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#ifndef __pbd__step_editor_h__
#define __pbd__step_editor_h__

#include <string>

#include <gdk/gdk.h>
#include <sigc++/trackable.h>

#include "pbd/signals.h"
#include "evoral/types.hpp"

namespace ARDOUR {
        class MidiTrack;
        class MidiRegion;
}

class MidiRegionView;
class MidiTimeAxisView;
class PublicEditor;
class StepEntry;

class StepEditor : public PBD::ScopedConnectionList, public sigc::trackable
{
  public:
        StepEditor (PublicEditor&, boost::shared_ptr<ARDOUR::MidiTrack>, MidiTimeAxisView&);
        virtual ~StepEditor ();

	void check_step_edit ();
	void step_edit_rest (Evoral::MusicalTime beats);
        void step_edit_beat_sync ();
        void step_edit_bar_sync ();
        int  step_add_bank_change (uint8_t channel, uint8_t bank);
        int  step_add_program_change (uint8_t channel, uint8_t program);
        int  step_add_note (uint8_t channel, uint8_t pitch, uint8_t velocity,
                            Evoral::MusicalTime beat_duration);
        void step_edit_sustain (Evoral::MusicalTime beats);
        bool step_edit_within_triplet () const;
        void step_edit_toggle_triplet ();
        bool step_edit_within_chord () const;
        void step_edit_toggle_chord ();
        void reset_step_edit_beat_pos ();
        void resync_step_edit_to_edit_point ();
        void move_step_edit_beat_pos (Evoral::MusicalTime beats);
        void set_step_edit_cursor_width (Evoral::MusicalTime beats);

        std::string name() const;

	void start_step_editing ();
	void stop_step_editing ();

  private:
        ARDOUR::framepos_t                    step_edit_insert_position;
	Evoral::MusicalTime                   step_edit_beat_pos;
	boost::shared_ptr<ARDOUR::MidiRegion> step_edit_region;
	MidiRegionView*                       step_edit_region_view;
        uint8_t                              _step_edit_triplet_countdown;
        bool                                 _step_edit_within_chord;
        Evoral::MusicalTime                  _step_edit_chord_duration;
        PBD::ScopedConnection                 step_edit_region_connection;
        PublicEditor&                        _editor;
        boost::shared_ptr<ARDOUR::MidiTrack> _track;
        StepEntry*                            step_editor;
        MidiTimeAxisView&                    _mtv;
        int8_t                                last_added_pitch;
        Evoral::MusicalTime                   last_added_end;

        void region_removed (boost::weak_ptr<ARDOUR::Region>);
        void playlist_changed ();
        bool step_editor_hidden (GdkEventAny*);
        void step_editor_hide ();
        void resync_step_edit_position ();
        void prepare_step_edit_region ();
};

#endif /* __pbd__step_editor_h__ */