public void OnDirectoryUpdated(object sender, DirectoryStatusWasUpdatedEventArgs args)
        {
            InitializeTreeStore ();

            DisplayAsRootFolder (args.DirectoryThatChanged);

            treeview.ExpandAll ();
        }
    private void OnDirectoryLoaded(object sender, DirectoryStatusWasUpdatedEventArgs args)
    {
        loadedDirectoryLabel.Text = args.DirectoryThatChanged.Path;

        refreshAction.Sensitive = true;
    }