Ready to implement the list of notifications

lib/ui/screens/notifications_screen.dart

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+import 'package:comunic/lists/notifications_list.dart';
+import 'package:comunic/utils/intl_utils.dart';
+import 'package:comunic/utils/ui_utils.dart';
+import 'package:flutter/material.dart';
+
+/// Notifications screen
+///
+/// @author Pierre HUBERT
+
+enum _Status { LOADING, ERROR, NONE }
+
+class NotificationsScreen extends StatefulWidget {
+  @override
+  _NotificationsScreenState createState() => _NotificationsScreenState();
+}
+
+class _NotificationsScreenState extends State<NotificationsScreen> {
+  NotificationsList _list;
+  _Status _status = _Status.LOADING;
+
+  void setStatus(_Status s) => setState(() => _status = s);
+
+  Future<void> _loadList() async {
+    setStatus(_Status.LOADING);
+
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    // In case of error
+    if (_status == _Status.ERROR)
+      return buildErrorCard(tr("Could not get the list of notifications!"),
+          actions: [
+            MaterialButton(
+              onPressed: () => _loadList(),
+              child: Text(tr("Try again".toUpperCase())),
+            )
+          ]);
+
+    // Loading status
+    if (_list == null || _status == _Status.LOADING)
+      return Center(
+        child: CircularProgressIndicator(),
+      );
+  }
+}