Fold IFWL*::{Initialize|Finalize} into constructor/destructor

xfa/fwl/core/ifwl_widget.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_IFWL_WIDGET_H_
 #define XFA_FWL_CORE_IFWL_WIDGET_H_
 
 #include <memory>
@@ skipping 48 matching lines @@
 class IFWL_App;
 class IFWL_DataProvider;
 class IFWL_ThemeProvider;
 class IFWL_Widget;
 enum class FWL_Type;
 
 class IFWL_Widget {
  public:
   virtual ~IFWL_Widget();
 
-  virtual void Initialize();
-  virtual void Finalize();
   virtual FWL_Type GetClassID() const = 0;
   virtual FX_BOOL IsInstance(const CFX_WideStringC& wsClass) const;
 
   virtual FWL_Error GetWidgetRect(CFX_RectF& rect, FX_BOOL bAutoSize = FALSE);
   virtual FWL_Error GetGlobalRect(CFX_RectF& rect);
   virtual FWL_Error SetWidgetRect(const CFX_RectF& rect);
   virtual FWL_Error GetClientRect(CFX_RectF& rect);
 
   virtual IFWL_Widget* GetParent();
   virtual FWL_Error SetParent(IFWL_Widget* pParent);
@@ skipping 115 matching lines @@
                   IFWL_ThemeProvider* pTheme,
                   const CFX_Matrix* pMatrix = nullptr);
   void DrawEdge(CFX_Graphics* pGraphics,
                 CFWL_Part iPartEdge,
                 IFWL_ThemeProvider* pTheme,
                 const CFX_Matrix* pMatrix = nullptr);
   void NotifyDriver();
 
   FX_BOOL IsParent(IFWL_Widget* pParent);
 
+  void SetDelegate(std::unique_ptr<IFWL_WidgetDelegate> delegate) {
+    m_pDelegate = std::move(delegate);
+  }
+  IFWL_WidgetDelegate* GetDelegate() const { return m_pDelegate.get(); }
+
   const IFWL_App* const m_pOwnerApp;
   CFWL_WidgetMgr* const m_pWidgetMgr;
   std::unique_ptr<CFWL_WidgetImpProperties> m_pProperties;
-  IFWL_WidgetDelegate* m_pDelegate;
-  IFWL_WidgetDelegate* m_pCurDelegate;
+  IFWL_WidgetDelegate* m_pCurDelegate;  // Not owned.
   IFWL_Widget* m_pOuter;
   void* m_pLayoutItem;
   CFWL_Widget* m_pAssociate;
   int32_t m_iLock;
   uint32_t m_nEventKey;
+
+ private:
+  std::unique_ptr<IFWL_WidgetDelegate> m_pDelegate;
 };
 
 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 = nullptr) override;
 };
 
 #endif  // XFA_FWL_CORE_IFWL_WIDGET_H_