Several pure virtual IFWL_Adapter* classes not implemented.

xfa/src/fwl/src/basewidget/fwl_comboboximp.cpp

 // 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/src/foxitlib.h"
 #include "xfa/src/fwl/src/core/include/fwl_threadimp.h"
 #include "xfa/src/fwl/src/core/include/fwl_appimp.h"
 #include "xfa/src/fwl/src/core/include/fwl_targetimp.h"
@@ skipping 1768 matching lines @@
   CFX_RectF rtWidget;
   m_pForm->GetWidgetRect(rtWidget);
   rtWidget.left = rtWidget.top = 0;
   if (rtWidget.Contains(pMsg->m_fx, pMsg->m_fy)) {
     m_bLButtonDown = TRUE;
     pDriver->SetGrab(m_pForm, TRUE);
   } else {
     m_bLButtonDown = FALSE;
     pDriver->SetGrab(m_pForm, FALSE);
     m_pComboBox->ShowDropList(FALSE);
-    return;
   }
-  IFWL_AdapterNative* pNative = FWL_GetAdapterNative();
-  IFWL_AdapterCursorMgr* pCursorMgr = pNative->GetCursorMgr();
-  FWL_HCURSOR hCursor = pCursorMgr->GetSystemCursor(FWL_CURSORTYPE_SizeNS);

[Tom Sepez, 2016/02/09 00:20:32]

segv.

-  pCursorMgr->SetCursor(hCursor);
-  pCursorMgr->ShowCursor(TRUE);
-  m_pForm->TransformTo(NULL, pMsg->m_fx, pMsg->m_fy);
-  m_fStartPos = pMsg->m_fy;
 }
 void CFWL_ComboProxyImpDelegate::OnLButtonUp(CFWL_MsgMouse* pMsg) {
   m_bLButtonDown = FALSE;
   IFWL_NoteThread* pThread = m_pForm->GetOwnerThread();
   if (!pThread)
     return;
   CFWL_NoteDriver* pDriver =
       static_cast<CFWL_NoteDriver*>(pThread->GetNoteDriver());
   pDriver->SetGrab(m_pForm, FALSE);
   if (m_bLButtonUpSelf) {
     CFX_RectF rect;
     m_pForm->GetWidgetRect(rect);
     rect.left = rect.top = 0;
     if (!rect.Contains(pMsg->m_fx, pMsg->m_fy) &&
         m_pComboBox->IsDropListShowed()) {
       m_pComboBox->ShowDropList(FALSE);
     }
   } else {
     m_bLButtonUpSelf = TRUE;
   }
 }
 void CFWL_ComboProxyImpDelegate::OnMouseMove(CFWL_MsgMouse* pMsg) {
-  IFWL_AdapterNative* pNative = FWL_GetAdapterNative();
-  IFWL_AdapterCursorMgr* pCursorMgr = pNative->GetCursorMgr();
-  FWL_CURSORTYPE cursorType = FWL_CURSORTYPE_Arrow;
-  if (m_pComboBox->m_rtHandler.Contains(pMsg->m_fx, pMsg->m_fy)) {
-    cursorType = FWL_CURSORTYPE_SizeNS;
-  }
-  FWL_HCURSOR hCursor = pCursorMgr->GetSystemCursor(cursorType);

[Tom Sepez, 2016/02/09 00:20:32]

segv.

-  pCursorMgr->SetCursor(hCursor);
-  pCursorMgr->ShowCursor(TRUE);
-  if (!m_bLButtonDown) {
-    return;
-  }
-  m_pForm->TransformTo(NULL, pMsg->m_fx, pMsg->m_fy);
-  FX_FLOAT fChanged = pMsg->m_fy - m_fStartPos;
-  if (m_pComboBox->m_bUpFormHandler) {
-    fChanged = m_fStartPos - pMsg->m_fy;
-  }
-  if (m_pComboBox->m_rtList.height + fChanged < m_pComboBox->m_fItemHeight) {
-    return;
-  }
-  m_pComboBox->m_rtList.height += fChanged;
-  m_pComboBox->m_rtProxy.height += fChanged;
-  if (m_pComboBox->m_bUpFormHandler) {
-    m_pComboBox->m_rtProxy.top -= fChanged;
-    m_pComboBox->m_rtHandler.Set(0, 0, m_pComboBox->m_rtList.width,
-                                 m_pComboBox->m_fComboFormHandler);
-  } else {
-    m_pComboBox->m_rtHandler.Set(0, m_pComboBox->m_rtList.height,
-                                 m_pComboBox->m_rtList.width,
-                                 m_pComboBox->m_fComboFormHandler);
-  }
-  m_pForm->SetWidgetRect(m_pComboBox->m_rtProxy);
-  m_pComboBox->m_pListBox->SetWidgetRect(m_pComboBox->m_rtList);
-  m_pComboBox->m_pListBox->Update();
-  m_fStartPos = pMsg->m_fy;
 }
 void CFWL_ComboProxyImpDelegate::OnDeactive(CFWL_MsgDeactivate* pMsg) {
   m_pComboBox->ShowDropList(FALSE);
 }
 void CFWL_ComboProxyImpDelegate::OnFocusChanged(CFWL_MsgKillFocus* pMsg,
                                                 FX_BOOL bSet) {
   if (!bSet) {
     if (pMsg->m_pSetFocus == NULL) {
       m_pComboBox->ShowDropList(FALSE);
     }
   }
 }