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diff --git a/extensions/source/propctrlr/xsdvalidationhelper.hxx b/extensions/source/propctrlr/xsdvalidationhelper.hxx
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+++ b/extensions/source/propctrlr/xsdvalidationhelper.hxx
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+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#pragma once
+
+#include "eformshelper.hxx"
+#include "xsddatatypes.hxx"
+
+#include <com/sun/star/xsd/XDataType.hpp>
+#include <com/sun/star/beans/XPropertySet.hpp>
+#include <rtl/ref.hxx>
+
+
+namespace pcr
+{
+
+
+    class XSDDataType;
+
+    //= XSDValidationHelper
+
+    class XSDValidationHelper : public EFormsHelper
+    {
+    private:
+        bool    m_bInspectingFormattedField;
+    public:
+        bool    isInspectingFormattedField() const { return m_bInspectingFormattedField; }
+
+    public:
+        XSDValidationHelper(
+            ::osl::Mutex& _rMutex,
+            const css::uno::Reference< css::beans::XPropertySet >& _rxIntrospectee,
+            const css::uno::Reference< css::frame::XModel >& _rxContextDocument
+        );
+
+        /** retrieves the names of all XForms models in the document the control lives in
+        */
+        void    getAvailableDataTypeNames( std::vector< OUString >& /* [out] */ _rNames ) const;
+
+        /** retrieves a particular data type given by name
+        */
+        ::rtl::Reference< XSDDataType >
+                getDataTypeByName( const OUString& _rName ) const;
+
+        /** retrieves the DataType instance which the control model is currently validated against
+
+            If there is a binding set at our control model, which at the same time acts as validator,
+            and if this validator is bound to an XDataType, then this data type is retrieved here.
+        */
+        ::rtl::Reference< XSDDataType >
+                getValidatingDataType( ) const;
+
+        /** retrieves the name of the data type which the control model is currently validated against
+
+            @seealso getValidatingDataType
+        */
+        OUString
+                getValidatingDataTypeName( ) const;
+
+        /** binds the validator to a new data type
+
+            To be called with an active binding only.
+        */
+        void    setValidatingDataTypeByName( const OUString& _rName ) const;
+
+        /** removes the data type given by name from the data type repository
+        */
+        bool    removeDataTypeFromRepository( const OUString& _rName ) const;
+
+        /** creates a new data type, which is a clone of an existing data type
+        */
+        bool    cloneDataType( const ::rtl::Reference< XSDDataType >& _pDataType, const OUString& _rNewName ) const;
+
+        /** retrieves the name of the basic data type which has the given class
+        */
+        OUString
+                getBasicTypeNameForClass( sal_Int16 _eClass ) const;
+
+        /** copy a data type from one model to another
+
+            If a data type with the given name already exists in the target model, then nothing
+            happens. In particular, the facets of the data type are not copied.
+        */
+        void    copyDataType( const OUString& _rFromModel, const OUString& _rToModel,
+                    const OUString& _rDataTypeName ) const;
+
+        /** finds (and sets) a default format for the formatted field we're inspecting,
+            according to the current data type the control value is evaluated against
+        */
+        void findDefaultFormatForIntrospectee();
+
+    private:
+        /** retrieves the data type repository associated with the current model
+        */
+        css::uno::Reference< css::xforms::XDataTypeRepository >
+                getDataTypeRepository() const;
+
+        /** retrieves the data type repository associated with any model
+        */
+        css::uno::Reference< css::xforms::XDataTypeRepository >
+                getDataTypeRepository( const OUString& _rModelName ) const;
+
+        /** retrieves the data type object for the given name
+        */
+        css::uno::Reference< css::xsd::XDataType >
+            getDataType( const OUString& _rName ) const;
+
+        /** retrieves the name of the basic data type which has the given class, in the given repository
+        */
+        static OUString
+                getBasicTypeNameForClass(
+                    sal_Int16 _nClass,
+                    const css::uno::Reference< css::xforms::XDataTypeRepository >& _rxRepository
+                );
+    };
+
+
+} // namespace pcr
+
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */