Greasy Fork is available in English.
Automatically removes email signature for free users of Proton Mail
当前为
// ==UserScript==
// @name Proton Mail Signature Remover
// @description Automatically removes email signature for free users of Proton Mail
// @version 2.0.7
// @author guihkx
// @match https://mail.protonmail.com/*
// @match https://mail.proton.me/*
// @run-at document-idle
// @license MIT; https://opensource.org/licenses/MIT
// @namespace https://github.com/guihkx
// @icon https://mail.proton.me/assets/favicon.ico
// @homepageURL https://github.com/guihkx/user-scripts
// @supportURL https://github.com/guihkx/user-scripts/issues
// @noframes
// ==/UserScript==
/**
* Changelog:
*
* v2.0.7 (2024-01-09):
* - Remove debug statement.
*
* v2.0.6 (2024-01-09):
* - Update selector for the HTML composer.
* - Use 'instanceof' where applicable.
*
* v2.0.5 (2022-10-27):
* - Fix script icon.
*
* v2.0.4 (2022-10-27):
* - Fix compatibility with Proton Mail v5.0.10.
* - Prevent script from running twice due to nested frames.
*
* v2.0.3 (2022-05-25):
* - Fixed signature in text-mode editor, again (why do they keep changing it?)
* - Added support for their new domain (mail.proton.me)
* - Updated @icon metadata
* - Replaced 'ProtonMail' by 'Proton Mail'
*
* v2.0.2 (2022-04-19):
* - Updated a bunch of class names, so now the script should work again.
* - Fixed signature detection in the text-only editor.
*
* v2.0.1 (2022-02-08):
* - Fixed signature not being removed in the HTML composer ("rich text editor").
* - Added logging for when a signature is found and removed.
*
* v2.0.0 (2021-10-03):
* - Huge code rewrite
* - Remove support for old.protonmail.com (Sorry!)
* - Now removes the signature from both HTML and text-based emails (previously it could only do HTML-based ones)
* - Updated script icon
*
* v1.0.0 (2020-04-28):
* - First release
*/
;(() => {
const log = console.log.bind(console, '[Proton Mail Signature Remover]')
log('Waiting for the composer container...')
const id = setInterval(() => {
const composerContainer = document.querySelector('div.app-root > div:not([class]):last-child')
if (composerContainer === null) {
return
}
clearInterval(id)
log('Ready.')
const composerContainerMonitor = new MutationObserver(observeComposerContainer)
composerContainerMonitor.observe(composerContainer, {
childList: true
})
}, 500)
function observeComposerContainer (mutations) {
for (const mutation of mutations) {
for (const addedNode of mutation.addedNodes) {
if (!(addedNode instanceof HTMLElement)) {
continue
}
// Determine if this is a text-only email.
const textareaEmailBody = addedNode.querySelector('textarea[data-testid="editor-textarea"]')
if (textareaEmailBody !== null) {
log('A text-only email composer has been rendered.')
// Although at this point the text-only email composer has been rendered,
// the textarea that contains the email body will still be empty.
// As I couldn't figure out a proper way to determine when the textarea has been filled,
// this ugly, hacky approach keeps monitoring the textarea until its value is not empty anymore.
removeTextSignature(textareaEmailBody)
return
}
// This is a HTML-based email.
const composerFrame = addedNode.querySelector('iframe[data-testid="rooster-iframe"]')
if (composerFrame === null) {
continue
}
composerFrame.addEventListener('load', () => {
log('A HTML email composer has been rendered.')
const roosterEditor = composerFrame.contentDocument.getElementById('rooster-editor')
if (!roosterEditor) {
log('Fatal: `rooster-editor` was not found.')
return
}
const signatureNode = roosterEditor.querySelector('div.protonmail_signature_block')
if (signatureNode) {
// Signature node has been already rendered, remove it directly.
removeHTMLSignature(signatureNode)
} else {
// Signature node hasn't been rendered yet, so monitor it.
setupHTMLComposerObserver(roosterEditor)
}
})
return
}
}
}
function removeTextSignature (textareaEmailBody) {
const textSignature = /\n\n^Sent with Proton Mail secure email\.$/m
// Monitors the textarea containing the text-based email body.
// Runs at every 100ms and stops once the textarea's value is not empty.
const id = setInterval(() => {
if (textareaEmailBody.value === '') {
return
}
if (!textSignature.test(textareaEmailBody.value)) {
clearInterval(id)
return
}
clearInterval(id)
textareaEmailBody.value = textareaEmailBody.value.replace(textSignature, '')
log('Signature successfully removed from text-only email.')
// Move the text cursor back to the beginning of the textarea.
textareaEmailBody.setSelectionRange(0, 0)
}, 100)
}
function setupHTMLComposerObserver (roosterEditor) {
const htmlComposerMonitor = new MutationObserver(detectHTMLSignatureNode)
htmlComposerMonitor.observe(roosterEditor, {
childList: true
})
}
function detectHTMLSignatureNode (mutations, observer) {
for (const mutation of mutations) {
for (const addedNode of mutation.addedNodes) {
if (!(addedNode instanceof addedNode.ownerDocument.defaultView.HTMLElement)) {
continue
}
if (!addedNode.classList.contains('protonmail_signature_block')) {
continue
}
// Found the signature node, stop observing and remove it.
observer.disconnect()
removeHTMLSignature(addedNode)
return
}
}
}
function removeHTMLSignature (signatureNode) {
// The signature block consists of 3 main nodes:
//
// <div><br></div>
// <div><br></div>
// <div class="protonmail_signature_block">
// <div class="protonmail_signature_block-user protonmail_signature_block-empty"></div>
// <div class="protonmail_signature_block-proton">Sent with <a href="https://protonmail.com/" target="_blank">ProtonMail</a> Secure Email.</div>
// </div>
//
// The following loop removes the first two blank lines preceding the Proton Mail signature node itself.
for (let i = 0; i < 2; i++) {
const prevSiblingNode = signatureNode.previousElementSibling
if (!(prevSiblingNode instanceof HTMLDivElement)) {
break
}
const blankLine = prevSiblingNode.firstElementChild
if (!(blankLine instanceof HTMLBRElement)) {
break
}
prevSiblingNode.remove()
}
// Finally, remove the signature node itself.
signatureNode.remove()
log('Signature successfully removed from HTML email.')
}
})()