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/desktop/render.c b/sway/desktop/render.c
index 9b26c560..1a72f752 100644
--- a/sway/desktop/render.c
+++ b/sway/desktop/render.c
@@ -885,7 +885,7 @@ static void render_floating(struct sway_output *soutput,
 static void render_dropzones(struct sway_output *output,
                 pixman_region32_t *damage) {
         struct sway_seat *seat;
-        wl_list_for_each(seat, &input_manager->seats, link) {
+        wl_list_for_each(seat, &server.input->seats, link) {
                 if (seat->operation == OP_MOVE_TILING && seat->op_target_node
                                 && node_get_output(seat->op_target_node) == output) {
                         float color[4];
@@ -995,7 +995,7 @@ void output_render(struct sway_output *output, struct timespec *when,
 
         render_dropzones(output, damage);
 
-        struct sway_seat *seat = input_manager_current_seat(input_manager);
+        struct sway_seat *seat = input_manager_current_seat();
         struct sway_container *focus = seat_get_focused_container(seat);
         if (focus && focus->view) {
                 render_view_popups(focus->view, output, damage, focus->alpha);