Simplify XFA event handling.

xfa/fxfa/app/xfa_fffield.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/fxfa/app/xfa_fffield.h"
 
 #include "xfa/fwl/basewidget/ifwl_edit.h"
 #include "xfa/fwl/core/cfwl_message.h"
@@ skipping 748 matching lines @@
             wsMessage += L"\r\n";
           }
           CFX_WideString wsWarning;
           pAppProvider->LoadString(XFA_IDS_ModifyField, wsWarning);
           wsMessage += wsWarning;
           CFX_WideString wsTitle;
           pAppProvider->LoadString(XFA_IDS_CalcOverride, wsTitle);
           if (pAppProvider->MsgBox(wsMessage.AsStringC(), wsTitle.AsStringC(),
                                    XFA_MBICON_Warning,
                                    XFA_MB_YesNo) == XFA_IDYes) {
-            pAcc->GetNode()->SetFlag(XFA_NODEFLAG_UserInteractive, TRUE, FALSE);
+            pAcc->GetNode()->SetFlag(XFA_NODEFLAG_UserInteractive, false);
             return 1;
           }
         }
         return 0;
       }
       case XFA_ATTRIBUTEENUM_Ignore:
         return 0;
       case XFA_ATTRIBUTEENUM_Disabled:
-        pAcc->GetNode()->SetFlag(XFA_NODEFLAG_UserInteractive, TRUE, FALSE);
+        pAcc->GetNode()->SetFlag(XFA_NODEFLAG_UserInteractive, false);
       default:
         return 1;
     }
   }
   return 1;
 }
 FX_BOOL CXFA_FFField::CommitData() {
   return FALSE;
 }
 FX_BOOL CXFA_FFField::IsDataChanged() {
@@ skipping 41 matching lines @@
       break;
     }
     default: {}
   }
   return FWL_ERR_Succeeded;
 }
 FWL_ERR CXFA_FFField::OnDrawWidget(CFX_Graphics* pGraphics,
                                    const CFX_Matrix* pMatrix) {
   return FWL_ERR_Succeeded;
 }