@Override
  protected LightToolWindow createContent(@NotNull DesignerEditorPanelFacade designer) {
    DesignerToolWindow toolWindowContent = new DesignerToolWindow(myProject);
    toolWindowContent.update((GuiEditor)designer);

    return createContent(designer,
                         toolWindowContent,
                         UIDesignerBundle.message("toolwindow.ui.designer.title"),
                         AllIcons.Toolwindows.ToolWindowUIDesigner,
                         toolWindowContent.getToolWindowPanel(),
                         toolWindowContent.getComponentTree(),
                         320,
                         null);
  }
@Override
  protected LightToolWindow createContent(@NotNull DesignerEditorPanelFacade designer)