Remove IFWL_CombobBox::DataProvider

xfa/fwl/core/ifwl_combobox.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_COMBOBOX_H_
 #define XFA_FWL_CORE_IFWL_COMBOBOX_H_
 
 #include <memory>
@@ skipping 31 matching lines @@
 #define FWL_STYLEEXT_CMB_ListItemLeftAlign (0L << 10)
 #define FWL_STYLEEXT_CMB_ListItemCenterAlign (1L << 10)
 #define FWL_STYLEEXT_CMB_ListItemRightAlign (2L << 10)
 #define FWL_STYLEEXT_CMB_ListItemAlignMask (3L << 10)
 #define FWL_STYLEEXT_CMB_ListItemText (0L << 12)
 #define FWL_STYLEEXT_CMB_ListItemIconText (1L << 12)
 #define FWL_STYLEEXT_CMB_ReadOnly (1L << 13)
 
 class IFWL_ComboBox : public IFWL_Widget {
  public:
-  class DataProvider : public IFWL_Widget::DataProvider {
-   public:
-    virtual FX_FLOAT GetListHeight(IFWL_Widget* pWidget) = 0;
-  };
-
   explicit IFWL_ComboBox(const CFWL_App* app,
                          std::unique_ptr<CFWL_WidgetProperties> properties);
   ~IFWL_ComboBox() override;
 
   // IFWL_Widget
   FWL_Type GetClassID() const override;
   void GetWidgetRect(CFX_RectF& rect, bool bAutoSize = false) override;
   void ModifyStylesEx(uint32_t dwStylesExAdded,
                       uint32_t dwStylesExRemoved) override;
   void SetStates(uint32_t dwStates, bool bSet = true) override;
@@ skipping 51 matching lines @@
            !(m_pComboBoxProxy->GetStates() & FWL_WGTSTATE_Invisible);
   }
   void ShowDropList(bool bActivate);
 
   IFWL_ComboEdit* GetComboEdit() const { return m_pEdit.get(); }
 
   void ProcessSelChanged(bool bLButtonUp);
   int32_t GetCurrentSelection() const { return m_iCurSel; }
 
  private:
-  FX_FLOAT GetDataProviderListHeight();
   bool IsDropDownStyle() const {
     return !!(m_pProperties->m_dwStyleExes & FWL_STYLEEXT_CMB_DropDown);
   }
   void MatchEditText();
   void SyncEditText(int32_t iListItem);
   void Layout();
   void ResetTheme();
   void ResetEditAlignment();
   void ResetListItemAlignment();
   void InitProxyForm();
@@ skipping 34 matching lines @@
   IFWL_ComboBoxProxy* m_pComboBoxProxy;  // Can this be a unique_ptr?
   bool m_bLButtonDown;
   bool m_bUpFormHandler;
   int32_t m_iCurSel;
   int32_t m_iBtnState;
   FX_FLOAT m_fComboFormHandler;
   FX_FLOAT m_fItemHeight;
 };
 
 #endif  // XFA_FWL_CORE_IFWL_COMBOBOX_H_