ndhints.hxx

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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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 * 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
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 *   except in compliance with the License. You may obtain a copy of
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#ifndef INCLUDED_SW_INC_NDHINTS_HXX
#define INCLUDED_SW_INC_NDHINTS_HXX
 
#include "swtypes.hxx"
 
class SwTextNode;
class SwRegHistory;                 // Is in RolBck.hxx.
class SwTextAttr;
class SwTextAttrNesting;
 
class SfxPoolItem;
class SfxItemSet;
class SwDoc;
 
enum class CopyOrNewType { Copy, New };
 
SwTextAttr * MakeTextAttr(
    SwDoc & rDoc,
    SfxPoolItem & rNew,
    sal_Int32 const nStt,
    sal_Int32 const nEnd,
    CopyOrNewType const bIsCopy = CopyOrNewType::New,
    SwTextNode *const pTextNode = nullptr );
 
SwTextAttr * MakeTextAttr(
    SwDoc & rDoc,
    const SfxItemSet & rSet,
    sal_Int32 nStt,
    sal_Int32 nEnd );
 
SwTextAttr* MakeRedlineTextAttr(
    SwDoc & rDoc,
    SfxPoolItem const & rAttr );
 
struct CompareSwpHtEnd
{
    bool operator()( sal_Int32 nEndPos, const SwTextAttr* rhs ) const;
    bool operator()( const SwTextAttr* lhs, const SwTextAttr* rhs ) const;
};
struct CompareSwpHtWhichStart
{
    bool operator()( const SwTextAttr* lhs, const sal_uInt16 nWhich ) const;
    bool operator()( const SwTextAttr* lhs, const SwTextAttr* rhs ) const;
};
 
class SwpHints
{
private:
    const SwTextNode& m_rParent;
 
    // SAL_MAX_SIZE is used by GetStartOf to return
    // failure, so just allow SAL_MAX_SIZE-1 hints
    static const size_t MAX_HINTS = SAL_MAX_SIZE-1;
 
    std::vector<SwTextAttr*> m_HintsByStart;
    std::vector<SwTextAttr*> m_HintsByEnd;
    std::vector<SwTextAttr*> m_HintsByWhichAndStart;
 
    SwRegHistory* m_pHistory;                   
 
    bool          m_bInSplitNode         : 1;
    // m_bHiddenByParaField is invalid, call CalcHiddenParaField()
    mutable bool  m_bCalcHiddenParaField : 1;
    // if all fields controlling visibility of the paragraph require to hide it
    // (if there's no such fields, or if any field requires to show, then this is false)
    mutable bool  m_bHiddenByParaField   : 1;
    bool          m_bFootnote            : 1;   
    bool          m_bDDEFields           : 1;   
    // Sort on demand to avoid O(n^2) behaviour
    mutable bool  m_bStartMapNeedsSorting : 1;
    mutable bool  m_bEndMapNeedsSorting : 1;
    mutable bool  m_bWhichMapNeedsSorting : 1;
 
    void NoteInHistory( SwTextAttr *pAttr, const bool bNew = false );
 
    void CalcFlags( );
 
    friend class SwTextNode;
    void DeleteAtPos( size_t nPos );
    void Delete( SwTextAttr const * pTextHt );
 
    void SetInSplitNode(bool bInSplit) { m_bInSplitNode = bInSplit; }
    void SetCalcHiddenParaField() const { m_bCalcHiddenParaField = true; }
    void SetHiddenByParaField( const bool bNew ) const { m_bHiddenByParaField = bNew; }
    bool IsHiddenByParaField() const
    {
        if ( m_bCalcHiddenParaField )
        {
            CalcHiddenParaField();
        }
        return m_bHiddenByParaField;
    }
 
    void InsertNesting(SwTextAttrNesting & rNewHint);
    bool TryInsertNesting(SwTextNode & rNode, SwTextAttrNesting & rNewHint);
    void BuildPortions( SwTextNode& rNode, SwTextAttr& rNewHint,
            const SetAttrMode nMode );
    bool MergePortions( SwTextNode& rNode );
 
    void Insert(SwTextAttr* pHt);
    SW_DLLPUBLIC void Resort() const;
    SW_DLLPUBLIC void ResortStartMap() const;
    SW_DLLPUBLIC void ResortEndMap() const;
    SW_DLLPUBLIC void ResortWhichMap() const;
 
    size_t GetIndexOf( const SwTextAttr *pHt ) const;
 
#ifdef DBG_UTIL
    bool Check(bool) const;
#endif
 
public:
    SwpHints(const SwTextNode& rParent);
 
    size_t Count() const { return m_HintsByStart.size(); }
    bool Contains( const SwTextAttr *pHt ) const;
    SwTextAttr * Get( size_t nPos ) const
    {
        assert( !(nPos != 0 && m_bStartMapNeedsSorting) && "going to trigger a resort in the middle of an iteration, that's bad" );
        if (m_bStartMapNeedsSorting)
            ResortStartMap();
        return m_HintsByStart[nPos];
    }
    // Get without triggering resorting - useful if we are modifying start/end pos while iterating
    SwTextAttr * GetWithoutResorting( size_t nPos ) const
    {
        return m_HintsByStart[nPos];
    }
 
    int GetLastPosSortedByEnd(sal_Int32 nEndPos) const;
    SwTextAttr * GetSortedByEnd( size_t nPos ) const
    {
        assert( !(nPos != 0 && m_bEndMapNeedsSorting) && "going to trigger a resort in the middle of an iteration, that's bad" );
        if (m_bEndMapNeedsSorting)
            ResortEndMap();
        return m_HintsByEnd[nPos];
    }
 
    size_t GetFirstPosSortedByWhichAndStart(sal_uInt16 nWhich) const;
    SwTextAttr * GetSortedByWhichAndStart( size_t nPos ) const
    {
        assert( !(nPos != 0 && m_bWhichMapNeedsSorting) && "going to trigger a resort in the middle of an iteration, that's bad" );
        if (m_bWhichMapNeedsSorting)
            ResortWhichMap();
        return m_HintsByWhichAndStart[nPos];
    }
 
    void SortIfNeedBe() const
    {
        if (m_bStartMapNeedsSorting)
            ResortStartMap();
        if (m_bEndMapNeedsSorting)
            ResortEndMap();
        if (m_bWhichMapNeedsSorting)
            ResortWhichMap();
    }
    SwTextAttr * Cut( const size_t nPosInStart )
    {
        SwTextAttr *pHt = m_HintsByStart[nPosInStart];
        DeleteAtPos( nPosInStart );
        return pHt;
    }
 
    bool CanBeDeleted() const    { return m_HintsByStart.empty(); }
 
    void Register( SwRegHistory* pHist ) { m_pHistory = pHist; }
    void DeRegister() { Register(nullptr); }
    SwRegHistory* GetHistory() const    { return m_pHistory; }
 
    bool TryInsertHint( SwTextAttr * const pHint, SwTextNode & rNode,
            const SetAttrMode nMode = SetAttrMode::DEFAULT );
 
    bool HasFootnote() const          { return m_bFootnote; }
    bool IsInSplitNode() const   { return m_bInSplitNode; }
 
    // calc current value of m_bHiddenByParaField, returns true iff changed
    bool CalcHiddenParaField() const; // changes mutable state
 
    // Marks the hint-maps as needing sorting because the position of something has changed
    void StartPosChanged() const { m_bStartMapNeedsSorting = true; m_bEndMapNeedsSorting = true; m_bWhichMapNeedsSorting = true; }
    void EndPosChanged() const { m_bStartMapNeedsSorting = true; m_bEndMapNeedsSorting = true; m_bWhichMapNeedsSorting = true; }
};
 
#endif
 
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