/* Copyright (C) 2006 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, see <https://www.gnu.org/licenses/>.
 */

#include <gtk/gtk.h>

#include <glibmm/ustring.h>

// This Signal Proxy allows the C++ coder to specify a sigc::slot instead of a static function.

static gboolean SignalProxy_Custom_gtk_callback(const GtkRecentFilterInfo* filter_info, gpointer data)
{
  const auto the_slot = static_cast<Gtk::RecentFilter::SlotCustom*>(data);

  try
  {
    // Create a suitable C++ instance to pass to the C++ method:
    Gtk::RecentFilter::Info cppInfo;
    cppInfo.contains = (Gtk::RecentFilterFlags)filter_info->contains;
    cppInfo.uri = Glib::convert_const_gchar_ptr_to_ustring(filter_info->uri);
    cppInfo.display_name = Glib::convert_const_gchar_ptr_to_ustring(filter_info->display_name);
    cppInfo.mime_type = Glib::convert_const_gchar_ptr_to_ustring(filter_info->mime_type);

    // Create string lists from char**s.

    for(int i = 0; filter_info->groups[i] != nullptr; ++i)
    {
      cppInfo.groups.emplace_back( Glib::convert_const_gchar_ptr_to_ustring(filter_info->groups[i]) );
    }
    for(int i = 0; filter_info->applications[i] != nullptr; ++i)
    {
      cppInfo.applications.emplace_back( Glib::convert_const_gchar_ptr_to_ustring(filter_info->applications[i]) );
    }

    cppInfo.age = filter_info->age;

    return (*the_slot)(cppInfo);
  }
  catch(...)
  {
    Glib::exception_handlers_invoke();
    return false; // arbitrary default;
  }
}

static void SignalProxy_Custom_gtk_callback_destroy(void* data)
{
  delete static_cast<Gtk::RecentFilter::SlotCustom*>(data);
}

namespace Gtk
{

RecentFilter::Info::Info()
: contains(Gtk::RECENT_FILTER_MIME_TYPE), //arbitrary default
  age(0)
{
}

void RecentFilter::add_custom(RecentFilterFlags needed, const SlotCustom& 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_Custom_gtk_callback_destroy() is called.
  auto slot_copy = new SlotCustom(slot);

  gtk_recent_filter_add_custom(gobj(), (GtkRecentFilterFlags)needed,
                               &SignalProxy_Custom_gtk_callback,
                               slot_copy,
                               &SignalProxy_Custom_gtk_callback_destroy);
}

} // namespace Gtk
