src/Blackboard/ProxyBlackboardListener.hpp

   1 /*
   2 Copyright_License {
   3
   4   XCSoar Glide Computer - http://www.xcsoar.org/
   5   Copyright (C) 2000-2013 The XCSoar Project
   6   A detailed list of copyright holders can be found in the file "AUTHORS".
   7
   8   This program is free software; you can redistribute it and/or
   9   modify it under the terms of the GNU General Public License
  10   as published by the Free Software Foundation; either version 2
  11   of the License, or (at your option) any later version.
  12
  13   This program is distributed in the hope that it will be useful,
  14   but WITHOUT ANY WARRANTY; without even the implied warranty of
  15   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16   GNU General Public License for more details.
  17
  18   You should have received a copy of the GNU General Public License
  19   along with this program; if not, write to the Free Software
  20   Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  21 }
  22 */
  23
  24 #ifndef XCSOAR_PROXY_BLACKBOARD_LISTENER_HPP
  25 #define XCSOAR_PROXY_BLACKBOARD_LISTENER_HPP
  26
  27 #include "BlackboardListener.hpp"
  28 #include "RateLimiter.hpp"
  29
  30 /**
  31  * A #BlackboardListener that forwards all calls to another listener.
  32  * Use this as a base class for specialised implementations.
  33  */
  34 class ProxyBlackboardListener : public BlackboardListener {
  35 protected:
  36   BlackboardListener &next;
  37
  38 public:
  39   ProxyBlackboardListener(BlackboardListener &_next):next(_next) {}
  40
  41 private:
  42   virtual void OnGPSUpdate(const MoreData &basic);
  43
  44   virtual void OnCalculatedUpdate(const MoreData &basic,
  45                                   const DerivedInfo &calculated);
  46
  47   virtual void OnComputerSettingsUpdate(const ComputerSettings &settings);
  48
  49   virtual void OnUISettingsUpdate(const UISettings &settings);
  50 };
  51
  52 #endif