/* -*- 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_SOURCE_CORE_INC_FRAME_HXX
#define INCLUDED_SW_SOURCE_CORE_INC_FRAME_HXX

#include <drawinglayer/primitive2d/baseprimitive2d.hxx>
#include <drawinglayer/processor2d/baseprocessor2d.hxx>
#include <editeng/borderline.hxx>
#include "swtypes.hxx"
#include "swrect.hxx"
#include "calbck.hxx"
#include <svl/SfxBroadcaster.hxx>
#include <o3tl/typed_flags_set.hxx>
#include "IDocumentDrawModelAccess.hxx"

#include <com/sun/star/style/TabStop.hpp>

class SwLayoutFrame;
class SwRootFrame;
class SwPageFrame;
class SwFlyFrame;
class SwSectionFrame;
class SwFootnoteFrame;
class SwFootnoteBossFrame;
class SwTabFrame;
class SwRowFrame;
class SwFlowFrame;
class SwContentFrame;
class SfxPoolItem;
class SwAttrSet;
class Color;
class SwBorderAttrs;
class SwCache;
class SvxBrushItem;
class SwSelectionList;
struct SwPosition;
struct SwCursorMoveState;
class SwFormat;
class SwPrintData;
class SwSortedObjs;
class SwAnchoredObject;
typedef struct _xmlTextWriter *xmlTextWriterPtr;

// Each FrameType is represented here as a bit.
// The bits must be set in a way that it can be determined with masking of
// which kind of FrameType an instance is _and_ from what classes it was derived.
// Each frame has in its base class a member that must be set by the
// constructors accordingly.
enum class SwFrameType
{
    None        = 0x0000,
    Root        = 0x0001,
    Page        = 0x0002,
    Column      = 0x0004,
    Header      = 0x0008,
    Footer      = 0x0010,
    FtnCont     = 0x0020,
    Ftn         = 0x0040,
    Body        = 0x0080,
    Fly         = 0x0100,
    Section     = 0x0200,
//  UNUSED      0x0400
    Tab         = 0x0800,
    Row         = 0x1000,
    Cell        = 0x2000,
    Txt         = 0x4000,
    NoTxt       = 0x8000,
};

namespace o3tl
{
    template<> struct typed_flags<SwFrameType> : is_typed_flags<SwFrameType, 0xfbff> {};
};

// for internal use some common combinations
#define FRM_LAYOUT      SwFrameType(0x3bFF)
#define FRM_ALL         SwFrameType(0xfbff)
#define FRM_CNTNT       (SwFrameType::Txt | SwFrameType::NoTxt)
#define FRM_FTNBOSS     (SwFrameType::Page | SwFrameType::Column)
#define FRM_ACCESSIBLE  (SwFrameType::Root | SwFrameType::Page | SwFrameType::Header | SwFrameType::Footer | SwFrameType::Ftn | SwFrameType::Fly | SwFrameType::Tab | SwFrameType::Cell | SwFrameType::Txt)
#define FRM_NEIGHBOUR   (SwFrameType::Column | SwFrameType::Cell)
#define FRM_NOTE_VERT   (SwFrameType::FtnCont | SwFrameType::Ftn | SwFrameType::Section | SwFrameType::Tab | SwFrameType::Row | SwFrameType::Cell | SwFrameType::Txt)
#define FRM_HEADFOOT    (SwFrameType::Header | SwFrameType::Footer)
#define FRM_BODYFTNC    (SwFrameType::FtnCont | SwFrameType::Body)

// for GetNextLeaf/GetPrevLeaf.
enum MakePageType
{
    MAKEPAGE_NONE,      // do not create page/footnote
    MAKEPAGE_APPEND,    // only append page if needed
    MAKEPAGE_INSERT,    // add or append page if needed
    MAKEPAGE_FTN,       // add footnote if needed
    MAKEPAGE_NOSECTION  // Don't create section frames
};

//UUUU
namespace drawinglayer { namespace attribute {
    class SdrAllFillAttributesHelper;
    typedef std::shared_ptr< SdrAllFillAttributesHelper > SdrAllFillAttributesHelperPtr;
}}

/**
 * Base class of the Writer layout elements.
 *
 * This includes not only fly frames, but everything down to the paragraph
 * level: pages, headers, footers, etc. (Inside a paragraph SwLinePortion
 * instances are used.)
 */
class SW_DLLPUBLIC SwFrame: public SwClient, public SfxBroadcaster
{
    // the hidden Frame
    friend class SwFlowFrame;
    friend class SwLayoutFrame;
    friend class SwLooping;

    // voids lower during creation of a column
    friend SwFrame *SaveContent( SwLayoutFrame *, SwFrame* pStart );
    friend void   RestoreContent( SwFrame *, SwLayoutFrame *, SwFrame *pSibling );

    // for validating a mistakenly invalidated one in SwContentFrame::MakeAll
    friend void ValidateSz( SwFrame *pFrame );
    // implemented in text/txtftn.cxx, prevents Footnote oscillation
    friend void ValidateText( SwFrame *pFrame );

    friend void MakeNxt( SwFrame *pFrame, SwFrame *pNxt );

    // cache for (border) attributes
    static SwCache *mpCache;

    bool mbIfAccTableShouldDisposing;
    bool mbInDtor;

    // #i65250#
    // frame ID is now in general available - used for layout loop control
    static sal_uInt32 mnLastFrameId;
    const  sal_uInt32 mnFrameId;

    SwRootFrame   *mpRoot;
    SwLayoutFrame *mpUpper;
    SwFrame       *mpNext;
    SwFrame       *mpPrev;

    SwFrame *FindNext_();
    SwFrame *FindPrev_();

    /** method to determine next content frame in the same environment
        for a flow frame (content frame, table frame, section frame)

        #i27138# - adding documentation:
        Travelling downwards through the layout to determine the next content
        frame in the same environment. There are several environments in a
        document, which form a closed context regarding this function. These
        environments are:
        - Each page header
        - Each page footer
        - Each unlinked fly frame
        - Each group of linked fly frames
        - All footnotes
        - All document body frames
        #i27138# - adding parameter <_bInSameFootnote>
        Its default value is <false>. If its value is <true>, the environment
        'All footnotes' is no longer treated. Instead each footnote is treated
        as an own environment.

        @param _bInSameFootnote
        input parameter - boolean indicating, that the found next content
        frame has to be in the same footnote frame. This parameter is only
        relevant for flow frames in footnotes.

        @return SwContentFrame*
        pointer to the found next content frame. It's NULL, if none exists.
    */
    SwContentFrame* FindNextCnt_( const bool _bInSameFootnote );

    /** method to determine previous content frame in the same environment
        for a flow frame (content frame, table frame, section frame)

        #i27138#
        Travelling upwards through the layout to determine the previous content
        frame in the same environment. There are several environments in a
        document, which form a closed context regarding this function. These
        environments are:
        - Each page header
        - Each page footer
        - Each unlinked fly frame
        - Each group of linked fly frames
        - All footnotes
        - All document body frames
        #i27138# - adding parameter <_bInSameFootnote>
        Its default value is <false>. If its value is <true>, the environment
        'All footnotes' is no longer treated. Instead each footnote is treated
        as an own environment.

        The found previous content frame has to be in the same footnote frame. This is only
        relevant for flow frames in footnotes.

        @return SwContentFrame*
        pointer to the found previous content frame. It's NULL, if none exists.
    */
    SwContentFrame* FindPrevCnt_();

    void UpdateAttrFrame( const SfxPoolItem*, const SfxPoolItem*, sal_uInt8 & );
    SwFrame* GetIndNext_();
    void SetDirFlags( bool bVert );

    const SwLayoutFrame* ImplGetNextLayoutLeaf( bool bFwd ) const;

    SwPageFrame* ImplFindPageFrame();

protected:
    SwSortedObjs* mpDrawObjs;    // draw objects, can be 0

    SwRect  maFrame;   // absolute position in document and size of the Frame
    SwRect  maPrt;   // position relatively to Frame and size of PrtArea

    SwFrameType mnFrameType;  //Who am I?

    bool mbReverse     : 1; // Next line above/at the right side instead
                                 // under/at the left side of the previous line
    bool mbInvalidR2L  : 1;
    bool mbDerivedR2L  : 1;
    bool mbRightToLeft : 1;
    bool mbInvalidVert : 1;
    bool mbDerivedVert : 1;
    bool mbVertical    : 1;

    bool mbVertLR      : 1;

    bool mbValidPos      : 1;
    bool mbValidPrtArea  : 1;
    bool mbValidSize     : 1;
    bool mbValidLineNum  : 1;
    bool mbFixSize       : 1;
    // if true, frame will be painted completely even content was changed
    // only partially. For ContentFrames a border (from Action) will exclusively
    // painted if <mbCompletePaint> is true.
    bool mbCompletePaint : 1;
    bool mbRetouche      : 1; // frame is responsible for retouching

    bool mbInfInvalid    : 1;  // InfoFlags are invalid
    bool mbInfBody       : 1;  // Frame is in document body
    bool mbInfTab        : 1;  // Frame is in a table
    bool mbInfFly        : 1;  // Frame is in a Fly
    bool mbInfFootnote        : 1;  // Frame is in a footnote
    bool mbInfSct        : 1;  // Frame is in a section
    bool mbColLocked     : 1;  // lock Grow/Shrink for column-wise section
                                  // or fly frames, will be set in Format
    bool m_isInDestroy : 1;
    bool mbForbidDelete : 1;

    void ColLock()      { mbColLocked = true; }
    void ColUnlock()    { mbColLocked = false; }

    virtual void DestroyImpl();
    virtual ~SwFrame() override;

    // Only used by SwRootFrame Ctor to get 'this' into mpRoot...
    void setRootFrame( SwRootFrame* pRoot ) { mpRoot = pRoot; }

    SwPageFrame *InsertPage( SwPageFrame *pSibling, bool bFootnote );
    void PrepareMake(vcl::RenderContext* pRenderContext);
    void OptPrepareMake();
    virtual void MakePos();
    // Format next frame of table frame to assure keeping attributes.
    // In case of nested tables method <SwFrame::MakeAll()> is called to
    // avoid formatting of superior table frame.
    friend SwFrame* sw_FormatNextContentForKeep( SwTabFrame* pTabFrame );

    virtual void MakeAll(vcl::RenderContext* pRenderContext) = 0;
    // adjust frames of a page
    SwTwips AdjustNeighbourhood( SwTwips nDiff, bool bTst = false );

    // change only frame size not the size of PrtArea
    virtual SwTwips ShrinkFrame( SwTwips, bool bTst = false, bool bInfo = false ) = 0;
    virtual SwTwips GrowFrame  ( SwTwips, bool bTst = false, bool bInfo = false ) = 0;

    SwModify        *GetDep()       { return GetRegisteredInNonConst(); }
    const SwModify  *GetDep() const { return GetRegisteredIn(); }

    SwFrame( SwModify*, SwFrame* );

    void CheckDir( sal_uInt16 nDir, bool bVert, bool bOnlyBiDi, bool bBrowse );

    /** enumeration for the different invalidations
        #i28701#
    */
    enum InvalidationType
    {
        INVALID_SIZE, INVALID_PRTAREA, INVALID_POS, INVALID_LINENUM, INVALID_ALL
    };

    /** method to determine, if an invalidation is allowed.
        #i28701
    */
    virtual bool InvalidationAllowed( const InvalidationType _nInvalid ) const;

    /** method to perform additional actions on an invalidation

        #i28701#
        Method has *only* to contain actions, which has to be performed on
        *every* assignment of the corresponding flag to <false>.
    */
    virtual void ActionOnInvalidation( const InvalidationType _nInvalid );

    // draw shadow and borders
    void PaintShadow( const SwRect&, SwRect&, const SwBorderAttrs& ) const;
    virtual void  Modify( const SfxPoolItem*, const SfxPoolItem* ) override;

    virtual const IDocumentDrawModelAccess& getIDocumentDrawModelAccess( );

public:
    virtual css::uno::Sequence< css::style::TabStop > GetTabStopInfo( SwTwips )
    {
        return css::uno::Sequence< css::style::TabStop >();
    }


    SwFrameType GetType() const { return mnFrameType; }

    static SwCache &GetCache()                { return *mpCache; }
    static SwCache *GetCachePtr()             { return mpCache;  }
    static void     SetCache( SwCache *pNew ) { mpCache = pNew;  }

    // change PrtArea size and FrameSize
    SwTwips Shrink( SwTwips, bool bTst = false, bool bInfo = false );
    SwTwips Grow  ( SwTwips, bool bTst = false, bool bInfo = false );

    // different methods for inserting in layout tree (for performance reasons)

    // insert before pBehind or at the end of the chain below mpUpper
    void InsertBefore( SwLayoutFrame* pParent, SwFrame* pBehind );
    // insert after pBefore or at the beginning of the chain below mpUpper
    void InsertBehind( SwLayoutFrame *pParent, SwFrame *pBefore );
    // insert before pBehind or at the end of the chain while considering
    // the siblings of pSct
    bool InsertGroupBefore( SwFrame* pParent, SwFrame* pWhere, SwFrame* pSct );
    void RemoveFromLayout();

    // For internal use only - who ignores this will be put in a sack and has
    // to stay there for two days
    // Does special treatment for Get_[Next|Prev]Leaf() (for tables).
    SwLayoutFrame *GetLeaf( MakePageType eMakePage, bool bFwd );
    SwLayoutFrame *GetNextLeaf   ( MakePageType eMakePage );
    SwLayoutFrame *GetNextFootnoteLeaf( MakePageType eMakePage );
    SwLayoutFrame *GetNextSctLeaf( MakePageType eMakePage );
    SwLayoutFrame *GetNextCellLeaf( MakePageType eMakePage );
    SwLayoutFrame *GetPrevLeaf   ( MakePageType eMakeFootnote );
    SwLayoutFrame *GetPrevFootnoteLeaf( MakePageType eMakeFootnote );
    SwLayoutFrame *GetPrevSctLeaf( MakePageType eMakeFootnote );
    SwLayoutFrame *GetPrevCellLeaf( MakePageType eMakeFootnote );
    const SwLayoutFrame *GetLeaf ( MakePageType eMakePage, bool bFwd,
                                 const SwFrame *pAnch ) const;

    bool WrongPageDesc( SwPageFrame* pNew );

    //#i28701# - new methods to append/remove drawing objects
    void AppendDrawObj( SwAnchoredObject& _rNewObj );
    void RemoveDrawObj( SwAnchoredObject& _rToRemoveObj );

    // work with chain of FlyFrames
    void  AppendFly( SwFlyFrame *pNew );
    void  RemoveFly( SwFlyFrame *pToRemove );
    const SwSortedObjs *GetDrawObjs() const { return mpDrawObjs; }
          SwSortedObjs *GetDrawObjs()         { return mpDrawObjs; }
    // #i28701# - change purpose of method and adjust its name
    void InvalidateObjs( const bool _bNoInvaOfAsCharAnchoredObjs = true );

    virtual void PaintBorder( const SwRect&, const SwPageFrame *pPage,
                              const SwBorderAttrs & ) const;
    void PaintBaBo( const SwRect&, const SwPageFrame *pPage,
                    const bool bOnlyTextBackground = false) const;
    void PaintBackground( const SwRect&, const SwPageFrame *pPage,
                          const SwBorderAttrs &,
                          const bool bLowerMode = false,
                          const bool bLowerBorder = false,
                          const bool bOnlyTextBackground = false ) const;
    void PaintBorderLine( const SwRect&, const SwRect&, const SwPageFrame*,
                          const Color *pColor,
                          const editeng::SvxBorderStyle = css::table::BorderLineStyle::SOLID ) const;

    drawinglayer::processor2d::BaseProcessor2D * CreateProcessor2D( ) const;
    void ProcessPrimitives( const drawinglayer::primitive2d::Primitive2DContainer& rSequence ) const;

    // retouch, not in the area of the given Rect!
    void Retouch( const SwPageFrame *pPage, const SwRect &rRect ) const;

    bool GetBackgroundBrush(
        drawinglayer::attribute::SdrAllFillAttributesHelperPtr& rFillAttributes,
        const SvxBrushItem*& rpBrush,
        const Color*& rpColor,
        SwRect &rOrigRect,
        bool bLowerMode ) const;

    inline void SetCompletePaint() const;
    inline void ResetCompletePaint() const;
    inline bool IsCompletePaint() const { return mbCompletePaint; }

    inline void SetRetouche() const;
    inline void ResetRetouche() const;
    inline bool IsRetouche() const { return mbRetouche; }

    void SetInfFlags();
    inline void InvalidateInfFlags() { mbInfInvalid = true; }
    inline bool IsInDocBody() const;    // use InfoFlags, determine flags
    inline bool IsInFootnote() const;        // if necessary
    inline bool IsInTab() const;
    inline bool IsInFly() const;
    inline bool IsInSct() const;

    // If frame is inside a split table row, this function returns
    // the corresponding row frame in the follow table.
    const SwRowFrame* IsInSplitTableRow() const;

    // If frame is inside a follow flow row, this function returns
    // the corresponding row frame master table
    const SwRowFrame* IsInFollowFlowRow() const;

    bool IsInBalancedSection() const;

    inline bool IsReverse() const { return mbReverse; }
    inline bool IsVertical() const;

    inline bool IsVertLR() const;

    inline void SetDerivedVert( bool bNew ){ mbDerivedVert = bNew; }
    inline void SetInvalidVert( bool bNew) { mbInvalidVert = bNew; }
    inline bool IsRightToLeft() const;
    inline void SetDerivedR2L( bool bNew ) { mbDerivedR2L  = bNew; }

    void CheckDirChange();
    // returns upper left frame position for LTR and
    // upper right frame position for Asian / RTL frames
    Point   GetFrameAnchorPos( bool bIgnoreFlysAnchoredAtThisFrame ) const;

    /** determine, if frame is moveable in given environment

        method replaced 'old' method <bool IsMoveable() const>.
        Determines, if frame is moveable in given environment. if no environment
        is given (parameter _pLayoutFrame == 0), the movability in the actual
        environment (<GetUpper()) is checked.

        @param _pLayoutFrame
        input parameter - given environment (layout frame), in which the movability
        will be checked. If not set ( == 0 ), actual environment is taken.

        @return boolean, indicating, if frame is moveable in given environment
    */
    bool IsMoveable( const SwLayoutFrame* _pLayoutFrame = nullptr ) const;

    // Is it permitted for the (Text)Frame to add a footnote in the current
    // environment (not e.g. for repeating table headlines)
    bool IsFootnoteAllowed() const;

    virtual void  Format( vcl::RenderContext* pRenderContext, const SwBorderAttrs *pAttrs = nullptr );

    virtual void CheckDirection( bool bVert );

    void ReinitializeFrameSizeAttrFlags();

    const SwAttrSet *GetAttrSet() const;

    inline bool HasFixSize() const { return mbFixSize; }

    // check all pages (starting from the given) and correct them if needed
    static void CheckPageDescs( SwPageFrame *pStart, bool bNotifyFields = true, SwPageFrame** ppPrev = nullptr);

    // might return 0, with and without const
    SwFrame               *GetNext()  { return mpNext; }
    SwFrame               *GetPrev()  { return mpPrev; }
    SwLayoutFrame         *GetUpper() { return mpUpper; }
    SwRootFrame           *getRootFrame(){ return mpRoot; }
    SwPageFrame           *FindPageFrame() { return IsPageFrame() ? reinterpret_cast<SwPageFrame*>(this) : ImplFindPageFrame(); }
    SwFrame               *FindColFrame();
    SwRowFrame            *FindRowFrame();
    SwFootnoteBossFrame   *FindFootnoteBossFrame( bool bFootnotes = false );
    SwTabFrame            *ImplFindTabFrame();
    SwFootnoteFrame       *ImplFindFootnoteFrame();
    SwFlyFrame            *ImplFindFlyFrame();
    SwSectionFrame        *ImplFindSctFrame();
    SwFrame               *FindFooterOrHeader();
    SwFrame               *GetLower();
    const SwFrame         *GetNext()  const { return mpNext; }
    const SwFrame         *GetPrev()  const { return mpPrev; }
    const SwLayoutFrame   *GetUpper() const { return mpUpper; }
    const SwRootFrame     *getRootFrame()   const { return mpRoot; }
    inline SwTabFrame     *FindTabFrame();
    inline SwFootnoteFrame     *FindFootnoteFrame();
    inline SwFlyFrame     *FindFlyFrame();
    inline SwSectionFrame *FindSctFrame();
    inline SwFrame        *FindNext();
    // #i27138# - add parameter <_bInSameFootnote>
    SwContentFrame* FindNextCnt( const bool _bInSameFootnote = false );
    inline SwFrame        *FindPrev();
    inline const SwPageFrame *FindPageFrame() const;
    inline const SwFootnoteBossFrame *FindFootnoteBossFrame( bool bFootnote = false ) const;
    inline const SwFrame     *FindColFrame() const;
    inline const SwFrame     *FindFooterOrHeader() const;
    inline const SwTabFrame  *FindTabFrame() const;
    inline const SwFootnoteFrame  *FindFootnoteFrame() const;
    inline const SwFlyFrame  *FindFlyFrame() const;
    inline const SwSectionFrame *FindSctFrame() const;
    inline const SwFrame     *FindNext() const;
    // #i27138# - add parameter <_bInSameFootnote>
    const SwContentFrame* FindNextCnt( const bool _bInSameFootnote = false ) const;
    inline const SwFrame     *FindPrev() const;
           const SwFrame     *GetLower()  const;

    SwContentFrame* FindPrevCnt();

    const SwContentFrame* FindPrevCnt() const;

    // #i79774#
    SwFrame* GetIndPrev_() const;
    SwFrame* GetIndPrev() const
        { return ( mpPrev || !IsInSct() ) ? mpPrev : GetIndPrev_(); }

    SwFrame* GetIndNext()
        { return ( mpNext || !IsInSct() ) ? mpNext : GetIndNext_(); }
    const SwFrame* GetIndNext() const { return const_cast<SwFrame*>(this)->GetIndNext(); }

    sal_uInt16 GetPhyPageNum() const;   // page number without offset
    sal_uInt16 GetVirtPageNum() const;  // page number with offset
    bool OnRightPage() const { return 0 != GetPhyPageNum() % 2; };
    bool WannaRightPage() const;
    bool OnFirstPage() const;

    inline const  SwLayoutFrame *GetPrevLayoutLeaf() const;
    inline const  SwLayoutFrame *GetNextLayoutLeaf() const;
    inline SwLayoutFrame *GetPrevLayoutLeaf();
    inline SwLayoutFrame *GetNextLayoutLeaf();

    virtual void Calc(vcl::RenderContext* pRenderContext) const; // here might be "formatted"
    inline void OptCalc() const;    // here we assume (for optimization) that
                                    // the predecessors are already formatted

    Point   GetRelPos() const;
    const  SwRect &Frame() const { return maFrame; }
    const  SwRect &Prt() const { return maPrt; }

    // PaintArea is the area where content might be displayed.
    // The margin of a page or the space between columns belongs to it.
    const SwRect PaintArea() const;
    // UnionFrame is the union of Frame- and PrtArea, normally identical
    // to the FrameArea except in case of negative Prt margins.
    const SwRect UnionFrame( bool bBorder = false ) const;

    // HACK: Here we exceptionally allow direct access to members.
    // This should not delude into changing those value randomly; it is the
    // only option to circumvent compiler problems (same method with public
    // and protected).
    SwRect &Frame() { return maFrame; }
    SwRect &Prt() { return maPrt; }

    virtual Size ChgSize( const Size& aNewSize );

    virtual void Cut() = 0;
    //Add a method to change the acc table dispose state.
    void SetAccTableDispose(bool bDispose) { mbIfAccTableShouldDisposing = bDispose;}
    virtual void Paste( SwFrame* pParent, SwFrame* pSibling = nullptr ) = 0;

    void ValidateLineNum() { mbValidLineNum = true; }

    bool GetValidPosFlag()    const { return mbValidPos; }
    bool GetValidPrtAreaFlag()const { return mbValidPrtArea; }
    bool GetValidSizeFlag()   const { return mbValidSize; }
    bool GetValidLineNumFlag()const { return mbValidLineNum; }
    bool IsValid() const { return mbValidPos && mbValidSize && mbValidPrtArea; }

    // Only invalidate Frame
    // #i28701# - add call to method <ActionOnInvalidation(..)>
    //            for all invalidation methods.
    // #i28701# - use method <InvalidationAllowed(..)> to
    //            decide, if invalidation will to be performed or not.
    // #i26945# - no additional invalidation, if it's already
    //            invalidate.
    void InvalidateSize_()
    {
        if ( mbValidSize && InvalidationAllowed( INVALID_SIZE ) )
        {
            mbValidSize = false;
            ActionOnInvalidation( INVALID_SIZE );
        }
    }
    void InvalidatePrt_()
    {
        if ( mbValidPrtArea && InvalidationAllowed( INVALID_PRTAREA ) )
        {
            mbValidPrtArea = false;
            ActionOnInvalidation( INVALID_PRTAREA );
        }
    }
    void InvalidatePos_()
    {
        if ( mbValidPos && InvalidationAllowed( INVALID_POS ) )
        {
            mbValidPos = false;
            ActionOnInvalidation( INVALID_POS );
        }
    }
    void InvalidateLineNum_()
    {
        if ( mbValidLineNum && InvalidationAllowed( INVALID_LINENUM ) )
        {
            mbValidLineNum = false;
            ActionOnInvalidation( INVALID_LINENUM );
        }
    }
    void InvalidateAll_()
    {
        if ( ( mbValidSize || mbValidPrtArea || mbValidPos ) &&
             InvalidationAllowed( INVALID_ALL ) )
        {
            mbValidSize = mbValidPrtArea = mbValidPos = false;
            ActionOnInvalidation( INVALID_ALL );
        }
    }
    // also notify page at the same time
    inline void InvalidateSize();
    inline void InvalidatePrt();
    inline void InvalidatePos();
    inline void InvalidateLineNum();
    inline void InvalidateAll();
    void ImplInvalidateSize();
    void ImplInvalidatePrt();
    void ImplInvalidatePos();
    void ImplInvalidateLineNum();

    inline void InvalidateNextPos( bool bNoFootnote = false );
    void ImplInvalidateNextPos( bool bNoFootnote );

    /** method to invalidate printing area of next frame
        #i11859#
    */
    void InvalidateNextPrtArea();

    void InvalidatePage( const SwPageFrame *pPage = nullptr ) const;

    virtual bool    FillSelection( SwSelectionList& rList, const SwRect& rRect ) const;

    virtual bool    GetCursorOfst( SwPosition *, Point&,
                                 SwCursorMoveState* = nullptr, bool bTestBackground = false ) const;
    virtual bool    GetCharRect( SwRect &, const SwPosition&,
                                 SwCursorMoveState* = nullptr ) const;
    virtual void Paint( vcl::RenderContext& rRenderContext, SwRect const&,
                        SwPrintData const*const pPrintData = nullptr ) const;

    // HACK: shortcut between frame and formatting
    // It's your own fault if you cast void* incorrectly! In any case check
    // the void* for 0.
    virtual bool Prepare( const PrepareHint ePrep = PREP_CLEAR,
                          const void *pVoid = nullptr, bool bNotify = true );

    // true if it is the correct class, false otherwise
    inline bool IsLayoutFrame() const;
    inline bool IsRootFrame() const;
    inline bool IsPageFrame() const;
    inline bool IsColumnFrame() const;
    inline bool IsFootnoteBossFrame() const;  // footnote bosses might be PageFrames or ColumnFrames
    inline bool IsHeaderFrame() const;
    inline bool IsFooterFrame() const;
    inline bool IsFootnoteContFrame() const;
    inline bool IsFootnoteFrame() const;
    inline bool IsBodyFrame() const;
    inline bool IsColBodyFrame() const;  // implemented in layfrm.hxx, BodyFrame above ColumnFrame
    inline bool IsPageBodyFrame() const; // implemented in layfrm.hxx, BodyFrame above PageFrame
    inline bool IsFlyFrame() const;
    inline bool IsSctFrame() const;
    inline bool IsTabFrame() const;
    inline bool IsRowFrame() const;
    inline bool IsCellFrame() const;
    inline bool IsContentFrame() const;
    inline bool IsTextFrame() const;
    inline bool IsNoTextFrame() const;
    // Frames where its PrtArea depends on their neighbors and that are
    // positioned in the content flow
    inline bool IsFlowFrame() const;
    // Frames that are capable of retouching or that might need to retouch behind
    // themselves
    inline bool IsRetoucheFrame() const;
    inline bool IsAccessibleFrame() const;

    void PrepareCursor();                 // CursorShell is allowed to call this

    // Is the Frame (or the section containing it) protected? Same for Fly in
    // Fly in ... and footnotes
    bool IsProtected() const;

    bool IsColLocked()  const { return mbColLocked; }
    bool IsDeleteForbidden()  const { return mbForbidDelete; }

    /// this is the only way to delete a SwFrame instance
    static void DestroyFrame(SwFrame *const pFrame);

    bool IsInDtor() const { return mbInDtor; }

    // No inline cause we need the function pointers
    long GetTopMargin() const;
    long GetBottomMargin() const;
    long GetLeftMargin() const;
    long GetRightMargin() const;
    void SetTopBottomMargins( long, long );
    void SetBottomTopMargins( long, long );
    void SetLeftRightMargins( long, long );
    void SetRightLeftMargins( long, long );
    long GetPrtLeft() const;
    long GetPrtBottom() const;
    long GetPrtRight() const;
    long GetPrtTop() const;
    bool SetMinLeft( long );
    bool SetMaxBottom( long );
    bool SetMaxRight( long );
    bool SetMinTop( long );
    void MakeBelowPos( const SwFrame*, const SwFrame*, bool );
    void MakeUpperPos( const SwFrame*, const SwFrame*, bool );
    void MakeLeftPos( const SwFrame*, const SwFrame*, bool );
    void MakeRightPos( const SwFrame*, const SwFrame*, bool );
    inline bool IsNeighbourFrame() const
        { return bool(GetType() & FRM_NEIGHBOUR); }

    // #i65250#
    inline sal_uInt32 GetFrameId() const { return mnFrameId; }

    // NEW TABLES
    // Some functions for covered/covering table cells. This way unnecessary
    // includes can be avoided
    bool IsLeaveUpperAllowed() const;
    bool IsCoveredCell() const;
    bool IsInCoveredCell() const;

    // #i81146# new loop control
    bool KnowsFormat( const SwFormat& rFormat ) const;
    void RegisterToFormat( SwFormat& rFormat );
    void ValidateThisAndAllLowers( const sal_uInt16 nStage );

    void ForbidDelete()      { mbForbidDelete = true; }
    void AllowDelete()    { mbForbidDelete = false; }

    //UUUU
    drawinglayer::attribute::SdrAllFillAttributesHelperPtr getSdrAllFillAttributesHelper() const;
    bool supportsFullDrawingLayerFillAttributeSet() const;

public:
    // if writer is NULL, dumps the layout structure as XML in layout.xml
    virtual void dumpAsXml(xmlTextWriterPtr writer = nullptr) const;
    void dumpInfosAsXml(xmlTextWriterPtr writer) const;
    virtual void dumpAsXmlAttributes(xmlTextWriterPtr writer) const;
    void dumpChildrenAsXml(xmlTextWriterPtr writer) const;
    bool IsCollapse() const;
};

inline bool SwFrame::IsInDocBody() const
{
    if ( mbInfInvalid )
        const_cast<SwFrame*>(this)->SetInfFlags();
    return mbInfBody;
}
inline bool SwFrame::IsInFootnote() const
{
    if ( mbInfInvalid )
        const_cast<SwFrame*>(this)->SetInfFlags();
    return mbInfFootnote;
}
inline bool SwFrame::IsInTab() const
{
    if ( mbInfInvalid )
        const_cast<SwFrame*>(this)->SetInfFlags();
    return mbInfTab;
}
inline bool SwFrame::IsInFly() const
{
    if ( mbInfInvalid )
        const_cast<SwFrame*>(this)->SetInfFlags();
    return mbInfFly;
}
inline bool SwFrame::IsInSct() const
{
    if ( mbInfInvalid )
        const_cast<SwFrame*>(this)->SetInfFlags();
    return mbInfSct;
}
bool SwFrame::IsVertical() const
{
    if( mbInvalidVert )
        const_cast<SwFrame*>(this)->SetDirFlags( true );
    return mbVertical;
}
inline bool SwFrame::IsVertLR() const
{
    return mbVertLR;
}
inline bool SwFrame::IsRightToLeft() const
{
    if( mbInvalidR2L )
        const_cast<SwFrame*>(this)->SetDirFlags( false );
    return mbRightToLeft;
}

inline void SwFrame::SetCompletePaint() const
{
    const_cast<SwFrame*>(this)->mbCompletePaint = true;
}
inline void SwFrame::ResetCompletePaint() const
{
    const_cast<SwFrame*>(this)->mbCompletePaint = false;
}

inline void SwFrame::SetRetouche() const
{
    const_cast<SwFrame*>(this)->mbRetouche = true;
}
inline void SwFrame::ResetRetouche() const
{
    const_cast<SwFrame*>(this)->mbRetouche = false;
}

inline SwLayoutFrame *SwFrame::GetNextLayoutLeaf()
{
    return const_cast<SwLayoutFrame*>(static_cast<const SwFrame*>(this)->GetNextLayoutLeaf());
}
inline SwLayoutFrame *SwFrame::GetPrevLayoutLeaf()
{
    return const_cast<SwLayoutFrame*>(static_cast<const SwFrame*>(this)->GetPrevLayoutLeaf());
}
inline const SwLayoutFrame *SwFrame::GetNextLayoutLeaf() const
{
    return ImplGetNextLayoutLeaf( true );
}
inline const SwLayoutFrame *SwFrame::GetPrevLayoutLeaf() const
{
    return ImplGetNextLayoutLeaf( false );
}

inline void SwFrame::InvalidateSize()
{
    if ( mbValidSize )
        ImplInvalidateSize();
}
inline void SwFrame::InvalidatePrt()
{
    if ( mbValidPrtArea )
        ImplInvalidatePrt();
}
inline void SwFrame::InvalidatePos()
{
    if ( mbValidPos )
        ImplInvalidatePos();
}
inline void SwFrame::InvalidateLineNum()
{
    if ( mbValidLineNum )
        ImplInvalidateLineNum();
}
inline void SwFrame::InvalidateAll()
{
    if ( InvalidationAllowed( INVALID_ALL ) )
    {
        if ( mbValidPrtArea && mbValidSize && mbValidPos  )
            ImplInvalidatePos();
        mbValidPrtArea = mbValidSize = mbValidPos = false;

        // #i28701#
        ActionOnInvalidation( INVALID_ALL );
    }
}
inline void SwFrame::InvalidateNextPos( bool bNoFootnote )
{
    if ( mpNext && !mpNext->IsSctFrame() )
        mpNext->InvalidatePos();
    else
        ImplInvalidateNextPos( bNoFootnote );
}

inline void SwFrame::OptCalc() const
{
    if ( !mbValidPos || !mbValidPrtArea || !mbValidSize )
        const_cast<SwFrame*>(this)->OptPrepareMake();
}
inline const SwPageFrame *SwFrame::FindPageFrame() const
{
    return const_cast<SwFrame*>(this)->FindPageFrame();
}
inline const SwFrame *SwFrame::FindColFrame() const
{
    return const_cast<SwFrame*>(this)->FindColFrame();
}
inline const SwFrame *SwFrame::FindFooterOrHeader() const
{
    return const_cast<SwFrame*>(this)->FindFooterOrHeader();
}
inline SwTabFrame *SwFrame::FindTabFrame()
{
    return IsInTab() ? ImplFindTabFrame() : nullptr;
}
inline const SwFootnoteBossFrame *SwFrame::FindFootnoteBossFrame( bool bFootnote ) const
{
    return const_cast<SwFrame*>(this)->FindFootnoteBossFrame( bFootnote );
}
inline SwFootnoteFrame *SwFrame::FindFootnoteFrame()
{
    return IsInFootnote() ? ImplFindFootnoteFrame() : nullptr;
}
inline SwFlyFrame *SwFrame::FindFlyFrame()
{
    return IsInFly() ? ImplFindFlyFrame() : nullptr;
}
inline SwSectionFrame *SwFrame::FindSctFrame()
{
    return IsInSct() ? ImplFindSctFrame() : nullptr;
}

inline const SwTabFrame *SwFrame::FindTabFrame() const
{
    return IsInTab() ? const_cast<SwFrame*>(this)->ImplFindTabFrame() : nullptr;
}
inline const SwFootnoteFrame *SwFrame::FindFootnoteFrame() const
{
    return IsInFootnote() ? const_cast<SwFrame*>(this)->ImplFindFootnoteFrame() : nullptr;
}
inline const SwFlyFrame *SwFrame::FindFlyFrame() const
{
    return IsInFly() ? const_cast<SwFrame*>(this)->ImplFindFlyFrame() : nullptr;
}
inline const SwSectionFrame *SwFrame::FindSctFrame() const
{
    return IsInSct() ? const_cast<SwFrame*>(this)->ImplFindSctFrame() : nullptr;
}
inline SwFrame *SwFrame::FindNext()
{
    if ( mpNext )
        return mpNext;
    else
        return FindNext_();
}
inline const SwFrame *SwFrame::FindNext() const
{
    if ( mpNext )
        return mpNext;
    else
        return const_cast<SwFrame*>(this)->FindNext_();
}
inline SwFrame *SwFrame::FindPrev()
{
    if ( mpPrev && !mpPrev->IsSctFrame() )
        return mpPrev;
    else
        return FindPrev_();
}
inline const SwFrame *SwFrame::FindPrev() const
{
    if ( mpPrev && !mpPrev->IsSctFrame() )
        return mpPrev;
    else
        return const_cast<SwFrame*>(this)->FindPrev_();
}

inline bool SwFrame::IsLayoutFrame() const
{
    return bool(GetType() & FRM_LAYOUT);
}
inline bool SwFrame::IsRootFrame() const
{
    return mnFrameType == SwFrameType::Root;
}
inline bool SwFrame::IsPageFrame() const
{
    return mnFrameType == SwFrameType::Page;
}
inline bool SwFrame::IsColumnFrame() const
{
    return mnFrameType == SwFrameType::Column;
}
inline bool SwFrame::IsFootnoteBossFrame() const
{
    return bool(GetType() & FRM_FTNBOSS);
}
inline bool SwFrame::IsHeaderFrame() const
{
    return mnFrameType == SwFrameType::Header;
}
inline bool SwFrame::IsFooterFrame() const
{
    return mnFrameType == SwFrameType::Footer;
}
inline bool SwFrame::IsFootnoteContFrame() const
{
    return mnFrameType == SwFrameType::FtnCont;
}
inline bool SwFrame::IsFootnoteFrame() const
{
    return mnFrameType == SwFrameType::Ftn;
}
inline bool SwFrame::IsBodyFrame() const
{
    return mnFrameType == SwFrameType::Body;
}
inline bool SwFrame::IsFlyFrame() const
{
    return mnFrameType == SwFrameType::Fly;
}
inline bool SwFrame::IsSctFrame() const
{
    return mnFrameType == SwFrameType::Section;
}
inline bool SwFrame::IsTabFrame() const
{
    return mnFrameType == SwFrameType::Tab;
}
inline bool SwFrame::IsRowFrame() const
{
    return mnFrameType == SwFrameType::Row;
}
inline bool SwFrame::IsCellFrame() const
{
    return mnFrameType == SwFrameType::Cell;
}
inline bool SwFrame::IsContentFrame() const
{
    return bool(GetType() & FRM_CNTNT);
}
inline bool SwFrame::IsTextFrame() const
{
    return mnFrameType == SwFrameType::Txt;
}
inline bool SwFrame::IsNoTextFrame() const
{
    return mnFrameType == SwFrameType::NoTxt;
}
inline bool SwFrame::IsFlowFrame() const
{
    return bool(GetType() & (FRM_CNTNT|SwFrameType::Tab|SwFrameType::Section));
}
inline bool SwFrame::IsRetoucheFrame() const
{
    return bool(GetType() & (FRM_CNTNT|SwFrameType::Tab|SwFrameType::Section|SwFrameType::Ftn));
}
inline bool SwFrame::IsAccessibleFrame() const
{
    return bool(GetType() & FRM_ACCESSIBLE);
}

//use this to protect a SwFrame for a given scope from getting deleted
class SwFrameDeleteGuard
{
private:
    SwFrame *m_pFrame;
    bool m_bOldDeleteAllowed;
public:
    //Flag pFrame for SwFrameDeleteGuard lifetime that we shouldn't delete
    //it in e.g. SwSectionFrame::MergeNext etc because we will need it
    //again after the SwFrameDeleteGuard dtor
    explicit SwFrameDeleteGuard(SwFrame* pFrame)
        : m_pFrame(pFrame)
    {
        m_bOldDeleteAllowed = m_pFrame && !m_pFrame->IsDeleteForbidden();
        if (m_bOldDeleteAllowed)
            m_pFrame->ForbidDelete();
    }

    ~SwFrameDeleteGuard()
    {
        if (m_bOldDeleteAllowed)
            m_pFrame->AllowDelete();
    }
};

typedef long (SwFrame:: *SwFrameGet)() const;
typedef bool (SwFrame:: *SwFrameMax)( long );
typedef void (SwFrame:: *SwFrameMakePos)( const SwFrame*, const SwFrame*, bool );
typedef long (*SwOperator)( long, long );
typedef void (SwFrame:: *SwFrameSet)( long, long );

struct SwRectFnCollection
{
    SwRectGet     fnGetTop;
    SwRectGet     fnGetBottom;
    SwRectGet     fnGetLeft;
    SwRectGet     fnGetRight;
    SwRectGet     fnGetWidth;
    SwRectGet     fnGetHeight;
    SwRectPoint   fnGetPos;
    SwRectSize    fnGetSize;

    SwRectSet     fnSetTop;
    SwRectSet     fnSetBottom;
    SwRectSet     fnSetLeft;
    SwRectSet     fnSetRight;
    SwRectSet     fnSetWidth;
    SwRectSet     fnSetHeight;

    SwRectSet     fnSubTop;
    SwRectSet     fnAddBottom;
    SwRectSet     fnSubLeft;
    SwRectSet     fnAddRight;
    SwRectSet     fnAddWidth;
    SwRectSet     fnAddHeight;

    SwRectSet     fnSetPosX;
    SwRectSet     fnSetPosY;

    SwFrameGet      fnGetTopMargin;
    SwFrameGet      fnGetBottomMargin;
    SwFrameGet      fnGetLeftMargin;
    SwFrameGet      fnGetRightMargin;
    SwFrameSet      fnSetXMargins;
    SwFrameSet      fnSetYMargins;
    SwFrameGet      fnGetPrtTop;
    SwFrameGet      fnGetPrtBottom;
    SwFrameGet      fnGetPrtLeft;
    SwFrameGet      fnGetPrtRight;
    SwRectDist      fnTopDist;
    SwRectDist      fnBottomDist;
    SwRectDist      fnLeftDist;
    SwRectDist      fnRightDist;
    SwFrameMax      fnSetLimit;
    SwRectMax       fnOverStep;

    SwRectSetPos    fnSetPos;
    SwFrameMakePos  fnMakePos;
    SwOperator      fnXDiff;
    SwOperator      fnYDiff;
    SwOperator      fnXInc;
    SwOperator      fnYInc;

    SwRectSetTwice  fnSetLeftAndWidth;
    SwRectSetTwice  fnSetTopAndHeight;
};

typedef SwRectFnCollection* SwRectFn;

extern SwRectFn fnRectHori, fnRectVert, fnRectB2T, fnRectVL2R, fnRectVertL2R;
struct SwRectFnSet {
    bool bVert;
    bool bRev;
    bool bVertL2R;
    SwRectFn fnRect;

    explicit SwRectFnSet(const SwFrame *pFrame)
        : bVert(pFrame->IsVertical())
        , bRev(pFrame->IsReverse())
        , bVertL2R(pFrame->IsVertLR())
    {
        fnRect = bVert ?
            (bRev ? fnRectVL2R : (bVertL2R ? fnRectVertL2R : fnRectVert)) :
            (bRev ? fnRectB2T : fnRectHori);
    }

    // Convenience operator to simplify pointer-to-member syntax
    SwRectFn operator ->() const { return fnRect; }

    void Refresh(const SwFrame *pFrame)
    {
        bVert = pFrame->IsVertical();
        bRev = pFrame->IsReverse();
        bVertL2R = pFrame->IsVertLR();
        fnRect = bVert ?
            (bRev ? fnRectVL2R : (bVertL2R ? fnRectVertL2R : fnRectVert)) :
            (bRev ? fnRectB2T : fnRectHori);
    }

    bool PosDiff(const SwRect &rRect1, const SwRect &rRect2)
    {
        return ((rRect1.*fnRect->fnGetTop)() != (rRect2.*fnRect->fnGetTop)()
            || (rRect1.*fnRect->fnGetLeft)() != (rRect2.*fnRect->fnGetLeft)());
    }
};

#endif

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