Use more UnownedPtr<> in cfxa_ffpageview

Change-Id: Ifdb9fb23d61082b7c1b9b93c057e0881959cea2a
Reviewed-on: https://pdfium-review.googlesource.com/36530
Commit-Queue: dsinclair <dsinclair@chromium.org>
Reviewed-by: dsinclair <dsinclair@chromium.org>

2 files changed, 17 insertions, 16 deletions

diff --git a/xfa/fxfa/cxfa_ffpageview.cpp b/xfa/fxfa/cxfa_ffpageview.cpp
index d85ff07c0f..cb9743972e 100644
--- a/xfa/fxfa/cxfa_ffpageview.cpp
+++ b/xfa/fxfa/cxfa_ffpageview.cpp
@@ -247,10 +247,10 @@ void CXFA_FFTabOrderPageWidgetIterator::Reset() {
 CXFA_FFWidget* CXFA_FFTabOrderPageWidgetIterator::MoveToFirst() {
   for (int32_t i = 0;
        i < pdfium::CollectionSize<int32_t>(m_TabOrderWidgetArray); i++) {
-    if (PageWidgetFilter(m_TabOrderWidgetArray[i], m_dwFilter, true,
+    if (PageWidgetFilter(m_TabOrderWidgetArray[i].Get(), m_dwFilter, true,
                          m_bIgnorerelevant)) {
       m_iCurWidget = i;
-      return m_TabOrderWidgetArray[m_iCurWidget];
+      return m_TabOrderWidgetArray[m_iCurWidget].Get();
     }
   }
   return nullptr;
@@ -259,10 +259,10 @@ CXFA_FFWidget* CXFA_FFTabOrderPageWidgetIterator::MoveToFirst() {
 CXFA_FFWidget* CXFA_FFTabOrderPageWidgetIterator::MoveToLast() {
   for (int32_t i = pdfium::CollectionSize<int32_t>(m_TabOrderWidgetArray) - 1;
        i >= 0; i--) {
-    if (PageWidgetFilter(m_TabOrderWidgetArray[i], m_dwFilter, true,
+    if (PageWidgetFilter(m_TabOrderWidgetArray[i].Get(), m_dwFilter, true,
                          m_bIgnorerelevant)) {
       m_iCurWidget = i;
-      return m_TabOrderWidgetArray[m_iCurWidget];
+      return m_TabOrderWidgetArray[m_iCurWidget].Get();
     }
   }
   return nullptr;
@@ -271,10 +271,10 @@ CXFA_FFWidget* CXFA_FFTabOrderPageWidgetIterator::MoveToLast() {
 CXFA_FFWidget* CXFA_FFTabOrderPageWidgetIterator::MoveToNext() {
   for (int32_t i = m_iCurWidget + 1;
        i < pdfium::CollectionSize<int32_t>(m_TabOrderWidgetArray); i++) {
-    if (PageWidgetFilter(m_TabOrderWidgetArray[i], m_dwFilter, true,
+    if (PageWidgetFilter(m_TabOrderWidgetArray[i].Get(), m_dwFilter, true,
                          m_bIgnorerelevant)) {
       m_iCurWidget = i;
-      return m_TabOrderWidgetArray[m_iCurWidget];
+      return m_TabOrderWidgetArray[m_iCurWidget].Get();
     }
   }
   m_iCurWidget = -1;
@@ -283,10 +283,10 @@ CXFA_FFWidget* CXFA_FFTabOrderPageWidgetIterator::MoveToNext() {
 
 CXFA_FFWidget* CXFA_FFTabOrderPageWidgetIterator::MoveToPrevious() {
   for (int32_t i = m_iCurWidget - 1; i >= 0; i--) {
-    if (PageWidgetFilter(m_TabOrderWidgetArray[i], m_dwFilter, true,
+    if (PageWidgetFilter(m_TabOrderWidgetArray[i].Get(), m_dwFilter, true,
                          m_bIgnorerelevant)) {
       m_iCurWidget = i;
-      return m_TabOrderWidgetArray[m_iCurWidget];
+      return m_TabOrderWidgetArray[m_iCurWidget].Get();
     }
   }
   m_iCurWidget = -1;
@@ -294,7 +294,8 @@ CXFA_FFWidget* CXFA_FFTabOrderPageWidgetIterator::MoveToPrevious() {
 }
 
 CXFA_FFWidget* CXFA_FFTabOrderPageWidgetIterator::GetCurrentWidget() {
-  return m_iCurWidget >= 0 ? m_TabOrderWidgetArray[m_iCurWidget] : nullptr;
+  return m_iCurWidget >= 0 ? m_TabOrderWidgetArray[m_iCurWidget].Get()
+                           : nullptr;
 }
 
 bool CXFA_FFTabOrderPageWidgetIterator::SetCurrentWidget(
@@ -343,7 +344,7 @@ void CXFA_FFTabOrderPageWidgetIterator::CreateTabOrderWidgetArray() {
   while (pdfium::CollectionSize<int32_t>(m_TabOrderWidgetArray) <
          nWidgetCount) {
     if (!pdfium::ContainsValue(m_TabOrderWidgetArray, hWidget)) {
-      m_TabOrderWidgetArray.push_back(hWidget);
+      m_TabOrderWidgetArray.emplace_back(hWidget);
       CXFA_Node* pNode = hWidget->GetNode();
       if (pNode->GetFFWidgetType() == XFA_FFWidgetType::kExclGroup) {
         auto it = std::find(SpaceOrderWidgetArray.begin(),
@@ -357,7 +358,7 @@ void CXFA_FFTabOrderPageWidgetIterator::CreateTabOrderWidgetArray() {
           if (radio->GetNode()->GetExclGroupIfExists() != pNode)
             break;
           if (!pdfium::ContainsValue(m_TabOrderWidgetArray, hWidget))
-            m_TabOrderWidgetArray.push_back(radio);
+            m_TabOrderWidgetArray.emplace_back(radio);
 
           iWidgetIndex++;
         }
@@ -432,7 +433,7 @@ void CXFA_FFTabOrderPageWidgetIterator::OrderContainer(
 
 void CXFA_FFTabOrderPageWidgetIterator::CreateSpaceOrderWidgetArray(
     std::vector<CXFA_FFWidget*>* WidgetArray) {
-  CXFA_LayoutItemIterator sIterator(m_pPageView);
+  CXFA_LayoutItemIterator sIterator(m_pPageView.Get());
   auto pParam = pdfium::MakeUnique<CXFA_TabParam>(nullptr);
   bool bCurrentItem = false;
   bool bContentArea = false;
diff --git a/xfa/fxfa/cxfa_ffpageview.h b/xfa/fxfa/cxfa_ffpageview.h
index 10dac26b92..f3ae069638 100644
--- a/xfa/fxfa/cxfa_ffpageview.h
+++ b/xfa/fxfa/cxfa_ffpageview.h
@@ -54,8 +54,8 @@ class CXFA_FFPageWidgetIterator : public IXFA_WidgetIterator {
  protected:
   CXFA_FFWidget* GetWidget(CXFA_LayoutItem* pLayoutItem);
 
-  CXFA_FFPageView* m_pPageView;
-  CXFA_FFWidget* m_hCurWidget;
+  UnownedPtr<CXFA_FFPageView> m_pPageView;
+  UnownedPtr<CXFA_FFWidget> m_hCurWidget;
   uint32_t m_dwFilter;
   bool m_bIgnorerelevant;
   CXFA_LayoutItemIterator m_sIterator;
@@ -104,8 +104,8 @@ class CXFA_FFTabOrderPageWidgetIterator : public IXFA_WidgetIterator {
                       bool& bContentArea,
                       bool bMarsterPage = false);
 
-  std::vector<CXFA_FFWidget*> m_TabOrderWidgetArray;
-  CXFA_FFPageView* m_pPageView;
+  std::vector<UnownedPtr<CXFA_FFWidget>> m_TabOrderWidgetArray;
+  UnownedPtr<CXFA_FFPageView> m_pPageView;
   uint32_t m_dwFilter;
   int32_t m_iCurWidget;
   bool m_bIgnorerelevant;