Collapse xfa/src/fee directories

xfa/src/fee/src/fee/fde_txtedtengine.cpp

Index: xfa/src/fee/src/fee/fde_txtedtengine.cpp
diff --git a/xfa/src/fee/src/fee/fde_txtedtengine.cpp b/xfa/src/fee/src/fee/fde_txtedtengine.cpp
deleted file mode 100644
index cc5548900a22077f00087473eb33f8eec5954694..0000000000000000000000000000000000000000
--- a/xfa/src/fee/src/fee/fde_txtedtengine.cpp
+++ /dev/null
@@ -1,1783 +0,0 @@
-// Copyright 2014 PDFium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
-
-#include "xfa/src/fee/src/fee/fde_txtedtengine.h"
-
-#include <algorithm>
-
-#include "xfa/src/fee/include/ifde_txtedtbuf.h"
-#include "xfa/src/fee/include/ifde_txtedtengine.h"
-#include "xfa/src/fee/include/ifde_txtedtpage.h"
-#include "xfa/src/fee/src/fee/fde_txtedtbuf.h"
-#include "xfa/src/fee/src/fee/fde_txtedtparag.h"
-#include "xfa/src/fdp/include/fde_tto.h"
-
-#define FDE_PAGEWIDTH_MAX 0xFFFF
-#define FDE_TXTPLATESIZE (1024 * 12)
-#define FDE_UNICODE_PARAGRAPH_SPERATOR (0x2029)
-#define FDE_TXTEDT_DORECORD_INS 0
-#define FDE_TXTEDT_DORECORD_DEL 1
-
-IFDE_TxtEdtEngine* IFDE_TxtEdtEngine::Create() {
-  return new CFDE_TxtEdtEngine();
-}
-CFDE_TxtEdtEngine::CFDE_TxtEdtEngine()
-    : m_pTextBreak(nullptr),
-      m_nPageLineCount(20),
-      m_nLineCount(0),
-      m_nAnchorPos(-1),
-      m_nLayoutPos(0),
-      m_fCaretPosReserve(0.0),
-      m_nCaret(0),
-      m_bBefore(TRUE),
-      m_nCaretPage(0),
-      m_dwFindFlags(0),
-      m_bLock(FALSE),
-      m_nLimit(0),
-      m_wcAliasChar(L'*'),
-      m_nFirstLineEnd(FDE_TXTEDIT_LINEEND_Auto),
-      m_bAutoLineEnd(TRUE),
-      m_wLineEnd(FDE_UNICODE_PARAGRAPH_SPERATOR) {
-  FXSYS_memset(&m_rtCaret, 0, sizeof(CFX_RectF));
-  m_pTxtBuf = new CFDE_TxtEdtBuf();
-  m_bAutoLineEnd = (m_Param.nLineEnd == FDE_TXTEDIT_LINEEND_Auto);
-}
-CFDE_TxtEdtEngine::~CFDE_TxtEdtEngine() {
-  if (m_pTxtBuf) {
-    m_pTxtBuf->Release();
-    m_pTxtBuf = NULL;
-  }
-  if (m_pTextBreak) {
-    m_pTextBreak->Release();
-    m_pTextBreak = NULL;
-  }
-  RemoveAllParags();
-  RemoveAllPages();
-  m_Param.pEventSink = NULL;
-  ClearSelection();
-}
-void CFDE_TxtEdtEngine::Release() {
-  delete this;
-}
-void CFDE_TxtEdtEngine::SetEditParams(const FDE_TXTEDTPARAMS& params) {
-  if (m_pTextBreak == NULL) {
-    m_pTextBreak = IFX_TxtBreak::Create(FX_TXTBREAKPOLICY_None);
-  }
-  FXSYS_memcpy(&m_Param, &params, sizeof(FDE_TXTEDTPARAMS));
-  m_wLineEnd = params.wLineBreakChar;
-  m_bAutoLineEnd = (m_Param.nLineEnd == FDE_TXTEDIT_LINEEND_Auto);
-  UpdateTxtBreak();
-}
-const FDE_TXTEDTPARAMS* CFDE_TxtEdtEngine::GetEditParams() const {
-  return &m_Param;
-}
-int32_t CFDE_TxtEdtEngine::CountPages() const {
-  if (m_nLineCount == 0) {
-    return 0;
-  }
-  return ((m_nLineCount - 1) / m_nPageLineCount) + 1;
-}
-IFDE_TxtEdtPage* CFDE_TxtEdtEngine::GetPage(int32_t nIndex) {
-  if (m_PagePtrArray.GetSize() <= nIndex) {
-    return NULL;
-  }
-  return (IFDE_TxtEdtPage*)m_PagePtrArray[nIndex];
-}
-FX_BOOL CFDE_TxtEdtEngine::SetBufChunkSize(int32_t nChunkSize) {
-  return m_pTxtBuf->SetChunkSize(nChunkSize);
-}
-void CFDE_TxtEdtEngine::SetTextByStream(IFX_Stream* pStream) {
-  ResetEngine();
-  int32_t nIndex = 0;
-  if (pStream != NULL && pStream->GetLength()) {
-    int32_t nStreamLength = pStream->GetLength();
-    FX_BOOL bValid = TRUE;
-    if (m_nLimit > 0 && nStreamLength > m_nLimit) {
-      bValid = FALSE;
-    }
-    FX_BOOL bPreIsCR = FALSE;
-    if (bValid) {
-      uint8_t bom[4];
-      int32_t nPos = pStream->GetBOM(bom);
-      pStream->Seek(FX_STREAMSEEK_Begin, nPos);
-      int32_t nPlateSize = std::min(nStreamLength, m_pTxtBuf->GetChunkSize());
-      FX_WCHAR* lpwstr = FX_Alloc(FX_WCHAR, nPlateSize);
-      FX_BOOL bEos = false;
-      while (!bEos) {
-        int32_t nRead = pStream->ReadString(lpwstr, nPlateSize, bEos);
-        bPreIsCR = ReplaceParagEnd(lpwstr, nRead, bPreIsCR);
-        m_pTxtBuf->Insert(nIndex, lpwstr, nRead);
-        nIndex += nRead;
-      }
-      FX_Free(lpwstr);
-    }
-  }
-  m_pTxtBuf->Insert(nIndex, &m_wLineEnd, 1);
-  RebuildParagraphs();
-}
-void CFDE_TxtEdtEngine::SetText(const CFX_WideString& wsText) {
-  ResetEngine();
-  int32_t nLength = wsText.GetLength();
-  if (nLength > 0) {
-    CFX_WideString wsTemp;
-    FX_WCHAR* lpBuffer = wsTemp.GetBuffer(nLength);
-    FXSYS_memcpy(lpBuffer, wsText.c_str(), nLength * sizeof(FX_WCHAR));
-    ReplaceParagEnd(lpBuffer, nLength, FALSE);
-    wsTemp.ReleaseBuffer(nLength);
-    if (m_nLimit > 0 && nLength > m_nLimit) {
-      wsTemp.Delete(m_nLimit, nLength - m_nLimit);
-      nLength = m_nLimit;
-    }
-    m_pTxtBuf->SetText(wsTemp);
-  }
-  m_pTxtBuf->Insert(nLength, &m_wLineEnd, 1);
-  RebuildParagraphs();
-}
-int32_t CFDE_TxtEdtEngine::GetTextLength() const {
-  return GetTextBufLength();
-}
-void CFDE_TxtEdtEngine::GetText(CFX_WideString& wsText,
-                                int32_t nStart,
-                                int32_t nCount) {
-  int32_t nTextBufLength = GetTextBufLength();
-  if (nCount == -1) {
-    nCount = nTextBufLength - nStart;
-  }
-  m_pTxtBuf->GetRange(wsText, nStart, nCount);
-  RecoverParagEnd(wsText);
-}
-
-void CFDE_TxtEdtEngine::ClearText() {
-  DeleteRange(0, -1);
-}
-int32_t CFDE_TxtEdtEngine::GetCaretRect(CFX_RectF& rtCaret) const {
-  rtCaret = m_rtCaret;
-  return m_nCaret;
-}
-int32_t CFDE_TxtEdtEngine::GetCaretPos() const {
-  if (IsLocked()) {
-    return 0;
-  }
-  return m_nCaret + (m_bBefore ? 0 : 1);
-}
-int32_t CFDE_TxtEdtEngine::SetCaretPos(int32_t nIndex, FX_BOOL bBefore) {
-  if (IsLocked()) {
-    return 0;
-  }
-  FXSYS_assert(nIndex >= 0 && nIndex <= GetTextBufLength());
-  if (m_PagePtrArray.GetSize() <= m_nCaretPage) {
-    return 0;
-  }
-  m_bBefore = bBefore;
-  m_nCaret = nIndex;
-  MovePage2Char(m_nCaret);
-  GetCaretRect(m_rtCaret, m_nCaretPage, m_nCaret, m_bBefore);
-  if (!m_bBefore) {
-    m_nCaret++;
-    m_bBefore = TRUE;
-  }
-  m_fCaretPosReserve = (m_Param.dwLayoutStyles & FDE_TEXTEDITLAYOUT_DocVertical)
-                           ? m_rtCaret.top
-                           : m_rtCaret.left;
-  m_Param.pEventSink->On_CaretChanged(this, m_nCaretPage, 0);
-  m_nAnchorPos = -1;
-  return m_nCaret;
-}
-int32_t CFDE_TxtEdtEngine::MoveCaretPos(FDE_TXTEDTMOVECARET eMoveCaret,
-                                        FX_BOOL bShift,
-                                        FX_BOOL bCtrl) {
-  if (IsLocked()) {
-    return 0;
-  }
-  if (m_PagePtrArray.GetSize() <= m_nCaretPage) {
-    return 0;
-  }
-  FX_BOOL bSelChange = FALSE;
-  if (IsSelect()) {
-    ClearSelection();
-    bSelChange = TRUE;
-  }
-  if (bShift) {
-    if (m_nAnchorPos == -1) {
-      m_nAnchorPos = m_nCaret;
-    }
-  } else {
-    m_nAnchorPos = -1;
-  }
-  FX_BOOL bVertical = m_Param.dwLayoutStyles & FDE_TEXTEDITLAYOUT_DocVertical;
-  switch (eMoveCaret) {
-    case MC_Left: {
-      if (bVertical) {
-        CFX_PointF ptCaret;
-        if (MoveUp(ptCaret)) {
-          UpdateCaretIndex(ptCaret);
-        }
-      } else {
-        FX_BOOL bBefore = TRUE;
-        int32_t nIndex = MoveBackward(bBefore);
-        if (nIndex >= 0) {
-          UpdateCaretRect(nIndex, bBefore);
-        }
-      }
-    } break;
-    case MC_Right: {
-      if (bVertical) {
-        CFX_PointF ptCaret;
-        if (MoveDown(ptCaret)) {
-          UpdateCaretIndex(ptCaret);
-        }
-      } else {
-        FX_BOOL bBefore = TRUE;
-        int32_t nIndex = MoveForward(bBefore);
-        if (nIndex >= 0) {
-          UpdateCaretRect(nIndex, bBefore);
-        }
-      }
-    } break;
-    case MC_Up: {
-      if (bVertical) {
-        FX_BOOL bBefore = TRUE;
-        int32_t nIndex = MoveBackward(bBefore);
-        if (nIndex >= 0) {
-          UpdateCaretRect(nIndex, bBefore);
-        }
-      } else {
-        CFX_PointF ptCaret;
-        if (MoveUp(ptCaret)) {
-          UpdateCaretIndex(ptCaret);
-        }
-      }
-    } break;
-    case MC_Down: {
-      if (bVertical) {
-        FX_BOOL bBefore = TRUE;
-        int32_t nIndex = MoveForward(bBefore);
-        if (nIndex >= 0) {
-          UpdateCaretRect(nIndex, bBefore);
-        }
-      } else {
-        CFX_PointF ptCaret;
-        if (MoveDown(ptCaret)) {
-          UpdateCaretIndex(ptCaret);
-        }
-      }
-    } break;
-    case MC_WordBackward:
-      break;
-    case MC_WordForward:
-      break;
-    case MC_LineStart:
-      MoveLineStart();
-      break;
-    case MC_LineEnd:
-      MoveLineEnd();
-      break;
-    case MC_ParagStart:
-      MoveParagStart();
-      break;
-    case MC_ParagEnd:
-      MoveParagEnd();
-      break;
-    case MC_PageDown:
-      break;
-    case MC_PageUp:
-      break;
-    case MC_Home:
-      MoveHome();
-      break;
-    case MC_End:
-      MoveEnd();
-      break;
-    default:
-      break;
-  }
-  if (bShift && m_nAnchorPos != -1 && (m_nAnchorPos != m_nCaret)) {
-    AddSelRange(std::min(m_nAnchorPos, m_nCaret),
-                FXSYS_abs(m_nAnchorPos - m_nCaret));
-    m_Param.pEventSink->On_SelChanged(this);
-  }
-  if (bSelChange) {
-    m_Param.pEventSink->On_SelChanged(this);
-  }
-  return m_nCaret;
-}
-void CFDE_TxtEdtEngine::Lock() {
-  m_bLock = TRUE;
-}
-void CFDE_TxtEdtEngine::Unlock() {
-  m_bLock = FALSE;
-}
-FX_BOOL CFDE_TxtEdtEngine::IsLocked() const {
-  return m_bLock;
-}
-int32_t CFDE_TxtEdtEngine::Insert(int32_t nStart,
-                                  const FX_WCHAR* lpText,
-                                  int32_t nLength) {
-  if (IsLocked()) {
-    return FDE_TXTEDT_MODIFY_RET_F_Locked;
-  }
-  CFX_WideString wsTemp;
-  FX_WCHAR* lpBuffer = wsTemp.GetBuffer(nLength);
-  FXSYS_memcpy(lpBuffer, lpText, nLength * sizeof(FX_WCHAR));
-  ReplaceParagEnd(lpBuffer, nLength, FALSE);
-  wsTemp.ReleaseBuffer(nLength);
-  FX_BOOL bPart = FALSE;
-  if (m_nLimit > 0) {
-    int32_t nTotalLength = GetTextBufLength();
-    int32_t nCount = m_SelRangePtrArr.GetSize();
-    for (int32_t i = 0; i < nCount; i++) {
-      FDE_LPTXTEDTSELRANGE lpSelRange = m_SelRangePtrArr.GetAt(i);
-      nTotalLength -= lpSelRange->nCount;
-    }
-    int32_t nExpectLength = nTotalLength + nLength;
-    if (nTotalLength == m_nLimit) {
-      return FDE_TXTEDT_MODIFY_RET_F_Full;
-    }
-    if (nExpectLength > m_nLimit) {
-      nLength -= (nExpectLength - m_nLimit);
-      bPart = TRUE;
-    }
-  }
-  if ((m_Param.dwMode & FDE_TEXTEDITMODE_LimitArea_Vert) ||
-      (m_Param.dwMode & FDE_TEXTEDITMODE_LimitArea_Horz)) {
-    int32_t nTemp = nLength;
-    if (m_Param.dwMode & FDE_TEXTEDITMODE_Password) {
-      CFX_WideString wsText;
-      while (nLength > 0) {
-        GetPreInsertText(wsText, m_nCaret, lpBuffer, nLength);
-        int32_t nTotal = wsText.GetLength();
-        FX_WCHAR* lpBuf = wsText.GetBuffer(nTotal);
-        for (int32_t i = 0; i < nTotal; i++) {
-          lpBuf[i] = m_wcAliasChar;
-        }
-        wsText.ReleaseBuffer(nTotal);
-        if (IsFitArea(wsText)) {
-          break;
-        }
-        nLength--;
-      }
-    } else {
-      CFX_WideString wsText;
-      while (nLength > 0) {
-        GetPreInsertText(wsText, m_nCaret, lpBuffer, nLength);
-        if (IsFitArea(wsText)) {
-          break;
-        }
-        nLength--;
-      }
-    }
-    if (nLength == 0) {
-      return FDE_TXTEDT_MODIFY_RET_F_Full;
-    }
-    if (nLength < nTemp) {
-      bPart = TRUE;
-    }
-  }
-  if (m_Param.dwMode & FDE_TEXTEDITMODE_Validate) {
-    CFX_WideString wsText;
-    GetPreInsertText(wsText, m_nCaret, lpBuffer, nLength);
-    if (!m_Param.pEventSink->On_Validate(this, wsText)) {
-      return FDE_TXTEDT_MODIFY_RET_F_Invalidate;
-    }
-  }
-  if (IsSelect()) {
-    DeleteSelect();
-  }
-  if (!(m_Param.dwMode & FDE_TEXTEDITMODE_NoRedoUndo)) {
-    IFDE_TxtEdtDoRecord* pRecord =
-        new CFDE_TxtEdtDoRecord_Insert(this, m_nCaret, lpBuffer, nLength);
-    CFX_ByteString bsDoRecord;
-    pRecord->Serialize(bsDoRecord);
-    m_Param.pEventSink->On_AddDoRecord(this, bsDoRecord);
-    pRecord->Release();
-  }
-  GetText(m_ChangeInfo.wsPrevText, 0);
-  Inner_Insert(m_nCaret, lpBuffer, nLength);
-  m_ChangeInfo.nChangeType = FDE_TXTEDT_TEXTCHANGE_TYPE_Insert;
-  m_ChangeInfo.wsInsert = CFX_WideString(lpBuffer, nLength);
-  nStart = m_nCaret;
-  nStart += nLength;
-  FX_WCHAR wChar = m_pTxtBuf->GetCharByIndex(nStart - 1);
-  FX_BOOL bBefore = TRUE;
-  if (wChar != L'\n' && wChar != L'\r') {
-    nStart--;
-    bBefore = FALSE;
-  }
-  SetCaretPos(nStart, bBefore);
-  m_Param.pEventSink->On_TextChanged(this, m_ChangeInfo);
-  return bPart ? FDE_TXTEDT_MODIFY_RET_S_Part : FDE_TXTEDT_MODIFY_RET_S_Normal;
-}
-int32_t CFDE_TxtEdtEngine::Delete(int32_t nStart, FX_BOOL bBackspace) {
-  if (IsLocked()) {
-    return FDE_TXTEDT_MODIFY_RET_F_Locked;
-  }
-  if (IsSelect()) {
-    DeleteSelect();
-    return FDE_TXTEDT_MODIFY_RET_S_Normal;
-  }
-
-  int32_t nCount = 1;
-  if (bBackspace) {
-    if (nStart == 0) {
-      return FDE_TXTEDT_MODIFY_RET_F_Boundary;
-    }
-    if (nStart > 2 && m_pTxtBuf->GetCharByIndex(nStart - 1) == L'\n' &&
-        m_pTxtBuf->GetCharByIndex(nStart - 2) == L'\r') {
-      nStart--;
-      nCount++;
-    }
-    nStart--;
-  } else {
-    if (nStart == GetTextBufLength()) {
-      return FDE_TXTEDT_MODIFY_RET_F_Full;
-    }
-    if ((nStart + 1 < GetTextBufLength()) &&
-        (m_pTxtBuf->GetCharByIndex(nStart) == L'\r') &&
-        (m_pTxtBuf->GetCharByIndex(nStart + 1) == L'\n')) {
-      nCount++;
-    }
-  }
-  if (m_Param.dwMode & FDE_TEXTEDITMODE_Validate) {
-    CFX_WideString wsText;
-    GetPreDeleteText(wsText, nStart, nCount);
-    if (!m_Param.pEventSink->On_Validate(this, wsText)) {
-      return FDE_TXTEDT_MODIFY_RET_F_Invalidate;
-    }
-  }
-  if (!(m_Param.dwMode & FDE_TEXTEDITMODE_NoRedoUndo)) {
-    CFX_WideString wsRange;
-    m_pTxtBuf->GetRange(wsRange, nStart, nCount);
-    IFDE_TxtEdtDoRecord* pRecord =
-        new CFDE_TxtEdtDoRecord_DeleteRange(this, nStart, m_nCaret, wsRange);
-    CFX_ByteString bsDoRecord;
-    pRecord->Serialize(bsDoRecord);
-    m_Param.pEventSink->On_AddDoRecord(this, bsDoRecord);
-    pRecord->Release();
-  }
-  m_ChangeInfo.nChangeType = FDE_TXTEDT_TEXTCHANGE_TYPE_Delete;
-  GetText(m_ChangeInfo.wsDelete, nStart, nCount);
-  Inner_DeleteRange(nStart, nCount);
-  SetCaretPos(nStart + ((!bBackspace && nStart > 0) ? -1 : 0),
-              (bBackspace || nStart == 0));
-  m_Param.pEventSink->On_TextChanged(this, m_ChangeInfo);
-  return FDE_TXTEDT_MODIFY_RET_S_Normal;
-}
-int32_t CFDE_TxtEdtEngine::DeleteRange(int32_t nStart, int32_t nCount) {
-  if (IsLocked()) {
-    return FDE_TXTEDT_MODIFY_RET_F_Locked;
-  }
-  if (nCount == -1) {
-    nCount = GetTextBufLength();
-  }
-  if (nCount == 0) {
-    return FDE_TXTEDT_MODIFY_RET_S_Normal;
-  }
-  if (m_Param.dwMode & FDE_TEXTEDITMODE_Validate) {
-    CFX_WideString wsText;
-    GetPreDeleteText(wsText, nStart, nCount);
-    if (!m_Param.pEventSink->On_Validate(this, wsText)) {
-      return FDE_TXTEDT_MODIFY_RET_F_Invalidate;
-    }
-  }
-  DeleteRange_DoRecord(nStart, nCount);
-  m_Param.pEventSink->On_TextChanged(this, m_ChangeInfo);
-  SetCaretPos(nStart, TRUE);
-  return FDE_TXTEDT_MODIFY_RET_S_Normal;
-}
-int32_t CFDE_TxtEdtEngine::Replace(int32_t nStart,
-                                   int32_t nLength,
-                                   const CFX_WideString& wsReplace) {
-  if (IsLocked()) {
-    return FDE_TXTEDT_MODIFY_RET_F_Locked;
-  }
-  if (nStart < 0 || (nStart + nLength > GetTextBufLength())) {
-    return FDE_TXTEDT_MODIFY_RET_F_Boundary;
-  }
-  if (m_Param.dwMode & FDE_TEXTEDITMODE_Validate) {
-    CFX_WideString wsText;
-    GetPreReplaceText(wsText, nStart, nLength, wsReplace.c_str(),
-                      wsReplace.GetLength());
-    if (!m_Param.pEventSink->On_Validate(this, wsText)) {
-      return FDE_TXTEDT_MODIFY_RET_F_Invalidate;
-    }
-  }
-  if (IsSelect()) {
-    ClearSelection();
-  }
-  m_ChangeInfo.nChangeType = FDE_TXTEDT_TEXTCHANGE_TYPE_Replace;
-  GetText(m_ChangeInfo.wsDelete, nStart, nLength);
-  if (nLength > 0) {
-    Inner_DeleteRange(nStart, nLength);
-  }
-  int32_t nTextLength = wsReplace.GetLength();
-  if (nTextLength > 0) {
-    Inner_Insert(nStart, wsReplace.c_str(), nTextLength);
-  }
-  m_ChangeInfo.wsInsert = CFX_WideString(wsReplace.c_str(), nTextLength);
-  nStart += nTextLength;
-  FX_WCHAR wChar = m_pTxtBuf->GetCharByIndex(nStart - 1);
-  FX_BOOL bBefore = TRUE;
-  if (wChar != L'\n' && wChar != L'\r') {
-    nStart--;
-    bBefore = FALSE;
-  }
-  SetCaretPos(nStart, bBefore);
-  m_Param.pEventSink->On_PageUnload(this, m_nCaretPage, 0);
-  m_Param.pEventSink->On_PageLoad(this, m_nCaretPage, 0);
-  m_Param.pEventSink->On_TextChanged(this, m_ChangeInfo);
-  return FDE_TXTEDT_MODIFY_RET_S_Normal;
-}
-void CFDE_TxtEdtEngine::SetLimit(int32_t nLimit) {
-  m_nLimit = nLimit;
-}
-void CFDE_TxtEdtEngine::SetAliasChar(FX_WCHAR wcAlias) {
-  m_wcAliasChar = wcAlias;
-}
-
-void CFDE_TxtEdtEngine::RemoveSelRange(int32_t nStart, int32_t nCount) {
-  FDE_LPTXTEDTSELRANGE lpTemp = NULL;
-  int32_t nRangeCount = m_SelRangePtrArr.GetSize();
-  int32_t i = 0;
-  for (i = 0; i < nRangeCount; i++) {
-    lpTemp = m_SelRangePtrArr[i];
-    if (lpTemp->nStart == nStart && lpTemp->nCount == nCount) {
-      delete lpTemp;
-      m_SelRangePtrArr.RemoveAt(i);
-      return;
-    }
-  }
-}
-
-void CFDE_TxtEdtEngine::AddSelRange(int32_t nStart, int32_t nCount) {
-  if (nCount == -1) {
-    nCount = GetTextLength() - nStart;
-  }
-  int32_t nSize = m_SelRangePtrArr.GetSize();
-  if (nSize <= 0) {
-    FDE_LPTXTEDTSELRANGE lpSelRange = new FDE_TXTEDTSELRANGE;
-    lpSelRange->nStart = nStart;
-    lpSelRange->nCount = nCount;
-    m_SelRangePtrArr.Add(lpSelRange);
-    m_Param.pEventSink->On_SelChanged(this);
-    return;
-  }
-  FDE_LPTXTEDTSELRANGE lpTemp = NULL;
-  lpTemp = m_SelRangePtrArr[nSize - 1];
-  if (nStart >= lpTemp->nStart + lpTemp->nCount) {
-    FDE_LPTXTEDTSELRANGE lpSelRange = new FDE_TXTEDTSELRANGE;
-    lpSelRange->nStart = nStart;
-    lpSelRange->nCount = nCount;
-    m_SelRangePtrArr.Add(lpSelRange);
-    m_Param.pEventSink->On_SelChanged(this);
-    return;
-  }
-  int32_t nEnd = nStart + nCount - 1;
-  FX_BOOL bBegin = FALSE;
-  int32_t nRangeBgn = 0;
-  int32_t nRangeCnt = 0;
-  for (int32_t i = 0; i < nSize; i++) {
-    lpTemp = m_SelRangePtrArr[i];
-    int32_t nTempBgn = lpTemp->nStart;
-    int32_t nTempEnd = nTempBgn + lpTemp->nCount - 1;
-    if (bBegin) {
-      if (nEnd < nTempBgn) {
-        break;
-      } else if (nStart >= nTempBgn && nStart <= nTempEnd) {
-        nRangeCnt++;
-        break;
-      }
-      nRangeCnt++;
-    } else {
-      if (nStart <= nTempEnd) {
-        nRangeBgn = i;
-        if (nEnd < nTempBgn) {
-          break;
-        }
-        nRangeCnt = 1;
-        bBegin = TRUE;
-      }
-    }
-  }
-  if (nRangeCnt == 0) {
-    FDE_LPTXTEDTSELRANGE lpSelRange = new FDE_TXTEDTSELRANGE;
-    lpSelRange->nStart = nStart;
-    lpSelRange->nCount = nCount;
-    m_SelRangePtrArr.InsertAt(nRangeBgn, lpSelRange);
-  } else {
-    lpTemp = m_SelRangePtrArr[nRangeBgn];
-    lpTemp->nStart = nStart;
-    lpTemp->nCount = nCount;
-    nRangeCnt--;
-    nRangeBgn++;
-    while (nRangeCnt--) {
-      delete m_SelRangePtrArr[nRangeBgn];
-      m_SelRangePtrArr.RemoveAt(nRangeBgn);
-    }
-  }
-  m_Param.pEventSink->On_SelChanged(this);
-}
-
-int32_t CFDE_TxtEdtEngine::CountSelRanges() {
-  return m_SelRangePtrArr.GetSize();
-}
-int32_t CFDE_TxtEdtEngine::GetSelRange(int32_t nIndex, int32_t& nStart) {
-  nStart = m_SelRangePtrArr[nIndex]->nStart;
-  return m_SelRangePtrArr[nIndex]->nCount;
-}
-void CFDE_TxtEdtEngine::ClearSelection() {
-  int32_t nCount = m_SelRangePtrArr.GetSize();
-  FDE_LPTXTEDTSELRANGE lpRange = NULL;
-  int32_t i = 0;
-  for (i = 0; i < nCount; i++) {
-    lpRange = m_SelRangePtrArr[i];
-    if (lpRange != NULL) {
-      delete lpRange;
-      lpRange = NULL;
-    }
-  }
-  m_SelRangePtrArr.RemoveAll();
-  if (nCount && m_Param.pEventSink) {
-    m_Param.pEventSink->On_SelChanged(this);
-  }
-}
-FX_BOOL CFDE_TxtEdtEngine::Redo(const CFX_ByteStringC& bsRedo) {
-  if (IsLocked()) {
-    return FALSE;
-  }
-  if (m_Param.dwMode & FDE_TEXTEDITMODE_NoRedoUndo) {
-    return FALSE;
-  }
-  IFDE_TxtEdtDoRecord* pDoRecord = IFDE_TxtEdtDoRecord::Create(bsRedo);
-  FXSYS_assert(pDoRecord);
-  if (pDoRecord == NULL) {
-    return FALSE;
-  }
-  FX_BOOL bOK = pDoRecord->Redo();
-  pDoRecord->Release();
-  return bOK;
-}
-FX_BOOL CFDE_TxtEdtEngine::Undo(const CFX_ByteStringC& bsUndo) {
-  if (IsLocked()) {
-    return FALSE;
-  }
-  if (m_Param.dwMode & FDE_TEXTEDITMODE_NoRedoUndo) {
-    return FALSE;
-  }
-  IFDE_TxtEdtDoRecord* pDoRecord = IFDE_TxtEdtDoRecord::Create(bsUndo);
-  FXSYS_assert(pDoRecord);
-  if (pDoRecord == NULL) {
-    return FALSE;
-  }
-  FX_BOOL bOK = pDoRecord->Undo();
-  pDoRecord->Release();
-  return bOK;
-}
-int32_t CFDE_TxtEdtEngine::StartLayout() {
-  Lock();
-  RemoveAllPages();
-  m_nLayoutPos = 0;
-  m_nLineCount = 0;
-  return 0;
-}
-int32_t CFDE_TxtEdtEngine::DoLayout(IFX_Pause* pPause) {
-  int32_t nCount = m_ParagPtrArray.GetSize();
-  CFDE_TxtEdtParag* pParag = NULL;
-  int32_t nLineCount = 0;
-  for (; m_nLayoutPos < nCount; m_nLayoutPos++) {
-    pParag = m_ParagPtrArray[m_nLayoutPos];
-    pParag->CalcLines();
-    nLineCount += pParag->m_nLineCount;
-    if ((pPause != NULL) && (nLineCount > m_nPageLineCount) &&
-        pPause->NeedToPauseNow()) {
-      m_nLineCount += nLineCount;
-      return (++m_nLayoutPos * 100) / nCount;
-    }
-  }
-  m_nLineCount += nLineCount;
-  return 100;
-}
-void CFDE_TxtEdtEngine::EndLayout() {
-  UpdatePages();
-  int32_t nLength = GetTextLength();
-  if (m_nCaret > nLength) {
-    m_nCaret = nLength;
-  }
-  int32_t nIndex = m_nCaret;
-  if (!m_bBefore) {
-    nIndex--;
-  }
-  m_rtCaret.Set(0, 0, 1, m_Param.fFontSize);
-  Unlock();
-}
-FX_BOOL CFDE_TxtEdtEngine::Optimize(IFX_Pause* pPause) {
-  return m_pTxtBuf->Optimize(pPause);
-}
-IFDE_TxtEdtBuf* CFDE_TxtEdtEngine::GetTextBuf() const {
-  return (IFDE_TxtEdtBuf*)m_pTxtBuf;
-}
-int32_t CFDE_TxtEdtEngine::GetTextBufLength() const {
-  return m_pTxtBuf->GetTextLength() - 1;
-}
-IFX_TxtBreak* CFDE_TxtEdtEngine::GetTextBreak() const {
-  return m_pTextBreak;
-}
-int32_t CFDE_TxtEdtEngine::GetLineCount() const {
-  return m_nLineCount;
-}
-int32_t CFDE_TxtEdtEngine::GetPageLineCount() const {
-  return m_nPageLineCount;
-}
-int32_t CFDE_TxtEdtEngine::CountParags() const {
-  return m_ParagPtrArray.GetSize();
-}
-IFDE_TxtEdtParag* CFDE_TxtEdtEngine::GetParag(int32_t nParagIndex) const {
-  return m_ParagPtrArray[nParagIndex];
-}
-IFX_CharIter* CFDE_TxtEdtEngine::CreateCharIter() {
-  if (!m_pTxtBuf) {
-    return NULL;
-  }
-  return new CFDE_TxtEdtBufIter((CFDE_TxtEdtBuf*)m_pTxtBuf);
-}
-int32_t CFDE_TxtEdtEngine::Line2Parag(int32_t nStartParag,
-                                      int32_t nStartLineofParag,
-                                      int32_t nLineIndex,
-                                      int32_t& nStartLine) const {
-  int32_t nLineTotal = nStartLineofParag;
-  int32_t nCount = m_ParagPtrArray.GetSize();
-  CFDE_TxtEdtParag* pParag = NULL;
-  int32_t i = nStartParag;
-  for (; i < nCount; i++) {
-    pParag = m_ParagPtrArray[i];
-    nLineTotal += pParag->m_nLineCount;
-    if (nLineTotal > nLineIndex) {
-      break;
-    }
-  }
-  nStartLine = nLineTotal - pParag->m_nLineCount;
-  return i;
-}
-void CFDE_TxtEdtEngine::GetPreDeleteText(CFX_WideString& wsText,
-                                         int32_t nIndex,
-                                         int32_t nLength) {
-  GetText(wsText, 0, GetTextBufLength());
-  wsText.Delete(nIndex, nLength);
-}
-void CFDE_TxtEdtEngine::GetPreInsertText(CFX_WideString& wsText,
-                                         int32_t nIndex,
-                                         const FX_WCHAR* lpText,
-                                         int32_t nLength) {
-  GetText(wsText, 0, GetTextBufLength());
-  int32_t nSelIndex = 0;
-  int32_t nSelLength = 0;
-  int32_t nSelCount = CountSelRanges();
-  while (nSelCount--) {
-    nSelLength = GetSelRange(nSelCount, nSelIndex);
-    wsText.Delete(nSelIndex, nSelLength);
-    nIndex = nSelIndex;
-  }
-  CFX_WideString wsTemp;
-  int32_t nOldLength = wsText.GetLength();
-  const FX_WCHAR* pOldBuffer = wsText.c_str();
-  FX_WCHAR* lpBuffer = wsTemp.GetBuffer(nOldLength + nLength);
-  FXSYS_memcpy(lpBuffer, pOldBuffer, (nIndex) * sizeof(FX_WCHAR));
-  FXSYS_memcpy(lpBuffer + nIndex, lpText, nLength * sizeof(FX_WCHAR));
-  FXSYS_memcpy(lpBuffer + nIndex + nLength, pOldBuffer + nIndex,
-               (nOldLength - nIndex) * sizeof(FX_WCHAR));
-  wsTemp.ReleaseBuffer(nOldLength + nLength);
-  wsText = wsTemp;
-}
-void CFDE_TxtEdtEngine::GetPreReplaceText(CFX_WideString& wsText,
-                                          int32_t nIndex,
-                                          int32_t nOriginLength,
-                                          const FX_WCHAR* lpText,
-                                          int32_t nLength) {
-  GetText(wsText, 0, GetTextBufLength());
-  int32_t nSelIndex = 0;
-  int32_t nSelLength = 0;
-  int32_t nSelCount = CountSelRanges();
-  while (nSelCount--) {
-    nSelLength = GetSelRange(nSelCount, nSelIndex);
-    wsText.Delete(nSelIndex, nSelLength);
-  }
-  wsText.Delete(nIndex, nOriginLength);
-  int32_t i = 0;
-  for (i = 0; i < nLength; i++) {
-    wsText.Insert(nIndex++, lpText[i]);
-  }
-}
-void CFDE_TxtEdtEngine::Inner_Insert(int32_t nStart,
-                                     const FX_WCHAR* lpText,
-                                     int32_t nLength) {
-  FXSYS_assert(nLength > 0);
-  FDE_TXTEDTPARAGPOS ParagPos;
-  TextPos2ParagPos(nStart, ParagPos);
-  m_Param.pEventSink->On_PageUnload(this, m_nCaretPage, 0);
-  int32_t nParagCount = m_ParagPtrArray.GetSize();
-  int32_t i = 0;
-  for (i = ParagPos.nParagIndex + 1; i < nParagCount; i++) {
-    m_ParagPtrArray[i]->m_nCharStart += nLength;
-  }
-  CFDE_TxtEdtParag* pParag = m_ParagPtrArray[ParagPos.nParagIndex];
-  int32_t nReserveLineCount = pParag->m_nLineCount;
-  int32_t nReserveCharStart = pParag->m_nCharStart;
-  int32_t nLeavePart = ParagPos.nCharIndex;
-  int32_t nCutPart = pParag->m_nCharCount - ParagPos.nCharIndex;
-  int32_t nTextStart = 0;
-  FX_WCHAR wCurChar = L' ';
-  const FX_WCHAR* lpPos = lpText;
-  FX_BOOL bFirst = TRUE;
-  int32_t nParagIndex = ParagPos.nParagIndex;
-  for (i = 0; i < nLength; i++, lpPos++) {
-    wCurChar = *lpPos;
-    if (wCurChar == m_wLineEnd) {
-      if (bFirst) {
-        pParag->m_nCharCount = nLeavePart + (i - nTextStart + 1);
-        pParag->m_nLineCount = -1;
-        nReserveCharStart += pParag->m_nCharCount;
-        bFirst = FALSE;
-      } else {
-        pParag = new CFDE_TxtEdtParag(this);
-        pParag->m_nLineCount = -1;
-        pParag->m_nCharCount = i - nTextStart + 1;
-        pParag->m_nCharStart = nReserveCharStart;
-        m_ParagPtrArray.InsertAt(++nParagIndex, pParag);
-        nReserveCharStart += pParag->m_nCharCount;
-      }
-      nTextStart = i + 1;
-    }
-  }
-  if (bFirst) {
-    pParag->m_nCharCount += nLength;
-    pParag->m_nLineCount = -1;
-    bFirst = FALSE;
-  } else {
-    pParag = new CFDE_TxtEdtParag(this);
-    pParag->m_nLineCount = -1;
-    pParag->m_nCharCount = nLength - nTextStart + nCutPart;
-    pParag->m_nCharStart = nReserveCharStart;
-    m_ParagPtrArray.InsertAt(++nParagIndex, pParag);
-  }
-  m_pTxtBuf->Insert(nStart, lpText, nLength);
-  int32_t nTotalLineCount = 0;
-  for (i = ParagPos.nParagIndex; i <= nParagIndex; i++) {
-    pParag = m_ParagPtrArray[i];
-    pParag->CalcLines();
-    nTotalLineCount += pParag->m_nLineCount;
-  }
-  m_nLineCount += nTotalLineCount - nReserveLineCount;
-  m_Param.pEventSink->On_PageLoad(this, m_nCaretPage, 0);
-  UpdatePages();
-}
-
-void CFDE_TxtEdtEngine::Inner_DeleteRange(int32_t nStart, int32_t nCount) {
-  if (nCount == -1) {
-    nCount = m_pTxtBuf->GetTextLength() - nStart;
-  }
-  int32_t nEnd = nStart + nCount - 1;
-  FXSYS_assert(nStart >= 0 && nEnd < m_pTxtBuf->GetTextLength());
-  m_Param.pEventSink->On_PageUnload(this, m_nCaretPage, 0);
-  FDE_TXTEDTPARAGPOS ParagPosBgn, ParagPosEnd;
-  TextPos2ParagPos(nStart, ParagPosBgn);
-  TextPos2ParagPos(nEnd, ParagPosEnd);
-  CFDE_TxtEdtParag* pParag = m_ParagPtrArray[ParagPosEnd.nParagIndex];
-  FX_BOOL bLastParag = FALSE;
-  if (ParagPosEnd.nCharIndex == pParag->m_nCharCount - 1) {
-    if (ParagPosEnd.nParagIndex < m_ParagPtrArray.GetSize() - 1) {
-      ParagPosEnd.nParagIndex++;
-    } else {
-      bLastParag = TRUE;
-    }
-  }
-  int32_t nTotalLineCount = 0;
-  int32_t nTotalCharCount = 0;
-  int32_t i = 0;
-  for (i = ParagPosBgn.nParagIndex; i <= ParagPosEnd.nParagIndex; i++) {
-    CFDE_TxtEdtParag* pParag = m_ParagPtrArray[i];
-    pParag->CalcLines();
-    nTotalLineCount += pParag->m_nLineCount;
-    nTotalCharCount += pParag->m_nCharCount;
-  }
-  m_pTxtBuf->Delete(nStart, nCount);
-  int32_t nNextParagIndex = (ParagPosBgn.nCharIndex == 0 && bLastParag)
-                                ? ParagPosBgn.nParagIndex
-                                : (ParagPosBgn.nParagIndex + 1);
-  for (i = nNextParagIndex; i <= ParagPosEnd.nParagIndex; i++) {
-    CFDE_TxtEdtParag* pParag = m_ParagPtrArray[nNextParagIndex];
-    delete pParag;
-    m_ParagPtrArray.RemoveAt(nNextParagIndex);
-  }
-  if (!(bLastParag && ParagPosBgn.nCharIndex == 0)) {
-    pParag = m_ParagPtrArray[ParagPosBgn.nParagIndex];
-    pParag->m_nCharCount = nTotalCharCount - nCount;
-    pParag->CalcLines();
-    nTotalLineCount -= pParag->m_nLineCount;
-  }
-  int32_t nParagCount = m_ParagPtrArray.GetSize();
-  for (i = nNextParagIndex; i < nParagCount; i++) {
-    m_ParagPtrArray[i]->m_nCharStart -= nCount;
-  }
-  m_nLineCount -= nTotalLineCount;
-  UpdatePages();
-  int32_t nPageCount = CountPages();
-  if (m_nCaretPage >= nPageCount) {
-    m_nCaretPage = nPageCount - 1;
-  }
-  m_Param.pEventSink->On_PageLoad(this, m_nCaretPage, 0);
-}
-void CFDE_TxtEdtEngine::DeleteRange_DoRecord(int32_t nStart,
-                                             int32_t nCount,
-                                             FX_BOOL bSel) {
-  FXSYS_assert(nStart >= 0);
-  if (nCount == -1) {
-    nCount = GetTextLength() - nStart;
-  }
-  FXSYS_assert((nStart + nCount) <= m_pTxtBuf->GetTextLength());
-
-  if (!(m_Param.dwMode & FDE_TEXTEDITMODE_NoRedoUndo)) {
-    CFX_WideString wsRange;
-    m_pTxtBuf->GetRange(wsRange, nStart, nCount);
-    IFDE_TxtEdtDoRecord* pRecord = new CFDE_TxtEdtDoRecord_DeleteRange(
-        this, nStart, m_nCaret, wsRange, bSel);
-    CFX_ByteString bsDoRecord;
-    pRecord->Serialize(bsDoRecord);
-    m_Param.pEventSink->On_AddDoRecord(this, bsDoRecord);
-    pRecord->Release();
-  }
-  m_ChangeInfo.nChangeType = FDE_TXTEDT_TEXTCHANGE_TYPE_Delete;
-  GetText(m_ChangeInfo.wsDelete, nStart, nCount);
-  Inner_DeleteRange(nStart, nCount);
-}
-void CFDE_TxtEdtEngine::ResetEngine() {
-  RemoveAllPages();
-  RemoveAllParags();
-  ClearSelection();
-  m_nCaret = 0;
-  m_pTxtBuf->Clear(FALSE);
-  m_nCaret = 0;
-}
-void CFDE_TxtEdtEngine::RebuildParagraphs() {
-  RemoveAllParags();
-  FX_WCHAR wChar = L' ';
-  int32_t nParagStart = 0;
-  int32_t nIndex = 0;
-  IFX_CharIter* pIter = new CFDE_TxtEdtBufIter((CFDE_TxtEdtBuf*)m_pTxtBuf);
-  pIter->SetAt(0);
-  do {
-    wChar = pIter->GetChar();
-    nIndex = pIter->GetAt();
-    if (wChar == m_wLineEnd) {
-      CFDE_TxtEdtParag* pParag = new CFDE_TxtEdtParag(this);
-      pParag->m_nCharStart = nParagStart;
-      pParag->m_nCharCount = nIndex - nParagStart + 1;
-      pParag->m_nLineCount = -1;
-      m_ParagPtrArray.Add(pParag);
-      nParagStart = nIndex + 1;
-    }
-  } while (pIter->Next());
-  pIter->Release();
-}
-void CFDE_TxtEdtEngine::RemoveAllParags() {
-  int32_t nCount = m_ParagPtrArray.GetSize();
-  int32_t i = 0;
-  for (i = 0; i < nCount; i++) {
-    CFDE_TxtEdtParag* pParag = m_ParagPtrArray[i];
-    if (pParag) {
-      delete pParag;
-    }
-  }
-  m_ParagPtrArray.RemoveAll();
-}
-void CFDE_TxtEdtEngine::RemoveAllPages() {
-  int32_t nCount = m_PagePtrArray.GetSize();
-  int32_t i = 0;
-  for (i = 0; i < nCount; i++) {
-    IFDE_TxtEdtPage* pPage = m_PagePtrArray[i];
-    if (pPage) {
-      pPage->Release();
-    }
-  }
-  m_PagePtrArray.RemoveAll();
-}
-void CFDE_TxtEdtEngine::UpdateParags() {
-  int32_t nCount = m_ParagPtrArray.GetSize();
-  if (nCount == 0) {
-    return;
-  }
-  CFDE_TxtEdtParag* pParag = NULL;
-  int32_t nLineCount = 0;
-  int32_t i = 0;
-  for (i = 0; i < nCount; i++) {
-    pParag = m_ParagPtrArray[i];
-    if (pParag->m_nLineCount == -1) {
-      pParag->CalcLines();
-    }
-    nLineCount += pParag->m_nLineCount;
-  }
-  m_nLineCount = nLineCount;
-}
-void CFDE_TxtEdtEngine::UpdatePages() {
-  if (m_nLineCount == 0) {
-    return;
-  }
-  int32_t nPageCount = (m_nLineCount - 1) / (m_nPageLineCount) + 1;
-  int32_t nSize = m_PagePtrArray.GetSize();
-  if (nSize == nPageCount) {
-    return;
-  }
-  if (nSize > nPageCount) {
-    IFDE_TxtEdtPage* pPage = NULL;
-    int32_t i = 0;
-    for (i = nSize - 1; i >= nPageCount; i--) {
-      pPage = m_PagePtrArray[i];
-      if (pPage) {
-        pPage->Release();
-      }
-      m_PagePtrArray.RemoveAt(i);
-    }
-    m_Param.pEventSink->On_PageCountChanged(this);
-    return;
-  }
-  if (nSize < nPageCount) {
-    IFDE_TxtEdtPage* pPage = NULL;
-    int32_t i = 0;
-    for (i = nSize; i < nPageCount; i++) {
-      pPage = IFDE_TxtEdtPage::Create(this, i);
-      m_PagePtrArray.Add(pPage);
-    }
-    m_Param.pEventSink->On_PageCountChanged(this);
-    return;
-  }
-}
-void CFDE_TxtEdtEngine::UpdateTxtBreak() {
-  FX_DWORD dwStyle = m_pTextBreak->GetLayoutStyles();
-  if (m_Param.dwMode & FDE_TEXTEDITMODE_MultiLines) {
-    dwStyle &= ~FX_TXTLAYOUTSTYLE_SingleLine;
-  } else {
-    dwStyle |= FX_TXTLAYOUTSTYLE_SingleLine;
-  }
-  if (m_Param.dwLayoutStyles & FDE_TEXTEDITLAYOUT_DocVertical) {
-    dwStyle |= FX_TXTLAYOUTSTYLE_VerticalLayout;
-  } else {
-    dwStyle &= ~FX_TXTLAYOUTSTYLE_VerticalLayout;
-  }
-  if (m_Param.dwLayoutStyles & FDE_TEXTEDITLAYOUT_LineReserve) {
-    dwStyle |= FX_TXTLAYOUTSTYLE_ReverseLine;
-  } else {
-    dwStyle &= ~FX_TXTLAYOUTSTYLE_ReverseLine;
-  }
-  if (m_Param.dwLayoutStyles & FDE_TEXTEDITLAYOUT_RTL) {
-    dwStyle |= FX_TXTLAYOUTSTYLE_RTLReadingOrder;
-  } else {
-    dwStyle &= ~FX_TXTLAYOUTSTYLE_RTLReadingOrder;
-  }
-  if (m_Param.dwLayoutStyles & FDE_TEXTEDITLAYOUT_CombText) {
-    dwStyle |= FX_TXTLAYOUTSTYLE_CombText;
-  } else {
-    dwStyle &= ~FX_TXTLAYOUTSTYLE_CombText;
-  }
-  if (m_Param.dwLayoutStyles & FDE_TEXTEDITLAYOUT_CharVertial) {
-    dwStyle |= FX_TXTLAYOUTSTYLE_VerticalChars;
-  } else {
-    dwStyle &= ~FX_TXTLAYOUTSTYLE_VerticalChars;
-  }
-  if (m_Param.dwLayoutStyles & FDE_TEXTEDITLAYOUT_ExpandTab) {
-    dwStyle |= FX_TXTLAYOUTSTYLE_ExpandTab;
-  } else {
-    dwStyle &= ~FX_TXTLAYOUTSTYLE_ExpandTab;
-  }
-  if (m_Param.dwLayoutStyles & FDE_TEXTEDITLAYOUT_ArabicContext) {
-    dwStyle |= FX_TXTLAYOUTSTYLE_ArabicContext;
-  } else {
-    dwStyle &= ~FX_TXTLAYOUTSTYLE_ArabicContext;
-  }
-  if (m_Param.dwLayoutStyles & FDE_TEXTEDITLAYOUT_ArabicShapes) {
-    dwStyle |= FX_TXTLAYOUTSTYLE_ArabicShapes;
-  } else {
-    dwStyle &= ~FX_TXTLAYOUTSTYLE_ArabicShapes;
-  }
-  m_pTextBreak->SetLayoutStyles(dwStyle);
-  FX_DWORD dwAligment = 0;
-  if (m_Param.dwAlignment & FDE_TEXTEDITALIGN_Justified) {
-    dwAligment |= FX_TXTLINEALIGNMENT_Justified;
-  } else if (m_Param.dwAlignment & FDE_TEXTEDITALIGN_Distributed) {
-    dwAligment |= FX_TXTLINEALIGNMENT_Distributed;
-  }
-  if (m_Param.dwAlignment & FDE_TEXTEDITALIGN_Center) {
-    dwAligment |= FX_TXTLINEALIGNMENT_Center;
-  } else if (m_Param.dwAlignment & FDE_TEXTEDITALIGN_Right) {
-    dwAligment |= FX_TXTLINEALIGNMENT_Right;
-  }
-  m_pTextBreak->SetAlignment(dwAligment);
-  if (m_Param.dwLayoutStyles & FDE_TEXTEDITLAYOUT_DocVertical) {
-    if (m_Param.dwMode & FDE_TEXTEDITMODE_AutoLineWrap) {
-      m_pTextBreak->SetLineWidth(m_Param.fPlateHeight);
-    } else {
-      m_pTextBreak->SetLineWidth(FDE_PAGEWIDTH_MAX);
-    }
-  } else {
-    if (m_Param.dwMode & FDE_TEXTEDITMODE_AutoLineWrap) {
-      m_pTextBreak->SetLineWidth(m_Param.fPlateWidth);
-    } else {
-      m_pTextBreak->SetLineWidth(FDE_PAGEWIDTH_MAX);
-    }
-  }
-  m_nPageLineCount = m_Param.nLineCount;
-  if (m_Param.dwLayoutStyles & FDE_TEXTEDITLAYOUT_CombText) {
-    FX_FLOAT fCombWidth =
-        m_Param.dwLayoutStyles & FDE_TEXTEDITLAYOUT_DocVertical
-            ? m_Param.fPlateHeight
-            : m_Param.fPlateWidth;
-    if (m_nLimit > 0) {
-      fCombWidth /= m_nLimit;
-    }
-    m_pTextBreak->SetCombWidth(fCombWidth);
-  }
-  m_pTextBreak->SetFont(m_Param.pFont);
-  m_pTextBreak->SetFontSize(m_Param.fFontSize);
-  m_pTextBreak->SetTabWidth(m_Param.fTabWidth, m_Param.bTabEquidistant);
-  m_pTextBreak->SetDefaultChar(m_Param.wDefChar);
-  m_pTextBreak->SetParagraphBreakChar(m_Param.wLineBreakChar);
-  m_pTextBreak->SetCharRotation(m_Param.nCharRotation);
-  m_pTextBreak->SetLineBreakTolerance(m_Param.fFontSize * 0.2f);
-  m_pTextBreak->SetHorizontalScale(m_Param.nHorzScale);
-  m_pTextBreak->SetCharSpace(m_Param.fCharSpace);
-}
-FX_BOOL CFDE_TxtEdtEngine::ReplaceParagEnd(FX_WCHAR*& lpText,
-                                           int32_t& nLength,
-                                           FX_BOOL bPreIsCR) {
-  for (int32_t i = 0; i < nLength; i++) {
-    FX_WCHAR wc = lpText[i];
-    switch (wc) {
-      case L'\r': {
-        lpText[i] = m_wLineEnd;
-        bPreIsCR = TRUE;
-      } break;
-      case L'\n': {
-        if (bPreIsCR == TRUE) {
-          int32_t nNext = i + 1;
-          if (nNext < nLength) {
-            FXSYS_memmove(lpText + i, lpText + nNext,
-                          (nLength - nNext) * sizeof(FX_WCHAR));
-          }
-          i--;
-          nLength--;
-          bPreIsCR = FALSE;
-          if (m_bAutoLineEnd) {
-            m_nFirstLineEnd = FDE_TXTEDIT_LINEEND_CRLF;
-            m_bAutoLineEnd = FALSE;
-          }
-        } else {
-          lpText[i] = m_wLineEnd;
-          if (m_bAutoLineEnd) {
-            m_nFirstLineEnd = FDE_TXTEDIT_LINEEND_LF;
-            m_bAutoLineEnd = FALSE;
-          }
-        }
-      } break;
-      default: {
-        if (bPreIsCR && m_bAutoLineEnd) {
-          m_nFirstLineEnd = FDE_TXTEDIT_LINEEND_CR;
-          m_bAutoLineEnd = FALSE;
-        }
-        bPreIsCR = FALSE;
-      } break;
-    }
-  }
-  return bPreIsCR;
-}
-void CFDE_TxtEdtEngine::RecoverParagEnd(CFX_WideString& wsText) {
-  FX_WCHAR wc = (m_nFirstLineEnd == FDE_TXTEDIT_LINEEND_CR) ? L'\n' : L'\r';
-  if (m_nFirstLineEnd == FDE_TXTEDIT_LINEEND_CRLF) {
-    CFX_ArrayTemplate<int32_t> PosArr;
-    int32_t nLength = wsText.GetLength();
-    int32_t i = 0;
-    FX_WCHAR* lpPos = (FX_WCHAR*)(const FX_WCHAR*)wsText;
-    for (i = 0; i < nLength; i++, lpPos++) {
-      if (*lpPos == m_wLineEnd) {
-        *lpPos = wc;
-        PosArr.Add(i);
-      }
-    }
-    const FX_WCHAR* lpSrcBuf = wsText.c_str();
-    CFX_WideString wsTemp;
-    int32_t nCount = PosArr.GetSize();
-    FX_WCHAR* lpDstBuf = wsTemp.GetBuffer(nLength + nCount);
-    int32_t nDstPos = 0;
-    int32_t nSrcPos = 0;
-    for (i = 0; i < nCount; i++) {
-      int32_t nPos = PosArr[i];
-      int32_t nCopyLen = nPos - nSrcPos + 1;
-      FXSYS_memcpy(lpDstBuf + nDstPos, lpSrcBuf + nSrcPos,
-                   nCopyLen * sizeof(FX_WCHAR));
-      nDstPos += nCopyLen;
-      nSrcPos += nCopyLen;
-      lpDstBuf[nDstPos] = L'\n';
-      nDstPos++;
-    }
-    if (nSrcPos < nLength) {
-      FXSYS_memcpy(lpDstBuf + nDstPos, lpSrcBuf + nSrcPos,
-                   (nLength - nSrcPos) * sizeof(FX_WCHAR));
-    }
-    wsTemp.ReleaseBuffer(nLength + nCount);
-    wsText = wsTemp;
-  } else {
-    int32_t nLength = wsText.GetLength();
-    FX_WCHAR* lpBuf = (FX_WCHAR*)(const FX_WCHAR*)wsText;
-    for (int32_t i = 0; i < nLength; i++, lpBuf++) {
-      if (*lpBuf == m_wLineEnd) {
-        *lpBuf = wc;
-      }
-    }
-  }
-}
-int32_t CFDE_TxtEdtEngine::MovePage2Char(int32_t nIndex) {
-  FXSYS_assert(nIndex >= 0);
-  FXSYS_assert(nIndex <= m_pTxtBuf->GetTextLength());
-  if (m_nCaretPage >= 0) {
-    IFDE_TxtEdtPage* pPage = m_PagePtrArray[m_nCaretPage];
-    m_Param.pEventSink->On_PageLoad(this, m_nCaretPage, 0);
-    int32_t nPageCharStart = pPage->GetCharStart();
-    int32_t nPageCharCount = pPage->GetCharCount();
-    if (nIndex >= nPageCharStart && nIndex < nPageCharStart + nPageCharCount) {
-      m_Param.pEventSink->On_PageUnload(this, m_nCaretPage, 0);
-      return m_nCaretPage;
-    }
-    m_Param.pEventSink->On_PageUnload(this, m_nCaretPage, 0);
-  }
-  CFDE_TxtEdtParag* pParag = NULL;
-  int32_t nLineCount = 0;
-  int32_t nParagCount = m_ParagPtrArray.GetSize();
-  int32_t i = 0;
-  for (i = 0; i < nParagCount; i++) {
-    pParag = m_ParagPtrArray[i];
-    if (pParag->m_nCharStart <= nIndex &&
-        nIndex < (pParag->m_nCharStart + pParag->m_nCharCount)) {
-      break;
-    }
-    nLineCount += pParag->m_nLineCount;
-  }
-  pParag->LoadParag();
-  int32_t nLineStart = -1;
-  int32_t nLineCharCount = -1;
-  for (i = 0; i < pParag->m_nLineCount; i++) {
-    pParag->GetLineRange(i, nLineStart, nLineCharCount);
-    if (nLineStart <= nIndex && nIndex < (nLineStart + nLineCharCount)) {
-      break;
-    }
-  }
-  FXSYS_assert(i < pParag->m_nLineCount);
-  nLineCount += (i + 1);
-  m_nCaretPage = (nLineCount - 1) / m_nPageLineCount + 1 - 1;
-  m_Param.pEventSink->On_PageChange(this, m_nCaretPage);
-  pParag->UnloadParag();
-  return m_nCaretPage;
-}
-void CFDE_TxtEdtEngine::TextPos2ParagPos(int32_t nIndex,
-                                         FDE_TXTEDTPARAGPOS& ParagPos) const {
-  FXSYS_assert(nIndex >= 0 && nIndex < m_pTxtBuf->GetTextLength());
-  int32_t nCount = m_ParagPtrArray.GetSize();
-  int32_t nBgn = 0;
-  int32_t nMid = 0;
-  int32_t nEnd = nCount - 1;
-  while (nEnd > nBgn) {
-    nMid = (nBgn + nEnd) / 2;
-    CFDE_TxtEdtParag* pParag = m_ParagPtrArray[nMid];
-    if (nIndex < pParag->m_nCharStart) {
-      nEnd = nMid - 1;
-    } else if (nIndex >= (pParag->m_nCharStart + pParag->m_nCharCount)) {
-      nBgn = nMid + 1;
-    } else {
-      break;
-    }
-  }
-  if (nBgn == nEnd) {
-    nMid = nBgn;
-  }
-  FXSYS_assert(nIndex >= m_ParagPtrArray[nMid]->m_nCharStart &&
-               (nIndex < m_ParagPtrArray[nMid]->m_nCharStart +
-                             m_ParagPtrArray[nMid]->m_nCharCount));
-  ParagPos.nParagIndex = nMid;
-  ParagPos.nCharIndex = nIndex - m_ParagPtrArray[nMid]->m_nCharStart;
-}
-int32_t CFDE_TxtEdtEngine::MoveForward(FX_BOOL& bBefore) {
-  if (m_nCaret == m_pTxtBuf->GetTextLength() - 1) {
-    return -1;
-  }
-  int32_t nCaret = m_nCaret;
-  if ((nCaret + 1 < m_pTxtBuf->GetTextLength()) &&
-      (m_pTxtBuf->GetCharByIndex(nCaret) == L'\r') &&
-      (m_pTxtBuf->GetCharByIndex(nCaret + 1) == L'\n')) {
-    nCaret++;
-  }
-  nCaret++;
-  bBefore = TRUE;
-  return nCaret;
-}
-int32_t CFDE_TxtEdtEngine::MoveBackward(FX_BOOL& bBefore) {
-  if (m_nCaret == 0) {
-    return FALSE;
-  }
-  int32_t nCaret = m_nCaret;
-  if (nCaret > 2 && m_pTxtBuf->GetCharByIndex(nCaret - 1) == L'\n' &&
-      m_pTxtBuf->GetCharByIndex(nCaret - 2) == L'\r') {
-    nCaret--;
-  }
-  nCaret--;
-  bBefore = TRUE;
-  return nCaret;
-}
-FX_BOOL CFDE_TxtEdtEngine::MoveUp(CFX_PointF& ptCaret) {
-  IFDE_TxtEdtPage* pPage = GetPage(m_nCaretPage);
-  const CFX_RectF& rtContent = pPage->GetContentsBox();
-  if (m_Param.dwLayoutStyles & FDE_TEXTEDITLAYOUT_DocVertical) {
-    ptCaret.x = m_rtCaret.left + m_rtCaret.width / 2 - m_Param.fLineSpace;
-    ptCaret.y = m_fCaretPosReserve;
-    FX_BOOL bLineReserve =
-        m_Param.dwLayoutStyles & FDE_TEXTEDITLAYOUT_LineReserve;
-    if (ptCaret.x < rtContent.left) {
-      if (bLineReserve) {
-        if (m_nCaretPage == CountPages() - 1) {
-          return FALSE;
-        }
-      } else {
-        if (m_nCaretPage == 0) {
-          return FALSE;
-        }
-      }
-      if (bLineReserve) {
-        m_nCaretPage++;
-      } else {
-        m_nCaretPage--;
-      }
-      m_Param.pEventSink->On_PageChange(this, m_nCaretPage);
-      ptCaret.x -= rtContent.left;
-      IFDE_TxtEdtPage* pCurPage = GetPage(m_nCaretPage);
-      ptCaret.x += pCurPage->GetContentsBox().right();
-    }
-  } else {
-    ptCaret.x = m_fCaretPosReserve;
-    ptCaret.y = m_rtCaret.top + m_rtCaret.height / 2 - m_Param.fLineSpace;
-    if (ptCaret.y < rtContent.top) {
-      if (m_nCaretPage == 0) {
-        return FALSE;
-      }
-      ptCaret.y -= rtContent.top;
-      m_nCaretPage--;
-      m_Param.pEventSink->On_PageChange(this, m_nCaretPage);
-      IFDE_TxtEdtPage* pCurPage = GetPage(m_nCaretPage);
-      ptCaret.y += pCurPage->GetContentsBox().bottom();
-    }
-  }
-  return TRUE;
-}
-FX_BOOL CFDE_TxtEdtEngine::MoveDown(CFX_PointF& ptCaret) {
-  IFDE_TxtEdtPage* pPage = GetPage(m_nCaretPage);
-  const CFX_RectF& rtContent = pPage->GetContentsBox();
-  if (m_Param.dwLayoutStyles & FDE_TEXTEDITLAYOUT_DocVertical) {
-    ptCaret.x = m_rtCaret.left + m_rtCaret.width / 2 + m_Param.fLineSpace;
-    ptCaret.y = m_fCaretPosReserve;
-    if (ptCaret.x >= rtContent.right()) {
-      FX_BOOL bLineReserve =
-          m_Param.dwLayoutStyles & FDE_TEXTEDITLAYOUT_LineReserve;
-      if (bLineReserve) {
-        if (m_nCaretPage == 0) {
-          return FALSE;
-        }
-      } else {
-        if (m_nCaretPage == CountPages() - 1) {
-          return FALSE;
-        }
-      }
-      if (bLineReserve) {
-        m_nCaretPage--;
-      } else {
-        m_nCaretPage++;
-      }
-      m_Param.pEventSink->On_PageChange(this, m_nCaretPage);
-      ptCaret.x -= rtContent.right();
-      IFDE_TxtEdtPage* pCurPage = GetPage(m_nCaretPage);
-      ptCaret.x += pCurPage->GetContentsBox().left;
-    }
-  } else {
-    ptCaret.x = m_fCaretPosReserve;
-    ptCaret.y = m_rtCaret.top + m_rtCaret.height / 2 + m_Param.fLineSpace;
-    if (ptCaret.y >= rtContent.bottom()) {
-      if (m_nCaretPage == CountPages() - 1) {
-        return FALSE;
-      }
-      ptCaret.y -= rtContent.bottom();
-      m_nCaretPage++;
-      m_Param.pEventSink->On_PageChange(this, m_nCaretPage);
-      IFDE_TxtEdtPage* pCurPage = GetPage(m_nCaretPage);
-      ptCaret.y += pCurPage->GetContentsBox().top;
-    }
-  }
-  return TRUE;
-}
-FX_BOOL CFDE_TxtEdtEngine::MoveLineStart() {
-  int32_t nIndex = m_bBefore ? m_nCaret : m_nCaret - 1;
-  FDE_TXTEDTPARAGPOS ParagPos;
-  TextPos2ParagPos(nIndex, ParagPos);
-  CFDE_TxtEdtParag* pParag = m_ParagPtrArray[ParagPos.nParagIndex];
-  pParag->LoadParag();
-  int32_t nLineCount = pParag->m_nLineCount;
-  int32_t i = 0;
-  int32_t nStart = 0;
-  int32_t nCount = 0;
-  for (; i < nLineCount; i++) {
-    pParag->GetLineRange(i, nStart, nCount);
-    if (nIndex >= nStart && nIndex < nStart + nCount) {
-      break;
-    }
-  }
-  UpdateCaretRect(nStart, TRUE);
-  pParag->UnloadParag();
-  return TRUE;
-}
-FX_BOOL CFDE_TxtEdtEngine::MoveLineEnd() {
-  int32_t nIndex = m_bBefore ? m_nCaret : m_nCaret - 1;
-  FDE_TXTEDTPARAGPOS ParagPos;
-  TextPos2ParagPos(nIndex, ParagPos);
-  CFDE_TxtEdtParag* pParag = m_ParagPtrArray[ParagPos.nParagIndex];
-  pParag->LoadParag();
-  int32_t nLineCount = pParag->m_nLineCount;
-  int32_t i = 0;
-  int32_t nStart = 0;
-  int32_t nCount = 0;
-  for (; i < nLineCount; i++) {
-    pParag->GetLineRange(i, nStart, nCount);
-    if (nIndex >= nStart && nIndex < nStart + nCount) {
-      break;
-    }
-  }
-  nIndex = nStart + nCount - 1;
-  FXSYS_assert(nIndex <= GetTextBufLength());
-  FX_WCHAR wChar = m_pTxtBuf->GetCharByIndex(nIndex);
-  FX_BOOL bBefore = FALSE;
-  if (nIndex <= GetTextBufLength()) {
-    if (wChar == L'\r') {
-      bBefore = TRUE;
-    } else if (wChar == L'\n' && nIndex > nStart) {
-      bBefore = TRUE;
-      nIndex--;
-      wChar = m_pTxtBuf->GetCharByIndex(nIndex);
-      if (wChar != L'\r') {
-        nIndex++;
-      }
-    }
-  }
-  UpdateCaretRect(nIndex, bBefore);
-  pParag->UnloadParag();
-  return TRUE;
-}
-FX_BOOL CFDE_TxtEdtEngine::MoveParagStart() {
-  int32_t nIndex = m_bBefore ? m_nCaret : m_nCaret - 1;
-  FDE_TXTEDTPARAGPOS ParagPos;
-  TextPos2ParagPos(nIndex, ParagPos);
-  CFDE_TxtEdtParag* pParag = m_ParagPtrArray[ParagPos.nParagIndex];
-  UpdateCaretRect(pParag->m_nCharStart, TRUE);
-  return TRUE;
-}
-FX_BOOL CFDE_TxtEdtEngine::MoveParagEnd() {
-  int32_t nIndex = m_bBefore ? m_nCaret : m_nCaret - 1;
-  FDE_TXTEDTPARAGPOS ParagPos;
-  TextPos2ParagPos(nIndex, ParagPos);
-  CFDE_TxtEdtParag* pParag = m_ParagPtrArray[ParagPos.nParagIndex];
-  nIndex = pParag->m_nCharStart + pParag->m_nCharCount - 1;
-  FX_WCHAR wChar = m_pTxtBuf->GetCharByIndex(nIndex);
-  if (wChar == L'\n' && nIndex > 0) {
-    nIndex--;
-    wChar = m_pTxtBuf->GetCharByIndex(nIndex);
-    if (wChar != L'\r') {
-      nIndex++;
-    }
-  }
-  UpdateCaretRect(nIndex, TRUE);
-  return TRUE;
-}
-FX_BOOL CFDE_TxtEdtEngine::MoveHome() {
-  UpdateCaretRect(0, TRUE);
-  return TRUE;
-}
-FX_BOOL CFDE_TxtEdtEngine::MoveEnd() {
-  UpdateCaretRect(GetTextBufLength(), TRUE);
-  return TRUE;
-}
-
-FX_BOOL CFDE_TxtEdtEngine::IsFitArea(CFX_WideString& wsText) {
-  IFDE_TextOut* pTextOut = IFDE_TextOut::Create();
-  pTextOut->SetLineSpace(m_Param.fLineSpace);
-  pTextOut->SetFont(m_Param.pFont);
-  pTextOut->SetFontSize(m_Param.fFontSize);
-  CFX_RectF rcText;
-  FXSYS_memset(&rcText, 0, sizeof(rcText));
-  FX_DWORD dwStyle = 0;
-  if (!(m_Param.dwMode & FDE_TEXTEDITMODE_MultiLines)) {
-    dwStyle |= FDE_TTOSTYLE_SingleLine;
-  }
-  if (m_Param.dwMode & FDE_TEXTEDITMODE_AutoLineWrap) {
-    dwStyle |= FDE_TTOSTYLE_LineWrap;
-    rcText.width = m_Param.fPlateWidth;
-  } else {
-    rcText.width = 65535;
-  }
-  pTextOut->SetStyles(dwStyle);
-  wsText += L"\n";
-  pTextOut->CalcLogicSize(wsText, wsText.GetLength(), rcText);
-  pTextOut->Release();
-  wsText.Delete(wsText.GetLength() - 1);
-  if ((m_Param.dwMode & FDE_TEXTEDITMODE_LimitArea_Horz) &&
-      (rcText.width > m_Param.fPlateWidth)) {
-    return FALSE;
-  }
-  if ((m_Param.dwMode & FDE_TEXTEDITMODE_LimitArea_Vert) &&
-      (rcText.height > m_Param.fLineSpace * m_Param.nLineCount)) {
-    return FALSE;
-  }
-  return TRUE;
-}
-void CFDE_TxtEdtEngine::UpdateCaretRect(int32_t nIndex, FX_BOOL bBefore) {
-  MovePage2Char(nIndex);
-  GetCaretRect(m_rtCaret, m_nCaretPage, nIndex, bBefore);
-  m_nCaret = nIndex;
-  m_bBefore = bBefore;
-  if (!m_bBefore) {
-    m_nCaret++;
-    m_bBefore = TRUE;
-  }
-  m_fCaretPosReserve = (m_Param.dwLayoutStyles & FDE_TEXTEDITLAYOUT_DocVertical)
-                           ? m_rtCaret.top
-                           : m_rtCaret.left;
-  m_Param.pEventSink->On_CaretChanged(this, m_nCaretPage, 0);
-}
-void CFDE_TxtEdtEngine::GetCaretRect(CFX_RectF& rtCaret,
-                                     int32_t nPageIndex,
-                                     int32_t nCaret,
-                                     FX_BOOL bBefore) {
-  IFDE_TxtEdtPage* pPage = m_PagePtrArray[m_nCaretPage];
-  m_Param.pEventSink->On_PageLoad(this, m_nCaretPage, 0);
-  FX_BOOL bCombText = m_Param.dwLayoutStyles & FDE_TEXTEDITLAYOUT_CombText;
-  int32_t nIndexInpage = nCaret - pPage->GetCharStart();
-  if (bBefore && bCombText && nIndexInpage > 0) {
-    nIndexInpage--;
-    bBefore = FALSE;
-  }
-  int32_t nBIDILevel = pPage->GetCharRect(nIndexInpage, rtCaret, bCombText);
-  if (m_Param.dwLayoutStyles & FDE_TEXTEDITLAYOUT_DocVertical) {
-    if ((!FX_IsOdd(nBIDILevel) && !bBefore) ||
-        (FX_IsOdd(nBIDILevel) && bBefore)) {
-      rtCaret.Offset(0, rtCaret.height - 1.0f);
-    }
-    if (rtCaret.height == 0 && rtCaret.top > 1.0f) {
-      rtCaret.top -= 1.0f;
-    }
-    rtCaret.height = 1.0f;
-  } else {
-    if ((!FX_IsOdd(nBIDILevel) && !bBefore) ||
-        (FX_IsOdd(nBIDILevel) && bBefore)) {
-      rtCaret.Offset(rtCaret.width - 1.0f, 0);
-    }
-    if (rtCaret.width == 0 && rtCaret.left > 1.0f) {
-      rtCaret.left -= 1.0f;
-    }
-    rtCaret.width = 1.0f;
-  }
-  m_Param.pEventSink->On_PageUnload(this, m_nCaretPage, 0);
-}
-void CFDE_TxtEdtEngine::UpdateCaretIndex(const CFX_PointF& ptCaret) {
-  IFDE_TxtEdtPage* pPage = m_PagePtrArray[m_nCaretPage];
-  m_Param.pEventSink->On_PageLoad(this, m_nCaretPage, 0);
-  m_nCaret = pPage->GetCharIndex(ptCaret, m_bBefore);
-  GetCaretRect(m_rtCaret, m_nCaretPage, m_nCaret, m_bBefore);
-  if (!m_bBefore) {
-    m_nCaret++;
-    m_bBefore = TRUE;
-  }
-  m_Param.pEventSink->On_CaretChanged(this, m_nCaretPage);
-  m_Param.pEventSink->On_PageUnload(this, m_nCaretPage, 0);
-}
-FX_BOOL CFDE_TxtEdtEngine::IsSelect() {
-  return m_SelRangePtrArr.GetSize() > 0;
-}
-void CFDE_TxtEdtEngine::DeleteSelect() {
-  int32_t nCountRange = CountSelRanges();
-  if (nCountRange > 0) {
-    int32_t nSelStart;
-    int32_t nSelCount;
-    while (nCountRange > 0) {
-      nSelCount = GetSelRange(--nCountRange, nSelStart);
-      FDE_LPTXTEDTSELRANGE lpTemp = m_SelRangePtrArr[nCountRange];
-      delete lpTemp;
-      m_SelRangePtrArr.RemoveAt(nCountRange);
-      DeleteRange_DoRecord(nSelStart, nSelCount, TRUE);
-    }
-    ClearSelection();
-    m_Param.pEventSink->On_TextChanged(this, m_ChangeInfo);
-    m_Param.pEventSink->On_SelChanged(this);
-    SetCaretPos(nSelStart, TRUE);
-    return;
-  }
-}
-IFDE_TxtEdtDoRecord* IFDE_TxtEdtDoRecord::Create(
-    const CFX_ByteStringC& bsDoRecord) {
-  const FX_CHAR* lpBuf = bsDoRecord.GetCStr();
-  int32_t nType = *((int32_t*)lpBuf);
-  switch (nType) {
-    case FDE_TXTEDT_DORECORD_INS:
-      return new CFDE_TxtEdtDoRecord_Insert(bsDoRecord);
-    case FDE_TXTEDT_DORECORD_DEL:
-      return new CFDE_TxtEdtDoRecord_DeleteRange(bsDoRecord);
-    default:
-      break;
-  }
-  return NULL;
-}
-CFDE_TxtEdtDoRecord_Insert::CFDE_TxtEdtDoRecord_Insert(
-    const CFX_ByteStringC& bsDoRecord) {
-  Deserialize(bsDoRecord);
-}
-CFDE_TxtEdtDoRecord_Insert::CFDE_TxtEdtDoRecord_Insert(
-    CFDE_TxtEdtEngine* pEngine,
-    int32_t nCaret,
-    const FX_WCHAR* lpText,
-    int32_t nLength)
-    : m_pEngine(pEngine), m_nCaret(nCaret) {
-  FXSYS_assert(pEngine);
-  FX_WCHAR* lpBuffer = m_wsInsert.GetBuffer(nLength);
-  FXSYS_memcpy(lpBuffer, lpText, nLength * sizeof(FX_WCHAR));
-  m_wsInsert.ReleaseBuffer();
-}
-CFDE_TxtEdtDoRecord_Insert::~CFDE_TxtEdtDoRecord_Insert() {}
-void CFDE_TxtEdtDoRecord_Insert::Release() {
-  delete this;
-}
-FX_BOOL CFDE_TxtEdtDoRecord_Insert::Undo() {
-  if (m_pEngine->IsSelect()) {
-    m_pEngine->ClearSelection();
-  }
-  m_pEngine->Inner_DeleteRange(m_nCaret, m_wsInsert.GetLength());
-  FDE_TXTEDTPARAMS& Param = m_pEngine->m_Param;
-  m_pEngine->m_ChangeInfo.nChangeType = FDE_TXTEDT_TEXTCHANGE_TYPE_Delete;
-  m_pEngine->m_ChangeInfo.wsDelete = m_wsInsert;
-  Param.pEventSink->On_TextChanged(m_pEngine, m_pEngine->m_ChangeInfo);
-  m_pEngine->SetCaretPos(m_nCaret, TRUE);
-  return TRUE;
-}
-FX_BOOL CFDE_TxtEdtDoRecord_Insert::Redo() {
-  m_pEngine->Inner_Insert(m_nCaret, m_wsInsert.c_str(), m_wsInsert.GetLength());
-  FDE_TXTEDTPARAMS& Param = m_pEngine->m_Param;
-  m_pEngine->m_ChangeInfo.nChangeType = FDE_TXTEDT_TEXTCHANGE_TYPE_Insert;
-  m_pEngine->m_ChangeInfo.wsDelete = m_wsInsert;
-  Param.pEventSink->On_TextChanged(m_pEngine, m_pEngine->m_ChangeInfo);
-  m_pEngine->SetCaretPos(m_nCaret, FALSE);
-  return TRUE;
-}
-void CFDE_TxtEdtDoRecord_Insert::Serialize(CFX_ByteString& bsDoRecord) const {
-  CFX_ArchiveSaver ArchiveSaver;
-  ArchiveSaver << int32_t(FDE_TXTEDT_DORECORD_INS);
-  ArchiveSaver << (int32_t)(uintptr_t)m_pEngine;
-  ArchiveSaver << m_nCaret;
-  ArchiveSaver << m_wsInsert;
-  int32_t nLength = ArchiveSaver.GetLength();
-  const uint8_t* lpSrcBuf = ArchiveSaver.GetBuffer();
-  FX_CHAR* lpDstBuf = bsDoRecord.GetBuffer(nLength);
-  FXSYS_memcpy(lpDstBuf, lpSrcBuf, nLength);
-  bsDoRecord.ReleaseBuffer(nLength);
-}
-void CFDE_TxtEdtDoRecord_Insert::Deserialize(
-    const CFX_ByteStringC& bsDoRecord) {
-  CFX_ArchiveLoader ArchiveLoader((const uint8_t*)bsDoRecord.GetCStr(),
-                                  bsDoRecord.GetLength());
-  int32_t nType = 0;
-  ArchiveLoader >> nType;
-  FXSYS_assert(nType == FDE_TXTEDT_DORECORD_INS);
-  int32_t nEngine = 0;
-  ArchiveLoader >> nEngine;
-  m_pEngine = (CFDE_TxtEdtEngine*)(uintptr_t)nEngine;
-  ArchiveLoader >> m_nCaret;
-  ArchiveLoader >> m_wsInsert;
-}
-CFDE_TxtEdtDoRecord_DeleteRange::CFDE_TxtEdtDoRecord_DeleteRange(
-    const CFX_ByteStringC& bsDoRecord) {
-  Deserialize(bsDoRecord);
-}
-CFDE_TxtEdtDoRecord_DeleteRange::CFDE_TxtEdtDoRecord_DeleteRange(
-    CFDE_TxtEdtEngine* pEngine,
-    int32_t nIndex,
-    int32_t nCaret,
-    const CFX_WideString& wsRange,
-    FX_BOOL bSel)
-    : m_pEngine(pEngine),
-      m_bSel(bSel),
-      m_nIndex(nIndex),
-      m_nCaret(nCaret),
-      m_wsRange(wsRange) {
-  FXSYS_assert(pEngine);
-}
-CFDE_TxtEdtDoRecord_DeleteRange::~CFDE_TxtEdtDoRecord_DeleteRange() {}
-void CFDE_TxtEdtDoRecord_DeleteRange::Release() {
-  delete this;
-}
-FX_BOOL CFDE_TxtEdtDoRecord_DeleteRange::Undo() {
-  if (m_pEngine->IsSelect()) {
-    m_pEngine->ClearSelection();
-  }
-  m_pEngine->Inner_Insert(m_nIndex, m_wsRange.c_str(), m_wsRange.GetLength());
-  if (m_bSel) {
-    m_pEngine->AddSelRange(m_nIndex, m_wsRange.GetLength());
-  }
-  FDE_TXTEDTPARAMS& Param = m_pEngine->m_Param;
-  m_pEngine->m_ChangeInfo.nChangeType = FDE_TXTEDT_TEXTCHANGE_TYPE_Insert;
-  m_pEngine->m_ChangeInfo.wsDelete = m_wsRange;
-  Param.pEventSink->On_TextChanged(m_pEngine, m_pEngine->m_ChangeInfo);
-  m_pEngine->SetCaretPos(m_nCaret, TRUE);
-  return TRUE;
-}
-FX_BOOL CFDE_TxtEdtDoRecord_DeleteRange::Redo() {
-  m_pEngine->Inner_DeleteRange(m_nIndex, m_wsRange.GetLength());
-  if (m_bSel) {
-    m_pEngine->RemoveSelRange(m_nIndex, m_wsRange.GetLength());
-  }
-  FDE_TXTEDTPARAMS& Param = m_pEngine->m_Param;
-  m_pEngine->m_ChangeInfo.nChangeType = FDE_TXTEDT_TEXTCHANGE_TYPE_Insert;
-  m_pEngine->m_ChangeInfo.wsDelete = m_wsRange;
-  Param.pEventSink->On_TextChanged(m_pEngine, m_pEngine->m_ChangeInfo);
-  m_pEngine->SetCaretPos(m_nIndex, TRUE);
-  return TRUE;
-}
-void CFDE_TxtEdtDoRecord_DeleteRange::Serialize(
-    CFX_ByteString& bsDoRecord) const {
-  CFX_ArchiveSaver ArchiveSaver;
-  ArchiveSaver << int32_t(FDE_TXTEDT_DORECORD_DEL);
-  ArchiveSaver << (int32_t)(uintptr_t)m_pEngine;
-  ArchiveSaver << (int32_t)m_bSel;
-  ArchiveSaver << m_nIndex;
-  ArchiveSaver << m_nCaret;
-  ArchiveSaver << m_wsRange;
-  int32_t nLength = ArchiveSaver.GetLength();
-  const uint8_t* lpSrcBuf = ArchiveSaver.GetBuffer();
-  FX_CHAR* lpDstBuf = bsDoRecord.GetBuffer(nLength);
-  FXSYS_memcpy(lpDstBuf, lpSrcBuf, nLength);
-  bsDoRecord.ReleaseBuffer(nLength);
-}
-void CFDE_TxtEdtDoRecord_DeleteRange::Deserialize(
-    const CFX_ByteStringC& bsDoRecord) {
-  CFX_ArchiveLoader ArchiveLoader((const uint8_t*)bsDoRecord.GetCStr(),
-                                  bsDoRecord.GetLength());
-  int32_t nType = 0;
-  ArchiveLoader >> nType;
-  FXSYS_assert(nType == FDE_TXTEDT_DORECORD_DEL);
-  int32_t nEngine = 0;
-  ArchiveLoader >> nEngine;
-  m_pEngine = (CFDE_TxtEdtEngine*)(uintptr_t)nEngine;
-  int32_t iSel = 0;
-  ArchiveLoader >> iSel;
-  m_bSel = !!iSel;
-  ArchiveLoader >> m_nIndex;
-  ArchiveLoader >> m_nCaret;
-  ArchiveLoader >> m_wsRange;
-}