Use enum class for subtypes of CPDF_Annot.

fpdfsdk/cpdfsdk_xfawidgethandler.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 "fpdfsdk/include/cpdfsdk_xfawidgethandler.h"
 
 #include "core/fpdfdoc/include/cpdf_interform.h"
 #include "fpdfsdk/fpdfxfa/include/fpdfxfa_doc.h"
 #include "fpdfsdk/include/cpdfsdk_annot.h"
 #include "fpdfsdk/include/cpdfsdk_interform.h"
 #include "fpdfsdk/include/cpdfsdk_xfawidget.h"
 #include "fpdfsdk/include/fsdk_mgr.h"
 #include "xfa/fxfa/include/fxfa_basic.h"
 #include "xfa/fxfa/include/xfa_ffdocview.h"
 #include "xfa/fxfa/include/xfa_ffpageview.h"
 #include "xfa/fxfa/include/xfa_ffwidget.h"
 #include "xfa/fxfa/include/xfa_ffwidgethandler.h"
 #include "xfa/fxgraphics/include/cfx_graphics.h"
 #include "xfa/fwl/core/include/fwl_widgethit.h"
 
 CPDFSDK_XFAWidgetHandler::CPDFSDK_XFAWidgetHandler(CPDFDoc_Environment* pApp)
     : m_pApp(pApp) {}
 
 CPDFSDK_XFAWidgetHandler::~CPDFSDK_XFAWidgetHandler() {}
 
-CFX_ByteString CPDFSDK_XFAWidgetHandler::GetType() {
-  return FSDK_XFAWIDGET_TYPENAME;
-}
-
 FX_BOOL CPDFSDK_XFAWidgetHandler::CanAnswer(CPDFSDK_Annot* pAnnot) {
   return !!pAnnot->GetXFAWidget();
 }
 
 CPDFSDK_Annot* CPDFSDK_XFAWidgetHandler::NewAnnot(CPDF_Annot* pAnnot,
                                                   CPDFSDK_PageView* pPage) {
   return nullptr;
 }
 
 CPDFSDK_Annot* CPDFSDK_XFAWidgetHandler::NewAnnot(CXFA_FFWidget* pAnnot,
@@ skipping 335 matching lines @@
     dwFWLFlag |= FWL_KEYFLAG_MButton;
   if (dwFlag & FWL_EVENTFLAG_RightButtonDown)
     dwFWLFlag |= FWL_KEYFLAG_RButton;
   if (dwFlag & FWL_EVENTFLAG_ShiftKey)
     dwFWLFlag |= FWL_KEYFLAG_Shift;
   if (dwFlag & FWL_EVENTFLAG_AltKey)
     dwFWLFlag |= FWL_KEYFLAG_Alt;
 
   return dwFWLFlag;
 }