_input_manager *input;
 
         bool has_focus;
         struct wl_list focus_stack; // list of containers in focus order
@@ -89,8 +88,7 @@ struct sway_seat {
         struct wl_list link; // input_manager::seats
 };
 
-struct sway_seat *seat_create(struct sway_input_manager *input,
-                const char *seat_name);
+struct sway_seat *seat_create(const char *seat_name);
 
 void seat_destroy(struct sway_seat *seat);