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 <abstract/aacore.h>
  23
  24 #include "nsCOMPtr.h"
  25 #include "nsWeakReference.h"
  26
  27 /* Unfrozen API */
  28
  29 /* Project includes */
  30 #include <abstract/base/aaIBalance.h>
  31 #include <abstract/storage/aaILoadQuery.h>
  32 #include "aaBalanceCounter.h"
  33
  34 NS_IMPL_QUERY_INTERFACE2(aaBalanceCounter,
  35                          nsISupportsWeakReference,
  36                          aaILoadObserver);
  37
  38 NS_IMETHODIMP_(nsrefcnt)
  39 aaBalanceCounter::AddRef(void)
  40 {
  41   return 1;
  42 }
  43
  44 NS_IMETHODIMP_(nsrefcnt)
  45 aaBalanceCounter::Release(void)
  46 {
  47   return 1;
  48 }
  49
  50 NS_IMETHODIMP
  51 aaBalanceCounter::ObserveLoad(aaIDataNode *aNode)
  52 {
  53   nsresult rv;
  54   nsCOMPtr<aaIBalance> balance = do_QueryInterface(aNode, &rv);
  55   NS_ENSURE_SUCCESS(rv, rv);
  56
  57   if (balance->PickSide())
  58     mAssets += balance->PickValue();
  59   else
  60     mLiabilities += balance->PickValue();
  61   return NS_OK;
  62 }