+ if ( SMESH::Filter_i* f = SMESH::DownCast< SMESH::Filter_i* >( myFilter ))
+ {
+ // make filter notify me about change of either a predicate or a base group
+ f->FindBaseObjects();
+
+ if ( f->ContainModifWaiter( this ) ||
+ this->ContainModifWaiter( f ))
+ {
+ SetFilter( SMESH::Filter::_nil() );
+ THROW_SALOME_CORBA_EXCEPTION( "Cyclic dependency between Groups on Filter",
+ SALOME::BAD_PARAM );
+ }
+ f->AddModifWaiter( this );
+ }
+ myFilter->SetMesh( SMESH::SMESH_Mesh::_nil() ); // to UnRegister() the mesh
+ }