Split CPDFXFA_Document apart

[DO NOT COMMIT]

This CL renames IXFA_DocProvider to IXFA_DocEnvironment to better describe the
purpose. Then, CPDFXFA_Document has all of the IXFA_DocEnvironment methods
removed and placed in CPDFXFA_DocEnvironment. The CPDFXFA_Document then
has a CPDFXFA_DocEnvironment.

This splits the code related to the document apart from the XFA callback methods
to work with that document.

Review-Url: https://codereview.chromium.org/2328573002

4 files changed, 1172 insertions, 1086 deletions

diff --git a/fpdfsdk/fpdfxfa/cpdfxfa_docenvironment.cpp b/fpdfsdk/fpdfxfa/cpdfxfa_docenvironment.cpp
new file mode 100644
index 0000000000..56eb3fccc6
--- /dev/null
+++ b/fpdfsdk/fpdfxfa/cpdfxfa_docenvironment.cpp
@@ -0,0 +1,1023 @@
+// Copyright 2016 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 "fpdfsdk/fpdfxfa/include/cpdfxfa_docenvironment.h"
+
+#include "core/fpdfapi/fpdf_parser/include/cpdf_array.h"
+#include "core/fpdfapi/fpdf_parser/include/cpdf_string.h"
+#include "core/fpdfapi/fpdf_parser/include/cpdf_stream_acc.h"
+#include "fpdfsdk/fpdfxfa/include/fpdfxfa_doc.h"
+#include "fpdfsdk/fpdfxfa/include/fpdfxfa_page.h"
+#include "fpdfsdk/include/cpdfdoc_environment.h"
+#include "fpdfsdk/include/cpdfsdk_document.h"
+#include "fpdfsdk/include/cpdfsdk_interform.h"
+#include "fpdfsdk/include/cpdfsdk_pageview.h"
+#include "fpdfsdk/javascript/ijs_runtime.h"
+#include "xfa/fxfa/include/xfa_ffdocview.h"
+#include "xfa/fxfa/include/xfa_ffwidget.h"
+#include "xfa/fxfa/include/xfa_ffwidgethandler.h"
+
+#define IDS_XFA_Validate_Input                                          \
+  "At least one required field was empty. Please fill in the required " \
+  "fields\r\n(highlighted) before continuing."
+
+// submit
+#define FXFA_CONFIG 0x00000001
+#define FXFA_TEMPLATE 0x00000010
+#define FXFA_LOCALESET 0x00000100
+#define FXFA_DATASETS 0x00001000
+#define FXFA_XMPMETA 0x00010000
+#define FXFA_XFDF 0x00100000
+#define FXFA_FORM 0x01000000
+#define FXFA_PDF 0x10000000
+#define FXFA_XFA_ALL 0x01111111
+
+CPDFXFA_DocEnvironment::CPDFXFA_DocEnvironment(CPDFXFA_Document* doc)
+    : m_pDocument(doc), m_pJSContext(nullptr) {
+  ASSERT(m_pDocument);
+}
+
+CPDFXFA_DocEnvironment::~CPDFXFA_DocEnvironment() {
+  if (m_pJSContext && m_pDocument->GetSDKDoc() &&
+      m_pDocument->GetSDKDoc()->GetEnv())
+    m_pDocument->GetSDKDoc()->GetEnv()->GetJSRuntime()->ReleaseContext(
+        m_pJSContext);
+}
+
+void CPDFXFA_DocEnvironment::SetChangeMark(CXFA_FFDoc* hDoc) {
+  if (hDoc == m_pDocument->GetXFADoc() && m_pDocument->GetSDKDoc())
+    m_pDocument->GetSDKDoc()->SetChangeMark();
+}
+
+void CPDFXFA_DocEnvironment::InvalidateRect(CXFA_FFPageView* pPageView,
+                                            const CFX_RectF& rt,
+                                            uint32_t dwFlags /* = 0 */) {
+  if (!m_pDocument->GetXFADoc() || !m_pDocument->GetSDKDoc())
+    return;
+
+  if (m_pDocument->GetDocType() != DOCTYPE_DYNAMIC_XFA)
+    return;
+
+  CPDFXFA_Page* pPage = m_pDocument->GetPage(pPageView);
+  if (!pPage)
+    return;
+
+  CPDFDoc_Environment* pEnv = m_pDocument->GetSDKDoc()->GetEnv();
+  if (!pEnv)
+    return;
+
+  CFX_FloatRect rcPage = CFX_FloatRect::FromCFXRectF(rt);
+  pEnv->FFI_Invalidate((FPDF_PAGE)pPage, rcPage.left, rcPage.bottom,
+                       rcPage.right, rcPage.top);
+}
+
+void CPDFXFA_DocEnvironment::DisplayCaret(CXFA_FFWidget* hWidget,
+                                          FX_BOOL bVisible,
+                                          const CFX_RectF* pRtAnchor) {
+  if (!hWidget || !pRtAnchor || !m_pDocument->GetXFADoc() ||
+      !m_pDocument->GetSDKDoc() || !m_pDocument->GetXFADocView())
+    return;
+
+  if (m_pDocument->GetDocType() != DOCTYPE_DYNAMIC_XFA)
+    return;
+
+  CXFA_FFWidgetHandler* pWidgetHandler =
+      m_pDocument->GetXFADocView()->GetWidgetHandler();
+  if (!pWidgetHandler)
+    return;
+
+  CXFA_FFPageView* pPageView = hWidget->GetPageView();
+  if (!pPageView)
+    return;
+
+  CPDFXFA_Page* pPage = m_pDocument->GetPage(pPageView);
+  if (!pPage)
+    return;
+
+  CPDFDoc_Environment* pEnv = m_pDocument->GetSDKDoc()->GetEnv();
+  if (!pEnv)
+    return;
+
+  CFX_FloatRect rcCaret = CFX_FloatRect::FromCFXRectF(*pRtAnchor);
+  pEnv->FFI_DisplayCaret((FPDF_PAGE)pPage, bVisible, rcCaret.left, rcCaret.top,
+                         rcCaret.right, rcCaret.bottom);
+}
+
+FX_BOOL CPDFXFA_DocEnvironment::GetPopupPos(CXFA_FFWidget* hWidget,
+                                            FX_FLOAT fMinPopup,
+                                            FX_FLOAT fMaxPopup,
+                                            const CFX_RectF& rtAnchor,
+                                            CFX_RectF& rtPopup) {
+  if (!hWidget)
+    return FALSE;
+
+  CXFA_FFPageView* pXFAPageView = hWidget->GetPageView();
+  if (!pXFAPageView)
+    return FALSE;
+
+  CPDFXFA_Page* pPage = m_pDocument->GetPage(pXFAPageView);
+  if (!pPage)
+    return FALSE;
+
+  CXFA_WidgetAcc* pWidgetAcc = hWidget->GetDataAcc();
+  int nRotate = pWidgetAcc->GetRotate();
+  CPDFDoc_Environment* pEnv = m_pDocument->GetSDKDoc()->GetEnv();
+  if (!pEnv)
+    return FALSE;
+
+  FS_RECTF pageViewRect = {0.0f, 0.0f, 0.0f, 0.0f};
+  pEnv->FFI_GetPageViewRect(pPage, pageViewRect);
+
+  int t1;
+  int t2;
+  CFX_FloatRect rcAnchor = CFX_FloatRect::FromCFXRectF(rtAnchor);
+  switch (nRotate) {
+    case 90: {
+      t1 = (int)(pageViewRect.right - rcAnchor.right);
+      t2 = (int)(rcAnchor.left - pageViewRect.left);
+      if (rcAnchor.bottom < pageViewRect.bottom)
+        rtPopup.left += rcAnchor.bottom - pageViewRect.bottom;
+      break;
+    }
+    case 180: {
+      t2 = (int)(pageViewRect.top - rcAnchor.top);
+      t1 = (int)(rcAnchor.bottom - pageViewRect.bottom);
+      if (rcAnchor.left < pageViewRect.left)
+        rtPopup.left += rcAnchor.left - pageViewRect.left;
+      break;
+    }
+    case 270: {
+      t1 = (int)(rcAnchor.left - pageViewRect.left);
+      t2 = (int)(pageViewRect.right - rcAnchor.right);
+      if (rcAnchor.top > pageViewRect.top)
+        rtPopup.left -= rcAnchor.top - pageViewRect.top;
+      break;
+    }
+    case 0:
+    default: {
+      t1 = (int)(pageViewRect.top - rcAnchor.top);
+      t2 = (int)(rcAnchor.bottom - pageViewRect.bottom);
+      if (rcAnchor.right > pageViewRect.right)
+        rtPopup.left -= rcAnchor.right - pageViewRect.right;
+      break;
+    }
+  }
+
+  int t;
+  uint32_t dwPos;
+  if (t1 <= 0 && t2 <= 0)
+    return FALSE;
+  if (t1 <= 0) {
+    t = t2;
+    dwPos = 1;
+  } else if (t2 <= 0) {
+    t = t1;
+    dwPos = 0;
+  } else if (t1 > t2) {
+    t = t1;
+    dwPos = 0;
+  } else {
+    t = t2;
+    dwPos = 1;
+  }
+
+  FX_FLOAT fPopupHeight;
+  if (t < fMinPopup)
+    fPopupHeight = fMinPopup;
+  else if (t > fMaxPopup)
+    fPopupHeight = fMaxPopup;
+  else
+    fPopupHeight = static_cast<FX_FLOAT>(t);
+
+  switch (nRotate) {
+    case 0:
+    case 180: {
+      if (dwPos == 0) {
+        rtPopup.top = rtAnchor.height;
+        rtPopup.height = fPopupHeight;
+      } else {
+        rtPopup.top = -fPopupHeight;
+        rtPopup.height = fPopupHeight;
+      }
+      break;
+    }
+    case 90:
+    case 270: {
+      if (dwPos == 0) {
+        rtPopup.top = rtAnchor.width;
+        rtPopup.height = fPopupHeight;
+      } else {
+        rtPopup.top = -fPopupHeight;
+        rtPopup.height = fPopupHeight;
+      }
+      break;
+    }
+    default:
+      break;
+  }
+
+  return TRUE;
+}
+
+FX_BOOL CPDFXFA_DocEnvironment::PopupMenu(CXFA_FFWidget* hWidget,
+                                          CFX_PointF ptPopup) {
+  if (!hWidget)
+    return FALSE;
+
+  CXFA_FFPageView* pXFAPageView = hWidget->GetPageView();
+  if (!pXFAPageView)
+    return FALSE;
+
+  CPDFXFA_Page* pPage = m_pDocument->GetPage(pXFAPageView);
+  if (!pPage)
+    return FALSE;
+
+  CPDFDoc_Environment* pEnv = m_pDocument->GetSDKDoc()->GetEnv();
+  if (!pEnv)
+    return FALSE;
+
+  int menuFlag = 0;
+  if (hWidget->CanUndo())
+    menuFlag |= FXFA_MENU_UNDO;
+  if (hWidget->CanRedo())
+    menuFlag |= FXFA_MENU_REDO;
+  if (hWidget->CanPaste())
+    menuFlag |= FXFA_MENU_PASTE;
+  if (hWidget->CanCopy())
+    menuFlag |= FXFA_MENU_COPY;
+  if (hWidget->CanCut())
+    menuFlag |= FXFA_MENU_CUT;
+  if (hWidget->CanSelectAll())
+    menuFlag |= FXFA_MENU_SELECTALL;
+
+  return pEnv->FFI_PopupMenu(pPage, hWidget, menuFlag, ptPopup, nullptr);
+}
+
+void CPDFXFA_DocEnvironment::PageViewEvent(CXFA_FFPageView* pPageView,
+                                           uint32_t dwFlags) {
+  CPDFDoc_Environment* pEnv = m_pDocument->GetSDKDoc()->GetEnv();
+  if (!pEnv)
+    return;
+
+  if (m_pDocument->GetLoadStatus() == FXFA_LOADSTATUS_LOADING ||
+      m_pDocument->GetLoadStatus() == FXFA_LOADSTATUS_CLOSING ||
+      XFA_PAGEVIEWEVENT_StopLayout != dwFlags)
+    return;
+
+  int nNewCount = m_pDocument->GetPageCount();
+  if (nNewCount == m_pDocument->GetOriginalPageCount())
+    return;
+
+  CXFA_FFDocView* pXFADocView = m_pDocument->GetXFADocView();
+  if (!pXFADocView)
+    return;
+
+  for (int iPageIter = 0; iPageIter < m_pDocument->GetOriginalPageCount();
+       iPageIter++) {
+    CPDFXFA_Page* pPage = m_pDocument->GetXFAPageList()->GetAt(iPageIter);
+    if (!pPage)
+      continue;
+
+    m_pDocument->GetSDKDoc()->RemovePageView(pPage);
+    pPage->SetXFAPageView(pXFADocView->GetPageView(iPageIter));
+  }
+
+  int flag = (nNewCount < m_pDocument->GetOriginalPageCount())
+                 ? FXFA_PAGEVIEWEVENT_POSTREMOVED
+                 : FXFA_PAGEVIEWEVENT_POSTADDED;
+  int count = FXSYS_abs(nNewCount - m_pDocument->GetOriginalPageCount());
+  m_pDocument->SetOriginalPageCount(nNewCount);
+  pEnv->FFI_PageEvent(count, flag);
+}
+
+void CPDFXFA_DocEnvironment::WidgetPostAdd(CXFA_FFWidget* hWidget,
+                                           CXFA_WidgetAcc* pWidgetData) {
+  if (m_pDocument->GetDocType() != DOCTYPE_DYNAMIC_XFA || !hWidget)
+    return;
+
+  CXFA_FFPageView* pPageView = hWidget->GetPageView();
+  if (!pPageView)
+    return;
+
+  CPDFXFA_Page* pXFAPage = m_pDocument->GetPage(pPageView);
+  if (!pXFAPage)
+    return;
+
+  m_pDocument->GetSDKDoc()->GetPageView(pXFAPage, true)->AddAnnot(hWidget);
+}
+
+void CPDFXFA_DocEnvironment::WidgetPreRemove(CXFA_FFWidget* hWidget,
+                                             CXFA_WidgetAcc* pWidgetData) {
+  if (m_pDocument->GetDocType() != DOCTYPE_DYNAMIC_XFA || !hWidget)
+    return;
+
+  CXFA_FFPageView* pPageView = hWidget->GetPageView();
+  if (!pPageView)
+    return;
+
+  CPDFXFA_Page* pXFAPage = m_pDocument->GetPage(pPageView);
+  if (!pXFAPage)
+    return;
+
+  CPDFSDK_PageView* pSdkPageView =
+      m_pDocument->GetSDKDoc()->GetPageView(pXFAPage, true);
+  if (CPDFSDK_Annot* pAnnot = pSdkPageView->GetAnnotByXFAWidget(hWidget))
+    pSdkPageView->DeleteAnnot(pAnnot);
+}
+
+int32_t CPDFXFA_DocEnvironment::CountPages(CXFA_FFDoc* hDoc) {
+  if (hDoc == m_pDocument->GetXFADoc() && m_pDocument->GetSDKDoc())
+    return m_pDocument->GetPageCount();
+  return 0;
+}
+
+int32_t CPDFXFA_DocEnvironment::GetCurrentPage(CXFA_FFDoc* hDoc) {
+  if (hDoc != m_pDocument->GetXFADoc() || !m_pDocument->GetSDKDoc())
+    return -1;
+  if (m_pDocument->GetDocType() != DOCTYPE_DYNAMIC_XFA)
+    return -1;
+
+  CPDFDoc_Environment* pEnv = m_pDocument->GetSDKDoc()->GetEnv();
+  if (!pEnv)
+    return -1;
+
+  return pEnv->FFI_GetCurrentPageIndex(this);
+}
+
+void CPDFXFA_DocEnvironment::SetCurrentPage(CXFA_FFDoc* hDoc,
+                                            int32_t iCurPage) {
+  if (hDoc != m_pDocument->GetXFADoc() || !m_pDocument->GetSDKDoc() ||
+      m_pDocument->GetDocType() != DOCTYPE_DYNAMIC_XFA || iCurPage < 0 ||
+      iCurPage >= m_pDocument->GetSDKDoc()->GetPageCount()) {
+    return;
+  }
+
+  CPDFDoc_Environment* pEnv = m_pDocument->GetSDKDoc()->GetEnv();
+  if (!pEnv)
+    return;
+  pEnv->FFI_SetCurrentPage(this, iCurPage);
+}
+
+FX_BOOL CPDFXFA_DocEnvironment::IsCalculationsEnabled(CXFA_FFDoc* hDoc) {
+  if (hDoc != m_pDocument->GetXFADoc() || !m_pDocument->GetSDKDoc())
+    return FALSE;
+  if (m_pDocument->GetSDKDoc()->GetInterForm())
+    return m_pDocument->GetSDKDoc()->GetInterForm()->IsXfaCalculateEnabled();
+  return FALSE;
+}
+
+void CPDFXFA_DocEnvironment::SetCalculationsEnabled(CXFA_FFDoc* hDoc,
+                                                    FX_BOOL bEnabled) {
+  if (hDoc != m_pDocument->GetXFADoc() || !m_pDocument->GetSDKDoc())
+    return;
+  if (m_pDocument->GetSDKDoc()->GetInterForm())
+    m_pDocument->GetSDKDoc()->GetInterForm()->XfaEnableCalculate(bEnabled);
+}
+
+void CPDFXFA_DocEnvironment::GetTitle(CXFA_FFDoc* hDoc,
+                                      CFX_WideString& wsTitle) {
+  if (hDoc != m_pDocument->GetXFADoc() || !m_pDocument->GetPDFDoc())
+    return;
+
+  CPDF_Dictionary* pInfoDict = m_pDocument->GetPDFDoc()->GetInfo();
+  if (!pInfoDict)
+    return;
+
+  CFX_ByteString csTitle = pInfoDict->GetStringBy("Title");
+  wsTitle = wsTitle.FromLocal(csTitle.GetBuffer(csTitle.GetLength()));
+  csTitle.ReleaseBuffer(csTitle.GetLength());
+}
+
+void CPDFXFA_DocEnvironment::SetTitle(CXFA_FFDoc* hDoc,
+                                      const CFX_WideString& wsTitle) {
+  if (hDoc != m_pDocument->GetXFADoc() || !m_pDocument->GetPDFDoc())
+    return;
+
+  if (CPDF_Dictionary* pInfoDict = m_pDocument->GetPDFDoc()->GetInfo())
+    pInfoDict->SetAt("Title", new CPDF_String(wsTitle));
+}
+
+void CPDFXFA_DocEnvironment::ExportData(CXFA_FFDoc* hDoc,
+                                        const CFX_WideString& wsFilePath,
+                                        FX_BOOL bXDP) {
+  if (hDoc != m_pDocument->GetXFADoc())
+    return;
+
+  if (m_pDocument->GetDocType() != DOCTYPE_DYNAMIC_XFA &&
+      m_pDocument->GetDocType() != DOCTYPE_STATIC_XFA)
+    return;
+
+  CPDFDoc_Environment* pEnv = m_pDocument->GetSDKDoc()->GetEnv();
+  if (!pEnv)
+    return;
+
+  int fileType = bXDP ? FXFA_SAVEAS_XDP : FXFA_SAVEAS_XML;
+  CFX_ByteString bs = wsFilePath.UTF16LE_Encode();
+  if (wsFilePath.IsEmpty()) {
+    if (!pEnv->GetFormFillInfo() || !pEnv->GetFormFillInfo()->m_pJsPlatform)
+      return;
+
+    CFX_WideString filepath = pEnv->JS_fieldBrowse();
+    bs = filepath.UTF16LE_Encode();
+  }
+  int len = bs.GetLength();
+  FPDF_FILEHANDLER* pFileHandler =
+      pEnv->FFI_OpenFile(bXDP ? FXFA_SAVEAS_XDP : FXFA_SAVEAS_XML,
+                         (FPDF_WIDESTRING)bs.GetBuffer(len), "wb");
+  bs.ReleaseBuffer(len);
+  if (!pFileHandler)
+    return;
+
+  CFPDF_FileStream fileWrite(pFileHandler);
+  CFX_ByteString content;
+  if (fileType == FXFA_SAVEAS_XML) {
+    content = "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\r\n";
+    fileWrite.WriteBlock(content.c_str(), fileWrite.GetSize(),
+                         content.GetLength());
+    m_pDocument->GetXFADocView()->GetDoc()->SavePackage(XFA_HASHCODE_Data,
+                                                        &fileWrite, nullptr);
+  } else if (fileType == FXFA_SAVEAS_XDP) {
+    if (!m_pDocument->GetPDFDoc())
+      return;
+
+    CPDF_Dictionary* pRoot = m_pDocument->GetPDFDoc()->GetRoot();
+    if (!pRoot)
+      return;
+
+    CPDF_Dictionary* pAcroForm = pRoot->GetDictBy("AcroForm");
+    if (!pAcroForm)
+      return;
+
+    CPDF_Array* pArray = ToArray(pAcroForm->GetObjectBy("XFA"));
+    if (!pArray)
+      return;
+
+    int size = pArray->GetCount();
+    for (int i = 1; i < size; i += 2) {
+      CPDF_Object* pPDFObj = pArray->GetObjectAt(i);
+      CPDF_Object* pPrePDFObj = pArray->GetObjectAt(i - 1);
+      if (!pPrePDFObj->IsString())
+        continue;
+      if (!pPDFObj->IsReference())
+        continue;
+
+      CPDF_Stream* pStream = ToStream(pPDFObj->GetDirect());
+      if (!pStream)
+        continue;
+      if (pPrePDFObj->GetString() == "form") {
+        m_pDocument->GetXFADocView()->GetDoc()->SavePackage(
+            XFA_HASHCODE_Form, &fileWrite, nullptr);
+        continue;
+      }
+      if (pPrePDFObj->GetString() == "datasets") {
+        m_pDocument->GetXFADocView()->GetDoc()->SavePackage(
+            XFA_HASHCODE_Datasets, &fileWrite, nullptr);
+        continue;
+      }
+      if (i == size - 1) {
+        CFX_WideString wPath = CFX_WideString::FromUTF16LE(
+            reinterpret_cast<const unsigned short*>(bs.c_str()),
+            bs.GetLength() / sizeof(unsigned short));
+        CFX_ByteString bPath = wPath.UTF8Encode();
+        const char* szFormat =
+            "\n<pdf href=\"%s\" xmlns=\"http://ns.adobe.com/xdp/pdf/\"/>";
+        content.Format(szFormat, bPath.c_str());
+        fileWrite.WriteBlock(content.c_str(), fileWrite.GetSize(),
+                             content.GetLength());
+      }
+      std::unique_ptr<CPDF_StreamAcc> pAcc(new CPDF_StreamAcc);
+      pAcc->LoadAllData(pStream);
+      fileWrite.WriteBlock(pAcc->GetData(), fileWrite.GetSize(),
+                           pAcc->GetSize());
+    }
+  }
+  if (!fileWrite.Flush()) {
+    // Ignoring flush error.
+  }
+}
+
+void CPDFXFA_DocEnvironment::GotoURL(CXFA_FFDoc* hDoc,
+                                     const CFX_WideString& bsURL,
+                                     FX_BOOL bAppend) {
+  if (hDoc != m_pDocument->GetXFADoc())
+    return;
+
+  if (m_pDocument->GetDocType() != DOCTYPE_DYNAMIC_XFA)
+    return;
+
+  CPDFDoc_Environment* pEnv = m_pDocument->GetSDKDoc()->GetEnv();
+  if (!pEnv)
+    return;
+
+  CFX_WideStringC str(bsURL.c_str());
+
+  pEnv->FFI_GotoURL(this, str, bAppend);
+}
+
+FX_BOOL CPDFXFA_DocEnvironment::IsValidationsEnabled(CXFA_FFDoc* hDoc) {
+  if (hDoc != m_pDocument->GetXFADoc() || !m_pDocument->GetSDKDoc())
+    return FALSE;
+  if (m_pDocument->GetSDKDoc()->GetInterForm())
+    return m_pDocument->GetSDKDoc()->GetInterForm()->IsXfaValidationsEnabled();
+  return TRUE;
+}
+
+void CPDFXFA_DocEnvironment::SetValidationsEnabled(CXFA_FFDoc* hDoc,
+                                                   FX_BOOL bEnabled) {
+  if (hDoc != m_pDocument->GetXFADoc() || !m_pDocument->GetSDKDoc())
+    return;
+  if (m_pDocument->GetSDKDoc()->GetInterForm())
+    m_pDocument->GetSDKDoc()->GetInterForm()->XfaSetValidationsEnabled(
+        bEnabled);
+}
+
+void CPDFXFA_DocEnvironment::SetFocusWidget(CXFA_FFDoc* hDoc,
+                                            CXFA_FFWidget* hWidget) {
+  if (hDoc != m_pDocument->GetXFADoc())
+    return;
+
+  if (!hWidget) {
+    m_pDocument->GetSDKDoc()->SetFocusAnnot(nullptr);
+    return;
+  }
+
+  int pageViewCount = m_pDocument->GetSDKDoc()->GetPageViewCount();
+  for (int i = 0; i < pageViewCount; i++) {
+    CPDFSDK_PageView* pPageView = m_pDocument->GetSDKDoc()->GetPageView(i);
+    if (!pPageView)
+      continue;
+
+    CPDFSDK_Annot* pAnnot = pPageView->GetAnnotByXFAWidget(hWidget);
+    if (pAnnot) {
+      m_pDocument->GetSDKDoc()->SetFocusAnnot(pAnnot);
+      break;
+    }
+  }
+}
+
+void CPDFXFA_DocEnvironment::Print(CXFA_FFDoc* hDoc,
+                                   int32_t nStartPage,
+                                   int32_t nEndPage,
+                                   uint32_t dwOptions) {
+  if (hDoc != m_pDocument->GetXFADoc())
+    return;
+
+  CPDFDoc_Environment* pEnv = m_pDocument->GetSDKDoc()->GetEnv();
+  if (!pEnv || !pEnv->GetFormFillInfo() ||
+      !pEnv->GetFormFillInfo()->m_pJsPlatform ||
+      !pEnv->GetFormFillInfo()->m_pJsPlatform->Doc_print) {
+    return;
+  }
+
+  pEnv->GetFormFillInfo()->m_pJsPlatform->Doc_print(
+      pEnv->GetFormFillInfo()->m_pJsPlatform,
+      dwOptions & XFA_PRINTOPT_ShowDialog, nStartPage, nEndPage,
+      dwOptions & XFA_PRINTOPT_CanCancel, dwOptions & XFA_PRINTOPT_ShrinkPage,
+      dwOptions & XFA_PRINTOPT_AsImage, dwOptions & XFA_PRINTOPT_ReverseOrder,
+      dwOptions & XFA_PRINTOPT_PrintAnnot);
+}
+
+FX_ARGB CPDFXFA_DocEnvironment::GetHighlightColor(CXFA_FFDoc* hDoc) {
+  if (hDoc != m_pDocument->GetXFADoc() || !m_pDocument->GetSDKDoc())
+    return 0;
+
+  CPDFSDK_InterForm* pInterForm = m_pDocument->GetSDKDoc()->GetInterForm();
+  if (!pInterForm)
+    return 0;
+
+  return ArgbEncode(pInterForm->GetHighlightAlpha(),
+                    pInterForm->GetHighlightColor(FPDF_FORMFIELD_XFA));
+}
+
+FX_BOOL CPDFXFA_DocEnvironment::NotifySubmit(FX_BOOL bPrevOrPost) {
+  if (bPrevOrPost)
+    return OnBeforeNotifySubmit();
+
+  OnAfterNotifySubmit();
+  return TRUE;
+}
+
+FX_BOOL CPDFXFA_DocEnvironment::OnBeforeNotifySubmit() {
+  if (m_pDocument->GetDocType() != DOCTYPE_DYNAMIC_XFA &&
+      m_pDocument->GetDocType() != DOCTYPE_STATIC_XFA)
+    return TRUE;
+
+  if (!m_pDocument->GetXFADocView())
+    return TRUE;
+
+  CXFA_FFWidgetHandler* pWidgetHandler =
+      m_pDocument->GetXFADocView()->GetWidgetHandler();
+  if (!pWidgetHandler)
+    return TRUE;
+
+  std::unique_ptr<CXFA_WidgetAccIterator> pWidgetAccIterator(
+      m_pDocument->GetXFADocView()->CreateWidgetAccIterator());
+  if (pWidgetAccIterator) {
+    CXFA_EventParam Param;
+    Param.m_eType = XFA_EVENT_PreSubmit;
+    while (CXFA_WidgetAcc* pWidgetAcc = pWidgetAccIterator->MoveToNext())
+      pWidgetHandler->ProcessEvent(pWidgetAcc, &Param);
+  }
+
+  pWidgetAccIterator.reset(
+      m_pDocument->GetXFADocView()->CreateWidgetAccIterator());
+  if (!pWidgetAccIterator)
+    return TRUE;
+
+  CXFA_WidgetAcc* pWidgetAcc = pWidgetAccIterator->MoveToNext();
+  pWidgetAcc = pWidgetAccIterator->MoveToNext();
+  while (pWidgetAcc) {
+    int fRet = pWidgetAcc->ProcessValidate(-1);
+    if (fRet == XFA_EVENTERROR_Error) {
+      CPDFDoc_Environment* pEnv = m_pDocument->GetSDKDoc()->GetEnv();
+      if (!pEnv)
+        return FALSE;
+
+      CFX_WideString ws;
+      ws.FromLocal(IDS_XFA_Validate_Input);
+      CFX_ByteString bs = ws.UTF16LE_Encode();
+      int len = bs.GetLength();
+      pEnv->FFI_Alert((FPDF_WIDESTRING)bs.GetBuffer(len), (FPDF_WIDESTRING)L"",
+                      0, 1);
+      bs.ReleaseBuffer(len);
+      return FALSE;
+    }
+    pWidgetAcc = pWidgetAccIterator->MoveToNext();
+  }
+  m_pDocument->GetXFADocView()->UpdateDocView();
+
+  return TRUE;
+}
+
+void CPDFXFA_DocEnvironment::OnAfterNotifySubmit() {
+  if (m_pDocument->GetDocType() != DOCTYPE_DYNAMIC_XFA &&
+      m_pDocument->GetDocType() != DOCTYPE_STATIC_XFA)
+    return;
+
+  if (!m_pDocument->GetXFADocView())
+    return;
+
+  CXFA_FFWidgetHandler* pWidgetHandler =
+      m_pDocument->GetXFADocView()->GetWidgetHandler();
+  if (!pWidgetHandler)
+    return;
+
+  std::unique_ptr<CXFA_WidgetAccIterator> pWidgetAccIterator(
+      m_pDocument->GetXFADocView()->CreateWidgetAccIterator());
+  if (!pWidgetAccIterator)
+    return;
+
+  CXFA_EventParam Param;
+  Param.m_eType = XFA_EVENT_PostSubmit;
+  CXFA_WidgetAcc* pWidgetAcc = pWidgetAccIterator->MoveToNext();
+  while (pWidgetAcc) {
+    pWidgetHandler->ProcessEvent(pWidgetAcc, &Param);
+    pWidgetAcc = pWidgetAccIterator->MoveToNext();
+  }
+  m_pDocument->GetXFADocView()->UpdateDocView();
+}
+
+FX_BOOL CPDFXFA_DocEnvironment::SubmitData(CXFA_FFDoc* hDoc,
+                                           CXFA_Submit submit) {
+  if (!NotifySubmit(TRUE) || !m_pDocument->GetXFADocView())
+    return FALSE;
+
+  m_pDocument->GetXFADocView()->UpdateDocView();
+  FX_BOOL ret = SubmitDataInternal(hDoc, submit);
+  NotifySubmit(FALSE);
+  return ret;
+}
+
+IFX_FileRead* CPDFXFA_DocEnvironment::OpenLinkedFile(
+    CXFA_FFDoc* hDoc,
+    const CFX_WideString& wsLink) {
+  CPDFDoc_Environment* pEnv = m_pDocument->GetSDKDoc()->GetEnv();
+  if (!pEnv)
+    return FALSE;
+
+  CFX_ByteString bs = wsLink.UTF16LE_Encode();
+  int len = bs.GetLength();
+  FPDF_FILEHANDLER* pFileHandler =
+      pEnv->FFI_OpenFile(0, (FPDF_WIDESTRING)bs.GetBuffer(len), "rb");
+  bs.ReleaseBuffer(len);
+
+  if (!pFileHandler)
+    return nullptr;
+  return new CFPDF_FileStream(pFileHandler);
+}
+
+FX_BOOL CPDFXFA_DocEnvironment::ExportSubmitFile(FPDF_FILEHANDLER* pFileHandler,
+                                                 int fileType,
+                                                 FPDF_DWORD encodeType,
+                                                 FPDF_DWORD flag) {
+  if (!m_pDocument->GetXFADocView())
+    return FALSE;
+
+  CFX_ByteString content;
+  CPDFDoc_Environment* pEnv = m_pDocument->GetSDKDoc()->GetEnv();
+  if (!pEnv)
+    return FALSE;
+
+  CFPDF_FileStream fileStream(pFileHandler);
+  if (fileType == FXFA_SAVEAS_XML) {
+    const char kContent[] = "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\r\n";
+    fileStream.WriteBlock(kContent, 0, strlen(kContent));
+    m_pDocument->GetXFADoc()->SavePackage(XFA_HASHCODE_Data, &fileStream,
+                                          nullptr);
+    return TRUE;
+  }
+
+  if (fileType != FXFA_SAVEAS_XDP)
+    return TRUE;
+
+  if (!flag) {
+    flag = FXFA_CONFIG | FXFA_TEMPLATE | FXFA_LOCALESET | FXFA_DATASETS |
+           FXFA_XMPMETA | FXFA_XFDF | FXFA_FORM;
+  }
+  if (!m_pDocument->GetPDFDoc()) {
+    fileStream.Flush();
+    return FALSE;
+  }
+
+  CPDF_Dictionary* pRoot = m_pDocument->GetPDFDoc()->GetRoot();
+  if (!pRoot) {
+    fileStream.Flush();
+    return FALSE;
+  }
+
+  CPDF_Dictionary* pAcroForm = pRoot->GetDictBy("AcroForm");
+  if (!pAcroForm) {
+    fileStream.Flush();
+    return FALSE;
+  }
+
+  CPDF_Array* pArray = ToArray(pAcroForm->GetObjectBy("XFA"));
+  if (!pArray) {
+    fileStream.Flush();
+    return FALSE;
+  }
+
+  int size = pArray->GetCount();
+  for (int i = 1; i < size; i += 2) {
+    CPDF_Object* pPDFObj = pArray->GetObjectAt(i);
+    CPDF_Object* pPrePDFObj = pArray->GetObjectAt(i - 1);
+    if (!pPrePDFObj->IsString())
+      continue;
+    if (!pPDFObj->IsReference())
+      continue;
+
+    CPDF_Object* pDirectObj = pPDFObj->GetDirect();
+    if (!pDirectObj->IsStream())
+      continue;
+    if (pPrePDFObj->GetString() == "config" && !(flag & FXFA_CONFIG))
+      continue;
+    if (pPrePDFObj->GetString() == "template" && !(flag & FXFA_TEMPLATE))
+      continue;
+    if (pPrePDFObj->GetString() == "localeSet" && !(flag & FXFA_LOCALESET))
+      continue;
+    if (pPrePDFObj->GetString() == "datasets" && !(flag & FXFA_DATASETS))
+      continue;
+    if (pPrePDFObj->GetString() == "xmpmeta" && !(flag & FXFA_XMPMETA))
+      continue;
+    if (pPrePDFObj->GetString() == "xfdf" && !(flag & FXFA_XFDF))
+      continue;
+    if (pPrePDFObj->GetString() == "form" && !(flag & FXFA_FORM))
+      continue;
+    if (pPrePDFObj->GetString() == "form") {
+      m_pDocument->GetXFADoc()->SavePackage(XFA_HASHCODE_Form, &fileStream,
+                                            nullptr);
+    } else if (pPrePDFObj->GetString() == "datasets") {
+      m_pDocument->GetXFADoc()->SavePackage(XFA_HASHCODE_Datasets, &fileStream,
+                                            nullptr);
+    } else {
+      // PDF,creator.
+    }
+  }
+  return TRUE;
+}
+
+void CPDFXFA_DocEnvironment::ToXFAContentFlags(CFX_WideString csSrcContent,
+                                               FPDF_DWORD& flag) {
+  if (csSrcContent.Find(L" config ", 0) != -1)
+    flag |= FXFA_CONFIG;
+  if (csSrcContent.Find(L" template ", 0) != -1)
+    flag |= FXFA_TEMPLATE;
+  if (csSrcContent.Find(L" localeSet ", 0) != -1)
+    flag |= FXFA_LOCALESET;
+  if (csSrcContent.Find(L" datasets ", 0) != -1)
+    flag |= FXFA_DATASETS;
+  if (csSrcContent.Find(L" xmpmeta ", 0) != -1)
+    flag |= FXFA_XMPMETA;
+  if (csSrcContent.Find(L" xfdf ", 0) != -1)
+    flag |= FXFA_XFDF;
+  if (csSrcContent.Find(L" form ", 0) != -1)
+    flag |= FXFA_FORM;
+  if (flag == 0) {
+    flag = FXFA_CONFIG | FXFA_TEMPLATE | FXFA_LOCALESET | FXFA_DATASETS |
+           FXFA_XMPMETA | FXFA_XFDF | FXFA_FORM;
+  }
+}
+
+FX_BOOL CPDFXFA_DocEnvironment::MailToInfo(CFX_WideString& csURL,
+                                           CFX_WideString& csToAddress,
+                                           CFX_WideString& csCCAddress,
+                                           CFX_WideString& csBCCAddress,
+                                           CFX_WideString& csSubject,
+                                           CFX_WideString& csMsg) {
+  CFX_WideString srcURL = csURL;
+  srcURL.TrimLeft();
+  if (srcURL.Left(7).CompareNoCase(L"mailto:") != 0)
+    return FALSE;
+
+  int pos = srcURL.Find(L'?', 0);
+  CFX_WideString tmp;
+  if (pos == -1) {
+    pos = srcURL.Find(L'@', 0);
+    if (pos == -1)
+      return FALSE;
+
+    tmp = srcURL.Right(csURL.GetLength() - 7);
+  } else {
+    tmp = srcURL.Left(pos);
+    tmp = tmp.Right(tmp.GetLength() - 7);
+  }
+  tmp.TrimLeft();
+  tmp.TrimRight();
+
+  csToAddress = tmp;
+
+  srcURL = srcURL.Right(srcURL.GetLength() - (pos + 1));
+  while (!srcURL.IsEmpty()) {
+    srcURL.TrimLeft();
+    srcURL.TrimRight();
+    pos = srcURL.Find(L'&', 0);
+
+    tmp = (pos == -1) ? srcURL : srcURL.Left(pos);
+    tmp.TrimLeft();
+    tmp.TrimRight();
+    if (tmp.GetLength() >= 3 && tmp.Left(3).CompareNoCase(L"cc=") == 0) {
+      tmp = tmp.Right(tmp.GetLength() - 3);
+      if (!csCCAddress.IsEmpty())
+        csCCAddress += L';';
+      csCCAddress += tmp;
+    } else if (tmp.GetLength() >= 4 &&
+               tmp.Left(4).CompareNoCase(L"bcc=") == 0) {
+      tmp = tmp.Right(tmp.GetLength() - 4);
+      if (!csBCCAddress.IsEmpty())
+        csBCCAddress += L';';
+      csBCCAddress += tmp;
+    } else if (tmp.GetLength() >= 8 &&
+               tmp.Left(8).CompareNoCase(L"subject=") == 0) {
+      tmp = tmp.Right(tmp.GetLength() - 8);
+      csSubject += tmp;
+    } else if (tmp.GetLength() >= 5 &&
+               tmp.Left(5).CompareNoCase(L"body=") == 0) {
+      tmp = tmp.Right(tmp.GetLength() - 5);
+      csMsg += tmp;
+    }
+    srcURL = (pos == -1) ? L"" : srcURL.Right(csURL.GetLength() - (pos + 1));
+  }
+  csToAddress.Replace(L",", L";");
+  csCCAddress.Replace(L",", L";");
+  csBCCAddress.Replace(L",", L";");
+  return TRUE;
+}
+
+FX_BOOL CPDFXFA_DocEnvironment::SubmitDataInternal(CXFA_FFDoc* hDoc,
+                                                   CXFA_Submit submit) {
+  CPDFDoc_Environment* pEnv = m_pDocument->GetSDKDoc()->GetEnv();
+  if (!pEnv)
+    return FALSE;
+
+  CFX_WideStringC csURLC;
+  submit.GetSubmitTarget(csURLC);
+  CFX_WideString csURL(csURLC);
+  if (csURL.IsEmpty()) {
+    CFX_WideString ws;
+    ws.FromLocal("Submit cancelled.");
+    CFX_ByteString bs = ws.UTF16LE_Encode();
+    int len = bs.GetLength();
+    pEnv->FFI_Alert((FPDF_WIDESTRING)bs.GetBuffer(len), (FPDF_WIDESTRING)L"", 0,
+                    4);
+    bs.ReleaseBuffer(len);
+    return FALSE;
+  }
+
+  FPDF_BOOL bRet = TRUE;
+  FPDF_FILEHANDLER* pFileHandler = nullptr;
+  int fileFlag = -1;
+  switch (submit.GetSubmitFormat()) {
+    case XFA_ATTRIBUTEENUM_Xdp: {
+      CFX_WideStringC csContentC;
+      submit.GetSubmitXDPContent(csContentC);
+      CFX_WideString csContent;
+      csContent = csContentC;
+      csContent.TrimLeft();
+      csContent.TrimRight();
+      CFX_WideString space;
+      space.FromLocal(" ");
+      csContent = space + csContent + space;
+      FPDF_DWORD flag = 0;
+      if (submit.IsSubmitEmbedPDF())
+        flag |= FXFA_PDF;
+
+      ToXFAContentFlags(csContent, flag);
+      pFileHandler = pEnv->FFI_OpenFile(FXFA_SAVEAS_XDP, nullptr, "wb");
+      fileFlag = FXFA_SAVEAS_XDP;
+      ExportSubmitFile(pFileHandler, FXFA_SAVEAS_XDP, 0, flag);
+      break;
+    }
+    case XFA_ATTRIBUTEENUM_Xml:
+      pFileHandler = pEnv->FFI_OpenFile(FXFA_SAVEAS_XML, nullptr, "wb");
+      fileFlag = FXFA_SAVEAS_XML;
+      ExportSubmitFile(pFileHandler, FXFA_SAVEAS_XML, 0, FXFA_XFA_ALL);
+      break;
+    case XFA_ATTRIBUTEENUM_Pdf:
+      break;
+    case XFA_ATTRIBUTEENUM_Urlencoded:
+      pFileHandler = pEnv->FFI_OpenFile(FXFA_SAVEAS_XML, nullptr, "wb");
+      fileFlag = FXFA_SAVEAS_XML;
+      ExportSubmitFile(pFileHandler, FXFA_SAVEAS_XML, 0, FXFA_XFA_ALL);
+      break;
+    default:
+      return false;
+  }
+  if (!pFileHandler)
+    return FALSE;
+  if (csURL.Left(7).CompareNoCase(L"mailto:") == 0) {
+    CFX_WideString csToAddress;
+    CFX_WideString csCCAddress;
+    CFX_WideString csBCCAddress;
+    CFX_WideString csSubject;
+    CFX_WideString csMsg;
+    bRet = MailToInfo(csURL, csToAddress, csCCAddress, csBCCAddress, csSubject,
+                      csMsg);
+    if (!bRet)
+      return FALSE;
+
+    CFX_ByteString bsTo = CFX_WideString(csToAddress).UTF16LE_Encode();
+    CFX_ByteString bsCC = CFX_WideString(csCCAddress).UTF16LE_Encode();
+    CFX_ByteString bsBcc = CFX_WideString(csBCCAddress).UTF16LE_Encode();
+    CFX_ByteString bsSubject = CFX_WideString(csSubject).UTF16LE_Encode();
+    CFX_ByteString bsMsg = CFX_WideString(csMsg).UTF16LE_Encode();
+    FPDF_WIDESTRING pTo = (FPDF_WIDESTRING)bsTo.GetBuffer(bsTo.GetLength());
+    FPDF_WIDESTRING pCC = (FPDF_WIDESTRING)bsCC.GetBuffer(bsCC.GetLength());
+    FPDF_WIDESTRING pBcc = (FPDF_WIDESTRING)bsBcc.GetBuffer(bsBcc.GetLength());
+    FPDF_WIDESTRING pSubject =
+        (FPDF_WIDESTRING)bsSubject.GetBuffer(bsSubject.GetLength());
+    FPDF_WIDESTRING pMsg = (FPDF_WIDESTRING)bsMsg.GetBuffer(bsMsg.GetLength());
+    pEnv->FFI_EmailTo(pFileHandler, pTo, pSubject, pCC, pBcc, pMsg);
+    bsTo.ReleaseBuffer();
+    bsCC.ReleaseBuffer();
+    bsBcc.ReleaseBuffer();
+    bsSubject.ReleaseBuffer();
+    bsMsg.ReleaseBuffer();
+  } else {
+    // HTTP or FTP
+    CFX_WideString ws;
+    CFX_ByteString bs = csURL.UTF16LE_Encode();
+    int len = bs.GetLength();
+    pEnv->FFI_UploadTo(pFileHandler, fileFlag,
+                       (FPDF_WIDESTRING)bs.GetBuffer(len));
+    bs.ReleaseBuffer(len);
+  }
+  return bRet;
+}
+
+FX_BOOL CPDFXFA_DocEnvironment::SetGlobalProperty(
+    CXFA_FFDoc* hDoc,
+    const CFX_ByteStringC& szPropName,
+    CFXJSE_Value* pValue) {
+  if (hDoc != m_pDocument->GetXFADoc())
+    return FALSE;
+
+  if (m_pDocument->GetSDKDoc() &&
+      m_pDocument->GetSDKDoc()->GetEnv()->GetJSRuntime())
+    return m_pDocument->GetSDKDoc()->GetEnv()->GetJSRuntime()->SetValueByName(
+        szPropName, pValue);
+  return FALSE;
+}
+
+FX_BOOL CPDFXFA_DocEnvironment::GetGlobalProperty(
+    CXFA_FFDoc* hDoc,
+    const CFX_ByteStringC& szPropName,
+    CFXJSE_Value* pValue) {
+  if (hDoc != m_pDocument->GetXFADoc())
+    return FALSE;
+  if (!m_pDocument->GetSDKDoc() ||
+      !m_pDocument->GetSDKDoc()->GetEnv()->GetJSRuntime())
+    return FALSE;
+
+  if (!m_pJSContext) {
+    m_pDocument->GetSDKDoc()->GetEnv()->GetJSRuntime()->SetReaderDocument(
+        m_pDocument->GetSDKDoc());
+    m_pJSContext =
+        m_pDocument->GetSDKDoc()->GetEnv()->GetJSRuntime()->NewContext();
+  }
+
+  return m_pDocument->GetSDKDoc()->GetEnv()->GetJSRuntime()->GetValueByName(
+      szPropName, pValue);
+}
diff --git a/fpdfsdk/fpdfxfa/fpdfxfa_doc.cpp b/fpdfsdk/fpdfxfa/fpdfxfa_doc.cpp
index 57de222e1c..6c691e6c9b 100644
--- a/fpdfsdk/fpdfxfa/fpdfxfa_doc.cpp
+++ b/fpdfsdk/fpdfxfa/fpdfxfa_doc.cpp
@@ -6,10 +6,7 @@
 
 #include "fpdfsdk/fpdfxfa/include/fpdfxfa_doc.h"
 
-#include "core/fpdfapi/fpdf_parser/include/cpdf_array.h"
 #include "core/fpdfapi/fpdf_parser/include/cpdf_document.h"
-#include "core/fpdfapi/fpdf_parser/include/cpdf_stream_acc.h"
-#include "core/fpdfapi/fpdf_parser/include/cpdf_string.h"
 #include "fpdfsdk/fpdfxfa/include/fpdfxfa_app.h"
 #include "fpdfsdk/fpdfxfa/include/fpdfxfa_page.h"
 #include "fpdfsdk/fpdfxfa/include/fpdfxfa_util.h"
@@ -25,24 +22,8 @@
 #include "xfa/fxfa/include/xfa_ffdoc.h"
 #include "xfa/fxfa/include/xfa_ffdocview.h"
 #include "xfa/fxfa/include/xfa_ffpageview.h"
-#include "xfa/fxfa/include/xfa_ffwidget.h"
 #include "xfa/fxfa/include/xfa_ffwidgethandler.h"
 
-#define IDS_XFA_Validate_Input                                          \
-  "At least one required field was empty. Please fill in the required " \
-  "fields\r\n(highlighted) before continuing."
-
-// submit
-#define FXFA_CONFIG 0x00000001
-#define FXFA_TEMPLATE 0x00000010
-#define FXFA_LOCALESET 0x00000100
-#define FXFA_DATASETS 0x00001000
-#define FXFA_XMPMETA 0x00010000
-#define FXFA_XFDF 0x00100000
-#define FXFA_FORM 0x01000000
-#define FXFA_PDF 0x10000000
-#define FXFA_XFA_ALL 0x01111111
-
 #ifndef _WIN32
 extern void SetLastError(int err);
 extern int GetLastError();
@@ -54,9 +35,9 @@ CPDFXFA_Document::CPDFXFA_Document(std::unique_ptr<CPDF_Document> pPDFDoc,
       m_pPDFDoc(std::move(pPDFDoc)),
       m_pXFADocView(nullptr),
       m_pApp(pProvider),
-      m_pJSContext(nullptr),
       m_nLoadStatus(FXFA_LOADSTATUS_PRELOAD),
-      m_nPageCount(0) {}
+      m_nPageCount(0),
+      m_DocEnv(this) {}
 
 CPDFXFA_Document::~CPDFXFA_Document() {
   m_nLoadStatus = FXFA_LOADSTATUS_CLOSING;
@@ -70,8 +51,6 @@ CPDFXFA_Document::~CPDFXFA_Document() {
     }
     m_pXFADoc.reset();
   }
-  if (m_pJSContext && m_pSDKDoc && m_pSDKDoc->GetEnv())
-    m_pSDKDoc->GetEnv()->GetJSRuntime()->ReleaseContext(m_pJSContext);
 
   m_nLoadStatus = FXFA_LOADSTATUS_CLOSED;
 }
@@ -88,7 +67,7 @@ FX_BOOL CPDFXFA_Document::LoadXFADoc() {
   if (!pApp)
     return FALSE;
 
-  m_pXFADoc.reset(pApp->CreateDoc(this, m_pPDFDoc.get()));
+  m_pXFADoc.reset(pApp->CreateDoc(&m_DocEnv, m_pPDFDoc.get()));
   if (!m_pXFADoc) {
     SetLastError(FPDF_ERR_XFALOAD);
     return FALSE;
@@ -219,958 +198,7 @@ CPDFSDK_Document* CPDFXFA_Document::GetSDKDocument(
   return m_pSDKDoc.get();
 }
 
-void CPDFXFA_Document::SetChangeMark(CXFA_FFDoc* hDoc) {
-  if (hDoc == m_pXFADoc.get() && m_pSDKDoc)
-    m_pSDKDoc->SetChangeMark();
-}
-
-void CPDFXFA_Document::InvalidateRect(CXFA_FFPageView* pPageView,
-                                      const CFX_RectF& rt,
-                                      uint32_t dwFlags /* = 0 */) {
-  if (!m_pXFADoc || !m_pSDKDoc)
-    return;
-
-  if (m_iDocType != DOCTYPE_DYNAMIC_XFA)
-    return;
-
-  CPDFXFA_Page* pPage = GetPage(pPageView);
-  if (!pPage)
-    return;
-
-  CPDFDoc_Environment* pEnv = m_pSDKDoc->GetEnv();
-  if (!pEnv)
-    return;
-
-  CFX_FloatRect rcPage = CFX_FloatRect::FromCFXRectF(rt);
-  pEnv->FFI_Invalidate((FPDF_PAGE)pPage, rcPage.left, rcPage.bottom,
-                       rcPage.right, rcPage.top);
-}
-
-void CPDFXFA_Document::DisplayCaret(CXFA_FFWidget* hWidget,
-                                    FX_BOOL bVisible,
-                                    const CFX_RectF* pRtAnchor) {
-  if (!hWidget || !pRtAnchor || !m_pXFADoc || !m_pSDKDoc || !m_pXFADocView)
-    return;
-
-  if (m_iDocType != DOCTYPE_DYNAMIC_XFA)
-    return;
-
-  CXFA_FFWidgetHandler* pWidgetHandler = m_pXFADocView->GetWidgetHandler();
-  if (!pWidgetHandler)
-    return;
-
-  CXFA_FFPageView* pPageView = hWidget->GetPageView();
-  if (!pPageView)
-    return;
-
-  CPDFXFA_Page* pPage = GetPage(pPageView);
-  if (!pPage)
-    return;
-
-  CPDFDoc_Environment* pEnv = m_pSDKDoc->GetEnv();
-  if (!pEnv)
-    return;
-
-  CFX_FloatRect rcCaret = CFX_FloatRect::FromCFXRectF(*pRtAnchor);
-  pEnv->FFI_DisplayCaret((FPDF_PAGE)pPage, bVisible, rcCaret.left, rcCaret.top,
-                         rcCaret.right, rcCaret.bottom);
-}
-
-FX_BOOL CPDFXFA_Document::GetPopupPos(CXFA_FFWidget* hWidget,
-                                      FX_FLOAT fMinPopup,
-                                      FX_FLOAT fMaxPopup,
-                                      const CFX_RectF& rtAnchor,
-                                      CFX_RectF& rtPopup) {
-  if (!hWidget)
-    return FALSE;
-
-  CXFA_FFPageView* pXFAPageView = hWidget->GetPageView();
-  if (!pXFAPageView)
-    return FALSE;
-
-  CPDFXFA_Page* pPage = GetPage(pXFAPageView);
-  if (!pPage)
-    return FALSE;
-
-  CXFA_WidgetAcc* pWidgetAcc = hWidget->GetDataAcc();
-  int nRotate = pWidgetAcc->GetRotate();
-  CPDFDoc_Environment* pEnv = m_pSDKDoc->GetEnv();
-  if (!pEnv)
-    return FALSE;
-
-  FS_RECTF pageViewRect = {0.0f, 0.0f, 0.0f, 0.0f};
-  pEnv->FFI_GetPageViewRect(pPage, pageViewRect);
-
-  int t1;
-  int t2;
-  CFX_FloatRect rcAnchor = CFX_FloatRect::FromCFXRectF(rtAnchor);
-  switch (nRotate) {
-    case 90: {
-      t1 = (int)(pageViewRect.right - rcAnchor.right);
-      t2 = (int)(rcAnchor.left - pageViewRect.left);
-      if (rcAnchor.bottom < pageViewRect.bottom)
-        rtPopup.left += rcAnchor.bottom - pageViewRect.bottom;
-      break;
-    }
-    case 180: {
-      t2 = (int)(pageViewRect.top - rcAnchor.top);
-      t1 = (int)(rcAnchor.bottom - pageViewRect.bottom);
-      if (rcAnchor.left < pageViewRect.left)
-        rtPopup.left += rcAnchor.left - pageViewRect.left;
-      break;
-    }
-    case 270: {
-      t1 = (int)(rcAnchor.left - pageViewRect.left);
-      t2 = (int)(pageViewRect.right - rcAnchor.right);
-      if (rcAnchor.top > pageViewRect.top)
-        rtPopup.left -= rcAnchor.top - pageViewRect.top;
-      break;
-    }
-    case 0:
-    default: {
-      t1 = (int)(pageViewRect.top - rcAnchor.top);
-      t2 = (int)(rcAnchor.bottom - pageViewRect.bottom);
-      if (rcAnchor.right > pageViewRect.right)
-        rtPopup.left -= rcAnchor.right - pageViewRect.right;
-      break;
-    }
-  }
-
-  int t;
-  uint32_t dwPos;
-  if (t1 <= 0 && t2 <= 0)
-    return FALSE;
-  if (t1 <= 0) {
-    t = t2;
-    dwPos = 1;
-  } else if (t2 <= 0) {
-    t = t1;
-    dwPos = 0;
-  } else if (t1 > t2) {
-    t = t1;
-    dwPos = 0;
-  } else {
-    t = t2;
-    dwPos = 1;
-  }
-
-  FX_FLOAT fPopupHeight;
-  if (t < fMinPopup)
-    fPopupHeight = fMinPopup;
-  else if (t > fMaxPopup)
-    fPopupHeight = fMaxPopup;
-  else
-    fPopupHeight = static_cast<FX_FLOAT>(t);
-
-  switch (nRotate) {
-    case 0:
-    case 180: {
-      if (dwPos == 0) {
-        rtPopup.top = rtAnchor.height;
-        rtPopup.height = fPopupHeight;
-      } else {
-        rtPopup.top = -fPopupHeight;
-        rtPopup.height = fPopupHeight;
-      }
-      break;
-    }
-    case 90:
-    case 270: {
-      if (dwPos == 0) {
-        rtPopup.top = rtAnchor.width;
-        rtPopup.height = fPopupHeight;
-      } else {
-        rtPopup.top = -fPopupHeight;
-        rtPopup.height = fPopupHeight;
-      }
-      break;
-    }
-    default:
-      break;
-  }
-
-  return TRUE;
-}
-
-FX_BOOL CPDFXFA_Document::PopupMenu(CXFA_FFWidget* hWidget,
-                                    CFX_PointF ptPopup) {
-  if (!hWidget)
-    return FALSE;
-
-  CXFA_FFPageView* pXFAPageView = hWidget->GetPageView();
-  if (!pXFAPageView)
-    return FALSE;
-
-  CPDFXFA_Page* pPage = GetPage(pXFAPageView);
-  if (!pPage)
-    return FALSE;
-
-  CPDFDoc_Environment* pEnv = m_pSDKDoc->GetEnv();
-  if (!pEnv)
-    return FALSE;
-
-  int menuFlag = 0;
-  if (hWidget->CanUndo())
-    menuFlag |= FXFA_MENU_UNDO;
-  if (hWidget->CanRedo())
-    menuFlag |= FXFA_MENU_REDO;
-  if (hWidget->CanPaste())
-    menuFlag |= FXFA_MENU_PASTE;
-  if (hWidget->CanCopy())
-    menuFlag |= FXFA_MENU_COPY;
-  if (hWidget->CanCut())
-    menuFlag |= FXFA_MENU_CUT;
-  if (hWidget->CanSelectAll())
-    menuFlag |= FXFA_MENU_SELECTALL;
-
-  return pEnv->FFI_PopupMenu(pPage, hWidget, menuFlag, ptPopup, nullptr);
-}
-
-void CPDFXFA_Document::PageViewEvent(CXFA_FFPageView* pPageView,
-                                     uint32_t dwFlags) {
-  CPDFDoc_Environment* pEnv = m_pSDKDoc->GetEnv();
-  if (!pEnv)
-    return;
-
-  if (m_nLoadStatus == FXFA_LOADSTATUS_LOADING ||
-      m_nLoadStatus == FXFA_LOADSTATUS_CLOSING ||
-      XFA_PAGEVIEWEVENT_StopLayout != dwFlags)
-    return;
-
-  int nNewCount = GetPageCount();
-  if (nNewCount == m_nPageCount)
-    return;
-
-  CXFA_FFDocView* pXFADocView = GetXFADocView();
-  if (!pXFADocView)
-    return;
-
-  for (int iPageIter = 0; iPageIter < m_nPageCount; iPageIter++) {
-    CPDFXFA_Page* pPage = m_XFAPageList.GetAt(iPageIter);
-    if (!pPage)
-      continue;
-
-    m_pSDKDoc->RemovePageView(pPage);
-    pPage->SetXFAPageView(pXFADocView->GetPageView(iPageIter));
-  }
-
-  int flag = (nNewCount < m_nPageCount) ? FXFA_PAGEVIEWEVENT_POSTREMOVED
-                                        : FXFA_PAGEVIEWEVENT_POSTADDED;
-  int count = FXSYS_abs(nNewCount - m_nPageCount);
-  m_nPageCount = nNewCount;
-  m_XFAPageList.SetSize(nNewCount);
-  pEnv->FFI_PageEvent(count, flag);
-}
-
-void CPDFXFA_Document::WidgetPostAdd(CXFA_FFWidget* hWidget,
-                                     CXFA_WidgetAcc* pWidgetData) {
-  if (m_iDocType != DOCTYPE_DYNAMIC_XFA || !hWidget)
-    return;
-
-  CXFA_FFPageView* pPageView = hWidget->GetPageView();
-  if (!pPageView)
-    return;
-
-  CPDFXFA_Page* pXFAPage = GetPage(pPageView);
-  if (!pXFAPage)
-    return;
-
-  m_pSDKDoc->GetPageView(pXFAPage, true)->AddAnnot(hWidget);
-}
-
-void CPDFXFA_Document::WidgetPreRemove(CXFA_FFWidget* hWidget,
-                                       CXFA_WidgetAcc* pWidgetData) {
-  if (m_iDocType != DOCTYPE_DYNAMIC_XFA || !hWidget)
-    return;
-
-  CXFA_FFPageView* pPageView = hWidget->GetPageView();
-  if (!pPageView)
-    return;
-
-  CPDFXFA_Page* pXFAPage = GetPage(pPageView);
-  if (!pXFAPage)
-    return;
-
-  CPDFSDK_PageView* pSdkPageView = m_pSDKDoc->GetPageView(pXFAPage, true);
-  if (CPDFSDK_Annot* pAnnot = pSdkPageView->GetAnnotByXFAWidget(hWidget))
-    pSdkPageView->DeleteAnnot(pAnnot);
-}
-
-int32_t CPDFXFA_Document::CountPages(CXFA_FFDoc* hDoc) {
-  if (hDoc == m_pXFADoc.get() && m_pSDKDoc)
-    return GetPageCount();
-  return 0;
-}
-
-int32_t CPDFXFA_Document::GetCurrentPage(CXFA_FFDoc* hDoc) {
-  if (hDoc != m_pXFADoc.get() || !m_pSDKDoc)
-    return -1;
-  if (m_iDocType != DOCTYPE_DYNAMIC_XFA)
-    return -1;
-
-  CPDFDoc_Environment* pEnv = m_pSDKDoc->GetEnv();
-  if (!pEnv)
-    return -1;
-
-  return pEnv->FFI_GetCurrentPageIndex(this);
-}
-
-void CPDFXFA_Document::SetCurrentPage(CXFA_FFDoc* hDoc, int32_t iCurPage) {
-  if (hDoc != m_pXFADoc.get() || !m_pSDKDoc ||
-      m_iDocType != DOCTYPE_DYNAMIC_XFA || iCurPage < 0 ||
-      iCurPage >= m_pSDKDoc->GetPageCount()) {
-    return;
-  }
-
-  CPDFDoc_Environment* pEnv = m_pSDKDoc->GetEnv();
-  if (!pEnv)
-    return;
-  pEnv->FFI_SetCurrentPage(this, iCurPage);
-}
-
-FX_BOOL CPDFXFA_Document::IsCalculationsEnabled(CXFA_FFDoc* hDoc) {
-  if (hDoc != m_pXFADoc.get() || !m_pSDKDoc)
-    return FALSE;
-  if (m_pSDKDoc->GetInterForm())
-    return m_pSDKDoc->GetInterForm()->IsXfaCalculateEnabled();
-  return FALSE;
-}
-
-void CPDFXFA_Document::SetCalculationsEnabled(CXFA_FFDoc* hDoc,
-                                              FX_BOOL bEnabled) {
-  if (hDoc != m_pXFADoc.get() || !m_pSDKDoc)
-    return;
-  if (m_pSDKDoc->GetInterForm())
-    m_pSDKDoc->GetInterForm()->XfaEnableCalculate(bEnabled);
-}
-
-void CPDFXFA_Document::GetTitle(CXFA_FFDoc* hDoc, CFX_WideString& wsTitle) {
-  if (hDoc != m_pXFADoc.get() || !m_pPDFDoc)
-    return;
-
-  CPDF_Dictionary* pInfoDict = m_pPDFDoc->GetInfo();
-  if (!pInfoDict)
-    return;
-
-  CFX_ByteString csTitle = pInfoDict->GetStringBy("Title");
-  wsTitle = wsTitle.FromLocal(csTitle.GetBuffer(csTitle.GetLength()));
-  csTitle.ReleaseBuffer(csTitle.GetLength());
-}
-
-void CPDFXFA_Document::SetTitle(CXFA_FFDoc* hDoc,
-                                const CFX_WideString& wsTitle) {
-  if (hDoc != m_pXFADoc.get() || !m_pPDFDoc)
-    return;
-
-  if (CPDF_Dictionary* pInfoDict = m_pPDFDoc->GetInfo())
-    pInfoDict->SetAt("Title", new CPDF_String(wsTitle));
-}
-
-void CPDFXFA_Document::ExportData(CXFA_FFDoc* hDoc,
-                                  const CFX_WideString& wsFilePath,
-                                  FX_BOOL bXDP) {
-  if (hDoc != m_pXFADoc.get())
-    return;
-
-  if (m_iDocType != DOCTYPE_DYNAMIC_XFA && m_iDocType != DOCTYPE_STATIC_XFA)
-    return;
-
-  CPDFDoc_Environment* pEnv = m_pSDKDoc->GetEnv();
-  if (!pEnv)
-    return;
-
-  int fileType = bXDP ? FXFA_SAVEAS_XDP : FXFA_SAVEAS_XML;
-  CFX_ByteString bs = wsFilePath.UTF16LE_Encode();
-  if (wsFilePath.IsEmpty()) {
-    if (!pEnv->GetFormFillInfo() || !pEnv->GetFormFillInfo()->m_pJsPlatform)
-      return;
-
-    CFX_WideString filepath = pEnv->JS_fieldBrowse();
-    bs = filepath.UTF16LE_Encode();
-  }
-  int len = bs.GetLength();
-  FPDF_FILEHANDLER* pFileHandler =
-      pEnv->FFI_OpenFile(bXDP ? FXFA_SAVEAS_XDP : FXFA_SAVEAS_XML,
-                         (FPDF_WIDESTRING)bs.GetBuffer(len), "wb");
-  bs.ReleaseBuffer(len);
-  if (!pFileHandler)
-    return;
-
-  CFPDF_FileStream fileWrite(pFileHandler);
-  CFX_ByteString content;
-  if (fileType == FXFA_SAVEAS_XML) {
-    content = "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\r\n";
-    fileWrite.WriteBlock(content.c_str(), fileWrite.GetSize(),
-                         content.GetLength());
-    m_pXFADocView->GetDoc()->SavePackage(XFA_HASHCODE_Data, &fileWrite,
-                                         nullptr);
-  } else if (fileType == FXFA_SAVEAS_XDP) {
-    if (!m_pPDFDoc)
-      return;
-
-    CPDF_Dictionary* pRoot = m_pPDFDoc->GetRoot();
-    if (!pRoot)
-      return;
-
-    CPDF_Dictionary* pAcroForm = pRoot->GetDictBy("AcroForm");
-    if (!pAcroForm)
-      return;
-
-    CPDF_Array* pArray = ToArray(pAcroForm->GetObjectBy("XFA"));
-    if (!pArray)
-      return;
-
-    int size = pArray->GetCount();
-    for (int i = 1; i < size; i += 2) {
-      CPDF_Object* pPDFObj = pArray->GetObjectAt(i);
-      CPDF_Object* pPrePDFObj = pArray->GetObjectAt(i - 1);
-      if (!pPrePDFObj->IsString())
-        continue;
-      if (!pPDFObj->IsReference())
-        continue;
-
-      CPDF_Stream* pStream = ToStream(pPDFObj->GetDirect());
-      if (!pStream)
-        continue;
-      if (pPrePDFObj->GetString() == "form") {
-        m_pXFADocView->GetDoc()->SavePackage(XFA_HASHCODE_Form, &fileWrite,
-                                             nullptr);
-        continue;
-      }
-      if (pPrePDFObj->GetString() == "datasets") {
-        m_pXFADocView->GetDoc()->SavePackage(XFA_HASHCODE_Datasets, &fileWrite,
-                                             nullptr);
-        continue;
-      }
-      if (i == size - 1) {
-        CFX_WideString wPath = CFX_WideString::FromUTF16LE(
-            reinterpret_cast<const unsigned short*>(bs.c_str()),
-            bs.GetLength() / sizeof(unsigned short));
-        CFX_ByteString bPath = wPath.UTF8Encode();
-        const char* szFormat =
-            "\n<pdf href=\"%s\" xmlns=\"http://ns.adobe.com/xdp/pdf/\"/>";
-        content.Format(szFormat, bPath.c_str());
-        fileWrite.WriteBlock(content.c_str(), fileWrite.GetSize(),
-                             content.GetLength());
-      }
-      std::unique_ptr<CPDF_StreamAcc> pAcc(new CPDF_StreamAcc);
-      pAcc->LoadAllData(pStream);
-      fileWrite.WriteBlock(pAcc->GetData(), fileWrite.GetSize(),
-                           pAcc->GetSize());
-    }
-  }
-  if (!fileWrite.Flush()) {
-    // Ignoring flush error.
-  }
-}
-
-void CPDFXFA_Document::GotoURL(CXFA_FFDoc* hDoc,
-                               const CFX_WideString& bsURL,
-                               FX_BOOL bAppend) {
-  if (hDoc != m_pXFADoc.get())
-    return;
-
-  if (m_iDocType != DOCTYPE_DYNAMIC_XFA)
-    return;
-
-  CPDFDoc_Environment* pEnv = m_pSDKDoc->GetEnv();
-  if (!pEnv)
-    return;
-
-  CFX_WideStringC str(bsURL.c_str());
-
-  pEnv->FFI_GotoURL(this, str, bAppend);
-}
-
-FX_BOOL CPDFXFA_Document::IsValidationsEnabled(CXFA_FFDoc* hDoc) {
-  if (hDoc != m_pXFADoc.get() || !m_pSDKDoc)
-    return FALSE;
-  if (m_pSDKDoc->GetInterForm())
-    return m_pSDKDoc->GetInterForm()->IsXfaValidationsEnabled();
-  return TRUE;
-}
-
-void CPDFXFA_Document::SetValidationsEnabled(CXFA_FFDoc* hDoc,
-                                             FX_BOOL bEnabled) {
-  if (hDoc != m_pXFADoc.get() || !m_pSDKDoc)
-    return;
-  if (m_pSDKDoc->GetInterForm())
-    m_pSDKDoc->GetInterForm()->XfaSetValidationsEnabled(bEnabled);
-}
-
-void CPDFXFA_Document::SetFocusWidget(CXFA_FFDoc* hDoc,
-                                      CXFA_FFWidget* hWidget) {
-  if (hDoc != m_pXFADoc.get())
-    return;
-
-  if (!hWidget) {
-    m_pSDKDoc->SetFocusAnnot(nullptr);
-    return;
-  }
-
-  int pageViewCount = m_pSDKDoc->GetPageViewCount();
-  for (int i = 0; i < pageViewCount; i++) {
-    CPDFSDK_PageView* pPageView = m_pSDKDoc->GetPageView(i);
-    if (!pPageView)
-      continue;
-
-    CPDFSDK_Annot* pAnnot = pPageView->GetAnnotByXFAWidget(hWidget);
-    if (pAnnot) {
-      m_pSDKDoc->SetFocusAnnot(pAnnot);
-      break;
-    }
-  }
-}
-
-void CPDFXFA_Document::Print(CXFA_FFDoc* hDoc,
-                             int32_t nStartPage,
-                             int32_t nEndPage,
-                             uint32_t dwOptions) {
-  if (hDoc != m_pXFADoc.get())
-    return;
-
-  CPDFDoc_Environment* pEnv = m_pSDKDoc->GetEnv();
-  if (!pEnv || !pEnv->GetFormFillInfo() ||
-      !pEnv->GetFormFillInfo()->m_pJsPlatform ||
-      !pEnv->GetFormFillInfo()->m_pJsPlatform->Doc_print) {
-    return;
-  }
-
-  pEnv->GetFormFillInfo()->m_pJsPlatform->Doc_print(
-      pEnv->GetFormFillInfo()->m_pJsPlatform,
-      dwOptions & XFA_PRINTOPT_ShowDialog, nStartPage, nEndPage,
-      dwOptions & XFA_PRINTOPT_CanCancel, dwOptions & XFA_PRINTOPT_ShrinkPage,
-      dwOptions & XFA_PRINTOPT_AsImage, dwOptions & XFA_PRINTOPT_ReverseOrder,
-      dwOptions & XFA_PRINTOPT_PrintAnnot);
-}
-
-FX_ARGB CPDFXFA_Document::GetHighlightColor(CXFA_FFDoc* hDoc) {
-  if (hDoc != m_pXFADoc.get() || !m_pSDKDoc)
-    return 0;
-
-  CPDFSDK_InterForm* pInterForm = m_pSDKDoc->GetInterForm();
-  if (!pInterForm)
-    return 0;
-
-  return ArgbEncode(pInterForm->GetHighlightAlpha(),
-                    pInterForm->GetHighlightColor(FPDF_FORMFIELD_XFA));
-}
-
-FX_BOOL CPDFXFA_Document::NotifySubmit(FX_BOOL bPrevOrPost) {
-  if (bPrevOrPost)
-    return OnBeforeNotifySubmit();
-
-  OnAfterNotifySubmit();
-  return TRUE;
-}
-
-FX_BOOL CPDFXFA_Document::OnBeforeNotifySubmit() {
-  if (m_iDocType != DOCTYPE_DYNAMIC_XFA && m_iDocType != DOCTYPE_STATIC_XFA)
-    return TRUE;
-
-  if (!m_pXFADocView)
-    return TRUE;
-
-  CXFA_FFWidgetHandler* pWidgetHandler = m_pXFADocView->GetWidgetHandler();
-  if (!pWidgetHandler)
-    return TRUE;
-
-  std::unique_ptr<CXFA_WidgetAccIterator> pWidgetAccIterator(
-      m_pXFADocView->CreateWidgetAccIterator());
-  if (pWidgetAccIterator) {
-    CXFA_EventParam Param;
-    Param.m_eType = XFA_EVENT_PreSubmit;
-    while (CXFA_WidgetAcc* pWidgetAcc = pWidgetAccIterator->MoveToNext())
-      pWidgetHandler->ProcessEvent(pWidgetAcc, &Param);
-  }
-
-  pWidgetAccIterator.reset(m_pXFADocView->CreateWidgetAccIterator());
-  if (!pWidgetAccIterator)
-    return TRUE;
-
-  CXFA_WidgetAcc* pWidgetAcc = pWidgetAccIterator->MoveToNext();
-  pWidgetAcc = pWidgetAccIterator->MoveToNext();
-  while (pWidgetAcc) {
-    int fRet = pWidgetAcc->ProcessValidate(-1);
-    if (fRet == XFA_EVENTERROR_Error) {
-      CPDFDoc_Environment* pEnv = m_pSDKDoc->GetEnv();
-      if (!pEnv)
-        return FALSE;
-
-      CFX_WideString ws;
-      ws.FromLocal(IDS_XFA_Validate_Input);
-      CFX_ByteString bs = ws.UTF16LE_Encode();
-      int len = bs.GetLength();
-      pEnv->FFI_Alert((FPDF_WIDESTRING)bs.GetBuffer(len), (FPDF_WIDESTRING)L"",
-                      0, 1);
-      bs.ReleaseBuffer(len);
-      return FALSE;
-    }
-    pWidgetAcc = pWidgetAccIterator->MoveToNext();
-  }
-  m_pXFADocView->UpdateDocView();
-
-  return TRUE;
-}
-
-void CPDFXFA_Document::OnAfterNotifySubmit() {
-  if (m_iDocType != DOCTYPE_DYNAMIC_XFA && m_iDocType != DOCTYPE_STATIC_XFA)
-    return;
-
-  if (!m_pXFADocView)
-    return;
-
-  CXFA_FFWidgetHandler* pWidgetHandler = m_pXFADocView->GetWidgetHandler();
-  if (!pWidgetHandler)
-    return;
-
-  std::unique_ptr<CXFA_WidgetAccIterator> pWidgetAccIterator(
-      m_pXFADocView->CreateWidgetAccIterator());
-  if (!pWidgetAccIterator)
-    return;
-
-  CXFA_EventParam Param;
-  Param.m_eType = XFA_EVENT_PostSubmit;
-  CXFA_WidgetAcc* pWidgetAcc = pWidgetAccIterator->MoveToNext();
-  while (pWidgetAcc) {
-    pWidgetHandler->ProcessEvent(pWidgetAcc, &Param);
-    pWidgetAcc = pWidgetAccIterator->MoveToNext();
-  }
-  m_pXFADocView->UpdateDocView();
-}
-
-FX_BOOL CPDFXFA_Document::SubmitData(CXFA_FFDoc* hDoc, CXFA_Submit submit) {
-  if (!NotifySubmit(TRUE) || !m_pXFADocView)
-    return FALSE;
-
-  m_pXFADocView->UpdateDocView();
-  FX_BOOL ret = SubmitDataInternal(hDoc, submit);
-  NotifySubmit(FALSE);
-  return ret;
-}
-
-IFX_FileRead* CPDFXFA_Document::OpenLinkedFile(CXFA_FFDoc* hDoc,
-                                               const CFX_WideString& wsLink) {
-  CPDFDoc_Environment* pEnv = m_pSDKDoc->GetEnv();
-  if (!pEnv)
-    return FALSE;
-
-  CFX_ByteString bs = wsLink.UTF16LE_Encode();
-  int len = bs.GetLength();
-  FPDF_FILEHANDLER* pFileHandler =
-      pEnv->FFI_OpenFile(0, (FPDF_WIDESTRING)bs.GetBuffer(len), "rb");
-  bs.ReleaseBuffer(len);
-
-  if (!pFileHandler)
-    return nullptr;
-  return new CFPDF_FileStream(pFileHandler);
-}
-
-FX_BOOL CPDFXFA_Document::ExportSubmitFile(FPDF_FILEHANDLER* pFileHandler,
-                                           int fileType,
-                                           FPDF_DWORD encodeType,
-                                           FPDF_DWORD flag) {
-  if (!m_pXFADocView)
-    return FALSE;
-
-  CFX_ByteString content;
-  CPDFDoc_Environment* pEnv = m_pSDKDoc->GetEnv();
-  if (!pEnv)
-    return FALSE;
-
-  CFPDF_FileStream fileStream(pFileHandler);
-  if (fileType == FXFA_SAVEAS_XML) {
-    const char kContent[] = "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\r\n";
-    fileStream.WriteBlock(kContent, 0, strlen(kContent));
-    m_pXFADoc->SavePackage(XFA_HASHCODE_Data, &fileStream, nullptr);
-    return TRUE;
-  }
-
-  if (fileType != FXFA_SAVEAS_XDP)
-    return TRUE;
-
-  if (!flag) {
-    flag = FXFA_CONFIG | FXFA_TEMPLATE | FXFA_LOCALESET | FXFA_DATASETS |
-           FXFA_XMPMETA | FXFA_XFDF | FXFA_FORM;
-  }
-  if (!m_pPDFDoc) {
-    fileStream.Flush();
-    return FALSE;
-  }
-
-  CPDF_Dictionary* pRoot = m_pPDFDoc->GetRoot();
-  if (!pRoot) {
-    fileStream.Flush();
-    return FALSE;
-  }
-
-  CPDF_Dictionary* pAcroForm = pRoot->GetDictBy("AcroForm");
-  if (!pAcroForm) {
-    fileStream.Flush();
-    return FALSE;
-  }
-
-  CPDF_Array* pArray = ToArray(pAcroForm->GetObjectBy("XFA"));
-  if (!pArray) {
-    fileStream.Flush();
-    return FALSE;
-  }
-
-  int size = pArray->GetCount();
-  for (int i = 1; i < size; i += 2) {
-    CPDF_Object* pPDFObj = pArray->GetObjectAt(i);
-    CPDF_Object* pPrePDFObj = pArray->GetObjectAt(i - 1);
-    if (!pPrePDFObj->IsString())
-      continue;
-    if (!pPDFObj->IsReference())
-      continue;
-
-    CPDF_Object* pDirectObj = pPDFObj->GetDirect();
-    if (!pDirectObj->IsStream())
-      continue;
-    if (pPrePDFObj->GetString() == "config" && !(flag & FXFA_CONFIG))
-      continue;
-    if (pPrePDFObj->GetString() == "template" && !(flag & FXFA_TEMPLATE))
-      continue;
-    if (pPrePDFObj->GetString() == "localeSet" && !(flag & FXFA_LOCALESET))
-      continue;
-    if (pPrePDFObj->GetString() == "datasets" && !(flag & FXFA_DATASETS))
-      continue;
-    if (pPrePDFObj->GetString() == "xmpmeta" && !(flag & FXFA_XMPMETA))
-      continue;
-    if (pPrePDFObj->GetString() == "xfdf" && !(flag & FXFA_XFDF))
-      continue;
-    if (pPrePDFObj->GetString() == "form" && !(flag & FXFA_FORM))
-      continue;
-    if (pPrePDFObj->GetString() == "form") {
-      m_pXFADoc->SavePackage(XFA_HASHCODE_Form, &fileStream, nullptr);
-    } else if (pPrePDFObj->GetString() == "datasets") {
-      m_pXFADoc->SavePackage(XFA_HASHCODE_Datasets, &fileStream, nullptr);
-    } else {
-      // PDF,creator.
-    }
-  }
-  return TRUE;
-}
-
 void CPDFXFA_Document::ClearChangeMark() {
   if (m_pSDKDoc)
     m_pSDKDoc->ClearChangeMark();
 }
-
-void CPDFXFA_Document::ToXFAContentFlags(CFX_WideString csSrcContent,
-                                         FPDF_DWORD& flag) {
-  if (csSrcContent.Find(L" config ", 0) != -1)
-    flag |= FXFA_CONFIG;
-  if (csSrcContent.Find(L" template ", 0) != -1)
-    flag |= FXFA_TEMPLATE;
-  if (csSrcContent.Find(L" localeSet ", 0) != -1)
-    flag |= FXFA_LOCALESET;
-  if (csSrcContent.Find(L" datasets ", 0) != -1)
-    flag |= FXFA_DATASETS;
-  if (csSrcContent.Find(L" xmpmeta ", 0) != -1)
-    flag |= FXFA_XMPMETA;
-  if (csSrcContent.Find(L" xfdf ", 0) != -1)
-    flag |= FXFA_XFDF;
-  if (csSrcContent.Find(L" form ", 0) != -1)
-    flag |= FXFA_FORM;
-  if (flag == 0) {
-    flag = FXFA_CONFIG | FXFA_TEMPLATE | FXFA_LOCALESET | FXFA_DATASETS |
-           FXFA_XMPMETA | FXFA_XFDF | FXFA_FORM;
-  }
-}
-
-FX_BOOL CPDFXFA_Document::MailToInfo(CFX_WideString& csURL,
-                                     CFX_WideString& csToAddress,
-                                     CFX_WideString& csCCAddress,
-                                     CFX_WideString& csBCCAddress,
-                                     CFX_WideString& csSubject,
-                                     CFX_WideString& csMsg) {
-  CFX_WideString srcURL = csURL;
-  srcURL.TrimLeft();
-  if (srcURL.Left(7).CompareNoCase(L"mailto:") != 0)
-    return FALSE;
-
-  int pos = srcURL.Find(L'?', 0);
-  CFX_WideString tmp;
-  if (pos == -1) {
-    pos = srcURL.Find(L'@', 0);
-    if (pos == -1)
-      return FALSE;
-
-    tmp = srcURL.Right(csURL.GetLength() - 7);
-  } else {
-    tmp = srcURL.Left(pos);
-    tmp = tmp.Right(tmp.GetLength() - 7);
-  }
-  tmp.TrimLeft();
-  tmp.TrimRight();
-
-  csToAddress = tmp;
-
-  srcURL = srcURL.Right(srcURL.GetLength() - (pos + 1));
-  while (!srcURL.IsEmpty()) {
-    srcURL.TrimLeft();
-    srcURL.TrimRight();
-    pos = srcURL.Find(L'&', 0);
-
-    tmp = (pos == -1) ? srcURL : srcURL.Left(pos);
-    tmp.TrimLeft();
-    tmp.TrimRight();
-    if (tmp.GetLength() >= 3 && tmp.Left(3).CompareNoCase(L"cc=") == 0) {
-      tmp = tmp.Right(tmp.GetLength() - 3);
-      if (!csCCAddress.IsEmpty())
-        csCCAddress += L';';
-      csCCAddress += tmp;
-    } else if (tmp.GetLength() >= 4 &&
-               tmp.Left(4).CompareNoCase(L"bcc=") == 0) {
-      tmp = tmp.Right(tmp.GetLength() - 4);
-      if (!csBCCAddress.IsEmpty())
-        csBCCAddress += L';';
-      csBCCAddress += tmp;
-    } else if (tmp.GetLength() >= 8 &&
-               tmp.Left(8).CompareNoCase(L"subject=") == 0) {
-      tmp = tmp.Right(tmp.GetLength() - 8);
-      csSubject += tmp;
-    } else if (tmp.GetLength() >= 5 &&
-               tmp.Left(5).CompareNoCase(L"body=") == 0) {
-      tmp = tmp.Right(tmp.GetLength() - 5);
-      csMsg += tmp;
-    }
-    srcURL = (pos == -1) ? L"" : srcURL.Right(csURL.GetLength() - (pos + 1));
-  }
-  csToAddress.Replace(L",", L";");
-  csCCAddress.Replace(L",", L";");
-  csBCCAddress.Replace(L",", L";");
-  return TRUE;
-}
-
-FX_BOOL CPDFXFA_Document::SubmitDataInternal(CXFA_FFDoc* hDoc,
-                                             CXFA_Submit submit) {
-  CPDFDoc_Environment* pEnv = m_pSDKDoc->GetEnv();
-  if (!pEnv)
-    return FALSE;
-
-  CFX_WideStringC csURLC;
-  submit.GetSubmitTarget(csURLC);
-  CFX_WideString csURL(csURLC);
-  if (csURL.IsEmpty()) {
-    CFX_WideString ws;
-    ws.FromLocal("Submit cancelled.");
-    CFX_ByteString bs = ws.UTF16LE_Encode();
-    int len = bs.GetLength();
-    pEnv->FFI_Alert((FPDF_WIDESTRING)bs.GetBuffer(len), (FPDF_WIDESTRING)L"", 0,
-                    4);
-    bs.ReleaseBuffer(len);
-    return FALSE;
-  }
-
-  FPDF_BOOL bRet = TRUE;
-  FPDF_FILEHANDLER* pFileHandler = nullptr;
-  int fileFlag = -1;
-  switch (submit.GetSubmitFormat()) {
-    case XFA_ATTRIBUTEENUM_Xdp: {
-      CFX_WideStringC csContentC;
-      submit.GetSubmitXDPContent(csContentC);
-      CFX_WideString csContent;
-      csContent = csContentC;
-      csContent.TrimLeft();
-      csContent.TrimRight();
-      CFX_WideString space;
-      space.FromLocal(" ");
-      csContent = space + csContent + space;
-      FPDF_DWORD flag = 0;
-      if (submit.IsSubmitEmbedPDF())
-        flag |= FXFA_PDF;
-
-      ToXFAContentFlags(csContent, flag);
-      pFileHandler = pEnv->FFI_OpenFile(FXFA_SAVEAS_XDP, nullptr, "wb");
-      fileFlag = FXFA_SAVEAS_XDP;
-      ExportSubmitFile(pFileHandler, FXFA_SAVEAS_XDP, 0, flag);
-      break;
-    }
-    case XFA_ATTRIBUTEENUM_Xml:
-      pFileHandler = pEnv->FFI_OpenFile(FXFA_SAVEAS_XML, nullptr, "wb");
-      fileFlag = FXFA_SAVEAS_XML;
-      ExportSubmitFile(pFileHandler, FXFA_SAVEAS_XML, 0, FXFA_XFA_ALL);
-      break;
-    case XFA_ATTRIBUTEENUM_Pdf:
-      break;
-    case XFA_ATTRIBUTEENUM_Urlencoded:
-      pFileHandler = pEnv->FFI_OpenFile(FXFA_SAVEAS_XML, nullptr, "wb");
-      fileFlag = FXFA_SAVEAS_XML;
-      ExportSubmitFile(pFileHandler, FXFA_SAVEAS_XML, 0, FXFA_XFA_ALL);
-      break;
-    default:
-      return false;
-  }
-  if (!pFileHandler)
-    return FALSE;
-  if (csURL.Left(7).CompareNoCase(L"mailto:") == 0) {
-    CFX_WideString csToAddress;
-    CFX_WideString csCCAddress;
-    CFX_WideString csBCCAddress;
-    CFX_WideString csSubject;
-    CFX_WideString csMsg;
-    bRet = MailToInfo(csURL, csToAddress, csCCAddress, csBCCAddress, csSubject,
-                      csMsg);
-    if (!bRet)
-      return FALSE;
-
-    CFX_ByteString bsTo = CFX_WideString(csToAddress).UTF16LE_Encode();
-    CFX_ByteString bsCC = CFX_WideString(csCCAddress).UTF16LE_Encode();
-    CFX_ByteString bsBcc = CFX_WideString(csBCCAddress).UTF16LE_Encode();
-    CFX_ByteString bsSubject = CFX_WideString(csSubject).UTF16LE_Encode();
-    CFX_ByteString bsMsg = CFX_WideString(csMsg).UTF16LE_Encode();
-    FPDF_WIDESTRING pTo = (FPDF_WIDESTRING)bsTo.GetBuffer(bsTo.GetLength());
-    FPDF_WIDESTRING pCC = (FPDF_WIDESTRING)bsCC.GetBuffer(bsCC.GetLength());
-    FPDF_WIDESTRING pBcc = (FPDF_WIDESTRING)bsBcc.GetBuffer(bsBcc.GetLength());
-    FPDF_WIDESTRING pSubject =
-        (FPDF_WIDESTRING)bsSubject.GetBuffer(bsSubject.GetLength());
-    FPDF_WIDESTRING pMsg = (FPDF_WIDESTRING)bsMsg.GetBuffer(bsMsg.GetLength());
-    pEnv->FFI_EmailTo(pFileHandler, pTo, pSubject, pCC, pBcc, pMsg);
-    bsTo.ReleaseBuffer();
-    bsCC.ReleaseBuffer();
-    bsBcc.ReleaseBuffer();
-    bsSubject.ReleaseBuffer();
-    bsMsg.ReleaseBuffer();
-  } else {
-    // HTTP or FTP
-    CFX_WideString ws;
-    CFX_ByteString bs = csURL.UTF16LE_Encode();
-    int len = bs.GetLength();
-    pEnv->FFI_UploadTo(pFileHandler, fileFlag,
-                       (FPDF_WIDESTRING)bs.GetBuffer(len));
-    bs.ReleaseBuffer(len);
-  }
-  return bRet;
-}
-
-FX_BOOL CPDFXFA_Document::SetGlobalProperty(CXFA_FFDoc* hDoc,
-                                            const CFX_ByteStringC& szPropName,
-                                            CFXJSE_Value* pValue) {
-  if (hDoc != m_pXFADoc.get())
-    return FALSE;
-
-  if (m_pSDKDoc && m_pSDKDoc->GetEnv()->GetJSRuntime())
-    return m_pSDKDoc->GetEnv()->GetJSRuntime()->SetValueByName(szPropName,
-                                                               pValue);
-  return FALSE;
-}
-
-FX_BOOL CPDFXFA_Document::GetGlobalProperty(CXFA_FFDoc* hDoc,
-                                            const CFX_ByteStringC& szPropName,
-                                            CFXJSE_Value* pValue) {
-  if (hDoc != m_pXFADoc.get())
-    return FALSE;
-  if (!m_pSDKDoc || !m_pSDKDoc->GetEnv()->GetJSRuntime())
-    return FALSE;
-
-  if (!m_pJSContext) {
-    m_pSDKDoc->GetEnv()->GetJSRuntime()->SetReaderDocument(m_pSDKDoc.get());
-    m_pJSContext = m_pSDKDoc->GetEnv()->GetJSRuntime()->NewContext();
-  }
-
-  return m_pSDKDoc->GetEnv()->GetJSRuntime()->GetValueByName(szPropName,
-                                                             pValue);
-}
diff --git a/fpdfsdk/fpdfxfa/include/cpdfxfa_docenvironment.h b/fpdfsdk/fpdfxfa/include/cpdfxfa_docenvironment.h
new file mode 100644
index 0000000000..f6a538f816
--- /dev/null
+++ b/fpdfsdk/fpdfxfa/include/cpdfxfa_docenvironment.h
@@ -0,0 +1,114 @@
+// Copyright 2016 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_INCLUDE_CPDFXFA_DOCENVIRONMENT_H_
+#define FPDFSDK_FPDFXFA_INCLUDE_CPDFXFA_DOCENVIRONMENT_H_
+
+#include "public/fpdfview.h"
+#include "xfa/fxfa/include/fxfa.h"
+
+class CPDFXFA_Document;
+class IJS_Context;
+
+class CPDFXFA_DocEnvironment : public IXFA_DocEnvironment {
+ public:
+  CPDFXFA_DocEnvironment(CPDFXFA_Document*);
+  ~CPDFXFA_DocEnvironment() override;
+
+  // IXFA_DocEnvironment
+  void SetChangeMark(CXFA_FFDoc* hDoc) override;
+  // used in dynamic xfa, dwFlags refer to XFA_INVALIDATE_XXX macros.
+  void InvalidateRect(CXFA_FFPageView* pPageView,
+                      const CFX_RectF& rt,
+                      uint32_t dwFlags) override;
+  // show or hide caret
+  void DisplayCaret(CXFA_FFWidget* hWidget,
+                    FX_BOOL bVisible,
+                    const CFX_RectF* pRtAnchor) override;
+  // dwPos: (0:bottom 1:top)
+  FX_BOOL GetPopupPos(CXFA_FFWidget* hWidget,
+                      FX_FLOAT fMinPopup,
+                      FX_FLOAT fMaxPopup,
+                      const CFX_RectF& rtAnchor,
+                      CFX_RectF& rtPopup) override;
+  FX_BOOL PopupMenu(CXFA_FFWidget* hWidget, CFX_PointF ptPopup) override;
+
+  // dwFlags XFA_PAGEVIEWEVENT_Added, XFA_PAGEVIEWEVENT_Removing
+  void PageViewEvent(CXFA_FFPageView* pPageView, uint32_t dwFlags) override;
+  void WidgetPostAdd(CXFA_FFWidget* hWidget,
+                     CXFA_WidgetAcc* pWidgetData) override;
+  void WidgetPreRemove(CXFA_FFWidget* hWidget,
+                       CXFA_WidgetAcc* pWidgetData) override;
+
+  // Host method
+  int32_t CountPages(CXFA_FFDoc* hDoc) override;
+  int32_t GetCurrentPage(CXFA_FFDoc* hDoc) override;
+  void SetCurrentPage(CXFA_FFDoc* hDoc, int32_t iCurPage) override;
+  FX_BOOL IsCalculationsEnabled(CXFA_FFDoc* hDoc) override;
+  void SetCalculationsEnabled(CXFA_FFDoc* hDoc, FX_BOOL bEnabled) override;
+  void GetTitle(CXFA_FFDoc* hDoc, CFX_WideString& wsTitle) override;
+  void SetTitle(CXFA_FFDoc* hDoc, const CFX_WideString& wsTitle) override;
+  void ExportData(CXFA_FFDoc* hDoc,
+                  const CFX_WideString& wsFilePath,
+                  FX_BOOL bXDP) override;
+  void GotoURL(CXFA_FFDoc* hDoc,
+               const CFX_WideString& bsURL,
+               FX_BOOL bAppend) override;
+  FX_BOOL IsValidationsEnabled(CXFA_FFDoc* hDoc) override;
+  void SetValidationsEnabled(CXFA_FFDoc* hDoc, FX_BOOL bEnabled) override;
+  void SetFocusWidget(CXFA_FFDoc* hDoc, CXFA_FFWidget* hWidget) override;
+  void Print(CXFA_FFDoc* hDoc,
+             int32_t nStartPage,
+             int32_t nEndPage,
+             uint32_t dwOptions) override;
+  FX_ARGB GetHighlightColor(CXFA_FFDoc* hDoc) override;
+
+  /**
+   *Submit data to email, http, ftp.
+   * @param[in] hDoc The document handler.
+   * @param[in] eFormat Determines the format in which the data will be
+   *submitted. XFA_ATTRIBUTEENUM_Xdp, XFA_ATTRIBUTEENUM_Xml...
+   * @param[in] wsTarget The URL to which the data will be submitted.
+   * @param[in] eEncoding The encoding of text content.
+   * @param[in] pXDPContent Controls what subset of the data is submitted, used
+   *only when the format property is xdp.
+   * @param[in] bEmbedPDF, specifies whether PDF is embedded in the submitted
+   *content or not.
+   */
+  FX_BOOL SubmitData(CXFA_FFDoc* hDoc, CXFA_Submit submit) override;
+
+  FX_BOOL GetGlobalProperty(CXFA_FFDoc* hDoc,
+                            const CFX_ByteStringC& szPropName,
+                            CFXJSE_Value* pValue) override;
+  FX_BOOL SetGlobalProperty(CXFA_FFDoc* hDoc,
+                            const CFX_ByteStringC& szPropName,
+                            CFXJSE_Value* pValue) override;
+
+  IFX_FileRead* OpenLinkedFile(CXFA_FFDoc* hDoc,
+                               const CFX_WideString& wsLink) override;
+
+ private:
+  FX_BOOL OnBeforeNotifySubmit();
+  void OnAfterNotifySubmit();
+  FX_BOOL NotifySubmit(FX_BOOL bPrevOrPost);
+  FX_BOOL SubmitDataInternal(CXFA_FFDoc* hDoc, CXFA_Submit submit);
+  FX_BOOL MailToInfo(CFX_WideString& csURL,
+                     CFX_WideString& csToAddress,
+                     CFX_WideString& csCCAddress,
+                     CFX_WideString& csBCCAddress,
+                     CFX_WideString& csSubject,
+                     CFX_WideString& csMsg);
+  FX_BOOL ExportSubmitFile(FPDF_FILEHANDLER* ppFileHandler,
+                           int fileType,
+                           FPDF_DWORD encodeType,
+                           FPDF_DWORD flag);
+  void ToXFAContentFlags(CFX_WideString csSrcContent, FPDF_DWORD& flag);
+
+  CPDFXFA_Document* const m_pDocument;  // Not owned;
+  IJS_Context* m_pJSContext;
+};
+
+#endif  // FPDFSDK_FPDFXFA_INCLUDE_CPDFXFA_DOCENVIRONMENT_H_
diff --git a/fpdfsdk/fpdfxfa/include/fpdfxfa_doc.h b/fpdfsdk/fpdfxfa/include/fpdfxfa_doc.h
index 31f3706b72..acced2c434 100644
--- a/fpdfsdk/fpdfxfa/include/fpdfxfa_doc.h
+++ b/fpdfsdk/fpdfxfa/include/fpdfxfa_doc.h
@@ -7,29 +7,30 @@
 #ifndef FPDFSDK_FPDFXFA_INCLUDE_FPDFXFA_DOC_H_
 #define FPDFSDK_FPDFXFA_INCLUDE_FPDFXFA_DOC_H_
 
-#include "xfa/fxfa/include/xfa_ffdoc.h"
-
 #include <memory>
-#include <vector>
 
-#include "public/fpdfview.h"
-#include "xfa/fxfa/include/fxfa.h"
-#include "xfa/fxfa/include/xfa_ffdochandler.h"
+#include "fpdfsdk/fpdfxfa/include/cpdfxfa_docenvironment.h"
+#include "xfa/fxfa/include/xfa_ffdoc.h"
 
 class CPDFXFA_App;
-class CPDFXFA_Document;
 class CPDFXFA_Page;
 class CPDFSDK_Document;
 class CPDFDoc_Environment;
-class IJS_Runtime;
-class IJS_Context;
 class CXFA_FFDocHandler;
 
-class CPDFXFA_Document : public IXFA_DocProvider {
+enum LoadStatus {
+  FXFA_LOADSTATUS_PRELOAD = 0,
+  FXFA_LOADSTATUS_LOADING,
+  FXFA_LOADSTATUS_LOADED,
+  FXFA_LOADSTATUS_CLOSING,
+  FXFA_LOADSTATUS_CLOSED
+};
+
+class CPDFXFA_Document {
  public:
   CPDFXFA_Document(std::unique_ptr<CPDF_Document> pPDFDoc,
                    CPDFXFA_App* pProvider);
-  ~CPDFXFA_Document() override;
+  ~CPDFXFA_Document();
 
   FX_BOOL LoadXFADoc();
   CPDF_Document* GetPDFDoc() { return m_pPDFDoc.get(); }
@@ -38,6 +39,7 @@ class CPDFXFA_Document : public IXFA_DocProvider {
 
   int GetPageCount();
   CPDFXFA_Page* GetPage(int page_index);
+  CPDFXFA_Page* GetPage(CXFA_FFPageView* pPage);
 
   void DeletePage(int page_index);
   void RemovePage(CPDFXFA_Page* page);
@@ -45,89 +47,23 @@ class CPDFXFA_Document : public IXFA_DocProvider {
 
   CPDFSDK_Document* GetSDKDocument(CPDFDoc_Environment* pFormFillEnv);
 
-  // IXFA_DocProvider
-  void SetChangeMark(CXFA_FFDoc* hDoc) override;
-  // used in dynamic xfa, dwFlags refer to XFA_INVALIDATE_XXX macros.
-  void InvalidateRect(CXFA_FFPageView* pPageView,
-                      const CFX_RectF& rt,
-                      uint32_t dwFlags) override;
-  // show or hide caret
-  void DisplayCaret(CXFA_FFWidget* hWidget,
-                    FX_BOOL bVisible,
-                    const CFX_RectF* pRtAnchor) override;
-  // dwPos: (0:bottom 1:top)
-  FX_BOOL GetPopupPos(CXFA_FFWidget* hWidget,
-                      FX_FLOAT fMinPopup,
-                      FX_FLOAT fMaxPopup,
-                      const CFX_RectF& rtAnchor,
-                      CFX_RectF& rtPopup) override;
-  FX_BOOL PopupMenu(CXFA_FFWidget* hWidget, CFX_PointF ptPopup) override;
-
-  // dwFlags XFA_PAGEVIEWEVENT_Added, XFA_PAGEVIEWEVENT_Removing
-  void PageViewEvent(CXFA_FFPageView* pPageView, uint32_t dwFlags) override;
-  void WidgetPostAdd(CXFA_FFWidget* hWidget,
-                     CXFA_WidgetAcc* pWidgetData) override;
-  void WidgetPreRemove(CXFA_FFWidget* hWidget,
-                       CXFA_WidgetAcc* pWidgetData) override;
-
-  // Host method
-  int32_t CountPages(CXFA_FFDoc* hDoc) override;
-  int32_t GetCurrentPage(CXFA_FFDoc* hDoc) override;
-  void SetCurrentPage(CXFA_FFDoc* hDoc, int32_t iCurPage) override;
-  FX_BOOL IsCalculationsEnabled(CXFA_FFDoc* hDoc) override;
-  void SetCalculationsEnabled(CXFA_FFDoc* hDoc, FX_BOOL bEnabled) override;
-  void GetTitle(CXFA_FFDoc* hDoc, CFX_WideString& wsTitle) override;
-  void SetTitle(CXFA_FFDoc* hDoc, const CFX_WideString& wsTitle) override;
-  void ExportData(CXFA_FFDoc* hDoc,
-                  const CFX_WideString& wsFilePath,
-                  FX_BOOL bXDP) override;
-  void GotoURL(CXFA_FFDoc* hDoc,
-               const CFX_WideString& bsURL,
-               FX_BOOL bAppend) override;
-  FX_BOOL IsValidationsEnabled(CXFA_FFDoc* hDoc) override;
-  void SetValidationsEnabled(CXFA_FFDoc* hDoc, FX_BOOL bEnabled) override;
-  void SetFocusWidget(CXFA_FFDoc* hDoc, CXFA_FFWidget* hWidget) override;
-  void Print(CXFA_FFDoc* hDoc,
-             int32_t nStartPage,
-             int32_t nEndPage,
-             uint32_t dwOptions) override;
-  FX_ARGB GetHighlightColor(CXFA_FFDoc* hDoc) override;
-
-  /**
-   *Submit data to email, http, ftp.
-   * @param[in] hDoc The document handler.
-   * @param[in] eFormat Determines the format in which the data will be
-   *submitted. XFA_ATTRIBUTEENUM_Xdp, XFA_ATTRIBUTEENUM_Xml...
-   * @param[in] wsTarget The URL to which the data will be submitted.
-   * @param[in] eEncoding The encoding of text content.
-   * @param[in] pXDPContent Controls what subset of the data is submitted, used
-   *only when the format property is xdp.
-   * @param[in] bEmbedPDF, specifies whether PDF is embedded in the submitted
-   *content or not.
-   */
-  FX_BOOL SubmitData(CXFA_FFDoc* hDoc, CXFA_Submit submit) override;
-
-  FX_BOOL GetGlobalProperty(CXFA_FFDoc* hDoc,
-                            const CFX_ByteStringC& szPropName,
-                            CFXJSE_Value* pValue) override;
-  FX_BOOL SetGlobalProperty(CXFA_FFDoc* hDoc,
-                            const CFX_ByteStringC& szPropName,
-                            CFXJSE_Value* pValue) override;
-
-  IFX_FileRead* OpenLinkedFile(CXFA_FFDoc* hDoc,
-                               const CFX_WideString& wsLink) override;
-
   void ClearChangeMark();
 
- private:
-  enum LoadStatus {
-    FXFA_LOADSTATUS_PRELOAD = 0,
-    FXFA_LOADSTATUS_LOADING,
-    FXFA_LOADSTATUS_LOADED,
-    FXFA_LOADSTATUS_CLOSING,
-    FXFA_LOADSTATUS_CLOSED
-  };
+ protected:
+  friend class CPDFXFA_DocEnvironment;
+
+  CPDFSDK_Document* GetSDKDoc() { return m_pSDKDoc.get(); }
+  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(CXFA_FFDocHandler* pDoc) {
     if (pDoc) {
       m_pXFADoc->CloseDoc();
@@ -136,36 +72,21 @@ class CPDFXFA_Document : public IXFA_DocProvider {
     }
   }
 
-  CPDFXFA_Page* GetPage(CXFA_FFPageView* pPage);
-  FX_BOOL OnBeforeNotifySubmit();
-  void OnAfterNotifySubmit();
-  FX_BOOL NotifySubmit(FX_BOOL bPrevOrPost);
-  FX_BOOL SubmitDataInternal(CXFA_FFDoc* hDoc, CXFA_Submit submit);
-  FX_BOOL MailToInfo(CFX_WideString& csURL,
-                     CFX_WideString& csToAddress,
-                     CFX_WideString& csCCAddress,
-                     CFX_WideString& csBCCAddress,
-                     CFX_WideString& csSubject,
-                     CFX_WideString& csMsg);
-  FX_BOOL ExportSubmitFile(FPDF_FILEHANDLER* ppFileHandler,
-                           int fileType,
-                           FPDF_DWORD encodeType,
-                           FPDF_DWORD flag);
-  void ToXFAContentFlags(CFX_WideString csSrcContent, FPDF_DWORD& flag);
-
   int m_iDocType;
 
-  // |m_pSDKDoc| has to be released before |m_pPDFDoc| since it needs to access
-  // it to kill focused annotations.
   std::unique_ptr<CPDF_Document> m_pPDFDoc;
+  // |m_pSDKDoc| must be destroyed before |m_pPDFDoc| since it needs to access
+  // it to kill focused annotations.
   std::unique_ptr<CPDFSDK_Document> m_pSDKDoc;
   std::unique_ptr<CXFA_FFDoc> m_pXFADoc;
   CXFA_FFDocView* m_pXFADocView;  // not owned.
   CPDFXFA_App* const m_pApp;
-  IJS_Context* m_pJSContext;
   CFX_ArrayTemplate<CPDFXFA_Page*> m_XFAPageList;
   LoadStatus m_nLoadStatus;
   int m_nPageCount;
+
+  // Must be destroy before |m_pSDKDoc|.
+  CPDFXFA_DocEnvironment m_DocEnv;
 };
 
 #endif  // FPDFSDK_FPDFXFA_INCLUDE_FPDFXFA_DOC_H_