Adds a collapsible toggle to posts in your notifications for media
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// ==UserScript==
// @name Mastodon - Collapse Media in Notifications By Default
// @namespace http://tampermonkey.net/
// @version 0.8.0
// @description Adds a collapsible toggle to posts in your notifications for media
// @author LupoMikti
// @license MIT
// @match https://mastodon.social/*
// @match https://mstdn.jp/*
// @match https://mastodon.art/*
// @match https://pawoo.net/*
// @match https://baraag.net/*
// @icon https://www.google.com/s2/favicons?sz=64&domain=mastodon.social
// @grant none
// @run-at document-end
// ==/UserScript==
(function() {
'use strict';
let css = `.media-toggle {
margin-top: 10px;
& span {
cursor: pointer;
}
}
.muted .media-toggle span {
color: #606984;
filter: brightness(1.5);
}
article:not([data-toggle-open]) .notification .status > .media-gallery,
article:not([data-toggle-open]) .notification .status > .media-gallery__item,
article[data-toggle-open="false"] .notification .status > .media-gallery,
article[data-toggle-open="false"] .notification .status > .media-gallery__item {
display: none;
}
.notification .status-card.expanded .status-card__image {
visibility: collapse;
}
`
// This waits until we have the notifications response JSON then makes the script wait 1 second more for all DOM changes to take place
var origOpen = XMLHttpRequest.prototype.open
XMLHttpRequest.prototype.open = function(method, url) {
this.addEventListener('load', function() {
// console.log('XHR finished loading', method, this.status, url);
if (url.includes('api/v1/notifications') && window.location.pathname.includes(`/notifications`)) {
return setTimeout(init, 1000)
}
})
this.addEventListener('error', function() {
console.log('XHR errored out', method, url)
})
origOpen.apply(this, arguments)
}
window.addEventListener('load', () => {
let oldHref = document.location.href
const bodyObserver = new MutationObserver((mutationList) => {
if (oldHref !== document.location.href) {
oldHref = document.location.href
refreshScript()
}
})
bodyObserver.observe(document.body, {childList: true, subtree: true})
})
// We cannot inject a style element without the nonce, so get it and use it
let styleNonce = document.querySelector('meta[name=style-nonce]').content
document.head.insertAdjacentHTML('beforeend',`<style id="notif-media-toggle-css" nonce="${styleNonce}">${css}</style>`)
let notificationColumn
window.addEventListener('popstate', refreshScript)
function init() {
notificationColumn = document.querySelector('.column[aria-label="Notifications"] .item-list')
let initialPostsWithMedia = document.querySelectorAll(`.item-list article[style=""] .notification .status > .media-gallery,
.item-list article[style=""] .notification .status > .media-gallery__item,
.item-list article:not(article[style]) .notification .status > .media-gallery,
.item-list article:not(article[style]) .notification .status > .media-gallery__item`)
initialPostsWithMedia.forEach((mediaSection) => {insertToggle(mediaSection)})
let insertedToggles = document.querySelectorAll('.media-toggle')
for (let toggle of insertedToggles) {
toggle.addEventListener('click', doToggle)
}
startObserving()
}
function refreshScript() {
if (!document.location.pathname.includes(`/notifications`)) return
return setTimeout(init, 500)
}
function getNthAncestor(node, n) {
while (node && n > 0) {
node = node.parentNode
n--
}
return node
}
// Inserts the toggle span into a post
function insertToggle(mediaSection, parentArticleId = null, wasKeptOpen = 'false') {
if (!mediaSection) return
if (mediaSection.parentNode.querySelector('.media-toggle')) return
const showingMedia = (wasKeptOpen === 'true')
if (!parentArticleId) {
parentArticleId = getNthAncestor(mediaSection, 6).getAttribute('data-id')
}
mediaSection.insertAdjacentHTML('beforebegin',
`<div class="media-toggle" data-toggle-target="article[data-id='${parentArticleId}'] .${mediaSection.className}"><span>Click to ${showingMedia ? 'hide' : 'show'} media</span></div>`)
mediaSection.parentNode.querySelector('.media-toggle').addEventListener('click', doToggle)
}
// Click handler for the toggle span
function doToggle(event) {
if(event.target.nodeName !== 'SPAN') return
let toggle = event.currentTarget
let toggleTargetSelector = toggle?.getAttribute('data-toggle-target')
let parentArticleSelector = toggleTargetSelector?.replace(/ \..+/,'')
let toggleTarget = document.querySelector(toggleTargetSelector)
let parentArticle = document.querySelector(parentArticleSelector)
if (!toggleTarget.checkVisibility()) {
parentArticle.setAttribute('data-toggle-open', 'true')
toggleTarget.style = toggleTarget.style.cssText + " display: grid;"
toggle.childNodes[0].innerText = "Click to hide media"
}
else {
parentArticle.setAttribute('data-toggle-open', 'false')
toggleTarget.style = toggleTarget.style.cssText.replace(" display: grid;", "")
toggle.childNodes[0].innerText = "Click to show media"
}
}
// Mutation observer needed because page dynamicaly hides + removes/adds post content as you scroll
function startObserving() {
const observeColumn = (mutationList) => {
for (const mutation of mutationList) {
if (mutation.type === 'attributes') {
if (mutation.target.nodeName !== 'ARTICLE') continue // if the target is not an article element skip
if (!mutation.oldValue) continue // if the target's old attribute value is empty, skip
if (mutation.target.style.cssText) continue // if the target article's style attribute is NOT being changed to empty, skip
insertToggle(mutation.target.querySelector('.notification .status > .media-gallery, .notification .status > .media-gallery__item'),
mutation.target.getAttribute('data-id'),
mutation.target.getAttribute('data-toggle-open') || 'false')
// continue
}
// for logging
// if (mutation.type === 'childList') {
// if (mutation.addedNodes.length > 0) {
// console.log(`== Added Nodes ==`)
// console.log(mutation.addedNodes)
// console.log(`== End Nodes ==`)
// }
// if (mutation.removedNodes.length > 0) {
// console.log(`== Removed Nodes ==`)
// console.log(mutation.removedNodes)
// console.log(`== End Nodes ==`)
// }
// continue
// }
}
}
const observer = new MutationObserver(observeColumn)
observer.observe(notificationColumn, {
subtree: true,
// childList: true,
attributeFilter: ["style"],
attributeOldValue: true
})
}
})();