Display the list of members of a conversation

lib/ui/screens/conversation_members_screen.dart

@@ -0,0 +1,66 @@
+import 'package:comunic/helpers/conversations_helper.dart';
+import 'package:comunic/helpers/users_helper.dart';
+import 'package:comunic/lists/users_list.dart';
+import 'package:comunic/models/conversation.dart';
+import 'package:comunic/ui/widgets/account_image_widget.dart';
+import 'package:comunic/ui/widgets/async_screen_widget.dart';
+import 'package:comunic/utils/intl_utils.dart';
+import 'package:flutter/material.dart';
+
+/// Conversation members screen
+///
+/// @author Pierre Hubert
+
+class ConversationMembersScreen extends StatefulWidget {
+  final int convID;
+
+  const ConversationMembersScreen({
+    Key key,
+    @required this.convID,
+  })  : assert(convID != null),
+        super(key: key);
+
+  @override
+  _ConversationMembersScreenState createState() =>
+      _ConversationMembersScreenState();
+}
+
+class _ConversationMembersScreenState extends State<ConversationMembersScreen> {
+  Conversation _conversation;
+  UsersList _members;
+
+  Future<void> _refresh() async {
+    _conversation =
+        await ConversationsHelper().getSingle(widget.convID, force: true);
+    _members =
+        await UsersHelper().getListWithThrow(_conversation.members.toSet());
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      appBar: AppBar(title: Text(tr("Conversation members"))),
+      body: AsyncScreenWidget(
+        onReload: _refresh,
+        onBuild: _buildMembersList,
+        errorMessage:
+            tr("Could not load the list of members of this conversation!"),
+      ),
+    );
+  }
+
+  Widget _buildMembersList() => ListView.builder(
+        itemBuilder: _buildItem,
+        itemCount: _conversation.members.length,
+      );
+
+  Widget _buildItem(BuildContext context, int index) {
+    final user = _members.getUser(_conversation.members[index]);
+    return ListTile(
+      leading: AccountImageWidget(user: user),
+      title: Text(user.displayName),
+      subtitle:
+          Text(_conversation.ownerID == user.id ? tr("Owner") : tr("Member")),
+    );
+  }
+}