Example #1
0
// check inheritance
QString BrowserNode::check_inherit(const BrowserNode * new_parent) const {
  Q3PtrList<BrowserNode> all_parents;
  Q3PtrList<BrowserNode> notyet = parents();

  if (notyet.findRef(new_parent) != -1)
    return TR("already generalize / realize");
  
  notyet.append(new_parent);
  
  do {
    BrowserNode * cl = notyet.getFirst();
    
    notyet.removeFirst();
    if (cl == this)
      return TR("can't have circular generalization / realization");
    if (all_parents.findRef(cl) == -1) {
      all_parents.append(cl);
      
      Q3PtrList<BrowserNode> grand_parents = cl->parents();
      
      for (cl = grand_parents.first(); cl; cl = grand_parents.next())
	if (notyet.findRef(cl) == -1)
	  notyet.append(cl);
    }
  } while (! notyet.isEmpty());
  
  return 0;
}