#include "dialogs.h"
#include <cmath>

namespace sigc {
#ifndef SIGC_FUNCTORS_DEDUCE_RESULT_TYPE_WITH_DECLTYPE
  template <typename Functor>
  struct functor_trait<Functor, false> {
    typedef decltype (::sigc::mem_fun(std::declval<Functor&>(),
                                      &Functor::operator())) _intermediate;
    typedef typename _intermediate::result_type result_type;
    typedef Functor functor_type;
  };
#else
  SIGC_FUNCTORS_DEDUCE_RESULT_TYPE_WITH_DECLTYPE
#endif
}

Dialog::Message::Message(const std::string &text): Gtk::MessageDialog(text, false, Gtk::MessageType::MESSAGE_INFO, Gtk::ButtonsType::BUTTONS_NONE, true) {
  auto g_application=g_application_get_default();
  auto gio_application=Glib::wrap(g_application, true);
  auto application=Glib::RefPtr<Gtk::Application>::cast_static(gio_application);
  set_transient_for(*application->get_active_window());
  set_position(Gtk::WindowPosition::WIN_POS_CENTER_ON_PARENT);
  
  show_now();
  
  while(Gtk::Main::events_pending())
    Gtk::Main::iteration(false);
}

bool Dialog::Message::on_delete_event(GdkEventAny *event) {
  return true;
}

std::string Dialog::gtk_dialog(const boost::filesystem::path &path, const std::string &title,
                        const std::vector<std::pair<std::string, Gtk::ResponseType>> &buttons,
                        Gtk::FileChooserAction gtk_options) {
  Gtk::FileChooserDialog dialog(title, gtk_options);
  
  auto g_application=g_application_get_default();
  auto gio_application=Glib::wrap(g_application, true);
  auto application=Glib::RefPtr<Gtk::Application>::cast_static(gio_application);
  dialog.set_transient_for(*application->get_active_window());
  dialog.set_position(Gtk::WindowPosition::WIN_POS_CENTER_ON_PARENT);
  
  if(title=="Save File As")
    gtk_file_chooser_set_filename(reinterpret_cast<GtkFileChooser*>(dialog.gobj()), path.string().c_str());
  else if(!path.empty())
    gtk_file_chooser_set_current_folder(reinterpret_cast<GtkFileChooser*>(dialog.gobj()), path.string().c_str());
  else {
    boost::system::error_code ec;
    auto current_path=boost::filesystem::current_path(ec);
    if(!ec)
      gtk_file_chooser_set_current_folder(reinterpret_cast<GtkFileChooser*>(dialog.gobj()), current_path.string().c_str());
  }
  
  for (auto &button : buttons) 
    dialog.add_button(button.first, button.second);
  return dialog.run() == Gtk::RESPONSE_OK ? dialog.get_filename() : "";
}