// fluid.C

// Please see README for some information about the construction of this
// rather nasty piece of code.

const char *copyright =
"The FLTK user interface designer version 0.99\n"
"Copyright \xa9 1998 Bill Spitzak\n"
"\n"
"This library is free software; you can redistribute it and/or "
"modify it under the terms of the GNU Library General Public "
"License as published by the Free Software Foundation; either "
"version 2 of the License, or (at your option) any later version.\n"
"\n"
"This library is distributed in the hope that it will be useful, "
"but WITHOUT ANY WARRANTY; without even the implied warranty of "
"MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. "
"See the GNU Library General Public License for more details.\n"
"\n"
"You should have received a copy of the GNU Library General Public "
"License along with this library; if not, write to the Free Software "
"Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 "
"USA.\n"
"\n"
"Written by Bill Spitzak spitzak@d2.com\n";

#include <FL/Fl.H>
#include <FL/Fl_Double_Window.H>
#include <FL/Fl_Box.H>
#include <FL/Fl_Button.H>
#include <FL/Fl_Hold_Browser.H>
#include <FL/Fl_Menu_Bar.H>
#include <FL/Fl_Input.H>
#include <FL/fl_ask.H>
#include <FL/fl_draw.H>
#include <FL/fl_file_chooser.H>
#include <FL/fl_message.H>
#include <FL/filename.H>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <errno.h>

#if defined(WIN32) && !defined(CYGNUS)
# include <direct.h>
#else
# include <unistd.h>
#endif

#include "about_panel.H"

#include "Fl_Type.H"

////////////////////////////////////////////////////////////////

void nyi(Fl_Widget *,void *) {
    fl_message("That's not yet implemented, sorry");
}

static const char *filename;
void set_filename(const char *c);
int modflag;

static char* pwd;
static char in_source_dir;
void goto_source_dir() {
  if (in_source_dir) return;
  if (!filename || !*filename) return;
  const char *p = filename_name(filename);
  if (p <= filename) return; // it is in the current directory
  char buffer[1024];
  strcpy(buffer,filename);
  int n = p-filename; if (n>1) n--; buffer[n] = 0;
  if (!pwd) {
    pwd = getcwd(0,1024);
    if (!pwd) {fprintf(stderr,"getwd : %s\n",strerror(errno)); return;}
  }
  if (chdir(buffer)<0) {fprintf(stderr, "Can't chdir to %s : %s\n",
				buffer, strerror(errno)); return;}
  in_source_dir = 1;
}

void leave_source_dir() {
  if (!in_source_dir) return;
  if (chdir(pwd)<0) {fprintf(stderr, "Can't chdir to %s : %s\n",
				pwd, strerror(errno));}
  in_source_dir = 0;
}
  
Fl_Window *main_window;

void exit_cb(Fl_Widget *,void *) {
  if (!modflag || fl_ask("Exit without saving changes?")) exit(0);
}

void save_cb(Fl_Widget *, void *v) {
  const char *c = filename;
  if (v || !c || !*c) {
    if (!(c=fl_file_chooser("Save to:", "*.f[ld]", c))) return;
    set_filename(c);
  }
  if (!write_file(c)) {
    fl_show_message("Error writing", c, strerror(errno));
    return;
  }
  modflag = 0;
}

void open_cb(Fl_Widget *, void *v) {
  if (!v && modflag && !fl_ask("Discard changes?")) return;
  const char *c;
  if (!(c = fl_file_chooser("Open:", "*.f[ld]", filename))) return;
  if (!read_file(c, v!=0)) {
    fl_show_message("Can't read", c, strerror(errno));
    return;
  }
  if (!v) {set_filename(c); modflag = 0;}
  else modflag = 1;
}

void new_cb(Fl_Widget *, void *v) {
  if (!v && modflag && !fl_ask("Discard changes?")) return;
  const char *c;
  if (!(c = fl_file_chooser("New:", "*.f[ld]", 0))) return;
  delete_all();
  set_filename(c);
  modflag = 0;
}

static int compile_only;

const char* header_file_name = ".H";
const char* code_file_name = ".C";

void write_cb(Fl_Widget *, void *) {
  if (!filename) {
    save_cb(0,0);
    if (!filename) return;
  }
  char cname[1024];
  char hname[1024];
  if (*code_file_name == '.') {
    strcpy(cname,filename_name(filename));
    filename_setext(cname, code_file_name);
  } else {
    strcpy(cname, code_file_name);
  }
  if (*header_file_name == '.') {
    strcpy(hname,filename_name(filename));
    filename_setext(hname, header_file_name);
  } else {
    strcpy(hname, header_file_name);
  }
  int x = write_code(cname,hname);
  strcat(cname, "/"); strcat(cname,header_file_name);
  if (compile_only) {
    if (!x) {fprintf(stderr,"%s : %s\n",cname,strerror(errno)); exit(1);}
  } else {
    if (!x) {
      fl_show_message("Can't write", cname, strerror(errno));
    } else {
      fl_show_message("Wrote", cname, 0);
    }
  }
}

void openwidget_cb(Fl_Widget *, void *) {
  if (!Fl_Type::current) {
    fl_message("Please select a widget");
    return;
  }
  Fl_Type::current->open();
}

void toggle_overlays(Fl_Widget *,void *);

void select_all_cb(Fl_Widget *,void *);

void group_cb(Fl_Widget *, void *);

void ungroup_cb(Fl_Widget *, void *);

extern int pasteoffset;
static int ipasteoffset;

static char* cutfname() {
#ifdef WIN32
  return ".fluid_cut_buffer";
#else
  static char name[256] = "~/.fluid_cut_buffer";
  static char beenhere;
  if (!beenhere) {beenhere = 1; filename_expand(name,name);}
  return name;
#endif
}

void copy_cb(Fl_Widget*, void*) {
  if (!Fl_Type::current) return;
  ipasteoffset = 10;
  if (!write_file(cutfname(),1)) {
    fl_show_message("Can't write", cutfname(), strerror(errno));
    return;
  }
}

extern void select_only(Fl_Type *);
void cut_cb(Fl_Widget *, void *) {
  if (!Fl_Type::current) return;
  ipasteoffset = 0;
  Fl_Type *p = Fl_Type::current->parent;
  while (p && p->selected) p = p->parent;
  if (!write_file(cutfname(),1)) {
    fl_show_message("Can't write", cutfname(), strerror(errno));
    return;
  }
  delete_all(1);
  if (p) select_only(p);
}

extern int force_parent, gridx, gridy;

void paste_cb(Fl_Widget*, void*) {
  if (ipasteoffset) force_parent = 1;
  pasteoffset = ipasteoffset;
  if (gridx>1) pasteoffset = ((pasteoffset-1)/gridx+1)*gridx;
  if (gridy>1) pasteoffset = ((pasteoffset-1)/gridy+1)*gridy;
  if (!read_file(cutfname(), 1)) {
    fl_show_message("Can't read", cutfname(), strerror(errno));
  }
  pasteoffset = 0;
  ipasteoffset += 10;
  force_parent = 0;
}

void earlier_cb(Fl_Widget*,void*);

void later_cb(Fl_Widget*,void*);

Fl_Type *sort(Fl_Type *parent);

static void sort_cb(Fl_Widget *,void *) {
  sort((Fl_Type*)0);
}

void show_alignment_cb(Fl_Widget *, void *);

void about_cb(Fl_Widget *, void *) {
  if (!about_panel) make_about_panel(copyright);
  copyright_box->hide();
  display_group->show();
  about_panel->show();
}

////////////////////////////////////////////////////////////////

extern Fl_Menu_Item New_Menu[];

Fl_Menu_Item Main_Menu[] = {
{"File",0,0,0,FL_SUBMENU},
  {"New", FL_ALT+'N', new_cb, 0},
  {"Open...", FL_ALT+'O', open_cb, 0},
  {"Save", FL_ALT+'s', save_cb, 0},
  {"Save As...", FL_ALT+'S', save_cb, (void*)1},
  {"Merge...", FL_ALT+'i', open_cb, (void*)1, FL_MENU_DIVIDER},
  {"Write code", FL_ALT+'C', write_cb, 0},
  {"Quit", FL_ALT+'q', exit_cb},
  {0},
{"Edit",0,0,0,FL_SUBMENU},
  {"Undo", FL_ALT+'z', nyi},
  {"Cut", FL_ALT+'x', cut_cb},
  {"Copy", FL_ALT+'c', copy_cb},
  {"Paste", FL_ALT+'v', paste_cb},
  {"Select All", FL_ALT+'a', select_all_cb, 0, FL_MENU_DIVIDER},
  {"Open...", FL_F+1, openwidget_cb},
  {"Sort",0,sort_cb},
  {"Earlier", FL_F+2, earlier_cb},
  {"Later", FL_F+3, later_cb},
//{"Show", FL_F+5, show_cb},
//{"Hide", FL_F+6, hide_cb},
  {"Group", FL_F+7, group_cb},
  {"Ungroup", FL_F+8, ungroup_cb,0, FL_MENU_DIVIDER},
//{"Deactivate", 0, nyi},
//{"Activate", 0, nyi, 0, FL_MENU_DIVIDER},
  {"Overlays on/off",FL_ALT+'o',toggle_overlays},
  {"Preferences",FL_ALT+'p',show_alignment_cb},
  {0},
{"New", 0, 0, (void *)New_Menu, FL_SUBMENU_POINTER},
{"Help",0,0,0,FL_SUBMENU},
  {"About fluid",0,about_cb},
  {"Manual",0,nyi},
  {0},
{0}};

#define BROWSERWIDTH 300
#define BROWSERHEIGHT 500
#define WINWIDTH 300
#define MENUHEIGHT 30
#define WINHEIGHT (BROWSERHEIGHT+MENUHEIGHT)

extern void fill_in_New_Menu();

void make_main_window() {
  if (!main_window) {
    Fl_Widget *o;
    main_window = new Fl_Double_Window(WINWIDTH,WINHEIGHT,"fluid");
    main_window->box(FL_NO_BOX);
    o = make_widget_browser(0,MENUHEIGHT,BROWSERWIDTH,BROWSERHEIGHT);
    o->box(FL_FLAT_BOX);
    main_window->resizable(o);
    Fl_Menu_Bar *m = new Fl_Menu_Bar(0,0,BROWSERWIDTH,MENUHEIGHT);
    m->menu(Main_Menu);
    m->global();
    fill_in_New_Menu();
    main_window->end();
  }
}

void set_filename(const char *c) {
  if (filename) free((void *)filename);
  filename = strdup(c);
  if (main_window) main_window->label(filename);
}

////////////////////////////////////////////////////////////////

static int arg(int argc, char** argv, int& i) {
  if (argv[i][1] == 'c' && !argv[i][2]) {compile_only = 1; i++; return 1;}
  if (argv[i][1] == 'o' && !argv[i][2] && i+1 < argc) {
    code_file_name = argv[i+1]; i += 2; return 2;}
  if (argv[i][1] == 'h' && !argv[i][2]) {
    header_file_name = argv[i+1]; i += 2; return 2;}
  return 0;
}

#ifndef WIN32

#include <signal.h>
#ifdef _sigargs
#define SIGARG _sigargs
#else
#ifdef __sigargs
#define SIGARG __sigargs
#else
#define SIGARG int // you may need to fix this for older systems
#endif
#endif

static void sigint(SIGARG) {
  signal(SIGINT,sigint);
  exit_cb(0,0);
}

#endif

int main(int argc,char **argv) {
  int i = 1;
  if (!Fl::args(argc,argv,i,arg) || i < argc-1) {
    fprintf(stderr,"usage: %s <switches> name.fl\n"
" -c : write .C and .H and exit\n"
" -o <name> : .C output filename, or extension if <name> starts with '.'\n"
" -h <name> : .H output filename, or extension if <name> starts with '.'\n"
"%s\n", argv[0], Fl::help);
    return 1;
  }
  const char *c = argv[i];
  make_main_window();
  include_H_from_C=1;
  if (c) set_filename(c);
  if (!compile_only) {
    Fl::visual((Fl_Mode)(FL_DOUBLE|FL_INDEX));
    main_window->callback(exit_cb);
    main_window->show(argc,argv);
  }
  if (c && !read_file(c,0)) {
    if (compile_only) {
      fprintf(stderr,"%s : %s\n", c, strerror(errno));
      exit(1);
    }
    fl_show_message("Can't read", c, strerror(errno));
  }
  if (compile_only) {write_cb(0,0); exit(0);}
  modflag = 0;
#ifndef WIN32
  signal(SIGINT,sigint);
#endif
  return Fl::run();
}