// Copyright 2014 PDFium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
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#ifndef XFA_FDE_CFDE_TXTEDTENGINE_H_
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#define XFA_FDE_CFDE_TXTEDTENGINE_H_
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#include "xfa/fde/ifde_txtedtengine.h"
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class CFDE_TxtEdtBuf;
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class CFDE_TxtEdtParag;
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class CFX_TxtBreak;
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class IFDE_TxtEdtDoRecord;
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class IFX_CharIter;
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class CFDE_TxtEdtEngine {
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public:
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CFDE_TxtEdtEngine();
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~CFDE_TxtEdtEngine();
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void SetEditParams(const FDE_TXTEDTPARAMS& params);
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FDE_TXTEDTPARAMS* GetEditParams();
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int32_t CountPages() const;
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IFDE_TxtEdtPage* GetPage(int32_t nIndex);
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void SetTextByStream(IFX_Stream* pStream);
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void SetText(const CFX_WideString& wsText);
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int32_t GetTextLength() const;
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void GetText(CFX_WideString& wsText, int32_t nStart, int32_t nCount = -1);
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void ClearText();
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int32_t GetCaretRect(CFX_RectF& rtCaret) const;
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int32_t GetCaretPos() const;
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int32_t SetCaretPos(int32_t nIndex, FX_BOOL bBefore);
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int32_t MoveCaretPos(FDE_TXTEDTMOVECARET eMoveCaret,
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FX_BOOL bShift = FALSE,
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FX_BOOL bCtrl = FALSE);
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void Lock();
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void Unlock();
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FX_BOOL IsLocked() const;
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int32_t Insert(int32_t nStart, const FX_WCHAR* lpText, int32_t nLength);
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int32_t Delete(int32_t nStart, FX_BOOL bBackspace = FALSE);
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int32_t DeleteRange(int32_t nStart, int32_t nCount = -1);
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int32_t Replace(int32_t nStart,
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int32_t nLength,
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const CFX_WideString& wsReplace);
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void SetLimit(int32_t nLimit);
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void SetAliasChar(FX_WCHAR wcAlias);
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void RemoveSelRange(int32_t nStart, int32_t nCount = -1);
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void AddSelRange(int32_t nStart, int32_t nCount = -1);
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int32_t CountSelRanges();
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int32_t GetSelRange(int32_t nIndex, int32_t& nStart);
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void ClearSelection();
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FX_BOOL Redo(const IFDE_TxtEdtDoRecord* pRecord);
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FX_BOOL Undo(const IFDE_TxtEdtDoRecord* pRecord);
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int32_t StartLayout();
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int32_t DoLayout(IFX_Pause* pPause);
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void EndLayout();
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FX_BOOL Optimize(IFX_Pause* pPause = nullptr);
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int32_t CountParags() const;
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CFDE_TxtEdtParag* GetParag(int32_t nParagIndex) const;
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IFX_CharIter* CreateCharIter();
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CFDE_TxtEdtBuf* GetTextBuf() const;
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int32_t GetTextBufLength() const;
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CFX_TxtBreak* GetTextBreak() const;
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int32_t GetLineCount() const;
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int32_t GetPageLineCount() const;
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int32_t Line2Parag(int32_t nStartParag,
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int32_t nStartLineofParag,
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int32_t nLineIndex,
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int32_t& nStartLine) const;
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FX_WCHAR GetAliasChar() const { return m_wcAliasChar; }
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private:
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friend class CFDE_TxtEdtDoRecord_Insert;
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friend class CFDE_TxtEdtDoRecord_DeleteRange;
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friend class CFDE_TxtEdtPage;
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struct FDE_TXTEDTSELRANGE {
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int32_t nStart;
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int32_t nCount;
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};
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struct FDE_TXTEDTPARAGPOS {
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int32_t nParagIndex;
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int32_t nCharIndex;
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};
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void Inner_Insert(int32_t nStart, const FX_WCHAR* lpText, int32_t nLength);
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void GetPreDeleteText(CFX_WideString& wsText,
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int32_t nIndex,
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int32_t nLength);
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void GetPreInsertText(CFX_WideString& wsText,
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int32_t nIndex,
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const FX_WCHAR* lpText,
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int32_t nLength);
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void GetPreReplaceText(CFX_WideString& wsText,
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int32_t nIndex,
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int32_t nOriginLength,
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const FX_WCHAR* lpText,
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int32_t nLength);
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void Inner_DeleteRange(int32_t nStart, int32_t nCount = -1);
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void DeleteRange_DoRecord(int32_t nStart,
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int32_t nCount,
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FX_BOOL bSel = FALSE);
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void ResetEngine();
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void RebuildParagraphs();
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void RemoveAllParags();
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void RemoveAllPages();
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void UpdateParags();
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void UpdatePages();
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void UpdateTxtBreak();
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FX_BOOL ReplaceParagEnd(FX_WCHAR*& lpText,
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int32_t& nLength,
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FX_BOOL bPreIsCR = FALSE);
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void RecoverParagEnd(CFX_WideString& wsText);
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int32_t MovePage2Char(int32_t nIndex);
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void TextPos2ParagPos(int32_t nIndex, FDE_TXTEDTPARAGPOS& ParagPos) const;
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int32_t MoveForward(FX_BOOL& bBefore);
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int32_t MoveBackward(FX_BOOL& bBefore);
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FX_BOOL MoveUp(CFX_PointF& ptCaret);
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FX_BOOL MoveDown(CFX_PointF& ptCaret);
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FX_BOOL MoveLineStart();
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FX_BOOL MoveLineEnd();
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FX_BOOL MoveParagStart();
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FX_BOOL MoveParagEnd();
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FX_BOOL MoveHome();
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FX_BOOL MoveEnd();
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FX_BOOL IsFitArea(CFX_WideString& wsText);
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void UpdateCaretRect(int32_t nIndex, FX_BOOL bBefore = TRUE);
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void GetCaretRect(CFX_RectF& rtCaret,
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int32_t nPageIndex,
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int32_t nCaret,
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FX_BOOL bBefore = TRUE);
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void UpdateCaretIndex(const CFX_PointF& ptCaret);
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FX_BOOL IsSelect();
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void DeleteSelect();
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CFDE_TxtEdtBuf* m_pTxtBuf;
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CFX_TxtBreak* m_pTextBreak;
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FDE_TXTEDTPARAMS m_Param;
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CFX_ArrayTemplate<IFDE_TxtEdtPage*> m_PagePtrArray;
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CFX_ArrayTemplate<CFDE_TxtEdtParag*> m_ParagPtrArray;
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CFX_ArrayTemplate<FDE_TXTEDTSELRANGE*> m_SelRangePtrArr;
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int32_t m_nPageLineCount;
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int32_t m_nLineCount;
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int32_t m_nAnchorPos;
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int32_t m_nLayoutPos;
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FX_FLOAT m_fCaretPosReserve;
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int32_t m_nCaret;
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FX_BOOL m_bBefore;
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int32_t m_nCaretPage;
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CFX_RectF m_rtCaret;
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uint32_t m_dwFindFlags;
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FX_BOOL m_bLock;
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int32_t m_nLimit;
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FX_WCHAR m_wcAliasChar;
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int32_t m_nFirstLineEnd;
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FX_BOOL m_bAutoLineEnd;
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FX_WCHAR m_wLineEnd;
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FDE_TXTEDT_TEXTCHANGE_INFO m_ChangeInfo;
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};
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#endif // XFA_FDE_CFDE_TXTEDTENGINE_H_
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