Disable Page Visibility API and Copy-Paste detection.user.js

// ==UserScript==
// @name     Disable Page Visibility API and Copy-Paste detection
// @version  1
// @grant    none
// @match        *://*/*
// ==/UserScript==

/* Disable Page Visibility API */
/* https://github.com/IceWreck/Page-Visibility-User-Script */
let events_to_block = [
    "visibilitychange",
    "webkitvisibilitychange",
    "mozvisibilitychange",
    "hasFocus",
    "blur",
    "focus"
]

for (let event_name of events_to_block) {
    document.addEventListener(event_name, function (event) {
        event.preventDefault();
        event.stopPropagation();
        event.stopImmediatePropagation();
    }, true);
}

for (let 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" });

/* End */


/* Absolute Enable Right Click & Copy */
/* https://greasyfork.org/en/scripts/23772-absolute-enable-right-click-copy/code */
(function () {
    'use strict';

    var css = document.createElement('style');
    var head = document.head;

    css.type = 'text/css';

    css.innerText = `* {
        -webkit-user-select: text !important;
        -moz-user-select: text !important;
        -ms-user-select: text !important;
         user-select: text !important;
    }`;

    function main() {

        var doc = document;
        var body = document.body;

        var docEvents = [
            doc.oncontextmenu = null,
            doc.onselectstart = null,
            doc.ondragstart = null,
            doc.onmousedown = null
        ];

        var bodyEvents = [
            body.oncontextmenu = null,
            body.onselectstart = null,
            body.ondragstart = null,
            body.onmousedown = null,
            body.oncut = null,
            body.oncopy = null,
            body.onpaste = null
        ];

        [].forEach.call(
            ['copy', 'cut', 'paste', 'select', 'selectstart'],
            function (event) {
                document.addEventListener(event, function (e) { e.stopPropagation(); }, true);
            }
        );

        alwaysAbsoluteMode();
        enableCommandMenu();
        head.appendChild(css);
        document.addEventListener('keydown', keyPress);
    }

    function keyPress(event) {
        if (event.ctrlKey && event.keyCode == 192) {
            return confirm('Activate Absolute Right Click Mode!') == true ? absoluteMode() : null;
        }
    }

    function absoluteMode() {
        [].forEach.call(
            ['contextmenu', 'copy', 'cut', 'paste', 'mouseup', 'mousedown', 'keyup', 'keydown', 'drag', 'dragstart', 'select', 'selectstart'],
            function (event) {
                document.addEventListener(event, function (e) { e.stopPropagation(); }, true);
            }
        );
    }

    function alwaysAbsoluteMode() {
        let sites = ['example.com', 'www.example.com'];
        const list = RegExp(sites.join('|')).exec(location.hostname);
        return list ? absoluteMode() : null;
    }

    function enableCommandMenu() {

    }

    var blackList = [
        'youtube.com', '.google.', '.google.com', 'greasyfork.org', 'twitter.com', 'instagram.com', 'facebook.com', 'translate.google.com', '.amazon.', '.ebay.', 'github.', 'stackoverflow.com',
        'bing.com', 'live.com', '.microsoft.com', 'dropbox.com', 'pcloud.com', 'box.com', 'sync.com', 'onedrive.com', 'mail.ru', 'deviantart.com', 'pastebin.com',
        'dailymotion.com', 'twitch.tv', 'spotify.com', 'steam.com', 'steampowered.com', 'gitlab.com', '.reddit.com'
    ]

    var enabled = false;
    var url = window.location.hostname;
    var match = RegExp(blackList.join('|')).exec(url);

    if (window && typeof window != undefined && head != undefined) {

        if (!match && enabled != true) {

            main();
            enabled = true

            //console.log(location.hostname);

            window.addEventListener('contextmenu', function contextmenu(event) {
                event.stopPropagation();
                event.stopImmediatePropagation();
                var handler = new eventHandler(event);
                window.removeEventListener(event.type, contextmenu, true);
                var eventsCallBack = new eventsCall(function () { });
                handler.fire();
                window.addEventListener(event.type, contextmenu, true);
                if (handler.isCanceled && (eventsCallBack.isCalled)) {
                    event.preventDefault();
                }
            }, true);
        }

        function eventsCall() {
            this.events = ['DOMAttrModified', 'DOMNodeInserted', 'DOMNodeRemoved', 'DOMCharacterDataModified', 'DOMSubtreeModified'];
            this.bind();
        }

        eventsCall.prototype.bind = function () {
            this.events.forEach(function (event) {
                document.addEventListener(event, this, true);
            }.bind(this));
        };

        eventsCall.prototype.handleEvent = function () {
            this.isCalled = true;
        };

        eventsCall.prototype.unbind = function () {
            this.events.forEach(function (event) { }.bind(this));
        };

        function eventHandler(event) {
            this.event = event;
            this.contextmenuEvent = this.createEvent(this.event.type);
        }

        eventHandler.prototype.createEvent = function (type) {
            var target = this.event.target;
            var event = target.ownerDocument.createEvent('MouseEvents');
            event.initMouseEvent(
                type, this.event.bubbles, this.event.cancelable,
                target.ownerDocument.defaultView, this.event.detail,
                this.event.screenX, this.event.screenY, this.event.clientX, this.event.clientY,
                this.event.ctrlKey, this.event.altKey, this.event.shiftKey, this.event.metaKey,
                this.event.button, this.event.relatedTarget
            );
            return event;
        };

        eventHandler.prototype.fire = function () {
            var target = this.event.target;
            var contextmenuHandler = function (event) {
                event.preventDefault();
            }.bind(this);
            target.dispatchEvent(this.contextmenuEvent);
            this.isCanceled = this.contextmenuEvent.defaultPrevented;
        };

    }

})();