Automatically scrolls to the *next* matching video title, highlighting all matches. Search box, search/stop, next/previous buttons, animated border, no results message. Handles dynamic loading correctly. Does NOT remember previous search.
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// ==UserScript==
// @name YouTube Grid Auto-Scroll & Search (Ultra Optimized - Instant)
// @match https://www.youtube.com/*
// @grant GM_addStyle
// @version 3.0
// @description Automatically scrolls to the *next* matching video title, highlighting all matches. Search box, search/stop, next/previous buttons, animated border, no results message. Handles dynamic loading correctly. Does NOT remember previous search.
// @author Your Name (with further optimization)
// @license MIT
// @namespace https://greasyfork.org/users/1435316
// ==/UserScript==
(function() {
'use strict';
let targetText = "";
let searchBox;
let isSearching = false;
let searchInput;
let searchButton;
let stopButton;
let prevButton; // Previous button
let nextButton; // Next button
let searchTimeout;
const SEARCH_TIMEOUT_MS = 20000; // 20 seconds
const SCROLL_DELAY_MS = 750;
const MAX_SEARCH_LENGTH = 255;
let highlightedElements = []; // Array to store all highlighted elements
let currentHighlightIndex = -1; // Index of *currently* highlighted element in highlightedElements
let lastScrollHeight = 0;
GM_addStyle(`
/* Existing CSS (with additions) */
#floating-search-box {
background-color: #222;
padding: 5px;
border: 1px solid #444;
border-radius: 5px;
display: flex;
align-items: center;
margin-left: 10px;
}
/* Responsive width for smaller screens */
@media (max-width: 768px) {
#floating-search-box input[type="text"] {
width: 150px; /* Smaller width on smaller screens */
}
}
#floating-search-box input[type="text"] {
background-color: #333;
color: #fff;
border: 1px solid #555;
padding: 3px 5px;
border-radius: 3px;
margin-right: 5px;
width: 200px;
height: 30px;
}
#floating-search-box input[type="text"]:focus {
outline: none;
border-color: #065fd4;
}
#floating-search-box button {
background-color: #065fd4;
color: white;
border: none;
padding: 3px 8px;
border-radius: 3px;
cursor: pointer;
height: 30px;
}
#floating-search-box button:hover {
background-color: #0549a8;
}
#floating-search-box button:focus {
outline: none;
}
#stop-search-button {
background-color: #aa0000; /* Red color */
}
#stop-search-button:hover {
background-color: #800000;
}
/* Style for navigation buttons */
#prev-result-button, #next-result-button {
background-color: #444;
color: white;
margin: 0 3px; /* Add some spacing */
}
#prev-result-button:hover, #next-result-button:hover {
background-color: #555;
}
.highlighted-text {
position: relative; /* Needed for the border to be positioned correctly */
z-index: 1; /* Ensure the border is on top of other elements */
}
/* Creates the animated border effect */
.highlighted-text::before {
content: '';
position: absolute;
top: -2px;
left: -2px;
right: -2px;
bottom: -2px;
border: 2px solid transparent; /* Transparent border to start */
border-radius: 8px; /* Rounded corners */
background: linear-gradient(to right, red, orange, yellow, green, blue, indigo, violet); /* Rainbow gradient */
background-size: 400% 400%; /* Make the gradient larger than the element */
animation: gradientAnimation 5s ease infinite; /* Animate the background position */
z-index: -1; /* Behind the content */
}
/* Keyframes for the gradient animation */
@keyframes gradientAnimation {
0% {
background-position: 0% 50%;
}
50% {
background-position: 100% 50%;
}
100% {
background-position: 0% 50%;
}
}
/* Style for the error message */
#search-error-message {
color: red;
font-weight: bold;
padding: 5px;
position: fixed; /* Fixed position */
top: 50px; /* Position below the masthead (adjust as needed)*/
left: 50%;
transform: translateX(-50%); /* Center horizontally */
background-color: rgba(0, 0, 0, 0.8); /* Semi-transparent black */
color: white;
border-radius: 5px;
z-index: 10000; /* Ensure it's on top */
display: none; /* Initially hidden */
}
/* Style for the no results message */
#search-no-results-message {
color: #aaa; /* Light gray */
padding: 5px;
position: fixed;
top: 50px; /* Same position as error message */
left: 50%;
transform: translateX(-50%);
background-color: rgba(0, 0, 0, 0.8);
border-radius: 5px;
z-index: 10000;
display: none; /* Initially hidden */
}
`);
// --- Create the Search Box ---
function createSearchBox() {
searchBox = document.createElement('div');
searchBox.id = 'floating-search-box';
searchBox.setAttribute('role', 'search');
searchInput = document.createElement('input');
searchInput.type = 'text';
searchInput.placeholder = 'Search to scroll...';
// IMPORTANT: Remove GM_getValue. It will now start blank.
searchInput.value = ''; // Start with an empty search box
searchInput.setAttribute('aria-label', 'Search within YouTube grid');
searchInput.maxLength = MAX_SEARCH_LENGTH;
searchButton = document.createElement('button');
searchButton.textContent = 'Search';
searchButton.addEventListener('click', searchAndScroll);
searchButton.setAttribute('aria-label', 'Start search');
// Previous and Next buttons
prevButton = document.createElement('button');
prevButton.textContent = 'Prev';
prevButton.id = 'prev-result-button';
prevButton.addEventListener('click', () => navigateResults(-1)); // -1 for previous
prevButton.setAttribute('aria-label', 'Previous result');
prevButton.disabled = true; // Initially disabled
nextButton = document.createElement('button');
nextButton.textContent = 'Next';
nextButton.id = 'next-result-button';
nextButton.addEventListener('click', () => navigateResults(1)); // 1 for next
nextButton.disabled = true; // Initially disabled
stopButton = document.createElement('button');
stopButton.textContent = 'Stop';
stopButton.id = 'stop-search-button';
stopButton.addEventListener('click', stopSearch);
stopButton.setAttribute('aria-label', 'Stop search');
searchBox.appendChild(searchInput);
searchBox.appendChild(searchButton);
searchBox.appendChild(prevButton);
searchBox.appendChild(nextButton);
searchBox.appendChild(stopButton);
const mastheadEnd = document.querySelector('#end.ytd-masthead');
const buttonsContainer = document.querySelector('#end #buttons');
if (mastheadEnd) {
if(buttonsContainer){
mastheadEnd.insertBefore(searchBox, buttonsContainer);
} else{
mastheadEnd.appendChild(searchBox);
}
} else {
console.error("Could not find the YouTube masthead's end element.");
showErrorMessage("Could not find the YouTube masthead. Search box placed at top of page.");
document.body.insertBefore(searchBox, document.body.firstChild); //fallback
}
}
// --- Show Error Message ---
function showErrorMessage(message) {
let errorDiv = document.getElementById('search-error-message');
if (!errorDiv) {
errorDiv = document.createElement('div');
errorDiv.id = 'search-error-message';
document.body.appendChild(errorDiv);
}
errorDiv.textContent = message;
errorDiv.style.display = 'block';
setTimeout(() => {
errorDiv.style.display = 'none';
}, 5000); // Hide after 5 seconds
}
// --- Show "No Results" Message ---
function showNoResultsMessage() {
let noResultsDiv = document.getElementById('search-no-results-message');
if (!noResultsDiv) {
noResultsDiv = document.createElement('div');
noResultsDiv.id = 'search-no-results-message';
noResultsDiv.textContent = "No matching results found.";
document.body.appendChild(noResultsDiv);
}
noResultsDiv.style.display = 'block';
setTimeout(() => {
noResultsDiv.style.display = 'none';
}, 5000);
}
// --- Stop Search Function ---
function stopSearch() {
isSearching = false;
clearTimeout(searchTimeout);
currentHighlightIndex = -1; // Reset current highlight index
// Remove highlighting, but keep the array for potential re-use
document.querySelectorAll('.highlighted-text').forEach(el => {
el.classList.remove('highlighted-text');
el.style.position = '';
});
updateNavButtons(); // Disable buttons
}
// --- Navigate Between Results ---
function navigateResults(direction) {
if (highlightedElements.length === 0) return;
currentHighlightIndex += direction;
// Wrap around
if (currentHighlightIndex < 0) {
currentHighlightIndex = highlightedElements.length - 1;
} else if (currentHighlightIndex >= highlightedElements.length) {
currentHighlightIndex = 0;
}
highlightedElements[currentHighlightIndex].scrollIntoView({ behavior: 'auto', block: 'center' });
updateNavButtons();
}
// --- Update Navigation Buttons State ---
function updateNavButtons() {
prevButton.disabled = highlightedElements.length <= 1;
nextButton.disabled = highlightedElements.length <= 1;
}
// --- Optimized Search and Scroll Function ---
function searchAndScroll() {
if (isSearching) return;
isSearching = true;
clearTimeout(searchTimeout);
targetText = searchInput.value.trim().toLowerCase();
if (!targetText) {
isSearching = false;
return;
}
// IMPORTANT: Remove GM_setValue. Don't save the search term.
// Get all *visible* media elements
const mediaElements = Array.from(document.querySelectorAll('ytd-rich-grid-media:not([style*="display: none"])'));
let foundMatch = false;
// Find *all* matching elements and add them to highlightedElements
highlightedElements = []; // Clear previous results
for (let i = 0; i < mediaElements.length; i++) {
const titleElement = mediaElements[i].querySelector('#video-title');
if (titleElement && titleElement.textContent.toLowerCase().includes(targetText)) {
mediaElements[i].classList.add('highlighted-text');
highlightedElements.push(mediaElements[i]);
foundMatch = true;
}
}
// Find the next match index, starting from the *element after* the current one
let nextMatchIndex = -1;
if (currentHighlightIndex !== -1 && highlightedElements.length > 0) {
// Find the DOM element corresponding to currentHighlightIndex
let currentElement = highlightedElements[currentHighlightIndex];
// Get all currently visible media elements *again* (because more might have loaded)
const currentMediaElements = Array.from(document.querySelectorAll('ytd-rich-grid-media:not([style*="display: none"])'));
// Find the index of the current element within the *current* DOM
let currentDomIndex = currentMediaElements.indexOf(currentElement);
// Start searching from the element *after* the current one in the DOM
for (let i = currentDomIndex + 1; i < currentMediaElements.length; i++) {
const titleElement = currentMediaElements[i].querySelector('#video-title');
if (titleElement && titleElement.textContent.toLowerCase().includes(targetText)) {
// Find the index of this element within highlightedElements
nextMatchIndex = highlightedElements.indexOf(currentMediaElements[i]);
break;
}
}
} else {
// If no previous match, find the first one
if (highlightedElements.length > 0) {
nextMatchIndex = 0;
}
}
if (nextMatchIndex !== -1) {
// Scroll to the next match
highlightedElements[nextMatchIndex].scrollIntoView({ behavior: 'auto', block: 'center' });
currentHighlightIndex = nextMatchIndex;
updateNavButtons();
isSearching = false; // Stop searching after finding a match
} else {
// No new match found in the currently visible elements, scroll down
lastScrollHeight = document.documentElement.scrollHeight;
window.scrollTo({ top: lastScrollHeight, behavior: 'auto' });
// Set a timeout to continue searching after a delay (to allow new content to load)
searchTimeout = setTimeout(() => {
if (!isSearching) return;
// Check if we've reached the end of the page
if (document.documentElement.scrollHeight === lastScrollHeight) {
stopSearch();
if (!foundMatch) {
showNoResultsMessage();
}
} else {
isSearching = false; // Allow re-entry into searchAndScroll
searchAndScroll(); // Continue searching
}
}, SCROLL_DELAY_MS);
}
// Set overall search timeout (for extreme cases)
searchTimeout = setTimeout(() => {
stopSearch();
showErrorMessage("Search timed out.");
}, SEARCH_TIMEOUT_MS);
}
// --- Initialization ---
createSearchBox();
})();