Google Navigation

Navigate through Google Search with a set of hotkeys.

Από την 03/03/2022. Δείτε την τελευταία έκδοση.

θα χρειαστεί να εγκαταστήσετε μια επέκταση όπως το Tampermonkey, το Greasemonkey ή το Violentmonkey για να εγκαταστήσετε αυτόν τον κώδικα.

θα χρειαστεί να εγκαταστήσετε μια επέκταση όπως το Tampermonkey ή το Violentmonkey για να εγκαταστήσετε αυτόν τον κώδικα.

θα χρειαστεί να εγκαταστήσετε μια επέκταση όπως το Tampermonkey ή το Violentmonkey για να εγκαταστήσετε αυτόν τον κώδικα.

θα χρειαστεί να εγκαταστήσετε μια επέκταση όπως το Tampermonkey ή το Userscripts για να εγκαταστήσετε αυτόν τον κώδικα.

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

Θα χρειαστεί να εγκαταστήσετε μια επέκταση διαχείρισης κώδικα χρήστη για να εγκαταστήσετε αυτόν τον κώδικα.

(Έχω ήδη έναν διαχειριστή κώδικα χρήστη, επιτρέψτε μου να τον εγκαταστήσω!)

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.

(Έχω ήδη έναν διαχειριστή στυλ χρήστη, επιτρέψτε μου να τον εγκαταστήσω!)

// ==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();