Cleanup FWL Event and Message code.

xfa/fwl/core/cfwl_comboboxproxy.cpp

 // Copyright 2016 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/cfwl_comboboxproxy.h"
 
 #include <memory>
 #include <utility>
@@ skipping 13 matching lines @@
       m_bLButtonDown(false),
       m_bLButtonUpSelf(false),
       m_pComboBox(pComboBox) {}
 
 CFWL_ComboBoxProxy::~CFWL_ComboBoxProxy() {}
 
 void CFWL_ComboBoxProxy::OnProcessMessage(CFWL_Message* pMessage) {
   if (!pMessage)
     return;
 
-  switch (pMessage->GetClassID()) {
-    case CFWL_MessageType::Mouse: {
+  switch (pMessage->GetType()) {
+    case CFWL_Message::Type::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::KillFocus:
+    case CFWL_Message::Type::KillFocus:
       OnFocusChanged(pMessage, false);
       break;
-    case CFWL_MessageType::SetFocus:
+    case CFWL_Message::Type::SetFocus:
       OnFocusChanged(pMessage, true);
       break;
     default:
       break;
   }
   CFWL_Widget::OnProcessMessage(pMessage);
 }
 
 void CFWL_ComboBoxProxy::OnDrawWidget(CFX_Graphics* pGraphics,
                                       const CFX_Matrix* pMatrix) {
@@ skipping 47 matching lines @@
 }
 
 void CFWL_ComboBoxProxy::OnFocusChanged(CFWL_Message* pMessage, bool bSet) {
   if (bSet)
     return;
 
   CFWL_MsgKillFocus* pMsg = static_cast<CFWL_MsgKillFocus*>(pMessage);
   if (!pMsg->m_pSetFocus)
     m_pComboBox->ShowDropList(false);
 }