Merge to XFA: Remove CFX_PtrArray usage in fpdfsdk.

TBR=tsepez@chromium.org

Review URL: https://codereview.chromium.org/1430213002 .

(cherry picked from commit 8deeacd23872ecc132a0a678e344a018b5114a3a)

Review URL: https://codereview.chromium.org/1416113010 .

3 files changed, 126 insertions, 139 deletions

diff --git a/core/include/fpdfdoc/fpdf_doc.h b/core/include/fpdfdoc/fpdf_doc.h
index e593471e53..6fcb671826 100644
--- a/core/include/fpdfdoc/fpdf_doc.h
+++ b/core/include/fpdfdoc/fpdf_doc.h
@@ -44,7 +44,7 @@ class CXML_Element;
 
 class CPDF_NameTree {
  public:
-  CPDF_NameTree(CPDF_Dictionary* pRoot) { m_pRoot = pRoot; }
+  explicit CPDF_NameTree(CPDF_Dictionary* pRoot) { m_pRoot = pRoot; }
 
   CPDF_NameTree(CPDF_Document* pDoc, const CFX_ByteStringC& category);
 
@@ -66,7 +66,7 @@ class CPDF_NameTree {
 };
 class CPDF_BookmarkTree {
  public:
-  CPDF_BookmarkTree(CPDF_Document* pDoc) : m_pDocument(pDoc) {}
+  explicit CPDF_BookmarkTree(CPDF_Document* pDoc) : m_pDocument(pDoc) {}
 
   CPDF_Bookmark GetFirstChild(const CPDF_Bookmark& parent) const;
 
@@ -130,7 +130,7 @@ class CPDF_OCContext : public IPDF_OCContext {
  public:
   enum UsageType { View = 0, Design, Print, Export };
 
-  CPDF_OCContext(CPDF_Document* pDoc, UsageType eUsageType = View);
+  explicit CPDF_OCContext(CPDF_Document* pDoc, UsageType eUsageType = View);
   ~CPDF_OCContext() override;
 
   CPDF_Document* GetDocument() const { return m_pDocument; }
@@ -165,15 +165,17 @@ class CPDF_OCContext : public IPDF_OCContext {
 
 class CPDF_ActionFields {
  public:
+  // TODO(thestig): Examine why this cannot be explicit.
   CPDF_ActionFields(const CPDF_Action* pAction) {
     m_pAction = (CPDF_Action*)pAction;
   }
 
+  // TODO(thestig): Replace this.
   operator CPDF_Action*() const { return m_pAction; }
 
   FX_DWORD GetFieldsCount() const;
 
-  void GetAllFields(CFX_PtrArray& fieldObjects) const;
+  std::vector<CPDF_Object*> GetAllFields() const;
 
   CPDF_Object* GetField(FX_DWORD iIndex) const;
 
@@ -263,6 +265,7 @@ class CPDF_Action {
 };
 class CPDF_AAction {
  public:
+  // TODO(thestig): Examine why this cannot be explicit.
   CPDF_AAction(CPDF_Dictionary* pDict = NULL) { m_pDict = pDict; }
 
   operator CPDF_Dictionary*() const { return m_pDict; }
@@ -303,7 +306,7 @@ class CPDF_AAction {
 };
 class CPDF_DocJSActions {
  public:
-  CPDF_DocJSActions(CPDF_Document* pDoc);
+  explicit CPDF_DocJSActions(CPDF_Document* pDoc);
 
   int CountJSActions() const;
 
@@ -316,13 +319,13 @@ class CPDF_DocJSActions {
   CPDF_Document* GetDocument() const { return m_pDocument; }
 
  protected:
-  CPDF_Document* m_pDocument;
+  CPDF_Document* const m_pDocument;
 };
 class CPDF_FileSpec {
  public:
   CPDF_FileSpec();
 
-  CPDF_FileSpec(CPDF_Object* pObj) { m_pObj = pObj; }
+  explicit CPDF_FileSpec(CPDF_Object* pObj) { m_pObj = pObj; }
 
   operator CPDF_Object*() const { return m_pObj; }
 
@@ -473,6 +476,7 @@ class CPDF_AnnotList {
 #define COLORTYPE_CMYK 3
 class CPDF_DefaultAppearance {
  public:
+  // TODO(thestig): Examine why this cannot be explicit.
   CPDF_DefaultAppearance(const CFX_ByteString& csDA = "") { m_csDA = csDA; }
 
   CPDF_DefaultAppearance(const CPDF_DefaultAppearance& cDA) {
@@ -579,8 +583,6 @@ class CPDF_InterForm : public CFX_PrivateData {
 
   void GetAllFieldNames(CFX_WideStringArray& allFieldNames);
 
-  FX_BOOL IsValidFormField(const void* pField);
-
   CPDF_FormField* GetFieldByDict(CPDF_Dictionary* pFieldDict) const;
 
   CPDF_FormControl* GetControlAtPoint(CPDF_Page* pPage,
@@ -644,24 +646,25 @@ class CPDF_InterForm : public CFX_PrivateData {
 
   int GetFormAlignment();
 
-  CPDF_FormField* CheckRequiredFields(const CFX_PtrArray* fields = NULL,
-                                      FX_BOOL bIncludeOrExclude = TRUE) const;
+  CPDF_FormField* CheckRequiredFields(
+      const std::vector<CPDF_FormField*>* fields,
+      bool bIncludeOrExclude) const;
 
   CFDF_Document* ExportToFDF(const CFX_WideStringC& pdf_path,
-                             FX_BOOL bSimpleFileSpec = FALSE) const;
+                             bool bSimpleFileSpec = false) const;
 
   CFDF_Document* ExportToFDF(const CFX_WideStringC& pdf_path,
-                             CFX_PtrArray& fields,
-                             FX_BOOL bIncludeOrExclude = TRUE,
-                             FX_BOOL bSimpleFileSpec = FALSE) const;
+                             const std::vector<CPDF_FormField*>& fields,
+                             bool bIncludeOrExclude = true,
+                             bool bSimpleFileSpec = false) const;
 
   FX_BOOL ImportFromFDF(const CFDF_Document* pFDFDoc, FX_BOOL bNotify = FALSE);
 
-  FX_BOOL ResetForm(const CFX_PtrArray& fields,
-                    FX_BOOL bIncludeOrExclude = TRUE,
-                    FX_BOOL bNotify = FALSE);
+  bool ResetForm(const std::vector<CPDF_FormField*>& fields,
+                 bool bIncludeOrExclude = true,
+                 bool bNotify = false);
 
-  FX_BOOL ResetForm(FX_BOOL bNotify = FALSE);
+  bool ResetForm(bool bNotify = false);
 
   CPDF_FormNotify* GetFormNotify() const { return m_pFormNotify; }
 
@@ -891,6 +894,7 @@ CPDF_Object* FPDF_GetFieldAttr(CPDF_Dictionary* pFieldDict,
                                int nLevel = 0);
 class CPDF_IconFit {
  public:
+  // TODO(thestig): Examine why this cannot be explicit.
   CPDF_IconFit(CPDF_Dictionary* pDict = NULL) { m_pDict = pDict; }
 
   operator CPDF_Dictionary*() const { return m_pDict; }
@@ -1064,7 +1068,7 @@ class CPDF_FormNotify {
 FX_BOOL FPDF_GenerateAP(CPDF_Document* pDoc, CPDF_Dictionary* pAnnotDict);
 class CPDF_PageLabel {
  public:
-  CPDF_PageLabel(CPDF_Document* pDocument) { m_pDocument = pDocument; }
+  explicit CPDF_PageLabel(CPDF_Document* pDocument) { m_pDocument = pDocument; }
 
   CFX_WideString GetLabel(int nPage) const;
 
@@ -1089,7 +1093,7 @@ class CPDF_Metadata {
 
 class CPDF_ViewerPreferences {
  public:
-  CPDF_ViewerPreferences(CPDF_Document* pDoc);
+  explicit CPDF_ViewerPreferences(CPDF_Document* pDoc);
 
   ~CPDF_ViewerPreferences();
 
@@ -1104,10 +1108,12 @@ class CPDF_ViewerPreferences {
   CFX_ByteString Duplex() const;
 
  protected:
-  CPDF_Document* m_pDoc;
+  CPDF_Document* const m_pDoc;
 };
+
 class CPDF_ApSettings {
  public:
+  // TODO(thestig): Examine why this cannot be explicit.
   CPDF_ApSettings(CPDF_Dictionary* pDict = NULL) { m_pDict = pDict; }
 
   operator CPDF_Dictionary*() const { return m_pDict; }
diff --git a/core/src/fpdfdoc/doc_action.cpp b/core/src/fpdfdoc/doc_action.cpp
index d685f64cae..3d439ff570 100644
--- a/core/src/fpdfdoc/doc_action.cpp
+++ b/core/src/fpdfdoc/doc_action.cpp
@@ -111,37 +111,39 @@ FX_DWORD CPDF_ActionFields::GetFieldsCount() const {
     return pArray->GetCount();
   return 0;
 }
-void CPDF_ActionFields::GetAllFields(CFX_PtrArray& fieldObjects) const {
-  fieldObjects.RemoveAll();
-  if (m_pAction == NULL) {
-    return;
-  }
+
+std::vector<CPDF_Object*> CPDF_ActionFields::GetAllFields() const {
+  std::vector<CPDF_Object*> fields;
+  if (!m_pAction)
+    return fields;
+
   CPDF_Dictionary* pDict = m_pAction->GetDict();
-  if (pDict == NULL) {
-    return;
-  }
+  if (!pDict)
+    return fields;
+
   CFX_ByteString csType = pDict->GetString("S");
-  CPDF_Object* pFields = NULL;
-  if (csType == "Hide") {
+  CPDF_Object* pFields;
+  if (csType == "Hide")
     pFields = pDict->GetElementValue("T");
-  } else {
+  else
     pFields = pDict->GetArray("Fields");
-  }
   if (!pFields)
-    return;
+    return fields;
 
   if (pFields->IsDictionary() || pFields->IsString()) {
-    fieldObjects.Add(pFields);
+    fields.push_back(pFields);
   } else if (CPDF_Array* pArray = pFields->AsArray()) {
     FX_DWORD iCount = pArray->GetCount();
-    for (FX_DWORD i = 0; i < iCount; i++) {
+    for (FX_DWORD i = 0; i < iCount; ++i) {
       CPDF_Object* pObj = pArray->GetElementValue(i);
-      if (pObj != NULL) {
-        fieldObjects.Add(pObj);
+      if (pObj) {
+        fields.push_back(pObj);
       }
     }
   }
+  return fields;
 }
+
 CPDF_Object* CPDF_ActionFields::GetField(FX_DWORD iIndex) const {
   if (m_pAction == NULL) {
     return NULL;
@@ -291,9 +293,9 @@ CPDF_Action CPDF_AAction::GetNextAction(FX_POSITION& pos,
   eType = (AActionType)i;
   return CPDF_Action(pDict);
 }
-CPDF_DocJSActions::CPDF_DocJSActions(CPDF_Document* pDoc) {
-  m_pDocument = pDoc;
-}
+
+CPDF_DocJSActions::CPDF_DocJSActions(CPDF_Document* pDoc) : m_pDocument(pDoc) {}
+
 int CPDF_DocJSActions::CountJSActions() const {
   ASSERT(m_pDocument != NULL);
   CPDF_NameTree name_tree(m_pDocument, FX_BSTRC("JavaScript"));
diff --git a/core/src/fpdfdoc/doc_form.cpp b/core/src/fpdfdoc/doc_form.cpp
index 5cc2a66a89..8d8a836cab 100644
--- a/core/src/fpdfdoc/doc_form.cpp
+++ b/core/src/fpdfdoc/doc_form.cpp
@@ -9,9 +9,9 @@
 
 const int nMaxRecursion = 32;
 
-class _CFieldNameExtractor {
+class CFieldNameExtractor {
  public:
-  _CFieldNameExtractor(const CFX_WideString& full_name) {
+  explicit CFieldNameExtractor(const CFX_WideString& full_name) {
     m_pStart = full_name.c_str();
     m_pEnd = m_pStart + full_name.GetLength();
     m_pCur = m_pStart;
@@ -151,7 +151,7 @@ void CFieldTree::SetField(const CFX_WideString& full_name,
   if (full_name == L"") {
     return;
   }
-  _CFieldNameExtractor name_extractor(full_name);
+  CFieldNameExtractor name_extractor(full_name);
   const FX_WCHAR* pName;
   FX_STRSIZE nLength;
   name_extractor.GetNext(pName, nLength);
@@ -173,7 +173,7 @@ CPDF_FormField* CFieldTree::GetField(const CFX_WideString& full_name) {
   if (full_name == L"") {
     return NULL;
   }
-  _CFieldNameExtractor name_extractor(full_name);
+  CFieldNameExtractor name_extractor(full_name);
   const FX_WCHAR* pName;
   FX_STRSIZE nLength;
   name_extractor.GetNext(pName, nLength);
@@ -190,7 +190,7 @@ CPDF_FormField* CFieldTree::RemoveField(const CFX_WideString& full_name) {
   if (full_name == L"") {
     return NULL;
   }
-  _CFieldNameExtractor name_extractor(full_name);
+  CFieldNameExtractor name_extractor(full_name);
   const FX_WCHAR* pName;
   FX_STRSIZE nLength;
   name_extractor.GetNext(pName, nLength);
@@ -219,7 +219,7 @@ CFieldTree::_Node* CFieldTree::FindNode(const CFX_WideString& full_name) {
   if (full_name == L"") {
     return NULL;
   }
-  _CFieldNameExtractor name_extractor(full_name);
+  CFieldNameExtractor name_extractor(full_name);
   const FX_WCHAR* pName;
   FX_STRSIZE nLength;
   name_extractor.GetNext(pName, nLength);
@@ -765,19 +765,7 @@ void CPDF_InterForm::GetAllFieldNames(CFX_WideStringArray& allFieldNames) {
     }
   }
 }
-FX_BOOL CPDF_InterForm::IsValidFormField(const void* pField) {
-  if (pField == NULL) {
-    return FALSE;
-  }
-  int nCount = m_pFieldTree->m_Root.CountFields();
-  for (int i = 0; i < nCount; i++) {
-    CPDF_FormField* pFormField = m_pFieldTree->m_Root.GetField(i);
-    if (pField == pFormField) {
-      return TRUE;
-    }
-  }
-  return FALSE;
-}
+
 CPDF_FormField* CPDF_InterForm::GetFieldByDict(
     CPDF_Dictionary* pFieldDict) const {
   if (pFieldDict == NULL) {
@@ -946,58 +934,45 @@ int CPDF_InterForm::GetFormAlignment() {
   }
   return m_pFormDict->GetInteger("Q", 0);
 }
-FX_BOOL CPDF_InterForm::ResetForm(const CFX_PtrArray& fields,
-                                  FX_BOOL bIncludeOrExclude,
-                                  FX_BOOL bNotify) {
-  if (bNotify && m_pFormNotify != NULL) {
-    int iRet = m_pFormNotify->BeforeFormReset(this);
-    if (iRet < 0) {
-      return FALSE;
-    }
-  }
+
+bool CPDF_InterForm::ResetForm(const std::vector<CPDF_FormField*>& fields,
+                               bool bIncludeOrExclude,
+                               bool bNotify) {
+  if (bNotify && m_pFormNotify && m_pFormNotify->BeforeFormReset(this) < 0)
+    return false;
+
   int nCount = m_pFieldTree->m_Root.CountFields();
-  for (int i = 0; i < nCount; i++) {
+  for (int i = 0; i < nCount; ++i) {
     CPDF_FormField* pField = m_pFieldTree->m_Root.GetField(i);
-    if (pField == NULL) {
+    if (!pField)
       continue;
-    }
-    FX_BOOL bFind = FALSE;
-    int iCount = fields.GetSize();
-    for (int i = 0; i < iCount; i++) {
-      if (pField == (CPDF_FormField*)fields[i]) {
-        bFind = TRUE;
-        break;
-      }
-    }
-    if ((bIncludeOrExclude && bFind) || (!bIncludeOrExclude && !bFind)) {
+
+    auto it = std::find(fields.begin(), fields.end(), pField);
+    if (bIncludeOrExclude == (it != fields.end()))
       pField->ResetField(bNotify);
-    }
   }
-  if (bNotify && m_pFormNotify != NULL) {
+  if (bNotify && m_pFormNotify)
     m_pFormNotify->AfterFormReset(this);
-  }
-  return TRUE;
+  return true;
 }
-FX_BOOL CPDF_InterForm::ResetForm(FX_BOOL bNotify) {
-  if (bNotify && m_pFormNotify != NULL) {
-    int iRet = m_pFormNotify->BeforeFormReset(this);
-    if (iRet < 0) {
-      return FALSE;
-    }
-  }
+
+bool CPDF_InterForm::ResetForm(bool bNotify) {
+  if (bNotify && m_pFormNotify && m_pFormNotify->BeforeFormReset(this) < 0)
+    return false;
+
   int nCount = m_pFieldTree->m_Root.CountFields();
-  for (int i = 0; i < nCount; i++) {
+  for (int i = 0; i < nCount; ++i) {
     CPDF_FormField* pField = m_pFieldTree->m_Root.GetField(i);
-    if (pField == NULL) {
+    if (!pField)
       continue;
-    }
+
     pField->ResetField(bNotify);
   }
-  if (bNotify && m_pFormNotify != NULL) {
+  if (bNotify && m_pFormNotify)
     m_pFormNotify->AfterFormReset(this);
-  }
-  return TRUE;
+  return true;
 }
+
 void CPDF_InterForm::LoadField(CPDF_Dictionary* pFieldDict, int nLevel) {
   if (nLevel > nMaxRecursion) {
     return;
@@ -1126,52 +1101,58 @@ CPDF_FormControl* CPDF_InterForm::AddControl(const CPDF_FormField* pField,
   ((CPDF_FormField*)pField)->m_ControlList.Add(pControl);
   return pControl;
 }
+
 CPDF_FormField* CPDF_InterForm::CheckRequiredFields(
-    const CFX_PtrArray* fields,
-    FX_BOOL bIncludeOrExclude) const {
+    const std::vector<CPDF_FormField*>* fields,
+    bool bIncludeOrExclude) const {
   int nCount = m_pFieldTree->m_Root.CountFields();
-  for (int i = 0; i < nCount; i++) {
+  for (int i = 0; i < nCount; ++i) {
     CPDF_FormField* pField = m_pFieldTree->m_Root.GetField(i);
-    if (pField == NULL) {
+    if (!pField)
       continue;
-    }
+
     int32_t iType = pField->GetType();
     if (iType == CPDF_FormField::PushButton ||
         iType == CPDF_FormField::CheckBox || iType == CPDF_FormField::ListBox) {
       continue;
     }
     FX_DWORD dwFlags = pField->GetFieldFlags();
-    if (dwFlags & 0x04) {
+    // TODO(thestig): Look up these magic numbers and add constants for them.
+    if (dwFlags & 0x04)
       continue;
+
+    bool bFind = true;
+    if (fields) {
+      auto it = std::find(fields->begin(), fields->end(), pField);
+      bFind = (it != fields->end());
     }
-    FX_BOOL bFind = TRUE;
-    if (fields != NULL) {
-      bFind = fields->Find(pField, 0) >= 0;
-    }
-    if ((bIncludeOrExclude && bFind) || (!bIncludeOrExclude && !bFind)) {
+    if (bIncludeOrExclude == bFind) {
       CPDF_Dictionary* pFieldDict = pField->m_pDict;
       if ((dwFlags & 0x02) != 0 && pFieldDict->GetString("V").IsEmpty()) {
         return pField;
       }
     }
   }
-  return NULL;
+  return nullptr;
 }
+
 CFDF_Document* CPDF_InterForm::ExportToFDF(const CFX_WideStringC& pdf_path,
-                                           FX_BOOL bSimpleFileSpec) const {
-  CFX_PtrArray fields;
+                                           bool bSimpleFileSpec) const {
+  std::vector<CPDF_FormField*> fields;
   int nCount = m_pFieldTree->m_Root.CountFields();
-  for (int i = 0; i < nCount; i++) {
-    CPDF_FormField* pField = m_pFieldTree->m_Root.GetField(i);
-    fields.Add(pField);
-  }
-  return ExportToFDF(pdf_path, fields, TRUE, bSimpleFileSpec);
+  for (int i = 0; i < nCount; ++i)
+    fields.push_back(m_pFieldTree->m_Root.GetField(i));
+  return ExportToFDF(pdf_path, fields, true, bSimpleFileSpec);
 }
+
+// TODO(thestig): Fix this.
 CFX_WideString FILESPEC_EncodeFileName(const CFX_WideStringC& filepath);
-CFDF_Document* CPDF_InterForm::ExportToFDF(const CFX_WideStringC& pdf_path,
-                                           CFX_PtrArray& fields,
-                                           FX_BOOL bIncludeOrExclude,
-                                           FX_BOOL bSimpleFileSpec) const {
+
+CFDF_Document* CPDF_InterForm::ExportToFDF(
+    const CFX_WideStringC& pdf_path,
+    const std::vector<CPDF_FormField*>& fields,
+    bool bIncludeOrExclude,
+    bool bSimpleFileSpec) const {
   CFDF_Document* pDoc = CFDF_Document::CreateNewDoc();
   if (pDoc == NULL) {
     return NULL;
@@ -1201,23 +1182,23 @@ CFDF_Document* CPDF_InterForm::ExportToFDF(const CFX_WideStringC& pdf_path,
       continue;
     }
     FX_DWORD dwFlags = pField->GetFieldFlags();
-    if (dwFlags & 0x04) {
+    if (dwFlags & 0x04)
       continue;
-    }
-    FX_BOOL bFind = fields.Find(pField, 0) >= 0;
-    if ((bIncludeOrExclude && bFind) || (!bIncludeOrExclude && !bFind)) {
-      if ((dwFlags & 0x02) != 0 && pField->m_pDict->GetString("V").IsEmpty()) {
+
+    auto it = std::find(fields.begin(), fields.end(), pField);
+    if (bIncludeOrExclude == (it != fields.end())) {
+      if ((dwFlags & 0x02) != 0 && pField->m_pDict->GetString("V").IsEmpty())
         continue;
-      }
+
       CFX_WideString fullname = GetFullName(pField->GetFieldDict());
       CPDF_Dictionary* pFieldDict = CPDF_Dictionary::Create();
-      if (pFieldDict == NULL) {
-        return NULL;
-      }
+      if (!pFieldDict)
+        return nullptr;
+
       CPDF_String* pString = CPDF_String::Create(fullname);
-      if (pString == NULL) {
+      if (!pString) {
         pFieldDict->Release();
-        return NULL;
+        return nullptr;
       }
       pFieldDict->SetAt("T", pString);
       if (pField->GetType() == CPDF_FormField::CheckBox ||
@@ -1225,16 +1206,14 @@ CFDF_Document* CPDF_InterForm::ExportToFDF(const CFX_WideStringC& pdf_path,
         CFX_WideString csExport = pField->GetCheckValue(FALSE);
         CFX_ByteString csBExport = PDF_EncodeText(csExport);
         CPDF_Object* pOpt = FPDF_GetFieldAttr(pField->m_pDict, "Opt");
-        if (pOpt == NULL) {
-          pFieldDict->SetAtName("V", csBExport);
-        } else {
+        if (pOpt)
           pFieldDict->SetAtString("V", csBExport);
-        }
+        else
+          pFieldDict->SetAtName("V", csBExport);
       } else {
         CPDF_Object* pV = FPDF_GetFieldAttr(pField->m_pDict, "V");
-        if (pV != NULL) {
+        if (pV)
           pFieldDict->SetAt("V", pV->Clone(TRUE));
-        }
       }
       pFields->Add(pFieldDict);
     }