Remove NULL in xfa/

xfa/fxfa/parser/xfa_document_layout_imp.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/parser/xfa_document_layout_imp.h"
 
 #include "xfa/fxfa/parser/xfa_basic_imp.h"
 #include "xfa/fxfa/parser/xfa_doclayout.h"
@@ skipping 13 matching lines @@
     m_pLayoutProcessor = new CXFA_LayoutProcessor(this);
     ASSERT(m_pLayoutProcessor);
   }
   return m_pLayoutProcessor;
 }
 CXFA_LayoutProcessor* CXFA_Document::GetDocLayout() {
   return GetLayoutProcessor();
 }
 CXFA_LayoutProcessor::CXFA_LayoutProcessor(CXFA_Document* pDocument)
     : m_pDocument(pDocument),
-      m_pRootItemLayoutProcessor(NULL),
-      m_pLayoutPageMgr(NULL),
+      m_pRootItemLayoutProcessor(nullptr),
+      m_pLayoutPageMgr(nullptr),
       m_nProgressCounter(0),
       m_bNeeLayout(TRUE) {}
 CXFA_LayoutProcessor::~CXFA_LayoutProcessor() {
   ClearLayoutData();
 }
 CXFA_Document* CXFA_LayoutProcessor::GetDocument() const {
   return m_pDocument;
 }
 
 int32_t CXFA_LayoutProcessor::StartLayout(FX_BOOL bForceRestart) {
@@ skipping 57 matching lines @@
     m_rgChangedContainers.RemoveAll();
   }
   return 100 * (eStatus == XFA_ItemLayoutProcessorResult_Done
                     ? m_nProgressCounter
                     : m_nProgressCounter - 1) /
          m_nProgressCounter;
 }
 FX_BOOL CXFA_LayoutProcessor::IncrementLayout() {
   if (m_bNeeLayout) {
     StartLayout(TRUE);
-    return DoLayout(NULL) == 100;
+    return DoLayout(nullptr) == 100;
   }
   for (int32_t i = 0, c = m_rgChangedContainers.GetSize(); i < c; i++) {
     CXFA_Node* pNode = m_rgChangedContainers[i];
     CXFA_Node* pParentNode =
         pNode->GetNodeItem(XFA_NODEITEM_Parent, XFA_ObjectType::ContainerNode);
     if (!pParentNode) {
       return FALSE;
     }
     if (!CXFA_ItemLayoutProcessor::IncrementRelayoutNode(this, pNode,
                                                          pParentNode)) {
       return FALSE;
     }
   }
   m_rgChangedContainers.RemoveAll();
   return TRUE;
 }
 int32_t CXFA_LayoutProcessor::CountPages() const {
   return m_pLayoutPageMgr ? m_pLayoutPageMgr->GetPageCount() : 0;
 }
 CXFA_ContainerLayoutItem* CXFA_LayoutProcessor::GetPage(int32_t index) const {
-  return m_pLayoutPageMgr ? m_pLayoutPageMgr->GetPage(index) : NULL;
+  return m_pLayoutPageMgr ? m_pLayoutPageMgr->GetPage(index) : nullptr;
 }
 CXFA_LayoutItem* CXFA_LayoutProcessor::GetLayoutItem(CXFA_Node* pFormItem) {
   return static_cast<CXFA_LayoutItem*>(
       pFormItem->GetUserData(XFA_LAYOUTITEMKEY));
 }
 void CXFA_LayoutProcessor::AddChangedContainer(CXFA_Node* pContainer) {
   if (m_rgChangedContainers.Find(pContainer) < 0) {
     m_rgChangedContainers.Add(pContainer);
   }
 }
 CXFA_ContainerLayoutItem* CXFA_LayoutProcessor::GetRootLayoutItem() const {
-  return m_pLayoutPageMgr ? m_pLayoutPageMgr->GetRootLayoutItem() : NULL;
+  return m_pLayoutPageMgr ? m_pLayoutPageMgr->GetRootLayoutItem() : nullptr;
 }
 
 void CXFA_LayoutProcessor::ClearLayoutData() {
   delete m_pLayoutPageMgr;
   m_pLayoutPageMgr = nullptr;
   delete m_pRootItemLayoutProcessor;
   m_pRootItemLayoutProcessor = nullptr;
   m_nProgressCounter = 0;
 }
 
 FX_BOOL CXFA_LayoutProcessor::IsNeedLayout() {
   return m_bNeeLayout || m_rgChangedContainers.GetSize() > 0;
 }
 CXFA_LayoutItem::CXFA_LayoutItem(CXFA_Node* pNode, FX_BOOL bIsContentLayoutItem)
     : m_pFormNode(pNode),
-      m_pParent(NULL),
-      m_pNextSibling(NULL),
-      m_pFirstChild(NULL),
+      m_pParent(nullptr),
+      m_pNextSibling(nullptr),
+      m_pFirstChild(nullptr),
       m_bIsContentLayoutItem(bIsContentLayoutItem) {}
 CXFA_LayoutItem::~CXFA_LayoutItem() {}
 CXFA_ContainerLayoutItem::CXFA_ContainerLayoutItem(CXFA_Node* pNode)
-    : CXFA_LayoutItem(pNode, FALSE), m_pOldSubform(NULL) {}
+    : CXFA_LayoutItem(pNode, FALSE), m_pOldSubform(nullptr) {}
 CXFA_LayoutProcessor* CXFA_ContainerLayoutItem::GetLayout() const {
   return m_pFormNode->GetDocument()->GetLayoutProcessor();
 }
 int32_t CXFA_ContainerLayoutItem::GetPageIndex() const {
   return m_pFormNode->GetDocument()
       ->GetLayoutProcessor()
       ->GetLayoutPageMgr()
       ->GetPageIndex(this);
 }
 
 void CXFA_ContainerLayoutItem::GetPageSize(CFX_SizeF& size) const {
   size.clear();
   CXFA_Node* pMedium = m_pFormNode->GetFirstChildByClass(XFA_Element::Medium);
   if (!pMedium)
     return;
 
   size = CFX_SizeF(pMedium->GetMeasure(XFA_ATTRIBUTE_Short).ToUnit(XFA_UNIT_Pt),
                    pMedium->GetMeasure(XFA_ATTRIBUTE_Long).ToUnit(XFA_UNIT_Pt));
   if (pMedium->GetEnum(XFA_ATTRIBUTE_Orientation) ==
       XFA_ATTRIBUTEENUM_Landscape) {
     size = CFX_SizeF(size.y, size.x);
   }
 }
 
 CXFA_Node* CXFA_ContainerLayoutItem::GetMasterPage() const {
   return m_pFormNode;
 }
 CXFA_ContentLayoutItem::CXFA_ContentLayoutItem(CXFA_Node* pNode)
     : CXFA_LayoutItem(pNode, TRUE),
-      m_pPrev(NULL),
-      m_pNext(NULL),
+      m_pPrev(nullptr),
+      m_pNext(nullptr),
       m_dwStatus(0) {}
 CXFA_ContentLayoutItem::~CXFA_ContentLayoutItem() {
   if (m_pFormNode->GetUserData(XFA_LAYOUTITEMKEY) == this) {
-    m_pFormNode->SetUserData(XFA_LAYOUTITEMKEY, NULL);
+    m_pFormNode->SetUserData(XFA_LAYOUTITEMKEY, nullptr);
   }
 }