Convert FWL_ERR into an enum class.

xfa/fwl/basewidget/fwl_comboboximp.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_BASEWIDGET_FWL_COMBOBOXIMP_H_
 #define XFA_FWL_BASEWIDGET_FWL_COMBOBOXIMP_H_
 
 #include <memory>
@@ skipping 26 matching lines @@
   void FlagFocus(FX_BOOL bSet);
 
  protected:
   void SetComboBoxFocus(FX_BOOL bSet);
   CFWL_ComboBoxImp* m_pOuter;
   friend class CFWL_ComboEditImpDelegate;
 };
 class CFWL_ComboEditImpDelegate : public CFWL_EditImpDelegate {
  public:
   CFWL_ComboEditImpDelegate(CFWL_ComboEditImp* pOwner);
-  int32_t OnProcessMessage(CFWL_Message* pMessage) override;
+  void OnProcessMessage(CFWL_Message* pMessage) override;
 
  protected:
   CFWL_ComboEditImp* m_pOwner;
 };
 class CFWL_ComboListImp : public CFWL_ListBoxImp {
  public:
   CFWL_ComboListImp(const CFWL_WidgetImpProperties& properties,
                     IFWL_Widget* pOuter);
-  virtual FWL_ERR Initialize();
-  virtual FWL_ERR Finalize();
+  virtual FWL_Error Initialize();
+  virtual FWL_Error Finalize();
   int32_t MatchItem(const CFX_WideString& wsMatch);
   void ChangeSelected(int32_t iSel);
   int32_t CountItems();
   void GetItemRect(int32_t nIndex, CFX_RectF& rtItem);
   void ClientToOuter(FX_FLOAT& fx, FX_FLOAT& fy);
   void SetFocus(FX_BOOL bSet);
   FX_BOOL m_bNotifyOwner;
   friend class CFWL_ComboListImpDelegate;
   friend class CFWL_ComboBoxImp;
 };
 class CFWL_ComboListImpDelegate : public CFWL_ListBoxImpDelegate {
  public:
   CFWL_ComboListImpDelegate(CFWL_ComboListImp* pOwner);
-  int32_t OnProcessMessage(CFWL_Message* pMessage) override;
+  void OnProcessMessage(CFWL_Message* pMessage) override;
 
  protected:
   void OnDropListFocusChanged(CFWL_Message* pMsg, FX_BOOL bSet = TRUE);
   int32_t OnDropListMouseMove(CFWL_MsgMouse* pMsg);
   int32_t OnDropListLButtonDown(CFWL_MsgMouse* pMsg);
   int32_t OnDropListLButtonUp(CFWL_MsgMouse* pMsg);
   int32_t OnDropListKey(CFWL_MsgKey* pKey);
   void OnDropListKeyDown(CFWL_MsgKey* pKey);
   CFWL_ComboListImp* m_pOwner;
 };
 class CFWL_ComboBoxImp : public CFWL_WidgetImp {
  public:
   CFWL_ComboBoxImp(const CFWL_WidgetImpProperties& properties,
                    IFWL_Widget* pOuter);
   virtual ~CFWL_ComboBoxImp();
-  virtual FWL_ERR GetClassName(CFX_WideString& wsClass) const;
+  virtual FWL_Error GetClassName(CFX_WideString& wsClass) const;
   virtual uint32_t GetClassID() const;
-  virtual FWL_ERR Initialize();
-  virtual FWL_ERR Finalize();
-  virtual FWL_ERR GetWidgetRect(CFX_RectF& rect, FX_BOOL bAutoSize = FALSE);
-  virtual FWL_ERR ModifyStylesEx(uint32_t dwStylesExAdded,
-                                 uint32_t dwStylesExRemoved);
-  virtual FWL_ERR SetStates(uint32_t dwStates, FX_BOOL bSet = TRUE);
-  virtual FWL_ERR Update();
+  virtual FWL_Error Initialize();
+  virtual FWL_Error Finalize();
+  virtual FWL_Error GetWidgetRect(CFX_RectF& rect, FX_BOOL bAutoSize = FALSE);
+  virtual FWL_Error ModifyStylesEx(uint32_t dwStylesExAdded,
+                                   uint32_t dwStylesExRemoved);
+  virtual FWL_Error SetStates(uint32_t dwStates, FX_BOOL bSet = TRUE);
+  virtual FWL_Error Update();
   virtual FWL_WidgetHit HitTest(FX_FLOAT fx, FX_FLOAT fy);
-  virtual FWL_ERR DrawWidget(CFX_Graphics* pGraphics,
-                             const CFX_Matrix* pMatrix = NULL);
-  virtual FWL_ERR SetThemeProvider(IFWL_ThemeProvider* pThemeProvider);
+  virtual FWL_Error DrawWidget(CFX_Graphics* pGraphics,
+                               const CFX_Matrix* pMatrix = NULL);
+  virtual FWL_Error SetThemeProvider(IFWL_ThemeProvider* pThemeProvider);
   virtual int32_t GetCurSel();
-  virtual FWL_ERR SetCurSel(int32_t iSel);
-  virtual FWL_ERR SetEditText(const CFX_WideString& wsText);
+  virtual FWL_Error SetCurSel(int32_t iSel);
+  virtual FWL_Error SetEditText(const CFX_WideString& wsText);
   virtual int32_t GetEditTextLength() const;
-  virtual FWL_ERR GetEditText(CFX_WideString& wsText,
-                              int32_t nStart = 0,
-                              int32_t nCount = -1) const;
-  virtual FWL_ERR SetEditSelRange(int32_t nStart, int32_t nCount = -1);
+  virtual FWL_Error GetEditText(CFX_WideString& wsText,
+                                int32_t nStart = 0,
+                                int32_t nCount = -1) const;
+  virtual FWL_Error SetEditSelRange(int32_t nStart, int32_t nCount = -1);
   virtual int32_t GetEditSelRange(int32_t nIndex, int32_t& nStart);
   virtual int32_t GetEditLimit();
-  virtual FWL_ERR SetEditLimit(int32_t nLimit);
-  virtual FWL_ERR EditDoClipboard(int32_t iCmd);
+  virtual FWL_Error SetEditLimit(int32_t nLimit);
+  virtual FWL_Error EditDoClipboard(int32_t iCmd);
   virtual FX_BOOL EditRedo(const CFX_ByteStringC& bsRecord);
   virtual FX_BOOL EditUndo(const CFX_ByteStringC& bsRecord);
   virtual IFWL_ListBox* GetListBoxt();
   virtual FX_BOOL AfterFocusShowDropList();
-  virtual FX_ERR OpenDropDownList(FX_BOOL bActivate);
+  virtual FWL_Error OpenDropDownList(FX_BOOL bActivate);
   virtual FX_BOOL EditCanUndo();
   virtual FX_BOOL EditCanRedo();
   virtual FX_BOOL EditUndo();
   virtual FX_BOOL EditRedo();
   virtual FX_BOOL EditCanCopy();
   virtual FX_BOOL EditCanCut();
   virtual FX_BOOL EditCanSelectAll();
   virtual FX_BOOL EditCopy(CFX_WideString& wsCopy);
   virtual FX_BOOL EditCut(CFX_WideString& wsCut);
   virtual FX_BOOL EditPaste(const CFX_WideString& wsPaste);
   virtual FX_BOOL EditSelectAll();
   virtual FX_BOOL EditDelete();
   virtual FX_BOOL EditDeSelect();
-  virtual FWL_ERR GetBBox(CFX_RectF& rect);
-  virtual FWL_ERR EditModifyStylesEx(uint32_t dwStylesExAdded,
-                                     uint32_t dwStylesExRemoved);
+  virtual FWL_Error GetBBox(CFX_RectF& rect);
+  virtual FWL_Error EditModifyStylesEx(uint32_t dwStylesExAdded,
+                                       uint32_t dwStylesExRemoved);
 
  protected:
   void DrawStretchHandler(CFX_Graphics* pGraphics, const CFX_Matrix* pMatrix);
   FX_FLOAT GetListHeight();
   void ShowDropList(FX_BOOL bActivate);
   FX_BOOL IsDropListShowed();
   FX_BOOL IsDropDownStyle() const;
   void MatchEditText();
   void SynchrEditText(int32_t iListItem);
   void Layout();
   void ReSetTheme();
   void ReSetEditAlignment();
   void ReSetListItemAlignment();
   void ProcessSelChanged(FX_BOOL bLButtonUp);
   void InitProxyForm();
-  FWL_ERR DisForm_Initialize();
+  FWL_Error DisForm_Initialize();
   void DisForm_InitComboList();
   void DisForm_InitComboEdit();
   void DisForm_ShowDropList(FX_BOOL bActivate);
   FX_BOOL DisForm_IsDropListShowed();
-  FWL_ERR DisForm_ModifyStylesEx(uint32_t dwStylesExAdded,
-                                 uint32_t dwStylesExRemoved);
-  FWL_ERR DisForm_Update();
+  FWL_Error DisForm_ModifyStylesEx(uint32_t dwStylesExAdded,
+                                   uint32_t dwStylesExRemoved);
+  FWL_Error DisForm_Update();
   FWL_WidgetHit DisForm_HitTest(FX_FLOAT fx, FX_FLOAT fy);
-  FWL_ERR DisForm_DrawWidget(CFX_Graphics* pGraphics,
-                             const CFX_Matrix* pMatrix = NULL);
-  FWL_ERR DisForm_GetBBox(CFX_RectF& rect);
+  FWL_Error DisForm_DrawWidget(CFX_Graphics* pGraphics,
+                               const CFX_Matrix* pMatrix = NULL);
+  FWL_Error DisForm_GetBBox(CFX_RectF& rect);
   void DisForm_Layout();
 
   CFX_RectF m_rtClient;
   CFX_RectF m_rtContent;
   CFX_RectF m_rtBtn;
   CFX_RectF m_rtList;
   CFX_RectF m_rtProxy;
   CFX_RectF m_rtHandler;
   std::unique_ptr<IFWL_Edit> m_pEdit;
   std::unique_ptr<IFWL_ListBox> m_pListBox;
@@ skipping 11 matching lines @@
   friend class CFWL_ComboListImp;
   friend class CFWL_ComboEditImp;
   friend class CFWL_ComboEditImpDelegate;
   friend class CFWL_ComboListImpDelegate;
   friend class CFWL_ComboBoxImpDelegate;
   friend class CFWL_ComboProxyImpDelegate;
 };
 class CFWL_ComboBoxImpDelegate : public CFWL_WidgetImpDelegate {
  public:
   CFWL_ComboBoxImpDelegate(CFWL_ComboBoxImp* pOwner);
-  int32_t OnProcessMessage(CFWL_Message* pMessage) override;
-  FWL_ERR OnProcessEvent(CFWL_Event* pEvent) override;
-  FWL_ERR OnDrawWidget(CFX_Graphics* pGraphics,
-                       const CFX_Matrix* pMatrix = NULL) override;
+  void OnProcessMessage(CFWL_Message* pMessage) override;
+  void OnProcessEvent(CFWL_Event* pEvent) override;
+  void OnDrawWidget(CFX_Graphics* pGraphics,
+                    const CFX_Matrix* pMatrix = NULL) override;
 
  protected:
   void OnFocusChanged(CFWL_Message* pMsg, FX_BOOL bSet = TRUE);
   void OnLButtonDown(CFWL_MsgMouse* pMsg);
   void OnLButtonUp(CFWL_MsgMouse* pMsg);
   void OnMouseMove(CFWL_MsgMouse* pMsg);
   void OnMouseLeave(CFWL_MsgMouse* pMsg);
   void OnKey(CFWL_MsgKey* pMsg);
   void DoSubCtrlKey(CFWL_MsgKey* pMsg);
 
  protected:
-  int32_t DisForm_OnProcessMessage(CFWL_Message* pMessage);
+  void DisForm_OnProcessMessage(CFWL_Message* pMessage);
   void DisForm_OnLButtonDown(CFWL_MsgMouse* pMsg);
   void DisForm_OnFocusChanged(CFWL_Message* pMsg, FX_BOOL bSet = TRUE);
   void DisForm_OnKey(CFWL_MsgKey* pMsg);
 
  protected:
   CFWL_ComboBoxImp* m_pOwner;
   friend class CFWL_ComboEditImpDelegate;
   friend class CFWL_ComboListImpDelegate;
 };
 class CFWL_ComboProxyImpDelegate : public CFWL_WidgetImpDelegate {
  public:
   CFWL_ComboProxyImpDelegate(IFWL_Form* pForm, CFWL_ComboBoxImp* pComboBox);
-  int32_t OnProcessMessage(CFWL_Message* pMessage) override;
-  FWL_ERR OnDrawWidget(CFX_Graphics* pGraphics,
-                       const CFX_Matrix* pMatrix = NULL) override;
+  void OnProcessMessage(CFWL_Message* pMessage) override;
+  void OnDrawWidget(CFX_Graphics* pGraphics,
+                    const CFX_Matrix* pMatrix = NULL) override;
   void Reset() { m_bLButtonUpSelf = FALSE; }
 
  protected:
   void OnLButtonDown(CFWL_MsgMouse* pMsg);
   void OnLButtonUp(CFWL_MsgMouse* pMsg);
   void OnMouseMove(CFWL_MsgMouse* pMsg);
   void OnDeactive(CFWL_MsgDeactivate* pMsg);
   void OnFocusChanged(CFWL_MsgKillFocus* pMsg, FX_BOOL bSet);
   FX_BOOL m_bLButtonDown;
   FX_BOOL m_bLButtonUpSelf;
   FX_FLOAT m_fStartPos;
   IFWL_Form* m_pForm;
   CFWL_ComboBoxImp* m_pComboBox;
 };
 
 #endif  // XFA_FWL_BASEWIDGET_FWL_COMBOBOXIMP_H_