Cleanup unused methods and return values in FWL code.

xfa/fwl/lightwidget/cfwl_widget.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_LIGHTWIDGET_CFWL_WIDGET_H_
 #define XFA_FWL_LIGHTWIDGET_CFWL_WIDGET_H_
 
 #include <memory>
 
 #include "xfa/fwl/core/cfwl_event.h"
 #include "xfa/fwl/core/ifwl_widget.h"
 #include "xfa/fwl/lightwidget/cfwl_widgetproperties.h"
 
 class CFWL_Event;
 class CFWL_Message;
 class CFWL_Widget;
 class CFWL_WidgetDelegate;
 class CFWL_WidgetMgr;
 
 class CFWL_Widget {
  public:
+  CFWL_Widget();
   virtual ~CFWL_Widget();
 
   virtual IFWL_Widget* GetWidget();
   virtual const IFWL_Widget* GetWidget() const;
 
-  FWL_Error GetClassName(CFX_WideString& wsClass) const;
-  FWL_Type GetClassID() const;
-  virtual FX_BOOL IsInstance(const CFX_WideStringC& wsClass) const;
+  FWL_Error GetWidgetRect(CFX_RectF& rect, FX_BOOL bAutoSize = FALSE);
+  FWL_Error SetWidgetRect(const CFX_RectF& rect);
+  FWL_Error GetGlobalRect(CFX_RectF& rect);
+  FWL_Error GetClientRect(CFX_RectF& rtClient);
 
-  FWL_Error GetWidgetRect(CFX_RectF& rect, FX_BOOL bAutoSize = FALSE);
-  FWL_Error GetGlobalRect(CFX_RectF& rect);
-  FWL_Error SetWidgetRect(const CFX_RectF& rect);
-  FWL_Error GetClientRect(CFX_RectF& rtClient);
-  CFWL_Widget* GetParent();
-  FWL_Error SetParent(CFWL_Widget* pParent);
-  CFWL_Widget* GetOwner();
-  FWL_Error SetOwner(CFWL_Widget* pOwner);
-  uint32_t GetStyles();
   FWL_Error ModifyStyles(uint32_t dwStylesAdded, uint32_t dwStylesRemoved);
   uint32_t GetStylesEx();
   FWL_Error ModifyStylesEx(uint32_t dwStylesExAdded,
                            uint32_t dwStylesExRemoved);
+
   uint32_t GetStates();
   void SetStates(uint32_t dwStates, FX_BOOL bSet = TRUE);
-  void* GetLayoutItem() const;
+
   void SetLayoutItem(void* pItem);
 
-  FWL_Error SetPrivateData(void* module_id,
-                           void* pData,
-                           PD_CALLBACK_FREEDATA callback);
-  void* GetPrivateData(void* module_id);
-  FWL_Error Update();
-  FWL_Error LockUpdate();
-  FWL_Error UnlockUpdate();
+  void Update();
+  void LockUpdate();
+  void UnlockUpdate();
+
   FWL_WidgetHit HitTest(FX_FLOAT fx, FX_FLOAT fy);
-  FWL_Error TransformTo(CFWL_Widget* pWidget, FX_FLOAT& fx, FX_FLOAT& fy);
-  FWL_Error TransformTo(CFWL_Widget* pWidget, CFX_RectF& rt);
-  FWL_Error GetMatrix(CFX_Matrix& matrix, FX_BOOL bGlobal = FALSE);
-  FWL_Error SetMatrix(const CFX_Matrix& matrix);
+
   FWL_Error DrawWidget(CFX_Graphics* pGraphics,
                        const CFX_Matrix* pMatrix = nullptr);
+
   IFWL_WidgetDelegate* SetDelegate(IFWL_WidgetDelegate* pDelegate);
-  FWL_Error Repaint(const CFX_RectF* pRect = nullptr);
-  FWL_Error SetFocus(FX_BOOL bFocus);
-  FWL_Error SetGrab(FX_BOOL bSet);
-  CFWL_Widget();
-
-  void RegisterEventTarget(CFWL_Widget* pEventSource = nullptr,
-                           uint32_t dwFilter = FWL_EVENT_ALL_MASK);
-  void DispatchEvent(CFWL_Event* pEvent);
-  CFX_SizeF CalcTextSize(const CFX_WideString& wsText,
-                         FX_BOOL bMultiLine = FALSE,
-                         int32_t iLineWidth = -1);
 
  protected:
   FWL_Error Initialize(const CFWL_WidgetProperties* pProperties = nullptr);
 
   std::unique_ptr<IFWL_Widget> m_pIface;
   IFWL_WidgetDelegate* m_pDelegate;
   CFWL_WidgetMgr* const m_pWidgetMgr;
   std::unique_ptr<CFWL_WidgetProperties> m_pProperties;
 };
 
 #endif  // XFA_FWL_LIGHTWIDGET_CFWL_WIDGET_H_