CSS: m.facebook.com - cleaner UI

Corrections to UI of Facebook for mobile browsers: remove useless panels

As of 2022-09-14. See the latest version.

// ==UserScript==
// @name          CSS: m.facebook.com - cleaner UI
// @description   Corrections to UI of Facebook for mobile browsers: remove useless panels
// @author        MK
// @namespace     max44
// @homepage      https://gf.zukizuki.org/en/users/309172-max44
// @match         *://m.facebook.com/*
// @icon          https://static.xx.fbcdn.net/rsrc.php/yD/r/d4ZIVX-5C-b.ico
// @version       1.3
// @license       MIT
// @require       https://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js
// @run-at        document-idle
// ==/UserScript==

(function() {
  'use strict';

  var css = `
  /*Remove MBackNavBar - back arrow header above the current message*/
  #MBackNavBar {
    visibility: hidden !important;
    height: 0px !important;
  }

  /*Remove mDialogHeader
  #mDialogHeader {
    visibility: hidden !important;
    height: 0px !important;
  }*/

  /*Remove MStoriesTray - box with various stories*/
  #MStoriesTray {
    visibility: hidden !important;
    height: 0px !important;
  }

  /*Remove conversation guides*/
  /*#u_0_11, #u_jb_9, #u_1y_8*/
  /*[id^="u_"][id$="_8"],
  [id^="u_"][id$="_9"],
  [id^="u_"][id$="_10"],
  [id^="u_"][id$="_11"]*/
  [class^="_7an"],
  ._4l3w {
    visibility: hidden !important;
    height: 0px !important;
  }

  /*Make smaller clickable area around "Like", "Reply" and "More"*/
  a._2b0a {
    padding: 3px 8px 3px 8px !important;
    /*margin: 0px 0px 7px 0px;*/
  }

  /*Correct place of comments switcher*/
  div > div#add_comment_switcher_placeholder {
    float: unset !important;
    text-align: right !important;
  }

  /*Make darker background for new interface header*/
  /*#mJewelNav {
    background: #30a9d6*/ /*#eea1c6*/ /*#b5cdff*/ /*!important;
  }*/
  `;

  if (typeof GM_addStyle != 'undefined') {
    GM_addStyle(css);
  } else if (typeof PRO_addStyle != 'undefined') {
    PRO_addStyle(css);
  } else if (typeof addStyle != 'undefined') {
    addStyle(css);
  } else {
    var node = document.createElement('style');
    node.type = 'text/css';
    node.appendChild(document.createTextNode(css));
    document.documentElement.appendChild(node);
  }

  var divSwitcher = null;
  var divStory = null;
  var divComments = null;
  var i;
  let waitForStory = setInterval(function() { //Check page content constantly
    divSwitcher = document.getElementById("add_comment_switcher_placeholder");

    if (divSwitcher != null) {
      divStory = divSwitcher.parentNode;
      for (i = 0; i < divStory.childNodes.length; i++) {
        if (divStory.childNodes[i].className.indexOf("_333v _45kb") > -1) { //Section to put comments switcher before
          divComments = divStory.childNodes[i];
          break;
        }
      }
      if (divComments != null) divStory.insertBefore(divSwitcher, divComments);
      clearInterval(waitForStory); //Stop waiting
    }
  }, 500); //Interval to check page content

})();