Use virtual function to retrieve interface pointer

xfa/fxfa/app/xfa_fftextedit.cpp

 // 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/fxfa/app/xfa_fftextedit.h"
 
 #include <vector>
 
@@ skipping 93 matching lines @@
     m_dwStatus |= XFA_WidgetStatus_Focused;
     UpdateFWLData();
     AddInvalidateRect();
   }
   SetButtonDown(TRUE);
   CFWL_MsgMouse ms;
   ms.m_dwCmd = FWL_MouseCommand::LeftButtonDown;
   ms.m_dwFlags = dwFlags;
   ms.m_fx = fx;
   ms.m_fy = fy;
-  ms.m_pDstTarget = m_pNormalWidget->m_pIface;
+  ms.m_pDstTarget = m_pNormalWidget->GetWidget();
   FWLToClient(ms.m_fx, ms.m_fy);
   TranslateFWLMessage(&ms);
   return TRUE;
 }
 FX_BOOL CXFA_FFTextEdit::OnRButtonDown(uint32_t dwFlags,
                                        FX_FLOAT fx,
                                        FX_FLOAT fy) {
   if (m_pDataAcc->GetAccess() != XFA_ATTRIBUTEENUM_Open) {
     return FALSE;
   }
@@ skipping 26 matching lines @@
 }
 FX_BOOL CXFA_FFTextEdit::OnSetFocus(CXFA_FFWidget* pOldWidget) {
   m_dwStatus &= ~XFA_WidgetStatus_TextEditValueChanged;
   if (!IsFocused()) {
     m_dwStatus |= XFA_WidgetStatus_Focused;
     UpdateFWLData();
     AddInvalidateRect();
   }
   CXFA_FFWidget::OnSetFocus(pOldWidget);
   CFWL_MsgSetFocus ms;
-  ms.m_pDstTarget = m_pNormalWidget->m_pIface;
+  ms.m_pDstTarget = m_pNormalWidget->GetWidget();
   ms.m_pSrcTarget = nullptr;
   TranslateFWLMessage(&ms);
   return TRUE;
 }
 FX_BOOL CXFA_FFTextEdit::OnKillFocus(CXFA_FFWidget* pNewWidget) {
   CFWL_MsgKillFocus ms;
-  ms.m_pDstTarget = m_pNormalWidget->m_pIface;
+  ms.m_pDstTarget = m_pNormalWidget->GetWidget();
   ms.m_pSrcTarget = nullptr;
   TranslateFWLMessage(&ms);
   m_dwStatus &= ~XFA_WidgetStatus_Focused;
   SetEditScrollOffset();
   ProcessCommittedData();
   UpdateFWLData();
   AddInvalidateRect();
   CXFA_FFWidget::OnKillFocus(pNewWidget);
   m_dwStatus &= ~XFA_WidgetStatus_TextEditValueChanged;
   return TRUE;
@@ skipping 613 matching lines @@
 
 void CXFA_FFDateTimeEdit::OnProcessEvent(CFWL_Event* pEvent) {
   if (pEvent->GetClassID() == CFWL_EventType::SelectChanged) {
     CFWL_Event_DtpSelectChanged* event = (CFWL_Event_DtpSelectChanged*)pEvent;
     OnSelectChanged(m_pNormalWidget->GetWidget(), event->iYear, event->iMonth,
                     event->iDay);
     return;
   }
   CXFA_FFTextEdit::OnProcessEvent(pEvent);
 }