Merge delegates into IFWL_* classes.

xfa/fwl/core/ifwl_scrollbar.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_SCROLLBAR_H_
 #define XFA_FWL_CORE_IFWL_SCROLLBAR_H_
 
 #include "core/fxcrt/fx_system.h"
 #include "xfa/fwl/core/cfwl_widgetimpproperties.h"
 #include "xfa/fwl/core/fwl_error.h"
 #include "xfa/fwl/core/ifwl_dataprovider.h"
 #include "xfa/fwl/core/ifwl_timer.h"
 #include "xfa/fwl/core/ifwl_widget.h"
 
-class CFWL_ScrollBarImpDelegate;
 class CFWL_WidgetImpProperties;
 class IFWL_Widget;
 
 #define FWL_STYLEEXT_SCB_Horz (0L << 0)
 #define FWL_STYLEEXT_SCB_Vert (1L << 0)
 
 enum FWL_SCBCODE {
   FWL_SCBCODE_None = 1,
   FWL_SCBCODE_Min,
   FWL_SCBCODE_Max,
@@ skipping 14 matching lines @@
                  const CFWL_WidgetImpProperties& properties,
                  IFWL_Widget* pOuter);
   ~IFWL_ScrollBar() override;
 
   // IFWL_Widget
   FWL_Type GetClassID() const override;
   FWL_Error GetWidgetRect(CFX_RectF& rect, FX_BOOL bAutoSize = FALSE) override;
   FWL_Error Update() override;
   FWL_Error DrawWidget(CFX_Graphics* pGraphics,
                        const CFX_Matrix* pMatrix = nullptr) override;
+  void OnProcessMessage(CFWL_Message* pMessage) override;
+  void OnDrawWidget(CFX_Graphics* pGraphics,
+                    const CFX_Matrix* pMatrix) override;
 
   FX_BOOL IsVertical();
   FWL_Error GetRange(FX_FLOAT& fMin, FX_FLOAT& fMax);
   FWL_Error SetRange(FX_FLOAT fMin, FX_FLOAT fMax);
   FX_FLOAT GetPageSize();
   FWL_Error SetPageSize(FX_FLOAT fPageSize);
   FX_FLOAT GetStepSize();
   FWL_Error SetStepSize(FX_FLOAT fStepSize);
   FX_FLOAT GetPos();
   FWL_Error SetPos(FX_FLOAT fPos);
   FX_FLOAT GetTrackPos();
   FWL_Error SetTrackPos(FX_FLOAT fTrackPos);
   FX_BOOL DoScroll(uint32_t dwCode, FX_FLOAT fPos = 0.0f);
   FWL_Error SetOuter(IFWL_Widget* pOuter);
 
  protected:
-  friend class CFWL_ScrollBarImpDelegate;
-
   class Timer : public IFWL_Timer {
    public:
     explicit Timer(IFWL_ScrollBar* pToolTip);
     ~Timer() override {}
 
     void Run(IFWL_TimerInfo* pTimerInfo) override;
   };
   friend class IFWL_ScrollBar::Timer;
 
   IFWL_ScrollBar();
@@ skipping 44 matching lines @@
   FX_BOOL m_bMinSize;
   CFX_RectF m_rtClient;
   CFX_RectF m_rtThumb;
   CFX_RectF m_rtMinBtn;
   CFX_RectF m_rtMaxBtn;
   CFX_RectF m_rtMinTrack;
   CFX_RectF m_rtMaxTrack;
   bool m_bCustomLayout;
   FX_FLOAT m_fMinThumb;
   IFWL_ScrollBar::Timer m_Timer;
-};
 
-class CFWL_ScrollBarImpDelegate : public CFWL_WidgetImpDelegate {
- public:
-  CFWL_ScrollBarImpDelegate(IFWL_ScrollBar* pOwner);
-  void OnProcessMessage(CFWL_Message* pMessage) override;
-  void OnDrawWidget(CFX_Graphics* pGraphics,
-                    const CFX_Matrix* pMatrix = nullptr) override;
-
- protected:
+ private:
   void OnLButtonDown(uint32_t dwFlags, FX_FLOAT fx, FX_FLOAT fy);
   void OnLButtonUp(uint32_t dwFlags, FX_FLOAT fx, FX_FLOAT fy);
   void OnMouseMove(uint32_t dwFlags, FX_FLOAT fx, FX_FLOAT fy);
   void OnMouseLeave();
   void OnMouseWheel(FX_FLOAT fx,
                     FX_FLOAT fy,
                     uint32_t dwFlags,
                     FX_FLOAT fDeltaX,
                     FX_FLOAT fDeltaY);
   void DoMouseDown(int32_t iItem,
                    const CFX_RectF& rtItem,
                    int32_t& iState,
                    FX_FLOAT fx,
                    FX_FLOAT fy);
   void DoMouseUp(int32_t iItem,
                  const CFX_RectF& rtItem,
                  int32_t& iState,
                  FX_FLOAT fx,
                  FX_FLOAT fy);
   void DoMouseMove(int32_t iItem,
                    const CFX_RectF& rtItem,
                    int32_t& iState,
                    FX_FLOAT fx,
                    FX_FLOAT fy);
   void DoMouseLeave(int32_t iItem, const CFX_RectF& rtItem, int32_t& iState);
   void DoMouseHover(int32_t iItem, const CFX_RectF& rtItem, int32_t& iState);
-
-  IFWL_ScrollBar* m_pOwner;
 };
 
 #endif  // XFA_FWL_CORE_IFWL_SCROLLBAR_H_