#ifndef __FORM_H
#define __FORM_H

#ifndef __PRINTER_H
#include <printer.h>
#endif

#ifndef __SCANNER_H
#include <scanner.h>
#endif

#ifndef __MASK_H
class TMask;
#endif

#ifndef __RELATION_H
class TRelation;
class TCursor;
#endif

enum pagetype { odd_page, even_page, first_page, last_page };

class TForm;
class TForm_item;

class TPrint_section : public TArray
{
  static TMask* _msk;

  word _height;         // Altezza della sezione
  int _x, _y;           // Offset di stampa   

  TForm* _form;         // Form cui appartiene alla sezione
  TArray _item;         // Lista dei campi da stampare
  
  const TPrint_section& copy(const TPrint_section& ps);
  
protected:
  virtual void print_on(ostream& out) const;
  TForm_item* parse_item(const TString& key);
  TForm_item* parse_item(TScanner& scanner);

public:
  TPrintrow& row(int num);
  TForm* form() const { return _form; }
  
  TForm_item& field(int n) const { return (TForm_item&)_item[n]; }
  word fields() const { return _item.items(); }
  word height() const { return _height; }
  int offset_x() const { return _x; }
  int offset_y() const { return _y; }
  void offset(int& x, int& y) const;
  
  virtual bool ok() const { return height() > 0 || fields() > 0; }
  
  void reset();
  bool update();
  bool parse(TScanner& scanner);

  bool edit(const char* title);
  
  const TPrint_section& operator=(const TPrint_section& ps) { return copy(ps); }
  TPrint_section(TForm* parent);
  TPrint_section(const TPrint_section& ps) { copy(ps); }
  virtual ~TPrint_section();
};


class TForm : public TObject
{                    
  friend class TForm_editor;

  TFilename _name;       // Profile name

  TRelation* _relation;  // Can be NULL
  TCursor* _cursor;      // Can be NULL

  TArray _head;          // Headers
  TArray _body;          // Bodies
  TArray _foot;          // Footers
  
  bool _lastpage;        // I am about to print the last page

  TPrint_section* exist(char s, pagetype t, bool create = FALSE);   // Can be NULL
  
  static void header_handler(TPrinter& p);
  static void footer_handler(TPrinter& p);

protected:                                                
  // H = Header, B = Body, F = Footer, R = Relation
  TPrint_section& section(char s = 'B', word page = 1);
  word height();         // Height of first page
  
  void print_section(ostream& out, char s) const;
  virtual void print_on(ostream& out) const;
  bool edit_relation();

  bool parse_use(TScanner&);
  bool parse_join(TScanner&);

  word page(const TPrinter& p) const;
  
  virtual long records() const;
  virtual word set_header(word p, bool u);
  virtual word set_body(word p, bool u);
  virtual word set_footer(word p, bool u);
  
public:
  bool print(long from = 0L, long to = -1L);
  
  const TFilename& name() const { return _name; }
  
  TRelation* relation() const { return _relation; }
  TCursor* cursor() const { return _cursor; }

  TForm(const char* form);
  virtual ~TForm();
};

#endif