TF-234 Display selection multiple mailbox

lib/features/mailbox/presentation/extensions/list_mailbox_node_extension.dart

@@ -1,5 +1,7 @@
 
 import 'package:jmap_dart_client/jmap/mail/mailbox/mailbox.dart';
+import 'package:model/mailbox/expand_mode.dart';
+import 'package:model/mailbox/select_mode.dart';
 import 'package:tmail_ui_user/features/mailbox/presentation/model/mailbox_node.dart';
 
 extension ListMailboxNodeExtensions on List<MailboxNode> {
@@ -15,4 +17,29 @@ extension ListMailboxNodeExtensions on List<MailboxNode> {
       }
     }).toList();
   }
+
+  List<MailboxNode>? toggleSelectMailboxNode(MailboxNode selectedMailboxMode) {
+    return map((MailboxNode child) {
+      if (child.item.id == selectedMailboxMode.item.id) {
+        return child.toggleSelectMailboxNode();
+      } else {
+        if (child.hasChildren()) {
+          return child.copyWith(mailboxNodes: child.toggleSelectNode(selectedMailboxMode));
+        }
+        return child;
+      }
+    }).toList();
+  }
+
+  List<MailboxNode>? toSelectMailboxNode({required SelectMode selectMode, ExpandMode? newExpandMode}) {
+    return map((MailboxNode child) {
+      if (child.hasChildren()) {
+        return child.copyWith(
+            mailboxNodes: child.toSelectedNode(selectMode: selectMode, newExpandMode: newExpandMode),
+            newSelectMode: selectMode,
+            newExpandMode: newExpandMode);
+      }
+      return child.toSelectedMailboxNode(selectMode: selectMode, newExpandMode: newExpandMode);
+    }).toList();
+  }
 }