public void mouseReleased(MouseEvent event) {
PropertySheetTable table = (PropertySheetTable) event.getComponent();
int row = table.rowAtPoint(event.getPoint());
int column = table.columnAtPoint(event.getPoint());
if (row != -1 && column == 0) {
// if we clicked on an Item, see if we clicked on its hotspot
Item item = table.getSheetModel().getPropertySheetElement(row);
int x = event.getX() - getIndent(table, item);
if (x > 0 && x < HOTSPOT_SIZE) item.toggle();
}
}
