#ifndef __MSKSHEET_H
#define __MSKSHEET_H

#ifndef __MASK_H
#include <mask.h>
#endif


class TSpreadsheet;
typedef bool (*SPREADSHEET_NOTIFY)(int r, KEY k);


class TSheet_field : public TMask_field
{
  TSpreadsheet* _sheet;
  TToken_string _head;

protected:
  virtual word class_id() const;
  virtual bool on_hit();
  virtual bool on_key(KEY k);
  virtual bool test_focus_change(); 
  
  virtual void parse_head(TScanner& scanner);
  virtual bool parse_item(TScanner& scanner);
  virtual void create(WINDOW parent);

  virtual void highlight() const;
  virtual void exchange(bool show_value, const real& n);  

public:
  TToken_string& row(int n);    // Get/Create a new row
  TString_array& rows_array() const;   // Get all rows
  int first_empty() const;      // First empty row
  int items() const;            // Number of rows
  int selected() const;         // Number of current row

  virtual void reset();
  virtual void enable(bool on);
  
  void on_idle();

  void destroy(int r = -1);     // Destroy row
  void force_update(int r = -1);// Update data/screen

  TMask& sheet_mask() const;
  void set_notify(SPREADSHEET_NOTIFY n);

  void enable_column(int col, bool on = TRUE);
  void enable_cell(int row, int column, bool on = TRUE);
  void disable_cell(int row, int column) { enable_cell(row, column, FALSE); }
  bool cell_disabled(int row, int column) const;

  TSheet_field(TMask* m);
  virtual ~TSheet_field();
};

#endif