- Introduction on base view model and stateless widget classes

- Implementation of firebase
- Implementation of dependency injection

Took 11 hours 26 minutes

lib/managers/DialogManager.dart

@@ -0,0 +1,54 @@
+import 'package:flutter/material.dart';
+import 'package:days_left/services/DialogService.dart';
+
+import '../locator.dart';
+import '../model/DialogModels.dart';
+
+class DialogManager extends StatefulWidget {
+  final Widget child;
+  DialogManager({Key key, this.child}) : super(key: key);
+
+  _DialogManagerState createState() => _DialogManagerState();
+}
+
+class _DialogManagerState extends State<DialogManager> {
+  DialogService _dialogService = locator<DialogService>();
+
+  @override
+  void initState() {
+    super.initState();
+    _dialogService.registerDialogListener(_showDialog);
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return widget.child;
+  }
+
+  void _showDialog(DialogRequest request) {
+    var isConfirmationDialog = request.cancelTitle != null;
+    showDialog(
+        context: context,
+        builder: (context) => AlertDialog(
+          title: Text(request.title),
+          content: Text(request.description),
+          actions: <Widget>[
+            if (isConfirmationDialog)
+              FlatButton(
+                child: Text(request.cancelTitle),
+                onPressed: () {
+                  _dialogService
+                      .dialogComplete(DialogResponse(confirmed: false));
+                },
+              ),
+            FlatButton(
+              child: Text(request.buttonTitle),
+              onPressed: () {
+                _dialogService
+                    .dialogComplete(DialogResponse(confirmed: true));
+              },
+            ),
+          ],
+        ));
+  }
+}