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diff --git a/fpicker/source/office/fpinteraction.hxx b/fpicker/source/office/fpinteraction.hxx
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+++ b/fpicker/source/office/fpinteraction.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 <cppuhelper/implbase.hxx>
+#include <com/sun/star/task/XInteractionHandler.hpp>
+
+
+namespace svt
+{
+
+
+    //= OFilePickerInteractionHandler
+
+    typedef ::cppu::WeakImplHelper <   css::task::XInteractionHandler
+                                    >   OFilePickerInteractionHandler_Base;
+
+    /** an InteractionHandler implementation which extends another handler with some customizability
+    */
+    class OFilePickerInteractionHandler final : public OFilePickerInteractionHandler_Base
+    {
+    public:
+        /** flags, which indicates special handled interactions
+            These values will be used combined as flags - so they must
+            in range [2^n]!
+         */
+        enum EInterceptedInteractions
+        {
+            E_NOINTERCEPTION = 0,
+            E_DOESNOTEXIST   = 1
+            // next values [2,4,8,16 ...]!
+        };
+
+    private:
+        css::uno::Reference< css::task::XInteractionHandler > m_xMaster;    // our master handler
+        css::uno::Any                                         m_aException; // the last handled request
+        bool                                                  m_bUsed;      // indicates using of this interaction handler instance
+        EInterceptedInteractions                              m_eInterceptions; // enable/disable interception of some special interactions
+
+    public:
+        explicit OFilePickerInteractionHandler( css::uno::Reference< css::task::XInteractionHandler > _xMaster );
+
+        // some generic functions
+        void     enableInterceptions( EInterceptedInteractions eInterceptions );
+        bool wasUsed            () const { return m_bUsed; }
+        void     resetUseState      ();
+        void     forgetRequest      ();
+
+        // functions to analyze last cached request
+        bool wasAccessDenied() const;
+
+    private:
+        // XInteractionHandler
+        virtual void SAL_CALL handle( const css::uno::Reference< css::task::XInteractionRequest >& _rxRequest ) override;
+
+        virtual ~OFilePickerInteractionHandler() override;
+    };
+
+
+}   // namespace svt
+
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */