Yahoo - Disable Auto Refresh

Prevent Yahoo from automatically refreshing the page

K instalaci tototo skriptu si budete muset nainstalovat rozšíření jako Tampermonkey, Greasemonkey nebo Violentmonkey.

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

K instalaci tohoto skriptu si budete muset nainstalovat rozšíření jako Tampermonkey nebo Violentmonkey.

K instalaci tohoto skriptu si budete muset nainstalovat rozšíření jako Tampermonkey nebo Userscripts.

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

K instalaci tohoto skriptu si budete muset nainstalovat manažer uživatelských skriptů.

(Už mám manažer uživatelských skriptů, nechte mě ho nainstalovat!)

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.

(Už mám manažer uživatelských stylů, nechte mě ho nainstalovat!)

// ==UserScript==
// @name         Yahoo - Disable Auto Refresh
// @description  Prevent Yahoo from automatically refreshing the page
// @namespace    http://tampermonkey.net/
// @icon         https://cdn-icons-png.flaticon.com/128/2504/2504961.png
// @version      0.0.4
// @author       rxm
// @match        https://uk.yahoo.com/*
// @match        https://www.yahoo.com/*
// @license      MIT
// @grant        unsafeWindow
// @run-at       document-start
// ==/UserScript==

(function () {
    'use strict';

    const win = unsafeWindow;

    /* --------------------------------------------------
       1. LIE ABOUT VISIBILITY (CRITICAL)
    -------------------------------------------------- */

    Object.defineProperty(document, 'hidden', {
        get: () => false
    });

    Object.defineProperty(document, 'visibilityState', {
        get: () => 'visible'
    });

    Object.defineProperty(document, 'webkitVisibilityState', {
        get: () => 'visible'
    });

    /* --------------------------------------------------
       2. BLOCK REGISTRATION OF VISIBILITY EVENTS
    -------------------------------------------------- */

    const blockedEvents = new Set([
        'visibilitychange',
        'pageshow',
        'pagehide',
        'freeze',
        'resume',
        'focus',
        'blur'
    ]);

    const originalAddEventListener = EventTarget.prototype.addEventListener;

    EventTarget.prototype.addEventListener = function (type, listener, options) {
        if (blockedEvents.has(type)) {
            console.log('[TM] Blocked event listener:', type);
            return;
        }
        return originalAddEventListener.call(this, type, listener, options);
    };

    /* --------------------------------------------------
       3. HARD-BLOCK ALL PROGRAMMATIC NAVIGATION
    -------------------------------------------------- */

    const block = (name) => () => {
        console.log('[TM] Blocked', name);
    };

    win.location.reload = block('location.reload');

    const origAssign = Location.prototype.assign;
    Location.prototype.assign = function (url) {
        if (url === win.location.href) return;
        return origAssign.call(this, url);
    };

    const origReplace = Location.prototype.replace;
    Location.prototype.replace = function (url) {
        if (url === win.location.href) return;
        return origReplace.call(this, url);
    };

    /* --------------------------------------------------
       4. PREVENT BFCache REHYDRATION TRIGGERS
    -------------------------------------------------- */

    window.addEventListener('pageshow', e => {
        if (e.persisted) {
            e.stopImmediatePropagation();
        }
    }, true);

    /* --------------------------------------------------
       5. LOCK & RESTORE SCROLL POSITION (THE REAL FIX)
    -------------------------------------------------- */

    let lastScrollY = 0;

    // Track scroll position continuously
    win.addEventListener('scroll', () => {
        lastScrollY = win.scrollY;
    }, { passive: true });

    // Restore scroll position if Yahoo resets it
    const restoreScroll = () => {
        if (win.scrollY < lastScrollY) {
            win.scrollTo(0, lastScrollY);
            console.log('[TM] Restored scroll position:', lastScrollY);
        }
    };

    // Run on DOM changes (Yahoo re-renders on tab return)
    const scrollObserver = new MutationObserver(restoreScroll);
    scrollObserver.observe(document.documentElement, {
        childList: true,
        subtree: true
    });

    // Periodic safety check
    setInterval(restoreScroll, 300);

    console.log('[TM] Yahoo auto-refresh fully disabled');

})();