Google Navigation

Navigate through Google Search with a set of hotkeys.

ของเมื่อวันที่ 23-10-2021 ดู เวอร์ชันล่าสุด

คุณจะต้องติดตั้งส่วนขยาย เช่น Tampermonkey, Greasemonkey หรือ Violentmonkey เพื่อติดตั้งสคริปต์นี้

คุณจะต้องติดตั้งส่วนขยาย เช่น Tampermonkey หรือ Violentmonkey เพื่อติดตั้งสคริปต์นี้

คุณจะต้องติดตั้งส่วนขยาย เช่น Tampermonkey หรือ Violentmonkey เพื่อติดตั้งสคริปต์นี้

You will need to install an extension such as Tampermonkey or Userscripts to install this script.

You will need to install an extension such as Tampermonkey to install this script.

You will need to install a user script manager extension to install this script.

(I already have a user script manager, let me install it!)

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

(I already have a user style manager, let me install it!)

// ==UserScript==
// @name                Google Navigation
// @name:zh-TW          Google 快覽
// @name:zh-CN          Google 快覽
// @namespace           veringsek
// @match               http://*.google.com/search*
// @match               http://*.google.ad/search*
// @match               http://*.google.ae/search*
// @match               http://*.google.com.af/search*
// @match               http://*.google.com.ag/search*
// @match               http://*.google.com.ai/search*
// @match               http://*.google.al/search*
// @match               http://*.google.am/search*
// @match               http://*.google.co.ao/search*
// @match               http://*.google.com.ar/search*
// @match               http://*.google.as/search*
// @match               http://*.google.at/search*
// @match               http://*.google.com.au/search*
// @match               http://*.google.az/search*
// @match               http://*.google.ba/search*
// @match               http://*.google.com.bd/search*
// @match               http://*.google.be/search*
// @match               http://*.google.bf/search*
// @match               http://*.google.bg/search*
// @match               http://*.google.com.bh/search*
// @match               http://*.google.bi/search*
// @match               http://*.google.bj/search*
// @match               http://*.google.com.bn/search*
// @match               http://*.google.com.bo/search*
// @match               http://*.google.com.br/search*
// @match               http://*.google.bs/search*
// @match               http://*.google.bt/search*
// @match               http://*.google.co.bw/search*
// @match               http://*.google.by/search*
// @match               http://*.google.com.bz/search*
// @match               http://*.google.ca/search*
// @match               http://*.google.cd/search*
// @match               http://*.google.cf/search*
// @match               http://*.google.cg/search*
// @match               http://*.google.ch/search*
// @match               http://*.google.ci/search*
// @match               http://*.google.co.ck/search*
// @match               http://*.google.cl/search*
// @match               http://*.google.cm/search*
// @match               http://*.google.cn/search*
// @match               http://*.google.com.co/search*
// @match               http://*.google.co.cr/search*
// @match               http://*.google.com.cu/search*
// @match               http://*.google.cv/search*
// @match               http://*.google.com.cy/search*
// @match               http://*.google.cz/search*
// @match               http://*.google.de/search*
// @match               http://*.google.dj/search*
// @match               http://*.google.dk/search*
// @match               http://*.google.dm/search*
// @match               http://*.google.com.do/search*
// @match               http://*.google.dz/search*
// @match               http://*.google.com.ec/search*
// @match               http://*.google.ee/search*
// @match               http://*.google.com.eg/search*
// @match               http://*.google.es/search*
// @match               http://*.google.com.et/search*
// @match               http://*.google.fi/search*
// @match               http://*.google.com.fj/search*
// @match               http://*.google.fm/search*
// @match               http://*.google.fr/search*
// @match               http://*.google.ga/search*
// @match               http://*.google.ge/search*
// @match               http://*.google.gg/search*
// @match               http://*.google.com.gh/search*
// @match               http://*.google.com.gi/search*
// @match               http://*.google.gl/search*
// @match               http://*.google.gm/search*
// @match               http://*.google.gr/search*
// @match               http://*.google.com.gt/search*
// @match               http://*.google.gy/search*
// @match               http://*.google.com.hk/search*
// @match               http://*.google.hn/search*
// @match               http://*.google.hr/search*
// @match               http://*.google.ht/search*
// @match               http://*.google.hu/search*
// @match               http://*.google.co.id/search*
// @match               http://*.google.ie/search*
// @match               http://*.google.co.il/search*
// @match               http://*.google.im/search*
// @match               http://*.google.co.in/search*
// @match               http://*.google.iq/search*
// @match               http://*.google.is/search*
// @match               http://*.google.it/search*
// @match               http://*.google.je/search*
// @match               http://*.google.com.jm/search*
// @match               http://*.google.jo/search*
// @match               http://*.google.co.jp/search*
// @match               http://*.google.co.ke/search*
// @match               http://*.google.com.kh/search*
// @match               http://*.google.ki/search*
// @match               http://*.google.kg/search*
// @match               http://*.google.co.kr/search*
// @match               http://*.google.com.kw/search*
// @match               http://*.google.kz/search*
// @match               http://*.google.la/search*
// @match               http://*.google.com.lb/search*
// @match               http://*.google.li/search*
// @match               http://*.google.lk/search*
// @match               http://*.google.co.ls/search*
// @match               http://*.google.lt/search*
// @match               http://*.google.lu/search*
// @match               http://*.google.lv/search*
// @match               http://*.google.com.ly/search*
// @match               http://*.google.co.ma/search*
// @match               http://*.google.md/search*
// @match               http://*.google.me/search*
// @match               http://*.google.mg/search*
// @match               http://*.google.mk/search*
// @match               http://*.google.ml/search*
// @match               http://*.google.com.mm/search*
// @match               http://*.google.mn/search*
// @match               http://*.google.ms/search*
// @match               http://*.google.com.mt/search*
// @match               http://*.google.mu/search*
// @match               http://*.google.mv/search*
// @match               http://*.google.mw/search*
// @match               http://*.google.com.mx/search*
// @match               http://*.google.com.my/search*
// @match               http://*.google.co.mz/search*
// @match               http://*.google.com.na/search*
// @match               http://*.google.com.ng/search*
// @match               http://*.google.com.ni/search*
// @match               http://*.google.ne/search*
// @match               http://*.google.nl/search*
// @match               http://*.google.no/search*
// @match               http://*.google.com.np/search*
// @match               http://*.google.nr/search*
// @match               http://*.google.nu/search*
// @match               http://*.google.co.nz/search*
// @match               http://*.google.com.om/search*
// @match               http://*.google.com.pa/search*
// @match               http://*.google.com.pe/search*
// @match               http://*.google.com.pg/search*
// @match               http://*.google.com.ph/search*
// @match               http://*.google.com.pk/search*
// @match               http://*.google.pl/search*
// @match               http://*.google.pn/search*
// @match               http://*.google.com.pr/search*
// @match               http://*.google.ps/search*
// @match               http://*.google.pt/search*
// @match               http://*.google.com.py/search*
// @match               http://*.google.com.qa/search*
// @match               http://*.google.ro/search*
// @match               http://*.google.ru/search*
// @match               http://*.google.rw/search*
// @match               http://*.google.com.sa/search*
// @match               http://*.google.com.sb/search*
// @match               http://*.google.sc/search*
// @match               http://*.google.se/search*
// @match               http://*.google.com.sg/search*
// @match               http://*.google.sh/search*
// @match               http://*.google.si/search*
// @match               http://*.google.sk/search*
// @match               http://*.google.com.sl/search*
// @match               http://*.google.sn/search*
// @match               http://*.google.so/search*
// @match               http://*.google.sm/search*
// @match               http://*.google.sr/search*
// @match               http://*.google.st/search*
// @match               http://*.google.com.sv/search*
// @match               http://*.google.td/search*
// @match               http://*.google.tg/search*
// @match               http://*.google.co.th/search*
// @match               http://*.google.com.tj/search*
// @match               http://*.google.tl/search*
// @match               http://*.google.tm/search*
// @match               http://*.google.tn/search*
// @match               http://*.google.to/search*
// @match               http://*.google.com.tr/search*
// @match               http://*.google.tt/search*
// @match               http://*.google.com.tw/search*
// @match               http://*.google.co.tz/search*
// @match               http://*.google.com.ua/search*
// @match               http://*.google.co.ug/search*
// @match               http://*.google.co.uk/search*
// @match               http://*.google.com.uy/search*
// @match               http://*.google.co.uz/search*
// @match               http://*.google.com.vc/search*
// @match               http://*.google.co.ve/search*
// @match               http://*.google.vg/search*
// @match               http://*.google.co.vi/search*
// @match               http://*.google.com.vn/search*
// @match               http://*.google.vu/search*
// @match               http://*.google.ws/search*
// @match               http://*.google.rs/search*
// @match               http://*.google.co.za/search*
// @match               http://*.google.co.zm/search*
// @match               http://*.google.co.zw/search*
// @match               http://*.google.cat/search*
// @match               https://*.google.com/search*
// @match               https://*.google.ad/search*
// @match               https://*.google.ae/search*
// @match               https://*.google.com.af/search*
// @match               https://*.google.com.ag/search*
// @match               https://*.google.com.ai/search*
// @match               https://*.google.al/search*
// @match               https://*.google.am/search*
// @match               https://*.google.co.ao/search*
// @match               https://*.google.com.ar/search*
// @match               https://*.google.as/search*
// @match               https://*.google.at/search*
// @match               https://*.google.com.au/search*
// @match               https://*.google.az/search*
// @match               https://*.google.ba/search*
// @match               https://*.google.com.bd/search*
// @match               https://*.google.be/search*
// @match               https://*.google.bf/search*
// @match               https://*.google.bg/search*
// @match               https://*.google.com.bh/search*
// @match               https://*.google.bi/search*
// @match               https://*.google.bj/search*
// @match               https://*.google.com.bn/search*
// @match               https://*.google.com.bo/search*
// @match               https://*.google.com.br/search*
// @match               https://*.google.bs/search*
// @match               https://*.google.bt/search*
// @match               https://*.google.co.bw/search*
// @match               https://*.google.by/search*
// @match               https://*.google.com.bz/search*
// @match               https://*.google.ca/search*
// @match               https://*.google.cd/search*
// @match               https://*.google.cf/search*
// @match               https://*.google.cg/search*
// @match               https://*.google.ch/search*
// @match               https://*.google.ci/search*
// @match               https://*.google.co.ck/search*
// @match               https://*.google.cl/search*
// @match               https://*.google.cm/search*
// @match               https://*.google.cn/search*
// @match               https://*.google.com.co/search*
// @match               https://*.google.co.cr/search*
// @match               https://*.google.com.cu/search*
// @match               https://*.google.cv/search*
// @match               https://*.google.com.cy/search*
// @match               https://*.google.cz/search*
// @match               https://*.google.de/search*
// @match               https://*.google.dj/search*
// @match               https://*.google.dk/search*
// @match               https://*.google.dm/search*
// @match               https://*.google.com.do/search*
// @match               https://*.google.dz/search*
// @match               https://*.google.com.ec/search*
// @match               https://*.google.ee/search*
// @match               https://*.google.com.eg/search*
// @match               https://*.google.es/search*
// @match               https://*.google.com.et/search*
// @match               https://*.google.fi/search*
// @match               https://*.google.com.fj/search*
// @match               https://*.google.fm/search*
// @match               https://*.google.fr/search*
// @match               https://*.google.ga/search*
// @match               https://*.google.ge/search*
// @match               https://*.google.gg/search*
// @match               https://*.google.com.gh/search*
// @match               https://*.google.com.gi/search*
// @match               https://*.google.gl/search*
// @match               https://*.google.gm/search*
// @match               https://*.google.gr/search*
// @match               https://*.google.com.gt/search*
// @match               https://*.google.gy/search*
// @match               https://*.google.com.hk/search*
// @match               https://*.google.hn/search*
// @match               https://*.google.hr/search*
// @match               https://*.google.ht/search*
// @match               https://*.google.hu/search*
// @match               https://*.google.co.id/search*
// @match               https://*.google.ie/search*
// @match               https://*.google.co.il/search*
// @match               https://*.google.im/search*
// @match               https://*.google.co.in/search*
// @match               https://*.google.iq/search*
// @match               https://*.google.is/search*
// @match               https://*.google.it/search*
// @match               https://*.google.je/search*
// @match               https://*.google.com.jm/search*
// @match               https://*.google.jo/search*
// @match               https://*.google.co.jp/search*
// @match               https://*.google.co.ke/search*
// @match               https://*.google.com.kh/search*
// @match               https://*.google.ki/search*
// @match               https://*.google.kg/search*
// @match               https://*.google.co.kr/search*
// @match               https://*.google.com.kw/search*
// @match               https://*.google.kz/search*
// @match               https://*.google.la/search*
// @match               https://*.google.com.lb/search*
// @match               https://*.google.li/search*
// @match               https://*.google.lk/search*
// @match               https://*.google.co.ls/search*
// @match               https://*.google.lt/search*
// @match               https://*.google.lu/search*
// @match               https://*.google.lv/search*
// @match               https://*.google.com.ly/search*
// @match               https://*.google.co.ma/search*
// @match               https://*.google.md/search*
// @match               https://*.google.me/search*
// @match               https://*.google.mg/search*
// @match               https://*.google.mk/search*
// @match               https://*.google.ml/search*
// @match               https://*.google.com.mm/search*
// @match               https://*.google.mn/search*
// @match               https://*.google.ms/search*
// @match               https://*.google.com.mt/search*
// @match               https://*.google.mu/search*
// @match               https://*.google.mv/search*
// @match               https://*.google.mw/search*
// @match               https://*.google.com.mx/search*
// @match               https://*.google.com.my/search*
// @match               https://*.google.co.mz/search*
// @match               https://*.google.com.na/search*
// @match               https://*.google.com.ng/search*
// @match               https://*.google.com.ni/search*
// @match               https://*.google.ne/search*
// @match               https://*.google.nl/search*
// @match               https://*.google.no/search*
// @match               https://*.google.com.np/search*
// @match               https://*.google.nr/search*
// @match               https://*.google.nu/search*
// @match               https://*.google.co.nz/search*
// @match               https://*.google.com.om/search*
// @match               https://*.google.com.pa/search*
// @match               https://*.google.com.pe/search*
// @match               https://*.google.com.pg/search*
// @match               https://*.google.com.ph/search*
// @match               https://*.google.com.pk/search*
// @match               https://*.google.pl/search*
// @match               https://*.google.pn/search*
// @match               https://*.google.com.pr/search*
// @match               https://*.google.ps/search*
// @match               https://*.google.pt/search*
// @match               https://*.google.com.py/search*
// @match               https://*.google.com.qa/search*
// @match               https://*.google.ro/search*
// @match               https://*.google.ru/search*
// @match               https://*.google.rw/search*
// @match               https://*.google.com.sa/search*
// @match               https://*.google.com.sb/search*
// @match               https://*.google.sc/search*
// @match               https://*.google.se/search*
// @match               https://*.google.com.sg/search*
// @match               https://*.google.sh/search*
// @match               https://*.google.si/search*
// @match               https://*.google.sk/search*
// @match               https://*.google.com.sl/search*
// @match               https://*.google.sn/search*
// @match               https://*.google.so/search*
// @match               https://*.google.sm/search*
// @match               https://*.google.sr/search*
// @match               https://*.google.st/search*
// @match               https://*.google.com.sv/search*
// @match               https://*.google.td/search*
// @match               https://*.google.tg/search*
// @match               https://*.google.co.th/search*
// @match               https://*.google.com.tj/search*
// @match               https://*.google.tl/search*
// @match               https://*.google.tm/search*
// @match               https://*.google.tn/search*
// @match               https://*.google.to/search*
// @match               https://*.google.com.tr/search*
// @match               https://*.google.tt/search*
// @match               https://*.google.com.tw/search*
// @match               https://*.google.co.tz/search*
// @match               https://*.google.com.ua/search*
// @match               https://*.google.co.ug/search*
// @match               https://*.google.co.uk/search*
// @match               https://*.google.com.uy/search*
// @match               https://*.google.co.uz/search*
// @match               https://*.google.com.vc/search*
// @match               https://*.google.co.ve/search*
// @match               https://*.google.vg/search*
// @match               https://*.google.co.vi/search*
// @match               https://*.google.com.vn/search*
// @match               https://*.google.vu/search*
// @match               https://*.google.ws/search*
// @match               https://*.google.rs/search*
// @match               https://*.google.co.za/search*
// @match               https://*.google.co.zm/search*
// @match               https://*.google.co.zw/search*
// @match               https://*.google.cat/search*
// @grant               none
// @version             0.2.0
// @author              veringsek
// @description         Navigate through Google Search with a set of hotkeys. 
// @description:zh-TW   在 Google 搜尋結果頁面利用快捷鍵進行快速瀏覽。
// @description:zh-CN   在 Google 搜尋結果頁面利用快捷鍵進行快速瀏覽。
// ==/UserScript==

(function () {
    let css = document.createElement('style');
    css.type = 'text/css';
    css.innerText = `
        :root {
            --google-navigation--button-size: 30px;
            --google-navigation--stroke-color: black;
            --google-navigation--background-color: white;
            --google-navigation--button-opacity: 1;
        }
        
        .google-navigation--button {
            position: absolute;
            left: calc(-5 / 3 * var(--google-navigation--button-size));
            border: 2px var(--google-navigation--stroke-color) solid;
            border-radius: 5px;
            background: var(--google-navigation--background-color);
            box-shadow: 0px 2px var(--google-navigation--stroke-color);
            color: var(--google-navigation--stroke-color) !important;
            opacity: var(--google-navigation--button-opacity);
            text-decoration: none !important;
            width: var(--google-navigation--button-size);
            height: var(--google-navigation--button-size);
            line-height: var(--google-navigation--button-size);
            text-align: center;
            font-size: calc(2 / 3 * var(--google-navigation--button-size));
            user-select: none;
            transition: all 0.1s linear;
        
            animation: spawn 0.2s;
        }
        
        .google-navigation--button.keydown {
            transform: scale(0.8);
        }
        
        .google-navigation--switch {
            opacity: 0;
        }
        
        .google-navigation--switch.keydown {
            opacity: 1;
        }
        
        @keyframes spawn {
            from {
                transform: scale(0);
            }
        }
    `;
    document.head.appendChild(css);
})();

let timeStart = Date.now();
console.log(`Google Navigation start at ${new Date()}`);

let GoogleNavigation = {};
GoogleNavigation.GN_KEYDOWN_TIMER_DURATION = 1000;
GoogleNavigation.GN_KEYDOWN_TIMER_CANCELED = 'GN_KEYDOWN_TIMER_CANCELED';
GoogleNavigation.GN_KEYPRESS_SENSITIVITY = 500;
GoogleNavigation.GN_KEYPRESS_CANCELED = 'GN_KEYPRESS_CANCELED';
GoogleNavigation.GN_BUTTON_SIZE = 30;
GoogleNavigation.GN_BUTTON_SIZE_HALF = GoogleNavigation.GN_BUTTON_SIZE / 2;
GoogleNavigation.keydowns = new Set();
GoogleNavigation.tmrKeydown = undefined;
globalThis.GoogleNavigation = GoogleNavigation;

function setCSSVars() {
    document.documentElement.style.setProperty(
        '--google-navigation--button-size',
        `${globalThis.GoogleNavigation.GN_BUTTON_SIZE}px`
    );
    document.documentElement.style.setProperty(
        '--google-navigation--stroke-color',
        globalThis.getComputedStyle(document.body)['color']
    );
    document.documentElement.style.setProperty(
        '--google-navigation--background-color',
        globalThis.getComputedStyle(document.body)['backgroundColor']
    );
}

function makeTemplate() {
    let template = document.createElement('a');
    template.classList.add('google-navigation--button');
    template.commandKeydown = function () {
        this.classList.add('keydown');
        let documentElement = document.documentElement;
        documentElement.scroll({
            top: this.getBoundingClientRect().top + documentElement.scrollTop - window.innerHeight / 2,
            behavior: 'smooth'
        });
        globalThis.GoogleNavigation.tmrKeydown = globalThis.setTimeout(() => {
            globalThis.clearTimeout(globalThis.GoogleNavigation.tmrKeydown);
            globalThis.GoogleNavigation.tmrKeydown = globalThis.GoogleNavigation.GN_KEYDOWN_TIMER_CANCELED;
            this.classList.remove('keydown');
            this.commandCancel();
        }, globalThis.GoogleNavigation.GN_KEYDOWN_TIMER_DURATION);
    };
    template.commandKeyup = function () {
        this.classList.remove('keydown');
        this.commandPress();
    };
    template.commandPress = function () {
        if (document.getElementById('google-navigation--switch-Control').keydown) {
            window.open(this.link, '_blank');
        } else {
            window.open(this.link, '_self');
        }
    };
    template.commandCancel = function () {
        return;
    };
    globalThis.GoogleNavigation.buttonTemplate = template;
}

function getClonedButton(key, link) {
    let string = key;
    if (Array.isArray(key)) {
        [key, string] = key;
    }
    let cloned = globalThis.GoogleNavigation.buttonTemplate.cloneNode();
    cloned.commandKeydown = globalThis.GoogleNavigation.buttonTemplate.commandKeydown;
    cloned.commandKeyup = globalThis.GoogleNavigation.buttonTemplate.commandKeyup;
    cloned.commandPress = globalThis.GoogleNavigation.buttonTemplate.commandPress;
    cloned.commandCancel = globalThis.GoogleNavigation.buttonTemplate.commandCancel;
    cloned.innerHTML = string;
    cloned.classList.add(`google-navigation--button-${key}`);
    if (link) {
        cloned.link = link;
        cloned.setAttribute('link', link);
    }
    return cloned;
}

function plantButtons() {
    let links = [...document.getElementsByClassName('LC20lb')];
    let num = 0;
    for (let link of links) {
        if (getCollapseSectionParent(link)) continue;
        if (num >= 10) continue;
        let href = link.parentElement.href;
        let cloned;
        if (num === 0) {
            cloned = getClonedButton(['Enter', '⮨'], href);
            cloned.classList.add('google-navigation--button-0');
        } else {
            cloned = getClonedButton(num, href);
        }
        cloned.style.top = `${link.offsetTop + link.clientHeight / 2 - GoogleNavigation.GN_BUTTON_SIZE_HALF}px`;
        link.insertBefore(cloned, link.children[0]);
        num += 1;
    }

    let search = document.getElementById('search');
    if (search) {
        let cloned = getClonedButton(['Control', 'CTRL']);
        cloned.id = 'google-navigation--switch-Control';
        cloned.classList.add('google-navigation--switch');
        cloned.style.left = '-150px';
        cloned.style.width = '80px';
        cloned.style.fontWeight = 'bold';
        cloned.keydown = false;
        cloned.commandKeydown = function () {
            this.tmrKeypress = globalThis.setTimeout(() => {
                this.tmrKeypress = globalThis.GoogleNavigation.GN_KEYPRESS_CANCELED;
            }, globalThis.GoogleNavigation.GN_KEYPRESS_SENSITIVITY);
        };
        cloned.commandKeyup = function () {
            if (this.tmrKeypress === globalThis.GoogleNavigation.GN_KEYPRESS_CANCELED) {
                this.tmrKeypress = undefined;
            } else if (this.tmrKeypress) {
                this.keydown = !this.keydown;
                if (this.keydown) {
                    this.classList.add('keydown');
                } else {
                    this.classList.remove('keydown');
                }
            }
        };
        search.insertBefore(cloned, search.children[0]);
    }

    let btnWiki = document.getElementsByClassName('ruhjFe')[0];
    if (btnWiki) {
        let cloned = getClonedButton(['p', 'P'], btnWiki.href);
        let card = getWidgetParent(btnWiki);
        card.style.position = 'relative';
        card.insertBefore(cloned, card.children[0]);
    }

    let translatorWidgetMain = document.getElementById('tw-main');
    let translatorWidgetSourceTextTA = document.getElementById('tw-source-text-ta');
    if (translatorWidgetMain && translatorWidgetSourceTextTA) {
        let cloned = getClonedButton(['t', 'T']);
        let rectMain = translatorWidgetMain.getBoundingClientRect();
        let rectText = translatorWidgetSourceTextTA.getBoundingClientRect();
        let top = (rectText.bottom + rectText.top) / 2 - rectMain.top - GoogleNavigation.GN_BUTTON_SIZE_HALF;
        cloned.style.top = `${top}px`;
        cloned.commandPress = function () {
            document.getElementById('tw-source-text-ta').focus();
        };
        translatorWidgetMain.style.position = 'relative';
        translatorWidgetMain.insertBefore(cloned, translatorWidgetMain.children[0]);
    }

    let calculatorWidget = document.getElementById('cwos')?.parentElement?.parentElement;
    if (calculatorWidget) {
        let calculatorWidgetParent = getWidgetParent(calculatorWidget);
        let cloned = getClonedButton(['t', 'T']);
        let top = calculatorWidgetParent.clientHeight / 2 - globalThis.GoogleNavigation.GN_BUTTON_SIZE_HALF;
        cloned.style.top = `${top}px`;
        cloned.commandPress = function () {
            document.getElementById('cwos').parentElement.parentElement.focus();
        };
        calculatorWidgetParent.insertBefore(cloned, calculatorWidgetParent.children[0]);
    }

    // let currentPage = document.getElementById('top_nav')?.querySelector('[aria-current=page]');
    // if (currentPage) {
    //     let nav = currentPage.parentElement;
    //     let next = currentPage.nextSibling;
    //     if (!next) next = nav.children[0];
    //     let cloned = getClonedButton(['n', 'N'], next.getElementsByTagName('a')[0]?.href);
    //     cloned.style.left = '130px';
    //     nav.insertBefore(cloned, nav.children[0]);
    // }

    let pnprev = document.getElementById('pnprev');
    if (pnprev) {
        let cloned = getClonedButton([',', ','], pnprev.href);
        cloned.style.top = '-3px';
        cloned.style.left = '-40px';
        pnprev.style.position = 'relative';
        pnprev.insertBefore(cloned, pnprev.children[0]);
    }
    let pnnext = document.getElementById('pnnext');
    if (pnnext) {
        let cloned = getClonedButton(['.', '‧'], pnnext.href);
        cloned.style.top = '-3px';
        cloned.style.left = 'calc(100% + 5px)';
        pnnext.style.position = 'relative';
        pnnext.insertBefore(cloned, pnnext.children[0]);
    }
}

function isCommanding() {
    let target = document.activeElement;
    return !(['INPUT', 'TEXTAREA'].includes(target.tagName) || target.classList.contains('jlkklc'));
}

function cssVar(name) {
    return globalThis.getComputedStyle(document.documentElement).getPropertyValue(name);
}

function getWidgetParent(element) {
    let node = element;
    do {
        let computedStyle = globalThis.getComputedStyle(node);
        let borderWidth = computedStyle.borderWidth;
        if (borderWidth !== '' && !(/^0\D*/.test(borderWidth))) {
            return node;
        }
        node = node.parentElement;
    } while (node !== document.body);
    return null;
}

function getCollapseSectionParent(element) {
    let node = element;
    do {
        if (node.children.length > 0) {
            let computedStyle = globalThis.getComputedStyle(node.children[0]);
            let borderWidth = computedStyle.borderWidth;
            if (borderWidth === '1px 0px 0px') return node;
        }
        node = node.parentElement;
    } while (node !== document.body);
    return null;
}

function assignEventListeners() {
    let onFocusChanged = function (ev) {
        document.documentElement.style.setProperty(
            '--google-navigation--button-opacity',
            isCommanding() ? 1 : 0.5
        );
    };
    window.addEventListener('focus', onFocusChanged, true);
    window.addEventListener('blur', onFocusChanged, true);

    document.body.addEventListener('keydown', function (ev) {
        if (globalThis.GoogleNavigation.keydowns.has(ev.key)) return;
        globalThis.GoogleNavigation.keydowns.add(ev.key);
        if (isCommanding()) {
            let button = document.getElementsByClassName(`google-navigation--button-${ev.key}`)[0];
            if (button) {
                button.commandKeydown();
            }
        }
    });

    document.body.addEventListener('keyup', function (ev) {
        globalThis.GoogleNavigation.keydowns.delete(ev.key);
        if (globalThis.GoogleNavigation.tmrKeydown === globalThis.GoogleNavigation.GN_KEYDOWN_TIMER_CANCELED) {
            globalThis.GoogleNavigation.tmrKeydown = undefined;
            return;
        }
        globalThis.clearTimeout(globalThis.GoogleNavigation.tmrKeydown);
        globalThis.GoogleNavigation.tmrKeydown = undefined;
        if (isCommanding()) {
            let button = document.getElementsByClassName(`google-navigation--button-${ev.key}`)[0];
            if (button) {
                button.commandKeyup();
            }
        }
    });
}

setCSSVars();
makeTemplate();
plantButtons();
assignEventListeners();

console.log(`Google Navigation end at ${new Date()}`);
console.log(`Google Navigation consumed ${Date.now() - timeStart} ms. `);