bluflame/intromat/Intromat/Actions/Hierarchy/DeleteFileAction.cs

using DynamicData;
using Intromat.Interfaces;
using Intromat.ViewModels;

namespace Intromat.Actions.Hierarchy
{
    public class DeleteFileAction : IUndoItem
    {
        private readonly FileViewModel _file;
        private readonly FolderViewModel _parent;

        public DeleteFileAction(FileViewModel file)
        {
            _parent = file.Parent;
            File = _parent.Module;
            _file = file;
        }

        public IFile File { get; }

        public void Redo()
        {
            _parent.Files.Remove(_file);
            _parent.IsSelected = true;
        }

        public void Undo()
        {
            _parent.Files.Add(_file);
            _file.IsSelected = true;
        }
    }
}