port from perforce

intromat/Intromat/Actions/Hierarchy/CreateFileAction.cs

@@ -0,0 +1,35 @@
+using System;
+using DynamicData;
+using Intromat.Interfaces;
+using Intromat.ViewModels;
+
+namespace Intromat.Actions.Hierarchy
+{
+    public class CreateFileAction : IUndoItem
+    {
+        private readonly FileViewModel _file;
+        private readonly FolderViewModel _parent;
+
+        public CreateFileAction(MainViewModel mainVm, FileViewModel file, ModuleViewModel module, FolderViewModel parent)
+        {
+            _file = file;
+            _parent = parent;
+            File = module;
+        }
+
+        public IFile File { get; }
+
+        public void Redo()
+        {
+            _parent.Files.Add(_file);
+            _parent.IsExpanded = true;
+            _file.IsSelected = true;
+        }
+
+        public void Undo()
+        {
+            _parent.Files.Remove(_file);
+            _parent.IsSelected = true;
+        }
+    }
+}