Display the list of friends of the user

lib/lists/friends_list.dart

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+import 'dart:collection';
+
+import 'package:comunic/models/friend.dart';
+
+/// List of friends of the user
+///
+/// @author Pierre HUBERT
+
+class FriendsList extends ListBase<Friend> {
+  List<Friend> _list = List();
+
+  int get length => _list.length;
+
+  set length(int length) => _list.length = length;
+
+  @override
+  Friend operator [](int index) => _list[index];
+
+  @override
+  void operator []=(int index, Friend value) => _list[index] = value;
+
+  /// Get the ID of all the friends of the current user
+  List<int> get usersId => map((f) => f.id).toList();
+}