/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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 * 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 .
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#ifndef INCLUDED_EDITENG_SVXRTF_HXX
#define INCLUDED_EDITENG_SVXRTF_HXX

#include <svl/itemset.hxx>
#include <svtools/parrtf.hxx>
#include <rtl/ustring.hxx>
#include <tools/color.hxx>

#include <editeng/editengdllapi.h>

#include <optional>
#include <vector>
#include <map>
#include <memory>

namespace vcl { class Font; }
struct SvxRTFStyleType;
class SvxRTFItemStackType;
class SvxRTFItemStackList : public std::vector<std::unique_ptr<SvxRTFItemStackType>> {};

// Mapper-Classes for the various requirements on Document positions
//        Swg - NodePosition is a SwIndex, which is used internally
// EditEngine - ULONG to list of paragraphs

class EditEngine;
class ContentNode;
class EditNodeIdx
{
public:
    EditNodeIdx(EditEngine* pEE, ContentNode* pNd);
    sal_Int32   GetIdx() const;
    ContentNode* GetNode() { return mpNode; }
private:
    EditEngine*   mpEditEngine;
    ContentNode*  mpNode;
};

class EditSelection;
class EditPosition
{
private:
    EditEngine*     mpEditEngine;
    EditSelection*  mpCurSel;

public:
    EditPosition(EditEngine* pIEE, EditSelection* pSel);

    sal_Int32   GetNodeIdx() const;
    sal_Int32   GetCntIdx() const;

    // clone
    std::unique_ptr<EditPosition> Clone() const;

    // clone NodeIndex
    std::unique_ptr<EditNodeIdx> MakeNodeIdx() const;
};

typedef std::map<short, std::unique_ptr<vcl::Font>> SvxRTFFontTbl;
typedef std::map<sal_uInt16, std::unique_ptr<SvxRTFStyleType>> SvxRTFStyleTbl;

// own helper classes for the RTF Parser
struct SvxRTFStyleType
{
    SfxItemSet aAttrSet;        // the attributes of Style (+ derivated!)
    OUString sName;
    sal_uInt16 nBasedOn;
    sal_uInt8 nOutlineNo;

    SvxRTFStyleType( SfxItemPool& rPool, const sal_uInt16* pWhichRange );
};


// Here are the IDs for all character attributes, which can be detected by
// SvxParser and can be set in a SfxItemSet. The IDs are set correctly through
// the SlotIds from POOL.
struct RTFPlainAttrMapIds
{
    sal_uInt16  nCaseMap,
            nBgColor,
            nColor,
            nContour,
            nCrossedOut,
            nEscapement,
            nFont,
            nFontHeight,
            nKering,
            nLanguage,
            nPosture,
            nShadowed,
            nUnderline,
            nOverline,
            nWeight,
            nWordlineMode,
            nAutoKerning,
            nCJKFont,
            nCJKFontHeight,
            nCJKLanguage,
            nCJKPosture,
            nCJKWeight,
            nCTLFont,
            nCTLFontHeight,
            nCTLLanguage,
            nCTLPosture,
            nCTLWeight,
            nEmphasis,
            nTwoLines,
            nCharScaleX,
            nHorzVert,
            nRelief,
            nHidden
            ;
    RTFPlainAttrMapIds( const SfxItemPool& rPool );
};

// Here are the IDs for all paragraph attributes, which can be detected by
// SvxParser and can be set in a SfxItemSet. The IDs are set correctly through
// the SlotIds from POOL.
struct RTFPardAttrMapIds
{
    sal_uInt16  nLinespacing,
            nAdjust,
            nTabStop,
            nHyphenzone,
            nLRSpace,
            nULSpace,
            nBrush,
            nBox,
            nShadow,
            nOutlineLvl,
            nSplit,
            nKeep,
            nFontAlign,
            nScriptSpace,
            nHangPunct,
            nForbRule,
            nDirection
            ;
    RTFPardAttrMapIds( const SfxItemPool& rPool );
};


class EDITENG_DLLPUBLIC SvxRTFParser : public SvRTFParser
{
    std::vector<Color>    maColorTable;
    SvxRTFFontTbl         m_FontTable;
    SvxRTFStyleTbl        m_StyleTable;
    std::deque< std::unique_ptr<SvxRTFItemStackType> >  aAttrStack;
    SvxRTFItemStackList   m_AttrSetList;

    RTFPlainAttrMapIds aPlainMap;
    RTFPardAttrMapIds aPardMap;
    std::vector<sal_uInt16> aWhichMap;

    std::unique_ptr<EditPosition> pInsPos;
    SfxItemPool* pAttrPool;
    std::optional<Color>  mxDefaultColor;
    std::unique_ptr<vcl::Font>   pDfltFont;
    std::unique_ptr<SfxItemSet> pRTFDefaults;

    int     nDfltFont;

    bool    bNewDoc : 1;            // sal_False - Reading in an existing
    bool    bNewGroup : 1;          // sal_True - there was an opening parenthesis
    bool    bIsSetDfltTab : 1;      // sal_True - DefTab was loaded
    bool    bChkStyleAttr : 1;      // sal_True - StyleSheets are evaluated
    bool    bCalcValue : 1;         // sal_True - Twip values adapt to App
    bool    bIsLeftToRightDef : 1;  // sal_True - in LeftToRight char run def.
                                        // sal_False - in RightToLeft char run def.
    bool    bIsInReadStyleTab : 1;  // sal_True - in ReadStyleTable

    SvxRTFParser(SvxRTFParser const&) = delete;
    void operator=(SvxRTFParser const&) = delete;

    void ClearColorTbl();
    void ClearAttrStack();

    SvxRTFItemStackType* GetAttrSet_();  // Create new ItemStackType:s
    void ClearStyleAttr_( SvxRTFItemStackType& rStkType );

    // Sets all the attributes that are different from the current
    void SetAttrSet( SvxRTFItemStackType &rSet );
    void SetDefault( int nToken, int nValue );

    // Execute pard / plain
    void RTFPardPlain( bool bPard, SfxItemSet** ppSet );

    void BuildWhichTable();

    enum RTF_CharTypeDef
    {
        NOTDEF_CHARTYPE,
        LOW_CHARTYPE,
        HIGH_CHARTYPE,
        DOUBLEBYTE_CHARTYPE
    };

        // set latin/asian/complex character attributes
    void SetScriptAttr(
        RTF_CharTypeDef eType, SfxItemSet& rSet, SfxPoolItem& rItem );

protected:
    virtual void InsertPara() = 0;

    static OUString& DelCharAtEnd( OUString& rStr, const sal_Unicode cDel );

    // is called for each token that is recognized in CallParser
    virtual void NextToken( int nToken ) override;

    void ReadStyleTable();
    void ReadColorTable();
    void ReadFontTable();
    void ReadAttr( int nToken, SfxItemSet* pSet );
    void ReadTabAttr( int nToken, SfxItemSet& rSet );

    inline SfxItemSet& GetAttrSet();
    // no text yet inserted? (SttPos from the top stack entry!)
    bool IsAttrSttPos();
    void AttrGroupEnd();        // edit the current, delete from stack
    void SetAllAttrOfStk();     // end all Attr. and set it into doc


    virtual void InsertText() = 0;
    virtual void MovePos( bool bForward = true ) = 0;
    virtual void SetEndPrevPara( EditNodeIdx*& rpNodePos,
                                 sal_Int32& rCntPos )=0;
    virtual void SetAttrInDoc( SvxRTFItemStackType &rSet );
    // for Tokens, which are not evaluated in ReadAttr
    virtual void UnknownAttrToken( int nToken );

    // if no-one would like to have any twips
    virtual void CalcValue();

    SvxRTFParser( SfxItemPool& rAttrPool, SvStream& rIn );
    virtual ~SvxRTFParser() override;

    void SetNewDoc( bool bFlag )        { bNewDoc = bFlag; }
    bool IsChkStyleAttr() const         { return bChkStyleAttr; }
    void SetChkStyleAttr( bool bFlag )  { bChkStyleAttr = bFlag; }
    bool IsCalcValue() const            { return bCalcValue; }
    void SetCalcValue( bool bFlag )     { bCalcValue = bFlag; }

    // Query/Set the current insert position
    void SetInsPos( const EditPosition& rNew );
    SvxRTFStyleTbl& GetStyleTbl()               { return m_StyleTable; }

public:

    virtual SvParserState CallParser() override;

    inline const Color& GetColor( size_t nId ) const;
    const vcl::Font& GetFont( sal_uInt16 nId );      // Changes the default Font

    virtual bool IsEndPara( EditNodeIdx* pNd, sal_Int32 nCnt ) const = 0;

    // to set a different attribute pool. May only be done prior to CallParser!
    // The maps are not generated anew!
    void SetAttrPool( SfxItemPool* pNewPool )   { pAttrPool = pNewPool; }
    // to set different WhichIds for a different pool.
    RTFPardAttrMapIds& GetPardMap() { return aPardMap; }
    // to be able to assign them from the outside as for example table cells
    void ReadBorderAttr( int nToken, SfxItemSet& rSet, bool bTableDef=false );
    void ReadBackgroundAttr( int nToken, SfxItemSet& rSet, bool bTableDef=false  );

    // for asynchronous read from the SvStream
    virtual void Continue( int nToken ) override;

    // get RTF default ItemSets. Must be used by pard/plain tokens or in
    // reset of Style-Items
    const SfxItemSet& GetRTFDefaults();
};

// The stack for the attributes:
// this class may only be used by SvxRTFParser!
class SvxRTFItemStackType
{
    friend class SvxRTFParser;

    SfxItemSet   aAttrSet;
    std::unique_ptr<EditNodeIdx> pSttNd;
    EditNodeIdx  *pEndNd;
    sal_Int32    nSttCnt, nEndCnt;
    std::unique_ptr<SvxRTFItemStackList> m_pChildList;
    sal_uInt16   nStyleNo;

    SvxRTFItemStackType(SvxRTFItemStackType const&) = delete;
    void operator=(SvxRTFItemStackType const&) = delete;

    SvxRTFItemStackType( SfxItemPool&, const sal_uInt16* pWhichRange,
                            const EditPosition& );

    void Add(std::unique_ptr<SvxRTFItemStackType>);
    void Compress( const SvxRTFParser& );
    void DropChildList();

public:
    SvxRTFItemStackType(const SvxRTFItemStackType&, const EditPosition&,
                        bool bCopyAttr);
    ~SvxRTFItemStackType();
    //cmc, I'm very suspicious about SetStartPos, it doesn't change
    //its children's starting position, and the implementation looks
    //bad, consider this deprecated.
    void SetStartPos( const EditPosition& rPos );

    const EditNodeIdx& GetSttNode() const { return *pSttNd; }
    const EditNodeIdx& GetEndNode() const { return *pEndNd; }

    sal_Int32 GetSttCnt() const { return nSttCnt; }
    sal_Int32 GetEndCnt() const { return nEndCnt; }

          SfxItemSet& GetAttrSet()          { return aAttrSet; }
    const SfxItemSet& GetAttrSet() const    { return aAttrSet; }

    sal_uInt16 StyleNo() const  { return nStyleNo; }

    void SetRTFDefaults( const SfxItemSet& rDefaults );
};


// ----------- Inline Implementations --------------

inline const Color& SvxRTFParser::GetColor( size_t nId ) const
{
    if( nId < maColorTable.size() )
        return maColorTable[ nId ];
    return *mxDefaultColor;
}

inline SfxItemSet& SvxRTFParser::GetAttrSet()
{
    SvxRTFItemStackType* pTmp;
    if( bNewGroup || aAttrStack.empty() )
        pTmp = GetAttrSet_();
    else
    {
        pTmp = aAttrStack.back().get();
        if ( pTmp == nullptr )
            pTmp = GetAttrSet_();
    }
    return pTmp->aAttrSet;
}


#endif // INCLUDED_EDITENG_SVXRTF_HXX

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