Move font source into CFGAS_FontMgr

This CL moves the font source into the font manager so it doesn't need
to be stored by each caller (and removes the platform dependant code).
The |EnumFonts| method is exposed on the CFGAS_FontMgr so the caller can
clear the manager if the enumeration fails.

Change-Id: Iecce3d2e09ff01152b7bb79a34fe2b728320da9c
Reviewed-on: https://pdfium-review.googlesource.com/14816
Reviewed-by: Henrique Nakashima <hnakashima@chromium.org>
Commit-Queue: dsinclair <dsinclair@chromium.org>

2 files changed, 11 insertions, 29 deletions

diff --git a/xfa/fgas/font/cfgas_fontmgr.cpp b/xfa/fgas/font/cfgas_fontmgr.cpp
index 2175a23288..df7c36fd53 100644
--- a/xfa/fgas/font/cfgas_fontmgr.cpp
+++ b/xfa/fgas/font/cfgas_fontmgr.cpp
@@ -184,13 +184,8 @@ uint32_t GetFontFamilyHash(const wchar_t* pszFontFamily,
 
 }  // namespace
 
-std::unique_ptr<CFGAS_FontMgr> CFGAS_FontMgr::Create(
-    FX_LPEnumAllFonts pEnumerator) {
-  return pdfium::MakeUnique<CFGAS_FontMgr>(pEnumerator);
-}
-
-CFGAS_FontMgr::CFGAS_FontMgr(FX_LPEnumAllFonts pEnumerator)
-    : m_pEnumerator(pEnumerator), m_FontFaces(100) {
+CFGAS_FontMgr::CFGAS_FontMgr()
+    : m_pEnumerator(FX_GetDefFontEnumerator()), m_FontFaces(100) {
   if (m_pEnumerator)
     m_pEnumerator(&m_FontFaces, nullptr, 0xFEFF);
 }
@@ -688,19 +683,8 @@ RetainPtr<CFX_CRTFileAccess> CFX_FontSourceEnum_File::GetNext() {
   return pAccess;
 }
 
-std::unique_ptr<CFGAS_FontMgr> CFGAS_FontMgr::Create(
-    CFX_FontSourceEnum_File* pFontEnum) {
-  if (!pFontEnum)
-    return nullptr;
-
-  auto pFontMgr = pdfium::MakeUnique<CFGAS_FontMgr>(pFontEnum);
-  if (!pFontMgr->EnumFonts())
-    return nullptr;
-  return pFontMgr;
-}
-
-CFGAS_FontMgr::CFGAS_FontMgr(CFX_FontSourceEnum_File* pFontEnum)
-    : m_pFontSource(pFontEnum) {}
+CFGAS_FontMgr::CFGAS_FontMgr()
+    : m_pFontSource(pdfium::MakeUnique<CFX_FontSourceEnum_File>()) {}
 
 CFGAS_FontMgr::~CFGAS_FontMgr() {}
 
diff --git a/xfa/fgas/font/cfgas_fontmgr.h b/xfa/fgas/font/cfgas_fontmgr.h
index 9424cd9657..d0d73bb688 100644
--- a/xfa/fgas/font/cfgas_fontmgr.h
+++ b/xfa/fgas/font/cfgas_fontmgr.h
@@ -83,9 +83,7 @@ FX_LPEnumAllFonts FX_GetDefFontEnumerator();
 
 class CFGAS_FontMgr : public Observable<CFGAS_FontMgr> {
  public:
-  static std::unique_ptr<CFGAS_FontMgr> Create(FX_LPEnumAllFonts pEnumerator);
-
-  explicit CFGAS_FontMgr(FX_LPEnumAllFonts pEnumerator);
+  CFGAS_FontMgr();
   ~CFGAS_FontMgr();
 
   RetainPtr<CFGAS_GEFont> GetFontByCodePage(uint16_t wCodePage,
@@ -99,6 +97,8 @@ class CFGAS_FontMgr : public Observable<CFGAS_FontMgr> {
                                    uint16_t wCodePage);
   void RemoveFont(const RetainPtr<CFGAS_GEFont>& pFont);
 
+  bool EnumFonts() { return true; }
+
  private:
   RetainPtr<CFGAS_GEFont> LoadFont(const RetainPtr<CFGAS_GEFont>& pSrcFont,
                                    uint32_t dwFontStyles,
@@ -181,10 +181,7 @@ class CFX_FontSourceEnum_File {
 
 class CFGAS_FontMgr : public Observable<CFGAS_FontMgr> {
  public:
-  static std::unique_ptr<CFGAS_FontMgr> Create(
-      CFX_FontSourceEnum_File* pFontEnum);
-
-  explicit CFGAS_FontMgr(CFX_FontSourceEnum_File* pFontEnum);
+  CFGAS_FontMgr();
   ~CFGAS_FontMgr();
 
   RetainPtr<CFGAS_GEFont> GetFontByCodePage(uint16_t wCodePage,
@@ -198,8 +195,9 @@ class CFGAS_FontMgr : public Observable<CFGAS_FontMgr> {
                                    uint16_t wCodePage);
   void RemoveFont(const RetainPtr<CFGAS_GEFont>& pFont);
 
- private:
   bool EnumFonts();
+
+ private:
   bool EnumFontsFromFontMapper();
   bool EnumFontsFromFiles();
   void RegisterFace(FXFT_Face pFace, const WideString* pFaceName);
@@ -234,7 +232,7 @@ class CFGAS_FontMgr : public Observable<CFGAS_FontMgr> {
   RetainPtr<IFX_SeekableReadStream> CreateFontStream(
       const ByteString& bsFaceName);
 
-  CFX_FontSourceEnum_File* const m_pFontSource;
+  std::unique_ptr<CFX_FontSourceEnum_File> m_pFontSource;
   std::vector<std::unique_ptr<CFX_FontDescriptor>> m_InstalledFonts;
   std::map<uint32_t, std::unique_ptr<std::vector<CFX_FontDescriptorInfo>>>
       m_Hash2CandidateList;