Get rid of NULLs in fpdfsdk/

fpdfsdk/pdfwindow/PWL_ListBox.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 "fpdfsdk/pdfwindow/PWL_ListBox.h"
 
 #include "fpdfsdk/pdfwindow/PWL_Edit.h"
 #include "fpdfsdk/pdfwindow/PWL_EditCtrl.h"
@@ skipping 47 matching lines @@
 
 void CPWL_List_Notify::IOnSetScrollPosY(FX_FLOAT fy) {
   m_pList->OnNotify(m_pList, PNM_SETSCROLLPOS, SBT_VSCROLL, (intptr_t)&fy);
 }
 
 void CPWL_List_Notify::IOnInvalidateRect(CFX_FloatRect* pRect) {
   m_pList->InvalidateRect(pRect);
 }
 
 CPWL_ListBox::CPWL_ListBox()
-    : m_pList(NULL),
-      m_pListNotify(NULL),
+    : m_pList(nullptr),
+      m_pListNotify(nullptr),
       m_bMouseDown(FALSE),
       m_bHoverSel(FALSE),
-      m_pFillerNotify(NULL) {
+      m_pFillerNotify(nullptr) {
   m_pList = IFX_List::NewList();
 }
 
 CPWL_ListBox::~CPWL_ListBox() {
   IFX_List::DelList(m_pList);
   delete m_pListNotify;
-  m_pListNotify = NULL;
+  m_pListNotify = nullptr;
 }
 
 CFX_ByteString CPWL_ListBox::GetClassName() const {
   return "CPWL_ListBox";
 }
 
 void CPWL_ListBox::OnCreated() {
   if (m_pList) {
     delete m_pListNotify;
 
     m_pList->SetFontMap(GetFontMap());
     m_pList->SetNotify(m_pListNotify = new CPWL_List_Notify(this));
 
     SetHoverSel(HasFlag(PLBS_HOVERSEL));
     m_pList->SetMultipleSel(HasFlag(PLBS_MULTIPLESEL));
     m_pList->SetFontSize(GetCreationParam().fFontSize);
 
     m_bHoverSel = HasFlag(PLBS_HOVERSEL);
   }
 }
 
 void CPWL_ListBox::OnDestroy() {
   delete m_pListNotify;
-  m_pListNotify = NULL;
+  m_pListNotify = nullptr;
 }
 
 void CPWL_ListBox::GetThisAppearanceStream(CFX_ByteTextBuf& sAppStream) {
   CPWL_Wnd::GetThisAppearanceStream(sAppStream);
 
   CFX_ByteTextBuf sListItems;
 
   if (m_pList) {
     CFX_FloatRect rcPlate = m_pList->GetPlateRect();
     for (int32_t i = 0, sz = m_pList->GetCount(); i < sz; i++) {
@@ skipping 66 matching lines @@
           rcItem.Intersect(rcClient);
       }
 
       if (m_pList->IsItemSelected(i)) {
         CFX_SystemHandler* pSysHandler = GetSystemHandler();
         if (pSysHandler && pSysHandler->IsSelectionImplemented()) {
           IFX_Edit::DrawEdit(
               pDevice, pUser2Device, m_pList->GetItemEdit(i),
               CPWL_Utils::PWLColorToFXColor(GetTextColor()),
               CPWL_Utils::PWLColorToFXColor(GetTextStrokeColor()), rcList,
-              ptOffset, NULL, pSysHandler, m_pFormFiller);
+              ptOffset, nullptr, pSysHandler, m_pFormFiller);
           pSysHandler->OutputSelectedRect(m_pFormFiller, rcItem);
         } else {
           CPWL_Utils::DrawFillRect(pDevice, pUser2Device, rcItem,
                                    ArgbEncode(255, 0, 51, 113));
           IFX_Edit::DrawEdit(pDevice, pUser2Device, m_pList->GetItemEdit(i),
                              ArgbEncode(255, 255, 255, 255), 0, rcList,
-                             ptOffset, NULL, pSysHandler, m_pFormFiller);
+                             ptOffset, nullptr, pSysHandler, m_pFormFiller);
         }
       } else {
         CFX_SystemHandler* pSysHandler = GetSystemHandler();
         IFX_Edit::DrawEdit(pDevice, pUser2Device, m_pList->GetItemEdit(i),
                            CPWL_Utils::PWLColorToFXColor(GetTextColor()),
                            CPWL_Utils::PWLColorToFXColor(GetTextStrokeColor()),
-                           rcList, ptOffset, NULL, pSysHandler, NULL);
+                           rcList, ptOffset, nullptr, pSysHandler, nullptr);
       }
     }
   }
 }
 
 FX_BOOL CPWL_ListBox::OnKeyDown(uint16_t nChar, uint32_t nFlag) {
   CPWL_Wnd::OnKeyDown(nChar, nFlag);
 
   if (!m_pList)
     return FALSE;
@@ skipping 313 matching lines @@
   if (zDelta < 0) {
     m_pList->OnVK_DOWN(IsSHIFTpressed(nFlag), IsCTRLpressed(nFlag));
   } else {
     m_pList->OnVK_UP(IsSHIFTpressed(nFlag), IsCTRLpressed(nFlag));
   }
 
   FX_BOOL bExit = FALSE;
   OnNotifySelChanged(FALSE, bExit, nFlag);
   return TRUE;
 }