// ==UserScript==
// @name         Screensaver Blocker
// @namespace    http://tampermonkey.net/
// @version      0.1
// @description https://www.google.com/ を開いている間、スクリーンセーバーを抑止する
// @author       anonymous
// @match        https://www.google.com/
// @icon         https://www.google.com/s2/favicons?domain=google.com
// @license        public domain
// @grant        none
// ==/UserScript==
(function() {
'use strict';
let wl;
const init = async () => {
if (wl && !wl.released) {
return true;
}
wl = null;
if (document.visibilityState !== 'visible') {
return;
}
console.log('WakeLock request');
try {
wl = await navigator.wakeLock.request('screen');
console.log(wl);
wl.addEventListener('release',e => {
console.log('WakeLock released ');
start();
});
} catch (e) {
console.warn('e', e);
return false;
}
console.log(' WakeLock locked');
return true;
};
const start = async () => {
if (!await init()) {
setTimeout(start, 1000);
}
};
start();
})();