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diff --git a/sw/inc/fmtfld.hxx b/sw/inc/fmtfld.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_SW_INC_FMTFLD_HXX
+#define INCLUDED_SW_INC_FMTFLD_HXX
+
+#include <cppuhelper/weakref.hxx>
+#include <svl/poolitem.hxx>
+#include <svl/SfxBroadcaster.hxx>
+#include <com/sun/star/text/XTextField.hpp>
+#include <unotools/weakref.hxx>
+
+#include "swdllapi.h"
+#include "swtypes.hxx"
+#include "calbck.hxx"
+#include "reffld.hxx"
+#include "nodeoffset.hxx"
+
+class SwField;
+class SwTextField;
+class SwView;
+class SwFieldType;
+class SwDDETable;
+class SwFormatField;
+class SwXTextField;
+class IDocumentRedlineAccess;
+
+namespace sw {
+    struct FindFormatForFieldHint final : SfxHint {
+        const SwField* m_pField;
+        SwFormatField*& m_rpFormat;
+        FindFormatForFieldHint(const SwField* pField, SwFormatField*& rpFormat)
+            : SfxHint(SfxHintId::SwFindFormatForField), m_pField(pField), m_rpFormat(rpFormat) {};
+    };
+    struct FindFormatForPostItIdHint final : SfxHint {
+        const sal_uInt32 m_nPostItId;
+        SwFormatField*& m_rpFormat;
+        FindFormatForPostItIdHint(const sal_uInt32 nPostItId, SwFormatField*& rpFormat)
+            : SfxHint(SfxHintId::SwFindFormatForPostItId), m_nPostItId(nPostItId), m_rpFormat(rpFormat) {};
+    };
+    struct CollectPostItsHint final : SfxHint {
+        std::vector<SwFormatField*>& m_rvFormatFields;
+        IDocumentRedlineAccess const& m_rIDRA;
+        const bool m_bHideRedlines;
+        CollectPostItsHint(std::vector<SwFormatField*>& rvFormatFields, IDocumentRedlineAccess const& rIDRA, bool bHideRedlines)
+            : SfxHint(SfxHintId::SwCollectPostIts),
+              m_rvFormatFields(rvFormatFields), m_rIDRA(rIDRA), m_bHideRedlines(bHideRedlines) {};
+    };
+    struct HasHiddenInformationNotesHint final : SfxHint {
+        bool& m_rbHasHiddenInformationNotes;
+        HasHiddenInformationNotesHint(bool& rbHasHiddenInformationNotes)
+            : SfxHint(SfxHintId::SwHasHiddenInformationNotes),
+              m_rbHasHiddenInformationNotes(rbHasHiddenInformationNotes) {};
+    };
+    struct GatherNodeIndexHint final : SfxHint {
+        std::vector<SwNodeOffset>& m_rvNodeIndex;
+        GatherNodeIndexHint(std::vector<SwNodeOffset>& rvNodeIndex)
+            : SfxHint(SfxHintId::SwGatherNodeIndex),
+              m_rvNodeIndex(rvNodeIndex) {};
+    };
+    struct GatherRefFieldsHint final : SfxHint {
+        std::vector<SwGetRefField*>& m_rvRFields;
+        const sal_uInt16 m_nType;
+        GatherRefFieldsHint(std::vector<SwGetRefField*>& rvRFields, const sal_uInt16 nType)
+            : SfxHint(SfxHintId::SwGatherRefFields),
+              m_rvRFields(rvRFields), m_nType(nType) {};
+    };
+    struct GatherFieldsHint final : SfxHint {
+        const bool m_bCollectOnlyInDocNodes;
+        std::vector<SwFormatField*>& m_rvFields;
+        GatherFieldsHint(std::vector<SwFormatField*>& rvFields, bool bCollectOnlyInDocNodes = true)
+            : SfxHint(SfxHintId::SwGatherFields),
+              m_bCollectOnlyInDocNodes(bCollectOnlyInDocNodes), m_rvFields(rvFields) {};
+    };
+    struct GatherDdeTablesHint final : SfxHint {
+        std::vector<SwDDETable*>& m_rvTables;
+        GatherDdeTablesHint(std::vector<SwDDETable*>& rvTables) : m_rvTables(rvTables) {};
+    };
+}
+
+
+/// SfxPoolItem subclass that is a wrapper around an SwField, i.e. one inserted field into paragraph
+/// text. Typically owned by an SwTextField.
+class SW_DLLPUBLIC SwFormatField final
+    : public SfxPoolItem
+    , public sw::BroadcastingModify
+    , public SfxBroadcaster
+{
+    friend void InitCore();
+    SwFormatField( sal_uInt16 nWhich ); // for default-Attribute
+
+    unotools::WeakReference<SwXTextField> m_wXTextField;
+
+    std::unique_ptr<SwField> mpField;
+    SwTextField* mpTextField; // the TextAttribute
+
+    virtual void SwClientNotify( const SwModify& rModify, const SfxHint& rHint ) override;
+
+public:
+
+    /// Single argument constructors shall be explicit.
+    explicit SwFormatField( const SwField &rField );
+
+    SwFormatField( const SwFormatField& rAttr );
+
+    virtual ~SwFormatField() override;
+
+    /// "Pure virtual methods" of SfxPoolItem.
+    virtual bool            operator==( const SfxPoolItem& ) const override;
+    virtual SwFormatField*  Clone( SfxItemPool* pPool = nullptr ) const override;
+
+    void InvalidateField();
+
+    const SwField* GetField() const
+    {
+        return mpField.get();
+    }
+    SwField* GetField()
+    {
+        return mpField.get();
+    }
+
+    /**
+       Sets current field.
+
+       @param pField          new field
+
+       @attention The current field will be destroyed before setting the new field.
+     */
+    void SetField( std::unique_ptr<SwField> pField );
+
+    const SwTextField* GetTextField() const
+    {
+        return mpTextField;
+    }
+    SwTextField* GetTextField()
+    {
+        return mpTextField;
+    }
+    void SetTextField( SwTextField& rTextField );
+    void ClearTextField();
+
+    void RegisterToFieldType( SwFieldType& );
+    bool IsFieldInDoc() const;
+    bool IsProtect() const;
+
+    SAL_DLLPRIVATE unotools::WeakReference<SwXTextField> const& GetXTextField() const
+            { return m_wXTextField; }
+    SAL_DLLPRIVATE void SetXTextField(rtl::Reference<SwXTextField> const& xTextField);
+
+    void dumpAsXml(xmlTextWriterPtr pWriter) const override;
+
+    void ForceUpdateTextNode();
+    void UpdateTextNode(const SfxHint& rHint);
+    void UpdateDocPos(const SwTwips nDocPos);
+};
+
+enum class SwFormatFieldHintWhich
+{
+    INSERTED   = 1,
+    REMOVED    = 2,
+    FOCUS      = 3,
+    CHANGED    = 4,
+    RESOLVED   = 5
+};
+
+class SW_DLLPUBLIC SwFormatFieldHint final : public SfxHint
+{
+    const SwFormatField*   m_pField;
+    SwFormatFieldHintWhich m_nWhich;
+    const SwView*     m_pView;
+
+public:
+    SwFormatFieldHint( const SwFormatField* pField, SwFormatFieldHintWhich nWhich, const SwView* pView = nullptr)
+        : m_pField(pField)
+        , m_nWhich(nWhich)
+        , m_pView(pView)
+    {}
+
+    const SwFormatField* GetField() const { return m_pField; }
+    SwFormatFieldHintWhich Which() const { return m_nWhich; }
+    const SwView* GetView() const { return m_pView; }
+};
+
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */