src/Blackboard/LiveBlackboard.cpp

   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 #include "LiveBlackboard.hpp"
  25 #include "BlackboardListener.hpp"
  26
  27 #include <assert.h>
  28
  29 void
  30 LiveBlackboard::AddListener(BlackboardListener &listener)
  31 {
  32   assert(!calling_listeners);
  33   /* must not be registered already */
  34   assert(std::find(listeners.begin(), listeners.end(),
  35                    &listener) == listeners.end());
  36
  37   listeners.push_back(&listener);
  38 }
  39
  40 void
  41 LiveBlackboard::RemoveListener(BlackboardListener &listener)
  42 {
  43   assert(!calling_listeners);
  44
  45   auto i = std::find(listeners.begin(), listeners.end(), &listener);
  46   assert(i != listeners.end());
  47
  48   listeners.erase(i);
  49 }
  50
  51 void
  52 LiveBlackboard::BroadcastGPSUpdate()
  53 {
  54   calling_listeners = true;
  55
  56   for (BlackboardListener *listener : listeners)
  57     listener->OnGPSUpdate(Basic());
  58
  59   calling_listeners = false;
  60 }
  61
  62 void
  63 LiveBlackboard::BroadcastCalculatedUpdate()
  64 {
  65   calling_listeners = true;
  66
  67   for (BlackboardListener *listener : listeners)
  68     listener->OnCalculatedUpdate(Basic(), Calculated());
  69
  70   calling_listeners = false;
  71 }
  72
  73 void
  74 LiveBlackboard::BroadcastComputerSettingsUpdate()
  75 {
  76   calling_listeners = true;
  77
  78   for (BlackboardListener *listener : listeners)
  79     listener->OnComputerSettingsUpdate(GetComputerSettings());
  80
  81   calling_listeners = false;
  82 }
  83
  84 void
  85 LiveBlackboard::BroadcastUISettingsUpdate()
  86 {
  87   calling_listeners = true;
  88
  89   for (BlackboardListener *listener : listeners)
  90     listener->OnUISettingsUpdate(GetUISettings());
  91
  92   calling_listeners = false;
  93 }