fpdfsdk/ differences with XFA (for didactic purposes only).

fpdfsdk/src/javascript/JS_Context.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 "JS_Context.h"
 
 #include "JS_EventHandler.h"
 #include "JS_Runtime.h"
@@ skipping 17 matching lines @@
 
 CPDFDoc_Environment* CJS_Context::GetReaderApp() {
   ASSERT(m_pRuntime != NULL);
 
   return m_pRuntime->GetReaderApp();
 }
 
 FX_BOOL CJS_Context::RunScript(const CFX_WideString& script,
                                CFX_WideString* info) {
   v8::Isolate::Scope isolate_scope(m_pRuntime->GetIsolate());
+#ifdef PDF_ENABLE_XFA
+  v8::Locker locker(m_pRuntime->GetIsolate());
+#endif
   v8::HandleScope handle_scope(m_pRuntime->GetIsolate());
   v8::Local<v8::Context> context = m_pRuntime->NewJSContext();
   v8::Context::Scope context_scope(context);
 
   if (m_bBusy) {
     *info = JSGetStringFromID(this, IDS_STRING_JSBUSY);
     return FALSE;
   }
   m_bBusy = TRUE;
 
@@ skipping 226 matching lines @@
 }
 
 void CJS_Context::OnBatchExec(CPDFSDK_Document* pTarget) {
   m_pEventHandler->OnBatchExec(pTarget);
 }
 
 void CJS_Context::OnMenu_Exec(CPDFSDK_Document* pTarget,
                               const CFX_WideString& strTargetName) {
   m_pEventHandler->OnMenu_Exec(pTarget, strTargetName);
 }