+/**
+ * \class ExchangePlugin_FormatValidator
+ * \ingroup Validators
+ * \brief Validator for the imported formats checking
+ *
+ * The configuration file of import/export features contains the information
+ * about which formats are supported and the extension of the associated files.
+ * This validator filters out files that are out of this description.
+ */
+class ExchangePlugin_FormatValidator : public ModelAPI_AttributeValidator
+{
+ /**
+ * Parses input arguments "BREP:BREPImport", "STEP|STP:STEPImport"
+ * into list of file formats "BREP","STEP","STP"
+ * and list of corresponding plugins: "BREPImport", "STEPImport"
+ */
+ static bool parseFormats(const std::list<std::string>& theArguments,
+ std::list<std::string>& outFormats);
+public:
+ /**
+ * Returns true is the file-name attribute correctly corresponds to the set of
+ * allowed formats.
+ */
+ virtual bool isValid(const AttributePtr& theAttribute,
+ const std::list<std::string>& theArguments,
+ Events_InfoMessage& theError) const;
+};
+
+/**
+ * \class ExchangePlugin_ImportFormatValidator
+ * \ingroup Validators
+ * \brief Validator for the import format.
+ */
+class ExchangePlugin_ImportFormatValidator : public ExchangePlugin_FormatValidator
+{
+
+};
+
+/**
+ * \class ExchangePlugin_ExportFormatValidator
+ * \ingroup Validators
+ * \brief Validator for the export format.
+ */
+class ExchangePlugin_ExportFormatValidator : public ExchangePlugin_FormatValidator