Head material was added

Windows/ViewModels/Materials/HeadMaterialsViewModel.cs

@@ -0,0 +1,36 @@
+using StructureHelper.Infrastructure;
+using StructureHelper.Models.Materials;
+using System;
+using System.Collections;
+using System.Collections.Generic;
+using System.Collections.ObjectModel;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows.Input;
+
+namespace StructureHelper.Windows.ViewModels.Materials
+{
+    public class HeadMaterialsViewModel : ViewModelBase
+    {
+        IEnumerable<IHeadMaterial> headMaterials;
+
+        public ICommand AddHeadMaterial;
+        public ICommand CopyHeadMaterial;
+        public ICommand DeleteHeadMaterial;
+        public ICommand EditHeadMaterial;
+
+        public ObservableCollection<IHeadMaterial> HeadMaterials { get; private set; }
+        public IHeadMaterial SelectedMaterial { get; set; }
+
+        public HeadMaterialsViewModel(IEnumerable<IHeadMaterial> materials)
+        {
+            headMaterials = materials;
+            HeadMaterials = new ObservableCollection<IHeadMaterial>();
+            foreach (var material in headMaterials)
+            {
+                HeadMaterials.Add(material);
+            }
+        }
+    }
+}