Move xfa/src up to xfa/.

This CL moves the xfa/src files up to the xfa/ directory and fixes the includes,
include guards, and build files.

R=tsepez@chromium.org

Review URL: https://codereview.chromium.org/1803723002 .

22 files changed, 7530 insertions, 0 deletions

diff --git a/xfa/fwl/core/fwl_appimp.cpp b/xfa/fwl/core/fwl_appimp.cpp
new file mode 100644
index 0000000000..31634860f4
--- /dev/null
+++ b/xfa/fwl/core/fwl_appimp.cpp
@@ -0,0 +1,114 @@
+// 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 "xfa/fwl/core/fwl_appimp.h"
+
+#include "xfa/fwl/core/fwl_noteimp.h"
+#include "xfa/fwl/core/fwl_targetimp.h"
+#include "xfa/fwl/core/fwl_threadimp.h"
+#include "xfa/fwl/core/fwl_widgetmgrimp.h"
+#include "xfa/include/fwl/adapter/fwl_adapterwidgetmgr.h"
+#include "xfa/include/fwl/core/fwl_app.h"
+#include "xfa/include/fwl/core/fwl_widget.h"
+
+IFWL_App* IFWL_App::Create(IFWL_AdapterNative* pAdapter) {
+  IFWL_App* pApp = new IFWL_App;
+  pApp->SetImpl(new CFWL_AppImp(pApp, pAdapter));
+  return pApp;
+}
+FWL_ERR IFWL_App::Initialize() {
+  return static_cast<CFWL_AppImp*>(GetImpl())->Initialize();
+}
+FWL_ERR IFWL_App::Finalize() {
+  return static_cast<CFWL_AppImp*>(GetImpl())->Finalize();
+}
+IFWL_AdapterNative* IFWL_App::GetAdapterNative() {
+  return static_cast<CFWL_AppImp*>(GetImpl())->GetAdapterNative();
+}
+IFWL_WidgetMgr* IFWL_App::GetWidgetMgr() {
+  return static_cast<CFWL_AppImp*>(GetImpl())->GetWidgetMgr();
+}
+IFWL_ThemeProvider* IFWL_App::GetThemeProvider() {
+  return static_cast<CFWL_AppImp*>(GetImpl())->GetThemeProvider();
+}
+FWL_ERR IFWL_App::SetThemeProvider(IFWL_ThemeProvider* pThemeProvider) {
+  return static_cast<CFWL_AppImp*>(GetImpl())->SetThemeProvider(pThemeProvider);
+}
+FWL_ERR IFWL_App::Exit(int32_t iExitCode) {
+  return static_cast<CFWL_AppImp*>(GetImpl())->Exit(iExitCode);
+}
+
+CFWL_AppImp::CFWL_AppImp(IFWL_App* pIface, IFWL_AdapterNative* pAdapter)
+    : CFWL_NoteThreadImp(pIface),
+      m_pAdapterNative(pAdapter),
+      m_pThemeProvider(nullptr) {}
+
+CFWL_AppImp::~CFWL_AppImp() {
+  CFWL_ToolTipContainer::DeleteInstance();
+}
+
+FWL_ERR CFWL_AppImp::Initialize() {
+  if (!m_pWidgetMgr) {
+    m_pWidgetMgr.reset(new CFWL_WidgetMgr(m_pAdapterNative));
+  }
+  return FWL_ERR_Succeeded;
+}
+FWL_ERR CFWL_AppImp::Finalize() {
+  m_pWidgetMgr.reset();
+  return FWL_ERR_Succeeded;
+}
+IFWL_AdapterNative* CFWL_AppImp::GetAdapterNative() const {
+  return m_pAdapterNative;
+}
+IFWL_AdapterWidgetMgr* FWL_GetAdapterWidgetMgr() {
+  return static_cast<CFWL_WidgetMgr*>(FWL_GetWidgetMgr())
+      ->GetAdapterWidgetMgr();
+}
+IFWL_WidgetMgr* CFWL_AppImp::GetWidgetMgr() const {
+  return m_pWidgetMgr.get();
+}
+FWL_ERR CFWL_AppImp::SetThemeProvider(IFWL_ThemeProvider* pThemeProvider) {
+  m_pThemeProvider = pThemeProvider;
+  return FWL_ERR_Succeeded;
+}
+FWL_ERR CFWL_AppImp::Exit(int32_t iExitCode) {
+  while (m_pNoteDriver->PopNoteLoop()) {
+    continue;
+  }
+  return m_pWidgetMgr->GetAdapterWidgetMgr()->Exit(0);
+}
+IFWL_ThemeProvider* CFWL_AppImp::GetThemeProvider() const {
+  return m_pThemeProvider;
+}
+IFWL_AdapterNative* FWL_GetAdapterNative() {
+  IFWL_App* pApp = FWL_GetApp();
+  if (!pApp)
+    return NULL;
+  return pApp->GetAdapterNative();
+}
+IFWL_ThemeProvider* FWL_GetThemeProvider() {
+  return NULL;
+}
+static IFWL_App* _theApp = NULL;
+IFWL_App* FWL_GetApp() {
+  return _theApp;
+}
+void FWL_SetApp(IFWL_App* pApp) {
+  _theApp = pApp;
+}
+FWL_ERR FWL_SetFullScreen(IFWL_Widget* pWidget, FX_BOOL bFullScreen) {
+  if (!pWidget)
+    return FWL_ERR_Succeeded;
+  IFWL_NoteThread* pNoteTread = pWidget->GetOwnerThread();
+  if (!pNoteTread)
+    return FWL_ERR_Succeeded;
+  CFWL_NoteDriver* pNoteDriver =
+      static_cast<CFWL_NoteDriver*>(pNoteTread->GetNoteDriver());
+  if (!pNoteTread)
+    return FWL_ERR_Succeeded;
+  pNoteDriver->NotifyFullScreenMode(pWidget, bFullScreen);
+  return FWL_GetAdapterWidgetMgr()->SetFullScreen(pWidget, bFullScreen);
+}
diff --git a/xfa/fwl/core/fwl_appimp.h b/xfa/fwl/core/fwl_appimp.h
new file mode 100644
index 0000000000..f9ccabf9bc
--- /dev/null
+++ b/xfa/fwl/core/fwl_appimp.h
@@ -0,0 +1,38 @@
+// Copyright 2014 PDFium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
+
+#ifndef XFA_FWL_CORE_FWL_APPIMP_H_
+#define XFA_FWL_CORE_FWL_APPIMP_H_
+
+#include <memory>
+
+#include "xfa/fwl/core/fwl_threadimp.h"
+
+class CFWL_WidgetMgr;
+class IFWL_AdapterNative;
+class IFWL_WidgetMgr;
+class IFWL_ThemeProvider;
+class IFWL_App;
+
+class CFWL_AppImp : public CFWL_NoteThreadImp {
+ public:
+  CFWL_AppImp(IFWL_App* pIface, IFWL_AdapterNative* pAdapter);
+  virtual ~CFWL_AppImp();
+  virtual FWL_ERR Initialize();
+  virtual FWL_ERR Finalize();
+  virtual IFWL_AdapterNative* GetAdapterNative() const;
+  virtual IFWL_WidgetMgr* GetWidgetMgr() const;
+  virtual IFWL_ThemeProvider* GetThemeProvider() const;
+  virtual FWL_ERR SetThemeProvider(IFWL_ThemeProvider* pThemeProvider);
+  virtual FWL_ERR Exit(int32_t iExitCode = 0);
+
+ protected:
+  IFWL_AdapterNative* const m_pAdapterNative;
+  std::unique_ptr<CFWL_WidgetMgr> m_pWidgetMgr;
+  IFWL_ThemeProvider* m_pThemeProvider;
+};
+
+#endif  // XFA_FWL_CORE_FWL_APPIMP_H_
diff --git a/xfa/fwl/core/fwl_contentimp.cpp b/xfa/fwl/core/fwl_contentimp.cpp
new file mode 100644
index 0000000000..a38998f0cf
--- /dev/null
+++ b/xfa/fwl/core/fwl_contentimp.cpp
@@ -0,0 +1,94 @@
+// 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 "xfa/fwl/core/fwl_contentimp.h"
+
+#include "xfa/fwl/core/fwl_noteimp.h"
+#include "xfa/fwl/core/fwl_targetimp.h"
+#include "xfa/fwl/core/fwl_threadimp.h"
+#include "xfa/fwl/core/fwl_widgetimp.h"
+#include "xfa/fwl/core/fwl_widgetmgrimp.h"
+#include "xfa/include/fwl/core/fwl_content.h"
+
+FWL_ERR IFWL_Content::InsertWidget(IFWL_Widget* pChild, int32_t nIndex) {
+  return static_cast<CFWL_ContentImp*>(GetImpl())->InsertWidget(pChild, nIndex);
+}
+FWL_ERR IFWL_Content::RemoveWidget(IFWL_Widget* pWidget) {
+  return static_cast<CFWL_ContentImp*>(GetImpl())->RemoveWidget(pWidget);
+}
+FWL_ERR IFWL_Content::RemoveAllWidgets() {
+  return static_cast<CFWL_ContentImp*>(GetImpl())->RemoveAllWidgets();
+}
+FWL_ERR IFWL_Content::GetMinSize(FX_FLOAT& fWidth, FX_FLOAT& fHeight) {
+  return static_cast<CFWL_ContentImp*>(GetImpl())->GetMinSize(fWidth, fHeight);
+}
+FWL_ERR IFWL_Content::SetMinSize(FX_FLOAT fWidth, FX_FLOAT fHeight) {
+  return static_cast<CFWL_ContentImp*>(GetImpl())->SetMinSize(fWidth, fHeight);
+}
+FWL_ERR IFWL_Content::GetMaxSize(FX_FLOAT& fWidth, FX_FLOAT& fHeight) {
+  return static_cast<CFWL_ContentImp*>(GetImpl())->GetMaxSize(fWidth, fHeight);
+}
+FWL_ERR IFWL_Content::SetMaxSize(FX_FLOAT fWidth, FX_FLOAT fHeight) {
+  return static_cast<CFWL_ContentImp*>(GetImpl())->SetMaxSize(fWidth, fHeight);
+}
+IFWL_Content::IFWL_Content() {}
+CFWL_ContentImp::CFWL_ContentImp(const CFWL_WidgetImpProperties& properties,
+                                 IFWL_Widget* pOuter)
+    : CFWL_WidgetImp(properties, pOuter),
+      m_fWidthMin(0),
+      m_fWidthMax(10000),
+      m_fHeightMin(0),
+      m_fHeightMax(10000) {}
+CFWL_ContentImp::~CFWL_ContentImp() {}
+FWL_ERR CFWL_ContentImp::InsertWidget(IFWL_Widget* pChild, int32_t nIndex) {
+  if (!pChild)
+    return FWL_ERR_Indefinite;
+  pChild->SetParent(m_pInterface);
+  if (nIndex == -1) {
+    return FWL_ERR_Succeeded;
+  }
+  CFWL_WidgetMgr* pMgr = static_cast<CFWL_WidgetMgr*>(FWL_GetWidgetMgr());
+  if (!pMgr)
+    return FWL_ERR_Indefinite;
+  pMgr->SetWidgetIndex(pChild, nIndex);
+  return FWL_ERR_Succeeded;
+}
+FWL_ERR CFWL_ContentImp::RemoveWidget(IFWL_Widget* pWidget) {
+  if (!pWidget)
+    return FWL_ERR_Indefinite;
+  pWidget->SetParent(NULL);
+  return FWL_ERR_Succeeded;
+}
+FWL_ERR CFWL_ContentImp::RemoveAllWidgets() {
+  CFWL_WidgetMgr* pMgr = static_cast<CFWL_WidgetMgr*>(FWL_GetWidgetMgr());
+  if (!pMgr)
+    return FWL_ERR_Indefinite;
+  while (IFWL_Widget* widget =
+             pMgr->GetWidget(m_pInterface, FWL_WGTRELATION_FirstChild)) {
+    pMgr->SetParent(NULL, widget);
+  }
+  return FWL_ERR_Succeeded;
+}
+FWL_ERR CFWL_ContentImp::GetMinSize(FX_FLOAT& fWidth, FX_FLOAT& fHeight) {
+  fWidth = m_fWidthMin;
+  fHeight = m_fHeightMin;
+  return FWL_ERR_Succeeded;
+}
+FWL_ERR CFWL_ContentImp::SetMinSize(FX_FLOAT fWidth, FX_FLOAT fHeight) {
+  m_fWidthMin = fWidth;
+  m_fHeightMin = fHeight;
+  return FWL_ERR_Succeeded;
+}
+FWL_ERR CFWL_ContentImp::GetMaxSize(FX_FLOAT& fWidth, FX_FLOAT& fHeight) {
+  fWidth = m_fWidthMax;
+  fHeight = m_fHeightMax;
+  return FWL_ERR_Succeeded;
+}
+FWL_ERR CFWL_ContentImp::SetMaxSize(FX_FLOAT fWidth, FX_FLOAT fHeight) {
+  m_fWidthMax = fWidth;
+  m_fHeightMax = fHeight;
+  return FWL_ERR_Succeeded;
+}
diff --git a/xfa/fwl/core/fwl_contentimp.h b/xfa/fwl/core/fwl_contentimp.h
new file mode 100644
index 0000000000..b7a44d3a53
--- /dev/null
+++ b/xfa/fwl/core/fwl_contentimp.h
@@ -0,0 +1,35 @@
+// Copyright 2014 PDFium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
+
+#ifndef XFA_FWL_CORE_FWL_CONTENTIMP_H_
+#define XFA_FWL_CORE_FWL_CONTENTIMP_H_
+
+#include "xfa/fwl/core/fwl_widgetimp.h"
+
+class IFWL_Widget;
+
+class CFWL_ContentImp : public CFWL_WidgetImp {
+ public:
+  CFWL_ContentImp(const CFWL_WidgetImpProperties& properties,
+                  IFWL_Widget* pOuter);
+
+  virtual ~CFWL_ContentImp();
+  virtual FWL_ERR InsertWidget(IFWL_Widget* pChild, int32_t nIndex = -1);
+  virtual FWL_ERR RemoveWidget(IFWL_Widget* pWidget);
+  virtual FWL_ERR RemoveAllWidgets();
+  FWL_ERR GetMinSize(FX_FLOAT& fWidth, FX_FLOAT& fHeight);
+  FWL_ERR SetMinSize(FX_FLOAT fWidth, FX_FLOAT fHeight);
+  FWL_ERR GetMaxSize(FX_FLOAT& fWidth, FX_FLOAT& fHeight);
+  FWL_ERR SetMaxSize(FX_FLOAT fWidth, FX_FLOAT fHeight);
+
+ protected:
+  FX_FLOAT m_fWidthMin;
+  FX_FLOAT m_fWidthMax;
+  FX_FLOAT m_fHeightMin;
+  FX_FLOAT m_fHeightMax;
+};
+
+#endif  // XFA_FWL_CORE_FWL_CONTENTIMP_H_
diff --git a/xfa/fwl/core/fwl_formimp.cpp b/xfa/fwl/core/fwl_formimp.cpp
new file mode 100644
index 0000000000..a321431f6f
--- /dev/null
+++ b/xfa/fwl/core/fwl_formimp.cpp
@@ -0,0 +1,1175 @@
+// 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 "xfa/fwl/core/fwl_formimp.h"
+
+#include "xfa/fde/tto/fde_textout.h"
+#include "xfa/fwl/basewidget/fwl_formproxyimp.h"
+#include "xfa/fwl/core/fwl_appimp.h"
+#include "xfa/fwl/core/fwl_noteimp.h"
+#include "xfa/fwl/core/fwl_panelimp.h"
+#include "xfa/fwl/core/fwl_targetimp.h"
+#include "xfa/fwl/core/fwl_threadimp.h"
+#include "xfa/fwl/core/fwl_widgetimp.h"
+#include "xfa/fwl/core/fwl_widgetmgrimp.h"
+#include "xfa/include/fwl/adapter/fwl_adapterwidgetmgr.h"
+#include "xfa/include/fwl/core/fwl_app.h"
+#include "xfa/include/fwl/core/fwl_content.h"
+#include "xfa/include/fwl/core/fwl_theme.h"
+
+#define FWL_SYSBTNSIZE 21
+#define FWL_SYSBTNMARGIN 5
+#define FWL_SYSBTNSPAN 2
+#define FWL_CornerEnlarge 10
+
+// static
+IFWL_Form* IFWL_Form::CreateFormProxy(CFWL_WidgetImpProperties& properties,
+                                      CFX_WideString* classname,
+                                      IFWL_Widget* pOuter) {
+  IFWL_Form* pForm = new IFWL_Form;
+  CFWL_FormProxyImp* pFormProxyImpl = new CFWL_FormProxyImp(properties, pOuter);
+  pForm->SetImpl(pFormProxyImpl);
+  pFormProxyImpl->SetInterface(pForm);
+  return pForm;
+}
+IFWL_Form::IFWL_Form() {}
+FWL_FORMSIZE IFWL_Form::GetFormSize() {
+  return static_cast<CFWL_FormImp*>(GetImpl())->GetFormSize();
+}
+FWL_ERR IFWL_Form::SetFormSize(FWL_FORMSIZE eFormSize) {
+  return static_cast<CFWL_FormImp*>(GetImpl())->SetFormSize(eFormSize);
+}
+IFWL_Widget* IFWL_Form::DoModal() {
+  return static_cast<CFWL_FormImp*>(GetImpl())->DoModal();
+}
+IFWL_Widget* IFWL_Form::DoModal(FX_DWORD& dwCommandID) {
+  return static_cast<CFWL_FormImp*>(GetImpl())->DoModal(dwCommandID);
+}
+FWL_ERR IFWL_Form::EndDoModal() {
+  return static_cast<CFWL_FormImp*>(GetImpl())->EndDoModal();
+}
+FWL_ERR IFWL_Form::SetBorderRegion(CFX_Path* pPath) {
+  return static_cast<CFWL_FormImp*>(GetImpl())->SetBorderRegion(pPath);
+}
+
+CFWL_FormImp::CFWL_FormImp(const CFWL_WidgetImpProperties& properties,
+                           IFWL_Widget* pOuter)
+    : CFWL_PanelImp(properties, pOuter),
+      m_pCloseBox(NULL),
+      m_pMinBox(NULL),
+      m_pMaxBox(NULL),
+      m_pCaptionBox(NULL),
+      m_pNoteLoop(NULL),
+      m_pSubFocus(NULL),
+      m_fCXBorder(0),
+      m_fCYBorder(0),
+      m_iCaptureBtn(-1),
+      m_iSysBox(0),
+      m_eResizeType(FORM_RESIZETYPE_None),
+      m_bLButtonDown(FALSE),
+      m_bMaximized(FALSE),
+      m_bSetMaximize(FALSE),
+      m_bCustomizeLayout(FALSE),
+      m_eFormSize(FWL_FORMSIZE_Manual),
+      m_bDoModalFlag(FALSE),
+      m_pBigIcon(NULL),
+      m_pSmallIcon(NULL),
+      m_bMouseIn(FALSE) {
+  m_rtRelative.Reset();
+  m_rtCaption.Reset();
+  m_rtRestore.Reset();
+  m_rtCaptionText.Reset();
+  m_rtIcon.Reset();
+}
+CFWL_FormImp::~CFWL_FormImp() {
+  RemoveSysButtons();
+  delete m_pNoteLoop;
+}
+FWL_ERR CFWL_FormImp::GetClassName(CFX_WideString& wsClass) const {
+  wsClass = FWL_CLASS_Form;
+  return FWL_ERR_Succeeded;
+}
+FX_DWORD CFWL_FormImp::GetClassID() const {
+  return FWL_CLASSHASH_Form;
+}
+FX_BOOL CFWL_FormImp::IsInstance(const CFX_WideStringC& wsClass) const {
+  if (wsClass == CFX_WideStringC(FWL_CLASS_Form)) {
+    return TRUE;
+  }
+  return CFWL_PanelImp::IsInstance(wsClass);
+}
+FWL_ERR CFWL_FormImp::Initialize() {
+  if (CFWL_WidgetImp::Initialize() != FWL_ERR_Succeeded)
+    return FWL_ERR_Indefinite;
+  RegisterForm();
+  RegisterEventTarget();
+  m_pDelegate = new CFWL_FormImpDelegate(this);
+  return FWL_ERR_Succeeded;
+}
+FWL_ERR CFWL_FormImp::Finalize() {
+  delete m_pDelegate;
+  m_pDelegate = nullptr;
+  UnregisterEventTarget();
+  UnRegisterForm();
+  return CFWL_WidgetImp::Finalize();
+}
+FWL_ERR CFWL_FormImp::GetWidgetRect(CFX_RectF& rect, FX_BOOL bAutoSize) {
+  if (bAutoSize) {
+    rect.Reset();
+    FX_FLOAT fCapHeight = GetCaptionHeight();
+    FX_FLOAT fCXBorder = GetBorderSize(TRUE);
+    FX_FLOAT fCYBorder = GetBorderSize(FALSE);
+    FX_FLOAT fEdge = GetEdgeWidth();
+    if (m_pContent) {
+      m_pContent->GetWidgetRect(rect, TRUE);
+    }
+    rect.height += fCapHeight + fCYBorder + fEdge + fEdge;
+    rect.width += fCXBorder + fCXBorder + fEdge + fEdge;
+  } else {
+    rect = m_pProperties->m_rtWidget;
+  }
+  return FWL_ERR_Succeeded;
+}
+FWL_ERR CFWL_FormImp::GetClientRect(CFX_RectF& rect) {
+  if ((m_pProperties->m_dwStyles & FWL_WGTSTYLE_Caption) == 0) {
+    rect = m_pProperties->m_rtWidget;
+    rect.Offset(-rect.left, -rect.top);
+    return FWL_ERR_Succeeded;
+  }
+#ifdef FWL_UseMacSystemBorder
+  rect = m_rtRelative;
+  CFWL_WidgetMgr* pWidgetMgr = static_cast<CFWL_WidgetMgr*>(FWL_GetWidgetMgr());
+  if (!pWidgetMgr)
+    return FWL_ERR_Indefinite;
+  IFWL_AdapterWidgetMgr* adapterWidgetMgr = pWidgetMgr->GetAdapterWidgetMgr();
+  FX_FLOAT l, t, r, b;
+  l = t = r = b = 0;
+  adapterWidgetMgr->GetSystemBorder(l, t, r, b);
+  rect.Deflate(l, t, r, b);
+  rect.left = rect.top = 0;
+  return FWL_ERR_Succeeded;
+#else
+  FX_FLOAT x = 0;
+  FX_FLOAT y = 0;
+  FX_FLOAT t = 0;
+  IFWL_ThemeProvider* pTheme = m_pProperties->m_pThemeProvider;
+  if (pTheme) {
+    CFWL_ThemePart part;
+    part.m_pWidget = m_pInterface;
+    x = *static_cast<FX_FLOAT*>(
+        pTheme->GetCapacity(&part, FWL_WGTCAPACITY_CXBorder));
+    y = *static_cast<FX_FLOAT*>(
+        pTheme->GetCapacity(&part, FWL_WGTCAPACITY_CYBorder));
+    t = *static_cast<FX_FLOAT*>(
+        pTheme->GetCapacity(&part, FWL_WGTCAPACITY_FRM_CYCaption));
+  }
+  rect = m_pProperties->m_rtWidget;
+  rect.Offset(-rect.left, -rect.top);
+  rect.Deflate(x, t, x, y);
+  return FWL_ERR_Succeeded;
+#endif
+}
+FWL_ERR CFWL_FormImp::Update() {
+  if (m_iLock > 0) {
+    return FWL_ERR_Succeeded;
+  }
+  if (!m_pProperties->m_pThemeProvider) {
+    m_pProperties->m_pThemeProvider = GetAvailableTheme();
+  }
+#ifdef FWL_UseMacSystemBorder
+#else
+  SetThemeData();
+  if (m_pProperties->m_dwStyles & FWL_WGTSTYLE_Icon) {
+    UpdateIcon();
+  }
+#endif
+  UpdateCaption();
+  Layout();
+  return FWL_ERR_Succeeded;
+}
+FX_DWORD CFWL_FormImp::HitTest(FX_FLOAT fx, FX_FLOAT fy) {
+  (void)GetAvailableTheme();
+  if (m_pCloseBox && m_pCloseBox->m_rtBtn.Contains(fx, fy)) {
+    return FWL_WGTHITTEST_CloseBox;
+  }
+  if (m_pMaxBox && m_pMaxBox->m_rtBtn.Contains(fx, fy)) {
+    return FWL_WGTHITTEST_MaxBox;
+  }
+  if (m_pMinBox && m_pMinBox->m_rtBtn.Contains(fx, fy)) {
+    return FWL_WGTHITTEST_MinBox;
+  }
+  CFX_RectF rtCap;
+  rtCap.Set(m_rtCaption.left + m_fCYBorder, m_rtCaption.top + m_fCXBorder,
+            m_rtCaption.width - FWL_SYSBTNSIZE * m_iSysBox - 2 * m_fCYBorder,
+            m_rtCaption.height - m_fCXBorder);
+  if (rtCap.Contains(fx, fy)) {
+    return FWL_WGTHITTEST_Titlebar;
+  }
+  if ((m_pProperties->m_dwStyles & FWL_WGTSTYLE_Border) &&
+      (m_pProperties->m_dwStyleExes & FWL_STYLEEXT_FRM_Resize)) {
+    FX_FLOAT fWidth =
+        m_rtRelative.width - 2 * (m_fCYBorder + FWL_CornerEnlarge);
+    FX_FLOAT fHeight =
+        m_rtRelative.height - 2 * (m_fCXBorder + FWL_CornerEnlarge);
+    CFX_RectF rt;
+    rt.Set(0, m_fCXBorder + FWL_CornerEnlarge, m_fCYBorder, fHeight);
+    if (rt.Contains(fx, fy)) {
+      return FWL_WGTHITTEST_Left;
+    }
+    rt.Set(m_rtRelative.width - m_fCYBorder, m_fCXBorder + FWL_CornerEnlarge,
+           m_fCYBorder, fHeight);
+    if (rt.Contains(fx, fy)) {
+      return FWL_WGTHITTEST_Right;
+    }
+    rt.Set(m_fCYBorder + FWL_CornerEnlarge, 0, fWidth, m_fCXBorder);
+    if (rt.Contains(fx, fy)) {
+      return FWL_WGTHITTEST_Top;
+    }
+    rt.Set(m_fCYBorder + FWL_CornerEnlarge, m_rtRelative.height - m_fCXBorder,
+           fWidth, m_fCXBorder);
+    if (rt.Contains(fx, fy)) {
+      return FWL_WGTHITTEST_Bottom;
+    }
+    rt.Set(0, 0, m_fCYBorder + FWL_CornerEnlarge,
+           m_fCXBorder + FWL_CornerEnlarge);
+    if (rt.Contains(fx, fy)) {
+      return FWL_WGTHITTEST_LeftTop;
+    }
+    rt.Set(0, m_rtRelative.height - m_fCXBorder - FWL_CornerEnlarge,
+           m_fCYBorder + FWL_CornerEnlarge, m_fCXBorder + FWL_CornerEnlarge);
+    if (rt.Contains(fx, fy)) {
+      return FWL_WGTHITTEST_LeftBottom;
+    }
+    rt.Set(m_rtRelative.width - m_fCYBorder - FWL_CornerEnlarge, 0,
+           m_fCYBorder + FWL_CornerEnlarge, m_fCXBorder + FWL_CornerEnlarge);
+    if (rt.Contains(fx, fy)) {
+      return FWL_WGTHITTEST_RightTop;
+    }
+    rt.Set(m_rtRelative.width - m_fCYBorder - FWL_CornerEnlarge,
+           m_rtRelative.height - m_fCXBorder - FWL_CornerEnlarge,
+           m_fCYBorder + FWL_CornerEnlarge, m_fCXBorder + FWL_CornerEnlarge);
+    if (rt.Contains(fx, fy)) {
+      return FWL_WGTHITTEST_RightBottom;
+    }
+  }
+  return FWL_WGTHITTEST_Client;
+}
+FWL_ERR CFWL_FormImp::DrawWidget(CFX_Graphics* pGraphics,
+                                 const CFX_Matrix* pMatrix) {
+  if (!pGraphics)
+    return FWL_ERR_Indefinite;
+  if (!m_pProperties->m_pThemeProvider)
+    return FWL_ERR_Indefinite;
+  IFWL_ThemeProvider* pTheme = m_pProperties->m_pThemeProvider;
+  FX_BOOL bInactive = !IsActive();
+  int32_t iState =
+      bInactive ? FWL_PARTSTATE_FRM_Inactive : FWL_PARTSTATE_FRM_Normal;
+  if ((m_pProperties->m_dwStyleExes & FWL_STYLEEXT_FRM_NoDrawClient) == 0) {
+    DrawBackground(pGraphics, pTheme);
+  }
+#ifdef FWL_UseMacSystemBorder
+  return FWL_ERR_Succeeded;
+#endif
+  CFWL_ThemeBackground param;
+  param.m_pWidget = m_pInterface;
+  param.m_dwStates = iState;
+  param.m_pGraphics = pGraphics;
+  param.m_rtPart = m_rtRelative;
+  if (pMatrix) {
+    param.m_matrix.Concat(*pMatrix);
+  }
+  if (m_pProperties->m_dwStyles & FWL_WGTSTYLE_Border) {
+    param.m_iPart = FWL_PART_FRM_Border;
+    pTheme->DrawBackground(&param);
+  }
+  if ((m_pProperties->m_dwStyleExes & FWL_WGTSTYLE_EdgeMask) !=
+      FWL_WGTSTYLE_EdgeNone) {
+    CFX_RectF rtEdge;
+    GetEdgeRect(rtEdge);
+    param.m_iPart = FWL_PART_FRM_Edge;
+    param.m_rtPart = rtEdge;
+    param.m_dwStates = iState;
+    pTheme->DrawBackground(&param);
+  }
+  if (m_pProperties->m_dwStyles & FWL_WGTSTYLE_Caption) {
+    param.m_iPart = FWL_PART_FRM_Caption;
+    param.m_dwStates = iState;
+    param.m_rtPart = m_rtCaption;
+    pTheme->DrawBackground(&param);
+    DrawCaptionText(pGraphics, pTheme, pMatrix);
+  } else if (m_pProperties->m_dwStyles & FWL_WGTSTYLE_NarrowCaption) {
+    param.m_iPart = FWL_PART_FRM_NarrowCaption;
+    param.m_dwStates = iState;
+    param.m_rtPart = m_rtCaption;
+    pTheme->DrawBackground(&param);
+    DrawCaptionText(pGraphics, pTheme, pMatrix);
+  }
+  if (m_pProperties->m_dwStyles & FWL_WGTSTYLE_Icon) {
+    param.m_iPart = FWL_PART_FRM_Icon;
+    if (HasIcon()) {
+      DrawIconImage(pGraphics, pTheme, pMatrix);
+    }
+  }
+#if (_FX_OS_ == _FX_MACOSX_)
+  {
+    if (m_pCloseBox) {
+      param.m_iPart = FWL_PART_FRM_CloseBox;
+      param.m_dwStates = m_pCloseBox->GetPartState();
+      if (m_pProperties->m_dwStates & FWL_WGTSTATE_Deactivated) {
+        param.m_dwStates = FWL_PARTSTATE_FRM_Disabled;
+      } else if (FWL_PARTSTATE_FRM_Normal == param.m_dwStates && m_bMouseIn) {
+        param.m_dwStates = FWL_PARTSTATE_FRM_Hover;
+      }
+      param.m_rtPart = m_pCloseBox->m_rtBtn;
+      pTheme->DrawBackground(&param);
+    }
+    if (m_pMaxBox) {
+      param.m_iPart = FWL_PART_FRM_MaximizeBox;
+      param.m_dwStates = m_pMaxBox->GetPartState();
+      if (m_pProperties->m_dwStates & FWL_WGTSTATE_Deactivated) {
+        param.m_dwStates = FWL_PARTSTATE_FRM_Disabled;
+      } else if (FWL_PARTSTATE_FRM_Normal == param.m_dwStates && m_bMouseIn) {
+        param.m_dwStates = FWL_PARTSTATE_FRM_Hover;
+      }
+      param.m_rtPart = m_pMaxBox->m_rtBtn;
+      param.m_dwData = m_bMaximized;
+      pTheme->DrawBackground(&param);
+    }
+    if (m_pMinBox) {
+      param.m_iPart = FWL_PART_FRM_MinimizeBox;
+      param.m_dwStates = m_pMinBox->GetPartState();
+      if (m_pProperties->m_dwStates & FWL_WGTSTATE_Deactivated) {
+        param.m_dwStates = FWL_PARTSTATE_FRM_Disabled;
+      } else if (FWL_PARTSTATE_FRM_Normal == param.m_dwStates && m_bMouseIn) {
+        param.m_dwStates = FWL_PARTSTATE_FRM_Hover;
+      }
+      param.m_rtPart = m_pMinBox->m_rtBtn;
+      pTheme->DrawBackground(&param);
+    }
+    m_bMouseIn = FALSE;
+  }
+#else
+  {
+    if (m_pCloseBox) {
+      param.m_iPart = FWL_PART_FRM_CloseBox;
+      param.m_dwStates = m_pCloseBox->GetPartState();
+      param.m_rtPart = m_pCloseBox->m_rtBtn;
+      pTheme->DrawBackground(&param);
+    }
+    if (m_pMaxBox) {
+      param.m_iPart = FWL_PART_FRM_MaximizeBox;
+      param.m_dwStates = m_pMaxBox->GetPartState();
+      param.m_rtPart = m_pMaxBox->m_rtBtn;
+      param.m_dwData = m_bMaximized;
+      pTheme->DrawBackground(&param);
+    }
+    if (m_pMinBox) {
+      param.m_iPart = FWL_PART_FRM_MinimizeBox;
+      param.m_dwStates = m_pMinBox->GetPartState();
+      param.m_rtPart = m_pMinBox->m_rtBtn;
+      pTheme->DrawBackground(&param);
+    }
+  }
+#endif
+  return FWL_ERR_Succeeded;
+}
+FWL_FORMSIZE CFWL_FormImp::GetFormSize() {
+  return m_eFormSize;
+}
+FWL_ERR CFWL_FormImp::SetFormSize(FWL_FORMSIZE eFormSize) {
+  m_eFormSize = eFormSize;
+  return FWL_ERR_Succeeded;
+}
+IFWL_Widget* CFWL_FormImp::DoModal() {
+  IFWL_NoteThread* pThread = GetOwnerThread();
+  if (!pThread)
+    return NULL;
+  IFWL_NoteDriver* pDriver = pThread->GetNoteDriver();
+  if (!pDriver)
+    return NULL;
+  m_pNoteLoop = new CFWL_NoteLoop(this);
+  pDriver->PushNoteLoop(m_pNoteLoop);
+  m_bDoModalFlag = TRUE;
+  SetStates(FWL_WGTSTATE_Invisible, FALSE);
+  pDriver->Run();
+#if (_FX_OS_ == _FX_MACOSX_)
+#else
+  pDriver->PopNoteLoop();
+#endif
+  delete m_pNoteLoop;
+  m_pNoteLoop = NULL;
+  return NULL;
+}
+IFWL_Widget* CFWL_FormImp::DoModal(FX_DWORD& dwCommandID) {
+  return DoModal();
+}
+FWL_ERR CFWL_FormImp::EndDoModal() {
+  if (!m_pNoteLoop)
+    return FWL_ERR_Indefinite;
+  m_bDoModalFlag = FALSE;
+#if (_FX_OS_ == _FX_MACOSX_)
+  m_pNoteLoop->EndModalLoop();
+  IFWL_NoteThread* pThread = GetOwnerThread();
+  if (!pThread)
+    return FWL_ERR_Indefinite;
+  CFWL_NoteDriver* pDriver =
+      static_cast<CFWL_NoteDriver*>(pThread->GetNoteDriver());
+  if (!pDriver)
+    return FWL_ERR_Indefinite;
+  pDriver->PopNoteLoop();
+  SetStates(FWL_WGTSTATE_Invisible, TRUE);
+  return FWL_ERR_Succeeded;
+#else
+  SetStates(FWL_WGTSTATE_Invisible, TRUE);
+  return m_pNoteLoop->EndModalLoop();
+#endif
+}
+FWL_ERR CFWL_FormImp::SetBorderRegion(CFX_Path* pPath) {
+  return FWL_ERR_Succeeded;
+}
+void CFWL_FormImp::DrawBackground(CFX_Graphics* pGraphics,
+                                  IFWL_ThemeProvider* pTheme) {
+  CFWL_ThemeBackground param;
+  param.m_pWidget = m_pInterface;
+  param.m_iPart = FWL_PART_FRM_Background;
+  param.m_pGraphics = pGraphics;
+  param.m_rtPart = m_rtRelative;
+  param.m_rtPart.Deflate(m_fCYBorder, m_rtCaption.height, m_fCYBorder,
+                         m_fCXBorder);
+  pTheme->DrawBackground(&param);
+}
+CFWL_WidgetImp* CFWL_FormImp::GetSubFocus() {
+  return m_pSubFocus;
+}
+void CFWL_FormImp::SetSubFocus(CFWL_WidgetImp* pWidget) {
+  m_pSubFocus = pWidget;
+}
+CFX_MapAccelerators& CFWL_FormImp::GetAccelerator() {
+  return m_mapAccelerators;
+}
+void CFWL_FormImp::SetAccelerator(CFX_MapAccelerators* pAccelerators) {
+  if (!pAccelerators)
+    return;
+  m_mapAccelerators.RemoveAll();
+  FX_DWORD vrKey, rValue;
+  FX_POSITION pos = pAccelerators->GetStartPosition();
+  while (pos) {
+    pAccelerators->GetNextAssoc(pos, vrKey, rValue);
+    m_mapAccelerators.SetAt(vrKey, rValue);
+  }
+}
+void CFWL_FormImp::ShowChildWidget(IFWL_Widget* pParent) {
+  IFWL_App* pApp = FWL_GetApp();
+  if (!pApp)
+    return;
+  CFWL_WidgetMgr* pWidgetMgr =
+      static_cast<CFWL_WidgetMgr*>(pApp->GetWidgetMgr());
+  if (!pWidgetMgr)
+    return;
+  IFWL_Widget* pChild =
+      pWidgetMgr->GetWidget(pParent, FWL_WGTRELATION_FirstChild);
+  while (pChild) {
+    pWidgetMgr->ShowWidget_Native(pChild);
+    ShowChildWidget(pChild);
+    pChild = pWidgetMgr->GetWidget(pChild, FWL_WGTRELATION_NextSibling);
+  }
+}
+void CFWL_FormImp::RemoveSysButtons() {
+  m_rtCaption.Reset();
+  if (m_pCloseBox) {
+    delete m_pCloseBox;
+    m_pCloseBox = NULL;
+  }
+  if (m_pMinBox) {
+    delete m_pMinBox;
+    m_pMinBox = NULL;
+  }
+  if (m_pMaxBox) {
+    delete m_pMaxBox;
+    m_pMaxBox = NULL;
+  }
+  if (m_pCaptionBox) {
+    delete m_pCaptionBox;
+    m_pCaptionBox = NULL;
+  }
+}
+void CFWL_FormImp::CalcContentRect(CFX_RectF& rtContent) {
+#ifdef FWL_UseMacSystemBorder
+  rtContent = m_rtRelative;
+#else
+  GetEdgeRect(rtContent);
+  if (HasEdge()) {
+    FX_FLOAT fEdge = GetEdgeWidth();
+    rtContent.Deflate(fEdge, fEdge);
+  }
+#endif
+}
+CFWL_SysBtn* CFWL_FormImp::GetSysBtnAtPoint(FX_FLOAT fx, FX_FLOAT fy) {
+  if (m_pCloseBox && m_pCloseBox->m_rtBtn.Contains(fx, fy)) {
+    return m_pCloseBox;
+  }
+  if (m_pMaxBox && m_pMaxBox->m_rtBtn.Contains(fx, fy)) {
+    return m_pMaxBox;
+  }
+  if (m_pMinBox && m_pMinBox->m_rtBtn.Contains(fx, fy)) {
+    return m_pMinBox;
+  }
+  if (m_pCaptionBox && m_pCaptionBox->m_rtBtn.Contains(fx, fy)) {
+    return m_pCaptionBox;
+  }
+  return NULL;
+}
+CFWL_SysBtn* CFWL_FormImp::GetSysBtnByState(FX_DWORD dwState) {
+  if (m_pCloseBox && (m_pCloseBox->m_dwState & dwState)) {
+    return m_pCloseBox;
+  }
+  if (m_pMaxBox && (m_pMaxBox->m_dwState & dwState)) {
+    return m_pMaxBox;
+  }
+  if (m_pMinBox && (m_pMinBox->m_dwState & dwState)) {
+    return m_pMinBox;
+  }
+  if (m_pCaptionBox && (m_pCaptionBox->m_dwState & dwState)) {
+    return m_pCaptionBox;
+  }
+  return NULL;
+}
+CFWL_SysBtn* CFWL_FormImp::GetSysBtnByIndex(int32_t nIndex) {
+  if (nIndex < 0) {
+    return NULL;
+  }
+  CFX_PtrArray arrBtn;
+  if (m_pMinBox) {
+    arrBtn.Add(m_pMinBox);
+  }
+  if (m_pMaxBox) {
+    arrBtn.Add(m_pMaxBox);
+  }
+  if (m_pCloseBox) {
+    arrBtn.Add(m_pCloseBox);
+  }
+  return static_cast<CFWL_SysBtn*>(arrBtn[nIndex]);
+}
+int32_t CFWL_FormImp::GetSysBtnIndex(CFWL_SysBtn* pBtn) {
+  CFX_PtrArray arrBtn;
+  if (m_pMinBox) {
+    arrBtn.Add(m_pMinBox);
+  }
+  if (m_pMaxBox) {
+    arrBtn.Add(m_pMaxBox);
+  }
+  if (m_pCloseBox) {
+    arrBtn.Add(m_pCloseBox);
+  }
+  return arrBtn.Find(pBtn);
+}
+FX_FLOAT CFWL_FormImp::GetCaptionHeight() {
+  FX_DWORD dwCapacity = 0;
+  if (m_pProperties->m_dwStyles & FWL_WGTSTYLE_Caption) {
+    dwCapacity = FWL_WGTCAPACITY_FRM_CYCaption;
+  } else if (m_pProperties->m_dwStyles & FWL_WGTSTYLE_NarrowCaption) {
+    dwCapacity = FWL_WGTCAPACITY_FRM_CYNarrowCaption;
+  }
+  if (dwCapacity > 0) {
+    FX_FLOAT* pfCapHeight =
+        static_cast<FX_FLOAT*>(GetThemeCapacity(dwCapacity));
+    return pfCapHeight ? *pfCapHeight : 0;
+  }
+  return 0;
+}
+void CFWL_FormImp::DrawCaptionText(CFX_Graphics* pGs,
+                                   IFWL_ThemeProvider* pTheme,
+                                   const CFX_Matrix* pMatrix) {
+  CFX_WideString wsText;
+  IFWL_DataProvider* pData = m_pProperties->m_pDataProvider;
+  pData->GetCaption(m_pInterface, wsText);
+  if (wsText.IsEmpty()) {
+    return;
+  }
+  CFWL_ThemeText textParam;
+  textParam.m_pWidget = m_pInterface;
+  textParam.m_iPart = FWL_PART_FRM_Caption;
+  textParam.m_dwStates = FWL_PARTSTATE_FRM_Normal;
+  textParam.m_pGraphics = pGs;
+  if (pMatrix) {
+    textParam.m_matrix.Concat(*pMatrix);
+  }
+  CFX_RectF rtText;
+  if (m_bCustomizeLayout) {
+    rtText = m_rtCaptionText;
+    rtText.top -= 5;
+  } else {
+    rtText = m_rtCaption;
+    FX_FLOAT fpos;
+    fpos = HasIcon() ? 29.0f : 13.0f;
+    rtText.left += fpos;
+  }
+  textParam.m_rtPart = rtText;
+  textParam.m_wsText = wsText;
+  textParam.m_dwTTOStyles = FDE_TTOSTYLE_SingleLine | FDE_TTOSTYLE_Ellipsis;
+  textParam.m_iTTOAlign = m_bCustomizeLayout ? FDE_TTOALIGNMENT_Center
+                                             : FDE_TTOALIGNMENT_CenterLeft;
+  pTheme->DrawText(&textParam);
+}
+void CFWL_FormImp::DrawIconImage(CFX_Graphics* pGs,
+                                 IFWL_ThemeProvider* pTheme,
+                                 const CFX_Matrix* pMatrix) {
+  IFWL_FormDP* pData =
+      static_cast<IFWL_FormDP*>(m_pProperties->m_pDataProvider);
+  CFWL_ThemeBackground param;
+  param.m_pWidget = m_pInterface;
+  param.m_iPart = FWL_PART_FRM_Icon;
+  param.m_pGraphics = pGs;
+  param.m_pImage = pData->GetIcon(m_pInterface, FALSE);
+  param.m_rtPart = m_rtIcon;
+  if (pMatrix) {
+    param.m_matrix.Concat(*pMatrix);
+  }
+  pTheme->DrawBackground(&param);
+}
+void CFWL_FormImp::GetEdgeRect(CFX_RectF& rtEdge) {
+  rtEdge = m_rtRelative;
+  if (m_pProperties->m_dwStyles & FWL_WGTSTYLE_Border) {
+    FX_FLOAT fCX = GetBorderSize();
+    FX_FLOAT fCY = GetBorderSize(FALSE);
+    rtEdge.Deflate(fCX, m_rtCaption.Height(), fCX, fCY);
+  }
+}
+void CFWL_FormImp::SetWorkAreaRect() {
+  m_rtRestore = m_pProperties->m_rtWidget;
+  CFWL_WidgetMgr* pWidgetMgr = static_cast<CFWL_WidgetMgr*>(FWL_GetWidgetMgr());
+  if (!pWidgetMgr)
+    return;
+  m_bSetMaximize = TRUE;
+  pWidgetMgr->SetMaximize_Native(m_pInterface);
+  Repaint(&m_rtRelative);
+}
+void CFWL_FormImp::SetCursor(FX_FLOAT fx, FX_FLOAT fy) {}
+void CFWL_FormImp::Layout() {
+  GetRelativeRect(m_rtRelative);
+#ifndef FWL_UseMacSystemBorder
+  ReSetSysBtn();
+#endif
+  if (m_pContent) {
+    CFX_RectF rtClient;
+    GetClientRect(rtClient);
+    m_pContent->SetWidgetRect(rtClient);
+    m_pContent->Update();
+  }
+}
+void CFWL_FormImp::ReSetSysBtn() {
+  m_fCXBorder =
+      *static_cast<FX_FLOAT*>(GetThemeCapacity(FWL_WGTCAPACITY_CXBorder));
+  m_fCYBorder =
+      *static_cast<FX_FLOAT*>(GetThemeCapacity(FWL_WGTCAPACITY_CYBorder));
+  RemoveSysButtons();
+  IFWL_ThemeProvider* pTheme = m_pProperties->m_pThemeProvider;
+  m_bCustomizeLayout = pTheme->IsCustomizedLayout(m_pInterface);
+  FX_FLOAT fCapHeight = GetCaptionHeight();
+  if (fCapHeight > 0) {
+    m_rtCaption = m_rtRelative;
+    m_rtCaption.height = fCapHeight;
+  }
+  m_iSysBox = 0;
+  if (m_pProperties->m_dwStyles & FWL_WGTSTYLE_CloseBox) {
+    m_pCloseBox = new CFWL_SysBtn;
+    if (m_bCustomizeLayout) {
+      CFWL_ThemeBackground param;
+      param.m_pWidget = m_pInterface;
+      param.m_iPart = FWL_PART_FRM_CloseBox;
+      pTheme->GetPartRect(&param, m_pCloseBox->m_rtBtn);
+    } else {
+      m_pCloseBox->m_rtBtn.Set(
+          m_rtRelative.right() - FWL_SYSBTNMARGIN - FWL_SYSBTNSIZE,
+          FWL_SYSBTNMARGIN, FWL_SYSBTNSIZE, FWL_SYSBTNSIZE);
+    }
+    m_iSysBox++;
+  }
+  if (m_pProperties->m_dwStyles & FWL_WGTSTYLE_MaximizeBox) {
+    m_pMaxBox = new CFWL_SysBtn;
+    if (m_bCustomizeLayout) {
+      CFWL_ThemeBackground param;
+      param.m_pWidget = m_pInterface;
+      param.m_iPart = FWL_PART_FRM_MaximizeBox;
+      pTheme->GetPartRect(&param, m_pMaxBox->m_rtBtn);
+    } else {
+      if (m_pCloseBox) {
+        m_pMaxBox->m_rtBtn.Set(
+            m_pCloseBox->m_rtBtn.left - FWL_SYSBTNSPAN - FWL_SYSBTNSIZE,
+            m_pCloseBox->m_rtBtn.top, FWL_SYSBTNSIZE, FWL_SYSBTNSIZE);
+      } else {
+        m_pMaxBox->m_rtBtn.Set(
+            m_rtRelative.right() - FWL_SYSBTNMARGIN - FWL_SYSBTNSIZE,
+            FWL_SYSBTNMARGIN, FWL_SYSBTNSIZE, FWL_SYSBTNSIZE);
+      }
+    }
+    m_iSysBox++;
+  }
+  if (m_pProperties->m_dwStyles & FWL_WGTSTYLE_MinimizeBox) {
+    m_pMinBox = new CFWL_SysBtn;
+    if (m_bCustomizeLayout) {
+      CFWL_ThemeBackground param;
+      param.m_pWidget = m_pInterface;
+      param.m_iPart = FWL_PART_FRM_MinimizeBox;
+      pTheme->GetPartRect(&param, m_pMinBox->m_rtBtn);
+    } else {
+      if (m_pMaxBox) {
+        m_pMinBox->m_rtBtn.Set(
+            m_pMaxBox->m_rtBtn.left - FWL_SYSBTNSPAN - FWL_SYSBTNSIZE,
+            m_pMaxBox->m_rtBtn.top, FWL_SYSBTNSIZE, FWL_SYSBTNSIZE);
+      } else if (m_pCloseBox) {
+        m_pMinBox->m_rtBtn.Set(
+            m_pCloseBox->m_rtBtn.left - FWL_SYSBTNSPAN - FWL_SYSBTNSIZE,
+            m_pCloseBox->m_rtBtn.top, FWL_SYSBTNSIZE, FWL_SYSBTNSIZE);
+      } else {
+        m_pMinBox->m_rtBtn.Set(
+            m_rtRelative.right() - FWL_SYSBTNMARGIN - FWL_SYSBTNSIZE,
+            FWL_SYSBTNMARGIN, FWL_SYSBTNSIZE, FWL_SYSBTNSIZE);
+      }
+    }
+    m_iSysBox++;
+  }
+  IFWL_FormDP* pData =
+      static_cast<IFWL_FormDP*>(m_pProperties->m_pDataProvider);
+  if (m_pProperties->m_dwStyles & FWL_WGTSTYLE_Icon &&
+      pData->GetIcon(m_pInterface, FALSE)) {
+    if (m_bCustomizeLayout) {
+      CFWL_ThemeBackground param;
+      param.m_pWidget = m_pInterface;
+      param.m_iPart = FWL_PART_FRM_Icon;
+      CFX_WideString wsText;
+      m_pProperties->m_pDataProvider->GetCaption(m_pInterface, wsText);
+      param.m_pData = &wsText;
+      pTheme->GetPartRect(&param, m_rtIcon);
+    } else {
+      m_rtIcon.Set(5, (m_rtCaption.height - m_fSmallIconSz) / 2, m_fSmallIconSz,
+                   m_fSmallIconSz);
+    }
+  }
+  if (m_bCustomizeLayout) {
+    CFWL_ThemeText parma;
+    parma.m_pWidget = m_pInterface;
+    parma.m_iPart = FWL_PART_FRM_HeadText;
+    m_pProperties->m_pDataProvider->GetCaption(m_pInterface, parma.m_wsText);
+    pTheme->GetPartRect(&parma, m_rtCaptionText);
+  }
+}
+void CFWL_FormImp::RegisterForm() {
+  IFWL_NoteThread* pThread = GetOwnerThread();
+  if (!pThread)
+    return;
+  CFWL_NoteDriver* pDriver =
+      static_cast<CFWL_NoteDriver*>(pThread->GetNoteDriver());
+  if (!pDriver)
+    return;
+  pDriver->RegisterForm(this);
+}
+void CFWL_FormImp::UnRegisterForm() {
+  IFWL_NoteThread* pThread = GetOwnerThread();
+  if (!pThread)
+    return;
+  CFWL_NoteDriver* pDriver =
+      static_cast<CFWL_NoteDriver*>(pThread->GetNoteDriver());
+  if (!pDriver)
+    return;
+  pDriver->UnRegisterForm(this);
+}
+FX_BOOL CFWL_FormImp::IsDoModal() {
+  return m_bDoModalFlag;
+}
+void CFWL_FormImp::SetThemeData() {
+  m_fSmallIconSz =
+      *static_cast<FX_FLOAT*>(GetThemeCapacity(FWL_WGTCAPACITY_FRM_SmallIcon));
+  m_fBigIconSz =
+      *static_cast<FX_FLOAT*>(GetThemeCapacity(FWL_WGTCAPACITY_FRM_BigIcon));
+}
+FX_BOOL CFWL_FormImp::HasIcon() {
+  IFWL_FormDP* pData =
+      static_cast<IFWL_FormDP*>(m_pProperties->m_pDataProvider);
+  return !!pData->GetIcon(m_pInterface, FALSE);
+}
+void CFWL_FormImp::UpdateIcon() {
+  CFWL_WidgetMgr* pWidgetMgr = static_cast<CFWL_WidgetMgr*>(FWL_GetWidgetMgr());
+  if (!pWidgetMgr)
+    return;
+  IFWL_FormDP* pData =
+      static_cast<IFWL_FormDP*>(m_pProperties->m_pDataProvider);
+  CFX_DIBitmap* pBigIcon = pData->GetIcon(m_pInterface, TRUE);
+  CFX_DIBitmap* pSmallIcon = pData->GetIcon(m_pInterface, FALSE);
+  if (pBigIcon && pBigIcon != m_pBigIcon) {
+    m_pBigIcon = pBigIcon;
+    pWidgetMgr->SetWidgetIcon_Native(m_pInterface, m_pBigIcon, TRUE);
+  }
+  if (pSmallIcon && pSmallIcon != m_pSmallIcon) {
+    m_pSmallIcon = pSmallIcon;
+    pWidgetMgr->SetWidgetIcon_Native(m_pInterface, m_pBigIcon, FALSE);
+  }
+}
+void CFWL_FormImp::UpdateCaption() {
+  CFWL_WidgetMgr* pWidgetMgr = static_cast<CFWL_WidgetMgr*>(FWL_GetWidgetMgr());
+  if (!pWidgetMgr)
+    return;
+  IFWL_FormDP* pData =
+      static_cast<IFWL_FormDP*>(m_pProperties->m_pDataProvider);
+  if (!pData)
+    return;
+  CFX_WideString text;
+  pData->GetCaption(m_pInterface, text);
+  pWidgetMgr->SetWidgetCaption_Native(m_pInterface, text);
+}
+void CFWL_FormImp::DoWidthLimit(FX_FLOAT& fLeft,
+                                FX_FLOAT& fWidth,
+                                FX_FLOAT fCurX,
+                                FX_FLOAT fSpace,
+                                FX_FLOAT fLimitMin,
+                                FX_FLOAT fLimitMax,
+                                FX_BOOL bLeft) {
+  FX_FLOAT fx = fCurX;
+  FX_FLOAT fy = 0;
+  TransformTo(NULL, fx, fy);
+  FX_FLOAT fTemp =
+      bLeft ? (fWidth - fx + fLeft + fSpace) : (fx - fLeft + fSpace);
+  if (fTemp >= fLimitMin && fTemp <= fLimitMax) {
+    fWidth = fTemp;
+    fLeft += bLeft ? (fx - fLeft - fSpace) : 0;
+  } else {
+    if (fTemp < fLimitMin && fWidth > fLimitMin) {
+      fLeft += bLeft ? (fWidth - fLimitMin) : 0;
+      fWidth = fLimitMin;
+    } else if (fTemp > fLimitMax && fWidth < fLimitMax) {
+      fLeft -= bLeft ? (fLimitMax - fWidth) : 0;
+      fWidth = fLimitMax;
+    }
+  }
+}
+void CFWL_FormImp::DoHeightLimit(FX_FLOAT& fTop,
+                                 FX_FLOAT& fHeight,
+                                 FX_FLOAT fCurY,
+                                 FX_FLOAT fSpace,
+                                 FX_FLOAT fLimitMin,
+                                 FX_FLOAT fLimitMax,
+                                 FX_BOOL bTop) {
+  FX_FLOAT fx = 0;
+  FX_FLOAT fy = fCurY;
+  TransformTo(NULL, fx, fy);
+  FX_FLOAT fTemp = bTop ? (fHeight - fy + fTop + fSpace) : (fy - fTop + fSpace);
+  if (fTemp >= fLimitMin && fTemp <= fLimitMax) {
+    fHeight = fTemp;
+    fTop += bTop ? (fy - fTop - fSpace) : 0;
+  } else {
+    if (fTemp < fLimitMin && fHeight > fLimitMin) {
+      fTop += bTop ? (fHeight - fLimitMin) : 0;
+      fHeight = fLimitMin;
+    } else if (fTemp > fLimitMax && fHeight < fLimitMax) {
+      fTop -= bTop ? (fLimitMax - fHeight) : 0;
+      fHeight = fLimitMax;
+    }
+  }
+}
+CFWL_FormImpDelegate::CFWL_FormImpDelegate(CFWL_FormImp* pOwner)
+    : m_pOwner(pOwner) {}
+int32_t CFWL_FormImpDelegate::OnProcessMessage(CFWL_Message* pMessage) {
+#ifdef FWL_UseMacSystemBorder
+  if (!pMessage)
+    return 0;
+  FX_DWORD dwMsgCode = pMessage->GetClassID();
+  switch (dwMsgCode) {
+    case FWL_MSGHASH_Activate: {
+      m_pOwner->m_pProperties->m_dwStates &= ~FWL_WGTSTATE_Deactivated;
+      m_pOwner->Repaint(&m_pOwner->m_rtRelative);
+      break;
+    }
+    case FWL_MSGHASH_Deactivate: {
+      m_pOwner->m_pProperties->m_dwStates |= FWL_WGTSTATE_Deactivated;
+      m_pOwner->Repaint(&m_pOwner->m_rtRelative);
+      break;
+    }
+  }
+  return FWL_ERR_Succeeded;
+#else
+  if (!pMessage)
+    return 0;
+  FX_DWORD dwMsgCode = pMessage->GetClassID();
+  int32_t iRet = 1;
+  switch (dwMsgCode) {
+    case FWL_MSGHASH_Activate: {
+      m_pOwner->m_pProperties->m_dwStates &= ~FWL_WGTSTATE_Deactivated;
+      IFWL_NoteThread* pThread = m_pOwner->GetOwnerThread();
+      CFWL_NoteDriver* pDriver =
+          static_cast<CFWL_NoteDriver*>(pThread->GetNoteDriver());
+      CFWL_WidgetImp* pSubFocusImp = m_pOwner->GetSubFocus();
+      IFWL_Widget* pSubFocus =
+          pSubFocusImp ? pSubFocusImp->GetInterface() : NULL;
+      if (pSubFocus && pSubFocus != pDriver->GetFocus()) {
+        pDriver->SetFocus(pSubFocus);
+      }
+      m_pOwner->Repaint(&m_pOwner->m_rtRelative);
+      break;
+    }
+    case FWL_MSGHASH_Deactivate: {
+      m_pOwner->m_pProperties->m_dwStates |= FWL_WGTSTATE_Deactivated;
+      IFWL_NoteThread* pThread = m_pOwner->GetOwnerThread();
+      CFWL_NoteDriver* pDriver =
+          static_cast<CFWL_NoteDriver*>(pThread->GetNoteDriver());
+      CFWL_WidgetImp* pSubFocusImp = m_pOwner->GetSubFocus();
+      IFWL_Widget* pSubFocus =
+          pSubFocusImp ? pSubFocusImp->GetInterface() : NULL;
+      if (pSubFocus) {
+        if (pSubFocus == pDriver->GetFocus()) {
+          pDriver->SetFocus(NULL);
+        } else if (pSubFocus->GetStates() & FWL_WGTSTATE_Focused) {
+          CFWL_MsgKillFocus ms;
+          IFWL_WidgetDelegate* pDelegate = pSubFocus->SetDelegate(NULL);
+          if (pDelegate) {
+            pDelegate->OnProcessMessage(&ms);
+          }
+        }
+      }
+      m_pOwner->Repaint(&m_pOwner->m_rtRelative);
+      break;
+    }
+    case FWL_MSGHASH_Mouse: {
+      CFWL_MsgMouse* pMsg = static_cast<CFWL_MsgMouse*>(pMessage);
+      switch (pMsg->m_dwCmd) {
+        case FWL_MSGMOUSECMD_LButtonDown: {
+          OnLButtonDown(pMsg);
+          break;
+        }
+        case FWL_MSGMOUSECMD_LButtonUp: {
+          OnLButtonUp(pMsg);
+          break;
+        }
+        case FWL_MSGMOUSECMD_MouseMove: {
+          OnMouseMove(pMsg);
+          break;
+        }
+        case FWL_MSGMOUSECMD_MouseHover: {
+          OnMouseHover(pMsg);
+          break;
+        }
+        case FWL_MSGMOUSECMD_MouseLeave: {
+          OnMouseLeave(pMsg);
+          break;
+        }
+        case FWL_MSGMOUSECMD_LButtonDblClk: {
+          OnLButtonDblClk(pMsg);
+          break;
+        }
+      }
+      break;
+    }
+    case FWL_MSGHASH_Size: {
+      CFWL_WidgetMgr* pWidgetMgr =
+          static_cast<CFWL_WidgetMgr*>(FWL_GetWidgetMgr());
+      if (!pWidgetMgr)
+        return 0;
+      pWidgetMgr->AddRedrawCounts(m_pOwner->m_pInterface);
+      if (!m_pOwner->m_bSetMaximize) {
+        break;
+      }
+      m_pOwner->m_bSetMaximize = FALSE;
+      CFWL_MsgSize* pMsg = static_cast<CFWL_MsgSize*>(pMessage);
+      CFX_RectF rt;
+      pWidgetMgr->GetWidgetRect_Native(m_pOwner->m_pInterface, rt);
+      m_pOwner->m_pProperties->m_rtWidget.left = rt.left;
+      m_pOwner->m_pProperties->m_rtWidget.top = rt.top;
+      m_pOwner->m_pProperties->m_rtWidget.width = (FX_FLOAT)pMsg->m_iWidth;
+      m_pOwner->m_pProperties->m_rtWidget.height = (FX_FLOAT)pMsg->m_iHeight;
+      m_pOwner->Update();
+      break;
+    }
+    case FWL_MSGHASH_WindowMove: {
+      OnWindowMove(static_cast<CFWL_MsgWindowMove*>(pMessage));
+      break;
+    }
+    case FWL_MSGHASH_Close: {
+      OnClose(static_cast<CFWL_MsgClose*>(pMessage));
+      break;
+    }
+    default: { iRet = 0; }
+  }
+  return iRet;
+#endif
+}
+FWL_ERR CFWL_FormImpDelegate::OnProcessEvent(CFWL_Event* pEvent) {
+  if (!pEvent)
+    return FWL_ERR_Indefinite;
+  if (pEvent->GetClassID() == FWL_EVTHASH_Close &&
+      pEvent->m_pSrcTarget == m_pOwner->m_pInterface) {
+  }
+  return FWL_ERR_Succeeded;
+}
+FWL_ERR CFWL_FormImpDelegate::OnDrawWidget(CFX_Graphics* pGraphics,
+                                           const CFX_Matrix* pMatrix) {
+  return m_pOwner->DrawWidget(pGraphics, pMatrix);
+}
+void CFWL_FormImpDelegate::OnLButtonDown(CFWL_MsgMouse* pMsg) {
+  m_pOwner->SetGrab(TRUE);
+  m_pOwner->m_bLButtonDown = TRUE;
+  m_pOwner->m_eResizeType = FORM_RESIZETYPE_None;
+  CFWL_SysBtn* pPressBtn = m_pOwner->GetSysBtnAtPoint(pMsg->m_fx, pMsg->m_fy);
+  m_pOwner->m_iCaptureBtn = m_pOwner->GetSysBtnIndex(pPressBtn);
+  CFX_RectF rtCap;
+  rtCap.Set(m_pOwner->m_rtCaption.left + m_pOwner->m_fCYBorder,
+            m_pOwner->m_rtCaption.top + m_pOwner->m_fCXBorder,
+            m_pOwner->m_rtCaption.width - FWL_SYSBTNSIZE * m_pOwner->m_iSysBox -
+                2 * m_pOwner->m_fCYBorder,
+            m_pOwner->m_rtCaption.height - m_pOwner->m_fCXBorder);
+  if (pPressBtn) {
+    pPressBtn->SetPressed();
+    m_pOwner->Repaint(&pPressBtn->m_rtBtn);
+  } else if (rtCap.Contains(pMsg->m_fx, pMsg->m_fy)) {
+    m_pOwner->m_eResizeType = FORM_RESIZETYPE_Cap;
+  } else if ((m_pOwner->m_pProperties->m_dwStyles & FWL_WGTSTYLE_Border) &&
+             (m_pOwner->m_pProperties->m_dwStyleExes &
+              FWL_STYLEEXT_FRM_Resize) &&
+             !m_pOwner->m_bMaximized) {
+    m_pOwner->SetCursor(pMsg->m_fx, pMsg->m_fy);
+  }
+  m_pOwner->m_InfoStart.m_ptStart = CFX_PointF(pMsg->m_fx, pMsg->m_fy);
+  m_pOwner->m_InfoStart.m_szStart =
+      CFX_SizeF(m_pOwner->m_pProperties->m_rtWidget.width,
+                m_pOwner->m_pProperties->m_rtWidget.height);
+}
+void CFWL_FormImpDelegate::OnLButtonUp(CFWL_MsgMouse* pMsg) {
+  m_pOwner->SetGrab(FALSE);
+  m_pOwner->m_bLButtonDown = FALSE;
+  CFWL_SysBtn* pPointBtn = m_pOwner->GetSysBtnAtPoint(pMsg->m_fx, pMsg->m_fy);
+  CFWL_SysBtn* pPressedBtn =
+      m_pOwner->GetSysBtnByIndex(m_pOwner->m_iCaptureBtn);
+  if (!pPressedBtn || pPointBtn != pPressedBtn) {
+    return;
+  }
+  if (pPressedBtn == m_pOwner->GetSysBtnByState(FWL_SYSBUTTONSTATE_Pressed)) {
+    pPressedBtn->SetNormal();
+  }
+  if (pPressedBtn == m_pOwner->m_pMaxBox) {
+    if (m_pOwner->m_bMaximized) {
+      m_pOwner->SetWidgetRect(m_pOwner->m_rtRestore);
+      m_pOwner->Update();
+      m_pOwner->Repaint();
+    } else {
+      m_pOwner->SetWorkAreaRect();
+      m_pOwner->Update();
+    }
+    m_pOwner->m_bMaximized = !m_pOwner->m_bMaximized;
+  } else if (pPressedBtn == m_pOwner->m_pMinBox) {
+    CFWL_WidgetMgr* pWidgetMgr =
+        static_cast<CFWL_WidgetMgr*>(FWL_GetWidgetMgr());
+    if (!pWidgetMgr)
+      return;
+    pWidgetMgr->SetMinimize_Native(m_pOwner->m_pInterface);
+  } else {
+    CFWL_EvtClose eClose;
+    eClose.m_pSrcTarget = m_pOwner->m_pInterface;
+    m_pOwner->DispatchEvent(&eClose);
+  }
+}
+void CFWL_FormImpDelegate::OnMouseMove(CFWL_MsgMouse* pMsg) {
+  if (m_pOwner->m_bLButtonDown) {
+    return;
+  }
+  if ((m_pOwner->m_pProperties->m_dwStyles & FWL_WGTSTYLE_Border) &&
+      (m_pOwner->m_pProperties->m_dwStyleExes & FWL_STYLEEXT_FRM_Resize) &&
+      !m_pOwner->m_bMaximized) {
+    m_pOwner->SetCursor(pMsg->m_fx, pMsg->m_fy);
+  }
+  CFX_RectF rtInvalidate;
+  rtInvalidate.Reset();
+  CFWL_SysBtn* pPointBtn = m_pOwner->GetSysBtnAtPoint(pMsg->m_fx, pMsg->m_fy);
+  CFWL_SysBtn* pOldHover = m_pOwner->GetSysBtnByState(FWL_SYSBUTTONSTATE_Hover);
+#if (_FX_OS_ == _FX_MACOSX_)
+  {
+    if (pOldHover && pPointBtn != pOldHover) {
+      pOldHover->SetNormal();
+    }
+    if (pPointBtn && pPointBtn != pOldHover) {
+      pPointBtn->SetHover();
+    }
+    if (m_pOwner->m_pCloseBox) {
+      rtInvalidate = m_pOwner->m_pCloseBox->m_rtBtn;
+    }
+    if (m_pOwner->m_pMaxBox) {
+      if (rtInvalidate.IsEmpty()) {
+        rtInvalidate = m_pOwner->m_pMaxBox->m_rtBtn;
+      } else {
+        rtInvalidate.Union(m_pOwner->m_pMaxBox->m_rtBtn);
+      }
+    }
+    if (m_pOwner->m_pMinBox) {
+      if (rtInvalidate.IsEmpty()) {
+        rtInvalidate = m_pOwner->m_pMinBox->m_rtBtn;
+      } else {
+        rtInvalidate.Union(m_pOwner->m_pMinBox->m_rtBtn);
+      }
+    }
+    if (!rtInvalidate.IsEmpty() &&
+        rtInvalidate.Contains(pMsg->m_fx, pMsg->m_fy)) {
+      m_pOwner->m_bMouseIn = TRUE;
+    }
+  }
+#else
+  {
+    if (pOldHover && pPointBtn != pOldHover) {
+      pOldHover->SetNormal();
+      rtInvalidate = pOldHover->m_rtBtn;
+    }
+    if (pPointBtn && pPointBtn != pOldHover) {
+      pPointBtn->SetHover();
+      if (rtInvalidate.IsEmpty()) {
+        rtInvalidate = pPointBtn->m_rtBtn;
+      } else {
+        rtInvalidate.Union(pPointBtn->m_rtBtn);
+      }
+    }
+  }
+#endif
+  if (!rtInvalidate.IsEmpty()) {
+    m_pOwner->Repaint(&rtInvalidate);
+  }
+}
+void CFWL_FormImpDelegate::OnMouseHover(CFWL_MsgMouse* pMsg) {
+  m_pOwner->SetCursor(pMsg->m_fx, pMsg->m_fy);
+}
+void CFWL_FormImpDelegate::OnMouseLeave(CFWL_MsgMouse* pMsg) {
+  CFWL_SysBtn* pHover = m_pOwner->GetSysBtnByState(FWL_SYSBUTTONSTATE_Hover);
+  if (pHover) {
+    pHover->SetNormal();
+    m_pOwner->Repaint(&pHover->m_rtBtn);
+  }
+  if (pMsg->m_dwCmd == FWL_MSGMOUSECMD_MouseLeave &&
+      !m_pOwner->m_bLButtonDown) {
+    m_pOwner->SetCursor(pMsg->m_fx, pMsg->m_fy);
+  }
+}
+void CFWL_FormImpDelegate::OnLButtonDblClk(CFWL_MsgMouse* pMsg) {
+  if ((m_pOwner->m_pProperties->m_dwStyleExes & FWL_STYLEEXT_FRM_Resize) &&
+      m_pOwner->HitTest(pMsg->m_fx, pMsg->m_fy) == FWL_WGTHITTEST_Titlebar) {
+    if (m_pOwner->m_bMaximized) {
+      m_pOwner->SetWidgetRect(m_pOwner->m_rtRestore);
+    } else {
+      m_pOwner->SetWorkAreaRect();
+    }
+    m_pOwner->Update();
+    m_pOwner->m_bMaximized = !m_pOwner->m_bMaximized;
+  }
+}
+void CFWL_FormImpDelegate::OnWindowMove(CFWL_MsgWindowMove* pMsg) {
+  m_pOwner->m_pProperties->m_rtWidget.left = pMsg->m_fx;
+  m_pOwner->m_pProperties->m_rtWidget.top = pMsg->m_fy;
+}
+void CFWL_FormImpDelegate::OnClose(CFWL_MsgClose* pMsg) {
+  CFWL_EvtClose eClose;
+  eClose.m_pSrcTarget = m_pOwner->m_pInterface;
+  m_pOwner->DispatchEvent(&eClose);
+}
+FWL_ERR FWL_Accelerator_SetForm(IFWL_Form* pFrom,
+                                CFX_MapAccelerators* pMapAccel) {
+  CFWL_FormImp* pImp = static_cast<CFWL_FormImp*>(pFrom->GetImpl());
+  if (!pImp)
+    return FWL_ERR_Indefinite;
+  return FWL_ERR_Succeeded;
+}
diff --git a/xfa/fwl/core/fwl_formimp.h b/xfa/fwl/core/fwl_formimp.h
new file mode 100644
index 0000000000..eddc1d6032
--- /dev/null
+++ b/xfa/fwl/core/fwl_formimp.h
@@ -0,0 +1,193 @@
+// Copyright 2014 PDFium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
+
+#ifndef XFA_FWL_CORE_FWL_FORMIMP_H_
+#define XFA_FWL_CORE_FWL_FORMIMP_H_
+
+#include "xfa/fwl/core/fwl_panelimp.h"
+#include "xfa/fwl/core/fwl_widgetimp.h"
+#include "xfa/include/fwl/core/fwl_form.h"
+
+class CFWL_NoteLoop;
+class CFWL_WidgetImpProperties;
+class CFWL_MsgMouse;
+class IFWL_Widget;
+class IFWL_ThemeProvider;
+class CFWL_SysBtn;
+class CFWL_FormImp;
+class CFWL_FormImpDelegate;
+
+#define FWL_SYSBUTTONSTATE_Hover 0x0001
+#define FWL_SYSBUTTONSTATE_Pressed 0x0002
+#define FWL_SYSBUTTONSTATE_Disabled 0x0010
+class CFWL_SysBtn {
+ public:
+  CFWL_SysBtn() {
+    m_rtBtn.Set(0, 0, 0, 0);
+    m_dwState = 0;
+  }
+
+  FX_BOOL IsHover() { return m_dwState & FWL_SYSBUTTONSTATE_Hover; }
+  FX_BOOL IsPressed() { return m_dwState & FWL_SYSBUTTONSTATE_Pressed; }
+  FX_BOOL IsDisabled() { return m_dwState & FWL_SYSBUTTONSTATE_Disabled; }
+  void SetNormal() { m_dwState &= 0xFFF0; }
+  void SetPressed() {
+    SetNormal();
+    m_dwState |= FWL_SYSBUTTONSTATE_Pressed;
+  }
+  void SetHover() {
+    SetNormal();
+    m_dwState |= FWL_SYSBUTTONSTATE_Hover;
+  }
+  void SetDisabled(FX_BOOL bDisabled) {
+    bDisabled ? m_dwState |= FWL_SYSBUTTONSTATE_Disabled
+              : m_dwState &= ~FWL_SYSBUTTONSTATE_Disabled;
+  }
+  int32_t GetPartState() {
+    return (IsDisabled() ? FWL_PARTSTATE_FRM_Disabled : (m_dwState + 1));
+  }
+
+  CFX_RectF m_rtBtn;
+  FX_DWORD m_dwState;
+};
+enum FORM_RESIZETYPE {
+  FORM_RESIZETYPE_None = 0,
+  FORM_RESIZETYPE_Cap,
+  FORM_RESIZETYPE_Left,
+  FORM_RESIZETYPE_Top,
+  FORM_RESIZETYPE_Right,
+  FORM_RESIZETYPE_Bottom,
+  FORM_RESIZETYPE_LeftTop,
+  FORM_RESIZETYPE_LeftBottom,
+  FORM_RESIZETYPE_RightTop,
+  FORM_RESIZETYPE_RightBottom
+};
+typedef struct RestoreResizeInfo {
+  CFX_PointF m_ptStart;
+  CFX_SizeF m_szStart;
+} RestoreInfo;
+class CFWL_FormImp : public CFWL_PanelImp {
+ public:
+  CFWL_FormImp(const CFWL_WidgetImpProperties& properties, IFWL_Widget* pOuter);
+  virtual ~CFWL_FormImp();
+  virtual FWL_ERR GetClassName(CFX_WideString& wsClass) const;
+  virtual FX_DWORD GetClassID() const;
+  virtual FX_BOOL IsInstance(const CFX_WideStringC& wsClass) const;
+  virtual FWL_ERR Initialize();
+  virtual FWL_ERR Finalize();
+
+  virtual FWL_ERR GetWidgetRect(CFX_RectF& rect, FX_BOOL bAutoSize = FALSE);
+  virtual FWL_ERR GetClientRect(CFX_RectF& rect);
+  virtual FWL_ERR Update();
+  virtual FX_DWORD HitTest(FX_FLOAT fx, FX_FLOAT fy);
+  virtual FWL_ERR DrawWidget(CFX_Graphics* pGraphics,
+                             const CFX_Matrix* pMatrix = NULL);
+  virtual FWL_FORMSIZE GetFormSize();
+  virtual FWL_ERR SetFormSize(FWL_FORMSIZE eFormSize);
+  virtual IFWL_Widget* DoModal();
+  virtual IFWL_Widget* DoModal(FX_DWORD& dwCommandID);
+  virtual FWL_ERR EndDoModal();
+  virtual FWL_ERR SetBorderRegion(CFX_Path* pPath);
+  virtual void DrawBackground(CFX_Graphics* pGraphics,
+                              IFWL_ThemeProvider* pTheme);
+  CFWL_WidgetImp* GetSubFocus();
+  void SetSubFocus(CFWL_WidgetImp* pWidget);
+  CFX_MapAccelerators& GetAccelerator();
+  void SetAccelerator(CFX_MapAccelerators* pAccelerators);
+
+ protected:
+  void ShowChildWidget(IFWL_Widget* pParent);
+  void RemoveSysButtons();
+  void CalcContentRect(CFX_RectF& rtContent);
+  CFWL_SysBtn* GetSysBtnAtPoint(FX_FLOAT fx, FX_FLOAT fy);
+  CFWL_SysBtn* GetSysBtnByState(FX_DWORD dwState);
+  CFWL_SysBtn* GetSysBtnByIndex(int32_t nIndex);
+  int32_t GetSysBtnIndex(CFWL_SysBtn* pBtn);
+  FX_FLOAT GetCaptionHeight();
+  void DrawCaptionText(CFX_Graphics* pGs,
+                       IFWL_ThemeProvider* pTheme,
+                       const CFX_Matrix* pMatrix = NULL);
+  void DrawIconImage(CFX_Graphics* pGs,
+                     IFWL_ThemeProvider* pTheme,
+                     const CFX_Matrix* pMatrix = NULL);
+  void GetEdgeRect(CFX_RectF& rtEdge);
+  void SetWorkAreaRect();
+  void SetCursor(FX_FLOAT fx, FX_FLOAT fy);
+  void Layout();
+  void ReSetSysBtn();
+  void RegisterForm();
+  void UnRegisterForm();
+  FX_BOOL IsDoModal();
+  void SetThemeData();
+  FX_BOOL HasIcon();
+  void UpdateIcon();
+  void UpdateCaption();
+  void DoWidthLimit(FX_FLOAT& fLeft,
+                    FX_FLOAT& fWidth,
+                    FX_FLOAT fCurX,
+                    FX_FLOAT fSpace,
+                    FX_FLOAT fLimitMin,
+                    FX_FLOAT fLimitMax,
+                    FX_BOOL bLeft);
+  void DoHeightLimit(FX_FLOAT& fTop,
+                     FX_FLOAT& fHeight,
+                     FX_FLOAT fCurY,
+                     FX_FLOAT fSpace,
+                     FX_FLOAT fLimitMin,
+                     FX_FLOAT fLimitMax,
+                     FX_BOOL bTop);
+  CFX_MapAccelerators m_mapAccelerators;
+  CFX_RectF m_rtRestore;
+  CFX_RectF m_rtCaptionText;
+  CFX_RectF m_rtRelative;
+  CFX_RectF m_rtCaption;
+  CFX_RectF m_rtIcon;
+  CFWL_SysBtn* m_pCloseBox;
+  CFWL_SysBtn* m_pMinBox;
+  CFWL_SysBtn* m_pMaxBox;
+  CFWL_SysBtn* m_pCaptionBox;
+  CFWL_NoteLoop* m_pNoteLoop;
+  CFWL_WidgetImp* m_pSubFocus;
+  RestoreInfo m_InfoStart;
+  FX_FLOAT m_fCXBorder;
+  FX_FLOAT m_fCYBorder;
+  int32_t m_iCaptureBtn;
+  int32_t m_iSysBox;
+  int32_t m_eResizeType;
+  FX_BOOL m_bLButtonDown;
+  FX_BOOL m_bMaximized;
+  FX_BOOL m_bSetMaximize;
+  FX_BOOL m_bCustomizeLayout;
+  FWL_FORMSIZE m_eFormSize;
+  FX_BOOL m_bDoModalFlag;
+  FX_FLOAT m_fSmallIconSz;
+  FX_FLOAT m_fBigIconSz;
+  CFX_DIBitmap* m_pBigIcon;
+  CFX_DIBitmap* m_pSmallIcon;
+  FX_BOOL m_bMouseIn;
+  friend class CFWL_FormImpDelegate;
+};
+class CFWL_FormImpDelegate : public CFWL_WidgetImpDelegate {
+ public:
+  CFWL_FormImpDelegate(CFWL_FormImp* pOwner);
+  int32_t OnProcessMessage(CFWL_Message* pMessage) override;
+  FWL_ERR OnProcessEvent(CFWL_Event* pEvent) override;
+  FWL_ERR OnDrawWidget(CFX_Graphics* pGraphics,
+                       const CFX_Matrix* pMatrix = NULL) override;
+
+ protected:
+  void OnLButtonDown(CFWL_MsgMouse* pMsg);
+  void OnLButtonUp(CFWL_MsgMouse* pMsg);
+  void OnMouseMove(CFWL_MsgMouse* pMsg);
+  void OnMouseHover(CFWL_MsgMouse* pMsg);
+  void OnMouseLeave(CFWL_MsgMouse* pMsg);
+  void OnLButtonDblClk(CFWL_MsgMouse* pMsg);
+  void OnWindowMove(CFWL_MsgWindowMove* pMsg);
+  void OnClose(CFWL_MsgClose* pMsg);
+  CFWL_FormImp* m_pOwner;
+};
+
+#endif  // XFA_FWL_CORE_FWL_FORMIMP_H_
diff --git a/xfa/fwl/core/fwl_gridimp.cpp b/xfa/fwl/core/fwl_gridimp.cpp
new file mode 100644
index 0000000000..b3b8d5aa8d
--- /dev/null
+++ b/xfa/fwl/core/fwl_gridimp.cpp
@@ -0,0 +1,1378 @@
+// 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 "xfa/fwl/core/fwl_gridimp.h"
+
+#include "xfa/fwl/core/fwl_contentimp.h"
+#include "xfa/fwl/core/fwl_noteimp.h"
+#include "xfa/fwl/core/fwl_targetimp.h"
+#include "xfa/fwl/core/fwl_threadimp.h"
+#include "xfa/fwl/core/fwl_widgetimp.h"
+
+// static
+IFWL_Grid* IFWL_Grid::Create(const CFWL_WidgetImpProperties& properties) {
+  IFWL_Grid* pGrid = new IFWL_Grid;
+  CFWL_GridImp* pGridImpl = new CFWL_GridImp(properties, nullptr);
+  pGrid->SetImpl(pGridImpl);
+  pGridImpl->SetInterface(pGrid);
+  return pGrid;
+}
+IFWL_Grid::IFWL_Grid() {}
+FWL_HGRIDCOLROW IFWL_Grid::InsertColRow(FX_BOOL bColumn, int32_t nIndex) {
+  return static_cast<CFWL_GridImp*>(GetImpl())->InsertColRow(bColumn, nIndex);
+}
+int32_t IFWL_Grid::CountColRows(FX_BOOL bColumn) {
+  return static_cast<CFWL_GridImp*>(GetImpl())->CountColRows(bColumn);
+}
+FWL_HGRIDCOLROW IFWL_Grid::GetColRow(FX_BOOL bColumn, int32_t nIndex) {
+  return static_cast<CFWL_GridImp*>(GetImpl())->GetColRow(bColumn, nIndex);
+}
+int32_t IFWL_Grid::GetIndex(FWL_HGRIDCOLROW hColRow) {
+  return static_cast<CFWL_GridImp*>(GetImpl())->GetIndex(hColRow);
+}
+FX_FLOAT IFWL_Grid::GetSize(FWL_HGRIDCOLROW hColRow, FWL_GRIDUNIT& eUnit) {
+  return static_cast<CFWL_GridImp*>(GetImpl())->GetSize(hColRow, eUnit);
+}
+FWL_ERR IFWL_Grid::SetSize(FWL_HGRIDCOLROW hColRow,
+                           FX_FLOAT fSize,
+                           FWL_GRIDUNIT eUnit) {
+  return static_cast<CFWL_GridImp*>(GetImpl())->SetSize(hColRow, fSize, eUnit);
+}
+FX_FLOAT IFWL_Grid::GetMinSize(FWL_HGRIDCOLROW hColRow, FWL_GRIDUNIT& eUnit) {
+  return static_cast<CFWL_GridImp*>(GetImpl())->GetMinSize(hColRow, eUnit);
+}
+FWL_ERR IFWL_Grid::SetMinSize(FWL_HGRIDCOLROW hColRow,
+                              FX_FLOAT fSize,
+                              FWL_GRIDUNIT eUnit) {
+  return static_cast<CFWL_GridImp*>(GetImpl())
+      ->SetMinSize(hColRow, fSize, eUnit);
+}
+FX_FLOAT IFWL_Grid::GetMaxSize(FWL_HGRIDCOLROW hColRow, FWL_GRIDUNIT& eUnit) {
+  return static_cast<CFWL_GridImp*>(GetImpl())->GetMaxSize(hColRow, eUnit);
+}
+FWL_ERR IFWL_Grid::SetMaxSize(FWL_HGRIDCOLROW hColRow,
+                              FX_FLOAT fSize,
+                              FWL_GRIDUNIT eUnit) {
+  return static_cast<CFWL_GridImp*>(GetImpl())
+      ->SetMaxSize(hColRow, fSize, eUnit);
+}
+FX_BOOL IFWL_Grid::DeleteColRow(FWL_HGRIDCOLROW hColRow) {
+  return static_cast<CFWL_GridImp*>(GetImpl())->DeleteColRow(hColRow);
+}
+FX_BOOL IFWL_Grid::IsColumn(FWL_HGRIDCOLROW hColRow) {
+  return static_cast<CFWL_GridImp*>(GetImpl())->IsColumn(hColRow);
+}
+int32_t IFWL_Grid::GetWidgetPos(IFWL_Widget* pWidget, FX_BOOL bColumn) {
+  return static_cast<CFWL_GridImp*>(GetImpl())->GetWidgetPos(pWidget, bColumn);
+}
+FWL_ERR IFWL_Grid::SetWidgetPos(IFWL_Widget* pWidget,
+                                int32_t iPos,
+                                FX_BOOL bColumn) {
+  return static_cast<CFWL_GridImp*>(GetImpl())
+      ->SetWidgetPos(pWidget, iPos, bColumn);
+}
+int32_t IFWL_Grid::GetWidgetSpan(IFWL_Widget* pWidget, FX_BOOL bColumn) {
+  return static_cast<CFWL_GridImp*>(GetImpl())->GetWidgetSpan(pWidget, bColumn);
+}
+FWL_ERR IFWL_Grid::SetWidgetSpan(IFWL_Widget* pWidget,
+                                 int32_t iSpan,
+                                 FX_BOOL bColumn) {
+  return static_cast<CFWL_GridImp*>(GetImpl())
+      ->SetWidgetSpan(pWidget, iSpan, bColumn);
+}
+FX_FLOAT IFWL_Grid::GetWidgetSize(IFWL_Widget* pWidget,
+                                  FWL_GRIDSIZE eSize,
+                                  FWL_GRIDUNIT& eUnit) {
+  return static_cast<CFWL_GridImp*>(GetImpl())
+      ->GetWidgetSize(pWidget, eSize, eUnit);
+}
+FWL_ERR IFWL_Grid::SetWidgetSize(IFWL_Widget* pWidget,
+                                 FWL_GRIDSIZE eSize,
+                                 FX_FLOAT fSize,
+                                 FWL_GRIDUNIT eUit) {
+  return static_cast<CFWL_GridImp*>(GetImpl())
+      ->SetWidgetSize(pWidget, eSize, fSize, eUit);
+}
+FX_BOOL IFWL_Grid::GetWidgetMargin(IFWL_Widget* pWidget,
+                                   FWL_GRIDMARGIN eMargin,
+                                   FX_FLOAT& fMargin) {
+  return static_cast<CFWL_GridImp*>(GetImpl())
+      ->GetWidgetMargin(pWidget, eMargin, fMargin);
+}
+FWL_ERR IFWL_Grid::SetWidgetMargin(IFWL_Widget* pWidget,
+                                   FWL_GRIDMARGIN eMargin,
+                                   FX_FLOAT fMargin) {
+  return static_cast<CFWL_GridImp*>(GetImpl())
+      ->SetWidgetMargin(pWidget, eMargin, fMargin);
+}
+FWL_ERR IFWL_Grid::RemoveWidgetMargin(IFWL_Widget* pWidget,
+                                      FWL_GRIDMARGIN eMargin) {
+  return static_cast<CFWL_GridImp*>(GetImpl())
+      ->RemoveWidgetMargin(pWidget, eMargin);
+}
+FX_FLOAT IFWL_Grid::GetGridSize(FWL_GRIDSIZE eSize, FWL_GRIDUNIT& eUnit) {
+  return static_cast<CFWL_GridImp*>(GetImpl())->GetGridSize(eSize, eUnit);
+}
+FWL_ERR IFWL_Grid::SetGridSize(FWL_GRIDSIZE eSize,
+                               FX_FLOAT fSize,
+                               FWL_GRIDUNIT eUit) {
+  return static_cast<CFWL_GridImp*>(GetImpl())->SetGridSize(eSize, fSize, eUit);
+}
+
+CFWL_GridImp::CFWL_GridImp(const CFWL_WidgetImpProperties& properties,
+                           IFWL_Widget* pOuter)
+    : CFWL_ContentImp(properties, pOuter) {
+  m_Size[FWL_GRIDSIZE_Width].eUnit = FWL_GRIDUNIT_Auto;
+  m_Size[FWL_GRIDSIZE_Width].fLength = 0;
+  m_Size[FWL_GRIDSIZE_Height].eUnit = FWL_GRIDUNIT_Auto;
+  m_Size[FWL_GRIDSIZE_Height].fLength = 0;
+  m_Size[FWL_GRIDSIZE_MinWidth].eUnit = FWL_GRIDUNIT_Fixed;
+  m_Size[FWL_GRIDSIZE_MinWidth].fLength = 0;
+  m_Size[FWL_GRIDSIZE_MaxWidth].eUnit = FWL_GRIDUNIT_Infinity;
+  m_Size[FWL_GRIDSIZE_MaxWidth].fLength = 0;
+  m_Size[FWL_GRIDSIZE_MinHeight].eUnit = FWL_GRIDUNIT_Fixed;
+  m_Size[FWL_GRIDSIZE_MinHeight].fLength = 0;
+  m_Size[FWL_GRIDSIZE_MaxHeight].eUnit = FWL_GRIDUNIT_Infinity;
+  m_Size[FWL_GRIDSIZE_MaxHeight].fLength = 0;
+}
+CFWL_GridImp::~CFWL_GridImp() {
+  int32_t iCount = m_Columns.GetSize();
+  for (int32_t i = 0; i < iCount; i++) {
+    delete static_cast<CFWL_GridColRow*>(m_Columns[i]);
+  }
+  m_Columns.RemoveAll();
+  iCount = m_Rows.GetSize();
+  for (int32_t j = 0; j < iCount; j++) {
+    delete static_cast<CFWL_GridColRow*>(m_Rows[j]);
+  }
+  m_Rows.RemoveAll();
+  FX_POSITION ps = m_mapWidgetInfo.GetStartPosition();
+  while (ps) {
+    IFWL_Widget* pWidget;
+    CFWL_GridWidgetInfo* pInfo;
+    m_mapWidgetInfo.GetNextAssoc(ps, (void*&)pWidget, (void*&)pInfo);
+    delete pInfo;
+  }
+  m_mapWidgetInfo.RemoveAll();
+  delete m_pDelegate;
+  m_pDelegate = nullptr;
+}
+FWL_ERR CFWL_GridImp::GetClassName(CFX_WideString& wsClass) const {
+  wsClass = FWL_CLASS_Grid;
+  return FWL_ERR_Succeeded;
+}
+FX_DWORD CFWL_GridImp::GetClassID() const {
+  return FWL_CLASSHASH_Grid;
+}
+FWL_ERR CFWL_GridImp::Initialize() {
+  if (CFWL_ContentImp::Initialize() != FWL_ERR_Succeeded)
+    return FWL_ERR_Indefinite;
+  m_pDelegate = new CFWL_GridImpDelegate(this);
+  return FWL_ERR_Succeeded;
+}
+FWL_ERR CFWL_GridImp::Finalize() {
+  if (CFWL_ContentImp::Finalize() != FWL_ERR_Succeeded)
+    return FWL_ERR_Indefinite;
+  delete m_pDelegate;
+  m_pDelegate = nullptr;
+  return FWL_ERR_Succeeded;
+}
+FWL_ERR CFWL_GridImp::GetWidgetRect(CFX_RectF& rect, FX_BOOL bAutoSize) {
+  if (bAutoSize) {
+    rect.left = 0;
+    rect.top = 0;
+    rect.width = ProcessUnCertainColumns();
+    rect.height = ProcessUnCertainRows();
+  } else {
+    rect = m_pProperties->m_rtWidget;
+  }
+  return FWL_ERR_Succeeded;
+}
+FWL_ERR CFWL_GridImp::SetWidgetRect(const CFX_RectF& rect) {
+  CFWL_WidgetImp::SetWidgetRect(rect);
+  return FWL_ERR_Succeeded;
+}
+FWL_ERR CFWL_GridImp::Update() {
+  if (IsLocked()) {
+    return FWL_ERR_Indefinite;
+  }
+  ProcessColumns(m_pProperties->m_rtWidget.width);
+  ProcessRows(m_pProperties->m_rtWidget.height);
+  SetAllWidgetsRect();
+  return FWL_ERR_Succeeded;
+}
+FWL_ERR CFWL_GridImp::DrawWidget(CFX_Graphics* pGraphics,
+                                 const CFX_Matrix* pMatrix) {
+  if (!pGraphics)
+    return FWL_ERR_Indefinite;
+  if ((m_pProperties->m_dwStyleExes & FWL_GRIDSTYLEEXT_ShowGridLines) == 0) {
+    return FWL_ERR_Succeeded;
+  }
+  pGraphics->SaveGraphState();
+  if (pMatrix) {
+    pGraphics->ConcatMatrix(pMatrix);
+  }
+  {
+    FX_BOOL bDrawLine = FALSE;
+    CFX_Path path;
+    path.Create();
+    int32_t iColumns = m_Columns.GetSize();
+    for (int32_t i = 1; i < iColumns; i++) {
+      CFWL_GridColRow* pColRow = static_cast<CFWL_GridColRow*>(m_Columns[i]);
+      if (!pColRow) {
+        continue;
+      }
+      bDrawLine = TRUE;
+      path.AddLine(pColRow->m_fActualPos, 0, pColRow->m_fActualPos,
+                   m_pProperties->m_rtWidget.height);
+    }
+    int32_t iRows = m_Rows.GetSize();
+    for (int32_t j = 1; j < iRows; j++) {
+      CFWL_GridColRow* pColRow = static_cast<CFWL_GridColRow*>(m_Rows[j]);
+      if (!pColRow) {
+        continue;
+      }
+      bDrawLine = TRUE;
+      path.AddLine(0, pColRow->m_fActualPos, m_pProperties->m_rtWidget.width,
+                   pColRow->m_fActualPos);
+    }
+    if (bDrawLine) {
+      CFX_Color cr(0xFFFF0000);
+      pGraphics->SetStrokeColor(&cr);
+      pGraphics->StrokePath(&path);
+    }
+  }
+  pGraphics->RestoreGraphState();
+  return FWL_ERR_Succeeded;
+}
+FWL_ERR CFWL_GridImp::InsertWidget(IFWL_Widget* pChild, int32_t nIndex) {
+  if (!pChild)
+    return FWL_ERR_Indefinite;
+  CFWL_ContentImp::InsertWidget(pChild, nIndex);
+  if (!m_mapWidgetInfo.GetValueAt(pChild)) {
+    CFWL_GridWidgetInfo* pInfo = new CFWL_GridWidgetInfo;
+    m_mapWidgetInfo.SetAt(pChild, pInfo);
+    m_Widgets.Add(pChild);
+  }
+  return FWL_ERR_Succeeded;
+}
+FWL_ERR CFWL_GridImp::RemoveWidget(IFWL_Widget* pWidget) {
+  if (!pWidget)
+    return FWL_ERR_Indefinite;
+  CFWL_ContentImp::RemoveWidget(pWidget);
+  if (CFWL_GridWidgetInfo* pInfo = static_cast<CFWL_GridWidgetInfo*>(
+          m_mapWidgetInfo.GetValueAt(pWidget))) {
+    m_mapWidgetInfo.RemoveKey(pWidget);
+    delete pInfo;
+    int32_t nIndex = m_Widgets.Find(pWidget);
+    m_Widgets.RemoveAt(nIndex, 1);
+  }
+  return FWL_ERR_Succeeded;
+}
+FWL_HGRIDCOLROW CFWL_GridImp::InsertColRow(FX_BOOL bColumn, int32_t nIndex) {
+  if (bColumn) {
+    if (nIndex < 0 || nIndex > m_Columns.GetSize()) {
+      nIndex = m_Columns.GetSize();
+    }
+    CFWL_GridColRow* pColumn = new CFWL_GridColRow;
+    m_Columns.InsertAt(nIndex, pColumn, 1);
+    return (FWL_HGRIDCOLROW)pColumn;
+  }
+  if (nIndex < 0 || nIndex > m_Rows.GetSize()) {
+    nIndex = m_Rows.GetSize();
+  }
+  CFWL_GridColRow* pRow = new CFWL_GridColRow;
+  m_Rows.InsertAt(nIndex, pRow, 1);
+  return (FWL_HGRIDCOLROW)pRow;
+}
+int32_t CFWL_GridImp::CountColRows(FX_BOOL bColumn) {
+  if (bColumn) {
+    return m_Columns.GetSize();
+  }
+  return m_Rows.GetSize();
+}
+FWL_HGRIDCOLROW CFWL_GridImp::GetColRow(FX_BOOL bColumn, int32_t nIndex) {
+  if (bColumn) {
+    if (nIndex < 0 || nIndex >= m_Columns.GetSize()) {
+      return NULL;
+    }
+    return (FWL_HGRIDCOLROW)m_Columns[nIndex];
+  }
+  if (nIndex < 0 || nIndex >= m_Rows.GetSize()) {
+    return NULL;
+  }
+  return (FWL_HGRIDCOLROW)m_Rows[nIndex];
+}
+int32_t CFWL_GridImp::GetIndex(FWL_HGRIDCOLROW hColRow) {
+  if (IsColumn(hColRow)) {
+    return m_Columns.Find(hColRow);
+  }
+  return m_Rows.Find(hColRow);
+}
+FX_FLOAT CFWL_GridImp::GetSize(FWL_HGRIDCOLROW hColRow, FWL_GRIDUNIT& eUnit) {
+  if (!hColRow)
+    return -1;
+  CFWL_GridColRow* pColRow = reinterpret_cast<CFWL_GridColRow*>(hColRow);
+  eUnit = pColRow->m_Size.eUnit;
+  return pColRow->m_Size.fLength;
+}
+FWL_ERR CFWL_GridImp::SetSize(FWL_HGRIDCOLROW hColRow,
+                              FX_FLOAT fSize,
+                              FWL_GRIDUNIT eUnit) {
+  if (!hColRow)
+    return FWL_ERR_Indefinite;
+  CFWL_GridColRow* pColRow = reinterpret_cast<CFWL_GridColRow*>(hColRow);
+  pColRow->m_Size.eUnit = eUnit;
+  pColRow->m_Size.fLength = fSize;
+  return FWL_ERR_Succeeded;
+}
+FX_FLOAT CFWL_GridImp::GetMinSize(FWL_HGRIDCOLROW hColRow,
+                                  FWL_GRIDUNIT& eUnit) {
+  if (!hColRow)
+    return -1;
+  CFWL_GridColRow* pColRow = reinterpret_cast<CFWL_GridColRow*>(hColRow);
+  eUnit = pColRow->m_MinSize.eUnit;
+  return pColRow->m_MinSize.fLength;
+}
+FWL_ERR CFWL_GridImp::SetMinSize(FWL_HGRIDCOLROW hColRow,
+                                 FX_FLOAT fSize,
+                                 FWL_GRIDUNIT eUnit) {
+  if (!hColRow)
+    return FWL_ERR_Indefinite;
+  CFWL_GridColRow* pColRow = reinterpret_cast<CFWL_GridColRow*>(hColRow);
+  pColRow->m_MinSize.eUnit = eUnit;
+  pColRow->m_MinSize.fLength = fSize;
+  return FWL_ERR_Succeeded;
+}
+FX_FLOAT CFWL_GridImp::GetMaxSize(FWL_HGRIDCOLROW hColRow,
+                                  FWL_GRIDUNIT& eUnit) {
+  if (!hColRow)
+    return -1;
+  CFWL_GridColRow* pColRow = reinterpret_cast<CFWL_GridColRow*>(hColRow);
+  eUnit = pColRow->m_MaxSize.eUnit;
+  return pColRow->m_MaxSize.fLength;
+}
+FWL_ERR CFWL_GridImp::SetMaxSize(FWL_HGRIDCOLROW hColRow,
+                                 FX_FLOAT fSize,
+                                 FWL_GRIDUNIT eUnit) {
+  if (!hColRow)
+    return FWL_ERR_Indefinite;
+  CFWL_GridColRow* pColRow = reinterpret_cast<CFWL_GridColRow*>(hColRow);
+  pColRow->m_MaxSize.eUnit = eUnit;
+  pColRow->m_MaxSize.fLength = fSize;
+  return FWL_ERR_Succeeded;
+}
+FX_BOOL CFWL_GridImp::DeleteColRow(FWL_HGRIDCOLROW hColRow) {
+  int32_t nIndex = m_Columns.Find(hColRow);
+  if (nIndex >= 0) {
+    m_Columns.RemoveAt(nIndex);
+    delete reinterpret_cast<CFWL_GridColRow*>(hColRow);
+    return TRUE;
+  }
+  nIndex = m_Rows.Find(hColRow);
+  if (nIndex >= 0) {
+    delete reinterpret_cast<CFWL_GridColRow*>(hColRow);
+    m_Rows.RemoveAt(nIndex);
+    return TRUE;
+  }
+  return FALSE;
+}
+FX_BOOL CFWL_GridImp::IsColumn(FWL_HGRIDCOLROW hColRow) {
+  return m_Columns.Find(hColRow) != -1;
+}
+int32_t CFWL_GridImp::GetWidgetPos(IFWL_Widget* pWidget, FX_BOOL bColumn) {
+  CFWL_GridWidgetInfo* pInfo =
+      static_cast<CFWL_GridWidgetInfo*>(GetWidgetInfo(pWidget));
+  if (pInfo) {
+    return bColumn ? pInfo->m_iColumn : pInfo->m_iRow;
+  }
+  return -1;
+}
+FWL_ERR CFWL_GridImp::SetWidgetPos(IFWL_Widget* pWidget,
+                                   int32_t iPos,
+                                   FX_BOOL bColumn) {
+  CFWL_GridWidgetInfo* pInfo =
+      static_cast<CFWL_GridWidgetInfo*>(GetWidgetInfo(pWidget));
+  if (pInfo) {
+    bColumn ? pInfo->m_iColumn = iPos : pInfo->m_iRow = iPos;
+  }
+  return FWL_ERR_Succeeded;
+}
+int32_t CFWL_GridImp::GetWidgetSpan(IFWL_Widget* pWidget, FX_BOOL bColumn) {
+  CFWL_GridWidgetInfo* pInfo =
+      static_cast<CFWL_GridWidgetInfo*>(GetWidgetInfo(pWidget));
+  if (pInfo) {
+    return bColumn ? pInfo->m_iColumnSpan : pInfo->m_iRowSpan;
+  }
+  return 0;
+}
+FWL_ERR CFWL_GridImp::SetWidgetSpan(IFWL_Widget* pWidget,
+                                    int32_t iSpan,
+                                    FX_BOOL bColumn) {
+  CFWL_GridWidgetInfo* pInfo =
+      static_cast<CFWL_GridWidgetInfo*>(GetWidgetInfo(pWidget));
+  if (pInfo) {
+    bColumn ? pInfo->m_iColumnSpan = iSpan : pInfo->m_iRowSpan = iSpan;
+  }
+  return FWL_ERR_Succeeded;
+}
+FX_FLOAT CFWL_GridImp::GetWidgetSize(IFWL_Widget* pWidget,
+                                     FWL_GRIDSIZE eSize,
+                                     FWL_GRIDUNIT& eUnit) {
+  CFWL_GridWidgetInfo* pInfo =
+      static_cast<CFWL_GridWidgetInfo*>(GetWidgetInfo(pWidget));
+  if (pInfo) {
+    eUnit = pInfo->m_Size[eSize].eUnit;
+    return pInfo->m_Size[eSize].fLength;
+  }
+  return 0;
+}
+FWL_ERR CFWL_GridImp::SetWidgetSize(IFWL_Widget* pWidget,
+                                    FWL_GRIDSIZE eSize,
+                                    FX_FLOAT fSize,
+                                    FWL_GRIDUNIT eUit) {
+  CFWL_GridWidgetInfo* pInfo =
+      static_cast<CFWL_GridWidgetInfo*>(GetWidgetInfo(pWidget));
+  if (pInfo) {
+    pInfo->m_Size[eSize].fLength = fSize;
+    pInfo->m_Size[eSize].eUnit = eUit;
+  }
+  return FWL_ERR_Succeeded;
+}
+FX_BOOL CFWL_GridImp::GetWidgetMargin(IFWL_Widget* pWidget,
+                                      FWL_GRIDMARGIN eMargin,
+                                      FX_FLOAT& fMargin) {
+  CFWL_GridWidgetInfo* pInfo =
+      static_cast<CFWL_GridWidgetInfo*>(GetWidgetInfo(pWidget));
+  if (pInfo) {
+    fMargin = pInfo->m_Margin[eMargin];
+    return (pInfo->m_dwMarginFlag & (1 << eMargin)) != 0;
+  }
+  return FALSE;
+}
+FWL_ERR CFWL_GridImp::SetWidgetMargin(IFWL_Widget* pWidget,
+                                      FWL_GRIDMARGIN eMargin,
+                                      FX_FLOAT fMargin) {
+  CFWL_GridWidgetInfo* pInfo =
+      static_cast<CFWL_GridWidgetInfo*>(GetWidgetInfo(pWidget));
+  if (pInfo) {
+    pInfo->m_Margin[eMargin] = fMargin;
+    pInfo->m_dwMarginFlag |= (1 << eMargin);
+  }
+  return FWL_ERR_Succeeded;
+}
+FWL_ERR CFWL_GridImp::RemoveWidgetMargin(IFWL_Widget* pWidget,
+                                         FWL_GRIDMARGIN eMargin) {
+  CFWL_GridWidgetInfo* pInfo =
+      static_cast<CFWL_GridWidgetInfo*>(GetWidgetInfo(pWidget));
+  if (pInfo) {
+    pInfo->m_dwMarginFlag &= ~(1 << eMargin);
+  }
+  return FWL_ERR_Succeeded;
+}
+FX_FLOAT CFWL_GridImp::GetGridSize(FWL_GRIDSIZE eSize, FWL_GRIDUNIT& eUnit) {
+  eUnit = m_Size[eSize].eUnit;
+  return m_Size[eSize].fLength;
+}
+FWL_ERR CFWL_GridImp::SetGridSize(FWL_GRIDSIZE eSize,
+                                  FX_FLOAT fSize,
+                                  FWL_GRIDUNIT eUit) {
+  m_Size[eSize].fLength = fSize;
+  m_Size[eSize].eUnit = eUit;
+  return FWL_ERR_Succeeded;
+}
+CFWL_GridWidgetInfo* CFWL_GridImp::GetWidgetInfo(IFWL_Widget* pWidget) {
+  return static_cast<CFWL_GridWidgetInfo*>(m_mapWidgetInfo.GetValueAt(pWidget));
+}
+void CFWL_GridImp::ProcFixedColRow(CFWL_GridColRow* pColRow,
+                                   int32_t nIndex,
+                                   FX_FLOAT fColRowSize,
+                                   FX_BOOL bColumn) {
+  pColRow->m_fActualSize = fColRowSize;
+  FX_POSITION ps = m_mapWidgetInfo.GetStartPosition();
+  while (ps) {
+    void* key = nullptr;
+    void* value = nullptr;
+    m_mapWidgetInfo.GetNextAssoc(ps, key, value);
+    IFWL_Widget* pWidget = static_cast<IFWL_Widget*>(key);
+    CFWL_GridWidgetInfo* pInfo = static_cast<CFWL_GridWidgetInfo*>(value);
+    if (bColumn) {
+      if (pInfo->m_iColumn == nIndex && pInfo->m_iColumnSpan == 1) {
+        CalcWidgetWidth(pWidget, pInfo, pColRow->m_fActualSize);
+      }
+    } else {
+      if (pInfo->m_iRow == nIndex && pInfo->m_iRowSpan == 1) {
+        CalcWidgetHeigt(pWidget, pInfo, pColRow->m_fActualSize);
+      }
+    }
+  }
+}
+void CFWL_GridImp::ProcAutoColRow(CFWL_GridColRow* pColRow,
+                                  int32_t nIndex,
+                                  FX_BOOL bColumn) {
+  if (!pColRow)
+    return;
+  FX_FLOAT fMaxSize = 0, fWidgetSize = 0;
+  FX_POSITION ps = m_mapWidgetInfo.GetStartPosition();
+  while (ps) {
+    IFWL_Widget* pWidget = NULL;
+    CFWL_GridWidgetInfo* pInfo = NULL;
+    m_mapWidgetInfo.GetNextAssoc(ps, (void*&)pWidget, (void*&)pInfo);
+    if (!pWidget || !pInfo) {
+      continue;
+    }
+    if (bColumn) {
+      if (pInfo->m_iColumn != nIndex || pInfo->m_iColumnSpan != 1) {
+        continue;
+      }
+      fWidgetSize = CalcAutoColumnWidgetWidth(pWidget, pInfo);
+      if (fMaxSize < fWidgetSize) {
+        fMaxSize = fWidgetSize;
+      }
+    } else {
+      if (pInfo->m_iRow != nIndex || pInfo->m_iRowSpan != 1) {
+        continue;
+      }
+      fWidgetSize = CalcAutoColumnWidgetHeight(pWidget, pInfo);
+      if (fMaxSize < fWidgetSize) {
+        fMaxSize = fWidgetSize;
+      }
+    }
+  }
+  SetColRowActualSize(pColRow, fMaxSize);
+}
+void CFWL_GridImp::ProcScaledColRow(CFWL_GridColRow* pColRow,
+                                    int32_t nIndex,
+                                    FX_FLOAT fColRowSize,
+                                    FX_BOOL bColumn) {
+  if (fColRowSize > 0) {
+    ProcFixedColRow(pColRow, nIndex, fColRowSize, bColumn);
+  }
+}
+void CFWL_GridImp::CalcWidgetWidth(IFWL_Widget* pWidget,
+                                   CFWL_GridWidgetInfo* pInfo,
+                                   FX_FLOAT fColunmWidth) {
+  if (pInfo->m_Size[FWL_GRIDSIZE_Width].eUnit == FWL_GRIDUNIT_Fixed) {
+    SetWidgetActualWidth(pInfo, pInfo->m_Size[FWL_GRIDSIZE_Width].fLength);
+  } else {
+    FX_FLOAT fWidth = 0;
+    FX_FLOAT fLeftMargin = 0, fRightMargin = 0;
+    FX_BOOL bLeftMargin =
+        GetWidgetMargin(pWidget, FWL_GRIDMARGIN_Left, fLeftMargin);
+    FX_BOOL bRightMargin =
+        GetWidgetMargin(pWidget, FWL_GRIDMARGIN_Right, fRightMargin);
+    if (bLeftMargin && bRightMargin) {
+      fWidth = fColunmWidth - fLeftMargin - fRightMargin;
+    } else {
+      CFX_RectF rtAuto;
+      pWidget->GetWidgetRect(rtAuto, TRUE);
+      fWidth = rtAuto.Width();
+    }
+    SetWidgetActualWidth(pInfo, fWidth);
+  }
+}
+void CFWL_GridImp::CalcWidgetHeigt(IFWL_Widget* pWidget,
+                                   CFWL_GridWidgetInfo* pInfo,
+                                   FX_FLOAT fRowHeigt) {
+  if (pInfo->m_Size[FWL_GRIDSIZE_Height].eUnit == FWL_GRIDUNIT_Fixed) {
+    SetWidgetActualHeight(pInfo, pInfo->m_Size[FWL_GRIDSIZE_Height].fLength);
+  } else {
+    FX_FLOAT fHeight = 0;
+    FX_FLOAT fTopMargin = 0, fBottomMargin = 0;
+    FX_BOOL bTopMargin =
+        GetWidgetMargin(pWidget, FWL_GRIDMARGIN_Top, fTopMargin);
+    FX_BOOL bBottomMargin =
+        GetWidgetMargin(pWidget, FWL_GRIDMARGIN_Bottom, fBottomMargin);
+    if (bTopMargin && bBottomMargin) {
+      fHeight = fRowHeigt - fTopMargin - fBottomMargin;
+    } else {
+      CFX_RectF rtAuto;
+      pWidget->GetWidgetRect(rtAuto, TRUE);
+      fHeight = rtAuto.Height();
+    }
+    SetWidgetActualHeight(pInfo, fHeight);
+  }
+}
+FX_FLOAT CFWL_GridImp::CalcAutoColumnWidgetWidth(IFWL_Widget* pWidget,
+                                                 CFWL_GridWidgetInfo* pInfo) {
+  FX_FLOAT fLeftMargin = 0, fRightMargin = 0;
+  FX_BOOL bLeftMargin =
+      GetWidgetMargin(pWidget, FWL_GRIDMARGIN_Left, fLeftMargin);
+  FX_BOOL bRightMargin =
+      GetWidgetMargin(pWidget, FWL_GRIDMARGIN_Right, fRightMargin);
+  if (pInfo->m_Size[FWL_GRIDSIZE_Width].eUnit == FWL_GRIDUNIT_Fixed) {
+    SetWidgetActualWidth(pInfo, pInfo->m_Size[FWL_GRIDSIZE_Width].fLength);
+  } else {
+    CFX_RectF rtAuto;
+    pWidget->GetWidgetRect(rtAuto, TRUE);
+    FX_FLOAT fWidth = rtAuto.width;
+    SetWidgetActualWidth(pInfo, fWidth);
+  }
+  FX_FLOAT fTotal = pInfo->m_fActualWidth;
+  if (bLeftMargin) {
+    fTotal += fLeftMargin;
+  }
+  if (bRightMargin) {
+    fTotal += fRightMargin;
+  }
+  return fTotal;
+}
+FX_FLOAT CFWL_GridImp::CalcAutoColumnWidgetHeight(IFWL_Widget* pWidget,
+                                                  CFWL_GridWidgetInfo* pInfo) {
+  FX_FLOAT fTopMargin = 0, fBottomMargin = 0;
+  FX_BOOL bTopMargin = GetWidgetMargin(pWidget, FWL_GRIDMARGIN_Top, fTopMargin);
+  FX_BOOL bBottomMargin =
+      GetWidgetMargin(pWidget, FWL_GRIDMARGIN_Bottom, fBottomMargin);
+  if (pInfo->m_Size[FWL_GRIDSIZE_Height].eUnit == FWL_GRIDUNIT_Fixed) {
+    SetWidgetActualHeight(pInfo, pInfo->m_Size[FWL_GRIDSIZE_Height].fLength);
+  } else {
+    CFX_RectF rtAuto;
+    pWidget->GetWidgetRect(rtAuto, TRUE);
+    FX_FLOAT fHeight = rtAuto.height;
+    SetWidgetActualHeight(pInfo, fHeight);
+  }
+  FX_FLOAT fTotal = pInfo->m_fActualHeight;
+  if (bTopMargin) {
+    fTotal += fTopMargin;
+  }
+  if (bBottomMargin) {
+    fTotal += fBottomMargin;
+  }
+  return fTotal;
+}
+FX_FLOAT CFWL_GridImp::ProcessColumns(FX_FLOAT fWidth) {
+  if (fWidth <= 0) {
+    return ProcessUnCertainColumns();
+  }
+  int32_t iColumns = m_Columns.GetSize();
+  if (iColumns < 1) {
+    return fWidth;
+  }
+  FX_FLOAT fFixedWidth = 0;
+  FX_FLOAT fAutoWidth = 0;
+  CFX_PtrArray autoColumns;
+  CFX_PtrArray scaledColumns;
+  FX_FLOAT fScaledColumnNum = 0;
+  for (int32_t i = 0; i < iColumns; i++) {
+    CFWL_GridColRow* pColRow = static_cast<CFWL_GridColRow*>(m_Columns[i]);
+    if (!pColRow) {
+      continue;
+    }
+    switch (pColRow->m_Size.eUnit) {
+      case FWL_GRIDUNIT_Fixed: {
+        SetColRowActualSize(pColRow, pColRow->m_Size.fLength);
+        fFixedWidth += pColRow->m_fActualSize;
+        break;
+      }
+      case FWL_GRIDUNIT_Auto: {
+        ProcAutoColRow(pColRow, i, TRUE);
+        autoColumns.Add(pColRow);
+        break;
+      }
+      case FWL_GRIDUNIT_Scaled:
+      default: {
+        fScaledColumnNum += pColRow->m_Size.fLength;
+        scaledColumns.Add(pColRow);
+        SetColRowActualSize(pColRow, 0);
+      }
+    }
+  }
+  FX_POSITION ps = m_mapWidgetInfo.GetStartPosition();
+  while (ps) {
+    IFWL_Widget* pWidget = NULL;
+    CFWL_GridWidgetInfo* pInfo = NULL;
+    m_mapWidgetInfo.GetNextAssoc(ps, (void*&)pWidget, (void*&)pInfo);
+    if (!pInfo || pInfo->m_iColumnSpan < 2) {
+      continue;
+    }
+    CFX_PtrArray spanAutoColumns;
+    FX_FLOAT fSpanSize = 0;
+    int32_t iAutoColRows = 0;
+    int32_t iScaledColRows = 0;
+    for (int32_t i = 0; i < pInfo->m_iColumnSpan; i++) {
+      CFWL_GridColRow* pColumn = reinterpret_cast<CFWL_GridColRow*>(
+          GetColRow(TRUE, pInfo->m_iColumn + i));
+      if (!pColumn) {
+        break;
+      }
+      fSpanSize += pColumn->m_fActualSize;
+      if (pColumn->m_Size.eUnit == FWL_GRIDUNIT_Auto) {
+        iAutoColRows++;
+        spanAutoColumns.Add(pColumn);
+      } else if (pColumn->m_Size.eUnit == FWL_GRIDUNIT_Scaled) {
+        iScaledColRows++;
+      }
+    }
+    if (iAutoColRows < 1) {
+      continue;
+    }
+    FX_FLOAT fWidgetWidth = CalcAutoColumnWidgetWidth(pWidget, pInfo);
+    if (fWidgetWidth > fSpanSize) {
+      if (iScaledColRows > 0) {
+      } else {
+        SetSpanAutoColRowSize(spanAutoColumns, fWidgetWidth - fSpanSize);
+      }
+    }
+  }
+  int32_t iAutoCols = autoColumns.GetSize();
+  for (int32_t k = 0; k < iAutoCols; k++) {
+    fAutoWidth += static_cast<CFWL_GridColRow*>(autoColumns[k])->m_fActualSize;
+  }
+  FX_FLOAT fScaledWidth = fWidth - fFixedWidth - fAutoWidth;
+  if (fScaledWidth > 0 && fScaledColumnNum > 0) {
+    SetScaledColRowsSize(scaledColumns, fScaledWidth, fScaledColumnNum);
+  }
+  return fWidth;
+}
+FX_FLOAT CFWL_GridImp::ProcessRows(FX_FLOAT fHeight) {
+  if (fHeight <= 0) {
+    return ProcessUnCertainRows();
+  }
+  int32_t iRows = m_Rows.GetSize();
+  if (iRows < 1) {
+    return fHeight;
+  }
+  FX_FLOAT fFixedHeight = 0;
+  FX_FLOAT fAutoHeigt = 0;
+  CFX_PtrArray autoRows;
+  CFX_PtrArray scaledRows;
+  FX_FLOAT fScaledRowNum = 0;
+  for (int32_t i = 0; i < iRows; i++) {
+    CFWL_GridColRow* pColRow = static_cast<CFWL_GridColRow*>(m_Rows[i]);
+    if (!pColRow) {
+      continue;
+    }
+    switch (pColRow->m_Size.eUnit) {
+      case FWL_GRIDUNIT_Fixed: {
+        SetColRowActualSize(pColRow, pColRow->m_Size.fLength);
+        fFixedHeight += pColRow->m_fActualSize;
+        break;
+      }
+      case FWL_GRIDUNIT_Auto: {
+        ProcAutoColRow(pColRow, i, FALSE);
+        autoRows.Add(pColRow);
+        break;
+      }
+      case FWL_GRIDUNIT_Scaled:
+      default: {
+        fScaledRowNum += pColRow->m_Size.fLength;
+        scaledRows.Add(pColRow);
+        SetColRowActualSize(pColRow, 0);
+        break;
+      }
+    }
+  }
+  FX_POSITION ps = m_mapWidgetInfo.GetStartPosition();
+  while (ps) {
+    IFWL_Widget* pWidget = NULL;
+    CFWL_GridWidgetInfo* pInfo = NULL;
+    m_mapWidgetInfo.GetNextAssoc(ps, (void*&)pWidget, (void*&)pInfo);
+    if (!pInfo || pInfo->m_iRowSpan < 2) {
+      continue;
+    }
+    CFX_PtrArray spanAutoRows;
+    FX_FLOAT fSpanSize = 0;
+    int32_t iAutoColRows = 0;
+    int32_t iScaledColRows = 0;
+    for (int32_t i = 0; i < pInfo->m_iRowSpan; i++) {
+      CFWL_GridColRow* pRow = reinterpret_cast<CFWL_GridColRow*>(
+          GetColRow(FALSE, pInfo->m_iRow + i));
+      if (!pRow) {
+        break;
+      }
+      fSpanSize += pRow->m_fActualSize;
+      if (pRow->m_Size.eUnit == FWL_GRIDUNIT_Auto) {
+        iAutoColRows++;
+        spanAutoRows.Add(pRow);
+      } else if (pRow->m_Size.eUnit == FWL_GRIDUNIT_Scaled) {
+        iScaledColRows++;
+      }
+    }
+    if (iAutoColRows < 1) {
+      continue;
+    }
+    FX_FLOAT fWidgetHeight = CalcAutoColumnWidgetHeight(pWidget, pInfo);
+    if (fWidgetHeight > fSpanSize) {
+      if (iScaledColRows > 0) {
+      } else {
+        SetSpanAutoColRowSize(spanAutoRows, fWidgetHeight - fSpanSize);
+      }
+    }
+  }
+  int32_t iAutoRows = autoRows.GetSize();
+  for (int32_t k = 0; k < iAutoRows; k++) {
+    fAutoHeigt +=
+        reinterpret_cast<CFWL_GridColRow*>(autoRows[k])->m_fActualSize;
+  }
+  FX_FLOAT fScaledHeight = fHeight - fFixedHeight - fAutoHeigt;
+  if (fScaledHeight > 0 && fScaledRowNum > 0) {
+    SetScaledColRowsSize(scaledRows, fScaledHeight, fScaledRowNum);
+  }
+  return fHeight;
+}
+FX_FLOAT CFWL_GridImp::ProcessUnCertainColumns() {
+  int32_t iColumns = m_Columns.GetSize();
+  if (iColumns < 1) {
+    CFWL_GridColRow* pColRow = new CFWL_GridColRow;
+    pColRow->m_Size.eUnit = FWL_GRIDUNIT_Auto;
+    ProcAutoColRow(pColRow, 0, TRUE);
+    FX_FLOAT fWidth = pColRow->m_fActualSize;
+    delete pColRow;
+    return fWidth;
+  }
+  FX_FLOAT fFixedWidth = 0;
+  CFX_PtrArray autoColumns;
+  CFX_PtrArray scaledColumns;
+  FX_FLOAT fScaledColumnNum = 0;
+  FX_FLOAT fScaledMaxPerWidth = 0;
+  for (int32_t i = 0; i < iColumns; i++) {
+    CFWL_GridColRow* pColRow = reinterpret_cast<CFWL_GridColRow*>(m_Columns[i]);
+    if (!pColRow) {
+      continue;
+    }
+    switch (pColRow->m_Size.eUnit) {
+      case FWL_GRIDUNIT_Fixed: {
+        SetColRowActualSize(pColRow, pColRow->m_Size.fLength);
+        fFixedWidth += pColRow->m_fActualSize;
+        break;
+      }
+      case FWL_GRIDUNIT_Auto: {
+        ProcAutoColRow(pColRow, i, TRUE);
+        autoColumns.Add(pColRow);
+        break;
+      }
+      case FWL_GRIDUNIT_Scaled:
+      default: {
+        ProcAutoColRow(pColRow, i, TRUE);
+        fScaledColumnNum += pColRow->m_Size.fLength;
+        scaledColumns.Add(pColRow);
+        if (pColRow->m_Size.fLength <= 0) {
+          break;
+        }
+        FX_FLOAT fPerWidth = pColRow->m_fActualSize / pColRow->m_Size.fLength;
+        if (fPerWidth > fScaledMaxPerWidth) {
+          fScaledMaxPerWidth = fPerWidth;
+        }
+      }
+    }
+  }
+  iColumns = scaledColumns.GetSize();
+  for (int32_t j = 0; j < iColumns; j++) {
+    CFWL_GridColRow* pColRow = static_cast<CFWL_GridColRow*>(scaledColumns[j]);
+    if (!pColRow) {
+      continue;
+    }
+    SetColRowActualSize(pColRow, fScaledMaxPerWidth * pColRow->m_Size.fLength);
+  }
+  FX_POSITION ps = m_mapWidgetInfo.GetStartPosition();
+  while (ps) {
+    IFWL_Widget* pWidget = NULL;
+    CFWL_GridWidgetInfo* pInfo = NULL;
+    m_mapWidgetInfo.GetNextAssoc(ps, (void*&)pWidget, (void*&)pInfo);
+    if (!pInfo || pInfo->m_iColumnSpan < 2) {
+      continue;
+    }
+    CFX_PtrArray spanAutoColumns;
+    CFX_PtrArray spanScaledColumns;
+    FX_FLOAT fSpanSize = 0;
+    FX_FLOAT fScaledSum = 0;
+    int32_t iAutoColRows = 0;
+    int32_t iScaledColRows = 0;
+    for (int32_t i = 0; i < pInfo->m_iColumnSpan; i++) {
+      CFWL_GridColRow* pColumn = reinterpret_cast<CFWL_GridColRow*>(
+          GetColRow(TRUE, pInfo->m_iColumn + i));
+      if (!pColumn) {
+        break;
+      }
+      fSpanSize += pColumn->m_fActualSize;
+      if (pColumn->m_Size.eUnit == FWL_GRIDUNIT_Auto) {
+        iAutoColRows++;
+        spanAutoColumns.Add(pColumn);
+      } else if (pColumn->m_Size.eUnit == FWL_GRIDUNIT_Scaled) {
+        iScaledColRows++;
+        fScaledSum += pColumn->m_Size.fLength;
+        spanScaledColumns.Add(pColumn);
+      }
+    }
+    if (iAutoColRows < 1 && iScaledColRows < 1) {
+      continue;
+    }
+    FX_FLOAT fWidgetWidth = CalcAutoColumnWidgetWidth(pWidget, pInfo);
+    if (fWidgetWidth > fSpanSize) {
+      if (iScaledColRows > 0) {
+        if (fScaledSum <= 0) {
+          continue;
+        }
+        SetSpanScaledColRowSize(spanScaledColumns, fWidgetWidth - fSpanSize,
+                                fScaledSum);
+      } else {
+        SetSpanAutoColRowSize(spanAutoColumns, fWidgetWidth - fSpanSize);
+      }
+    }
+  }
+  FX_FLOAT fAutoWidth = 0;
+  int32_t iAutoCols = autoColumns.GetSize();
+  for (int32_t m = 0; m < iAutoCols; m++) {
+    fAutoWidth += static_cast<CFWL_GridColRow*>(autoColumns[m])->m_fActualSize;
+  }
+  FX_FLOAT fScaledWidth = 0;
+  iColumns = scaledColumns.GetSize();
+  for (int32_t n = 0; n < iColumns; n++) {
+    fScaledWidth +=
+        static_cast<CFWL_GridColRow*>(scaledColumns[n])->m_fActualSize;
+  }
+  return fFixedWidth + fAutoWidth + fScaledWidth;
+}
+FX_FLOAT CFWL_GridImp::ProcessUnCertainRows() {
+  int32_t iRows = m_Rows.GetSize();
+  if (iRows < 1) {
+    CFWL_GridColRow* pColRow = new CFWL_GridColRow;
+    pColRow->m_Size.eUnit = FWL_GRIDUNIT_Auto;
+    ProcAutoColRow(pColRow, 0, FALSE);
+    FX_FLOAT fWidth = pColRow->m_fActualSize;
+    delete pColRow;
+    return fWidth;
+  }
+  FX_FLOAT fFixedHeight = 0;
+  CFX_PtrArray autoRows;
+  CFX_PtrArray scaledRows;
+  FX_FLOAT fScaledRowNum = 0;
+  FX_FLOAT fScaledMaxPerHeight = 0;
+  for (int32_t i = 0; i < iRows; i++) {
+    CFWL_GridColRow* pColRow = static_cast<CFWL_GridColRow*>(m_Rows[i]);
+    if (!pColRow) {
+      continue;
+    }
+    switch (pColRow->m_Size.eUnit) {
+      case FWL_GRIDUNIT_Fixed: {
+        SetColRowActualSize(pColRow, pColRow->m_Size.fLength);
+        fFixedHeight += pColRow->m_fActualSize;
+        break;
+      }
+      case FWL_GRIDUNIT_Auto: {
+        ProcAutoColRow(pColRow, i, FALSE);
+        autoRows.Add(pColRow);
+        break;
+      }
+      case FWL_GRIDUNIT_Scaled:
+      default: {
+        ProcAutoColRow(pColRow, i, FALSE);
+        fScaledRowNum += pColRow->m_Size.fLength;
+        scaledRows.Add(pColRow);
+        if (pColRow->m_Size.fLength > 0) {
+          FX_FLOAT fPerHeight =
+              pColRow->m_fActualSize / pColRow->m_Size.fLength;
+          if (fPerHeight > fScaledMaxPerHeight) {
+            fScaledMaxPerHeight = fPerHeight;
+          }
+        }
+        break;
+      }
+    }
+  }
+  iRows = scaledRows.GetSize();
+  for (int32_t j = 0; j < iRows; j++) {
+    CFWL_GridColRow* pColRow = static_cast<CFWL_GridColRow*>(scaledRows[j]);
+    if (!pColRow) {
+      continue;
+    }
+    SetColRowActualSize(pColRow, fScaledMaxPerHeight * pColRow->m_Size.fLength);
+  }
+  FX_POSITION ps = m_mapWidgetInfo.GetStartPosition();
+  while (ps) {
+    void* key = nullptr;
+    void* value = nullptr;
+    m_mapWidgetInfo.GetNextAssoc(ps, key, value);
+    IFWL_Widget* pWidget = static_cast<IFWL_Widget*>(key);
+    CFWL_GridWidgetInfo* pInfo = static_cast<CFWL_GridWidgetInfo*>(value);
+    if (pInfo->m_iRowSpan < 2) {
+      continue;
+    }
+    CFX_PtrArray spanAutoRows;
+    CFX_PtrArray spanScaledRows;
+    FX_FLOAT fSpanSize = 0;
+    FX_FLOAT fScaledSum = 0;
+    int32_t iAutoColRows = 0;
+    int32_t iScaledColRows = 0;
+    for (int32_t i = 0; i < pInfo->m_iRowSpan; i++) {
+      CFWL_GridColRow* pRow = reinterpret_cast<CFWL_GridColRow*>(
+          GetColRow(FALSE, pInfo->m_iRow + i));
+      if (!pRow) {
+        break;
+      }
+      fSpanSize += pRow->m_fActualSize;
+      if (pRow->m_Size.eUnit == FWL_GRIDUNIT_Auto) {
+        iAutoColRows++;
+        spanAutoRows.Add(pRow);
+      } else if (pRow->m_Size.eUnit == FWL_GRIDUNIT_Scaled) {
+        iScaledColRows++;
+        fScaledSum += pRow->m_Size.fLength;
+        spanScaledRows.Add(pRow);
+      }
+    }
+    if (iAutoColRows < 1 && iScaledColRows < 1) {
+      continue;
+    }
+    FX_FLOAT fWidgetHeight = CalcAutoColumnWidgetHeight(pWidget, pInfo);
+    if (fWidgetHeight > fSpanSize) {
+      if (iScaledColRows > 0) {
+        if (fScaledSum <= 0) {
+          continue;
+        }
+        SetSpanScaledColRowSize(spanScaledRows, fWidgetHeight - fSpanSize,
+                                fScaledSum);
+      } else {
+        SetSpanAutoColRowSize(spanAutoRows, fWidgetHeight - fSpanSize);
+      }
+    }
+  }
+  FX_FLOAT fAutoHeigt = 0;
+  int32_t iAutoRows = autoRows.GetSize();
+  for (int32_t m = 0; m < iAutoRows; m++) {
+    fAutoHeigt += static_cast<CFWL_GridColRow*>(autoRows[m])->m_fActualSize;
+  }
+  FX_FLOAT fScaledHeight = 0;
+  iRows = scaledRows.GetSize();
+  for (int32_t n = 0; n < iRows; n++) {
+    fScaledHeight +=
+        static_cast<CFWL_GridColRow*>(scaledRows[n])->m_fActualSize;
+  }
+  return fFixedHeight + fAutoHeigt + fScaledHeight;
+}
+FX_BOOL CFWL_GridImp::SetColRowActualSize(CFWL_GridColRow* pColRow,
+                                          FX_FLOAT fSize,
+                                          FX_BOOL bSetBeyond) {
+  if (pColRow->m_MinSize.eUnit == FWL_GRIDUNIT_Fixed &&
+      fSize < pColRow->m_MinSize.fLength) {
+    pColRow->m_fActualSize = pColRow->m_MinSize.fLength;
+    return FALSE;
+  }
+  if (pColRow->m_MaxSize.eUnit == FWL_GRIDUNIT_Fixed &&
+      fSize > pColRow->m_MaxSize.fLength) {
+    pColRow->m_fActualSize = pColRow->m_MaxSize.fLength;
+    return FALSE;
+  }
+  if (bSetBeyond) {
+    return TRUE;
+  }
+  pColRow->m_fActualSize = fSize;
+  return TRUE;
+}
+FX_FLOAT CFWL_GridImp::SetWidgetActualWidth(CFWL_GridWidgetInfo* pInfo,
+                                            FX_FLOAT fWidth) {
+  if (pInfo->m_Size[FWL_GRIDSIZE_MinWidth].eUnit == FWL_GRIDUNIT_Fixed &&
+      fWidth < pInfo->m_Size[FWL_GRIDSIZE_MinWidth].fLength) {
+    fWidth = pInfo->m_Size[FWL_GRIDSIZE_MinWidth].fLength;
+  }
+  if (pInfo->m_Size[FWL_GRIDSIZE_MaxWidth].eUnit == FWL_GRIDUNIT_Fixed &&
+      fWidth > pInfo->m_Size[FWL_GRIDSIZE_MaxWidth].fLength) {
+    fWidth = pInfo->m_Size[FWL_GRIDSIZE_MaxWidth].fLength;
+  }
+  pInfo->m_fActualWidth = fWidth;
+  return fWidth;
+}
+FX_FLOAT CFWL_GridImp::SetWidgetActualHeight(CFWL_GridWidgetInfo* pInfo,
+                                             FX_FLOAT fHeight) {
+  if (pInfo->m_Size[FWL_GRIDSIZE_MinHeight].eUnit == FWL_GRIDUNIT_Fixed &&
+      fHeight < pInfo->m_Size[FWL_GRIDSIZE_MinHeight].fLength) {
+    fHeight = pInfo->m_Size[FWL_GRIDSIZE_MinHeight].fLength;
+  }
+  if (pInfo->m_Size[FWL_GRIDSIZE_MaxHeight].eUnit == FWL_GRIDUNIT_Fixed &&
+      fHeight > pInfo->m_Size[FWL_GRIDSIZE_MaxHeight].fLength) {
+    fHeight = pInfo->m_Size[FWL_GRIDSIZE_MaxHeight].fLength;
+  }
+  pInfo->m_fActualHeight = fHeight;
+  return fHeight;
+}
+void CFWL_GridImp::SetAllWidgetsRect() {
+  FX_FLOAT fStartLeft = 0;
+  int32_t iColumns = m_Columns.GetSize();
+  for (int32_t i = 0; i < iColumns; i++) {
+    CFWL_GridColRow* pColRow = static_cast<CFWL_GridColRow*>(m_Columns[i]);
+    if (!pColRow) {
+      continue;
+    }
+    pColRow->m_fActualPos = fStartLeft;
+    fStartLeft += pColRow->m_fActualSize;
+  }
+  FX_FLOAT fStartTop = 0;
+  int32_t iRows = m_Rows.GetSize();
+  for (int32_t j = 0; j < iRows; j++) {
+    CFWL_GridColRow* pColRow = static_cast<CFWL_GridColRow*>(m_Rows[j]);
+    if (!pColRow) {
+      continue;
+    }
+    pColRow->m_fActualPos = fStartTop;
+    fStartTop += pColRow->m_fActualSize;
+  }
+  FX_POSITION ps = m_mapWidgetInfo.GetStartPosition();
+  while (ps) {
+    IFWL_Widget* pWidget = NULL;
+    CFWL_GridWidgetInfo* pInfo = NULL;
+    m_mapWidgetInfo.GetNextAssoc(ps, (void*&)pWidget, (void*&)pInfo);
+    if (!pWidget || !pInfo) {
+      continue;
+    }
+    FX_FLOAT fColumnStart = 0;
+    CFWL_GridColRow* pColumn =
+        reinterpret_cast<CFWL_GridColRow*>(GetColRow(TRUE, pInfo->m_iColumn));
+    if (pColumn) {
+      fColumnStart = pColumn->m_fActualPos;
+    }
+    FX_FLOAT fRowStart = 0;
+    CFWL_GridColRow* pRow =
+        reinterpret_cast<CFWL_GridColRow*>(GetColRow(FALSE, pInfo->m_iRow));
+    if (pRow) {
+      fRowStart = pRow->m_fActualPos;
+    }
+    FX_FLOAT fColumnWidth = 0;
+    if (iColumns > 0) {
+      for (int32_t j = 0; j < pInfo->m_iColumnSpan; j++) {
+        CFWL_GridColRow* pCol = reinterpret_cast<CFWL_GridColRow*>(
+            GetColRow(TRUE, pInfo->m_iColumn + j));
+        if (!pCol) {
+          break;
+        }
+        fColumnWidth += pCol->m_fActualSize;
+      }
+    } else {
+      fColumnWidth = m_pProperties->m_rtWidget.width;
+    }
+    FX_FLOAT fRowHeight = 0;
+    if (iRows > 0) {
+      for (int32_t k = 0; k < pInfo->m_iRowSpan; k++) {
+        CFWL_GridColRow* pR = reinterpret_cast<CFWL_GridColRow*>(
+            GetColRow(FALSE, pInfo->m_iRow + k));
+        if (!pR) {
+          break;
+        }
+        fRowHeight += pR->m_fActualSize;
+      }
+    } else {
+      fRowHeight = m_pProperties->m_rtWidget.height;
+    }
+    FX_FLOAT fLeftMargin = 0, fRightMargin = 0;
+    FX_BOOL bLeftMargin =
+        GetWidgetMargin(pWidget, FWL_GRIDMARGIN_Left, fLeftMargin);
+    FX_BOOL bRightMargin =
+        GetWidgetMargin(pWidget, FWL_GRIDMARGIN_Right, fRightMargin);
+    FX_FLOAT fTopMargin = 0, fBottomMargin = 0;
+    FX_BOOL bTopMargin =
+        GetWidgetMargin(pWidget, FWL_GRIDMARGIN_Top, fTopMargin);
+    FX_BOOL bBottomMargin =
+        GetWidgetMargin(pWidget, FWL_GRIDMARGIN_Bottom, fBottomMargin);
+    if (pInfo->m_Size[FWL_GRIDSIZE_Width].eUnit == FWL_GRIDUNIT_Fixed) {
+      SetWidgetActualWidth(pInfo, pInfo->m_Size[FWL_GRIDSIZE_Width].fLength);
+    } else {
+      if (bLeftMargin && bRightMargin) {
+        SetWidgetActualWidth(pInfo, fColumnWidth - fLeftMargin - fRightMargin);
+      } else {
+        CFX_RectF rtAuto;
+        pWidget->GetWidgetRect(rtAuto, TRUE);
+        SetWidgetActualWidth(pInfo, rtAuto.width);
+      }
+    }
+    if (pInfo->m_Size[FWL_GRIDSIZE_Height].eUnit == FWL_GRIDUNIT_Fixed) {
+      SetWidgetActualHeight(pInfo, pInfo->m_Size[FWL_GRIDSIZE_Height].fLength);
+    } else {
+      if (bTopMargin && bBottomMargin) {
+        SetWidgetActualHeight(pInfo, fRowHeight - fTopMargin - fBottomMargin);
+      } else {
+        CFX_RectF rtAuto;
+        pWidget->GetWidgetRect(rtAuto, TRUE);
+        SetWidgetActualHeight(pInfo, rtAuto.height);
+      }
+    }
+    if (bLeftMargin && bRightMargin &&
+        pInfo->m_Size[FWL_GRIDSIZE_Width].eUnit == FWL_GRIDUNIT_Fixed) {
+      fLeftMargin =
+          fColumnStart + fLeftMargin +
+          (fColumnWidth - fLeftMargin - fRightMargin - pInfo->m_fActualWidth) /
+              2;
+    } else if (bLeftMargin) {
+      fLeftMargin = fColumnStart + fLeftMargin;
+    } else if (bRightMargin) {
+      fLeftMargin =
+          fColumnStart + fColumnWidth - fRightMargin - pInfo->m_fActualWidth;
+    } else {
+      fLeftMargin = fColumnStart;
+    }
+    if (bTopMargin && bBottomMargin &&
+        pInfo->m_Size[FWL_GRIDSIZE_Height].eUnit == FWL_GRIDUNIT_Fixed) {
+      fTopMargin =
+          fRowStart + fTopMargin +
+          (fRowHeight - fTopMargin - fBottomMargin - pInfo->m_fActualHeight) /
+              2;
+    } else if (bTopMargin) {
+      fTopMargin = fRowStart + fTopMargin;
+    } else if (bBottomMargin) {
+      fTopMargin =
+          fRowStart + fRowHeight - fBottomMargin - pInfo->m_fActualHeight;
+    } else {
+      fTopMargin = fRowStart;
+    }
+    CFX_RectF rtWidget, rtOld;
+    rtWidget.Set(fLeftMargin, fTopMargin, pInfo->m_fActualWidth,
+                 pInfo->m_fActualHeight);
+    pWidget->GetWidgetRect(rtOld);
+    if (rtWidget == rtOld) {
+      continue;
+    }
+    pWidget->SetWidgetRect(rtWidget);
+    if (rtWidget.width == rtOld.width && rtWidget.height == rtOld.height) {
+      continue;
+    }
+    pWidget->Update();
+  }
+}
+FX_BOOL CFWL_GridImp::IsGrid(IFWL_Widget* pWidget) {
+  if (!pWidget)
+    return FALSE;
+  return pWidget->GetClassID() == FWL_CLASSHASH_Grid;
+}
+void CFWL_GridImp::SetSpanAutoColRowSize(const CFX_PtrArray& spanAutos,
+                                         FX_FLOAT fTotalSize) {
+  int32_t iAutoColRows = spanAutos.GetSize();
+  if (iAutoColRows < 1) {
+    return;
+  }
+  CFX_PtrArray autoNoMinMaxs;
+  FX_FLOAT fAutoPer = fTotalSize / iAutoColRows;
+  for (int32_t j = 0; j < iAutoColRows; j++) {
+    CFWL_GridColRow* pColumn = static_cast<CFWL_GridColRow*>(spanAutos[j]);
+    FX_FLOAT fOrgSize = pColumn->m_fActualSize;
+    if (SetColRowActualSize(pColumn, pColumn->m_fActualSize + fAutoPer, TRUE)) {
+      autoNoMinMaxs.Add(pColumn);
+    } else {
+      fTotalSize -= pColumn->m_fActualSize - fOrgSize;
+      int32_t iNoMinMax = iAutoColRows - (j + 1 - autoNoMinMaxs.GetSize());
+      if (iNoMinMax > 0 && fTotalSize > 0) {
+        fAutoPer = fTotalSize / iNoMinMax;
+      } else {
+        break;
+      }
+    }
+  }
+  int32_t iNormals = autoNoMinMaxs.GetSize();
+  if (fTotalSize > 0) {
+    if (iNormals == iAutoColRows) {
+      fAutoPer = fTotalSize / iNormals;
+      for (int32_t k = 0; k < iNormals; k++) {
+        CFWL_GridColRow* pColumn =
+            static_cast<CFWL_GridColRow*>(autoNoMinMaxs[k]);
+        pColumn->m_fActualSize += fAutoPer;
+      }
+    } else {
+      SetSpanAutoColRowSize(autoNoMinMaxs, fTotalSize);
+    }
+  } else {
+  }
+}
+void CFWL_GridImp::SetSpanScaledColRowSize(const CFX_PtrArray& spanScaleds,
+                                           FX_FLOAT fTotalSize,
+                                           FX_FLOAT fTotalScaledNum) {
+  int32_t iScaledColRows = spanScaleds.GetSize();
+  if (iScaledColRows < 1) {
+    return;
+  }
+  CFX_PtrArray autoNoMinMaxs;
+  FX_FLOAT fPerSize = fTotalSize / fTotalScaledNum;
+  for (int32_t i = 0; i < iScaledColRows; i++) {
+    CFWL_GridColRow* pColRow = static_cast<CFWL_GridColRow*>(spanScaleds[i]);
+    if (SetColRowActualSize(pColRow, pColRow->m_fActualSize +
+                                         fPerSize * pColRow->m_Size.fLength,
+                            TRUE)) {
+      autoNoMinMaxs.Add(pColRow);
+    } else {
+      fTotalSize -= pColRow->m_fActualSize;
+      fTotalScaledNum -= pColRow->m_Size.fLength;
+      int32_t iNoMinMax = iScaledColRows - (i + 1 - autoNoMinMaxs.GetSize());
+      if (iNoMinMax > 0 && fTotalSize > 0) {
+        fPerSize = fTotalSize / fTotalScaledNum;
+      } else {
+        break;
+      }
+    }
+  }
+  int32_t iNormals = autoNoMinMaxs.GetSize();
+  if (fTotalSize > 0) {
+    if (iNormals == iScaledColRows) {
+      fPerSize = fTotalSize / fTotalScaledNum;
+      for (int32_t j = 0; j < iNormals; j++) {
+        CFWL_GridColRow* pColumn =
+            static_cast<CFWL_GridColRow*>(autoNoMinMaxs[j]);
+        pColumn->m_fActualSize += fPerSize * pColumn->m_Size.fLength;
+      }
+    } else {
+      SetSpanScaledColRowSize(autoNoMinMaxs, fTotalSize, fTotalScaledNum);
+    }
+  } else {
+  }
+}
+void CFWL_GridImp::SetScaledColRowsSize(const CFX_PtrArray& spanScaleds,
+                                        FX_FLOAT fTotalSize,
+                                        FX_FLOAT fTotalScaledNum) {
+  int32_t iScaledColRows = spanScaleds.GetSize();
+  if (iScaledColRows < 1) {
+    return;
+  }
+  CFX_PtrArray autoNoMinMaxs;
+  FX_FLOAT fPerSize = fTotalSize / fTotalScaledNum;
+  for (int32_t i = 0; i < iScaledColRows; i++) {
+    CFWL_GridColRow* pColRow = static_cast<CFWL_GridColRow*>(spanScaleds[i]);
+    if (!pColRow) {
+      continue;
+    }
+    FX_FLOAT fSize = fPerSize * pColRow->m_Size.fLength;
+    FX_FLOAT fOrgSize = pColRow->m_fActualSize;
+    if (SetColRowActualSize(pColRow, fSize, TRUE)) {
+      autoNoMinMaxs.Add(pColRow);
+    } else {
+      fTotalSize -= pColRow->m_fActualSize - fOrgSize;
+      fTotalScaledNum -= pColRow->m_Size.fLength;
+      int32_t iNoMinMax = iScaledColRows - (i + 1 - autoNoMinMaxs.GetSize());
+      if (iNoMinMax > 0 && fTotalSize > 0) {
+        fPerSize = fTotalSize / fTotalScaledNum;
+      } else {
+        break;
+      }
+    }
+  }
+  int32_t iNormals = autoNoMinMaxs.GetSize();
+  if (fTotalSize > 0) {
+    if (iNormals == iScaledColRows) {
+      fPerSize = fTotalSize / fTotalScaledNum;
+      for (int32_t i = 0; i < iNormals; i++) {
+        CFWL_GridColRow* pColRow =
+            static_cast<CFWL_GridColRow*>(autoNoMinMaxs[i]);
+        if (!pColRow) {
+          continue;
+        }
+        FX_FLOAT fSize = fPerSize * pColRow->m_Size.fLength;
+        pColRow->m_fActualSize = fSize;
+      }
+    } else {
+      SetScaledColRowsSize(autoNoMinMaxs, fTotalSize, fTotalScaledNum);
+    }
+  } else {
+  }
+}
+CFWL_GridImpDelegate::CFWL_GridImpDelegate(CFWL_GridImp* pOwner)
+    : m_pOwner(pOwner) {}
+int32_t CFWL_GridImpDelegate::OnProcessMessage(CFWL_Message* pMessage) {
+  if (pMessage->GetClassID() != FWL_MSGHASH_Mouse) {
+    return 0;
+  }
+  CFWL_MsgMouse* pMsg = static_cast<CFWL_MsgMouse*>(pMessage);
+  if (pMsg->m_dwCmd != FWL_MSGMOUSECMD_LButtonDown) {
+    return 0;
+  }
+  return 1;
+}
+FWL_ERR CFWL_GridImpDelegate::OnDrawWidget(CFX_Graphics* pGraphics,
+                                           const CFX_Matrix* pMatrix) {
+  return m_pOwner->DrawWidget(pGraphics, pMatrix);
+}
diff --git a/xfa/fwl/core/fwl_gridimp.h b/xfa/fwl/core/fwl_gridimp.h
new file mode 100644
index 0000000000..fda283f70c
--- /dev/null
+++ b/xfa/fwl/core/fwl_gridimp.h
@@ -0,0 +1,197 @@
+// Copyright 2014 PDFium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
+
+#ifndef XFA_FWL_CORE_FWL_GRIDIMP_H_
+#define XFA_FWL_CORE_FWL_GRIDIMP_H_
+
+#include "xfa/fwl/core/fwl_contentimp.h"
+#include "xfa/include/fwl/core/fwl_app.h"
+#include "xfa/include/fwl/core/fwl_content.h"
+#include "xfa/include/fwl/core/fwl_grid.h"
+
+class CFWL_GridLength {
+ public:
+  CFWL_GridLength() : fLength(0), eUnit(FWL_GRIDUNIT_Fixed) {}
+  CFWL_GridLength(FX_FLOAT fValue, FWL_GRIDUNIT e)
+      : fLength(fValue), eUnit(e) {}
+  FX_FLOAT fLength;
+  FWL_GRIDUNIT eUnit;
+};
+
+class CFWL_GridColRow {
+ public:
+  CFWL_GridColRow()
+      : m_Size(1, FWL_GRIDUNIT_Scaled),
+        m_MinSize(0, FWL_GRIDUNIT_Fixed),
+        m_MaxSize(0, FWL_GRIDUNIT_Infinity),
+        m_fActualSize(0),
+        m_fActualPos(0) {}
+  CFWL_GridLength m_Size;
+  CFWL_GridLength m_MinSize;
+  CFWL_GridLength m_MaxSize;
+  FX_FLOAT m_fActualSize;
+  FX_FLOAT m_fActualPos;
+};
+
+class CFWL_GridWidgetInfo {
+ public:
+  CFWL_GridWidgetInfo()
+      : m_iColumn(0),
+        m_iColumnSpan(1),
+        m_iRow(0),
+        m_iRowSpan(1),
+        m_dwMarginFlag(0),
+        m_fActualWidth(0),
+        m_fActualHeight(0) {
+    m_Size[FWL_GRIDSIZE_Width].eUnit = FWL_GRIDUNIT_Auto;
+    m_Size[FWL_GRIDSIZE_Width].fLength = 0;
+    m_Size[FWL_GRIDSIZE_Height].eUnit = FWL_GRIDUNIT_Auto;
+    m_Size[FWL_GRIDSIZE_Height].fLength = 0;
+    m_Size[FWL_GRIDSIZE_MinWidth].eUnit = FWL_GRIDUNIT_Fixed;
+    m_Size[FWL_GRIDSIZE_MinWidth].fLength = 0;
+    m_Size[FWL_GRIDSIZE_MaxWidth].eUnit = FWL_GRIDUNIT_Infinity;
+    m_Size[FWL_GRIDSIZE_MaxWidth].fLength = 0;
+    m_Size[FWL_GRIDSIZE_MinHeight].eUnit = FWL_GRIDUNIT_Fixed;
+    m_Size[FWL_GRIDSIZE_MinHeight].fLength = 0;
+    m_Size[FWL_GRIDSIZE_MaxHeight].eUnit = FWL_GRIDUNIT_Infinity;
+    m_Size[FWL_GRIDSIZE_MaxHeight].fLength = 0;
+    m_Margin[0] = m_Margin[1] = m_Margin[2] = m_Margin[3] = 0;
+  }
+  int32_t m_iColumn;
+  int32_t m_iColumnSpan;
+  int32_t m_iRow;
+  int32_t m_iRowSpan;
+  CFWL_GridLength m_Size[6];
+  FX_DWORD m_dwMarginFlag;
+  FX_FLOAT m_Margin[4];
+  FX_FLOAT m_fActualWidth;
+  FX_FLOAT m_fActualHeight;
+};
+
+class CFWL_GridImp : public CFWL_ContentImp {
+ public:
+  CFWL_GridImp(const CFWL_WidgetImpProperties& properties, IFWL_Widget* pOuter);
+  virtual ~CFWL_GridImp();
+  virtual FWL_ERR GetClassName(CFX_WideString& wsClass) const;
+  virtual FX_DWORD GetClassID() const;
+  virtual FWL_ERR Initialize();
+  virtual FWL_ERR Finalize();
+  virtual FWL_ERR GetWidgetRect(CFX_RectF& rect, FX_BOOL bAutoSize = FALSE);
+  virtual FWL_ERR SetWidgetRect(const CFX_RectF& rect);
+  virtual FWL_ERR Update();
+  virtual FWL_ERR DrawWidget(CFX_Graphics* pGraphics,
+                             const CFX_Matrix* pMatrix = NULL);
+
+  virtual FWL_ERR InsertWidget(IFWL_Widget* pChild, int32_t nIndex = -1);
+  virtual FWL_ERR RemoveWidget(IFWL_Widget* pWidget);
+  virtual FWL_HGRIDCOLROW InsertColRow(FX_BOOL bColumn, int32_t nIndex = -1);
+  virtual int32_t CountColRows(FX_BOOL bColumn);
+  virtual FWL_HGRIDCOLROW GetColRow(FX_BOOL bColumn, int32_t nIndex);
+  virtual int32_t GetIndex(FWL_HGRIDCOLROW hColRow);
+  virtual FX_FLOAT GetSize(FWL_HGRIDCOLROW hColRow, FWL_GRIDUNIT& eUnit);
+  virtual FWL_ERR SetSize(FWL_HGRIDCOLROW hColRow,
+                          FX_FLOAT fSize,
+                          FWL_GRIDUNIT eUnit);
+  FX_FLOAT GetMinSize(FWL_HGRIDCOLROW hColRow, FWL_GRIDUNIT& eUnit);
+  FWL_ERR SetMinSize(FWL_HGRIDCOLROW hColRow,
+                     FX_FLOAT fSize,
+                     FWL_GRIDUNIT eUnit);
+  FX_FLOAT GetMaxSize(FWL_HGRIDCOLROW hColRow, FWL_GRIDUNIT& eUnit);
+  FWL_ERR SetMaxSize(FWL_HGRIDCOLROW hColRow,
+                     FX_FLOAT fSize,
+                     FWL_GRIDUNIT eUnit);
+  virtual FX_BOOL DeleteColRow(FWL_HGRIDCOLROW hColRow);
+  virtual FX_BOOL IsColumn(FWL_HGRIDCOLROW hColRow);
+  virtual int32_t GetWidgetPos(IFWL_Widget* pWidget, FX_BOOL bColumn);
+  virtual FWL_ERR SetWidgetPos(IFWL_Widget* pWidget,
+                               int32_t iPos,
+                               FX_BOOL bColumn);
+  virtual int32_t GetWidgetSpan(IFWL_Widget* pWidget, FX_BOOL bColumn);
+  virtual FWL_ERR SetWidgetSpan(IFWL_Widget* pWidget,
+                                int32_t iSpan,
+                                FX_BOOL bColumn);
+  virtual FX_FLOAT GetWidgetSize(IFWL_Widget* pWidget,
+                                 FWL_GRIDSIZE eSize,
+                                 FWL_GRIDUNIT& eUnit);
+  virtual FWL_ERR SetWidgetSize(IFWL_Widget* pWidget,
+                                FWL_GRIDSIZE eSize,
+                                FX_FLOAT fSize,
+                                FWL_GRIDUNIT eUit);
+  virtual FX_BOOL GetWidgetMargin(IFWL_Widget* pWidget,
+                                  FWL_GRIDMARGIN eMargin,
+                                  FX_FLOAT& fMargin);
+  virtual FWL_ERR SetWidgetMargin(IFWL_Widget* pWidget,
+                                  FWL_GRIDMARGIN eMargin,
+                                  FX_FLOAT fMargin);
+  virtual FWL_ERR RemoveWidgetMargin(IFWL_Widget* pWidget,
+                                     FWL_GRIDMARGIN eMargin);
+  virtual FX_FLOAT GetGridSize(FWL_GRIDSIZE eSize, FWL_GRIDUNIT& eUnit);
+  virtual FWL_ERR SetGridSize(FWL_GRIDSIZE eSize,
+                              FX_FLOAT fSize,
+                              FWL_GRIDUNIT eUit);
+
+ protected:
+  CFWL_GridWidgetInfo* GetWidgetInfo(IFWL_Widget* pWidget);
+  void ProcFixedColRow(CFWL_GridColRow* pColRow,
+                       int32_t nIndex,
+                       FX_FLOAT fColRowSize,
+                       FX_BOOL bColumn);
+  void ProcAutoColRow(CFWL_GridColRow* pColRow,
+                      int32_t nIndex,
+                      FX_BOOL bColumn);
+  void ProcScaledColRow(CFWL_GridColRow* pColRow,
+                        int32_t nIndex,
+                        FX_FLOAT fColRowSize,
+                        FX_BOOL bColumn);
+  void CalcWidgetWidth(IFWL_Widget* pWidget,
+                       CFWL_GridWidgetInfo* pInfo,
+                       FX_FLOAT fColunmWidth);
+  void CalcWidgetHeigt(IFWL_Widget* pWidget,
+                       CFWL_GridWidgetInfo* pInfo,
+                       FX_FLOAT fRowHeigt);
+  FX_FLOAT CalcAutoColumnWidgetWidth(IFWL_Widget* pWidget,
+                                     CFWL_GridWidgetInfo* pInfo);
+  FX_FLOAT CalcAutoColumnWidgetHeight(IFWL_Widget* pWidget,
+                                      CFWL_GridWidgetInfo* pInfo);
+  FX_FLOAT ProcessColumns(FX_FLOAT fWidth);
+  FX_FLOAT ProcessRows(FX_FLOAT fHeight);
+  FX_FLOAT ProcessUnCertainColumns();
+  FX_FLOAT ProcessUnCertainRows();
+  FX_BOOL SetColRowActualSize(CFWL_GridColRow* pColRow,
+                              FX_FLOAT fSize,
+                              FX_BOOL bSetBeyond = FALSE);
+  FX_FLOAT SetWidgetActualWidth(CFWL_GridWidgetInfo* pInfo, FX_FLOAT fWidth);
+  FX_FLOAT SetWidgetActualHeight(CFWL_GridWidgetInfo* pInfo, FX_FLOAT fHeight);
+  void SetAllWidgetsRect();
+  FX_BOOL IsGrid(IFWL_Widget* pWidget);
+  void SetSpanAutoColRowSize(const CFX_PtrArray& spanAutos,
+                             FX_FLOAT fTotalSize);
+  void SetSpanScaledColRowSize(const CFX_PtrArray& spanScaleds,
+                               FX_FLOAT fTotalSize,
+                               FX_FLOAT fTotalScaledNum);
+  void SetScaledColRowsSize(const CFX_PtrArray& spanScaleds,
+                            FX_FLOAT fTotalSize,
+                            FX_FLOAT fTotalScaledNum);
+  CFX_PtrArray m_Rows;
+  CFX_PtrArray m_Columns;
+  CFX_PtrArray m_Widgets;
+  CFX_MapPtrToPtr m_mapWidgetInfo;
+  CFWL_GridLength m_Size[6];
+  friend class CFWL_GridImpDelegate;
+};
+
+class CFWL_GridImpDelegate : public CFWL_WidgetImpDelegate {
+ public:
+  CFWL_GridImpDelegate(CFWL_GridImp* pOwner);
+  int32_t OnProcessMessage(CFWL_Message* pMessage) override;
+  FWL_ERR OnDrawWidget(CFX_Graphics* pGraphics,
+                       const CFX_Matrix* pMatrix = NULL) override;
+
+ protected:
+  CFWL_GridImp* m_pOwner;
+};
+
+#endif  // XFA_FWL_CORE_FWL_GRIDIMP_H_
diff --git a/xfa/fwl/core/fwl_noteimp.cpp b/xfa/fwl/core/fwl_noteimp.cpp
new file mode 100644
index 0000000000..cadace4fca
--- /dev/null
+++ b/xfa/fwl/core/fwl_noteimp.cpp
@@ -0,0 +1,1097 @@
+// 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 "xfa/fwl/core/fwl_noteimp.h"
+
+#include "core/include/fxcrt/fx_ext.h"
+#include "xfa/fwl/basewidget/fwl_tooltipctrlimp.h"
+#include "xfa/fwl/core/fwl_appimp.h"
+#include "xfa/fwl/core/fwl_formimp.h"
+#include "xfa/fwl/core/fwl_panelimp.h"
+#include "xfa/fwl/core/fwl_targetimp.h"
+#include "xfa/fwl/core/fwl_threadimp.h"
+#include "xfa/fwl/core/fwl_widgetimp.h"
+#include "xfa/fwl/core/fwl_widgetmgrimp.h"
+#include "xfa/include/fwl/adapter/fwl_adapterwidgetmgr.h"
+#include "xfa/include/fwl/basewidget/fwl_tooltipctrl.h"
+#include "xfa/include/fwl/core/fwl_app.h"
+#include "xfa/include/fwl/core/fwl_grid.h"
+
+CFWL_NoteLoop::CFWL_NoteLoop(CFWL_WidgetImp* pForm)
+    : m_pForm(pForm), m_bContinueModal(TRUE) {}
+FX_BOOL CFWL_NoteLoop::PreProcessMessage(CFWL_Message* pMessage) {
+  if (!m_pForm) {
+    return FALSE;
+  }
+  return TranslateAccelerator(pMessage);
+}
+FWL_ERR CFWL_NoteLoop::Idle(int32_t count) {
+#if (_FX_OS_ == _FX_WIN32_DESKTOP_)
+  if (count <= 0) {
+#endif
+    CFWL_EvtIdle ev;
+    IFWL_App* pApp = FWL_GetApp();
+    if (!pApp)
+      return FWL_ERR_Indefinite;
+    IFWL_NoteDriver* pDriver = pApp->GetNoteDriver();
+    if (!pDriver)
+      return FWL_ERR_Indefinite;
+    pDriver->SendNote(&ev);
+#if (_FX_OS_ == _FX_WIN32_DESKTOP_)
+  }
+#endif
+  return FWL_ERR_Indefinite;
+}
+CFWL_WidgetImp* CFWL_NoteLoop::GetForm() {
+  return m_pForm;
+}
+FX_BOOL CFWL_NoteLoop::ContinueModal() {
+  return m_bContinueModal;
+}
+FWL_ERR CFWL_NoteLoop::EndModalLoop() {
+  m_bContinueModal = FALSE;
+#if (_FX_OS_ == _FX_MACOSX_)
+  CFWL_WidgetMgr* pWidgetMgr = static_cast<CFWL_WidgetMgr*>(FWL_GetWidgetMgr());
+  IFWL_AdapterWidgetMgr* adapterWidgetMgr = pWidgetMgr->GetAdapterWidgetMgr();
+  adapterWidgetMgr->EndLoop();
+#endif
+  return FWL_ERR_Succeeded;
+}
+FX_BOOL CFWL_NoteLoop::TranslateAccelerator(CFWL_Message* pMessage) {
+  if (pMessage->GetClassID() != FWL_MSGHASH_Key) {
+    return FALSE;
+  }
+  CFWL_MsgKey* pMsgKey = static_cast<CFWL_MsgKey*>(pMessage);
+  if (pMsgKey->m_dwCmd != FWL_MSGKEYCMD_KeyDown) {
+    return FALSE;
+  }
+  CFX_MapAccelerators& accel =
+      static_cast<CFWL_FormImp*>(m_pForm)->GetAccelerator();
+  FX_POSITION pos = accel.GetStartPosition();
+  if (!pos) {
+    return FALSE;
+  }
+  FX_DWORD vrKey, rValue;
+  while (pos) {
+    accel.GetNextAssoc(pos, vrKey, rValue);
+    FX_DWORD dwFlags = (vrKey & 0xFF00) >> 8;
+    FX_DWORD m_dwKeyCode = vrKey & 0x00FF;
+    if (pMsgKey->m_dwFlags == dwFlags && pMsgKey->m_dwKeyCode == m_dwKeyCode) {
+      GenerateCommondEvent(rValue);
+      return TRUE;
+    }
+  }
+  return FALSE;
+}
+FWL_ERR CFWL_NoteLoop::SetMainForm(CFWL_WidgetImp* pForm) {
+  m_pForm = pForm;
+  return FWL_ERR_Succeeded;
+}
+void CFWL_NoteLoop::GenerateCommondEvent(FX_DWORD dwCommand) {
+  CFWL_EvtMenuCommand ev;
+  ev.m_iCommand = dwCommand;
+  IFWL_NoteThread* pThread = m_pForm->GetOwnerThread();
+  if (!pThread)
+    return;
+  IFWL_NoteDriver* pDriver = pThread->GetNoteDriver();
+  if (!pDriver)
+    return;
+  pDriver->SendNote(&ev);
+}
+CFWL_NoteDriver::CFWL_NoteDriver()
+    : m_sendEventCalled(0),
+      m_maxSize(500),
+      m_bFullScreen(FALSE),
+      m_pHover(nullptr),
+      m_pFocus(nullptr),
+      m_pGrab(nullptr),
+      m_hook(nullptr) {
+  m_pNoteLoop = new CFWL_NoteLoop;
+  PushNoteLoop(m_pNoteLoop);
+}
+CFWL_NoteDriver::~CFWL_NoteDriver() {
+  delete m_pNoteLoop;
+  ClearInvalidEventTargets(TRUE);
+}
+FX_BOOL CFWL_NoteDriver::SendNote(CFWL_Note* pNote) {
+  if (pNote->IsEvent()) {
+    int32_t iCount = m_eventTargets.GetCount();
+    if (iCount < 1) {
+      return TRUE;
+    }
+    if (FWL_EVTHASH_Mouse == static_cast<CFWL_Event*>(pNote)->GetClassID()) {
+      CFWL_EvtMouse* pMouse = static_cast<CFWL_EvtMouse*>(pNote);
+      if (FWL_MSGMOUSECMD_MouseHover == pMouse->m_dwCmd) {
+        if (m_pNoteLoop->GetForm() &&
+            CFWL_ToolTipContainer::getInstance()->ProcessEnter(
+                pMouse, m_pNoteLoop->GetForm()->GetInterface())) {
+        }
+      } else if (FWL_MSGMOUSECMD_MouseLeave == pMouse->m_dwCmd) {
+        if (CFWL_ToolTipContainer::getInstance()->ProcessLeave(pMouse)) {
+        }
+      } else if ((FWL_MSGMOUSECMD_LButtonDown <= pMouse->m_dwCmd) &&
+                 (FWL_MSGMOUSECMD_MButtonDblClk >= pMouse->m_dwCmd)) {
+        if (CFWL_ToolTipContainer::getInstance()->ProcessLeave(pMouse)) {
+        }
+      }
+    }
+    m_sendEventCalled++;
+    FX_POSITION pos = m_eventTargets.GetStartPosition();
+    while (pos) {
+      void* key = NULL;
+      CFWL_EventTarget* pEventTarget;
+      m_eventTargets.GetNextAssoc(pos, key, (void*&)pEventTarget);
+      if (pEventTarget && !pEventTarget->IsInvalid()) {
+        pEventTarget->ProcessEvent(static_cast<CFWL_Event*>(pNote));
+      }
+    }
+    m_sendEventCalled--;
+  } else {
+    if (!pNote->m_pDstTarget)
+      return FALSE;
+    IFWL_WidgetDelegate* pDelegate = pNote->m_pDstTarget->SetDelegate(NULL);
+    if (pDelegate) {
+      pDelegate->OnProcessMessage(static_cast<CFWL_Message*>(pNote));
+    }
+  }
+  return TRUE;
+}
+extern void FWL_PostMessageToMainRoop(CFWL_Message* pMessage);
+FX_BOOL CFWL_NoteDriver::PostMessage(CFWL_Message* pMessage) {
+  FWL_PostMessageToMainRoop(pMessage);
+  return TRUE;
+}
+#define FWL_NoteDriver_EventKey 1100
+FWL_ERR CFWL_NoteDriver::RegisterEventTarget(IFWL_Widget* pListener,
+                                             IFWL_Widget* pEventSource,
+                                             FX_DWORD dwFilter) {
+  FX_DWORD dwkey = (FX_DWORD)(uintptr_t)pListener->GetPrivateData(
+      (void*)(uintptr_t)FWL_NoteDriver_EventKey);
+  if (dwkey == 0) {
+    void* random = FX_Random_MT_Start(0);
+    dwkey = rand();
+    FX_Random_MT_Close(random);
+    pListener->SetPrivateData((void*)(uintptr_t)FWL_NoteDriver_EventKey,
+                              (void*)(uintptr_t)dwkey, NULL);
+  }
+  CFWL_EventTarget* value = NULL;
+  if (!m_eventTargets.Lookup((void*)(uintptr_t)dwkey, (void*&)value)) {
+    value = new CFWL_EventTarget(this, pListener);
+    m_eventTargets.SetAt((void*)(uintptr_t)dwkey, value);
+  }
+  value->SetEventSource(pEventSource, dwFilter);
+  return FWL_ERR_Succeeded;
+}
+FWL_ERR CFWL_NoteDriver::UnregisterEventTarget(IFWL_Widget* pListener) {
+  FX_DWORD dwkey = (FX_DWORD)(uintptr_t)pListener->GetPrivateData(
+      (void*)(uintptr_t)FWL_NoteDriver_EventKey);
+  if (dwkey == 0) {
+    return FWL_ERR_Indefinite;
+  }
+  CFWL_EventTarget* value = NULL;
+  if (m_eventTargets.Lookup((void*)(uintptr_t)dwkey, (void*&)value)) {
+    value->FlagInvalid();
+  }
+  return FWL_ERR_Succeeded;
+}
+void CFWL_NoteDriver::ClearEventTargets(FX_BOOL bRemoveAll) {
+  ClearInvalidEventTargets(bRemoveAll);
+}
+int32_t CFWL_NoteDriver::GetQueueMaxSize() const {
+  return m_maxSize;
+}
+FWL_ERR CFWL_NoteDriver::SetQueueMaxSize(const int32_t size) {
+  m_maxSize = size;
+  return FWL_ERR_Succeeded;
+}
+IFWL_NoteThread* CFWL_NoteDriver::GetOwnerThread() const {
+  return FWL_GetApp();
+}
+FWL_ERR CFWL_NoteDriver::PushNoteLoop(IFWL_NoteLoop* pNoteLoop) {
+  m_noteLoopQueue.Add(pNoteLoop);
+  return FWL_ERR_Succeeded;
+}
+IFWL_NoteLoop* CFWL_NoteDriver::PopNoteLoop() {
+  int32_t pos = m_noteLoopQueue.GetSize();
+  if (pos <= 0)
+    return NULL;
+  IFWL_NoteLoop* p =
+      static_cast<IFWL_NoteLoop*>(m_noteLoopQueue.GetAt(pos - 1));
+  m_noteLoopQueue.RemoveAt(pos - 1);
+  return p;
+}
+FX_BOOL CFWL_NoteDriver::SetFocus(IFWL_Widget* pFocus, FX_BOOL bNotify) {
+  if (m_pFocus == pFocus) {
+    return TRUE;
+  }
+  IFWL_Widget* pPrev = m_pFocus;
+  m_pFocus = pFocus;
+  if (pPrev) {
+    CFWL_MsgKillFocus ms;
+    ms.m_pDstTarget = pPrev;
+    ms.m_pSrcTarget = pPrev;
+    if (bNotify) {
+      ms.m_dwExtend = 1;
+    }
+    IFWL_WidgetDelegate* pDelegate = pPrev->SetDelegate(NULL);
+    if (pDelegate) {
+      pDelegate->OnProcessMessage(&ms);
+    }
+  }
+  if (pFocus) {
+    IFWL_Widget* pWidget =
+        FWL_GetWidgetMgr()->GetWidget(pFocus, FWL_WGTRELATION_SystemForm);
+    CFWL_FormImp* pForm =
+        pWidget ? static_cast<CFWL_FormImp*>(pWidget->GetImpl()) : nullptr;
+    if (pForm) {
+      CFWL_WidgetImp* pNewFocus =
+          static_cast<CFWL_WidgetImp*>(pFocus->GetImpl());
+      pForm->SetSubFocus(pNewFocus);
+    }
+    CFWL_MsgSetFocus ms;
+    ms.m_pDstTarget = pFocus;
+    if (bNotify) {
+      ms.m_dwExtend = 1;
+    }
+    IFWL_WidgetDelegate* pDelegate = pFocus->SetDelegate(NULL);
+    if (pDelegate) {
+      pDelegate->OnProcessMessage(&ms);
+    }
+  }
+  return TRUE;
+}
+FWL_ERR CFWL_NoteDriver::Run() {
+  CFWL_WidgetMgr* pWidgetMgr = static_cast<CFWL_WidgetMgr*>(FWL_GetWidgetMgr());
+  if (!pWidgetMgr)
+    return FWL_ERR_Indefinite;
+#if (_FX_OS_ == _FX_MACOSX_)
+  IFWL_AdapterWidgetMgr* adapterWidgetMgr = pWidgetMgr->GetAdapterWidgetMgr();
+  CFWL_NoteLoop* pTopLoop = GetTopLoop();
+  if (pTopLoop) {
+    CFWL_WidgetImp* formImp = pTopLoop->GetForm();
+    if (formImp) {
+      IFWL_Widget* pForm = formImp->GetInterface();
+      adapterWidgetMgr->RunLoop(pForm);
+    }
+  }
+#elif(_FX_OS_ == _FX_WIN32_DESKTOP_ || _FX_OS_ == _FX_WIN64_)
+    FX_BOOL bIdle = TRUE;
+    int32_t iIdleCount = 0;
+    CFWL_NoteLoop* pTopLoop = NULL;
+    for (;;) {
+      pTopLoop = GetTopLoop();
+      if (!pTopLoop || !pTopLoop->ContinueModal()) {
+        break;
+      }
+      if (UnqueueMessage(pTopLoop)) {
+        continue;
+      }
+      while (bIdle && !(pWidgetMgr->CheckMessage_Native())) {
+        if (FWL_ERR_Indefinite == pTopLoop->Idle(iIdleCount++)) {
+          bIdle = FALSE;
+        }
+      }
+      do {
+        if (FWL_ERR_Indefinite == pWidgetMgr->DispatchMessage_Native()) {
+          break;
+        }
+        if (pWidgetMgr->IsIdleMessage_Native()) {
+          bIdle = TRUE;
+          iIdleCount = 0;
+        }
+      } while (pWidgetMgr->CheckMessage_Native());
+    }
+#elif(_FX_OS_ == _FX_LINUX_DESKTOP_)
+    CFWL_NoteLoop* pTopLoop = NULL;
+    for (;;) {
+      pTopLoop = GetTopLoop();
+      if (!pTopLoop || !pTopLoop->ContinueModal()) {
+        break;
+      }
+      if (UnqueueMessage(pTopLoop)) {
+        continue;
+      }
+      if (pWidgetMgr->CheckMessage_Native()) {
+        pWidgetMgr->DispatchMessage_Native();
+      }
+    }
+#endif
+  return FWL_ERR_Succeeded;
+}
+IFWL_Widget* CFWL_NoteDriver::GetFocus() {
+  return m_pFocus;
+}
+IFWL_Widget* CFWL_NoteDriver::GetHover() {
+  return m_pHover;
+}
+void CFWL_NoteDriver::SetHover(IFWL_Widget* pHover) {
+  m_pHover = pHover;
+}
+void CFWL_NoteDriver::SetGrab(IFWL_Widget* pGrab, FX_BOOL bSet) {
+  m_pGrab = bSet ? pGrab : NULL;
+}
+void CFWL_NoteDriver::NotifyTargetHide(IFWL_Widget* pNoteTarget) {
+  if (m_pFocus == pNoteTarget) {
+    m_pFocus = NULL;
+  }
+  if (m_pHover == pNoteTarget) {
+    m_pHover = NULL;
+  }
+  if (m_pGrab == pNoteTarget) {
+    m_pGrab = NULL;
+  }
+}
+void CFWL_NoteDriver::NotifyTargetDestroy(IFWL_Widget* pNoteTarget) {
+  if (m_pFocus == pNoteTarget) {
+    m_pFocus = NULL;
+  }
+  if (m_pHover == pNoteTarget) {
+    m_pHover = NULL;
+  }
+  if (m_pGrab == pNoteTarget) {
+    m_pGrab = NULL;
+  }
+  UnregisterEventTarget(pNoteTarget);
+  int32_t count = m_forms.GetSize();
+  for (int32_t nIndex = 0; nIndex < count; nIndex++) {
+    CFWL_FormImp* pForm = static_cast<CFWL_FormImp*>(m_forms[nIndex]);
+    if (!pForm) {
+      continue;
+    }
+    CFWL_WidgetImp* pSubFocus = pForm->GetSubFocus();
+    if (!pSubFocus)
+      return;
+    if (pSubFocus && pSubFocus->GetInterface() == pNoteTarget) {
+      pForm->SetSubFocus(NULL);
+    }
+  }
+}
+void CFWL_NoteDriver::NotifyFullScreenMode(IFWL_Widget* pNoteTarget,
+                                           FX_BOOL bFullScreen) {
+  m_bFullScreen = bFullScreen;
+}
+FWL_ERR CFWL_NoteDriver::RegisterForm(CFWL_WidgetImp* pForm) {
+  if (!pForm)
+    return FWL_ERR_Indefinite;
+  if (m_forms.Find(pForm) >= 0) {
+    return FWL_ERR_Indefinite;
+  }
+  m_forms.Add(pForm);
+  if (m_forms.GetSize() == 1) {
+    CFWL_NoteLoop* pLoop =
+        static_cast<CFWL_NoteLoop*>(m_noteLoopQueue.GetAt(0));
+    if (!pLoop)
+      return FWL_ERR_Indefinite;
+    pLoop->SetMainForm(pForm);
+  }
+  return FWL_ERR_Succeeded;
+}
+FWL_ERR CFWL_NoteDriver::UnRegisterForm(CFWL_WidgetImp* pForm) {
+  if (!pForm)
+    return FWL_ERR_Indefinite;
+  int32_t nIndex = m_forms.Find(pForm);
+  if (nIndex < 0) {
+    return FWL_ERR_Indefinite;
+  }
+  m_forms.RemoveAt(nIndex);
+  return FWL_ERR_Succeeded;
+}
+FX_BOOL CFWL_NoteDriver::QueueMessage(CFWL_Message* pMessage) {
+  pMessage->Retain();
+  m_noteQueue.Add(pMessage);
+  return TRUE;
+}
+FX_BOOL CFWL_NoteDriver::UnqueueMessage(CFWL_NoteLoop* pNoteLoop) {
+  if (m_noteQueue.GetSize() < 1) {
+    return FALSE;
+  }
+  CFWL_Message* pMessage = static_cast<CFWL_Message*>(m_noteQueue[0]);
+  m_noteQueue.RemoveAt(0);
+  if (!IsValidMessage(pMessage)) {
+    pMessage->Release();
+    return TRUE;
+  }
+  FX_BOOL bHookMessage = FALSE;
+  if (m_hook) {
+    bHookMessage = (*m_hook)(pMessage, m_hookInfo);
+  }
+  if (!bHookMessage && !pNoteLoop->PreProcessMessage(pMessage)) {
+    ProcessMessage(pMessage);
+  }
+  pMessage->Release();
+  return TRUE;
+}
+CFWL_NoteLoop* CFWL_NoteDriver::GetTopLoop() {
+  int32_t size = m_noteLoopQueue.GetSize();
+  if (size <= 0)
+    return NULL;
+  return static_cast<CFWL_NoteLoop*>(m_noteLoopQueue[size - 1]);
+}
+int32_t CFWL_NoteDriver::CountLoop() {
+  return m_noteLoopQueue.GetSize();
+}
+void CFWL_NoteDriver::SetHook(FWLMessageHookCallback callback, void* info) {
+  m_hook = callback;
+  m_hookInfo = info;
+}
+FX_BOOL CFWL_NoteDriver::ProcessMessage(CFWL_Message* pMessage) {
+  CFWL_WidgetMgr* pWidgetMgr = static_cast<CFWL_WidgetMgr*>(FWL_GetWidgetMgr());
+  IFWL_Widget* pMessageForm = pWidgetMgr->IsFormDisabled()
+                                  ? pMessage->m_pDstTarget
+                                  : GetMessageForm(pMessage->m_pDstTarget);
+  if (!pMessageForm)
+    return FALSE;
+  if (DispatchMessage(pMessage, pMessageForm)) {
+    if (pMessage->GetClassID() == FWL_MSGHASH_Mouse) {
+      MouseSecondary(static_cast<CFWL_MsgMouse*>(pMessage));
+    }
+    return TRUE;
+  }
+  return FALSE;
+}
+FX_BOOL CFWL_NoteDriver::DispatchMessage(CFWL_Message* pMessage,
+                                         IFWL_Widget* pMessageForm) {
+  FX_BOOL bRet = FALSE;
+  switch (pMessage->GetClassID()) {
+    case FWL_MSGHASH_Activate: {
+      bRet = DoActivate(static_cast<CFWL_MsgActivate*>(pMessage), pMessageForm);
+      break;
+    }
+    case FWL_MSGHASH_Deactivate: {
+      bRet = DoDeactivate(static_cast<CFWL_MsgDeactivate*>(pMessage),
+                          pMessageForm);
+      break;
+    }
+    case FWL_MSGHASH_SetFocus: {
+      bRet = DoSetFocus(static_cast<CFWL_MsgSetFocus*>(pMessage), pMessageForm);
+      break;
+    }
+    case FWL_MSGHASH_KillFocus: {
+      bRet =
+          DoKillFocus(static_cast<CFWL_MsgKillFocus*>(pMessage), pMessageForm);
+      break;
+    }
+    case FWL_MSGHASH_Key: {
+      bRet = DoKey(static_cast<CFWL_MsgKey*>(pMessage), pMessageForm);
+      break;
+    }
+    case FWL_MSGHASH_Mouse: {
+      bRet = DoMouse(static_cast<CFWL_MsgMouse*>(pMessage), pMessageForm);
+      break;
+    }
+    case FWL_MSGHASH_MouseWheel: {
+      bRet = DoWheel(static_cast<CFWL_MsgMouseWheel*>(pMessage), pMessageForm);
+      break;
+    }
+    case FWL_MSGHASH_Size: {
+      bRet = DoSize(static_cast<CFWL_MsgSize*>(pMessage));
+      break;
+    }
+    case FWL_MSGHASH_Cursor: {
+      bRet = TRUE;
+      break;
+    }
+    case FWL_MSGHASH_WindowMove: {
+      bRet = DoWindowMove(static_cast<CFWL_MsgWindowMove*>(pMessage),
+                          pMessageForm);
+      break;
+    }
+    case FWL_MSGHASH_DropFiles: {
+      bRet =
+          DoDragFiles(static_cast<CFWL_MsgDropFiles*>(pMessage), pMessageForm);
+      break;
+    }
+    default: {
+      bRet = TRUE;
+      break;
+    }
+  }
+  if (bRet) {
+    IFWL_WidgetDelegate* pDelegate = pMessage->m_pDstTarget->SetDelegate(NULL);
+    if (pDelegate) {
+      pDelegate->OnProcessMessage(pMessage);
+    }
+  }
+  return bRet;
+}
+FX_BOOL CFWL_NoteDriver::DoActivate(CFWL_MsgActivate* pMsg,
+                                    IFWL_Widget* pMessageForm) {
+  if (m_bFullScreen) {
+    return FALSE;
+  }
+  pMsg->m_pDstTarget = pMessageForm;
+  return (pMsg->m_pDstTarget)->GetStates() & FWL_WGTSTATE_Deactivated;
+}
+FX_BOOL CFWL_NoteDriver::DoDeactivate(CFWL_MsgDeactivate* pMsg,
+                                      IFWL_Widget* pMessageForm) {
+  if (m_bFullScreen) {
+    return FALSE;
+  }
+  int32_t iTrackLoop = m_noteLoopQueue.GetSize();
+  if (iTrackLoop <= 0)
+    return FALSE;
+  if (iTrackLoop == 1) {
+    if (pMessageForm->IsInstance(FX_WSTRC(L"FWL_FORMPROXY"))) {
+      return FALSE;
+    }
+    if (pMsg->m_pSrcTarget &&
+        pMsg->m_pSrcTarget->IsInstance(FX_WSTRC(L"FWL_FORMPROXY"))) {
+      return FALSE;
+    }
+    if (pMsg->m_pSrcTarget && pMsg->m_pSrcTarget->GetClassID() == 1111984755) {
+      return FALSE;
+    }
+    return TRUE;
+  }
+  IFWL_Widget* pDst = pMsg->m_pDstTarget;
+  if (!pDst)
+    return FALSE;
+#if (_FX_OS_ == _FX_MACOSX_)
+  if (pDst == pMessageForm && pDst->IsInstance(L"FWL_FORMPROXY")) {
+    return TRUE;
+  }
+#endif
+  return pDst != pMessageForm &&
+         !pDst->IsInstance(FX_WSTRC(L"FWL_FORMPROXY")) &&
+         !pMessageForm->IsInstance(FX_WSTRC(L"FWL_FORMPROXY"));
+}
+FX_BOOL CFWL_NoteDriver::DoSetFocus(CFWL_MsgSetFocus* pMsg,
+                                    IFWL_Widget* pMessageForm) {
+  CFWL_WidgetMgr* pWidgetMgr = static_cast<CFWL_WidgetMgr*>(FWL_GetWidgetMgr());
+  if (pWidgetMgr->IsFormDisabled()) {
+    m_pFocus = pMsg->m_pDstTarget;
+    return TRUE;
+  } else {
+    IFWL_Widget* pWidget = pMsg->m_pDstTarget;
+    CFWL_FormImp* pForm =
+        pWidget ? static_cast<CFWL_FormImp*>(pWidget->GetImpl()) : nullptr;
+    if (pForm) {
+      CFWL_WidgetImp* pSubFocus = pForm->GetSubFocus();
+      if (pSubFocus && ((pSubFocus->GetStates() & FWL_WGTSTATE_Focused) == 0)) {
+        pMsg->m_pDstTarget = pSubFocus->GetInterface();
+        if (m_pFocus != pMsg->m_pDstTarget) {
+          m_pFocus = pMsg->m_pDstTarget;
+          return TRUE;
+        }
+      }
+    }
+  }
+  return FALSE;
+}
+FX_BOOL CFWL_NoteDriver::DoKillFocus(CFWL_MsgKillFocus* pMsg,
+                                     IFWL_Widget* pMessageForm) {
+  CFWL_WidgetMgr* pWidgetMgr = static_cast<CFWL_WidgetMgr*>(FWL_GetWidgetMgr());
+  if (pWidgetMgr->IsFormDisabled()) {
+    if (m_pFocus == pMsg->m_pDstTarget) {
+      m_pFocus = NULL;
+    }
+    return TRUE;
+  }
+  IFWL_Widget* pWidget = pMsg->m_pDstTarget;
+  CFWL_FormImp* pForm =
+      pWidget ? static_cast<CFWL_FormImp*>(pWidget->GetImpl()) : nullptr;
+  if (pForm) {
+    CFWL_WidgetImp* pSubFocus = pForm->GetSubFocus();
+    if (pSubFocus && (pSubFocus->GetStates() & FWL_WGTSTATE_Focused)) {
+      pMsg->m_pDstTarget = pSubFocus->GetInterface();
+      if (m_pFocus == pMsg->m_pDstTarget) {
+        m_pFocus = NULL;
+        return TRUE;
+      }
+    }
+  }
+  return FALSE;
+}
+FX_BOOL CFWL_NoteDriver::DoKey(CFWL_MsgKey* pMsg, IFWL_Widget* pMessageForm) {
+#if (_FX_OS_ != _FX_MACOSX_)
+  if (pMsg->m_dwCmd == FWL_MSGKEYCMD_KeyDown &&
+      pMsg->m_dwKeyCode == FWL_VKEY_Tab) {
+    CFWL_WidgetMgr* pWidgetMgr =
+        static_cast<CFWL_WidgetMgr*>(FWL_GetWidgetMgr());
+    IFWL_Widget* pForm = GetMessageForm(pMsg->m_pDstTarget);
+    IFWL_Widget* pFocus = m_pFocus;
+    if (m_pFocus) {
+      if (pWidgetMgr->GetWidget(m_pFocus, FWL_WGTRELATION_SystemForm) !=
+          pForm) {
+        pFocus = NULL;
+      }
+    }
+    FX_BOOL bFind = FALSE;
+    IFWL_Widget* pNextTabStop = pWidgetMgr->nextTab(pForm, pFocus, bFind);
+    if (!pNextTabStop) {
+      bFind = FALSE;
+      pNextTabStop = pWidgetMgr->nextTab(pForm, NULL, bFind);
+    }
+    if (pNextTabStop == pFocus) {
+      return TRUE;
+    }
+    if (pNextTabStop) {
+      SetFocus(pNextTabStop);
+    }
+    return TRUE;
+  }
+#endif
+  if (!m_pFocus) {
+    if (pMsg->m_dwCmd == FWL_MSGKEYCMD_KeyDown &&
+        pMsg->m_dwKeyCode == FWL_VKEY_Return) {
+      CFWL_WidgetMgr* pWidgetMgr =
+          static_cast<CFWL_WidgetMgr*>(FWL_GetWidgetMgr());
+      IFWL_Widget* defButton = pWidgetMgr->GetDefaultButton(pMessageForm);
+      if (defButton) {
+        pMsg->m_pDstTarget = defButton;
+        return TRUE;
+      }
+    }
+    return FALSE;
+  }
+  pMsg->m_pDstTarget = m_pFocus;
+  return TRUE;
+}
+FX_BOOL CFWL_NoteDriver::DoMouse(CFWL_MsgMouse* pMsg,
+                                 IFWL_Widget* pMessageForm) {
+  if (pMsg->m_dwCmd == FWL_MSGMOUSECMD_MouseLeave ||
+      pMsg->m_dwCmd == FWL_MSGMOUSECMD_MouseHover ||
+      pMsg->m_dwCmd == FWL_MSGMOUSECMD_MouseEnter) {
+    return pMsg->m_pDstTarget != NULL;
+  }
+  if (pMsg->m_pDstTarget != pMessageForm) {
+    pMsg->m_pDstTarget->TransformTo(pMessageForm, pMsg->m_fx, pMsg->m_fy);
+  }
+  if (!DoMouseEx(pMsg, pMessageForm)) {
+    pMsg->m_pDstTarget = pMessageForm;
+  }
+  return TRUE;
+}
+FX_BOOL CFWL_NoteDriver::DoWheel(CFWL_MsgMouseWheel* pMsg,
+                                 IFWL_Widget* pMessageForm) {
+  CFWL_WidgetMgr* pWidgetMgr = static_cast<CFWL_WidgetMgr*>(FWL_GetWidgetMgr());
+  if (!pWidgetMgr)
+    return FALSE;
+  IFWL_Widget* pDst =
+      pWidgetMgr->GetWidgetAtPoint(pMessageForm, pMsg->m_fx, pMsg->m_fy);
+  if (!pDst)
+    return FALSE;
+  while (pDst && pDst->GetClassID() == FWL_CLASSHASH_Grid) {
+    pDst = pDst->GetParent();
+  }
+  pMessageForm->TransformTo(pDst, pMsg->m_fx, pMsg->m_fy);
+  pMsg->m_pDstTarget = pDst;
+  return TRUE;
+}
+FX_BOOL CFWL_NoteDriver::DoSize(CFWL_MsgSize* pMsg) {
+  CFWL_WidgetMgr* pWidgetMgr = static_cast<CFWL_WidgetMgr*>(FWL_GetWidgetMgr());
+  if (!pWidgetMgr)
+    return FALSE;
+  pWidgetMgr->NotifySizeChanged(pMsg->m_pDstTarget, (FX_FLOAT)pMsg->m_iWidth,
+                                (FX_FLOAT)pMsg->m_iHeight);
+  return TRUE;
+}
+FX_BOOL CFWL_NoteDriver::DoWindowMove(CFWL_MsgWindowMove* pMsg,
+                                      IFWL_Widget* pMessageForm) {
+  return pMsg->m_pDstTarget == pMessageForm;
+}
+FX_BOOL CFWL_NoteDriver::DoDragFiles(CFWL_MsgDropFiles* pMsg,
+                                     IFWL_Widget* pMessageForm) {
+  return pMsg->m_pDstTarget == pMessageForm;
+}
+FX_BOOL CFWL_NoteDriver::DoMouseEx(CFWL_MsgMouse* pMsg,
+                                   IFWL_Widget* pMessageForm) {
+  CFWL_WidgetMgr* pWidgetMgr = static_cast<CFWL_WidgetMgr*>(FWL_GetWidgetMgr());
+  if (!pWidgetMgr)
+    return FALSE;
+  IFWL_Widget* pTarget = NULL;
+  if (m_pGrab)
+    pTarget = m_pGrab;
+  if (!pTarget) {
+    pTarget =
+        pWidgetMgr->GetWidgetAtPoint(pMessageForm, pMsg->m_fx, pMsg->m_fy);
+    while (pTarget && pTarget->GetClassID() == FWL_CLASSHASH_Grid) {
+      pTarget = pTarget->GetParent();
+    }
+  }
+  if (pTarget) {
+    if (pMessageForm != pTarget) {
+      pMessageForm->TransformTo(pTarget, pMsg->m_fx, pMsg->m_fy);
+    }
+  }
+  if (!pTarget)
+    return FALSE;
+  pMsg->m_pDstTarget = pTarget;
+  return TRUE;
+}
+void CFWL_NoteDriver::MouseSecondary(CFWL_MsgMouse* pMsg) {
+  IFWL_Widget* pTarget = pMsg->m_pDstTarget;
+  if (pTarget == m_pHover) {
+    return;
+  }
+  if (m_pHover) {
+    CFWL_MsgMouse msLeave;
+    msLeave.m_pDstTarget = m_pHover;
+    msLeave.m_fx = pMsg->m_fx;
+    msLeave.m_fy = pMsg->m_fy;
+    pTarget->TransformTo(m_pHover, msLeave.m_fx, msLeave.m_fy);
+    msLeave.m_dwFlags = 0;
+    msLeave.m_dwCmd = FWL_MSGMOUSECMD_MouseLeave;
+    DispatchMessage(&msLeave, NULL);
+  }
+  if (pTarget->GetClassID() == FWL_CLASSHASH_Form) {
+    m_pHover = NULL;
+    return;
+  }
+  m_pHover = pTarget;
+  CFWL_MsgMouse msHover;
+  msHover.m_pDstTarget = pTarget;
+  msHover.m_fx = pMsg->m_fx;
+  msHover.m_fy = pMsg->m_fy;
+  msHover.m_dwFlags = 0;
+  msHover.m_dwCmd = FWL_MSGMOUSECMD_MouseHover;
+  DispatchMessage(&msHover, NULL);
+}
+FX_BOOL CFWL_NoteDriver::IsValidMessage(CFWL_Message* pMessage) {
+  if (pMessage->GetClassID() == FWL_MSGHASH_Post) {
+    return TRUE;
+  }
+  int32_t iCount = m_noteLoopQueue.GetSize();
+  for (int32_t i = 0; i < iCount; i++) {
+    CFWL_NoteLoop* pNoteLoop = static_cast<CFWL_NoteLoop*>(m_noteLoopQueue[i]);
+    CFWL_WidgetImp* pForm = pNoteLoop->GetForm();
+    if (pForm && (pForm->GetInterface() == pMessage->m_pDstTarget)) {
+      return TRUE;
+    }
+  }
+  iCount = m_forms.GetSize();
+  for (int32_t j = 0; j < iCount; j++) {
+    CFWL_FormImp* pForm = static_cast<CFWL_FormImp*>(m_forms[j]);
+    if (pForm->GetInterface() == pMessage->m_pDstTarget) {
+      return TRUE;
+    }
+  }
+  return FALSE;
+}
+IFWL_Widget* CFWL_NoteDriver::GetMessageForm(IFWL_Widget* pDstTarget) {
+  int32_t iTrackLoop = m_noteLoopQueue.GetSize();
+  if (iTrackLoop <= 0)
+    return NULL;
+  IFWL_Widget* pMessageForm = NULL;
+  if (iTrackLoop > 1) {
+    CFWL_NoteLoop* pNootLoop =
+        static_cast<CFWL_NoteLoop*>(m_noteLoopQueue[iTrackLoop - 1]);
+    pMessageForm = pNootLoop->GetForm()->GetInterface();
+  } else {
+    pMessageForm = (m_forms.Find(pDstTarget) < 0) ? NULL : pDstTarget;
+  }
+  if (!pMessageForm && pDstTarget) {
+    CFWL_WidgetMgr* pWidgetMgr =
+        static_cast<CFWL_WidgetMgr*>(FWL_GetWidgetMgr());
+    if (!pWidgetMgr)
+      return NULL;
+    pMessageForm =
+        pWidgetMgr->GetWidget(pDstTarget, FWL_WGTRELATION_SystemForm);
+  }
+  return pMessageForm;
+}
+void CFWL_NoteDriver::ClearInvalidEventTargets(FX_BOOL bRemoveAll) {
+  FX_POSITION pos = m_eventTargets.GetStartPosition();
+  while (pos) {
+    void* key = NULL;
+    CFWL_EventTarget* pEventTarget = NULL;
+    m_eventTargets.GetNextAssoc(pos, key, (void*&)pEventTarget);
+    if (pEventTarget && (bRemoveAll || pEventTarget->IsInvalid())) {
+      m_eventTargets.RemoveKey(key);
+      delete pEventTarget;
+    }
+  }
+}
+class CFWL_CoreToopTipDP : public IFWL_ToolTipDP {
+ public:
+  FWL_ERR GetCaption(IFWL_Widget* pWidget, CFX_WideString& wsCaption);
+  int32_t GetInitialDelay(IFWL_Widget* pWidget);
+  int32_t GetAutoPopDelay(IFWL_Widget* pWidget);
+  CFX_DIBitmap* GetToolTipIcon(IFWL_Widget* pWidget);
+  CFX_SizeF GetToolTipIconSize(IFWL_Widget* pWidget);
+  CFX_RectF GetAnchor();
+  CFWL_CoreToopTipDP();
+
+  CFX_WideString m_wsCaption;
+  int32_t m_nInitDelayTime;
+  int32_t m_nAutoPopDelayTime;
+  CFX_RectF m_fAnchor;
+};
+CFWL_CoreToopTipDP::CFWL_CoreToopTipDP() {
+  m_nInitDelayTime = 500;
+  m_nAutoPopDelayTime = 50000;
+  m_fAnchor.Set(0.0, 0.0, 0.0, 0.0);
+}
+FWL_ERR CFWL_CoreToopTipDP::GetCaption(IFWL_Widget* pWidget,
+                                       CFX_WideString& wsCaption) {
+  wsCaption = m_wsCaption;
+  return FWL_ERR_Succeeded;
+}
+int32_t CFWL_CoreToopTipDP::GetInitialDelay(IFWL_Widget* pWidget) {
+  return m_nInitDelayTime;
+}
+int32_t CFWL_CoreToopTipDP::GetAutoPopDelay(IFWL_Widget* pWidget) {
+  return m_nAutoPopDelayTime;
+}
+CFX_DIBitmap* CFWL_CoreToopTipDP::GetToolTipIcon(IFWL_Widget* pWidget) {
+  return NULL;
+}
+CFX_SizeF CFWL_CoreToopTipDP::GetToolTipIconSize(IFWL_Widget* pWidget) {
+  return CFX_SizeF();
+}
+CFX_RectF CFWL_CoreToopTipDP::GetAnchor() {
+  return m_fAnchor;
+}
+CFWL_EventTarget::~CFWL_EventTarget() {
+  m_eventSources.RemoveAll();
+}
+int32_t CFWL_EventTarget::SetEventSource(IFWL_Widget* pSource,
+                                         FX_DWORD dwFilter) {
+  if (pSource) {
+    m_eventSources.SetAt(pSource, dwFilter);
+    return m_eventSources.GetCount();
+  }
+  return 1;
+}
+FX_BOOL CFWL_EventTarget::ProcessEvent(CFWL_Event* pEvent) {
+  IFWL_WidgetDelegate* pDelegate = m_pListener->SetDelegate(NULL);
+  if (!pDelegate)
+    return FALSE;
+  if (m_eventSources.GetCount() == 0) {
+    pDelegate->OnProcessEvent(pEvent);
+    return TRUE;
+  }
+  FX_POSITION pos = m_eventSources.GetStartPosition();
+  while (pos) {
+    IFWL_Widget* pSource = NULL;
+    FX_DWORD dwFilter = 0;
+    m_eventSources.GetNextAssoc(pos, (void*&)pSource, dwFilter);
+    if (pSource == pEvent->m_pSrcTarget ||
+        pEvent->GetClassID() == FWL_EVTHASH_Idle) {
+      if (IsFilterEvent(pEvent, dwFilter)) {
+        pDelegate->OnProcessEvent(pEvent);
+        return TRUE;
+      }
+    }
+  }
+  return FALSE;
+}
+FX_BOOL CFWL_EventTarget::IsFilterEvent(CFWL_Event* pEvent, FX_DWORD dwFilter) {
+  if (dwFilter == FWL_EVENT_ALL_MASK) {
+    return TRUE;
+  }
+  FX_BOOL bRet = FALSE;
+  switch (pEvent->GetClassID()) {
+    case FWL_EVTHASH_Mouse: {
+      bRet = dwFilter & FWL_EVENT_MOUSE_MASK;
+      break;
+    }
+    case FWL_EVTHASH_MouseWheel: {
+      bRet = dwFilter & FWL_EVENT_MOUSEWHEEL_MASK;
+      break;
+    }
+    case FWL_EVTHASH_Key: {
+      bRet = dwFilter & FWL_EVENT_KEY_MASK;
+      break;
+    }
+    case FWL_EVTHASH_SetFocus:
+    case FWL_EVTHASH_KillFocus: {
+      bRet = dwFilter & FWL_EVENT_FOCUSCHANGED_MASK;
+      break;
+    }
+    case FWL_EVTHASH_Draw: {
+      bRet = dwFilter & FWL_EVENT_DRAW_MASK;
+      break;
+    }
+    case FWL_EVTHASH_Close: {
+      bRet = dwFilter & FWL_EVENT_CLOSE_MASK;
+      break;
+    }
+    case FWL_EVTHASH_SizeChanged: {
+      bRet = dwFilter & FWL_EVENT_SIZECHANGED_MASK;
+      break;
+    }
+    case FWL_EVTHASH_Idle: {
+      bRet = dwFilter & FWL_EVENT_IDLE_MASK;
+      break;
+    }
+    default: {
+      bRet = dwFilter & FWL_EVENT_CONTROL_MASK;
+      break;
+    }
+  }
+  return bRet;
+}
+
+CFWL_ToolTipContainer* CFWL_ToolTipContainer::s_pInstance = NULL;
+
+CFWL_ToolTipContainer::CFWL_ToolTipContainer()
+    : pCurTarget(NULL), m_pToolTipImp(NULL) {
+  m_ToolTipDp = new CFWL_CoreToopTipDP;
+  m_ToolTipDp->m_nInitDelayTime = 0;
+  m_ToolTipDp->m_nAutoPopDelayTime = 2000;
+}
+CFWL_ToolTipContainer::~CFWL_ToolTipContainer() {
+  if (m_pToolTipImp) {
+    IFWL_ToolTip* pToolTip =
+        static_cast<IFWL_ToolTip*>(m_pToolTipImp->GetInterface());
+    pToolTip->Finalize();
+    delete pToolTip;
+  }
+  delete m_ToolTipDp;
+}
+// static
+CFWL_ToolTipContainer* CFWL_ToolTipContainer::getInstance() {
+  if (!s_pInstance) {
+    s_pInstance = new CFWL_ToolTipContainer;
+  }
+  return s_pInstance;
+}
+// static
+void CFWL_ToolTipContainer::DeleteInstance() {
+  if (s_pInstance) {
+    delete s_pInstance;
+    s_pInstance = NULL;
+  }
+}
+FX_ERR CFWL_ToolTipContainer::AddToolTipTarget(IFWL_ToolTipTarget* pTarget) {
+  if (m_arrWidget.Find((void*)pTarget) < 0) {
+    m_arrWidget.Add((void*)pTarget);
+    return FWL_ERR_Succeeded;
+  }
+  return FWL_ERR_Indefinite;
+}
+FX_ERR CFWL_ToolTipContainer::RemoveToolTipTarget(IFWL_ToolTipTarget* pTarget) {
+  int index = m_arrWidget.Find((void*)pTarget);
+  if (index >= 0) {
+    m_arrWidget.RemoveAt(index);
+    return FWL_ERR_Succeeded;
+  }
+  return FWL_ERR_Indefinite;
+}
+FX_BOOL CFWL_ToolTipContainer::HasToolTip(IFWL_Widget* pWedget) {
+  int32_t iCount = m_arrWidget.GetSize();
+  for (int32_t i = 0; i < iCount; i++) {
+    IFWL_ToolTipTarget* p = static_cast<IFWL_ToolTipTarget*>(m_arrWidget[i]);
+    if (p->GetWidget() == pWedget) {
+      pCurTarget = p;
+      return TRUE;
+    }
+  }
+  return FALSE;
+}
+FX_BOOL CFWL_ToolTipContainer::ProcessEnter(CFWL_EvtMouse* pEvt,
+                                            IFWL_Widget* pOwner) {
+  if (HasToolTip(pEvt->m_pDstTarget)) {
+    if (NULL == m_pToolTipImp) {
+      CFWL_WidgetImpProperties prop;
+      prop.m_pDataProvider = m_ToolTipDp;
+      prop.m_pOwner = pOwner;
+      CFX_RectF rtTooltip;
+      rtTooltip.Set(150, 150, 100, 50);
+      prop.m_rtWidget = rtTooltip;
+      IFWL_ToolTip* pToolTip = IFWL_ToolTip::Create(prop, nullptr);
+      pToolTip->Initialize();
+      m_pToolTipImp = static_cast<CFWL_ToolTipImp*>(pToolTip->GetImpl());
+      m_pToolTipImp->ModifyStylesEx(FWL_STYLEEXT_TTP_Multiline, 0);
+      m_pToolTipImp->SetStates(FWL_WGTSTATE_Invisible, TRUE);
+    }
+    if (pCurTarget->IsShowed()) {
+      CFX_WideString wsCaption;
+      pCurTarget->GetCaption(wsCaption);
+      if (!wsCaption.IsEmpty()) {
+        m_ToolTipDp->m_wsCaption = wsCaption;
+      }
+      CFX_RectF rt;
+      CFX_SizeF sz;
+      pCurTarget->GetToolTipSize(sz);
+      if (sz.x > 0 && sz.y > 0) {
+        rt.width = sz.x;
+        rt.height = sz.y;
+      } else {
+        CFX_RectF r;
+        m_pToolTipImp->GetWidgetRect(r, TRUE);
+        rt.width = r.width;
+        rt.height = r.height;
+      }
+      CFX_PointF pt(pEvt->m_fx, pEvt->m_fy);
+      if (pCurTarget->GetToolTipPos(pt) == FWL_ERR_Succeeded) {
+        rt.left = pt.x;
+        rt.top = pt.y;
+        m_pToolTipImp->ModifyStylesEx(FWL_STYLEEXT_TTP_NoAnchor, 0);
+      } else {
+        CFX_RectF rtAnchor;
+        pCurTarget->GetWidget()->GetClientRect(rtAnchor);
+        pCurTarget->GetWidget()->TransformTo(NULL, rtAnchor.left, rtAnchor.top);
+        m_pToolTipImp->SetAnchor(rtAnchor);
+        m_pToolTipImp->ModifyStylesEx(0, FWL_STYLEEXT_TTP_NoAnchor);
+      }
+      m_pToolTipImp->SetWidgetRect(rt);
+      m_pToolTipImp->Update();
+      m_pToolTipImp->Show();
+    }
+    return TRUE;
+  }
+  return FALSE;
+}
+FX_BOOL CFWL_ToolTipContainer::ProcessLeave(CFWL_EvtMouse* pEvt) {
+  if (HasToolTip(pEvt->m_pDstTarget) && NULL != m_pToolTipImp) {
+    m_pToolTipImp->Hide();
+    pCurTarget = NULL;
+    return TRUE;
+  }
+  return FALSE;
+}
+IFWL_ToolTipTarget* CFWL_ToolTipContainer::GetCurrentToolTipTarget() {
+  return pCurTarget;
+}
+FX_ERR CFWL_ToolTipContainer::SetToolTipInitialDelay(int32_t nDelayTime) {
+  m_ToolTipDp->m_nInitDelayTime = nDelayTime;
+  return FWL_ERR_Succeeded;
+}
+FX_ERR CFWL_ToolTipContainer::SetToolTipAutoPopDelay(int32_t nDelayTime) {
+  m_ToolTipDp->m_nAutoPopDelayTime = nDelayTime;
+  return FWL_ERR_Succeeded;
+}
+FWL_ERR FWL_AddToolTipTarget(IFWL_ToolTipTarget* pTarget) {
+  return CFWL_ToolTipContainer::getInstance()->AddToolTipTarget(pTarget);
+}
+FWL_ERR FWL_RemoveToolTipTarget(IFWL_ToolTipTarget* pTarget) {
+  return CFWL_ToolTipContainer::getInstance()->RemoveToolTipTarget(pTarget);
+}
+FWL_ERR FWL_SetToolTipInitialDelay(int32_t nDelayTime) {
+  return CFWL_ToolTipContainer::getInstance()->SetToolTipInitialDelay(
+      nDelayTime);
+}
+FWL_ERR FWL_SetToolTipAutoPopDelay(int32_t nDelayTime) {
+  return CFWL_ToolTipContainer::getInstance()->SetToolTipAutoPopDelay(
+      nDelayTime);
+}
+IFWL_Widget* FWL_GetCurrentThreadModalWidget(IFWL_NoteThread* pNoteThread) {
+  if (!pNoteThread)
+    return NULL;
+  CFWL_NoteDriver* noteDriver =
+      static_cast<CFWL_NoteDriver*>(pNoteThread->GetNoteDriver());
+  if (!noteDriver)
+    return NULL;
+  if (noteDriver->CountLoop() == 1) {
+    return NULL;
+  }
+  CFWL_NoteLoop* topLoop = noteDriver->GetTopLoop();
+  if (!topLoop)
+    return NULL;
+  CFWL_WidgetImp* widget = topLoop->GetForm();
+  if (!widget)
+    return NULL;
+  return widget->GetInterface();
+}
+FWL_ERR FWL_SetHook(IFWL_NoteDriver* driver,
+                    FWLMessageHookCallback callback,
+                    void* info) {
+  CFWL_NoteDriver* noteDriver = static_cast<CFWL_NoteDriver*>(driver);
+  noteDriver->SetHook(callback, info);
+  return FWL_ERR_Succeeded;
+}
diff --git a/xfa/fwl/core/fwl_noteimp.h b/xfa/fwl/core/fwl_noteimp.h
new file mode 100644
index 0000000000..e0f17bb278
--- /dev/null
+++ b/xfa/fwl/core/fwl_noteimp.h
@@ -0,0 +1,157 @@
+// Copyright 2014 PDFium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
+
+#ifndef XFA_FWL_CORE_FWL_NOTEIMP_H_
+#define XFA_FWL_CORE_FWL_NOTEIMP_H_
+
+#include "xfa/include/fwl/core/fwl_note.h"
+
+class CFWL_WidgetImp;
+class CFWL_ToolTipImp;
+class CFWL_CoreToopTipDP;
+class CFWL_NoteDriver;
+class CFWL_EventTarget;
+class CFWL_ToolTipContainer;
+
+class CFWL_NoteLoop : public IFWL_NoteLoop {
+ public:
+  CFWL_NoteLoop(CFWL_WidgetImp* pForm = NULL);
+
+  // IFWL_NoteLoop:
+  ~CFWL_NoteLoop() override {}
+  FX_BOOL PreProcessMessage(CFWL_Message* pMessage) override;
+  FWL_ERR Idle(int32_t count) override;
+
+  CFWL_WidgetImp* GetForm();
+  FX_BOOL ContinueModal();
+  FWL_ERR EndModalLoop();
+  FX_BOOL TranslateAccelerator(CFWL_Message* pMessage);
+  FWL_ERR SetMainForm(CFWL_WidgetImp* pForm);
+
+ protected:
+  void GenerateCommondEvent(FX_DWORD dwCommand);
+
+  CFWL_WidgetImp* m_pForm;
+  FX_BOOL m_bContinueModal;
+};
+class CFWL_NoteDriver : public IFWL_NoteDriver {
+ public:
+  CFWL_NoteDriver();
+  ~CFWL_NoteDriver() override;
+
+  // IFWL_NoteDriver:
+  FX_BOOL SendNote(CFWL_Note* pNote) override;
+  FX_BOOL PostMessage(CFWL_Message* pMessage) override;
+  FWL_ERR RegisterEventTarget(IFWL_Widget* pListener,
+                              IFWL_Widget* pEventSource = NULL,
+                              FX_DWORD dwFilter = FWL_EVENT_ALL_MASK) override;
+  FWL_ERR UnregisterEventTarget(IFWL_Widget* pListener) override;
+  void ClearEventTargets(FX_BOOL bRemoveAll) override;
+  int32_t GetQueueMaxSize() const override;
+  FWL_ERR SetQueueMaxSize(const int32_t size) override;
+  IFWL_NoteThread* GetOwnerThread() const override;
+  FWL_ERR PushNoteLoop(IFWL_NoteLoop* pNoteLoop) override;
+  IFWL_NoteLoop* PopNoteLoop() override;
+  IFWL_Widget* GetFocus() override;
+  FX_BOOL SetFocus(IFWL_Widget* pFocus, FX_BOOL bNotify = FALSE) override;
+  void SetGrab(IFWL_Widget* pGrab, FX_BOOL bSet) override;
+  FWL_ERR Run() override;
+
+  IFWL_Widget* GetHover();
+  void SetHover(IFWL_Widget* pHover);
+  void NotifyTargetHide(IFWL_Widget* pNoteTarget);
+  void NotifyTargetDestroy(IFWL_Widget* pNoteTarget);
+  void NotifyFullScreenMode(IFWL_Widget* pNoteTarget, FX_BOOL bFullScreen);
+  FWL_ERR RegisterForm(CFWL_WidgetImp* pForm);
+  FWL_ERR UnRegisterForm(CFWL_WidgetImp* pForm);
+  FX_BOOL QueueMessage(CFWL_Message* pMessage);
+  FX_BOOL UnqueueMessage(CFWL_NoteLoop* pNoteLoop);
+  CFWL_NoteLoop* GetTopLoop();
+  int32_t CountLoop();
+  void SetHook(FWLMessageHookCallback callback, void* info);
+  FX_BOOL ProcessMessage(CFWL_Message* pMessage);
+
+ protected:
+  FX_BOOL DispatchMessage(CFWL_Message* pMessage, IFWL_Widget* pMessageForm);
+  FX_BOOL DoActivate(CFWL_MsgActivate* pMsg, IFWL_Widget* pMessageForm);
+  FX_BOOL DoDeactivate(CFWL_MsgDeactivate* pMsg, IFWL_Widget* pMessageForm);
+  FX_BOOL DoSetFocus(CFWL_MsgSetFocus* pMsg, IFWL_Widget* pMessageForm);
+  FX_BOOL DoKillFocus(CFWL_MsgKillFocus* pMsg, IFWL_Widget* pMessageForm);
+  FX_BOOL DoKey(CFWL_MsgKey* pMsg, IFWL_Widget* pMessageForm);
+  FX_BOOL DoMouse(CFWL_MsgMouse* pMsg, IFWL_Widget* pMessageForm);
+  FX_BOOL DoWheel(CFWL_MsgMouseWheel* pMsg, IFWL_Widget* pMessageForm);
+  FX_BOOL DoSize(CFWL_MsgSize* pMsg);
+  FX_BOOL DoWindowMove(CFWL_MsgWindowMove* pMsg, IFWL_Widget* pMessageForm);
+  FX_BOOL DoDragFiles(CFWL_MsgDropFiles* pMsg, IFWL_Widget* pMessageForm);
+  FX_BOOL DoMouseEx(CFWL_MsgMouse* pMsg, IFWL_Widget* pMessageForm);
+  void MouseSecondary(CFWL_MsgMouse* pMsg);
+  FX_BOOL IsValidMessage(CFWL_Message* pMessage);
+  IFWL_Widget* GetMessageForm(IFWL_Widget* pDstTarget);
+  void ClearInvalidEventTargets(FX_BOOL bRemoveAll);
+  CFX_PtrArray m_forms;
+  CFX_PtrArray m_noteQueue;
+  CFX_PtrArray m_noteLoopQueue;
+  CFX_MapPtrToPtr m_eventTargets;
+  int32_t m_sendEventCalled;
+  int32_t m_maxSize;
+  FX_BOOL m_bFullScreen;
+  IFWL_Widget* m_pHover;
+  IFWL_Widget* m_pFocus;
+  IFWL_Widget* m_pGrab;
+  CFWL_NoteLoop* m_pNoteLoop;
+  FWLMessageHookCallback m_hook;
+  void* m_hookInfo;
+};
+typedef CFX_MapPtrTemplate<void*, FX_DWORD> CFWL_EventSource;
+class CFWL_EventTarget {
+ public:
+  CFWL_EventTarget(CFWL_NoteDriver* pNoteDriver, IFWL_Widget* pListener)
+      : m_pListener(pListener), m_pNoteDriver(pNoteDriver), m_bInvalid(FALSE) {}
+  ~CFWL_EventTarget();
+  int32_t SetEventSource(IFWL_Widget* pSource,
+                         FX_DWORD dwFilter = FWL_EVENT_ALL_MASK);
+  FX_BOOL ProcessEvent(CFWL_Event* pEvent);
+  FX_BOOL IsFilterEvent(CFWL_Event* pEvent, FX_DWORD dwFilter);
+  FX_BOOL IsInvalid() { return m_bInvalid; }
+  void FlagInvalid() { m_bInvalid = TRUE; }
+
+ protected:
+  CFWL_EventSource m_eventSources;
+  IFWL_Widget* m_pListener;
+  CFWL_NoteDriver* m_pNoteDriver;
+  FX_BOOL m_bInvalid;
+};
+class CFWL_ToolTipContainer {
+ public:
+  static CFWL_ToolTipContainer* getInstance();
+  static void DeleteInstance();
+
+  FX_ERR AddToolTipTarget(IFWL_ToolTipTarget* pTarget);
+  FX_ERR RemoveToolTipTarget(IFWL_ToolTipTarget* pTarget);
+  IFWL_ToolTipTarget* GetCurrentToolTipTarget();
+
+  FX_BOOL HasToolTip(IFWL_Widget* pWidget);
+
+  FX_BOOL ProcessEnter(CFWL_EvtMouse* pEvt, IFWL_Widget* pOwner);
+  FX_BOOL ProcessLeave(CFWL_EvtMouse* pEvt);
+
+  FX_ERR SetToolTipInitialDelay(int32_t iDelayTime);
+  FX_ERR SetToolTipAutoPopDelay(int32_t iDelayTime);
+
+ protected:
+  CFWL_ToolTipContainer();
+  virtual ~CFWL_ToolTipContainer();
+
+  IFWL_ToolTipTarget* pCurTarget;
+  CFWL_ToolTipImp* m_pToolTipImp;
+  CFWL_CoreToopTipDP* m_ToolTipDp;
+  CFX_PtrArray m_arrWidget;
+
+ private:
+  static CFWL_ToolTipContainer* s_pInstance;
+};
+
+#endif  // XFA_FWL_CORE_FWL_NOTEIMP_H_
diff --git a/xfa/fwl/core/fwl_panelimp.cpp b/xfa/fwl/core/fwl_panelimp.cpp
new file mode 100644
index 0000000000..e24413368c
--- /dev/null
+++ b/xfa/fwl/core/fwl_panelimp.cpp
@@ -0,0 +1,152 @@
+// 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 "xfa/fwl/core/fwl_panelimp.h"
+
+#include "xfa/fwl/core/fwl_noteimp.h"
+#include "xfa/fwl/core/fwl_targetimp.h"
+#include "xfa/fwl/core/fwl_widgetimp.h"
+#include "xfa/fwl/core/fwl_widgetmgrimp.h"
+#include "xfa/include/fwl/core/fwl_content.h"
+#include "xfa/include/fwl/core/fwl_grid.h"
+#include "xfa/include/fwl/core/fwl_panel.h"
+
+// static
+IFWL_Panel* IFWL_Panel::Create(CFWL_WidgetImpProperties& properties,
+                               IFWL_Widget* pOuter) {
+  IFWL_Panel* pPanel = new IFWL_Panel;
+  CFWL_PanelImp* pPanelImpl = new CFWL_PanelImp(properties, pOuter);
+  pPanel->SetImpl(pPanelImpl);
+  pPanelImpl->SetInterface(pPanel);
+  return pPanel;
+}
+IFWL_Panel::IFWL_Panel() {}
+IFWL_Content* IFWL_Panel::GetContent() {
+  return static_cast<CFWL_PanelImp*>(GetImpl())->GetContent();
+}
+FWL_ERR IFWL_Panel::SetContent(IFWL_Content* pContent) {
+  return static_cast<CFWL_PanelImp*>(GetImpl())->SetContent(pContent);
+}
+
+CFWL_PanelImp::CFWL_PanelImp(const CFWL_WidgetImpProperties& properties,
+                             IFWL_Widget* pOuter)
+    : CFWL_WidgetImp(properties, pOuter), m_pContent(nullptr) {}
+CFWL_PanelImp::~CFWL_PanelImp() {}
+FWL_ERR CFWL_PanelImp::GetClassName(CFX_WideString& wsClass) const {
+  wsClass = FWL_CLASS_Panel;
+  return FWL_ERR_Succeeded;
+}
+FX_DWORD CFWL_PanelImp::GetClassID() const {
+  return FWL_CLASSHASH_Panel;
+}
+FWL_ERR CFWL_PanelImp::GetWidgetRect(CFX_RectF& rect, FX_BOOL bAutoSize) {
+  if (bAutoSize) {
+    if (m_pContent) {
+      m_pContent->GetWidgetRect(rect, TRUE);
+    }
+  } else {
+    rect = m_pProperties->m_rtWidget;
+  }
+  return FWL_ERR_Succeeded;
+}
+FWL_ERR CFWL_PanelImp::Update() {
+  if (m_pContent) {
+    CFX_RectF rtClient;
+    GetClientRect(rtClient);
+    FWL_GRIDUNIT eWidth = FWL_GRIDUNIT_Fixed, eHeight = FWL_GRIDUNIT_Fixed;
+    IFWL_WidgetMgr* pWidgetMgr = FWL_GetWidgetMgr();
+    if (!pWidgetMgr)
+      return FWL_ERR_Indefinite;
+    IFWL_Widget* pParent =
+        pWidgetMgr->GetWidget(GetInterface(), FWL_WGTRELATION_Parent);
+    if (pParent && pParent->GetClassID() == FWL_CLASSHASH_Grid) {
+      IFWL_Grid* pGrid = static_cast<IFWL_Grid*>(pParent);
+      pGrid->GetWidgetSize(GetInterface(), FWL_GRIDSIZE_Width, eWidth);
+      pGrid->GetWidgetSize(GetInterface(), FWL_GRIDSIZE_Height, eHeight);
+    }
+    m_pContent->SetWidgetRect(rtClient);
+    m_pContent->Update();
+  }
+  return FWL_ERR_Succeeded;
+}
+IFWL_Content* CFWL_PanelImp::GetContent() {
+  return m_pContent;
+}
+FWL_ERR CFWL_PanelImp::SetContent(IFWL_Content* pContent) {
+  if (!pContent)
+    return FWL_ERR_Indefinite;
+  m_pContent = pContent;
+  return pContent->SetParent(m_pInterface);
+}
+class CFWL_CustomPanelImp : public CFWL_WidgetImp {
+ public:
+  CFWL_CustomPanelImp(const CFWL_WidgetImpProperties& properties,
+                      IFWL_Widget* pOuter);
+  virtual ~CFWL_CustomPanelImp();
+  virtual FWL_ERR GetWidgetRect(CFX_RectF& rect, FX_BOOL bAutoSize = FALSE);
+  virtual FWL_ERR Update();
+  virtual IFWL_Content* GetContent();
+  virtual FWL_ERR SetContent(IFWL_Content* pContent);
+  FWL_ERR SetProxy(IFWL_Proxy* pProxy);
+
+ protected:
+  IFWL_Content* m_pContent;
+  IFWL_Proxy* m_pProxy;
+};
+CFWL_CustomPanelImp::CFWL_CustomPanelImp(
+    const CFWL_WidgetImpProperties& properties,
+    IFWL_Widget* pOuter)
+    : CFWL_WidgetImp(properties, pOuter),
+      m_pContent(nullptr),
+      m_pProxy(nullptr) {}
+CFWL_CustomPanelImp::~CFWL_CustomPanelImp() {}
+FWL_ERR CFWL_CustomPanelImp::GetWidgetRect(CFX_RectF& rect, FX_BOOL bAutoSize) {
+  if (bAutoSize && m_pProxy &&
+      (m_pProxy->GetWidgetRect(rect, bAutoSize) == FWL_ERR_Succeeded)) {
+    return FWL_ERR_Succeeded;
+  }
+  return CFWL_WidgetImp::GetWidgetRect(rect, bAutoSize);
+}
+FWL_ERR CFWL_CustomPanelImp::Update() {
+  if (m_pProxy) {
+    return m_pProxy->Update();
+  }
+  return CFWL_WidgetImp::Update();
+}
+IFWL_Content* CFWL_CustomPanelImp::GetContent() {
+  return m_pContent;
+}
+FWL_ERR CFWL_CustomPanelImp::SetContent(IFWL_Content* pContent) {
+  if (!pContent)
+    return FWL_ERR_Indefinite;
+  m_pContent = pContent;
+  return pContent->SetParent(m_pInterface);
+}
+FWL_ERR CFWL_CustomPanelImp::SetProxy(IFWL_Proxy* pProxy) {
+  m_pProxy = pProxy;
+  return FWL_ERR_Succeeded;
+}
+
+// statuc
+IFWL_CustomPanel* IFWL_CustomPanel::Create(CFWL_WidgetImpProperties& properties,
+                                           IFWL_Widget* pOuter) {
+  IFWL_CustomPanel* pCustomPanel = new IFWL_CustomPanel;
+  CFWL_CustomPanelImp* pCustomPanelImpl =
+      new CFWL_CustomPanelImp(properties, pOuter);
+  pCustomPanel->SetImpl(pCustomPanelImpl);
+  pCustomPanelImpl->SetInterface(pCustomPanel);
+  return pCustomPanel;
+}
+IFWL_CustomPanel::IFWL_CustomPanel() {}
+IFWL_Content* IFWL_CustomPanel::GetContent() {
+  return static_cast<CFWL_CustomPanelImp*>(GetImpl())->GetContent();
+}
+FWL_ERR IFWL_CustomPanel::SetContent(IFWL_Content* pContent) {
+  return static_cast<CFWL_CustomPanelImp*>(GetImpl())->SetContent(pContent);
+}
+FWL_ERR IFWL_CustomPanel::SetProxy(IFWL_Proxy* pProxy) {
+  return static_cast<CFWL_CustomPanelImp*>(GetImpl())->SetProxy(pProxy);
+}
diff --git a/xfa/fwl/core/fwl_panelimp.h b/xfa/fwl/core/fwl_panelimp.h
new file mode 100644
index 0000000000..9462a38490
--- /dev/null
+++ b/xfa/fwl/core/fwl_panelimp.h
@@ -0,0 +1,32 @@
+// Copyright 2014 PDFium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
+
+#ifndef XFA_FWL_CORE_FWL_PANELIMP_H_
+#define XFA_FWL_CORE_FWL_PANELIMP_H_
+
+#include "xfa/fwl/core/fwl_widgetimp.h"
+
+class CFWL_WidgetImpProperties;
+class IFWL_Widget;
+class IFWL_Content;
+
+class CFWL_PanelImp : public CFWL_WidgetImp {
+ public:
+  CFWL_PanelImp(const CFWL_WidgetImpProperties& properties,
+                IFWL_Widget* pOuter);
+  virtual ~CFWL_PanelImp();
+  virtual FWL_ERR GetClassName(CFX_WideString& wsClass) const;
+  virtual FX_DWORD GetClassID() const;
+  virtual FWL_ERR GetWidgetRect(CFX_RectF& rect, FX_BOOL bAutoSize = FALSE);
+  virtual FWL_ERR Update();
+  virtual IFWL_Content* GetContent();
+  virtual FWL_ERR SetContent(IFWL_Content* pContent);
+
+ protected:
+  IFWL_Content* m_pContent;
+};
+
+#endif  // XFA_FWL_CORE_FWL_PANELIMP_H_
diff --git a/xfa/fwl/core/fwl_sdadapterimp.cpp b/xfa/fwl/core/fwl_sdadapterimp.cpp
new file mode 100644
index 0000000000..88df9bce43
--- /dev/null
+++ b/xfa/fwl/core/fwl_sdadapterimp.cpp
@@ -0,0 +1,175 @@
+// 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 "xfa/include/fwl/adapter/fwl_sdadapterimp.h"
+
+#include "core/include/fxcrt/fx_system.h"
+#include "xfa/fwl/core/fwl_noteimp.h"
+#include "xfa/fwl/core/fwl_targetimp.h"
+#include "xfa/fwl/core/fwl_threadimp.h"
+#include "xfa/fwl/core/fwl_widgetmgrimp.h"
+#include "xfa/include/fwl/adapter/fwl_adapterthreadmgr.h"
+#include "xfa/include/fwl/adapter/fwl_adapterwidgetmgr.h"
+#include "xfa/include/fwl/core/fwl_app.h"
+
+CFWL_SDAdapterWidgetMgr::CFWL_SDAdapterWidgetMgr() {}
+CFWL_SDAdapterWidgetMgr::~CFWL_SDAdapterWidgetMgr() {}
+
+FWL_ERR CFWL_SDAdapterWidgetMgr::CreateWidget(IFWL_Widget* pWidget,
+                                              IFWL_Widget* pParent) {
+  return FWL_ERR_Succeeded;
+}
+FWL_ERR CFWL_SDAdapterWidgetMgr::DestroyWidget(IFWL_Widget* pWidget) {
+  return FWL_ERR_Succeeded;
+}
+FWL_ERR CFWL_SDAdapterWidgetMgr::SetWidgetRect(IFWL_Widget* pWidget,
+                                               const CFX_RectF& rect) {
+  return FWL_ERR_Succeeded;
+}
+FWL_ERR CFWL_SDAdapterWidgetMgr::SetWidgetPosition(IFWL_Widget* pWidget,
+                                                   FX_FLOAT fx,
+                                                   FX_FLOAT fy) {
+  return FWL_ERR_Succeeded;
+}
+FWL_ERR CFWL_SDAdapterWidgetMgr::SetParentWidget(IFWL_Widget* pWidget,
+                                                 IFWL_Widget* pParent) {
+  return FWL_ERR_Succeeded;
+}
+FWL_ERR CFWL_SDAdapterWidgetMgr::ShowWidget(IFWL_Widget* pWidget) {
+  return FWL_ERR_Succeeded;
+}
+FWL_ERR CFWL_SDAdapterWidgetMgr::HideWidget(IFWL_Widget* pWidget) {
+  return FWL_ERR_Succeeded;
+}
+FWL_ERR CFWL_SDAdapterWidgetMgr::SetNormal(IFWL_Widget* pWidget) {
+  return FWL_ERR_Succeeded;
+}
+FWL_ERR CFWL_SDAdapterWidgetMgr::SetMaximize(IFWL_Widget* pWidget) {
+  return FWL_ERR_Succeeded;
+}
+FWL_ERR CFWL_SDAdapterWidgetMgr::SetMinimize(IFWL_Widget* pWidget) {
+  return FWL_ERR_Succeeded;
+}
+FWL_ERR CFWL_SDAdapterWidgetMgr::RunWidget(IFWL_Widget* pWidget) {
+  return FWL_ERR_Succeeded;
+}
+FWL_ERR CFWL_SDAdapterWidgetMgr::RepaintWidget(IFWL_Widget* pWidget,
+                                               const CFX_RectF* pRect) {
+  return FWL_ERR_Succeeded;
+}
+FWL_ERR CFWL_SDAdapterWidgetMgr::Exit(int32_t iExitCode) {
+  return FWL_ERR_Succeeded;
+}
+FWL_ERR CFWL_SDAdapterWidgetMgr::CreateWidgetWithNativeId(IFWL_Widget* pWidget,
+                                                          void* vp) {
+  return FWL_ERR_Succeeded;
+}
+FWL_ERR CFWL_SDAdapterWidgetMgr::GetWidgetRect(IFWL_Widget* pWidget,
+                                               CFX_RectF& rect) {
+  return FWL_ERR_Succeeded;
+}
+FWL_ERR CFWL_SDAdapterWidgetMgr::SetWidgetIcon(IFWL_Widget* pWidget,
+                                               const CFX_DIBitmap* pIcon,
+                                               FX_BOOL bBig) {
+  return FWL_ERR_Succeeded;
+}
+FWL_ERR CFWL_SDAdapterWidgetMgr::SetWidgetCaption(
+    IFWL_Widget* pWidget,
+    const CFX_WideStringC& wsCaption) {
+  return FWL_ERR_Succeeded;
+}
+FWL_ERR CFWL_SDAdapterWidgetMgr::SetBorderRegion(IFWL_Widget* pWidget,
+                                                 CFX_Path* pPath) {
+  return FWL_ERR_Succeeded;
+}
+FWL_ERR CFWL_SDAdapterWidgetMgr::SetTransparent(IFWL_Widget* pWidget,
+                                                FX_DWORD dwAlpha) {
+  return FWL_ERR_Succeeded;
+}
+FWL_ERR CFWL_SDAdapterWidgetMgr::SetFullScreen(IFWL_Widget* pWidget,
+                                               FX_BOOL bFullScreen) {
+  return FWL_ERR_Succeeded;
+}
+FX_BOOL CFWL_SDAdapterWidgetMgr::CheckMessage() {
+  return TRUE;
+}
+FX_BOOL CFWL_SDAdapterWidgetMgr::IsIdleMessage() {
+  return TRUE;
+}
+FWL_ERR CFWL_SDAdapterWidgetMgr::DispatchMessage() {
+  return FWL_ERR_Succeeded;
+}
+FWL_ERR CFWL_SDAdapterWidgetMgr::GetWidgetDC(IFWL_Widget* pWidget, void*& pDC) {
+  return FWL_ERR_Succeeded;
+}
+FWL_ERR CFWL_SDAdapterWidgetMgr::ReleaseWidgetDC(IFWL_Widget* pWidget,
+                                                 void* pDC,
+                                                 CFX_RectF* pClip) {
+  return FWL_ERR_Succeeded;
+}
+void* CFWL_SDAdapterWidgetMgr::GetWindow(IFWL_Widget* pWidget) {
+  return NULL;
+}
+FX_DWORD CFWL_SDAdapterWidgetMgr::GetKeyState(FX_DWORD dwVirtKey) {
+  return 0;
+}
+FWL_ERR CFWL_SDAdapterWidgetMgr::RunLoop(IFWL_Widget* widget) {
+  return FWL_ERR_Succeeded;
+}
+FWL_ERR CFWL_SDAdapterWidgetMgr::EndLoop() {
+  return FWL_ERR_Succeeded;
+}
+FWL_ERR CFWL_SDAdapterWidgetMgr::InitMenu(IFWL_Menu* pMenu,
+                                          IFWL_MenuDP* pMenuData) {
+  return FWL_ERR_Succeeded;
+}
+FWL_ERR CFWL_SDAdapterWidgetMgr::UpdateMenu(IFWL_Menu* pMenu,
+                                            const void* hItem,
+                                            int32_t iType) {
+  return FWL_ERR_Succeeded;
+}
+int32_t CFWL_SDAdapterWidgetMgr::TrackPopupMenu(IFWL_Menu* pMenu,
+                                                IFWL_MenuDP* pMenuData) {
+  return 0;
+}
+FWL_ERR CFWL_SDAdapterWidgetMgr::SetMessageHook(IFWL_AdapterMessageHook* hook) {
+  return FWL_ERR_Succeeded;
+}
+FWL_ERR CFWL_SDAdapterWidgetMgr::GetSystemBorder(FX_FLOAT& l,
+                                                 FX_FLOAT& t,
+                                                 FX_FLOAT& r,
+                                                 FX_FLOAT& b) {
+  return FWL_ERR_Succeeded;
+}
+FX_BOOL CFWL_SDAdapterWidgetMgr::GetPopupPos(IFWL_Widget* pWidget,
+                                             FX_FLOAT fMinHeight,
+                                             FX_FLOAT fMaxHeight,
+                                             const CFX_RectF& rtAnchor,
+                                             CFX_RectF& rtPopup) {
+  return FWL_ERR_Succeeded;
+}
+CFWL_SDAdapterThreadMgr::CFWL_SDAdapterThreadMgr() {}
+CFWL_SDAdapterThreadMgr::~CFWL_SDAdapterThreadMgr() {}
+FWL_ERR CFWL_SDAdapterThreadMgr::Start(IFWL_Thread* pThread,
+                                       FWL_HTHREAD& hThread,
+                                       FX_BOOL bSuspended) {
+  return FWL_ERR_Succeeded;
+}
+FWL_ERR CFWL_SDAdapterThreadMgr::Resume(FWL_HTHREAD hThread) {
+  return FWL_ERR_Succeeded;
+}
+FWL_ERR CFWL_SDAdapterThreadMgr::Suspend(FWL_HTHREAD hThread) {
+  return FWL_ERR_Succeeded;
+}
+FWL_ERR CFWL_SDAdapterThreadMgr::Kill(FWL_HTHREAD hThread, int32_t iExitCode) {
+  return FWL_ERR_Succeeded;
+}
+FWL_ERR CFWL_SDAdapterThreadMgr::Stop(FWL_HTHREAD hThread, int32_t iExitCode) {
+  return FWL_ERR_Succeeded;
+}
+IFWL_Thread* CFWL_SDAdapterThreadMgr::GetCurrentThread() {
+  return FWL_GetApp();
+}
diff --git a/xfa/fwl/core/fwl_targetimp.cpp b/xfa/fwl/core/fwl_targetimp.cpp
new file mode 100644
index 0000000000..d1f92d0307
--- /dev/null
+++ b/xfa/fwl/core/fwl_targetimp.cpp
@@ -0,0 +1,44 @@
+// 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 "xfa/fwl/core/fwl_targetimp.h"
+
+FWL_ERR IFWL_Target::GetClassName(CFX_WideString& wsClass) const {
+  return m_pImpl->GetClassName(wsClass);
+}
+FX_DWORD IFWL_Target::GetClassID() const {
+  return m_pImpl->GetClassID();
+}
+FX_BOOL IFWL_Target::IsInstance(const CFX_WideStringC& wsClass) const {
+  return m_pImpl->IsInstance(wsClass);
+}
+FWL_ERR IFWL_Target::Initialize() {
+  return m_pImpl->Initialize();
+}
+FWL_ERR IFWL_Target::Finalize() {
+  return m_pImpl->Finalize();
+}
+IFWL_Target::~IFWL_Target() {
+  delete m_pImpl;
+}
+CFWL_TargetImp::CFWL_TargetImp() {}
+CFWL_TargetImp::~CFWL_TargetImp() {}
+FWL_ERR CFWL_TargetImp::GetClassName(CFX_WideString& wsClass) const {
+  wsClass.Empty();
+  return FWL_ERR_Succeeded;
+}
+FX_DWORD CFWL_TargetImp::GetClassID() const {
+  return 0;
+}
+FX_BOOL CFWL_TargetImp::IsInstance(const CFX_WideStringC& wsClass) const {
+  return FALSE;
+}
+FWL_ERR CFWL_TargetImp::Initialize() {
+  return FWL_ERR_Succeeded;
+}
+FWL_ERR CFWL_TargetImp::Finalize() {
+  return FWL_ERR_Succeeded;
+}
diff --git a/xfa/fwl/core/fwl_targetimp.h b/xfa/fwl/core/fwl_targetimp.h
new file mode 100644
index 0000000000..8aeca79708
--- /dev/null
+++ b/xfa/fwl/core/fwl_targetimp.h
@@ -0,0 +1,27 @@
+// Copyright 2014 PDFium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
+
+#ifndef XFA_FWL_CORE_FWL_TARGETIMP_H_
+#define XFA_FWL_CORE_FWL_TARGETIMP_H_
+
+#include "core/include/fxcrt/fx_basic.h"
+#include "xfa/include/fwl/core/fwl_target.h"
+
+class CFWL_TargetImp {
+ public:
+  virtual ~CFWL_TargetImp();
+
+  virtual FWL_ERR GetClassName(CFX_WideString& wsClass) const;
+  virtual FX_DWORD GetClassID() const;
+  virtual FX_BOOL IsInstance(const CFX_WideStringC& wsClass) const;
+  virtual FWL_ERR Initialize();
+  virtual FWL_ERR Finalize();
+
+ protected:
+  CFWL_TargetImp();
+};
+
+#endif  // XFA_FWL_CORE_FWL_TARGETIMP_H_
diff --git a/xfa/fwl/core/fwl_threadimp.cpp b/xfa/fwl/core/fwl_threadimp.cpp
new file mode 100644
index 0000000000..e0ec0b01e7
--- /dev/null
+++ b/xfa/fwl/core/fwl_threadimp.cpp
@@ -0,0 +1,38 @@
+// 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 "xfa/fwl/core/fwl_threadimp.h"
+
+#include "xfa/fwl/core/fwl_appimp.h"
+#include "xfa/fwl/core/fwl_noteimp.h"
+#include "xfa/fwl/core/fwl_targetimp.h"
+
+void IFWL_Thread::Release() {
+  delete m_pImpl;
+}
+FWL_ERR IFWL_Thread::Run(FWL_HTHREAD hThread) {
+  return m_pImpl->Run(hThread);
+}
+IFWL_NoteDriver* IFWL_NoteThread::GetNoteDriver() {
+  return static_cast<CFWL_NoteThreadImp*>(GetImpl())->GetNoteDriver();
+}
+
+FWL_ERR CFWL_ThreadImp::Run(FWL_HTHREAD hThread) {
+  return FWL_ERR_Succeeded;
+}
+CFWL_NoteThreadImp::CFWL_NoteThreadImp(IFWL_NoteThread* pIface)
+    : CFWL_ThreadImp(pIface), m_pNoteDriver(new CFWL_NoteDriver) {}
+CFWL_NoteThreadImp::~CFWL_NoteThreadImp() {
+  delete m_pNoteDriver;
+}
+FWL_ERR CFWL_NoteThreadImp::Run(FWL_HTHREAD hThread) {
+  if (!m_pNoteDriver)
+    return FWL_ERR_Indefinite;
+  return m_pNoteDriver->Run();
+}
+IFWL_NoteDriver* CFWL_NoteThreadImp::GetNoteDriver() {
+  return m_pNoteDriver;
+}
diff --git a/xfa/fwl/core/fwl_threadimp.h b/xfa/fwl/core/fwl_threadimp.h
new file mode 100644
index 0000000000..591849bc08
--- /dev/null
+++ b/xfa/fwl/core/fwl_threadimp.h
@@ -0,0 +1,40 @@
+// Copyright 2014 PDFium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
+
+#ifndef XFA_FWL_CORE_FWL_THREADIMP_H_
+#define XFA_FWL_CORE_FWL_THREADIMP_H_
+
+#include "xfa/include/fwl/core/fwl_thread.h"  // For FWL_HTHREAD.
+
+class CFWL_NoteDriver;
+class IFWL_NoteDriver;
+
+class CFWL_ThreadImp {
+ public:
+  virtual ~CFWL_ThreadImp() {}
+  IFWL_Thread* GetInterface() const { return m_pIface; }
+  virtual FWL_ERR Run(FWL_HTHREAD hThread);
+
+ protected:
+  CFWL_ThreadImp(IFWL_Thread* pIface) : m_pIface(pIface) {}
+
+ private:
+  IFWL_Thread* const m_pIface;
+};
+
+class CFWL_NoteThreadImp : public CFWL_ThreadImp {
+ public:
+  CFWL_NoteThreadImp(IFWL_NoteThread* pIface);
+  virtual ~CFWL_NoteThreadImp();
+
+  FWL_ERR Run(FWL_HTHREAD hThread) override;
+  virtual IFWL_NoteDriver* GetNoteDriver();
+
+ protected:
+  CFWL_NoteDriver* const m_pNoteDriver;
+};
+
+#endif  // XFA_FWL_CORE_FWL_THREADIMP_H_
diff --git a/xfa/fwl/core/fwl_timerimp.cpp b/xfa/fwl/core/fwl_timerimp.cpp
new file mode 100644
index 0000000000..d9741f6fd4
--- /dev/null
+++ b/xfa/fwl/core/fwl_timerimp.cpp
@@ -0,0 +1,36 @@
+// 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 "xfa/fwl/core/fwl_appimp.h"
+#include "xfa/fwl/core/fwl_targetimp.h"
+#include "xfa/fwl/core/fwl_threadimp.h"
+#include "xfa/include/fwl/adapter/fwl_adapternative.h"
+#include "xfa/include/fwl/adapter/fwl_adaptertimermgr.h"
+#include "xfa/include/fwl/core/fwl_app.h"
+#include "xfa/include/fwl/core/fwl_timer.h"
+
+FWL_HTIMER FWL_StartTimer(IFWL_Timer* pTimer,
+                          FX_DWORD dwElapse,
+                          FX_BOOL bImmediately) {
+  IFWL_AdapterNative* pAdapterNative = FWL_GetAdapterNative();
+  if (!pAdapterNative)
+    return NULL;
+  IFWL_AdapterTimerMgr* pAdapterTimerMgr = pAdapterNative->GetTimerMgr();
+  if (!pAdapterTimerMgr)
+    return NULL;
+  FWL_HTIMER hTimer = NULL;
+  pAdapterTimerMgr->Start(pTimer, dwElapse, hTimer, bImmediately);
+  return hTimer;
+}
+int32_t FWL_StopTimer(FWL_HTIMER hTimer) {
+  IFWL_AdapterNative* pAdapterNative = FWL_GetAdapterNative();
+  if (!pAdapterNative)
+    return FWL_ERR_Indefinite;
+  IFWL_AdapterTimerMgr* pAdapterTimerMgr = pAdapterNative->GetTimerMgr();
+  if (!pAdapterTimerMgr)
+    return FWL_ERR_Indefinite;
+  return pAdapterTimerMgr->Stop(hTimer);
+}
diff --git a/xfa/fwl/core/fwl_widgetimp.cpp b/xfa/fwl/core/fwl_widgetimp.cpp
new file mode 100644
index 0000000000..18429681c5
--- /dev/null
+++ b/xfa/fwl/core/fwl_widgetimp.cpp
@@ -0,0 +1,1101 @@
+// 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 "xfa/fwl/core/fwl_widgetimp.h"
+
+#include <algorithm>
+
+#include "xfa/fde/tto/fde_textout.h"
+#include "xfa/fwl/core/fwl_appimp.h"
+#include "xfa/fwl/core/fwl_noteimp.h"
+#include "xfa/fwl/core/fwl_targetimp.h"
+#include "xfa/fwl/core/fwl_threadimp.h"
+#include "xfa/fwl/core/fwl_widgetmgrimp.h"
+#include "xfa/include/fwl/adapter/fwl_adapternative.h"
+#include "xfa/include/fwl/adapter/fwl_adapterthreadmgr.h"
+#include "xfa/include/fwl/adapter/fwl_adapterwidgetmgr.h"
+#include "xfa/include/fwl/basewidget/fwl_combobox.h"
+#include "xfa/include/fwl/basewidget/fwl_datetimepicker.h"
+#include "xfa/include/fwl/basewidget/fwl_menu.h"
+#include "xfa/include/fwl/core/fwl_app.h"
+#include "xfa/include/fwl/core/fwl_content.h"
+#include "xfa/include/fwl/core/fwl_form.h"
+#include "xfa/include/fwl/core/fwl_theme.h"
+
+FWL_ERR IFWL_Widget::GetWidgetRect(CFX_RectF& rect, FX_BOOL bAutoSize) {
+  return static_cast<CFWL_WidgetImp*>(GetImpl())
+      ->GetWidgetRect(rect, bAutoSize);
+}
+FWL_ERR IFWL_Widget::GetGlobalRect(CFX_RectF& rect) {
+  return static_cast<CFWL_WidgetImp*>(GetImpl())->GetGlobalRect(rect);
+}
+FWL_ERR IFWL_Widget::SetWidgetRect(const CFX_RectF& rect) {
+  return static_cast<CFWL_WidgetImp*>(GetImpl())->SetWidgetRect(rect);
+}
+FWL_ERR IFWL_Widget::GetClientRect(CFX_RectF& rect) {
+  return static_cast<CFWL_WidgetImp*>(GetImpl())->GetClientRect(rect);
+}
+IFWL_Widget* IFWL_Widget::GetParent() {
+  return static_cast<CFWL_WidgetImp*>(GetImpl())->GetParent();
+}
+FWL_ERR IFWL_Widget::SetParent(IFWL_Widget* pParent) {
+  return static_cast<CFWL_WidgetImp*>(GetImpl())->SetParent(pParent);
+}
+IFWL_Widget* IFWL_Widget::GetOwner() {
+  return static_cast<CFWL_WidgetImp*>(GetImpl())->GetOwner();
+}
+FWL_ERR IFWL_Widget::SetOwner(IFWL_Widget* pOwner) {
+  return static_cast<CFWL_WidgetImp*>(GetImpl())->SetOwner(pOwner);
+}
+IFWL_Widget* IFWL_Widget::GetOuter() {
+  return static_cast<CFWL_WidgetImp*>(GetImpl())->GetOuter();
+}
+FX_DWORD IFWL_Widget::GetStyles() {
+  return static_cast<CFWL_WidgetImp*>(GetImpl())->GetStyles();
+}
+FWL_ERR IFWL_Widget::ModifyStyles(FX_DWORD dwStylesAdded,
+                                  FX_DWORD dwStylesRemoved) {
+  return static_cast<CFWL_WidgetImp*>(GetImpl())
+      ->ModifyStyles(dwStylesAdded, dwStylesRemoved);
+}
+FX_DWORD IFWL_Widget::GetStylesEx() {
+  return static_cast<CFWL_WidgetImp*>(GetImpl())->GetStylesEx();
+}
+FWL_ERR IFWL_Widget::ModifyStylesEx(FX_DWORD dwStylesExAdded,
+                                    FX_DWORD dwStylesExRemoved) {
+  return static_cast<CFWL_WidgetImp*>(GetImpl())
+      ->ModifyStylesEx(dwStylesExAdded, dwStylesExRemoved);
+}
+FX_DWORD IFWL_Widget::GetStates() {
+  return static_cast<CFWL_WidgetImp*>(GetImpl())->GetStates();
+}
+FWL_ERR IFWL_Widget::SetStates(FX_DWORD dwStates, FX_BOOL bSet) {
+  return static_cast<CFWL_WidgetImp*>(GetImpl())->SetStates(dwStates, bSet);
+}
+FWL_ERR IFWL_Widget::SetPrivateData(void* module_id,
+                                    void* pData,
+                                    PD_CALLBACK_FREEDATA callback) {
+  return static_cast<CFWL_WidgetImp*>(GetImpl())
+      ->SetPrivateData(module_id, pData, callback);
+}
+void* IFWL_Widget::GetPrivateData(void* module_id) {
+  return static_cast<CFWL_WidgetImp*>(GetImpl())->GetPrivateData(module_id);
+}
+FWL_ERR IFWL_Widget::Update() {
+  return static_cast<CFWL_WidgetImp*>(GetImpl())->Update();
+}
+FWL_ERR IFWL_Widget::LockUpdate() {
+  return static_cast<CFWL_WidgetImp*>(GetImpl())->LockUpdate();
+}
+FWL_ERR IFWL_Widget::UnlockUpdate() {
+  return static_cast<CFWL_WidgetImp*>(GetImpl())->UnlockUpdate();
+}
+FX_DWORD IFWL_Widget::HitTest(FX_FLOAT fx, FX_FLOAT fy) {
+  return static_cast<CFWL_WidgetImp*>(GetImpl())->HitTest(fx, fy);
+}
+FWL_ERR IFWL_Widget::TransformTo(IFWL_Widget* pWidget,
+                                 FX_FLOAT& fx,
+                                 FX_FLOAT& fy) {
+  return static_cast<CFWL_WidgetImp*>(GetImpl())->TransformTo(pWidget, fx, fy);
+}
+FWL_ERR IFWL_Widget::TransformTo(IFWL_Widget* pWidget, CFX_RectF& rt) {
+  return static_cast<CFWL_WidgetImp*>(GetImpl())->TransformTo(pWidget, rt);
+}
+FWL_ERR IFWL_Widget::GetMatrix(CFX_Matrix& matrix, FX_BOOL bGlobal) {
+  return static_cast<CFWL_WidgetImp*>(GetImpl())->GetMatrix(matrix, bGlobal);
+}
+FWL_ERR IFWL_Widget::SetMatrix(const CFX_Matrix& matrix) {
+  return static_cast<CFWL_WidgetImp*>(GetImpl())->SetMatrix(matrix);
+}
+FWL_ERR IFWL_Widget::DrawWidget(CFX_Graphics* pGraphics,
+                                const CFX_Matrix* pMatrix) {
+  return static_cast<CFWL_WidgetImp*>(GetImpl())
+      ->DrawWidget(pGraphics, pMatrix);
+}
+IFWL_ThemeProvider* IFWL_Widget::GetThemeProvider() {
+  return static_cast<CFWL_WidgetImp*>(GetImpl())->GetThemeProvider();
+}
+FWL_ERR IFWL_Widget::SetThemeProvider(IFWL_ThemeProvider* pThemeProvider) {
+  return static_cast<CFWL_WidgetImp*>(GetImpl())
+      ->SetThemeProvider(pThemeProvider);
+}
+FWL_ERR IFWL_Widget::SetDataProvider(IFWL_DataProvider* pDataProvider) {
+  return static_cast<CFWL_WidgetImp*>(GetImpl())
+      ->SetDataProvider(pDataProvider);
+}
+IFWL_WidgetDelegate* IFWL_Widget::SetDelegate(IFWL_WidgetDelegate* pDelegate) {
+  return static_cast<CFWL_WidgetImp*>(GetImpl())->SetDelegate(pDelegate);
+}
+IFWL_NoteThread* IFWL_Widget::GetOwnerThread() const {
+  return static_cast<CFWL_WidgetImp*>(GetImpl())->GetOwnerThread();
+}
+CFX_SizeF IFWL_Widget::GetOffsetFromParent(IFWL_Widget* pParent) {
+  return static_cast<CFWL_WidgetImp*>(GetImpl())->GetOffsetFromParent(pParent);
+}
+FWL_ERR CFWL_WidgetImp::Initialize() {
+  IFWL_App* pApp = FWL_GetApp();
+  if (!pApp)
+    return FWL_ERR_Indefinite;
+  IFWL_AdapterNative* pAdapter = pApp->GetAdapterNative();
+  if (!pAdapter)
+    return FWL_ERR_Indefinite;
+  IFWL_AdapterThreadMgr* pAdapterThread = pAdapter->GetThreadMgr();
+  if (!pAdapterThread)
+    return FWL_ERR_Indefinite;
+  SetOwnerThread(static_cast<CFWL_NoteThreadImp*>(
+      pAdapterThread->GetCurrentThread()->GetImpl()));
+  IFWL_Widget* pParent = m_pProperties->m_pParent;
+  m_pWidgetMgr->InsertWidget(pParent, m_pInterface);
+  if (!IsChild()) {
+    {
+      IFWL_Widget* pOwner = m_pProperties->m_pOwner;
+      if (pOwner) {
+        m_pWidgetMgr->SetOwner(pOwner, m_pInterface);
+      }
+    }
+    m_pWidgetMgr->CreateWidget_Native(m_pInterface);
+  }
+  return FWL_ERR_Succeeded;
+}
+FWL_ERR CFWL_WidgetImp::Finalize() {
+  NotifyDriver();
+  IFWL_Form* pForm = static_cast<IFWL_Form*>(
+      FWL_GetWidgetMgr()->GetWidget(m_pInterface, FWL_WGTRELATION_SystemForm));
+  if (pForm && pForm != m_pInterface) {
+    IFWL_Content* pContent = pForm->GetContent();
+    if (pContent) {
+      pContent->RemoveWidget(m_pInterface);
+    }
+  }
+  if (!IsChild()) {
+    m_pWidgetMgr->DestroyWidget_Native(m_pInterface);
+  }
+  m_pWidgetMgr->RemoveWidget(m_pInterface);
+  return FWL_ERR_Succeeded;
+}
+FWL_ERR CFWL_WidgetImp::GetWidgetRect(CFX_RectF& rect, FX_BOOL bAutoSize) {
+  if (bAutoSize) {
+    if (HasEdge()) {
+      FX_FLOAT fEdge = GetEdgeWidth();
+      rect.Inflate(fEdge, fEdge);
+    }
+    if (HasBorder()) {
+      FX_FLOAT fBorder = GetBorderSize();
+      rect.Inflate(fBorder, fBorder);
+    }
+  } else {
+    rect = m_pProperties->m_rtWidget;
+  }
+  return FWL_ERR_Succeeded;
+}
+FWL_ERR CFWL_WidgetImp::GetGlobalRect(CFX_RectF& rect) {
+  IFWL_Widget* pForm =
+      m_pWidgetMgr->GetWidget(m_pInterface, FWL_WGTRELATION_SystemForm);
+  if (!pForm)
+    return FWL_ERR_Indefinite;
+  rect.Set(0, 0, m_pProperties->m_rtWidget.width,
+           m_pProperties->m_rtWidget.height);
+  if (pForm == m_pInterface) {
+    return FWL_ERR_Succeeded;
+  }
+  return TransformTo(pForm, rect);
+}
+FWL_ERR CFWL_WidgetImp::SetWidgetRect(const CFX_RectF& rect) {
+  CFX_RectF rtOld = m_pProperties->m_rtWidget;
+  m_pProperties->m_rtWidget = rect;
+  if (IsChild()) {
+    if (FXSYS_fabs(rtOld.width - rect.width) > 0.5f ||
+        FXSYS_fabs(rtOld.height - rect.height) > 0.5f) {
+      CFWL_EvtSizeChanged ev;
+      ev.m_pSrcTarget = m_pInterface;
+      ev.m_rtOld = rtOld;
+      ev.m_rtNew = rect;
+      IFWL_WidgetDelegate* pDelegate = SetDelegate(NULL);
+      if (pDelegate) {
+        pDelegate->OnProcessEvent(&ev);
+      }
+    }
+    return FWL_ERR_Succeeded;
+  }
+  m_pWidgetMgr->SetWidgetRect_Native(m_pInterface, rect);
+  return FWL_ERR_Succeeded;
+}
+FWL_ERR CFWL_WidgetImp::GetClientRect(CFX_RectF& rect) {
+  GetEdgeRect(rect);
+  if (HasEdge()) {
+    FX_FLOAT fEdge = GetEdgeWidth();
+    rect.Deflate(fEdge, fEdge);
+  }
+  return FWL_ERR_Succeeded;
+}
+IFWL_Widget* CFWL_WidgetImp::GetParent() {
+  return m_pWidgetMgr->GetWidget(m_pInterface, FWL_WGTRELATION_Parent);
+}
+FWL_ERR CFWL_WidgetImp::SetParent(IFWL_Widget* pParent) {
+  m_pProperties->m_pParent = pParent;
+  m_pWidgetMgr->SetParent(pParent, m_pInterface);
+  return FWL_ERR_Succeeded;
+}
+IFWL_Widget* CFWL_WidgetImp::GetOwner() {
+  return m_pWidgetMgr->GetWidget(m_pInterface, FWL_WGTRELATION_Owner);
+}
+FWL_ERR CFWL_WidgetImp::SetOwner(IFWL_Widget* pOwner) {
+  m_pProperties->m_pOwner = pOwner;
+  m_pWidgetMgr->SetOwner(pOwner, m_pInterface);
+  return FWL_ERR_Succeeded;
+}
+IFWL_Widget* CFWL_WidgetImp::GetOuter() {
+  return m_pOuter;
+}
+FX_DWORD CFWL_WidgetImp::GetStyles() {
+  return m_pProperties->m_dwStyles;
+}
+FWL_ERR CFWL_WidgetImp::ModifyStyles(FX_DWORD dwStylesAdded,
+                                     FX_DWORD dwStylesRemoved) {
+  m_pProperties->m_dwStyles =
+      (m_pProperties->m_dwStyles & ~dwStylesRemoved) | dwStylesAdded;
+  return FWL_ERR_Succeeded;
+}
+FX_DWORD CFWL_WidgetImp::GetStylesEx() {
+  return m_pProperties->m_dwStyleExes;
+}
+FWL_ERR CFWL_WidgetImp::ModifyStylesEx(FX_DWORD dwStylesExAdded,
+                                       FX_DWORD dwStylesExRemoved) {
+  m_pProperties->m_dwStyleExes =
+      (m_pProperties->m_dwStyleExes & ~dwStylesExRemoved) | dwStylesExAdded;
+  return FWL_ERR_Succeeded;
+}
+FX_DWORD CFWL_WidgetImp::GetStates() {
+  return m_pProperties->m_dwStates;
+}
+static void NotifyHideChildWidget(IFWL_WidgetMgr* widgetMgr,
+                                  IFWL_Widget* widget,
+                                  CFWL_NoteDriver* noteDriver) {
+  IFWL_Widget* child = widgetMgr->GetWidget(widget, FWL_WGTRELATION_FirstChild);
+  while (child) {
+    noteDriver->NotifyTargetHide(child);
+    NotifyHideChildWidget(widgetMgr, child, noteDriver);
+    child = widgetMgr->GetWidget(child, FWL_WGTRELATION_NextSibling);
+  }
+}
+FWL_ERR CFWL_WidgetImp::SetStates(FX_DWORD dwStates, FX_BOOL bSet) {
+  bSet ? (m_pProperties->m_dwStates |= dwStates)
+       : (m_pProperties->m_dwStates &= ~dwStates);
+  FWL_ERR ret = FWL_ERR_Succeeded;
+  if (dwStates & FWL_WGTSTATE_Invisible) {
+    if (bSet) {
+      ret = m_pWidgetMgr->HideWidget_Native(m_pInterface);
+      CFWL_NoteDriver* noteDriver =
+          static_cast<CFWL_NoteDriver*>(GetOwnerThread()->GetNoteDriver());
+      IFWL_WidgetMgr* widgetMgr = FWL_GetWidgetMgr();
+      noteDriver->NotifyTargetHide(m_pInterface);
+      IFWL_Widget* child =
+          widgetMgr->GetWidget(m_pInterface, FWL_WGTRELATION_FirstChild);
+      while (child) {
+        noteDriver->NotifyTargetHide(child);
+        NotifyHideChildWidget(widgetMgr, child, noteDriver);
+        child = widgetMgr->GetWidget(child, FWL_WGTRELATION_NextSibling);
+      }
+    } else {
+      ret = m_pWidgetMgr->ShowWidget_Native(m_pInterface);
+    }
+  }
+  return ret;
+}
+FWL_ERR CFWL_WidgetImp::SetPrivateData(void* module_id,
+                                       void* pData,
+                                       PD_CALLBACK_FREEDATA callback) {
+  if (!m_pPrivateData) {
+    m_pPrivateData = new CFX_PrivateData;
+  }
+  m_pPrivateData->SetPrivateData(module_id, pData, callback);
+  return FWL_ERR_Succeeded;
+}
+void* CFWL_WidgetImp::GetPrivateData(void* module_id) {
+  if (!m_pPrivateData)
+    return NULL;
+  return m_pPrivateData->GetPrivateData(module_id);
+}
+FWL_ERR CFWL_WidgetImp::Update() {
+  return FWL_ERR_Succeeded;
+}
+FWL_ERR CFWL_WidgetImp::LockUpdate() {
+  m_iLock++;
+  return FWL_ERR_Succeeded;
+}
+FWL_ERR CFWL_WidgetImp::UnlockUpdate() {
+  if (IsLocked()) {
+    m_iLock--;
+  }
+  return FWL_ERR_Succeeded;
+}
+FX_DWORD CFWL_WidgetImp::HitTest(FX_FLOAT fx, FX_FLOAT fy) {
+  CFX_RectF rtClient;
+  GetClientRect(rtClient);
+  if (rtClient.Contains(fx, fy)) {
+    return FWL_WGTHITTEST_Client;
+  }
+  if (HasEdge()) {
+    CFX_RectF rtEdge;
+    GetEdgeRect(rtEdge);
+    if (rtEdge.Contains(fx, fy)) {
+      return FWL_WGTHITTEST_Edge;
+    }
+  }
+  if (HasBorder()) {
+    CFX_RectF rtRelative;
+    GetRelativeRect(rtRelative);
+    if (rtRelative.Contains(fx, fy)) {
+      return FWL_WGTHITTEST_Border;
+    }
+  }
+  return FWL_WGTHITTEST_Unknown;
+}
+FWL_ERR CFWL_WidgetImp::TransformTo(IFWL_Widget* pWidget,
+                                    FX_FLOAT& fx,
+                                    FX_FLOAT& fy) {
+  if (m_pWidgetMgr->IsFormDisabled()) {
+    CFX_SizeF szOffset;
+    if (IsParent(pWidget)) {
+      szOffset = GetOffsetFromParent(pWidget);
+    } else {
+      szOffset = pWidget->GetOffsetFromParent(m_pInterface);
+      szOffset.x = -szOffset.x;
+      szOffset.y = -szOffset.y;
+    }
+    fx += szOffset.x;
+    fy += szOffset.y;
+    return FWL_ERR_Succeeded;
+  }
+  CFX_RectF r;
+  CFX_Matrix m;
+  IFWL_Widget* parent = GetParent();
+  if (parent) {
+    GetWidgetRect(r);
+    fx += r.left;
+    fy += r.top;
+    GetMatrix(m, TRUE);
+    m.TransformPoint(fx, fy);
+  }
+  IFWL_Widget* form1 =
+      m_pWidgetMgr->GetWidget(m_pInterface, FWL_WGTRELATION_SystemForm);
+  if (!form1)
+    return FWL_ERR_Indefinite;
+  if (!pWidget) {
+    form1->GetWidgetRect(r);
+    fx += r.left;
+    fy += r.top;
+#ifdef FWL_UseMacSystemBorder
+    if (form1->GetStyles() & FWL_WGTSTYLE_Caption) {
+      FX_FLOAT l, t, r, b;
+      l = t = r = b = 0;
+      FWL_GetAdapterWidgetMgr()->GetSystemBorder(l, t, r, b);
+      fy += t;
+    }
+#endif
+    return FWL_ERR_Succeeded;
+  }
+  IFWL_Widget* form2 =
+      m_pWidgetMgr->GetWidget(pWidget, FWL_WGTRELATION_SystemForm);
+  if (!form2)
+    return FWL_ERR_Indefinite;
+  if (form1 != form2) {
+    form1->GetWidgetRect(r);
+    fx += r.left;
+    fy += r.top;
+    form2->GetWidgetRect(r);
+    fx -= r.left;
+    fy -= r.top;
+#ifdef FWL_UseMacSystemBorder
+    if ((form1->GetStyles() & FWL_WGTSTYLE_Caption) !=
+        (form2->GetStyles() & FWL_WGTSTYLE_Caption)) {
+      FX_FLOAT l, t, r, b;
+      l = t = r = b = 0;
+      FWL_GetAdapterWidgetMgr()->GetSystemBorder(l, t, r, b);
+      (form1->GetStyles() & FWL_WGTSTYLE_Caption) ? (fy += t) : (fy -= t);
+    }
+#endif
+  }
+  parent = pWidget->GetParent();
+  if (parent) {
+    pWidget->GetMatrix(m, TRUE);
+    CFX_Matrix m1;
+    m1.SetIdentity();
+    m1.SetReverse(m);
+    m1.TransformPoint(fx, fy);
+    pWidget->GetWidgetRect(r);
+    fx -= r.left;
+    fy -= r.top;
+  }
+  return FWL_ERR_Succeeded;
+}
+FWL_ERR CFWL_WidgetImp::TransformTo(IFWL_Widget* pWidget, CFX_RectF& rt) {
+  return TransformTo(pWidget, rt.left, rt.top);
+}
+FWL_ERR CFWL_WidgetImp::GetMatrix(CFX_Matrix& matrix, FX_BOOL bGlobal) {
+  if (!m_pProperties)
+    return FWL_ERR_Indefinite;
+  if (bGlobal) {
+    IFWL_Widget* parent = GetParent();
+    CFX_PtrArray parents;
+    while (parent) {
+      parents.Add(parent);
+      parent = parent->GetParent();
+    }
+    matrix.SetIdentity();
+    CFX_Matrix ctmOnParent;
+    CFX_RectF rect;
+    int32_t count = parents.GetSize();
+    for (int32_t i = count - 2; i >= 0; i--) {
+      parent = static_cast<IFWL_Widget*>(parents.GetAt(i));
+      parent->GetMatrix(ctmOnParent, FALSE);
+      parent->GetWidgetRect(rect);
+      matrix.Concat(ctmOnParent, TRUE);
+      matrix.Translate(rect.left, rect.top, TRUE);
+    }
+    matrix.Concat(m_pProperties->m_ctmOnParent, TRUE);
+    parents.RemoveAll();
+  } else {
+    matrix = m_pProperties->m_ctmOnParent;
+  }
+  return FWL_ERR_Succeeded;
+}
+FWL_ERR CFWL_WidgetImp::SetMatrix(const CFX_Matrix& matrix) {
+  if (!m_pProperties)
+    return FWL_ERR_Indefinite;
+  IFWL_Widget* parent = GetParent();
+  if (!parent) {
+    return FWL_ERR_Indefinite;
+  }
+  m_pProperties->m_ctmOnParent = matrix;
+  return FWL_ERR_Succeeded;
+}
+FWL_ERR CFWL_WidgetImp::DrawWidget(CFX_Graphics* pGraphics,
+                                   const CFX_Matrix* pMatrix) {
+  return FWL_ERR_Indefinite;
+}
+IFWL_ThemeProvider* CFWL_WidgetImp::GetThemeProvider() {
+  return m_pProperties->m_pThemeProvider;
+}
+FWL_ERR CFWL_WidgetImp::SetThemeProvider(IFWL_ThemeProvider* pThemeProvider) {
+  m_pProperties->m_pThemeProvider = pThemeProvider;
+  return FWL_ERR_Succeeded;
+}
+FWL_ERR CFWL_WidgetImp::SetDataProvider(IFWL_DataProvider* pDataProvider) {
+  m_pProperties->m_pDataProvider = pDataProvider;
+  return FWL_ERR_Succeeded;
+}
+IFWL_WidgetDelegate* CFWL_WidgetImp::SetDelegate(
+    IFWL_WidgetDelegate* pDelegate) {
+  if (!m_pCurDelegate) {
+    m_pCurDelegate = m_pDelegate;
+  }
+  if (!pDelegate) {
+    return m_pCurDelegate;
+  }
+  IFWL_WidgetDelegate* pOldDelegate = m_pCurDelegate;
+  m_pCurDelegate = pDelegate;
+  return pOldDelegate;
+}
+IFWL_NoteThread* CFWL_WidgetImp::GetOwnerThread() const {
+  return static_cast<IFWL_NoteThread*>(m_pOwnerThread->GetInterface());
+}
+FWL_ERR CFWL_WidgetImp::SetOwnerThread(CFWL_NoteThreadImp* pOwnerThread) {
+  m_pOwnerThread = pOwnerThread;
+  return FWL_ERR_Succeeded;
+}
+IFWL_Widget* CFWL_WidgetImp::GetInterface() const {
+  return m_pInterface;
+}
+void CFWL_WidgetImp::SetInterface(IFWL_Widget* pInterface) {
+  m_pInterface = pInterface;
+}
+CFWL_WidgetImp::CFWL_WidgetImp(const CFWL_WidgetImpProperties& properties,
+                               IFWL_Widget* pOuter)
+    : m_pProperties(new CFWL_WidgetImpProperties),
+      m_pPrivateData(NULL),
+      m_pDelegate(NULL),
+      m_pCurDelegate(NULL),
+      m_pOuter(pOuter),
+      m_pInterface(NULL),
+      m_iLock(0) {
+  *m_pProperties = properties;
+  m_pWidgetMgr = static_cast<CFWL_WidgetMgr*>(FWL_GetWidgetMgr());
+  FXSYS_assert(m_pWidgetMgr != NULL);
+}
+CFWL_WidgetImp::~CFWL_WidgetImp() {
+  if (m_pPrivateData) {
+    delete m_pPrivateData;
+    m_pPrivateData = NULL;
+  }
+  if (m_pProperties) {
+    delete m_pProperties;
+    m_pProperties = NULL;
+  }
+}
+FX_BOOL CFWL_WidgetImp::IsEnabled() const {
+  return (m_pProperties->m_dwStates & FWL_WGTSTATE_Disabled) == 0;
+}
+FX_BOOL CFWL_WidgetImp::IsVisible() const {
+  return (m_pProperties->m_dwStates & FWL_WGTSTATE_Invisible) == 0;
+}
+FX_BOOL CFWL_WidgetImp::IsActive() const {
+  return (m_pProperties->m_dwStates & FWL_WGTSTATE_Deactivated) == 0;
+}
+FX_BOOL CFWL_WidgetImp::IsOverLapper() const {
+  return (m_pProperties->m_dwStyles & FWL_WGTSTYLE_WindowTypeMask) ==
+         FWL_WGTSTYLE_OverLapper;
+}
+FX_BOOL CFWL_WidgetImp::IsPopup() const {
+  return !!(m_pProperties->m_dwStyles & FWL_WGTSTYLE_Popup);
+}
+FX_BOOL CFWL_WidgetImp::IsChild() const {
+  return !!(m_pProperties->m_dwStyles & FWL_WGTSTYLE_Child);
+}
+FX_BOOL CFWL_WidgetImp::IsLocked() const {
+  return m_iLock > 0;
+}
+FX_BOOL CFWL_WidgetImp::IsOffscreen() const {
+  return !!(m_pProperties->m_dwStyles & FWL_WGTSTYLE_Offscreen);
+}
+FX_BOOL CFWL_WidgetImp::HasBorder() const {
+  return !!(m_pProperties->m_dwStyles & FWL_WGTSTYLE_Border);
+}
+FX_BOOL CFWL_WidgetImp::HasEdge() const {
+  return !!(m_pProperties->m_dwStyles & FWL_WGTSTYLE_EdgeMask);
+}
+void CFWL_WidgetImp::GetEdgeRect(CFX_RectF& rtEdge) {
+  rtEdge = m_pProperties->m_rtWidget;
+  rtEdge.left = rtEdge.top = 0;
+  if (HasBorder()) {
+    FX_FLOAT fCX = GetBorderSize();
+    FX_FLOAT fCY = GetBorderSize(FALSE);
+    rtEdge.Deflate(fCX, fCY);
+  }
+}
+FX_FLOAT CFWL_WidgetImp::GetBorderSize(FX_BOOL bCX) {
+  FX_FLOAT* pfBorder = static_cast<FX_FLOAT*>(GetThemeCapacity(
+      bCX ? FWL_WGTCAPACITY_CXBorder : FWL_WGTCAPACITY_CYBorder));
+  if (!pfBorder)
+    return 0;
+  return *pfBorder;
+}
+FX_FLOAT CFWL_WidgetImp::GetEdgeWidth() {
+  FX_DWORD dwCapacity = 0;
+  switch (m_pProperties->m_dwStyles & FWL_WGTSTYLE_EdgeMask) {
+    case FWL_WGTSTYLE_EdgeFlat: {
+      dwCapacity = FWL_WGTCAPACITY_EdgeFlat;
+      break;
+    }
+    case FWL_WGTSTYLE_EdgeRaised: {
+      dwCapacity = FWL_WGTCAPACITY_EdgeRaised;
+      break;
+    }
+    case FWL_WGTSTYLE_EdgeSunken: {
+      dwCapacity = FWL_WGTCAPACITY_EdgeSunken;
+      break;
+    }
+  }
+  if (dwCapacity > 0) {
+    FX_FLOAT* fRet = static_cast<FX_FLOAT*>(GetThemeCapacity(dwCapacity));
+    return fRet ? *fRet : 0;
+  }
+  return 0;
+}
+void CFWL_WidgetImp::GetRelativeRect(CFX_RectF& rect) {
+  rect = m_pProperties->m_rtWidget;
+  rect.left = rect.top = 0;
+}
+void* CFWL_WidgetImp::GetThemeCapacity(FX_DWORD dwCapacity) {
+  IFWL_ThemeProvider* pTheme = GetAvailableTheme();
+  if (!pTheme)
+    return NULL;
+  CFWL_ThemePart part;
+  part.m_pWidget = m_pInterface;
+  return pTheme->GetCapacity(&part, dwCapacity);
+}
+IFWL_ThemeProvider* CFWL_WidgetImp::GetAvailableTheme() {
+  if (m_pProperties->m_pThemeProvider) {
+    return m_pProperties->m_pThemeProvider;
+  }
+  IFWL_Widget* pUp = m_pInterface;
+  do {
+    FWL_WGTRELATION relation = (pUp->GetStyles() & FWL_WGTSTYLE_Popup)
+                                   ? FWL_WGTRELATION_Owner
+                                   : FWL_WGTRELATION_Parent;
+    pUp = m_pWidgetMgr->GetWidget(pUp, relation);
+    if (pUp) {
+      IFWL_ThemeProvider* pRet = pUp->GetThemeProvider();
+      if (pRet && pRet->IsValidWidget(m_pInterface)) {
+        return pRet;
+      }
+    }
+  } while (pUp);
+  return FWL_GetApp()->GetThemeProvider();
+}
+CFWL_WidgetImp* CFWL_WidgetImp::GetRootOuter() {
+  IFWL_Widget* pRet = m_pOuter;
+  if (!pRet)
+    return nullptr;
+  while (IFWL_Widget* pOuter = pRet->GetOuter()) {
+    pRet = pOuter;
+  }
+  return static_cast<CFWL_WidgetImp*>(pRet->GetImpl());
+}
+#define FWL_WGT_CalcHeight 2048
+#define FWL_WGT_CalcWidth 2048
+#define FWL_WGT_CalcMultiLineDefWidth 120.0f
+CFX_SizeF CFWL_WidgetImp::CalcTextSize(const CFX_WideString& wsText,
+                                       IFWL_ThemeProvider* pTheme,
+                                       FX_BOOL bMultiLine,
+                                       int32_t iLineWidth) {
+  if (!pTheme)
+    return CFX_SizeF();
+
+  CFWL_ThemeText calPart;
+  calPart.m_pWidget = m_pInterface;
+  calPart.m_wsText = wsText;
+  calPart.m_dwTTOStyles =
+      bMultiLine ? FDE_TTOSTYLE_LineWrap : FDE_TTOSTYLE_SingleLine;
+  calPart.m_iTTOAlign = FDE_TTOALIGNMENT_TopLeft;
+  CFX_RectF rect;
+  FX_FLOAT fWidth = bMultiLine
+                        ? (iLineWidth > 0 ? (FX_FLOAT)iLineWidth
+                                          : FWL_WGT_CalcMultiLineDefWidth)
+                        : FWL_WGT_CalcWidth;
+  rect.Set(0, 0, fWidth, FWL_WGT_CalcHeight);
+  pTheme->CalcTextRect(&calPart, rect);
+  return CFX_SizeF(rect.width, rect.height);
+}
+void CFWL_WidgetImp::CalcTextRect(const CFX_WideString& wsText,
+                                  IFWL_ThemeProvider* pTheme,
+                                  FX_DWORD dwTTOStyles,
+                                  int32_t iTTOAlign,
+                                  CFX_RectF& rect) {
+  CFWL_ThemeText calPart;
+  calPart.m_pWidget = m_pInterface;
+  calPart.m_wsText = wsText;
+  calPart.m_dwTTOStyles = dwTTOStyles;
+  calPart.m_iTTOAlign = iTTOAlign;
+  pTheme->CalcTextRect(&calPart, rect);
+}
+void CFWL_WidgetImp::SetFocus(FX_BOOL bFocus) {
+  if (m_pWidgetMgr->IsFormDisabled())
+    return;
+  IFWL_NoteThread* pThread = GetOwnerThread();
+  if (!pThread)
+    return;
+  CFWL_NoteDriver* pDriver =
+      static_cast<CFWL_NoteDriver*>(pThread->GetNoteDriver());
+  if (!pDriver)
+    return;
+  IFWL_Widget* curFocus = pDriver->GetFocus();
+  if (bFocus && curFocus != m_pInterface) {
+    pDriver->SetFocus(m_pInterface);
+  } else if (!bFocus && curFocus == m_pInterface) {
+    pDriver->SetFocus(NULL);
+  }
+}
+void CFWL_WidgetImp::SetGrab(FX_BOOL bSet) {
+  IFWL_NoteThread* pThread = GetOwnerThread();
+  if (!pThread)
+    return;
+  CFWL_NoteDriver* pDriver =
+      static_cast<CFWL_NoteDriver*>(pThread->GetNoteDriver());
+  pDriver->SetGrab(m_pInterface, bSet);
+}
+FX_BOOL CFWL_WidgetImp::GetPopupPos(FX_FLOAT fMinHeight,
+                                    FX_FLOAT fMaxHeight,
+                                    const CFX_RectF& rtAnchor,
+                                    CFX_RectF& rtPopup) {
+  if (GetClassID() == FWL_CLASSHASH_Menu) {
+    return GetPopupPosMenu(fMinHeight, fMaxHeight, rtAnchor, rtPopup);
+  } else {
+    if (GetClassID() == FWL_CLASSHASH_ComboBox) {
+      if (m_pWidgetMgr->IsFormDisabled()) {
+        return m_pWidgetMgr->GetAdapterPopupPos(m_pInterface, fMinHeight,
+                                                fMaxHeight, rtAnchor, rtPopup);
+      } else {
+        return GetPopupPosComboBox(fMinHeight, fMaxHeight, rtAnchor, rtPopup);
+      }
+    } else if (GetClassID() == FWL_CLASSHASH_DateTimePicker &&
+               m_pWidgetMgr->IsFormDisabled()) {
+      return m_pWidgetMgr->GetAdapterPopupPos(m_pInterface, fMinHeight,
+                                              fMaxHeight, rtAnchor, rtPopup);
+    } else {
+      return GetPopupPosGeneral(fMinHeight, fMaxHeight, rtAnchor, rtPopup);
+    }
+  }
+  return FALSE;
+}
+FX_BOOL CFWL_WidgetImp::GetPopupPosMenu(FX_FLOAT fMinHeight,
+                                        FX_FLOAT fMaxHeight,
+                                        const CFX_RectF& rtAnchor,
+                                        CFX_RectF& rtPopup) {
+  FX_FLOAT fx = 0;
+  FX_FLOAT fy = 0;
+  FX_FLOAT fScreenWidth = 0;
+  FX_FLOAT fScreenHeight = 0;
+  GetScreenSize(fScreenWidth, fScreenHeight);
+  if (GetStylesEx() & FWL_STYLEEXT_MNU_Vert) {
+    FX_BOOL bLeft = m_pProperties->m_rtWidget.left < 0;
+    FX_FLOAT fRight = rtAnchor.right() + rtPopup.width;
+    TransformTo(NULL, fx, fy);
+    if (fRight + fx > fScreenWidth || bLeft) {
+      rtPopup.Set(rtAnchor.left - rtPopup.width, rtAnchor.top, rtPopup.width,
+                  rtPopup.height);
+    } else {
+      rtPopup.Set(rtAnchor.right(), rtAnchor.top, rtPopup.width,
+                  rtPopup.height);
+    }
+  } else {
+    FX_FLOAT fBottom = rtAnchor.bottom() + rtPopup.height;
+    TransformTo(NULL, fx, fy);
+    if (fBottom + fy > fScreenHeight) {
+      rtPopup.Set(rtAnchor.left, rtAnchor.top - rtPopup.height, rtPopup.width,
+                  rtPopup.height);
+    } else {
+      rtPopup.Set(rtAnchor.left, rtAnchor.bottom(), rtPopup.width,
+                  rtPopup.height);
+    }
+  }
+  rtPopup.Offset(fx, fy);
+  return TRUE;
+}
+FX_BOOL CFWL_WidgetImp::GetPopupPosComboBox(FX_FLOAT fMinHeight,
+                                            FX_FLOAT fMaxHeight,
+                                            const CFX_RectF& rtAnchor,
+                                            CFX_RectF& rtPopup) {
+  FX_FLOAT fx = 0;
+  FX_FLOAT fy = 0;
+  FX_FLOAT fScreenWidth = 0;
+  FX_FLOAT fScreenHeight = 0;
+  GetScreenSize(fScreenWidth, fScreenHeight);
+  FX_FLOAT fPopHeight = rtPopup.height;
+  if (rtPopup.height > fMaxHeight) {
+    fPopHeight = fMaxHeight;
+  } else if (rtPopup.height < fMinHeight) {
+    fPopHeight = fMinHeight;
+  }
+  FX_FLOAT fWidth = std::max(rtAnchor.width, rtPopup.width);
+  FX_FLOAT fBottom = rtAnchor.bottom() + fPopHeight;
+  TransformTo(NULL, fx, fy);
+  if (fBottom + fy > fScreenHeight) {
+    rtPopup.Set(rtAnchor.left, rtAnchor.top - fPopHeight, fWidth, fPopHeight);
+  } else {
+    rtPopup.Set(rtAnchor.left, rtAnchor.bottom(), fWidth, fPopHeight);
+  }
+  rtPopup.Offset(fx, fy);
+  return TRUE;
+}
+FX_BOOL CFWL_WidgetImp::GetPopupPosGeneral(FX_FLOAT fMinHeight,
+                                           FX_FLOAT fMaxHeight,
+                                           const CFX_RectF& rtAnchor,
+                                           CFX_RectF& rtPopup) {
+  FX_FLOAT fx = 0;
+  FX_FLOAT fy = 0;
+  FX_FLOAT fScreenWidth = 0;
+  FX_FLOAT fScreenHeight = 0;
+  GetScreenSize(fScreenWidth, fScreenHeight);
+  TransformTo(NULL, fx, fy);
+  if (rtAnchor.bottom() + fy > fScreenHeight) {
+    rtPopup.Set(rtAnchor.left, rtAnchor.top - rtPopup.height, rtPopup.width,
+                rtPopup.height);
+  } else {
+    rtPopup.Set(rtAnchor.left, rtAnchor.bottom(), rtPopup.width,
+                rtPopup.height);
+  }
+  rtPopup.Offset(fx, fy);
+  return TRUE;
+}
+FX_BOOL CFWL_WidgetImp::GetScreenSize(FX_FLOAT& fx, FX_FLOAT& fy) {
+  return FALSE;
+}
+void CFWL_WidgetImp::RegisterEventTarget(IFWL_Widget* pEventSource,
+                                         FX_DWORD dwFilter) {
+  IFWL_NoteThread* pThread = GetOwnerThread();
+  if (!pThread)
+    return;
+  IFWL_NoteDriver* pNoteDriver = pThread->GetNoteDriver();
+  if (!pNoteDriver)
+    return;
+  pNoteDriver->RegisterEventTarget(m_pInterface, pEventSource, dwFilter);
+}
+void CFWL_WidgetImp::UnregisterEventTarget() {
+  IFWL_NoteThread* pThread = GetOwnerThread();
+  if (!pThread)
+    return;
+  IFWL_NoteDriver* pNoteDriver = pThread->GetNoteDriver();
+  if (!pNoteDriver)
+    return;
+  pNoteDriver->UnregisterEventTarget(m_pInterface);
+}
+void CFWL_WidgetImp::DispatchKeyEvent(CFWL_MsgKey* pNote) {
+  if (!pNote)
+    return;
+  CFWL_EvtKey* pEvent = new CFWL_EvtKey;
+  pEvent->m_pSrcTarget = m_pInterface;
+  pEvent->m_dwCmd = pNote->m_dwCmd;
+  pEvent->m_dwKeyCode = pNote->m_dwKeyCode;
+  pEvent->m_dwFlags = pNote->m_dwFlags;
+  DispatchEvent(pEvent);
+  pEvent->Release();
+}
+void CFWL_WidgetImp::DispatchEvent(CFWL_Event* pEvent) {
+  if (m_pOuter) {
+    IFWL_WidgetDelegate* pDelegate = m_pOuter->SetDelegate(NULL);
+    pDelegate->OnProcessEvent(pEvent);
+    return;
+  }
+  IFWL_NoteThread* pThread = GetOwnerThread();
+  if (!pThread)
+    return;
+  IFWL_NoteDriver* pNoteDriver = pThread->GetNoteDriver();
+  if (!pNoteDriver)
+    return;
+  pNoteDriver->SendNote(pEvent);
+}
+void CFWL_WidgetImp::Repaint(const CFX_RectF* pRect) {
+  if (pRect) {
+    m_pWidgetMgr->RepaintWidget(m_pInterface, pRect);
+    return;
+  }
+  CFX_RectF rect;
+  rect = m_pProperties->m_rtWidget;
+  rect.left = rect.top = 0;
+  m_pWidgetMgr->RepaintWidget(m_pInterface, &rect);
+}
+void CFWL_WidgetImp::DrawBackground(CFX_Graphics* pGraphics,
+                                    int32_t iPartBk,
+                                    IFWL_ThemeProvider* pTheme,
+                                    const CFX_Matrix* pMatrix) {
+  CFX_RectF rtRelative;
+  GetRelativeRect(rtRelative);
+  CFWL_ThemeBackground param;
+  param.m_pWidget = m_pInterface;
+  param.m_iPart = iPartBk;
+  param.m_pGraphics = pGraphics;
+  if (pMatrix) {
+    param.m_matrix.Concat(*pMatrix, TRUE);
+  }
+  param.m_rtPart = rtRelative;
+  pTheme->DrawBackground(&param);
+}
+void CFWL_WidgetImp::DrawBorder(CFX_Graphics* pGraphics,
+                                int32_t iPartBorder,
+                                IFWL_ThemeProvider* pTheme,
+                                const CFX_Matrix* pMatrix) {
+  CFX_RectF rtRelative;
+  GetRelativeRect(rtRelative);
+  CFWL_ThemeBackground param;
+  param.m_pWidget = m_pInterface;
+  param.m_iPart = iPartBorder;
+  param.m_pGraphics = pGraphics;
+  if (pMatrix) {
+    param.m_matrix.Concat(*pMatrix, TRUE);
+  }
+  param.m_rtPart = rtRelative;
+  pTheme->DrawBackground(&param);
+}
+void CFWL_WidgetImp::DrawEdge(CFX_Graphics* pGraphics,
+                              int32_t iPartEdge,
+                              IFWL_ThemeProvider* pTheme,
+                              const CFX_Matrix* pMatrix) {
+  CFX_RectF rtEdge;
+  GetEdgeRect(rtEdge);
+  CFWL_ThemeBackground param;
+  param.m_pWidget = m_pInterface;
+  param.m_iPart = iPartEdge;
+  param.m_pGraphics = pGraphics;
+  if (pMatrix) {
+    param.m_matrix.Concat(*pMatrix, TRUE);
+  }
+  param.m_rtPart = rtEdge;
+  pTheme->DrawBackground(&param);
+}
+void CFWL_WidgetImp::NotifyDriver() {
+  IFWL_NoteThread* pThread = GetOwnerThread();
+  if (!pThread)
+    return;
+  CFWL_NoteDriver* pDriver =
+      static_cast<CFWL_NoteDriver*>(pThread->GetNoteDriver());
+  if (!pDriver)
+    return;
+  pDriver->NotifyTargetDestroy(m_pInterface);
+}
+CFX_SizeF CFWL_WidgetImp::GetOffsetFromParent(IFWL_Widget* pParent) {
+  if (pParent == GetInterface())
+    return CFX_SizeF();
+
+  IFWL_WidgetMgr* pWidgetMgr = FWL_GetWidgetMgr();
+  if (!pWidgetMgr)
+    return CFX_SizeF();
+
+  CFX_SizeF szRet(m_pProperties->m_rtWidget.left,
+                  m_pProperties->m_rtWidget.top);
+
+  IFWL_Widget* pDstWidget = GetParent();
+  while (pDstWidget && pDstWidget != pParent) {
+    CFX_RectF rtDst;
+    pDstWidget->GetWidgetRect(rtDst);
+    szRet += CFX_SizeF(rtDst.left, rtDst.top);
+    pDstWidget = pWidgetMgr->GetWidget(pDstWidget, FWL_WGTRELATION_Parent);
+  }
+  return szRet;
+}
+FX_BOOL CFWL_WidgetImp::IsParent(IFWL_Widget* pParent) {
+  IFWL_Widget* pUpWidget = GetParent();
+  while (pUpWidget) {
+    if (pUpWidget == pParent)
+      return TRUE;
+    pUpWidget = pUpWidget->GetParent();
+  }
+  return FALSE;
+}
+CFWL_WidgetImpDelegate::CFWL_WidgetImpDelegate() {}
+int32_t CFWL_WidgetImpDelegate::OnProcessMessage(CFWL_Message* pMessage) {
+  if (!pMessage->m_pDstTarget)
+    return 0;
+  CFWL_WidgetImp* pWidget =
+      static_cast<CFWL_WidgetImp*>(pMessage->m_pDstTarget->GetImpl());
+  FX_DWORD dwMsgCode = pMessage->GetClassID();
+  switch (dwMsgCode) {
+    case FWL_MSGHASH_Mouse: {
+      CFWL_MsgMouse* pMsgMouse = static_cast<CFWL_MsgMouse*>(pMessage);
+      CFWL_EvtMouse evt;
+      evt.m_pSrcTarget = pWidget->m_pInterface;
+      evt.m_pDstTarget = pWidget->m_pInterface;
+      evt.m_dwCmd = pMsgMouse->m_dwCmd;
+      evt.m_dwFlags = pMsgMouse->m_dwFlags;
+      evt.m_fx = pMsgMouse->m_fx;
+      evt.m_fy = pMsgMouse->m_fy;
+      pWidget->DispatchEvent(&evt);
+      break;
+    }
+    case FWL_MSGHASH_MouseWheel: {
+      CFWL_MsgMouseWheel* pMsgMouseWheel =
+          static_cast<CFWL_MsgMouseWheel*>(pMessage);
+      CFWL_EvtMouseWheel evt;
+      evt.m_pSrcTarget = pWidget->m_pInterface;
+      evt.m_pDstTarget = pWidget->m_pInterface;
+      evt.m_dwFlags = pMsgMouseWheel->m_dwFlags;
+      evt.m_fDeltaX = pMsgMouseWheel->m_fDeltaX;
+      evt.m_fDeltaY = pMsgMouseWheel->m_fDeltaY;
+      evt.m_fx = pMsgMouseWheel->m_fx;
+      evt.m_fy = pMsgMouseWheel->m_fy;
+      pWidget->DispatchEvent(&evt);
+      break;
+    }
+    case FWL_MSGHASH_Key: {
+      CFWL_MsgKey* pMsgKey = static_cast<CFWL_MsgKey*>(pMessage);
+      CFWL_EvtKey evt;
+      evt.m_pSrcTarget = pWidget->m_pInterface;
+      evt.m_pDstTarget = pWidget->m_pInterface;
+      evt.m_dwKeyCode = pMsgKey->m_dwKeyCode;
+      evt.m_dwFlags = pMsgKey->m_dwFlags;
+      evt.m_dwCmd = pMsgKey->m_dwCmd;
+      pWidget->DispatchEvent(&evt);
+      break;
+    }
+    case FWL_MSGHASH_SetFocus: {
+      CFWL_MsgSetFocus* pMsgSetFocus = static_cast<CFWL_MsgSetFocus*>(pMessage);
+      CFWL_EvtSetFocus evt;
+      evt.m_pSrcTarget = pMsgSetFocus->m_pDstTarget;
+      evt.m_pDstTarget = pMsgSetFocus->m_pDstTarget;
+      evt.m_pSetFocus = pWidget->m_pInterface;
+      pWidget->DispatchEvent(&evt);
+      break;
+    }
+    case FWL_MSGHASH_KillFocus: {
+      CFWL_MsgKillFocus* pMsgKillFocus =
+          static_cast<CFWL_MsgKillFocus*>(pMessage);
+      CFWL_EvtKillFocus evt;
+      evt.m_pSrcTarget = pMsgKillFocus->m_pDstTarget;
+      evt.m_pDstTarget = pMsgKillFocus->m_pDstTarget;
+      evt.m_pKillFocus = pWidget->m_pInterface;
+      pWidget->DispatchEvent(&evt);
+      break;
+    }
+    default: {}
+  }
+  return 1;
+}
+FWL_ERR CFWL_WidgetImpDelegate::OnProcessEvent(CFWL_Event* pEvent) {
+  return FWL_ERR_Succeeded;
+}
+FWL_ERR CFWL_WidgetImpDelegate::OnDrawWidget(CFX_Graphics* pGraphics,
+                                             const CFX_Matrix* pMatrix) {
+  CFWL_EvtDraw evt;
+  evt.m_pGraphics = pGraphics;
+  return FWL_ERR_Succeeded;
+}
+class CFWL_CustomImp : public CFWL_WidgetImp {
+ public:
+  CFWL_CustomImp(const CFWL_WidgetImpProperties& properties,
+                 IFWL_Widget* pOuter);
+  virtual FWL_ERR GetWidgetRect(CFX_RectF& rect, FX_BOOL bAutoSize = FALSE);
+  virtual FWL_ERR Update();
+  virtual FWL_ERR SetProxy(IFWL_Proxy* pProxy);
+
+ protected:
+  IFWL_Proxy* m_pProxy;
+};
+CFWL_CustomImp::CFWL_CustomImp(const CFWL_WidgetImpProperties& properties,
+                               IFWL_Widget* pOuter)
+    : CFWL_WidgetImp(properties, pOuter), m_pProxy(NULL) {}
+FWL_ERR CFWL_CustomImp::GetWidgetRect(CFX_RectF& rect, FX_BOOL bAutoSize) {
+  if (m_pProxy &&
+      (m_pProxy->GetWidgetRect(rect, bAutoSize) == FWL_ERR_Succeeded)) {
+    return FWL_ERR_Succeeded;
+  }
+  return CFWL_WidgetImp::GetWidgetRect(rect, bAutoSize);
+}
+FWL_ERR CFWL_CustomImp::Update() {
+  if (m_pProxy) {
+    return m_pProxy->Update();
+  }
+  return CFWL_WidgetImp::Update();
+}
+FWL_ERR CFWL_CustomImp::SetProxy(IFWL_Proxy* pProxy) {
+  m_pProxy = pProxy;
+  return FWL_ERR_Succeeded;
+}
+
+// static
+IFWL_Custom* IFWL_Custom::Create(const CFWL_WidgetImpProperties& properties,
+                                 IFWL_Widget* pOuter) {
+  IFWL_Custom* pCustom = new IFWL_Custom;
+  CFWL_CustomImp* pCustomImpl = new CFWL_CustomImp(properties, pOuter);
+  pCustom->SetImpl(pCustomImpl);
+  pCustomImpl->SetInterface(pCustom);
+  return pCustom;
+}
+IFWL_Custom::IFWL_Custom() {}
+FWL_ERR IFWL_Custom::SetProxy(IFWL_Proxy* pProxy) {
+  return static_cast<CFWL_CustomImp*>(GetImpl())->SetProxy(pProxy);
+}
+void FWL_SetWidgetRect(IFWL_Widget* widget, const CFX_RectF& rect) {
+  static_cast<CFWL_WidgetImp*>(widget->GetImpl())->m_pProperties->m_rtWidget =
+      rect;
+}
+void FWL_SetWidgetStates(IFWL_Widget* widget, FX_DWORD dwStates) {
+  static_cast<CFWL_WidgetImp*>(widget->GetImpl())->m_pProperties->m_dwStates =
+      dwStates;
+}
+void FWL_SetWidgetStyles(IFWL_Widget* widget, FX_DWORD dwStyles) {
+  static_cast<CFWL_WidgetImp*>(widget->GetImpl())->m_pProperties->m_dwStyles =
+      dwStyles;
+}
+FWL_ERR FWL_EnabelWidget(IFWL_Widget* widget, FX_BOOL bEnable) {
+  widget->SetStates(FWL_WGTSTATE_Disabled, !bEnable);
+  IFWL_WidgetMgr* widgetMgr = FWL_GetWidgetMgr();
+  IFWL_Widget* child = widgetMgr->GetWidget(widget, FWL_WGTRELATION_FirstChild);
+  while (child) {
+    FWL_EnabelWidget(child, bEnable);
+    child = widgetMgr->GetWidget(child, FWL_WGTRELATION_NextSibling);
+  }
+  return FWL_ERR_Succeeded;
+}
diff --git a/xfa/fwl/core/fwl_widgetimp.h b/xfa/fwl/core/fwl_widgetimp.h
new file mode 100644
index 0000000000..0aa7beb2fb
--- /dev/null
+++ b/xfa/fwl/core/fwl_widgetimp.h
@@ -0,0 +1,162 @@
+// Copyright 2014 PDFium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
+
+#ifndef XFA_FWL_CORE_FWL_WIDGETIMP_H_
+#define XFA_FWL_CORE_FWL_WIDGETIMP_H_
+
+#include "xfa/fwl/core/fwl_targetimp.h"
+#include "xfa/include/fwl/core/fwl_widget.h"
+
+class CFWL_NoteThreadImp;
+class CFWL_WidgetImpProperties;
+class CFWL_WidgetMgr;
+class IFWL_DataProvider;
+class IFWL_ThemeProvider;
+class IFWL_Widget;
+class IFWL_WidgetDelegate;
+
+class CFWL_WidgetImp : public CFWL_TargetImp {
+ public:
+  virtual FWL_ERR Initialize();
+  virtual FWL_ERR Finalize();
+
+  virtual FWL_ERR GetWidgetRect(CFX_RectF& rect, FX_BOOL bAutoSize = FALSE);
+  virtual FWL_ERR GetGlobalRect(CFX_RectF& rect);
+  virtual FWL_ERR SetWidgetRect(const CFX_RectF& rect);
+  virtual FWL_ERR GetClientRect(CFX_RectF& rect);
+  virtual IFWL_Widget* GetParent();
+  virtual FWL_ERR SetParent(IFWL_Widget* pParent);
+  virtual IFWL_Widget* GetOwner();
+  virtual FWL_ERR SetOwner(IFWL_Widget* pOwner);
+  virtual IFWL_Widget* GetOuter();
+  virtual FX_DWORD GetStyles();
+  virtual FWL_ERR ModifyStyles(FX_DWORD dwStylesAdded,
+                               FX_DWORD dwStylesRemoved);
+  virtual FX_DWORD GetStylesEx();
+  virtual FWL_ERR ModifyStylesEx(FX_DWORD dwStylesExAdded,
+                                 FX_DWORD dwStylesExRemoved);
+  virtual FX_DWORD GetStates();
+  virtual FWL_ERR SetStates(FX_DWORD dwStates, FX_BOOL bSet = TRUE);
+  virtual FWL_ERR SetPrivateData(void* module_id,
+                                 void* pData,
+                                 PD_CALLBACK_FREEDATA callback);
+  virtual void* GetPrivateData(void* module_id);
+  virtual FWL_ERR Update();
+  virtual FWL_ERR LockUpdate();
+  virtual FWL_ERR UnlockUpdate();
+  virtual FX_DWORD HitTest(FX_FLOAT fx, FX_FLOAT fy);
+  virtual FWL_ERR TransformTo(IFWL_Widget* pWidget, FX_FLOAT& fx, FX_FLOAT& fy);
+  virtual FWL_ERR TransformTo(IFWL_Widget* pWidget, CFX_RectF& rt);
+  virtual FWL_ERR GetMatrix(CFX_Matrix& matrix, FX_BOOL bGlobal = FALSE);
+  virtual FWL_ERR SetMatrix(const CFX_Matrix& matrix);
+  virtual FWL_ERR DrawWidget(CFX_Graphics* pGraphics,
+                             const CFX_Matrix* pMatrix = NULL);
+  virtual IFWL_ThemeProvider* GetThemeProvider();
+  virtual FWL_ERR SetThemeProvider(IFWL_ThemeProvider* pThemeProvider);
+  virtual FWL_ERR SetDataProvider(IFWL_DataProvider* pDataProvider);
+  virtual IFWL_WidgetDelegate* SetDelegate(IFWL_WidgetDelegate* pDelegate);
+  virtual IFWL_NoteThread* GetOwnerThread() const;
+  FWL_ERR SetOwnerThread(CFWL_NoteThreadImp* pOwnerThread);
+  IFWL_Widget* GetInterface() const;
+  void SetInterface(IFWL_Widget* pInterface);
+  CFX_SizeF GetOffsetFromParent(IFWL_Widget* pParent);
+
+ protected:
+  CFWL_WidgetImp(const CFWL_WidgetImpProperties& properties,
+                 IFWL_Widget* pOuter);
+  virtual ~CFWL_WidgetImp();
+  FX_BOOL IsEnabled() const;
+  FX_BOOL IsVisible() const;
+  FX_BOOL IsActive() const;
+  FX_BOOL IsOverLapper() const;
+  FX_BOOL IsPopup() const;
+  FX_BOOL IsChild() const;
+  FX_BOOL IsLocked() const;
+  FX_BOOL IsOffscreen() const;
+  FX_BOOL HasBorder() const;
+  FX_BOOL HasEdge() const;
+  void GetEdgeRect(CFX_RectF& rtEdge);
+  FX_FLOAT GetBorderSize(FX_BOOL bCX = TRUE);
+  FX_FLOAT GetEdgeWidth();
+  void GetRelativeRect(CFX_RectF& rect);
+  void* GetThemeCapacity(FX_DWORD dwCapacity);
+  IFWL_ThemeProvider* GetAvailableTheme();
+  CFWL_WidgetImp* GetRootOuter();
+  CFX_SizeF CalcTextSize(const CFX_WideString& wsText,
+                         IFWL_ThemeProvider* pTheme,
+                         FX_BOOL bMultiLine = FALSE,
+                         int32_t iLineWidth = -1);
+  void CalcTextRect(const CFX_WideString& wsText,
+                    IFWL_ThemeProvider* pTheme,
+                    FX_DWORD dwTTOStyles,
+                    int32_t iTTOAlign,
+                    CFX_RectF& rect);
+  void SetFocus(FX_BOOL bFocus);
+  void SetGrab(FX_BOOL bSet);
+  FX_BOOL GetPopupPos(FX_FLOAT fMinHeight,
+                      FX_FLOAT fMaxHeight,
+                      const CFX_RectF& rtAnchor,
+                      CFX_RectF& rtPopup);
+  FX_BOOL GetPopupPosMenu(FX_FLOAT fMinHeight,
+                          FX_FLOAT fMaxHeight,
+                          const CFX_RectF& rtAnchor,
+                          CFX_RectF& rtPopup);
+  FX_BOOL GetPopupPosComboBox(FX_FLOAT fMinHeight,
+                              FX_FLOAT fMaxHeight,
+                              const CFX_RectF& rtAnchor,
+                              CFX_RectF& rtPopup);
+  FX_BOOL GetPopupPosGeneral(FX_FLOAT fMinHeight,
+                             FX_FLOAT fMaxHeight,
+                             const CFX_RectF& rtAnchor,
+                             CFX_RectF& rtPopup);
+  FX_BOOL GetScreenSize(FX_FLOAT& fx, FX_FLOAT& fy);
+  void RegisterEventTarget(IFWL_Widget* pEventSource = NULL,
+                           FX_DWORD dwFilter = FWL_EVENT_ALL_MASK);
+  void UnregisterEventTarget();
+  void DispatchKeyEvent(CFWL_MsgKey* pNote);
+  void DispatchEvent(CFWL_Event* pEvent);
+  void Repaint(const CFX_RectF* pRect = NULL);
+  void DrawBackground(CFX_Graphics* pGraphics,
+                      int32_t iPartBk,
+                      IFWL_ThemeProvider* pTheme,
+                      const CFX_Matrix* pMatrix = NULL);
+  void DrawBorder(CFX_Graphics* pGraphics,
+                  int32_t iPartBorder,
+                  IFWL_ThemeProvider* pTheme,
+                  const CFX_Matrix* pMatrix = NULL);
+  void DrawEdge(CFX_Graphics* pGraphics,
+                int32_t iPartEdge,
+                IFWL_ThemeProvider* pTheme,
+                const CFX_Matrix* pMatrix = NULL);
+  void NotifyDriver();
+
+  FX_BOOL IsParent(IFWL_Widget* pParent);
+  CFWL_WidgetMgr* m_pWidgetMgr;
+  CFWL_NoteThreadImp* m_pOwnerThread;
+  CFWL_WidgetImpProperties* m_pProperties;
+  CFX_PrivateData* m_pPrivateData;
+  IFWL_WidgetDelegate* m_pDelegate;
+  IFWL_WidgetDelegate* m_pCurDelegate;
+  IFWL_Widget* m_pOuter;
+  IFWL_Widget* m_pInterface;
+  int32_t m_iLock;
+  friend class CFWL_WidgetImpDelegate;
+  friend void FWL_SetWidgetRect(IFWL_Widget* widget, const CFX_RectF& rect);
+  friend void FWL_SetWidgetStates(IFWL_Widget* widget, FX_DWORD dwStates);
+  friend void FWL_SetWidgetStyles(IFWL_Widget* widget, FX_DWORD dwStyles);
+};
+
+class CFWL_WidgetImpDelegate : public IFWL_WidgetDelegate {
+ public:
+  CFWL_WidgetImpDelegate();
+  ~CFWL_WidgetImpDelegate() override {}
+  int32_t OnProcessMessage(CFWL_Message* pMessage) override;
+  FWL_ERR OnProcessEvent(CFWL_Event* pEvent) override;
+  FWL_ERR OnDrawWidget(CFX_Graphics* pGraphics,
+                       const CFX_Matrix* pMatrix = NULL) override;
+};
+
+#endif  // XFA_FWL_CORE_FWL_WIDGETIMP_H_
diff --git a/xfa/fwl/core/fwl_widgetmgrimp.cpp b/xfa/fwl/core/fwl_widgetmgrimp.cpp
new file mode 100644
index 0000000000..ab507c221a
--- /dev/null
+++ b/xfa/fwl/core/fwl_widgetmgrimp.cpp
@@ -0,0 +1,1075 @@
+// 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 "xfa/fwl/core/fwl_widgetmgrimp.h"
+
+#include "xfa/fwl/core/fwl_appimp.h"
+#include "xfa/fwl/core/fwl_noteimp.h"
+#include "xfa/fwl/core/fwl_targetimp.h"
+#include "xfa/fwl/core/fwl_threadimp.h"
+#include "xfa/fwl/core/fwl_widgetimp.h"
+#include "xfa/include/fwl/adapter/fwl_adapternative.h"
+#include "xfa/include/fwl/adapter/fwl_adapterwidgetmgr.h"
+#include "xfa/include/fwl/core/fwl_app.h"
+#include "xfa/include/fwl/core/fwl_form.h"
+
+FX_BOOL FWL_UseOffscreen(IFWL_Widget* pWidget) {
+#if (_FX_OS_ == _FX_MACOSX_)
+  return FALSE;
+#else
+  return pWidget->GetStyles() & FWL_WGTSTYLE_Offscreen;
+#endif
+}
+IFWL_WidgetMgr* FWL_GetWidgetMgr() {
+  IFWL_App* pApp = FWL_GetApp();
+  if (!pApp)
+    return NULL;
+  return pApp->GetWidgetMgr();
+}
+CFWL_WidgetMgr::CFWL_WidgetMgr(IFWL_AdapterNative* pAdapterNative)
+    : m_dwCapability(0) {
+  m_pDelegate = new CFWL_WidgetMgrDelegate(this);
+  m_pAdapter = pAdapterNative->GetWidgetMgr(m_pDelegate);
+  FXSYS_assert(m_pAdapter);
+  CFWL_WidgetMgrItem* pRoot = new CFWL_WidgetMgrItem;
+  m_mapWidgetItem.SetAt(NULL, pRoot);
+#if (_FX_OS_ == _FX_WIN32_DESKTOP_) || (_FX_OS_ == _FX_WIN64_)
+  m_rtScreen.Reset();
+#endif
+}
+CFWL_WidgetMgr::~CFWL_WidgetMgr() {
+  FX_POSITION ps = m_mapWidgetItem.GetStartPosition();
+  while (ps) {
+    void* pWidget;
+    CFWL_WidgetMgrItem* pItem;
+    m_mapWidgetItem.GetNextAssoc(ps, pWidget, (void*&)pItem);
+    delete pItem;
+  }
+  m_mapWidgetItem.RemoveAll();
+  if (m_pDelegate) {
+    delete m_pDelegate;
+    m_pDelegate = NULL;
+  }
+}
+int32_t CFWL_WidgetMgr::CountWidgets(IFWL_Widget* pParent) {
+  CFWL_WidgetMgrItem* pParentItem = GetWidgetMgrItem(pParent);
+  return TravelWidgetMgr(pParentItem, NULL, NULL);
+}
+IFWL_Widget* CFWL_WidgetMgr::GetWidget(int32_t nIndex, IFWL_Widget* pParent) {
+  CFWL_WidgetMgrItem* pParentItem = GetWidgetMgrItem(pParent);
+  IFWL_Widget* pWidget = NULL;
+  TravelWidgetMgr(pParentItem, &nIndex, NULL, &pWidget);
+  return pWidget;
+}
+IFWL_Widget* CFWL_WidgetMgr::GetWidget(IFWL_Widget* pWidget,
+                                       FWL_WGTRELATION eRelation) {
+  CFWL_WidgetMgrItem* pItem = GetWidgetMgrItem(pWidget);
+  if (!pItem) {
+    return NULL;
+  }
+  IFWL_Widget* pRet = NULL;
+  switch (eRelation) {
+    case FWL_WGTRELATION_Parent: {
+      pRet = pItem->pParent ? pItem->pParent->pWidget : NULL;
+      break;
+    }
+    case FWL_WGTRELATION_Owner: {
+      pRet = pItem->pOwner ? pItem->pOwner->pWidget : NULL;
+      break;
+    }
+    case FWL_WGTRELATION_FirstSibling: {
+      pItem = pItem->pPrevious;
+      while (pItem && pItem->pPrevious) {
+        pItem = pItem->pPrevious;
+      }
+      pRet = pItem ? pItem->pWidget : NULL;
+      break;
+    }
+    case FWL_WGTRELATION_PriorSibling: {
+      pRet = pItem->pPrevious ? pItem->pPrevious->pWidget : NULL;
+      break;
+    }
+    case FWL_WGTRELATION_NextSibling: {
+      pRet = pItem->pNext ? pItem->pNext->pWidget : NULL;
+      break;
+    }
+    case FWL_WGTRELATION_LastSibling: {
+      pItem = pItem->pNext;
+      while (pItem && pItem->pNext) {
+        pItem = pItem->pNext;
+      }
+      pRet = pItem ? pItem->pWidget : NULL;
+      break;
+    }
+    case FWL_WGTRELATION_FirstChild: {
+      pRet = pItem->pChild ? pItem->pChild->pWidget : NULL;
+      break;
+    }
+    case FWL_WGTRELATION_LastChild: {
+      pItem = pItem->pChild;
+      while (pItem && pItem->pNext) {
+        pItem = pItem->pNext;
+      }
+      pRet = pItem ? pItem->pWidget : NULL;
+      break;
+    }
+    case FWL_WGTRELATION_SystemForm: {
+      while (pItem) {
+        if (IsAbleNative(pItem->pWidget)) {
+          pRet = pItem->pWidget;
+          break;
+        }
+        pItem = pItem->pParent;
+      }
+      break;
+    }
+    default: {}
+  }
+  return pRet;
+}
+int32_t CFWL_WidgetMgr::GetWidgetIndex(IFWL_Widget* pWidget) {
+  CFWL_WidgetMgrItem* pItem = GetWidgetMgrItem(pWidget);
+  if (!pItem)
+    return -1;
+  return TravelWidgetMgr(pItem->pParent, NULL, pItem);
+}
+FX_BOOL CFWL_WidgetMgr::SetWidgetIndex(IFWL_Widget* pWidget, int32_t nIndex) {
+  CFWL_WidgetMgrItem* pItem = GetWidgetMgrItem(pWidget);
+  if (!pItem)
+    return FALSE;
+  if (!pItem->pParent)
+    return FALSE;
+  CFWL_WidgetMgrItem* pChild = pItem->pParent->pChild;
+  int32_t i = 0;
+  while (pChild) {
+    if (pChild == pItem) {
+      if (i == nIndex) {
+        return TRUE;
+      }
+      if (pChild->pPrevious) {
+        pChild->pPrevious->pNext = pChild->pNext;
+      }
+      if (pChild->pNext) {
+        pChild->pNext->pPrevious = pChild->pPrevious;
+      }
+      if (pItem->pParent->pChild == pItem) {
+        pItem->pParent->pChild = pItem->pNext;
+      }
+      pItem->pNext = NULL;
+      pItem->pPrevious = NULL;
+      break;
+    }
+    if (!pChild->pNext) {
+      break;
+    }
+    pChild = pChild->pNext;
+    ++i;
+  }
+  pChild = pItem->pParent->pChild;
+  if (pChild) {
+    if (nIndex < 0) {
+      while (pChild->pNext) {
+        pChild = pChild->pNext;
+      }
+      pChild->pNext = pItem;
+      pItem->pPrevious = pChild;
+      pItem->pNext = NULL;
+      return TRUE;
+    }
+    i = 0;
+    while (i < nIndex && pChild->pNext) {
+      pChild = pChild->pNext;
+      ++i;
+    }
+    if (!pChild->pNext) {
+      pChild->pNext = pItem;
+      pItem->pPrevious = pChild;
+      pItem->pNext = NULL;
+      return TRUE;
+    }
+    if (pChild->pPrevious) {
+      pItem->pPrevious = pChild->pPrevious;
+      pChild->pPrevious->pNext = pItem;
+    }
+    pChild->pPrevious = pItem;
+    pItem->pNext = pChild;
+    if (pItem->pParent->pChild == pChild) {
+      pItem->pParent->pChild = pItem;
+    }
+  } else {
+    pItem->pParent->pChild = pItem;
+    pItem->pPrevious = NULL;
+    pItem->pNext = NULL;
+  }
+  return TRUE;
+}
+FWL_ERR CFWL_WidgetMgr::RepaintWidget(IFWL_Widget* pWidget,
+                                      const CFX_RectF* pRect) {
+  if (!m_pAdapter)
+    return FWL_ERR_Indefinite;
+  IFWL_Widget* pNative = pWidget;
+  CFX_RectF rect(*pRect);
+  if (IsFormDisabled()) {
+    IFWL_Widget* pOuter = pWidget->GetOuter();
+    while (pOuter) {
+      CFX_RectF rtTemp;
+      pNative->GetWidgetRect(rtTemp);
+      rect.left += rtTemp.left;
+      rect.top += rtTemp.top;
+      pNative = pOuter;
+      pOuter = pOuter->GetOuter();
+    }
+  } else if (!IsAbleNative(pWidget)) {
+    pNative = GetWidget(pWidget, FWL_WGTRELATION_SystemForm);
+    if (!pNative)
+      return FWL_ERR_Indefinite;
+    pWidget->TransformTo(pNative, rect.left, rect.top);
+  }
+  AddRedrawCounts(pNative);
+  return m_pAdapter->RepaintWidget(pNative, &rect);
+}
+void CFWL_WidgetMgr::AddWidget(IFWL_Widget* pWidget) {
+  CFWL_WidgetMgrItem* pParentItem = GetWidgetMgrItem(NULL);
+  CFWL_WidgetMgrItem* pItem = GetWidgetMgrItem(pWidget);
+  if (!pItem) {
+    pItem = new CFWL_WidgetMgrItem;
+    pItem->pWidget = pWidget;
+    m_mapWidgetItem.SetAt(pWidget, pItem);
+  }
+  if (pItem->pParent && pItem->pParent != pParentItem) {
+    if (pItem->pPrevious) {
+      pItem->pPrevious->pNext = pItem->pNext;
+    }
+    if (pItem->pNext) {
+      pItem->pNext->pPrevious = pItem->pPrevious;
+    }
+    if (pItem->pParent->pChild == pItem) {
+      pItem->pParent->pChild = pItem->pNext;
+    }
+  }
+  pItem->pParent = pParentItem;
+  SetWidgetIndex(pWidget, -1);
+}
+void CFWL_WidgetMgr::InsertWidget(IFWL_Widget* pParent,
+                                  IFWL_Widget* pChild,
+                                  int32_t nIndex) {
+  CFWL_WidgetMgrItem* pParentItem = GetWidgetMgrItem(pParent);
+  if (!pParentItem) {
+    pParentItem = new CFWL_WidgetMgrItem;
+    pParentItem->pWidget = pParent;
+    m_mapWidgetItem.SetAt(pParent, pParentItem);
+    CFWL_WidgetMgrItem* pRoot = GetWidgetMgrItem(NULL);
+    pParentItem->pParent = pRoot;
+    SetWidgetIndex(pParent, -1);
+  }
+  CFWL_WidgetMgrItem* pItem = GetWidgetMgrItem(pChild);
+  if (!pItem) {
+    pItem = new CFWL_WidgetMgrItem;
+    pItem->pWidget = pChild;
+    m_mapWidgetItem.SetAt(pChild, pItem);
+  }
+  if (pItem->pParent && pItem->pParent != pParentItem) {
+    if (pItem->pPrevious) {
+      pItem->pPrevious->pNext = pItem->pNext;
+    }
+    if (pItem->pNext) {
+      pItem->pNext->pPrevious = pItem->pPrevious;
+    }
+    if (pItem->pParent->pChild == pItem) {
+      pItem->pParent->pChild = pItem->pNext;
+    }
+  }
+  pItem->pParent = pParentItem;
+  SetWidgetIndex(pChild, nIndex);
+}
+void CFWL_WidgetMgr::RemoveWidget(IFWL_Widget* pWidget) {
+  CFWL_WidgetMgrItem* pItem = GetWidgetMgrItem(pWidget);
+  if (!pItem) {
+    return;
+  }
+  if (pItem->pPrevious) {
+    pItem->pPrevious->pNext = pItem->pNext;
+  }
+  if (pItem->pNext) {
+    pItem->pNext->pPrevious = pItem->pPrevious;
+  }
+  if (pItem->pParent && pItem->pParent->pChild == pItem) {
+    pItem->pParent->pChild = pItem->pNext;
+  }
+  CFWL_WidgetMgrItem* pChild = pItem->pChild;
+  while (pChild) {
+    CFWL_WidgetMgrItem* pNext = pChild->pNext;
+    RemoveWidget(pChild->pWidget);
+    pChild = pNext;
+  }
+  m_mapWidgetItem.RemoveKey(pWidget);
+  delete pItem;
+}
+void CFWL_WidgetMgr::SetOwner(IFWL_Widget* pOwner, IFWL_Widget* pOwned) {
+  CFWL_WidgetMgrItem* pParentItem = GetWidgetMgrItem(pOwner);
+  if (!pParentItem) {
+    pParentItem = new CFWL_WidgetMgrItem;
+    pParentItem->pWidget = pOwner;
+    m_mapWidgetItem.SetAt(pOwner, pParentItem);
+    CFWL_WidgetMgrItem* pRoot = GetWidgetMgrItem(NULL);
+    pParentItem->pParent = pRoot;
+    SetWidgetIndex(pOwner, -1);
+  }
+  CFWL_WidgetMgrItem* pItem = GetWidgetMgrItem(pOwned);
+  if (!pItem) {
+    pItem = new CFWL_WidgetMgrItem;
+    pItem->pWidget = pOwned;
+    m_mapWidgetItem.SetAt(pOwned, pItem);
+  }
+  pItem->pOwner = pParentItem;
+}
+void CFWL_WidgetMgr::SetParent(IFWL_Widget* pParent, IFWL_Widget* pChild) {
+  CFWL_WidgetMgrItem* pParentItem = GetWidgetMgrItem(pParent);
+  CFWL_WidgetMgrItem* pItem = GetWidgetMgrItem(pChild);
+  if (!pItem)
+    return;
+  if (pItem->pParent && pItem->pParent != pParentItem) {
+    if (pItem->pPrevious) {
+      pItem->pPrevious->pNext = pItem->pNext;
+    }
+    if (pItem->pNext) {
+      pItem->pNext->pPrevious = pItem->pPrevious;
+    }
+    if (pItem->pParent->pChild == pItem) {
+      pItem->pParent->pChild = pItem->pNext;
+    }
+    pItem->pNext = NULL;
+    pItem->pPrevious = NULL;
+  }
+  pItem->pParent = pParentItem;
+  SetWidgetIndex(pChild, -1);
+  if (!m_pAdapter)
+    return;
+  m_pAdapter->SetParentWidget(pChild, pParent);
+}
+FX_BOOL CFWL_WidgetMgr::IsChild(IFWL_Widget* pChild, IFWL_Widget* pParent) {
+  IFWL_Widget* pTemp = pChild;
+  do {
+    if (pTemp == pParent) {
+      return TRUE;
+    }
+    pTemp = GetWidget(pTemp, FWL_WGTRELATION_Parent);
+  } while (pTemp);
+  return FALSE;
+}
+FWL_ERR CFWL_WidgetMgr::CreateWidget_Native(IFWL_Widget* pWidget) {
+  if (!IsAbleNative(pWidget)) {
+    return FWL_ERR_Succeeded;
+  }
+  return m_pAdapter->CreateWidget(pWidget, pWidget->GetOwner());
+}
+FWL_ERR CFWL_WidgetMgr::DestroyWidget_Native(IFWL_Widget* pWidget) {
+  if (!IsAbleNative(pWidget)) {
+    return FWL_ERR_Succeeded;
+  }
+  return m_pAdapter->DestroyWidget(pWidget);
+}
+FWL_ERR CFWL_WidgetMgr::GetWidgetRect_Native(IFWL_Widget* pWidget,
+                                             CFX_RectF& rect) {
+  if (!IsAbleNative(pWidget)) {
+    return FWL_ERR_Succeeded;
+  }
+  return m_pAdapter->GetWidgetRect(pWidget, rect);
+}
+FWL_ERR CFWL_WidgetMgr::SetWidgetRect_Native(IFWL_Widget* pWidget,
+                                             const CFX_RectF& rect) {
+  if (FWL_UseOffscreen(pWidget)) {
+    CFWL_WidgetMgrItem* pItem = GetWidgetMgrItem(pWidget);
+    pItem->iRedrawCounter++;
+    if (pItem->pOffscreen) {
+      CFX_RenderDevice* pDevice = pItem->pOffscreen->GetRenderDevice();
+      if (pDevice && pDevice->GetBitmap()) {
+        CFX_DIBitmap* pBitmap = pDevice->GetBitmap();
+        if (pBitmap->GetWidth() - rect.width > 1 ||
+            pBitmap->GetHeight() - rect.height > 1) {
+          delete pItem->pOffscreen;
+          pItem->pOffscreen = NULL;
+        }
+      }
+    }
+#if (_FX_OS_ == _FX_WIN32_DESKTOP_) || (_FX_OS_ == _FX_WIN64_)
+    pItem->bOutsideChanged = !m_rtScreen.Contains(rect);
+#endif
+  }
+  return m_pAdapter->SetWidgetRect(pWidget, rect);
+}
+FWL_ERR CFWL_WidgetMgr::SetWidgetPosition_Native(IFWL_Widget* pWidget,
+                                                 FX_FLOAT fx,
+                                                 FX_FLOAT fy) {
+  return m_pAdapter->SetWidgetPosition(pWidget, fx, fy);
+}
+FWL_ERR CFWL_WidgetMgr::SetWidgetIcon_Native(IFWL_Widget* pWidget,
+                                             const CFX_DIBitmap* pIcon,
+                                             FX_BOOL bBig) {
+  return m_pAdapter->SetWidgetIcon(pWidget, pIcon, bBig);
+}
+FWL_ERR CFWL_WidgetMgr::SetWidgetCaption_Native(
+    IFWL_Widget* pWidget,
+    const CFX_WideStringC& wsCaption) {
+  return m_pAdapter->SetWidgetCaption(pWidget, wsCaption);
+}
+FWL_ERR CFWL_WidgetMgr::SetBorderRegion_Native(IFWL_Widget* pWidget,
+                                               CFX_Path* pPath) {
+  return m_pAdapter->SetBorderRegion(pWidget, pPath);
+}
+FWL_ERR CFWL_WidgetMgr::ShowWidget_Native(IFWL_Widget* pWidget) {
+  return m_pAdapter->ShowWidget(pWidget);
+}
+FWL_ERR CFWL_WidgetMgr::HideWidget_Native(IFWL_Widget* pWidget) {
+  return m_pAdapter->HideWidget(pWidget);
+}
+FWL_ERR CFWL_WidgetMgr::SetNormal_Native(IFWL_Widget* pWidget) {
+  return m_pAdapter->SetNormal(pWidget);
+}
+FWL_ERR CFWL_WidgetMgr::SetMaximize_Native(IFWL_Widget* pWidget) {
+  return m_pAdapter->SetMaximize(pWidget);
+}
+FWL_ERR CFWL_WidgetMgr::SetMinimize_Native(IFWL_Widget* pWidget) {
+  return m_pAdapter->SetMinimize(pWidget);
+}
+FX_BOOL CFWL_WidgetMgr::CheckMessage_Native() {
+  return m_pAdapter->CheckMessage();
+}
+FWL_ERR CFWL_WidgetMgr::DispatchMessage_Native() {
+  return m_pAdapter->DispatchMessage();
+}
+FX_BOOL CFWL_WidgetMgr::IsIdleMessage_Native() {
+  return m_pAdapter->IsIdleMessage();
+}
+FWL_ERR CFWL_WidgetMgr::Exit_Native(int32_t iExitCode) {
+  return m_pAdapter->Exit(iExitCode);
+}
+FWL_ERR CFWL_WidgetMgr::CreateWidgetWithNativeId_Native(IFWL_Widget* pWidget,
+                                                        void* vp) {
+  return m_pAdapter->CreateWidgetWithNativeId(pWidget, vp);
+}
+IFWL_Widget* CFWL_WidgetMgr::GetWidgetAtPoint(IFWL_Widget* parent,
+                                              FX_FLOAT x,
+                                              FX_FLOAT y) {
+  if (!parent)
+    return NULL;
+  FX_FLOAT x1;
+  FX_FLOAT y1;
+  IFWL_Widget* child = GetWidget(parent, FWL_WGTRELATION_LastChild);
+  while (child) {
+    if ((child->GetStates() & FWL_WGTSTATE_Invisible) == 0) {
+      x1 = x;
+      y1 = y;
+      CFX_Matrix matrixOnParent;
+      child->GetMatrix(matrixOnParent);
+      CFX_Matrix m;
+      m.SetIdentity();
+      m.SetReverse(matrixOnParent);
+      m.TransformPoint(x1, y1);
+      CFX_RectF bounds;
+      child->GetWidgetRect(bounds);
+      if (bounds.Contains(x1, y1)) {
+        x1 -= bounds.left;
+        y1 -= bounds.top;
+        return GetWidgetAtPoint(child, x1, y1);
+      }
+    }
+    child = GetWidget(child, FWL_WGTRELATION_PriorSibling);
+  }
+  return parent;
+}
+void CFWL_WidgetMgr::NotifySizeChanged(IFWL_Widget* pForm,
+                                       FX_FLOAT fx,
+                                       FX_FLOAT fy) {
+  if (!FWL_UseOffscreen(pForm)) {
+    return;
+  }
+  CFWL_WidgetMgrItem* pItem = GetWidgetMgrItem(pForm);
+  if (pItem->pOffscreen) {
+    delete pItem->pOffscreen;
+    pItem->pOffscreen = NULL;
+  }
+}
+IFWL_Widget* CFWL_WidgetMgr::nextTab(IFWL_Widget* parent,
+                                     IFWL_Widget* focus,
+                                     FX_BOOL& bFind) {
+  IFWL_Widget* child =
+      FWL_GetWidgetMgr()->GetWidget(parent, FWL_WGTRELATION_FirstChild);
+  while (child) {
+    if (focus == child) {
+      bFind = TRUE;
+    }
+    if ((child->GetStyles() & FWL_WGTSTYLE_TabStop) &&
+        (!focus || (focus != child && bFind))) {
+      return child;
+    }
+    IFWL_Widget* bRet = nextTab(child, focus, bFind);
+    if (bRet) {
+      return bRet;
+    }
+    child = FWL_GetWidgetMgr()->GetWidget(child, FWL_WGTRELATION_NextSibling);
+  }
+  return NULL;
+}
+int32_t CFWL_WidgetMgr::CountRadioButtonGroup(IFWL_Widget* pFirst) {
+  int32_t iRet = 0;
+  IFWL_Widget* pChild = pFirst;
+  while (pChild) {
+    if ((pChild->GetStyles() & FWL_WGTSTYLE_Group) &&
+        pChild->GetClassID() == 3811304691) {
+      iRet++;
+    }
+    pChild = GetWidget(pChild, FWL_WGTRELATION_NextSibling);
+  }
+  return iRet;
+}
+IFWL_Widget* CFWL_WidgetMgr::GetSiblingRadioButton(IFWL_Widget* pWidget,
+                                                   FX_BOOL bNext) {
+  while ((pWidget = GetWidget(pWidget, bNext ? FWL_WGTRELATION_NextSibling
+                                             : FWL_WGTRELATION_PriorSibling)) !=
+         NULL) {
+    if (pWidget->GetClassID() == 3811304691) {
+      return pWidget;
+    }
+  }
+  return NULL;
+}
+IFWL_Widget* CFWL_WidgetMgr::GetRadioButtonGroupHeader(
+    IFWL_Widget* pRadioButton) {
+  if (pRadioButton->GetStyles() & FWL_WGTSTYLE_Group) {
+    return pRadioButton;
+  }
+  IFWL_Widget* pNext = pRadioButton;
+  while ((pNext = GetSiblingRadioButton(pNext, FALSE)) != NULL) {
+    if (pNext->GetStyles() & FWL_WGTSTYLE_Group) {
+      return pNext;
+    }
+  }
+  pNext = GetWidget(pRadioButton, FWL_WGTRELATION_LastSibling);
+  if ((pNext->GetStyles() & FWL_WGTSTYLE_Group) &&
+      pNext->GetClassID() == 3811304691) {
+    return pNext;
+  }
+  while ((pNext = GetSiblingRadioButton(pNext, FALSE)) && pNext &&
+         pNext != pRadioButton) {
+    if (pNext->GetStyles() & FWL_WGTSTYLE_Group) {
+      return pNext;
+    }
+  }
+  pNext = GetWidget(pRadioButton, FWL_WGTRELATION_FirstSibling);
+  if (pNext && (pNext->GetStyles() == FWL_WGTSTYLE_Group) &&
+      pNext->GetClassID() == 3811304691) {
+    return pNext;
+  }
+  return GetSiblingRadioButton(pNext, TRUE);
+}
+void CFWL_WidgetMgr::GetSameGroupRadioButton(IFWL_Widget* pRadioButton,
+                                             CFX_PtrArray& group) {
+  IFWL_Widget* pFirst = GetWidget(pRadioButton, FWL_WGTRELATION_FirstSibling);
+  if (!pFirst) {
+    pFirst = pRadioButton;
+  }
+  int32_t iGroup = CountRadioButtonGroup(pFirst);
+  if (iGroup < 2) {
+    if (pFirst->GetClassID() == 3811304691) {
+      group.Add(pFirst);
+    }
+    IFWL_Widget* pNext = pFirst;
+    while ((pNext = GetSiblingRadioButton(pNext, TRUE)) != NULL) {
+      group.Add(pNext);
+    }
+    return;
+  }
+  IFWL_Widget* pNext = GetRadioButtonGroupHeader(pRadioButton);
+  do {
+    group.Add(pNext);
+    pNext = GetSiblingRadioButton(pNext, TRUE);
+    if (!pNext) {
+      if (pFirst->GetClassID() == 3811304691) {
+        pNext = pFirst;
+      } else {
+        pNext = GetSiblingRadioButton(pFirst, TRUE);
+      }
+    }
+  } while (pNext && ((pNext->GetStyles() & FWL_WGTSTYLE_Group) == 0));
+}
+IFWL_Widget* CFWL_WidgetMgr::GetDefaultButton(IFWL_Widget* pParent) {
+  if ((pParent->GetClassID() == 3521614244) &&
+      (pParent->GetStates() & (1 << (FWL_WGTSTATE_MAX + 2)))) {
+    return pParent;
+  }
+  IFWL_Widget* child =
+      FWL_GetWidgetMgr()->GetWidget(pParent, FWL_WGTRELATION_FirstChild);
+  while (child) {
+    if ((child->GetClassID() == 3521614244) &&
+        (child->GetStates() & (1 << (FWL_WGTSTATE_MAX + 2)))) {
+      return child;
+    }
+    IFWL_Widget* find = GetDefaultButton(child);
+    if (find) {
+      return find;
+    }
+    child = FWL_GetWidgetMgr()->GetWidget(child, FWL_WGTRELATION_NextSibling);
+  }
+  return NULL;
+}
+void CFWL_WidgetMgr::AddRedrawCounts(IFWL_Widget* pWidget) {
+  CFWL_WidgetMgrItem* pItem = GetWidgetMgrItem(pWidget);
+  (pItem->iRedrawCounter)++;
+}
+void CFWL_WidgetMgr::ResetRedrawCounts(IFWL_Widget* pWidget) {
+  CFWL_WidgetMgrItem* pItem = GetWidgetMgrItem(pWidget);
+  pItem->iRedrawCounter = 0;
+}
+CFWL_WidgetMgrItem* CFWL_WidgetMgr::GetWidgetMgrItem(IFWL_Widget* pWidget) {
+  return static_cast<CFWL_WidgetMgrItem*>(m_mapWidgetItem.GetValueAt(pWidget));
+}
+int32_t CFWL_WidgetMgr::TravelWidgetMgr(CFWL_WidgetMgrItem* pParent,
+                                        int32_t* pIndex,
+                                        CFWL_WidgetMgrItem* pItem,
+                                        IFWL_Widget** pWidget) {
+  if (!pParent) {
+    return 0;
+  }
+  int32_t iCount = 0;
+  CFWL_WidgetMgrItem* pChild = pParent->pChild;
+  while (pChild) {
+    iCount++;
+    if (pIndex) {
+      if (*pIndex == 0) {
+        *pWidget = pChild->pWidget;
+        return iCount;
+      }
+      pIndex--;
+    }
+    if (pItem && pItem == pChild) {
+      return iCount - 1;
+    }
+    pChild = pChild->pNext;
+  }
+  if (pIndex) {
+    return 0;
+  } else if (pItem) {
+    return -1;
+  }
+  return iCount - 1;
+}
+FX_BOOL CFWL_WidgetMgr::IsAbleNative(IFWL_Widget* pWidget) {
+  if (!pWidget)
+    return FALSE;
+  if (!pWidget->IsInstance(FX_WSTRC(FWL_CLASS_Form))) {
+    return FALSE;
+  }
+  FX_DWORD dwStyles = pWidget->GetStyles();
+  return ((dwStyles & FWL_WGTSTYLE_WindowTypeMask) ==
+          FWL_WGTSTYLE_OverLapper) ||
+         (dwStyles & FWL_WGTSTYLE_Popup);
+}
+FX_BOOL CFWL_WidgetMgr::IsThreadEnabled() {
+  return !(m_dwCapability & FWL_WGTMGR_DisableThread);
+}
+FX_BOOL CFWL_WidgetMgr::IsFormDisabled() {
+  return m_dwCapability & FWL_WGTMGR_DisableForm;
+}
+FX_BOOL CFWL_WidgetMgr::GetAdapterPopupPos(IFWL_Widget* pWidget,
+                                           FX_FLOAT fMinHeight,
+                                           FX_FLOAT fMaxHeight,
+                                           const CFX_RectF& rtAnchor,
+                                           CFX_RectF& rtPopup) {
+  IFWL_AdapterWidgetMgr* pSDApapter = GetAdapterWidgetMgr();
+  return pSDApapter->GetPopupPos(pWidget, fMinHeight, fMaxHeight, rtAnchor,
+                                 rtPopup);
+}
+CFWL_WidgetMgrDelegate::CFWL_WidgetMgrDelegate(CFWL_WidgetMgr* pWidgetMgr)
+    : m_pWidgetMgr(pWidgetMgr) {}
+FWL_ERR CFWL_WidgetMgrDelegate::OnSetCapability(FX_DWORD dwCapability) {
+  m_pWidgetMgr->m_dwCapability = dwCapability;
+  return FWL_ERR_Succeeded;
+}
+int32_t CFWL_WidgetMgrDelegate::OnProcessMessageToForm(CFWL_Message* pMessage) {
+  if (!pMessage)
+    return 0;
+  if (!pMessage->m_pDstTarget)
+    return 0;
+  IFWL_Widget* pDstWidget = pMessage->m_pDstTarget;
+  IFWL_NoteThread* pNoteThread = pDstWidget->GetOwnerThread();
+  if (!pNoteThread)
+    return 0;
+  CFWL_NoteDriver* pNoteDriver =
+      static_cast<CFWL_NoteDriver*>(pNoteThread->GetNoteDriver());
+  if (!pNoteDriver)
+    return 0;
+  if (m_pWidgetMgr->IsThreadEnabled()) {
+    pMessage = static_cast<CFWL_Message*>(pMessage->Clone());
+  }
+  if (m_pWidgetMgr->IsFormDisabled()) {
+    pNoteDriver->ProcessMessage(pMessage);
+  } else {
+    pNoteDriver->QueueMessage(pMessage);
+  }
+#if (_FX_OS_ == _FX_MACOSX_)
+  CFWL_NoteLoop* pTopLoop = pNoteDriver->GetTopLoop();
+  if (pTopLoop) {
+    pNoteDriver->UnqueueMessage(pTopLoop);
+  }
+#endif
+  if (m_pWidgetMgr->IsThreadEnabled()) {
+    pMessage->Release();
+  }
+  return FWL_ERR_Succeeded;
+}
+FWL_ERR CFWL_WidgetMgrDelegate::OnDrawWidget(IFWL_Widget* pWidget,
+                                             CFX_Graphics* pGraphics,
+                                             const CFX_Matrix* pMatrix) {
+  if (!pWidget)
+    return FWL_ERR_Indefinite;
+  if (!pGraphics)
+    return FWL_ERR_Indefinite;
+  CFX_Graphics* pTemp = DrawWidgetBefore(pWidget, pGraphics, pMatrix);
+  CFX_RectF clipCopy;
+  pWidget->GetWidgetRect(clipCopy);
+  clipCopy.left = clipCopy.top = 0;
+  if (bUseOffscreenDirect(pWidget)) {
+    DrawWidgetAfter(pWidget, pGraphics, clipCopy, pMatrix);
+    return FWL_ERR_Succeeded;
+  }
+  CFX_RectF clipBounds;
+#if (_FX_OS_ == _FX_WIN32_DESKTOP_) || (_FX_OS_ == _FX_WIN64_) || \
+    (_FX_OS_ == _FX_LINUX_DESKTOP_) || (_FX_OS_ == _FX_ANDROID_)
+  IFWL_WidgetDelegate* pDelegate = pWidget->SetDelegate(NULL);
+  pDelegate->OnDrawWidget(pTemp, pMatrix);
+  pGraphics->GetClipRect(clipBounds);
+  clipCopy = clipBounds;
+#elif(_FX_OS_ == _FX_MACOSX_)
+  if (m_pWidgetMgr->IsFormDisabled()) {
+    IFWL_WidgetDelegate* pDelegate = pWidget->SetDelegate(NULL);
+    pDelegate->OnDrawWidget(pTemp, pMatrix);
+    pGraphics->GetClipRect(clipBounds);
+    clipCopy = clipBounds;
+  } else {
+    clipBounds.Set(pMatrix->a, pMatrix->b, pMatrix->c, pMatrix->d);
+    const_cast<CFX_Matrix*>(pMatrix)->SetIdentity();  // FIXME: const cast.
+#ifdef FWL_UseMacSystemBorder
+#else
+#endif
+    {
+      IFWL_WidgetDelegate* pDelegate = pWidget->SetDelegate(NULL);
+      pDelegate->OnDrawWidget(pTemp, pMatrix);
+    }
+  }
+#endif
+  if (!m_pWidgetMgr->IsFormDisabled()) {
+    CFX_RectF rtClient;
+    pWidget->GetClientRect(rtClient);
+    clipBounds.Intersect(rtClient);
+  }
+  if (!clipBounds.IsEmpty()) {
+    DrawChild(pWidget, clipBounds, pTemp, pMatrix);
+  }
+  DrawWidgetAfter(pWidget, pGraphics, clipCopy, pMatrix);
+  m_pWidgetMgr->ResetRedrawCounts(pWidget);
+  return FWL_ERR_Succeeded;
+}
+void CFWL_WidgetMgrDelegate::DrawChild(IFWL_Widget* parent,
+                                       const CFX_RectF& rtClip,
+                                       CFX_Graphics* pGraphics,
+                                       const CFX_Matrix* pMatrix) {
+  if (!parent)
+    return;
+  FX_BOOL bFormDisable = m_pWidgetMgr->IsFormDisabled();
+  IFWL_Widget* pNextChild =
+      m_pWidgetMgr->GetWidget(parent, FWL_WGTRELATION_FirstChild);
+  while (pNextChild) {
+    IFWL_Widget* child = pNextChild;
+    pNextChild = m_pWidgetMgr->GetWidget(child, FWL_WGTRELATION_NextSibling);
+    if (child->GetStates() & FWL_WGTSTATE_Invisible) {
+      continue;
+    }
+    CFX_RectF rtWidget;
+    child->GetWidgetRect(rtWidget);
+    if (rtWidget.IsEmpty()) {
+      continue;
+    }
+    CFX_Matrix widgetMatrix;
+    CFX_RectF clipBounds(rtWidget);
+    if (!bFormDisable) {
+      child->GetMatrix(widgetMatrix, TRUE);
+    }
+    if (pMatrix) {
+      widgetMatrix.Concat(*pMatrix);
+    }
+    if (!bFormDisable) {
+      widgetMatrix.TransformPoint(clipBounds.left, clipBounds.top);
+      clipBounds.Intersect(rtClip);
+      if (clipBounds.IsEmpty()) {
+        continue;
+      }
+      pGraphics->SaveGraphState();
+      pGraphics->SetClipRect(clipBounds);
+    }
+    widgetMatrix.Translate(rtWidget.left, rtWidget.top, TRUE);
+    IFWL_WidgetDelegate* pDelegate = child->SetDelegate(NULL);
+    if (pDelegate) {
+      if (m_pWidgetMgr->IsFormDisabled() ||
+          IsNeedRepaint(child, &widgetMatrix, rtClip)) {
+        pDelegate->OnDrawWidget(pGraphics, &widgetMatrix);
+      }
+    }
+    if (!bFormDisable) {
+      pGraphics->RestoreGraphState();
+    }
+    DrawChild(child, clipBounds, pGraphics,
+              bFormDisable ? &widgetMatrix : pMatrix);
+    child = m_pWidgetMgr->GetWidget(child, FWL_WGTRELATION_NextSibling);
+  }
+}
+CFX_Graphics* CFWL_WidgetMgrDelegate::DrawWidgetBefore(
+    IFWL_Widget* pWidget,
+    CFX_Graphics* pGraphics,
+    const CFX_Matrix* pMatrix) {
+  if (!FWL_UseOffscreen(pWidget)) {
+    return pGraphics;
+  }
+  CFWL_WidgetMgrItem* pItem = m_pWidgetMgr->GetWidgetMgrItem(pWidget);
+  if (!pItem->pOffscreen) {
+    pItem->pOffscreen = new CFX_Graphics;
+    CFX_RectF rect;
+    pWidget->GetWidgetRect(rect);
+    pItem->pOffscreen->Create((int32_t)rect.width, (int32_t)rect.height,
+                              FXDIB_Argb);
+  }
+  CFX_RectF rect;
+  pGraphics->GetClipRect(rect);
+  pItem->pOffscreen->SetClipRect(rect);
+  return pItem->pOffscreen;
+}
+void CFWL_WidgetMgrDelegate::DrawWidgetAfter(IFWL_Widget* pWidget,
+                                             CFX_Graphics* pGraphics,
+                                             CFX_RectF& rtClip,
+                                             const CFX_Matrix* pMatrix) {
+  if (FWL_UseOffscreen(pWidget)) {
+    CFWL_WidgetMgrItem* pItem = m_pWidgetMgr->GetWidgetMgrItem(pWidget);
+    pGraphics->Transfer(pItem->pOffscreen, rtClip.left, rtClip.top, rtClip,
+                        pMatrix);
+#ifdef _WIN32
+    pItem->pOffscreen->ClearClip();
+#endif
+  }
+  CFWL_WidgetMgrItem* pItem = m_pWidgetMgr->GetWidgetMgrItem(pWidget);
+  pItem->iRedrawCounter = 0;
+}
+
+#define FWL_NEEDREPAINTHIT_Point 12
+#define FWL_NEEDREPAINTHIT_Piece 3
+struct FWL_NEEDREPAINTHITDATA {
+  CFX_PointF hitPoint;
+  FX_BOOL bNotNeedRepaint;
+  FX_BOOL bNotContainByDirty;
+};
+
+FX_BOOL CFWL_WidgetMgrDelegate::IsNeedRepaint(IFWL_Widget* pWidget,
+                                              CFX_Matrix* pMatrix,
+                                              const CFX_RectF& rtDirty) {
+  CFWL_WidgetMgrItem* pItem = m_pWidgetMgr->GetWidgetMgrItem(pWidget);
+  if (pItem && pItem->iRedrawCounter > 0) {
+    pItem->iRedrawCounter = 0;
+    return TRUE;
+  }
+  CFX_RectF rtWidget;
+  pWidget->GetWidgetRect(rtWidget);
+  rtWidget.left = rtWidget.top = 0;
+  pMatrix->TransformRect(rtWidget);
+  if (!rtWidget.IntersectWith(rtDirty)) {
+    return FALSE;
+  }
+  IFWL_Widget* pChild =
+      FWL_GetWidgetMgr()->GetWidget(pWidget, FWL_WGTRELATION_FirstChild);
+  if (!pChild) {
+    return TRUE;
+  }
+  if (pChild->GetClassID() == 3150298670) {
+    CFX_RectF rtTemp;
+    pChild->GetWidgetRect(rtTemp);
+    if (rtTemp.width >= rtWidget.width && rtTemp.height >= rtWidget.height) {
+      pChild =
+          FWL_GetWidgetMgr()->GetWidget(pChild, FWL_WGTRELATION_FirstChild);
+      if (!pChild) {
+        return TRUE;
+      }
+    }
+  }
+  CFX_RectF rtChilds;
+  rtChilds.Empty();
+  FX_BOOL bChildIntersectWithDirty = FALSE;
+  FX_BOOL bOrginPtIntersectWidthChild = FALSE;
+  FX_BOOL bOrginPtIntersectWidthDirty =
+      rtDirty.Contains(rtWidget.left, rtWidget.top);
+  static FWL_NEEDREPAINTHITDATA hitPoint[FWL_NEEDREPAINTHIT_Point];
+  int32_t iSize = sizeof(FWL_NEEDREPAINTHITDATA);
+  FXSYS_memset(hitPoint, 0, iSize);
+  FX_FLOAT fxPiece = rtWidget.width / FWL_NEEDREPAINTHIT_Piece;
+  FX_FLOAT fyPiece = rtWidget.height / FWL_NEEDREPAINTHIT_Piece;
+  hitPoint[2].hitPoint.x = hitPoint[6].hitPoint.x = rtWidget.left;
+  hitPoint[0].hitPoint.x = hitPoint[3].hitPoint.x = hitPoint[7].hitPoint.x =
+      hitPoint[10].hitPoint.x = fxPiece + rtWidget.left;
+  hitPoint[1].hitPoint.x = hitPoint[4].hitPoint.x = hitPoint[8].hitPoint.x =
+      hitPoint[11].hitPoint.x = fxPiece * 2 + rtWidget.left;
+  hitPoint[5].hitPoint.x = hitPoint[9].hitPoint.x =
+      rtWidget.width + rtWidget.left;
+  hitPoint[0].hitPoint.y = hitPoint[1].hitPoint.y = rtWidget.top;
+  hitPoint[2].hitPoint.y = hitPoint[3].hitPoint.y = hitPoint[4].hitPoint.y =
+      hitPoint[5].hitPoint.y = fyPiece + rtWidget.top;
+  hitPoint[6].hitPoint.y = hitPoint[7].hitPoint.y = hitPoint[8].hitPoint.y =
+      hitPoint[9].hitPoint.y = fyPiece * 2 + rtWidget.top;
+  hitPoint[10].hitPoint.y = hitPoint[11].hitPoint.y =
+      rtWidget.height + rtWidget.top;
+  do {
+    CFX_RectF rect;
+    pChild->GetWidgetRect(rect);
+    CFX_RectF r = rect;
+    r.left += rtWidget.left;
+    r.top += rtWidget.top;
+    if (r.IsEmpty()) {
+      continue;
+    }
+    if (r.Contains(rtDirty)) {
+      return FALSE;
+    }
+    if (!bChildIntersectWithDirty && r.IntersectWith(rtDirty)) {
+      bChildIntersectWithDirty = TRUE;
+    }
+    if (bOrginPtIntersectWidthDirty && !bOrginPtIntersectWidthChild) {
+      bOrginPtIntersectWidthChild = rect.Contains(0, 0);
+    }
+    if (rtChilds.IsEmpty()) {
+      rtChilds = rect;
+    } else if (!(pChild->GetStates() & FWL_WGTSTATE_Invisible)) {
+      rtChilds.Union(rect);
+    }
+    for (int32_t i = 0; i < FWL_NEEDREPAINTHIT_Point; i++) {
+      if (hitPoint[i].bNotContainByDirty || hitPoint[i].bNotNeedRepaint) {
+        continue;
+      }
+      if (!rtDirty.Contains(hitPoint[i].hitPoint)) {
+        hitPoint[i].bNotContainByDirty = TRUE;
+        continue;
+      }
+      if (r.Contains(hitPoint[i].hitPoint)) {
+        hitPoint[i].bNotNeedRepaint = TRUE;
+      }
+    }
+  } while ((pChild = FWL_GetWidgetMgr()->GetWidget(
+                pChild, FWL_WGTRELATION_NextSibling)) != NULL);
+  if (!bChildIntersectWithDirty) {
+    return TRUE;
+  }
+  if (bOrginPtIntersectWidthDirty && !bOrginPtIntersectWidthChild) {
+    return TRUE;
+  }
+  if (rtChilds.IsEmpty()) {
+    return TRUE;
+  }
+  int32_t repaintPoint = FWL_NEEDREPAINTHIT_Point;
+  for (int32_t i = 0; i < FWL_NEEDREPAINTHIT_Point; i++) {
+    if (hitPoint[i].bNotNeedRepaint) {
+      repaintPoint--;
+    }
+  }
+  if (repaintPoint > 0) {
+    return TRUE;
+  }
+  pMatrix->TransformRect(rtChilds);
+  if (rtChilds.Contains(rtDirty) || rtChilds.Contains(rtWidget)) {
+    return FALSE;
+  }
+  return TRUE;
+}
+FX_BOOL CFWL_WidgetMgrDelegate::bUseOffscreenDirect(IFWL_Widget* pWidget) {
+  CFWL_WidgetMgrItem* pItem = m_pWidgetMgr->GetWidgetMgrItem(pWidget);
+  if (!FWL_UseOffscreen(pWidget) || !(pItem->pOffscreen)) {
+    return FALSE;
+  }
+#if (_FX_OS_ == _FX_WIN32_DESKTOP_) || (_FX_OS_ == _FX_WIN64_)
+  if (pItem->bOutsideChanged) {
+    CFX_RectF r;
+    pWidget->GetWidgetRect(r);
+    CFX_RectF temp(m_pWidgetMgr->m_rtScreen);
+    temp.Deflate(50, 50);
+    if (!temp.Contains(r)) {
+      return FALSE;
+    }
+    pItem->bOutsideChanged = FALSE;
+  }
+#endif
+  return pItem->iRedrawCounter == 0;
+}
+static void FWL_WriteBMP(CFX_DIBitmap* pBitmap, const FX_CHAR* filename) {
+  FILE* file = fopen(filename, "wb");
+  if (file == NULL) {
+    return;
+  }
+  int size = 14 + 40 + pBitmap->GetPitch() * pBitmap->GetHeight();
+  unsigned char buffer[40];
+  buffer[0] = 'B';
+  buffer[1] = 'M';
+  buffer[2] = (unsigned char)size;
+  buffer[3] = (unsigned char)(size >> 8);
+  buffer[4] = (unsigned char)(size >> 16);
+  buffer[5] = (unsigned char)(size >> 24);
+  buffer[6] = buffer[7] = buffer[8] = buffer[9] = 0;
+  buffer[10] = 54;
+  buffer[11] = buffer[12] = buffer[13] = 0;
+  fwrite(buffer, 14, 1, file);
+  memset(buffer, 0, 40);
+  buffer[0] = 40;
+  buffer[4] = (unsigned char)pBitmap->GetWidth();
+  buffer[5] = (unsigned char)(pBitmap->GetWidth() >> 8);
+  buffer[6] = (unsigned char)(pBitmap->GetWidth() >> 16);
+  buffer[7] = (unsigned char)(pBitmap->GetWidth() >> 24);
+  buffer[8] = (unsigned char)(-pBitmap->GetHeight());
+  buffer[9] = (unsigned char)((-pBitmap->GetHeight()) >> 8);
+  buffer[10] = (unsigned char)((-pBitmap->GetHeight()) >> 16);
+  buffer[11] = (unsigned char)((-pBitmap->GetHeight()) >> 24);
+  buffer[12] = 1;
+  buffer[14] = pBitmap->GetBPP();
+  fwrite(buffer, 40, 1, file);
+  for (int row = 0; row < pBitmap->GetHeight(); row++) {
+    uint8_t* scan_line = pBitmap->GetBuffer() + row * pBitmap->GetPitch();
+    fwrite(scan_line, pBitmap->GetPitch(), 1, file);
+  }
+  fclose(file);
+}
+FWL_ERR FWL_WidgetMgrSnapshot(IFWL_Widget* pWidget,
+                              const CFX_WideString* saveFile,
+                              const CFX_Matrix* pMatrix) {
+  CFX_RectF r;
+  pWidget->GetWidgetRect(r);
+  CFX_Graphics gs;
+  gs.Create((int32_t)r.width, (int32_t)r.height, FXDIB_Argb);
+  CFWL_WidgetMgr* widgetMgr = static_cast<CFWL_WidgetMgr*>(FWL_GetWidgetMgr());
+  CFWL_WidgetMgrDelegate* delegate = widgetMgr->GetDelegate();
+  delegate->OnDrawWidget(pWidget, &gs, pMatrix);
+  CFX_DIBitmap* dib = gs.GetRenderDevice()->GetBitmap();
+  FWL_WriteBMP(dib, saveFile->UTF8Encode());
+  return FWL_ERR_Succeeded;
+}
+FX_BOOL FWL_WidgetIsChild(IFWL_Widget* parent, IFWL_Widget* find) {
+  if (!find) {
+    return FALSE;
+  }
+  IFWL_Widget* child =
+      FWL_GetWidgetMgr()->GetWidget(parent, FWL_WGTRELATION_FirstChild);
+  while (child) {
+    if (child == find) {
+      return TRUE;
+    }
+    if (FWL_WidgetIsChild(child, find)) {
+      return TRUE;
+    }
+    child = FWL_GetWidgetMgr()->GetWidget(child, FWL_WGTRELATION_NextSibling);
+  }
+  return FALSE;
+}
diff --git a/xfa/fwl/core/fwl_widgetmgrimp.h b/xfa/fwl/core/fwl_widgetmgrimp.h
new file mode 100644
index 0000000000..c29045d055
--- /dev/null
+++ b/xfa/fwl/core/fwl_widgetmgrimp.h
@@ -0,0 +1,170 @@
+// Copyright 2014 PDFium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
+
+#ifndef XFA_FWL_CORE_FWL_WIDGETMGRIMP_H_
+#define XFA_FWL_CORE_FWL_WIDGETMGRIMP_H_
+
+#include "xfa/include/fwl/core/fwl_widgetmgr.h"
+
+class IFWL_Widget;
+class IFWL_AdapterWidgetMgr;
+class CFWL_WidgetMgrDelegate;
+class IFWL_AdapterNative;
+
+class CFWL_WidgetMgrItem {
+ public:
+  CFWL_WidgetMgrItem()
+      : pParent(NULL),
+        pOwner(NULL),
+        pChild(NULL),
+        pPrevious(NULL),
+        pNext(NULL),
+        pWidget(NULL),
+        pOffscreen(NULL),
+        iRedrawCounter(0)
+#if (_FX_OS_ == _FX_WIN32_DESKTOP_) || (_FX_OS_ == _FX_WIN64_)
+        ,
+        bOutsideChanged(FALSE)
+#endif
+  {
+  }
+  ~CFWL_WidgetMgrItem() {
+    if (pOffscreen) {
+      delete pOffscreen;
+      pOffscreen = NULL;
+    }
+  }
+  CFWL_WidgetMgrItem* pParent;
+  CFWL_WidgetMgrItem* pOwner;
+  CFWL_WidgetMgrItem* pChild;
+  CFWL_WidgetMgrItem* pPrevious;
+  CFWL_WidgetMgrItem* pNext;
+  IFWL_Widget* pWidget;
+  CFX_Graphics* pOffscreen;
+  int32_t iRedrawCounter;
+#if (_FX_OS_ == _FX_WIN32_DESKTOP_) || (_FX_OS_ == _FX_WIN64_)
+  FX_BOOL bOutsideChanged;
+#endif
+};
+
+class CFWL_WidgetMgr : public IFWL_WidgetMgr {
+ public:
+  CFWL_WidgetMgr(IFWL_AdapterNative* pAdapterNative);
+  ~CFWL_WidgetMgr() override;
+
+  // IFWL_WidgetMgr:
+  int32_t CountWidgets(IFWL_Widget* pParent = NULL) override;
+  IFWL_Widget* GetWidget(int32_t nIndex, IFWL_Widget* pParent = NULL) override;
+  IFWL_Widget* GetWidget(IFWL_Widget* pWidget,
+                         FWL_WGTRELATION eRelation) override;
+  int32_t GetWidgetIndex(IFWL_Widget* pWidget) override;
+  FX_BOOL SetWidgetIndex(IFWL_Widget* pWidget, int32_t nIndex) override;
+  FWL_ERR RepaintWidget(IFWL_Widget* pWidget,
+                        const CFX_RectF* pRect = NULL) override;
+  FX_DWORD GetCapability() override { return m_dwCapability; }
+
+  void AddWidget(IFWL_Widget* pWidget);
+  void InsertWidget(IFWL_Widget* pParent,
+                    IFWL_Widget* pChild,
+                    int32_t nIndex = -1);
+  void RemoveWidget(IFWL_Widget* pWidget);
+  void SetOwner(IFWL_Widget* pOwner, IFWL_Widget* pOwned);
+  void SetParent(IFWL_Widget* pParent, IFWL_Widget* pChild);
+  FX_BOOL IsChild(IFWL_Widget* pChild, IFWL_Widget* pParent);
+  FWL_ERR CreateWidget_Native(IFWL_Widget* pWidget);
+  FWL_ERR DestroyWidget_Native(IFWL_Widget* pWidget);
+  FWL_ERR GetWidgetRect_Native(IFWL_Widget* pWidget, CFX_RectF& rect);
+  FWL_ERR SetWidgetRect_Native(IFWL_Widget* pWidget, const CFX_RectF& rect);
+  FWL_ERR SetWidgetPosition_Native(IFWL_Widget* pWidget,
+                                   FX_FLOAT fx,
+                                   FX_FLOAT fy);
+  FWL_ERR SetWidgetIcon_Native(IFWL_Widget* pWidget,
+                               const CFX_DIBitmap* pIcon,
+                               FX_BOOL bBig);
+  FWL_ERR SetWidgetCaption_Native(IFWL_Widget* pWidget,
+                                  const CFX_WideStringC& wsCaption);
+  FWL_ERR SetBorderRegion_Native(IFWL_Widget* pWidget, CFX_Path* pPath);
+  FWL_ERR ShowWidget_Native(IFWL_Widget* pWidget);
+  FWL_ERR HideWidget_Native(IFWL_Widget* pWidget);
+  FWL_ERR SetNormal_Native(IFWL_Widget* pWidget);
+  FWL_ERR SetMaximize_Native(IFWL_Widget* pWidget);
+  FWL_ERR SetMinimize_Native(IFWL_Widget* pWidget);
+  FX_BOOL CheckMessage_Native();
+  FWL_ERR DispatchMessage_Native();
+  FX_BOOL IsIdleMessage_Native();
+  FWL_ERR Exit_Native(int32_t iExitCode);
+  FWL_ERR CreateWidgetWithNativeId_Native(IFWL_Widget* pWidget, void* vp);
+  IFWL_Widget* GetWidgetAtPoint(IFWL_Widget* pParent, FX_FLOAT fx, FX_FLOAT fy);
+  void NotifySizeChanged(IFWL_Widget* pForm, FX_FLOAT fx, FX_FLOAT fy);
+  IFWL_Widget* nextTab(IFWL_Widget* parent, IFWL_Widget* focus, FX_BOOL& bFind);
+  int32_t CountRadioButtonGroup(IFWL_Widget* pFirst);
+  IFWL_Widget* GetSiblingRadioButton(IFWL_Widget* pWidget, FX_BOOL bNext);
+  IFWL_Widget* GetRadioButtonGroupHeader(IFWL_Widget* pRadioButton);
+  void GetSameGroupRadioButton(IFWL_Widget* pRadioButton, CFX_PtrArray& group);
+  IFWL_Widget* GetDefaultButton(IFWL_Widget* pParent);
+  void AddRedrawCounts(IFWL_Widget* pWidget);
+  void ResetRedrawCounts(IFWL_Widget* pWidget);
+  IFWL_AdapterWidgetMgr* GetAdapterWidgetMgr() { return m_pAdapter; }
+  CFWL_WidgetMgrDelegate* GetDelegate() { return m_pDelegate; }
+  CFWL_WidgetMgrItem* GetWidgetMgrItem(IFWL_Widget* pWidget);
+  FX_BOOL IsThreadEnabled();
+  FX_BOOL IsFormDisabled();
+  FX_BOOL GetAdapterPopupPos(IFWL_Widget* pWidget,
+                             FX_FLOAT fMinHeight,
+                             FX_FLOAT fMaxHeight,
+                             const CFX_RectF& rtAnchor,
+                             CFX_RectF& rtPopup);
+
+ protected:
+  int32_t TravelWidgetMgr(CFWL_WidgetMgrItem* pParent,
+                          int32_t* pIndex,
+                          CFWL_WidgetMgrItem* pItem,
+                          IFWL_Widget** pWidget = NULL);
+  FX_BOOL IsAbleNative(IFWL_Widget* pWidget);
+  CFX_MapPtrToPtr m_mapWidgetItem;
+  IFWL_AdapterWidgetMgr* m_pAdapter;
+  CFWL_WidgetMgrDelegate* m_pDelegate;
+  friend class CFWL_WidgetMgrDelegate;
+  FX_DWORD m_dwCapability;
+#if (_FX_OS_ == _FX_WIN32_DESKTOP_) || (_FX_OS_ == _FX_WIN64_)
+  CFX_RectF m_rtScreen;
+#endif
+};
+
+class CFWL_WidgetMgrDelegate : public IFWL_WidgetMgrDelegate {
+ public:
+  CFWL_WidgetMgrDelegate(CFWL_WidgetMgr* pWidgetMgr);
+  ~CFWL_WidgetMgrDelegate() override {}
+
+  // IFWL_WidgetMgrDelegate:
+  FWL_ERR OnSetCapability(
+      FX_DWORD dwCapability = FWL_WGTMGR_DisableThread) override;
+  int32_t OnProcessMessageToForm(CFWL_Message* pMessage) override;
+  FWL_ERR OnDrawWidget(IFWL_Widget* pWidget,
+                       CFX_Graphics* pGraphics,
+                       const CFX_Matrix* pMatrix) override;
+
+ protected:
+  void DrawChild(IFWL_Widget* pParent,
+                 const CFX_RectF& rtClip,
+                 CFX_Graphics* pGraphics,
+                 const CFX_Matrix* pMatrix);
+  CFX_Graphics* DrawWidgetBefore(IFWL_Widget* pWidget,
+                                 CFX_Graphics* pGraphics,
+                                 const CFX_Matrix* pMatrix);
+  void DrawWidgetAfter(IFWL_Widget* pWidget,
+                       CFX_Graphics* pGraphics,
+                       CFX_RectF& rtClip,
+                       const CFX_Matrix* pMatrix);
+  FX_BOOL IsNeedRepaint(IFWL_Widget* pWidget,
+                        CFX_Matrix* pMatrix,
+                        const CFX_RectF& rtDirty);
+  FX_BOOL bUseOffscreenDirect(IFWL_Widget* pWidget);
+
+  CFWL_WidgetMgr* m_pWidgetMgr;
+};
+
+#endif  // XFA_FWL_CORE_FWL_WIDGETMGRIMP_H_