Edition of primitives is changed

Services/Primitives/IPrimitiveRepository.cs

@@ -0,0 +1,21 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using StructureHelper.Infrastructure.UI.DataContexts;
+using StructureHelperCommon.Models.NdmPrimitives;
+using StructureHelperCommon.Models.Shapes;
+using Point = StructureHelper.Infrastructure.UI.DataContexts.Point;
+using Rectangle = StructureHelper.Infrastructure.UI.DataContexts.Rectangle;
+
+namespace StructureHelper.Services.Primitives
+{
+    public interface IPrimitiveRepository
+    {
+        IEnumerable<PrimitiveBase> Primitives { get; }
+        void Add(PrimitiveBase primitive);
+        void Delete(PrimitiveBase primitive);
+        void Clear();
+    }
+}

Services/Primitives/PrimitiveRepository.cs

@@ -0,0 +1,36 @@
+using StructureHelper.Infrastructure.UI.DataContexts;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace StructureHelper.Services.Primitives
+{
+    public class PrimitiveRepository : IPrimitiveRepository
+    {
+        List<PrimitiveBase> primitives;
+
+        public IEnumerable<PrimitiveBase> Primitives { get => primitives; }
+
+        public PrimitiveRepository()
+        {
+            primitives = new List<PrimitiveBase>();
+        }
+
+        public void Add(PrimitiveBase primitive)
+        {
+            primitives.Add(primitive);
+        }
+
+        public void Clear()
+        {
+            primitives = new List<PrimitiveBase>();
+        }
+
+        public void Delete(PrimitiveBase primitive)
+        {
+            primitives.Remove(primitive);
+        }
+    }
+}