Merge the CFWL_*Imp classes into the IFWL_* classes.

xfa/fwl/core/ifwl_edit.cpp

Index: xfa/fwl/core/ifwl_edit.cpp
diff --git a/xfa/fwl/basewidget/fwl_editimp.cpp b/xfa/fwl/core/ifwl_edit.cpp
similarity index 84%
rename from xfa/fwl/basewidget/fwl_editimp.cpp
rename to xfa/fwl/core/ifwl_edit.cpp
index 0f939f1145378a1cd1a107d887e2ab209dfe41e5..83c00627c3b741ae6a4c63c276440ada8ab69b2c 100644
--- a/xfa/fwl/basewidget/fwl_editimp.cpp
+++ b/xfa/fwl/core/ifwl_edit.cpp
@@ -4,7 +4,7 @@
 
 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
 
-#include "xfa/fwl/basewidget/fwl_editimp.h"
+#include "xfa/fwl/core/ifwl_edit.h"
 
 #include <algorithm>
 #include <memory>
@@ -16,16 +16,12 @@
 #include "xfa/fde/fde_render.h"
 #include "xfa/fde/ifde_txtedtpage.h"
 #include "xfa/fgas/font/fgas_gefont.h"
-#include "xfa/fwl/basewidget/fwl_caretimp.h"
-#include "xfa/fwl/basewidget/fwl_comboboximp.h"
-#include "xfa/fwl/basewidget/fwl_scrollbarimp.h"
-#include "xfa/fwl/basewidget/ifwl_caret.h"
 #include "xfa/fwl/core/cfwl_message.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/fwl_widgetimp.h"
 #include "xfa/fwl/core/ifwl_app.h"
+#include "xfa/fwl/core/ifwl_caret.h"
 #include "xfa/fwl/core/ifwl_themeprovider.h"
 #include "xfa/fxfa/xfa_ffdoc.h"
 #include "xfa/fxfa/xfa_ffwidget.h"
@@ -58,147 +54,12 @@ void AddSquigglyPath(CFX_Path* pPathData,
 // static
 IFWL_Edit* IFWL_Edit::Create(const CFWL_WidgetImpProperties& properties,
                              IFWL_Widget* pOuter) {
-  IFWL_Edit* pEdit = new IFWL_Edit;
-  CFWL_EditImp* pEditImpl = new CFWL_EditImp(properties, pOuter);
-  pEdit->SetImpl(pEditImpl);
-  pEditImpl->SetInterface(pEdit);
-  return pEdit;
-}
-// static
-IFWL_Edit* IFWL_Edit::CreateComboEdit(
-    const CFWL_WidgetImpProperties& properties,
-    IFWL_Widget* pOuter) {
-  IFWL_Edit* pEdit = new IFWL_Edit;
-  CFWL_EditImp* pComboEditImpl = new CFWL_ComboEditImp(properties, pOuter);
-  pEdit->SetImpl(pComboEditImpl);
-  pComboEditImpl->SetInterface(pEdit);
-  return pEdit;
-}
-IFWL_Edit::IFWL_Edit() {}
-FWL_Error IFWL_Edit::SetText(const CFX_WideString& wsText) {
-  return static_cast<CFWL_EditImp*>(GetImpl())->SetText(wsText);
-}
-int32_t IFWL_Edit::GetTextLength() const {
-  return static_cast<CFWL_EditImp*>(GetImpl())->GetTextLength();
-}
-FWL_Error IFWL_Edit::GetText(CFX_WideString& wsText,
-                             int32_t nStart,
-                             int32_t nCount) const {
-  return static_cast<CFWL_EditImp*>(GetImpl())->GetText(wsText, nStart, nCount);
-}
-FWL_Error IFWL_Edit::ClearText() {
-  return static_cast<CFWL_EditImp*>(GetImpl())->ClearText();
-}
-int32_t IFWL_Edit::GetCaretPos() const {
-  return static_cast<CFWL_EditImp*>(GetImpl())->GetCaretPos();
-}
-int32_t IFWL_Edit::SetCaretPos(int32_t nIndex, FX_BOOL bBefore) {
-  return static_cast<CFWL_EditImp*>(GetImpl())->SetCaretPos(nIndex, bBefore);
-}
-FWL_Error IFWL_Edit::AddSelRange(int32_t nStart, int32_t nCount) {
-  return static_cast<CFWL_EditImp*>(GetImpl())->AddSelRange(nStart, nCount);
-}
-int32_t IFWL_Edit::CountSelRanges() {
-  return static_cast<CFWL_EditImp*>(GetImpl())->CountSelRanges();
-}
-int32_t IFWL_Edit::GetSelRange(int32_t nIndex, int32_t& nStart) {
-  return static_cast<CFWL_EditImp*>(GetImpl())->GetSelRange(nIndex, nStart);
-}
-FWL_Error IFWL_Edit::ClearSelections() {
-  return static_cast<CFWL_EditImp*>(GetImpl())->ClearSelections();
-}
-int32_t IFWL_Edit::GetLimit() {
-  return static_cast<CFWL_EditImp*>(GetImpl())->GetLimit();
-}
-FWL_Error IFWL_Edit::SetLimit(int32_t nLimit) {
-  return static_cast<CFWL_EditImp*>(GetImpl())->SetLimit(nLimit);
-}
-FWL_Error IFWL_Edit::SetAliasChar(FX_WCHAR wAlias) {
-  return static_cast<CFWL_EditImp*>(GetImpl())->SetAliasChar(wAlias);
-}
-FWL_Error IFWL_Edit::Insert(int32_t nStart,
-                            const FX_WCHAR* lpText,
-                            int32_t nLen) {
-  return static_cast<CFWL_EditImp*>(GetImpl())->Insert(nStart, lpText, nLen);
-}
-FWL_Error IFWL_Edit::DeleteSelections() {
-  return static_cast<CFWL_EditImp*>(GetImpl())->DeleteSelections();
-}
-FWL_Error IFWL_Edit::DeleteRange(int32_t nStart, int32_t nCount) {
-  return static_cast<CFWL_EditImp*>(GetImpl())->DeleteRange(nStart, nCount);
-}
-FWL_Error IFWL_Edit::Replace(int32_t nStart,
-                             int32_t nLen,
-                             const CFX_WideStringC& wsReplace) {
-  return static_cast<CFWL_EditImp*>(GetImpl())
-      ->Replace(nStart, nLen, wsReplace);
-}
-FWL_Error IFWL_Edit::DoClipboard(int32_t iCmd) {
-  return static_cast<CFWL_EditImp*>(GetImpl())->DoClipboard(iCmd);
-}
-FX_BOOL IFWL_Edit::Copy(CFX_WideString& wsCopy) {
-  return static_cast<CFWL_EditImp*>(GetImpl())->Copy(wsCopy);
-}
-FX_BOOL IFWL_Edit::Cut(CFX_WideString& wsCut) {
-  return static_cast<CFWL_EditImp*>(GetImpl())->Cut(wsCut);
-}
-FX_BOOL IFWL_Edit::Paste(const CFX_WideString& wsPaste) {
-  return static_cast<CFWL_EditImp*>(GetImpl())->Paste(wsPaste);
-}
-FX_BOOL IFWL_Edit::Delete() {
-  return static_cast<CFWL_EditImp*>(GetImpl())->Delete();
-}
-FX_BOOL IFWL_Edit::Redo(const IFDE_TxtEdtDoRecord* pRecord) {
-  return static_cast<CFWL_EditImp*>(GetImpl())->Redo(pRecord);
-}
-FX_BOOL IFWL_Edit::Undo(const IFDE_TxtEdtDoRecord* pRecord) {
-  return static_cast<CFWL_EditImp*>(GetImpl())->Undo(pRecord);
-}
-FX_BOOL IFWL_Edit::Undo() {
-  return static_cast<CFWL_EditImp*>(GetImpl())->Undo();
-}
-FX_BOOL IFWL_Edit::Redo() {
-  return static_cast<CFWL_EditImp*>(GetImpl())->Redo();
-}
-FX_BOOL IFWL_Edit::CanUndo() {
-  return static_cast<CFWL_EditImp*>(GetImpl())->CanUndo();
-}
-FX_BOOL IFWL_Edit::CanRedo() {
-  return static_cast<CFWL_EditImp*>(GetImpl())->CanRedo();
-}
-FWL_Error IFWL_Edit::SetTabWidth(FX_FLOAT fTabWidth, FX_BOOL bEquidistant) {
-  return static_cast<CFWL_EditImp*>(GetImpl())
-      ->SetTabWidth(fTabWidth, bEquidistant);
-}
-FWL_Error IFWL_Edit::SetOuter(IFWL_Widget* pOuter) {
-  return static_cast<CFWL_EditImp*>(GetImpl())->SetOuter(pOuter);
-}
-FWL_Error IFWL_Edit::SetNumberRange(int32_t iMin, int32_t iMax) {
-  return static_cast<CFWL_EditImp*>(GetImpl())->SetNumberRange(iMin, iMax);
-}
-FWL_Error IFWL_Edit::SetBackColor(uint32_t dwColor) {
-  return static_cast<CFWL_EditImp*>(GetImpl())->SetBackgroundColor(dwColor);
-}
-FWL_Error IFWL_Edit::SetFont(const CFX_WideString& wsFont, FX_FLOAT fSize) {
-  return static_cast<CFWL_EditImp*>(GetImpl())->SetFont(wsFont, fSize);
-}
-void IFWL_Edit::SetScrollOffset(FX_FLOAT fScrollOffset) {
-  return static_cast<CFWL_EditImp*>(GetImpl())->SetScrollOffset(fScrollOffset);
-}
-FX_BOOL IFWL_Edit::GetSuggestWords(CFX_PointF pointf,
-                                   std::vector<CFX_ByteString>& sSuggest) {
-  return static_cast<CFWL_EditImp*>(GetImpl())
-      ->GetSuggestWords(pointf, sSuggest);
-}
-FX_BOOL IFWL_Edit::ReplaceSpellCheckWord(CFX_PointF pointf,
-                                         const CFX_ByteStringC& bsReplace) {
-  return static_cast<CFWL_EditImp*>(GetImpl())
-      ->ReplaceSpellCheckWord(pointf, bsReplace);
+  return new IFWL_Edit(properties, pOuter);
 }
 
-CFWL_EditImp::CFWL_EditImp(const CFWL_WidgetImpProperties& properties,
-                           IFWL_Widget* pOuter)
-    : CFWL_WidgetImp(properties, pOuter),
+IFWL_Edit::IFWL_Edit(const CFWL_WidgetImpProperties& properties,
+                     IFWL_Widget* pOuter)
+    : IFWL_Widget(properties, pOuter),
       m_fVAlignOffset(0.0f),
       m_fScrollOffsetX(0.0f),
       m_fScrollOffsetY(0.0f),
@@ -220,21 +81,21 @@ CFWL_EditImp::CFWL_EditImp(const CFWL_WidgetImpProperties& properties,
   m_rtStatic.Reset();
 }
 
-CFWL_EditImp::~CFWL_EditImp() {
+IFWL_Edit::~IFWL_Edit() {
   ClearRecord();
 }
 
-FWL_Error CFWL_EditImp::GetClassName(CFX_WideString& wsClass) const {
+FWL_Error IFWL_Edit::GetClassName(CFX_WideString& wsClass) const {
   wsClass = FWL_CLASS_Edit;
   return FWL_Error::Succeeded;
 }
 
-FWL_Type CFWL_EditImp::GetClassID() const {
+FWL_Type IFWL_Edit::GetClassID() const {
   return FWL_Type::Edit;
 }
 
-FWL_Error CFWL_EditImp::Initialize() {
-  if (CFWL_WidgetImp::Initialize() != FWL_Error::Succeeded)
+FWL_Error IFWL_Edit::Initialize() {
+  if (IFWL_Widget::Initialize() != FWL_Error::Succeeded)
     return FWL_Error::Indefinite;
   if (!m_pDelegate)
     m_pDelegate = new CFWL_EditImpDelegate(this);
@@ -246,7 +107,7 @@ FWL_Error CFWL_EditImp::Initialize() {
   return FWL_Error::Succeeded;
 }
 
-FWL_Error CFWL_EditImp::Finalize() {
+FWL_Error IFWL_Edit::Finalize() {
   if (m_pProperties->m_dwStates & FWL_WGTSTATE_Focused) {
     ShowCaret(FALSE);
   }
@@ -258,9 +119,9 @@ FWL_Error CFWL_EditImp::Finalize() {
   }
   delete m_pDelegate;
   m_pDelegate = nullptr;
-  return CFWL_WidgetImp::Finalize();
+  return IFWL_Widget::Finalize();
 }
-FWL_Error CFWL_EditImp::GetWidgetRect(CFX_RectF& rect, FX_BOOL bAutoSize) {
+FWL_Error IFWL_Edit::GetWidgetRect(CFX_RectF& rect, FX_BOOL bAutoSize) {
   if (bAutoSize) {
     rect.Set(0, 0, 0, 0);
     if (m_pEdtEngine) {
@@ -274,7 +135,7 @@ FWL_Error CFWL_EditImp::GetWidgetRect(CFX_RectF& rect, FX_BOOL bAutoSize) {
         rect.Set(0, 0, sz.x, sz.y);
       }
     }
-    CFWL_WidgetImp::GetWidgetRect(rect, TRUE);
+    IFWL_Widget::GetWidgetRect(rect, TRUE);
   } else {
     rect = m_pProperties->m_rtWidget;
     if (m_pProperties->m_dwStyleExes & FWL_STYLEEXT_EDT_OuterScrollbar) {
@@ -295,18 +156,18 @@ FWL_Error CFWL_EditImp::GetWidgetRect(CFX_RectF& rect, FX_BOOL bAutoSize) {
   return FWL_Error::Succeeded;
 }
 
-void CFWL_EditImp::SetStates(uint32_t dwStates, FX_BOOL bSet) {
+void IFWL_Edit::SetStates(uint32_t dwStates, FX_BOOL bSet) {
   if ((m_pProperties->m_dwStates & FWL_WGTSTATE_Invisible) ||
       (m_pProperties->m_dwStates & FWL_WGTSTATE_Disabled)) {
     ShowCaret(FALSE);
   }
-  CFWL_WidgetImp::SetStates(dwStates, bSet);
+  IFWL_Widget::SetStates(dwStates, bSet);
 }
 
-FWL_Error CFWL_EditImp::SetWidgetRect(const CFX_RectF& rect) {
-  return CFWL_WidgetImp::SetWidgetRect(rect);
+FWL_Error IFWL_Edit::SetWidgetRect(const CFX_RectF& rect) {
+  return IFWL_Widget::SetWidgetRect(rect);
 }
-FWL_Error CFWL_EditImp::Update() {
+FWL_Error IFWL_Edit::Update() {
   if (IsLocked()) {
     return FWL_Error::Indefinite;
   }
@@ -324,7 +185,7 @@ FWL_Error CFWL_EditImp::Update() {
   return FWL_Error::Succeeded;
 }
 
-FWL_WidgetHit CFWL_EditImp::HitTest(FX_FLOAT fx, FX_FLOAT fy) {
+FWL_WidgetHit IFWL_Edit::HitTest(FX_FLOAT fx, FX_FLOAT fy) {
   if (m_pProperties->m_dwStyleExes & FWL_STYLEEXT_EDT_OuterScrollbar) {
     if (IsShowScrollBar(TRUE)) {
       CFX_RectF rect;
@@ -344,11 +205,11 @@ FWL_WidgetHit CFWL_EditImp::HitTest(FX_FLOAT fx, FX_FLOAT fy) {
   return FWL_WidgetHit::Unknown;
 }
 
-void CFWL_EditImp::AddSpellCheckObj(CFX_Path& PathData,
-                                    int32_t nStart,
-                                    int32_t nCount,
-                                    FX_FLOAT fOffSetX,
-                                    FX_FLOAT fOffSetY) {
+void IFWL_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;
@@ -369,11 +230,11 @@ void CFWL_EditImp::AddSpellCheckObj(CFX_Path& PathData,
     AddSquigglyPath(&PathData, fStartX, fEndX, fY, fStep);
   }
 }
-int32_t CFWL_EditImp::GetWordAtPoint(CFX_PointF pointf, int32_t& nCount) {
+int32_t IFWL_Edit::GetWordAtPoint(CFX_PointF pointf, int32_t& nCount) {
   return 0;
 }
-FX_BOOL CFWL_EditImp::GetSuggestWords(CFX_PointF pointf,
-                                      std::vector<CFX_ByteString>& sSuggest) {
+FX_BOOL IFWL_Edit::GetSuggestWords(CFX_PointF pointf,
+                                   std::vector<CFX_ByteString>& sSuggest) {
   int32_t nWordCount = 0;
   int32_t nWordStart = GetWordAtPoint(pointf, nWordCount);
   if (nWordCount < 1) {
@@ -392,7 +253,7 @@ FX_BOOL CFWL_EditImp::GetSuggestWords(CFX_PointF pointf,
     return FALSE;
   }
   CFWL_EvtEdtCheckWord checkWordEvent;
-  checkWordEvent.m_pSrcTarget = m_pInterface;
+  checkWordEvent.m_pSrcTarget = this;
   checkWordEvent.bsWord = sLatinWord;
   checkWordEvent.bCheckWord = TRUE;
   DispatchEvent(&checkWordEvent);
@@ -400,15 +261,15 @@ FX_BOOL CFWL_EditImp::GetSuggestWords(CFX_PointF pointf,
     return FALSE;
   }
   CFWL_EvtEdtGetSuggestWords suggestWordsEvent;
-  suggestWordsEvent.m_pSrcTarget = m_pInterface;
+  suggestWordsEvent.m_pSrcTarget = this;
   suggestWordsEvent.bsWord = sLatinWord;
   suggestWordsEvent.bsArraySuggestWords = sSuggest;
   suggestWordsEvent.bSuggestWords = FALSE;
   DispatchEvent(&checkWordEvent);
   return suggestWordsEvent.bSuggestWords;
 }
-FX_BOOL CFWL_EditImp::ReplaceSpellCheckWord(CFX_PointF pointf,
-                                            const CFX_ByteStringC& bsReplace) {
+FX_BOOL IFWL_Edit::ReplaceSpellCheckWord(CFX_PointF pointf,
+                                         const CFX_ByteStringC& bsReplace) {
   int32_t nWordCount = 0;
   int32_t nWordStart = GetWordAtPoint(pointf, nWordCount);
   if (nWordCount < 1) {
@@ -432,8 +293,8 @@ FX_BOOL CFWL_EditImp::ReplaceSpellCheckWord(CFX_PointF pointf,
   Replace(nWordStart, nWordCount, wsDest.AsStringC());
   return TRUE;
 }
-void CFWL_EditImp::DrawSpellCheck(CFX_Graphics* pGraphics,
-                                  const CFX_Matrix* pMatrix) {
+void IFWL_Edit::DrawSpellCheck(CFX_Graphics* pGraphics,
+                               const CFX_Matrix* pMatrix) {
   pGraphics->SaveGraphState();
   if (pMatrix) {
     pGraphics->ConcatMatrix(const_cast<CFX_Matrix*>(pMatrix));
@@ -441,7 +302,7 @@ void CFWL_EditImp::DrawSpellCheck(CFX_Graphics* pGraphics,
   FX_ARGB cr = 0xFFFF0000;
   CFX_Color crLine(cr);
   CFWL_EvtEdtCheckWord checkWordEvent;
-  checkWordEvent.m_pSrcTarget = m_pInterface;
+  checkWordEvent.m_pSrcTarget = this;
   CFX_ByteString sLatinWord;
   CFX_Path pathSpell;
   pathSpell.Create();
@@ -490,8 +351,8 @@ void CFWL_EditImp::DrawSpellCheck(CFX_Graphics* pGraphics,
   }
   pGraphics->RestoreGraphState();
 }
-FWL_Error CFWL_EditImp::DrawWidget(CFX_Graphics* pGraphics,
-                                   const CFX_Matrix* pMatrix) {
+FWL_Error IFWL_Edit::DrawWidget(CFX_Graphics* pGraphics,
+                                const CFX_Matrix* pMatrix) {
   if (!pGraphics)
     return FWL_Error::Indefinite;
   if (!m_pProperties->m_pThemeProvider)
@@ -518,7 +379,7 @@ FWL_Error CFWL_EditImp::DrawWidget(CFX_Graphics* pGraphics,
   }
   return FWL_Error::Succeeded;
 }
-FWL_Error CFWL_EditImp::SetThemeProvider(IFWL_ThemeProvider* pThemeProvider) {
+FWL_Error IFWL_Edit::SetThemeProvider(IFWL_ThemeProvider* pThemeProvider) {
   if (!pThemeProvider)
     return FWL_Error::Indefinite;
   if (m_pHorzScrollBar) {
@@ -534,20 +395,20 @@ FWL_Error CFWL_EditImp::SetThemeProvider(IFWL_ThemeProvider* pThemeProvider) {
   return FWL_Error::Succeeded;
 }
 
-FWL_Error CFWL_EditImp::SetText(const CFX_WideString& wsText) {
+FWL_Error IFWL_Edit::SetText(const CFX_WideString& wsText) {
   m_pEdtEngine->SetText(wsText);
   return FWL_Error::Succeeded;
 }
 
-int32_t CFWL_EditImp::GetTextLength() const {
+int32_t IFWL_Edit::GetTextLength() const {
   if (!m_pEdtEngine)
     return -1;
   return m_pEdtEngine->GetTextLength();
 }
 
-FWL_Error CFWL_EditImp::GetText(CFX_WideString& wsText,
-                                int32_t nStart,
-                                int32_t nCount) const {
+FWL_Error IFWL_Edit::GetText(CFX_WideString& wsText,
+                             int32_t nStart,
+                             int32_t nCount) const {
   if (!m_pEdtEngine)
     return FWL_Error::Indefinite;
 
@@ -555,7 +416,7 @@ FWL_Error CFWL_EditImp::GetText(CFX_WideString& wsText,
   return FWL_Error::Succeeded;
 }
 
-FWL_Error CFWL_EditImp::ClearText() {
+FWL_Error IFWL_Edit::ClearText() {
   if (!m_pEdtEngine)
     return FWL_Error::Indefinite;
 
@@ -563,19 +424,19 @@ FWL_Error CFWL_EditImp::ClearText() {
   return FWL_Error::Succeeded;
 }
 
-int32_t CFWL_EditImp::GetCaretPos() const {
+int32_t IFWL_Edit::GetCaretPos() const {
   if (!m_pEdtEngine)
     return -1;
   return m_pEdtEngine->GetCaretPos();
 }
 
-int32_t CFWL_EditImp::SetCaretPos(int32_t nIndex, FX_BOOL bBefore) {
+int32_t IFWL_Edit::SetCaretPos(int32_t nIndex, FX_BOOL bBefore) {
   if (!m_pEdtEngine)
     return -1;
   return m_pEdtEngine->SetCaretPos(nIndex, bBefore);
 }
 
-FWL_Error CFWL_EditImp::AddSelRange(int32_t nStart, int32_t nCount) {
+FWL_Error IFWL_Edit::AddSelRange(int32_t nStart, int32_t nCount) {
   if (!m_pEdtEngine)
     return FWL_Error::Indefinite;
 
@@ -583,19 +444,19 @@ FWL_Error CFWL_EditImp::AddSelRange(int32_t nStart, int32_t nCount) {
   return FWL_Error::Succeeded;
 }
 
-int32_t CFWL_EditImp::CountSelRanges() {
+int32_t IFWL_Edit::CountSelRanges() {
   if (!m_pEdtEngine)
     return 0;
   return m_pEdtEngine->CountSelRanges();
 }
 
-int32_t CFWL_EditImp::GetSelRange(int32_t nIndex, int32_t& nStart) {
+int32_t IFWL_Edit::GetSelRange(int32_t nIndex, int32_t& nStart) {
   if (!m_pEdtEngine)
     return -1;
   return m_pEdtEngine->GetSelRange(nIndex, nStart);
 }
 
-FWL_Error CFWL_EditImp::ClearSelections() {
+FWL_Error IFWL_Edit::ClearSelections() {
   if (!m_pEdtEngine)
     return FWL_Error::Indefinite;
 
@@ -603,11 +464,11 @@ FWL_Error CFWL_EditImp::ClearSelections() {
   return FWL_Error::Succeeded;
 }
 
-int32_t CFWL_EditImp::GetLimit() {
+int32_t IFWL_Edit::GetLimit() {
   return m_nLimit;
 }
 
-FWL_Error CFWL_EditImp::SetLimit(int32_t nLimit) {
+FWL_Error IFWL_Edit::SetLimit(int32_t nLimit) {
   m_nLimit = nLimit;
   if (!m_pEdtEngine)
     return FWL_Error::Indefinite;
@@ -616,7 +477,7 @@ FWL_Error CFWL_EditImp::SetLimit(int32_t nLimit) {
   return FWL_Error::Succeeded;
 }
 
-FWL_Error CFWL_EditImp::SetAliasChar(FX_WCHAR wAlias) {
+FWL_Error IFWL_Edit::SetAliasChar(FX_WCHAR wAlias) {
   if (!m_pEdtEngine)
     return FWL_Error::Indefinite;
 
@@ -624,9 +485,9 @@ FWL_Error CFWL_EditImp::SetAliasChar(FX_WCHAR wAlias) {
   return FWL_Error::Succeeded;
 }
 
-FWL_Error CFWL_EditImp::Insert(int32_t nStart,
-                               const FX_WCHAR* lpText,
-                               int32_t nLen) {
+FWL_Error IFWL_Edit::Insert(int32_t nStart,
+                            const FX_WCHAR* lpText,
+                            int32_t nLen) {
   if (!m_pEdtEngine)
     return FWL_Error::Indefinite;
 
@@ -638,7 +499,7 @@ FWL_Error CFWL_EditImp::Insert(int32_t nStart,
   return FWL_Error::Succeeded;
 }
 
-FWL_Error CFWL_EditImp::DeleteSelections() {
+FWL_Error IFWL_Edit::DeleteSelections() {
   if (!m_pEdtEngine)
     return FWL_Error::Indefinite;
 
@@ -648,7 +509,7 @@ FWL_Error CFWL_EditImp::DeleteSelections() {
   return FWL_Error::Succeeded;
 }
 
-FWL_Error CFWL_EditImp::DeleteRange(int32_t nStart, int32_t nCount) {
+FWL_Error IFWL_Edit::DeleteRange(int32_t nStart, int32_t nCount) {
   if (!m_pEdtEngine)
     return FWL_Error::Indefinite;
 
@@ -656,9 +517,9 @@ FWL_Error CFWL_EditImp::DeleteRange(int32_t nStart, int32_t nCount) {
   return FWL_Error::Succeeded;
 }
 
-FWL_Error CFWL_EditImp::Replace(int32_t nStart,
-                                int32_t nLen,
-                                const CFX_WideStringC& wsReplace) {
+FWL_Error IFWL_Edit::Replace(int32_t nStart,
+                             int32_t nLen,
+                             const CFX_WideStringC& wsReplace) {
   if (!m_pEdtEngine)
     return FWL_Error::Indefinite;
 
@@ -666,7 +527,7 @@ FWL_Error CFWL_EditImp::Replace(int32_t nStart,
   return FWL_Error::Succeeded;
 }
 
-FWL_Error CFWL_EditImp::DoClipboard(int32_t iCmd) {
+FWL_Error IFWL_Edit::DoClipboard(int32_t iCmd) {
   if (!m_pEdtEngine)
     return FWL_Error::Indefinite;
 
@@ -677,7 +538,7 @@ FWL_Error CFWL_EditImp::DoClipboard(int32_t iCmd) {
   return FWL_Error::Indefinite;
 }
 
-FX_BOOL CFWL_EditImp::Copy(CFX_WideString& wsCopy) {
+FX_BOOL IFWL_Edit::Copy(CFX_WideString& wsCopy) {
   if (!m_pEdtEngine)
     return FALSE;
 
@@ -697,7 +558,7 @@ FX_BOOL CFWL_EditImp::Copy(CFX_WideString& wsCopy) {
   return TRUE;
 }
 
-FX_BOOL CFWL_EditImp::Cut(CFX_WideString& wsCut) {
+FX_BOOL IFWL_Edit::Cut(CFX_WideString& wsCut) {
   if (!m_pEdtEngine)
     return FALSE;
 
@@ -718,7 +579,7 @@ FX_BOOL CFWL_EditImp::Cut(CFX_WideString& wsCut) {
   return TRUE;
 }
 
-FX_BOOL CFWL_EditImp::Paste(const CFX_WideString& wsPaste) {
+FX_BOOL IFWL_Edit::Paste(const CFX_WideString& wsPaste) {
   if (!m_pEdtEngine)
     return FALSE;
 
@@ -732,7 +593,7 @@ FX_BOOL CFWL_EditImp::Paste(const CFX_WideString& wsPaste) {
   return TRUE;
 }
 
-FX_BOOL CFWL_EditImp::Delete() {
+FX_BOOL IFWL_Edit::Delete() {
   if (!m_pEdtEngine)
     return FALSE;
 
@@ -744,7 +605,7 @@ FX_BOOL CFWL_EditImp::Delete() {
   return TRUE;
 }
 
-FX_BOOL CFWL_EditImp::Redo(const IFDE_TxtEdtDoRecord* pRecord) {
+FX_BOOL IFWL_Edit::Redo(const IFDE_TxtEdtDoRecord* pRecord) {
   if (!m_pEdtEngine)
     return FALSE;
   if (m_pProperties->m_dwStyleExes & FWL_STYLEEXT_EDT_NoRedoUndo)
@@ -752,7 +613,7 @@ FX_BOOL CFWL_EditImp::Redo(const IFDE_TxtEdtDoRecord* pRecord) {
   return m_pEdtEngine->Redo(pRecord);
 }
 
-FX_BOOL CFWL_EditImp::Undo(const IFDE_TxtEdtDoRecord* pRecord) {
+FX_BOOL IFWL_Edit::Undo(const IFDE_TxtEdtDoRecord* pRecord) {
   if (!m_pEdtEngine)
     return FALSE;
   if (m_pProperties->m_dwStyleExes & FWL_STYLEEXT_EDT_NoRedoUndo)
@@ -760,27 +621,27 @@ FX_BOOL CFWL_EditImp::Undo(const IFDE_TxtEdtDoRecord* pRecord) {
   return m_pEdtEngine->Undo(pRecord);
 }
 
-FX_BOOL CFWL_EditImp::Undo() {
+FX_BOOL IFWL_Edit::Undo() {
   if (!CanUndo())
     return FALSE;
   return Undo(m_DoRecords[m_iCurRecord--].get());
 }
 
-FX_BOOL CFWL_EditImp::Redo() {
+FX_BOOL IFWL_Edit::Redo() {
   if (!CanRedo())
     return FALSE;
   return Redo(m_DoRecords[++m_iCurRecord].get());
 }
 
-FX_BOOL CFWL_EditImp::CanUndo() {
+FX_BOOL IFWL_Edit::CanUndo() {
   return m_iCurRecord >= 0;
 }
 
-FX_BOOL CFWL_EditImp::CanRedo() {
+FX_BOOL IFWL_Edit::CanRedo() {
   return m_iCurRecord < pdfium::CollectionSize<int32_t>(m_DoRecords) - 1;
 }
 
-FWL_Error CFWL_EditImp::SetTabWidth(FX_FLOAT fTabWidth, FX_BOOL bEquidistant) {
+FWL_Error IFWL_Edit::SetTabWidth(FX_FLOAT fTabWidth, FX_BOOL bEquidistant) {
   if (!m_pEdtEngine)
     return FWL_Error::Indefinite;
 
@@ -790,21 +651,21 @@ FWL_Error CFWL_EditImp::SetTabWidth(FX_FLOAT fTabWidth, FX_BOOL bEquidistant) {
   return FWL_Error::Succeeded;
 }
 
-FWL_Error CFWL_EditImp::SetOuter(IFWL_Widget* pOuter) {
+FWL_Error IFWL_Edit::SetOuter(IFWL_Widget* pOuter) {
   m_pOuter = pOuter;
   return FWL_Error::Succeeded;
 }
 
-FWL_Error CFWL_EditImp::SetNumberRange(int32_t iMin, int32_t iMax) {
+FWL_Error IFWL_Edit::SetNumberRange(int32_t iMin, int32_t iMax) {
   m_iMin = iMin;
   m_iMax = iMax;
   m_bSetRange = TRUE;
   return FWL_Error::Succeeded;
 }
 
-void CFWL_EditImp::On_CaretChanged(CFDE_TxtEdtEngine* pEdit,
-                                   int32_t nPage,
-                                   FX_BOOL bVisible) {
+void IFWL_Edit::On_CaretChanged(CFDE_TxtEdtEngine* pEdit,
+                                int32_t nPage,
+                                FX_BOOL bVisible) {
   if (m_rtEngine.IsEmpty())
     return;
   if ((m_pProperties->m_dwStates & FWL_WGTSTATE_Focused) == 0)
@@ -830,8 +691,8 @@ void CFWL_EditImp::On_CaretChanged(CFDE_TxtEdtEngine* pEdit,
   }
 }
 
-void CFWL_EditImp::On_TextChanged(CFDE_TxtEdtEngine* pEdit,
-                                  FDE_TXTEDT_TEXTCHANGE_INFO& ChangeInfo) {
+void IFWL_Edit::On_TextChanged(CFDE_TxtEdtEngine* pEdit,
+                               FDE_TXTEDT_TEXTCHANGE_INFO& ChangeInfo) {
   uint32_t dwStyleEx = m_pProperties->m_dwStyleExes;
   if (dwStyleEx & FWL_STYLEEXT_EDT_VAlignMask)
     UpdateVAlignment();
@@ -848,7 +709,7 @@ void CFWL_EditImp::On_TextChanged(CFDE_TxtEdtEngine* pEdit,
   FX_BOOL bNeedUpdate = FALSE;
   if (bHSelfAdaption || bVSelfAdaption) {
     CFWL_EvtEdtPreSelfAdaption evt;
-    evt.m_pSrcTarget = m_pInterface;
+    evt.m_pSrcTarget = this;
     evt.bHSelfAdaption = TRUE;
     evt.bVSelfAdaption = TRUE;
     FX_FLOAT fWidth;
@@ -886,7 +747,7 @@ void CFWL_EditImp::On_TextChanged(CFDE_TxtEdtEngine* pEdit,
     m_pProperties->m_rtWidget.height = fContentHeight1;
   }
   CFWL_EvtEdtTextChanged event;
-  event.m_pSrcTarget = m_pInterface;
+  event.m_pSrcTarget = this;
   event.nChangeType = ChangeInfo.nChangeType;
   event.wsInsert = ChangeInfo.wsInsert;
   event.wsDelete = ChangeInfo.wsDelete;
@@ -896,15 +757,15 @@ void CFWL_EditImp::On_TextChanged(CFDE_TxtEdtEngine* pEdit,
   Repaint(&rtTemp);
 }
 
-void CFWL_EditImp::On_SelChanged(CFDE_TxtEdtEngine* pEdit) {
+void IFWL_Edit::On_SelChanged(CFDE_TxtEdtEngine* pEdit) {
   CFX_RectF rtTemp;
   GetClientRect(rtTemp);
   Repaint(&rtTemp);
 }
 
-FX_BOOL CFWL_EditImp::On_PageLoad(CFDE_TxtEdtEngine* pEdit,
-                                  int32_t nPageIndex,
-                                  int32_t nPurpose) {
+FX_BOOL IFWL_Edit::On_PageLoad(CFDE_TxtEdtEngine* pEdit,
+                               int32_t nPageIndex,
+                               int32_t nPurpose) {
   IFDE_TxtEdtPage* pPage = m_pEdtEngine->GetPage(nPageIndex);
   if (!pPage)
     return FALSE;
@@ -912,9 +773,9 @@ FX_BOOL CFWL_EditImp::On_PageLoad(CFDE_TxtEdtEngine* pEdit,
   return TRUE;
 }
 
-FX_BOOL CFWL_EditImp::On_PageUnload(CFDE_TxtEdtEngine* pEdit,
-                                    int32_t nPageIndex,
-                                    int32_t nPurpose) {
+FX_BOOL IFWL_Edit::On_PageUnload(CFDE_TxtEdtEngine* pEdit,
+                                 int32_t nPageIndex,
+                                 int32_t nPurpose) {
   IFDE_TxtEdtPage* pPage = m_pEdtEngine->GetPage(nPageIndex);
   if (!pPage)
     return FALSE;
@@ -922,43 +783,43 @@ FX_BOOL CFWL_EditImp::On_PageUnload(CFDE_TxtEdtEngine* pEdit,
   return TRUE;
 }
 
-void CFWL_EditImp::On_AddDoRecord(CFDE_TxtEdtEngine* pEdit,
-                                  IFDE_TxtEdtDoRecord* pRecord) {
+void IFWL_Edit::On_AddDoRecord(CFDE_TxtEdtEngine* pEdit,
+                               IFDE_TxtEdtDoRecord* pRecord) {
   AddDoRecord(pRecord);
 }
 
-FX_BOOL CFWL_EditImp::On_Validate(CFDE_TxtEdtEngine* pEdit,
-                                  CFX_WideString& wsText) {
+FX_BOOL IFWL_Edit::On_Validate(CFDE_TxtEdtEngine* pEdit,
+                               CFX_WideString& wsText) {
   IFWL_Widget* pDst = GetOuter();
   if (!pDst) {
-    pDst = m_pInterface;
+    pDst = this;
   }
   CFWL_EvtEdtValidate event;
   event.pDstWidget = pDst;
-  event.m_pSrcTarget = m_pInterface;
+  event.m_pSrcTarget = this;
   event.wsInsert = wsText;
   event.bValidate = TRUE;
   DispatchEvent(&event);
   return event.bValidate;
 }
-FWL_Error CFWL_EditImp::SetBackgroundColor(uint32_t color) {
+FWL_Error IFWL_Edit::SetBackgroundColor(uint32_t color) {
   m_backColor = color;
   m_updateBackColor = TRUE;
   return FWL_Error::Succeeded;
 }
-FWL_Error CFWL_EditImp::SetFont(const CFX_WideString& wsFont, FX_FLOAT fSize) {
+FWL_Error IFWL_Edit::SetFont(const CFX_WideString& wsFont, FX_FLOAT fSize) {
   m_wsFont = wsFont;
   m_fFontSize = fSize;
   return FWL_Error::Succeeded;
 }
-void CFWL_EditImp::SetScrollOffset(FX_FLOAT fScrollOffset) {
+void IFWL_Edit::SetScrollOffset(FX_FLOAT fScrollOffset) {
   m_fScrollOffsetY = fScrollOffset;
 }
-void CFWL_EditImp::DrawTextBk(CFX_Graphics* pGraphics,
-                              IFWL_ThemeProvider* pTheme,
-                              const CFX_Matrix* pMatrix) {
+void IFWL_Edit::DrawTextBk(CFX_Graphics* pGraphics,
+                           IFWL_ThemeProvider* pTheme,
+                           const CFX_Matrix* pMatrix) {
   CFWL_ThemeBackground param;
-  param.m_pWidget = m_pInterface;
+  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
@@ -986,9 +847,9 @@ void CFWL_EditImp::DrawTextBk(CFX_Graphics* pGraphics,
   param.m_rtPart = rtStatic;
   pTheme->DrawBackground(&param);
 }
-void CFWL_EditImp::DrawContent(CFX_Graphics* pGraphics,
-                               IFWL_ThemeProvider* pTheme,
-                               const CFX_Matrix* pMatrix) {
+void IFWL_Edit::DrawContent(CFX_Graphics* pGraphics,
+                            IFWL_ThemeProvider* pTheme,
+                            const CFX_Matrix* pMatrix) {
   if (!m_pEdtEngine)
     return;
   IFDE_TxtEdtPage* pPage = m_pEdtEngine->GetPage(0);
@@ -1011,7 +872,7 @@ void CFWL_EditImp::DrawContent(CFX_Graphics* pGraphics,
       (m_pProperties->m_dwStyleExes & FWL_STYLEEXT_EDT_NoHideSel) ||
       (m_pProperties->m_dwStates & FWL_WGTSTATE_Focused);
   if (bShowSel) {
-    IFWL_Widget* pForm = m_pWidgetMgr->GetSystemFormWidget(m_pInterface);
+    IFWL_Widget* pForm = m_pWidgetMgr->GetSystemFormWidget(this);
     if (pForm) {
       bShowSel = (pForm->GetStates() & FWL_WGTSTATE_Deactivated) !=
                  FWL_WGTSTATE_Deactivated;
@@ -1050,7 +911,7 @@ void CFWL_EditImp::DrawContent(CFX_Graphics* pGraphics,
     CFWL_ThemeBackground param;
     param.m_pGraphics = pGraphics;
     param.m_matrix = *pMatrix;
-    param.m_pWidget = m_pInterface;
+    param.m_pWidget = this;
     param.m_iPart = CFWL_Part::Background;
     param.m_pPath = &path;
     pTheme->DrawBackground(&param);
@@ -1079,7 +940,7 @@ void CFWL_EditImp::DrawContent(CFX_Graphics* pGraphics,
     CFWL_ThemeBackground param;
     param.m_pGraphics = pGraphics;
     param.m_matrix = *pMatrix;
-    param.m_pWidget = m_pInterface;
+    param.m_pWidget = this;
     param.m_iPart = CFWL_Part::CombTextLine;
     param.m_pPath = &path;
     pTheme->DrawBackground(&param);
@@ -1087,14 +948,14 @@ void CFWL_EditImp::DrawContent(CFX_Graphics* pGraphics,
   pGraphics->RestoreGraphState();
 }
 
-void CFWL_EditImp::UpdateEditEngine() {
+void IFWL_Edit::UpdateEditEngine() {
   UpdateEditParams();
   UpdateEditLayout();
   if (m_nLimit > -1) {
     m_pEdtEngine->SetLimit(m_nLimit);
   }
 }
-void CFWL_EditImp::UpdateEditParams() {
+void IFWL_Edit::UpdateEditParams() {
   FDE_TXTEDTPARAMS params;
   params.nHorzScale = 100;
   params.fPlateWidth = m_rtEngine.width;
@@ -1210,7 +1071,7 @@ void CFWL_EditImp::UpdateEditParams() {
   m_pEdtEngine->SetEditParams(params);
 }
 
-void CFWL_EditImp::UpdateEditLayout() {
+void IFWL_Edit::UpdateEditLayout() {
   if (m_pEdtEngine->GetTextLength() <= 0)
     m_pEdtEngine->SetTextByStream(nullptr);
 
@@ -1226,7 +1087,7 @@ void CFWL_EditImp::UpdateEditLayout() {
     pPage->LoadPage(nullptr, nullptr);
 }
 
-FX_BOOL CFWL_EditImp::UpdateOffset() {
+FX_BOOL IFWL_Edit::UpdateOffset() {
   CFX_RectF rtCaret;
   m_pEdtEngine->GetCaretRect(rtCaret);
   FX_FLOAT fOffSetX = m_rtEngine.left - m_fScrollOffsetX;
@@ -1270,8 +1131,8 @@ FX_BOOL CFWL_EditImp::UpdateOffset() {
   return TRUE;
 }
 
-FX_BOOL CFWL_EditImp::UpdateOffset(IFWL_ScrollBar* pScrollBar,
-                                   FX_FLOAT fPosChanged) {
+FX_BOOL IFWL_Edit::UpdateOffset(IFWL_ScrollBar* pScrollBar,
+                                FX_FLOAT fPosChanged) {
   if (pScrollBar == m_pHorzScrollBar.get())
     m_fScrollOffsetX += fPosChanged;
   else
@@ -1279,7 +1140,7 @@ FX_BOOL CFWL_EditImp::UpdateOffset(IFWL_ScrollBar* pScrollBar,
   return TRUE;
 }
 
-void CFWL_EditImp::UpdateVAlignment() {
+void IFWL_Edit::UpdateVAlignment() {
   IFDE_TxtEdtPage* pPage = m_pEdtEngine->GetPage(0);
   if (!pPage)
     return;
@@ -1317,7 +1178,7 @@ void CFWL_EditImp::UpdateVAlignment() {
     m_fVAlignOffset = 0;
   }
 }
-void CFWL_EditImp::UpdateCaret() {
+void IFWL_Edit::UpdateCaret() {
   CFX_RectF rtFDE;
   m_pEdtEngine->GetCaretRect(rtFDE);
   rtFDE.Offset(m_rtEngine.left - m_fScrollOffsetX,
@@ -1354,7 +1215,7 @@ void CFWL_EditImp::UpdateCaret() {
   }
   ShowCaret(bShow, &rtCaret);
 }
-IFWL_ScrollBar* CFWL_EditImp::UpdateScroll() {
+IFWL_ScrollBar* IFWL_Edit::UpdateScroll() {
   FX_BOOL bShowHorz =
       m_pHorzScrollBar &&
       ((m_pHorzScrollBar->GetStates() & FWL_WGTSTATE_Invisible) == 0);
@@ -1437,7 +1298,7 @@ IFWL_ScrollBar* CFWL_EditImp::UpdateScroll() {
   }
   return pRepaint;
 }
-FX_BOOL CFWL_EditImp::IsShowScrollBar(FX_BOOL bVert) {
+FX_BOOL IFWL_Edit::IsShowScrollBar(FX_BOOL bVert) {
   FX_BOOL bShow =
       (m_pProperties->m_dwStyleExes & FWL_STYLEEXT_EDT_ShowScrollbarFocus)
           ? (m_pProperties->m_dwStates & FWL_WGTSTATE_Focused) ==
@@ -1451,7 +1312,7 @@ FX_BOOL CFWL_EditImp::IsShowScrollBar(FX_BOOL bVert) {
   return bShow && (m_pProperties->m_dwStyles & FWL_WGTSTYLE_HScroll) &&
          (m_pProperties->m_dwStyleExes & FWL_STYLEEXT_EDT_MultiLine);
 }
-FX_BOOL CFWL_EditImp::IsContentHeightOverflow() {
+FX_BOOL IFWL_Edit::IsContentHeightOverflow() {
   if (!m_pEdtEngine)
     return FALSE;
   IFDE_TxtEdtPage* pPage = m_pEdtEngine->GetPage(0);
@@ -1459,7 +1320,7 @@ FX_BOOL CFWL_EditImp::IsContentHeightOverflow() {
     return FALSE;
   return pPage->GetContentsBox().height > m_rtEngine.height + 1.0f;
 }
-int32_t CFWL_EditImp::AddDoRecord(IFDE_TxtEdtDoRecord* pRecord) {
+int32_t IFWL_Edit::AddDoRecord(IFDE_TxtEdtDoRecord* pRecord) {
   int32_t nCount = pdfium::CollectionSize<int32_t>(m_DoRecords);
   if (m_iCurRecord == nCount - 1) {
     if (nCount == m_iMaxRecord) {
@@ -1475,7 +1336,7 @@ int32_t CFWL_EditImp::AddDoRecord(IFDE_TxtEdtDoRecord* pRecord) {
   m_iCurRecord = pdfium::CollectionSize<int32_t>(m_DoRecords) - 1;
   return m_iCurRecord;
 }
-void CFWL_EditImp::Layout() {
+void IFWL_Edit::Layout() {
   GetClientRect(m_rtClient);
   m_rtEngine = m_rtClient;
   FX_FLOAT* pfWidth = static_cast<FX_FLOAT*>(
@@ -1544,7 +1405,7 @@ void CFWL_EditImp::Layout() {
     m_pHorzScrollBar->SetStates(FWL_WGTSTATE_Invisible, TRUE);
   }
 }
-void CFWL_EditImp::LayoutScrollBar() {
+void IFWL_Edit::LayoutScrollBar() {
   if ((m_pProperties->m_dwStyleExes & FWL_STYLEEXT_EDT_ShowScrollbarFocus) ==
       0) {
     return;
@@ -1607,26 +1468,26 @@ void CFWL_EditImp::LayoutScrollBar() {
   }
 }
 
-void CFWL_EditImp::DeviceToEngine(CFX_PointF& pt) {
+void IFWL_Edit::DeviceToEngine(CFX_PointF& pt) {
   pt.x += m_fScrollOffsetX - m_rtEngine.left;
   pt.y += m_fScrollOffsetY - m_rtEngine.top - m_fVAlignOffset;
 }
 
-void CFWL_EditImp::InitScrollBar(FX_BOOL bVert) {
+void IFWL_Edit::InitScrollBar(FX_BOOL bVert) {
   if ((bVert && m_pVertScrollBar) || (!bVert && m_pHorzScrollBar)) {
     return;
   }
   CFWL_WidgetImpProperties prop;
   prop.m_dwStyleExes = bVert ? FWL_STYLEEXT_SCB_Vert : FWL_STYLEEXT_SCB_Horz;
   prop.m_dwStates = FWL_WGTSTATE_Disabled | FWL_WGTSTATE_Invisible;
-  prop.m_pParent = m_pInterface;
+  prop.m_pParent = this;
   prop.m_pThemeProvider = m_pProperties->m_pThemeProvider;
-  IFWL_ScrollBar* pScrollBar = IFWL_ScrollBar::Create(prop, m_pInterface);
+  IFWL_ScrollBar* pScrollBar = IFWL_ScrollBar::Create(prop, this);
   pScrollBar->Initialize();
   (bVert ? &m_pVertScrollBar : &m_pHorzScrollBar)->reset(pScrollBar);
 }
 
-void CFWL_EditImp::InitEngine() {
+void IFWL_Edit::InitEngine() {
   if (!m_pEdtEngine)
     m_pEdtEngine.reset(new CFDE_TxtEdtEngine);
 }
@@ -1656,7 +1517,7 @@ FX_BOOL FWL_ShowCaret(IFWL_Widget* pWidget,
   return TRUE;
 }
 
-void CFWL_EditImp::ShowCaret(FX_BOOL bVisible, CFX_RectF* pRect) {
+void IFWL_Edit::ShowCaret(FX_BOOL bVisible, CFX_RectF* pRect) {
   if (m_pCaret) {
     m_pCaret->ShowCaret(bVisible);
     if (bVisible && !pRect->IsEmpty()) {
@@ -1664,7 +1525,7 @@ void CFWL_EditImp::ShowCaret(FX_BOOL bVisible, CFX_RectF* pRect) {
     }
     Repaint(&m_rtEngine);
   } else {
-    IFWL_Widget* pOuter = m_pInterface;
+    IFWL_Widget* pOuter = this;
     if (bVisible) {
       pRect->Offset(m_pProperties->m_rtWidget.left,
                     m_pProperties->m_rtWidget.top);
@@ -1680,7 +1541,7 @@ void CFWL_EditImp::ShowCaret(FX_BOOL bVisible, CFX_RectF* pRect) {
     FWL_ShowCaret(pOuter, bVisible, pRect);
   }
 }
-FX_BOOL CFWL_EditImp::ValidateNumberChar(FX_WCHAR cNum) {
+FX_BOOL IFWL_Edit::ValidateNumberChar(FX_WCHAR cNum) {
   if (!m_pEdtEngine) {
     return FALSE;
   }
@@ -1715,13 +1576,13 @@ FX_BOOL CFWL_EditImp::ValidateNumberChar(FX_WCHAR cNum) {
   }
   return FALSE;
 }
-void CFWL_EditImp::InitCaret() {
+void IFWL_Edit::InitCaret() {
   if (!m_pCaret) {
     if ((m_pProperties->m_dwStyleExes & FWL_STYLEEXT_EDT_InnerCaret)) {
       CFWL_WidgetImpProperties prop;
-      m_pCaret.reset(IFWL_Caret::Create(prop, m_pInterface));
+      m_pCaret.reset(IFWL_Caret::Create(prop, this));
       m_pCaret->Initialize();
-      m_pCaret->SetParent(m_pInterface);
+      m_pCaret->SetParent(this);
       m_pCaret->SetStates(m_pProperties->m_dwStates);
     }
   } else if ((m_pProperties->m_dwStyleExes & FWL_STYLEEXT_EDT_InnerCaret) ==
@@ -1730,16 +1591,16 @@ void CFWL_EditImp::InitCaret() {
   }
 }
 
-void CFWL_EditImp::ClearRecord() {
+void IFWL_Edit::ClearRecord() {
   m_iCurRecord = -1;
   m_DoRecords.clear();
 }
 
-void CFWL_EditImp::ProcessInsertError(int32_t iError) {
+void IFWL_Edit::ProcessInsertError(int32_t iError) {
   switch (iError) {
     case -2: {
       CFWL_EvtEdtTextFull textFullEvent;
-      textFullEvent.m_pSrcTarget = m_pInterface;
+      textFullEvent.m_pSrcTarget = this;
       DispatchEvent(&textFullEvent);
       break;
     }
@@ -1747,7 +1608,7 @@ void CFWL_EditImp::ProcessInsertError(int32_t iError) {
   }
 }
 
-CFWL_EditImpDelegate::CFWL_EditImpDelegate(CFWL_EditImp* pOwner)
+CFWL_EditImpDelegate::CFWL_EditImpDelegate(IFWL_Edit* pOwner)
     : m_pOwner(pOwner) {}
 
 void CFWL_EditImpDelegate::OnProcessMessage(CFWL_Message* pMessage) {
@@ -1805,9 +1666,7 @@ void CFWL_EditImpDelegate::OnProcessMessage(CFWL_Message* pMessage) {
         OnChar(pKey);
       break;
     }
-    default: {
-      break;
-    }
+    default: { break; }
   }
   CFWL_WidgetImpDelegate::OnProcessMessage(pMessage);
 }