Can start private conversation from directory pane

lib/forez/ui/screens/forez_directory_screen.dart

@@ -7,6 +7,8 @@ import 'package:comunic/models/group_membership.dart';
 import 'package:comunic/models/user.dart';
 import 'package:comunic/ui/widgets/account_image_widget.dart';
 import 'package:comunic/ui/widgets/async_screen_widget.dart';
+import 'package:comunic/utils/account_utils.dart';
+import 'package:comunic/utils/conversations_utils.dart';
 import 'package:comunic/utils/intl_utils.dart';
 import 'package:flutter/material.dart';
 
@@ -14,6 +16,8 @@ import 'package:flutter/material.dart';
 ///
 /// @author Pierre Hubert
 
+enum _PopupMenuActions { PRIVATE_CONVERSATION }
+
 class ForezDirectoryScreen extends StatefulWidget {
   @override
   _ForezDirectoryScreenState createState() => _ForezDirectoryScreenState();
@@ -39,14 +43,52 @@ class _ForezDirectoryScreenState extends State<ForezDirectoryScreen> {
       );
 
   Widget onBuild() => ListView.builder(
-        itemBuilder: (c, i) =>
-            _buildMember(_members[i], _users.getUser(_members[i].userID)),
+        itemBuilder: (c, i) => _ForezMemberTile(
+          member: _members[i],
+          user: _users.getUser(_members[i].userID),
+          selectedAction: _doPopupMenuAction,
+        ),
         itemCount: _members.length,
       );
 
-  Widget _buildMember(GroupMembership membership, User user) => ListTile(
+  void _doPopupMenuAction(_PopupMenuActions action, User user) async {
+    switch (action) {
+      case _PopupMenuActions.PRIVATE_CONVERSATION:
+        openPrivateConversation(context, user.id);
+        break;
+    }
+  }
+}
+
+class _ForezMemberTile extends StatelessWidget {
+  final User user;
+  final GroupMembership member;
+  final Function(_PopupMenuActions, User) selectedAction;
+
+  const _ForezMemberTile({
+    Key key,
+    @required this.user,
+    @required this.member,
+    @required this.selectedAction,
+  }) : super(key: key);
+
+  @override
+  Widget build(BuildContext context) => ListTile(
         leading: AccountImageWidget(user: user),
         title: Text(user.fullName),
-        subtitle: Text(membership.membershipText),
+        subtitle: Text(member.membershipText),
+        trailing: user.id == userID()
+            ? null
+            : PopupMenuButton(
+                itemBuilder: (c) => popupMenuItems,
+                onSelected: (a) => selectedAction(a, user),
+              ),
       );
+
+  List<PopupMenuItem<_PopupMenuActions>> get popupMenuItems => [
+        PopupMenuItem(
+          child: Text(tr("Private conversation")),
+          value: _PopupMenuActions.PRIVATE_CONVERSATION,
+        ),
+      ];
 }