+/// \brief A validator for extrusion direction attribute. Allows it to be empty if base objects are
+/// planar and do not contain vertices and edges.
+class FeaturesPlugin_ValidatorExtrusionDir: public ModelAPI_FeatureValidator
+{
+public:
+ //! \return true if attribute listed in the parameter arguments are planar.
+ //! \param[in] theFeature the checked feature.
+ //! \param[in] theArguments arguments of the attribute.
+ //! \param[out] theError error message.
+ virtual bool isValid(const std::shared_ptr<ModelAPI_Feature>& theFeature,
+ const std::list<std::string>& theArguments,
+ Events_InfoMessage& theError) const;
+
+private:
+ bool isShapesCanBeEmpty(const AttributePtr& theAttribute,
+ Events_InfoMessage& theError) const;
+};
+
+/// \class FeaturesPlugin_ValidatorBooleanSelection
+/// \ingroup Validators
+/// \brief Validates selection for boolean operation.
+class FeaturesPlugin_ValidatorBooleanSelection: public ModelAPI_AttributeValidator
+{
+public:
+ /// \return True if the attribute is valid. It checks whether the selection
+ /// is acceptable for boolean operation.
+ /// \param[in] theAttribute an attribute to check.
+ /// \param[in] theArguments a filter parameters.
+ /// \param[out] theError error message.
+ virtual bool isValid(const AttributePtr& theAttribute,
+ const std::list<std::string>& theArguments,
+ Events_InfoMessage& theError) const;
+};
+
+/// \class FeaturesPlugin_ValidatorFilletSelection
+/// \ingroup Validators
+/// \brief Validates selection for fillet operation.
+class FeaturesPlugin_ValidatorFilletSelection: public ModelAPI_AttributeValidator
+{
+public:
+ /// \return True if the attribute is valid. It checks whether the selection
+ /// is acceptable for boolean operation.
+ /// \param[in] theAttribute an attribute to check.
+ /// \param[in] theArguments a filter parameters.
+ /// \param[out] theError error message.
+ virtual bool isValid(const AttributePtr& theAttribute,
+ const std::list<std::string>& theArguments,
+ Events_InfoMessage& theError) const;
+};
+
+/// \class FeaturesPlugin_ValidatorPartitionSelection
+/// \ingroup Validators
+/// \brief Validates selection for partition.
+class FeaturesPlugin_ValidatorPartitionSelection: public ModelAPI_AttributeValidator
+{
+public:
+ /// \return True if the attribute is valid. It checks whether the selection
+ /// is acceptable for operation.
+ /// \param[in] theAttribute an attribute to check.
+ /// \param[in] theArguments a filter parameters.
+ /// \param[out] theError error message.
+ virtual bool isValid(const AttributePtr& theAttribute,
+ const std::list<std::string>& theArguments,
+ Events_InfoMessage& theError) const;
+};
+
+/// \class FeaturesPlugin_ValidatorRemoveSubShapesSelection
+/// \ingroup Validators
+/// \brief Validates selection for "Remove Sub-Shapes" feature.
+class FeaturesPlugin_ValidatorRemoveSubShapesSelection: public ModelAPI_AttributeValidator
+{
+public:
+ /// \return True if the attribute is valid. It checks whether the selection
+ /// is acceptable for operation.
+ /// \param[in] theAttribute an attribute to check.
+ /// \param[in] theArguments a filter parameters.
+ /// \param[out] theError error message.
+ virtual bool isValid(const AttributePtr& theAttribute,
+ const std::list<std::string>& theArguments,
+ Events_InfoMessage& theError) const;
+};
+
+/// \class FeaturesPlugin_ValidatorRemoveSubShapesResult
+/// \ingroup Validators
+/// \brief Validator for the Remove Sub-Shapes feature.
+class FeaturesPlugin_ValidatorRemoveSubShapesResult: public ModelAPI_FeatureValidator
+{
+ public:
+ //! \return true if result is valid shape.
+ //! \param theFeature the checked feature
+ //! \param theArguments arguments of the feature (not used)
+ //! \param theError error message
+ virtual bool isValid(const std::shared_ptr<ModelAPI_Feature>& theFeature,
+ const std::list<std::string>& theArguments,
+ Events_InfoMessage& theError) const;
+};
+
+/// \class FeaturesPlugin_ValidatorUnionSelection
+/// \ingroup Validators
+/// \brief Validates selection for "Union" feature.
+class FeaturesPlugin_ValidatorUnionSelection: public ModelAPI_AttributeValidator