// Doesn't allow adding of selected objects to a new
// blocking region
enableAddBlockingRegion(false);
}
// Resets parent for this cell
cell.resetParent();
}
// Avoid insertion of a blocking region in an other
else if (cell2 instanceof BlockingRegion) {
BlockingRegion region = (BlockingRegion) cell2;
if (region.getParent() != null) {