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diff --git a/include/svx/fmshell.hxx b/include/svx/fmshell.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_FMSHELL_HXX
+#define INCLUDED_SVX_FMSHELL_HXX
+
+// ***************************************************************************************************
+// ***************************************************************************************************
+// ***************************************************************************************************
+
+#include <memory>
+#include <rtl/ref.hxx>
+#include <sfx2/shell.hxx>
+#include <vcl/outdev.hxx>
+
+#include <svx/svxdllapi.h>
+#include <svx/ifaceids.hxx>
+#include <svl/hint.hxx>
+
+#include <com/sun/star/uno/Reference.hxx>
+
+class FmFormModel;
+class FmFormPage;
+class FmXFormShell;
+class FmFormView;
+class SdrView;
+class SdrUnoObj;
+class LinkParamNone;
+
+namespace com::sun::star::form {
+    class XForm;
+    namespace runtime {
+        class XFormController;
+    }
+}
+
+namespace com::sun::star::awt { class XControl; }
+namespace com::sun::star::awt { class XControlModel; }
+template <typename Arg, typename Ret> class Link;
+
+namespace svx
+{
+    class ISdrObjectFilter;
+}
+
+
+class SAL_WARN_UNUSED SVXCORE_DLLPUBLIC FmDesignModeChangedHint final : public SfxHint
+{
+    bool m_bDesignMode;
+
+public:
+    FmDesignModeChangedHint( bool bDesMode );
+    virtual ~FmDesignModeChangedHint() override;
+
+    bool GetDesignMode() const { return m_bDesignMode; }
+};
+
+class SVXCORE_DLLPUBLIC FmFormShell final : public SfxShell
+{
+    friend class FmFormView;
+    friend class FmXFormShell;
+
+    rtl::Reference<FmXFormShell> m_pImpl;
+    FmFormView*     m_pFormView;
+    FmFormModel*    m_pFormModel;
+
+    sal_uInt16  m_nLastSlot;
+    bool        m_bDesignMode : 1;
+    bool        m_bHasForms : 1;    // flag storing if the forms on a page exist,
+                                        // only for the DesignMode, see UIFeatureChanged!
+
+    // the marks of a FormView have changed...
+    void NotifyMarkListChanged(FmFormView*);
+        // (the FormView itself is not a broadcaster, therefore it can't always correctly notify the
+        // form explorer who is interested in the event)
+
+public:
+    SFX_DECL_INTERFACE(SVX_INTERFACE_FORM_SH)
+
+private:
+    /// SfxInterface initializer.
+    static void InitInterface_Impl();
+
+public:
+    FmFormShell(SfxViewShell* pParent, FmFormView* pView = nullptr);
+    virtual ~FmFormShell() override;
+
+    void Execute( SfxRequest& );
+    void GetState( SfxItemSet& );
+    virtual bool HasUIFeature(SfxShellFeature nFeature) const override;
+
+    void ExecuteTextAttribute( SfxRequest& );
+    void GetTextAttributeState( SfxItemSet& );
+
+    bool GetY2KState(sal_uInt16& nReturn);
+    void SetY2KState(sal_uInt16 n);
+
+    void SetView(FmFormView* pView);
+
+    FmFormView*  GetFormView() const { return m_pFormView; }
+    FmFormModel* GetFormModel() const { return m_pFormModel; }
+    FmFormPage*  GetCurPage() const;
+    FmXFormShell* GetImpl() const {return m_pImpl.get();};
+
+    bool PrepareClose(bool bUI = true);
+
+    bool        IsActiveControl() const;
+    void        ForgetActiveControl();
+    void        SetControlActivationHandler( const Link<LinkParamNone*,void>& _rHdl );
+
+    virtual void    Activate(bool bMDI) override;
+    virtual void    Deactivate(bool bMDI) override;
+
+    // helper methods for implementing XFormLayerAccess
+    SdrUnoObj* GetFormControl(
+        const css::uno::Reference< css::awt::XControlModel >& _rxModel,
+        const SdrView& _rView,
+        const OutputDevice& _rDevice,
+        css::uno::Reference< css::awt::XControl >& _out_rxControl
+    ) const;
+
+    static css::uno::Reference< css::form::runtime::XFormController > GetFormController(
+        const css::uno::Reference< css::form::XForm >& _rxForm,
+        const SdrView& _rView,
+        const OutputDevice& _rDevice
+    );
+
+    /** puts the focus into the document window, if current a form control has the focus. Otherwise, moves the focus
+        to the control belonging to the given SdrUnoObj.
+    */
+    void    ToggleControlFocus(
+        const SdrUnoObj& i_rNextCandidate,
+        const SdrView& i_rView,
+              OutputDevice& i_rDevice
+    ) const;
+
+    static ::std::unique_ptr< svx::ISdrObjectFilter >
+            CreateFocusableControlFilter(
+                const SdrView& i_rView,
+                const OutputDevice& i_rDevice
+            );
+
+    virtual bool IsDesignMode() const override { return m_bDesignMode; }
+    void         SetDesignMode( bool _bDesignMode );
+
+private:
+    void GetFormState(SfxItemSet &rSet, sal_uInt16 nWhich);
+
+    // is there a form on the current page?
+    void DetermineForms(bool bInvalidate);
+    void impl_setDesignMode( bool bDesign);
+};
+
+#endif // INCLUDED_SVX_FMSHELL_HXX
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */