port from perforce

intromat/Intromat/Actions/Hierarchy/CreateFolderAction.cs

@@ -0,0 +1,34 @@
+using DynamicData;
+using Intromat.Interfaces;
+using Intromat.ViewModels;
+
+namespace Intromat.Actions.Hierarchy
+{
+    public class CreateFolderAction : IUndoItem
+    {
+        private readonly FolderViewModel _folder;
+        private readonly FolderViewModel _parent;
+
+        public CreateFolderAction(string name, ModuleViewModel module, FolderViewModel parent)
+        {
+            _folder = new FolderViewModel(module, parent, name);
+            _parent = parent;
+            File = module;
+        }
+
+        public IFile File { get; }
+
+        public void Redo()
+        {
+            _parent.Folders.Add(_folder);
+            _parent.IsExpanded = true;
+            _folder.IsSelected = true;
+        }
+
+        public void Undo()
+        {
+            _parent.Folders.Remove(_folder);
+            _parent.IsSelected = true;
+        }
+    }
+}