Remove the GetCaption dataprovider methodchromium/2928

This method mostly returns L"". In the one case where it returns
something different the value is substituted into the callsite.

The IFWL_Tooltip class was using the caption, but it is not currently
being used. Removed as well.

Review-Url: https://codereview.chromium.org/2522663002

25 files changed, 8 insertions, 422 deletions

diff --git a/BUILD.gn b/BUILD.gn
index 3542d457d9..dff610528e 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -1313,8 +1313,6 @@ if (pdf_enable_xfa) {
       "xfa/fwl/core/ifwl_timer.h",
       "xfa/fwl/core/ifwl_timerinfo.cpp",
       "xfa/fwl/core/ifwl_timerinfo.h",
-      "xfa/fwl/core/ifwl_tooltip.cpp",
-      "xfa/fwl/core/ifwl_tooltip.h",
       "xfa/fwl/core/ifwl_widget.cpp",
       "xfa/fwl/core/ifwl_widget.h",
       "xfa/fwl/core/ifwl_widgetdelegate.h",
diff --git a/xfa/fwl/core/cfwl_barcode.cpp b/xfa/fwl/core/cfwl_barcode.cpp
index ef3ae4036d..00bf82957a 100644
--- a/xfa/fwl/core/cfwl_barcode.cpp
+++ b/xfa/fwl/core/cfwl_barcode.cpp
@@ -102,9 +102,6 @@ bool CFWL_Barcode::IsProtectedType() {
   return GetWidget() ? ToBarcode(GetWidget())->IsProtectedType() : false;
 }
 
-void CFWL_Barcode::GetCaption(IFWL_Widget* pWidget, CFX_WideString& wsCaption) {
-}
-
 BC_CHAR_ENCODING CFWL_Barcode::GetCharEncoding() const {
   return m_eCharEncoding;
 }
diff --git a/xfa/fwl/core/cfwl_barcode.h b/xfa/fwl/core/cfwl_barcode.h
index 2a4622f9fb..0f52a048b1 100644
--- a/xfa/fwl/core/cfwl_barcode.h
+++ b/xfa/fwl/core/cfwl_barcode.h
@@ -18,9 +18,6 @@ class CFWL_Barcode : public CFWL_Edit, public IFWL_Barcode::DataProvider {
 
   void Initialize();
 
-  // IFWL_Widget::DataProvider
-  void GetCaption(IFWL_Widget* pWidget, CFX_WideString& wsCaption) override;
-
   // IFWL_Barcode::DataProvider
   BC_CHAR_ENCODING GetCharEncoding() const override;
   int32_t GetModuleHeight() const override;
diff --git a/xfa/fwl/core/cfwl_checkbox.cpp b/xfa/fwl/core/cfwl_checkbox.cpp
index 97f963b327..8117dfe631 100644
--- a/xfa/fwl/core/cfwl_checkbox.cpp
+++ b/xfa/fwl/core/cfwl_checkbox.cpp
@@ -29,11 +29,6 @@ void CFWL_CheckBox::SetBoxSize(FX_FLOAT fHeight) {
   m_fBoxHeight = fHeight;
 }
 
-void CFWL_CheckBox::GetCaption(IFWL_Widget* pWidget,
-                               CFX_WideString& wsCaption) {
-  wsCaption = L"Check box";
-}
-
 FX_FLOAT CFWL_CheckBox::GetBoxSize(IFWL_Widget* pWidget) {
   return m_fBoxHeight;
 }
diff --git a/xfa/fwl/core/cfwl_checkbox.h b/xfa/fwl/core/cfwl_checkbox.h
index 4d39a94726..099fe31d28 100644
--- a/xfa/fwl/core/cfwl_checkbox.h
+++ b/xfa/fwl/core/cfwl_checkbox.h
@@ -17,9 +17,6 @@ class CFWL_CheckBox : public CFWL_Widget, public IFWL_CheckBox::DataProvider {
 
   void Initialize();
 
-  // IFWL_Widget::DataProvider
-  void GetCaption(IFWL_Widget* pWidget, CFX_WideString& wsCaption) override;
-
   // IFWL_CheckBox::DataProvider
   FX_FLOAT GetBoxSize(IFWL_Widget* pWidget) override;
 
diff --git a/xfa/fwl/core/cfwl_combobox.cpp b/xfa/fwl/core/cfwl_combobox.cpp
index f38140821b..c1e8a3df67 100644
--- a/xfa/fwl/core/cfwl_combobox.cpp
+++ b/xfa/fwl/core/cfwl_combobox.cpp
@@ -156,9 +156,6 @@ void CFWL_ComboBox::EditModifyStylesEx(uint32_t dwStylesExAdded,
   }
 }
 
-void CFWL_ComboBox::GetCaption(IFWL_Widget* pWidget,
-                               CFX_WideString& wsCaption) {}
-
 int32_t CFWL_ComboBox::CountItems(const IFWL_Widget* pWidget) const {
   return m_ItemArray.size();
 }
diff --git a/xfa/fwl/core/cfwl_combobox.h b/xfa/fwl/core/cfwl_combobox.h
index 67d723718d..45d571f987 100644
--- a/xfa/fwl/core/cfwl_combobox.h
+++ b/xfa/fwl/core/cfwl_combobox.h
@@ -20,9 +20,6 @@ class CFWL_ComboBox : public CFWL_Widget, public IFWL_ComboBox::DataProvider {
 
   void Initialize();
 
-  // IFWL_Widget::DataProvider
-  void GetCaption(IFWL_Widget* pWidget, CFX_WideString& wsCaption) override;
-
   // IFWL_ListBox::DataProvider
   int32_t CountItems(const IFWL_Widget* pWidget) const override;
   CFWL_ListItem* GetItem(const IFWL_Widget* pWidget,
diff --git a/xfa/fwl/core/cfwl_datetimepicker.cpp b/xfa/fwl/core/cfwl_datetimepicker.cpp
index 809392d949..abb85468cf 100644
--- a/xfa/fwl/core/cfwl_datetimepicker.cpp
+++ b/xfa/fwl/core/cfwl_datetimepicker.cpp
@@ -57,11 +57,6 @@ void CFWL_DateTimePicker::SetCurSel(int32_t iYear,
   ToDateTimePicker(GetWidget())->SetCurSel(iYear, iMonth, iDay);
 }
 
-void CFWL_DateTimePicker::GetCaption(IFWL_Widget* pWidget,
-                                     CFX_WideString& wsCaption) {
-  wsCaption = L"";
-}
-
 void CFWL_DateTimePicker::GetToday(IFWL_Widget* pWidget,
                                    int32_t& iYear,
                                    int32_t& iMonth,
diff --git a/xfa/fwl/core/cfwl_datetimepicker.h b/xfa/fwl/core/cfwl_datetimepicker.h
index 68cc421147..8cdc7c10ce 100644
--- a/xfa/fwl/core/cfwl_datetimepicker.h
+++ b/xfa/fwl/core/cfwl_datetimepicker.h
@@ -18,9 +18,6 @@ class CFWL_DateTimePicker : public CFWL_Widget,
 
   void Initialize();
 
-  // IFWL_Widget::DataProvider
-  void GetCaption(IFWL_Widget* pWidget, CFX_WideString& wsCaption) override;
-
   // IFWL_DateTimePicker::DataProvider
   void GetToday(IFWL_Widget* pWidget,
                 int32_t& iYear,
diff --git a/xfa/fwl/core/cfwl_listbox.cpp b/xfa/fwl/core/cfwl_listbox.cpp
index faedf5bef7..4c933bf24e 100644
--- a/xfa/fwl/core/cfwl_listbox.cpp
+++ b/xfa/fwl/core/cfwl_listbox.cpp
@@ -99,10 +99,6 @@ uint32_t CFWL_ListBox::GetItemStates(CFWL_ListItem* pItem) {
   return pItem->m_dwStates | pItem->m_dwCheckState;
 }
 
-void CFWL_ListBox::GetCaption(IFWL_Widget* pWidget, CFX_WideString& wsCaption) {
-  wsCaption = L"";
-}
-
 int32_t CFWL_ListBox::CountItems(const IFWL_Widget* pWidget) const {
   return pdfium::CollectionSize<int32_t>(m_ItemArray);
 }
diff --git a/xfa/fwl/core/cfwl_listbox.h b/xfa/fwl/core/cfwl_listbox.h
index 44b580ced2..ec033825bb 100644
--- a/xfa/fwl/core/cfwl_listbox.h
+++ b/xfa/fwl/core/cfwl_listbox.h
@@ -22,9 +22,6 @@ class CFWL_ListBox : public CFWL_Widget, public IFWL_ListBox::DataProvider {
 
   void Initialize();
 
-  // IFWL_Widget::DataProvider:
-  void GetCaption(IFWL_Widget* pWidget, CFX_WideString& wsCaption) override;
-
   // IFWL_ListBox::DataProvider:
   int32_t CountItems(const IFWL_Widget* pWidget) const override;
   CFWL_ListItem* GetItem(const IFWL_Widget* pWidget,
diff --git a/xfa/fwl/core/cfwl_notedriver.cpp b/xfa/fwl/core/cfwl_notedriver.cpp
index 2041c619e7..051619bee2 100644
--- a/xfa/fwl/core/cfwl_notedriver.cpp
+++ b/xfa/fwl/core/cfwl_notedriver.cpp
@@ -20,7 +20,7 @@
 #include "xfa/fwl/core/cfwl_noteloop.h"
 #include "xfa/fwl/core/cfwl_widgetmgr.h"
 #include "xfa/fwl/core/ifwl_app.h"
-#include "xfa/fwl/core/ifwl_tooltip.h"
+#include "xfa/fwl/core/ifwl_form.h"
 
 CFWL_NoteDriver::CFWL_NoteDriver()
     : m_pHover(nullptr),
diff --git a/xfa/fwl/core/cfwl_notedriver.h b/xfa/fwl/core/cfwl_notedriver.h
index 9e5fa99f6a..ee9b384e7a 100644
--- a/xfa/fwl/core/cfwl_notedriver.h
+++ b/xfa/fwl/core/cfwl_notedriver.h
@@ -12,14 +12,12 @@
 #include <unordered_map>
 
 #include "xfa/fwl/core/cfwl_event.h"
-#include "xfa/fwl/core/ifwl_tooltip.h"
 #include "xfa/fwl/core/ifwl_widget.h"
 #include "xfa/fxgraphics/cfx_graphics.h"
 
 class CFWL_EventTarget;
 class CFWL_NoteLoop;
 class CFWL_TargetImp;
-class IFWL_ToolTip;
 class IFWL_Widget;
 
 class CFWL_NoteDriver {
diff --git a/xfa/fwl/core/cfwl_picturebox.cpp b/xfa/fwl/core/cfwl_picturebox.cpp
index 4b8bf70d07..3298307a59 100644
--- a/xfa/fwl/core/cfwl_picturebox.cpp
+++ b/xfa/fwl/core/cfwl_picturebox.cpp
@@ -23,5 +23,3 @@ void CFWL_PictureBox::Initialize() {
   CFWL_Widget::Initialize();
 }
 
-void CFWL_PictureBox::GetCaption(IFWL_Widget* pWidget,
-                                 CFX_WideString& wsCaption) {}
diff --git a/xfa/fwl/core/cfwl_picturebox.h b/xfa/fwl/core/cfwl_picturebox.h
index d1be78bda4..ce61a34519 100644
--- a/xfa/fwl/core/cfwl_picturebox.h
+++ b/xfa/fwl/core/cfwl_picturebox.h
@@ -17,9 +17,6 @@ class CFWL_PictureBox : public CFWL_Widget, public IFWL_Widget::DataProvider {
   ~CFWL_PictureBox() override;
 
   void Initialize();
-
-  // IFWL_Widget::DataProvider
-  void GetCaption(IFWL_Widget* pWidget, CFX_WideString& wsCaption) override;
 };
 
 #endif  // XFA_FWL_CORE_CFWL_PICTUREBOX_H_
diff --git a/xfa/fwl/core/cfwl_pushbutton.cpp b/xfa/fwl/core/cfwl_pushbutton.cpp
index 90c8ab4941..3d98498ea8 100644
--- a/xfa/fwl/core/cfwl_pushbutton.cpp
+++ b/xfa/fwl/core/cfwl_pushbutton.cpp
@@ -23,7 +23,3 @@ void CFWL_PushButton::Initialize() {
   CFWL_Widget::Initialize();
 }
 
-void CFWL_PushButton::GetCaption(IFWL_Widget* pWidget,
-                                 CFX_WideString& wsCaption) {
-  wsCaption = L"";
-}
diff --git a/xfa/fwl/core/cfwl_pushbutton.h b/xfa/fwl/core/cfwl_pushbutton.h
index b35ed65474..2d7fa9f075 100644
--- a/xfa/fwl/core/cfwl_pushbutton.h
+++ b/xfa/fwl/core/cfwl_pushbutton.h
@@ -17,9 +17,6 @@ class CFWL_PushButton : public CFWL_Widget, public IFWL_Widget::DataProvider {
   ~CFWL_PushButton() override;
 
   void Initialize();
-
-  // IFWL_Widget::DataProvider
-  void GetCaption(IFWL_Widget* pWidget, CFX_WideString& wsCaption) override;
 };
 
 #endif  // XFA_FWL_CORE_CFWL_PUSHBUTTON_H_
diff --git a/xfa/fwl/core/ifwl_checkbox.cpp b/xfa/fwl/core/ifwl_checkbox.cpp
index 04f367f772..4af7cc78fa 100644
--- a/xfa/fwl/core/ifwl_checkbox.cpp
+++ b/xfa/fwl/core/ifwl_checkbox.cpp
@@ -60,14 +60,10 @@ void IFWL_CheckBox::GetWidgetRect(CFX_RectF& rect, bool bAutoSize) {
   if (!m_pProperties->m_pDataProvider)
     return;
 
-  CFX_WideString wsCaption;
-  m_pProperties->m_pDataProvider->GetCaption(this, wsCaption);
-  if (wsCaption.GetLength() > 0) {
-    CFX_SizeF sz = CalcTextSize(
-        wsCaption, m_pProperties->m_pThemeProvider,
-        !!(m_pProperties->m_dwStyleExes & FWL_STYLEEXT_CKB_MultiLine));
-    rect.Set(0, 0, sz.x, sz.y);
-  }
+  CFX_SizeF sz = CalcTextSize(
+      L"Check box", m_pProperties->m_pThemeProvider,
+      !!(m_pProperties->m_dwStyleExes & FWL_STYLEEXT_CKB_MultiLine));
+  rect.Set(0, 0, sz.x, sz.y);
   rect.Inflate(kCaptionMargin, kCaptionMargin);
 
   IFWL_CheckBox::DataProvider* pData =
@@ -124,11 +120,6 @@ void IFWL_CheckBox::DrawWidget(CFX_Graphics* pGraphics,
   if (!m_pProperties->m_pDataProvider)
     return;
 
-  CFX_WideString wsCaption;
-  m_pProperties->m_pDataProvider->GetCaption(this, wsCaption);
-  if (wsCaption.GetLength() <= 0)
-    return;
-
   CFWL_ThemeText textParam;
   textParam.m_pWidget = this;
   textParam.m_iPart = CFWL_Part::Caption;
@@ -137,7 +128,7 @@ void IFWL_CheckBox::DrawWidget(CFX_Graphics* pGraphics,
   if (pMatrix)
     textParam.m_matrix.Concat(*pMatrix);
   textParam.m_rtPart = m_rtCaption;
-  textParam.m_wsText = wsCaption;
+  textParam.m_wsText = L"Check box";
   textParam.m_dwTTOStyles = m_dwTTOStyles;
   textParam.m_iTTOAlign = m_iTTOAlign;
   pTheme->DrawText(&textParam);
@@ -211,14 +202,7 @@ void IFWL_CheckBox::Layout() {
   rtFocus.Set(m_rtCaption.left, m_rtCaption.top, m_rtCaption.width,
               m_rtCaption.height);
 
-  CFX_WideString wsCaption;
-  m_pProperties->m_pDataProvider->GetCaption(this, wsCaption);
-  if (wsCaption.IsEmpty()) {
-    m_rtFocus.Set(0, 0, 0, 0);
-    return;
-  }
-
-  CalcTextRect(wsCaption, m_pProperties->m_pThemeProvider, m_dwTTOStyles,
+  CalcTextRect(L"Check box", m_pProperties->m_pThemeProvider, m_dwTTOStyles,
                m_iTTOAlign, rtFocus);
   if ((m_pProperties->m_dwStyleExes & FWL_STYLEEXT_CKB_MultiLine) == 0) {
     FX_FLOAT fWidth = std::max(m_rtCaption.width, rtFocus.width);
diff --git a/xfa/fwl/core/ifwl_datetimepicker.cpp b/xfa/fwl/core/ifwl_datetimepicker.cpp
index b0e0114bce..85acbc4d7d 100644
--- a/xfa/fwl/core/ifwl_datetimepicker.cpp
+++ b/xfa/fwl/core/ifwl_datetimepicker.cpp
@@ -675,9 +675,6 @@ void IFWL_DateTimePicker::DisForm_OnFocusChanged(CFWL_Message* pMsg,
   Repaint(&rtInvalidate);
 }
 
-void IFWL_DateTimePicker::GetCaption(IFWL_Widget* pWidget,
-                                     CFX_WideString& wsCaption) {}
-
 int32_t IFWL_DateTimePicker::GetCurDay(IFWL_Widget* pWidget) {
   return m_iCurDay;
 }
diff --git a/xfa/fwl/core/ifwl_datetimepicker.h b/xfa/fwl/core/ifwl_datetimepicker.h
index 21f5f4a28e..67c1c33d7b 100644
--- a/xfa/fwl/core/ifwl_datetimepicker.h
+++ b/xfa/fwl/core/ifwl_datetimepicker.h
@@ -63,9 +63,6 @@ class IFWL_DateTimePicker : public IFWL_Widget,
   void OnDrawWidget(CFX_Graphics* pGraphics,
                     const CFX_Matrix* pMatrix) override;
 
-  // IFWL_Widget::DataProvider
-  void GetCaption(IFWL_Widget* pWidget, CFX_WideString& wsCaption) override;
-
   // IFWL_MonthCalendar::DataProvider
   int32_t GetCurDay(IFWL_Widget* pWidget) override;
   int32_t GetCurMonth(IFWL_Widget* pWidget) override;
diff --git a/xfa/fwl/core/ifwl_pushbutton.cpp b/xfa/fwl/core/ifwl_pushbutton.cpp
index 8ee0485b11..9589de1c3c 100644
--- a/xfa/fwl/core/ifwl_pushbutton.cpp
+++ b/xfa/fwl/core/ifwl_pushbutton.cpp
@@ -47,16 +47,6 @@ void IFWL_PushButton::GetWidgetRect(CFX_RectF& rect, bool bAutoSize) {
   if (!m_pProperties->m_pThemeProvider)
     m_pProperties->m_pThemeProvider = GetAvailableTheme();
 
-  CFX_WideString wsCaption;
-  if (m_pProperties->m_pDataProvider)
-    m_pProperties->m_pDataProvider->GetCaption(this, wsCaption);
-
-  int32_t iLen = wsCaption.GetLength();
-  if (iLen > 0) {
-    CFX_SizeF sz = CalcTextSize(wsCaption, m_pProperties->m_pThemeProvider);
-    rect.Set(0, 0, sz.x, sz.y);
-  }
-
   FX_FLOAT* fcaption =
       static_cast<FX_FLOAT*>(GetThemeCapacity(CFWL_WidgetCapacity::Margin));
   rect.Inflate(*fcaption, *fcaption);
@@ -92,7 +82,6 @@ void IFWL_PushButton::DrawWidget(CFX_Graphics* pGraphics,
   if (!m_pProperties->m_pThemeProvider)
     return;
 
-  IFWL_ThemeProvider* pTheme = m_pProperties->m_pThemeProvider;
   if (HasBorder()) {
     DrawBorder(pGraphics, CFWL_Part::Border, m_pProperties->m_pThemeProvider,
                pMatrix);
@@ -102,26 +91,6 @@ void IFWL_PushButton::DrawWidget(CFX_Graphics* pGraphics,
              pMatrix);
   }
   DrawBkground(pGraphics, m_pProperties->m_pThemeProvider, pMatrix);
-  CFX_Matrix matrix;
-  matrix.Concat(*pMatrix);
-
-  CFX_WideString wsCaption;
-  if (m_pProperties->m_pDataProvider)
-    m_pProperties->m_pDataProvider->GetCaption(this, wsCaption);
-
-  CFX_RectF rtText;
-  rtText.Set(0, 0, 0, 0);
-  if (!wsCaption.IsEmpty())
-    CalcTextRect(wsCaption, pTheme, 0, m_iTTOAlign, rtText);
-
-  switch (m_pProperties->m_dwStyleExes & FWL_STYLEEXT_PSB_ModeMask) {
-    case FWL_STYLEEXT_PSB_TextOnly:
-      DrawText(pGraphics, m_pProperties->m_pThemeProvider, &matrix);
-      break;
-    case FWL_STYLEEXT_PSB_IconOnly:
-    case FWL_STYLEEXT_PSB_TextIcon:
-      break;
-  }
 }
 
 void IFWL_PushButton::DrawBkground(CFX_Graphics* pGraphics,
@@ -140,31 +109,6 @@ void IFWL_PushButton::DrawBkground(CFX_Graphics* pGraphics,
   pTheme->DrawBackground(&param);
 }
 
-void IFWL_PushButton::DrawText(CFX_Graphics* pGraphics,
-                               IFWL_ThemeProvider* pTheme,
-                               const CFX_Matrix* pMatrix) {
-  if (!m_pProperties->m_pDataProvider)
-    return;
-
-  CFX_WideString wsCaption;
-  m_pProperties->m_pDataProvider->GetCaption(this, wsCaption);
-  if (wsCaption.IsEmpty())
-    return;
-
-  CFWL_ThemeText param;
-  param.m_pWidget = this;
-  param.m_iPart = CFWL_Part::Caption;
-  param.m_dwStates = GetPartStates();
-  param.m_pGraphics = pGraphics;
-  if (pMatrix)
-    param.m_matrix.Concat(*pMatrix);
-  param.m_rtPart = m_rtCaption;
-  param.m_wsText = wsCaption;
-  param.m_dwTTOStyles = m_dwTTOStyles;
-  param.m_iTTOAlign = m_iTTOAlign;
-  pTheme->DrawText(&param);
-}
-
 uint32_t IFWL_PushButton::GetPartStates() {
   uint32_t dwStates = CFWL_PartState_Normal;
   if (m_pProperties->m_dwStates & FWL_WGTSTATE_Focused)
diff --git a/xfa/fwl/core/ifwl_pushbutton.h b/xfa/fwl/core/ifwl_pushbutton.h
index a3fa8da1a8..c2c337df55 100644
--- a/xfa/fwl/core/ifwl_pushbutton.h
+++ b/xfa/fwl/core/ifwl_pushbutton.h
@@ -53,9 +53,6 @@ class IFWL_PushButton : public IFWL_Widget {
   void DrawBkground(CFX_Graphics* pGraphics,
                     IFWL_ThemeProvider* pTheme,
                     const CFX_Matrix* pMatrix);
-  void DrawText(CFX_Graphics* pGraphics,
-                IFWL_ThemeProvider* pTheme,
-                const CFX_Matrix* pMatrix);
   uint32_t GetPartStates();
   void UpdateTextOutStyles();
   void OnFocusChanged(CFWL_Message* pMsg, bool bSet);
diff --git a/xfa/fwl/core/ifwl_tooltip.cpp b/xfa/fwl/core/ifwl_tooltip.cpp
deleted file mode 100644
index 770527de02..0000000000
--- a/xfa/fwl/core/ifwl_tooltip.cpp
+++ /dev/null
@@ -1,206 +0,0 @@
-// 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/ifwl_tooltip.h"
-
-#include <memory>
-#include <utility>
-
-#include "third_party/base/ptr_util.h"
-#include "xfa/fde/tto/fde_textout.h"
-#include "xfa/fwl/core/cfwl_notedriver.h"
-#include "xfa/fwl/core/cfwl_themebackground.h"
-#include "xfa/fwl/core/cfwl_themepart.h"
-#include "xfa/fwl/core/cfwl_themetext.h"
-#include "xfa/fwl/core/ifwl_themeprovider.h"
-#include "xfa/fwl/core/ifwl_timerinfo.h"
-#include "xfa/fwl/theme/cfwl_widgettp.h"
-
-IFWL_ToolTip::IFWL_ToolTip(const IFWL_App* app,
-                           std::unique_ptr<CFWL_WidgetProperties> properties,
-                           IFWL_Widget* pOuter)
-    : IFWL_Form(app, std::move(properties), pOuter),
-      m_dwTTOStyles(FDE_TTOSTYLE_SingleLine),
-      m_iTTOAlign(FDE_TTOALIGNMENT_Center),
-      m_pTimerInfoShow(nullptr),
-      m_pTimerInfoHide(nullptr),
-      m_TimerShow(this),
-      m_TimerHide(this) {
-  m_rtClient.Set(0, 0, 0, 0);
-  m_rtCaption.Set(0, 0, 0, 0);
-  m_rtAnchor.Set(0, 0, 0, 0);
-  m_pProperties->m_dwStyles &= ~FWL_WGTSTYLE_Child;
-  m_pProperties->m_dwStyles |= FWL_WGTSTYLE_Popup;
-}
-
-IFWL_ToolTip::~IFWL_ToolTip() {}
-
-FWL_Type IFWL_ToolTip::GetClassID() const {
-  return FWL_Type::ToolTip;
-}
-
-void IFWL_ToolTip::GetWidgetRect(CFX_RectF& rect, bool bAutoSize) {
-  if (!bAutoSize) {
-    rect = m_pProperties->m_rtWidget;
-    return;
-  }
-
-  rect.Set(0, 0, 0, 0);
-  if (!m_pProperties->m_pThemeProvider)
-    m_pProperties->m_pThemeProvider = GetAvailableTheme();
-
-  CFX_WideString wsCaption;
-  if (m_pProperties->m_pDataProvider)
-    m_pProperties->m_pDataProvider->GetCaption(this, wsCaption);
-
-  int32_t iLen = wsCaption.GetLength();
-  if (iLen > 0) {
-    CFX_SizeF sz = CalcTextSize(wsCaption, m_pProperties->m_pThemeProvider);
-    rect.Set(0, 0, sz.x, sz.y);
-    rect.width += 25;
-    rect.height += 16;
-  }
-  IFWL_Widget::GetWidgetRect(rect, true);
-}
-
-void IFWL_ToolTip::Update() {
-  if (IsLocked())
-    return;
-  if (!m_pProperties->m_pThemeProvider)
-    m_pProperties->m_pThemeProvider = GetAvailableTheme();
-
-  UpdateTextOutStyles();
-  GetClientRect(m_rtClient);
-  m_rtCaption = m_rtClient;
-}
-
-void IFWL_ToolTip::GetClientRect(CFX_RectF& rect) {
-  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 = this;
-    x = *static_cast<FX_FLOAT*>(
-        pTheme->GetCapacity(&part, CFWL_WidgetCapacity::CXBorder));
-    y = *static_cast<FX_FLOAT*>(
-        pTheme->GetCapacity(&part, CFWL_WidgetCapacity::CYBorder));
-  }
-  rect = m_pProperties->m_rtWidget;
-  rect.Offset(-rect.left, -rect.top);
-  rect.Deflate(x, t, x, y);
-}
-
-void IFWL_ToolTip::DrawWidget(CFX_Graphics* pGraphics,
-                              const CFX_Matrix* pMatrix) {
-  if (!pGraphics || !m_pProperties->m_pThemeProvider)
-    return;
-
-  IFWL_ThemeProvider* pTheme = m_pProperties->m_pThemeProvider;
-  DrawBkground(pGraphics, pTheme, pMatrix);
-  DrawText(pGraphics, pTheme, pMatrix);
-}
-
-void IFWL_ToolTip::DrawBkground(CFX_Graphics* pGraphics,
-                                IFWL_ThemeProvider* pTheme,
-                                const CFX_Matrix* pMatrix) {
-  CFWL_ThemeBackground param;
-  param.m_pWidget = this;
-  param.m_iPart = CFWL_Part::Background;
-  param.m_dwStates = m_pProperties->m_dwStates;
-  param.m_pGraphics = pGraphics;
-  if (pMatrix)
-    param.m_matrix.Concat(*pMatrix);
-  param.m_rtPart = m_rtClient;
-  if (m_pProperties->m_dwStates & FWL_WGTSTATE_Focused)
-    param.m_pData = &m_rtCaption;
-  pTheme->DrawBackground(&param);
-}
-
-void IFWL_ToolTip::DrawText(CFX_Graphics* pGraphics,
-                            IFWL_ThemeProvider* pTheme,
-                            const CFX_Matrix* pMatrix) {
-  if (!m_pProperties->m_pDataProvider)
-    return;
-
-  CFX_WideString wsCaption;
-  m_pProperties->m_pDataProvider->GetCaption(this, wsCaption);
-  if (wsCaption.IsEmpty())
-    return;
-
-  CFWL_ThemeText param;
-  param.m_pWidget = this;
-  param.m_iPart = CFWL_Part::Caption;
-  param.m_dwStates = m_pProperties->m_dwStates;
-  param.m_pGraphics = pGraphics;
-  if (pMatrix)
-    param.m_matrix.Concat(*pMatrix);
-  param.m_rtPart = m_rtCaption;
-  param.m_wsText = wsCaption;
-  param.m_dwTTOStyles = m_dwTTOStyles;
-  param.m_iTTOAlign = m_iTTOAlign;
-  pTheme->DrawText(&param);
-}
-
-void IFWL_ToolTip::UpdateTextOutStyles() {
-  m_iTTOAlign = FDE_TTOALIGNMENT_Center;
-  m_dwTTOStyles = FDE_TTOSTYLE_SingleLine;
-  if (m_pProperties->m_dwStyleExes & FWL_WGTSTYLE_RTLReading)
-    m_dwTTOStyles |= FDE_TTOSTYLE_RTL;
-  if (m_pProperties->m_dwStyleExes & FWL_STYLEEXT_TTP_Multiline)
-    m_dwTTOStyles &= ~FDE_TTOSTYLE_SingleLine;
-}
-
-void IFWL_ToolTip::RefreshToolTipPos() {
-  if ((m_pProperties->m_dwStyleExes & FWL_STYLEEXT_TTP_NoAnchor) == 0) {
-    CFX_RectF rtPopup;
-    CFX_RectF rtWidget(m_pProperties->m_rtWidget);
-    CFX_RectF rtAnchor(m_rtAnchor);
-    rtPopup.Set(0, 0, 0, 0);
-    FX_FLOAT fx = rtAnchor.Center().x + 20;
-    FX_FLOAT fy = rtAnchor.Center().y + 20;
-    rtPopup.Set(fx, fy, rtWidget.Width(), rtWidget.Height());
-
-    if (rtPopup.bottom() > 0.0f)
-      rtPopup.Offset(0, 0.0f - rtPopup.bottom());
-    if (rtPopup.right() > 0.0f)
-      rtPopup.Offset(0.0f - rtPopup.right(), 0);
-    if (rtPopup.left < 0)
-      rtPopup.Offset(0 - rtPopup.left, 0);
-    if (rtPopup.top < 0)
-      rtPopup.Offset(0, 0 - rtPopup.top);
-
-    SetWidgetRect(rtPopup);
-    Update();
-  }
-}
-
-void IFWL_ToolTip::OnDrawWidget(CFX_Graphics* pGraphics,
-                                const CFX_Matrix* pMatrix) {
-  DrawWidget(pGraphics, pMatrix);
-}
-
-IFWL_ToolTip::Timer::Timer(IFWL_ToolTip* pToolTip) : IFWL_Timer(pToolTip) {}
-
-void IFWL_ToolTip::Timer::Run(IFWL_TimerInfo* pTimerInfo) {
-  IFWL_ToolTip* pToolTip = static_cast<IFWL_ToolTip*>(m_pWidget);
-
-  if (pToolTip->m_pTimerInfoShow == pTimerInfo && pToolTip->m_pTimerInfoShow) {
-    if (pToolTip->GetStates() & FWL_WGTSTATE_Invisible) {
-      pToolTip->SetStates(FWL_WGTSTATE_Invisible, false);
-      pToolTip->RefreshToolTipPos();
-      pToolTip->m_pTimerInfoShow->StopTimer();
-      pToolTip->m_pTimerInfoShow = nullptr;
-      return;
-    }
-  }
-  if (pToolTip->m_pTimerInfoHide == pTimerInfo && pToolTip->m_pTimerInfoHide) {
-    pToolTip->SetStates(FWL_WGTSTATE_Invisible, true);
-    pToolTip->m_pTimerInfoHide->StopTimer();
-    pToolTip->m_pTimerInfoHide = nullptr;
-  }
-}
diff --git a/xfa/fwl/core/ifwl_tooltip.h b/xfa/fwl/core/ifwl_tooltip.h
deleted file mode 100644
index 71a913010a..0000000000
--- a/xfa/fwl/core/ifwl_tooltip.h
+++ /dev/null
@@ -1,72 +0,0 @@
-// 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_IFWL_TOOLTIP_H_
-#define XFA_FWL_CORE_IFWL_TOOLTIP_H_
-
-#include <memory>
-
-#include "xfa/fwl/core/ifwl_form.h"
-#include "xfa/fwl/core/ifwl_timer.h"
-
-class CFWL_WidgetProperties;
-class IFWL_Widget;
-
-#define FWL_STYLEEXT_TTP_Rectangle (0L << 3)
-#define FWL_STYLEEXT_TTP_RoundCorner (1L << 3)
-#define FWL_STYLEEXT_TTP_Balloon (1L << 4)
-#define FWL_STYLEEXT_TTP_Multiline (1L << 5)
-#define FWL_STYLEEXT_TTP_NoAnchor (1L << 6)
-
-class IFWL_ToolTip : public IFWL_Form {
- public:
-  IFWL_ToolTip(const IFWL_App* app,
-               std::unique_ptr<CFWL_WidgetProperties> properties,
-               IFWL_Widget* pOuter);
-  ~IFWL_ToolTip() override;
-
-  // IFWL_Widget
-  FWL_Type GetClassID() const override;
-  void GetWidgetRect(CFX_RectF& rect, bool bAutoSize = false) override;
-  void Update() override;
-  void DrawWidget(CFX_Graphics* pGraphics,
-                  const CFX_Matrix* pMatrix = nullptr) override;
-  void SetStates(uint32_t dwStates, bool bSet) override;
-  void GetClientRect(CFX_RectF& rect) override;
-  void OnDrawWidget(CFX_Graphics* pGraphics,
-                    const CFX_Matrix* pMatrix) override;
-
- private:
-  class Timer : public IFWL_Timer {
-   public:
-    explicit Timer(IFWL_ToolTip* pToolTip);
-    ~Timer() override {}
-
-    void Run(IFWL_TimerInfo* pTimerInfo) override;
-  };
-  friend class IFWL_ToolTip::Timer;
-
-  void DrawBkground(CFX_Graphics* pGraphics,
-                    IFWL_ThemeProvider* pTheme,
-                    const CFX_Matrix* pMatrix);
-  void DrawText(CFX_Graphics* pGraphics,
-                IFWL_ThemeProvider* pTheme,
-                const CFX_Matrix* pMatrix);
-  void UpdateTextOutStyles();
-  void RefreshToolTipPos();
-
-  CFX_RectF m_rtClient;
-  CFX_RectF m_rtCaption;
-  uint32_t m_dwTTOStyles;
-  int32_t m_iTTOAlign;
-  CFX_RectF m_rtAnchor;
-  IFWL_TimerInfo* m_pTimerInfoShow;
-  IFWL_TimerInfo* m_pTimerInfoHide;
-  IFWL_ToolTip::Timer m_TimerShow;
-  IFWL_ToolTip::Timer m_TimerHide;
-};
-
-#endif  // XFA_FWL_CORE_IFWL_TOOLTIP_H_
diff --git a/xfa/fwl/core/ifwl_widget.h b/xfa/fwl/core/ifwl_widget.h
index 414678fb60..a7ae8ce590 100644
--- a/xfa/fwl/core/ifwl_widget.h
+++ b/xfa/fwl/core/ifwl_widget.h
@@ -64,11 +64,7 @@ enum class FWL_Type;
 
 class IFWL_Widget : public IFWL_WidgetDelegate {
  public:
-  class DataProvider {
-   public:
-    virtual void GetCaption(IFWL_Widget* pWidget,
-                            CFX_WideString& wsCaption) = 0;
-  };
+  class DataProvider {};
 
   ~IFWL_Widget() override;