10/4/2023, 5:07:06 PM
// ==UserScript==
// @name PreventPageVisibilityAuto
// @namespace PreventPageVisibilityAuto
// @match *://*/*
// @run-at document-start
// @grant GM_getValue
// @grant GM_setValue
// @grant GM_addStyle
// @grant GM_registerMenuCommand
// @version 1.1
// @author -
// @description 10/4/2023, 5:07:06 PM
// ==/UserScript==
var defaultvalue = 'none';
var name = 'PreventPageVisibilityAuto';
var prefix = "autoinject" + name;
var value = GM_getValue("value" + name + document.domain, defaultvalue);
console.log(value);
var injectedStatus = false;
var hostarray = [];
function inject() {
//if (window.self !== window.top) return; // Not in frames
if (injectedStatus !== false) return; // Not if already injected
let events_to_block = [
"visibilitychange",
"webkitvisibilitychange",
"mozvisibilitychange",
"hasFocus",
"blur",
"focus",
"mouseleave"
]
for (event_name of events_to_block) {
document.addEventListener(event_name, function (event) {
event.preventDefault();
event.stopPropagation();
event.stopImmediatePropagation();
}, true);
}
for (event_name of events_to_block) {
window.addEventListener(event_name, function (event) {
event.preventDefault();
event.stopPropagation();
event.stopImmediatePropagation();
}, true);
}
document.hasFocus = function () { return true; };
document["onvisibilitychange"] = null;
Object.defineProperty(document, "visibilityState", { value: "visible" });
Object.defineProperty(document, "hidden", { value: false });
Object.defineProperty(document, "mozHidden", { value: false });
Object.defineProperty(document, "webkitHidden", { value: false });
Object.defineProperty(document, "webkitVisibilityState", { value: "visible" });
injectedStatus = true;
}
function addHost() {
hostarray.push(location.hostname);
GM_setValue(prefix, JSON.stringify(hostarray));
if (injectedStatus == false) inject;
}
function set() {
var val = window.prompt("Enter " + name + document.domain + " value", defaultvalue);
val = parseInt(val);
if (val == undefined) {
return false;
}
GM_setValue("value" + name + document.domain, val);
}
function plus() {
var value = GM_getValue("value" + name + document.domain, defaultvalue);
GM_setValue("value" + name + document.domain, value + 1);
}
function minus() {
var value = GM_getValue("value" + name + document.domain, defaultvalue);
GM_setValue("value" + name + document.domain, value - 1);
}
function removeHost() {
var index = hostarray.indexOf(location.hostname);
if (index > -1) {
hostarray.splice(index, 1);
GM_setValue(prefix, JSON.stringify(hostarray));
}
}
// This should work in Violentmonkey and Tampermonkey, but unfortunately not Greasemonkey.
try {
hostarray = JSON.parse(GM_getValue(prefix, "[]"));
if (typeof (value) == 'number') {
GM_registerMenuCommand("+", plus);
GM_registerMenuCommand("-", minus);
}
GM_registerMenuCommand("Set " + name, set);
if (hostarray.includes(location.hostname)) {
inject();
injectedStatus = true;
GM_registerMenuCommand("Stop Auto-Injecting " + name, removeHost);
} else {
GM_registerMenuCommand("Inject " + name, inject);
GM_registerMenuCommand("Auto-Inject on " + location.hostname, addHost);
}
} catch (err) {
console.log("Error adding Inject menu items: " + name);
console.log(err);
}