#include <stdlib.h>

#include <applicat.h>
#include <colors.h>
#include <controls.h>
#include <mask.h>
#include <urldefid.h>
#include <utility.h>

#include "cg3.h"
#include "cglib.h"

#include "cg3600a.h"

///////////////////////////////////////////////////////////
// TList
///////////////////////////////////////////////////////////

class TList : public TContainer
{           
  enum { MAX_SKIP = 8192 };

  struct TList_object : public TObject
  { 
    TObject* _obj;
    TList_object* _next;
    TList_object* _prev;
  };

  TList_object** _skip;
  long _items, _current;
  long _step, _last_skip;

protected:
  // @cmember Ritorna un puntatore al primo oggetto del contenitore
  virtual TObject* first_item( );
  // @cmember Ritorna un puntatore all'ultimo oggetto del contenitore
  virtual TObject* last_item( );
  // @cmember Ritorna un puntatore all'oggetto successivo all'oggetto corrente
  virtual TObject* succ_item( );
  // @cmember Ritorna un puntatore all'oggetto che precede l'oggetto corrente
  virtual TObject* pred_item( );
  // @cmember Ritorna il numero di oggetti nel contenitore
  virtual long objects( );

protected:
  TList_object* detach_lstobj(long index);
  TList_object* lstobjptr(long index);
  void change_step(long step);
  
public:
  
  TObject* TList::objptr(long index);
  
  void destroy();
  long insert(TObject* obj, long pos);
  long add(TObject* obj, long pos = -1);
  
  TObject* detach(long pos);
  bool remove(long pos);
  
  void choose_step(long expected_size); // Sceglie il passo per gli elemnti

  TList(long expected_size);
  virtual ~TList();
};

TList::TList(long expected_size)
          : _items(0), _current(0)
{
  _skip = new TList_object*[MAX_SKIP];
  _skip[0] = NULL;
  choose_step(expected_size);
}

TList::~TList()
{
  destroy();
  delete [] _skip;
} 

long TList::objects( )
{
  return _items;
}

TObject* TList::first_item()
{
  return objptr(_current = 0);
}

TObject* TList::succ_item()
{
  return objptr(++_current);
}

TObject* TList::pred_item()
{
  return objptr(_current++);
}

TObject* TList::last_item()
{
  return objptr(_current = _items-1);
}

void TList::destroy() 
{
  TList_object* head = _skip[0];
  while (head)
  {
    TList_object* next = head->_next;
    if (head->_obj)
      delete head->_obj;
    delete head;
    head = next;
  }
  _items = _current = _last_skip = 0;
  _skip[0] = NULL;
}

TList::TList_object* TList::lstobjptr(long index) 
{
  TList_object* lstobj = NULL;
  const ldiv_t p = ldiv(index, _step);
  if (p.quot >= 0 && p.quot < _last_skip)
  {
    TList_object* lo = _skip[p.quot];
    for (long s = p.rem; lo && s > 0; s--)
      lo = lo->_next;

    lstobj = lo;
  }
  return lstobj;
}

TObject* TList::objptr(long index) 
{
  TList_object* lo = lstobjptr(index);
  return lo ? lo->_obj : NULL;
}

void TList::change_step(long step)
{
  CHECKD(step > 0 && step <= 16384, "Bad list step ", step);
  _step = step;
  _last_skip = 0;
  
  step = 0;       
  for (TList_object* lo = _skip[0]; lo; lo = lo->_next, step--)
  {
    if (step == 0)
    {
      CHECK(_last_skip < MAX_SKIP, "Too many items");
      _skip[_last_skip++] = lo;
      step = _step; 
    }
  }
}

void TList::choose_step(long expected_size)
{   
  long step = expected_size / MAX_SKIP + 1;
  change_step(step);
}

long TList::insert(TObject* obj, long index)
{
  if (index < 0)
    index = 0;
  else  
  {
    if (index > _items) 
      index = _items;
  }    
  const long pred = index-1;
  
  TList_object* newobj = new TList_object;
  newobj->_obj = obj;  
  
  if (pred < 0)
  {               
    newobj->_prev = NULL;
    newobj->_next = _skip[0];
    if (_skip[0])
      _skip[0]->_prev = newobj;
  }  
  else
  {
    TList_object* lo = lstobjptr(pred);
    CHECK(lo, "NULL insertion point");
    newobj->_next = lo->_next;
    newobj->_prev = lo;
    if (lo->_next)
      lo->_next->_prev = newobj;
    lo->_next = newobj;
  }
  _items++;
  
  ldiv_t p = ldiv(index, _step);
  if (p.rem == 0 && p.quot < MAX_SKIP)    // Cambia il capolista
    _skip[p.quot] = newobj;

  for (long i = p.quot + 1; i < _last_skip; i++)
    _skip[i] = _skip[i]->_prev;           // Aggiorna capilista successivi
  
  // Siamo andati oltre l'ultimo skip
  const long s = (_items - 1) / _step + 1; 
  if (s > _last_skip)
  {
    if (s > MAX_SKIP)
      change_step(_step+1);
    else
      _last_skip++;
  }   
  
  return index;
}

long TList::add(TObject* obj, long index)
{
  if (index < 0 || index >= _items) 
  {
    index = insert(obj, _items);
  }  
  else
  {
    TList_object* lo = lstobjptr(index);
    CHECK(lo, "NULL list object");
    delete lo->_obj;
    lo->_obj = obj;
  }
  return index;  
}

TList::TList_object* TList::detach_lstobj(long index)
{
  TList_object* lo = lstobjptr(index);
  if (lo)
  {
    if (lo->_prev)
      lo->_prev->_next = lo->_next;
    if (lo->_next)
      lo->_next->_prev = lo->_prev;
    ldiv_t res = ldiv(index, _step);
    if (res.rem == 0)
      _skip[res.quot] = lo->_next;
    long p;
    for (p = res.quot + 1; p < _last_skip; p++)
      _skip[p] = _skip[p]->_next;
      
    _items--;
  
    p = (_items - 1) / _step + 1; 
    if (p < _last_skip)
    {                 
      _last_skip--;
      _skip[_last_skip] = NULL;
    }  
  } 
  
  return lo;
}

TObject* TList::detach(long index)
{
  TList_object* lo = detach_lstobj(index);
  TObject* obj;
  if (lo)
  {
    obj = lo->_obj;
    delete lo;
  }  
  else
    obj = NULL;
  return obj;
}

bool TList::remove(long index)
{
  TObject* o = detach(index);
  if (o)
    delete o;
  return o != NULL;
}   

///////////////////////////////////////////////////////////
// TGrid_control
///////////////////////////////////////////////////////////

class TGrid_control;

class TGrid_field : public TOperable_field
{     
  long _to_select;
                  
protected: // TMask_field
  virtual void create(WINDOW parent);
  virtual void parse_head(TScanner& scanner);
  virtual bool parse_item(TScanner& scanner);

public:                      
  virtual long items() const;
  virtual bool handler(XI_EVENT* ep);

  TGrid_control* grid() const { return (TGrid_control*)_ctl; }
  
  TGrid_field(TMask* m) : TOperable_field(m) { }
  virtual ~TGrid_field() { }
};

class TGrid_control : public TControl
{
  enum { FIRST_FIELD = 101, MAX_COL = 128 };

  long _cur_rec;
  
  // @cmember:(INTERNAL) Tipo di ogni colonna
  byte _type[MAX_COL];
  
  TGrid_field* _grid;

protected:  // TControl
  //@cmember Gestisce gli eventi delle celle
  virtual bool event_handler(XI_OBJ* itf, XI_EVENT* xiev);
  
protected:  
  long items() const { return _grid->items(); }

  int rec2row(long rec) const;
  long row2rec(int row) const;
  
  XI_OBJ* find_column(int col) const;

public:                   
  long selected() const { return _cur_rec; }
  void select(long n);
  void set_focus_rec(long rec);
  
  int visible_rows() const;
  
  byte& column_type(int c) { CHECKD(c >= 0 && c < MAX_COL, "Bad column ", c); return _type[c]; }

  void update(long n = -1);

  TGrid_control(WINDOW parent, short cid, 
                short x, short y, short dx, short dy,              
                const char* flags, const char* head,
                TGrid_field* owner);
  virtual ~TGrid_control() {}
};


TGrid_control::TGrid_control(
  WINDOW parent,         // @parm Finestra alla quale appartiene lo spreadsheet
  short cid,             // @parm Identificatore
  short x,               // @parm Coordinata x (in caratteri) nel quale posizionare lo spreadsheet
  short y,               // @parm Coordinata y (in caratteri) nel quale posizionare lo spreadsheet
  short dx,              // @parm Larghezza (in caratteri) dello spreasheet
  short dy,              // @parm Lunghezza (in caratteri) dello spreasheet
  const char* flags,     // @parm Flags di abilitazione
  const char* head,      // @parm Titolo delle colonne
  TGrid_field* owner)
              : _grid(owner), _cur_rec(0)
{
  const int NUMBER_WIDTH = strchr(flags, 'A') ? 7 : 1;
  short v_width[MAX_COL];
  short m_width[MAX_COL];
  int fixed_columns = 1;                               // Number of fixed columns
  int lines_in_header = 1;                             // Number of header lines
  const bool multiline = strchr(flags, 'M') != NULL;
  const int lines_in_cell = multiline ? (int)xi_get_pref(XI_PREF_DEFAULT_MAX_LINES_IN_CELL) : 1;
  
  // Calcolo larghezza massima tabella
  TToken_string header(head);
  TToken_string new_header(256);
  int i = 0;
  int f_width = NUMBER_WIDTH;                          // Stima larghezza colonne fisse
  int max_width = f_width;                             // Stima larghezza della colonna piu' grande
  
  for (const char* h = header.get(); h; h = header.get(), i++)
  {
    CHECKD(i < MAX_COL, "Tu meni calumns in scit: ", i);
    _type[i] = ' ';
    
    TFixed_string testa(esc(h));
    const bool multiple = testa.find('\n') > 0;
    if (multiple)
      lines_in_header = 2;

    const int at = testa.find('@');
    int v = testa.len();                             // Video width
    if (at >= 0)
    {
      const TString& wi = testa.mid(at+1);
      const int video = atoi(wi);
      if (video > 0) v = video;
      if (wi.find('F') >= 0) 
      {
        fixed_columns = i+2;
        f_width += v+1;
      }    
      if (wi.find('R') >= 0)
        _type[i] = 'R';

      testa.cut(at);
    } 
    
    v++;                                                 
    // memory width of column
    m_width[i] = v * lines_in_cell;         
    if (v > 64) v = 64;
    v_width[i] = v;
    if (v_width[i] > max_width) max_width = v_width[i];
    
    new_header.add(testa);
  }
  
  // Calcola rettangolo massimo per lo sheet
  XI_RCT rct; coord2rct(parent, x, y, dx, dy, rct);
  rct.right -= 2*XI_FU_MULTIPLE;           // toglie scroll-bar
 
  // Controlla se ci sono troppe colonne fisse
  if ((f_width+max_width)*XI_FU_MULTIPLE > rct.right)
    fixed_columns = 1;
    
  XI_OBJ* itf = get_interface(parent);     

  XI_OBJ_DEF* listdef = xi_add_list_def(NULL, cid,
                                        rct.top, rct.left, rct.bottom-rct.top,
                                        XI_ATR_ENABLED | XI_ATR_VISIBLE,
                                        NORMAL_COLOR, NORMAL_BACK_COLOR,     // normal
                                        DISABLED_COLOR, DISABLED_BACK_COLOR, // disabled
                                        FOCUS_COLOR,                         // active
                                        0);
                                        
  listdef->app_data = (long)this;
  
  XI_LIST_DEF* l = listdef->v.list;
  l->min_heading_height = xi_button_calc_height_font_id(xvt_default_font()) * lines_in_header;
  l->sizable_columns    = TRUE;
  l->movable_columns    = TRUE;
  l->fixed_columns      = fixed_columns;
  l->scroll_bar         = TRUE;                        
  l->scroll_bar_button  = TRUE;
  l->white_space_color  = MASK_DARK_COLOR;
  l->rule_color         = MASK_DARK_COLOR;

  // Definizione della prima colonna (numero di riga)
  const long attr = XI_ATR_VISIBLE | XI_ATR_RJUST | XI_ATR_SELECTABLE;                                            
  XI_OBJ_DEF* coldef = xi_add_column_def(listdef, FIRST_FIELD+1000-1, attr, 0, 
                                         NUMBER_WIDTH * XI_FU_MULTIPLE, NUMBER_WIDTH , "");
  
  coldef->app_data = (long)this;            
  XI_COLUMN_DEF* cd = coldef->v.column;
  cd->heading_platform = TRUE;
  cd->column_platform  = TRUE;
  cd->size_rows        = multiline;

  for (h = new_header.get(0), i = 0; h; h = new_header.get(), i++)
  {                  
    long attr = XI_ATR_VISIBLE | XI_ATR_ENABLED | XI_ATR_AUTOSCROLL | XI_ATR_READONLY; 
    if (_type[i] == 'C') 
      attr |= XI_ATR_SELECTABLE;            
    if (_type[i] == 'R') 
      attr |= XI_ATR_RJUST;
    coldef = xi_add_column_def(listdef, FIRST_FIELD+i+1000, attr, i+1, 
                               v_width[i] * XI_FU_MULTIPLE, m_width[i], (char*)h);

    coldef->app_data = (long)this;
    cd = coldef->v.column;  
    cd->heading_platform = TRUE;
    cd->center_heading   = strchr(h, '\n') == NULL;
    if (multiline)
    {
      cd->size_rows = TRUE;
      cd->wrap_text = TRUE; 
    }  
  }
                                
  RCT rd; xi_get_def_rect(listdef, &rd);
  if ((rd.right - rd.left) > (rct.right - rct.left))
    l->width = rct.right - rct.left;

  _obj = xi_create(itf, listdef);     // Create the whole thing!
  xi_dequeue();                       // Flush events in XOL
  xi_tree_free(listdef);              // Free definitions
               
  CHECKD(_obj, "Can't create list control ", cid);   
  update_tab_cid();
} 

// Converts a row number in the correspondig record number
int TGrid_control::rec2row(long record) const
{
  int rows;
  const long* rec = xi_get_list_info(_obj, &rows);
  int r = int(record - rec[0]);
  if (r < 0 || r >= rows) 
    r = -1;
  return r;
}

// Converts a row number in the correspondig record number
long TGrid_control::row2rec(int row) const
{
  int rows;
  const long* handle = xi_get_list_info(_obj, &rows);
  
  if (row < 0) 
    row = 0;
  else 
  {
    if (row >= rows) 
      row = rows-1;
  }    
  const long r = handle[row];
  CHECKD(r >= 0 && r < items(), "Sheet line out of range: ", row);
  
  return r;
} 

int TGrid_control::visible_rows() const
{
  return xi_get_visible_rows(_obj, NULL, NULL);
}

void TGrid_control::update(long n)
{
  if (n >= 0)
  {
    const int riga = rec2row(n);
    if (riga >= 0)
    {                 
      XI_OBJ row;
      XI_MAKE_ROW(&row, _obj, riga);
      xi_cell_request(&row);           
    }
  }
  else
  {
    int num = 0;
    const long* handle = xi_get_list_info(_obj, &num);

    bool scroll_first = items() == 0;
    if (!scroll_first)
    {
      int first = 0, last = 0;
      xi_get_visible_rows(_obj, &first, &last);   
      n = handle[first];
      scroll_first = n > items();
    }
    
    if (scroll_first)
      xi_scroll(_obj, XI_SCROLL_FIRST);
    else
      xi_scroll_rec(_obj, n, NORMAL_COLOR, XI_ATR_ENABLED, 0);
  }  
}

void TGrid_control::select(long rec)
{     
  if (rec >= 0 && rec < items())
  {
    int rows;
    const long* handle = xi_get_list_info(_obj, &rows);
            
    int first = 0, last = 0;
    xi_get_visible_rows(_obj, &first, &last);

    if (rec < handle[first] || rec > handle[last])
      xi_scroll_rec(_obj, rec, NORMAL_COLOR, XI_ATR_ENABLED, 0);
  }  
}

void TGrid_control::set_focus_rec(long rec)
{
  if (rec < 0) 
    rec = selected();
  int r = rec2row(rec);
  if (r < 0)
  {
    select(rec);
    r = rec2row(rec);
  }                 
  
  const int c = _type[0] == 'C' ? 2 : 1;
  XI_OBJ cell; XI_MAKE_CELL(&cell, _obj, r, c);
  xi_set_focus(&cell);
}                                         

XI_OBJ* TGrid_control::find_column(
  int col) const    // @parm  Indice o identificatore colonna
{     
  CHECKD(col >= 0, "Bad column ", col);
  if (col < FIRST_FIELD)         // Se e' un indice trasformalo in identificatore
    col += FIRST_FIELD + 1000;
  
  int num;
  XI_OBJ** columns = xi_get_member_list(_obj, &num);
  for (int c = num-1; c >= 0; c--)
  {          
    if (columns[c]->cid == col)
      break;
  }  
  return c >= 0 ? columns[c] : NULL;
}
       
// Certified 75%
bool TGrid_control::event_handler(XI_OBJ* itf, XI_EVENT *xiev)
{
  BOOLEAN& refused = xiev->refused;   
  
  const bool handled = _grid->handler(xiev);
  if (handled)
    return !refused;

  switch (xiev->type)
  {
  case XIE_GET_FIRST:
    if (items() > 0L)
    {
      long n = items() * (long)xiev->v.rec_request.percent / 100L;
      if (n < 0L) n = 0L;
      xiev->v.rec_request.data_rec = n;
    }
    else
      refused = TRUE;
    break;
  case XIE_GET_LAST:
    xiev->v.rec_request.data_rec = items()-1;
    break;
  case XIE_GET_PREV:
  case XIE_GET_NEXT:
  {
    const long n = xiev->v.rec_request.spec_rec + (xiev->type == XIE_GET_NEXT ? +1 : -1) ;
    if (n < 0 || n >= items())
      refused = TRUE;
    else
      xiev->v.rec_request.data_rec = n;
  }
    break;
  case XIE_GET_PERCENT:
  {
    const long rec = xiev->v.get_percent.record;
    long n = items(); if (n <= 0) n = 1;
    xiev->v.get_percent.percent = int(rec * 100L / n);
  }
    break;
  case XIE_COL_MOVE:           
    if (xiev->v.column.in_fixed || 
        xiev->v.column.col_nbr < xi_get_fixed_columns(xiev->v.column.list))
      refused = TRUE;
    break;  
  case XIE_COL_SIZE:            
    break;  
  case XIE_SELECT:
    xiev->refused = TRUE;
    break;
  case XIE_CELL_REQUEST:
    if (xiev->v.cell_request.col_nbr == 0)
    {
      if (xiev->v.cell_request.len > 1)
      {
        sprintf(xiev->v.cell_request.s, "%ld", xiev->v.cell_request.rec);
        xiev->v.cell_request.color = NORMAL_COLOR;        
      }  
    }
    break;
  default:
    break;
  }
  
  return !refused;
}

///////////////////////////////////////////////////////////
// TGrid_field
///////////////////////////////////////////////////////////

void TGrid_field::create(WINDOW parent)
{ 
  _ctl = new TGrid_control(parent, dlg(), 
                           _ctl_data._x, _ctl_data._y, 
                           _ctl_data._width, _ctl_data._size, 
                           _ctl_data._flags, _ctl_data._park,
                           this);
}

void TGrid_field::parse_head(TScanner& scanner)
{
  _ctl_data._width  = scanner.integer();
  _ctl_data._height = scanner.integer();
  if (_ctl_data._height == 0) 
    _ctl_data._height = -1;
}

bool TGrid_field::parse_item(TScanner& scanner)
{
  if (scanner.key() == "IT")
  {
    _ctl_data._park.add(scanner.string());
    return TRUE;
  }
  return TMask_field::parse_item(scanner);
}   


bool TGrid_field::handler(XI_EVENT* xiev)
{ 
  if (xiev->type == XIE_CELL_REQUEST)
  {                         
    const long& rec = xiev->v.cell_request.rec;
    const short& col = xiev->v.cell_request.col_nbr;

    if (col == 3)  
    {
      strcpy(xiev->v.cell_request.s, 
              "Questa e' una descrizioncina sgarsolina sgarsolina,"
              " che non doverebbe stare in una sola righina");
      
      xiev->v.cell_request.back_color = rec % 7 ? COLOR_YELLOW : COLOR_CYAN;
      return TRUE;
    }
  }
  return FALSE;
}

long TGrid_field::items() const
{
  return 30000L;
}

///////////////////////////////////////////////////////////
// TGrid_mask
///////////////////////////////////////////////////////////

class TGrid_mask : public TMask
{
  TEsercizi_contabili _esercizi;

protected:  // TMask
  virtual TMask_field* parse_field(TScanner& sc);
  
  static bool data_handler(TMask_field& f, KEY k);
  
public:
  const TEsercizi_contabili& esercizi() const { return _esercizi; }
  TEsercizi_contabili& esercizi() { return _esercizi; }

  TGrid_mask(const char* name);
  virtual ~TGrid_mask() { }
}; 

TGrid_mask::TGrid_mask(const char* name) 
{
  read_mask(name, 0, 0);
  
  set_handler(F_DADATA, data_handler);
  set_handler(F_ADATA, data_handler);
}

TMask_field* TGrid_mask::parse_field(TScanner& sc)
{         
  TMask_field* f;
  if (sc.key() == "SP")
    f = new TGrid_field(this);
  else
    f = TMask::parse_field(sc);
  return f;  
} 

bool TGrid_mask::data_handler(TMask_field& f, KEY k)
{           
  bool ok = TRUE;
  if (f.to_check(k) && !f.empty())
  {                        
    const TGrid_mask& gm = (const TGrid_mask&)f.mask();
    int codice_esercizio = gm.get_int(F_ESERCIZIO);
    if (codice_esercizio == 0)
    {
      const short id_altra_data = f.dlg() == F_DADATA ? F_ADATA : F_DADATA;
      const TDate d = gm.get(id_altra_data);
      if (d.ok())
        codice_esercizio = gm.esercizi().date2esc(d);
    }   
    const TDate d = f.get();
    const int esercizio = gm.esercizi().date2esc(d);
    if (codice_esercizio != 0)
    {
      if (esercizio != codice_esercizio)
        ok = error_box("La data deve appartenere all'esercizio %d", codice_esercizio);
    }
    else
    {
      if (esercizio == 0)
        ok = error_box("La data deve appartenere ad un esercizio contabile");
    }    
  }
  return ok;
}
 
///////////////////////////////////////////////////////////
// TMastrini_video
///////////////////////////////////////////////////////////

class TMastrini_video : public TApplication
{
  TGrid_mask* _gm;

protected:
  virtual bool create();
  virtual bool menu(MENU_TAG);
  virtual void on_firm_change();
};

bool TMastrini_video::create()
{ 
  _gm = NULL;          
  dispatch_e_menu(BAR_ITEM(1));
  return TRUE;
} 

void TMastrini_video::on_firm_change()
{
  if (_gm)
    _gm->esercizi().update();
}

bool TMastrini_video::menu(MENU_TAG)
{
  _gm = new TGrid_mask("cg3600a");
  KEY key = 0;
  while (key != K_QUIT)
  {
    if (key == 0)
    {                                     
      const TEsercizi_contabili& esercizi = _gm->esercizi();
      const int codice_ultimo_esercizio = esercizi.last();
      if (codice_ultimo_esercizio > 0)
      {
        const TEsercizio& esercizio = esercizi.esercizio(codice_ultimo_esercizio);
        _gm->set(F_ESERCIZIO, codice_ultimo_esercizio);
        _gm->set(F_DADATA, esercizio.inizio());
        _gm->set(F_ADATA, esercizio.fine());
      }
    }
    else
    {
      _gm->reset(F_SOTTOCONTO);  // Azzera sottoconto
      _gm->reset(F_CLIENTE);     // Azzera cliente
      _gm->reset(F_FORNITORE);   // Azzera fornitore
      _gm->reset(F_DACAUSALE);   // Azzera causali
      _gm->reset(F_ACAUSALE);
    }
    key = _gm->run();
  } 
  delete _gm;
  
  return FALSE;
}

int cg3600(int argc, char* argv[])
{          
  TMastrini_video mv;
  mv.run(argc, argv, "Mastrini");
  return 0;
}