playlist_selection.h

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/*
 * Copyright (C) 2006-2007 Paul Davis <paul@linuxaudiosystems.com>
 * Copyright (C) 2009-2014 David Robillard <d@drobilla.net>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */
 
#pragma once
 
#include "ardour/playlist.h"
 
#include <list>
#include <memory>
 
struct PlaylistSelection : std::list<std::shared_ptr<ARDOUR::Playlist> > {
public:
        const_iterator
        get_nth(ARDOUR::DataType type, size_t nth) const {
                size_t count = 0;
                for (const_iterator l = begin(); l != end(); ++l) {
                        if ((*l)->data_type() == type) {
                                if (count++ == nth) {
                                        return l;
                                }
                        }
                }
                return end();
        }
};