Jumps between Q&A blocks with visual feedback, context-awareness, and easy configuration.
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// ==UserScript==
// @name Perplexity Scroll Buttons (AFU IT)
// @namespace PerplexityTools
// @version 1.2
// @description Jumps between Q&A blocks with visual feedback, context-awareness, and easy configuration.
// @author AFU IT
// @match https://*.perplexity.ai/*
// @license MIT
// @grant none
// ==/UserScript==
(function() {
'use strict';
// =================================================================================
// ---
// --- CONFIGURATION DASHBOARD ---
// ---
// =================================================================================
const config = {
// --- Colors ---
colors: {
active: '#20b8cd', // Main button color
holding: '#147a8a', // Color when a button is being held down
disabled: '#777777', // Color for a disabled button (e.g., at top/bottom of page)
},
// --- Timings ---
holdDuration: 300, // Time in ms to distinguish a "click" from a "hold"
scrollCheckThrottle: 150, // How often (in ms) to check scroll position for context-awareness
// --- Positions ---
positions: {
down: '120px', // Distance from the bottom for the down-arrow button
up: '162px', // Distance from the bottom for the up-arrow button
auto: '204px', // Distance from the bottom for the auto-scroll button
right: '20px', // Distance from the right for all buttons
},
// --- Selectors ---
selectors: {
scrollContainer: '.scrollable-container.scrollbar-subtle',
messageBlock: 'div[data-cplx-component="message-block"]', // The target for jumping
},
};
// =================================================================================
// --- Global State ---
let autoScrollInterval = null;
let isAutoScrollEnabled = true;
let pressTimer = null;
// --- Core Functions ---
/**
* Finds the next/previous message block and scrolls to it.
* @param {string} direction - 'up' or 'down'.
* @returns {boolean} - True if a target was found, otherwise false.
*/
function scrollToBlock(direction) {
const scrollContainer = document.querySelector(config.selectors.scrollContainer);
if (!scrollContainer) return false;
const blocks = Array.from(document.querySelectorAll(config.selectors.messageBlock));
if (blocks.length === 0) return false;
const currentScrollTop = scrollContainer.scrollTop;
let targetBlock = null;
if (direction === 'down') {
targetBlock = blocks.find(block => block.offsetTop > currentScrollTop + 10);
} else {
targetBlock = blocks.slice().reverse().find(block => block.offsetTop < currentScrollTop - 10);
}
if (targetBlock) {
scrollContainer.scrollTo({ top: targetBlock.offsetTop, behavior: 'smooth' });
return true;
}
return false;
}
/**
* Checks scroll position and enables/disables buttons accordingly.
*/
function updateButtonStates() {
const sc = document.querySelector(config.selectors.scrollContainer);
const topBtn = document.getElementById('scroll-top-btn');
const bottomBtn = document.getElementById('scroll-bottom-btn');
if (!sc || !topBtn || !bottomBtn) return;
const atTop = sc.scrollTop < 10;
const atBottom = sc.scrollHeight - sc.scrollTop - sc.clientHeight < 10;
// --- Update Top Button ---
if (atTop) {
topBtn.style.backgroundColor = config.colors.disabled;
topBtn.style.opacity = '0.5';
topBtn.style.pointerEvents = 'none';
} else {
topBtn.style.backgroundColor = config.colors.active;
topBtn.style.opacity = '1';
topBtn.style.pointerEvents = 'auto';
}
// --- Update Bottom Button ---
if (atBottom) {
bottomBtn.style.backgroundColor = config.colors.disabled;
bottomBtn.style.opacity = '0.5';
bottomBtn.style.pointerEvents = 'none';
} else {
bottomBtn.style.backgroundColor = config.colors.active;
bottomBtn.style.opacity = '1';
bottomBtn.style.pointerEvents = 'auto';
}
}
/**
* Utility to limit how often a function can run.
*/
function throttle(func, limit) {
let inThrottle;
return function() {
const args = arguments;
const context = this;
if (!inThrottle) {
func.apply(context, args);
inThrottle = true;
setTimeout(() => inThrottle = false, limit);
}
};
}
/**
* Creates and adds all the buttons to the page.
*/
function addScrollButtons() {
document.getElementById('scroll-bottom-btn')?.remove();
document.getElementById('scroll-top-btn')?.remove();
document.getElementById('auto-scroll-btn')?.remove();
const commonStyle = `position: fixed; right: ${config.positions.right}; width: 32px; height: 32px; color: white; border-radius: 50%; display: flex; align-items: center; justify-content: center; cursor: pointer; z-index: 99999; box-shadow: 0 2px 5px rgba(0,0,0,0.2); transition: all 0.2s; user-select: none;`;
// --- Bottom "Down" Button ---
const bottomButton = document.createElement('div');
bottomButton.id = 'scroll-bottom-btn';
bottomButton.innerHTML = '<svg width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M12 5v14M19 12l-7 7-7-7"></path></svg>';
bottomButton.title = 'Click: Next Question | Hold: Scroll to Bottom';
bottomButton.style.cssText = `${commonStyle} bottom: ${config.positions.down}; background: ${config.colors.active};`;
bottomButton.addEventListener('mousedown', function() {
this.style.backgroundColor = config.colors.holding; // Visual feedback for hold
pressTimer = setTimeout(() => {
const sc = document.querySelector(config.selectors.scrollContainer);
if (sc) sc.scrollTo({ top: sc.scrollHeight, behavior: 'smooth' });
pressTimer = null;
}, config.holdDuration);
});
bottomButton.addEventListener('mouseup', function() {
this.style.backgroundColor = config.colors.active;
if (pressTimer) {
clearTimeout(pressTimer);
if (!scrollToBlock('down')) { // Fallback if no block found
const sc = document.querySelector(config.selectors.scrollContainer);
if (sc) sc.scrollTo({ top: sc.scrollHeight, behavior: 'smooth' });
}
}
});
bottomButton.addEventListener('mouseleave', function() { this.style.backgroundColor = config.colors.active; clearTimeout(pressTimer); });
// --- Top "Up" Button ---
const topButton = document.createElement('div');
topButton.id = 'scroll-top-btn';
topButton.innerHTML = '<svg width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M12 19V5M5 12l7-7 7 7"></path></svg>';
topButton.title = 'Click: Previous Question | Hold: Scroll to Top';
topButton.style.cssText = `${commonStyle} bottom: ${config.positions.up}; background: ${config.colors.active};`;
topButton.addEventListener('mousedown', function() {
this.style.backgroundColor = config.colors.holding;
pressTimer = setTimeout(() => {
const sc = document.querySelector(config.selectors.scrollContainer);
if (sc) sc.scrollTo({ top: 0, behavior: 'smooth' });
pressTimer = null;
}, config.holdDuration);
});
topButton.addEventListener('mouseup', function() {
this.style.backgroundColor = config.colors.active;
if (pressTimer) {
clearTimeout(pressTimer);
if (!scrollToBlock('up')) { // Fallback if no block found
const sc = document.querySelector(config.selectors.scrollContainer);
if (sc) sc.scrollTo({ top: 0, behavior: 'smooth' });
}
}
});
topButton.addEventListener('mouseleave', function() { this.style.backgroundColor = config.colors.active; clearTimeout(pressTimer); });
// --- Auto-Scroll Toggle Button ---
const autoButton = document.createElement('div');
autoButton.id = 'auto-scroll-btn';
autoButton.innerHTML = '<svg width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><rect x="6" y="3" width="12" height="18" rx="6" ry="6"></rect><line x1="12" y1="7" x2="12" y2="11"></line></svg>';
autoButton.title = 'Toggle auto-scroll';
autoButton.style.cssText = `${commonStyle} bottom: ${config.positions.auto}; background: ${isAutoScrollEnabled ? config.colors.active : config.colors.disabled};`;
autoButton.addEventListener('click', function() {
toggleAutoScroll();
this.style.backgroundColor = isAutoScrollEnabled ? config.colors.active : config.colors.disabled;
});
document.body.appendChild(bottomButton);
document.body.appendChild(topButton);
document.body.appendChild(autoButton);
// Set the initial state of the buttons
updateButtonStates();
}
// --- Auto-Scroll & Initialization ---
function isGenerating() { return !!document.querySelector('button[aria-label="Stop generating response"]'); }
function autoScrollToBottom() {
const sc = document.querySelector(config.selectors.scrollContainer);
if (sc) sc.scrollTo({ top: sc.scrollHeight, behavior: 'smooth' });
}
function toggleAutoScroll() {
isAutoScrollEnabled = !isAutoScrollEnabled;
isAutoScrollEnabled ? startAutoScroll() : stopAutoScroll();
}
function startAutoScroll() {
if (!autoScrollInterval) autoScrollInterval = setInterval(() => { if (isGenerating()) autoScrollToBottom(); }, 300);
}
function stopAutoScroll() {
if (autoScrollInterval) { clearInterval(autoScrollInterval); autoScrollInterval = null; }
}
function initialize() {
addScrollButtons();
if (isAutoScrollEnabled) startAutoScroll();
// Add context-aware scroll listener
const scrollContainer = document.querySelector(config.selectors.scrollContainer);
if (scrollContainer) {
scrollContainer.addEventListener('scroll', throttle(updateButtonStates, config.scrollCheckThrottle));
}
const observer = new MutationObserver(() => {
if (!document.getElementById('auto-scroll-btn')) {
setTimeout(() => {
initialize(); // Re-run the whole setup if buttons disappear
}, 1000);
}
});
observer.observe(document.body, { childList: true, subtree: true });
}
// --- Start ---
if (document.readyState === 'complete') {
initialize();
} else {
window.addEventListener('load', initialize);
}
})();