Block Ads on Yandex

BlockYaAds.user.js

// ==UserScript==
// @name         BlockYaAds
// @description  Block all ads on yandex.ru
// @version      0.5.6
// @author       Chrono
// @license      MIT
// @match        https://mail.yandex.ru/*
// @match        https://*yandex.ru/*
// @run-at       document-start
// @grant        none
// ==/UserScript==

(function() {
  var ignoredClasses = [
    "ns-view-abook",
    "ns-view-advanced",
    "ns-view-app",
    "ns-view-attach",
    "ns-view-browser",
    "ns-view-collect",
    "ns-view-compact-header",
    "ns-view-compose",
    "ns-view-contact-actions",
    "ns-view-container",
    "ns-view-copy",
    "ns-view-fake",
    "ns-view-fill",
    "ns-view-folders",
    "ns-view-footer",
    "ns-view-header",
    "ns-view-id",
    "ns-view-infoline",
    "ns-view-labels",
    "ns-view-layout",
    "ns-view-left",
    "ns-view-loading",
    "ns-view-mail",
    "ns-view-main",
    "ns-view-message",
    "ns-view-message-react",
    "ns-view-messages",
    "ns-view-midgets",
    "ns-view-mops",
    "ns-view-notifi",
    "ns-view-opt-in-subs-box",
    "ns-view-opt-in-subs-view",
    "ns-view-page",
    "ns-view-ps-header",
    "ns-view-quick",
    "ns-view-react-left-column",
    "ns-view-react-main-buttons",
    "ns-view-react-quick-reply",
    "ns-view-right",
    "ns-view-service",
    "ns-view-setup-abook",
    "ns-view-setup-left",
    "ns-view-sidebar-with-widgets",
    "ns-view-sidebar-with-widgets-box",
    "ns-view-system-alert-container",
    "ns-view-skin",
    "ns-view-tech",
    "ns-view-themes",
    "ns-view-thread",
    "ns-view-timeline",
    "ns-view-tip",
    "ns-view-toolbar",
    "ns-view-view"
  ];


  // for all other subdomains remove all divs but the lists below
  var specificIgnoredClasses = [
    "AdvRsyaCrossPage",
    "App",
    "b-page",
    "Button",
    "Carousel",
    "cbir",
    "Cbir",
    "clearfix",
    "copyright",
    "Content",
    "content",
    "detect",
    "Divider",
    "Extra",
    "extra",
    "fade",
    "favicon",
    "Favicon",
    "Fetch",
    "FewLines",
    "Flex",
    "Footer",
    "footer",
    "header",
    "Header",
    "Host",
    "i-bem",
    "i-react",
    "image_history",
    "ImagesViewer-Content",
    "ImagesViewer-Footer",
    "ImagesViewer-Layout",
    "ImagesViewer-Modal",
    "ImagesViewer-Paranja",
    "ImagesViewer-Rim",
    "ImagesViewer-Sidebar",
    "ImagesViewer-TopSide",
    "ImagesViewer-View",
    "internal",
    "Justifier",
    "main",
    "mini",
    "List",
    "Menu",
    "Mini",
    "Missing",
    "MMFavicon",
    "MMImage",
    "MMOrganic",
    "MMViewer",
    "Modal",
    "Organic",
    "organic",
    "overlay",
    "navigation",
    "Native",
    "Open",
    "Page",
    "page",
    "Pager",
    "paranja",
    "Path",
    "path",
    "presearch",
    "Prevention",
    "Related",
    "Request",
    "Root",
    "Search",
    "SendTimeMark",
    "Serp",
    "serp",
    "Site",
    "site",
    "Skeleton",
    "smart",
    "Spyable",
    "Svg",
    "Swipe",
    "Spin",
    "spin",
    "text",
    "Typo",
    "unread",
    "User",
    "Video",
    "Viewer",
    "z-index-group"
  ];


  var miscellaneousClasses = [
    "Container",
    "CardDivider",
    "Wrapper",
    "Tags"
  ];

  // default element visibility
  var elementsVisibility = {};

  // paths to exclude filtering on
  var excludedPaths = [
      "/all",
      "/maps",
      "/products",
      "/search",
      "/video/preview"
  ];

  var numElements = 0;
  var scriptStarted = false;
  var lastRunMillis = 0;

  function removeElements(selector, visibility, el) {
    var number = 0;

    if (visibility != "none") {
        elementsVisibility[selector] = visibility;
    }

    el.style.display = visibility;
  }

  function hideInnerElements(container) {
    container.querySelectorAll("*").forEach(function(innerEl) {
      innerEl.style.display = "none";
    });
  }

  var mutationConfig = {
    attributes: true,
    attributeOldValue: true,
    characterData: true,
    characterDataOldValue: true,
    childList: true,
    subtree: true
  };

  var observer;

  function start() {
      var isElementFound = false;
      var divs = document.getElementsByTagName("div");
      var currentUrl = window.location;
      var baseUrl = currentUrl.host;
      if (Date.now() - lastRunMillis < 300) {
          lastRunMillis = Date.now();
          return;
      }
      //console.log("start");

      // skip filtering if not implemented
      var exit = false;
      excludedPaths.forEach(function(path) {
          if (window.location.pathname.startsWith(path)) {
              console.log(`filtering for ${path} is not implemented`);
              exit = true;
              return;
          }
      });
      if (exit) return;

      var rootNodes = document.getElementsByClassName("Root");
      for (var i = 0; i < rootNodes.length; i++) {
        var rootNode = rootNodes[i];
        if (rootNode) {
          if (rootNode.firstChild != undefined) {
            if (rootNode.firstChild.classList != []) {
              var ignoredClass = rootNode.firstChild.classList[0];
              //console.log(ignoredClass + " is the root, skipping");
              specificIgnoredClasses.push(ignoredClass);
            }
          }
        }
      }

    // Specific case for "docviewer.yandex.ru"
    if (baseUrl === "docviewer.yandex.ru") {
      document.querySelectorAll("*").forEach(function(el) {
        el.classList.forEach(function(className) {
          if (className === "js-doc-html") {
            var innerElements = el.querySelectorAll("*");
            innerElements.forEach(function loop(el1) {
              if (loop.stop) {
                return;
              }
              if ((el1.tagName === "DIV") && el1.classList.length === 3) {
                removeElements("." + el1.classList[0], "none", el);
                loop.stop = true;
              }
            });
          }
        });

        if (el.tagName.length > 10) {
          el.style.display = "none";
        }
      });
    }

    for (i = 0; i < divs.length; i++) {
      var div = divs[i];

      if (window.location.pathname === "/images/search") {
        var style = div.getAttribute("style");
        if (style === "margin-bottom: 4px;" || div.offsetHeight === 72) {
          div.classList.forEach(function(className) {
            removeElements("." + className, "none", div);
          });
        }
      }

      div.classList.forEach(function(className) {
        // Match classes for "mail.yandex.ru"
        if ((baseUrl === "mail.yandex.ru") && !className.startsWith("ns-view-")) {
          return;
        }

        // Classes to ignore
        isElementFound = true;

        // Hide specific class
        if (className === "ComposeDoneDirect") {
          removeElements("." + className, 'none', div);
        }

        for (var j = 0; j < miscellaneousClasses.length; j++) {
          if (className.indexOf(miscellaneousClasses[j]) !== -1) {
            isElementFound = false;
            removeElements("." + className, elementsVisibility[className], div);
            return;
          }
        }

        for (j = 0; j < ignoredClasses.length; j++) {
          if (className.startsWith(ignoredClasses[j])) {
            isElementFound = false;
            removeElements("." + className, elementsVisibility[className], div);
            return;
          }
        }

        if (className === "ImagesViewer") {
          isElementFound = false;
          removeElements("." + className, elementsVisibility[className], div);
          return;
        }

        for (j = 0; j < specificIgnoredClasses.length; j++) {
          if (className.startsWith(specificIgnoredClasses[j])) {
            isElementFound = false;
          }
        }

        if (className == "ImagesViewer-LayoutSideblock") {
            console.log("ImagesViewer-LayoutSideblock");
            if (div.firstChild.classList != undefined) {
                div.firstChild.classList.forEach(function(imagesViewerClassName) {
                    if (!specificIgnoredClasses.includes(imagesViewerClassName)) {
                        console.log("found LayoutSideblock first child div");
                        specificIgnoredClasses.push(imagesViewerClassName);
                    }
                });
            }
        }
        if (isElementFound) {
          console.log("Removed element with class:", className);
          numElements = removeElements("." + className, "none", div);
        }
      });
      if (baseUrl === "mail.yandex.ru" && numElements != 0) {
          //console.log("disconnecting observer");
          //observer.disconnect();
      }
    }
  }

  observer = new MutationObserver(start);

  function deferredStart() {
    setTimeout(function() {
      if (document.body instanceof Node && !scriptStarted) {
        lastRunMillis = Date.now();
        observer.observe(document.body, mutationConfig);
        scriptStarted = true;
      }

      deferredStart();
    }, 200);
  }

  deferredStart();
  console.log("BlockYaAds script is running.");
})();