port from perforce

intromat/Intromat/Actions/Network/AddConnectionAction.cs

@@ -0,0 +1,32 @@
+using DynamicData;
+using Intromat.Interfaces;
+using Intromat.ViewModels;
+using NodeNetwork.ViewModels;
+
+namespace Intromat.Actions.Network
+{
+    public class AddConnectionAction : IUndoItem
+    {
+        private readonly CodeGenNetworkViewModel _network;
+        private readonly ConnectionViewModel _connection;
+
+        public AddConnectionAction(DocumentViewModel document, CodeGenNetworkViewModel network, ConnectionViewModel connection)
+        {
+            File = document;
+            _network = network;
+            _connection = connection;
+        }
+
+        public void Redo()
+        {
+            _network.Connections.Add(_connection);
+        }
+
+        public void Undo()
+        {
+            _network.Connections.Remove(_connection);
+        }
+
+        public IFile File { get; }
+    }
+}