Cleanup CFX_SystemHandler.

fpdfsdk/pdfwindow/PWL_Wnd.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 <map>
 
 #include "fpdfsdk/pdfwindow/PWL_ScrollBar.h"
 #include "fpdfsdk/pdfwindow/PWL_Utils.h"
@@ skipping 404 matching lines @@
       }
     }
 
     FX_RECT rcWin = PWLtoWnd(rcRefresh);
     rcWin.left -= PWL_INVALIDATE_INFLATE;
     rcWin.top -= PWL_INVALIDATE_INFLATE;
     rcWin.right += PWL_INVALIDATE_INFLATE;
     rcWin.bottom += PWL_INVALIDATE_INFLATE;
 
     if (CFX_SystemHandler* pSH = GetSystemHandler()) {
-      if (FX_HWND hWnd = GetAttachedHWnd()) {
-        pSH->InvalidateRect(hWnd, rcWin);
-      }
+      if (CPDFSDK_Widget* widget = m_sPrivateParam.hAttachedWnd)
+        pSH->InvalidateRect(widget, rcWin);
     }
   }
 }
 
 #define PWL_IMPLEMENT_KEY_METHOD(key_method_name)                      \
   FX_BOOL CPWL_Wnd::key_method_name(uint16_t nChar, uint32_t nFlag) {  \
     if (IsValid() && IsVisible() && IsEnabled()) {                     \
       if (IsWndCaptureKeyboard(this)) {                                \
         for (int32_t i = 0, sz = m_aChildren.GetSize(); i < sz; i++) { \
           if (CPWL_Wnd* pChild = m_aChildren.GetAt(i)) {               \
@@ skipping 462 matching lines @@
 }
 
 FX_RECT CPWL_Wnd::PWLtoWnd(const CFX_FloatRect& rect) const {
   CFX_FloatRect rcTemp = rect;
   CFX_Matrix mt = GetWindowMatrix();
   mt.TransformRect(rcTemp);
   return FX_RECT((int32_t)(rcTemp.left + 0.5), (int32_t)(rcTemp.bottom + 0.5),
                  (int32_t)(rcTemp.right + 0.5), (int32_t)(rcTemp.top + 0.5));
 }
 
-FX_HWND CPWL_Wnd::GetAttachedHWnd() const {
-  return m_sPrivateParam.hAttachedWnd;
-}
-
 CFX_FloatPoint CPWL_Wnd::ChildToParent(const CFX_FloatPoint& point) const {
   CFX_Matrix mt = GetChildMatrix();
   if (mt.IsIdentity())
     return point;
 
   CFX_FloatPoint pt = point;
   mt.Transform(pt.x, pt.y);
   return pt;
 }
 
@@ skipping 113 matching lines @@
   return FALSE;
 }
 
 FX_BOOL CPWL_Wnd::IsALTpressed(uint32_t nFlag) const {
   if (CFX_SystemHandler* pSystemHandler = GetSystemHandler()) {
     return pSystemHandler->IsALTKeyDown(nFlag);
   }
 
   return FALSE;
 }