Quick opcode filter for M&B mod wiki

Add a small input box in the operations and triggers pages to easily look up, find and filter specific Mount&Blade 1.011 and Warband module system opcodes and triggers.

נכון ליום 30-07-2025. ראה הגרסה האחרונה.

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        Quick opcode filter for M&B mod wiki
// @description Add a small input box in the operations and triggers pages to easily look up, find and filter specific Mount&Blade 1.011 and Warband module system opcodes and triggers.
// @namespace   https://greasyfork.org/users/4813
//
// @match       https://mbcommands.fandom.com/wiki/Operations
// @match       https://antifandom.com/mbcommands/wiki/Operations
//
// @match       https://mbcommands.fandom.com/wiki/Triggers
// @match       https://antifandom.com/mbcommands/wiki/Triggers
//
// @icon        https://static.wikia.nocookie.net/mount26blade20mooders20reference/images/4/4a/Site-favicon.ico/revision/latest
// @version     2025.07.30.2
// @author      Swyter
// @license     GNU GPLv3
// @grant       none
// @run-at      document-start
// ==/UserScript==

/* swy: append our new filter input box HTML element into the page */
search=document.createElement("input")
search.setAttribute("id", "opfilter")
search.setAttribute("type", "text")
search.setAttribute("spellcheck", "false")
search.setAttribute("placeholder", "Filter operations or triggers... :)")
document.documentElement.appendChild(search)

/* swy: append a new inline CSS stylesheet for our stuff into the page,
        before it loads completely to avoid flicker */
style=document.createElement("style")
style.textContent = `
  .operation[hidden],
  .operation[hidden] + dl,
  h2[hidden], h3[hidden],

  body[opfilter] .mw-parser-output > p:not(.operation),
  body[opfilter] .mw-parser-output > pre,
  body[opfilter] .mw-parser-output > ol,
  body[opfilter] .mw-parser-output > ul,
  body[opfilter] .mw-parser-output > *:not(.operation) + dl,
  body[opfilter] .mw-parser-output > div,
  body[opfilter] .mw-parser-output > table,

  /* swy: on mobile content is inside <section> blocks, go figure */
  body[opfilter] .mw-parser-output section > p:not(.operation),
  body[opfilter] .mw-parser-output section > pre,
  body[opfilter] .mw-parser-output section > ol,
  body[opfilter] .mw-parser-output section > ul,
  body[opfilter] .mw-parser-output section > *:not(.operation) + dl,
  body[opfilter] .mw-parser-output section > div,
  body[opfilter] .mw-parser-output section > table,

  aside.page__right-rail,                    /* swy: get rid of the useless right block cruft from Fandom; usually only shows ads */
  div.main-page-box:has(a[href*=greasyfork]) /* swy: get rid of the tip mentioning this userscript if it's already installed */
  {
    display: none !important; /* swy: hide all the flowing text, explanations and tables while in filter mode */
  }

  input#opfilter
  {
    position: fixed;
    width: calc(100dvw - (20dvw + 20dvw)); /* swy: center it leaving 20% of page width at either side */
    left: calc(20dvw);
    top: calc(100dvh - 20px - 42px);
    box-shadow: 0 0 4px black, 0 0 40px black, 0 0 100px black;
    opacity: .8;
    z-index: 300; /* swy: make it appear when outside of the HTML <body>, the input element gets added to the HTML root */
    font-size: x-large;
    border: none;
    border-radius: 2px;
    padding: 3px;
  }

  input#opfilter:not(:focus)
  {
    opacity: .35; /* swy: fade it out when the input box is not focused */
  }

  .main-container, .page
  {
    //overflow-x: auto; /* swy: make it so that the search box stays on the viewport at all times on mobile */
  }

  * { scroll-margin-top: 100px; } /* swy: fix scrolling to an element but getting hidden by the top bar: https://stackoverflow.com/a/59253905/674685 */
`
document.documentElement.appendChild(style)

/* swy: on every new typed input do this */
search.oninput=function(e)
{
  /* swy: hide all the non-operation stuff (text, explanations, ...) when using the search box; make it clean */
  document.body.setAttribute("opfilter", "true")

  /* swy: get a list of every operation, get the search text the user typed, split into words */
  operations  = document.querySelectorAll(".operation");
  search_text = e.target.value

  search_elems = search_text.toLowerCase().split(/\s+/)

  /* swy: go across every operation in the page and show it, if it contains
          *every* word in the filter, or just hide it otherwise */
  for (var op of operations)
  {
    matches_all = true

    for (var el of search_elems)
      if (!op.id.includes(el))
        matches_all = false

    if (matches_all)
      op.removeAttribute("hidden")
    else
      op.setAttribute("hidden", "true")
  }

  /* swy: hide empty headers (with no operation block hanging from it) */
  wiki_content = document.querySelector(".mw-parser-output")
  cur_elem     = wiki_content.lastElementChild
  parent_ctx = 0
  ctx = 0
  /* swy: do this for every element inside the actual wiki content in the page; from bottom to top,
          so that we can get the number of elements before arriving into their header */
  do
  {
    cur_elem_visible = !!cur_elem.offsetParent; /* swy: https://stackoverflow.com/a/21696585/674685 */

    /* swy: on the mobile page the <p> sections next to <h2> are wrapped in <section> blocks,
            so everything inside can be hidden, but the parent <section> still appears as visible
            PS: functions like checkVisibility() still consider a borderless zero-pixel <section> element as visible. webdev'ing being a trainwreck as usual */
    if (cur_elem.nodeName == "SECTION")
      cur_elem_visible = cur_elem.getBoundingClientRect().height > 0;

    /* swy: if we're some kind of header HTML element (note that the visibility doesn't matter) */
    if (cur_elem.nodeName.length == 2 && cur_elem.nodeName[0] == 'H' && cur_elem.nodeName[1] <= '9')
    {
      h_number = +cur_elem.nodeName[1] /* swy: get the header number: 'h3' -> 3 */

      /* swy: if we're an H4 or H3 (smaller headers) and we have visible items, OR
              if we're a H2 (top-most header) and there were visible items since the last H2, show it */
      if ((ctx > 0 && h_number > 2) || (parent_ctx > 0 && h_number == 2))
        cur_elem.removeAttribute("hidden")
      else /* swy: otherwise hide it */
        cur_elem.setAttribute("hidden", "true")

      /* swy: reset the item count that we held since the last top-level header */
      if (h_number == 2)
        parent_ctx = 0

      /* swy: reset the item count that we held since the last smaller header */
      ctx = 0
    }
    /* swy: we're a visible operation block; so increment the count */
    else if(cur_elem_visible)
    {
      ctx++; parent_ctx++
    }
  } while (cur_elem = cur_elem.previousElementSibling)

  /* swy: scroll into the first (visible) operation that matches our search, if any */
  if (first_visible_op = document.querySelector('.operation:not([hidden])'))
      first_visible_op.scrollIntoView();
}