Remove CLASSHASH defines in favour of an enum class.

xfa/fwl/theme/cfwl_carettp.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_carettp.h"
 
 #include "xfa/fwl/basewidget/ifwl_caret.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_CaretTP::CFWL_CaretTP() {}
 CFWL_CaretTP::~CFWL_CaretTP() {}
 
-FX_BOOL CFWL_CaretTP::IsValidWidget(IFWL_Widget* pWidget) {
-  if (!pWidget)
-    return FALSE;
-  return pWidget->GetClassID() == FWL_CLASSHASH_Caret;
+bool CFWL_CaretTP::IsValidWidget(IFWL_Widget* pWidget) {
+  return pWidget && pWidget->GetClassID() == FWL_Type::Caret;
 }
+
 FX_BOOL CFWL_CaretTP::DrawBackground(CFWL_ThemeBackground* pParams) {
   if (!pParams)
     return FALSE;
   switch (pParams->m_iPart) {
     case CFWL_Part::Background: {
       if (!(pParams->m_dwStates & CFWL_PartState_HightLight)) {
         return TRUE;
       }
       DrawCaretBK(pParams->m_pGraphics, pParams->m_dwStates,
                   &(pParams->m_rtPart), (CFX_Color*)pParams->m_pData,
@@ skipping 12 matching lines @@
                                CFX_Matrix* pMatrix) {
   CFX_Path path;
   path.Create();
   CFX_Color crFilltemp;
   crFill ? crFilltemp = *crFill : crFilltemp = ArgbEncode(255, 0, 0, 0);
   CFX_RectF rect = *pRect;
   path.AddRectangle(rect.left, rect.top, rect.width, rect.height);
   pGraphics->SetFillColor(&crFilltemp);
   pGraphics->FillPath(&path, FXFILL_WINDING, pMatrix);
 }