+ PARTSET_EXPORT virtual bool isValid(const ModuleBase_ISelection* theSelection, ModuleBase_Operation* theOperation) const;
+};
+
+////////////// Attribute validators ////////////////
+
+
+/**
+* \ingroup Validators
+* A validator which checks that objects selected for feature attributes are different (not the same)
+*/
+class PartSet_DifferentObjectsValidator : public ModelAPI_AttributeValidator
+{
+ //! Validator possible error types
+ enum ErrorType {
+ EqualObjects,
+ EqualAttributes,
+ EqualShapes,
+ EmptyShapes
+ };
+ public:
+ //! Returns true if the attribute is good for the feature attribute
+ //! \param theAttribute an attribute
+ //! \param theArguments a list of arguments (names of attributes to check)
+ //! \param theError an output error string
+ virtual bool isValid(const AttributePtr& theAttribute,
+ const std::list<std::string>& theArguments,
+ std::string& theError) const;
+private:
+ //! Returns error message for the error type
+ //! \param theType a type of error
+ //! \param thEqualObjectInfo an
+ std::string errorMessage(const PartSet_DifferentObjectsValidator::ErrorType& theType,
+ const std::string& thEqualObject, const std::string& theFirstAttribute,
+ const std::string& theSecondAttribute) const;
+
+};
+
+/**
+* \ingroup Validators
+* A validator which checks that objects selected for feature attributes are different (not the same)
+*/
+class PartSet_SketchEntityValidator : public ModelAPI_AttributeValidator
+{
+ public:
+ //! Returns true if the attribute is good for the feature attribute
+ //! \param theAttribute an attribute
+ //! \param theArguments a list of arguments (names of attributes to check)
+ //! \param theError an output error string
+ virtual bool isValid(const AttributePtr& theAttribute,
+ const std::list<std::string>& theArguments,
+ std::string& theError) const;
+};
+
+/**\class PartSet_CoincidentAttr
+ * \ingroup Validators
+ * \brief Validator to check whether there is a coincident constraint between
+ * the attribute and attribute of argument.
+ */
+class PartSet_CoincidentAttr : public ModelAPI_AttributeValidator
+{
+ public:
+ //! returns true if attribute is valid
+ //! \param theAttribute the checked attribute
+ //! \param theArguments arguments of the attribute
+ //! \param theError an output error string
+ virtual bool isValid(const AttributePtr& theAttribute,
+ const std::list<std::string>& theArguments,
+ std::string& theError) const;