src/interfaces.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_INTERFACES_H
  22 #define NCMPCPP_INTERFACES_H
  23
  24 #include <string>
  25 #include "gcc.h"
  26 #include "screen.h"
  27 #include "song.h"
  28 #include "proxy_song_list.h"
  29
  30 struct Filterable
  31 {
  32         virtual bool allowsFiltering() = 0;
  33         virtual std::string currentFilter() = 0;
  34         virtual void applyFilter(const std::string &filter) = 0;
  35 };
  36
  37 struct Searchable
  38 {
  39         virtual bool allowsSearching() = 0;
  40         virtual bool search(const std::string &constraint) = 0;
  41         virtual void nextFound(bool wrap) = 0;
  42         virtual void prevFound(bool wrap) = 0;
  43 };
  44
  45 struct HasSongs
  46 {
  47         virtual ProxySongList proxySongList() = 0;
  48
  49         virtual bool allowsSelection() = 0;
  50         virtual void reverseSelection() = 0;
  51         virtual MPD::SongList getSelectedSongs() = 0;
  52 };
  53
  54 struct HasColumns
  55 {
  56         virtual bool previousColumnAvailable() = 0;
  57         virtual void previousColumn() = 0;
  58
  59         virtual bool nextColumnAvailable() = 0;
  60         virtual void nextColumn() = 0;
  61 };
  62
  63 struct Tabbable
  64 {
  65         Tabbable() : m_previous_screen(0) { }
  66
  67         void switchToPreviousScreen() const {
  68                 if (m_previous_screen)
  69                         m_previous_screen->switchTo();
  70         }
  71         void setPreviousScreen(BaseScreen *screen) {
  72                 m_previous_screen = screen;
  73         }
  74         BaseScreen *previousScreen() const {
  75                 return m_previous_screen;
  76         }
  77
  78 private:
  79         BaseScreen *m_previous_screen;
  80 };
  81
  82 #endif // NCMPCPP_INTERFACES_H