OSM iD saving indicator

Change tab's title when iD is saving (based on saving modal visibility)

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// ==UserScript==
// @name         OSM iD saving indicator
// @namespace    http://tampermonkey.net/
// @version      1.0
// @description  Change tab's title when iD is saving (based on saving modal visibility)
// @author       JackNUMBER
// @match        https://www.openstreetmap.org/edit*
// @grant        none
// ==/UserScript==

(function() {
  'use strict';

  let state = "idle";
  const originalTitle = document.title;

  // Function to check for the loader image in the iframe
  function checkLoaderVisibility() {
    const iframe = document.querySelector('iframe'); // Select the iframe


    if (iframe) {
      const iframeDocument = iframe.contentDocument || iframe.contentWindow.document;
      const loaderImage = iframeDocument.querySelector('.modal-section.fillL .loader'); // Target loader image in the saving modal

      if (loaderImage) { // Loader is visible
        state = "saving"
        document.title = "Saving...";
      } else { // Loader is hidden
        if (state === "saving") {
          state = "saved"
          document.title = `✔ Saved`; // Tell the saving is done

          setTimeout(() => {
            document.title = originalTitle; // Revert back to the original title
          }, 1500);
          state = "saved"
        }
      }
    }
  }

  // Set an interval to check for the loader's visibility
  setInterval(checkLoaderVisibility, 500); // Check every 500 milliseconds
})();