Convert FWL_ERR into an enum class.

xfa/fwl/core/fwl_widgetmgrimp.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_WIDGETMGRIMP_H_
 #define XFA_FWL_CORE_FWL_WIDGETMGRIMP_H_
 
 #include "core/fxcrt/include/fx_system.h"
@@ skipping 53 matching lines @@
   CFWL_WidgetMgr(CXFA_FFApp* pAdapterNative);
   ~CFWL_WidgetMgr() override;
 
   // IFWL_WidgetMgr:
   int32_t CountWidgets(IFWL_Widget* pParent = NULL) override;
   IFWL_Widget* GetWidget(int32_t nIndex, IFWL_Widget* pParent = NULL) override;
   IFWL_Widget* GetWidget(IFWL_Widget* pWidget,
                          FWL_WGTRELATION eRelation) override;
   int32_t GetWidgetIndex(IFWL_Widget* pWidget) override;
   FX_BOOL SetWidgetIndex(IFWL_Widget* pWidget, int32_t nIndex) override;
-  FWL_ERR RepaintWidget(IFWL_Widget* pWidget,
-                        const CFX_RectF* pRect = NULL) override;
+  FWL_Error RepaintWidget(IFWL_Widget* pWidget,
+                          const CFX_RectF* pRect = NULL) override;
   uint32_t GetCapability() override { return m_dwCapability; }
 
   void AddWidget(IFWL_Widget* pWidget);
   void InsertWidget(IFWL_Widget* pParent,
                     IFWL_Widget* pChild,
                     int32_t nIndex = -1);
   void RemoveWidget(IFWL_Widget* pWidget);
   void SetOwner(IFWL_Widget* pOwner, IFWL_Widget* pOwned);
   void SetParent(IFWL_Widget* pParent, IFWL_Widget* pChild);
   FX_BOOL IsChild(IFWL_Widget* pChild, IFWL_Widget* pParent);
-  FWL_ERR SetWidgetRect_Native(IFWL_Widget* pWidget, const CFX_RectF& rect);
+  FWL_Error SetWidgetRect_Native(IFWL_Widget* pWidget, const CFX_RectF& rect);
   IFWL_Widget* GetWidgetAtPoint(IFWL_Widget* pParent, FX_FLOAT fx, FX_FLOAT fy);
   void NotifySizeChanged(IFWL_Widget* pForm, FX_FLOAT fx, FX_FLOAT fy);
   IFWL_Widget* nextTab(IFWL_Widget* parent, IFWL_Widget* focus, FX_BOOL& bFind);
   int32_t CountRadioButtonGroup(IFWL_Widget* pFirst);
   IFWL_Widget* GetSiblingRadioButton(IFWL_Widget* pWidget, FX_BOOL bNext);
   IFWL_Widget* GetRadioButtonGroupHeader(IFWL_Widget* pRadioButton);
   void GetSameGroupRadioButton(IFWL_Widget* pRadioButton,
                                CFX_ArrayTemplate<IFWL_Widget*>& group);
   IFWL_Widget* GetDefaultButton(IFWL_Widget* pParent);
   void AddRedrawCounts(IFWL_Widget* pWidget);
@@ skipping 23 matching lines @@
 #if (_FX_OS_ == _FX_WIN32_DESKTOP_) || (_FX_OS_ == _FX_WIN64_)
   CFX_RectF m_rtScreen;
 #endif
 };
 
 class CFWL_WidgetMgrDelegate {
  public:
   CFWL_WidgetMgrDelegate(CFWL_WidgetMgr* pWidgetMgr);
   ~CFWL_WidgetMgrDelegate() {}
 
-  FWL_ERR OnSetCapability(uint32_t dwCapability = FWL_WGTMGR_DisableThread);
-  int32_t OnProcessMessageToForm(CFWL_Message* pMessage);
-  FWL_ERR OnDrawWidget(IFWL_Widget* pWidget,
-                       CFX_Graphics* pGraphics,
-                       const CFX_Matrix* pMatrix);
+  FWL_Error OnSetCapability(uint32_t dwCapability = FWL_WGTMGR_DisableThread);
+  void OnProcessMessageToForm(CFWL_Message* pMessage);
+  void OnDrawWidget(IFWL_Widget* pWidget,
+                    CFX_Graphics* pGraphics,
+                    const CFX_Matrix* pMatrix);
 
  protected:
   void DrawChild(IFWL_Widget* pParent,
                  const CFX_RectF& rtClip,
                  CFX_Graphics* pGraphics,
                  const CFX_Matrix* pMatrix);
   CFX_Graphics* DrawWidgetBefore(IFWL_Widget* pWidget,
                                  CFX_Graphics* pGraphics,
                                  const CFX_Matrix* pMatrix);
   void DrawWidgetAfter(IFWL_Widget* pWidget,
                        CFX_Graphics* pGraphics,
                        CFX_RectF& rtClip,
                        const CFX_Matrix* pMatrix);
   FX_BOOL IsNeedRepaint(IFWL_Widget* pWidget,
                         CFX_Matrix* pMatrix,
                         const CFX_RectF& rtDirty);
   FX_BOOL bUseOffscreenDirect(IFWL_Widget* pWidget);
 
   CFWL_WidgetMgr* m_pWidgetMgr;
 };
 
 #endif  // XFA_FWL_CORE_FWL_WIDGETMGRIMP_H_