Start to build Forez main route

lib/ui/widgets/init_widget.dart

@@ -108,7 +108,7 @@ class _InitializeWidgetState extends SafeState<InitializeWidget> {
     if (_error || !WebSocketHelper.isConnected()) return _buildNonReadyWidget();
 
     if (config().mainRouteBuilder != null)
-      return config().mainRouteBuilder(context);
+      return config().mainRouteBuilder(context, mainControllerKey);
 
     return isTablet(context)
         ? TabletRoute(key: mainControllerKey)

lib/ui/widgets/status_widget.dart

@@ -0,0 +1,62 @@
+import 'package:comunic/helpers/events_helper.dart';
+import 'package:comunic/helpers/notifications_helper.dart';
+import 'package:comunic/ui/widgets/safe_state.dart';
+import 'package:comunic/utils/log_utils.dart';
+import 'package:flutter/material.dart';
+
+/// Status widget
+///
+/// Store for its children information about the number of unread conversations
+/// & the number of unread conversations
+///
+/// @author Pierre Hubert
+
+class StatusWidget extends StatefulWidget {
+  final Widget Function(BuildContext) child;
+
+  const StatusWidget({
+    Key key,
+    @required this.child,
+  })  : assert(child != null),
+        super(key: key);
+
+  @override
+  StatusWidgetState createState() => StatusWidgetState();
+}
+
+class StatusWidgetState extends SafeState<StatusWidget> {
+  int unreadNotifications = 0;
+  int unreadConversations = 0;
+
+  Future<void> init() async {
+    try {
+      final res = await NotificationsHelper().countUnread();
+      unreadNotifications = res.notifications;
+      unreadConversations = res.conversations;
+
+      setState(() {});
+    } catch (e, s) {
+      logError(e, s);
+      print("Failed to initialize StatusWidget!");
+    }
+  }
+
+  @override
+  void initState() {
+    init();
+    super.initState();
+
+    listenChangeState<NewNumberNotifsEvent>(
+        (e) => unreadNotifications = e.newNum);
+
+    listenChangeState<NewNumberUnreadConversations>(
+        (e) => unreadConversations = e.newNum);
+  }
+
+  /// Find an ancestor of this object
+  static StatusWidgetState of(BuildContext c) =>
+      c.findAncestorStateOfType<StatusWidgetState>();
+
+  @override
+  Widget build(BuildContext context) => widget.child(context);
+}

lib/ui/widgets/tab_transition_widget.dart

@@ -0,0 +1,32 @@
+import 'package:flutter/material.dart';
+
+class TabTransitionWidget extends StatefulWidget {
+  final Widget child;
+
+  const TabTransitionWidget(this.child, {Key key})
+      : assert(child != null),
+        super(key: key);
+
+  @override
+  _TabTransitionWidgetState createState() => _TabTransitionWidgetState();
+}
+
+class _TabTransitionWidgetState extends State<TabTransitionWidget> {
+  var _show = false;
+
+  @override
+  void initState() {
+    super.initState();
+    Future.delayed(Duration(microseconds: 10)).then((value) {
+      if (mounted) setState(() => _show = true);
+    });
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    if (!_show)
+      return Center(child: CircularProgressIndicator());
+    else
+      return widget.child;
+  }
+}