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diff --git a/fpdfsdk/fpdfxfa/cpdfxfa_context.h b/fpdfsdk/fpdfxfa/cpdfxfa_context.h
new file mode 100644
index 0000000000..02588e3fad
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+++ b/fpdfsdk/fpdfxfa/cpdfxfa_context.h
@@ -0,0 +1,116 @@
+// 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
+
+#ifndef FPDFSDK_FPDFXFA_CPDFXFA_CONTEXT_H_
+#define FPDFSDK_FPDFXFA_CPDFXFA_CONTEXT_H_
+
+#include <memory>
+
+#include "fpdfsdk/fpdfxfa/cpdfxfa_docenvironment.h"
+#include "xfa/fxfa/xfa_ffdoc.h"
+
+class CJS_Runtime;
+class CPDFSDK_FormFillEnvironment;
+class CPDFXFA_Page;
+class CXFA_FFDocHandler;
+class IJS_Runtime;
+class IJS_Context;
+
+enum LoadStatus {
+  FXFA_LOADSTATUS_PRELOAD = 0,
+  FXFA_LOADSTATUS_LOADING,
+  FXFA_LOADSTATUS_LOADED,
+  FXFA_LOADSTATUS_CLOSING,
+  FXFA_LOADSTATUS_CLOSED
+};
+
+class CPDFXFA_Context : public IXFA_AppProvider {
+ public:
+  CPDFXFA_Context(std::unique_ptr<CPDF_Document> pPDFDoc);
+  ~CPDFXFA_Context() override;
+
+  FX_BOOL LoadXFADoc();
+  CPDF_Document* GetPDFDoc() { return m_pPDFDoc.get(); }
+  CXFA_FFDoc* GetXFADoc() { return m_pXFADoc.get(); }
+  CXFA_FFDocView* GetXFADocView() { return m_pXFADocView; }
+  int GetDocType() const { return m_iDocType; }
+  v8::Isolate* GetJSERuntime() const;
+  CXFA_FFApp* GetXFAApp() { return m_pXFAApp.get(); }
+
+  CPDFSDK_FormFillEnvironment* GetFormFillEnv() const { return m_pFormFillEnv; }
+  void SetFormFillEnv(CPDFSDK_FormFillEnvironment* pFormFillEnv);
+
+  void DeletePage(int page_index);
+  int GetPageCount() const;
+
+  CPDFXFA_Page* GetXFAPage(int page_index);
+  CPDFXFA_Page* GetXFAPage(CXFA_FFPageView* pPage) const;
+
+  void RemovePage(CPDFXFA_Page* page);
+
+  void ClearChangeMark();
+
+  // IFXA_AppProvider:
+  void GetLanguage(CFX_WideString& wsLanguage) override;
+  void GetPlatform(CFX_WideString& wsPlatform) override;
+  void GetAppName(CFX_WideString& wsName) override;
+
+  void Beep(uint32_t dwType) override;
+  int32_t MsgBox(const CFX_WideString& wsMessage,
+                 const CFX_WideString& wsTitle,
+                 uint32_t dwIconType,
+                 uint32_t dwButtonType) override;
+  CFX_WideString Response(const CFX_WideString& wsQuestion,
+                          const CFX_WideString& wsTitle,
+                          const CFX_WideString& wsDefaultAnswer,
+                          FX_BOOL bMark) override;
+  IFX_SeekableReadStream* DownloadURL(const CFX_WideString& wsURL) override;
+  FX_BOOL PostRequestURL(const CFX_WideString& wsURL,
+                         const CFX_WideString& wsData,
+                         const CFX_WideString& wsContentType,
+                         const CFX_WideString& wsEncode,
+                         const CFX_WideString& wsHeader,
+                         CFX_WideString& wsResponse) override;
+  FX_BOOL PutRequestURL(const CFX_WideString& wsURL,
+                        const CFX_WideString& wsData,
+                        const CFX_WideString& wsEncode) override;
+
+  void LoadString(int32_t iStringID, CFX_WideString& wsString) override;
+  IFWL_AdapterTimerMgr* GetTimerMgr() override;
+
+ protected:
+  friend class CPDFXFA_DocEnvironment;
+
+  int GetOriginalPageCount() const { return m_nPageCount; }
+  void SetOriginalPageCount(int count) {
+    m_nPageCount = count;
+    m_XFAPageList.SetSize(count);
+  }
+
+  LoadStatus GetLoadStatus() const { return m_nLoadStatus; }
+
+  CFX_ArrayTemplate<CPDFXFA_Page*>* GetXFAPageList() { return &m_XFAPageList; }
+
+ private:
+  void CloseXFADoc();
+
+  int m_iDocType;
+
+  std::unique_ptr<CPDF_Document> m_pPDFDoc;
+  std::unique_ptr<CXFA_FFDoc> m_pXFADoc;
+  CPDFSDK_FormFillEnvironment* m_pFormFillEnv;  // not owned.
+  CXFA_FFDocView* m_pXFADocView;                // not owned.
+  std::unique_ptr<CXFA_FFApp> m_pXFAApp;
+  std::unique_ptr<CJS_Runtime> m_pRuntime;
+  CFX_ArrayTemplate<CPDFXFA_Page*> m_XFAPageList;
+  LoadStatus m_nLoadStatus;
+  int m_nPageCount;
+
+  // Must be destroyed before |m_pFormFillEnv|.
+  CPDFXFA_DocEnvironment m_DocEnv;
+};
+
+#endif  // FPDFSDK_FPDFXFA_CPDFXFA_CONTEXT_H_