src/song_list.h

   1 /***************************************************************************
   2  *   Copyright (C) 2008-2016 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_SONG_LIST_H
  22 #define NCMPCPP_SONG_LIST_H
  23
  24 #include <boost/range/detail/any_iterator.hpp>
  25 #include <boost/tuple/tuple.hpp>
  26 #include "menu.h"
  27 #include "song.h"
  28
  29 template <typename ValueT>
  30 using SongIteratorT = boost::range_detail::any_iterator<
  31         ValueT,
  32         boost::random_access_traversal_tag,
  33         const ValueT, // const needed, see https://svn.boost.org/trac/boost/ticket/10493
  34         std::ptrdiff_t
  35 >;
  36
  37 typedef SongIteratorT<boost::tuple<NC::List::Properties &, MPD::Song *>> SongIterator;
  38 typedef SongIteratorT<boost::tuple<const NC::List::Properties &, const MPD::Song *>> ConstSongIterator;
  39
  40 namespace Bit {
  41 const size_t Properties = 0;
  42 const size_t Song = 1;
  43 }
  44
  45 struct SongList
  46 {
  47         virtual SongIterator currentS() = 0;
  48         virtual ConstSongIterator currentS() const = 0;
  49         virtual SongIterator beginS() = 0;
  50         virtual ConstSongIterator beginS() const = 0;
  51         virtual SongIterator endS() = 0;
  52         virtual ConstSongIterator endS() const = 0;
  53
  54         virtual std::vector<MPD::Song> getSelectedSongs() = 0;
  55 };
  56
  57 inline SongIterator begin(SongList &list) { return list.beginS(); }
  58 inline ConstSongIterator begin(const SongList &list) { return list.beginS(); }
  59 inline SongIterator end(SongList &list) { return list.endS(); }
  60 inline ConstSongIterator end(const SongList &list) { return list.endS(); }
  61
  62 struct SongMenu: NC::Menu<MPD::Song>, SongList
  63 {
  64         SongMenu() { }
  65         SongMenu(NC::Menu<MPD::Song> &&base)
  66         : NC::Menu<MPD::Song>(std::move(base)) { }
  67
  68         virtual SongIterator currentS() override;
  69         virtual ConstSongIterator currentS() const override;
  70         virtual SongIterator beginS() override;
  71         virtual ConstSongIterator beginS() const override;
  72         virtual SongIterator endS() override;
  73         virtual ConstSongIterator endS() const override;
  74
  75         virtual std::vector<MPD::Song> getSelectedSongs() override;
  76 };
  77
  78 #endif // NCMPCPP_SONG_LIST_H