Make CFWL_Edit::m_pEditEngine be a pointer.
We may need to ref-count this down the road so that it can
fire events causing the destruction of the CFWL object that
currently owns it.
-- Unset the delegate prior to its deletion per above.
-- Fully spell out |Edit|.
Change-Id: I9c1446bdfdd6c9288732a5f4c74b529f6bb4a841
Reviewed-on: https://pdfium-review.googlesource.com/c/pdfium/+/63650
Reviewed-by: Lei Zhang <thestig@chromium.org>
Commit-Queue: Tom Sepez <tsepez@chromium.org>
diff --git a/xfa/fwl/cfwl_edit.cpp b/xfa/fwl/cfwl_edit.cpp
index 2fc74c7..3ef9014 100644
--- a/xfa/fwl/cfwl_edit.cpp
+++ b/xfa/fwl/cfwl_edit.cpp
@@ -16,7 +16,6 @@
#include "core/fxge/text_char_pos.h"
#include "third_party/base/ptr_util.h"
#include "third_party/base/stl_util.h"
-#include "xfa/fde/cfde_texteditengine.h"
#include "xfa/fde/cfde_textout.h"
#include "xfa/fgas/font/cfgas_gefont.h"
#include "xfa/fwl/cfwl_app.h"
@@ -49,11 +48,13 @@
CFWL_Edit::CFWL_Edit(const CFWL_App* app,
std::unique_ptr<CFWL_WidgetProperties> properties,
CFWL_Widget* pOuter)
- : CFWL_Widget(app, std::move(properties), pOuter) {
- m_EdtEngine.SetDelegate(this);
+ : CFWL_Widget(app, std::move(properties), pOuter),
+ m_pEditEngine(pdfium::MakeUnique<CFDE_TextEditEngine>()) {
+ m_pEditEngine->SetDelegate(this);
}
CFWL_Edit::~CFWL_Edit() {
+ m_pEditEngine->SetDelegate(nullptr);
if (m_pProperties->m_dwStates & FWL_WGTSTATE_Focused)
HideCaret(nullptr);
}
@@ -82,9 +83,9 @@
CFX_RectF CFWL_Edit::GetAutosizedWidgetRect() {
CFX_RectF rect;
- if (m_EdtEngine.GetLength() > 0) {
+ if (m_pEditEngine->GetLength() > 0) {
CFX_SizeF size = CalcTextSize(
- m_EdtEngine.GetText(), m_pProperties->m_pThemeProvider.Get(),
+ m_pEditEngine->GetText(), m_pProperties->m_pThemeProvider.Get(),
!!(m_pProperties->m_dwStyleExes & FWL_STYLEEXT_EDT_MultiLine));
rect = CFX_RectF(0, 0, size);
}
@@ -162,43 +163,43 @@
}
void CFWL_Edit::SetText(const WideString& wsText) {
- m_EdtEngine.Clear();
- m_EdtEngine.Insert(0, wsText,
- CFDE_TextEditEngine::RecordOperation::kInsertRecord);
+ m_pEditEngine->Clear();
+ m_pEditEngine->Insert(0, wsText,
+ CFDE_TextEditEngine::RecordOperation::kInsertRecord);
}
void CFWL_Edit::SetTextSkipNotify(const WideString& wsText) {
- m_EdtEngine.Clear();
- m_EdtEngine.Insert(0, wsText,
- CFDE_TextEditEngine::RecordOperation::kSkipNotify);
+ m_pEditEngine->Clear();
+ m_pEditEngine->Insert(0, wsText,
+ CFDE_TextEditEngine::RecordOperation::kSkipNotify);
}
int32_t CFWL_Edit::GetTextLength() const {
- return m_EdtEngine.GetLength();
+ return m_pEditEngine->GetLength();
}
WideString CFWL_Edit::GetText() const {
- return m_EdtEngine.GetText();
+ return m_pEditEngine->GetText();
}
void CFWL_Edit::ClearText() {
- m_EdtEngine.Clear();
+ m_pEditEngine->Clear();
}
void CFWL_Edit::SelectAll() {
- m_EdtEngine.SelectAll();
+ m_pEditEngine->SelectAll();
}
bool CFWL_Edit::HasSelection() const {
- return m_EdtEngine.HasSelection();
+ return m_pEditEngine->HasSelection();
}
std::pair<size_t, size_t> CFWL_Edit::GetSelection() const {
- return m_EdtEngine.GetSelection();
+ return m_pEditEngine->GetSelection();
}
void CFWL_Edit::ClearSelection() {
- return m_EdtEngine.ClearSelection();
+ return m_pEditEngine->ClearSelection();
}
int32_t CFWL_Edit::GetLimit() const {
@@ -209,56 +210,56 @@
m_nLimit = nLimit;
if (m_nLimit > 0) {
- m_EdtEngine.SetHasCharacterLimit(true);
- m_EdtEngine.SetCharacterLimit(nLimit);
+ m_pEditEngine->SetHasCharacterLimit(true);
+ m_pEditEngine->SetCharacterLimit(nLimit);
} else {
- m_EdtEngine.SetHasCharacterLimit(false);
+ m_pEditEngine->SetHasCharacterLimit(false);
}
}
void CFWL_Edit::SetAliasChar(wchar_t wAlias) {
- m_EdtEngine.SetAliasChar(wAlias);
+ m_pEditEngine->SetAliasChar(wAlias);
}
Optional<WideString> CFWL_Edit::Copy() {
- if (!m_EdtEngine.HasSelection())
+ if (!m_pEditEngine->HasSelection())
return {};
- return {m_EdtEngine.GetSelectedText()};
+ return {m_pEditEngine->GetSelectedText()};
}
Optional<WideString> CFWL_Edit::Cut() {
- if (!m_EdtEngine.HasSelection())
+ if (!m_pEditEngine->HasSelection())
return {};
- WideString cut_text = m_EdtEngine.DeleteSelectedText();
+ WideString cut_text = m_pEditEngine->DeleteSelectedText();
UpdateCaret();
return {cut_text};
}
bool CFWL_Edit::Paste(const WideString& wsPaste) {
- if (m_EdtEngine.HasSelection())
- m_EdtEngine.ReplaceSelectedText(wsPaste);
+ if (m_pEditEngine->HasSelection())
+ m_pEditEngine->ReplaceSelectedText(wsPaste);
else
- m_EdtEngine.Insert(m_CursorPosition, wsPaste);
+ m_pEditEngine->Insert(m_CursorPosition, wsPaste);
return true;
}
bool CFWL_Edit::Undo() {
- return CanUndo() ? m_EdtEngine.Undo() : false;
+ return CanUndo() ? m_pEditEngine->Undo() : false;
}
bool CFWL_Edit::Redo() {
- return CanRedo() ? m_EdtEngine.Redo() : false;
+ return CanRedo() ? m_pEditEngine->Redo() : false;
}
bool CFWL_Edit::CanUndo() {
- return m_EdtEngine.CanUndo();
+ return m_pEditEngine->CanUndo();
}
bool CFWL_Edit::CanRedo() {
- return m_EdtEngine.CanRedo();
+ return m_pEditEngine->CanRedo();
}
void CFWL_Edit::SetOuter(CFWL_Widget* pOuter) {
@@ -385,12 +386,12 @@
}
bool bShowSel = !!(m_pProperties->m_dwStates & FWL_WGTSTATE_Focused);
- if (bShowSel && m_EdtEngine.HasSelection()) {
+ if (bShowSel && m_pEditEngine->HasSelection()) {
size_t sel_start;
size_t count;
- std::tie(sel_start, count) = m_EdtEngine.GetSelection();
+ std::tie(sel_start, count) = m_pEditEngine->GetSelection();
std::vector<CFX_RectF> rects =
- m_EdtEngine.GetCharacterRectsInRange(sel_start, count);
+ m_pEditEngine->GetCharacterRectsInRange(sel_start, count);
CXFA_GEPath path;
for (auto& rect : rects) {
@@ -441,7 +442,7 @@
const CFX_Matrix& mt) {
ASSERT(pRenderDev);
- RetainPtr<CFGAS_GEFont> font = m_EdtEngine.GetFont();
+ RetainPtr<CFGAS_GEFont> font = m_pEditEngine->GetFont();
if (!font)
return;
@@ -456,17 +457,17 @@
}
rtDocClip = mt.GetInverse().TransformRect(rtDocClip);
- for (const FDE_TEXTEDITPIECE& info : m_EdtEngine.GetTextPieces()) {
+ for (const FDE_TEXTEDITPIECE& info : m_pEditEngine->GetTextPieces()) {
// If this character is outside the clip, skip it.
if (!rtDocClip.IntersectWith(info.rtPiece))
continue;
- std::vector<TextCharPos> char_pos = m_EdtEngine.GetDisplayPos(info);
+ std::vector<TextCharPos> char_pos = m_pEditEngine->GetDisplayPos(info);
if (char_pos.empty())
continue;
- CFDE_TextOut::DrawString(pRenderDev, m_EdtEngine.GetFontColor(), font,
- char_pos, m_EdtEngine.GetFontSize(), mt);
+ CFDE_TextOut::DrawString(pRenderDev, m_pEditEngine->GetFontColor(), font,
+ char_pos, m_pEditEngine->GetFontSize(), mt);
}
}
@@ -476,13 +477,13 @@
}
void CFWL_Edit::UpdateEditParams() {
- m_EdtEngine.SetAvailableWidth(m_rtEngine.width);
- m_EdtEngine.SetCombText(
+ m_pEditEngine->SetAvailableWidth(m_rtEngine.width);
+ m_pEditEngine->SetCombText(
!!(m_pProperties->m_dwStyleExes & FWL_STYLEEXT_EDT_CombText));
- m_EdtEngine.EnableValidation(
+ m_pEditEngine->EnableValidation(
!!(m_pProperties->m_dwStyleExes & FWL_STYLEEXT_EDT_Validate));
- m_EdtEngine.EnablePasswordMode(
+ m_pEditEngine->EnablePasswordMode(
!!(m_pProperties->m_dwStyleExes & FWL_STYLEEXT_EDT_Password));
uint32_t alignment = 0;
@@ -510,22 +511,22 @@
default:
break;
}
- m_EdtEngine.SetAlignment(alignment);
+ m_pEditEngine->SetAlignment(alignment);
bool auto_hscroll =
!!(m_pProperties->m_dwStyleExes & FWL_STYLEEXT_EDT_AutoHScroll);
if (m_pProperties->m_dwStyleExes & FWL_STYLEEXT_EDT_MultiLine) {
- m_EdtEngine.EnableMultiLine(true);
- m_EdtEngine.EnableLineWrap(!auto_hscroll);
- m_EdtEngine.LimitVerticalScroll(
+ m_pEditEngine->EnableMultiLine(true);
+ m_pEditEngine->EnableLineWrap(!auto_hscroll);
+ m_pEditEngine->LimitVerticalScroll(
(m_pProperties->m_dwStyles & FWL_WGTSTYLE_VScroll) == 0 &&
(m_pProperties->m_dwStyleExes & FWL_STYLEEXT_EDT_AutoVScroll) == 0);
} else {
- m_EdtEngine.EnableMultiLine(false);
- m_EdtEngine.EnableLineWrap(false);
- m_EdtEngine.LimitVerticalScroll(false);
+ m_pEditEngine->EnableMultiLine(false);
+ m_pEditEngine->EnableLineWrap(false);
+ m_pEditEngine->LimitVerticalScroll(false);
}
- m_EdtEngine.LimitHorizontalScroll(!auto_hscroll);
+ m_pEditEngine->LimitHorizontalScroll(!auto_hscroll);
IFWL_ThemeProvider* theme = GetAvailableTheme();
CFWL_ThemePart part;
@@ -541,17 +542,17 @@
if (!pFont)
return;
- m_EdtEngine.SetFont(pFont);
- m_EdtEngine.SetFontColor(theme->GetTextColor(part));
- m_EdtEngine.SetFontSize(m_fFontSize);
- m_EdtEngine.SetLineSpace(theme->GetLineHeight(part));
- m_EdtEngine.SetTabWidth(m_fFontSize);
- m_EdtEngine.SetVisibleLineCount(m_rtEngine.height /
- theme->GetLineHeight(part));
+ m_pEditEngine->SetFont(pFont);
+ m_pEditEngine->SetFontColor(theme->GetTextColor(part));
+ m_pEditEngine->SetFontSize(m_fFontSize);
+ m_pEditEngine->SetLineSpace(theme->GetLineHeight(part));
+ m_pEditEngine->SetTabWidth(m_fFontSize);
+ m_pEditEngine->SetVisibleLineCount(m_rtEngine.height /
+ theme->GetLineHeight(part));
}
void CFWL_Edit::UpdateEditLayout() {
- m_EdtEngine.Layout();
+ m_pEditEngine->Layout();
}
bool CFWL_Edit::UpdateOffset() {
@@ -563,7 +564,7 @@
const CFX_RectF& edit_bounds = m_rtEngine;
if (edit_bounds.Contains(rtCaret)) {
- CFX_RectF contents_bounds = m_EdtEngine.GetContentsBoundingBox();
+ CFX_RectF contents_bounds = m_pEditEngine->GetContentsBoundingBox();
contents_bounds.Offset(fOffSetX, fOffSetY);
if (contents_bounds.right() < edit_bounds.right() && m_fScrollOffsetX > 0) {
m_fScrollOffsetX += contents_bounds.right() - edit_bounds.right();
@@ -618,7 +619,7 @@
}
float fOffsetY = 0.0f;
- CFX_RectF contents_bounds = m_EdtEngine.GetContentsBoundingBox();
+ CFX_RectF contents_bounds = m_pEditEngine->GetContentsBoundingBox();
if (m_pProperties->m_dwStyleExes & FWL_STYLEEXT_EDT_VCenter) {
fOffsetY = (m_rtEngine.height - contents_bounds.height) / 2.0f;
if (fOffsetY < (fSpaceAbove + fSpaceBelow) / 2.0f &&
@@ -660,7 +661,7 @@
if (!bShowHorz && !bShowVert)
return nullptr;
- CFX_RectF contents_bounds = m_EdtEngine.GetContentsBoundingBox();
+ CFX_RectF contents_bounds = m_pEditEngine->GetContentsBoundingBox();
CFWL_ScrollBar* pRepaint = nullptr;
if (bShowHorz) {
CFX_RectF rtScroll = m_pHorzScrollBar->GetWidgetRect();
@@ -695,7 +696,7 @@
if (rtScroll.height < contents_bounds.height) {
{
ScopedUpdateLock update_lock(m_pHorzScrollBar.get());
- float fStep = m_EdtEngine.GetLineSpace();
+ float fStep = m_pEditEngine->GetLineSpace();
float fRange =
std::max(contents_bounds.height - m_rtEngine.height, fStep);
@@ -736,7 +737,8 @@
}
bool CFWL_Edit::IsContentHeightOverflow() {
- return m_EdtEngine.GetContentsBoundingBox().height > m_rtEngine.height + 1.0f;
+ return m_pEditEngine->GetContentsBoundingBox().height >
+ m_rtEngine.height + 1.0f;
}
void CFWL_Edit::Layout() {
@@ -942,7 +944,7 @@
if (!m_bSetRange)
return true;
- WideString wsText = m_EdtEngine.GetText();
+ WideString wsText = m_pEditEngine->GetText();
if (wsText.IsEmpty())
return cNum != L'0';
@@ -971,9 +973,9 @@
void CFWL_Edit::UpdateCursorRect() {
int32_t bidi_level;
- if (m_EdtEngine.GetLength() > 0) {
+ if (m_pEditEngine->GetLength() > 0) {
std::tie(bidi_level, m_rtCaret) =
- m_EdtEngine.GetCharacterInfo(m_CursorPosition);
+ m_pEditEngine->GetCharacterInfo(m_CursorPosition);
} else {
bidi_level = 0;
m_rtCaret = CFX_RectF();
@@ -993,7 +995,7 @@
if (m_CursorPosition == position)
return;
- m_CursorPosition = std::min(position, m_EdtEngine.GetLength());
+ m_CursorPosition = std::min(position, m_pEditEngine->GetLength());
UpdateCursorRect();
OnCaretChanged();
}
@@ -1067,7 +1069,8 @@
}
void CFWL_Edit::DoRButtonDown(CFWL_MessageMouse* pMsg) {
- SetCursorPosition(m_EdtEngine.GetIndexForPoint(DeviceToEngine(pMsg->m_pos)));
+ SetCursorPosition(
+ m_pEditEngine->GetIndexForPoint(DeviceToEngine(pMsg->m_pos)));
}
void CFWL_Edit::OnFocusChanged(CFWL_Message* pMsg, bool bSet) {
@@ -1106,20 +1109,20 @@
SetGrab(true);
bool bRepaint = false;
- if (m_EdtEngine.HasSelection()) {
- m_EdtEngine.ClearSelection();
+ if (m_pEditEngine->HasSelection()) {
+ m_pEditEngine->ClearSelection();
bRepaint = true;
}
size_t index_at_click =
- m_EdtEngine.GetIndexForPoint(DeviceToEngine(pMsg->m_pos));
+ m_pEditEngine->GetIndexForPoint(DeviceToEngine(pMsg->m_pos));
if (index_at_click != m_CursorPosition &&
!!(pMsg->m_dwFlags & FWL_KEYFLAG_Shift)) {
size_t start = std::min(m_CursorPosition, index_at_click);
size_t end = std::max(m_CursorPosition, index_at_click);
- m_EdtEngine.SetSelection(start, end - start);
+ m_pEditEngine->SetSelection(start, end - start);
bRepaint = true;
} else {
SetCursorPosition(index_at_click);
@@ -1135,12 +1138,13 @@
}
void CFWL_Edit::OnButtonDoubleClick(CFWL_MessageMouse* pMsg) {
- size_t click_idx = m_EdtEngine.GetIndexForPoint(DeviceToEngine(pMsg->m_pos));
+ size_t click_idx =
+ m_pEditEngine->GetIndexForPoint(DeviceToEngine(pMsg->m_pos));
size_t start_idx;
size_t count;
- std::tie(start_idx, count) = m_EdtEngine.BoundsForWordAt(click_idx);
+ std::tie(start_idx, count) = m_pEditEngine->BoundsForWordAt(click_idx);
- m_EdtEngine.SetSelection(start_idx, count);
+ m_pEditEngine->SetSelection(start_idx, count);
m_CursorPosition = start_idx + count;
RepaintRect(m_rtEngine);
}
@@ -1151,24 +1155,25 @@
return;
size_t old_cursor_pos = m_CursorPosition;
- SetCursorPosition(m_EdtEngine.GetIndexForPoint(DeviceToEngine(pMsg->m_pos)));
+ SetCursorPosition(
+ m_pEditEngine->GetIndexForPoint(DeviceToEngine(pMsg->m_pos)));
if (old_cursor_pos == m_CursorPosition)
return;
- size_t length = m_EdtEngine.GetLength();
+ size_t length = m_pEditEngine->GetLength();
if (m_CursorPosition > length)
SetCursorPosition(length);
size_t sel_start = 0;
size_t count = 0;
- if (m_EdtEngine.HasSelection())
- std::tie(sel_start, count) = m_EdtEngine.GetSelection();
+ if (m_pEditEngine->HasSelection())
+ std::tie(sel_start, count) = m_pEditEngine->GetSelection();
else
sel_start = old_cursor_pos;
size_t start_pos = std::min(sel_start, m_CursorPosition);
size_t end_pos = std::max(sel_start, m_CursorPosition);
- m_EdtEngine.SetSelection(start_pos, end_pos - start_pos);
+ m_pEditEngine->SetSelection(start_pos, end_pos - start_pos);
}
void CFWL_Edit::OnKeyDown(CFWL_MessageKey* pMsg) {
@@ -1176,34 +1181,34 @@
bool bCtrl = !!(pMsg->m_dwFlags & FWL_KEYFLAG_Ctrl);
size_t sel_start = m_CursorPosition;
- if (m_EdtEngine.HasSelection()) {
+ if (m_pEditEngine->HasSelection()) {
size_t start_idx;
size_t count;
- std::tie(start_idx, count) = m_EdtEngine.GetSelection();
+ std::tie(start_idx, count) = m_pEditEngine->GetSelection();
sel_start = start_idx;
}
switch (pMsg->m_dwKeyCode) {
case XFA_FWL_VKEY_Left:
- SetCursorPosition(m_EdtEngine.GetIndexLeft(m_CursorPosition));
+ SetCursorPosition(m_pEditEngine->GetIndexLeft(m_CursorPosition));
break;
case XFA_FWL_VKEY_Right:
- SetCursorPosition(m_EdtEngine.GetIndexRight(m_CursorPosition));
+ SetCursorPosition(m_pEditEngine->GetIndexRight(m_CursorPosition));
break;
case XFA_FWL_VKEY_Up:
- SetCursorPosition(m_EdtEngine.GetIndexUp(m_CursorPosition));
+ SetCursorPosition(m_pEditEngine->GetIndexUp(m_CursorPosition));
break;
case XFA_FWL_VKEY_Down:
- SetCursorPosition(m_EdtEngine.GetIndexDown(m_CursorPosition));
+ SetCursorPosition(m_pEditEngine->GetIndexDown(m_CursorPosition));
break;
case XFA_FWL_VKEY_Home:
SetCursorPosition(
- bCtrl ? 0 : m_EdtEngine.GetIndexAtStartOfLine(m_CursorPosition));
+ bCtrl ? 0 : m_pEditEngine->GetIndexAtStartOfLine(m_CursorPosition));
break;
case XFA_FWL_VKEY_End:
SetCursorPosition(
- bCtrl ? m_EdtEngine.GetLength()
- : m_EdtEngine.GetIndexAtEndOfLine(m_CursorPosition));
+ bCtrl ? m_pEditEngine->GetLength()
+ : m_pEditEngine->GetIndexAtEndOfLine(m_CursorPosition));
break;
case XFA_FWL_VKEY_Delete: {
if ((m_pProperties->m_dwStyleExes & FWL_STYLEEXT_EDT_ReadOnly) ||
@@ -1211,7 +1216,7 @@
break;
}
- m_EdtEngine.Delete(m_CursorPosition, 1);
+ m_pEditEngine->Delete(m_CursorPosition, 1);
UpdateCaret();
break;
}
@@ -1224,8 +1229,8 @@
// Update the selection.
if (bShift && sel_start != m_CursorPosition) {
- m_EdtEngine.SetSelection(std::min(sel_start, m_CursorPosition),
- std::max(sel_start, m_CursorPosition));
+ m_pEditEngine->SetSelection(std::min(sel_start, m_CursorPosition),
+ std::max(sel_start, m_CursorPosition));
RepaintRect(m_rtEngine);
}
}
@@ -1241,7 +1246,7 @@
case L'\b':
if (m_CursorPosition > 0) {
SetCursorPosition(m_CursorPosition - 1);
- m_EdtEngine.Delete(m_CursorPosition, 1);
+ m_pEditEngine->Delete(m_CursorPosition, 1);
UpdateCaret();
}
break;
@@ -1250,12 +1255,12 @@
case 127: // Delete
break;
case L'\t':
- m_EdtEngine.Insert(m_CursorPosition, L"\t");
+ m_pEditEngine->Insert(m_CursorPosition, L"\t");
SetCursorPosition(m_CursorPosition + 1);
break;
case L'\r':
if (m_pProperties->m_dwStyleExes & FWL_STYLEEXT_EDT_WantReturn) {
- m_EdtEngine.Insert(m_CursorPosition, L"\n");
+ m_pEditEngine->Insert(m_CursorPosition, L"\n");
SetCursorPosition(m_CursorPosition + 1);
}
break;
@@ -1263,7 +1268,7 @@
if (pMsg->m_dwFlags & kEditingModifier)
break;
- m_EdtEngine.Insert(m_CursorPosition, WideString(c));
+ m_pEditEngine->Insert(m_CursorPosition, WideString(c));
SetCursorPosition(m_CursorPosition + 1);
break;
}
diff --git a/xfa/fwl/cfwl_edit.h b/xfa/fwl/cfwl_edit.h
index 4c59ef7..0242e5c 100644
--- a/xfa/fwl/cfwl_edit.h
+++ b/xfa/fwl/cfwl_edit.h
@@ -103,7 +103,7 @@
void ShowCaret(CFX_RectF* pRect);
void HideCaret(CFX_RectF* pRect);
const CFX_RectF& GetRTClient() const { return m_rtClient; }
- CFDE_TextEditEngine* GetTxtEdtEngine() { return &m_EdtEngine; }
+ CFDE_TextEditEngine* GetTxtEdtEngine() { return m_pEditEngine.get(); }
private:
void RenderText(CFX_RenderDevice* pRenderDev,
@@ -162,7 +162,7 @@
float m_fScrollOffsetY = 0.0f;
float m_fFontSize = 0.0f;
size_t m_CursorPosition = 0;
- CFDE_TextEditEngine m_EdtEngine;
+ std::unique_ptr<CFDE_TextEditEngine> const m_pEditEngine;
std::unique_ptr<CFWL_ScrollBar> m_pVertScrollBar;
std::unique_ptr<CFWL_ScrollBar> m_pHorzScrollBar;
std::unique_ptr<CFWL_Caret> m_pCaret;
