Use virtual function to retrieve interface pointer

xfa/fxfa/app/xfa_fffield.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_fffield.h"
 
 #include "xfa/fwl/basewidget/ifwl_edit.h"
 #include "xfa/fwl/core/cfwl_message.h"
@@ skipping 92 matching lines @@
     pGS->SetLineDash(0.0f, DashPattern, 2);
     pGS->SetLineWidth(0, FALSE);
     CFX_Path path;
     path.Create();
     path.AddRectangle(m_rtUI.left, m_rtUI.top, m_rtUI.width, m_rtUI.height);
     pGS->StrokePath(&path, pMatrix);
   }
 }
 void CXFA_FFField::SetFWLThemeProvider() {
   if (m_pNormalWidget) {
-    m_pNormalWidget->m_pIface->SetThemeProvider(GetApp()->GetFWLTheme());
+    m_pNormalWidget->GetWidget()->SetThemeProvider(GetApp()->GetFWLTheme());
   }
 }
 FX_BOOL CXFA_FFField::IsLoaded() {
   return m_pNormalWidget && CXFA_FFWidget::IsLoaded();
 }
 FX_BOOL CXFA_FFField::LoadWidget() {
   SetFWLThemeProvider();
   m_pDataAcc->LoadCaption();
   PerformLayout();
   return TRUE;
@@ skipping 218 matching lines @@
     }
   }
   m_pNormalWidget->SetWidgetRect(rtUi);
 }
 FX_BOOL CXFA_FFField::OnMouseEnter() {
   if (!m_pNormalWidget) {
     return FALSE;
   }
   CFWL_MsgMouse ms;
   ms.m_dwCmd = FWL_MouseCommand::Enter;
-  ms.m_pDstTarget = m_pNormalWidget->m_pIface;
+  ms.m_pDstTarget = m_pNormalWidget->GetWidget();
   ms.m_pSrcTarget = nullptr;
   TranslateFWLMessage(&ms);
   return TRUE;
 }
 FX_BOOL CXFA_FFField::OnMouseExit() {
   if (!m_pNormalWidget) {
     return FALSE;
   }
   CFWL_MsgMouse ms;
   ms.m_dwCmd = FWL_MouseCommand::Leave;
-  ms.m_pDstTarget = m_pNormalWidget->m_pIface;
+  ms.m_pDstTarget = m_pNormalWidget->GetWidget();
   TranslateFWLMessage(&ms);
   return TRUE;
 }
 void CXFA_FFField::FWLToClient(FX_FLOAT& fx, FX_FLOAT& fy) {
   if (!m_pNormalWidget) {
     return;
   }
   CFX_RectF rtWidget;
   m_pNormalWidget->GetWidgetRect(rtWidget);
   fx -= rtWidget.left;
@@ skipping 12 matching lines @@
   if (!PtInActiveRect(fx, fy)) {
     return FALSE;
   }
   SetButtonDown(TRUE);
   CFWL_MsgMouse ms;
   ms.m_dwCmd = FWL_MouseCommand::LeftButtonDown;
   ms.m_dwFlags = dwFlags;
   ms.m_fx = fx;
   ms.m_fy = fy;
   FWLToClient(ms.m_fx, ms.m_fy);
-  ms.m_pDstTarget = m_pNormalWidget->m_pIface;
+  ms.m_pDstTarget = m_pNormalWidget->GetWidget();
   TranslateFWLMessage(&ms);
   return TRUE;
 }
 FX_BOOL CXFA_FFField::OnLButtonUp(uint32_t dwFlags, FX_FLOAT fx, FX_FLOAT fy) {
   if (!m_pNormalWidget) {
     return FALSE;
   }
   if (!IsButtonDown()) {
     return FALSE;
   }
   SetButtonDown(FALSE);
   CFWL_MsgMouse ms;
   ms.m_dwCmd = FWL_MouseCommand::LeftButtonUp;
   ms.m_dwFlags = dwFlags;
   ms.m_fx = fx;
   ms.m_fy = fy;
   FWLToClient(ms.m_fx, ms.m_fy);
-  ms.m_pDstTarget = m_pNormalWidget->m_pIface;
+  ms.m_pDstTarget = m_pNormalWidget->GetWidget();
   TranslateFWLMessage(&ms);
   return TRUE;
 }
 FX_BOOL CXFA_FFField::OnLButtonDblClk(uint32_t dwFlags,
                                       FX_FLOAT fx,
                                       FX_FLOAT fy) {
   if (!m_pNormalWidget) {
     return FALSE;
   }
   CFWL_MsgMouse ms;
   ms.m_dwCmd = FWL_MouseCommand::LeftButtonDblClk;
   ms.m_dwFlags = dwFlags;
   ms.m_fx = fx;
   ms.m_fy = fy;
   FWLToClient(ms.m_fx, ms.m_fy);
-  ms.m_pDstTarget = m_pNormalWidget->m_pIface;
+  ms.m_pDstTarget = m_pNormalWidget->GetWidget();
   TranslateFWLMessage(&ms);
   return TRUE;
 }
 FX_BOOL CXFA_FFField::OnMouseMove(uint32_t dwFlags, FX_FLOAT fx, FX_FLOAT fy) {
   if (!m_pNormalWidget) {
     return FALSE;
   }
   CFWL_MsgMouse ms;
   ms.m_dwCmd = FWL_MouseCommand::Move;
   ms.m_dwFlags = dwFlags;
   ms.m_fx = fx;
   ms.m_fy = fy;
   FWLToClient(ms.m_fx, ms.m_fy);
-  ms.m_pDstTarget = m_pNormalWidget->m_pIface;
+  ms.m_pDstTarget = m_pNormalWidget->GetWidget();
   TranslateFWLMessage(&ms);
   return TRUE;
 }
 FX_BOOL CXFA_FFField::OnMouseWheel(uint32_t dwFlags,
                                    int16_t zDelta,
                                    FX_FLOAT fx,
                                    FX_FLOAT fy) {
   if (!m_pNormalWidget) {
     return FALSE;
   }
   CFWL_MsgMouseWheel ms;
   ms.m_dwFlags = dwFlags;
   ms.m_fx = fx;
   ms.m_fy = fy;
   FWLToClient(ms.m_fx, ms.m_fy);
   ms.m_fDeltaX = zDelta;
   ms.m_fDeltaY = 0;
-  ms.m_pDstTarget = m_pNormalWidget->m_pIface;
+  ms.m_pDstTarget = m_pNormalWidget->GetWidget();
   TranslateFWLMessage(&ms);
   return TRUE;
 }
 FX_BOOL CXFA_FFField::OnRButtonDown(uint32_t dwFlags,
                                     FX_FLOAT fx,
                                     FX_FLOAT fy) {
   if (!m_pNormalWidget) {
     return FALSE;
   }
   if (m_pDataAcc->GetAccess() != XFA_ATTRIBUTEENUM_Open ||
       !m_pDataAcc->GetDoc()->GetXFADoc()->IsInteractive()) {
     return FALSE;
   }
   if (!PtInActiveRect(fx, fy)) {
     return FALSE;
   }
   SetButtonDown(TRUE);
   CFWL_MsgMouse ms;
   ms.m_dwCmd = FWL_MouseCommand::RightButtonDown;
   ms.m_dwFlags = dwFlags;
   ms.m_fx = fx;
   ms.m_fy = fy;
   FWLToClient(ms.m_fx, ms.m_fy);
-  ms.m_pDstTarget = m_pNormalWidget->m_pIface;
+  ms.m_pDstTarget = m_pNormalWidget->GetWidget();
   TranslateFWLMessage(&ms);
   return TRUE;
 }
 FX_BOOL CXFA_FFField::OnRButtonUp(uint32_t dwFlags, FX_FLOAT fx, FX_FLOAT fy) {
   if (!m_pNormalWidget) {
     return FALSE;
   }
   if (!IsButtonDown()) {
     return FALSE;
   }
   SetButtonDown(FALSE);
   CFWL_MsgMouse ms;
   ms.m_dwCmd = FWL_MouseCommand::RightButtonUp;
   ms.m_dwFlags = dwFlags;
   ms.m_fx = fx;
   ms.m_fy = fy;
   FWLToClient(ms.m_fx, ms.m_fy);
-  ms.m_pDstTarget = m_pNormalWidget->m_pIface;
+  ms.m_pDstTarget = m_pNormalWidget->GetWidget();
   TranslateFWLMessage(&ms);
   return TRUE;
 }
 FX_BOOL CXFA_FFField::OnRButtonDblClk(uint32_t dwFlags,
                                       FX_FLOAT fx,
                                       FX_FLOAT fy) {
   if (!m_pNormalWidget) {
     return FALSE;
   }
   CFWL_MsgMouse ms;
   ms.m_dwCmd = FWL_MouseCommand::RightButtonDblClk;
   ms.m_dwFlags = dwFlags;
   ms.m_fx = fx;
   ms.m_fy = fy;
   FWLToClient(ms.m_fx, ms.m_fy);
-  ms.m_pDstTarget = m_pNormalWidget->m_pIface;
+  ms.m_pDstTarget = m_pNormalWidget->GetWidget();
   TranslateFWLMessage(&ms);
   return TRUE;
 }
 
 FX_BOOL CXFA_FFField::OnSetFocus(CXFA_FFWidget* pOldWidget) {
   CXFA_FFWidget::OnSetFocus(pOldWidget);
   if (!m_pNormalWidget) {
     return FALSE;
   }
   CFWL_MsgSetFocus 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;
   AddInvalidateRect();
   return TRUE;
 }
 FX_BOOL CXFA_FFField::OnKillFocus(CXFA_FFWidget* pNewWidget) {
   if (!m_pNormalWidget) {
     return CXFA_FFWidget::OnKillFocus(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;
   AddInvalidateRect();
   CXFA_FFWidget::OnKillFocus(pNewWidget);
   return TRUE;
 }
 FX_BOOL CXFA_FFField::OnKeyDown(uint32_t dwKeyCode, uint32_t dwFlags) {
   if (!m_pNormalWidget || !m_pDataAcc->GetDoc()->GetXFADoc()->IsInteractive()) {
     return FALSE;
   }
   CFWL_MsgKey ms;
   ms.m_dwCmd = FWL_KeyCommand::KeyDown;
   ms.m_dwFlags = dwFlags;
   ms.m_dwKeyCode = dwKeyCode;
-  ms.m_pDstTarget = m_pNormalWidget->m_pIface;
+  ms.m_pDstTarget = m_pNormalWidget->GetWidget();
   ms.m_pSrcTarget = nullptr;
   TranslateFWLMessage(&ms);
   return TRUE;
 }
 FX_BOOL CXFA_FFField::OnKeyUp(uint32_t dwKeyCode, uint32_t dwFlags) {
   if (!m_pNormalWidget || !m_pDataAcc->GetDoc()->GetXFADoc()->IsInteractive()) {
     return FALSE;
   }
   CFWL_MsgKey ms;
   ms.m_dwCmd = FWL_KeyCommand::KeyUp;
   ms.m_dwFlags = dwFlags;
   ms.m_dwKeyCode = dwKeyCode;
-  ms.m_pDstTarget = m_pNormalWidget->m_pIface;
+  ms.m_pDstTarget = m_pNormalWidget->GetWidget();
   ms.m_pSrcTarget = nullptr;
   TranslateFWLMessage(&ms);
   return TRUE;
 }
 FX_BOOL CXFA_FFField::OnChar(uint32_t dwChar, uint32_t dwFlags) {
   if (!m_pDataAcc->GetDoc()->GetXFADoc()->IsInteractive()) {
     return FALSE;
   }
   if (dwChar == FWL_VKEY_Tab) {
     return TRUE;
   }
   if (!m_pNormalWidget) {
     return FALSE;
   }
   if (m_pDataAcc->GetAccess() != XFA_ATTRIBUTEENUM_Open) {
     return FALSE;
   }
   CFWL_MsgKey ms;
   ms.m_dwCmd = FWL_KeyCommand::Char;
   ms.m_dwFlags = dwFlags;
   ms.m_dwKeyCode = dwChar;
-  ms.m_pDstTarget = m_pNormalWidget->m_pIface;
+  ms.m_pDstTarget = m_pNormalWidget->GetWidget();
   ms.m_pSrcTarget = nullptr;
   TranslateFWLMessage(&ms);
   return TRUE;
 }
 FWL_WidgetHit CXFA_FFField::OnHitTest(FX_FLOAT fx, FX_FLOAT fy) {
   if (m_pNormalWidget) {
     FX_FLOAT ffx = fx, ffy = fy;
     FWLToClient(ffx, ffy);
     if (m_pNormalWidget->HitTest(ffx, ffy) != FWL_WidgetHit::Unknown)
       return FWL_WidgetHit::Client;
@@ skipping 213 matching lines @@
       m_pDataAcc->ProcessEvent(XFA_ATTRIBUTEENUM_Click, &eParam);
       break;
     }
     default:
       break;
   }
 }
 
 void CXFA_FFField::OnDrawWidget(CFX_Graphics* pGraphics,
                                 const CFX_Matrix* pMatrix) {}