#include <applicat.h>
#include <execp.h>
#include <mask.h>
#include <progind.h>
#include <utility.h>
#include <urldefid.h>

#if XVT_OS == XVT_OS_WIN
extern "C" 
{ 
#include <cpb.h> 
}
#include <dos.h>
#else
#include <dirent.h>
#endif

#include "ba0.h"

///////////////////////////////////////////////////////////
// Picture Mask
///////////////////////////////////////////////////////////

class TPicture_mask : public TMask
{
  static short _id;
  static PICTURE _picture;

protected:
  virtual void handler(WINDOW win, EVENT* ep);
  void set_picture(short id);

public:
  TPicture_mask(const char* name, int dx, int dy, short picture_id);
  void reset();
};

short TPicture_mask::_id = 0;
PICTURE TPicture_mask::_picture = 0L;

void TPicture_mask::set_picture(short id)
{
  if (id != _id)
  {
    _id = id;
#if XVT_OS == XVT_OS_WIN
    if (_picture) picture_free(_picture);
    _picture = cpb_picture_load(id);
#endif
  }
}

void TPicture_mask::reset()
{
#if XVT_OS == XVT_OS_WIN
  if (_picture)
  {
    picture_free(_picture);
    _picture = 0L;
    _id = 0;
  }  
#endif
}

TPicture_mask::TPicture_mask(const char* name, int dx, int dy, short pic)
: TMask(name, 1, dx, dy)
{
  set_picture(pic);
}



void TPicture_mask::handler(WINDOW win, EVENT* ep)
{
  TMask::handler(win, ep);

  if (ep->type == E_UPDATE)
  {
#if XVT_OS == XVT_OS_WIN
    if (_picture)
      cpb_win_picture_draw_at(win, _picture, 1, CHARY<<1);
    else
#endif
    {
      const int max = 16;
      for (int i = 0; i < max; i++)
      {
        TTemp_window w(win);
        w.rect(i*2, i, max-i*2, max-i);
      }
    }
  }
}

///////////////////////////////////////////////////////////
// Menu application
///////////////////////////////////////////////////////////

class TMenu_application : public TApplication
{
  const char* _name;

  enum { MAXLEVEL = 1024 };
  int _first[MAXLEVEL];
  TArray _menu;         // TAG|DESCRIPTION|ACTION

  int _level, _max;

protected:
  void test_temp() const;
  void load_menu();
  int do_level();
  virtual bool create();
  virtual bool menu(MENU_TAG m);

public:
  TMenu_application(const char* name) : _name(name) {}
};


static short last_button = 0;

void TMenu_application::load_menu()
{
  TScanner s(_name);

  _max = -1;
  while (s.line().not_empty())
  {
    TToken_string* ts = new TToken_string(s.token());
    int l = ts->get_int();

    if (l < _max)
    {
      error_box("Item of level %d while %d was expected)", l, _max);
      l = _max;
    }
    if (l > _max)
    {
      if (l >= MAXLEVEL)
      {
        error_box("Too many menu levels: %d", l);
        l = _max;
      }
      _first[_max = l] = _menu.items();
    }

    _menu.add(ts);
  }
  _first[++_max] = _menu.items();
}


HIDDEN bool menu_item_handler(TMask_field&f, KEY k)
{
  if (k == K_SPACE)
  {
    last_button = f.dlg();
    f.mask().stop_run(K_AUTO_ENTER);
  }     
  return TRUE;
}


int TMenu_application::do_level()
{
  const int first = _first[_level];
  const int last = _first[_level+1];
  TToken_string& row = (TToken_string&)_menu[first];
  const TString80 head(row.get(1));

  const int width = 72;
  const int heigth = 18;
  const int bwidth = 20;
  const int x = width-bwidth-12;
  const short pic = BA0_PICTURE+(short)row.get_int();
  TPicture_mask menu(head, width, heigth, pic);

  int y = 1;

#if XVT_OS == XVT_OS_WIN
  TString16 t(format("#%d", BMP_STOPREC));
#else
  TString16 t;
#endif

  for (int i = first+1; i < last; i++, y++)
  {
    TToken_string& row = (TToken_string&)_menu[i];
    TString80 item(row.get(1));
    if (isdigit(*row.get())) item << "...";
    menu.add_static(-1, 0, item, x+4, y);
    menu.add_button(100+y, 0, t, x, y, 1, 1);
    menu.set_handler(100+y, menu_item_handler);
  }

  t = first ? "Menu precedente" : "Fine";
  menu.add_button(first ? DLG_CANCEL : DLG_QUIT, 0, t, -22, -2, bwidth, 2);
  if (first)
    menu.add_button(DLG_QUIT, 0, "Fine", -12, -2, bwidth, 2);

  const int k = menu.run();
  int m = 0;
  switch (k)
  {       
  case K_ESC:
    m = -1; break;
  case K_QUIT:
    menu.reset();
    m = -2; break;
  default:
    m = first+last_button-100; break;
  }
  return m;
}


void TMenu_application::test_temp() const
{
  TFilename name; name.tempdir();
  name << "/" << "ci*";
#if XVT_OS == XVT_OS_WIN
  struct _find_t f;
  if (_dos_findfirst(name, _A_NORMAL, &f) == 0 &&
      yesno_box("Si desidera cancellare i file temporanei?"))
  {   
    TIndwin pi(40, "Cancellazione file temporanei residui", FALSE, FALSE);
    TFilename dir; dir.tempdir();
    do
    {
      name = dir; 
      name << "/" << f.name;
      remove(name);
    } while (_dos_findnext(&f) == 0);
  }
#endif
}


bool TMenu_application::create()
{
  test_temp();
  load_menu();
  dispatch_e_menu(BAR_ITEM(1));
  return TRUE;
}

bool TMenu_application::menu(MENU_TAG)
{
  int refarray[256];
  int i = 0;

  _level = 0;
  while (i >= 0)
  {
    const int m = do_level();
    if (m >= 0)
    {
      TToken_string& row = (TToken_string&)_menu[m];
      const char* option = row.get(2);
      if (option && *option)
      {
        const int l = atoi(option);
        if (l > 0)
        {
          const char* flags = row.get();
          if (flags && strchr(flags, 'F') != NULL) 
            set_firm();
          refarray[i++] = _level;
          if (l < _max) _level = l;
        }
        else
        {
          TExternal_app a(option);
          a.run();
        }
      }
    }
    else 
    {
      if (m < -1) break;
      _level = (--i >= 0) ? refarray[i] : 0;
    }  
  }

  return FALSE;
}

int main(int argc, char** argv)
{
  const char* menu = (argc < 2) ? "prassi.mnu" : argv[1];
  TMenu_application ma(menu);
  ma.run(argc, argv, "Menu Principale");
  return TRUE;
}