Google Navigation

Navigate through Google Search with a set of hotkeys.

Versión del día 03/03/2022. Echa un vistazo a la versión más reciente.

Tendrás que instalar una extensión para tu navegador como Tampermonkey, Greasemonkey o Violentmonkey si quieres utilizar este script.

Necesitarás instalar una extensión como Tampermonkey o Violentmonkey para instalar este script.

Necesitarás instalar una extensión como Tampermonkey o Violentmonkey para instalar este script.

Necesitarás instalar una extensión como Tampermonkey o Userscripts para instalar este script.

Necesitará instalar una extensión como Tampermonkey para instalar este script.

Necesitarás instalar una extensión para administrar scripts de usuario si quieres instalar este script.

(Ya tengo un administrador de scripts de usuario, déjame instalarlo)

Necesitará instalar una extensión como Stylus para instalar este estilo.

Necesitará instalar una extensión como Stylus para instalar este estilo.

Necesitará instalar una extensión como Stylus para instalar este estilo.

Necesitará instalar una extensión del gestor de estilos de usuario para instalar este estilo.

Necesitará instalar una extensión del gestor de estilos de usuario para instalar este estilo.

Necesitará instalar una extensión del gestor de estilos de usuario para instalar este estilo.

(Ya tengo un administrador de estilos de usuario, déjame instalarlo)

// ==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             0.3.3
// @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 {
            background: var(--google-navigation--stroke-color);
            color: var(--google-navigation--background-color) !important;
            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 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 {
            this.click();
        }
    };
    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 search = document.getElementById('search');
    let rcnt = document.getElementById('rcnt');
    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;
        cloned = getClonedButton(num, href);
        cloned.style.top = `${link.offsetTop + link.clientHeight / 2 - GoogleNavigation.GN_BUTTON_SIZE_HALF}px`;
        link.insertBefore(cloned, link.children[0]);

        let node = link;
        let notInRcnt = false;
        do {
            if (!(node instanceof Element)) {
                notInRcnt = true;
                break;
            }
            let style = window.getComputedStyle(node);
            if (style['overflow'] === 'hidden') {
                node.style.overflow = 'visible';
            }
            if (style['contain'] === 'layout paint') {
                node.style.contain = 'unset';
            }
            node = node.parentElement;
        } while (node !== rcnt);
        if (notInRcnt) continue;
        
        setButtonEnter(document.activeElement === document.body);
        num += 1;
    }

    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 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
        );
        setButtonEnter(document.activeElement === document.body);
    };
    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();
            }
        }
    });
}

function setButtonEnter(enabled) {
    let btn0 = document.getElementsByClassName('google-navigation--button-0')[0];
    if (enabled) {
        btn0.innerHTML = '⮨';
        btn0.classList.add('google-navigation--button-Enter');
    } else {
        btn0.innerHTML = '0';
        btn0.classList.remove('google-navigation--button-Enter');
    }
}

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