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diff --git a/svx/source/inc/fmobj.hxx b/svx/source/inc/fmobj.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_SOURCE_INC_FMOBJ_HXX
+#define INCLUDED_SVX_SOURCE_INC_FMOBJ_HXX
+
+#include <config_options.h>
+#include <svx/svdouno.hxx>
+#include <com/sun/star/container/XIndexContainer.hpp>
+#include <com/sun/star/form/XForms.hpp>
+#include <com/sun/star/script/ScriptEventDescriptor.hpp>
+
+
+// FmFormObj
+
+class UNLESS_MERGELIBS(SVXCORE_DLLPUBLIC) FmFormObj : public SdrUnoObj
+{
+    FmFormObj( const FmFormObj& ) = delete;
+
+    css::uno::Sequence< css::script::ScriptEventDescriptor >  aEvts;  // events of the object
+    css::uno::Sequence< css::script::ScriptEventDescriptor>   m_aEventsHistory;
+                // valid if and only if m_pEnvironmentHistory != NULL, this are the events which we're set when
+                // m_pEnvironmentHistory was created
+
+    // information for the control environment is only maintained if an object is not in an
+    // object list
+    css::uno::Reference< css::container::XIndexContainer>     m_xParent;
+    css::uno::Reference< css::form::XForms >                  m_xEnvironmentHistory;
+    sal_Int32           m_nPos;
+
+    VclPtr<OutputDevice>   m_pLastKnownRefDevice;
+                            // the last ref device we know, as set at the model
+                            // only to be used for comparison with the current ref device!
+
+protected:
+    // protected destructor
+    SAL_DLLPRIVATE virtual ~FmFormObj() override;
+
+public:
+    FmFormObj(
+        SdrModel& rSdrModel,
+        const OUString& rModelName);
+    FmFormObj(SdrModel& rSdrModel);
+
+    SAL_DLLPRIVATE const css::uno::Reference< css::container::XIndexContainer>&
+        GetOriginalParent() const { return m_xParent; }
+    SAL_DLLPRIVATE const css::uno::Sequence< css::script::ScriptEventDescriptor >&
+        GetOriginalEvents() const { return aEvts; }
+    SAL_DLLPRIVATE sal_Int32
+        GetOriginalIndex() const { return m_nPos; }
+
+    SAL_DLLPRIVATE void SetObjEnv(
+            const css::uno::Reference< css::container::XIndexContainer>& xForm,
+            const sal_Int32 nIdx,
+            const css::uno::Sequence< css::script::ScriptEventDescriptor >& rEvts );
+    SAL_DLLPRIVATE void ClearObjEnv();
+
+public:
+    // react on page change
+    virtual void handlePageChange(SdrPage* pOldPage, SdrPage* pNewPage) override;
+
+    SAL_DLLPRIVATE virtual SdrInventor GetObjInventor() const override;
+    SAL_DLLPRIVATE virtual sal_uInt16 GetObjIdentifier() const override;
+    SAL_DLLPRIVATE virtual void NbcReformatText() override;
+
+    SAL_DLLPRIVATE virtual FmFormObj* CloneSdrObject(SdrModel& rTargetModel) const override;
+    SAL_DLLPRIVATE FmFormObj& operator= (const FmFormObj& rObj);
+
+    SAL_DLLPRIVATE void clonedFrom(const FmFormObj* _pSource);
+
+    SAL_DLLPRIVATE static css::uno::Reference< css::uno::XInterface> ensureModelEnv(
+                  const css::uno::Reference< css::uno::XInterface>& _rSourceContainer,
+                  const css::uno::Reference< css::form::XForms>& _rTopLevelDestContainer);
+
+    /** returns the FmFormObj behind the given SdrObject
+
+        In case the SdrObject *is* a FmFormObject, this is a simple cast. In case the SdrObject
+        is a virtual object whose referenced object is a FmFormObj, then this referenced
+        object is returned. In all other cases, NULL is returned.
+    */
+    SAL_DLLPRIVATE static       FmFormObj* GetFormObject( SdrObject* _pSdrObject );
+    SAL_DLLPRIVATE static const FmFormObj* GetFormObject( const SdrObject* _pSdrObject );
+
+    SAL_DLLPRIVATE virtual void SetUnoControlModel( const css::uno::Reference< css::awt::XControlModel >& _rxModel ) override;
+
+protected:
+    SAL_DLLPRIVATE virtual bool        EndCreate( SdrDragStat& rStat, SdrCreateCmd eCmd ) override;
+    SAL_DLLPRIVATE virtual void        BrkCreate( SdrDragStat& rStat ) override;
+
+private:
+    /** isolates the control model from its form component hierarchy, i.e. removes it from
+        its parent.
+    */
+    SAL_DLLPRIVATE void    impl_isolateControlModel_nothrow();
+
+    /** forwards the reference device of our SdrModel to the control model
+    */
+    SAL_DLLPRIVATE void    impl_checkRefDevice_nothrow( bool _force = false );
+};
+
+
+#endif // _FM_FMOBJ_HXX
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */