Add back-pointer to "Associated widget" to CFWL_WidgetImp.

xfa/fwl/lightwidget/cfwl_widget.cpp

 // 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
 
 #include "xfa/fwl/lightwidget/cfwl_widget.h"
 
 #include "xfa/fde/tto/fde_textout.h"
 #include "xfa/fwl/core/cfwl_themetext.h"
@@ skipping 23 matching lines @@
     return FWL_Type::Unknown;
   return m_pIface->GetClassID();
 }
 
 FX_BOOL CFWL_Widget::IsInstance(const CFX_WideStringC& wsClass) const {
   if (!m_pIface)
     return FALSE;
   return m_pIface->IsInstance(wsClass);
 }
 
-static void* gs_pFWLWidget = (void*)FXBSTR_ID('l', 'i', 'g', 't');
-
 FWL_Error CFWL_Widget::Initialize(const CFWL_WidgetProperties* pProperties) {
   if (!m_pIface)
     return FWL_Error::Indefinite;
-  return m_pIface->SetPrivateData(gs_pFWLWidget, this, nullptr);
+  m_pIface->SetAssociateWidget(this);
+  return FWL_Error::Succeeded;
 }
 
 FWL_Error CFWL_Widget::GetWidgetRect(CFX_RectF& rect, FX_BOOL bAutoSize) {
   if (!m_pIface)
     return FWL_Error::Indefinite;
   return m_pIface->GetWidgetRect(rect, bAutoSize);
 }
 
 FWL_Error CFWL_Widget::GetGlobalRect(CFX_RectF& rect) {
   if (!m_pIface)
@@ skipping 11 matching lines @@
   if (!m_pIface)
     return FWL_Error::Indefinite;
   return m_pIface->GetClientRect(rect);
 }
 
 CFWL_Widget* CFWL_Widget::GetParent() {
   if (!m_pIface)
     return nullptr;
 
   IFWL_Widget* parent = m_pIface->GetParent();
-  if (parent)
-    return static_cast<CFWL_Widget*>(parent->GetPrivateData(gs_pFWLWidget));
-  return nullptr;
+  if (!parent)
+    return nullptr;
+
+  return static_cast<CFWL_Widget*>(parent->GetAssociateWidget());
 }
 
 FWL_Error CFWL_Widget::SetParent(CFWL_Widget* pParent) {
   if (!m_pIface)
     return FWL_Error::Indefinite;
   return m_pIface->SetParent(pParent ? pParent->GetWidget() : nullptr);
 }
 
 CFWL_Widget* CFWL_Widget::GetOwner() {
   return nullptr;
@@ skipping 40 matching lines @@
 
 void* CFWL_Widget::GetLayoutItem() const {
   return m_pIface ? m_pIface->GetLayoutItem() : nullptr;
 }
 
 void CFWL_Widget::SetLayoutItem(void* pItem) {
   if (m_pIface)
     m_pIface->SetLayoutItem(pItem);
 }
 
-FWL_Error CFWL_Widget::SetPrivateData(void* module_id,
-                                      void* pData,
-                                      PD_CALLBACK_FREEDATA callback) {
-  if (!m_pIface)
-    return FWL_Error::Indefinite;
-  return m_pIface->SetPrivateData(module_id, pData, callback);
-}
-
-void* CFWL_Widget::GetPrivateData(void* module_id) {
-  if (!m_pIface)
-    return nullptr;
-  return m_pIface->GetPrivateData(module_id);
-}
-
 FWL_Error CFWL_Widget::Update() {
   if (!m_pIface)
     return FWL_Error::Indefinite;
   return m_pIface->Update();
 }
 
 FWL_Error CFWL_Widget::LockUpdate() {
   if (!m_pIface)
     return FWL_Error::Indefinite;
   return m_pIface->LockUpdate();
@@ skipping 173 matching lines @@
   calPart.m_iTTOAlign = FDE_TTOALIGNMENT_TopLeft;
   CFX_RectF rect;
   FX_FLOAT fWidth = bMultiLine
                         ? (iLineWidth > 0 ? (FX_FLOAT)iLineWidth
                                           : FWL_WGT_CalcMultiLineDefWidth)
                         : FWL_WGT_CalcWidth;
   rect.Set(0, 0, fWidth, FWL_WGT_CalcHeight);
   pTheme->CalcTextRect(&calPart, rect);
   return CFX_SizeF(rect.width, rect.height);
 }