Replace some Release() calls with virtual destructors.

A virtual method that does |delete this| is an anti-pattern.
Some classes can be de-virtualized instead.
Throw in some unique_ptrs and delete dead code for good measure.

R=thestig@chromium.org

Review URL: https://codereview.chromium.org/1192013002.

16 files changed, 123 insertions, 257 deletions

diff --git a/core/include/fxcodec/fx_codec.h b/core/include/fxcodec/fx_codec.h
index e8faf3f78f..e3d69e5dc9 100644
--- a/core/include/fxcodec/fx_codec.h
+++ b/core/include/fxcodec/fx_codec.h
@@ -7,6 +7,7 @@
 #ifndef CORE_INCLUDE_FXCODEC_FX_CODEC_H_
 #define CORE_INCLUDE_FXCODEC_FX_CODEC_H_
 
+#include "../../../third_party/base/nonstd_unique_ptr.h"
 #include "../fxcrt/fx_basic.h"
 #include "fx_codec_def.h"
 #include "fx_codec_provider.h"
@@ -22,63 +23,28 @@ class ICodec_IccModule;
 class ICodec_FlateModule;
 class ICodec_Jbig2Encoder;
 class ICodec_ScanlineDecoder;
+
 class CCodec_ModuleMgr
 {
 public:
-
-    static CCodec_ModuleMgr*	Create();
-
-    void				Destroy();
-
-    void				InitJbig2Decoder();
-
-    void				InitJpxDecoder();
-
-
-    void				InitIccDecoder();
-
-    ICodec_Jbig2Encoder*		CreateJbig2Encoder();
-protected:
     CCodec_ModuleMgr();
-    ~CCodec_ModuleMgr();
-public:
-    ICodec_BasicModule*	GetBasicModule()
-    {
-        return m_pBasicModule;
-    }
-    ICodec_FaxModule*	GetFaxModule()
-    {
-        return m_pFaxModule;
-    }
-    ICodec_JpegModule*	GetJpegModule()
-    {
-        return m_pJpegModule;
-    }
-    ICodec_JpxModule*	GetJpxModule()
-    {
-        return m_pJpxModule;
-    }
-    ICodec_Jbig2Module*	GetJbig2Module()
-    {
-        return m_pJbig2Module;
-    }
-    ICodec_IccModule*	GetIccModule()
-    {
-        return m_pIccModule;
-    }
-    ICodec_FlateModule*	GetFlateModule()
-    {
-        return m_pFlateModule;
-    }
-protected:
-    ICodec_BasicModule*	m_pBasicModule;
-    ICodec_FaxModule*	m_pFaxModule;
-    ICodec_JpegModule*	m_pJpegModule;
-    ICodec_JpxModule*	m_pJpxModule;
-    ICodec_Jbig2Module*	m_pJbig2Module;
-    ICodec_IccModule*	m_pIccModule;
-    ICodec_FlateModule*	m_pFlateModule;
+    ICodec_Jbig2Encoder* CreateJbig2Encoder();
+    ICodec_BasicModule* GetBasicModule() const { return m_pBasicModule.get(); }
+    ICodec_FaxModule* GetFaxModule() const { return m_pFaxModule.get(); }
+    ICodec_JpegModule* GetJpegModule() const { return m_pJpegModule.get(); }
+    ICodec_JpxModule* GetJpxModule() const { return m_pJpxModule.get(); }
+    ICodec_Jbig2Module* GetJbig2Module() const { return m_pJbig2Module.get(); }
+    ICodec_IccModule* GetIccModule() const { return m_pIccModule.get(); }
+    ICodec_FlateModule* GetFlateModule() const { return m_pFlateModule.get(); }
 
+protected:
+    nonstd::unique_ptr<ICodec_BasicModule> m_pBasicModule;
+    nonstd::unique_ptr<ICodec_FaxModule> m_pFaxModule;
+    nonstd::unique_ptr<ICodec_JpegModule> m_pJpegModule;
+    nonstd::unique_ptr<ICodec_JpxModule> m_pJpxModule;
+    nonstd::unique_ptr<ICodec_Jbig2Module> m_pJbig2Module;
+    nonstd::unique_ptr<ICodec_IccModule> m_pIccModule;
+    nonstd::unique_ptr<ICodec_FlateModule> m_pFlateModule;
 };
 class ICodec_BasicModule
 {
diff --git a/core/include/fxcrt/fx_arb.h b/core/include/fxcrt/fx_arb.h
index 3485ce27bb..7ce21e5086 100644
--- a/core/include/fxcrt/fx_arb.h
+++ b/core/include/fxcrt/fx_arb.h
@@ -12,16 +12,14 @@
 class IFX_BidiChar
 {
 public:
-    static IFX_BidiChar*	Create();
-    virtual void			Release() = 0;
-    virtual void			SetPolicy(FX_BOOL bSeparateNeutral = TRUE) = 0;
-    virtual FX_BOOL			AppendChar(FX_WCHAR wch) = 0;
-    virtual FX_BOOL			EndChar() = 0;
-    virtual int32_t		GetBidiInfo(int32_t &iStart, int32_t &iCount) = 0;
-    virtual void			Reset() = 0;
+    static IFX_BidiChar* Create();
+    virtual ~IFX_BidiChar() {}
 
-protected:
-    ~IFX_BidiChar() { }
+    virtual void SetPolicy(FX_BOOL bSeparateNeutral = TRUE) = 0;
+    virtual FX_BOOL AppendChar(FX_WCHAR wch) = 0;
+    virtual FX_BOOL EndChar() = 0;
+    virtual int32_t GetBidiInfo(int32_t &iStart, int32_t &iCount) = 0;
+    virtual void Reset() = 0;
 };
 
 #endif  // CORE_INCLUDE_FXCRT_FX_ARB_H_
diff --git a/core/include/fxge/fx_font.h b/core/include/fxge/fx_font.h
index 49b8f9a974..31794d6743 100644
--- a/core/include/fxge/fx_font.h
+++ b/core/include/fxge/fx_font.h
@@ -424,12 +424,9 @@ FX_BOOL	OutputText(void* dib, int x, int y, CFX_Font* pFont, double font_size,
 class IFX_GSUBTable
 {
 public:
-    virtual void	Release() = 0;
+    static IFX_GSUBTable* Create(CFX_Font* pFont);
+    virtual ~IFX_GSUBTable() { }
     virtual FX_BOOL GetVerticalGlyph(FX_DWORD glyphnum, FX_DWORD* vglyphnum) = 0;
-
-protected:
-     ~IFX_GSUBTable() { }
 };
-IFX_GSUBTable* FXGE_CreateGSUBTable(CFX_Font* pFont);
 
 #endif  // CORE_INCLUDE_FXGE_FX_FONT_H_
diff --git a/core/src/fpdfapi/fpdf_font/ttgsubtable.cpp b/core/src/fpdfapi/fpdf_font/ttgsubtable.cpp
index 3dde7fbdf6..a65359c1d4 100644
--- a/core/src/fpdfapi/fpdf_font/ttgsubtable.cpp
+++ b/core/src/fpdfapi/fpdf_font/ttgsubtable.cpp
@@ -4,9 +4,11 @@
 
 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
 
+#include "../../../../third_party/base/nonstd_unique_ptr.h"
 #include "../../../include/fxge/fx_ge.h"
 #include "../../../include/fxge/fx_freetype.h"
 #include "ttgsubtable.h"
+
 CFX_GlyphMap::CFX_GlyphMap()
 {
 }
@@ -422,7 +424,8 @@ FX_BOOL CFX_GSUBTable::GetVerticalGlyph(FX_DWORD glyphnum, FX_DWORD* vglyphnum)
 {
     return m_GsubImp.GetVerticalGlyph(glyphnum, vglyphnum);
 }
-IFX_GSUBTable* FXGE_CreateGSUBTable(CFX_Font* pFont)
+// static
+IFX_GSUBTable* IFX_GSUBTable::Create(CFX_Font* pFont)
 {
     if (!pFont) {
         return NULL;
@@ -439,11 +442,10 @@ IFX_GSUBTable* FXGE_CreateGSUBTable(CFX_Font* pFont)
     }
     int error = FXFT_Load_Sfnt_Table(pFont->m_Face, FT_MAKE_TAG('G', 'S', 'U', 'B'), 0, pFont->m_pGsubData, NULL);
     if (!error && pFont->m_pGsubData) {
-        CFX_GSUBTable* pGsubTable = new CFX_GSUBTable;
+        nonstd::unique_ptr<CFX_GSUBTable> pGsubTable(new CFX_GSUBTable);
         if (pGsubTable->m_GsubImp.LoadGSUBTable((FT_Bytes)pFont->m_pGsubData)) {
-            return pGsubTable;
+            return pGsubTable.release();
         }
-        pGsubTable->Release();
     }
     return NULL;
 }
diff --git a/core/src/fpdfapi/fpdf_font/ttgsubtable.h b/core/src/fpdfapi/fpdf_font/ttgsubtable.h
index 31eff141b4..69ccc3e453 100644
--- a/core/src/fpdfapi/fpdf_font/ttgsubtable.h
+++ b/core/src/fpdfapi/fpdf_font/ttgsubtable.h
@@ -411,16 +411,10 @@ private:
 class CFX_GSUBTable final : public IFX_GSUBTable
 {
 public:
-    virtual void	Release() override
-    {
-        delete this;
-    }
+    ~CFX_GSUBTable() override {}
     virtual FX_BOOL GetVerticalGlyph(FX_DWORD glyphnum, FX_DWORD* vglyphnum) override;
 
     CFX_CTTGSUBTable m_GsubImp;
-
-private:
-    ~CFX_GSUBTable() { }
 };
 
 #endif  // CORE_SRC_FPDFAPI_FPDF_FONT_TTGSUBTABLE_H_
diff --git a/core/src/fpdftext/fpdf_text.cpp b/core/src/fpdftext/fpdf_text.cpp
index 30934f6820..91d0e41b8d 100644
--- a/core/src/fpdftext/fpdf_text.cpp
+++ b/core/src/fpdftext/fpdf_text.cpp
@@ -4,6 +4,7 @@
 
 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
 
+#include "../../../third_party/base/nonstd_unique_ptr.h"
 #include "../../include/fpdfapi/fpdf_page.h"
 #include "../../include/fpdfapi/fpdf_pageobj.h"
 #include "../../include/fpdftext/fpdf_text.h"
@@ -308,17 +309,14 @@ void NormalizeString(CFX_WideString& str)
         return;
     }
     CFX_WideString sBuffer;
-    IFX_BidiChar* BidiChar = IFX_BidiChar::Create();
-    if (NULL == BidiChar)	{
-        return;
-    }
+    nonstd::unique_ptr<IFX_BidiChar> pBidiChar(IFX_BidiChar::Create());
     CFX_WordArray order;
     FX_BOOL bR2L = FALSE;
     int32_t start = 0, count = 0, i = 0;
     int nR2L = 0, nL2R = 0;
     for (i = 0; i < str.GetLength(); i++) {
-        if(BidiChar->AppendChar(str.GetAt(i))) {
-            int32_t ret = BidiChar->GetBidiInfo(start, count);
+        if(pBidiChar->AppendChar(str.GetAt(i))) {
+            int32_t ret = pBidiChar->GetBidiInfo(start, count);
             order.Add(start);
             order.Add(count);
             order.Add(ret);
@@ -331,8 +329,8 @@ void NormalizeString(CFX_WideString& str)
             }
         }
     }
-    if(BidiChar->EndChar()) {
-        int32_t ret = BidiChar->GetBidiInfo(start, count);
+    if(pBidiChar->EndChar()) {
+        int32_t ret = pBidiChar->GetBidiInfo(start, count);
         order.Add(start);
         order.Add(count);
         order.Add(ret);
@@ -428,7 +426,6 @@ void NormalizeString(CFX_WideString& str)
     }
     str.Empty();
     str += sBuffer;
-    BidiChar->Release();
 }
 static FX_BOOL IsNumber(CFX_WideString& str)
 {
diff --git a/core/src/fpdftext/fpdf_text_int.cpp b/core/src/fpdftext/fpdf_text_int.cpp
index 712de4893c..6755939ca2 100644
--- a/core/src/fpdftext/fpdf_text_int.cpp
+++ b/core/src/fpdftext/fpdf_text_int.cpp
@@ -7,6 +7,7 @@
 #include <ctype.h>
 #include <algorithm>
 
+#include "../../../third_party/base/nonstd_unique_ptr.h"
 #include "../../include/fpdfapi/fpdf_module.h"
 #include "../../include/fpdfapi/fpdf_page.h"
 #include "../../include/fpdfapi/fpdf_pageobj.h"
@@ -1228,7 +1229,7 @@ void CPDF_TextPage::CloseTempLine()
     if (count1 <= 0) {
         return;
     }
-    IFX_BidiChar* BidiChar = IFX_BidiChar::Create();
+    nonstd::unique_ptr<IFX_BidiChar> pBidiChar(IFX_BidiChar::Create());
     CFX_WideString str = m_TempTextBuf.GetWideString();
     CFX_WordArray order;
     FX_BOOL bR2L = FALSE;
@@ -1249,8 +1250,8 @@ void CPDF_TextPage::CloseTempLine()
         } else {
             bPrevSpace = FALSE;
         }
-        if(BidiChar && BidiChar->AppendChar(str.GetAt(i))) {
-            int32_t ret = BidiChar->GetBidiInfo(start, count);
+        if(pBidiChar->AppendChar(str.GetAt(i))) {
+            int32_t ret = pBidiChar->GetBidiInfo(start, count);
             order.Add(start);
             order.Add(count);
             order.Add(ret);
@@ -1263,8 +1264,8 @@ void CPDF_TextPage::CloseTempLine()
             }
         }
     }
-    if(BidiChar && BidiChar->EndChar()) {
-        int32_t ret = BidiChar->GetBidiInfo(start, count);
+    if(pBidiChar->EndChar()) {
+        int32_t ret = pBidiChar->GetBidiInfo(start, count);
         order.Add(start);
         order.Add(count);
         order.Add(ret);
@@ -1361,7 +1362,6 @@ void CPDF_TextPage::CloseTempLine()
     order.RemoveAll();
     m_TempCharList.RemoveAll();
     m_TempTextBuf.Delete(0, m_TempTextBuf.GetLength());
-    BidiChar->Release();
 }
 void CPDF_TextPage::ProcessTextObject(CPDF_TextObject*	pTextObj, const CFX_AffineMatrix& formMatrix, FX_POSITION ObjPos)
 {
@@ -1854,7 +1854,7 @@ FX_BOOL CPDF_TextPage::IsRightToLeft(const CPDF_TextObject* pTextObj,
                                      const CPDF_Font* pFont,
                                      int nItems) const
 {
-    IFX_BidiChar* BidiChar = IFX_BidiChar::Create();
+    nonstd::unique_ptr<IFX_BidiChar> pBidiChar(IFX_BidiChar::Create());
     int32_t nR2L = 0;
     int32_t nL2R = 0;
     int32_t start = 0, count = 0;
@@ -1872,8 +1872,8 @@ FX_BOOL CPDF_TextPage::IsRightToLeft(const CPDF_TextObject* pTextObj,
         if (!wChar) {
             continue;
         }
-        if (BidiChar && BidiChar->AppendChar(wChar)) {
-            int32_t ret = BidiChar->GetBidiInfo(start, count);
+        if (pBidiChar->AppendChar(wChar)) {
+            int32_t ret = pBidiChar->GetBidiInfo(start, count);
             if (ret == 2) {
                 nR2L++;
             }
@@ -1882,8 +1882,8 @@ FX_BOOL CPDF_TextPage::IsRightToLeft(const CPDF_TextObject* pTextObj,
             }
         }
     }
-    if (BidiChar && BidiChar->EndChar()) {
-        int32_t ret = BidiChar->GetBidiInfo(start, count);
+    if (pBidiChar->EndChar()) {
+        int32_t ret = pBidiChar->GetBidiInfo(start, count);
         if (ret == 2) {
             nR2L++;
         }
@@ -1891,8 +1891,6 @@ FX_BOOL CPDF_TextPage::IsRightToLeft(const CPDF_TextObject* pTextObj,
             nL2R++;
         }
     }
-    if (BidiChar)
-      BidiChar->Release();
     return (nR2L > 0 && nR2L >= nL2R);
 }
 int32_t CPDF_TextPage::GetTextObjectWritingMode(const CPDF_TextObject* pTextObj)
diff --git a/core/src/fxcodec/codec/fx_codec.cpp b/core/src/fxcodec/codec/fx_codec.cpp
index db95053efd..9bbcce105f 100644
--- a/core/src/fxcodec/codec/fx_codec.cpp
+++ b/core/src/fxcodec/codec/fx_codec.cpp
@@ -7,33 +7,13 @@
 #include "../../../include/fxcodec/fx_codec.h"
 #include "codec_int.h"
 CCodec_ModuleMgr::CCodec_ModuleMgr()
-{
-    m_pBasicModule = new CCodec_BasicModule;
-    m_pFaxModule = new CCodec_FaxModule;
-    m_pJpegModule = new CCodec_JpegModule;
-    m_pJpxModule = new CCodec_JpxModule;
-    m_pJbig2Module = new CCodec_Jbig2Module;
-    m_pIccModule = new CCodec_IccModule;
-    m_pFlateModule = new CCodec_FlateModule;
-}
-CCodec_ModuleMgr::~CCodec_ModuleMgr()
-{
-    delete m_pBasicModule;
-    delete m_pFaxModule;
-    delete m_pJpegModule;
-    delete m_pFlateModule;
-    delete m_pJpxModule;
-    delete m_pJbig2Module;
-    delete m_pIccModule;
-}
-void CCodec_ModuleMgr::InitJbig2Decoder()
-{
-}
-void CCodec_ModuleMgr::InitJpxDecoder()
-{
-}
-void CCodec_ModuleMgr::InitIccDecoder()
-{
+  : m_pBasicModule(new CCodec_BasicModule),
+    m_pFaxModule(new CCodec_FaxModule),
+    m_pJpegModule(new CCodec_JpegModule),
+    m_pJpxModule(new CCodec_JpxModule),
+    m_pJbig2Module(new CCodec_Jbig2Module),
+    m_pIccModule(new CCodec_IccModule),
+    m_pFlateModule(new CCodec_FlateModule) {
 }
 CCodec_ScanlineDecoder::CCodec_ScanlineDecoder()
 {
@@ -241,14 +221,6 @@ FX_BOOL CCodec_BasicModule::A85Encode(const uint8_t* src_buf, FX_DWORD src_size,
 {
     return FALSE;
 }
-CCodec_ModuleMgr* CCodec_ModuleMgr::Create()
-{
-    return new CCodec_ModuleMgr;
-}
-void CCodec_ModuleMgr::Destroy()
-{
-    delete this;
-}
 class CCodec_RLScanlineDecoder : public CCodec_ScanlineDecoder
 {
 public:
diff --git a/core/src/fxcrt/fx_arabic.cpp b/core/src/fxcrt/fx_arabic.cpp
index 94b514bd0d..3cb2fd067a 100644
--- a/core/src/fxcrt/fx_arabic.cpp
+++ b/core/src/fxcrt/fx_arabic.cpp
@@ -22,6 +22,11 @@ CFX_BidiChar::CFX_BidiChar()
     , m_iLastCount(0)
 {
 }
+void CFX_BidiChar::SetPolicy(FX_BOOL bSeparateNeutral)
+{
+    m_bSeparateNeutral = bSeparateNeutral;
+}
+
 FX_BOOL CFX_BidiChar::AppendChar(FX_WCHAR wch)
 {
     FX_DWORD dwProps = gs_FX_TextLayout_CodeProperties[(FX_WORD)wch];
diff --git a/core/src/fxcrt/fx_arabic.h b/core/src/fxcrt/fx_arabic.h
index e7e6a28c43..e4c1ddacf2 100644
--- a/core/src/fxcrt/fx_arabic.h
+++ b/core/src/fxcrt/fx_arabic.h
@@ -13,21 +13,15 @@ class CFX_BidiChar final : public IFX_BidiChar
 {
 public:
     CFX_BidiChar();
-    virtual void		Release() override
-    {
-        delete this;
-    }
-    virtual void		SetPolicy(FX_BOOL bSeparateNeutral = TRUE) override
-    {
-        m_bSeparateNeutral = bSeparateNeutral;
-    }
-    virtual FX_BOOL		AppendChar(FX_WCHAR wch) override;
-    virtual FX_BOOL		EndChar() override;
-    virtual int32_t 	GetBidiInfo(int32_t &iStart, int32_t &iCount) override;
-    virtual void		Reset() override;
+    ~CFX_BidiChar() override {}
+
+    void SetPolicy(FX_BOOL bSeparateNeutral = TRUE) override;
+    FX_BOOL AppendChar(FX_WCHAR wch) override;
+    FX_BOOL EndChar() override;
+    int32_t GetBidiInfo(int32_t &iStart, int32_t &iCount) override;
+    void Reset() override;
 
 private:
-    ~CFX_BidiChar() { }
     FX_BOOL	m_bSeparateNeutral;
     int32_t	m_iCurStart;
     int32_t	m_iCurCount;
diff --git a/fpdfsdk/include/fsdk_actionhandler.h b/fpdfsdk/include/fsdk_actionhandler.h
index 311380ec98..39ec4f41af 100644
--- a/fpdfsdk/include/fsdk_actionhandler.h
+++ b/fpdfsdk/include/fsdk_actionhandler.h
@@ -9,6 +9,7 @@
 
 #include "../../core/include/fpdfdoc/fpdf_doc.h"
 #include "../../core/include/fxcrt/fx_string.h"
+#include "../../third_party/base/nonstd_unique_ptr.h"
 #include "fsdk_baseform.h"
 
 class CFX_PtrList;
@@ -36,53 +37,48 @@ public:
 	FX_BOOL	DoAction_Movie(const CPDF_Action& action, CPDFSDK_Document* pDocument);
 };
 
-class  CPDFSDK_ActionHandler /*: public CReader_ActionHandler*/
+class CPDFSDK_ActionHandler
 {
 public:
 	CPDFSDK_ActionHandler(CPDFDoc_Environment* pEvi);
-	virtual ~CPDFSDK_ActionHandler();
 
-	virtual void		Destroy();
-	virtual FX_BOOL		DoAction_DocOpen(const CPDF_Action& action, CPDFSDK_Document* pDocument/*, CPDFSDK_DocView *pDocView*/);
-	virtual FX_BOOL		DoAction_JavaScript(const CPDF_Action& JsAction,CFX_WideString csJSName, CPDFSDK_Document* pDocument/*, CReader_DocView *pDocView*/);
-	virtual FX_BOOL		DoAction_Page(const CPDF_Action& action, enum CPDF_AAction::AActionType eType, CPDFSDK_Document* pDocument/*, CReader_DocView *pDocView*/);
-	virtual FX_BOOL		DoAction_Document(const CPDF_Action& action, enum CPDF_AAction::AActionType eType, CPDFSDK_Document* pDocument/*, CReader_DocView *pDocView*/);
-	virtual FX_BOOL		DoAction_BookMark(CPDF_Bookmark *pBookMark, const CPDF_Action& action, CPDF_AAction::AActionType type, CPDFSDK_Document* pDocument/*, CReader_DocView *pDocView*/);
-	virtual FX_BOOL		DoAction_Screen(const CPDF_Action& action, CPDF_AAction::AActionType type, CPDFSDK_Document* pDocument,/* CReader_DocView *pDocView,*/ CPDFSDK_Annot* pScreen);
-	virtual FX_BOOL		DoAction_Link(const CPDF_Action& action, CPDFSDK_Document* pDocument/*, CReader_DocView *pDocView*/);
-	virtual FX_BOOL		DoAction_Field(const CPDF_Action& action, CPDF_AAction::AActionType type, CPDFSDK_Document* pDocument, /*CReader_DocView *pDocView,*/ CPDF_FormField* pFormField, PDFSDK_FieldAction& data);
-	virtual FX_BOOL		DoAction_FieldJavaScript(const CPDF_Action& JsAction, CPDF_AAction::AActionType type, CPDFSDK_Document* pDocument, CPDF_FormField* pFormField, PDFSDK_FieldAction& data);
-public:
-	void				SetFormActionHandler(CPDFSDK_FormActionHandler* pHandler);
-	void				SetMediaActionHandler(CPDFSDK_MediaActionHandler* pHandler);
+	void SetMediaActionHandler(CPDFSDK_MediaActionHandler* pHandler);
+
+	FX_BOOL		DoAction_DocOpen(const CPDF_Action& action, CPDFSDK_Document* pDocument);
+	FX_BOOL		DoAction_JavaScript(const CPDF_Action& JsAction,CFX_WideString csJSName, CPDFSDK_Document* pDocument);
+	FX_BOOL		DoAction_Page(const CPDF_Action& action, enum CPDF_AAction::AActionType eType, CPDFSDK_Document* pDocument);
+	FX_BOOL		DoAction_Document(const CPDF_Action& action, enum CPDF_AAction::AActionType eType, CPDFSDK_Document* pDocument);
+	FX_BOOL		DoAction_BookMark(CPDF_Bookmark *pBookMark, const CPDF_Action& action, CPDF_AAction::AActionType type, CPDFSDK_Document* pDocument);
+	FX_BOOL		DoAction_Screen(const CPDF_Action& action, CPDF_AAction::AActionType type, CPDFSDK_Document* pDocument, CPDFSDK_Annot* pScreen);
+	FX_BOOL		DoAction_Link(const CPDF_Action& action, CPDFSDK_Document* pDocument);
+	FX_BOOL		DoAction_Field(const CPDF_Action& action, CPDF_AAction::AActionType type, CPDFSDK_Document* pDocument,  CPDF_FormField* pFormField, PDFSDK_FieldAction& data);
+	FX_BOOL		DoAction_FieldJavaScript(const CPDF_Action& JsAction, CPDF_AAction::AActionType type, CPDFSDK_Document* pDocument, CPDF_FormField* pFormField, PDFSDK_FieldAction& data);
 
 private:
-	FX_BOOL				ExecuteDocumentOpenAction(const CPDF_Action& action, CPDFSDK_Document* pDocument, /*CReader_DocView *pDocView,*/ CFX_PtrList& list);
-	FX_BOOL				ExecuteDocumentPageAction(const CPDF_Action& action, CPDF_AAction::AActionType type, CPDFSDK_Document* pDocument, /*CReader_DocView *pDocView,*/ CFX_PtrList& list);
-	FX_BOOL				ExecuteFieldAction(const CPDF_Action& action, CPDF_AAction::AActionType type, CPDFSDK_Document* pDocument, /*CReader_DocView* pDocView,*/ CPDF_FormField* pFormField, PDFSDK_FieldAction& data, CFX_PtrList& list);
-	FX_BOOL				ExecuteScreenAction(const CPDF_Action& action, CPDF_AAction::AActionType type, CPDFSDK_Document* pDocument, /*CReader_DocView* pDocView,*/ CPDFSDK_Annot* pScreen, CFX_PtrList& list);
-	FX_BOOL				ExecuteBookMark(const CPDF_Action& action, CPDFSDK_Document* pDocument, /*CReader_DocView* pDocView,*/ CPDF_Bookmark* pBookmark, CFX_PtrList& list);
-	FX_BOOL				ExecuteLinkAction(const CPDF_Action& action, CPDFSDK_Document* pDocument, /*CReader_DocView* pDocView,*/ CFX_PtrList& list);
+	FX_BOOL				ExecuteDocumentOpenAction(const CPDF_Action& action, CPDFSDK_Document* pDocument,  CFX_PtrList& list);
+	FX_BOOL				ExecuteDocumentPageAction(const CPDF_Action& action, CPDF_AAction::AActionType type, CPDFSDK_Document* pDocument,  CFX_PtrList& list);
+	FX_BOOL				ExecuteFieldAction(const CPDF_Action& action, CPDF_AAction::AActionType type, CPDFSDK_Document* pDocument,  CPDF_FormField* pFormField, PDFSDK_FieldAction& data, CFX_PtrList& list);
+	FX_BOOL				ExecuteScreenAction(const CPDF_Action& action, CPDF_AAction::AActionType type, CPDFSDK_Document* pDocument,  CPDFSDK_Annot* pScreen, CFX_PtrList& list);
+	FX_BOOL				ExecuteBookMark(const CPDF_Action& action, CPDFSDK_Document* pDocument,  CPDF_Bookmark* pBookmark, CFX_PtrList& list);
+	FX_BOOL				ExecuteLinkAction(const CPDF_Action& action, CPDFSDK_Document* pDocument,  CFX_PtrList& list);
 
-	void				DoAction_NoJs(const CPDF_Action& action, CPDFSDK_Document* pDocument/*, CReader_DocView* pDocView*/);
+	void				DoAction_NoJs(const CPDF_Action& action, CPDFSDK_Document* pDocument);
 	void				RunDocumentPageJavaScript(CPDFSDK_Document* pDocument, CPDF_AAction::AActionType type, const CFX_WideString& script);
 	void				RunDocumentOpenJavaScript(CPDFSDK_Document* pDocument, const CFX_WideString& sScriptName, const CFX_WideString& script);
 	void				RunFieldJavaScript(CPDFSDK_Document* pDocument, CPDF_FormField* pFormField, CPDF_AAction::AActionType type, PDFSDK_FieldAction& data, const CFX_WideString& script);
 
-private:
 	FX_BOOL				IsValidField(CPDFSDK_Document* pDocument, CPDF_Dictionary* pFieldDict);
-	FX_BOOL				IsValidDocView(CPDFSDK_Document* pDocument/*, CReader_DocView* pDocView*/);
+	FX_BOOL				IsValidDocView(CPDFSDK_Document* pDocument);
 
-	void				DoAction_GoTo(CPDFSDK_Document* pDocument, /*CReader_DocView *pDocView,*/ const CPDF_Action& action);
+	void				DoAction_GoTo(CPDFSDK_Document* pDocument,  const CPDF_Action& action);
 	void				DoAction_GoToR(CPDFSDK_Document* pDocument, const CPDF_Action& action);
 	void				DoAction_Launch(CPDFSDK_Document* pDocument, const CPDF_Action& action);
 	void				DoAction_URI(CPDFSDK_Document* pDocument, const CPDF_Action& action);
 	void				DoAction_Named(CPDFSDK_Document* pDocument, const CPDF_Action& action);
-	void				DoAction_SetOCGState(CPDFSDK_Document* pDocument, /*CReader_DocView* pDocView,*/ const CPDF_Action& action);
+	void				DoAction_SetOCGState(CPDFSDK_Document* pDocument, const CPDF_Action& action);
 
-private:
-	CPDFSDK_FormActionHandler*		m_pFormActionHandler;
-	CPDFSDK_MediaActionHandler*		m_pMediaActionHandler;
+    nonstd::unique_ptr<CPDFSDK_FormActionHandler> m_pFormActionHandler;
+    CPDFSDK_MediaActionHandler* m_pMediaActionHandler;
 };
 
 #endif  // FPDFSDK_INCLUDE_FSDK_ACTIONHANDLER_H_
diff --git a/fpdfsdk/include/fsdk_baseform.h b/fpdfsdk/include/fsdk_baseform.h
index ac0f72aef8..718ff60ab5 100644
--- a/fpdfsdk/include/fsdk_baseform.h
+++ b/fpdfsdk/include/fsdk_baseform.h
@@ -56,7 +56,7 @@ typedef struct _PDFSDK_FieldAction
 	FX_BOOL					bFieldFull;		//in
 	FX_BOOL					bRC;			//in[out]
 }PDFSDK_FieldAction;
-class CPDFSDK_Widget:public CPDFSDK_Annot
+class CPDFSDK_Widget : public CPDFSDK_Annot
 {
 public:
 	CPDFSDK_Widget(CPDF_Annot* pAnnot, CPDFSDK_PageView* pPageView, CPDFSDK_InterForm* pInterForm);
@@ -170,14 +170,12 @@ private:
 class CPDFSDK_InterForm : public CPDF_FormNotify
 {
 public:
-	CPDFSDK_InterForm(CPDFSDK_Document* pDocument);
-	virtual ~CPDFSDK_InterForm();
+	explicit CPDFSDK_InterForm(CPDFSDK_Document* pDocument);
+	~CPDFSDK_InterForm() override;
 
-public:
-	virtual void					Destroy();
-	virtual CPDF_InterForm*			GetInterForm();
+	CPDF_InterForm* GetInterForm() const { return m_pInterForm; }
+	CPDFSDK_Document* GetDocument() const { return m_pDocument; }
 
-	CPDFSDK_Document*				GetDocument();
 	FX_BOOL							HighlightWidgets();
 
 	CPDFSDK_Widget*					GetSibling(CPDFSDK_Widget* pWidget, FX_BOOL bNext) const;
diff --git a/fpdfsdk/src/fpdfview.cpp b/fpdfsdk/src/fpdfview.cpp
index 48c6516d22..54731193dd 100644
--- a/fpdfsdk/src/fpdfview.cpp
+++ b/fpdfsdk/src/fpdfview.cpp
@@ -77,13 +77,7 @@ FPDF_BOOL FSDK_IsSandBoxPolicyEnabled(FPDF_DWORD policy)
 #define _T(x) x
 #endif
 
-#ifdef API5
-	CPDF_ModuleMgr*	g_pModuleMgr = NULL;
-#else
-	CCodec_ModuleMgr*	g_pCodecModule = NULL;
-#endif
-
-//extern CPDFSDK_FormFillApp* g_pFormFillApp;
+CCodec_ModuleMgr* g_pCodecModule = nullptr;
 
 #if _FX_OS_ == _FX_LINUX_EMBEDDED_
 class CFontMapper : public IPDF_FontMapper
@@ -111,7 +105,7 @@ CFontMapper* g_pFontMapper = NULL;
 
 DLLEXPORT void STDCALL FPDF_InitLibrary()
 {
-	g_pCodecModule = CCodec_ModuleMgr::Create();
+	g_pCodecModule = new CCodec_ModuleMgr();
 
 	CFX_GEModule::Create();
 	CFX_GEModule::Get()->SetCodecModule(g_pCodecModule);
@@ -135,15 +129,13 @@ DLLEXPORT void STDCALL FPDF_DestroyLibrary()
 {
 
 #if _FX_OS_ == _FX_LINUX_EMBEDDED_
-	if (g_pFontMapper) delete g_pFontMapper;
+	delete g_pFontMapper;
+	g_pFontMapper = nullptr;
 #endif
-#ifdef API5
-	g_pModuleMgr->Destroy();
-#else
 	CPDF_ModuleMgr::Destroy();
 	CFX_GEModule::Destroy();
-	g_pCodecModule->Destroy();
-#endif
+	delete g_pCodecModule;
+	g_pCodecModule = nullptr;
 }
 
 #ifndef _WIN32
diff --git a/fpdfsdk/src/fsdk_actionhandler.cpp b/fpdfsdk/src/fsdk_actionhandler.cpp
index b790585a6a..145559e057 100644
--- a/fpdfsdk/src/fsdk_actionhandler.cpp
+++ b/fpdfsdk/src/fsdk_actionhandler.cpp
@@ -11,27 +11,9 @@
 
 /* -------------------------- CBA_ActionHandler -------------------------- */
 
-CPDFSDK_ActionHandler::CPDFSDK_ActionHandler(CPDFDoc_Environment* pEvi) :
-	m_pFormActionHandler(NULL),
-	m_pMediaActionHandler(NULL)
-{
-		m_pFormActionHandler = new CPDFSDK_FormActionHandler;
-}
-
-CPDFSDK_ActionHandler::~CPDFSDK_ActionHandler()
-{
-	if(m_pFormActionHandler)
-	{
-		delete m_pFormActionHandler;
-		m_pFormActionHandler = NULL;
-	}
-}
-
-void CPDFSDK_ActionHandler::SetFormActionHandler(CPDFSDK_FormActionHandler* pHandler)
-{
-	ASSERT(pHandler != NULL);
-	ASSERT(m_pFormActionHandler == NULL);
-	m_pFormActionHandler = pHandler;
+CPDFSDK_ActionHandler::CPDFSDK_ActionHandler(CPDFDoc_Environment* pEvi)
+    : m_pFormActionHandler(new CPDFSDK_FormActionHandler),
+      m_pMediaActionHandler(NULL) {
 }
 
 void CPDFSDK_ActionHandler::SetMediaActionHandler(CPDFSDK_MediaActionHandler* pHandler)
@@ -41,11 +23,6 @@ void CPDFSDK_ActionHandler::SetMediaActionHandler(CPDFSDK_MediaActionHandler* pH
 	m_pMediaActionHandler = pHandler;
 }
 
-void CPDFSDK_ActionHandler::Destroy()
-{
-	delete this;
-}
-
 //document open
 FX_BOOL	CPDFSDK_ActionHandler::DoAction_DocOpen(const CPDF_Action& action, CPDFSDK_Document* pDocument)
 {
diff --git a/fpdfsdk/src/fsdk_baseform.cpp b/fpdfsdk/src/fsdk_baseform.cpp
index f58bfd84f2..312d323581 100644
--- a/fpdfsdk/src/fsdk_baseform.cpp
+++ b/fpdfsdk/src/fsdk_baseform.cpp
@@ -1666,28 +1666,12 @@ CPDFSDK_InterForm::CPDFSDK_InterForm(CPDFSDK_Document* pDocument)
 
 CPDFSDK_InterForm::~CPDFSDK_InterForm()
 {
-	ASSERT(m_pInterForm != NULL);
 	delete m_pInterForm;
 	m_pInterForm = NULL;
 
 	m_Map.RemoveAll();
 }
 
-void CPDFSDK_InterForm::Destroy()
-{
-	delete this;
-}
-
-CPDF_InterForm* CPDFSDK_InterForm::GetInterForm()
-{
-	return m_pInterForm;
-}
-
-CPDFSDK_Document* CPDFSDK_InterForm::GetDocument()
-{
-	return m_pDocument;
-}
-
 FX_BOOL CPDFSDK_InterForm::HighlightWidgets()
 {
 	return FALSE;
diff --git a/fpdfsdk/src/fsdk_mgr.cpp b/fpdfsdk/src/fsdk_mgr.cpp
index 1e57dc7b4e..b8028aad73 100644
--- a/fpdfsdk/src/fsdk_mgr.cpp
+++ b/fpdfsdk/src/fsdk_mgr.cpp
@@ -332,24 +332,20 @@ CPDFSDK_Document::CPDFSDK_Document(CPDF_Document* pDoc,CPDFDoc_Environment* pEnv
 
 CPDFSDK_Document::~CPDFSDK_Document()
 {
-	FX_POSITION pos = m_pageMap.GetStartPosition();
-	while (pos) {
-            CPDF_Page* pPage = NULL;
-            CPDFSDK_PageView* pPageView = NULL;
-            m_pageMap.GetNextAssoc(pos, pPage, pPageView);
-            delete pPageView;
-        }
-        m_pageMap.RemoveAll();
-	if(m_pInterForm)
-	{
-		m_pInterForm->Destroy();
-		m_pInterForm = NULL;
-	}
-	if(m_pOccontent)
-	{
-		delete m_pOccontent;
-		m_pOccontent = NULL;
-	}
+    FX_POSITION pos = m_pageMap.GetStartPosition();
+    while (pos) {
+        CPDF_Page* pPage = NULL;
+        CPDFSDK_PageView* pPageView = NULL;
+        m_pageMap.GetNextAssoc(pos, pPage, pPageView);
+        delete pPageView;
+    }
+    m_pageMap.RemoveAll();
+
+    delete m_pInterForm;
+    m_pInterForm = nullptr;
+
+    delete m_pOccontent;
+    m_pOccontent = nullptr;
 }
 
 void CPDFSDK_Document::InitPageView()