Remove DataProvider from CFWL_WidgetProperties

xfa/fwl/core/ifwl_checkbox.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_CHECKBOX_H_
 #define XFA_FWL_CORE_IFWL_CHECKBOX_H_
 
 #include <memory>
@@ skipping 32 matching lines @@
 #define FWL_STATE_CKB_Checked (1 << (FWL_WGTSTATE_MAX + 2))
 #define FWL_STATE_CKB_Neutral (2 << (FWL_WGTSTATE_MAX + 2))
 #define FWL_STATE_CKB_CheckMask (3L << (FWL_WGTSTATE_MAX + 2))
 
 class CFWL_MsgMouse;
 class CFWL_WidgetProperties;
 class IFWL_Widget;
 
 class IFWL_CheckBox : public IFWL_Widget {
  public:
-  class DataProvider : public IFWL_Widget::DataProvider {
+  class DataProvider {
    public:
     virtual FX_FLOAT GetBoxSize(IFWL_Widget* pWidget) = 0;
   };
 
   IFWL_CheckBox(const CFWL_App* app,
                 std::unique_ptr<CFWL_WidgetProperties> properties);
   ~IFWL_CheckBox() override;
 
   // IFWL_Widget
   FWL_Type GetClassID() const override;
   void GetWidgetRect(CFX_RectF& rect, bool bAutoSize = false) override;
   void Update() override;
   void 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;
 
+  void SetDataProvider(IFWL_CheckBox::DataProvider* pProvider) {
+    m_pDataProvider = pProvider;
+  }
+
  private:
   void SetCheckState(int32_t iCheck);
   void Layout();
   uint32_t GetPartStates() const;
   void UpdateTextOutStyles();
   void NextStates();
   void OnFocusChanged(bool bSet);
   void OnLButtonDown();
   void OnLButtonUp(CFWL_MsgMouse* pMsg);
   void OnMouseMove(CFWL_MsgMouse* pMsg);
   void OnMouseLeave();
   void OnKeyDown(CFWL_MsgKey* pMsg);
 
+  IFWL_CheckBox::DataProvider* m_pDataProvider;  // Not owned.
   CFX_RectF m_rtClient;
   CFX_RectF m_rtBox;
   CFX_RectF m_rtCaption;
   CFX_RectF m_rtFocus;
   uint32_t m_dwTTOStyles;
   int32_t m_iTTOAlign;
   bool m_bBtnDown;
 };
 
 #endif  // XFA_FWL_CORE_IFWL_CHECKBOX_H_