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, 1110 insertions, 0 deletions

diff --git a/fpdfsdk/fsdk_annothandler.cpp b/fpdfsdk/fsdk_annothandler.cpp
new file mode 100644
index 0000000000..f2456b0fb4
--- /dev/null
+++ b/fpdfsdk/fsdk_annothandler.cpp
@@ -0,0 +1,1110 @@
+// 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 "fpdfsdk/include/fsdk_annothandler.h"
+
+#include <algorithm>
+#include <vector>
+
+#include "core/include/fpdfapi/cpdf_document.h"
+#include "fpdfsdk/include/formfiller/FFL_FormFiller.h"
+#include "fpdfsdk/include/fsdk_define.h"
+#include "fpdfsdk/include/fsdk_mgr.h"
+
+#ifdef PDF_ENABLE_XFA
+#include "fpdfsdk/include/fpdfxfa/fpdfxfa_doc.h"
+#include "fpdfsdk/include/fpdfxfa/fpdfxfa_page.h"
+#include "fpdfsdk/include/fpdfxfa/fpdfxfa_util.h"
+#include "xfa/include/fxgraphics/fx_graphics.h"
+#endif  // PDF_ENABLE_XFA
+
+CPDFSDK_AnnotHandlerMgr::CPDFSDK_AnnotHandlerMgr(CPDFDoc_Environment* pApp) {
+  m_pApp = pApp;
+
+  CPDFSDK_BFAnnotHandler* pHandler = new CPDFSDK_BFAnnotHandler(m_pApp);
+  pHandler->SetFormFiller(m_pApp->GetIFormFiller());
+  RegisterAnnotHandler(pHandler);
+#ifdef PDF_ENABLE_XFA
+  CPDFSDK_XFAAnnotHandler* pXFAAnnotHandler =
+      new CPDFSDK_XFAAnnotHandler(m_pApp);
+  RegisterAnnotHandler(pXFAAnnotHandler);
+#endif  // PDF_ENABLE_XFA
+}
+
+CPDFSDK_AnnotHandlerMgr::~CPDFSDK_AnnotHandlerMgr() {
+  for (int i = 0; i < m_Handlers.GetSize(); i++) {
+    IPDFSDK_AnnotHandler* pHandler = m_Handlers.GetAt(i);
+    delete pHandler;
+  }
+  m_Handlers.RemoveAll();
+  m_mapType2Handler.clear();
+}
+
+void CPDFSDK_AnnotHandlerMgr::RegisterAnnotHandler(
+    IPDFSDK_AnnotHandler* pAnnotHandler) {
+  ASSERT(!GetAnnotHandler(pAnnotHandler->GetType()));
+
+  m_Handlers.Add(pAnnotHandler);
+  m_mapType2Handler[pAnnotHandler->GetType()] = pAnnotHandler;
+}
+
+void CPDFSDK_AnnotHandlerMgr::UnRegisterAnnotHandler(
+    IPDFSDK_AnnotHandler* pAnnotHandler) {
+  m_mapType2Handler.erase(pAnnotHandler->GetType());
+  for (int i = 0, sz = m_Handlers.GetSize(); i < sz; i++) {
+    if (m_Handlers.GetAt(i) == pAnnotHandler) {
+      m_Handlers.RemoveAt(i);
+      break;
+    }
+  }
+}
+
+CPDFSDK_Annot* CPDFSDK_AnnotHandlerMgr::NewAnnot(CPDF_Annot* pAnnot,
+                                                 CPDFSDK_PageView* pPageView) {
+  ASSERT(pPageView);
+
+  if (IPDFSDK_AnnotHandler* pAnnotHandler =
+          GetAnnotHandler(pAnnot->GetSubType())) {
+    return pAnnotHandler->NewAnnot(pAnnot, pPageView);
+  }
+
+  return new CPDFSDK_BAAnnot(pAnnot, pPageView);
+}
+
+#ifdef PDF_ENABLE_XFA
+CPDFSDK_Annot* CPDFSDK_AnnotHandlerMgr::NewAnnot(IXFA_Widget* pAnnot,
+                                                 CPDFSDK_PageView* pPageView) {
+  ASSERT(pAnnot);
+  ASSERT(pPageView);
+
+  if (IPDFSDK_AnnotHandler* pAnnotHandler =
+          GetAnnotHandler(FSDK_XFAWIDGET_TYPENAME)) {
+    return pAnnotHandler->NewAnnot(pAnnot, pPageView);
+  }
+
+  return NULL;
+}
+#endif  // PDF_ENABLE_XFA
+
+void CPDFSDK_AnnotHandlerMgr::ReleaseAnnot(CPDFSDK_Annot* pAnnot) {
+  if (IPDFSDK_AnnotHandler* pAnnotHandler = GetAnnotHandler(pAnnot)) {
+    pAnnotHandler->OnRelease(pAnnot);
+    pAnnotHandler->ReleaseAnnot(pAnnot);
+  } else {
+    delete (CPDFSDK_Annot*)pAnnot;
+  }
+}
+
+void CPDFSDK_AnnotHandlerMgr::Annot_OnCreate(CPDFSDK_Annot* pAnnot) {
+  CPDF_Annot* pPDFAnnot = pAnnot->GetPDFAnnot();
+
+  CPDFSDK_DateTime curTime;
+  pPDFAnnot->GetAnnotDict()->SetAtString("M", curTime.ToPDFDateTimeString());
+  pPDFAnnot->GetAnnotDict()->SetAtNumber("F", 0);
+
+  if (IPDFSDK_AnnotHandler* pAnnotHandler = GetAnnotHandler(pAnnot)) {
+    pAnnotHandler->OnCreate(pAnnot);
+  }
+}
+
+void CPDFSDK_AnnotHandlerMgr::Annot_OnLoad(CPDFSDK_Annot* pAnnot) {
+  ASSERT(pAnnot);
+
+  if (IPDFSDK_AnnotHandler* pAnnotHandler = GetAnnotHandler(pAnnot)) {
+    pAnnotHandler->OnLoad(pAnnot);
+  }
+}
+
+IPDFSDK_AnnotHandler* CPDFSDK_AnnotHandlerMgr::GetAnnotHandler(
+    CPDFSDK_Annot* pAnnot) const {
+  CPDF_Annot* pPDFAnnot = pAnnot->GetPDFAnnot();
+  if (pPDFAnnot)
+    return GetAnnotHandler(pPDFAnnot->GetSubType());
+#ifdef PDF_ENABLE_XFA
+  if (pAnnot->GetXFAWidget())
+    return GetAnnotHandler(FSDK_XFAWIDGET_TYPENAME);
+#endif  // PDF_ENABLE_XFA
+  return nullptr;
+}
+
+IPDFSDK_AnnotHandler* CPDFSDK_AnnotHandlerMgr::GetAnnotHandler(
+    const CFX_ByteString& sType) const {
+  auto it = m_mapType2Handler.find(sType);
+  return it != m_mapType2Handler.end() ? it->second : nullptr;
+}
+
+void CPDFSDK_AnnotHandlerMgr::Annot_OnDraw(CPDFSDK_PageView* pPageView,
+                                           CPDFSDK_Annot* pAnnot,
+                                           CFX_RenderDevice* pDevice,
+                                           CFX_Matrix* pUser2Device,
+                                           FX_DWORD dwFlags) {
+  ASSERT(pAnnot);
+
+  if (IPDFSDK_AnnotHandler* pAnnotHandler = GetAnnotHandler(pAnnot)) {
+    pAnnotHandler->OnDraw(pPageView, pAnnot, pDevice, pUser2Device, dwFlags);
+  } else {
+#ifdef PDF_ENABLE_XFA
+    if (pAnnot->IsXFAField())
+      return;
+#endif  // PDF_ENABLE_XFA
+    static_cast<CPDFSDK_BAAnnot*>(pAnnot)
+        ->DrawAppearance(pDevice, pUser2Device, CPDF_Annot::Normal, nullptr);
+  }
+}
+
+FX_BOOL CPDFSDK_AnnotHandlerMgr::Annot_OnLButtonDown(
+    CPDFSDK_PageView* pPageView,
+    CPDFSDK_Annot* pAnnot,
+    FX_DWORD nFlags,
+    const CFX_FloatPoint& point) {
+  ASSERT(pAnnot);
+
+  if (IPDFSDK_AnnotHandler* pAnnotHandler = GetAnnotHandler(pAnnot)) {
+    return pAnnotHandler->OnLButtonDown(pPageView, pAnnot, nFlags, point);
+  }
+  return FALSE;
+}
+FX_BOOL CPDFSDK_AnnotHandlerMgr::Annot_OnLButtonUp(
+    CPDFSDK_PageView* pPageView,
+    CPDFSDK_Annot* pAnnot,
+    FX_DWORD nFlags,
+    const CFX_FloatPoint& point) {
+  ASSERT(pAnnot);
+
+  if (IPDFSDK_AnnotHandler* pAnnotHandler = GetAnnotHandler(pAnnot)) {
+    return pAnnotHandler->OnLButtonUp(pPageView, pAnnot, nFlags, point);
+  }
+  return FALSE;
+}
+FX_BOOL CPDFSDK_AnnotHandlerMgr::Annot_OnLButtonDblClk(
+    CPDFSDK_PageView* pPageView,
+    CPDFSDK_Annot* pAnnot,
+    FX_DWORD nFlags,
+    const CFX_FloatPoint& point) {
+  ASSERT(pAnnot);
+
+  if (IPDFSDK_AnnotHandler* pAnnotHandler = GetAnnotHandler(pAnnot)) {
+    return pAnnotHandler->OnLButtonDblClk(pPageView, pAnnot, nFlags, point);
+  }
+  return FALSE;
+}
+FX_BOOL CPDFSDK_AnnotHandlerMgr::Annot_OnMouseMove(
+    CPDFSDK_PageView* pPageView,
+    CPDFSDK_Annot* pAnnot,
+    FX_DWORD nFlags,
+    const CFX_FloatPoint& point) {
+  ASSERT(pAnnot);
+
+  if (IPDFSDK_AnnotHandler* pAnnotHandler = GetAnnotHandler(pAnnot)) {
+    return pAnnotHandler->OnMouseMove(pPageView, pAnnot, nFlags, point);
+  }
+  return FALSE;
+}
+FX_BOOL CPDFSDK_AnnotHandlerMgr::Annot_OnMouseWheel(
+    CPDFSDK_PageView* pPageView,
+    CPDFSDK_Annot* pAnnot,
+    FX_DWORD nFlags,
+    short zDelta,
+    const CFX_FloatPoint& point) {
+  ASSERT(pAnnot);
+
+  if (IPDFSDK_AnnotHandler* pAnnotHandler = GetAnnotHandler(pAnnot)) {
+    return pAnnotHandler->OnMouseWheel(pPageView, pAnnot, nFlags, zDelta,
+                                       point);
+  }
+  return FALSE;
+}
+FX_BOOL CPDFSDK_AnnotHandlerMgr::Annot_OnRButtonDown(
+    CPDFSDK_PageView* pPageView,
+    CPDFSDK_Annot* pAnnot,
+    FX_DWORD nFlags,
+    const CFX_FloatPoint& point) {
+  ASSERT(pAnnot);
+
+  if (IPDFSDK_AnnotHandler* pAnnotHandler = GetAnnotHandler(pAnnot)) {
+    return pAnnotHandler->OnRButtonDown(pPageView, pAnnot, nFlags, point);
+  }
+  return FALSE;
+}
+FX_BOOL CPDFSDK_AnnotHandlerMgr::Annot_OnRButtonUp(
+    CPDFSDK_PageView* pPageView,
+    CPDFSDK_Annot* pAnnot,
+    FX_DWORD nFlags,
+    const CFX_FloatPoint& point) {
+  ASSERT(pAnnot);
+
+  if (IPDFSDK_AnnotHandler* pAnnotHandler = GetAnnotHandler(pAnnot)) {
+    return pAnnotHandler->OnRButtonUp(pPageView, pAnnot, nFlags, point);
+  }
+  return FALSE;
+}
+
+void CPDFSDK_AnnotHandlerMgr::Annot_OnMouseEnter(CPDFSDK_PageView* pPageView,
+                                                 CPDFSDK_Annot* pAnnot,
+                                                 FX_DWORD nFlag) {
+  ASSERT(pAnnot);
+
+  if (IPDFSDK_AnnotHandler* pAnnotHandler = GetAnnotHandler(pAnnot))
+    pAnnotHandler->OnMouseEnter(pPageView, pAnnot, nFlag);
+}
+
+void CPDFSDK_AnnotHandlerMgr::Annot_OnMouseExit(CPDFSDK_PageView* pPageView,
+                                                CPDFSDK_Annot* pAnnot,
+                                                FX_DWORD nFlag) {
+  ASSERT(pAnnot);
+
+  if (IPDFSDK_AnnotHandler* pAnnotHandler = GetAnnotHandler(pAnnot))
+    pAnnotHandler->OnMouseExit(pPageView, pAnnot, nFlag);
+}
+
+FX_BOOL CPDFSDK_AnnotHandlerMgr::Annot_OnChar(CPDFSDK_Annot* pAnnot,
+                                              FX_DWORD nChar,
+                                              FX_DWORD nFlags) {
+  if (IPDFSDK_AnnotHandler* pAnnotHandler = GetAnnotHandler(pAnnot)) {
+    return pAnnotHandler->OnChar(pAnnot, nChar, nFlags);
+  }
+  return FALSE;
+}
+
+FX_BOOL CPDFSDK_AnnotHandlerMgr::Annot_OnKeyDown(CPDFSDK_Annot* pAnnot,
+                                                 int nKeyCode,
+                                                 int nFlag) {
+  if (!m_pApp->FFI_IsCTRLKeyDown(nFlag) && !m_pApp->FFI_IsALTKeyDown(nFlag)) {
+    CPDFSDK_PageView* pPage = pAnnot->GetPageView();
+    CPDFSDK_Annot* pFocusAnnot = pPage->GetFocusAnnot();
+    if (pFocusAnnot && (nKeyCode == FWL_VKEY_Tab)) {
+      CPDFSDK_Annot* pNext =
+          GetNextAnnot(pFocusAnnot, !m_pApp->FFI_IsSHIFTKeyDown(nFlag));
+
+      if (pNext && pNext != pFocusAnnot) {
+        CPDFSDK_Document* pDocument = pPage->GetSDKDocument();
+        pDocument->SetFocusAnnot(pNext);
+        return TRUE;
+      }
+    }
+  }
+
+  if (IPDFSDK_AnnotHandler* pAnnotHandler = GetAnnotHandler(pAnnot)) {
+    return pAnnotHandler->OnKeyDown(pAnnot, nKeyCode, nFlag);
+  }
+  return FALSE;
+}
+FX_BOOL CPDFSDK_AnnotHandlerMgr::Annot_OnKeyUp(CPDFSDK_Annot* pAnnot,
+                                               int nKeyCode,
+                                               int nFlag) {
+  return FALSE;
+}
+
+FX_BOOL CPDFSDK_AnnotHandlerMgr::Annot_OnSetFocus(CPDFSDK_Annot* pAnnot,
+                                                  FX_DWORD nFlag) {
+  ASSERT(pAnnot);
+
+  if (IPDFSDK_AnnotHandler* pAnnotHandler = GetAnnotHandler(pAnnot)) {
+    if (pAnnotHandler->OnSetFocus(pAnnot, nFlag)) {
+      CPDFSDK_PageView* pPage = pAnnot->GetPageView();
+      pPage->GetSDKDocument();
+      return TRUE;
+    }
+  }
+  return FALSE;
+}
+
+FX_BOOL CPDFSDK_AnnotHandlerMgr::Annot_OnKillFocus(CPDFSDK_Annot* pAnnot,
+                                                   FX_DWORD nFlag) {
+  ASSERT(pAnnot);
+  if (IPDFSDK_AnnotHandler* pAnnotHandler = GetAnnotHandler(pAnnot))
+    return pAnnotHandler->OnKillFocus(pAnnot, nFlag);
+
+  return FALSE;
+}
+
+#ifdef PDF_ENABLE_XFA
+FX_BOOL CPDFSDK_AnnotHandlerMgr::Annot_OnChangeFocus(
+    CPDFSDK_Annot* pSetAnnot,
+    CPDFSDK_Annot* pKillAnnot) {
+  FX_BOOL bXFA = (pSetAnnot && pSetAnnot->GetXFAWidget()) ||
+                 (pKillAnnot && pKillAnnot->GetXFAWidget());
+
+  if (bXFA) {
+    if (IPDFSDK_AnnotHandler* pXFAAnnotHandler =
+            GetAnnotHandler(FSDK_XFAWIDGET_TYPENAME))
+      return pXFAAnnotHandler->OnXFAChangedFocus(pKillAnnot, pSetAnnot);
+  }
+
+  return TRUE;
+}
+#endif  // PDF_ENABLE_XFA
+
+CFX_FloatRect CPDFSDK_AnnotHandlerMgr::Annot_OnGetViewBBox(
+    CPDFSDK_PageView* pPageView,
+    CPDFSDK_Annot* pAnnot) {
+  ASSERT(pAnnot);
+  if (IPDFSDK_AnnotHandler* pAnnotHandler = GetAnnotHandler(pAnnot))
+    return pAnnotHandler->GetViewBBox(pPageView, pAnnot);
+
+  return pAnnot->GetRect();
+}
+
+FX_BOOL CPDFSDK_AnnotHandlerMgr::Annot_OnHitTest(CPDFSDK_PageView* pPageView,
+                                                 CPDFSDK_Annot* pAnnot,
+                                                 const CFX_FloatPoint& point) {
+  ASSERT(pAnnot);
+  if (IPDFSDK_AnnotHandler* pAnnotHandler = GetAnnotHandler(pAnnot)) {
+    if (pAnnotHandler->CanAnswer(pAnnot))
+      return pAnnotHandler->HitTest(pPageView, pAnnot, point);
+  }
+  return FALSE;
+}
+
+CPDFSDK_Annot* CPDFSDK_AnnotHandlerMgr::GetNextAnnot(CPDFSDK_Annot* pSDKAnnot,
+                                                     FX_BOOL bNext) {
+#ifdef PDF_ENABLE_XFA
+  CPDFSDK_PageView* pPageView = pSDKAnnot->GetPageView();
+  CPDFXFA_Page* pPage = pPageView->GetPDFXFAPage();
+  if (pPage == NULL)
+    return NULL;
+  if (pPage->GetPDFPage()) {  // for pdf annots.
+    CBA_AnnotIterator ai(pSDKAnnot->GetPageView(), pSDKAnnot->GetType(), "");
+    CPDFSDK_Annot* pNext =
+        bNext ? ai.GetNextAnnot(pSDKAnnot) : ai.GetPrevAnnot(pSDKAnnot);
+    return pNext;
+  }
+  // for xfa annots
+  IXFA_WidgetIterator* pWidgetIterator =
+      pPage->GetXFAPageView()->CreateWidgetIterator(
+          XFA_TRAVERSEWAY_Tranvalse, XFA_WIDGETFILTER_Visible |
+                                         XFA_WIDGETFILTER_Viewable |
+                                         XFA_WIDGETFILTER_Field);
+  if (pWidgetIterator == NULL)
+    return NULL;
+  if (pWidgetIterator->GetCurrentWidget() != pSDKAnnot->GetXFAWidget())
+    pWidgetIterator->SetCurrentWidget(pSDKAnnot->GetXFAWidget());
+  IXFA_Widget* hNextFocus = NULL;
+  hNextFocus =
+      bNext ? pWidgetIterator->MoveToNext() : pWidgetIterator->MoveToPrevious();
+  if (!hNextFocus && pSDKAnnot)
+    hNextFocus = pWidgetIterator->MoveToFirst();
+
+  pWidgetIterator->Release();
+  return pPageView->GetAnnotByXFAWidget(hNextFocus);
+#else   // PDF_ENABLE_XFA
+  CBA_AnnotIterator ai(pSDKAnnot->GetPageView(), "Widget", "");
+  return bNext ? ai.GetNextAnnot(pSDKAnnot) : ai.GetPrevAnnot(pSDKAnnot);
+#endif  // PDF_ENABLE_XFA
+}
+
+FX_BOOL CPDFSDK_BFAnnotHandler::CanAnswer(CPDFSDK_Annot* pAnnot) {
+  ASSERT(pAnnot->GetType() == "Widget");
+  if (pAnnot->GetSubType() == BFFT_SIGNATURE)
+    return FALSE;
+
+  CPDFSDK_Widget* pWidget = (CPDFSDK_Widget*)pAnnot;
+  if (!pWidget->IsVisible())
+    return FALSE;
+
+  int nFieldFlags = pWidget->GetFieldFlags();
+  if ((nFieldFlags & FIELDFLAG_READONLY) == FIELDFLAG_READONLY)
+    return FALSE;
+
+  if (pWidget->GetFieldType() == FIELDTYPE_PUSHBUTTON)
+    return TRUE;
+
+  CPDF_Page* pPage = pWidget->GetPDFPage();
+  CPDF_Document* pDocument = pPage->m_pDocument;
+  FX_DWORD dwPermissions = pDocument->GetUserPermissions();
+  return (dwPermissions & FPDFPERM_FILL_FORM) ||
+         (dwPermissions & FPDFPERM_ANNOT_FORM);
+}
+
+CPDFSDK_Annot* CPDFSDK_BFAnnotHandler::NewAnnot(CPDF_Annot* pAnnot,
+                                                CPDFSDK_PageView* pPage) {
+  CPDFSDK_Document* pSDKDoc = m_pApp->GetSDKDocument();
+  CPDFSDK_InterForm* pInterForm = (CPDFSDK_InterForm*)pSDKDoc->GetInterForm();
+  CPDF_FormControl* pCtrl = CPDFSDK_Widget::GetFormControl(
+      pInterForm->GetInterForm(), pAnnot->GetAnnotDict());
+  if (!pCtrl)
+    return nullptr;
+
+  CPDFSDK_Widget* pWidget = new CPDFSDK_Widget(pAnnot, pPage, pInterForm);
+  pInterForm->AddMap(pCtrl, pWidget);
+  CPDF_InterForm* pPDFInterForm = pInterForm->GetInterForm();
+  if (pPDFInterForm && pPDFInterForm->NeedConstructAP())
+    pWidget->ResetAppearance(nullptr, FALSE);
+
+  return pWidget;
+}
+
+#ifdef PDF_ENABLE_XFA
+CPDFSDK_Annot* CPDFSDK_BFAnnotHandler::NewAnnot(IXFA_Widget* hWidget,
+                                                CPDFSDK_PageView* pPage) {
+  return NULL;
+}
+#endif  // PDF_ENABLE_XFA
+
+void CPDFSDK_BFAnnotHandler::ReleaseAnnot(CPDFSDK_Annot* pAnnot) {
+  ASSERT(pAnnot);
+
+  if (m_pFormFiller)
+    m_pFormFiller->OnDelete(pAnnot);
+
+  CPDFSDK_Widget* pWidget = (CPDFSDK_Widget*)pAnnot;
+  CPDFSDK_InterForm* pInterForm = pWidget->GetInterForm();
+  CPDF_FormControl* pCtrol = pWidget->GetFormControl();
+  pInterForm->RemoveMap(pCtrol);
+
+  delete pWidget;
+}
+
+void CPDFSDK_BFAnnotHandler::OnDraw(CPDFSDK_PageView* pPageView,
+                                    CPDFSDK_Annot* pAnnot,
+                                    CFX_RenderDevice* pDevice,
+                                    CFX_Matrix* pUser2Device,
+                                    FX_DWORD dwFlags) {
+  CFX_ByteString sSubType = pAnnot->GetSubType();
+
+  if (sSubType == BFFT_SIGNATURE) {
+    static_cast<CPDFSDK_BAAnnot*>(pAnnot)
+        ->DrawAppearance(pDevice, pUser2Device, CPDF_Annot::Normal, nullptr);
+  } else {
+    if (m_pFormFiller) {
+      m_pFormFiller->OnDraw(pPageView, pAnnot, pDevice, pUser2Device, dwFlags);
+    }
+  }
+}
+
+void CPDFSDK_BFAnnotHandler::OnMouseEnter(CPDFSDK_PageView* pPageView,
+                                          CPDFSDK_Annot* pAnnot,
+                                          FX_DWORD nFlag) {
+  CFX_ByteString sSubType = pAnnot->GetSubType();
+
+  if (sSubType == BFFT_SIGNATURE) {
+  } else {
+    if (m_pFormFiller)
+      m_pFormFiller->OnMouseEnter(pPageView, pAnnot, nFlag);
+  }
+}
+void CPDFSDK_BFAnnotHandler::OnMouseExit(CPDFSDK_PageView* pPageView,
+                                         CPDFSDK_Annot* pAnnot,
+                                         FX_DWORD nFlag) {
+  CFX_ByteString sSubType = pAnnot->GetSubType();
+
+  if (sSubType == BFFT_SIGNATURE) {
+  } else {
+    if (m_pFormFiller)
+      m_pFormFiller->OnMouseExit(pPageView, pAnnot, nFlag);
+  }
+}
+FX_BOOL CPDFSDK_BFAnnotHandler::OnLButtonDown(CPDFSDK_PageView* pPageView,
+                                              CPDFSDK_Annot* pAnnot,
+                                              FX_DWORD nFlags,
+                                              const CFX_FloatPoint& point) {
+  CFX_ByteString sSubType = pAnnot->GetSubType();
+
+  if (sSubType == BFFT_SIGNATURE) {
+  } else {
+    if (m_pFormFiller)
+      return m_pFormFiller->OnLButtonDown(pPageView, pAnnot, nFlags, point);
+  }
+
+  return FALSE;
+}
+
+FX_BOOL CPDFSDK_BFAnnotHandler::OnLButtonUp(CPDFSDK_PageView* pPageView,
+                                            CPDFSDK_Annot* pAnnot,
+                                            FX_DWORD nFlags,
+                                            const CFX_FloatPoint& point) {
+  CFX_ByteString sSubType = pAnnot->GetSubType();
+
+  if (sSubType == BFFT_SIGNATURE) {
+  } else {
+    if (m_pFormFiller)
+      return m_pFormFiller->OnLButtonUp(pPageView, pAnnot, nFlags, point);
+  }
+
+  return FALSE;
+}
+
+FX_BOOL CPDFSDK_BFAnnotHandler::OnLButtonDblClk(CPDFSDK_PageView* pPageView,
+                                                CPDFSDK_Annot* pAnnot,
+                                                FX_DWORD nFlags,
+                                                const CFX_FloatPoint& point) {
+  CFX_ByteString sSubType = pAnnot->GetSubType();
+
+  if (sSubType == BFFT_SIGNATURE) {
+  } else {
+    if (m_pFormFiller)
+      return m_pFormFiller->OnLButtonDblClk(pPageView, pAnnot, nFlags, point);
+  }
+
+  return FALSE;
+}
+
+FX_BOOL CPDFSDK_BFAnnotHandler::OnMouseMove(CPDFSDK_PageView* pPageView,
+                                            CPDFSDK_Annot* pAnnot,
+                                            FX_DWORD nFlags,
+                                            const CFX_FloatPoint& point) {
+  CFX_ByteString sSubType = pAnnot->GetSubType();
+
+  if (sSubType == BFFT_SIGNATURE) {
+  } else {
+    if (m_pFormFiller)
+      return m_pFormFiller->OnMouseMove(pPageView, pAnnot, nFlags, point);
+  }
+
+  return FALSE;
+}
+
+FX_BOOL CPDFSDK_BFAnnotHandler::OnMouseWheel(CPDFSDK_PageView* pPageView,
+                                             CPDFSDK_Annot* pAnnot,
+                                             FX_DWORD nFlags,
+                                             short zDelta,
+                                             const CFX_FloatPoint& point) {
+  CFX_ByteString sSubType = pAnnot->GetSubType();
+
+  if (sSubType == BFFT_SIGNATURE) {
+  } else {
+    if (m_pFormFiller)
+      return m_pFormFiller->OnMouseWheel(pPageView, pAnnot, nFlags, zDelta,
+                                         point);
+  }
+
+  return FALSE;
+}
+
+FX_BOOL CPDFSDK_BFAnnotHandler::OnRButtonDown(CPDFSDK_PageView* pPageView,
+                                              CPDFSDK_Annot* pAnnot,
+                                              FX_DWORD nFlags,
+                                              const CFX_FloatPoint& point) {
+  CFX_ByteString sSubType = pAnnot->GetSubType();
+
+  if (sSubType == BFFT_SIGNATURE) {
+  } else {
+    if (m_pFormFiller)
+      return m_pFormFiller->OnRButtonDown(pPageView, pAnnot, nFlags, point);
+  }
+
+  return FALSE;
+}
+FX_BOOL CPDFSDK_BFAnnotHandler::OnRButtonUp(CPDFSDK_PageView* pPageView,
+                                            CPDFSDK_Annot* pAnnot,
+                                            FX_DWORD nFlags,
+                                            const CFX_FloatPoint& point) {
+  CFX_ByteString sSubType = pAnnot->GetSubType();
+
+  if (sSubType == BFFT_SIGNATURE) {
+  } else {
+    if (m_pFormFiller)
+      return m_pFormFiller->OnRButtonUp(pPageView, pAnnot, nFlags, point);
+  }
+
+  return FALSE;
+}
+
+FX_BOOL CPDFSDK_BFAnnotHandler::OnChar(CPDFSDK_Annot* pAnnot,
+                                       FX_DWORD nChar,
+                                       FX_DWORD nFlags) {
+  CFX_ByteString sSubType = pAnnot->GetSubType();
+
+  if (sSubType == BFFT_SIGNATURE) {
+  } else {
+    if (m_pFormFiller)
+      return m_pFormFiller->OnChar(pAnnot, nChar, nFlags);
+  }
+
+  return FALSE;
+}
+
+FX_BOOL CPDFSDK_BFAnnotHandler::OnKeyDown(CPDFSDK_Annot* pAnnot,
+                                          int nKeyCode,
+                                          int nFlag) {
+  CFX_ByteString sSubType = pAnnot->GetSubType();
+
+  if (sSubType == BFFT_SIGNATURE) {
+  } else {
+    if (m_pFormFiller)
+      return m_pFormFiller->OnKeyDown(pAnnot, nKeyCode, nFlag);
+  }
+
+  return FALSE;
+}
+
+FX_BOOL CPDFSDK_BFAnnotHandler::OnKeyUp(CPDFSDK_Annot* pAnnot,
+                                        int nKeyCode,
+                                        int nFlag) {
+  return FALSE;
+}
+void CPDFSDK_BFAnnotHandler::OnCreate(CPDFSDK_Annot* pAnnot) {
+  CFX_ByteString sSubType = pAnnot->GetSubType();
+
+  if (sSubType == BFFT_SIGNATURE) {
+  } else {
+    if (m_pFormFiller)
+      m_pFormFiller->OnCreate(pAnnot);
+  }
+}
+
+void CPDFSDK_BFAnnotHandler::OnLoad(CPDFSDK_Annot* pAnnot) {
+  if (pAnnot->GetSubType() == BFFT_SIGNATURE)
+    return;
+
+  CPDFSDK_Widget* pWidget = (CPDFSDK_Widget*)pAnnot;
+  if (!pWidget->IsAppearanceValid())
+    pWidget->ResetAppearance(NULL, FALSE);
+
+  int nFieldType = pWidget->GetFieldType();
+  if (nFieldType == FIELDTYPE_TEXTFIELD || nFieldType == FIELDTYPE_COMBOBOX) {
+    FX_BOOL bFormated = FALSE;
+    CFX_WideString sValue = pWidget->OnFormat(bFormated);
+    if (bFormated && nFieldType == FIELDTYPE_COMBOBOX) {
+      pWidget->ResetAppearance(sValue.c_str(), FALSE);
+    }
+  }
+
+#ifdef PDF_ENABLE_XFA
+  CPDFSDK_PageView* pPageView = pAnnot->GetPageView();
+  CPDFSDK_Document* pSDKDoc = pPageView->GetSDKDocument();
+  CPDFXFA_Document* pDoc = pSDKDoc->GetXFADocument();
+  if (pDoc->GetDocType() == DOCTYPE_STATIC_XFA) {
+    if (!pWidget->IsAppearanceValid() && !pWidget->GetValue().IsEmpty())
+      pWidget->ResetAppearance(FALSE);
+  }
+#endif  // PDF_ENABLE_XFA
+  if (m_pFormFiller)
+    m_pFormFiller->OnLoad(pAnnot);
+}
+
+FX_BOOL CPDFSDK_BFAnnotHandler::OnSetFocus(CPDFSDK_Annot* pAnnot,
+                                           FX_DWORD nFlag) {
+  CFX_ByteString sSubType = pAnnot->GetSubType();
+
+  if (sSubType == BFFT_SIGNATURE) {
+  } else {
+    if (m_pFormFiller)
+      return m_pFormFiller->OnSetFocus(pAnnot, nFlag);
+  }
+
+  return TRUE;
+}
+FX_BOOL CPDFSDK_BFAnnotHandler::OnKillFocus(CPDFSDK_Annot* pAnnot,
+                                            FX_DWORD nFlag) {
+  CFX_ByteString sSubType = pAnnot->GetSubType();
+
+  if (sSubType == BFFT_SIGNATURE) {
+  } else {
+    if (m_pFormFiller)
+      return m_pFormFiller->OnKillFocus(pAnnot, nFlag);
+  }
+
+  return TRUE;
+}
+
+CFX_FloatRect CPDFSDK_BFAnnotHandler::GetViewBBox(CPDFSDK_PageView* pPageView,
+                                                  CPDFSDK_Annot* pAnnot) {
+  CFX_ByteString sSubType = pAnnot->GetSubType();
+  if (sSubType != BFFT_SIGNATURE && m_pFormFiller)
+    return CFX_FloatRect(m_pFormFiller->GetViewBBox(pPageView, pAnnot));
+
+  return CFX_FloatRect(0, 0, 0, 0);
+}
+
+FX_BOOL CPDFSDK_BFAnnotHandler::HitTest(CPDFSDK_PageView* pPageView,
+                                        CPDFSDK_Annot* pAnnot,
+                                        const CFX_FloatPoint& point) {
+  ASSERT(pPageView);
+  ASSERT(pAnnot);
+
+  CFX_FloatRect rect = GetViewBBox(pPageView, pAnnot);
+  return rect.Contains(point.x, point.y);
+}
+
+#ifdef PDF_ENABLE_XFA
+#define FWL_WGTHITTEST_Unknown 0
+#define FWL_WGTHITTEST_Client 1     // arrow
+#define FWL_WGTHITTEST_Titlebar 11  // caption
+#define FWL_WGTHITTEST_HScrollBar 15
+#define FWL_WGTHITTEST_VScrollBar 16
+#define FWL_WGTHITTEST_Border 17
+#define FWL_WGTHITTEST_Edit 19
+#define FWL_WGTHITTEST_HyperLink 20
+
+CPDFSDK_XFAAnnotHandler::CPDFSDK_XFAAnnotHandler(CPDFDoc_Environment* pApp)
+    : m_pApp(pApp) {}
+
+CPDFSDK_Annot* CPDFSDK_XFAAnnotHandler::NewAnnot(IXFA_Widget* pAnnot,
+                                                 CPDFSDK_PageView* pPage) {
+  CPDFSDK_Document* pSDKDoc = m_pApp->GetSDKDocument();
+  CPDFSDK_InterForm* pInterForm = (CPDFSDK_InterForm*)pSDKDoc->GetInterForm();
+  CPDFSDK_XFAWidget* pWidget = new CPDFSDK_XFAWidget(pAnnot, pPage, pInterForm);
+  pInterForm->AddXFAMap(pAnnot, pWidget);
+  return pWidget;
+}
+
+FX_BOOL CPDFSDK_XFAAnnotHandler::CanAnswer(CPDFSDK_Annot* pAnnot) {
+  return pAnnot->GetXFAWidget() != NULL;
+}
+
+void CPDFSDK_XFAAnnotHandler::OnDraw(CPDFSDK_PageView* pPageView,
+                                     CPDFSDK_Annot* pAnnot,
+                                     CFX_RenderDevice* pDevice,
+                                     CFX_Matrix* pUser2Device,
+                                     FX_DWORD dwFlags) {
+  ASSERT(pPageView != NULL);
+  ASSERT(pAnnot != NULL);
+
+  CPDFSDK_Document* pSDKDoc = pPageView->GetSDKDocument();
+  IXFA_WidgetHandler* pWidgetHandler = GetXFAWidgetHandler(pAnnot);
+
+  CFX_Graphics gs;
+  gs.Create(pDevice);
+
+  CFX_Matrix mt;
+  mt = *(CFX_Matrix*)pUser2Device;
+
+  FX_BOOL bIsHighlight = FALSE;
+  if (pSDKDoc->GetFocusAnnot() != pAnnot)
+    bIsHighlight = TRUE;
+
+  pWidgetHandler->RenderWidget(pAnnot->GetXFAWidget(), &gs, &mt, bIsHighlight);
+
+  // to do highlight and shadow
+}
+
+void CPDFSDK_XFAAnnotHandler::ReleaseAnnot(CPDFSDK_Annot* pAnnot) {
+  CPDFSDK_XFAWidget* pWidget = (CPDFSDK_XFAWidget*)pAnnot;
+  CPDFSDK_InterForm* pInterForm = pWidget->GetInterForm();
+  pInterForm->RemoveXFAMap(pWidget->GetXFAWidget());
+
+  delete pWidget;
+}
+
+CFX_FloatRect CPDFSDK_XFAAnnotHandler::GetViewBBox(CPDFSDK_PageView* pPageView,
+                                                   CPDFSDK_Annot* pAnnot) {
+  ASSERT(pAnnot);
+
+  IXFA_WidgetHandler* pWidgetHandler = GetXFAWidgetHandler(pAnnot);
+  CFX_RectF rcBBox;
+  XFA_ELEMENT eType =
+      pWidgetHandler->GetDataAcc(pAnnot->GetXFAWidget())->GetUIType();
+  if (eType == XFA_ELEMENT_Signature)
+    pWidgetHandler->GetBBox(pAnnot->GetXFAWidget(), rcBBox,
+                            XFA_WIDGETSTATUS_Visible, TRUE);
+  else
+    pWidgetHandler->GetBBox(pAnnot->GetXFAWidget(), 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;
+
+  return rcWidget;
+}
+
+FX_BOOL CPDFSDK_XFAAnnotHandler::HitTest(CPDFSDK_PageView* pPageView,
+                                         CPDFSDK_Annot* pAnnot,
+                                         const CFX_FloatPoint& point) {
+  if (!pPageView || !pAnnot)
+    return FALSE;
+
+  CPDFSDK_Document* pSDKDoc = pPageView->GetSDKDocument();
+  if (!pSDKDoc)
+    return FALSE;
+
+  CPDFXFA_Document* pDoc = pSDKDoc->GetXFADocument();
+  if (!pDoc)
+    return FALSE;
+
+  IXFA_DocView* pDocView = pDoc->GetXFADocView();
+  if (!pDocView)
+    return FALSE;
+
+  IXFA_WidgetHandler* pWidgetHandler = pDocView->GetWidgetHandler();
+  if (!pWidgetHandler)
+    return FALSE;
+
+  FX_DWORD dwHitTest =
+      pWidgetHandler->OnHitTest(pAnnot->GetXFAWidget(), point.x, point.y);
+  return (dwHitTest != FWL_WGTHITTEST_Unknown);
+}
+
+void CPDFSDK_XFAAnnotHandler::OnMouseEnter(CPDFSDK_PageView* pPageView,
+                                           CPDFSDK_Annot* pAnnot,
+                                           FX_DWORD nFlag) {
+  if (!pPageView || !pAnnot)
+    return;
+  IXFA_WidgetHandler* pWidgetHandler = GetXFAWidgetHandler(pAnnot);
+  pWidgetHandler->OnMouseEnter(pAnnot->GetXFAWidget());
+}
+
+void CPDFSDK_XFAAnnotHandler::OnMouseExit(CPDFSDK_PageView* pPageView,
+                                          CPDFSDK_Annot* pAnnot,
+                                          FX_DWORD nFlag) {
+  if (!pPageView || !pAnnot)
+    return;
+
+  IXFA_WidgetHandler* pWidgetHandler = GetXFAWidgetHandler(pAnnot);
+  pWidgetHandler->OnMouseExit(pAnnot->GetXFAWidget());
+}
+
+FX_BOOL CPDFSDK_XFAAnnotHandler::OnLButtonDown(CPDFSDK_PageView* pPageView,
+                                               CPDFSDK_Annot* pAnnot,
+                                               FX_DWORD nFlags,
+                                               const CFX_FloatPoint& point) {
+  if (!pPageView || !pAnnot)
+    return FALSE;
+
+  IXFA_WidgetHandler* pWidgetHandler = GetXFAWidgetHandler(pAnnot);
+  return pWidgetHandler->OnLButtonDown(pAnnot->GetXFAWidget(),
+                                       GetFWLFlags(nFlags), point.x, point.y);
+}
+
+FX_BOOL CPDFSDK_XFAAnnotHandler::OnLButtonUp(CPDFSDK_PageView* pPageView,
+                                             CPDFSDK_Annot* pAnnot,
+                                             FX_DWORD nFlags,
+                                             const CFX_FloatPoint& point) {
+  if (!pPageView || !pAnnot)
+    return FALSE;
+
+  IXFA_WidgetHandler* pWidgetHandler = GetXFAWidgetHandler(pAnnot);
+  return pWidgetHandler->OnLButtonUp(pAnnot->GetXFAWidget(),
+                                     GetFWLFlags(nFlags), point.x, point.y);
+}
+
+FX_BOOL CPDFSDK_XFAAnnotHandler::OnLButtonDblClk(CPDFSDK_PageView* pPageView,
+                                                 CPDFSDK_Annot* pAnnot,
+                                                 FX_DWORD nFlags,
+                                                 const CFX_FloatPoint& point) {
+  if (!pPageView || !pAnnot)
+    return FALSE;
+
+  IXFA_WidgetHandler* pWidgetHandler = GetXFAWidgetHandler(pAnnot);
+  return pWidgetHandler->OnLButtonDblClk(pAnnot->GetXFAWidget(),
+                                         GetFWLFlags(nFlags), point.x, point.y);
+}
+
+FX_BOOL CPDFSDK_XFAAnnotHandler::OnMouseMove(CPDFSDK_PageView* pPageView,
+                                             CPDFSDK_Annot* pAnnot,
+                                             FX_DWORD nFlags,
+                                             const CFX_FloatPoint& point) {
+  if (!pPageView || !pAnnot)
+    return FALSE;
+
+  IXFA_WidgetHandler* pWidgetHandler = GetXFAWidgetHandler(pAnnot);
+  return pWidgetHandler->OnMouseMove(pAnnot->GetXFAWidget(),
+                                     GetFWLFlags(nFlags), point.x, point.y);
+}
+
+FX_BOOL CPDFSDK_XFAAnnotHandler::OnMouseWheel(CPDFSDK_PageView* pPageView,
+                                              CPDFSDK_Annot* pAnnot,
+                                              FX_DWORD nFlags,
+                                              short zDelta,
+                                              const CFX_FloatPoint& point) {
+  if (!pPageView || !pAnnot)
+    return FALSE;
+
+  IXFA_WidgetHandler* pWidgetHandler = GetXFAWidgetHandler(pAnnot);
+  return pWidgetHandler->OnMouseWheel(
+      pAnnot->GetXFAWidget(), GetFWLFlags(nFlags), zDelta, point.x, point.y);
+}
+
+FX_BOOL CPDFSDK_XFAAnnotHandler::OnRButtonDown(CPDFSDK_PageView* pPageView,
+                                               CPDFSDK_Annot* pAnnot,
+                                               FX_DWORD nFlags,
+                                               const CFX_FloatPoint& point) {
+  if (!pPageView || !pAnnot)
+    return FALSE;
+
+  IXFA_WidgetHandler* pWidgetHandler = GetXFAWidgetHandler(pAnnot);
+  return pWidgetHandler->OnRButtonDown(pAnnot->GetXFAWidget(),
+                                       GetFWLFlags(nFlags), point.x, point.y);
+}
+
+FX_BOOL CPDFSDK_XFAAnnotHandler::OnRButtonUp(CPDFSDK_PageView* pPageView,
+                                             CPDFSDK_Annot* pAnnot,
+                                             FX_DWORD nFlags,
+                                             const CFX_FloatPoint& point) {
+  if (!pPageView || !pAnnot)
+    return FALSE;
+
+  IXFA_WidgetHandler* pWidgetHandler = GetXFAWidgetHandler(pAnnot);
+  return pWidgetHandler->OnRButtonUp(pAnnot->GetXFAWidget(),
+                                     GetFWLFlags(nFlags), point.x, point.y);
+}
+
+FX_BOOL CPDFSDK_XFAAnnotHandler::OnRButtonDblClk(CPDFSDK_PageView* pPageView,
+                                                 CPDFSDK_Annot* pAnnot,
+                                                 FX_DWORD nFlags,
+                                                 const CFX_FloatPoint& point) {
+  if (!pPageView || !pAnnot)
+    return FALSE;
+
+  IXFA_WidgetHandler* pWidgetHandler = GetXFAWidgetHandler(pAnnot);
+  return pWidgetHandler->OnRButtonDblClk(pAnnot->GetXFAWidget(),
+                                         GetFWLFlags(nFlags), point.x, point.y);
+}
+
+FX_BOOL CPDFSDK_XFAAnnotHandler::OnChar(CPDFSDK_Annot* pAnnot,
+                                        FX_DWORD nChar,
+                                        FX_DWORD nFlags) {
+  if (!pAnnot)
+    return FALSE;
+
+  IXFA_WidgetHandler* pWidgetHandler = GetXFAWidgetHandler(pAnnot);
+  return pWidgetHandler->OnChar(pAnnot->GetXFAWidget(), nChar,
+                                GetFWLFlags(nFlags));
+}
+
+FX_BOOL CPDFSDK_XFAAnnotHandler::OnKeyDown(CPDFSDK_Annot* pAnnot,
+                                           int nKeyCode,
+                                           int nFlag) {
+  if (!pAnnot)
+    return FALSE;
+
+  IXFA_WidgetHandler* pWidgetHandler = GetXFAWidgetHandler(pAnnot);
+  return pWidgetHandler->OnKeyDown(pAnnot->GetXFAWidget(), nKeyCode,
+                                   GetFWLFlags(nFlag));
+}
+
+FX_BOOL CPDFSDK_XFAAnnotHandler::OnKeyUp(CPDFSDK_Annot* pAnnot,
+                                         int nKeyCode,
+                                         int nFlag) {
+  if (!pAnnot)
+    return FALSE;
+
+  IXFA_WidgetHandler* pWidgetHandler = GetXFAWidgetHandler(pAnnot);
+  return pWidgetHandler->OnKeyUp(pAnnot->GetXFAWidget(), nKeyCode,
+                                 GetFWLFlags(nFlag));
+}
+
+FX_BOOL CPDFSDK_XFAAnnotHandler::OnSetFocus(CPDFSDK_Annot* pAnnot,
+                                            FX_DWORD nFlag) {
+  return TRUE;
+}
+
+FX_BOOL CPDFSDK_XFAAnnotHandler::OnKillFocus(CPDFSDK_Annot* pAnnot,
+                                             FX_DWORD nFlag) {
+  return TRUE;
+}
+
+FX_BOOL CPDFSDK_XFAAnnotHandler::OnXFAChangedFocus(CPDFSDK_Annot* pOldAnnot,
+                                                   CPDFSDK_Annot* pNewAnnot) {
+  IXFA_WidgetHandler* pWidgetHandler = NULL;
+
+  if (pOldAnnot)
+    pWidgetHandler = GetXFAWidgetHandler(pOldAnnot);
+  else if (pNewAnnot)
+    pWidgetHandler = GetXFAWidgetHandler(pNewAnnot);
+
+  if (pWidgetHandler) {
+    FX_BOOL bRet = TRUE;
+    IXFA_Widget* hWidget = pNewAnnot ? pNewAnnot->GetXFAWidget() : NULL;
+    if (hWidget) {
+      IXFA_PageView* pXFAPageView = pWidgetHandler->GetPageView(hWidget);
+      if (pXFAPageView) {
+        bRet = pXFAPageView->GetDocView()->SetFocus(hWidget);
+        if (pXFAPageView->GetDocView()->GetFocusWidget() == hWidget)
+          bRet = TRUE;
+      }
+    }
+    return bRet;
+  }
+
+  return TRUE;
+}
+
+IXFA_WidgetHandler* CPDFSDK_XFAAnnotHandler::GetXFAWidgetHandler(
+    CPDFSDK_Annot* pAnnot) {
+  if (!pAnnot)
+    return NULL;
+
+  CPDFSDK_PageView* pPageView = pAnnot->GetPageView();
+  if (!pPageView)
+    return NULL;
+
+  CPDFSDK_Document* pSDKDoc = pPageView->GetSDKDocument();
+  if (!pSDKDoc)
+    return NULL;
+
+  CPDFXFA_Document* pDoc = pSDKDoc->GetXFADocument();
+  if (!pDoc)
+    return NULL;
+
+  IXFA_DocView* pDocView = pDoc->GetXFADocView();
+  if (!pDocView)
+    return NULL;
+
+  return pDocView->GetWidgetHandler();
+}
+
+#define FWL_KEYFLAG_Ctrl (1 << 0)
+#define FWL_KEYFLAG_Alt (1 << 1)
+#define FWL_KEYFLAG_Shift (1 << 2)
+#define FWL_KEYFLAG_LButton (1 << 3)
+#define FWL_KEYFLAG_RButton (1 << 4)
+#define FWL_KEYFLAG_MButton (1 << 5)
+
+FX_DWORD CPDFSDK_XFAAnnotHandler::GetFWLFlags(FX_DWORD dwFlag) {
+  FX_DWORD dwFWLFlag = 0;
+
+  if (dwFlag & FWL_EVENTFLAG_ControlKey)
+    dwFWLFlag |= FWL_KEYFLAG_Ctrl;
+  if (dwFlag & FWL_EVENTFLAG_LeftButtonDown)
+    dwFWLFlag |= FWL_KEYFLAG_LButton;
+  if (dwFlag & FWL_EVENTFLAG_MiddleButtonDown)
+    dwFWLFlag |= FWL_KEYFLAG_MButton;
+  if (dwFlag & FWL_EVENTFLAG_RightButtonDown)
+    dwFWLFlag |= FWL_KEYFLAG_RButton;
+  if (dwFlag & FWL_EVENTFLAG_ShiftKey)
+    dwFWLFlag |= FWL_KEYFLAG_Shift;
+  if (dwFlag & FWL_EVENTFLAG_AltKey)
+    dwFWLFlag |= FWL_KEYFLAG_Alt;
+
+  return dwFWLFlag;
+}
+#endif  // PDF_ENABLE_XFA
+
+CPDFSDK_AnnotIterator::CPDFSDK_AnnotIterator(CPDFSDK_PageView* pPageView,
+                                             bool bReverse)
+    : m_bReverse(bReverse), m_pos(0) {
+  const std::vector<CPDFSDK_Annot*>& annots = pPageView->GetAnnotList();
+  m_iteratorAnnotList.insert(m_iteratorAnnotList.begin(), annots.rbegin(),
+                             annots.rend());
+  std::stable_sort(m_iteratorAnnotList.begin(), m_iteratorAnnotList.end(),
+                   [](CPDFSDK_Annot* p1, CPDFSDK_Annot* p2) {
+                     return p1->GetLayoutOrder() < p2->GetLayoutOrder();
+                   });
+
+  CPDFSDK_Annot* pTopMostAnnot = pPageView->GetFocusAnnot();
+  if (!pTopMostAnnot)
+    return;
+
+  auto it = std::find(m_iteratorAnnotList.begin(), m_iteratorAnnotList.end(),
+                      pTopMostAnnot);
+  if (it != m_iteratorAnnotList.end()) {
+    CPDFSDK_Annot* pReaderAnnot = *it;
+    m_iteratorAnnotList.erase(it);
+    m_iteratorAnnotList.insert(m_iteratorAnnotList.begin(), pReaderAnnot);
+  }
+}
+
+CPDFSDK_AnnotIterator::~CPDFSDK_AnnotIterator() {}
+
+CPDFSDK_Annot* CPDFSDK_AnnotIterator::NextAnnot() {
+  if (m_pos < m_iteratorAnnotList.size())
+    return m_iteratorAnnotList[m_pos++];
+  return nullptr;
+}
+
+CPDFSDK_Annot* CPDFSDK_AnnotIterator::PrevAnnot() {
+  if (m_pos < m_iteratorAnnotList.size())
+    return m_iteratorAnnotList[m_iteratorAnnotList.size() - ++m_pos];
+  return nullptr;
+}
+
+CPDFSDK_Annot* CPDFSDK_AnnotIterator::Next() {
+  return m_bReverse ? PrevAnnot() : NextAnnot();
+}