jQuery.fn.delayedActivation = function () {
    $(this).each(function () {
        if (Page.keys.control) {
            return;
        }
        let $button = $(this);
        if (!$button.hasClass('delayed-activation')) {
            return;
        } else if ($button.data('running')) {
            return;
        }
        $button.data('running', 1);
        let activateOn = new Date();
        activateOn.setSeconds(activateOn.getSeconds() + $button.data('activation-delay'));
        $button.addClass('disabled');
        let text = $button.html();
        $button.html(`${text} (${$button.data('activation-delay')})`);
        let interval = setInterval(
            function () {
                let now = new Date();
                let seconds = parseInt((activateOn - now) / 1000);
                if (seconds > 0) {
                    $button.html(`${text} (${seconds})`);
                } else {
                    $button.removeClass('disabled');
                    $button.html(text);
                    clearInterval(interval);
                }
            },
            900
        );
    });
};