Remove NULL in xfa/

xfa/fwl/core/fwl_widgetimp.h

 // 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
 
 #ifndef XFA_FWL_CORE_FWL_WIDGETIMP_H_
 #define XFA_FWL_CORE_FWL_WIDGETIMP_H_
 
 #include "core/fxcrt/include/fx_coordinates.h"
@@ skipping 45 matching lines @@
   virtual FWL_Error LockUpdate();
   virtual FWL_Error UnlockUpdate();
   virtual FWL_WidgetHit HitTest(FX_FLOAT fx, FX_FLOAT fy);
   virtual FWL_Error TransformTo(IFWL_Widget* pWidget,
                                 FX_FLOAT& fx,
                                 FX_FLOAT& fy);
   virtual FWL_Error TransformTo(IFWL_Widget* pWidget, CFX_RectF& rt);
   virtual FWL_Error GetMatrix(CFX_Matrix& matrix, FX_BOOL bGlobal = FALSE);
   virtual FWL_Error SetMatrix(const CFX_Matrix& matrix);
   virtual FWL_Error DrawWidget(CFX_Graphics* pGraphics,
-                               const CFX_Matrix* pMatrix = NULL);
+                               const CFX_Matrix* pMatrix = nullptr);
   virtual IFWL_ThemeProvider* GetThemeProvider();
   virtual FWL_Error SetThemeProvider(IFWL_ThemeProvider* pThemeProvider);
   virtual FWL_Error SetDataProvider(IFWL_DataProvider* pDataProvider);
   virtual IFWL_WidgetDelegate* SetDelegate(IFWL_WidgetDelegate* pDelegate);
   virtual IFWL_App* GetOwnerApp() const;
 
   FWL_Error SetOwnerApp(CFWL_AppImp* pOwnerApp);
   IFWL_Widget* GetInterface() const;
   void SetInterface(IFWL_Widget* pInterface);
   CFX_SizeF GetOffsetFromParent(IFWL_Widget* pParent);
@@ skipping 48 matching lines @@
                           CFX_RectF& rtPopup);
   FX_BOOL GetPopupPosComboBox(FX_FLOAT fMinHeight,
                               FX_FLOAT fMaxHeight,
                               const CFX_RectF& rtAnchor,
                               CFX_RectF& rtPopup);
   FX_BOOL GetPopupPosGeneral(FX_FLOAT fMinHeight,
                              FX_FLOAT fMaxHeight,
                              const CFX_RectF& rtAnchor,
                              CFX_RectF& rtPopup);
   FX_BOOL GetScreenSize(FX_FLOAT& fx, FX_FLOAT& fy);
-  void RegisterEventTarget(IFWL_Widget* pEventSource = NULL,
+  void RegisterEventTarget(IFWL_Widget* pEventSource = nullptr,
                            uint32_t dwFilter = FWL_EVENT_ALL_MASK);
   void UnregisterEventTarget();
   void DispatchKeyEvent(CFWL_MsgKey* pNote);
   void DispatchEvent(CFWL_Event* pEvent);
-  void Repaint(const CFX_RectF* pRect = NULL);
+  void Repaint(const CFX_RectF* pRect = nullptr);
   void DrawBackground(CFX_Graphics* pGraphics,
                       CFWL_Part iPartBk,
                       IFWL_ThemeProvider* pTheme,
-                      const CFX_Matrix* pMatrix = NULL);
+                      const CFX_Matrix* pMatrix = nullptr);
   void DrawBorder(CFX_Graphics* pGraphics,
                   CFWL_Part iPartBorder,
                   IFWL_ThemeProvider* pTheme,
-                  const CFX_Matrix* pMatrix = NULL);
+                  const CFX_Matrix* pMatrix = nullptr);
   void DrawEdge(CFX_Graphics* pGraphics,
                 CFWL_Part iPartEdge,
                 IFWL_ThemeProvider* pTheme,
-                const CFX_Matrix* pMatrix = NULL);
+                const CFX_Matrix* pMatrix = nullptr);
   void NotifyDriver();
 
   FX_BOOL IsParent(IFWL_Widget* pParent);
 
   CFWL_WidgetMgr* m_pWidgetMgr;
   CFWL_AppImp* m_pOwnerApp;
   CFWL_WidgetImpProperties* m_pProperties;
   IFWL_WidgetDelegate* m_pDelegate;
   IFWL_WidgetDelegate* m_pCurDelegate;
   IFWL_Widget* m_pOuter;
   IFWL_Widget* m_pInterface;
   void* m_pLayoutItem;
   void* m_pAssociate;
   int32_t m_iLock;
   uint32_t m_nEventKey;
 };
 
 class CFWL_WidgetImpDelegate : public IFWL_WidgetDelegate {
  public:
   CFWL_WidgetImpDelegate();
   ~CFWL_WidgetImpDelegate() override {}
   void OnProcessMessage(CFWL_Message* pMessage) override;
   void OnProcessEvent(CFWL_Event* pEvent) override;
   void OnDrawWidget(CFX_Graphics* pGraphics,
-                    const CFX_Matrix* pMatrix = NULL) override;
+                    const CFX_Matrix* pMatrix = nullptr) override;
 };
 
 #endif  // XFA_FWL_CORE_FWL_WIDGETIMP_H_