+//================================================================================
+/*!
+ * \brief Retrieves the predicate from the filter
+ */
+//================================================================================
+
+SMESH_PredicatePtr SMESH_GroupOnFilter_i::GetPredicate( SMESH::Filter_ptr filter )
+{
+ SMESH_PredicatePtr predicate;
+
+ if ( SMESH::Filter_i* filt_i = SMESH::DownCast< SMESH::Filter_i* >( filter ))
+ if ( SMESH::Predicate_i* predic_i= filt_i->GetPredicate_i() )
+ predicate = predic_i->GetPredicate();
+
+ return predicate;
+}
+
+//================================================================================
+/*!
+ * \brief Sets the filter defining group contents
+ */
+//================================================================================
+
+void SMESH_GroupOnFilter_i::SetFilter(SMESH::Filter_ptr theFilter)
+{
+ if ( ! myFilter->_is_nil() )
+ myFilter->UnRegister();
+
+ myFilter = SMESH::Filter::_duplicate( theFilter );
+
+ if ( SMESHDS_GroupOnFilter* grDS = dynamic_cast< SMESHDS_GroupOnFilter*>( GetGroupDS() ))
+ grDS->SetPredicate( GetPredicate( myFilter ));
+
+ TPythonDump()<< _this() <<".SetFilter( "<<theFilter<<" )";
+
+ if ( myFilter )
+ {
+ myFilter->Register();
+ SMESH::DownCast< SMESH::Filter_i* >( myFilter )->AddWaiter( this );
+ }
+}
+
+//================================================================================
+/*!
+ * \brief Returns the filter defining group contents
+ */
+//================================================================================
+
+SMESH::Filter_ptr SMESH_GroupOnFilter_i::GetFilter()
+{
+ SMESH::Filter_var f = myFilter;
+ TPythonDump() << f << " = " << _this() << ".GetFilter()";
+ return f._retn();
+}
+
+#define SEPAR '^'
+
+//================================================================================
+/*!
+ * \brief Return a string to be used to store group definition in the study
+ */
+//================================================================================
+
+std::string SMESH_GroupOnFilter_i::FilterToString() const
+{
+ SMESH_Comment result;
+ SMESH::Filter::Criteria_var criteria;
+ if ( !myFilter->_is_nil() && myFilter->GetCriteria( criteria.out() ))
+ {
+ result << criteria->length() << SEPAR;
+ for ( unsigned i = 0; i < criteria->length(); ++i )
+ {
+ // write FunctorType as string but not as number to assure correct
+ // persistence if enum FunctorType is modified by insertion in the middle
+ SMESH::Filter::Criterion& crit = criteria[ i ];
+ result << SMESH::FunctorTypeToString( SMESH::FunctorType( crit.Type )) << SEPAR;
+ result << SMESH::FunctorTypeToString( SMESH::FunctorType( crit.Compare )) << SEPAR;
+ result << crit.Threshold << SEPAR;
+ result << crit.ThresholdStr << SEPAR;
+ result << crit.ThresholdID << SEPAR;
+ result << SMESH::FunctorTypeToString( SMESH::FunctorType( crit.UnaryOp )) << SEPAR;
+ result << SMESH::FunctorTypeToString( SMESH::FunctorType( crit.BinaryOp ))<< SEPAR;
+ result << crit.Tolerance << SEPAR;
+ result << crit.TypeOfElement << SEPAR;
+ result << crit.Precision << SEPAR;
+ }
+ }
+ return result;
+}
+
+//================================================================================
+/*!
+ * \brief Restore the filter by the persistent string
+ */
+//================================================================================
+
+SMESH::Filter_ptr SMESH_GroupOnFilter_i::StringToFilter(const std::string& thePersistStr )
+{
+ SMESH::Filter_var filter;
+
+ // divide thePersistStr into sub-strings
+ std::vector< std::string > strVec;
+ std::string::size_type from = 0, to;
+ while ( from < thePersistStr.size() )
+ {
+ to = thePersistStr.find( SEPAR, from );
+ if ( to == std::string::npos )
+ break;
+ strVec.push_back( thePersistStr.substr( from, to-from ));
+ from = to+1;
+ }
+ if ( strVec.empty() || strVec[0] == "0" )
+ return filter._retn();
+#undef SEPAR
+
+ // create Criteria
+ int nbCrit = atoi( strVec[0].c_str() );
+ SMESH::Filter::Criteria_var criteria = new SMESH::Filter::Criteria;
+ criteria->length( nbCrit );
+ int nbStrPerCrit = ( strVec.size() - 1 ) / nbCrit;
+ for ( int i = 0; i < nbCrit; ++i )
+ {
+ SMESH::Filter::Criterion& crit = criteria[ i ];
+ int iStr = 1 + i * nbStrPerCrit;
+ crit.Type = SMESH::StringToFunctorType( strVec[ iStr++ ].c_str() );
+ crit.Compare = SMESH::StringToFunctorType( strVec[ iStr++ ].c_str() );
+ crit.Threshold = atof( strVec[ iStr++ ].c_str() );
+ crit.ThresholdStr = strVec[ iStr++ ].c_str();
+ crit.ThresholdID = strVec[ iStr++ ].c_str();
+ crit.UnaryOp = SMESH::StringToFunctorType( strVec[ iStr++ ].c_str() );
+ crit.BinaryOp = SMESH::StringToFunctorType( strVec[ iStr++ ].c_str() );
+ crit.Tolerance = atof( strVec[ iStr++ ].c_str() );
+ crit.TypeOfElement= SMESH::ElementType( atoi( strVec[ iStr++ ].c_str() ));
+ crit.Precision = atoi( strVec[ iStr++ ].c_str() );
+ }
+
+ // create a filter
+ TPythonDump pd;
+ SMESH::FilterManager_i* aFilterMgr = new SMESH::FilterManager_i();
+ filter = aFilterMgr->CreateFilter();
+ filter->SetCriteria( criteria.inout() );
+
+ aFilterMgr->UnRegister();
+
+ pd << ""; // to avoid optimizing pd out
+
+ return filter._retn();
+}
+
+SMESH_GroupOnFilter_i::~SMESH_GroupOnFilter_i()
+{
+ if ( ! myFilter->_is_nil() )
+ {
+ SMESH::DownCast< SMESH::Filter_i* >( myFilter )->RemoveWaiter( this );
+ myFilter->UnRegister();
+ }
+}
+
+void SMESH_GroupOnFilter_i::PredicateChanged()
+{
+ if ( SMESHDS_GroupOnFilter* grDS = dynamic_cast< SMESHDS_GroupOnFilter*>( GetGroupDS() ))
+ grDS->SetPredicate( GetPredicate( myFilter ));
+}