#include "cellrendererlist.h"
#include "popupentry.h"
#include <gtkmm.h>


namespace
{

struct PopupColumns : public Gtk::TreeModel::ColumnRecord
{
  Gtk::TreeModelColumn<Glib::ustring> item;
  PopupColumns() { add(item); }
};

const PopupColumns& popup_columns()
{
  static const PopupColumns columns;
  return columns;
}

} // anonymous namespace


CellRendererList::CellRendererList()
:
  Glib::ObjectBase  (typeid(CellRendererList)),
  CellRendererPopup (),
  list_store_       (Gtk::ListStore::create(popup_columns())),
  tree_view_        (list_store_)
{
  tree_view_.set_headers_visible(false);
  tree_view_.append_column("", popup_columns().item);
  tree_view_.signal_button_release_event().connect(
      SigC::slot(*this, &Self::on_tree_view_button_release_event));

  const Glib::RefPtr<Gtk::TreeSelection> selection = tree_view_.get_selection();
  selection->set_mode(Gtk::SELECTION_BROWSE);
  selection->signal_changed().connect(SigC::slot(*this, &Self::on_tree_selection_changed));

  Gtk::Frame *const frame = new Gtk::Frame();
  get_popup_window()->add(*Gtk::manage(frame));

  frame->add(tree_view_);
  frame->set_shadow_type(Gtk::SHADOW_OUT);
  frame->show_all();

  set_focus_widget(tree_view_);
}

CellRendererList::~CellRendererList()
{}

void CellRendererList::append_list_item(const Glib::ustring& text)
{
  Gtk::TreeModel::Row row = *list_store_->append();
  row[popup_columns().item] = text;
}

Glib::ustring CellRendererList::get_selected_item()
{
  if(const Gtk::TreeModel::iterator selected = tree_view_.get_selection()->get_selected())
  {
    return (*selected)[popup_columns().item];
  }

  return Glib::ustring();
}

void CellRendererList::on_show_popup(const Glib::ustring& path, int x1, int y1, int x2, int y2)
{
  tree_view_.set_size_request(x2 - x1, -1);

  CellRendererPopup::on_show_popup(path, x1, y1, x2, y2);
}

bool CellRendererList::on_tree_view_button_release_event(GdkEventButton* event)
{
  if(event->button == 1)
  {
    hide_popup();
    return true;
  }

  return false;
}

void CellRendererList::on_tree_selection_changed()
{
  get_popup_entry()->set_text(get_selected_item());
}