/* -*- 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"

#define luaL_checkbool(L, i) \
  (lua_isboolean(L,i) ? lua_toboolean(L,i) : luaL_checkint(L,i))

typedef struct wdg_userdata {
  Widget *widget;
} wdg_userdata;

static int wdg_name(lua_State *L)
{
  wdg_userdata *wdgu;

  wdgu = (wdg_userdata *)luaL_checkudata(L, 1, "Widget");
  luaL_argcheck(L, wdgu, 1, "widget expected");

  lua_pushstring(L, wdgu->widget->name().toStdString().c_str());

  return 1;
}

static int wdg_type(lua_State *L)
{
  wdg_userdata *wdgu;

  wdgu = (wdg_userdata *)luaL_checkudata(L, 1, "Widget");
  luaL_argcheck(L, wdgu, 1, "widget expected");

  // return error code
  lua_pushstring(L, wdgu->widget->type().toStdString().c_str());

  return 1;
}

static int wdg_value(lua_State *L)
{
  wdg_userdata *wdgu;

  wdgu = (wdg_userdata *)luaL_checkudata(L, 1, "Widget");
  luaL_argcheck(L, wdgu, 1, "widget expected");

  lua_pushstring(L, wdgu->widget->getValue().toStdString().c_str());

  return 1;
}

static int wdg_set_value(lua_State *L)
{
  wdg_userdata *wdgu;

  wdgu = (wdg_userdata *)luaL_checkudata(L, 1, "Widget");
  luaL_argcheck(L, wdgu, 1, "widget expected");

  const char *val = luaL_checkstring(L, 2);

  wdgu->widget->setValue(val);

  return 0;
}

static int wdg_enabled(lua_State *L)
{
  wdg_userdata *wdgu;

  wdgu = (wdg_userdata *)luaL_checkudata(L, 1, "Widget");
  luaL_argcheck(L, wdgu, 1, "widget expected");

  lua_pushboolean(L, wdgu->widget->isDisabled() == false);

  return 1;
}

static int wdg_set_enabled(lua_State *L)
{
  wdg_userdata *wdgu;

  wdgu = (wdg_userdata *)luaL_checkudata(L, 1, "Widget");
  luaL_argcheck(L, wdgu, 1, "widget expected");

  bool val = luaL_checkbool(L, 2);

  if(val) wdgu->widget->enable();
  else wdgu->widget->disable();
  
  return 0;
}

static int wdg_visible(lua_State *L)
{
  wdg_userdata *wdgu;

  wdgu = (wdg_userdata *)luaL_checkudata(L, 1, "Widget");
  luaL_argcheck(L, wdgu, 1, "widget expected");

  lua_pushboolean(L, wdgu->widget->getVisibility());

  return 1;
}

static int wdg_set_visible(lua_State *L)
{
  wdg_userdata *wdgu;

  wdgu = (wdg_userdata *)luaL_checkudata(L, 1, "Widget");
  luaL_argcheck(L, wdgu, 1, "widget expected");

  bool val = luaL_checkbool(L, 2);

  wdgu->widget->setVisibility(val);
  
  return 0;
}

static int wdg_valid(lua_State *L)
{
  wdg_userdata *wdgu;

  wdgu = (wdg_userdata *)luaL_checkudata(L, 1, "Widget");
  luaL_argcheck(L, wdgu, 1, "widget expected");

  lua_pushboolean(L, wdgu->widget->isValid());

  return 1;
}

static int wdg_set_valid(lua_State *L)
{
  wdg_userdata *wdgu;

  wdgu = (wdg_userdata *)luaL_checkudata(L, 1, "Widget");
  luaL_argcheck(L, wdgu, 1, "widget expected");

  bool val = luaL_checkbool(L, 2);

  wdgu->widget->setValid(val);
  
  return 0;
}

static int wdg_close(lua_State *L)
{
  wdg_userdata *wdgu;

  wdgu = (wdg_userdata *)luaL_checkudata(L, 1, "Widget");
  luaL_argcheck(L, wdgu, 1, "widget expected");

  return 0;
}

static const struct luaL_reg wdg_meths[] =
{
  {"name", wdg_name},
  {"type", wdg_type},

  {"value", wdg_value},
  {"setValue", wdg_set_value},

  {"enabled", wdg_enabled},
  {"setEnabled", wdg_set_enabled},

  {"visible", wdg_visible},
  {"setVisible", wdg_set_visible},

  {"valid", wdg_valid},
  {"setValid", wdg_set_valid},

  {"close", wdg_close},
  {"__gc", wdg_close},
  {NULL, NULL}
};

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

  luaL_getmetatable(L, "Widget");
  lua_setmetatable(L, -2);

  wdgu->widget = widget;

  return 1;
}

void register_widget(lua_State *L)
{
  luaL_newmetatable(L, "Widget");

  // metatable.__index = metatable
  lua_pushliteral(L, "__index");
  lua_pushvalue(L, -2);
  lua_rawset(L, -3);

  luaL_openlib(L, NULL, wdg_meths, 0);
}