Move xfa/fwl/core to xfa/fwl.

The core/ directory in FWL no-longer provides any context. This Cl moves all
of the core/ files up to the fwl/ folder.

As well, the CFWL_EvtFoo files are renamed CFWL_EventFoo and the CFWL_MsgFoo
files are renamed CFWL_MessageFoo. The event and message preceed the type in
order to keep the files sorted together and to make it clear that they're all
related.

Review-Url: https://codereview.chromium.org/2559173002

1 files changed, 0 insertions, 1644 deletions

diff --git a/xfa/fwl/core/cfwl_edit.cpp b/xfa/fwl/core/cfwl_edit.cpp
deleted file mode 100644
index c6c0ce29ba..0000000000
--- a/xfa/fwl/core/cfwl_edit.cpp
+++ /dev/null
@@ -1,1644 +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/fwl/core/cfwl_edit.h"
-
-#include <algorithm>
-#include <memory>
-#include <utility>
-#include <vector>
-
-#include "third_party/base/ptr_util.h"
-#include "third_party/base/stl_util.h"
-#include "xfa/fde/cfde_txtedtengine.h"
-#include "xfa/fde/fde_gedevice.h"
-#include "xfa/fde/fde_render.h"
-#include "xfa/fde/ifde_txtedtpage.h"
-#include "xfa/fgas/font/cfgas_gefont.h"
-#include "xfa/fwl/core/cfwl_app.h"
-#include "xfa/fwl/core/cfwl_caret.h"
-#include "xfa/fwl/core/cfwl_event.h"
-#include "xfa/fwl/core/cfwl_evtcheckword.h"
-#include "xfa/fwl/core/cfwl_evttextchanged.h"
-#include "xfa/fwl/core/cfwl_evtvalidate.h"
-#include "xfa/fwl/core/cfwl_msgkey.h"
-#include "xfa/fwl/core/cfwl_msgmouse.h"
-#include "xfa/fwl/core/cfwl_themebackground.h"
-#include "xfa/fwl/core/cfwl_themepart.h"
-#include "xfa/fwl/core/cfwl_widgetmgr.h"
-#include "xfa/fwl/core/ifwl_themeprovider.h"
-#include "xfa/fxfa/xfa_ffdoc.h"
-#include "xfa/fxfa/xfa_ffwidget.h"
-#include "xfa/fxgraphics/cfx_path.h"
-
-namespace {
-
-const int kEditMargin = 3;
-
-bool FX_EDIT_ISLATINWORD(FX_WCHAR c) {
-  return c == 0x2D || (c <= 0x005A && c >= 0x0041) ||
-         (c <= 0x007A && c >= 0x0061) || (c <= 0x02AF && c >= 0x00C0) ||
-         c == 0x0027;
-}
-
-void AddSquigglyPath(CFX_Path* pPathData,
-                     FX_FLOAT fStartX,
-                     FX_FLOAT fEndX,
-                     FX_FLOAT fY,
-                     FX_FLOAT fStep) {
-  pPathData->MoveTo(fStartX, fY);
-  int i = 1;
-  for (FX_FLOAT fx = fStartX + fStep; fx < fEndX; fx += fStep, ++i)
-    pPathData->LineTo(fx, fY + (i & 1) * fStep);
-}
-
-}  // namespace
-
-CFWL_Edit::CFWL_Edit(const CFWL_App* app,
-                     std::unique_ptr<CFWL_WidgetProperties> properties,
-                     CFWL_Widget* pOuter)
-    : CFWL_Widget(app, std::move(properties), pOuter),
-      m_fVAlignOffset(0.0f),
-      m_fScrollOffsetX(0.0f),
-      m_fScrollOffsetY(0.0f),
-      m_bLButtonDown(false),
-      m_nSelStart(0),
-      m_nLimit(-1),
-      m_fFontSize(0),
-      m_bSetRange(false),
-      m_iMax(0xFFFFFFF),
-      m_iCurRecord(-1),
-      m_iMaxRecord(128) {
-  m_rtClient.Reset();
-  m_rtEngine.Reset();
-  m_rtStatic.Reset();
-
-  InitCaret();
-}
-
-CFWL_Edit::~CFWL_Edit() {
-  if (m_pProperties->m_dwStates & FWL_WGTSTATE_Focused)
-    HideCaret(nullptr);
-  ClearRecord();
-}
-
-FWL_Type CFWL_Edit::GetClassID() const {
-  return FWL_Type::Edit;
-}
-
-CFX_RectF CFWL_Edit::GetWidgetRect() {
-  CFX_RectF rect = m_pProperties->m_rtWidget;
-  if (m_pProperties->m_dwStyleExes & FWL_STYLEEXT_EDT_OuterScrollbar) {
-    if (IsShowScrollBar(true)) {
-      FX_FLOAT* pfWidth = static_cast<FX_FLOAT*>(
-          GetThemeCapacity(CFWL_WidgetCapacity::ScrollBarWidth));
-      rect.width += *pfWidth;
-      rect.width += kEditMargin;
-    }
-    if (IsShowScrollBar(false)) {
-      FX_FLOAT* pfWidth = static_cast<FX_FLOAT*>(
-          GetThemeCapacity(CFWL_WidgetCapacity::ScrollBarWidth));
-      rect.height += *pfWidth;
-      rect.height += kEditMargin;
-    }
-  }
-  return rect;
-}
-
-CFX_RectF CFWL_Edit::GetAutosizedWidgetRect() {
-  CFX_RectF rect;
-  if (m_EdtEngine.GetTextLength() > 0) {
-    CFX_SizeF sz = CalcTextSize(
-        m_EdtEngine.GetText(0, -1), m_pProperties->m_pThemeProvider,
-        !!(m_pProperties->m_dwStyleExes & FWL_STYLEEXT_EDT_MultiLine));
-    rect.Set(0, 0, sz.x, sz.y);
-  }
-  InflateWidgetRect(rect);
-  return rect;
-}
-
-void CFWL_Edit::SetStates(uint32_t dwStates) {
-  if ((m_pProperties->m_dwStates & FWL_WGTSTATE_Invisible) ||
-      (m_pProperties->m_dwStates & FWL_WGTSTATE_Disabled)) {
-    HideCaret(nullptr);
-  }
-  CFWL_Widget::SetStates(dwStates);
-}
-
-void CFWL_Edit::Update() {
-  if (IsLocked())
-    return;
-  if (!m_pProperties->m_pThemeProvider)
-    m_pProperties->m_pThemeProvider = GetAvailableTheme();
-
-  Layout();
-  if (m_rtClient.IsEmpty())
-    return;
-
-  UpdateEditEngine();
-  UpdateVAlignment();
-  UpdateScroll();
-  InitCaret();
-}
-
-FWL_WidgetHit CFWL_Edit::HitTest(FX_FLOAT fx, FX_FLOAT fy) {
-  if (m_pProperties->m_dwStyleExes & FWL_STYLEEXT_EDT_OuterScrollbar) {
-    if (IsShowScrollBar(true)) {
-      if (m_pVertScrollBar->GetWidgetRect().Contains(fx, fy))
-        return FWL_WidgetHit::VScrollBar;
-    }
-    if (IsShowScrollBar(false)) {
-      if (m_pHorzScrollBar->GetWidgetRect().Contains(fx, fy))
-        return FWL_WidgetHit::HScrollBar;
-    }
-  }
-  if (m_rtClient.Contains(fx, fy))
-    return FWL_WidgetHit::Edit;
-  return FWL_WidgetHit::Unknown;
-}
-
-void CFWL_Edit::AddSpellCheckObj(CFX_Path& PathData,
-                                 int32_t nStart,
-                                 int32_t nCount,
-                                 FX_FLOAT fOffSetX,
-                                 FX_FLOAT fOffSetY) {
-  FX_FLOAT fStartX = 0.0f;
-  FX_FLOAT fEndX = 0.0f;
-  FX_FLOAT fY = 0.0f;
-  FX_FLOAT fStep = 0.0f;
-  IFDE_TxtEdtPage* pPage = m_EdtEngine.GetPage(0);
-  CFX_RectFArray rectArray;
-  CFX_RectF rectText;
-  const FDE_TXTEDTPARAMS* txtEdtParams = m_EdtEngine.GetEditParams();
-  FX_FLOAT fAsent = static_cast<FX_FLOAT>(txtEdtParams->pFont->GetAscent()) *
-                    txtEdtParams->fFontSize / 1000;
-  pPage->CalcRangeRectArray(nStart, nCount, rectArray);
-
-  for (int i = 0; i < rectArray.GetSize(); i++) {
-    rectText = rectArray.GetAt(i);
-    fY = rectText.top + fAsent + fOffSetY;
-    fStep = txtEdtParams->fFontSize / 16.0f;
-    fStartX = rectText.left + fOffSetX;
-    fEndX = fStartX + rectText.Width();
-    AddSquigglyPath(&PathData, fStartX, fEndX, fY, fStep);
-  }
-}
-
-void CFWL_Edit::DrawSpellCheck(CFX_Graphics* pGraphics,
-                               const CFX_Matrix* pMatrix) {
-  pGraphics->SaveGraphState();
-  if (pMatrix)
-    pGraphics->ConcatMatrix(const_cast<CFX_Matrix*>(pMatrix));
-
-  CFX_Color crLine(0xFFFF0000);
-  CFWL_EvtCheckWord checkWordEvent(this);
-
-  CFX_ByteString sLatinWord;
-  CFX_Path pathSpell;
-  pathSpell.Create();
-
-  int32_t nStart = 0;
-  FX_FLOAT fOffSetX = m_rtEngine.left - m_fScrollOffsetX;
-  FX_FLOAT fOffSetY = m_rtEngine.top - m_fScrollOffsetY + m_fVAlignOffset;
-
-  CFX_WideString wsSpell = GetText();
-  int32_t nContentLen = wsSpell.GetLength();
-  for (int i = 0; i < nContentLen; i++) {
-    if (FX_EDIT_ISLATINWORD(wsSpell[i])) {
-      if (sLatinWord.IsEmpty())
-        nStart = i;
-      sLatinWord += (FX_CHAR)wsSpell[i];
-      continue;
-    }
-    checkWordEvent.bsWord = sLatinWord;
-    checkWordEvent.bCheckWord = true;
-    DispatchEvent(&checkWordEvent);
-
-    if (!sLatinWord.IsEmpty() && !checkWordEvent.bCheckWord) {
-      AddSpellCheckObj(pathSpell, nStart, sLatinWord.GetLength(), fOffSetX,
-                       fOffSetY);
-    }
-    sLatinWord.clear();
-  }
-
-  checkWordEvent.bsWord = sLatinWord;
-  checkWordEvent.bCheckWord = true;
-  DispatchEvent(&checkWordEvent);
-
-  if (!sLatinWord.IsEmpty() && !checkWordEvent.bCheckWord) {
-    AddSpellCheckObj(pathSpell, nStart, sLatinWord.GetLength(), fOffSetX,
-                     fOffSetY);
-  }
-  if (!pathSpell.IsEmpty()) {
-    CFX_RectF rtClip = m_rtEngine;
-    CFX_Matrix mt;
-    mt.Set(1, 0, 0, 1, fOffSetX, fOffSetY);
-    if (pMatrix) {
-      pMatrix->TransformRect(rtClip);
-      mt.Concat(*pMatrix);
-    }
-    pGraphics->SetClipRect(rtClip);
-    pGraphics->SetStrokeColor(&crLine);
-    pGraphics->SetLineWidth(0);
-    pGraphics->StrokePath(&pathSpell, nullptr);
-  }
-  pGraphics->RestoreGraphState();
-}
-
-void CFWL_Edit::DrawWidget(CFX_Graphics* pGraphics, const CFX_Matrix* pMatrix) {
-  if (!pGraphics)
-    return;
-  if (!m_pProperties->m_pThemeProvider)
-    return;
-  if (m_rtClient.IsEmpty())
-    return;
-
-  IFWL_ThemeProvider* pTheme = m_pProperties->m_pThemeProvider;
-  if (!m_pWidgetMgr->IsFormDisabled())
-    DrawTextBk(pGraphics, pTheme, pMatrix);
-  DrawContent(pGraphics, pTheme, pMatrix);
-
-  if ((m_pProperties->m_dwStates & FWL_WGTSTATE_Focused) &&
-      !(m_pProperties->m_dwStyleExes & FWL_STYLEEXT_EDT_ReadOnly)) {
-    DrawSpellCheck(pGraphics, pMatrix);
-  }
-  if (HasBorder())
-    DrawBorder(pGraphics, CFWL_Part::Border, pTheme, pMatrix);
-  if (HasEdge())
-    DrawEdge(pGraphics, CFWL_Part::Edge, pTheme, pMatrix);
-}
-
-void CFWL_Edit::SetThemeProvider(IFWL_ThemeProvider* pThemeProvider) {
-  if (!pThemeProvider)
-    return;
-  if (m_pHorzScrollBar)
-    m_pHorzScrollBar->SetThemeProvider(pThemeProvider);
-  if (m_pVertScrollBar)
-    m_pVertScrollBar->SetThemeProvider(pThemeProvider);
-  if (m_pCaret)
-    m_pCaret->SetThemeProvider(pThemeProvider);
-  m_pProperties->m_pThemeProvider = pThemeProvider;
-}
-
-void CFWL_Edit::SetText(const CFX_WideString& wsText) {
-  m_EdtEngine.SetText(wsText);
-}
-
-int32_t CFWL_Edit::GetTextLength() const {
-  return m_EdtEngine.GetTextLength();
-}
-
-CFX_WideString CFWL_Edit::GetText() const {
-  return m_EdtEngine.GetText(0, -1);
-}
-
-void CFWL_Edit::ClearText() {
-  m_EdtEngine.ClearText();
-}
-
-void CFWL_Edit::AddSelRange(int32_t nStart) {
-  m_EdtEngine.AddSelRange(nStart, -1);
-}
-
-int32_t CFWL_Edit::CountSelRanges() const {
-  return m_EdtEngine.CountSelRanges();
-}
-
-int32_t CFWL_Edit::GetSelRange(int32_t nIndex, int32_t* nStart) const {
-  return m_EdtEngine.GetSelRange(nIndex, nStart);
-}
-
-void CFWL_Edit::ClearSelections() {
-  m_EdtEngine.ClearSelection();
-}
-
-int32_t CFWL_Edit::GetLimit() const {
-  return m_nLimit;
-}
-
-void CFWL_Edit::SetLimit(int32_t nLimit) {
-  m_nLimit = nLimit;
-  m_EdtEngine.SetLimit(nLimit);
-}
-
-void CFWL_Edit::SetAliasChar(FX_WCHAR wAlias) {
-  m_EdtEngine.SetAliasChar(wAlias);
-}
-
-bool CFWL_Edit::Copy(CFX_WideString& wsCopy) {
-  int32_t nCount = m_EdtEngine.CountSelRanges();
-  if (nCount == 0)
-    return false;
-
-  wsCopy.clear();
-  int32_t nStart;
-  int32_t nLength;
-  for (int32_t i = 0; i < nCount; i++) {
-    nLength = m_EdtEngine.GetSelRange(i, &nStart);
-    wsCopy += m_EdtEngine.GetText(nStart, nLength);
-  }
-  return true;
-}
-
-bool CFWL_Edit::Cut(CFX_WideString& wsCut) {
-  int32_t nCount = m_EdtEngine.CountSelRanges();
-  if (nCount == 0)
-    return false;
-
-  wsCut.clear();
-  CFX_WideString wsTemp;
-  int32_t nStart, nLength;
-  for (int32_t i = 0; i < nCount; i++) {
-    nLength = m_EdtEngine.GetSelRange(i, &nStart);
-    wsTemp = m_EdtEngine.GetText(nStart, nLength);
-    wsCut += wsTemp;
-    wsTemp.clear();
-  }
-  m_EdtEngine.Delete(0);
-  return true;
-}
-
-bool CFWL_Edit::Paste(const CFX_WideString& wsPaste) {
-  int32_t nCaret = m_EdtEngine.GetCaretPos();
-  int32_t iError =
-      m_EdtEngine.Insert(nCaret, wsPaste.c_str(), wsPaste.GetLength());
-  if (iError < 0) {
-    ProcessInsertError(iError);
-    return false;
-  }
-  return true;
-}
-
-bool CFWL_Edit::Redo(const IFDE_TxtEdtDoRecord* pRecord) {
-  if (m_pProperties->m_dwStyleExes & FWL_STYLEEXT_EDT_NoRedoUndo)
-    return true;
-  return m_EdtEngine.Redo(pRecord);
-}
-
-bool CFWL_Edit::Undo(const IFDE_TxtEdtDoRecord* pRecord) {
-  if (m_pProperties->m_dwStyleExes & FWL_STYLEEXT_EDT_NoRedoUndo)
-    return true;
-  return m_EdtEngine.Undo(pRecord);
-}
-
-bool CFWL_Edit::Undo() {
-  if (!CanUndo())
-    return false;
-  return Undo(m_DoRecords[m_iCurRecord--].get());
-}
-
-bool CFWL_Edit::Redo() {
-  if (!CanRedo())
-    return false;
-  return Redo(m_DoRecords[++m_iCurRecord].get());
-}
-
-bool CFWL_Edit::CanUndo() {
-  return m_iCurRecord >= 0;
-}
-
-bool CFWL_Edit::CanRedo() {
-  return m_iCurRecord < pdfium::CollectionSize<int32_t>(m_DoRecords) - 1;
-}
-
-void CFWL_Edit::SetOuter(CFWL_Widget* pOuter) {
-  m_pOuter = pOuter;
-}
-
-void CFWL_Edit::OnCaretChanged() {
-  if (m_rtEngine.IsEmpty())
-    return;
-  if ((m_pProperties->m_dwStates & FWL_WGTSTATE_Focused) == 0)
-    return;
-
-  bool bRepaintContent = UpdateOffset();
-  UpdateCaret();
-  CFX_RectF rtInvalid;
-  rtInvalid.Set(0, 0, 0, 0);
-  bool bRepaintScroll = false;
-  if (m_pProperties->m_dwStyleExes & FWL_STYLEEXT_EDT_MultiLine) {
-    CFWL_ScrollBar* pScroll = UpdateScroll();
-    if (pScroll) {
-      rtInvalid = pScroll->GetWidgetRect();
-      bRepaintScroll = true;
-    }
-  }
-  if (bRepaintContent || bRepaintScroll) {
-    if (bRepaintContent)
-      rtInvalid.Union(m_rtEngine);
-    Repaint(&rtInvalid);
-  }
-}
-
-void CFWL_Edit::OnTextChanged(const FDE_TXTEDT_TEXTCHANGE_INFO& ChangeInfo) {
-  if (m_pProperties->m_dwStyleExes & FWL_STYLEEXT_EDT_VAlignMask)
-    UpdateVAlignment();
-
-  CFX_RectF rtTemp;
-  GetClientRect(rtTemp);
-
-  CFWL_EvtTextChanged event(this);
-  event.wsPrevText = ChangeInfo.wsPrevText;
-  DispatchEvent(&event);
-
-  LayoutScrollBar();
-  Repaint(&rtTemp);
-}
-
-void CFWL_Edit::OnSelChanged() {
-  CFX_RectF rtTemp;
-  GetClientRect(rtTemp);
-  Repaint(&rtTemp);
-}
-
-bool CFWL_Edit::OnPageLoad(int32_t nPageIndex) {
-  IFDE_TxtEdtPage* pPage = m_EdtEngine.GetPage(nPageIndex);
-  if (!pPage)
-    return false;
-
-  pPage->LoadPage(nullptr, nullptr);
-  return true;
-}
-
-bool CFWL_Edit::OnPageUnload(int32_t nPageIndex) {
-  IFDE_TxtEdtPage* pPage = m_EdtEngine.GetPage(nPageIndex);
-  if (!pPage)
-    return false;
-
-  pPage->UnloadPage(nullptr);
-  return true;
-}
-
-void CFWL_Edit::OnAddDoRecord(std::unique_ptr<IFDE_TxtEdtDoRecord> pRecord) {
-  AddDoRecord(std::move(pRecord));
-}
-
-bool CFWL_Edit::OnValidate(const CFX_WideString& wsText) {
-  CFWL_Widget* pDst = GetOuter();
-  if (!pDst)
-    pDst = this;
-
-  CFWL_EvtValidate event(this);
-  event.wsInsert = wsText;
-  event.bValidate = true;
-  DispatchEvent(&event);
-  return event.bValidate;
-}
-
-void CFWL_Edit::SetScrollOffset(FX_FLOAT fScrollOffset) {
-  m_fScrollOffsetY = fScrollOffset;
-}
-
-void CFWL_Edit::DrawTextBk(CFX_Graphics* pGraphics,
-                           IFWL_ThemeProvider* pTheme,
-                           const CFX_Matrix* pMatrix) {
-  CFWL_ThemeBackground param;
-  param.m_pWidget = this;
-  param.m_iPart = CFWL_Part::Background;
-  param.m_bStaticBackground = false;
-  param.m_dwStates = m_pProperties->m_dwStyleExes & FWL_STYLEEXT_EDT_ReadOnly
-                         ? CFWL_PartState_ReadOnly
-                         : CFWL_PartState_Normal;
-  uint32_t dwStates = (m_pProperties->m_dwStates & FWL_WGTSTATE_Disabled);
-  if (dwStates)
-    param.m_dwStates = CFWL_PartState_Disabled;
-  param.m_pGraphics = pGraphics;
-  param.m_matrix = *pMatrix;
-  param.m_rtPart = m_rtClient;
-  pTheme->DrawBackground(&param);
-
-  if (!IsShowScrollBar(true) || !IsShowScrollBar(false))
-    return;
-
-  CFX_RectF rtScroll = m_pHorzScrollBar->GetWidgetRect();
-
-  CFX_RectF rtStatic;
-  rtStatic.Set(m_rtClient.right() - rtScroll.height,
-               m_rtClient.bottom() - rtScroll.height, rtScroll.height,
-               rtScroll.height);
-  param.m_bStaticBackground = true;
-  param.m_bMaximize = true;
-  param.m_rtPart = rtStatic;
-  pTheme->DrawBackground(&param);
-}
-
-void CFWL_Edit::DrawContent(CFX_Graphics* pGraphics,
-                            IFWL_ThemeProvider* pTheme,
-                            const CFX_Matrix* pMatrix) {
-  IFDE_TxtEdtPage* pPage = m_EdtEngine.GetPage(0);
-  if (!pPage)
-    return;
-
-  pGraphics->SaveGraphState();
-  if (m_pProperties->m_dwStyleExes & FWL_STYLEEXT_EDT_CombText)
-    pGraphics->SaveGraphState();
-
-  CFX_RectF rtClip = m_rtEngine;
-  FX_FLOAT fOffSetX = m_rtEngine.left - m_fScrollOffsetX;
-  FX_FLOAT fOffSetY = m_rtEngine.top - m_fScrollOffsetY + m_fVAlignOffset;
-  CFX_Matrix mt;
-  mt.Set(1, 0, 0, 1, fOffSetX, fOffSetY);
-  if (pMatrix) {
-    pMatrix->TransformRect(rtClip);
-    mt.Concat(*pMatrix);
-  }
-
-  bool bShowSel = (m_pProperties->m_dwStyleExes & FWL_STYLEEXT_EDT_NoHideSel) ||
-                  (m_pProperties->m_dwStates & FWL_WGTSTATE_Focused);
-  if (bShowSel) {
-    CFWL_Widget* pForm = m_pWidgetMgr->GetSystemFormWidget(this);
-    if (pForm) {
-      bShowSel = (pForm->GetStates() & FWL_WGTSTATE_Deactivated) !=
-                 FWL_WGTSTATE_Deactivated;
-    }
-  }
-
-  int32_t nSelCount = m_EdtEngine.CountSelRanges();
-  if (bShowSel && nSelCount > 0) {
-    int32_t nPageCharStart = pPage->GetCharStart();
-    int32_t nPageCharCount = pPage->GetCharCount();
-    int32_t nPageCharEnd = nPageCharStart + nPageCharCount - 1;
-    int32_t nCharCount;
-    int32_t nCharStart;
-    CFX_RectFArray rectArr;
-    int32_t i = 0;
-    for (i = 0; i < nSelCount; i++) {
-      nCharCount = m_EdtEngine.GetSelRange(i, &nCharStart);
-      int32_t nCharEnd = nCharStart + nCharCount - 1;
-      if (nCharEnd < nPageCharStart || nCharStart > nPageCharEnd)
-        continue;
-
-      int32_t nBgn = std::max(nCharStart, nPageCharStart);
-      int32_t nEnd = std::min(nCharEnd, nPageCharEnd);
-      pPage->CalcRangeRectArray(nBgn - nPageCharStart, nEnd - nBgn + 1,
-                                rectArr);
-    }
-
-    int32_t nCount = rectArr.GetSize();
-    CFX_Path path;
-    path.Create();
-    for (i = 0; i < nCount; i++) {
-      rectArr[i].left += fOffSetX;
-      rectArr[i].top += fOffSetY;
-      path.AddRectangle(rectArr[i].left, rectArr[i].top, rectArr[i].width,
-                        rectArr[i].height);
-    }
-    pGraphics->SetClipRect(rtClip);
-
-    CFWL_ThemeBackground param;
-    param.m_pGraphics = pGraphics;
-    param.m_matrix = *pMatrix;
-    param.m_pWidget = this;
-    param.m_iPart = CFWL_Part::Background;
-    param.m_pPath = &path;
-    pTheme->DrawBackground(&param);
-  }
-
-  CFX_RenderDevice* pRenderDev = pGraphics->GetRenderDevice();
-  if (!pRenderDev)
-    return;
-
-  std::unique_ptr<CFDE_RenderDevice> pRenderDevice(
-      new CFDE_RenderDevice(pRenderDev, false));
-  std::unique_ptr<CFDE_RenderContext> pRenderContext(new CFDE_RenderContext);
-  pRenderDevice->SetClipRect(rtClip);
-  pRenderContext->StartRender(pRenderDevice.get(), pPage, mt);
-  pRenderContext->DoRender(nullptr);
-
-  if (m_pProperties->m_dwStyleExes & FWL_STYLEEXT_EDT_CombText) {
-    pGraphics->RestoreGraphState();
-    CFX_Path path;
-    path.Create();
-    int32_t iLimit = m_nLimit > 0 ? m_nLimit : 1;
-    FX_FLOAT fStep = m_rtEngine.width / iLimit;
-    FX_FLOAT fLeft = m_rtEngine.left + 1;
-    for (int32_t i = 1; i < iLimit; i++) {
-      fLeft += fStep;
-      path.AddLine(fLeft, m_rtClient.top, fLeft, m_rtClient.bottom());
-    }
-
-    CFWL_ThemeBackground param;
-    param.m_pGraphics = pGraphics;
-    param.m_matrix = *pMatrix;
-    param.m_pWidget = this;
-    param.m_iPart = CFWL_Part::CombTextLine;
-    param.m_pPath = &path;
-    pTheme->DrawBackground(&param);
-  }
-  pGraphics->RestoreGraphState();
-}
-
-void CFWL_Edit::UpdateEditEngine() {
-  UpdateEditParams();
-  UpdateEditLayout();
-  if (m_nLimit > -1)
-    m_EdtEngine.SetLimit(m_nLimit);
-}
-
-void CFWL_Edit::UpdateEditParams() {
-  FDE_TXTEDTPARAMS params;
-  params.nHorzScale = 100;
-  params.fPlateWidth = m_rtEngine.width;
-  params.fPlateHeight = m_rtEngine.height;
-  if (m_pProperties->m_dwStyles & FWL_WGTSTYLE_RTLLayout)
-    params.dwLayoutStyles |= FDE_TEXTEDITLAYOUT_RTL;
-  if (m_pProperties->m_dwStyleExes & FWL_STYLEEXT_EDT_VerticalLayout)
-    params.dwLayoutStyles |= FDE_TEXTEDITLAYOUT_DocVertical;
-  if (m_pProperties->m_dwStyleExes & FWL_STYLEEXT_EDT_VerticalChars)
-    params.dwLayoutStyles |= FDE_TEXTEDITLAYOUT_CharVertial;
-  if (m_pProperties->m_dwStyleExes & FWL_STYLEEXT_EDT_ReverseLine)
-    params.dwLayoutStyles |= FDE_TEXTEDITLAYOUT_LineReserve;
-  if (m_pProperties->m_dwStyleExes & FWL_STYLEEXT_EDT_ArabicShapes)
-    params.dwLayoutStyles |= FDE_TEXTEDITLAYOUT_ArabicShapes;
-  if (m_pProperties->m_dwStyleExes & FWL_STYLEEXT_EDT_ExpandTab)
-    params.dwLayoutStyles |= FDE_TEXTEDITLAYOUT_ExpandTab;
-  if (m_pProperties->m_dwStyleExes & FWL_STYLEEXT_EDT_CombText)
-    params.dwLayoutStyles |= FDE_TEXTEDITLAYOUT_CombText;
-  if (m_pProperties->m_dwStyleExes & FWL_STYLEEXT_EDT_LastLineHeight)
-    params.dwLayoutStyles |= FDE_TEXTEDITLAYOUT_LastLineHeight;
-  if (m_pProperties->m_dwStyleExes & FWL_STYLEEXT_EDT_Validate)
-    params.dwMode |= FDE_TEXTEDITMODE_Validate;
-  if (m_pProperties->m_dwStyleExes & FWL_STYLEEXT_EDT_Password)
-    params.dwMode |= FDE_TEXTEDITMODE_Password;
-
-  switch (m_pProperties->m_dwStyleExes & FWL_STYLEEXT_EDT_HAlignMask) {
-    case FWL_STYLEEXT_EDT_HNear: {
-      params.dwAlignment |= FDE_TEXTEDITALIGN_Left;
-      break;
-    }
-    case FWL_STYLEEXT_EDT_HCenter: {
-      params.dwAlignment |= FDE_TEXTEDITALIGN_Center;
-      break;
-    }
-    case FWL_STYLEEXT_EDT_HFar: {
-      params.dwAlignment |= FDE_TEXTEDITALIGN_Right;
-      break;
-    }
-    default:
-      break;
-  }
-  switch (m_pProperties->m_dwStyleExes & FWL_STYLEEXT_EDT_HAlignModeMask) {
-    case FWL_STYLEEXT_EDT_Justified: {
-      params.dwAlignment |= FDE_TEXTEDITALIGN_Justified;
-      break;
-    }
-    case FWL_STYLEEXT_EDT_Distributed: {
-      params.dwAlignment |= FDE_TEXTEDITALIGN_Distributed;
-      break;
-    }
-    default: {
-      params.dwAlignment |= FDE_TEXTEDITALIGN_Normal;
-      break;
-    }
-  }
-  if (m_pProperties->m_dwStyleExes & FWL_STYLEEXT_EDT_MultiLine) {
-    params.dwMode |= FDE_TEXTEDITMODE_MultiLines;
-    if ((m_pProperties->m_dwStyles & FWL_WGTSTYLE_HScroll) == 0 &&
-        (m_pProperties->m_dwStyleExes & FWL_STYLEEXT_EDT_AutoHScroll) == 0) {
-      params.dwMode |=
-          FDE_TEXTEDITMODE_AutoLineWrap | FDE_TEXTEDITMODE_LimitArea_Horz;
-    }
-    if ((m_pProperties->m_dwStyles & FWL_WGTSTYLE_VScroll) == 0 &&
-        (m_pProperties->m_dwStyleExes & FWL_STYLEEXT_EDT_AutoVScroll) == 0) {
-      params.dwMode |= FDE_TEXTEDITMODE_LimitArea_Vert;
-    } else {
-      params.fPlateHeight = 0x00FFFFFF;
-    }
-  } else if ((m_pProperties->m_dwStyleExes & FWL_STYLEEXT_EDT_AutoHScroll) ==
-             0) {
-    params.dwMode |= FDE_TEXTEDITMODE_LimitArea_Horz;
-  }
-  if ((m_pProperties->m_dwStyleExes & FWL_STYLEEXT_EDT_ReadOnly) ||
-      (m_pProperties->m_dwStates & FWL_WGTSTATE_Disabled)) {
-    params.dwMode |= FDE_TEXTEDITMODE_ReadOnly;
-  }
-
-  FX_FLOAT* pFontSize =
-      static_cast<FX_FLOAT*>(GetThemeCapacity(CFWL_WidgetCapacity::FontSize));
-  if (!pFontSize)
-    return;
-
-  m_fFontSize = *pFontSize;
-  uint32_t* pFontColor =
-      static_cast<uint32_t*>(GetThemeCapacity(CFWL_WidgetCapacity::TextColor));
-  if (!pFontColor)
-    return;
-
-  params.dwFontColor = *pFontColor;
-  FX_FLOAT* pLineHeight =
-      static_cast<FX_FLOAT*>(GetThemeCapacity(CFWL_WidgetCapacity::LineHeight));
-  if (!pLineHeight)
-    return;
-
-  params.fLineSpace = *pLineHeight;
-  CFGAS_GEFont* pFont =
-      static_cast<CFGAS_GEFont*>(GetThemeCapacity(CFWL_WidgetCapacity::Font));
-  if (!pFont)
-    return;
-
-  params.pFont = pFont;
-  params.fFontSize = m_fFontSize;
-  params.nLineCount = (int32_t)(params.fPlateHeight / params.fLineSpace);
-  if (params.nLineCount <= 0)
-    params.nLineCount = 1;
-  params.fTabWidth = params.fFontSize * 1;
-  params.bTabEquidistant = true;
-  params.wLineBreakChar = L'\n';
-  params.nCharRotation = 0;
-  params.pEventSink = this;
-  m_EdtEngine.SetEditParams(params);
-}
-
-void CFWL_Edit::UpdateEditLayout() {
-  if (m_EdtEngine.GetTextLength() <= 0)
-    m_EdtEngine.SetTextByStream(nullptr);
-
-  IFDE_TxtEdtPage* pPage = m_EdtEngine.GetPage(0);
-  if (pPage)
-    pPage->UnloadPage(nullptr);
-
-  m_EdtEngine.StartLayout();
-  m_EdtEngine.DoLayout(nullptr);
-  m_EdtEngine.EndLayout();
-  pPage = m_EdtEngine.GetPage(0);
-  if (pPage)
-    pPage->LoadPage(nullptr, nullptr);
-}
-
-bool CFWL_Edit::UpdateOffset() {
-  CFX_RectF rtCaret;
-  m_EdtEngine.GetCaretRect(rtCaret);
-  FX_FLOAT fOffSetX = m_rtEngine.left - m_fScrollOffsetX;
-  FX_FLOAT fOffSetY = m_rtEngine.top - m_fScrollOffsetY + m_fVAlignOffset;
-  rtCaret.Offset(fOffSetX, fOffSetY);
-  const CFX_RectF& rtEidt = m_rtEngine;
-  if (rtEidt.Contains(rtCaret)) {
-    IFDE_TxtEdtPage* pPage = m_EdtEngine.GetPage(0);
-    if (!pPage)
-      return false;
-
-    CFX_RectF rtFDE = pPage->GetContentsBox();
-    rtFDE.Offset(fOffSetX, fOffSetY);
-    if (rtFDE.right() < rtEidt.right() && m_fScrollOffsetX > 0) {
-      m_fScrollOffsetX += rtFDE.right() - rtEidt.right();
-      m_fScrollOffsetX = std::max(m_fScrollOffsetX, 0.0f);
-    }
-    if (rtFDE.bottom() < rtEidt.bottom() && m_fScrollOffsetY > 0) {
-      m_fScrollOffsetY += rtFDE.bottom() - rtEidt.bottom();
-      m_fScrollOffsetY = std::max(m_fScrollOffsetY, 0.0f);
-    }
-    return false;
-  }
-
-  FX_FLOAT offsetX = 0.0;
-  FX_FLOAT offsetY = 0.0;
-  if (rtCaret.left < rtEidt.left)
-    offsetX = rtCaret.left - rtEidt.left;
-  if (rtCaret.right() > rtEidt.right())
-    offsetX = rtCaret.right() - rtEidt.right();
-  if (rtCaret.top < rtEidt.top)
-    offsetY = rtCaret.top - rtEidt.top;
-  if (rtCaret.bottom() > rtEidt.bottom())
-    offsetY = rtCaret.bottom() - rtEidt.bottom();
-  m_fScrollOffsetX += offsetX;
-  m_fScrollOffsetY += offsetY;
-  if (m_fFontSize > m_rtEngine.height)
-    m_fScrollOffsetY = 0;
-  return true;
-}
-
-bool CFWL_Edit::UpdateOffset(CFWL_ScrollBar* pScrollBar, FX_FLOAT fPosChanged) {
-  if (pScrollBar == m_pHorzScrollBar.get())
-    m_fScrollOffsetX += fPosChanged;
-  else
-    m_fScrollOffsetY += fPosChanged;
-  return true;
-}
-
-void CFWL_Edit::UpdateVAlignment() {
-  IFDE_TxtEdtPage* pPage = m_EdtEngine.GetPage(0);
-  if (!pPage)
-    return;
-
-  const CFX_RectF& rtFDE = pPage->GetContentsBox();
-  FX_FLOAT fOffsetY = 0.0f;
-  FX_FLOAT fSpaceAbove = 0.0f;
-  FX_FLOAT fSpaceBelow = 0.0f;
-  CFX_SizeF* pSpace = static_cast<CFX_SizeF*>(
-      GetThemeCapacity(CFWL_WidgetCapacity::SpaceAboveBelow));
-  if (pSpace) {
-    fSpaceAbove = pSpace->x;
-    fSpaceBelow = pSpace->y;
-  }
-  if (fSpaceAbove < 0.1f)
-    fSpaceAbove = 0;
-  if (fSpaceBelow < 0.1f)
-    fSpaceBelow = 0;
-
-  if (m_pProperties->m_dwStyleExes & FWL_STYLEEXT_EDT_VCenter) {
-    fOffsetY = (m_rtEngine.height - rtFDE.height) / 2;
-    if (fOffsetY < (fSpaceAbove + fSpaceBelow) / 2 &&
-        fSpaceAbove < fSpaceBelow) {
-      return;
-    }
-    fOffsetY += (fSpaceAbove - fSpaceBelow) / 2;
-  } else if (m_pProperties->m_dwStyleExes & FWL_STYLEEXT_EDT_VFar) {
-    fOffsetY = (m_rtEngine.height - rtFDE.height);
-    fOffsetY -= fSpaceBelow;
-  } else {
-    fOffsetY += fSpaceAbove;
-  }
-  m_fVAlignOffset = std::max(fOffsetY, 0.0f);
-}
-
-void CFWL_Edit::UpdateCaret() {
-  CFX_RectF rtFDE;
-  m_EdtEngine.GetCaretRect(rtFDE);
-
-  rtFDE.Offset(m_rtEngine.left - m_fScrollOffsetX,
-               m_rtEngine.top - m_fScrollOffsetY + m_fVAlignOffset);
-  CFX_RectF rtCaret;
-  rtCaret.Set(rtFDE.left, rtFDE.top, rtFDE.width, rtFDE.height);
-
-  CFX_RectF rtClient;
-  GetClientRect(rtClient);
-  rtCaret.Intersect(rtClient);
-
-  if (rtCaret.left > rtClient.right()) {
-    FX_FLOAT right = rtCaret.right();
-    rtCaret.left = rtClient.right() - 1;
-    rtCaret.width = right - rtCaret.left;
-  }
-
-  if (m_pProperties->m_dwStates & FWL_WGTSTATE_Focused && !rtCaret.IsEmpty())
-    ShowCaret(&rtCaret);
-  else
-    HideCaret(&rtCaret);
-}
-
-CFWL_ScrollBar* CFWL_Edit::UpdateScroll() {
-  bool bShowHorz =
-      m_pHorzScrollBar &&
-      ((m_pHorzScrollBar->GetStates() & FWL_WGTSTATE_Invisible) == 0);
-  bool bShowVert =
-      m_pVertScrollBar &&
-      ((m_pVertScrollBar->GetStates() & FWL_WGTSTATE_Invisible) == 0);
-  if (!bShowHorz && !bShowVert)
-    return nullptr;
-
-  IFDE_TxtEdtPage* pPage = m_EdtEngine.GetPage(0);
-  if (!pPage)
-    return nullptr;
-
-  const CFX_RectF& rtFDE = pPage->GetContentsBox();
-  CFWL_ScrollBar* pRepaint = nullptr;
-  if (bShowHorz) {
-    CFX_RectF rtScroll = m_pHorzScrollBar->GetWidgetRect();
-    if (rtScroll.width < rtFDE.width) {
-      m_pHorzScrollBar->LockUpdate();
-      FX_FLOAT fRange = rtFDE.width - rtScroll.width;
-      m_pHorzScrollBar->SetRange(0.0f, fRange);
-
-      FX_FLOAT fPos = std::min(std::max(m_fScrollOffsetX, 0.0f), fRange);
-      m_pHorzScrollBar->SetPos(fPos);
-      m_pHorzScrollBar->SetTrackPos(fPos);
-      m_pHorzScrollBar->SetPageSize(rtScroll.width);
-      m_pHorzScrollBar->SetStepSize(rtScroll.width / 10);
-      m_pHorzScrollBar->RemoveStates(FWL_WGTSTATE_Disabled);
-      m_pHorzScrollBar->UnlockUpdate();
-      m_pHorzScrollBar->Update();
-      pRepaint = m_pHorzScrollBar.get();
-    } else if ((m_pHorzScrollBar->GetStates() & FWL_WGTSTATE_Disabled) == 0) {
-      m_pHorzScrollBar->LockUpdate();
-      m_pHorzScrollBar->SetRange(0, -1);
-      m_pHorzScrollBar->SetStates(FWL_WGTSTATE_Disabled);
-      m_pHorzScrollBar->UnlockUpdate();
-      m_pHorzScrollBar->Update();
-      pRepaint = m_pHorzScrollBar.get();
-    }
-  }
-
-  if (bShowVert) {
-    CFX_RectF rtScroll = m_pVertScrollBar->GetWidgetRect();
-    if (rtScroll.height < rtFDE.height) {
-      m_pVertScrollBar->LockUpdate();
-      FX_FLOAT fStep = m_EdtEngine.GetEditParams()->fLineSpace;
-      FX_FLOAT fRange = std::max(rtFDE.height - m_rtEngine.height, fStep);
-
-      m_pVertScrollBar->SetRange(0.0f, fRange);
-      FX_FLOAT fPos = std::min(std::max(m_fScrollOffsetY, 0.0f), fRange);
-      m_pVertScrollBar->SetPos(fPos);
-      m_pVertScrollBar->SetTrackPos(fPos);
-      m_pVertScrollBar->SetPageSize(rtScroll.height);
-      m_pVertScrollBar->SetStepSize(fStep);
-      m_pVertScrollBar->RemoveStates(FWL_WGTSTATE_Disabled);
-      m_pVertScrollBar->UnlockUpdate();
-      m_pVertScrollBar->Update();
-      pRepaint = m_pVertScrollBar.get();
-    } else if ((m_pVertScrollBar->GetStates() & FWL_WGTSTATE_Disabled) == 0) {
-      m_pVertScrollBar->LockUpdate();
-      m_pVertScrollBar->SetRange(0, -1);
-      m_pVertScrollBar->SetStates(FWL_WGTSTATE_Disabled);
-      m_pVertScrollBar->UnlockUpdate();
-      m_pVertScrollBar->Update();
-      pRepaint = m_pVertScrollBar.get();
-    }
-  }
-  return pRepaint;
-}
-
-bool CFWL_Edit::IsShowScrollBar(bool bVert) {
-  bool bShow =
-      (m_pProperties->m_dwStyleExes & FWL_STYLEEXT_EDT_ShowScrollbarFocus)
-          ? (m_pProperties->m_dwStates & FWL_WGTSTATE_Focused) ==
-                FWL_WGTSTATE_Focused
-          : true;
-  if (bVert) {
-    return bShow && (m_pProperties->m_dwStyles & FWL_WGTSTYLE_VScroll) &&
-           (m_pProperties->m_dwStyleExes & FWL_STYLEEXT_EDT_MultiLine) &&
-           IsContentHeightOverflow();
-  }
-  return bShow && (m_pProperties->m_dwStyles & FWL_WGTSTYLE_HScroll) &&
-         (m_pProperties->m_dwStyleExes & FWL_STYLEEXT_EDT_MultiLine);
-}
-
-bool CFWL_Edit::IsContentHeightOverflow() {
-  IFDE_TxtEdtPage* pPage = m_EdtEngine.GetPage(0);
-  if (!pPage)
-    return false;
-  return pPage->GetContentsBox().height > m_rtEngine.height + 1.0f;
-}
-
-int32_t CFWL_Edit::AddDoRecord(std::unique_ptr<IFDE_TxtEdtDoRecord> pRecord) {
-  int32_t nCount = pdfium::CollectionSize<int32_t>(m_DoRecords);
-  if (m_iCurRecord == nCount - 1) {
-    if (nCount == m_iMaxRecord) {
-      m_DoRecords.pop_front();
-      m_iCurRecord--;
-    }
-  } else {
-    m_DoRecords.erase(m_DoRecords.begin() + m_iCurRecord + 1,
-                      m_DoRecords.end());
-  }
-
-  m_DoRecords.push_back(std::move(pRecord));
-  m_iCurRecord = pdfium::CollectionSize<int32_t>(m_DoRecords) - 1;
-  return m_iCurRecord;
-}
-
-void CFWL_Edit::Layout() {
-  GetClientRect(m_rtClient);
-  m_rtEngine = m_rtClient;
-  FX_FLOAT* pfWidth = static_cast<FX_FLOAT*>(
-      GetThemeCapacity(CFWL_WidgetCapacity::ScrollBarWidth));
-  if (!pfWidth)
-    return;
-
-  FX_FLOAT fWidth = *pfWidth;
-  if (!m_pOuter) {
-    CFX_RectF* pUIMargin = static_cast<CFX_RectF*>(
-        GetThemeCapacity(CFWL_WidgetCapacity::UIMargin));
-    if (pUIMargin) {
-      m_rtEngine.Deflate(pUIMargin->left, pUIMargin->top, pUIMargin->width,
-                         pUIMargin->height);
-    }
-  } else if (m_pOuter->GetClassID() == FWL_Type::DateTimePicker) {
-    CFWL_ThemePart part;
-    part.m_pWidget = m_pOuter;
-    CFX_RectF* pUIMargin =
-        static_cast<CFX_RectF*>(m_pOuter->GetThemeProvider()->GetCapacity(
-            &part, CFWL_WidgetCapacity::UIMargin));
-    if (pUIMargin) {
-      m_rtEngine.Deflate(pUIMargin->left, pUIMargin->top, pUIMargin->width,
-                         pUIMargin->height);
-    }
-  }
-
-  bool bShowVertScrollbar = IsShowScrollBar(true);
-  bool bShowHorzScrollbar = IsShowScrollBar(false);
-  if (bShowVertScrollbar) {
-    InitVerticalScrollBar();
-
-    CFX_RectF rtVertScr;
-    if (m_pProperties->m_dwStyleExes & FWL_STYLEEXT_EDT_OuterScrollbar) {
-      rtVertScr.Set(m_rtClient.right() + kEditMargin, m_rtClient.top, fWidth,
-                    m_rtClient.height);
-    } else {
-      rtVertScr.Set(m_rtClient.right() - fWidth, m_rtClient.top, fWidth,
-                    m_rtClient.height);
-      if (bShowHorzScrollbar)
-        rtVertScr.height -= fWidth;
-      m_rtEngine.width -= fWidth;
-    }
-
-    m_pVertScrollBar->SetWidgetRect(rtVertScr);
-    m_pVertScrollBar->RemoveStates(FWL_WGTSTATE_Invisible);
-    m_pVertScrollBar->Update();
-  } else if (m_pVertScrollBar) {
-    m_pVertScrollBar->SetStates(FWL_WGTSTATE_Invisible);
-  }
-
-  if (bShowHorzScrollbar) {
-    InitHorizontalScrollBar();
-
-    CFX_RectF rtHoriScr;
-    if (m_pProperties->m_dwStyleExes & FWL_STYLEEXT_EDT_OuterScrollbar) {
-      rtHoriScr.Set(m_rtClient.left, m_rtClient.bottom() + kEditMargin,
-                    m_rtClient.width, fWidth);
-    } else {
-      rtHoriScr.Set(m_rtClient.left, m_rtClient.bottom() - fWidth,
-                    m_rtClient.width, fWidth);
-      if (bShowVertScrollbar)
-        rtHoriScr.width -= fWidth;
-      m_rtEngine.height -= fWidth;
-    }
-    m_pHorzScrollBar->SetWidgetRect(rtHoriScr);
-    m_pHorzScrollBar->RemoveStates(FWL_WGTSTATE_Invisible);
-    m_pHorzScrollBar->Update();
-  } else if (m_pHorzScrollBar) {
-    m_pHorzScrollBar->SetStates(FWL_WGTSTATE_Invisible);
-  }
-}
-
-void CFWL_Edit::LayoutScrollBar() {
-  if ((m_pProperties->m_dwStyleExes & FWL_STYLEEXT_EDT_ShowScrollbarFocus) ==
-      0) {
-    return;
-  }
-
-  FX_FLOAT* pfWidth = nullptr;
-  bool bShowVertScrollbar = IsShowScrollBar(true);
-  bool bShowHorzScrollbar = IsShowScrollBar(false);
-  if (bShowVertScrollbar) {
-    if (!m_pVertScrollBar) {
-      pfWidth = static_cast<FX_FLOAT*>(
-          GetThemeCapacity(CFWL_WidgetCapacity::ScrollBarWidth));
-      FX_FLOAT fWidth = pfWidth ? *pfWidth : 0;
-      InitVerticalScrollBar();
-      CFX_RectF rtVertScr;
-      if (m_pProperties->m_dwStyleExes & FWL_STYLEEXT_EDT_OuterScrollbar) {
-        rtVertScr.Set(m_rtClient.right() + kEditMargin, m_rtClient.top, fWidth,
-                      m_rtClient.height);
-      } else {
-        rtVertScr.Set(m_rtClient.right() - fWidth, m_rtClient.top, fWidth,
-                      m_rtClient.height);
-        if (bShowHorzScrollbar)
-          rtVertScr.height -= fWidth;
-      }
-      m_pVertScrollBar->SetWidgetRect(rtVertScr);
-      m_pVertScrollBar->Update();
-    }
-    m_pVertScrollBar->RemoveStates(FWL_WGTSTATE_Invisible);
-  } else if (m_pVertScrollBar) {
-    m_pVertScrollBar->SetStates(FWL_WGTSTATE_Invisible);
-  }
-
-  if (bShowHorzScrollbar) {
-    if (!m_pHorzScrollBar) {
-      if (!pfWidth) {
-        pfWidth = static_cast<FX_FLOAT*>(
-            GetThemeCapacity(CFWL_WidgetCapacity::ScrollBarWidth));
-      }
-
-      FX_FLOAT fWidth = pfWidth ? *pfWidth : 0;
-      InitHorizontalScrollBar();
-      CFX_RectF rtHoriScr;
-      if (m_pProperties->m_dwStyleExes & FWL_STYLEEXT_EDT_OuterScrollbar) {
-        rtHoriScr.Set(m_rtClient.left, m_rtClient.bottom() + kEditMargin,
-                      m_rtClient.width, fWidth);
-      } else {
-        rtHoriScr.Set(m_rtClient.left, m_rtClient.bottom() - fWidth,
-                      m_rtClient.width, fWidth);
-        if (bShowVertScrollbar)
-          rtHoriScr.width -= (fWidth);
-      }
-      m_pHorzScrollBar->SetWidgetRect(rtHoriScr);
-      m_pHorzScrollBar->Update();
-    }
-    m_pHorzScrollBar->RemoveStates(FWL_WGTSTATE_Invisible);
-  } else if (m_pHorzScrollBar) {
-    m_pHorzScrollBar->SetStates(FWL_WGTSTATE_Invisible);
-  }
-  if (bShowVertScrollbar || bShowHorzScrollbar)
-    UpdateScroll();
-}
-
-void CFWL_Edit::DeviceToEngine(CFX_PointF& pt) {
-  pt.x += m_fScrollOffsetX - m_rtEngine.left;
-  pt.y += m_fScrollOffsetY - m_rtEngine.top - m_fVAlignOffset;
-}
-
-void CFWL_Edit::InitVerticalScrollBar() {
-  if (m_pVertScrollBar)
-    return;
-
-  auto prop = pdfium::MakeUnique<CFWL_WidgetProperties>();
-  prop->m_dwStyleExes = FWL_STYLEEXT_SCB_Vert;
-  prop->m_dwStates = FWL_WGTSTATE_Disabled | FWL_WGTSTATE_Invisible;
-  prop->m_pParent = this;
-  prop->m_pThemeProvider = m_pProperties->m_pThemeProvider;
-  m_pVertScrollBar =
-      pdfium::MakeUnique<CFWL_ScrollBar>(m_pOwnerApp, std::move(prop), this);
-}
-
-void CFWL_Edit::InitHorizontalScrollBar() {
-  if (m_pHorzScrollBar)
-    return;
-
-  auto prop = pdfium::MakeUnique<CFWL_WidgetProperties>();
-  prop->m_dwStyleExes = FWL_STYLEEXT_SCB_Horz;
-  prop->m_dwStates = FWL_WGTSTATE_Disabled | FWL_WGTSTATE_Invisible;
-  prop->m_pParent = this;
-  prop->m_pThemeProvider = m_pProperties->m_pThemeProvider;
-  m_pHorzScrollBar =
-      pdfium::MakeUnique<CFWL_ScrollBar>(m_pOwnerApp, std::move(prop), this);
-}
-
-void CFWL_Edit::ShowCaret(CFX_RectF* pRect) {
-  if (m_pCaret) {
-    m_pCaret->ShowCaret();
-    if (!pRect->IsEmpty())
-      m_pCaret->SetWidgetRect(*pRect);
-    Repaint(&m_rtEngine);
-    return;
-  }
-
-  CFWL_Widget* pOuter = this;
-  pRect->Offset(m_pProperties->m_rtWidget.left, m_pProperties->m_rtWidget.top);
-  while (pOuter->GetOuter()) {
-    pOuter = pOuter->GetOuter();
-
-    CFX_RectF rtOuter = pOuter->GetWidgetRect();
-    pRect->Offset(rtOuter.left, rtOuter.top);
-  }
-
-  CXFA_FFWidget* pXFAWidget =
-      static_cast<CXFA_FFWidget*>(pOuter->GetLayoutItem());
-  if (!pXFAWidget)
-    return;
-
-  IXFA_DocEnvironment* pDocEnvironment =
-      pXFAWidget->GetDoc()->GetDocEnvironment();
-  if (!pDocEnvironment)
-    return;
-
-  CFX_Matrix mt;
-  pXFAWidget->GetRotateMatrix(mt);
-
-  CFX_RectF rt(*pRect);
-  mt.TransformRect(rt);
-  pDocEnvironment->DisplayCaret(pXFAWidget, true, &rt);
-}
-
-void CFWL_Edit::HideCaret(CFX_RectF* pRect) {
-  if (m_pCaret) {
-    m_pCaret->HideCaret();
-    Repaint(&m_rtEngine);
-    return;
-  }
-
-  CFWL_Widget* pOuter = this;
-  while (pOuter->GetOuter())
-    pOuter = pOuter->GetOuter();
-
-  CXFA_FFWidget* pXFAWidget =
-      static_cast<CXFA_FFWidget*>(pOuter->GetLayoutItem());
-  if (!pXFAWidget)
-    return;
-
-  IXFA_DocEnvironment* pDocEnvironment =
-      pXFAWidget->GetDoc()->GetDocEnvironment();
-  if (!pDocEnvironment)
-    return;
-
-  pDocEnvironment->DisplayCaret(pXFAWidget, false, pRect);
-}
-
-bool CFWL_Edit::ValidateNumberChar(FX_WCHAR cNum) {
-  if (!m_bSetRange)
-    return true;
-
-  CFX_WideString wsText = m_EdtEngine.GetText(0, -1);
-  if (wsText.IsEmpty()) {
-    if (cNum == L'0')
-      return false;
-    return true;
-  }
-
-  int32_t caretPos = m_EdtEngine.GetCaretPos();
-  if (CountSelRanges() == 0) {
-    if (cNum == L'0' && caretPos == 0)
-      return false;
-
-    int32_t nLen = wsText.GetLength();
-    CFX_WideString l = wsText.Mid(0, caretPos);
-    CFX_WideString r = wsText.Mid(caretPos, nLen - caretPos);
-    CFX_WideString wsNew = l + cNum + r;
-    if (wsNew.GetInteger() <= m_iMax)
-      return true;
-    return false;
-  }
-
-  if (wsText.GetInteger() <= m_iMax)
-    return true;
-  return false;
-}
-
-void CFWL_Edit::InitCaret() {
-  if (!m_pCaret) {
-    if ((m_pProperties->m_dwStyleExes & FWL_STYLEEXT_EDT_InnerCaret)) {
-      m_pCaret = pdfium::MakeUnique<CFWL_Caret>(
-          m_pOwnerApp, pdfium::MakeUnique<CFWL_WidgetProperties>(), this);
-      m_pCaret->SetParent(this);
-      m_pCaret->SetStates(m_pProperties->m_dwStates);
-    }
-  } else if ((m_pProperties->m_dwStyleExes & FWL_STYLEEXT_EDT_InnerCaret) ==
-             0) {
-    m_pCaret.reset();
-  }
-}
-
-void CFWL_Edit::ClearRecord() {
-  m_iCurRecord = -1;
-  m_DoRecords.clear();
-}
-
-void CFWL_Edit::ProcessInsertError(int32_t iError) {
-  if (iError != -2)
-    return;
-
-  CFWL_Event textFullEvent(CFWL_Event::Type::TextFull, this);
-  DispatchEvent(&textFullEvent);
-}
-
-void CFWL_Edit::OnProcessMessage(CFWL_Message* pMessage) {
-  if (!pMessage)
-    return;
-
-  switch (pMessage->GetType()) {
-    case CFWL_Message::Type::SetFocus:
-      OnFocusChanged(pMessage, true);
-      break;
-    case CFWL_Message::Type::KillFocus:
-      OnFocusChanged(pMessage, false);
-      break;
-    case CFWL_Message::Type::Mouse: {
-      CFWL_MsgMouse* pMsg = static_cast<CFWL_MsgMouse*>(pMessage);
-      switch (pMsg->m_dwCmd) {
-        case FWL_MouseCommand::LeftButtonDown:
-          OnLButtonDown(pMsg);
-          break;
-        case FWL_MouseCommand::LeftButtonUp:
-          OnLButtonUp(pMsg);
-          break;
-        case FWL_MouseCommand::LeftButtonDblClk:
-          OnButtonDblClk(pMsg);
-          break;
-        case FWL_MouseCommand::Move:
-          OnMouseMove(pMsg);
-          break;
-        case FWL_MouseCommand::RightButtonDown:
-          DoButtonDown(pMsg);
-          break;
-        default:
-          break;
-      }
-      break;
-    }
-    case CFWL_Message::Type::Key: {
-      CFWL_MsgKey* pKey = static_cast<CFWL_MsgKey*>(pMessage);
-      if (pKey->m_dwCmd == FWL_KeyCommand::KeyDown)
-        OnKeyDown(pKey);
-      else if (pKey->m_dwCmd == FWL_KeyCommand::Char)
-        OnChar(pKey);
-      break;
-    }
-    default:
-      break;
-  }
-  CFWL_Widget::OnProcessMessage(pMessage);
-}
-
-void CFWL_Edit::OnProcessEvent(CFWL_Event* pEvent) {
-  if (!pEvent)
-    return;
-  if (pEvent->GetType() != CFWL_Event::Type::Scroll)
-    return;
-
-  CFWL_Widget* pSrcTarget = pEvent->m_pSrcTarget;
-  if ((pSrcTarget == m_pVertScrollBar.get() && m_pVertScrollBar) ||
-      (pSrcTarget == m_pHorzScrollBar.get() && m_pHorzScrollBar)) {
-    CFWL_EvtScroll* pScrollEvent = static_cast<CFWL_EvtScroll*>(pEvent);
-    OnScroll(static_cast<CFWL_ScrollBar*>(pSrcTarget),
-             pScrollEvent->m_iScrollCode, pScrollEvent->m_fPos);
-  }
-}
-
-void CFWL_Edit::OnDrawWidget(CFX_Graphics* pGraphics,
-                             const CFX_Matrix* pMatrix) {
-  DrawWidget(pGraphics, pMatrix);
-}
-
-void CFWL_Edit::DoButtonDown(CFWL_MsgMouse* pMsg) {
-  if ((m_pProperties->m_dwStates & FWL_WGTSTATE_Focused) == 0)
-    SetFocus(true);
-
-  IFDE_TxtEdtPage* pPage = m_EdtEngine.GetPage(0);
-  if (!pPage)
-    return;
-
-  CFX_PointF pt(pMsg->m_fx, pMsg->m_fy);
-  DeviceToEngine(pt);
-  bool bBefore = true;
-  int32_t nIndex = pPage->GetCharIndex(pt, bBefore);
-  if (nIndex < 0)
-    nIndex = 0;
-
-  m_EdtEngine.SetCaretPos(nIndex, bBefore);
-}
-
-void CFWL_Edit::OnFocusChanged(CFWL_Message* pMsg, bool bSet) {
-  uint32_t dwStyleEx = GetStylesEx();
-  bool bRepaint = !!(dwStyleEx & FWL_STYLEEXT_EDT_InnerCaret);
-  if (bSet) {
-    m_pProperties->m_dwStates |= FWL_WGTSTATE_Focused;
-
-    UpdateVAlignment();
-    UpdateOffset();
-    UpdateCaret();
-  } else if (m_pProperties->m_dwStates & FWL_WGTSTATE_Focused) {
-    m_pProperties->m_dwStates &= ~FWL_WGTSTATE_Focused;
-    HideCaret(nullptr);
-    if ((dwStyleEx & FWL_STYLEEXT_EDT_NoHideSel) == 0) {
-      int32_t nSel = CountSelRanges();
-      if (nSel > 0) {
-        ClearSelections();
-        bRepaint = true;
-      }
-      m_EdtEngine.SetCaretPos(0, true);
-      UpdateOffset();
-    }
-    ClearRecord();
-  }
-
-  LayoutScrollBar();
-  if (!bRepaint)
-    return;
-
-  CFX_RectF rtInvalidate;
-  rtInvalidate.Set(0, 0, m_pProperties->m_rtWidget.width,
-                   m_pProperties->m_rtWidget.height);
-  Repaint(&rtInvalidate);
-}
-
-void CFWL_Edit::OnLButtonDown(CFWL_MsgMouse* pMsg) {
-  if (m_pProperties->m_dwStates & FWL_WGTSTATE_Disabled)
-    return;
-
-  m_bLButtonDown = true;
-  SetGrab(true);
-  DoButtonDown(pMsg);
-  int32_t nIndex = m_EdtEngine.GetCaretPos();
-  bool bRepaint = false;
-  if (m_EdtEngine.CountSelRanges() > 0) {
-    m_EdtEngine.ClearSelection();
-    bRepaint = true;
-  }
-
-  if ((pMsg->m_dwFlags & FWL_KEYFLAG_Shift) && m_nSelStart != nIndex) {
-    int32_t iStart = std::min(m_nSelStart, nIndex);
-    int32_t iEnd = std::max(m_nSelStart, nIndex);
-    m_EdtEngine.AddSelRange(iStart, iEnd - iStart);
-    bRepaint = true;
-  } else {
-    m_nSelStart = nIndex;
-  }
-  if (bRepaint)
-    Repaint(&m_rtEngine);
-}
-
-void CFWL_Edit::OnLButtonUp(CFWL_MsgMouse* pMsg) {
-  m_bLButtonDown = false;
-  SetGrab(false);
-}
-
-void CFWL_Edit::OnButtonDblClk(CFWL_MsgMouse* pMsg) {
-  IFDE_TxtEdtPage* pPage = m_EdtEngine.GetPage(0);
-  if (!pPage)
-    return;
-
-  CFX_PointF pt(pMsg->m_fx, pMsg->m_fy);
-  DeviceToEngine(pt);
-  int32_t nCount = 0;
-  int32_t nIndex = pPage->SelectWord(pt, nCount);
-  if (nIndex < 0)
-    return;
-
-  m_EdtEngine.AddSelRange(nIndex, nCount);
-  m_EdtEngine.SetCaretPos(nIndex + nCount - 1, false);
-  Repaint(&m_rtEngine);
-}
-
-void CFWL_Edit::OnMouseMove(CFWL_MsgMouse* pMsg) {
-  if (m_nSelStart == -1 || !m_bLButtonDown)
-    return;
-
-  IFDE_TxtEdtPage* pPage = m_EdtEngine.GetPage(0);
-  if (!pPage)
-    return;
-
-  CFX_PointF pt(pMsg->m_fx, pMsg->m_fy);
-  DeviceToEngine(pt);
-  bool bBefore = true;
-  int32_t nIndex = pPage->GetCharIndex(pt, bBefore);
-  m_EdtEngine.SetCaretPos(nIndex, bBefore);
-  nIndex = m_EdtEngine.GetCaretPos();
-  m_EdtEngine.ClearSelection();
-
-  if (nIndex == m_nSelStart)
-    return;
-
-  int32_t nLen = m_EdtEngine.GetTextLength();
-  if (m_nSelStart >= nLen)
-    m_nSelStart = nLen;
-
-  m_EdtEngine.AddSelRange(std::min(m_nSelStart, nIndex),
-                          FXSYS_abs(nIndex - m_nSelStart));
-}
-
-void CFWL_Edit::OnKeyDown(CFWL_MsgKey* pMsg) {
-  FDE_TXTEDTMOVECARET MoveCaret = MC_MoveNone;
-  bool bShift = !!(pMsg->m_dwFlags & FWL_KEYFLAG_Shift);
-  bool bCtrl = !!(pMsg->m_dwFlags & FWL_KEYFLAG_Ctrl);
-  uint32_t dwKeyCode = pMsg->m_dwKeyCode;
-  switch (dwKeyCode) {
-    case FWL_VKEY_Left: {
-      MoveCaret = MC_Left;
-      break;
-    }
-    case FWL_VKEY_Right: {
-      MoveCaret = MC_Right;
-      break;
-    }
-    case FWL_VKEY_Up: {
-      MoveCaret = MC_Up;
-      break;
-    }
-    case FWL_VKEY_Down: {
-      MoveCaret = MC_Down;
-      break;
-    }
-    case FWL_VKEY_Home: {
-      MoveCaret = bCtrl ? MC_Home : MC_LineStart;
-      break;
-    }
-    case FWL_VKEY_End: {
-      MoveCaret = bCtrl ? MC_End : MC_LineEnd;
-      break;
-    }
-    case FWL_VKEY_Insert:
-      break;
-    case FWL_VKEY_Delete: {
-      if ((m_pProperties->m_dwStyleExes & FWL_STYLEEXT_EDT_ReadOnly) ||
-          (m_pProperties->m_dwStates & FWL_WGTSTATE_Disabled)) {
-        break;
-      }
-      int32_t nCaret = m_EdtEngine.GetCaretPos();
-#if (_FX_OS_ == _FX_MACOSX_)
-      m_EdtEngine.Delete(nCaret, true);
-#else
-      m_EdtEngine.Delete(nCaret);
-#endif
-      break;
-    }
-    case FWL_VKEY_F2:
-    case FWL_VKEY_Tab:
-    default:
-      break;
-  }
-  if (MoveCaret != MC_MoveNone)
-    m_EdtEngine.MoveCaretPos(MoveCaret, bShift, bCtrl);
-}
-
-void CFWL_Edit::OnChar(CFWL_MsgKey* pMsg) {
-  if ((m_pProperties->m_dwStyleExes & FWL_STYLEEXT_EDT_ReadOnly) ||
-      (m_pProperties->m_dwStates & FWL_WGTSTATE_Disabled)) {
-    return;
-  }
-
-  int32_t iError = 0;
-  FX_WCHAR c = static_cast<FX_WCHAR>(pMsg->m_dwKeyCode);
-  int32_t nCaret = m_EdtEngine.GetCaretPos();
-  switch (c) {
-    case FWL_VKEY_Back:
-      m_EdtEngine.Delete(nCaret, true);
-      break;
-    case FWL_VKEY_NewLine:
-    case FWL_VKEY_Escape:
-      break;
-    case FWL_VKEY_Tab: {
-      iError = m_EdtEngine.Insert(nCaret, L"\t", 1);
-      break;
-    }
-    case FWL_VKEY_Return: {
-      if (m_pProperties->m_dwStyleExes & FWL_STYLEEXT_EDT_WantReturn) {
-        iError = m_EdtEngine.Insert(nCaret, L"\n", 1);
-      }
-      break;
-    }
-    default: {
-      if (!m_pWidgetMgr->IsFormDisabled()) {
-        if (m_pProperties->m_dwStyleExes & FWL_STYLEEXT_EDT_Number) {
-          if (((pMsg->m_dwKeyCode < FWL_VKEY_0) &&
-               (pMsg->m_dwKeyCode != 0x2E && pMsg->m_dwKeyCode != 0x2D)) ||
-              pMsg->m_dwKeyCode > FWL_VKEY_9) {
-            break;
-          }
-          if (!ValidateNumberChar(c))
-            break;
-        }
-      }
-#if (_FX_OS_ == _FX_MACOSX_)
-      if (pMsg->m_dwFlags & FWL_KEYFLAG_Command)
-#else
-      if (pMsg->m_dwFlags & FWL_KEYFLAG_Ctrl)
-#endif
-      {
-        break;
-      }
-      iError = m_EdtEngine.Insert(nCaret, &c, 1);
-      break;
-    }
-  }
-  if (iError < 0)
-    ProcessInsertError(iError);
-}
-
-bool CFWL_Edit::OnScroll(CFWL_ScrollBar* pScrollBar,
-                         CFWL_EvtScroll::Code dwCode,
-                         FX_FLOAT fPos) {
-  CFX_SizeF fs;
-  pScrollBar->GetRange(&fs.x, &fs.y);
-  FX_FLOAT iCurPos = pScrollBar->GetPos();
-  FX_FLOAT fStep = pScrollBar->GetStepSize();
-  switch (dwCode) {
-    case CFWL_EvtScroll::Code::Min: {
-      fPos = fs.x;
-      break;
-    }
-    case CFWL_EvtScroll::Code::Max: {
-      fPos = fs.y;
-      break;
-    }
-    case CFWL_EvtScroll::Code::StepBackward: {
-      fPos -= fStep;
-      if (fPos < fs.x + fStep / 2) {
-        fPos = fs.x;
-      }
-      break;
-    }
-    case CFWL_EvtScroll::Code::StepForward: {
-      fPos += fStep;
-      if (fPos > fs.y - fStep / 2) {
-        fPos = fs.y;
-      }
-      break;
-    }
-    case CFWL_EvtScroll::Code::PageBackward: {
-      fPos -= pScrollBar->GetPageSize();
-      if (fPos < fs.x) {
-        fPos = fs.x;
-      }
-      break;
-    }
-    case CFWL_EvtScroll::Code::PageForward: {
-      fPos += pScrollBar->GetPageSize();
-      if (fPos > fs.y) {
-        fPos = fs.y;
-      }
-      break;
-    }
-    case CFWL_EvtScroll::Code::Pos:
-    case CFWL_EvtScroll::Code::TrackPos:
-    case CFWL_EvtScroll::Code::None:
-      break;
-    case CFWL_EvtScroll::Code::EndScroll:
-      return false;
-  }
-  if (iCurPos == fPos)
-    return true;
-
-  pScrollBar->SetPos(fPos);
-  pScrollBar->SetTrackPos(fPos);
-  UpdateOffset(pScrollBar, fPos - iCurPos);
-  UpdateCaret();
-
-  CFX_RectF rect = GetWidgetRect();
-  CFX_RectF rtInvalidate;
-  rtInvalidate.Set(0, 0, rect.width + 2, rect.height + 2);
-  Repaint(&rtInvalidate);
-  return true;
-}