Fix user access denied page

lib/ui/routes/home_route.dart

@@ -1,6 +1,5 @@
 import 'package:comunic/helpers/account_helper.dart';
 import 'package:comunic/ui/routes/app_settings_route.dart';
-import 'package:comunic/ui/routes/user_page_route.dart';
 import 'package:comunic/ui/screens/conversations_list_screen.dart';
 import 'package:comunic/ui/screens/friends_list_screen.dart';
 import 'package:comunic/ui/screens/group_screen.dart';
@@ -8,6 +7,8 @@ import 'package:comunic/ui/screens/groups_list_screen.dart';
 import 'package:comunic/ui/screens/newest_posts.dart';
 import 'package:comunic/ui/screens/notifications_screen.dart';
 import 'package:comunic/ui/screens/other_friends_lists_screen.dart';
+import 'package:comunic/ui/screens/user_access_denied_screen.dart';
+import 'package:comunic/ui/screens/user_page_screen.dart';
 import 'package:comunic/ui/widgets/navbar_widget.dart';
 import 'package:comunic/utils/account_utils.dart';
 import 'package:comunic/utils/intl_utils.dart';
@@ -49,11 +50,16 @@ abstract class HomeController extends State<HomeRoute> {
   /// 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();
 }
 
 /// Private implementation of HomeController
@@ -69,8 +75,8 @@ class _HomeRouteState extends HomeController {
   }
 
   /// Pop the page
-  void _popPage() {
-    history.removeLast();
+  void popPage() {
+    if (history.length > 1) history.removeLast();
     setState(() {});
   }
 
@@ -78,7 +84,7 @@ class _HomeRouteState extends HomeController {
   Future<bool> _willPop() async {
     if (history.length == 1) return true;
 
-    _popPage();
+    popPage();
     return false;
   }
 
@@ -136,7 +142,10 @@ class _HomeRouteState extends HomeController {
         return FriendsListScreen();
 
       case BarCallbackActions.OPEN_USER_PAGE:
-        return UserPageRoute(userID: _currTab.args["userID"]);
+        return UserPageScreen(userID: _currTab.args["userID"]);
+
+      case BarCallbackActions.OPEN_USER_ACCESS_DENIED_PAGE:
+        return UserAccessDeniedScreen(userID: _currTab.args["userID"]);
 
       case BarCallbackActions.OPEN_GROUPS:
         return GroupsListScreen();
@@ -212,6 +221,12 @@ class _HomeRouteState extends HomeController {
         CurrPage(BarCallbackActions.OPEN_USER_PAGE, args: {"userID": userID}));
   }
 
+  @override
+  void openUserAccessDeniedPage(int userID) {
+    _pushPage(CurrPage(BarCallbackActions.OPEN_USER_ACCESS_DENIED_PAGE,
+        args: {"userID": userID}));
+  }
+
   @override
   void openUserFriendsList(int userID) {
     _pushPage(CurrPage(BarCallbackActions.OPEN_USER_FRIENDS_LIST,

lib/ui/screens/user_access_denied_screen.dart

@@ -2,29 +2,29 @@ import 'package:comunic/helpers/friends_helper.dart';
 import 'package:comunic/helpers/users_helper.dart';
 import 'package:comunic/models/friend_status.dart';
 import 'package:comunic/models/user.dart';
-import 'package:comunic/ui/routes/user_page_route.dart';
+import 'package:comunic/ui/routes/home_route.dart';
 import 'package:comunic/ui/widgets/FrienshipStatusWidget.dart';
 import 'package:comunic/ui/widgets/account_image_widget.dart';
 import 'package:comunic/utils/intl_utils.dart';
 import 'package:comunic/utils/ui_utils.dart';
 import 'package:flutter/material.dart';
 
-/// User access denied route
+/// User access denied screen
 ///
 /// @author Pierre HUBERT
 
-class UserAccessDeniedRoute extends StatefulWidget {
+class UserAccessDeniedScreen extends StatefulWidget {
   final int userID;
 
-  const UserAccessDeniedRoute({Key key, @required this.userID})
+  const UserAccessDeniedScreen({Key key, @required this.userID})
       : assert(userID != null),
         super(key: key);
 
   @override
-  _UserAccessDeniedRouteState createState() => _UserAccessDeniedRouteState();
+  _UserAccessDeniedScreenState createState() => _UserAccessDeniedScreenState();
 }
 
-class _UserAccessDeniedRouteState extends State<UserAccessDeniedRoute> {
+class _UserAccessDeniedScreenState extends State<UserAccessDeniedScreen> {
   final UsersHelper usersHelper = UsersHelper();
   final FriendsHelper friendsHelper = FriendsHelper();
 
@@ -49,14 +49,11 @@ class _UserAccessDeniedRouteState extends State<UserAccessDeniedRoute> {
       final user = await usersHelper.getSingleWithThrow(widget.userID);
 
       // Check if the two users are friend now
-      if (status.areFriend)
-        Navigator.of(context).pushReplacement(
-          MaterialPageRoute(
-            builder: (c) => UserPageRoute(
-                  userID: widget.userID,
-                ),
-          ),
-        );
+      if (status.areFriend) {
+        final controller = HomeController.of(context);
+        controller.popPage();
+        controller.openUserPage(widget.userID);
+      }
 
       setState(() {
         _status = status;

lib/ui/screens/user_page_screen.dart

@@ -3,7 +3,6 @@ import 'package:comunic/helpers/posts_helper.dart';
 import 'package:comunic/helpers/users_helper.dart';
 import 'package:comunic/models/advanced_user_info.dart';
 import 'package:comunic/ui/routes/home_route.dart';
-import 'package:comunic/ui/routes/user_access_denied_route.dart';
 import 'package:comunic/ui/widgets/network_image_widget.dart';
 import 'package:comunic/ui/widgets/post_create_form_widget.dart';
 import 'package:comunic/ui/widgets/posts_list_widget.dart';
@@ -21,18 +20,18 @@ enum _PageStatus { LOADING, ERROR, READY }
 
 enum _MenuOptions { FRIENDS_LIST }
 
-class UserPageRoute extends StatefulWidget {
+class UserPageScreen extends StatefulWidget {
   final int userID;
 
-  const UserPageRoute({Key key, @required this.userID})
+  const UserPageScreen({Key key, @required this.userID})
       : assert(userID != null),
         super(key: key);
 
   @override
-  _UserPageRouteState createState() => _UserPageRouteState();
+  _UserPageScreenState createState() => _UserPageScreenState();
 }
 
-class _UserPageRouteState extends State<UserPageRoute> {
+class _UserPageScreenState extends State<UserPageScreen> {
   // Helpers
   final usersHelper = UsersHelper();
   final PostsHelper _postsHelper = PostsHelper();
@@ -77,14 +76,11 @@ class _UserPageRouteState extends State<UserPageRoute> {
     } on GetUserAdvancedUserError catch (e) {
       _setStatus(_PageStatus.ERROR);
 
-      if (e.cause == GetUserAdvancedInformationErrorCause.NOT_AUTHORIZED)
-        Navigator.of(context).pushReplacement(
-          MaterialPageRoute(
-            builder: (c) => UserAccessDeniedRoute(
-              userID: widget.userID,
-            ),
-          ),
-        );
+      if (e.cause == GetUserAdvancedInformationErrorCause.NOT_AUTHORIZED) {
+        final controller = HomeController.of(context);
+        controller.popPage();
+        controller.openUserAccessDeniedPage(widget.userID);
+      }
     }
   }
 

lib/ui/widgets/navbar_widget.dart

@@ -18,6 +18,7 @@ enum BarCallbackActions {
   OPEN_GROUPS,
   OPEN_GROUP_PAGE,
   OPEN_USER_PAGE,
+  OPEN_USER_ACCESS_DENIED_PAGE,
   OPEN_APP_SETTINGS,
   OPEN_USER_FRIENDS_LIST,
   OPEN_ABOUT_DIALOG,