Tutorial.ConfirmButton

function run_confirmbutton (root) {
    confirm = new TK.ConfirmButton({
        label: "Do something unsafe",
        icon: "gear",
        label_confirm: "Are you sure?",
        icon_confirm: "questionmark",
        onconfirmed: function () { alert("Something unsafe was done!") }
    });
    root.append_child(confirm);
}