Pass CFX_WideString to CXFA_FFDocView::GetWidgetByName.

xfa/fxfa/app/xfa_ffdocview.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/fxfa/include/xfa_ffdocview.h"
 
 #include "core/fxcrt/include/fx_ext.h"
 #include "xfa/fxfa/app/xfa_ffbarcode.h"
@@ skipping 473 matching lines @@
   if (pWidgetAcc == NULL) {
     return iRet;
   }
   CXFA_EventParam eParam;
   eParam.m_eType = eEventType;
   eParam.m_pTarget = pWidgetAcc;
   eParam.m_bIsFormReady = bIsFormReady;
   iRet |= XFA_ProcessEvent(this, pWidgetAcc, &eParam);
   return iRet;
 }
-CXFA_FFWidget* CXFA_FFDocView::GetWidgetByName(const CFX_WideStringC& wsName,
+
+CXFA_FFWidget* CXFA_FFDocView::GetWidgetByName(const CFX_WideString& wsName,
                                                CXFA_FFWidget* pRefWidget) {
-  CXFA_WidgetAcc* pRefAcc = pRefWidget ? pRefWidget->GetDataAcc() : NULL;
-  if (CXFA_WidgetAcc* pAcc = GetWidgetAccByName(wsName, pRefAcc)) {
-    return pAcc->GetNextWidget(NULL);
-  }
-  return NULL;
+  CXFA_WidgetAcc* pRefAcc = pRefWidget ? pRefWidget->GetDataAcc() : nullptr;
+  CXFA_WidgetAcc* pAcc = GetWidgetAccByName(wsName, pRefAcc);
+  return pAcc ? pAcc->GetNextWidget(nullptr) : nullptr;
 }
+
 CXFA_WidgetAcc* CXFA_FFDocView::GetWidgetAccByName(
-    const CFX_WideStringC& wsName,
+    const CFX_WideString& wsName,
     CXFA_WidgetAcc* pRefWidgetAcc) {
   CFX_WideString wsExpression;
   uint32_t dwStyle = XFA_RESOLVENODE_Children | XFA_RESOLVENODE_Properties |
                      XFA_RESOLVENODE_Siblings | XFA_RESOLVENODE_Parent;
   CXFA_ScriptContext* pScriptContext = m_pDoc->GetXFADoc()->GetScriptContext();
   if (!pScriptContext) {
-    return NULL;
+    return nullptr;
   }
-  CXFA_Node* refNode = NULL;
+  CXFA_Node* refNode = nullptr;
   if (pRefWidgetAcc) {
     refNode = pRefWidgetAcc->GetNode();
     wsExpression = wsName;
   } else {
     wsExpression = L"$form." + wsName;
   }
   XFA_RESOLVENODE_RS resoveNodeRS;
   int32_t iRet = pScriptContext->ResolveObjects(
       refNode, wsExpression.AsStringC(), resoveNodeRS, dwStyle);
   if (iRet < 1) {
-    return NULL;
+    return nullptr;
   }
   if (resoveNodeRS.dwFlags == XFA_RESOVENODE_RSTYPE_Nodes) {
     CXFA_Node* pNode = resoveNodeRS.nodes[0]->AsNode();
     if (pNode) {
       return (CXFA_WidgetAcc*)pNode->GetWidgetData();
     }
   }
-  return NULL;
+  return nullptr;
 }
 
 void CXFA_FFDocView::OnPageEvent(CXFA_ContainerLayoutItem* pSender,
                                  XFA_PAGEEVENT eEvent,
                                  int32_t iPageIndex) {
   CXFA_FFPageView* pFFPageView = static_cast<CXFA_FFPageView*>(pSender);
   if (eEvent == XFA_PAGEEVENT_PageRemoved) {
     m_pDoc->GetDocProvider()->PageViewEvent(pFFPageView,
                                             XFA_PAGEVIEWEVENT_PostRemoved);
     return;
@@ skipping 376 matching lines @@
 CXFA_WidgetAcc* CXFA_WidgetAccIterator::GetCurrentWidgetAcc() {
   return NULL;
 }
 FX_BOOL CXFA_WidgetAccIterator::SetCurrentWidgetAcc(CXFA_WidgetAcc* hWidget) {
   return FALSE;
 }
 void CXFA_WidgetAccIterator::SkipTree() {
   m_ContentIterator.SkipChildrenAndMoveToNext();
   m_pCurWidgetAcc = NULL;
 }