Removes the forced ProtonMail signature from the 'New message' textboxes
// ==UserScript==
// @name ProtonMail - remove forced signature
// @namespace darkred
// @version 2023.6.1
// @description Removes the forced ProtonMail signature from the 'New message' textboxes
// @author darkred
// @license MIT
// @include https://mail.protonmail.com/*
// @include https://mail.proton.me/*
// @include https://protonirockerxow.onion/*
// @include https://protonmailrmez3lotccipshtkleegetolb73fuirgj7r4o4vfu7ozyd.onion/*
// @grant none
// @require https://greasyfork.org/scripts/21927-arrive-js/code/arrivejs.js
// @supportURL https://github.com/darkred/Userscripts/issues
// @icon https://proton.me/favicons/favicon.ico
// ==/UserScript==
const elementToWatch = 'iframe[title="Email composer"]';
document.arrive(elementToWatch, function () {
let iframe = this.contentDocument; // refers to the newly created element
const config = {
childList: true,
subtree: true
};
const callback = function(mutationList, observer) {
mutationList.forEach( (mutation) => {
mutation.addedNodes.forEach( (node) => {
const refNode = 'protonmail_signature_block';
if (node.className === refNode) {
// DOM STRUCTURE:
//
// The 2 previous element siblings of the main signature element, '.protonmail_signature_block', both contain a <div> element with a <br> inside, i.e. <br> = <div> \ <br> ) :
// <div> \ <br> | <div> \ <br> | .protonmail_signature_block
//
// The '.protonmail_signature_block' itself has either 3 or 2 <div> children which can be:
//
// (when user signature doesn't exist) the (empty) user signature , and the proton signature
// .protonmail_signature_block-user.protonmail_signature_block-empty | .protonmail_signature_block-proton
//
// (when user signature exists) the user signature , 1 <div> \ <br> , and the signature itself
// .protonmail_signature_block-user | <div> \ <br> | .protonmail_signature_block-proton
//
// The script's functionality is:
// 1a. If user signature exists(=it's not empty), to remove the <div> \ <br> element before the last element ('.protonmail_signature_block-proton') ...
// 1b. ... otherwise to remove the 2 <div> \ <br> elements before the main/reference '.protonmail_signature_block' element.
// 2. To remove the last element ('.protonmail_signature_block-proton') itself.
//
// See DOM screenshots: https://imgur.com/a/VEI4nDQ
const signatureProton = '.protonmail_signature_block-proton';
if (!node.firstElementChild.classList.contains('protonmail_signature_block-empty')){
node.querySelector(signatureProton).previousElementSibling.remove();
} else {
node.previousElementSibling.remove();
node.previousElementSibling.remove();
}
node.querySelector(signatureProton).remove();
observer.disconnect();
}
});
});
};
const observer = new MutationObserver(callback);
observer.observe(iframe, config);
});