TreeTableRenderingContext ttrc = (TreeTableRenderingContext) tContext;
if (ttrc.isFocusColumnVisible())
{
colData.setColumnIndex(physicalColumnIndex++,
ColumnData.SPECIAL_COLUMN_INDEX);
SpecialColumnRenderer focusRenderer = getFocusColumnRenderer();
UIComponent column = focusRenderer.getSpecialColumn();
delegateRenderer(context, arc, column,
getFacesBean(column), focusRenderer);
}
// render the object hierarchy column: