Prepare Tablet mode integration

lib/ui/routes/conversation_route.dart

@@ -1,6 +1,6 @@
 import 'package:comunic/helpers/conversations_helper.dart';
 import 'package:comunic/models/conversation.dart';
-import 'package:comunic/ui/routes/main_route.dart';
+import 'package:comunic/ui/routes/main_route/main_route.dart';
 import 'package:comunic/ui/routes/update_conversation_route.dart';
 import 'package:comunic/ui/screens/conversation_screen.dart';
 import 'package:comunic/ui/widgets/comunic_back_button_widget.dart';

lib/ui/routes/main_route/main_route.dart

@@ -0,0 +1,39 @@
+import 'package:flutter/material.dart';
+
+/// Abstract main application route
+///
+/// This mixin contains methods available in all display modes
+///
+/// @author Pierre Hubert
+
+mixin MainRoute implements StatefulWidget {}
+
+/// Public interface of home controller
+mixin MainController implements State<MainRoute> {
+  /// Get current instance of Home controller
+  static MainController of(BuildContext context) =>
+      context.findAncestorStateOfType<MainController>();
+
+  /// Open user page
+  void openUserPage(int userID);
+
+  void openUserAccessDeniedPage(int userID);
+
+  /// Open a specific group page specified by its [groupID]
+  void openGroup(int groupID);
+
+  /// Display the list of friends of a user
+  void openUserFriendsList(int userID);
+
+  /// Pop current page. Last page can not be popped
+  void popPage();
+
+  /// Push a new widget
+  void push(Widget w, {bool hideNavBar});
+
+  /// Open a conversation
+  void openConversation(int convID);
+
+  /// Start a call for a given conversation
+  void startCall(int convID);
+}

lib/ui/routes/main_route/smartphone_route.dart

@@ -2,6 +2,7 @@ import 'package:comunic/helpers/account_helper.dart';
 import 'package:comunic/ui/routes/account_settings/account_settings_route.dart';
 import 'package:comunic/ui/routes/app_settings_route.dart';
 import 'package:comunic/ui/routes/conversation_route.dart';
+import 'package:comunic/ui/routes/main_route/main_route.dart';
 import 'package:comunic/ui/screens/call_screen.dart';
 import 'package:comunic/ui/screens/conversations_list_screen.dart';
 import 'package:comunic/ui/screens/friends_list_screen.dart';
@@ -19,13 +20,13 @@ import 'package:comunic/utils/intl_utils.dart';
 import 'package:comunic/utils/ui_utils.dart';
 import 'package:flutter/material.dart';
 
-import 'login_route.dart';
+import '../login_route.dart';
 
 /// Main route of the application
 ///
 /// @author Pierre HUBERT
 
-class MainRoute extends StatefulWidget {
+class SmartphoneMainRoute extends StatefulWidget implements MainRoute {
   @override
   State<StatefulWidget> createState() => _MainRouteState();
 }
@@ -51,38 +52,10 @@ class CurrPage {
       "\n}";
 }
 
-/// Public interface of home controller
-abstract class MainController extends State<MainRoute> {
-  /// Get current instance of Home controller
-  static MainController of(BuildContext context) =>
-      context.findAncestorStateOfType<MainController>();
 
-  /// Open user page
-  void openUserPage(int userID);
-
-  void openUserAccessDeniedPage(int userID);
-
-  /// Open a specific group page specified by its [groupID]
-  void openGroup(int groupID);
-
-  /// Display the list of friends of a user
-  void openUserFriendsList(int userID);
-
-  /// Pop current page. Last page can not be popped
-  void popPage();
-
-  /// Push a new widget
-  void push(Widget w, {bool hideNavBar});
-
-  /// Open a conversation
-  void openConversation(int convID);
-
-  /// Start a call for a given conversation
-  void startCall(int convID);
-}
 
 /// Private implementation of HomeController
-class _MainRouteState extends MainController {
+class _MainRouteState extends State<MainRoute> implements MainController {
   CurrPage get _currTab => history.last;
   List<CurrPage> history = List();