Bug: archive group from group view screen/shows blank group

lib/data/models/entities.dart

@@ -254,7 +254,7 @@ abstract class BaseEntity implements SelectableEntity {
 
   String get entityKey => '__${entityType}__${id}__';
 
-  bool get isNew => id == null || (int.tryParse(id) ?? 0) < 0;
+  bool get isNew => (id ?? '').isEmpty || (int.tryParse(id) ?? 0) < 0;
 
   bool get isOld => !isNew;
 

lib/ui/app/blank_screen.dart

@@ -0,0 +1,24 @@
+import 'package:flutter/material.dart';
+import 'package:invoiceninja_flutter/ui/app/help_text.dart';
+import 'package:invoiceninja_flutter/utils/platforms.dart';
+
+class BlankScreen extends StatelessWidget {
+  const BlankScreen([this.message]);
+
+  final String message;
+
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      appBar: AppBar(
+        centerTitle: false,
+        automaticallyImplyLeading: isMobile(context),
+      ),
+      body: Container(
+        color: Theme.of(context).cardColor,
+        child: HelpText(message ?? ''),
+      ),
+    );
+  }
+}
+

lib/ui/app/entities/entity_state_title.dart

@@ -10,9 +10,13 @@ class EntityStateTitle extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     final localization = AppLocalization.of(context);
-    final titleText = localization.lookup('${entity.entityType}') +
-        '  ›  ' +
-        entity.listDisplayName;
+
+    String titleText = '';
+    if (entity.isOld) {
+      titleText = localization.lookup('${entity.entityType}') +
+          '  ›  ' +
+          entity.listDisplayName;
+    }
 
     return Text(
       titleText,

lib/ui/app/main_screen.dart

@@ -8,10 +8,10 @@ import 'package:invoiceninja_flutter/redux/dashboard/dashboard_actions.dart';
 import 'package:invoiceninja_flutter/redux/reports/reports_actions.dart';
 import 'package:invoiceninja_flutter/redux/settings/settings_actions.dart';
 import 'package:invoiceninja_flutter/redux/ui/pref_state.dart';
+import 'package:invoiceninja_flutter/ui/app/blank_screen.dart';
 import 'package:invoiceninja_flutter/ui/app/change_layout_banner.dart';
 import 'package:invoiceninja_flutter/ui/app/history_drawer_vm.dart';
 import 'package:invoiceninja_flutter/ui/app/menu_drawer_vm.dart';
-import 'package:invoiceninja_flutter/ui/app/help_text.dart';
 import 'package:invoiceninja_flutter/ui/app/screen_imports.dart';
 import 'package:invoiceninja_flutter/ui/credit/credit_email_vm.dart';
 import 'package:invoiceninja_flutter/ui/credit/credit_screen.dart';
@@ -36,7 +36,6 @@ import 'package:invoiceninja_flutter/ui/webhook/edit/webhook_edit_vm.dart';
 import 'package:invoiceninja_flutter/ui/webhook/view/webhook_view_vm.dart';
 import 'package:invoiceninja_flutter/ui/webhook/webhook_screen_vm.dart';
 import 'package:invoiceninja_flutter/utils/localization.dart';
-import 'package:invoiceninja_flutter/utils/platforms.dart';
 import 'package:invoiceninja_flutter/ui/app/app_border.dart';
 import 'package:redux/redux.dart';
 
@@ -629,26 +628,6 @@ class EntityScreens extends StatelessWidget {
   }
 }
 
-class BlankScreen extends StatelessWidget {
-  const BlankScreen([this.message]);
-
-  final String message;
-
-  @override
-  Widget build(BuildContext context) {
-    return Scaffold(
-      appBar: AppBar(
-        centerTitle: false,
-        automaticallyImplyLeading: isMobile(context),
-      ),
-      body: Container(
-        color: Theme.of(context).cardColor,
-        child: HelpText(message ?? ''),
-      ),
-    );
-  }
-}
-
 class _EntityFilter extends StatelessWidget {
   const _EntityFilter({@required this.show});
 

lib/ui/app/view_scaffold.dart

@@ -5,6 +5,7 @@ import 'package:invoiceninja_flutter/redux/app/app_actions.dart';
 import 'package:invoiceninja_flutter/redux/app/app_state.dart';
 import 'package:invoiceninja_flutter/redux/ui/ui_actions.dart';
 import 'package:invoiceninja_flutter/ui/app/actions_menu_button.dart';
+import 'package:invoiceninja_flutter/ui/app/blank_screen.dart';
 import 'package:invoiceninja_flutter/ui/app/entities/entity_state_title.dart';
 import 'package:invoiceninja_flutter/utils/localization.dart';
 import 'package:invoiceninja_flutter/utils/platforms.dart';
@@ -37,12 +38,17 @@ class ViewScaffold extends StatelessWidget {
     final userCompany = state.userCompany;
     final isSettings = entity.entityType.isSetting;
 
-    String title = (entity.listDisplayName ?? '').isEmpty
-        ? localization.pending
-        : entity.listDisplayName;
+    String title;
+    if (entity.isNew) {
+      title = '';
+    } else {
+      title = (entity.listDisplayName ?? '').isEmpty
+          ? localization.pending
+          : entity.listDisplayName;
 
-    if (!(isFilter ?? false)) {
-      title = localization.lookup('${entity.entityType}') + '  ›  ' + title;
+      if (!(isFilter ?? false)) {
+        title = localization.lookup('${entity.entityType}') + '  ›  ' + title;
+      }
     }
 
     Widget leading;
@@ -107,7 +113,7 @@ class ViewScaffold extends StatelessWidget {
                   ),
                 ],
         ),
-        body: body,
+        body: entity.isNew ? BlankScreen(localization.noRecordSelected) : body,
       ),
     );
   }