+ /// Signal is emitted after the apply enable state changed.
+ //void validationStateChanged(bool);
+
+ /// Signal is emitted after the model is modified. It is emitted for all active operations.
+ /// \param theFeatureKind a feature id
+ /// \param theState validity of the operation with the feature kind
+ //void nestedStateChanged(const std::string& theFeatureKind, const bool theState);
+
+ /// Signal is emitted after the current operation is filled with existing preselection.
+ void operationActivatedByPreselection();