Move fpdfsdk/src up to fpdfsdk/.

This CL moves the files in fpdfsdk/src/ up one level to fpdfsdk/ and fixes
up the include paths, include guards and build files.

R=tsepez@chromium.org

Review URL: https://codereview.chromium.org/1799773002 .

1 files changed, 732 insertions, 0 deletions

diff --git a/fpdfsdk/fpdfformfill.cpp b/fpdfsdk/fpdfformfill.cpp
new file mode 100644
index 0000000000..31f5732ce5
--- /dev/null
+++ b/fpdfsdk/fpdfformfill.cpp
@@ -0,0 +1,732 @@
+// 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 "public/fpdf_formfill.h"
+
+#include <memory>
+#include <vector>
+
+#include "core/include/fpdfapi/cpdf_document.h"
+#include "fpdfsdk/include/fsdk_define.h"
+#include "fpdfsdk/include/fsdk_mgr.h"
+#include "public/fpdfview.h"
+#include "third_party/base/stl_util.h"
+
+#ifdef PDF_ENABLE_XFA
+#include "fpdfsdk/include/fpdfxfa/fpdfxfa_app.h"
+#include "fpdfsdk/include/fpdfxfa/fpdfxfa_doc.h"
+#include "fpdfsdk/include/fpdfxfa/fpdfxfa_page.h"
+#endif  // PDF_ENABLE_XFA
+
+namespace {
+
+CPDFSDK_InterForm* FormHandleToInterForm(FPDF_FORMHANDLE hHandle) {
+  CPDFSDK_Document* pSDKDoc = CPDFSDK_Document::FromFPDFFormHandle(hHandle);
+  return pSDKDoc ? pSDKDoc->GetInterForm() : nullptr;
+}
+
+CPDFSDK_PageView* FormHandleToPageView(FPDF_FORMHANDLE hHandle,
+                                       FPDF_PAGE page) {
+  UnderlyingPageType* pPage = UnderlyingFromFPDFPage(page);
+  if (!pPage)
+    return nullptr;
+
+  CPDFSDK_Document* pSDKDoc = CPDFSDK_Document::FromFPDFFormHandle(hHandle);
+  return pSDKDoc ? pSDKDoc->GetPageView(pPage, TRUE) : nullptr;
+}
+
+#ifdef PDF_ENABLE_XFA
+std::vector<CFX_ByteString>* FromFPDFStringHandle(FPDF_STRINGHANDLE handle) {
+  return reinterpret_cast<std::vector<CFX_ByteString>*>(handle);
+}
+
+FPDF_STRINGHANDLE ToFPDFStringHandle(std::vector<CFX_ByteString>* strings) {
+  return reinterpret_cast<FPDF_STRINGHANDLE>(strings);
+}
+#endif  // PDF_ENABLE_XFA
+
+}  // namespace
+
+DLLEXPORT int STDCALL FPDFPage_HasFormFieldAtPoint(FPDF_FORMHANDLE hHandle,
+                                                   FPDF_PAGE page,
+                                                   double page_x,
+                                                   double page_y) {
+  if (!hHandle)
+    return -1;
+  CPDF_Page* pPage = CPDFPageFromFPDFPage(page);
+  if (pPage) {
+    CPDF_InterForm interform(pPage->m_pDocument, FALSE);
+    CPDF_FormControl* pFormCtrl =
+        interform.GetControlAtPoint(pPage, static_cast<FX_FLOAT>(page_x),
+                                    static_cast<FX_FLOAT>(page_y), nullptr);
+    if (!pFormCtrl)
+      return -1;
+    CPDF_FormField* pFormField = pFormCtrl->GetField();
+    return pFormField ? pFormField->GetFieldType() : -1;
+  }
+
+#ifdef PDF_ENABLE_XFA
+  CPDFXFA_Page* pXFAPage = UnderlyingFromFPDFPage(page);
+  if (!pXFAPage)
+    return -1;
+
+  IXFA_PageView* pPageView = pXFAPage->GetXFAPageView();
+  if (!pPageView)
+    return -1;
+
+  IXFA_DocView* pDocView = pPageView->GetDocView();
+  if (!pDocView)
+    return -1;
+
+  IXFA_WidgetHandler* pWidgetHandler = pDocView->GetWidgetHandler();
+  if (!pWidgetHandler)
+    return -1;
+
+  std::unique_ptr<IXFA_WidgetIterator, ReleaseDeleter<IXFA_WidgetIterator>>
+      pWidgetIterator(pPageView->CreateWidgetIterator(
+          XFA_TRAVERSEWAY_Form,
+          XFA_WIDGETFILTER_Viewable | XFA_WIDGETFILTER_AllType));
+  if (!pWidgetIterator)
+    return -1;
+
+  IXFA_Widget* pXFAAnnot = pWidgetIterator->MoveToNext();
+  while (pXFAAnnot) {
+    CFX_RectF rcBBox;
+    pWidgetHandler->GetBBox(pXFAAnnot, rcBBox, 0);
+    CFX_FloatRect rcWidget(rcBBox.left, rcBBox.top, rcBBox.left + rcBBox.width,
+                           rcBBox.top + rcBBox.height);
+    rcWidget.left -= 1.0f;
+    rcWidget.right += 1.0f;
+    rcWidget.bottom -= 1.0f;
+    rcWidget.top += 1.0f;
+
+    if (rcWidget.Contains(static_cast<FX_FLOAT>(page_x),
+                          static_cast<FX_FLOAT>(page_y))) {
+      return FPDF_FORMFIELD_XFA;
+    }
+    pXFAAnnot = pWidgetIterator->MoveToNext();
+  }
+#endif  // PDF_ENABLE_XFA
+  return -1;
+}
+
+DLLEXPORT int STDCALL FPDPage_HasFormFieldAtPoint(FPDF_FORMHANDLE hHandle,
+                                                  FPDF_PAGE page,
+                                                  double page_x,
+                                                  double page_y) {
+  return FPDFPage_HasFormFieldAtPoint(hHandle, page, page_x, page_y);
+}
+
+DLLEXPORT int STDCALL FPDFPage_FormFieldZOrderAtPoint(FPDF_FORMHANDLE hHandle,
+                                                      FPDF_PAGE page,
+                                                      double page_x,
+                                                      double page_y) {
+  if (!hHandle)
+    return -1;
+  CPDF_Page* pPage = CPDFPageFromFPDFPage(page);
+  if (!pPage)
+    return -1;
+  CPDF_InterForm interform(pPage->m_pDocument, FALSE);
+  int z_order = -1;
+  (void)interform.GetControlAtPoint(pPage, (FX_FLOAT)page_x, (FX_FLOAT)page_y,
+                                    &z_order);
+  return z_order;
+}
+
+DLLEXPORT FPDF_FORMHANDLE STDCALL
+FPDFDOC_InitFormFillEnvironment(FPDF_DOCUMENT document,
+                                FPDF_FORMFILLINFO* formInfo) {
+#ifdef PDF_ENABLE_XFA
+  const int kRequiredVersion = 2;
+#else   // PDF_ENABLE_XFA
+  const int kRequiredVersion = 1;
+#endif  // PDF_ENABLE_XFA
+  if (!formInfo || formInfo->version != kRequiredVersion)
+    return nullptr;
+
+  UnderlyingDocumentType* pDocument = UnderlyingFromFPDFDocument(document);
+  if (!pDocument)
+    return nullptr;
+
+  CPDFDoc_Environment* pEnv = new CPDFDoc_Environment(pDocument, formInfo);
+#ifdef PDF_ENABLE_XFA
+  pEnv->SetSDKDocument(pDocument->GetSDKDocument(pEnv));
+  CPDFXFA_App* pApp = CPDFXFA_App::GetInstance();
+  pApp->AddFormFillEnv(pEnv);
+#else  // PDF_ENABLE_XFA
+  pEnv->SetSDKDocument(new CPDFSDK_Document(pDocument, pEnv));
+#endif  // PDF_ENABLE_XFA
+  return pEnv;
+}
+
+DLLEXPORT void STDCALL
+FPDFDOC_ExitFormFillEnvironment(FPDF_FORMHANDLE hHandle) {
+  if (!hHandle)
+    return;
+  CPDFDoc_Environment* pEnv = (CPDFDoc_Environment*)hHandle;
+#ifdef PDF_ENABLE_XFA
+  CPDFXFA_App* pApp = CPDFXFA_App::GetInstance();
+  pApp->RemoveFormFillEnv(pEnv);
+#else   // PDF_ENABLE_XFA
+  if (CPDFSDK_Document* pSDKDoc = pEnv->GetSDKDocument()) {
+    pEnv->SetSDKDocument(NULL);
+    delete pSDKDoc;
+  }
+#endif  // PDF_ENABLE_XFA
+  delete pEnv;
+}
+
+DLLEXPORT FPDF_BOOL STDCALL FORM_OnMouseMove(FPDF_FORMHANDLE hHandle,
+                                             FPDF_PAGE page,
+                                             int modifier,
+                                             double page_x,
+                                             double page_y) {
+  CPDFSDK_PageView* pPageView = FormHandleToPageView(hHandle, page);
+  if (!pPageView)
+    return FALSE;
+
+  CFX_FloatPoint pt((FX_FLOAT)page_x, (FX_FLOAT)page_y);
+  return pPageView->OnMouseMove(pt, modifier);
+}
+
+DLLEXPORT FPDF_BOOL STDCALL FORM_OnLButtonDown(FPDF_FORMHANDLE hHandle,
+                                               FPDF_PAGE page,
+                                               int modifier,
+                                               double page_x,
+                                               double page_y) {
+  CPDFSDK_PageView* pPageView = FormHandleToPageView(hHandle, page);
+  if (!pPageView)
+    return FALSE;
+
+  CFX_FloatPoint pt((FX_FLOAT)page_x, (FX_FLOAT)page_y);
+  return pPageView->OnLButtonDown(pt, modifier);
+}
+
+DLLEXPORT FPDF_BOOL STDCALL FORM_OnLButtonUp(FPDF_FORMHANDLE hHandle,
+                                             FPDF_PAGE page,
+                                             int modifier,
+                                             double page_x,
+                                             double page_y) {
+  CPDFSDK_PageView* pPageView = FormHandleToPageView(hHandle, page);
+  if (!pPageView)
+    return FALSE;
+
+  CFX_FloatPoint pt((FX_FLOAT)page_x, (FX_FLOAT)page_y);
+  return pPageView->OnLButtonUp(pt, modifier);
+}
+
+#ifdef PDF_ENABLE_XFA
+DLLEXPORT FPDF_BOOL STDCALL FORM_OnRButtonDown(FPDF_FORMHANDLE hHandle,
+                                               FPDF_PAGE page,
+                                               int modifier,
+                                               double page_x,
+                                               double page_y) {
+  CPDFSDK_PageView* pPageView = FormHandleToPageView(hHandle, page);
+  if (!pPageView)
+    return FALSE;
+
+  CFX_FloatPoint pt((FX_FLOAT)page_x, (FX_FLOAT)page_y);
+  return pPageView->OnRButtonDown(pt, modifier);
+}
+
+DLLEXPORT FPDF_BOOL STDCALL FORM_OnRButtonUp(FPDF_FORMHANDLE hHandle,
+                                             FPDF_PAGE page,
+                                             int modifier,
+                                             double page_x,
+                                             double page_y) {
+  CPDFSDK_PageView* pPageView = FormHandleToPageView(hHandle, page);
+  if (!pPageView)
+    return FALSE;
+
+  CFX_FloatPoint pt((FX_FLOAT)page_x, (FX_FLOAT)page_y);
+  return pPageView->OnRButtonUp(pt, modifier);
+}
+#endif  // PDF_ENABLE_XFA
+
+DLLEXPORT FPDF_BOOL STDCALL FORM_OnKeyDown(FPDF_FORMHANDLE hHandle,
+                                           FPDF_PAGE page,
+                                           int nKeyCode,
+                                           int modifier) {
+  CPDFSDK_PageView* pPageView = FormHandleToPageView(hHandle, page);
+  if (!pPageView)
+    return FALSE;
+
+  return pPageView->OnKeyDown(nKeyCode, modifier);
+}
+
+DLLEXPORT FPDF_BOOL STDCALL FORM_OnKeyUp(FPDF_FORMHANDLE hHandle,
+                                         FPDF_PAGE page,
+                                         int nKeyCode,
+                                         int modifier) {
+  CPDFSDK_PageView* pPageView = FormHandleToPageView(hHandle, page);
+  if (!pPageView)
+    return FALSE;
+
+  return pPageView->OnKeyUp(nKeyCode, modifier);
+}
+
+DLLEXPORT FPDF_BOOL STDCALL FORM_OnChar(FPDF_FORMHANDLE hHandle,
+                                        FPDF_PAGE page,
+                                        int nChar,
+                                        int modifier) {
+  CPDFSDK_PageView* pPageView = FormHandleToPageView(hHandle, page);
+  if (!pPageView)
+    return FALSE;
+
+  return pPageView->OnChar(nChar, modifier);
+}
+
+DLLEXPORT FPDF_BOOL STDCALL FORM_ForceToKillFocus(FPDF_FORMHANDLE hHandle) {
+  CPDFSDK_Document* pSDKDoc = CPDFSDK_Document::FromFPDFFormHandle(hHandle);
+  if (!pSDKDoc)
+    return FALSE;
+
+  return pSDKDoc->KillFocusAnnot(0);
+}
+
+DLLEXPORT void STDCALL FPDF_FFLDraw(FPDF_FORMHANDLE hHandle,
+                                    FPDF_BITMAP bitmap,
+                                    FPDF_PAGE page,
+                                    int start_x,
+                                    int start_y,
+                                    int size_x,
+                                    int size_y,
+                                    int rotate,
+                                    int flags) {
+  if (!hHandle)
+    return;
+
+  UnderlyingPageType* pPage = UnderlyingFromFPDFPage(page);
+  if (!pPage)
+    return;
+
+#ifndef PDF_ENABLE_XFA
+  CPDF_RenderOptions options;
+  if (flags & FPDF_LCD_TEXT)
+    options.m_Flags |= RENDER_CLEARTYPE;
+  else
+    options.m_Flags &= ~RENDER_CLEARTYPE;
+  // Grayscale output
+  if (flags & FPDF_GRAYSCALE) {
+    options.m_ColorMode = RENDER_COLOR_GRAY;
+    options.m_ForeColor = 0;
+    options.m_BackColor = 0xffffff;
+  }
+  options.m_AddFlags = flags >> 8;
+  options.m_pOCContext = new CPDF_OCContext(pPage->m_pDocument);
+#else   // PDF_ENABLE_XFA
+  CPDFXFA_Document* pDocument = pPage->GetDocument();
+  if (!pDocument)
+    return;
+  CPDF_Document* pPDFDoc = pDocument->GetPDFDoc();
+  if (!pPDFDoc)
+    return;
+  CPDFDoc_Environment* pEnv = (CPDFDoc_Environment*)hHandle;
+  CPDFSDK_Document* pFXDoc = pEnv->GetSDKDocument();
+  if (!pFXDoc)
+    return;
+#endif  // PDF_ENABLE_XFA
+
+  CFX_Matrix matrix;
+  pPage->GetDisplayMatrix(matrix, start_x, start_y, size_x, size_y, rotate);
+
+  FX_RECT clip(start_x, start_y, start_x + size_x, start_y + size_y);
+
+#ifdef _SKIA_SUPPORT_
+  std::unique_ptr<CFX_SkiaDevice> pDevice(new CFX_SkiaDevice);
+#else
+  std::unique_ptr<CFX_FxgeDevice> pDevice(new CFX_FxgeDevice);
+#endif
+  pDevice->Attach((CFX_DIBitmap*)bitmap);
+  pDevice->SaveState();
+  pDevice->SetClip_Rect(clip);
+
+#ifndef PDF_ENABLE_XFA
+  if (CPDFSDK_PageView* pPageView = FormHandleToPageView(hHandle, pPage))
+    pPageView->PageView_OnDraw(pDevice.get(), &matrix, &options);
+#else   // PDF_ENABLE_XFA
+  CPDF_RenderOptions options;
+  if (flags & FPDF_LCD_TEXT)
+    options.m_Flags |= RENDER_CLEARTYPE;
+  else
+    options.m_Flags &= ~RENDER_CLEARTYPE;
+
+  // Grayscale output
+  if (flags & FPDF_GRAYSCALE) {
+    options.m_ColorMode = RENDER_COLOR_GRAY;
+    options.m_ForeColor = 0;
+    options.m_BackColor = 0xffffff;
+  }
+  options.m_AddFlags = flags >> 8;
+  options.m_pOCContext = new CPDF_OCContext(pPDFDoc);
+
+  if (CPDFSDK_PageView* pPageView = pFXDoc->GetPageView(pPage))
+    pPageView->PageView_OnDraw(pDevice.get(), &matrix, &options, clip);
+#endif  // PDF_ENABLE_XFA
+
+  pDevice->RestoreState();
+  delete options.m_pOCContext;
+#ifdef PDF_ENABLE_XFA
+  options.m_pOCContext = NULL;
+#endif  // PDF_ENABLE_XFA
+}
+
+#ifdef PDF_ENABLE_XFA
+DLLEXPORT void STDCALL FPDF_Widget_Undo(FPDF_DOCUMENT document,
+                                        FPDF_WIDGET hWidget) {
+  if (NULL == hWidget || NULL == document)
+    return;
+
+  CPDFXFA_Document* pDocument = (CPDFXFA_Document*)document;
+  if (pDocument->GetDocType() != XFA_DOCTYPE_Dynamic &&
+      pDocument->GetDocType() != XFA_DOCTYPE_Static)
+    return;
+
+  IXFA_MenuHandler* pXFAMenuHander =
+      CPDFXFA_App::GetInstance()->GetXFAApp()->GetMenuHandler();
+  if (pXFAMenuHander == NULL)
+    return;
+
+  pXFAMenuHander->Undo((IXFA_Widget*)hWidget);
+}
+DLLEXPORT void STDCALL FPDF_Widget_Redo(FPDF_DOCUMENT document,
+                                        FPDF_WIDGET hWidget) {
+  if (NULL == hWidget || NULL == document)
+    return;
+
+  CPDFXFA_Document* pDocument = (CPDFXFA_Document*)document;
+  if (pDocument->GetDocType() != XFA_DOCTYPE_Dynamic &&
+      pDocument->GetDocType() != XFA_DOCTYPE_Static)
+    return;
+
+  IXFA_MenuHandler* pXFAMenuHander =
+      CPDFXFA_App::GetInstance()->GetXFAApp()->GetMenuHandler();
+  if (pXFAMenuHander == NULL)
+    return;
+
+  pXFAMenuHander->Redo((IXFA_Widget*)hWidget);
+}
+
+DLLEXPORT void STDCALL FPDF_Widget_SelectAll(FPDF_DOCUMENT document,
+                                             FPDF_WIDGET hWidget) {
+  if (NULL == hWidget || NULL == document)
+    return;
+
+  CPDFXFA_Document* pDocument = (CPDFXFA_Document*)document;
+  if (pDocument->GetDocType() != XFA_DOCTYPE_Dynamic &&
+      pDocument->GetDocType() != XFA_DOCTYPE_Static)
+    return;
+
+  IXFA_MenuHandler* pXFAMenuHander =
+      CPDFXFA_App::GetInstance()->GetXFAApp()->GetMenuHandler();
+  if (pXFAMenuHander == NULL)
+    return;
+
+  pXFAMenuHander->SelectAll((IXFA_Widget*)hWidget);
+}
+DLLEXPORT void STDCALL FPDF_Widget_Copy(FPDF_DOCUMENT document,
+                                        FPDF_WIDGET hWidget,
+                                        FPDF_WIDESTRING wsText,
+                                        FPDF_DWORD* size) {
+  if (NULL == hWidget || NULL == document)
+    return;
+
+  CPDFXFA_Document* pDocument = (CPDFXFA_Document*)document;
+  if (pDocument->GetDocType() != XFA_DOCTYPE_Dynamic &&
+      pDocument->GetDocType() != XFA_DOCTYPE_Static)
+    return;
+
+  IXFA_MenuHandler* pXFAMenuHander =
+      CPDFXFA_App::GetInstance()->GetXFAApp()->GetMenuHandler();
+  if (pXFAMenuHander == NULL)
+    return;
+
+  CFX_WideString wsCpText;
+  pXFAMenuHander->Copy((IXFA_Widget*)hWidget, wsCpText);
+
+  CFX_ByteString bsCpText = wsCpText.UTF16LE_Encode();
+  int len = bsCpText.GetLength() / sizeof(unsigned short);
+  if (wsText == NULL) {
+    *size = len;
+    return;
+  }
+
+  int real_size = len < *size ? len : *size;
+  if (real_size > 0) {
+    FXSYS_memcpy((void*)wsText,
+                 bsCpText.GetBuffer(real_size * sizeof(unsigned short)),
+                 real_size * sizeof(unsigned short));
+    bsCpText.ReleaseBuffer(real_size * sizeof(unsigned short));
+  }
+  *size = real_size;
+}
+
+DLLEXPORT void STDCALL FPDF_Widget_Cut(FPDF_DOCUMENT document,
+                                       FPDF_WIDGET hWidget,
+                                       FPDF_WIDESTRING wsText,
+                                       FPDF_DWORD* size) {
+  if (NULL == hWidget || NULL == document)
+    return;
+  CPDFXFA_Document* pDocument = (CPDFXFA_Document*)document;
+  if (pDocument->GetDocType() != XFA_DOCTYPE_Dynamic &&
+      pDocument->GetDocType() != XFA_DOCTYPE_Static)
+    return;
+
+  IXFA_MenuHandler* pXFAMenuHander =
+      CPDFXFA_App::GetInstance()->GetXFAApp()->GetMenuHandler();
+  if (pXFAMenuHander == NULL)
+    return;
+
+  CFX_WideString wsCpText;
+  pXFAMenuHander->Cut((IXFA_Widget*)hWidget, wsCpText);
+
+  CFX_ByteString bsCpText = wsCpText.UTF16LE_Encode();
+  int len = bsCpText.GetLength() / sizeof(unsigned short);
+  if (wsText == NULL) {
+    *size = len;
+    return;
+  }
+
+  int real_size = len < *size ? len : *size;
+  if (real_size > 0) {
+    FXSYS_memcpy((void*)wsText,
+                 bsCpText.GetBuffer(real_size * sizeof(unsigned short)),
+                 real_size * sizeof(unsigned short));
+    bsCpText.ReleaseBuffer(real_size * sizeof(unsigned short));
+  }
+  *size = real_size;
+}
+
+DLLEXPORT void STDCALL FPDF_Widget_Paste(FPDF_DOCUMENT document,
+                                         FPDF_WIDGET hWidget,
+                                         FPDF_WIDESTRING wsText,
+                                         FPDF_DWORD size) {
+  if (NULL == hWidget || NULL == document)
+    return;
+
+  CPDFXFA_Document* pDocument = (CPDFXFA_Document*)document;
+  if (pDocument->GetDocType() != XFA_DOCTYPE_Dynamic &&
+      pDocument->GetDocType() != XFA_DOCTYPE_Static)
+    return;
+
+  IXFA_MenuHandler* pXFAMenuHander =
+      CPDFXFA_App::GetInstance()->GetXFAApp()->GetMenuHandler();
+  if (pXFAMenuHander == NULL)
+    return;
+
+  CFX_WideString wstr = CFX_WideString::FromUTF16LE(wsText, size);
+  pXFAMenuHander->Paste((IXFA_Widget*)hWidget, wstr);
+}
+
+DLLEXPORT void STDCALL
+FPDF_Widget_ReplaceSpellCheckWord(FPDF_DOCUMENT document,
+                                  FPDF_WIDGET hWidget,
+                                  float x,
+                                  float y,
+                                  FPDF_BYTESTRING bsText) {
+  if (NULL == hWidget || NULL == document)
+    return;
+
+  CPDFXFA_Document* pDocument = (CPDFXFA_Document*)document;
+  if (pDocument->GetDocType() != XFA_DOCTYPE_Dynamic &&
+      pDocument->GetDocType() != XFA_DOCTYPE_Static)
+    return;
+
+  IXFA_MenuHandler* pXFAMenuHander =
+      CPDFXFA_App::GetInstance()->GetXFAApp()->GetMenuHandler();
+  if (pXFAMenuHander == NULL)
+    return;
+
+  CFX_PointF ptPopup;
+  ptPopup.x = x;
+  ptPopup.y = y;
+  CFX_ByteStringC bs(bsText);
+  pXFAMenuHander->ReplaceSpellCheckWord((IXFA_Widget*)hWidget, ptPopup, bs);
+}
+
+DLLEXPORT void STDCALL
+FPDF_Widget_GetSpellCheckWords(FPDF_DOCUMENT document,
+                               FPDF_WIDGET hWidget,
+                               float x,
+                               float y,
+                               FPDF_STRINGHANDLE* stringHandle) {
+  if (!hWidget || !document)
+    return;
+
+  CPDFXFA_Document* pDocument = (CPDFXFA_Document*)document;
+  if (pDocument->GetDocType() != XFA_DOCTYPE_Dynamic &&
+      pDocument->GetDocType() != XFA_DOCTYPE_Static)
+    return;
+
+  IXFA_MenuHandler* pXFAMenuHander =
+      CPDFXFA_App::GetInstance()->GetXFAApp()->GetMenuHandler();
+  if (!pXFAMenuHander)
+    return;
+
+  std::vector<CFX_ByteString>* sSuggestWords = new std::vector<CFX_ByteString>;
+  CFX_PointF ptPopup;
+  ptPopup.x = x;
+  ptPopup.y = y;
+  pXFAMenuHander->GetSuggestWords(reinterpret_cast<IXFA_Widget*>(hWidget),
+                                  ptPopup, *sSuggestWords);
+  *stringHandle = ToFPDFStringHandle(sSuggestWords);
+}
+
+DLLEXPORT int STDCALL FPDF_StringHandleCounts(FPDF_STRINGHANDLE sHandle) {
+  std::vector<CFX_ByteString>* sSuggestWords = FromFPDFStringHandle(sHandle);
+  return sSuggestWords ? pdfium::CollectionSize<int>(*sSuggestWords) : -1;
+}
+
+DLLEXPORT FPDF_BOOL STDCALL
+FPDF_StringHandleGetStringByIndex(FPDF_STRINGHANDLE sHandle,
+                                  int index,
+                                  FPDF_BYTESTRING bsText,
+                                  FPDF_DWORD* size) {
+  if (!sHandle || !size)
+    return FALSE;
+
+  int count = FPDF_StringHandleCounts(sHandle);
+  if (index < 0 || index >= count)
+    return FALSE;
+
+  std::vector<CFX_ByteString>* sSuggestWords = FromFPDFStringHandle(sHandle);
+  int len = (*sSuggestWords)[index].GetLength();
+  if (!bsText) {
+    *size = len;
+    return TRUE;
+  }
+
+  int real_size = len < *size ? len : *size;
+  if (real_size > 0)
+    FXSYS_memcpy((void*)bsText, (const FX_CHAR*)(*sSuggestWords)[index],
+                 real_size);
+  *size = real_size;
+  return TRUE;
+}
+
+DLLEXPORT void STDCALL
+FPDF_StringHandleRelease(FPDF_STRINGHANDLE stringHandle) {
+  delete FromFPDFStringHandle(stringHandle);
+}
+
+DLLEXPORT FPDF_BOOL STDCALL
+FPDF_StringHandleAddString(FPDF_STRINGHANDLE stringHandle,
+                           FPDF_BYTESTRING bsText,
+                           FPDF_DWORD size) {
+  if (!stringHandle || !bsText || size == 0)
+    return FALSE;
+
+  FromFPDFStringHandle(stringHandle)->push_back(CFX_ByteString(bsText, size));
+  return TRUE;
+}
+#endif  // PDF_ENABLE_XFA
+
+DLLEXPORT void STDCALL FPDF_SetFormFieldHighlightColor(FPDF_FORMHANDLE hHandle,
+                                                       int fieldType,
+                                                       unsigned long color) {
+  if (CPDFSDK_InterForm* pInterForm = FormHandleToInterForm(hHandle))
+    pInterForm->SetHighlightColor(color, fieldType);
+}
+
+DLLEXPORT void STDCALL FPDF_SetFormFieldHighlightAlpha(FPDF_FORMHANDLE hHandle,
+                                                       unsigned char alpha) {
+  if (CPDFSDK_InterForm* pInterForm = FormHandleToInterForm(hHandle))
+    pInterForm->SetHighlightAlpha(alpha);
+}
+
+DLLEXPORT void STDCALL FPDF_RemoveFormFieldHighlight(FPDF_FORMHANDLE hHandle) {
+  if (CPDFSDK_InterForm* pInterForm = FormHandleToInterForm(hHandle))
+    pInterForm->RemoveAllHighLight();
+}
+
+DLLEXPORT void STDCALL FORM_OnAfterLoadPage(FPDF_PAGE page,
+                                            FPDF_FORMHANDLE hHandle) {
+  if (CPDFSDK_PageView* pPageView = FormHandleToPageView(hHandle, page))
+    pPageView->SetValid(TRUE);
+}
+
+DLLEXPORT void STDCALL FORM_OnBeforeClosePage(FPDF_PAGE page,
+                                              FPDF_FORMHANDLE hHandle) {
+  if (!hHandle)
+    return;
+
+  CPDFSDK_Document* pSDKDoc = ((CPDFDoc_Environment*)hHandle)->GetSDKDocument();
+  if (!pSDKDoc)
+    return;
+
+  UnderlyingPageType* pPage = UnderlyingFromFPDFPage(page);
+  if (!pPage)
+    return;
+
+  CPDFSDK_PageView* pPageView = pSDKDoc->GetPageView(pPage, FALSE);
+  if (pPageView) {
+    pPageView->SetValid(FALSE);
+    // RemovePageView() takes care of the delete for us.
+    pSDKDoc->RemovePageView(pPage);
+  }
+}
+
+DLLEXPORT void STDCALL FORM_DoDocumentJSAction(FPDF_FORMHANDLE hHandle) {
+  CPDFSDK_Document* pSDKDoc = CPDFSDK_Document::FromFPDFFormHandle(hHandle);
+  if (pSDKDoc && ((CPDFDoc_Environment*)hHandle)->IsJSInitiated())
+    pSDKDoc->ProcJavascriptFun();
+}
+
+DLLEXPORT void STDCALL FORM_DoDocumentOpenAction(FPDF_FORMHANDLE hHandle) {
+  CPDFSDK_Document* pSDKDoc = CPDFSDK_Document::FromFPDFFormHandle(hHandle);
+  if (pSDKDoc && ((CPDFDoc_Environment*)hHandle)->IsJSInitiated())
+    pSDKDoc->ProcOpenAction();
+}
+
+DLLEXPORT void STDCALL FORM_DoDocumentAAction(FPDF_FORMHANDLE hHandle,
+                                              int aaType) {
+  CPDFSDK_Document* pSDKDoc = CPDFSDK_Document::FromFPDFFormHandle(hHandle);
+  if (!pSDKDoc)
+    return;
+
+  CPDF_Document* pDoc = pSDKDoc->GetPDFDocument();
+  CPDF_Dictionary* pDic = pDoc->GetRoot();
+  if (!pDic)
+    return;
+
+  CPDF_AAction aa(pDic->GetDictBy("AA"));
+  if (aa.ActionExist((CPDF_AAction::AActionType)aaType)) {
+    CPDF_Action action = aa.GetAction((CPDF_AAction::AActionType)aaType);
+    CPDFSDK_ActionHandler* pActionHandler =
+        ((CPDFDoc_Environment*)hHandle)->GetActionHander();
+    pActionHandler->DoAction_Document(action, (CPDF_AAction::AActionType)aaType,
+                                      pSDKDoc);
+  }
+}
+
+DLLEXPORT void STDCALL FORM_DoPageAAction(FPDF_PAGE page,
+                                          FPDF_FORMHANDLE hHandle,
+                                          int aaType) {
+  if (!hHandle)
+    return;
+  CPDFSDK_Document* pSDKDoc = ((CPDFDoc_Environment*)hHandle)->GetSDKDocument();
+  UnderlyingPageType* pPage = UnderlyingFromFPDFPage(page);
+  CPDF_Page* pPDFPage = CPDFPageFromFPDFPage(page);
+  if (!pPDFPage)
+    return;
+  if (pSDKDoc->GetPageView(pPage, FALSE)) {
+    CPDFDoc_Environment* pEnv = pSDKDoc->GetEnv();
+    CPDFSDK_ActionHandler* pActionHandler = pEnv->GetActionHander();
+    CPDF_Dictionary* pPageDict = pPDFPage->m_pFormDict;
+    CPDF_AAction aa(pPageDict->GetDictBy("AA"));
+    if (FPDFPAGE_AACTION_OPEN == aaType) {
+      if (aa.ActionExist(CPDF_AAction::OpenPage)) {
+        CPDF_Action action = aa.GetAction(CPDF_AAction::OpenPage);
+        pActionHandler->DoAction_Page(action, CPDF_AAction::OpenPage, pSDKDoc);
+      }
+    } else {
+      if (aa.ActionExist(CPDF_AAction::ClosePage)) {
+        CPDF_Action action = aa.GetAction(CPDF_AAction::ClosePage);
+        pActionHandler->DoAction_Page(action, CPDF_AAction::ClosePage, pSDKDoc);
+      }
+    }
+  }
+}