Navigate through Google Search with a set of hotkeys.
// ==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 0.3.4
// @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 {
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 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) break;
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);
if (!card) {
card = document.getElementById('rhs');
cloned.style.left = `calc(2 / 3 * var(--google-navigation--button-size) + 100%)`;
}
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 getParent(element, condition) {
let node = element;
do {
if (condition(node)) return node;
node = node.parentElement;
} while (node !== document.body);
return null;
}
function getWidgetParent(element) {
return getParent(element, node => {
let computedStyle = globalThis.getComputedStyle(node);
let borderWidth = computedStyle.borderWidth;
return borderWidth !== '' && !(/^0\D*/.test(borderWidth));
});
}
function getCollapseSectionParent(element) {
return getParent(element, node => node.getAttribute('jscontroller') === 'Da4hkd');
}
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();