/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set et sw=2 ts=2: */
/***************************************************************************
 *            luawidget.cc
 *
 *  Tue Aug  3 10:17:02 CEST 2010
 *  Copyright 2010 Bent Bisballe Nyeng
 *  deva@aasimon.org
 ****************************************************************************/

/*
 *  This file is part of Pracro.
 *
 *  Pracro is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  Pracro 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 General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with Pracro; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA.
 */
#include "luawidget.h"

#include "widgets.h"

#include "debug.h"

/**
 ** Copied from lauxlib.c, but modified return NULL upon error instead of
 ** casting a lua error.
 **/
void *luaL_isudata (lua_State *L, int ud, const char *tname)
{
  void *p = lua_touserdata(L, ud);
  if (p != NULL) {  /* value is a userdata? */
    if (lua_getmetatable(L, ud)) {  /* does it have a metatable? */
      lua_getfield(L, LUA_REGISTRYINDEX, tname);  /* get correct metatable */
      if (lua_rawequal(L, -1, -2)) {  /* does it have the correct mt? */
        lua_pop(L, 2);  /* remove both metatables */
        return p;
      }
    }
  }
  //  luaL_typerror(L, ud, tname);  /* else error */
  return NULL;  /* to avoid warnings */
}

int wdg_make_widget(lua_State *L, Widget *widget)
{
  wdg_userdata *wdgu;
  wdgu = (wdg_userdata *)lua_newuserdata(L, sizeof(wdg_userdata));

  if(widget->type() == "combobox") luaL_getmetatable(L, "ComboBox");
  else if(widget->type() == "checkbox") luaL_getmetatable(L, "CheckBox");
  else if(widget->type() == "lineedit") luaL_getmetatable(L, "LineEdit");
  else luaL_getmetatable(L, "Widget");
  
  lua_setmetatable(L, -2);

  wdgu->widget = widget;

  return 1;
}

void register_widgets(lua_State *L)
{
  register_widget(L);
  register_checkbox(L);
  register_combobox(L);
  register_lineedit(L);
}