private void AddNavigationButtons()
{
if (TrackCount <= 1)
{
return;
}
nav_backward_button = new Button(Stock.GoBack);
nav_backward_button.UseStock = true;
nav_backward_button.Clicked += delegate { NavigateBackward(); };
nav_backward_button.Show();
TooltipSetter.Set(tooltip_host, nav_backward_button, Catalog.GetString("Show the previous track"));
nav_forward_button = new Button(Stock.GoForward);
nav_forward_button.UseStock = true;
nav_forward_button.Clicked += delegate { NavigateForward(); };
nav_forward_button.Show();
TooltipSetter.Set(tooltip_host, nav_forward_button, Catalog.GetString("Show the next track"));
ActionArea.PackStart(nav_backward_button, false, false, 0);
ActionArea.PackStart(nav_forward_button, false, false, 0);
ActionArea.SetChildSecondary(nav_backward_button, true);
ActionArea.SetChildSecondary(nav_forward_button, true);
}