Use smart pointers for class owned pointers under xfa/fde

Use smart pointer to replace raw pointer type for class
owned member variables so that memory management will
be easier.

BUG=pdfium:518

Review-Url: https://codereview.chromium.org/2208423002

4 files changed, 80 insertions, 47 deletions

diff --git a/xfa/fde/css/fde_cssstyleselector.cpp b/xfa/fde/css/fde_cssstyleselector.cpp
index 6a1a0b0c56..b68ace8dce 100644
--- a/xfa/fde/css/fde_cssstyleselector.cpp
+++ b/xfa/fde/css/fde_cssstyleselector.cpp
@@ -27,6 +27,7 @@ int32_t CFDE_CSSCounterStyle::FindIndex(const FX_WCHAR* pszIdentifier) {
   }
   return -1;
 }
+
 void CFDE_CSSCounterStyle::DoUpdateIndex(IFDE_CSSValueList* pList) {
   if (!pList)
     return;
@@ -105,13 +106,8 @@ FDE_CSSRuleData::FDE_CSSRuleData(CFDE_CSSSelector* pSel,
   }
 }
 
-CFDE_CSSStyleSelector::CFDE_CSSStyleSelector()
-    : m_pFontMgr(nullptr),
-      m_fDefFontSize(12.0f),
-      m_pRuleDataStore(nullptr),
-      m_pInlineStyleStore(nullptr),
-      m_pFixedStyleStore(nullptr),
-      m_pAccelerator(nullptr) {
+CFDE_CSSStyleSelector::CFDE_CSSStyleSelector(IFGAS_FontMgr* pFontMgr)
+    : m_pFontMgr(pFontMgr), m_fDefFontSize(12.0f) {
   m_ePriorities[FDE_CSSSTYLESHEETPRIORITY_High] = FDE_CSSSTYLESHEETGROUP_Author;
   m_ePriorities[FDE_CSSSTYLESHEETPRIORITY_Mid] = FDE_CSSSTYLESHEETGROUP_User;
   m_ePriorities[FDE_CSSSTYLESHEETPRIORITY_Low] =
@@ -120,14 +116,8 @@ CFDE_CSSStyleSelector::CFDE_CSSStyleSelector()
 
 CFDE_CSSStyleSelector::~CFDE_CSSStyleSelector() {
   Reset();
-  delete m_pInlineStyleStore;
-  delete m_pFixedStyleStore;
-  delete m_pAccelerator;
 }
 
-void CFDE_CSSStyleSelector::SetFontMgr(IFGAS_FontMgr* pFontMgr) {
-  m_pFontMgr = pFontMgr;
-}
 void CFDE_CSSStyleSelector::SetDefFontSize(FX_FLOAT fFontSize) {
   ASSERT(fFontSize > 0);
   m_fDefFontSize = fFontSize;
@@ -135,9 +125,9 @@ void CFDE_CSSStyleSelector::SetDefFontSize(FX_FLOAT fFontSize) {
 
 CFDE_CSSAccelerator* CFDE_CSSStyleSelector::InitAccelerator() {
   if (!m_pAccelerator)
-    m_pAccelerator = new CFDE_CSSAccelerator;
+    m_pAccelerator.reset(new CFDE_CSSAccelerator);
   m_pAccelerator->Clear();
-  return m_pAccelerator;
+  return m_pAccelerator.get();
 }
 
 IFDE_CSSComputedStyle* CFDE_CSSStyleSelector::CreateComputedStyle(
@@ -146,8 +136,8 @@ IFDE_CSSComputedStyle* CFDE_CSSStyleSelector::CreateComputedStyle(
     m_pFixedStyleStore = IFX_MemoryAllocator::Create(
         FX_ALLOCTYPE_Fixed, 16, sizeof(CFDE_CSSComputedStyle));
   }
-  CFDE_CSSComputedStyle* pStyle = FXTARGET_NewWith(m_pFixedStyleStore)
-      CFDE_CSSComputedStyle(m_pFixedStyleStore);
+  CFDE_CSSComputedStyle* pStyle = FXTARGET_NewWith(m_pFixedStyleStore.get())
+      CFDE_CSSComputedStyle(m_pFixedStyleStore.get());
   if (pParentStyle) {
     pStyle->m_InheritedData =
         static_cast<CFDE_CSSComputedStyle*>(pParentStyle)->m_InheritedData;
@@ -157,6 +147,7 @@ IFDE_CSSComputedStyle* CFDE_CSSStyleSelector::CreateComputedStyle(
   pStyle->m_NonInheritedData.Reset();
   return pStyle;
 }
+
 FX_BOOL CFDE_CSSStyleSelector::SetStyleSheet(FDE_CSSSTYLESHEETGROUP eType,
                                              IFDE_CSSStyleSheet* pSheet) {
   ASSERT(eType < FDE_CSSSTYLESHEETGROUP_MAX);
@@ -166,6 +157,7 @@ FX_BOOL CFDE_CSSStyleSelector::SetStyleSheet(FDE_CSSSTYLESHEETGROUP eType,
     dest.Add(pSheet);
   return TRUE;
 }
+
 FX_BOOL CFDE_CSSStyleSelector::SetStyleSheets(
     FDE_CSSSTYLESHEETGROUP eType,
     const CFDE_CSSStyleSheetArray* pArray) {
@@ -177,27 +169,30 @@ FX_BOOL CFDE_CSSStyleSelector::SetStyleSheets(
     dest.RemoveAt(0, dest.GetSize());
   return TRUE;
 }
+
 void CFDE_CSSStyleSelector::SetStylePriority(
     FDE_CSSSTYLESHEETGROUP eType,
     FDE_CSSSTYLESHEETPRIORITY ePriority) {
   m_ePriorities[ePriority] = eType;
 }
+
 void CFDE_CSSStyleSelector::UpdateStyleIndex(uint32_t dwMediaList) {
   Reset();
   m_pRuleDataStore = IFX_MemoryAllocator::Create(FX_ALLOCTYPE_Static, 1024, 0);
   for (int32_t iGroup = 0; iGroup < FDE_CSSSTYLESHEETGROUP_MAX; ++iGroup) {
     CFDE_CSSRuleCollection& rules = m_RuleCollection[iGroup];
-    rules.m_pStaticStore = m_pRuleDataStore;
+    rules.m_pStaticStore = m_pRuleDataStore.get();
     rules.AddRulesFrom(m_SheetGroups[iGroup], dwMediaList, m_pFontMgr);
   }
 }
+
 void CFDE_CSSStyleSelector::Reset() {
   for (int32_t iGroup = 0; iGroup < FDE_CSSSTYLESHEETGROUP_MAX; ++iGroup) {
     m_RuleCollection[iGroup].Clear();
   }
-  delete m_pRuleDataStore;
-  m_pRuleDataStore = nullptr;
+  m_pRuleDataStore.reset();
 }
+
 int32_t CFDE_CSSStyleSelector::MatchDeclarations(
     CXFA_CSSTagProvider* pTag,
     CFDE_CSSDeclarationArray& matchedDecls,
@@ -325,16 +320,18 @@ void CFDE_CSSStyleSelector::ComputeStyle(
       uint32_t dwAttriHash = FX_HashCode_GetW(wsAttri.AsStringC(), true);
       if (dwAttriHash == s_dwStyleHash) {
         if (!pDecl)
-          pDecl = FXTARGET_NewWith(m_pInlineStyleStore) CFDE_CSSDeclaration;
+          pDecl =
+              FXTARGET_NewWith(m_pInlineStyleStore.get()) CFDE_CSSDeclaration;
 
         AppendInlineStyle(pDecl, wsValue.c_str(), wsValue.GetLength());
       } else if (dwAttriHash == s_dwAlignHash) {
         if (!pDecl)
-          pDecl = FXTARGET_NewWith(m_pInlineStyleStore) CFDE_CSSDeclaration;
+          pDecl =
+              FXTARGET_NewWith(m_pInlineStyleStore.get()) CFDE_CSSDeclaration;
 
         FDE_CSSPROPERTYARGS args;
         args.pStringCache = nullptr;
-        args.pStaticStore = m_pInlineStyleStore;
+        args.pStaticStore = m_pInlineStyleStore.get();
         args.pProperty = FDE_GetCSSPropertyByEnum(FDE_CSSPROPERTY_TextAlign);
         pDecl->AddProperty(&args, wsValue.c_str(), wsValue.GetLength());
       }
@@ -431,6 +428,7 @@ void CFDE_CSSStyleSelector::ApplyDeclarations(
     }
   }
 }
+
 void CFDE_CSSStyleSelector::AppendInlineStyle(CFDE_CSSDeclaration* pDecl,
                                               const FX_WCHAR* psz,
                                               int32_t iLen) {
@@ -443,7 +441,7 @@ void CFDE_CSSStyleSelector::AppendInlineStyle(CFDE_CSSDeclaration* pDecl,
   const FX_WCHAR* psz2;
   FDE_CSSPROPERTYARGS args;
   args.pStringCache = nullptr;
-  args.pStaticStore = m_pInlineStyleStore;
+  args.pStaticStore = m_pInlineStyleStore.get();
   args.pProperty = nullptr;
   CFX_WideString wsName;
   while (1) {
@@ -1016,6 +1014,7 @@ void CFDE_CSSStyleSelector::ApplyProperty(
     ASSERT(FALSE);
   }
 }
+
 FX_FLOAT CFDE_CSSStyleSelector::ApplyNumber(FDE_CSSPRIMITIVETYPE eUnit,
                                             FX_FLOAT fValue,
                                             FX_FLOAT fPercentBase) {
@@ -1042,6 +1041,7 @@ FX_FLOAT CFDE_CSSStyleSelector::ApplyNumber(FDE_CSSPRIMITIVETYPE eUnit,
       return fValue;
   }
 }
+
 FDE_CSSRUBYSPAN CFDE_CSSStyleSelector::ToRubySpan(FDE_CSSPROPERTYVALUE eValue) {
   switch (eValue) {
     case FDE_CSSPROPERTYVALUE_None:
@@ -1049,6 +1049,7 @@ FDE_CSSRUBYSPAN CFDE_CSSStyleSelector::ToRubySpan(FDE_CSSPROPERTYVALUE eValue) {
       return FDE_CSSRUBYSPAN_None;
   }
 }
+
 FDE_CSSRUBYPOSITION CFDE_CSSStyleSelector::ToRubyPosition(
     FDE_CSSPROPERTYVALUE eValue) {
   switch (eValue) {
@@ -1064,6 +1065,7 @@ FDE_CSSRUBYPOSITION CFDE_CSSStyleSelector::ToRubyPosition(
       return FDE_CSSRUBYPOSITION_Before;
   }
 }
+
 FDE_CSSRUBYOVERHANG CFDE_CSSStyleSelector::ToRubyOverhang(
     FDE_CSSPROPERTYVALUE eValue) {
   switch (eValue) {
@@ -1078,6 +1080,7 @@ FDE_CSSRUBYOVERHANG CFDE_CSSStyleSelector::ToRubyOverhang(
       return FDE_CSSRUBYOVERHANG_None;
   }
 }
+
 FDE_CSSRUBYALIGN CFDE_CSSStyleSelector::ToRubyAlign(
     FDE_CSSPROPERTYVALUE eValue) {
   switch (eValue) {
@@ -1103,6 +1106,7 @@ FDE_CSSRUBYALIGN CFDE_CSSStyleSelector::ToRubyAlign(
       return FDE_CSSRUBYALIGN_Auto;
   }
 }
+
 FX_BOOL CFDE_CSSStyleSelector::ToTextEmphasisMark(
     FDE_CSSPROPERTYVALUE eValue,
     FDE_CSSTEXTEMPHASISMARK& eMark) {
@@ -1129,6 +1133,7 @@ FX_BOOL CFDE_CSSStyleSelector::ToTextEmphasisMark(
       return FALSE;
   }
 }
+
 FX_BOOL CFDE_CSSStyleSelector::ToTextEmphasisFill(
     FDE_CSSPROPERTYVALUE eValue,
     FDE_CSSTEXTEMPHASISFILL& eFill) {
@@ -1143,6 +1148,7 @@ FX_BOOL CFDE_CSSStyleSelector::ToTextEmphasisFill(
       return FALSE;
   }
 }
+
 FDE_CSSBKGATTACHMENT CFDE_CSSStyleSelector::ToBKGAttachment(
     FDE_CSSPROPERTYVALUE eValue) {
   switch (eValue) {
@@ -1154,6 +1160,7 @@ FDE_CSSBKGATTACHMENT CFDE_CSSStyleSelector::ToBKGAttachment(
       return FDE_CSSBKGATTACHMENT_Fixed;
   }
 }
+
 FDE_CSSCAPTIONSIDE CFDE_CSSStyleSelector::ToCaptionSide(
     FDE_CSSPROPERTYVALUE eValue) {
   switch (eValue) {
@@ -1173,6 +1180,7 @@ FDE_CSSCAPTIONSIDE CFDE_CSSStyleSelector::ToCaptionSide(
       return FDE_CSSCAPTIONSIDE_Top;
   }
 }
+
 FDE_CSSPOSITION CFDE_CSSStyleSelector::ToPosition(FDE_CSSPROPERTYVALUE eValue) {
   switch (eValue) {
     case FDE_CSSPROPERTYVALUE_Static:
@@ -1187,6 +1195,7 @@ FDE_CSSPOSITION CFDE_CSSStyleSelector::ToPosition(FDE_CSSPROPERTYVALUE eValue) {
       return FDE_CSSPOSITION_Static;
   }
 }
+
 FDE_CSSCURSOR CFDE_CSSStyleSelector::ToCursor(FDE_CSSPROPERTYVALUE eValue) {
   switch (eValue) {
     case FDE_CSSPROPERTYVALUE_Auto:
@@ -1215,6 +1224,7 @@ FDE_CSSCURSOR CFDE_CSSStyleSelector::ToCursor(FDE_CSSPROPERTYVALUE eValue) {
       return FDE_CSSCURSOR_Auto;
   }
 }
+
 FDE_CSSBKGREPEAT CFDE_CSSStyleSelector::ToBKGRepeat(
     FDE_CSSPROPERTYVALUE eValue) {
   switch (eValue) {
@@ -1230,6 +1240,7 @@ FDE_CSSBKGREPEAT CFDE_CSSStyleSelector::ToBKGRepeat(
       return FDE_CSSBKGREPEAT_Repeat;
   }
 }
+
 FDE_CSSTEXTCOMBINE CFDE_CSSStyleSelector::ToTextCombine(
     FDE_CSSPROPERTYVALUE eValue) {
   switch (eValue) {
@@ -1240,6 +1251,7 @@ FDE_CSSTEXTCOMBINE CFDE_CSSStyleSelector::ToTextCombine(
       return FDE_CSSTEXTCOMBINE_None;
   }
 }
+
 FDE_CSSLINEBREAK CFDE_CSSStyleSelector::ToLineBreak(
     FDE_CSSPROPERTYVALUE eValue) {
   switch (eValue) {
@@ -1255,6 +1267,7 @@ FDE_CSSLINEBREAK CFDE_CSSStyleSelector::ToLineBreak(
       return FDE_CSSLINEBREAK_Auto;
   }
 }
+
 FDE_CSSOVERFLOW CFDE_CSSStyleSelector::ToOverflow(FDE_CSSPROPERTYVALUE eValue) {
   switch (eValue) {
     case FDE_CSSPROPERTYVALUE_Visible:
@@ -1273,6 +1286,7 @@ FDE_CSSOVERFLOW CFDE_CSSStyleSelector::ToOverflow(FDE_CSSPROPERTYVALUE eValue) {
       return FDE_CSSOVERFLOW_Visible;
   }
 }
+
 FDE_CSSWRITINGMODE CFDE_CSSStyleSelector::ToWritingMode(
     FDE_CSSPROPERTYVALUE eValue) {
   switch (eValue) {
@@ -1286,6 +1300,7 @@ FDE_CSSWRITINGMODE CFDE_CSSStyleSelector::ToWritingMode(
       return FDE_CSSWRITINGMODE_HorizontalTb;
   }
 }
+
 FDE_CSSWORDBREAK CFDE_CSSStyleSelector::ToWordBreak(
     FDE_CSSPROPERTYVALUE eValue) {
   switch (eValue) {
@@ -1301,6 +1316,7 @@ FDE_CSSWORDBREAK CFDE_CSSStyleSelector::ToWordBreak(
       return FDE_CSSWORDBREAK_Normal;
   }
 }
+
 FDE_CSSFLOAT CFDE_CSSStyleSelector::ToFloat(FDE_CSSPROPERTYVALUE eValue) {
   switch (eValue) {
     case FDE_CSSPROPERTYVALUE_Left:
@@ -1313,6 +1329,7 @@ FDE_CSSFLOAT CFDE_CSSStyleSelector::ToFloat(FDE_CSSPROPERTYVALUE eValue) {
       return FDE_CSSFLOAT_None;
   }
 }
+
 FDE_CSSCLEAR CFDE_CSSStyleSelector::ToClear(FDE_CSSPROPERTYVALUE eValue) {
   switch (eValue) {
     case FDE_CSSPROPERTYVALUE_None:
@@ -1327,6 +1344,7 @@ FDE_CSSCLEAR CFDE_CSSStyleSelector::ToClear(FDE_CSSPROPERTYVALUE eValue) {
       return FDE_CSSCLEAR_None;
   }
 }
+
 FDE_CSSPAGEBREAK CFDE_CSSStyleSelector::ToPageBreak(
     FDE_CSSPROPERTYVALUE eValue) {
   switch (eValue) {
@@ -1344,6 +1362,7 @@ FDE_CSSPAGEBREAK CFDE_CSSStyleSelector::ToPageBreak(
       return FDE_CSSPAGEBREAK_Auto;
   }
 }
+
 FDE_CSSDISPLAY CFDE_CSSStyleSelector::ToDisplay(FDE_CSSPROPERTYVALUE eValue) {
   switch (eValue) {
     case FDE_CSSPROPERTYVALUE_Inline:
@@ -1392,6 +1411,7 @@ FDE_CSSDISPLAY CFDE_CSSStyleSelector::ToDisplay(FDE_CSSPROPERTYVALUE eValue) {
       return FDE_CSSDISPLAY_Inline;
   }
 }
+
 FDE_CSSTEXTALIGN CFDE_CSSStyleSelector::ToTextAlign(
     FDE_CSSPROPERTYVALUE eValue) {
   switch (eValue) {
@@ -1407,6 +1427,7 @@ FDE_CSSTEXTALIGN CFDE_CSSStyleSelector::ToTextAlign(
       return FDE_CSSTEXTALIGN_Left;
   }
 }
+
 uint16_t CFDE_CSSStyleSelector::ToFontWeight(FDE_CSSPROPERTYVALUE eValue) {
   switch (eValue) {
     case FDE_CSSPROPERTYVALUE_Normal:
@@ -1421,6 +1442,7 @@ uint16_t CFDE_CSSStyleSelector::ToFontWeight(FDE_CSSPROPERTYVALUE eValue) {
       return 400;
   }
 }
+
 FDE_CSSFONTSTYLE CFDE_CSSStyleSelector::ToFontStyle(
     FDE_CSSPROPERTYVALUE eValue) {
   switch (eValue) {
@@ -1431,6 +1453,7 @@ FDE_CSSFONTSTYLE CFDE_CSSStyleSelector::ToFontStyle(
       return FDE_CSSFONTSTYLE_Normal;
   }
 }
+
 FDE_CSSBORDERSTYLE CFDE_CSSStyleSelector::ToBorderStyle(
     FDE_CSSPROPERTYVALUE eValue) {
   switch (eValue) {
@@ -1458,6 +1481,7 @@ FDE_CSSBORDERSTYLE CFDE_CSSStyleSelector::ToBorderStyle(
       return FDE_CSSBORDERSTYLE_None;
   }
 }
+
 FX_BOOL CFDE_CSSStyleSelector::SetLengthWithPercent(
     FDE_CSSLENGTH& width,
     FDE_CSSPRIMITIVETYPE eType,
@@ -1494,6 +1518,7 @@ FX_BOOL CFDE_CSSStyleSelector::SetLengthWithPercent(
   }
   return FALSE;
 }
+
 FX_FLOAT CFDE_CSSStyleSelector::ToFontSize(FDE_CSSPROPERTYVALUE eValue,
                                            FX_FLOAT fCurFontSize) {
   switch (eValue) {
@@ -1519,6 +1544,7 @@ FX_FLOAT CFDE_CSSStyleSelector::ToFontSize(FDE_CSSPROPERTYVALUE eValue,
       return fCurFontSize;
   }
 }
+
 FDE_CSSVERTICALALIGN CFDE_CSSStyleSelector::ToVerticalAlign(
     FDE_CSSPROPERTYVALUE eValue) {
   switch (eValue) {
@@ -1542,6 +1568,7 @@ FDE_CSSVERTICALALIGN CFDE_CSSStyleSelector::ToVerticalAlign(
       return FDE_CSSVERTICALALIGN_Baseline;
   }
 }
+
 FDE_CSSLISTSTYLETYPE CFDE_CSSStyleSelector::ToListStyleType(
     FDE_CSSPROPERTYVALUE eValue) {
   switch (eValue) {
@@ -1591,12 +1618,14 @@ FDE_CSSLISTSTYLETYPE CFDE_CSSStyleSelector::ToListStyleType(
       return FDE_CSSLISTSTYLETYPE_Disc;
   }
 }
+
 FDE_CSSLISTSTYLEPOSITION CFDE_CSSStyleSelector::ToListStylePosition(
     FDE_CSSPROPERTYVALUE eValue) {
   return eValue == FDE_CSSPROPERTYVALUE_Inside
              ? FDE_CSSLISTSTYLEPOSITION_Inside
              : FDE_CSSLISTSTYLEPOSITION_Outside;
 }
+
 FDE_CSSVISIBILITY CFDE_CSSStyleSelector::ToVisibility(
     FDE_CSSPROPERTYVALUE eValue) {
   switch (eValue) {
@@ -1610,6 +1639,7 @@ FDE_CSSVISIBILITY CFDE_CSSStyleSelector::ToVisibility(
       return FDE_CSSVISIBILITY_Visible;
   }
 }
+
 FDE_CSSWHITESPACE CFDE_CSSStyleSelector::ToWhiteSpace(
     FDE_CSSPROPERTYVALUE eValue) {
   switch (eValue) {
@@ -1627,6 +1657,7 @@ FDE_CSSWHITESPACE CFDE_CSSStyleSelector::ToWhiteSpace(
       return FDE_CSSWHITESPACE_Normal;
   }
 }
+
 uint32_t CFDE_CSSStyleSelector::ToTextDecoration(IFDE_CSSValueList* pValue) {
   uint32_t dwDecoration = 0;
   for (int32_t i = pValue->CountValues() - 1; i >= 0; --i) {
@@ -1656,6 +1687,7 @@ uint32_t CFDE_CSSStyleSelector::ToTextDecoration(IFDE_CSSValueList* pValue) {
   }
   return dwDecoration;
 }
+
 FDE_CSSTEXTTRANSFORM CFDE_CSSStyleSelector::ToTextTransform(
     FDE_CSSPROPERTYVALUE eValue) {
   switch (eValue) {
@@ -1671,6 +1703,7 @@ FDE_CSSTEXTTRANSFORM CFDE_CSSStyleSelector::ToTextTransform(
       return FDE_CSSTEXTTRANSFORM_None;
   }
 }
+
 FDE_CSSFONTVARIANT CFDE_CSSStyleSelector::ToFontVariant(
     FDE_CSSPROPERTYVALUE eValue) {
   return eValue == FDE_CSSPROPERTYVALUE_SmallCaps ? FDE_CSSFONTVARIANT_SmallCaps
diff --git a/xfa/fde/css/fde_cssstyleselector.h b/xfa/fde/css/fde_cssstyleselector.h
index 042e989242..469712fb5d 100644
--- a/xfa/fde/css/fde_cssstyleselector.h
+++ b/xfa/fde/css/fde_cssstyleselector.h
@@ -7,6 +7,7 @@
 #ifndef XFA_FDE_CSS_FDE_CSSSTYLESELECTOR_H_
 #define XFA_FDE_CSS_FDE_CSSSTYLESELECTOR_H_
 
+#include <memory>
 #include <vector>
 
 #include "core/fxcrt/include/fx_ext.h"
@@ -26,8 +27,8 @@ class FDE_CSSRuleData : public CFX_Target {
                   CFDE_CSSDeclaration* pDecl,
                   uint32_t dwPos);
 
-  CFDE_CSSSelector* pSelector;
-  CFDE_CSSDeclaration* pDeclaration;
+  CFDE_CSSSelector* const pSelector;
+  CFDE_CSSDeclaration* const pDeclaration;
   uint32_t dwPriority;
   FDE_CSSRuleData* pNext;
 };
@@ -88,10 +89,9 @@ class CFDE_CSSRuleCollection : public CFX_Target {
 
 class CFDE_CSSStyleSelector : public CFX_Target {
  public:
-  CFDE_CSSStyleSelector();
+  explicit CFDE_CSSStyleSelector(IFGAS_FontMgr* pFontMgr);
   ~CFDE_CSSStyleSelector() override;
 
-  void SetFontMgr(IFGAS_FontMgr* pFontMgr);
   void SetDefFontSize(FX_FLOAT fFontSize);
 
   FX_BOOL SetStyleSheet(FDE_CSSSTYLESHEETGROUP eType,
@@ -174,15 +174,15 @@ class CFDE_CSSStyleSelector : public CFX_Target {
   FDE_CSSRUBYPOSITION ToRubyPosition(FDE_CSSPROPERTYVALUE eValue);
   FDE_CSSRUBYSPAN ToRubySpan(FDE_CSSPROPERTYVALUE eValue);
 
-  IFGAS_FontMgr* m_pFontMgr;
+  IFGAS_FontMgr* const m_pFontMgr;
   FX_FLOAT m_fDefFontSize;
-  IFX_MemoryAllocator* m_pRuleDataStore;
+  std::unique_ptr<IFX_MemoryAllocator> m_pRuleDataStore;
   CFDE_CSSStyleSheetArray m_SheetGroups[FDE_CSSSTYLESHEETGROUP_MAX];
   CFDE_CSSRuleCollection m_RuleCollection[FDE_CSSSTYLESHEETGROUP_MAX];
   FDE_CSSSTYLESHEETGROUP m_ePriorities[FDE_CSSSTYLESHEETPRIORITY_MAX];
-  IFX_MemoryAllocator* m_pInlineStyleStore;
-  IFX_MemoryAllocator* m_pFixedStyleStore;
-  CFDE_CSSAccelerator* m_pAccelerator;
+  std::unique_ptr<IFX_MemoryAllocator> m_pInlineStyleStore;
+  std::unique_ptr<IFX_MemoryAllocator> m_pFixedStyleStore;
+  std::unique_ptr<CFDE_CSSAccelerator> m_pAccelerator;
   std::vector<FDE_CSSRuleData*> m_MatchedRules;
 };
 
@@ -413,7 +413,7 @@ class CFDE_CSSComputedStyle : public IFDE_CSSComputedStyle,
                       const CFX_WideString& wsValue);
 
   uint32_t m_dwRefCount;
-  IFX_MemoryAllocator* m_pAllocator;
+  IFX_MemoryAllocator* const m_pAllocator;
   CFDE_CSSInheritedData m_InheritedData;
   CFDE_CSSNonInheritedData m_NonInheritedData;
   CFX_WideStringArray m_CustomProperties;
diff --git a/xfa/fde/css/fde_cssstylesheet.cpp b/xfa/fde/css/fde_cssstylesheet.cpp
index 99beab8cf6..bc94cc2f70 100644
--- a/xfa/fde/css/fde_cssstylesheet.cpp
+++ b/xfa/fde/css/fde_cssstylesheet.cpp
@@ -78,7 +78,6 @@ CFDE_CSSStyleSheet::CFDE_CSSStyleSheet(uint32_t dwMediaList)
     : m_wCodePage(FX_CODEPAGE_UTF8),
       m_wRefCount(1),
       m_dwMediaList(dwMediaList),
-      m_pAllocator(nullptr),
       m_RuleArray(100) {
   ASSERT(m_dwMediaList > 0);
 }
@@ -108,8 +107,7 @@ void CFDE_CSSStyleSheet::Reset() {
   m_RuleArray.RemoveAll(FALSE);
   m_Selectors.RemoveAll();
   m_StringCache.clear();
-  delete m_pAllocator;
-  m_pAllocator = nullptr;
+  m_pAllocator.reset();
 }
 
 uint32_t CFDE_CSSStyleSheet::Retain() {
@@ -228,8 +226,8 @@ FDE_CSSSYNTAXSTATUS CFDE_CSSStyleSheet::LoadMediaRule(
         break;
       case FDE_CSSSYNTAXSTATUS_DeclOpen:
         if ((dwMediaList & m_dwMediaList) > 0 && !pMediaRule) {
-          pMediaRule =
-              FXTARGET_NewWith(m_pAllocator) CFDE_CSSMediaRule(dwMediaList);
+          pMediaRule = FXTARGET_NewWith(m_pAllocator.get())
+              CFDE_CSSMediaRule(dwMediaList);
           m_RuleArray.Add(pMediaRule);
         }
         break;
@@ -248,7 +246,7 @@ FDE_CSSSYNTAXSTATUS CFDE_CSSStyleSheet::LoadStyleRule(
   const FX_WCHAR* pszValue = nullptr;
   int32_t iValueLen = 0;
   FDE_CSSPROPERTYARGS propertyArgs;
-  propertyArgs.pStaticStore = m_pAllocator;
+  propertyArgs.pStaticStore = m_pAllocator.get();
   propertyArgs.pStringCache = &m_StringCache;
   propertyArgs.pProperty = nullptr;
   CFX_WideString wsName;
@@ -256,8 +254,8 @@ FDE_CSSSYNTAXSTATUS CFDE_CSSStyleSheet::LoadStyleRule(
     switch (pSyntax->DoSyntaxParse()) {
       case FDE_CSSSYNTAXSTATUS_Selector: {
         pszValue = pSyntax->GetCurrentString(iValueLen);
-        CFDE_CSSSelector* pSelector =
-            CFDE_CSSSelector::FromString(m_pAllocator, pszValue, iValueLen);
+        CFDE_CSSSelector* pSelector = CFDE_CSSSelector::FromString(
+            m_pAllocator.get(), pszValue, iValueLen);
         if (pSelector)
           m_Selectors.Add(pSelector);
       } break;
@@ -286,8 +284,8 @@ FDE_CSSSYNTAXSTATUS CFDE_CSSStyleSheet::LoadStyleRule(
         break;
       case FDE_CSSSYNTAXSTATUS_DeclOpen:
         if (!pStyleRule && m_Selectors.GetSize() > 0) {
-          pStyleRule = FXTARGET_NewWith(m_pAllocator) CFDE_CSSStyleRule;
-          pStyleRule->SetSelector(m_pAllocator, m_Selectors);
+          pStyleRule = FXTARGET_NewWith(m_pAllocator.get()) CFDE_CSSStyleRule;
+          pStyleRule->SetSelector(m_pAllocator.get(), m_Selectors);
           ruleArray.Add(pStyleRule);
         } else {
           SkipRuleSet(pSyntax);
@@ -312,7 +310,7 @@ FDE_CSSSYNTAXSTATUS CFDE_CSSStyleSheet::LoadFontFaceRule(
   const FX_WCHAR* pszValue = nullptr;
   int32_t iValueLen = 0;
   FDE_CSSPROPERTYARGS propertyArgs;
-  propertyArgs.pStaticStore = m_pAllocator;
+  propertyArgs.pStaticStore = m_pAllocator.get();
   propertyArgs.pStringCache = &m_StringCache;
   propertyArgs.pProperty = nullptr;
   for (;;) {
@@ -333,7 +331,8 @@ FDE_CSSSYNTAXSTATUS CFDE_CSSStyleSheet::LoadFontFaceRule(
         break;
       case FDE_CSSSYNTAXSTATUS_DeclOpen:
         if (!pFontFaceRule) {
-          pFontFaceRule = FXTARGET_NewWith(m_pAllocator) CFDE_CSSFontFaceRule;
+          pFontFaceRule =
+              FXTARGET_NewWith(m_pAllocator.get()) CFDE_CSSFontFaceRule;
           ruleArray.Add(pFontFaceRule);
         }
         break;
diff --git a/xfa/fde/css/fde_cssstylesheet.h b/xfa/fde/css/fde_cssstylesheet.h
index d4781f8a8d..b013e2d2bd 100644
--- a/xfa/fde/css/fde_cssstylesheet.h
+++ b/xfa/fde/css/fde_cssstylesheet.h
@@ -7,6 +7,7 @@
 #ifndef XFA_FDE_CSS_FDE_CSSSTYLESHEET_H_
 #define XFA_FDE_CSS_FDE_CSSSTYLESHEET_H_
 
+#include <memory>
 #include <unordered_map>
 
 #include "core/fxcrt/include/fx_ext.h"
@@ -133,7 +134,7 @@ class CFDE_CSSStyleSheet : public IFDE_CSSStyleSheet, public CFX_Target {
   uint16_t m_wCodePage;
   uint16_t m_wRefCount;
   uint32_t m_dwMediaList;
-  IFX_MemoryAllocator* m_pAllocator;
+  std::unique_ptr<IFX_MemoryAllocator> m_pAllocator;
   CFX_MassArrayTemplate<IFDE_CSSRule*> m_RuleArray;
   CFX_WideString m_szUrl;
   CFX_ArrayTemplate<CFDE_CSSSelector*> m_Selectors;