private void InsertControlToPropertiesView(Window window)
        {
            layersView   = new LayersView(editor);
            tilesetsView = new TilesetsView(editor, brushesViewModel, tilesetsViewModel);

            // Root of the window.
            Grid root = LogicalTreeHelper.FindLogicalNode(window, "root") as Grid;

            // Get root docking manager and view panel.
            DockingManager   rootDockingManager         = LogicalTreeHelper.FindLogicalNode(root, "dockingManager") as DockingManager;
            LayoutAnchorable propertiesLayoutAnchorable = rootDockingManager.FindName("propertiesView") as LayoutAnchorable;

            // Get vies docking manager.
            //DockingManager propertiesDockingManager = propertiesLayoutAnchorable.Content as DockingManager;
            //LayoutPanelControl propertiesLayoutPanel = propertiesDockingManager.LayoutRootPanel;

            StackPanel stackPanel = propertiesLayoutAnchorable.Content as StackPanel;

            // Insert new controls.
            stackPanel.Children.Add(layersView);
            stackPanel.Children.Add(tilesetsView);
        }