Get CJS_RuntimeFactory out of the CJS_GlobalData management business.

fpdfsdk/src/javascript/JS_GlobalData.cpp

 // Copyright 2014 PDFium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
 
 #include "../../../core/include/fdrm/fx_crypt.h"
 #include "../../include/javascript/JavaScript.h"
 #include "../../include/javascript/IJavaScript.h"
 #include "../../include/javascript/JS_GlobalData.h"
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-CJS_GlobalData::CJS_GlobalData(CPDFDoc_Environment* pApp) {
-  //  IBaseAnnot* pBaseAnnot = IBaseAnnot::GetBaseAnnot(m_pApp);
-  //  ASSERT(pBaseAnnot != NULL);
-  //
-  //  m_sFilePath = pBaseAnnot->GetUserPath();
+CJS_GlobalData* CJS_GlobalData::g_Instance = nullptr;
+
+// static
+CJS_GlobalData* CJS_GlobalData::GetRetainedInstance(CPDFDoc_Environment* pApp) {
+  if (!g_Instance) {
+    g_Instance = new CJS_GlobalData(pApp);
+  }
+  ++g_Instance->m_RefCount;
+  return g_Instance;
+}
+
+void CJS_GlobalData::Release() {
+  if (!--m_RefCount) {
+    delete g_Instance;
+    g_Instance = nullptr;
+  }
+}
+
+CJS_GlobalData::CJS_GlobalData(CPDFDoc_Environment* pApp) : m_RefCount(0) {
   m_sFilePath += SDK_JS_GLOBALDATA_FILENAME;
-
   LoadGlobalPersistentVariables();
 }
 
 CJS_GlobalData::~CJS_GlobalData() {
   SaveGlobalPersisitentVariables();
-
   for (int i = 0, sz = m_arrayGlobalData.GetSize(); i < sz; i++)
     delete m_arrayGlobalData.GetAt(i);
 
   m_arrayGlobalData.RemoveAll();
 }
 
 int CJS_GlobalData::FindGlobalVariable(const FX_CHAR* propname) {
-  ASSERT(propname != NULL);
-
-  int nRet = -1;
-
   for (int i = 0, sz = m_arrayGlobalData.GetSize(); i < sz; i++) {
     CJS_GlobalData_Element* pTemp = m_arrayGlobalData.GetAt(i);
-    if (pTemp->data.sKey[0] == *propname && pTemp->data.sKey == propname) {
-      nRet = i;
-      break;
-    }
+    if (pTemp->data.sKey[0] == *propname && pTemp->data.sKey == propname)
+      return i;
   }
-
-  return nRet;
+  return -1;
 }
 
 CJS_GlobalData_Element* CJS_GlobalData::GetGlobalVariable(
     const FX_CHAR* propname) {
   ASSERT(propname != NULL);
 
   int nFind = FindGlobalVariable(propname);
   if (nFind >= 0)
     return m_arrayGlobalData.GetAt(nFind);
 
@@ skipping 339 matching lines @@
     case JS_GLOBALDATA_TYPE_NULL: {
       FX_DWORD dwNameLen = (FX_DWORD)name.GetLength();
       sData.AppendBlock(&dwNameLen, sizeof(FX_DWORD));
       sData.AppendString(name);
       sData.AppendBlock(&wType, sizeof(FX_DWORD));
     } break;
     default:
       break;
   }
 }