Turn user page route into a screen

lib/ui/screens/other_friends_lists_screen.dart

@@ -0,0 +1,107 @@
+import 'package:comunic/helpers/friends_helper.dart';
+import 'package:comunic/helpers/users_helper.dart';
+import 'package:comunic/lists/users_list.dart';
+import 'package:comunic/ui/tiles/simple_user_tile.dart';
+import 'package:comunic/utils/intl_utils.dart';
+import 'package:comunic/utils/navigation_utils.dart';
+import 'package:comunic/utils/ui_utils.dart';
+import 'package:flutter/material.dart';
+
+/// Other friends list route (not intended to display current user friends list)
+///
+/// @author Pierre HUBERT
+
+class OtherUserFriendsListScreen extends StatefulWidget {
+  final int userID;
+
+  const OtherUserFriendsListScreen({
+    Key key,
+    @required this.userID,
+  })  : assert(userID != null),
+        super(key: key);
+
+  @override
+  _OtherUserFriendsListScreenState createState() =>
+      _OtherUserFriendsListScreenState();
+}
+
+class _OtherUserFriendsListScreenState
+    extends State<OtherUserFriendsListScreen> {
+  final FriendsHelper friendsHelper = FriendsHelper();
+  final UsersHelper usersHelper = UsersHelper();
+
+  UsersList _list;
+  bool _error = false;
+
+  String get _routeName => tr("Friends of %name%",
+      args: {"name": _list.getUser(widget.userID).displayName});
+
+  void setError(bool e) => setState(() => _error = e);
+
+  @override
+  void didChangeDependencies() {
+    super.didChangeDependencies();
+    load();
+  }
+
+  /// Load the list of friends of the user
+  Future<void> load() async {
+    setError(false);
+
+    try {
+      final list = await usersHelper
+          .getListWithThrow(await friendsHelper.getOtherUserList(widget.userID)
+            ..add(widget.userID));
+
+      setState(() {
+        _list = list;
+      });
+    } catch (e, st) {
+      print(e);
+      print(st);
+      setError(true);
+    }
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    if (_error) return _buildError();
+
+    if (_list == null) return buildCenteredProgressBar();
+
+    return Scaffold(
+      appBar: AppBar(
+        title: Text(_routeName),
+      ),
+      body: ListView.builder(
+        itemCount: _list.length,
+        itemBuilder: (c, i) => SimpleUserTile(
+          user: _list[i],
+          onTap: (u) => openUserPage(
+            context: context,
+            userID: u.id,
+          ),
+        ),
+      ),
+    );
+  }
+
+  Widget _buildError() {
+    return Scaffold(
+      body: buildErrorCard(
+        tr(
+          "Could not get the list of friends of this user !",
+        ),
+        actions: [
+          FlatButton(
+            child: Text(
+              tr("Try again").toUpperCase(),
+              style: TextStyle(color: Colors.white),
+            ),
+            onPressed: load,
+          )
+        ],
+      ),
+    );
+  }
+}