Cleanup IFWL_Widget visibility and virtual parameters

xfa/fwl/core/ifwl_datetimepicker.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_DATETIMEPICKER_H_
 #define XFA_FWL_CORE_IFWL_DATETIMEPICKER_H_
 
 #include "xfa/fwl/core/cfwl_event.h"
@@ skipping 51 matching lines @@
 
 class IFWL_DateTimePicker : public IFWL_Widget, public IFWL_MonthCalendarDP {
  public:
   explicit IFWL_DateTimePicker(
       const IFWL_App* app,
       std::unique_ptr<CFWL_WidgetProperties> properties);
   ~IFWL_DateTimePicker() override;
 
   // IFWL_Widget
   FWL_Type GetClassID() const override;
-  FWL_Error GetWidgetRect(CFX_RectF& rect, bool bAutoSize = false) override;
-  FWL_Error Update() override;
+  void GetWidgetRect(CFX_RectF& rect, bool bAutoSize = false) override;
+  void Update() override;
   FWL_WidgetHit HitTest(FX_FLOAT fx, FX_FLOAT fy) override;
-  FWL_Error DrawWidget(CFX_Graphics* pGraphics,
-                       const CFX_Matrix* pMatrix = nullptr) override;
-  FWL_Error SetThemeProvider(IFWL_ThemeProvider* pTP) override;
+  void DrawWidget(CFX_Graphics* pGraphics,
+                  const CFX_Matrix* pMatrix = nullptr) override;
+  void SetThemeProvider(IFWL_ThemeProvider* pTP) override;
   void OnProcessMessage(CFWL_Message* pMessage) override;
   void OnDrawWidget(CFX_Graphics* pGraphics,
                     const CFX_Matrix* pMatrix) override;
 
   FWL_Error GetCurSel(int32_t& iYear, int32_t& iMonth, int32_t& iDay);
   FWL_Error SetCurSel(int32_t iYear, int32_t iMonth, int32_t iDay);
   FWL_Error SetEditText(const CFX_WideString& wsText);
   FWL_Error GetEditText(CFX_WideString& wsText,
                         int32_t nStart = 0,
                         int32_t nCount = -1) const;
   int32_t CountSelRanges();
   int32_t GetSelRange(int32_t nIndex, int32_t& nStart);
 
   bool CanUndo();
   bool CanRedo();
   bool Undo();
   bool Redo();
   bool CanCopy();
   bool CanCut();
   bool CanSelectAll();
   bool Copy(CFX_WideString& wsCopy);
   bool Cut(CFX_WideString& wsCut);
   bool Paste(const CFX_WideString& wsPaste);
   bool SelectAll();
   bool Delete();
   bool DeSelect();
   FWL_Error GetBBox(CFX_RectF& rect);
   FWL_Error SetEditLimit(int32_t nLimit);
-  FWL_Error ModifyEditStylesEx(uint32_t dwStylesExAdded,
-                               uint32_t dwStylesExRemoved);
+  void ModifyEditStylesEx(uint32_t dwStylesExAdded, uint32_t dwStylesExRemoved);
   IFWL_DateTimeEdit* GetDataTimeEdit();
 
   bool IsMonthCalendarShowed();
   void ShowMonthCalendar(bool bActivate);
   void ProcessSelChanged(int32_t iYear, int32_t iMonth, int32_t iDay);
 
   IFWL_FormProxy* GetFormProxy() const { return m_pForm.get(); }
 
   // IFWL_DataProvider
   FWL_Error GetCaption(IFWL_Widget* pWidget,
@@ skipping 28 matching lines @@
   FX_FLOAT m_fBtn;
 
  private:
   FWL_Error DisForm_Initialize();
   void DisForm_InitDateTimeCalendar();
   void DisForm_InitDateTimeEdit();
   bool DisForm_IsMonthCalendarShowed();
   void DisForm_ShowMonthCalendar(bool bActivate);
   FWL_WidgetHit DisForm_HitTest(FX_FLOAT fx, FX_FLOAT fy);
   bool DisForm_IsNeedShowButton();
-  FWL_Error DisForm_Update();
-  FWL_Error DisForm_GetWidgetRect(CFX_RectF& rect, bool bAutoSize = false);
+  void DisForm_Update();
+  void DisForm_GetWidgetRect(CFX_RectF& rect, bool bAutoSize = false);
   FWL_Error DisForm_GetBBox(CFX_RectF& rect);
-  FWL_Error DisForm_DrawWidget(CFX_Graphics* pGraphics,
-                               const CFX_Matrix* pMatrix = nullptr);
+  void DisForm_DrawWidget(CFX_Graphics* pGraphics,
+                          const CFX_Matrix* pMatrix = nullptr);
 
   void OnFocusChanged(CFWL_Message* pMsg, bool bSet);
   void OnLButtonDown(CFWL_MsgMouse* pMsg);
   void OnLButtonUp(CFWL_MsgMouse* pMsg);
   void OnMouseMove(CFWL_MsgMouse* pMsg);
   void OnMouseLeave(CFWL_MsgMouse* pMsg);
   void DisForm_OnFocusChanged(CFWL_Message* pMsg, bool bSet);
 
   int32_t m_iCurYear;
   int32_t m_iCurMonth;
   int32_t m_iCurDay;
 };
 
 #endif  // XFA_FWL_CORE_IFWL_DATETIMEPICKER_H_