Convert FWL_ERR into an enum class.

xfa/fwl/core/fwl_noteimp.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_FWL_NOTEIMP_H_
 #define XFA_FWL_CORE_FWL_NOTEIMP_H_
 
 #include "xfa/fwl/core/cfwl_event.h"
@@ skipping 26 matching lines @@
 class CFWL_TargetImp;
 class CFWL_ToolTipImp;
 class CFWL_WidgetImp;
 class IFWL_ToolTipTarget;
 
 class CFWL_NoteLoop {
  public:
   CFWL_NoteLoop(CFWL_WidgetImp* pForm = nullptr);
   ~CFWL_NoteLoop() {}
 
-  FWL_ERR Idle(int32_t count);
+  FWL_Error Idle(int32_t count);
   CFWL_WidgetImp* GetForm();
   FX_BOOL ContinueModal();
-  FWL_ERR EndModalLoop();
-  FWL_ERR SetMainForm(CFWL_WidgetImp* pForm);
+  FWL_Error EndModalLoop();
+  FWL_Error SetMainForm(CFWL_WidgetImp* pForm);
 
  protected:
   void GenerateCommondEvent(uint32_t dwCommand);
 
   CFWL_WidgetImp* m_pForm;
   FX_BOOL m_bContinueModal;
 };
 
 class CFWL_NoteDriver {
  public:
   CFWL_NoteDriver();
   ~CFWL_NoteDriver();
 
   FX_BOOL SendEvent(CFWL_Event* pNote);
-  FWL_ERR RegisterEventTarget(IFWL_Widget* pListener,
-                              IFWL_Widget* pEventSource = nullptr,
-                              uint32_t dwFilter = FWL_EVENT_ALL_MASK);
-  FWL_ERR UnregisterEventTarget(IFWL_Widget* pListener);
+  FWL_Error RegisterEventTarget(IFWL_Widget* pListener,
+                                IFWL_Widget* pEventSource = nullptr,
+                                uint32_t dwFilter = FWL_EVENT_ALL_MASK);
+  FWL_Error UnregisterEventTarget(IFWL_Widget* pListener);
   void ClearEventTargets(FX_BOOL bRemoveAll);
   IFWL_App* GetOwnerApp() const;
-  FWL_ERR PushNoteLoop(CFWL_NoteLoop* pNoteLoop);
+  FWL_Error PushNoteLoop(CFWL_NoteLoop* pNoteLoop);
   CFWL_NoteLoop* PopNoteLoop();
   IFWL_Widget* GetFocus();
   FX_BOOL SetFocus(IFWL_Widget* pFocus, FX_BOOL bNotify = FALSE);
   void SetGrab(IFWL_Widget* pGrab, FX_BOOL bSet);
-  FWL_ERR Run();
+  FWL_Error Run();
 
   IFWL_Widget* GetHover();
   void SetHover(IFWL_Widget* pHover);
   void NotifyTargetHide(IFWL_Widget* pNoteTarget);
   void NotifyTargetDestroy(IFWL_Widget* pNoteTarget);
-  FWL_ERR RegisterForm(CFWL_WidgetImp* pForm);
-  FWL_ERR UnRegisterForm(CFWL_WidgetImp* pForm);
+  FWL_Error RegisterForm(CFWL_WidgetImp* pForm);
+  FWL_Error UnRegisterForm(CFWL_WidgetImp* pForm);
   FX_BOOL QueueMessage(CFWL_Message* pMessage);
   FX_BOOL UnqueueMessage(CFWL_NoteLoop* pNoteLoop);
   CFWL_NoteLoop* GetTopLoop();
   int32_t CountLoop();
   FX_BOOL ProcessMessage(CFWL_Message* pMessage);
 
  protected:
   FX_BOOL DispatchMessage(CFWL_Message* pMessage, IFWL_Widget* pMessageForm);
   FX_BOOL DoActivate(CFWL_MsgActivate* pMsg, IFWL_Widget* pMessageForm);
   FX_BOOL DoDeactivate(CFWL_MsgDeactivate* pMsg, IFWL_Widget* pMessageForm);
@@ skipping 39 matching lines @@
   IFWL_Widget* m_pListener;
   CFWL_NoteDriver* m_pNoteDriver;
   FX_BOOL m_bInvalid;
 };
 
 class CFWL_ToolTipContainer {
  public:
   static CFWL_ToolTipContainer* getInstance();
   static void DeleteInstance();
 
-  FX_ERR AddToolTipTarget(IFWL_ToolTipTarget* pTarget);
-  FX_ERR RemoveToolTipTarget(IFWL_ToolTipTarget* pTarget);
+  FWL_Error AddToolTipTarget(IFWL_ToolTipTarget* pTarget);
+  FWL_Error RemoveToolTipTarget(IFWL_ToolTipTarget* pTarget);
   IFWL_ToolTipTarget* GetCurrentToolTipTarget();
 
   FX_BOOL HasToolTip(IFWL_Widget* pWidget);
 
   FX_BOOL ProcessEnter(CFWL_EvtMouse* pEvt, IFWL_Widget* pOwner);
   FX_BOOL ProcessLeave(CFWL_EvtMouse* pEvt);
 
  protected:
   CFWL_ToolTipContainer();
   virtual ~CFWL_ToolTipContainer();
 
   IFWL_ToolTipTarget* pCurTarget;
   CFWL_ToolTipImp* m_pToolTipImp;
   CFWL_CoreToolTipDP* m_ToolTipDp;
   CFX_ArrayTemplate<IFWL_ToolTipTarget*> m_arrWidget;
 
  private:
   static CFWL_ToolTipContainer* s_pInstance;
 };
 
 #endif  // XFA_FWL_CORE_FWL_NOTEIMP_H_