void (@NotNull BreadcrumbsPlacement placement) { if (myBreadcrumbs == null) return; setTopBreadcrumbs(placement == BreadcrumbsPlacement.TOP ? myBreadcrumbs : null); setBottomBreadcrumbs(placement == BreadcrumbsPlacement.BOTTOM ? myBreadcrumbs : null); myBreadcrumbs.setCrumbsShown(placement != BreadcrumbsPlacement.HIDDEN); validate(); repaint(); }