Use override in more classes in fpdfsdk/

R=tsepez@chromium.org

Review URL: https://codereview.chromium.org/1287193005 .

13 files changed, 95 insertions, 91 deletions

diff --git a/fpdfsdk/src/fpdf_dataavail.cpp b/fpdfsdk/src/fpdf_dataavail.cpp
index 8f9638d90a..cc0833bc98 100644
--- a/fpdfsdk/src/fpdf_dataavail.cpp
+++ b/fpdfsdk/src/fpdf_dataavail.cpp
@@ -11,10 +11,12 @@ extern void ProcessParseError(FX_DWORD err_code);
 class CFPDF_FileAvailWrap : public IFX_FileAvail {
  public:
   CFPDF_FileAvailWrap() { m_pfileAvail = NULL; }
+  ~CFPDF_FileAvailWrap() override {}
 
   void Set(FX_FILEAVAIL* pfileAvail) { m_pfileAvail = pfileAvail; }
 
-  virtual FX_BOOL IsDataAvail(FX_FILESIZE offset, FX_DWORD size) {
+  // IFX_FileAvail
+  FX_BOOL IsDataAvail(FX_FILESIZE offset, FX_DWORD size) override {
     return m_pfileAvail->IsDataAvail(m_pfileAvail, offset, size);
   }
 
@@ -25,17 +27,19 @@ class CFPDF_FileAvailWrap : public IFX_FileAvail {
 class CFPDF_FileAccessWrap : public IFX_FileRead {
  public:
   CFPDF_FileAccessWrap() { m_pFileAccess = NULL; }
+  ~CFPDF_FileAccessWrap() override {}
 
   void Set(FPDF_FILEACCESS* pFile) { m_pFileAccess = pFile; }
 
-  virtual FX_FILESIZE GetSize() { return m_pFileAccess->m_FileLen; }
+  // IFX_FileRead
+  FX_FILESIZE GetSize() override { return m_pFileAccess->m_FileLen; }
 
-  virtual FX_BOOL ReadBlock(void* buffer, FX_FILESIZE offset, size_t size) {
+  FX_BOOL ReadBlock(void* buffer, FX_FILESIZE offset, size_t size) override {
     return m_pFileAccess->m_GetBlock(m_pFileAccess->m_Param, offset,
                                      (uint8_t*)buffer, size);
   }
 
-  virtual void Release() {}
+  void Release() override {}
 
  private:
   FPDF_FILEACCESS* m_pFileAccess;
@@ -43,12 +47,14 @@ class CFPDF_FileAccessWrap : public IFX_FileRead {
 
 class CFPDF_DownloadHintsWrap : public IFX_DownloadHints {
  public:
-  CFPDF_DownloadHintsWrap(FX_DOWNLOADHINTS* pDownloadHints) {
+  explicit CFPDF_DownloadHintsWrap(FX_DOWNLOADHINTS* pDownloadHints) {
     m_pDownloadHints = pDownloadHints;
   }
+  ~CFPDF_DownloadHintsWrap() override {}
 
  public:
-  virtual void AddSegment(FX_FILESIZE offset, FX_DWORD size) {
+  // IFX_DownloadHints
+  void AddSegment(FX_FILESIZE offset, FX_DWORD size) override {
     m_pDownloadHints->AddSegment(m_pDownloadHints, offset, size);
   }
 
diff --git a/fpdfsdk/src/fpdf_sysfontinfo.cpp b/fpdfsdk/src/fpdf_sysfontinfo.cpp
index 804efe3020..a004e86ba1 100644
--- a/fpdfsdk/src/fpdf_sysfontinfo.cpp
+++ b/fpdfsdk/src/fpdf_sysfontinfo.cpp
@@ -10,15 +10,15 @@
 
 class CFX_ExternalFontInfo final : public IFX_SystemFontInfo {
  public:
-  CFX_ExternalFontInfo(FPDF_SYSFONTINFO* pInfo) : m_pInfo(pInfo) {}
+  explicit CFX_ExternalFontInfo(FPDF_SYSFONTINFO* pInfo) : m_pInfo(pInfo) {}
 
-  virtual void Release() override {
+  void Release() override {
     if (m_pInfo->Release)
       m_pInfo->Release(m_pInfo);
     delete this;
   }
 
-  virtual FX_BOOL EnumFontList(CFX_FontMapper* pMapper) override {
+  FX_BOOL EnumFontList(CFX_FontMapper* pMapper) override {
     if (m_pInfo->EnumFonts) {
       m_pInfo->EnumFonts(m_pInfo, pMapper);
       return TRUE;
@@ -26,34 +26,34 @@ class CFX_ExternalFontInfo final : public IFX_SystemFontInfo {
     return FALSE;
   }
 
-  virtual void* MapFont(int weight,
-                        FX_BOOL bItalic,
-                        int charset,
-                        int pitch_family,
-                        const FX_CHAR* family,
-                        int& iExact) override {
+  void* MapFont(int weight,
+                FX_BOOL bItalic,
+                int charset,
+                int pitch_family,
+                const FX_CHAR* family,
+                int& iExact) override {
     if (m_pInfo->MapFont)
       return m_pInfo->MapFont(m_pInfo, weight, bItalic, charset, pitch_family,
                               family, &iExact);
     return NULL;
   }
 
-  virtual void* GetFont(const FX_CHAR* family) override {
+  void* GetFont(const FX_CHAR* family) override {
     if (m_pInfo->GetFont)
       return m_pInfo->GetFont(m_pInfo, family);
     return NULL;
   }
 
-  virtual FX_DWORD GetFontData(void* hFont,
-                               FX_DWORD table,
-                               uint8_t* buffer,
-                               FX_DWORD size) override {
+  FX_DWORD GetFontData(void* hFont,
+                       FX_DWORD table,
+                       uint8_t* buffer,
+                       FX_DWORD size) override {
     if (m_pInfo->GetFontData)
       return m_pInfo->GetFontData(m_pInfo, hFont, table, buffer, size);
     return 0;
   }
 
-  virtual FX_BOOL GetFaceName(void* hFont, CFX_ByteString& name) override {
+  FX_BOOL GetFaceName(void* hFont, CFX_ByteString& name) override {
     if (m_pInfo->GetFaceName == NULL)
       return FALSE;
     FX_DWORD size = m_pInfo->GetFaceName(m_pInfo, hFont, NULL, 0);
@@ -66,7 +66,7 @@ class CFX_ExternalFontInfo final : public IFX_SystemFontInfo {
     return TRUE;
   }
 
-  virtual FX_BOOL GetFontCharset(void* hFont, int& charset) override {
+  FX_BOOL GetFontCharset(void* hFont, int& charset) override {
     if (m_pInfo->GetFontCharset) {
       charset = m_pInfo->GetFontCharset(m_pInfo, hFont);
       return TRUE;
@@ -74,13 +74,13 @@ class CFX_ExternalFontInfo final : public IFX_SystemFontInfo {
     return FALSE;
   }
 
-  virtual void DeleteFont(void* hFont) override {
+  void DeleteFont(void* hFont) override {
     if (m_pInfo->DeleteFont)
       m_pInfo->DeleteFont(m_pInfo, hFont);
   }
 
  private:
-  ~CFX_ExternalFontInfo() {}
+  ~CFX_ExternalFontInfo() override {}
 
   FPDF_SYSFONTINFO* const m_pInfo;
 };
diff --git a/fpdfsdk/src/fpdfsave.cpp b/fpdfsdk/src/fpdfsave.cpp
index 54c9253d2e..36553092ee 100644
--- a/fpdfsdk/src/fpdfsave.cpp
+++ b/fpdfsdk/src/fpdfsave.cpp
@@ -18,10 +18,12 @@ class CFX_IFileWrite final : public IFX_StreamWrite {
  public:
   CFX_IFileWrite();
   FX_BOOL Init(FPDF_FILEWRITE* pFileWriteStruct);
-  virtual FX_BOOL WriteBlock(const void* pData, size_t size) override;
-  virtual void Release() override {}
+  FX_BOOL WriteBlock(const void* pData, size_t size) override;
+  void Release() override;
 
  protected:
+  ~CFX_IFileWrite() override {}
+
   FPDF_FILEWRITE* m_pFileWriteStruct;
 };
 
@@ -45,6 +47,10 @@ FX_BOOL CFX_IFileWrite::WriteBlock(const void* pData, size_t size) {
   return TRUE;
 }
 
+void CFX_IFileWrite::Release() {
+  delete this;
+}
+
 FPDF_BOOL _FPDF_Doc_Save(FPDF_DOCUMENT document,
                          FPDF_FILEWRITE* pFileWrite,
                          FPDF_DWORD flags,
@@ -70,7 +76,7 @@ FPDF_BOOL _FPDF_Doc_Save(FPDF_DOCUMENT document,
   pStreamWrite = new CFX_IFileWrite;
   pStreamWrite->Init(pFileWrite);
   bRet = FileMaker.Create(pStreamWrite, flags);
-  delete pStreamWrite;
+  pStreamWrite->Release();
   return bRet;
 }
 
diff --git a/fpdfsdk/src/fpdfview.cpp b/fpdfsdk/src/fpdfview.cpp
index 2700aebddc..a1d5689c79 100644
--- a/fpdfsdk/src/fpdfview.cpp
+++ b/fpdfsdk/src/fpdfview.cpp
@@ -71,9 +71,10 @@ CCodec_ModuleMgr* g_pCodecModule = nullptr;
 class CFontMapper : public IPDF_FontMapper {
  public:
   CFontMapper();
-  virtual ~CFontMapper();
+  ~CFontMapper() override;
 
-  virtual FT_Face FindSubstFont(
+  // IPDF_FontMapper
+  FT_Face FindSubstFont(
       CPDF_Document* pDoc,              // [IN] The PDF document
       const CFX_ByteString& face_name,  // [IN] Original name
       FX_BOOL bTrueType,                // [IN] TrueType or Type1
@@ -82,7 +83,7 @@ class CFontMapper : public IPDF_FontMapper {
       int CharsetCP,    // [IN] code page for charset (see Win32 GetACP())
       FX_BOOL bVertical,
       CPDF_SubstFont* pSubstFont  // [OUT] Subst font data
-      );
+      ) override;
 
   FT_Face m_SysFace;
 };
@@ -204,6 +205,8 @@ class CMemFile final : public IFX_FileRead {
   }
 
  private:
+  ~CMemFile() {}
+
   uint8_t* m_pBuf;
   FX_FILESIZE m_size;
 };
diff --git a/fpdfsdk/src/fsdk_mgr.cpp b/fpdfsdk/src/fsdk_mgr.cpp
index df9a0ff316..67dea80d0d 100644
--- a/fpdfsdk/src/fsdk_mgr.cpp
+++ b/fpdfsdk/src/fsdk_mgr.cpp
@@ -17,81 +17,64 @@
 #include <ctime>
 #endif
 
-// extern CPDFDoc_Environment* g_pFormFillApp;
 class CFX_SystemHandler : public IFX_SystemHandler {
  public:
   CFX_SystemHandler(CPDFDoc_Environment* pEnv) : m_pEnv(pEnv), m_nCharSet(-1) {}
+  ~CFX_SystemHandler() override {}
 
  public:
-  virtual void InvalidateRect(FX_HWND hWnd, FX_RECT rect);
-  virtual void OutputSelectedRect(void* pFormFiller, CPDF_Rect& rect);
-
-  virtual FX_BOOL IsSelectionImplemented();
-
-  virtual CFX_WideString GetClipboardText(FX_HWND hWnd) { return L""; }
-  virtual FX_BOOL SetClipboardText(FX_HWND hWnd, CFX_WideString string) {
+  // IFX_SystemHandler
+  void InvalidateRect(FX_HWND hWnd, FX_RECT rect) override;
+  void OutputSelectedRect(void* pFormFiller, CPDF_Rect& rect) override;
+  FX_BOOL IsSelectionImplemented() override;
+  CFX_WideString GetClipboardText(FX_HWND hWnd) override { return L""; }
+  FX_BOOL SetClipboardText(FX_HWND hWnd, CFX_WideString string) override {
     return FALSE;
   }
-
-  virtual void ClientToScreen(FX_HWND hWnd, int32_t& x, int32_t& y) {}
-  virtual void ScreenToClient(FX_HWND hWnd, int32_t& x, int32_t& y) {}
-
-  /*cursor style
-  FXCT_ARROW
-  FXCT_NESW
-  FXCT_NWSE
-  FXCT_VBEAM
-  FXCT_HBEAM
-  FXCT_HAND
-  */
-  virtual void SetCursor(int32_t nCursorType);
-
-  virtual FX_HMENU CreatePopupMenu() { return NULL; }
-  virtual FX_BOOL AppendMenuItem(FX_HMENU hMenu,
-                                 int32_t nIDNewItem,
-                                 CFX_WideString string) {
+  void ClientToScreen(FX_HWND hWnd, int32_t& x, int32_t& y) override {}
+  void ScreenToClient(FX_HWND hWnd, int32_t& x, int32_t& y) override {}
+  void SetCursor(int32_t nCursorType) override;
+  FX_HMENU CreatePopupMenu() override { return NULL; }
+  FX_BOOL AppendMenuItem(FX_HMENU hMenu,
+                         int32_t nIDNewItem,
+                         CFX_WideString string) override {
     return FALSE;
   }
-  virtual FX_BOOL EnableMenuItem(FX_HMENU hMenu,
-                                 int32_t nIDItem,
-                                 FX_BOOL bEnabled) {
+  FX_BOOL EnableMenuItem(FX_HMENU hMenu,
+                         int32_t nIDItem,
+                         FX_BOOL bEnabled) override {
     return FALSE;
   }
-  virtual int32_t TrackPopupMenu(FX_HMENU hMenu,
-                                 int32_t x,
-                                 int32_t y,
-                                 FX_HWND hParent) {
+  int32_t TrackPopupMenu(FX_HMENU hMenu,
+                         int32_t x,
+                         int32_t y,
+                         FX_HWND hParent) override {
     return -1;
   }
-  virtual void DestroyMenu(FX_HMENU hMenu) {}
-
-  virtual CFX_ByteString GetNativeTrueTypeFont(int32_t nCharset);
-  virtual FX_BOOL FindNativeTrueTypeFont(int32_t nCharset,
-                                         CFX_ByteString sFontFaceName);
-  virtual CPDF_Font* AddNativeTrueTypeFontToPDF(CPDF_Document* pDoc,
-                                                CFX_ByteString sFontFaceName,
-                                                uint8_t nCharset);
-
-  virtual int32_t SetTimer(int32_t uElapse, TimerCallback lpTimerFunc);
-  virtual void KillTimer(int32_t nID);
-
-  virtual FX_BOOL IsSHIFTKeyDown(FX_DWORD nFlag) {
+  void DestroyMenu(FX_HMENU hMenu) override {}
+  CFX_ByteString GetNativeTrueTypeFont(int32_t nCharset) override;
+  FX_BOOL FindNativeTrueTypeFont(int32_t nCharset,
+                                 CFX_ByteString sFontFaceName) override;
+  CPDF_Font* AddNativeTrueTypeFontToPDF(CPDF_Document* pDoc,
+                                        CFX_ByteString sFontFaceName,
+                                        uint8_t nCharset) override;
+  int32_t SetTimer(int32_t uElapse, TimerCallback lpTimerFunc) override;
+  void KillTimer(int32_t nID) override;
+  FX_BOOL IsSHIFTKeyDown(FX_DWORD nFlag) override {
     return m_pEnv->FFI_IsSHIFTKeyDown(nFlag);
   }
-  virtual FX_BOOL IsCTRLKeyDown(FX_DWORD nFlag) {
+  FX_BOOL IsCTRLKeyDown(FX_DWORD nFlag) override {
     return m_pEnv->FFI_IsCTRLKeyDown(nFlag);
   }
-  virtual FX_BOOL IsALTKeyDown(FX_DWORD nFlag) {
+  FX_BOOL IsALTKeyDown(FX_DWORD nFlag) override {
     return m_pEnv->FFI_IsALTKeyDown(nFlag);
   }
-  virtual FX_BOOL IsINSERTKeyDown(FX_DWORD nFlag) {
+  FX_BOOL IsINSERTKeyDown(FX_DWORD nFlag) override {
     return m_pEnv->FFI_IsINSERTKeyDown(nFlag);
   }
-
-  virtual FX_SYSTEMTIME GetLocalTime();
-
-  virtual int32_t GetCharSet() { return m_nCharSet; }
-  virtual void SetCharSet(int32_t nCharSet) { m_nCharSet = nCharSet; }
+  FX_SYSTEMTIME GetLocalTime() override;
+  int32_t GetCharSet() override { return m_nCharSet; }
+  void SetCharSet(int32_t nCharSet) override { m_nCharSet = nCharSet; }
 
  private:
   CPDFDoc_Environment* m_pEnv;
diff --git a/fpdfsdk/src/fsdk_rendercontext.cpp b/fpdfsdk/src/fsdk_rendercontext.cpp
index 1320824236..e282d01db7 100644
--- a/fpdfsdk/src/fsdk_rendercontext.cpp
+++ b/fpdfsdk/src/fsdk_rendercontext.cpp
@@ -36,6 +36,9 @@ IFSDK_PAUSE_Adapter::IFSDK_PAUSE_Adapter(IFSDK_PAUSE* IPause) {
   m_IPause = IPause;
 }
 
+IFSDK_PAUSE_Adapter::~IFSDK_PAUSE_Adapter() {
+}
+
 FX_BOOL IFSDK_PAUSE_Adapter::NeedToPauseNow() {
   if (m_IPause->NeedToPauseNow) {
     return m_IPause->NeedToPauseNow(m_IPause);
diff --git a/fpdfsdk/src/javascript/JS_Context.cpp b/fpdfsdk/src/javascript/JS_Context.cpp
index 6e935e8647..3fedd13b21 100644
--- a/fpdfsdk/src/javascript/JS_Context.cpp
+++ b/fpdfsdk/src/javascript/JS_Context.cpp
@@ -19,7 +19,7 @@ CJS_Context::CJS_Context(CJS_Runtime* pRuntime)
   m_pEventHandler = new CJS_EventHandler(this);
 }
 
-CJS_Context::~CJS_Context(void) {
+CJS_Context::~CJS_Context() {
   delete m_pEventHandler;
 }
 
diff --git a/fpdfsdk/src/javascript/JS_Object.cpp b/fpdfsdk/src/javascript/JS_Object.cpp
index 96e1d1d564..02978982d8 100644
--- a/fpdfsdk/src/javascript/JS_Object.cpp
+++ b/fpdfsdk/src/javascript/JS_Object.cpp
@@ -89,7 +89,7 @@ CJS_Object::CJS_Object(JSFXObject pObject) : m_pEmbedObj(NULL) {
   m_pObject.Reset(m_pIsolate, pObject);
 };
 
-CJS_Object::~CJS_Object(void) {
+CJS_Object::~CJS_Object() {
   m_pObject.Reset();
 };
 
diff --git a/fpdfsdk/src/javascript/app.cpp b/fpdfsdk/src/javascript/app.cpp
index 1b84508fd6..8d895ab260 100644
--- a/fpdfsdk/src/javascript/app.cpp
+++ b/fpdfsdk/src/javascript/app.cpp
@@ -112,7 +112,7 @@ IMPLEMENT_JS_CLASS(CJS_App, app)
 app::app(CJS_Object* pJSObject)
     : CJS_EmbedObj(pJSObject), m_bCalculate(true), m_bRuntimeHighLight(false) {}
 
-app::~app(void) {
+app::~app() {
   for (int i = 0, sz = m_aTimer.GetSize(); i < sz; i++)
     delete m_aTimer[i];
 
diff --git a/fpdfsdk/src/javascript/color.cpp b/fpdfsdk/src/javascript/color.cpp
index 0659ab94a4..c6d13fc284 100644
--- a/fpdfsdk/src/javascript/color.cpp
+++ b/fpdfsdk/src/javascript/color.cpp
@@ -65,7 +65,8 @@ color::color(CJS_Object* pJSObject) : CJS_EmbedObj(pJSObject) {
   m_crLTGray = CPWL_Color(COLORTYPE_GRAY, 0.75);
 }
 
-color::~color(void) {}
+color::~color() {
+}
 
 void color::ConvertPWLColorToArray(const CPWL_Color& color, CJS_Array& array) {
   switch (color.nColorType) {
diff --git a/fpdfsdk/src/javascript/event.cpp b/fpdfsdk/src/javascript/event.cpp
index 4bcdcce3a0..492f225d18 100644
--- a/fpdfsdk/src/javascript/event.cpp
+++ b/fpdfsdk/src/javascript/event.cpp
@@ -50,7 +50,8 @@ IMPLEMENT_JS_CLASS(CJS_Event, event)
 
 event::event(CJS_Object* pJsObject) : CJS_EmbedObj(pJsObject) {}
 
-event::~event(void) {}
+event::~event() {
+}
 
 FX_BOOL event::change(IFXJS_Context* cc,
                       CJS_PropValue& vp,
diff --git a/fpdfsdk/src/javascript/global.cpp b/fpdfsdk/src/javascript/global.cpp
index ee0591b950..17aa00e31d 100644
--- a/fpdfsdk/src/javascript/global.cpp
+++ b/fpdfsdk/src/javascript/global.cpp
@@ -106,7 +106,7 @@ FX_BOOL CJS_Global::InitInstance(IFXJS_Context* cc) {
 global_alternate::global_alternate(CJS_Object* pJSObject)
     : CJS_EmbedObj(pJSObject), m_pApp(NULL) {}
 
-global_alternate::~global_alternate(void) {
+global_alternate::~global_alternate() {
   DestroyGlobalPersisitentVariables();
   m_pApp->GetRuntimeFactory()->ReleaseGlobalData();
 }
diff --git a/fpdfsdk/src/javascript/util.cpp b/fpdfsdk/src/javascript/util.cpp
index c735b971dc..85092dab17 100644
--- a/fpdfsdk/src/javascript/util.cpp
+++ b/fpdfsdk/src/javascript/util.cpp
@@ -48,7 +48,8 @@ IMPLEMENT_JS_CLASS(CJS_Util, util)
 
 util::util(CJS_Object* pJSObject) : CJS_EmbedObj(pJSObject) {}
 
-util::~util(void) {}
+util::~util() {
+}
 
 struct stru_TbConvert {
   const FX_WCHAR* lpszJSMark;