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diff --git a/include/svx/shapepropertynotifier.hxx b/include/svx/shapepropertynotifier.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 .
+ */
+
+#ifndef INCLUDED_SVX_SHAPEPROPERTYNOTIFIER_HXX
+#define INCLUDED_SVX_SHAPEPROPERTYNOTIFIER_HXX
+
+#include <config_options.h>
+#include <svx/svxdllapi.h>
+#include <svx/shapeproperty.hxx>
+#include <rtl/ustring.hxx>
+
+#include <memory>
+
+namespace com::sun::star::beans { class XPropertyChangeListener; }
+namespace com::sun::star::uno { class Any; }
+namespace com::sun::star::uno { template <typename > class Reference; }
+namespace osl { class Mutex; }
+
+namespace cppu
+{
+    class OWeakObject;
+}
+
+
+namespace svx
+{
+
+
+    //= IPropertyValueProvider
+
+    /** a provider for a property value
+    */
+    class SVXCORE_DLLPUBLIC IPropertyValueProvider
+    {
+    public:
+        /** returns the name of the property which this provider is responsible for
+        */
+        virtual OUString getPropertyName() const = 0;
+
+        /** returns the current value of the property which the provider is responsible for
+        */
+        virtual void getCurrentValue( css::uno::Any& _out_rValue ) const = 0;
+
+        virtual ~IPropertyValueProvider();
+    };
+
+    //= PropertyValueProvider
+
+    /** default implementation of an IPropertyValueProvider
+
+        This default implementation queries the object which it is constructed with for the XPropertySet interface,
+        and calls the getPropertyValue method.
+    */
+    class SVXCORE_DLLPUBLIC PropertyValueProvider   :public IPropertyValueProvider
+    {
+    public:
+        PropertyValueProvider( ::cppu::OWeakObject& _rContext, const char* _pAsciiPropertyName )
+            :m_rContext( _rContext )
+            ,m_sPropertyName( OUString::createFromAscii( _pAsciiPropertyName ) )
+        {
+        }
+
+        virtual OUString getPropertyName() const override;
+        virtual void getCurrentValue( css::uno::Any& _out_rValue ) const override;
+
+    protected:
+        ::cppu::OWeakObject&    getContext() const { return m_rContext; }
+        PropertyValueProvider(const PropertyValueProvider&) = delete;
+        PropertyValueProvider& operator=(const PropertyValueProvider&) = delete;
+
+    private:
+        ::cppu::OWeakObject&    m_rContext;
+        const OUString   m_sPropertyName;
+    };
+
+
+    //= PropertyChangeNotifier
+
+    struct PropertyChangeNotifier_Data;
+
+    /** helper class for notifying XPropertyChangeListeners
+
+        The class is intended to be held as member of the class which does the property change broadcasting.
+    */
+    class SVXCORE_DLLPUBLIC PropertyChangeNotifier
+    {
+    public:
+        /** constructs a notifier instance
+
+            @param _rOwner
+                the owner instance of the notifier. Will be used as css.lang.EventObject.Source when
+                notifying events.
+        */
+        PropertyChangeNotifier( ::cppu::OWeakObject& _rOwner, ::osl::Mutex& _rMutex );
+        ~PropertyChangeNotifier();
+
+        // listener maintenance
+        void addPropertyChangeListener( const OUString& _rPropertyName, const css::uno::Reference< css::beans::XPropertyChangeListener >& _rxListener );
+        void removePropertyChangeListener( const OUString& _rPropertyName, const css::uno::Reference< css::beans::XPropertyChangeListener >& _rxListener );
+
+        /** registers an IPropertyValueProvider
+        */
+        void    registerProvider( const ShapeProperty _eProperty, const std::shared_ptr<IPropertyValueProvider>& _rProvider );
+
+        /** notifies changes in the given property to all registered listeners
+
+            If no property value provider for the given property ID is registered, this is worth an assertion in a
+            non-product build, and otherwise ignored.
+        */
+        void    notifyPropertyChange( const ShapeProperty _eProperty ) const;
+
+        /** is called to dispose the instance
+        */
+        void    disposing();
+
+    private:
+        PropertyChangeNotifier(const PropertyChangeNotifier&) = delete;
+        PropertyChangeNotifier& operator=(const PropertyChangeNotifier&) = delete;
+
+        std::unique_ptr< PropertyChangeNotifier_Data >  m_xData;
+    };
+
+
+}
+
+
+#endif // INCLUDED_SVX_SHAPEPROPERTYNOTIFIER_HXX
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */