feat(ui): invoke ui client handlers

src/nvim/main.c

@@ -112,7 +112,6 @@ static const char *err_too_many_args = N_("Too many edit arguments");
 static const char *err_extra_cmd =
   N_("Too many \"+command\", \"-c command\" or \"--cmd command\" arguments");
 
-
 void event_init(void)
 {
   loop_init(&main_loop, NULL);
@@ -344,6 +343,12 @@ int main(int argc, char **argv)
     TIME_MSG("init screen for UI");
   }
 
+  if (ui_client_channel_id) {
+    ui_client_init(ui_client_channel_id);
+    ui_client_execute(ui_client_channel_id);
+    abort();  // unreachable
+  }
+
   init_default_mappings();  // Default mappings.
   TIME_MSG("init default mappings");
 
@@ -840,9 +845,8 @@ static void remote_request(mparm_T *params, int remote_args,
       exit(1);
     }
 
-    ui_client_init(chan);
-    ui_client_execute(chan);
-    abort();  // unreachable
+    ui_client_channel_id = chan;
+    return;
   }
 
   Array args = ARRAY_DICT_INIT;

src/nvim/msgpack_rpc/channel.c

@@ -547,12 +547,8 @@ void rpc_close(Channel *channel)
   channel->rpc.closed = true;
   channel_decref(channel);
 
-  if (channel->id == ui_client_channel_id) {
-    // TODO(bfredl): handle this in ui_client, where os_exit() is safe
-    exit(0);
-  }
-
-  if (channel->streamtype == kChannelStreamStdio) {
+  if (channel->streamtype == kChannelStreamStdio
+      || channel->id == ui_client_channel_id) {
     multiqueue_put(main_loop.fast_events, exit_event, 0);
   }
 }

src/nvim/ui_client.c

@@ -26,21 +26,21 @@ static void add_redraw_event_handler(String method, ApiRedrawWrapper handler)
 void ui_client_init(uint64_t chan)
 {
   Array args = ARRAY_DICT_INIT;
-  int width = 80;
-  int height = 25;
+  int width = Columns;
+  int height = Rows;
   Dictionary opts = ARRAY_DICT_INIT;
 
   PUT(opts, "rgb", BOOLEAN_OBJ(true));
   PUT(opts, "ext_linegrid", BOOLEAN_OBJ(true));
   PUT(opts, "ext_termcolors", BOOLEAN_OBJ(true));
 
-  // TODO(bfredl): use the size of the client UI
   ADD(args, INTEGER_OBJ((int)width));
   ADD(args, INTEGER_OBJ((int)height));
   ADD(args, DICTIONARY_OBJ(opts));
 
   rpc_send_event(chan, "nvim_ui_attach", args);
   msgpack_rpc_add_redraw();  // GAME!
+  redraw_methods_table_init();
   ui_client_channel_id = chan;
 }
 
@@ -61,9 +61,22 @@ Object ui_client_handle_redraw(uint64_t channel_id, Array args, Error *error)
 {
   for (size_t i = 0; i < args.size; i++) {
     Array call = args.items[i].data.array;
-    char *method_name = call.items[0].data.string.data;
+    String name = call.items[0].data.string;
+
+    ApiRedrawWrapper handler = map_get(String, ApiRedrawWrapper)(&redraw_methods, name);
+    if (!handler) {
+      ELOG("No redraw handler by name: %s", name.size ? name.data : "<empty>");
+      continue;
+    }
+
+    // fprintf(stderr, "%s: %zu\n", name.data, call.size-1);
+
+    DLOG("Invoke redraw handler by name: %s", name.data);
+    for (size_t j = 1; j < call.size; j++) {
+      Array internal_call_args = call.items[j].data.array;
+      handler(internal_call_args);
+    }
 
-    fprintf(stderr, "%s: %zu\n", method_name, call.size-1);
   }
   return NIL;
 }
@@ -80,22 +93,6 @@ void ui_client_execute(uint64_t chan)
   getout(0);
 }
 
-/// @param name Redraw method name
-/// @param name_len name size (includes terminating NUL)
-ApiRedrawWrapper get_redraw_event_handler(const char *name, size_t name_len, Error *error)
-{
-  String m = { .data = (char *)name, .size = name_len };
-  ApiRedrawWrapper rv =
-    map_get(String, ApiRedrawWrapper)(&redraw_methods, m);
-
-  if (!rv) {
-    api_set_error(error, kErrorTypeException, "Invalid method: %.*s",
-                  m.size > 0 ? (int)m.size : (int)sizeof("<empty>"),
-                  m.size > 0 ? m.data : "<empty>");
-  }
-  return rv;
-}
-
 static HlAttrs redraw_dict2hlattrs(Dictionary redraw_dict, bool rgb)
 {
   Error err = ERROR_INIT;