The default control used for the Gantt chart detail node property is the property sheet from the ControlsFX open source project. It is used to display the properties of the Gantt chart itself and its subcontrols (timeline, dateline, eventline, graphics). It also shows the properties of all renderers registered with the controls. The screenshot below shows the property sheet as it presents itself when set as the detail node of the Gantt chart. It can then be made visible by calling GanttChart.setShowDetail(true).
When writing your own renderers you can override the getPropertySheetItems() method and add your own items to the list of items returned by the superclass.
