// -*- c++ -*-
/* $Id: optioncontext.ccg,v 1.4 2004/10/30 14:25:45 murrayc Exp $ */

/* Copyright (C) 2002 The gtkmm Development Team
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free
 * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

#include <glibmm/utility.h>
#include <glibmm/exceptionhandler.h>
#include <glib.h>

namespace Glib
{

  namespace Private
  {
    static const gchar* SignalProxy_translate_gtk_callback (const gchar* str, gpointer data)
    {
      Glib::ustring translated_str;
      Glib::OptionContext::SlotTranslate* the_slot =
        static_cast<Glib::OptionContext::SlotTranslate*>(data);

      try
      {
        translated_str = (*the_slot)(str);
      }
      catch(...)
      {
        Glib::exception_handlers_invoke();
      }
      return translated_str.c_str ();
    }

    static void SignalProxy_translate_gtk_callback_destroy (gpointer data)
    {
      delete static_cast<Glib::OptionContext::SlotTranslate*>(data);
    }

  } //namespace Private

OptionContext::OptionContext(const Glib::ustring& parameter_string)
: gobject_( g_option_context_new(parameter_string.c_str()) ),
  has_ownership_(true)
{
}

OptionContext::OptionContext(GOptionContext* castitem, bool take_ownership)
: gobject_(castitem),
  has_ownership_(take_ownership)
{
}

OptionContext::~OptionContext()
{
  if(has_ownership_)
    g_option_context_free(gobj());
    
  gobject_ = 0;
}

void OptionContext::add_group(OptionGroup& group)
{
  //Strangely, GObjectContext actually takes ownership of the GOptionGroup, deleting it later.
  g_option_context_add_group(gobj(), (group).gobj_give_ownership());
}

void OptionContext::set_main_group(OptionGroup& group)
{
  //Strangely, GObjectContext actually takes ownership of the GOptionGroup, deleting it later.
  g_option_context_set_main_group(gobj(), (group).gobj_give_ownership());
}


/*
OptionGroup OptionContext::get_main_group() const
{
  const GOptionGroup* cobj = g_option_context_get_main_group(const_cast<GOptionContext*>( gobj()) );
  OptionGroup cppObj(const_cast<GOptionGroup*>(cobj), true); // take_copy
  return cppObj;
}

*/

void OptionContext::set_translate_func (const SlotTranslate& slot)
{
  //Create a copy of the slot. A pointer to this will be passed through the callback's data parameter.
  //It will be deleted when SignalProxy_translate_gtk_callback_destroy() is called.
  SlotTranslate* slot_copy = new SlotTranslate(slot);

  g_option_context_set_translate_func(
      gobj(), &Private::SignalProxy_translate_gtk_callback, slot_copy,
      &Private::SignalProxy_translate_gtk_callback_destroy);
}

Glib::ustring OptionContext::get_help(bool main_help) const
{
  return Glib::convert_return_gchar_ptr_to_ustring(g_option_context_get_help(const_cast<GOptionContext*>(gobj()), static_cast<int>(main_help), 0));
}

} // namespace Glib
