Initial commit.

Wino.Mail.ViewModels/Data/MailItemContainer.cs

@@ -0,0 +1,20 @@
+using System;
+
+namespace Wino.Mail.ViewModels.Data
+{
+    public class MailItemContainer
+    {
+        public MailItemViewModel ItemViewModel { get; set; }
+        public ThreadMailItemViewModel ThreadViewModel { get; set; }
+
+        public MailItemContainer(MailItemViewModel itemViewModel, ThreadMailItemViewModel threadViewModel) : this(itemViewModel)
+        {
+            ThreadViewModel = threadViewModel ?? throw new ArgumentNullException(nameof(threadViewModel));
+        }
+
+        public MailItemContainer(MailItemViewModel itemViewModel)
+        {
+            ItemViewModel = itemViewModel ?? throw new ArgumentNullException(nameof(itemViewModel));
+        }
+    }
+}