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#ifndef STAFF_HH
#define STAFF_HH
#include "score.hh"
#include "voice.hh"
#include "command.hh"
/// base class for a collection of voices.
struct Staff {
/// synchronous horizontal stuff
PointerList<Voice*> voices;
/// commands in chronological order
PointerList<Command *> commands;
PointerList<Staff_column*> cols;
/// indirections to the Score and PScore
Score *score_;
PScore *pscore_;
void add_voice(Voice *v);
void add_staff_column(Staff_column *sp);
/// interpret all requests and add items to #destination#.
void process();
/**
This routines calls virtual functions from Staff, to delegate the
interpretation of requests to a derived class of Staff */
/****************************************************************
VIRTUALS
****************************************************************/
void setup_staffcols();
virtual void set_output(PScore * destination)=0;
virtual void grant_requests()=0;
Staff_column * get_col(Mtime,bool);
void add_commands(PointerList<Command* >const & sv);
/**
add all commands from sv.
PRE
sv is time-ordered.
*/
virtual Staff_column * create_col(Score_column * )=0;
void OK() const;
void print() const;
Mtime last() const;
void clean_cols() ;
virtual ~Staff() { }
};
#endif
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