};
+/**\class SketchPlugin_NotFixed
+ * \ingroup Validators
+ * \brief Validator for the rigid constraint input.
+ *
+ * It just checks there is no rigid constraint for the current feature.
+ */
+class SketchPlugin_NotFixedValidator : public ModelAPI_AttributeValidator
+{
+ public:
+ //! returns true if attribute is not used in another rigid constraint
+ //! \param theAttribute the checked attribute
+ //! \param theArguments arguments of the attribute
+ virtual bool isValid(const AttributePtr& theAttribute,
+ const std::list<std::string>& theArguments) const;
+};
+
+/**\class SketchPlugin_EqualAttrValidator
+ * \ingroup Validators
+ * \brief Validator for the equal constraint input.
+ *
+ * It checks that attributes of the Equal constraint are correct.
+ */
+class SketchPlugin_EqualAttrValidator : public ModelAPI_AttributeValidator
+{
+ public:
+ //! returns true if attribute is valid
+ //! \param theAttribute the checked attribute
+ //! \param theArguments arguments of the attribute
+ virtual bool isValid(const AttributePtr& theAttribute,
+ const std::list<std::string>& theArguments) const;
+};
+
+/**\class SketchPlugin_MirrorAttrValidator
+ * \ingroup Validators
+ * \brief Validator for the mirror constraint input.
+ *
+ * It checks that attributes of the Mirror constraint are correct.
+ */
+class SketchPlugin_MirrorAttrValidator : public ModelAPI_AttributeValidator
+{
+ public:
+ //! returns true if attribute is valid
+ //! \param theAttribute the checked attribute
+ //! \param theArguments arguments of the attribute (not used)
+ virtual bool isValid(const AttributePtr& theAttribute,
+ const std::list<std::string>& theArguments) const;
+};
+
+
+/**\class SketchPlugin_CoincidenceAttrValidator
+ * \ingroup Validators
+ * \brief Validator for the coincidence constraint input.
+ *
+ * It checks that attributes of the Coincidence constraint are correct.
+ */
+class SketchPlugin_CoincidenceAttrValidator : public ModelAPI_AttributeValidator
+{
+ public:
+ //! returns true if attribute is valid
+ //! \param theAttribute the checked attribute
+ //! \param theArguments arguments of the attribute (not used)
+ virtual bool isValid(const AttributePtr& theAttribute,
+ const std::list<std::string>& theArguments) const;
+};
+
+
+/**\class SketchPlugin_CopyValidator
+ * \ingroup Validators
+ * \brief Validator for the constraints which create features.
+ *
+ * Applicable only for features, which creates another features. It verifies the produced
+ * features of current constraint don't become into the list of initial features
+ */
+class SketchPlugin_CopyValidator : public ModelAPI_AttributeValidator
+{
+ public:
+ //! returns true if attribute is valid
+ //! \param theAttribute the checked attribute
+ //! \param theArguments arguments of the attribute (not used)
+ virtual bool isValid(const AttributePtr& theAttribute,
+ const std::list<std::string>& theArguments) const;
+};
+
#endif
