region_selection.h

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/*
    Copyright (C) 2006 Paul Davis

    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., 675 Mass Ave, Cambridge, MA 02139, USA.
*/

#ifndef __ardour_gtk_region_selection_h__
#define __ardour_gtk_region_selection_h__

#include <set>
#include <list>

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

namespace ARDOUR {
        class Playlist;
}

class RegionView;
class TimeAxisView;

class RegionSelection : public std::list<RegionView*>
{
  public:
        RegionSelection();
        RegionSelection (const RegionSelection&);

        RegionSelection& operator= (const RegionSelection&);

        bool add (RegionView*);
        bool remove (RegionView*);
        void sort_by_position_and_track ();

        bool contains (RegionView*) const;
        bool involves (const TimeAxisView&) const;

        void clear_all();

        framepos_t start () const;

        /* "end" collides with list<>::end */

        framepos_t end_frame () 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;

        std::set<boost::shared_ptr<ARDOUR::Playlist> > playlists () const;
        std::list<PBD::ID> pending;

  private:
        void remove_it (RegionView*);

        void add_to_layer (RegionView *);

        std::list<RegionView *> _bylayer; 
        PBD::ScopedConnection death_connection;
};

#endif /* __ardour_gtk_region_selection_h__ */