hrt: don't keep list of available outputs

Keeping a list of the available outputs just duplicates work that we
have to do in the frontend anyways; the only reason why hrt should
keep it is if we do things with the list of outputs without input
from the front end. We might do that eventually for things like output
configuration, but we aren't anywhere near that yet.

heart/include/hrt/hrt_output.h

@@ -10,7 +10,6 @@
 struct hrt_output {
   struct wlr_output *wlr_output;
   struct hrt_server *server;
-  struct wl_list link;
 
   struct wl_listener frame;
   struct wl_listener destroy;

heart/include/hrt/hrt_server.h

@@ -22,7 +22,6 @@ struct hrt_server {
   struct wlr_allocator *allocator;
 
   struct wlr_scene *scene;
-  struct wl_list outputs;
   struct wl_listener new_output;
   struct wlr_output_manager_v1 *output_manager;
   struct wlr_output_layout *output_layout;

heart/src/output.c

@@ -21,7 +21,6 @@ static void handle_frame_notify(struct wl_listener *listener, void *data) {
 static void handle_output_destroy(struct wl_listener *listener, void *data) {
   wlr_log(WLR_DEBUG, "Output destroyed");
   struct hrt_output *output = wl_container_of(listener, output, destroy);
-  wl_list_remove(&output->link);
   struct hrt_server *server = output->server;
   server->output_callback->output_removed(output);
 
@@ -70,7 +69,6 @@ static void handle_new_output(struct wl_listener *listener, void *data) {
 
   output->destroy.notify = handle_output_destroy;
   wl_signal_add(&wlr_output->events.destroy, &output->destroy);
-  wl_list_insert(&server->outputs, &output->link);
 
   struct wlr_output_mode *mode = wlr_output_preferred_mode(wlr_output);
   if (mode != NULL) {
@@ -109,8 +107,6 @@ bool hrt_output_init(struct hrt_server *server, const struct hrt_output_callback
   server->output_manager_apply.notify = handle_output_manager_apply;
   server->output_manager_test.notify = handle_output_manager_test;
 
-  wl_list_init(&server->outputs);
-
   // temporary random seed:
   srand(time(0));
 

lisp/bindings/hrt-bindings.lisp

@@ -105,7 +105,6 @@ See themes section of man xcursor(3) to find where to find valid cursor names."
 (cffi:defcstruct hrt-output
   (wlr-output :pointer #| (:struct wlr-output) |# )
   (server (:pointer (:struct hrt-server)))
-  (link (:struct wl-list))
   (frame (:struct wl-listener))
   (destroy (:struct wl-listener))
   (color :float :count 4))
@@ -127,7 +126,6 @@ See themes section of man xcursor(3) to find where to find valid cursor names."
   (compositor :pointer #| (:struct wlr-compositor) |# )
   (allocator :pointer #| (:struct wlr-allocator) |# )
   (scene :pointer #| (:struct wlr-scene) |# )
-  (outputs (:struct wl-list))
   (new-output (:struct wl-listener))
   (output-manager :pointer #| (:struct wlr-output-manager-v1) |# )
   (output-layout :pointer #| (:struct wlr-output-layout) |# )