report/aaBalanceCounter.cpp

   1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* vim:set ts=2 sw=2 sts=2 et cindent tw=79 ft=cpp: */
   3 /*
   4  * Copyright (C) 2007 Sergey Yanovich <ynvich@gmail.com>
   5  *
   6  * This program is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU General Public License as
   8  * published by the Free Software Foundation; either version 2 of the
   9  * License, or (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public
  17  * License along with this program; if not, write to the
  18  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  19  * Boston, MA 02111-1307, USA.
  20  */
  21
  22 #include "xpcom-config.h"
  23
  24 #include "nsCOMPtr.h"
  25 #include "nsWeakReference.h"
  26
  27 /* Unfrozen API */
  28
  29 /* Project includes */
  30 #include "aaIBalance.h"
  31 #include "aaBalanceCounter.h"
  32
  33 NS_IMPL_QUERY_INTERFACE2(aaBalanceCounter,
  34                          nsISupportsWeakReference,
  35                          aaILoadObserver)
  36
  37 NS_IMETHODIMP_(nsrefcnt)
  38 aaBalanceCounter::AddRef(void)
  39 {
  40   return 1;
  41 }
  42
  43 NS_IMETHODIMP_(nsrefcnt)
  44 aaBalanceCounter::Release(void)
  45 {
  46   return 1;
  47 }
  48
  49 NS_IMETHODIMP
  50 aaBalanceCounter::ObserveLoad(aaIDataNode *aNode)
  51 {
  52   nsresult rv;
  53   nsCOMPtr<aaIBalance> balance = do_QueryInterface(aNode, &rv);
  54   NS_ENSURE_SUCCESS(rv, rv);
  55
  56   if (balance->PickSide())
  57     mAssets += balance->PickValue();
  58   else
  59     mLiabilities += balance->PickValue();
  60   return NS_OK;
  61 }