improvement: hide action if data not ready

lib/scaffolds/refresh_stateful.dart

@@ -58,7 +58,7 @@ class _RefreshStatefulScaffoldState<T>
   }
 
   Widget get _action {
-    if (widget.actionBuilder == null) return null;
+    if (widget.actionBuilder == null || _data == null) return null;
     return widget.actionBuilder(_data, setState);
   }
 

lib/screens/gitlab_project.dart

@@ -38,9 +38,6 @@ class GitlabProjectScreen extends StatelessWidget {
         return project;
       },
       actionBuilder: (data, setState) {
-        if (data == null)
-          return ActionButton(title: 'Project Actions', items: []);
-
         return ActionButton(
           title: 'Project Actions',
           items: [

lib/screens/issue_form.dart

@@ -10,9 +10,11 @@ import 'package:git_touch/utils/utils.dart';
 import 'package:provider/provider.dart';
 
 final issueAddRouter = RouterScreen(
-    '/:owner/:name/issues/new',
-    (context, params) =>
-        IssueFormScreen(params['owner'].first, params['name'].first));
+  '/:owner/:name/issues/new',
+  (context, params) {
+    return IssueFormScreen(params['owner'].first, params['name'].first);
+  },
+);
 
 class IssueFormScreen extends StatefulWidget {
   final String owner;

lib/screens/object.dart

@@ -104,7 +104,6 @@ class ObjectScreen extends StatelessWidget {
         return data;
       },
       actionBuilder: (data, _) {
-        if (data == null) return null;
         switch (data.resolveType) {
           case 'Blob':
             final blob = data as GithubObjectBlob;

lib/screens/repository.dart

@@ -69,9 +69,6 @@ class RepositoryScreen extends StatelessWidget {
         return Tuple2(rs[0] as GithubRepositoryRepository, rs[1] as String);
       },
       actionBuilder: (data, setState) {
-        if (data == null)
-          return ActionButton(title: 'Repository Actions', items: []);
-
         final repo = data.item1;
         return ActionButton(
           title: 'Repository Actions',

lib/screens/user.dart

@@ -360,12 +360,6 @@ class UserScreen extends StatelessWidget {
       },
       title: AppBarTitle(isViewer ? 'Me' : 'User'), // TODO:
       actionBuilder: (payload, _) {
-        if (payload == null)
-          return ActionButton(
-            title: "Actions",
-            items: [],
-          );
-
         switch (payload.resolveType) {
           case 'User':
             final user = payload as GithubUserUser;