_parent = -4;
_list = instance_create(0, 0, obj_screen_select_list);
_footer = instance_create(0, 410, obj_screen_select_footer);

init = function(arg0)
{
    _parent = arg0;
    _list.init(id);
    _footer.init(id);
    _list.reset();
    var latest_chapter = get_highest_revealed_chapter();
    _list.highlight_chapter(latest_chapter);
    _list.enable_input();
    _init = true;
};

fade_in = function()
{
    _list.fade_in();
    _footer.fade_in();
};

trigger_event = function(arg0, arg1 = 0)
{
    switch (arg0)
    {
        case "scroll_list_down":
            _list.disable_input();
            _footer.reset();
            _footer.highlight();
            _footer.enable_input();
            break;
        case "scroll_list_up":
            _list.disable_input();
            _footer.reset();
            _footer.highlight();
            _footer.enable_input();
            break;
        case "scroll_footer_down":
            _footer.reset();
            _footer.disable_input();
            _list.reset();
            _list.highlight();
            _list.enable_input();
            break;
        case "scroll_footer_up":
            _footer.reset();
            _footer.disable_input();
            _list.highlight_bottom();
            _list.enable_input();
            break;
        case "launch_game":
            _list.disable_input();
            _parent.trigger_event("launch_game", arg1);
            break;
        default:
            _parent.trigger_event(arg0, arg1);
            break;
    }
};