/*
 * Copyright (C) 2005 Taybin Rutkin <taybin@taybin.com>
 * Copyright (C) 2006-2014 David Robillard <d@drobilla.net>
 * Copyright (C) 2006-2017 Paul Davis <paul@linuxaudiosystems.com>
 * Copyright (C) 2007-2011 Carl Hetherington <carl@carlh.net>
 * Copyright (C) 2016-2017 Robin Gareus <robin@gareus.org>
 *
 * 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 <set>
#include <list>

#include "pbd/signals.h"
#include "ardour/types.h"

namespace ARDOUR {
	class Playlist;
}

class RegionView;
class TimeAxisView;

/** Class to represent list of selected regions.
 */
class RegionSelection : public std::list<RegionView*>
{
public:
	RegionSelection();
	RegionSelection (const RegionSelection&);

	RegionSelection& operator= (const RegionSelection&);

	bool add (RegionView*);
	bool remove (RegionView*);
	bool remove (std::vector<RegionView*>);
	void sort_by_position_and_track ();

	bool contains (RegionView*) const;
	bool contains (std::shared_ptr<ARDOUR::Region>) const;
	bool involves (const TimeAxisView&) const;

	void clear_all();

	Temporal::timepos_t start_time () const;
	Temporal::timepos_t end_time () const;

	const std::list<RegionView *>& by_layer() const { return _bylayer; }
	void  by_position (std::list<RegionView*>&) const;
	void  by_track (std::list<RegionView*>&) const;

	size_t n_midi_regions() const;

	ARDOUR::PlaylistSet playlists () const;
	std::list<PBD::ID> pending;

	ARDOUR::RegionList regionlist () const;

private:
	void add_to_layer (RegionView *);

	std::list<RegionView *> _bylayer; ///< list of regions sorted by layer
};