Remove CLASSHASH defines in favour of an enum class.

xfa/fwl/theme/cfwl_edittp.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/fwl/theme/cfwl_edittp.h"
 
 #include "xfa/fwl/basewidget/ifwl_edit.h"
 #include "xfa/fwl/core/cfwl_themebackground.h"
 #include "xfa/fwl/core/ifwl_widget.h"
 #include "xfa/fxgraphics/cfx_color.h"
 #include "xfa/fxgraphics/cfx_path.h"
 
 CFWL_EditTP::CFWL_EditTP() {}
 CFWL_EditTP::~CFWL_EditTP() {}
 
-FX_BOOL CFWL_EditTP::IsValidWidget(IFWL_Widget* pWidget) {
-  if (!pWidget)
-    return FALSE;
-  return pWidget->GetClassID() == FWL_CLASSHASH_Edit;
+bool CFWL_EditTP::IsValidWidget(IFWL_Widget* pWidget) {
+  return pWidget && pWidget->GetClassID() == FWL_Type::Edit;
 }
+
 FX_BOOL CFWL_EditTP::DrawBackground(CFWL_ThemeBackground* pParams) {
   switch (pParams->m_iPart) {
     case CFWL_Part::Border: {
       DrawBorder(pParams->m_pGraphics, &pParams->m_rtPart, &pParams->m_matrix);
       break;
     }
     case CFWL_Part::Edge: {
       DrawEdge(pParams->m_pGraphics, pParams->m_pWidget->GetStyles(),
                &pParams->m_rtPart, &pParams->m_matrix);
       break;
@@ skipping 45 matching lines @@
   return TRUE;
 }
 FWL_Error CFWL_EditTP::Initialize() {
   InitTTO();
   return CFWL_WidgetTP::Initialize();
 }
 FWL_Error CFWL_EditTP::Finalize() {
   FinalizeTTO();
   return CFWL_WidgetTP::Finalize();
 }