facesContext, UICalendar.COMPONENT_TYPE, RendererTypes.CALENDAR, "calendar");
box.getChildren().add(calendar);
// fixme: should work automatically from the layout manager
final Measure width = getResourceManager().getThemeMeasure(facesContext, calendar, "minimumWidth");
layoutOfBox.setColumns(width.serialize());
// add time input
final UIPanel timePanel = (UIPanel) CreateComponentUtils.createComponent(
facesContext, UIPanel.COMPONENT_TYPE, RendererTypes.PANEL, "timePanel");
box.getChildren().add(timePanel);