1 files changed, 66 insertions, 0 deletions
diff --git a/hdr/staff.hh b/hdr/staff.hh
new file mode 100644
index 0000000000..ee95864fa9
--- /dev/null
+++ b/hdr/staff.hh
@@ -0,0 +1,66 @@
+#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;
+
+    /// runtime field
+    PointerList<Staff_column*> cols;
+
+    /// indirections to the Score and PScore
+    Score *score_;
+    PScore *pscore_;
+
+    /****************************************************************/
+    Staff(const Staff&src);
+    void add_voice(Voice *v);
+    void add_staff_column(Staff_column *sp);
+
+    Paperdef*paper()const;
+    /// 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 */
+    void setup_staffcols();
+
+    void OK() const;
+    void print() const;
+    Real last() const;
+    void clean_cols() ;
+    Staff_column * get_col(Real,bool);
+
+    void add_commands(PointerList<Command* >const & sv);
+    /**
+    add all commands from sv.
+
+    PRE
+    sv is time-ordered.
+    */
+
+    Staff();
+    /**
+      Should construct with Score as arg, but this isn't known during parsing.      
+      */
+    /****************************************************************
+      VIRTUALS
+    ****************************************************************/
+    virtual Staff*clone()const=0;    
+    virtual void set_output(PScore * destination)=0;
+    virtual void walk()=0;    
+    virtual Staff_column * create_col(Score_column * )=0;
+    virtual ~Staff() { }
+};
+#endif
+
+