Follow/Mutual Activity Gradient

Replaces tumblr's new activity box labels with background gradients.

You will need to install an extension such as Tampermonkey, Greasemonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey to install this script.

You will need to install an extension such as Tampermonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey or Userscripts to install this script.

You will need to install an extension such as Tampermonkey to install this script.

You will need to install a user script manager extension to install this script.

(I already have a user script manager, let me install it!)

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

(I already have a user style manager, let me install it!)

// ==UserScript==
// @name        Follow/Mutual Activity Gradient
// @description Replaces tumblr's new activity box labels with background gradients.
// @version     1.0
// @author      dzamie
// @include     https://www.tumblr.com/*
// @namespace   https://github.com/dzamie
// @license     GNU AGPL v3.0
// @run-at      document-idle
// ==/UserScript==


onlyMutuals = true;
hideLabels = true;
// default 1 sec load. increase if it takes a long time to load the activity box
delayms = 1000;

// dark mode
follcolor = "(26,74,35,1)";
mutucolor = "(59,50,98,1)";

// light mode
// follcolor = "(217,248,225,1)";
// mutucolor = "(235,231,255,1)";

const follstyle = `background-image: linear-gradient(to right, rgba(255,0,0,0), rgba${follcolor});`;
const mutustyle = `background-image: linear-gradient(to right, rgba(0,0,0,0), rgba${mutucolor});`;


// activate only when the activity box opens (or closes, but whatever)
const targetNode = document.getElementsByClassName("KTRcB")[6].children[0];
const config = { attributes: false, childList: true, subtree: false};

const callback = (mutationList, observer) => {
  
  setTimeout(function() {
    acts = document.getElementsByClassName("TZgeO");
    for(var i = 0; i < acts.length; i ++) {
      // marked following
      if(acts[i].getElementsByClassName("f4Y1Y").length > 0 && (! onlyMutuals)) {
        acts[i].children[0].style = follstyle;
      }
      // marked mutuals
      if(acts[i].getElementsByClassName("ZbEyz").length > 0) {
        acts[i].children[0].style = mutustyle;
      }
      // marked either
      if(acts[i].getElementsByClassName("AIdpH").length > 0 && hideLabels) {
        acts[i].getElementsByClassName("AIdpH")[0].style = "visibility: hidden";
      }
    }
  }, delayms);
};

const observer = new MutationObserver(callback);
observer.observe(targetNode, config);