src/Input/TaskEventObserver.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
  25 #ifndef XCSOAR_TASK_EVENT_OBSERVER_HPP
  26 #define XCSOAR_TASK_EVENT_OBSERVER_HPP
  27
  28 #include "Compiler.h"
  29
  30 class TaskManager;
  31
  32 /**
  33  * This class scans a #TaskManager periodically for changes and
  34  * generates glide computer events (GCE).
  35  */
  36 class TaskEventObserver final {
  37   unsigned best_alternate_id;
  38
  39 public:
  40   constexpr TaskEventObserver()
  41     :best_alternate_id(-1) {}
  42
  43   void Check(const TaskManager &task_manager);
  44 };
  45
  46 #endif