#include "dialogs.h"
#include "juci.h"
#include "singletons.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::Window(Gtk::WindowType::WINDOW_POPUP), label(text) {
  auto font_desc=label.get_pango_context()->get_font_description();
  font_desc.set_size(static_cast<int>(round(static_cast<double>(font_desc.get_size())*1.25)));
  label.override_font(font_desc);
  add(label);
  
  property_decorated()=false;
  set_accept_focus(false);
  set_skip_taskbar_hint(true);
  
  auto g_application=g_application_get_default();
  auto gio_application=Glib::wrap(g_application, true);
  auto application=Glib::RefPtr<Application>::cast_static(gio_application);
  set_transient_for(*application->window);
  set_position(Gtk::WindowPosition::WIN_POS_CENTER_ON_PARENT);
  label.signal_draw().connect([this](const Cairo::RefPtr<Cairo::Context>& cr) {
    label_drawn=true;
    return false;
  });
  show_all();
}

void Dialog::Message::wait_until_drawn() {
  while(gtk_events_pending() || !label_drawn)
    gtk_main_iteration();
}

std::string Dialog::gtk_dialog(const std::string &title,
                        const std::vector<std::pair<std::string, Gtk::ResponseType>> &buttons,
                        Gtk::FileChooserAction gtk_options,
                        const std::string &file_name) {
  Gtk::FileChooserDialog dialog(title, gtk_options);
  
  auto g_application=g_application_get_default(); //TODO: Post issue that Gio::Application::get_default should return pointer and not Glib::RefPtr
  auto gio_application=Glib::wrap(g_application, true);
  auto application=Glib::RefPtr<Application>::cast_static(gio_application);
  dialog.set_transient_for(*application->window);
  
  auto current_path=application->window->notebook.get_current_folder();
  if(current_path.empty())
    current_path=boost::filesystem::current_path();
  gtk_file_chooser_set_current_folder((GtkFileChooser*)dialog.gobj(), current_path.string().c_str());

  if (!file_name.empty())
    gtk_file_chooser_set_filename((GtkFileChooser*)dialog.gobj(), file_name.c_str());
  dialog.set_position(Gtk::WindowPosition::WIN_POS_CENTER_ALWAYS);
  
  for (auto &button : buttons) 
    dialog.add_button(button.first, button.second);
  return dialog.run() == Gtk::RESPONSE_OK ? dialog.get_filename() : "";
}