src/screens/lastfm.h

   1 /***************************************************************************
   2  *   Copyright (C) 2008-2017 by Andrzej Rybczak                            *
   3  *   electricityispower@gmail.com                                          *
   4  *                                                                         *
   5  *   This program is free software; you can redistribute it and/or modify  *
   6  *   it under the terms of the GNU General Public License as published by  *
   7  *   the Free Software Foundation; either version 2 of the License, or     *
   8  *   (at your option) any later version.                                   *
   9  *                                                                         *
  10  *   This program is distributed in the hope that it will be useful,       *
  11  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  12  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  13  *   GNU General Public License for more details.                          *
  14  *                                                                         *
  15  *   You should have received a copy of the GNU General Public License     *
  16  *   along with this program; if not, write to the                         *
  17  *   Free Software Foundation, Inc.,                                       *
  18  *   51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.              *
  19  ***************************************************************************/
  20
  21 #ifndef NCMPCPP_LASTFM_H
  22 #define NCMPCPP_LASTFM_H
  23
  24 #include "config.h"
  25
  26 #include <boost/thread/future.hpp>
  27 #include <memory>
  28
  29 #include "interfaces.h"
  30 #include "lastfm_service.h"
  31 #include "screens/screen.h"
  32 #include "utility/wide_string.h"
  33
  34 struct Lastfm: Screen<NC::Scrollpad>, Tabbable
  35 {
  36         Lastfm();
  37
  38         virtual void switchTo() override;
  39         virtual void resize() override;
  40
  41         virtual std::wstring title() override;
  42         virtual ScreenType type() override { return ScreenType::Lastfm; }
  43
  44         virtual void update() override;
  45
  46         virtual bool isLockable() override { return true; }
  47         virtual bool isMergable() override { return true; }
  48
  49         template <typename ServiceT>
  50         void queueJob(ServiceT *service)
  51         {
  52                 auto old_service = dynamic_cast<ServiceT *>(m_service.get());
  53                 // if the same service and arguments were used, leave old info
  54                 if (old_service != nullptr && *old_service == *service)
  55                         return;
  56
  57                 m_service = std::shared_ptr<ServiceT>(service);
  58                 m_worker = boost::async(
  59                         boost::launch::async,
  60                         std::bind(&LastFm::Service::fetch, m_service));
  61
  62                 w.clear();
  63                 w << "Fetching information...";
  64                 m_refresh_window = true;
  65                 m_title = ToWString(m_service->name());
  66         }
  67
  68 private:
  69         std::wstring m_title;
  70         bool m_refresh_window;
  71
  72         std::shared_ptr<LastFm::Service> m_service;
  73         boost::BOOST_THREAD_FUTURE<LastFm::Service::Result> m_worker;
  74 };
  75
  76 extern Lastfm *myLastfm;
  77
  78 #endif // NCMPCPP_LASTFM_H