Tumblr notes filtering, autoloading & counts

Allows filtering of Tumblr notes by type (with counts) & autoloading of all notes

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 or Violentmonkey 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          Tumblr notes filtering, autoloading & counts
// @include       http://*tumblr.com/post/*
// @description   Allows filtering of Tumblr notes by type (with counts) & autoloading of all notes
// @version       1.3
// @author        JesseW
// @contributor   wOxxOm
// @license       MIT License
// @run-at        document-start
// @grant         none
// @namespace https://greasyfork.org/users/2423
// ==/UserScript==

// The original code for autoloading came from wOxxOm's script,
//available at: https://greasyfork.org/en/scripts/8157-tumblr-notes-autoload

window.addEventListener('DOMContentLoaded', function () {
  filterWhenLoadingMoreNotes();
  document.querySelector('.notes') .insertAdjacentHTML(
    'beforebegin', 
    '<div style="border: 2px black ridge">'
    + '<input checked id="with_commentary_checkbox" type="checkbox"/>Reblogs with commentary (<span id="with_commentary_count"></span>)'
    + '<br/><input checked id="reply_checkbox" type="checkbox"/>Replies (<span id="reply_count"></span>)'
    + '<br/><input checked id="reblog_checkbox" type="checkbox"/>Reblogs without commentary  (<span id="reblog_count"></span>)'
    + '<br/><input checked id="like_checkbox" type="checkbox">Likes  (<span id="like_count"></span>)'
    + '<br/><button id="loadallBtn">Load all notes</button></div>')
  document.getElementById('loadallBtn').addEventListener('click', clickMore);
  document.getElementById('with_commentary_checkbox').addEventListener('change', filterNotes);
  document.getElementById('reply_checkbox').addEventListener('change', filterNotes);
  document.getElementById('reblog_checkbox').addEventListener('change', filterNotes);
  document.getElementById('like_checkbox').addEventListener('change', filterNotes);
});

function filterWhenLoadingMoreNotes() {
    var more = document.querySelector('.more_notes_link');
  more.addEventListener('click', filterWhenLoadingMoreNotes);
  if (more) {
      var ob = new MutationObserver(function (mutations) {
      ob.disconnect();
        filterNotes();
        filterWhenLoadingMoreNotes()
    });
    ob.observe(more.parentNode.parentNode, {
      subtree: true,
      childList: true
    });
  }
}

function shouldFilter(note) {
  if (note.classList.contains('more_notes_link_container') ||
     (document.getElementById('with_commentary_checkbox').checked &&
      note.classList.contains('with_commentary')) || 
     (document.getElementById('reply_checkbox').checked &&
      note.classList.contains('reply')) ||
     (document.getElementById('reblog_checkbox').checked &&
      note.classList.contains('reblog') &&
      note.classList.contains('without_commentary')) ||
     (document.getElementById('like_checkbox').checked &&
      note.classList.contains('like'))) {
      return false;
  }
  return true;
}

function filterNotes() {
  var notes = document.querySelectorAll('.note');
  var counts = {'commentary': 0, 'reply': 0, 'reblog': 0, 'like': 0};
  for (var i = 0; i < notes.length; ++i) {
    notes[i].hidden = shouldFilter(notes[i]);
    if (notes[i].classList.contains('with_commentary')) {
      counts['commentary'] += 1
    } else if (notes[i].classList.contains('reply')) {
      counts['reply'] += 1
    } else if (notes[i].classList.contains('reblog') &&
              notes[i].classList.contains('without_commentary')) {
      counts['reblog'] += 1
    } else if (notes[i].classList.contains('like')) {
      counts['like'] += 1
    }
  }
  document.getElementById('with_commentary_count').textContent = counts['commentary'];
  document.getElementById('reply_count').textContent = counts['reply'];
  document.getElementById('reblog_count').textContent = counts['reblog'];
  document.getElementById('like_count').textContent = counts['like'];
}

function clickMore() {
  filterNotes();
  var more = document.querySelector('.more_notes_link');
  if (more) {
    more.click();
    var ob = new MutationObserver(function (mutations) {
      ob.disconnect();
      setTimeout(function () {
        clickMore()
      }, 200);
    });
    ob.observe(more.parentNode.parentNode, {
      subtree: true,
      childList: true
    });
  }
}