src/lastfm.h

   1 /***************************************************************************
   2  *   Copyright (C) 2008-2014 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 #ifdef HAVE_CURL_CURL_H
  27
  28 #include <memory>
  29 #include <boost/thread/future.hpp>
  30
  31 #include "interfaces.h"
  32 #include "lastfm_service.h"
  33 #include "screen.h"
  34 #include "utility/wide_string.h"
  35
  36 struct Lastfm: Screen<NC::Scrollpad>, Tabbable
  37 {
  38         Lastfm();
  39
  40         virtual void switchTo() OVERRIDE;
  41         virtual void resize() OVERRIDE;
  42
  43         virtual std::wstring title() OVERRIDE;
  44         virtual ScreenType type() OVERRIDE { return ScreenType::Lastfm; }
  45
  46         virtual void update() OVERRIDE;
  47
  48         virtual void enterPressed() OVERRIDE { }
  49         virtual void spacePressed() OVERRIDE { }
  50
  51         virtual bool isMergable() OVERRIDE { return true; }
  52
  53         template <typename ServiceT>
  54         void queueJob(ServiceT &&service)
  55         {
  56                 typedef typename std::remove_reference<ServiceT>::type ServiceNoRef;
  57
  58                 auto old_service = dynamic_cast<ServiceNoRef *>(m_service.get());
  59                 // if the same service and arguments were used, leave old info
  60                 if (old_service != nullptr && *old_service == service)
  61                         return;
  62
  63                 m_service = std::make_shared<ServiceNoRef>(std::forward<ServiceT>(service));
  64                 m_worker = boost::async(boost::launch::async, boost::bind(&LastFm::Service::fetch, m_service.get()));
  65
  66                 w.clear();
  67                 w << "Fetching information...";
  68                 w.flush();
  69                 m_title = ToWString(m_service->name());
  70         }
  71
  72 protected:
  73         virtual bool isLockable() OVERRIDE { return false; }
  74
  75 private:
  76         void getResult();
  77
  78         std::wstring m_title;
  79
  80         std::shared_ptr<LastFm::Service> m_service;
  81         boost::future<LastFm::Service::Result> m_worker;
  82 };
  83
  84 extern Lastfm *myLastfm;
  85
  86 #endif // HAVE_CURL_CURL_H
  87
  88 #endif // NCMPCPP_LASTFM_H
  89