lib:textjack

3/5/2025, 7:16:43 PM
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// ==UserScript==
// @name        lib:textjack
// @version     9
// @match       *://*/*
// @run-at      document-start
// @author      rssaromeo
// @license     AGPLv3
// @include     *
// @grant       none
// @icon        data:image/png;base64,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
// @description 3/5/2025, 7:16:43 PM
// @namespace https://greasyfork.org/users/1184528
// ==/UserScript==

Object.assign(window, console)
const a = loadlib("allfuncs")
var textJackList = []

const observedShadowRoots = new WeakSet()
const lastValues = new WeakMap()

function replaceText(text) {
  let oldtext = text
  for (let i = 0; i < textJackList.length; i++) {
    text = textJackList[i](text)
    if (text !== oldtext) {
      return replaceText(text)
    }
  }
  return text
}

/**
 * Fast node scanner targeting text nodes directly
 */
function jackNode(node) {
  if (node.nodeType === 3) { // Text Node
    // FIX: Skip text replacement if the text node belongs to an input, textarea, or contenteditable element
    const parent = node.parentElement
    if (parent) {
      const tag = parent.tagName
      if (tag === 'INPUT' || tag === 'TEXTAREA' || parent.isContentEditable) {
        return
      }
    }

    const currentVal = node.nodeValue
    if (!currentVal || !currentVal.trim()) return

    if (currentVal !== lastValues.get(node)) {
      const newVal = replaceText(currentVal)
      lastValues.set(node, newVal)
      node.nodeValue = newVal
    }
  }
}

/**
 * Creates/appends a MutationObserver for a given root (body or shadow root)
 */
function observeRoot(root) {
  const observer = new MutationObserver((mutations) => {
    for (let i = 0; i < mutations.length; i++) {
      const mutation = mutations[i]
      if (mutation.type === "childList") {
        mutation.addedNodes.forEach((n) => {
          if (n.nodeType === 1) { // Element Node
            jackRecursive(n)
          } else if (n.nodeType === 3) { // Text Node
            jackNode(n)
          }
        })
      } else if (mutation.type === "characterData") {
        jackNode(mutation.target)
      }
    }
  })

  observer.observe(root, {
    childList: true,
    subtree: true,
    characterData: true,
  })
}

/**
 * Ultra-fast native TreeWalker replacement for filterExistingText
 */
function jackRecursive(root) {
  // FIX: Added a filter logic to the TreeWalker to skip form inputs completely
  const walker = document.createTreeWalker(
    root,
    NodeFilter.SHOW_TEXT | NodeFilter.SHOW_ELEMENT,
    {
      acceptNode: function(node) {
        if (node.nodeType === 1) {
          const tag = node.tagName;
          if (tag === 'INPUT' || tag === 'TEXTAREA' || node.isContentEditable) {
            return NodeFilter.FILTER_REJECT; // Reject element and all its children
          }
        }
        return NodeFilter.FILTER_ACCEPT;
      }
    }
  )

  let currentNode = walker.currentNode
  while (currentNode) {
    if (currentNode.nodeType === 3) {
      jackNode(currentNode)
    } else if (currentNode.nodeType === 1 && currentNode.shadowRoot) {
      if (!observedShadowRoots.has(currentNode.shadowRoot)) {
        observedShadowRoots.add(currentNode.shadowRoot)
        jackRecursive(currentNode.shadowRoot)
        observeRoot(currentNode.shadowRoot)
      }
    }
    currentNode = walker.nextNode()
  }
}

// Intercept future dynamic Shadow DOM generation instantly
const originalAttachShadow = Element.prototype.attachShadow
Element.prototype.attachShadow = function (init) {
  const shadowRoot = originalAttachShadow.call(this, init)
  setTimeout(() => {
    if (!observedShadowRoots.has(shadowRoot)) {
      observedShadowRoots.add(shadowRoot)
      jackRecursive(shadowRoot)
      observeRoot(shadowRoot)
    }
  }, 0)
  return shadowRoot
}

// Initialize environment
function runInitialization() {
  jackRecursive(document.body)
  observeRoot(document.body)
}

let waitingForBody = !document.body
if (!waitingForBody) {
  runInitialization()
}

loadlib("libloader").savelib("textjack", function newTextJack(cb) {
  textJackList.push(cb)
  if (document.body) {
    runInitialization()
  } else {
    waitingForBody = true
  }
})

a.bodyload().then(() => {
  if (waitingForBody) {
    runInitialization()
  }
})