Merge the CFWL_*Imp classes into the IFWL_* classes.

This Cl merges the implementation classes up into the IFWL classes as the
intermediate classes were just acting as proxies.

Review-Url: https://chromiumcodereview.appspot.com/2432423002

1 files changed, 0 insertions, 1223 deletions

diff --git a/xfa/fwl/basewidget/fwl_listboximp.cpp b/xfa/fwl/basewidget/fwl_listboximp.cpp
deleted file mode 100644
index 33a0a8d1ee..0000000000
--- a/xfa/fwl/basewidget/fwl_listboximp.cpp
+++ /dev/null
@@ -1,1223 +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/basewidget/fwl_listboximp.h"
-
-#include "xfa/fde/tto/fde_textout.h"
-#include "xfa/fwl/basewidget/fwl_comboboximp.h"
-#include "xfa/fwl/basewidget/fwl_scrollbarimp.h"
-#include "xfa/fwl/core/cfwl_message.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/fwl_widgetimp.h"
-#include "xfa/fwl/core/ifwl_app.h"
-#include "xfa/fwl/core/ifwl_themeprovider.h"
-
-namespace {
-
-const int kItemTextMargin = 2;
-
-}  // namespace
-
-// static
-IFWL_ListBox* IFWL_ListBox::Create(const CFWL_WidgetImpProperties& properties,
-                                   IFWL_Widget* pOuter) {
-  IFWL_ListBox* pListBox = new IFWL_ListBox;
-  CFWL_ListBoxImp* pListBoxImpl = new CFWL_ListBoxImp(properties, pOuter);
-  pListBox->SetImpl(pListBoxImpl);
-  pListBoxImpl->SetInterface(pListBox);
-  return pListBox;
-}
-// static
-IFWL_ListBox* IFWL_ListBox::CreateComboList(
-    const CFWL_WidgetImpProperties& properties,
-    IFWL_Widget* pOuter) {
-  IFWL_ListBox* pListBox = new IFWL_ListBox;
-  CFWL_ListBoxImp* pComboListImpl = new CFWL_ComboListImp(properties, pOuter);
-  pListBox->SetImpl(pComboListImpl);
-  pComboListImpl->SetInterface(pListBox);
-  return pListBox;
-}
-IFWL_ListBox::IFWL_ListBox() {}
-int32_t IFWL_ListBox::CountSelItems() {
-  return static_cast<CFWL_ListBoxImp*>(GetImpl())->CountSelItems();
-}
-IFWL_ListItem* IFWL_ListBox::GetSelItem(int32_t nIndexSel) {
-  return static_cast<CFWL_ListBoxImp*>(GetImpl())->GetSelItem(nIndexSel);
-}
-int32_t IFWL_ListBox::GetSelIndex(int32_t nIndex) {
-  return static_cast<CFWL_ListBoxImp*>(GetImpl())->GetSelIndex(nIndex);
-}
-FWL_Error IFWL_ListBox::SetSelItem(IFWL_ListItem* pItem, FX_BOOL bSelect) {
-  return static_cast<CFWL_ListBoxImp*>(GetImpl())->SetSelItem(pItem, bSelect);
-}
-FWL_Error IFWL_ListBox::GetItemText(IFWL_ListItem* pItem,
-                                    CFX_WideString& wsText) {
-  return static_cast<CFWL_ListBoxImp*>(GetImpl())->GetItemText(pItem, wsText);
-}
-FWL_Error IFWL_ListBox::GetScrollPos(FX_FLOAT& fPos, FX_BOOL bVert) {
-  return static_cast<CFWL_ListBoxImp*>(GetImpl())->GetScrollPos(fPos, bVert);
-}
-
-CFWL_ListBoxImp::CFWL_ListBoxImp(const CFWL_WidgetImpProperties& properties,
-                                 IFWL_Widget* pOuter)
-    : CFWL_WidgetImp(properties, pOuter),
-      m_dwTTOStyles(0),
-      m_iTTOAligns(0),
-      m_hAnchor(nullptr),
-      m_fScorllBarWidth(0),
-      m_bLButtonDown(FALSE),
-      m_pScrollBarTP(nullptr) {
-  m_rtClient.Reset();
-  m_rtConent.Reset();
-  m_rtStatic.Reset();
-}
-
-CFWL_ListBoxImp::~CFWL_ListBoxImp() {}
-
-FWL_Error CFWL_ListBoxImp::GetClassName(CFX_WideString& wsClass) const {
-  wsClass = FWL_CLASS_ListBox;
-  return FWL_Error::Succeeded;
-}
-
-FWL_Type CFWL_ListBoxImp::GetClassID() const {
-  return FWL_Type::ListBox;
-}
-
-FWL_Error CFWL_ListBoxImp::Initialize() {
-  if (CFWL_WidgetImp::Initialize() != FWL_Error::Succeeded)
-    return FWL_Error::Indefinite;
-
-  m_pDelegate = new CFWL_ListBoxImpDelegate(this);
-  return FWL_Error::Succeeded;
-}
-
-FWL_Error CFWL_ListBoxImp::Finalize() {
-  if (m_pVertScrollBar) {
-    m_pVertScrollBar->Finalize();
-  }
-  if (m_pHorzScrollBar) {
-    m_pHorzScrollBar->Finalize();
-  }
-  delete m_pDelegate;
-  m_pDelegate = nullptr;
-  return CFWL_WidgetImp::Finalize();
-}
-FWL_Error CFWL_ListBoxImp::GetWidgetRect(CFX_RectF& rect, FX_BOOL bAutoSize) {
-  if (bAutoSize) {
-    rect.Set(0, 0, 0, 0);
-    if (!m_pProperties->m_pThemeProvider) {
-      m_pProperties->m_pThemeProvider = GetAvailableTheme();
-    }
-    CFX_SizeF fs = CalcSize(TRUE);
-    rect.Set(0, 0, fs.x, fs.y);
-    CFWL_WidgetImp::GetWidgetRect(rect, TRUE);
-  } else {
-    rect = m_pProperties->m_rtWidget;
-  }
-  return FWL_Error::Succeeded;
-}
-FWL_Error CFWL_ListBoxImp::Update() {
-  if (IsLocked()) {
-    return FWL_Error::Indefinite;
-  }
-  if (!m_pProperties->m_pThemeProvider) {
-    m_pProperties->m_pThemeProvider = GetAvailableTheme();
-  }
-  m_iTTOAligns = FDE_TTOALIGNMENT_Center;
-  switch (m_pProperties->m_dwStyleExes & FWL_STYLEEXT_LTB_AlignMask) {
-    case FWL_STYLEEXT_LTB_LeftAlign: {
-      m_iTTOAligns = FDE_TTOALIGNMENT_CenterLeft;
-      break;
-    }
-    case FWL_STYLEEXT_LTB_RightAlign: {
-      m_iTTOAligns = FDE_TTOALIGNMENT_CenterRight;
-      break;
-    }
-    case FWL_STYLEEXT_LTB_CenterAlign:
-    default: { m_iTTOAligns = FDE_TTOALIGNMENT_Center; }
-  }
-  if (m_pProperties->m_dwStyleExes & FWL_WGTSTYLE_RTLReading) {
-    m_dwTTOStyles |= FDE_TTOSTYLE_RTL;
-  }
-  m_dwTTOStyles |= FDE_TTOSTYLE_SingleLine;
-  m_fScorllBarWidth = GetScrollWidth();
-  CalcSize();
-  return FWL_Error::Succeeded;
-}
-FWL_WidgetHit CFWL_ListBoxImp::HitTest(FX_FLOAT fx, FX_FLOAT fy) {
-  if (IsShowScrollBar(FALSE)) {
-    CFX_RectF rect;
-    m_pHorzScrollBar->GetWidgetRect(rect);
-    if (rect.Contains(fx, fy))
-      return FWL_WidgetHit::HScrollBar;
-  }
-  if (IsShowScrollBar(TRUE)) {
-    CFX_RectF rect;
-    m_pVertScrollBar->GetWidgetRect(rect);
-    if (rect.Contains(fx, fy))
-      return FWL_WidgetHit::VScrollBar;
-  }
-  if (m_rtClient.Contains(fx, fy))
-    return FWL_WidgetHit::Client;
-  return FWL_WidgetHit::Unknown;
-}
-FWL_Error CFWL_ListBoxImp::DrawWidget(CFX_Graphics* pGraphics,
-                                      const CFX_Matrix* pMatrix) {
-  if (!pGraphics)
-    return FWL_Error::Indefinite;
-  if (!m_pProperties->m_pThemeProvider)
-    return FWL_Error::Indefinite;
-  IFWL_ThemeProvider* pTheme = m_pProperties->m_pThemeProvider;
-  pGraphics->SaveGraphState();
-  if (HasBorder()) {
-    DrawBorder(pGraphics, CFWL_Part::Border, pTheme, pMatrix);
-  }
-  if (HasEdge()) {
-    DrawEdge(pGraphics, CFWL_Part::Edge, pTheme, pMatrix);
-  }
-  CFX_RectF rtClip(m_rtConent);
-  if (IsShowScrollBar(FALSE)) {
-    rtClip.height -= m_fScorllBarWidth;
-  }
-  if (IsShowScrollBar(TRUE)) {
-    rtClip.width -= m_fScorllBarWidth;
-  }
-  if (pMatrix) {
-    pMatrix->TransformRect(rtClip);
-  }
-  pGraphics->SetClipRect(rtClip);
-  if ((m_pProperties->m_dwStyles & FWL_WGTSTYLE_NoBackground) == 0) {
-    DrawBkground(pGraphics, pTheme, pMatrix);
-  }
-  DrawItems(pGraphics, pTheme, pMatrix);
-  pGraphics->RestoreGraphState();
-  return FWL_Error::Succeeded;
-}
-FWL_Error CFWL_ListBoxImp::SetThemeProvider(
-    IFWL_ThemeProvider* pThemeProvider) {
-  if (!pThemeProvider)
-    return FWL_Error::Indefinite;
-  m_pProperties->m_pThemeProvider = pThemeProvider;
-  return FWL_Error::Succeeded;
-}
-int32_t CFWL_ListBoxImp::CountSelItems() {
-  if (!m_pProperties->m_pDataProvider)
-    return 0;
-  int32_t iRet = 0;
-  IFWL_ListBoxDP* pData =
-      static_cast<IFWL_ListBoxDP*>(m_pProperties->m_pDataProvider);
-  int32_t iCount = pData->CountItems(m_pInterface);
-  for (int32_t i = 0; i < iCount; i++) {
-    IFWL_ListItem* pItem = pData->GetItem(m_pInterface, i);
-    if (!pItem) {
-      continue;
-    }
-    uint32_t dwStyle = pData->GetItemStyles(m_pInterface, pItem);
-    if (dwStyle & FWL_ITEMSTATE_LTB_Selected) {
-      iRet++;
-    }
-  }
-  return iRet;
-}
-IFWL_ListItem* CFWL_ListBoxImp::GetSelItem(int32_t nIndexSel) {
-  if (!m_pProperties->m_pDataProvider)
-    return nullptr;
-  int32_t index = 0;
-  IFWL_ListBoxDP* pData =
-      static_cast<IFWL_ListBoxDP*>(m_pProperties->m_pDataProvider);
-  int32_t iCount = pData->CountItems(m_pInterface);
-  for (int32_t i = 0; i < iCount; i++) {
-    IFWL_ListItem* pItem = pData->GetItem(m_pInterface, i);
-    if (!pItem) {
-      return nullptr;
-    }
-    uint32_t dwStyle = pData->GetItemStyles(m_pInterface, pItem);
-    if (dwStyle & FWL_ITEMSTATE_LTB_Selected) {
-      if (index == nIndexSel) {
-        return pItem;
-      } else {
-        index++;
-      }
-    }
-  }
-  return nullptr;
-}
-int32_t CFWL_ListBoxImp::GetSelIndex(int32_t nIndex) {
-  if (!m_pProperties->m_pDataProvider)
-    return -1;
-  int32_t index = 0;
-  IFWL_ListBoxDP* pData =
-      static_cast<IFWL_ListBoxDP*>(m_pProperties->m_pDataProvider);
-  int32_t iCount = pData->CountItems(m_pInterface);
-  for (int32_t i = 0; i < iCount; i++) {
-    IFWL_ListItem* pItem = pData->GetItem(m_pInterface, i);
-    if (!pItem) {
-      return -1;
-    }
-    uint32_t dwStyle = pData->GetItemStyles(m_pInterface, pItem);
-    if (dwStyle & FWL_ITEMSTATE_LTB_Selected) {
-      if (index == nIndex) {
-        return i;
-      } else {
-        index++;
-      }
-    }
-  }
-  return -1;
-}
-FWL_Error CFWL_ListBoxImp::SetSelItem(IFWL_ListItem* pItem, FX_BOOL bSelect) {
-  if (!m_pProperties->m_pDataProvider)
-    return FWL_Error::Indefinite;
-  if (!pItem) {
-    if (bSelect) {
-      SelectAll();
-    } else {
-      ClearSelection();
-      SetFocusItem(nullptr);
-    }
-    return FWL_Error::Indefinite;
-  }
-  if (m_pProperties->m_dwStyleExes & FWL_STYLEEXT_LTB_MultiSelection) {
-    SetSelectionDirect(pItem, bSelect);
-  } else {
-    SetSelection(pItem, pItem, bSelect);
-  }
-  return FWL_Error::Succeeded;
-}
-FWL_Error CFWL_ListBoxImp::GetItemText(IFWL_ListItem* pItem,
-                                       CFX_WideString& wsText) {
-  if (!m_pProperties->m_pDataProvider)
-    return FWL_Error::Indefinite;
-  IFWL_ListBoxDP* pData =
-      static_cast<IFWL_ListBoxDP*>(m_pProperties->m_pDataProvider);
-  if (!pItem)
-    return FWL_Error::Indefinite;
-  pData->GetItemText(m_pInterface, pItem, wsText);
-  return FWL_Error::Succeeded;
-}
-
-FWL_Error CFWL_ListBoxImp::GetScrollPos(FX_FLOAT& fPos, FX_BOOL bVert) {
-  if ((bVert && IsShowScrollBar(TRUE)) || (!bVert && IsShowScrollBar(FALSE))) {
-    IFWL_ScrollBar* pScrollBar =
-        bVert ? m_pVertScrollBar.get() : m_pHorzScrollBar.get();
-    fPos = pScrollBar->GetPos();
-    return FWL_Error::Succeeded;
-  }
-  return FWL_Error::Indefinite;
-}
-
-IFWL_ListItem* CFWL_ListBoxImp::GetItem(IFWL_ListItem* pItem,
-                                        uint32_t dwKeyCode) {
-  IFWL_ListItem* hRet = nullptr;
-  switch (dwKeyCode) {
-    case FWL_VKEY_Up:
-    case FWL_VKEY_Down:
-    case FWL_VKEY_Home:
-    case FWL_VKEY_End: {
-      const bool bUp = dwKeyCode == FWL_VKEY_Up;
-      const bool bDown = dwKeyCode == FWL_VKEY_Down;
-      const bool bHome = dwKeyCode == FWL_VKEY_Home;
-      IFWL_ListBoxDP* pData =
-          static_cast<IFWL_ListBoxDP*>(m_pProperties->m_pDataProvider);
-      int32_t iDstItem = -1;
-      if (bUp || bDown) {
-        int32_t index = pData->GetItemIndex(m_pInterface, pItem);
-        iDstItem = dwKeyCode == FWL_VKEY_Up ? index - 1 : index + 1;
-      } else if (bHome) {
-        iDstItem = 0;
-      } else {
-        int32_t iCount = pData->CountItems(m_pInterface);
-        iDstItem = iCount - 1;
-      }
-      hRet = pData->GetItem(m_pInterface, iDstItem);
-      break;
-    }
-    default: {}
-  }
-  return hRet;
-}
-void CFWL_ListBoxImp::SetSelection(IFWL_ListItem* hStart,
-                                   IFWL_ListItem* hEnd,
-                                   FX_BOOL bSelected) {
-  IFWL_ListBoxDP* pData =
-      static_cast<IFWL_ListBoxDP*>(m_pProperties->m_pDataProvider);
-  int32_t iStart = pData->GetItemIndex(m_pInterface, hStart);
-  int32_t iEnd = pData->GetItemIndex(m_pInterface, hEnd);
-  if (iStart > iEnd) {
-    int32_t iTemp = iStart;
-    iStart = iEnd;
-    iEnd = iTemp;
-  }
-  if (bSelected) {
-    int32_t iCount = pData->CountItems(m_pInterface);
-    for (int32_t i = 0; i < iCount; i++) {
-      IFWL_ListItem* pItem = pData->GetItem(m_pInterface, i);
-      SetSelectionDirect(pItem, FALSE);
-    }
-  }
-  for (; iStart <= iEnd; iStart++) {
-    IFWL_ListItem* pItem = pData->GetItem(m_pInterface, iStart);
-    SetSelectionDirect(pItem, bSelected);
-  }
-}
-void CFWL_ListBoxImp::SetSelectionDirect(IFWL_ListItem* pItem,
-                                         FX_BOOL bSelect) {
-  IFWL_ListBoxDP* pData =
-      static_cast<IFWL_ListBoxDP*>(m_pProperties->m_pDataProvider);
-  uint32_t dwOldStyle = pData->GetItemStyles(m_pInterface, pItem);
-  bSelect ? dwOldStyle |= FWL_ITEMSTATE_LTB_Selected
-          : dwOldStyle &= ~FWL_ITEMSTATE_LTB_Selected;
-  pData->SetItemStyles(m_pInterface, pItem, dwOldStyle);
-}
-FX_BOOL CFWL_ListBoxImp::IsItemSelected(IFWL_ListItem* pItem) {
-  IFWL_ListBoxDP* pData =
-      static_cast<IFWL_ListBoxDP*>(m_pProperties->m_pDataProvider);
-  uint32_t dwState = pData->GetItemStyles(m_pInterface, pItem);
-  return (dwState & FWL_ITEMSTATE_LTB_Selected) != 0;
-}
-void CFWL_ListBoxImp::ClearSelection() {
-  FX_BOOL bMulti =
-      m_pProperties->m_dwStyleExes & FWL_STYLEEXT_LTB_MultiSelection;
-  IFWL_ListBoxDP* pData =
-      static_cast<IFWL_ListBoxDP*>(m_pProperties->m_pDataProvider);
-  int32_t iCount = pData->CountItems(m_pInterface);
-  for (int32_t i = 0; i < iCount; i++) {
-    IFWL_ListItem* pItem = pData->GetItem(m_pInterface, i);
-    uint32_t dwState = pData->GetItemStyles(m_pInterface, pItem);
-    if (!(dwState & FWL_ITEMSTATE_LTB_Selected))
-      continue;
-    SetSelectionDirect(pItem, FALSE);
-    if (!bMulti)
-      return;
-  }
-}
-void CFWL_ListBoxImp::SelectAll() {
-  FX_BOOL bMulti =
-      m_pProperties->m_dwStyleExes & FWL_STYLEEXT_LTB_MultiSelection;
-  if (!bMulti) {
-    return;
-  }
-  IFWL_ListBoxDP* pData =
-      static_cast<IFWL_ListBoxDP*>(m_pProperties->m_pDataProvider);
-  int32_t iCount = pData->CountItems(m_pInterface);
-  if (iCount > 0) {
-    IFWL_ListItem* pItemStart = pData->GetItem(m_pInterface, 0);
-    IFWL_ListItem* pItemEnd = pData->GetItem(m_pInterface, iCount - 1);
-    SetSelection(pItemStart, pItemEnd, FALSE);
-  }
-}
-IFWL_ListItem* CFWL_ListBoxImp::GetFocusedItem() {
-  IFWL_ListBoxDP* pData =
-      static_cast<IFWL_ListBoxDP*>(m_pProperties->m_pDataProvider);
-  int32_t iCount = pData->CountItems(m_pInterface);
-  for (int32_t i = 0; i < iCount; i++) {
-    IFWL_ListItem* pItem = pData->GetItem(m_pInterface, i);
-    if (!pItem)
-      return nullptr;
-    if (pData->GetItemStyles(m_pInterface, pItem) & FWL_ITEMSTATE_LTB_Focused) {
-      return pItem;
-    }
-  }
-  return nullptr;
-}
-void CFWL_ListBoxImp::SetFocusItem(IFWL_ListItem* pItem) {
-  IFWL_ListBoxDP* pData =
-      static_cast<IFWL_ListBoxDP*>(m_pProperties->m_pDataProvider);
-  IFWL_ListItem* hFocus = GetFocusedItem();
-  if (pItem != hFocus) {
-    if (hFocus) {
-      uint32_t dwStyle = pData->GetItemStyles(m_pInterface, hFocus);
-      dwStyle &= ~FWL_ITEMSTATE_LTB_Focused;
-      pData->SetItemStyles(m_pInterface, hFocus, dwStyle);
-    }
-    if (pItem) {
-      uint32_t dwStyle = pData->GetItemStyles(m_pInterface, pItem);
-      dwStyle |= FWL_ITEMSTATE_LTB_Focused;
-      pData->SetItemStyles(m_pInterface, pItem, dwStyle);
-    }
-  }
-}
-IFWL_ListItem* CFWL_ListBoxImp::GetItemAtPoint(FX_FLOAT fx, FX_FLOAT fy) {
-  fx -= m_rtConent.left, fy -= m_rtConent.top;
-  FX_FLOAT fPosX = 0.0f;
-  if (m_pHorzScrollBar) {
-    fPosX = m_pHorzScrollBar->GetPos();
-  }
-  FX_FLOAT fPosY = 0.0;
-  if (m_pVertScrollBar) {
-    fPosY = m_pVertScrollBar->GetPos();
-  }
-  IFWL_ListBoxDP* pData =
-      static_cast<IFWL_ListBoxDP*>(m_pProperties->m_pDataProvider);
-  int32_t nCount = pData->CountItems(m_pInterface);
-  for (int32_t i = 0; i < nCount; i++) {
-    IFWL_ListItem* pItem = pData->GetItem(m_pInterface, i);
-    if (!pItem) {
-      continue;
-    }
-    CFX_RectF rtItem;
-    pData->GetItemRect(m_pInterface, pItem, rtItem);
-    rtItem.Offset(-fPosX, -fPosY);
-    if (rtItem.Contains(fx, fy)) {
-      return pItem;
-    }
-  }
-  return nullptr;
-}
-FX_BOOL CFWL_ListBoxImp::GetItemCheckRect(IFWL_ListItem* pItem,
-                                          CFX_RectF& rtCheck) {
-  if (!m_pProperties->m_pDataProvider)
-    return FALSE;
-  if (!(m_pProperties->m_dwStyleExes & FWL_STYLEEXT_LTB_Check)) {
-    return FALSE;
-  }
-  IFWL_ListBoxDP* pData =
-      static_cast<IFWL_ListBoxDP*>(m_pProperties->m_pDataProvider);
-  pData->GetItemCheckRect(m_pInterface, pItem, rtCheck);
-  return TRUE;
-}
-FX_BOOL CFWL_ListBoxImp::GetItemChecked(IFWL_ListItem* pItem) {
-  if (!m_pProperties->m_pDataProvider)
-    return FALSE;
-  if (!(m_pProperties->m_dwStyleExes & FWL_STYLEEXT_LTB_Check)) {
-    return FALSE;
-  }
-  IFWL_ListBoxDP* pData =
-      static_cast<IFWL_ListBoxDP*>(m_pProperties->m_pDataProvider);
-  return (pData->GetItemCheckState(m_pInterface, pItem) &
-          FWL_ITEMSTATE_LTB_Checked);
-}
-FX_BOOL CFWL_ListBoxImp::SetItemChecked(IFWL_ListItem* pItem,
-                                        FX_BOOL bChecked) {
-  if (!m_pProperties->m_pDataProvider)
-    return FALSE;
-  if (!(m_pProperties->m_dwStyleExes & FWL_STYLEEXT_LTB_Check)) {
-    return FALSE;
-  }
-  IFWL_ListBoxDP* pData =
-      static_cast<IFWL_ListBoxDP*>(m_pProperties->m_pDataProvider);
-  pData->SetItemCheckState(m_pInterface, pItem,
-                           bChecked ? FWL_ITEMSTATE_LTB_Checked : 0);
-  return TRUE;
-}
-FX_BOOL CFWL_ListBoxImp::ScrollToVisible(IFWL_ListItem* pItem) {
-  if (!m_pVertScrollBar)
-    return FALSE;
-  CFX_RectF rtItem;
-  IFWL_ListBoxDP* pData =
-      static_cast<IFWL_ListBoxDP*>(m_pProperties->m_pDataProvider);
-  pData->GetItemRect(m_pInterface, pItem, rtItem);
-  FX_BOOL bScroll = FALSE;
-  FX_FLOAT fPosY = m_pVertScrollBar->GetPos();
-  rtItem.Offset(0, -fPosY + m_rtConent.top);
-  if (rtItem.top < m_rtConent.top) {
-    fPosY += rtItem.top - m_rtConent.top;
-    bScroll = TRUE;
-  } else if (rtItem.bottom() > m_rtConent.bottom()) {
-    fPosY += rtItem.bottom() - m_rtConent.bottom();
-    bScroll = TRUE;
-  }
-  if (!bScroll) {
-    return FALSE;
-  }
-  m_pVertScrollBar->SetPos(fPosY);
-  m_pVertScrollBar->SetTrackPos(fPosY);
-  Repaint(&m_rtClient);
-  return TRUE;
-}
-void CFWL_ListBoxImp::DrawBkground(CFX_Graphics* pGraphics,
-                                   IFWL_ThemeProvider* pTheme,
-                                   const CFX_Matrix* pMatrix) {
-  if (!pGraphics)
-    return;
-  if (!pTheme)
-    return;
-  CFWL_ThemeBackground param;
-  param.m_pWidget = m_pInterface;
-  param.m_iPart = CFWL_Part::Background;
-  param.m_dwStates = 0;
-  param.m_pGraphics = pGraphics;
-  param.m_matrix.Concat(*pMatrix);
-  param.m_rtPart = m_rtClient;
-  if (IsShowScrollBar(FALSE) && IsShowScrollBar(TRUE)) {
-    param.m_pData = &m_rtStatic;
-  }
-  if (!IsEnabled()) {
-    param.m_dwStates = CFWL_PartState_Disabled;
-  }
-  pTheme->DrawBackground(&param);
-}
-void CFWL_ListBoxImp::DrawItems(CFX_Graphics* pGraphics,
-                                IFWL_ThemeProvider* pTheme,
-                                const CFX_Matrix* pMatrix) {
-  FX_FLOAT fPosX = 0.0f;
-  if (m_pHorzScrollBar) {
-    fPosX = m_pHorzScrollBar->GetPos();
-  }
-  FX_FLOAT fPosY = 0.0f;
-  if (m_pVertScrollBar) {
-    fPosY = m_pVertScrollBar->GetPos();
-  }
-  CFX_RectF rtView(m_rtConent);
-  if (m_pHorzScrollBar) {
-    rtView.height -= m_fScorllBarWidth;
-  }
-  if (m_pVertScrollBar) {
-    rtView.width -= m_fScorllBarWidth;
-  }
-  FX_BOOL bMultiCol =
-      m_pProperties->m_dwStyleExes & FWL_STYLEEXT_LTB_MultiColumn;
-  IFWL_ListBoxDP* pData =
-      static_cast<IFWL_ListBoxDP*>(m_pProperties->m_pDataProvider);
-  int32_t iCount = pData->CountItems(m_pInterface);
-  for (int32_t i = 0; i < iCount; i++) {
-    IFWL_ListItem* pItem = pData->GetItem(m_pInterface, i);
-    if (!pItem) {
-      continue;
-    }
-    CFX_RectF rtItem;
-    pData->GetItemRect(m_pInterface, pItem, rtItem);
-    rtItem.Offset(m_rtConent.left - fPosX, m_rtConent.top - fPosY);
-    if (rtItem.bottom() < m_rtConent.top) {
-      continue;
-    }
-    if (rtItem.top >= m_rtConent.bottom()) {
-      break;
-    }
-    if (bMultiCol && rtItem.left > m_rtConent.right()) {
-      break;
-    }
-    if (GetStylesEx() & FWL_STYLEEXT_LTB_OwnerDraw) {
-      CFWL_EvtLtbDrawItem ev;
-      ev.m_pSrcTarget = m_pInterface;
-      ev.m_pGraphics = pGraphics;
-      ev.m_matrix = *pMatrix;
-      ev.m_index = i;
-      ev.m_rect = rtItem;
-      DispatchEvent(&ev);
-    } else {
-      DrawItem(pGraphics, pTheme, pItem, i, rtItem, pMatrix);
-    }
-  }
-}
-void CFWL_ListBoxImp::DrawItem(CFX_Graphics* pGraphics,
-                               IFWL_ThemeProvider* pTheme,
-                               IFWL_ListItem* pItem,
-                               int32_t Index,
-                               const CFX_RectF& rtItem,
-                               const CFX_Matrix* pMatrix) {
-  IFWL_ListBoxDP* pData =
-      static_cast<IFWL_ListBoxDP*>(m_pProperties->m_pDataProvider);
-  uint32_t dwItemStyles = pData->GetItemStyles(m_pInterface, pItem);
-  uint32_t dwPartStates = CFWL_PartState_Normal;
-  if (m_pProperties->m_dwStates & FWL_WGTSTATE_Disabled) {
-    dwPartStates = CFWL_PartState_Disabled;
-  } else if (dwItemStyles & FWL_ITEMSTATE_LTB_Selected) {
-    dwPartStates = CFWL_PartState_Selected;
-  }
-  if (m_pProperties->m_dwStates & FWL_WGTSTATE_Focused &&
-      dwItemStyles & FWL_ITEMSTATE_LTB_Focused) {
-    dwPartStates |= CFWL_PartState_Focused;
-  }
-  {
-    CFWL_ThemeBackground param;
-    param.m_pWidget = m_pInterface;
-    param.m_iPart = CFWL_Part::ListItem;
-    param.m_dwStates = dwPartStates;
-    param.m_pGraphics = pGraphics;
-    param.m_matrix.Concat(*pMatrix);
-    param.m_rtPart = rtItem;
-    param.m_bMaximize = true;
-    CFX_RectF rtFocus(rtItem);
-    param.m_pData = &rtFocus;
-    if (m_pVertScrollBar && !m_pHorzScrollBar &&
-        (dwPartStates & CFWL_PartState_Focused)) {
-      param.m_rtPart.left += 1;
-      param.m_rtPart.width -= (m_fScorllBarWidth + 1);
-      rtFocus.Deflate(0.5, 0.5, 1 + m_fScorllBarWidth, 1);
-    }
-    pTheme->DrawBackground(&param);
-  }
-  {
-    FX_BOOL bHasIcon = GetStylesEx() & FWL_STYLEEXT_LTB_Icon;
-    if (bHasIcon) {
-      CFX_RectF rtDIB;
-      CFX_DIBitmap* pDib = pData->GetItemIcon(m_pInterface, pItem);
-      rtDIB.Set(rtItem.left, rtItem.top, rtItem.height, rtItem.height);
-      if (pDib) {
-        CFWL_ThemeBackground param;
-        param.m_pWidget = m_pInterface;
-        param.m_iPart = CFWL_Part::Icon;
-        param.m_pGraphics = pGraphics;
-        param.m_matrix.Concat(*pMatrix);
-        param.m_rtPart = rtDIB;
-        param.m_bMaximize = true;
-        param.m_pImage = pDib;
-        pTheme->DrawBackground(&param);
-      }
-    }
-    FX_BOOL bHasCheck = GetStylesEx() & FWL_STYLEEXT_LTB_Check;
-    if (bHasCheck) {
-      CFX_RectF rtCheck;
-      rtCheck.Set(rtItem.left, rtItem.top, rtItem.height, rtItem.height);
-      rtCheck.Deflate(2, 2, 2, 2);
-      pData->SetItemCheckRect(m_pInterface, pItem, rtCheck);
-      CFWL_ThemeBackground param;
-      param.m_pWidget = m_pInterface;
-      param.m_iPart = CFWL_Part::Check;
-      param.m_pGraphics = pGraphics;
-      if (GetItemChecked(pItem)) {
-        param.m_dwStates = CFWL_PartState_Checked;
-      } else {
-        param.m_dwStates = CFWL_PartState_Normal;
-      }
-      param.m_matrix.Concat(*pMatrix);
-      param.m_rtPart = rtCheck;
-      param.m_bMaximize = true;
-      pTheme->DrawBackground(&param);
-    }
-    CFX_WideString wsText;
-    pData->GetItemText(m_pInterface, pItem, wsText);
-    if (wsText.GetLength() <= 0) {
-      return;
-    }
-    CFX_RectF rtText(rtItem);
-    rtText.Deflate(kItemTextMargin, kItemTextMargin);
-    if (bHasIcon || bHasCheck) {
-      rtText.Deflate(rtItem.height, 0, 0, 0);
-    }
-    CFWL_ThemeText textParam;
-    textParam.m_pWidget = m_pInterface;
-    textParam.m_iPart = CFWL_Part::ListItem;
-    textParam.m_dwStates = dwPartStates;
-    textParam.m_pGraphics = pGraphics;
-    textParam.m_matrix.Concat(*pMatrix);
-    textParam.m_rtPart = rtText;
-    textParam.m_wsText = wsText;
-    textParam.m_dwTTOStyles = m_dwTTOStyles;
-    textParam.m_iTTOAlign = m_iTTOAligns;
-    textParam.m_bMaximize = true;
-    pTheme->DrawText(&textParam);
-  }
-}
-CFX_SizeF CFWL_ListBoxImp::CalcSize(FX_BOOL bAutoSize) {
-  CFX_SizeF fs;
-  if (!m_pProperties->m_pThemeProvider)
-    return fs;
-
-  GetClientRect(m_rtClient);
-  m_rtConent = m_rtClient;
-  CFX_RectF rtUIMargin;
-  rtUIMargin.Set(0, 0, 0, 0);
-  if (!m_pOuter) {
-    CFX_RectF* pUIMargin = static_cast<CFX_RectF*>(
-        GetThemeCapacity(CFWL_WidgetCapacity::UIMargin));
-    if (pUIMargin) {
-      m_rtConent.Deflate(pUIMargin->left, pUIMargin->top, pUIMargin->width,
-                         pUIMargin->height);
-    }
-  }
-  FX_FLOAT fWidth = 0;
-  if (m_pProperties->m_pThemeProvider->IsCustomizedLayout(m_pInterface)) {
-    IFWL_ListBoxDP* pData =
-        static_cast<IFWL_ListBoxDP*>(m_pProperties->m_pDataProvider);
-    int32_t iCount = pData->CountItems(m_pInterface);
-    for (int32_t i = 0; i < iCount; i++) {
-      IFWL_ListItem* pItem = pData->GetItem(m_pInterface, i);
-      if (!bAutoSize) {
-        CFX_RectF rtItem;
-        rtItem.Set(m_rtClient.left, m_rtClient.top + fs.y, 0, 0);
-        IFWL_ListBoxDP* pBox =
-            static_cast<IFWL_ListBoxDP*>(m_pProperties->m_pDataProvider);
-        pBox->SetItemRect(m_pInterface, pItem, rtItem);
-      }
-      if (fs.x < 0) {
-        fs.x = 0;
-        fWidth = 0;
-      }
-    }
-  } else {
-    fWidth = GetMaxTextWidth();
-    fWidth += 2 * kItemTextMargin;
-    if (!bAutoSize) {
-      FX_FLOAT fActualWidth =
-          m_rtClient.width - rtUIMargin.left - rtUIMargin.width;
-      if (fWidth < fActualWidth) {
-        fWidth = fActualWidth;
-      }
-    }
-    IFWL_ListBoxDP* pData =
-        static_cast<IFWL_ListBoxDP*>(m_pProperties->m_pDataProvider);
-    m_fItemHeight = GetItemHeigt();
-    FX_BOOL bHasIcon;
-    bHasIcon = GetStylesEx() & FWL_STYLEEXT_LTB_Icon;
-    if (bHasIcon) {
-      fWidth += m_fItemHeight;
-    }
-    int32_t iCount = pData->CountItems(m_pInterface);
-    for (int32_t i = 0; i < iCount; i++) {
-      IFWL_ListItem* htem = pData->GetItem(m_pInterface, i);
-      GetItemSize(fs, htem, fWidth, m_fItemHeight, bAutoSize);
-    }
-  }
-  if (bAutoSize) {
-    return fs;
-  }
-  FX_FLOAT iWidth = m_rtClient.width - rtUIMargin.left - rtUIMargin.width;
-  FX_FLOAT iHeight = m_rtClient.height;
-  FX_BOOL bShowVertScr =
-      (m_pProperties->m_dwStyleExes & FWL_STYLEEXT_LTB_ShowScrollBarAlaways) &&
-      (m_pProperties->m_dwStyles & FWL_WGTSTYLE_VScroll);
-  FX_BOOL bShowHorzScr =
-      (m_pProperties->m_dwStyleExes & FWL_STYLEEXT_LTB_ShowScrollBarAlaways) &&
-      (m_pProperties->m_dwStyles & FWL_WGTSTYLE_HScroll);
-  if (!bShowVertScr && m_pProperties->m_dwStyles & FWL_WGTSTYLE_VScroll &&
-      (m_pProperties->m_dwStyleExes & FWL_STYLEEXT_LTB_MultiColumn) == 0) {
-    bShowVertScr = (fs.y > iHeight);
-  }
-  if (!bShowHorzScr && m_pProperties->m_dwStyles & FWL_WGTSTYLE_HScroll) {
-    bShowHorzScr = (fs.x > iWidth);
-  }
-  CFX_SizeF szRange;
-  if (bShowVertScr) {
-    if (!m_pVertScrollBar) {
-      InitScrollBar();
-    }
-    CFX_RectF rtScrollBar;
-    rtScrollBar.Set(m_rtClient.right() - m_fScorllBarWidth, m_rtClient.top,
-                    m_fScorllBarWidth, m_rtClient.height - 1);
-    if (bShowHorzScr) {
-      rtScrollBar.height -= m_fScorllBarWidth;
-    }
-    m_pVertScrollBar->SetWidgetRect(rtScrollBar);
-    szRange.x = 0, szRange.y = fs.y - m_rtConent.height;
-    if (szRange.y < m_fItemHeight) {
-      szRange.y = m_fItemHeight;
-    }
-    m_pVertScrollBar->SetRange(szRange.x, szRange.y);
-    m_pVertScrollBar->SetPageSize(rtScrollBar.height * 9 / 10);
-    m_pVertScrollBar->SetStepSize(m_fItemHeight);
-    FX_FLOAT fPos = m_pVertScrollBar->GetPos();
-    if (fPos < 0) {
-      fPos = 0;
-    }
-    if (fPos > szRange.y) {
-      fPos = szRange.y;
-    }
-    m_pVertScrollBar->SetPos(fPos);
-    m_pVertScrollBar->SetTrackPos(fPos);
-    if ((m_pProperties->m_dwStyleExes & FWL_STYLEEXT_LTB_ShowScrollBarFocus) ==
-            0 ||
-        (m_pProperties->m_dwStates & FWL_WGTSTATE_Focused)) {
-      m_pVertScrollBar->SetStates(FWL_WGTSTATE_Invisible, FALSE);
-    }
-    m_pVertScrollBar->Update();
-  } else if (m_pVertScrollBar) {
-    m_pVertScrollBar->SetPos(0);
-    m_pVertScrollBar->SetTrackPos(0);
-    m_pVertScrollBar->SetStates(FWL_WGTSTATE_Invisible, TRUE);
-  }
-  if (bShowHorzScr) {
-    if (!m_pHorzScrollBar) {
-      InitScrollBar(FALSE);
-    }
-    CFX_RectF rtScrollBar;
-    rtScrollBar.Set(m_rtClient.left, m_rtClient.bottom() - m_fScorllBarWidth,
-                    m_rtClient.width, m_fScorllBarWidth);
-    if (bShowVertScr) {
-      rtScrollBar.width -= m_fScorllBarWidth;
-    }
-    m_pHorzScrollBar->SetWidgetRect(rtScrollBar);
-    szRange.x = 0, szRange.y = fs.x - rtScrollBar.width;
-    m_pHorzScrollBar->SetRange(szRange.x, szRange.y);
-    m_pHorzScrollBar->SetPageSize(fWidth * 9 / 10);
-    m_pHorzScrollBar->SetStepSize(fWidth / 10);
-    FX_FLOAT fPos = m_pHorzScrollBar->GetPos();
-    if (fPos < 0) {
-      fPos = 0;
-    }
-    if (fPos > szRange.y) {
-      fPos = szRange.y;
-    }
-    m_pHorzScrollBar->SetPos(fPos);
-    m_pHorzScrollBar->SetTrackPos(fPos);
-    if ((m_pProperties->m_dwStyleExes & FWL_STYLEEXT_LTB_ShowScrollBarFocus) ==
-            0 ||
-        (m_pProperties->m_dwStates & FWL_WGTSTATE_Focused)) {
-      m_pHorzScrollBar->SetStates(FWL_WGTSTATE_Invisible, FALSE);
-    }
-    m_pHorzScrollBar->Update();
-  } else if (m_pHorzScrollBar) {
-    m_pHorzScrollBar->SetPos(0);
-    m_pHorzScrollBar->SetTrackPos(0);
-    m_pHorzScrollBar->SetStates(FWL_WGTSTATE_Invisible, TRUE);
-  }
-  if (bShowVertScr && bShowHorzScr) {
-    m_rtStatic.Set(m_rtClient.right() - m_fScorllBarWidth,
-                   m_rtClient.bottom() - m_fScorllBarWidth, m_fScorllBarWidth,
-                   m_fScorllBarWidth);
-  }
-  return fs;
-}
-void CFWL_ListBoxImp::GetItemSize(CFX_SizeF& size,
-                                  IFWL_ListItem* pItem,
-                                  FX_FLOAT fWidth,
-                                  FX_FLOAT fItemHeight,
-                                  FX_BOOL bAutoSize) {
-  if (m_pProperties->m_dwStyleExes & FWL_STYLEEXT_LTB_MultiColumn) {
-  } else {
-    if (!bAutoSize) {
-      CFX_RectF rtItem;
-      rtItem.Set(0, size.y, fWidth, fItemHeight);
-      IFWL_ListBoxDP* pData =
-          static_cast<IFWL_ListBoxDP*>(m_pProperties->m_pDataProvider);
-      pData->SetItemRect(m_pInterface, pItem, rtItem);
-    }
-    size.x = fWidth;
-    size.y += fItemHeight;
-  }
-}
-FX_FLOAT CFWL_ListBoxImp::GetMaxTextWidth() {
-  FX_FLOAT fRet = 0.0f;
-  IFWL_ListBoxDP* pData =
-      static_cast<IFWL_ListBoxDP*>(m_pProperties->m_pDataProvider);
-  int32_t iCount = pData->CountItems(m_pInterface);
-  for (int32_t i = 0; i < iCount; i++) {
-    IFWL_ListItem* pItem = pData->GetItem(m_pInterface, i);
-    if (!pItem) {
-      continue;
-    }
-    CFX_WideString wsText;
-    pData->GetItemText(m_pInterface, pItem, wsText);
-    CFX_SizeF sz = CalcTextSize(wsText, m_pProperties->m_pThemeProvider);
-    if (sz.x > fRet) {
-      fRet = sz.x;
-    }
-  }
-  return fRet;
-}
-FX_FLOAT CFWL_ListBoxImp::GetScrollWidth() {
-  FX_FLOAT* pfWidth = static_cast<FX_FLOAT*>(
-      GetThemeCapacity(CFWL_WidgetCapacity::ScrollBarWidth));
-  if (!pfWidth)
-    return 0;
-  return *pfWidth;
-}
-FX_FLOAT CFWL_ListBoxImp::GetItemHeigt() {
-  FX_FLOAT* pfFont =
-      static_cast<FX_FLOAT*>(GetThemeCapacity(CFWL_WidgetCapacity::FontSize));
-  if (!pfFont)
-    return 20;
-  return *pfFont + 2 * kItemTextMargin;
-}
-void CFWL_ListBoxImp::InitScrollBar(FX_BOOL bVert) {
-  if ((bVert && m_pVertScrollBar) || (!bVert && m_pHorzScrollBar)) {
-    return;
-  }
-  CFWL_WidgetImpProperties prop;
-  prop.m_dwStyleExes = bVert ? FWL_STYLEEXT_SCB_Vert : FWL_STYLEEXT_SCB_Horz;
-  prop.m_dwStates = FWL_WGTSTATE_Invisible;
-  prop.m_pParent = m_pInterface;
-  prop.m_pThemeProvider = m_pScrollBarTP;
-  IFWL_ScrollBar* pScrollBar = IFWL_ScrollBar::Create(prop, m_pInterface);
-  pScrollBar->Initialize();
-  (bVert ? &m_pVertScrollBar : &m_pHorzScrollBar)->reset(pScrollBar);
-}
-
-FX_BOOL CFWL_ListBoxImp::IsShowScrollBar(FX_BOOL bVert) {
-  IFWL_ScrollBar* pScrollbar =
-      bVert ? m_pVertScrollBar.get() : m_pHorzScrollBar.get();
-  if (!pScrollbar || (pScrollbar->GetStates() & FWL_WGTSTATE_Invisible)) {
-    return FALSE;
-  }
-  return !(m_pProperties->m_dwStyleExes &
-           FWL_STYLEEXT_LTB_ShowScrollBarFocus) ||
-         (m_pProperties->m_dwStates & FWL_WGTSTATE_Focused);
-}
-void CFWL_ListBoxImp::ProcessSelChanged() {
-  CFWL_EvtLtbSelChanged selEvent;
-  selEvent.m_pSrcTarget = m_pInterface;
-  CFX_Int32Array arrSels;
-  int32_t iCount = CountSelItems();
-  for (int32_t i = 0; i < iCount; i++) {
-    IFWL_ListItem* item = GetSelItem(i);
-    if (!item) {
-      continue;
-    }
-    selEvent.iarraySels.Add(i);
-  }
-  DispatchEvent(&selEvent);
-}
-
-CFWL_ListBoxImpDelegate::CFWL_ListBoxImpDelegate(CFWL_ListBoxImp* pOwner)
-    : m_pOwner(pOwner) {}
-
-void CFWL_ListBoxImpDelegate::OnProcessMessage(CFWL_Message* pMessage) {
-  if (!pMessage)
-    return;
-  if (!m_pOwner->IsEnabled())
-    return;
-
-  CFWL_MessageType dwMsgCode = pMessage->GetClassID();
-  switch (dwMsgCode) {
-    case CFWL_MessageType::SetFocus: {
-      OnFocusChanged(pMessage, TRUE);
-      break;
-    }
-    case CFWL_MessageType::KillFocus: {
-      OnFocusChanged(pMessage, FALSE);
-      break;
-    }
-    case CFWL_MessageType::Mouse: {
-      CFWL_MsgMouse* pMsg = static_cast<CFWL_MsgMouse*>(pMessage);
-      switch (pMsg->m_dwCmd) {
-        case FWL_MouseCommand::LeftButtonDown: {
-          OnLButtonDown(pMsg);
-          break;
-        }
-        case FWL_MouseCommand::LeftButtonUp: {
-          OnLButtonUp(pMsg);
-          break;
-        }
-        default:
-          break;
-      }
-      break;
-    }
-    case CFWL_MessageType::MouseWheel: {
-      OnMouseWheel(static_cast<CFWL_MsgMouseWheel*>(pMessage));
-      break;
-    }
-    case CFWL_MessageType::Key: {
-      CFWL_MsgKey* pMsg = static_cast<CFWL_MsgKey*>(pMessage);
-      if (pMsg->m_dwCmd == FWL_KeyCommand::KeyDown)
-        OnKeyDown(pMsg);
-      break;
-    }
-    default: {
-      break;
-    }
-  }
-  CFWL_WidgetImpDelegate::OnProcessMessage(pMessage);
-}
-
-void CFWL_ListBoxImpDelegate::OnProcessEvent(CFWL_Event* pEvent) {
-  if (!pEvent)
-    return;
-  if (pEvent->GetClassID() != CFWL_EventType::Scroll)
-    return;
-
-  IFWL_Widget* pSrcTarget = pEvent->m_pSrcTarget;
-  if ((pSrcTarget == m_pOwner->m_pVertScrollBar.get() &&
-       m_pOwner->m_pVertScrollBar) ||
-      (pSrcTarget == m_pOwner->m_pHorzScrollBar.get() &&
-       m_pOwner->m_pHorzScrollBar)) {
-    CFWL_EvtScroll* pScrollEvent = static_cast<CFWL_EvtScroll*>(pEvent);
-    OnScroll(static_cast<IFWL_ScrollBar*>(pSrcTarget),
-             pScrollEvent->m_iScrollCode, pScrollEvent->m_fPos);
-  }
-}
-
-void CFWL_ListBoxImpDelegate::OnDrawWidget(CFX_Graphics* pGraphics,
-                                           const CFX_Matrix* pMatrix) {
-  m_pOwner->DrawWidget(pGraphics, pMatrix);
-}
-
-void CFWL_ListBoxImpDelegate::OnFocusChanged(CFWL_Message* pMsg, FX_BOOL bSet) {
-  if (m_pOwner->GetStylesEx() & FWL_STYLEEXT_LTB_ShowScrollBarFocus) {
-    if (m_pOwner->m_pVertScrollBar) {
-      m_pOwner->m_pVertScrollBar->SetStates(FWL_WGTSTATE_Invisible, !bSet);
-    }
-    if (m_pOwner->m_pHorzScrollBar) {
-      m_pOwner->m_pHorzScrollBar->SetStates(FWL_WGTSTATE_Invisible, !bSet);
-    }
-  }
-  if (bSet) {
-    m_pOwner->m_pProperties->m_dwStates |= (FWL_WGTSTATE_Focused);
-  } else {
-    m_pOwner->m_pProperties->m_dwStates &= ~(FWL_WGTSTATE_Focused);
-  }
-  m_pOwner->Repaint(&m_pOwner->m_rtClient);
-}
-void CFWL_ListBoxImpDelegate::OnLButtonDown(CFWL_MsgMouse* pMsg) {
-  m_pOwner->m_bLButtonDown = TRUE;
-  if ((m_pOwner->m_pProperties->m_dwStates & FWL_WGTSTATE_Focused) == 0) {
-    m_pOwner->SetFocus(TRUE);
-  }
-  IFWL_ListItem* pItem = m_pOwner->GetItemAtPoint(pMsg->m_fx, pMsg->m_fy);
-  if (!pItem) {
-    return;
-  }
-  if (m_pOwner->m_pProperties->m_dwStyleExes &
-      FWL_STYLEEXT_LTB_MultiSelection) {
-    if (pMsg->m_dwFlags & FWL_KEYFLAG_Ctrl) {
-      FX_BOOL bSelected = m_pOwner->IsItemSelected(pItem);
-      m_pOwner->SetSelectionDirect(pItem, !bSelected);
-      m_pOwner->m_hAnchor = pItem;
-    } else if (pMsg->m_dwFlags & FWL_KEYFLAG_Shift) {
-      if (m_pOwner->m_hAnchor) {
-        m_pOwner->SetSelection(m_pOwner->m_hAnchor, pItem, TRUE);
-      } else {
-        m_pOwner->SetSelectionDirect(pItem, TRUE);
-      }
-    } else {
-      m_pOwner->SetSelection(pItem, pItem, TRUE);
-      m_pOwner->m_hAnchor = pItem;
-    }
-  } else {
-    m_pOwner->SetSelection(pItem, pItem, TRUE);
-  }
-  if (m_pOwner->m_pProperties->m_dwStyleExes & FWL_STYLEEXT_LTB_Check) {
-    IFWL_ListItem* hSelectedItem =
-        m_pOwner->GetItemAtPoint(pMsg->m_fx, pMsg->m_fy);
-    CFX_RectF rtCheck;
-    m_pOwner->GetItemCheckRect(hSelectedItem, rtCheck);
-    FX_BOOL bChecked = m_pOwner->GetItemChecked(pItem);
-    if (rtCheck.Contains(pMsg->m_fx, pMsg->m_fy)) {
-      if (bChecked) {
-        m_pOwner->SetItemChecked(pItem, FALSE);
-      } else {
-        m_pOwner->SetItemChecked(pItem, TRUE);
-      }
-      m_pOwner->Update();
-    }
-  }
-  m_pOwner->SetFocusItem(pItem);
-  m_pOwner->ScrollToVisible(pItem);
-  m_pOwner->SetGrab(TRUE);
-  m_pOwner->ProcessSelChanged();
-  m_pOwner->Repaint(&m_pOwner->m_rtClient);
-}
-void CFWL_ListBoxImpDelegate::OnLButtonUp(CFWL_MsgMouse* pMsg) {
-  if (m_pOwner->m_bLButtonDown) {
-    m_pOwner->m_bLButtonDown = FALSE;
-    m_pOwner->SetGrab(FALSE);
-    DispatchSelChangedEv();
-  }
-}
-void CFWL_ListBoxImpDelegate::OnMouseWheel(CFWL_MsgMouseWheel* pMsg) {
-  if (!m_pOwner->IsShowScrollBar(TRUE)) {
-    return;
-  }
-  IFWL_WidgetDelegate* pDelegate =
-      m_pOwner->m_pVertScrollBar->SetDelegate(nullptr);
-  pDelegate->OnProcessMessage(pMsg);
-}
-void CFWL_ListBoxImpDelegate::OnKeyDown(CFWL_MsgKey* pMsg) {
-  uint32_t dwKeyCode = pMsg->m_dwKeyCode;
-  switch (dwKeyCode) {
-    case FWL_VKEY_Tab:
-    case FWL_VKEY_Up:
-    case FWL_VKEY_Down:
-    case FWL_VKEY_Home:
-    case FWL_VKEY_End: {
-      IFWL_ListItem* pItem = m_pOwner->GetFocusedItem();
-      pItem = m_pOwner->GetItem(pItem, dwKeyCode);
-      FX_BOOL bShift = pMsg->m_dwFlags & FWL_KEYFLAG_Shift;
-      FX_BOOL bCtrl = pMsg->m_dwFlags & FWL_KEYFLAG_Ctrl;
-      OnVK(pItem, bShift, bCtrl);
-      DispatchSelChangedEv();
-      m_pOwner->ProcessSelChanged();
-      break;
-    }
-    default: {}
-  }
-}
-void CFWL_ListBoxImpDelegate::OnVK(IFWL_ListItem* pItem,
-                                   FX_BOOL bShift,
-                                   FX_BOOL bCtrl) {
-  if (!pItem) {
-    return;
-  }
-  if (m_pOwner->m_pProperties->m_dwStyleExes &
-      FWL_STYLEEXT_LTB_MultiSelection) {
-    if (bCtrl) {
-    } else if (bShift) {
-      if (m_pOwner->m_hAnchor) {
-        m_pOwner->SetSelection(m_pOwner->m_hAnchor, pItem, TRUE);
-      } else {
-        m_pOwner->SetSelectionDirect(pItem, TRUE);
-      }
-    } else {
-      m_pOwner->SetSelection(pItem, pItem, TRUE);
-      m_pOwner->m_hAnchor = pItem;
-    }
-  } else {
-    m_pOwner->SetSelection(pItem, pItem, TRUE);
-  }
-  m_pOwner->SetFocusItem(pItem);
-  m_pOwner->ScrollToVisible(pItem);
-  {
-    CFX_RectF rtInvalidate;
-    rtInvalidate.Set(0, 0, m_pOwner->m_pProperties->m_rtWidget.width,
-                     m_pOwner->m_pProperties->m_rtWidget.height);
-    m_pOwner->Repaint(&rtInvalidate);
-  }
-}
-FX_BOOL CFWL_ListBoxImpDelegate::OnScroll(IFWL_ScrollBar* pScrollBar,
-                                          uint32_t dwCode,
-                                          FX_FLOAT fPos) {
-  CFX_SizeF fs;
-  pScrollBar->GetRange(fs.x, fs.y);
-  FX_FLOAT iCurPos = pScrollBar->GetPos();
-  FX_FLOAT fStep = pScrollBar->GetStepSize();
-  switch (dwCode) {
-    case FWL_SCBCODE_Min: {
-      fPos = fs.x;
-      break;
-    }
-    case FWL_SCBCODE_Max: {
-      fPos = fs.y;
-      break;
-    }
-    case FWL_SCBCODE_StepBackward: {
-      fPos -= fStep;
-      if (fPos < fs.x + fStep / 2) {
-        fPos = fs.x;
-      }
-      break;
-    }
-    case FWL_SCBCODE_StepForward: {
-      fPos += fStep;
-      if (fPos > fs.y - fStep / 2) {
-        fPos = fs.y;
-      }
-      break;
-    }
-    case FWL_SCBCODE_PageBackward: {
-      fPos -= pScrollBar->GetPageSize();
-      if (fPos < fs.x) {
-        fPos = fs.x;
-      }
-      break;
-    }
-    case FWL_SCBCODE_PageForward: {
-      fPos += pScrollBar->GetPageSize();
-      if (fPos > fs.y) {
-        fPos = fs.y;
-      }
-      break;
-    }
-    case FWL_SCBCODE_Pos:
-    case FWL_SCBCODE_TrackPos:
-      break;
-    case FWL_SCBCODE_EndScroll:
-      return FALSE;
-  }
-  if (iCurPos != fPos) {
-    pScrollBar->SetPos(fPos);
-    pScrollBar->SetTrackPos(fPos);
-    m_pOwner->Repaint(&m_pOwner->m_rtClient);
-  }
-  return TRUE;
-}
-void CFWL_ListBoxImpDelegate::DispatchSelChangedEv() {
-  CFWL_EvtLtbSelChanged ev;
-  ev.m_pSrcTarget = m_pOwner->m_pInterface;
-  m_pOwner->DispatchEvent(&ev);
-}