Optimize SceneTree's `change_scene_to_file` autocompletion

modules/gdscript/gdscript_editor.cpp

@@ -828,17 +828,21 @@ static String _make_arguments_hint(const GDScriptParser::FunctionNode *p_functio
 	return arghint;
 }
 
-static void _get_directory_contents(EditorFileSystemDirectory *p_dir, HashMap<String, ScriptLanguage::CodeCompletionOption> &r_list) {
+static void _get_directory_contents(EditorFileSystemDirectory *p_dir, HashMap<String, ScriptLanguage::CodeCompletionOption> &r_list, const StringName &p_required_type = StringName()) {
 	const String quote_style = EDITOR_GET("text_editor/completion/use_single_quotes") ? "'" : "\"";
+	const bool requires_type = p_required_type;
 
 	for (int i = 0; i < p_dir->get_file_count(); i++) {
+		if (requires_type && !ClassDB::is_parent_class(p_dir->get_file_type(i), p_required_type)) {
+			continue;
+		}
 		ScriptLanguage::CodeCompletionOption option(p_dir->get_file_path(i), ScriptLanguage::CODE_COMPLETION_KIND_FILE_PATH);
 		option.insert_text = option.display.quote(quote_style);
 		r_list.insert(option.display, option);
 	}
 
 	for (int i = 0; i < p_dir->get_subdir_count(); i++) {
-		_get_directory_contents(p_dir->get_subdir(i), r_list);
+		_get_directory_contents(p_dir->get_subdir(i), r_list, p_required_type);
 	}
 }
 
@@ -2803,6 +2807,16 @@ static void _find_call_arguments(GDScriptParser::CompletionContext &p_context, c
 						r_result.insert(option.display, option);
 					}
 				}
+				if (EDITOR_GET("text_editor/completion/complete_file_paths")) {
+					if (p_argidx == 0 && p_method == SNAME("change_scene_to_file") && ClassDB::is_parent_class(class_name, SNAME("SceneTree"))) {
+						HashMap<String, ScriptLanguage::CodeCompletionOption> list;
+						_get_directory_contents(EditorFileSystem::get_singleton()->get_filesystem(), list, SNAME("PackedScene"));
+						for (const KeyValue<String, ScriptLanguage::CodeCompletionOption> &key_value_pair : list) {
+							ScriptLanguage::CodeCompletionOption option = key_value_pair.value;
+							r_result.insert(option.display, option);
+						}
+					}
+				}
 
 				base_type.kind = GDScriptParser::DataType::UNRESOLVED;
 			} break;

scene/main/scene_tree.cpp

@@ -1693,45 +1693,16 @@ void SceneTree::add_idle_callback(IdleCallback p_callback) {
 #ifdef TOOLS_ENABLED
 void SceneTree::get_argument_options(const StringName &p_function, int p_idx, List<String> *r_options) const {
 	const String pf = p_function;
-	if (pf == "change_scene_to_file") {
-		Ref<DirAccess> dir_access = DirAccess::create(DirAccess::ACCESS_RESOURCES);
-		List<String> directories;
-		directories.push_back(dir_access->get_current_dir());
-
-		while (!directories.is_empty()) {
-			dir_access->change_dir(directories.back()->get());
-			directories.pop_back();
-
-			dir_access->list_dir_begin();
-			String filename = dir_access->get_next();
-
-			while (!filename.is_empty()) {
-				if (filename == "." || filename == "..") {
-					filename = dir_access->get_next();
-					continue;
-				}
-
-				if (dir_access->dir_exists(filename)) {
-					directories.push_back(dir_access->get_current_dir().path_join(filename));
-				} else if (filename.ends_with(".tscn") || filename.ends_with(".scn")) {
-					r_options->push_back("\"" + dir_access->get_current_dir().path_join(filename) + "\"");
-				}
-
-				filename = dir_access->get_next();
-			}
-		}
-	} else {
-		bool add_options = false;
-		if (p_idx == 0) {
-			add_options = pf == "get_nodes_in_group" || pf == "has_group" || pf == "get_first_node_in_group" || pf == "set_group" || pf == "notify_group" || pf == "call_group" || pf == "add_to_group";
-		} else if (p_idx == 1) {
-			add_options = pf == "set_group_flags" || pf == "call_group_flags" || pf == "notify_group_flags";
-		}
-		if (add_options) {
-			HashMap<StringName, String> global_groups = ProjectSettings::get_singleton()->get_global_groups_list();
-			for (const KeyValue<StringName, String> &E : global_groups) {
-				r_options->push_back(E.key.operator String().quote());
-			}
+	bool add_options = false;
+	if (p_idx == 0) {
+		add_options = pf == "get_nodes_in_group" || pf == "has_group" || pf == "get_first_node_in_group" || pf == "set_group" || pf == "notify_group" || pf == "call_group" || pf == "add_to_group";
+	} else if (p_idx == 1) {
+		add_options = pf == "set_group_flags" || pf == "call_group_flags" || pf == "notify_group_flags";
+	}
+	if (add_options) {
+		HashMap<StringName, String> global_groups = ProjectSettings::get_singleton()->get_global_groups_list();
+		for (const KeyValue<StringName, String> &E : global_groups) {
+			r_options->push_back(E.key.operator String().quote());
 		}
 	}
 	MainLoop::get_argument_options(p_function, p_idx, r_options);