this.toggleDropdown = (dropdown) => {
        dropdown.dropdown();
        if(!dropdown.dropdown('is visible')) {
            dropdown.find('i.angle.right.icon').addClass('up');
            dropdown.find('i.angle.right.icon').removeClass('right');
        } else {
            dropdown.find('i.angle.up.icon').addClass('right');
            dropdown.find('i.angle.up.icon').removeClass('up');
        }
        dropdown.on("focusout", (e) => {
            e.stopImmediatePropagation();
            dropdown.find('i.angle.up.icon').addClass('right');
            dropdown.find('i.angle.up.icon').removeClass('up');
        });
    };