updated some frontend stuff

This commit is contained in:
2025-08-27 01:47:35 +02:00
parent 72101e82db
commit c0e80215cb
3 changed files with 462 additions and 416 deletions

381
src/static/frontend.js Normal file
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@@ -0,0 +1,381 @@
// Mobile keyboard handling
let initialViewportHeight = window.innerHeight;
function adjustForKeyboard() {
const currentHeight = window.visualViewport ? window.visualViewport.height : window.innerHeight;
const diff = initialViewportHeight - currentHeight;
const messagesWrapper = document.getElementById('messagesWrapper');
if (diff > 150) { // Keyboard is likely open
keyboardOpen = true;
if (messagesWrapper) {
messagesWrapper.style.paddingBottom = '140px'; // Even more padding for mobile keyboard
// Reset scroll state and aggressively scroll to bottom
userScrolled = false;
// Multiple scroll attempts with increasing delays
setTimeout(() => {
messagesWrapper.scrollTop = messagesWrapper.scrollHeight + 150;
}, 100);
setTimeout(() => {
messagesWrapper.scrollTop = messagesWrapper.scrollHeight + 150;
}, 250);
setTimeout(() => {
messagesWrapper.scrollTop = messagesWrapper.scrollHeight + 150;
}, 400);
// iOS often needs even more attempts
if (isIOS) {
setTimeout(() => {
messagesWrapper.scrollTop = messagesWrapper.scrollHeight + 200;
}, 600);
setTimeout(() => {
messagesWrapper.scrollTop = messagesWrapper.scrollHeight + 200;
}, 800);
setTimeout(() => {
messagesWrapper.scrollTop = messagesWrapper.scrollHeight + 200;
}, 1000);
}
}
} else {
keyboardOpen = false;
if (messagesWrapper) {
messagesWrapper.style.paddingBottom = '80px';
// Scroll to bottom when keyboard closes too
setTimeout(() => {
if (!userScrolled) {
messagesWrapper.scrollTop = messagesWrapper.scrollHeight + 100;
}
}, 200);
setTimeout(() => {
if (!userScrolled) {
messagesWrapper.scrollTop = messagesWrapper.scrollHeight + 100;
}
}, 400);
}
}
}
// Listen for viewport changes (keyboard open/close)
if (window.visualViewport) {
window.visualViewport.addEventListener('resize', adjustForKeyboard);
} else {
window.addEventListener('resize', adjustForKeyboard);
}
// Mobile-optimized focus handling for textarea
document.addEventListener('DOMContentLoaded', function() {
const messageInput = document.getElementById('messageInput');
if (messageInput) {
messageInput.addEventListener('focus', function() {
// Reset scroll state when focusing input
userScrolled = false;
// Multiple timeout attempts for different mobile browsers
setTimeout(adjustForKeyboard, 200);
setTimeout(adjustForKeyboard, 400);
if (isMobile) {
setTimeout(adjustForKeyboard, 600);
setTimeout(() => {
const messagesWrapper = document.getElementById('messagesWrapper');
if (messagesWrapper) {
messagesWrapper.scrollTop = messagesWrapper.scrollHeight + 200;
}
}, 800);
// Additional scroll attempt for stubborn mobile browsers
setTimeout(() => {
const messagesWrapper = document.getElementById('messagesWrapper');
if (messagesWrapper) {
messagesWrapper.scrollTop = messagesWrapper.scrollHeight + 250;
}
}, 1200);
}
});
messageInput.addEventListener('blur', function() {
setTimeout(adjustForKeyboard, 200);
setTimeout(adjustForKeyboard, 400);
});
// Handle input events for better mobile experience
messageInput.addEventListener('input', function() {
if (isMobile && !userScrolled) {
setTimeout(() => {
scrollToBottom(false);
}, 100);
}
});
}
});
// Mobile-optimized auto-scroll functionality
let isMobile = /Android|webOS|iPhone|iPad|iPod|BlackBerry|IEMobile|Opera Mini/i.test(navigator.userAgent) || window.innerWidth <= 768;
let isIOS = /iPad|iPhone|iPod/.test(navigator.userAgent);
let keyboardOpen = false;
function scrollToBottom(smooth = true) {
const messagesWrapper = document.getElementById('messagesWrapper');
if (messagesWrapper) {
// On mobile, especially iOS, direct scrollTop assignment is more reliable
if (isMobile) {
// Different scroll behavior based on keyboard state
const extraPadding = keyboardOpen ? 200 : 100;
const targetScroll = messagesWrapper.scrollHeight + extraPadding;
messagesWrapper.scrollTop = targetScroll;
// Multiple aggressive scroll attempts for mobile reliability
setTimeout(() => {
messagesWrapper.scrollTop = messagesWrapper.scrollHeight + extraPadding;
}, 50);
setTimeout(() => {
messagesWrapper.scrollTop = messagesWrapper.scrollHeight + extraPadding;
}, 150);
setTimeout(() => {
messagesWrapper.scrollTop = messagesWrapper.scrollHeight + extraPadding;
}, 300);
// Extra attempts when just viewing (no keyboard)
if (!keyboardOpen) {
setTimeout(() => {
messagesWrapper.scrollTop = messagesWrapper.scrollHeight + 150;
}, 500);
setTimeout(() => {
messagesWrapper.scrollTop = messagesWrapper.scrollHeight + 150;
}, 750);
}
// Final iOS-specific attempt
if (isIOS) {
const finalPadding = keyboardOpen ? 250 : 200;
setTimeout(() => {
messagesWrapper.scrollTop = messagesWrapper.scrollHeight + finalPadding;
}, keyboardOpen ? 500 : 1000);
}
} else {
if (smooth) {
messagesWrapper.scrollTo({
top: messagesWrapper.scrollHeight,
behavior: 'smooth'
});
} else {
messagesWrapper.scrollTop = messagesWrapper.scrollHeight;
}
}
}
}
// Function to check if user is near bottom of messages
function isNearBottom() {
const messagesWrapper = document.getElementById('messagesWrapper');
if (!messagesWrapper) return true;
// Larger threshold for mobile to account for touch scrolling momentum
const threshold = isMobile ? 150 : 100;
return messagesWrapper.scrollHeight - messagesWrapper.scrollTop - messagesWrapper.clientHeight < threshold;
}
// Mobile scroll state management
let lastScrollTop = 0;
let userScrolled = false;
let scrollTimeout;
let touchStartY = 0;
let isScrolling = false;
// Detect user scroll with mobile optimizations
document.addEventListener('DOMContentLoaded', function() {
const messagesWrapper = document.getElementById('messagesWrapper');
if (messagesWrapper) {
// Handle touch events for better mobile detection
messagesWrapper.addEventListener('touchstart', function(e) {
touchStartY = e.touches[0].clientY;
isScrolling = false;
clearTimeout(scrollTimeout);
}, { passive: true });
messagesWrapper.addEventListener('touchmove', function(e) {
if (!isScrolling) {
isScrolling = true;
const touchY = e.touches[0].clientY;
const deltaY = touchStartY - touchY;
// If user is swiping up (scrolling up), mark as user scrolled
if (deltaY < -10 && !isNearBottom()) {
userScrolled = true;
}
}
}, { passive: true });
messagesWrapper.addEventListener('touchend', function() {
// Check scroll position after touch ends with delay for momentum scrolling
setTimeout(() => {
if (isNearBottom()) {
userScrolled = false;
}
isScrolling = false;
}, 300);
}, { passive: true });
// Regular scroll event with debouncing for mobile
messagesWrapper.addEventListener('scroll', function() {
clearTimeout(scrollTimeout);
scrollTimeout = setTimeout(() => {
const currentScrollTop = messagesWrapper.scrollTop;
const maxScroll = messagesWrapper.scrollHeight - messagesWrapper.clientHeight;
// More lenient detection for mobile
const upScrollThreshold = isMobile ? 30 : 50;
// If user scrolled up manually, don't auto-scroll for new messages
if (currentScrollTop < lastScrollTop && currentScrollTop < maxScroll - upScrollThreshold) {
userScrolled = true;
}
// If user scrolled to near bottom, resume auto-scrolling
if (isNearBottom()) {
userScrolled = false;
}
lastScrollTop = currentScrollTop;
}, isMobile ? 150 : 50); // Longer debounce for mobile
}, { passive: true });
}
});
// Mobile-optimized message adding function
function addMessageWithAutoScroll(messageElement) {
const messagesContainer = document.getElementById('messagesContainer');
if (messagesContainer && messageElement) {
messagesContainer.appendChild(messageElement);
// Only auto-scroll if user hasn't manually scrolled up
if (!userScrolled) {
const messagesWrapper = document.getElementById('messagesWrapper');
if (messagesWrapper) {
// Immediate first scroll
messagesWrapper.scrollTop = messagesWrapper.scrollHeight + 100;
// Progressive scroll attempts with different padding
setTimeout(() => {
const padding = keyboardOpen ? 200 : 150;
messagesWrapper.scrollTop = messagesWrapper.scrollHeight + padding;
}, 100);
setTimeout(() => {
const padding = keyboardOpen ? 200 : 150;
messagesWrapper.scrollTop = messagesWrapper.scrollHeight + padding;
}, 250);
// Extra attempts when just viewing (no keyboard)
if (!keyboardOpen && isMobile) {
setTimeout(() => {
messagesWrapper.scrollTop = messagesWrapper.scrollHeight + 200;
}, 400);
setTimeout(() => {
messagesWrapper.scrollTop = messagesWrapper.scrollHeight + 250;
}, 600);
// Final attempt for stubborn browsers
setTimeout(() => {
messagesWrapper.scrollTop = messagesWrapper.scrollHeight + 300;
}, 1000);
}
// iOS-specific final attempt
if (isIOS) {
const finalPadding = keyboardOpen ? 250 : 300;
setTimeout(() => {
messagesWrapper.scrollTop = messagesWrapper.scrollHeight + finalPadding;
}, keyboardOpen ? 600 : 1200);
}
}
}
}
}
// Force scroll with mobile optimizations
function forceScrollToBottom() {
userScrolled = false;
const messagesWrapper = document.getElementById('messagesWrapper');
if (messagesWrapper) {
// Immediate aggressive scroll
messagesWrapper.scrollTop = messagesWrapper.scrollHeight + 150;
setTimeout(() => {
messagesWrapper.scrollTop = messagesWrapper.scrollHeight + 150;
}, 100);
setTimeout(() => {
messagesWrapper.scrollTop = messagesWrapper.scrollHeight + 200;
}, 300);
// Extra attempts for iOS
if (isIOS) {
setTimeout(() => {
messagesWrapper.scrollTop = messagesWrapper.scrollHeight + 250;
}, 500);
setTimeout(() => {
messagesWrapper.scrollTop = messagesWrapper.scrollHeight + 250;
}, 700);
}
}
}
// Mobile-optimized mutation observer
document.addEventListener('DOMContentLoaded', function() {
const messagesContainer = document.getElementById('messagesContainer');
if (messagesContainer) {
// Create a MutationObserver to watch for new messages
const observer = new MutationObserver(function(mutations) {
mutations.forEach(function(mutation) {
if (mutation.type === 'childList' && mutation.addedNodes.length > 0) {
// Check if any added nodes are message elements
const hasNewMessage = Array.from(mutation.addedNodes).some(node =>
node.nodeType === Node.ELEMENT_NODE &&
(node.classList.contains('message-group') || node.querySelector('.message-group'))
);
if (hasNewMessage && !userScrolled) {
const messagesWrapper = document.getElementById('messagesWrapper');
if (messagesWrapper) {
// Immediate scroll
messagesWrapper.scrollTop = messagesWrapper.scrollHeight + 100;
setTimeout(() => {
const padding = keyboardOpen ? 200 : 150;
messagesWrapper.scrollTop = messagesWrapper.scrollHeight + padding;
}, 100);
setTimeout(() => {
const padding = keyboardOpen ? 250 : 200;
messagesWrapper.scrollTop = messagesWrapper.scrollHeight + padding;
}, 300);
// Extra scrolling when just viewing (no keyboard)
if (!keyboardOpen && isMobile) {
setTimeout(() => {
messagesWrapper.scrollTop = messagesWrapper.scrollHeight + 250;
}, 500);
setTimeout(() => {
messagesWrapper.scrollTop = messagesWrapper.scrollHeight + 300;
}, 800);
// Final aggressive attempt for viewing mode
setTimeout(() => {
messagesWrapper.scrollTop = messagesWrapper.scrollHeight + 350;
}, 1200);
}
}
}
}
});
});
// Start observing
observer.observe(messagesContainer, {
childList: true,
subtree: true
});
}
});
// Expose functions globally so your existing JavaScript can use them
window.ByteChat = window.ByteChat || {};
window.ByteChat.scrollToBottom = scrollToBottom;
window.ByteChat.forceScrollToBottom = forceScrollToBottom;
window.ByteChat.addMessageWithAutoScroll = addMessageWithAutoScroll;

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@@ -11,7 +11,7 @@
<link rel="icon" type="image/png" href="{{ url_for('static', filename='favicon.png') }}"> <link rel="icon" type="image/png" href="{{ url_for('static', filename='favicon.png') }}">
<script src="https://cdn.jsdelivr.net/npm/socket.io-client@4.7.2/dist/socket.io.min.js"></script> <script src="https://cdn.jsdelivr.net/npm/socket.io-client@4.7.2/dist/socket.io.min.js"></script>
<script src="{{ url_for('static', filename='script.js') }}"></script> <script src="{{ url_for('static', filename='script.js') }}"></script>
<scrpt src="{{ url_for('static', filename='frontend.js') }}"></script>
</head> </head>
<body style="overflow-y: auto;"> <body style="overflow-y: auto;">
<div class="chat-container"> <div class="chat-container">
@@ -68,45 +68,93 @@
</div> </div>
</div> </div>
<div class="feature-list" style="grid-template-columns: repeat(auto-fit, minmax(min(250px, 100%), 1fr)); gap: 1rem; margin-top: 1.5rem; width: 100%;"> <!-- Laptop Image and Desktop App Section -->
<div class="feature-item" style="padding: 1.25rem;"> <div style="margin-top: 2rem; display: flex; flex-direction: column; align-items: center; width: 100%;">
<div class="feature-icon" role="img" aria-label="Security" style="font-size: clamp(1.5rem, 5vw, 2rem);">🔐</div> <img class="laptopimg"
<div class="feature-title" style="font-size: clamp(0.95rem, 3.5vw, 1.1rem);">End-to-End Encryption</div> src="{{ url_for('static', filename='laptop.png')}}"
<div class="feature-desc" style="font-size: clamp(0.8rem, 3vw, 0.9rem);">Messages are encrypted with AES-256 in your browser. The server never sees your messages.</div> alt="ByteChat Desktop Application"
</div> style="width: clamp(200px, 50vw, 400px); height: auto; border-radius: 12px; box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3); transition: transform 0.3s ease, box-shadow 0.3s ease; margin-bottom: 1.5rem; display: block;">
<div class="feature-item" style="padding: 1.25rem;">
<div class="feature-icon" role="img" aria-label="Real-time" style="font-size: clamp(1.5rem, 5vw, 2rem);">🌐</div> <!-- local testing image. uncomment if developing locally
<div class="feature-title" style="font-size: clamp(0.95rem, 3.5vw, 1.1rem);">Real-time Chat</div> <img class="laptopimg"
<div class="feature-desc" style="font-size: clamp(0.8rem, 3vw, 0.9rem);">Instant messaging with WebSocket technology for immediate message delivery.</div> src="../static/laptop.png"
</div> alt="ByteChat Desktop Application"
<div class="feature-item" style="padding: 1.25rem;"> style="width: clamp(200px, 50vw, 400px); height: auto; border-radius: 12px; box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3); transition: transform 0.3s ease, box-shadow 0.3s ease; margin-bottom: 1.5rem; display: block;">
<div class="feature-icon" role="img" aria-label="Anonymous" style="font-size: clamp(1.5rem, 5vw, 2rem);">🎭</div> -->
<div class="feature-title" style="font-size: clamp(0.95rem, 3.5vw, 1.1rem);">Anonymous Users</div>
<div class="feature-desc" style="font-size: clamp(0.8rem, 3vw, 0.9rem);">Each session gets a new random UUID. No registration or personal info required.</div> <!-- Desktop App Section -->
<div style="text-align: center; max-width: 600px; padding: 0 1rem;">
<h2 style="font-size: clamp(1.25rem, 5vw, 1.75rem); margin-bottom: 1rem; color: #00ff88;">Desktop Application</h2>
<p style="font-size: clamp(0.9rem, 3.5vw, 1.1rem); margin-bottom: 1.5rem; line-height: 1.6; color: #b0b0b0;">
For a better experience, consider downloading our desktop application. It offers enhanced performance
trough native Encryption (instead of Browser-Reliant Encryption). Click the button below to download the latest version.
</p>
<!-- Desktop App Download Button -->
<div style="margin-bottom: 1rem;">
<a href="https://rattatwinko.servecounterstrike.com/gitea/rattatwinko/bytechat-desktop/releases"
target="_blank"
rel="noopener noreferrer"
class="btn"
style="display: inline-block; text-decoration: none; font-size: clamp(0.85rem, 3.5vw, 1rem); padding: 0.6rem 1.5rem; min-width: 150px;">
Download Desktop App
</a>
</div>
<!-- Release Notes Placeholder -->
<!--
<div style="margin-top: 2rem; padding: 1rem; border: 1px solid #333; border-radius: 8px; background: rgba(0, 0, 0, 0.2);">
<h3 style="font-size: clamp(1rem, 4vw, 1.25rem); margin-bottom: 0.75rem; color: #ffffff;">Release Information</h3>
<div style="font-size: clamp(0.8rem, 3vw, 0.95rem); color: #888; line-height: 1.5;">
<p>
</p>
</div>
</div>
-->
</div> </div>
</div> </div>
<style>
.laptopimg:hover {
transform: translateY(-5px);
box-shadow: 0 8px 20px rgba(0, 0, 0, 0.4);
}
/* Responsive adjustments for smaller screens */
@media (max-width: 480px) {
.laptopimg {
margin-bottom: 1rem !important;
}
}
/* Ensure images are responsive and maintain aspect ratio */
.laptopimg {
max-width: 100%;
object-fit: contain;
}
</style>
</div> </div>
<!-- Chat Screen --> <!-- Chat Screen -->
<div id="chatScreen" style="display: none;" class="chat-screen"> <div id="chatScreen" style="display: none;" class="chat-screen">
<div class="room-info" id="roomInfo" style="display: none; padding: 0.6rem 0.75rem; flex-wrap: wrap; gap: 0.5rem;"> <div class="room-info" id="roomInfo" style="display: none; padding: 0.6rem 0.75rem; flex-wrap: wrap; gap: 0.5rem;">
<div class="room-details" style="min-width: auto; flex: 1;"> <div class="room-details" style="min-width: auto; flex: 1;">
<span style="font-size: clamp(0.75rem, 3vw, 0.85rem);">Room: <strong id="currentRoomId"></strong></span> <span style="font-size: clamp(0.75rem, 3vw, 0.85rem);">Room: <strong id="currentRoomId"></strong></span>
<span id="messageCounter" style="font-size: clamp(0.75rem, 3vw, 0.85rem);">Messages: 0/256</span> <span id="messageCounter" style="font-size: clamp(0.75rem, 3vw, 0.85rem);">Messages: 0/256</span>
</div>
<div class="room-details" style="min-width: auto; flex: 1;">
<span id="userCounter" style="font-size: clamp(0.75rem, 3vw, 0.85rem);">Users: 0</span>
<span id="encryptionStatus" style="font-size: clamp(0.75rem, 3vw, 0.85rem);">🔐 Encrypted</span>
</div>
</div> </div>
<div class="room-details" style="min-width: auto; flex: 1;">
<span id="userCounter" style="font-size: clamp(0.75rem, 3vw, 0.85rem);">Users: 0</span>
<span id="encryptionStatus" style="font-size: clamp(0.75rem, 3vw, 0.85rem);">🔐 Encrypted</span>
</div>
</div>
<!-- wrapper for scroll --> <!-- wrapper for scroll -->
<div class="messages-wrapper" id="messagesWrapper" style="padding: 0.75rem; padding-bottom: 80px; flex: 1; overflow-y: auto; -webkit-overflow-scrolling: touch; scroll-behavior: smooth;"> <div class="messages-wrapper" id="messagesWrapper" style="padding: 0.75rem; padding-bottom: 80px; flex: 1; overflow-y: auto; -webkit-overflow-scrolling: touch; scroll-behavior: smooth;">
<div class="messages-container" id="messagesContainer" role="log" aria-live="polite" aria-label="Chat messages"> <div class="messages-container" id="messagesContainer" role="log" aria-live="polite" aria-label="Chat messages">
<!-- Messages will be inserted here --> <!-- Messages will be inserted here -->
</div>
</div> </div>
</div> </div>
</div>
<div class="input-section" id="inputSection" style="display: none; padding: 0.6rem 0.75rem; position: fixed; bottom: 0; left: 0; right: 0; z-index: 1000; background: rgba(20, 20, 20, 0.98); backdrop-filter: blur(10px); border-top: 1px solid #333; box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.3);"> <div class="input-section" id="inputSection" style="display: none; padding: 0.6rem 0.75rem; position: fixed; bottom: 0; left: 0; right: 0; z-index: 1000; background: rgba(20, 20, 20, 0.98); backdrop-filter: blur(10px); border-top: 1px solid #333; box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.3);">
<div class="input-container" style="gap: 0.4rem; max-width: 100%;"> <div class="input-container" style="gap: 0.4rem; max-width: 100%;">
@@ -133,392 +181,9 @@
</div> </div>
</div> </div>
<div class="security-indicator" id="securityIndicator" style="display: none; bottom: calc(0.75rem + 80px); right: 15px; padding: 0.4rem 0.8rem; font-size: clamp(0.7rem, 3vw, 0.8rem); z-index: 999;"> <!-- <div class="security-indicator" id="securityIndicator" style="display: none; bottom: calc(0.75rem + 80px); right: 15px; padding: 0.4rem 0.8rem; font-size: clamp(0.7rem, 3vw, 0.8rem); z-index: 999;">
🔒 End-to-End Encrypted 🔒 End-to-End Encrypted
</div> </div>
-->
<script>
// Mobile keyboard handling
let initialViewportHeight = window.innerHeight;
function adjustForKeyboard() {
const currentHeight = window.visualViewport ? window.visualViewport.height : window.innerHeight;
const diff = initialViewportHeight - currentHeight;
const messagesWrapper = document.getElementById('messagesWrapper');
if (diff > 150) { // Keyboard is likely open
keyboardOpen = true;
if (messagesWrapper) {
messagesWrapper.style.paddingBottom = '140px'; // Even more padding for mobile keyboard
// Reset scroll state and aggressively scroll to bottom
userScrolled = false;
// Multiple scroll attempts with increasing delays
setTimeout(() => {
messagesWrapper.scrollTop = messagesWrapper.scrollHeight + 150;
}, 100);
setTimeout(() => {
messagesWrapper.scrollTop = messagesWrapper.scrollHeight + 150;
}, 250);
setTimeout(() => {
messagesWrapper.scrollTop = messagesWrapper.scrollHeight + 150;
}, 400);
// iOS often needs even more attempts
if (isIOS) {
setTimeout(() => {
messagesWrapper.scrollTop = messagesWrapper.scrollHeight + 200;
}, 600);
setTimeout(() => {
messagesWrapper.scrollTop = messagesWrapper.scrollHeight + 200;
}, 800);
setTimeout(() => {
messagesWrapper.scrollTop = messagesWrapper.scrollHeight + 200;
}, 1000);
}
}
} else {
keyboardOpen = false;
if (messagesWrapper) {
messagesWrapper.style.paddingBottom = '80px';
// Scroll to bottom when keyboard closes too
setTimeout(() => {
if (!userScrolled) {
messagesWrapper.scrollTop = messagesWrapper.scrollHeight + 100;
}
}, 200);
setTimeout(() => {
if (!userScrolled) {
messagesWrapper.scrollTop = messagesWrapper.scrollHeight + 100;
}
}, 400);
}
}
}
// Listen for viewport changes (keyboard open/close)
if (window.visualViewport) {
window.visualViewport.addEventListener('resize', adjustForKeyboard);
} else {
window.addEventListener('resize', adjustForKeyboard);
}
// Mobile-optimized focus handling for textarea
document.addEventListener('DOMContentLoaded', function() {
const messageInput = document.getElementById('messageInput');
if (messageInput) {
messageInput.addEventListener('focus', function() {
// Reset scroll state when focusing input
userScrolled = false;
// Multiple timeout attempts for different mobile browsers
setTimeout(adjustForKeyboard, 200);
setTimeout(adjustForKeyboard, 400);
if (isMobile) {
setTimeout(adjustForKeyboard, 600);
setTimeout(() => {
const messagesWrapper = document.getElementById('messagesWrapper');
if (messagesWrapper) {
messagesWrapper.scrollTop = messagesWrapper.scrollHeight + 200;
}
}, 800);
// Additional scroll attempt for stubborn mobile browsers
setTimeout(() => {
const messagesWrapper = document.getElementById('messagesWrapper');
if (messagesWrapper) {
messagesWrapper.scrollTop = messagesWrapper.scrollHeight + 250;
}
}, 1200);
}
});
messageInput.addEventListener('blur', function() {
setTimeout(adjustForKeyboard, 200);
setTimeout(adjustForKeyboard, 400);
});
// Handle input events for better mobile experience
messageInput.addEventListener('input', function() {
if (isMobile && !userScrolled) {
setTimeout(() => {
scrollToBottom(false);
}, 100);
}
});
}
});
// Mobile-optimized auto-scroll functionality
let isMobile = /Android|webOS|iPhone|iPad|iPod|BlackBerry|IEMobile|Opera Mini/i.test(navigator.userAgent) || window.innerWidth <= 768;
let isIOS = /iPad|iPhone|iPod/.test(navigator.userAgent);
let keyboardOpen = false;
function scrollToBottom(smooth = true) {
const messagesWrapper = document.getElementById('messagesWrapper');
if (messagesWrapper) {
// On mobile, especially iOS, direct scrollTop assignment is more reliable
if (isMobile) {
// Different scroll behavior based on keyboard state
const extraPadding = keyboardOpen ? 200 : 100;
const targetScroll = messagesWrapper.scrollHeight + extraPadding;
messagesWrapper.scrollTop = targetScroll;
// Multiple aggressive scroll attempts for mobile reliability
setTimeout(() => {
messagesWrapper.scrollTop = messagesWrapper.scrollHeight + extraPadding;
}, 50);
setTimeout(() => {
messagesWrapper.scrollTop = messagesWrapper.scrollHeight + extraPadding;
}, 150);
setTimeout(() => {
messagesWrapper.scrollTop = messagesWrapper.scrollHeight + extraPadding;
}, 300);
// Extra attempts when just viewing (no keyboard)
if (!keyboardOpen) {
setTimeout(() => {
messagesWrapper.scrollTop = messagesWrapper.scrollHeight + 150;
}, 500);
setTimeout(() => {
messagesWrapper.scrollTop = messagesWrapper.scrollHeight + 150;
}, 750);
}
// Final iOS-specific attempt
if (isIOS) {
const finalPadding = keyboardOpen ? 250 : 200;
setTimeout(() => {
messagesWrapper.scrollTop = messagesWrapper.scrollHeight + finalPadding;
}, keyboardOpen ? 500 : 1000);
}
} else {
if (smooth) {
messagesWrapper.scrollTo({
top: messagesWrapper.scrollHeight,
behavior: 'smooth'
});
} else {
messagesWrapper.scrollTop = messagesWrapper.scrollHeight;
}
}
}
}
// Function to check if user is near bottom of messages
function isNearBottom() {
const messagesWrapper = document.getElementById('messagesWrapper');
if (!messagesWrapper) return true;
// Larger threshold for mobile to account for touch scrolling momentum
const threshold = isMobile ? 150 : 100;
return messagesWrapper.scrollHeight - messagesWrapper.scrollTop - messagesWrapper.clientHeight < threshold;
}
// Mobile scroll state management
let lastScrollTop = 0;
let userScrolled = false;
let scrollTimeout;
let touchStartY = 0;
let isScrolling = false;
// Detect user scroll with mobile optimizations
document.addEventListener('DOMContentLoaded', function() {
const messagesWrapper = document.getElementById('messagesWrapper');
if (messagesWrapper) {
// Handle touch events for better mobile detection
messagesWrapper.addEventListener('touchstart', function(e) {
touchStartY = e.touches[0].clientY;
isScrolling = false;
clearTimeout(scrollTimeout);
}, { passive: true });
messagesWrapper.addEventListener('touchmove', function(e) {
if (!isScrolling) {
isScrolling = true;
const touchY = e.touches[0].clientY;
const deltaY = touchStartY - touchY;
// If user is swiping up (scrolling up), mark as user scrolled
if (deltaY < -10 && !isNearBottom()) {
userScrolled = true;
}
}
}, { passive: true });
messagesWrapper.addEventListener('touchend', function() {
// Check scroll position after touch ends with delay for momentum scrolling
setTimeout(() => {
if (isNearBottom()) {
userScrolled = false;
}
isScrolling = false;
}, 300);
}, { passive: true });
// Regular scroll event with debouncing for mobile
messagesWrapper.addEventListener('scroll', function() {
clearTimeout(scrollTimeout);
scrollTimeout = setTimeout(() => {
const currentScrollTop = messagesWrapper.scrollTop;
const maxScroll = messagesWrapper.scrollHeight - messagesWrapper.clientHeight;
// More lenient detection for mobile
const upScrollThreshold = isMobile ? 30 : 50;
// If user scrolled up manually, don't auto-scroll for new messages
if (currentScrollTop < lastScrollTop && currentScrollTop < maxScroll - upScrollThreshold) {
userScrolled = true;
}
// If user scrolled to near bottom, resume auto-scrolling
if (isNearBottom()) {
userScrolled = false;
}
lastScrollTop = currentScrollTop;
}, isMobile ? 150 : 50); // Longer debounce for mobile
}, { passive: true });
}
});
// Mobile-optimized message adding function
function addMessageWithAutoScroll(messageElement) {
const messagesContainer = document.getElementById('messagesContainer');
if (messagesContainer && messageElement) {
messagesContainer.appendChild(messageElement);
// Only auto-scroll if user hasn't manually scrolled up
if (!userScrolled) {
const messagesWrapper = document.getElementById('messagesWrapper');
if (messagesWrapper) {
// Immediate first scroll
messagesWrapper.scrollTop = messagesWrapper.scrollHeight + 100;
// Progressive scroll attempts with different padding
setTimeout(() => {
const padding = keyboardOpen ? 200 : 150;
messagesWrapper.scrollTop = messagesWrapper.scrollHeight + padding;
}, 100);
setTimeout(() => {
const padding = keyboardOpen ? 200 : 150;
messagesWrapper.scrollTop = messagesWrapper.scrollHeight + padding;
}, 250);
// Extra attempts when just viewing (no keyboard)
if (!keyboardOpen && isMobile) {
setTimeout(() => {
messagesWrapper.scrollTop = messagesWrapper.scrollHeight + 200;
}, 400);
setTimeout(() => {
messagesWrapper.scrollTop = messagesWrapper.scrollHeight + 250;
}, 600);
// Final attempt for stubborn browsers
setTimeout(() => {
messagesWrapper.scrollTop = messagesWrapper.scrollHeight + 300;
}, 1000);
}
// iOS-specific final attempt
if (isIOS) {
const finalPadding = keyboardOpen ? 250 : 300;
setTimeout(() => {
messagesWrapper.scrollTop = messagesWrapper.scrollHeight + finalPadding;
}, keyboardOpen ? 600 : 1200);
}
}
}
}
}
// Force scroll with mobile optimizations
function forceScrollToBottom() {
userScrolled = false;
const messagesWrapper = document.getElementById('messagesWrapper');
if (messagesWrapper) {
// Immediate aggressive scroll
messagesWrapper.scrollTop = messagesWrapper.scrollHeight + 150;
setTimeout(() => {
messagesWrapper.scrollTop = messagesWrapper.scrollHeight + 150;
}, 100);
setTimeout(() => {
messagesWrapper.scrollTop = messagesWrapper.scrollHeight + 200;
}, 300);
// Extra attempts for iOS
if (isIOS) {
setTimeout(() => {
messagesWrapper.scrollTop = messagesWrapper.scrollHeight + 250;
}, 500);
setTimeout(() => {
messagesWrapper.scrollTop = messagesWrapper.scrollHeight + 250;
}, 700);
}
}
}
// Mobile-optimized mutation observer
document.addEventListener('DOMContentLoaded', function() {
const messagesContainer = document.getElementById('messagesContainer');
if (messagesContainer) {
// Create a MutationObserver to watch for new messages
const observer = new MutationObserver(function(mutations) {
mutations.forEach(function(mutation) {
if (mutation.type === 'childList' && mutation.addedNodes.length > 0) {
// Check if any added nodes are message elements
const hasNewMessage = Array.from(mutation.addedNodes).some(node =>
node.nodeType === Node.ELEMENT_NODE &&
(node.classList.contains('message-group') || node.querySelector('.message-group'))
);
if (hasNewMessage && !userScrolled) {
const messagesWrapper = document.getElementById('messagesWrapper');
if (messagesWrapper) {
// Immediate scroll
messagesWrapper.scrollTop = messagesWrapper.scrollHeight + 100;
setTimeout(() => {
const padding = keyboardOpen ? 200 : 150;
messagesWrapper.scrollTop = messagesWrapper.scrollHeight + padding;
}, 100);
setTimeout(() => {
const padding = keyboardOpen ? 250 : 200;
messagesWrapper.scrollTop = messagesWrapper.scrollHeight + padding;
}, 300);
// Extra scrolling when just viewing (no keyboard)
if (!keyboardOpen && isMobile) {
setTimeout(() => {
messagesWrapper.scrollTop = messagesWrapper.scrollHeight + 250;
}, 500);
setTimeout(() => {
messagesWrapper.scrollTop = messagesWrapper.scrollHeight + 300;
}, 800);
// Final aggressive attempt for viewing mode
setTimeout(() => {
messagesWrapper.scrollTop = messagesWrapper.scrollHeight + 350;
}, 1200);
}
}
}
}
});
});
// Start observing
observer.observe(messagesContainer, {
childList: true,
subtree: true
});
}
});
// Expose functions globally so your existing JavaScript can use them
window.ByteChat = window.ByteChat || {};
window.ByteChat.scrollToBottom = scrollToBottom;
window.ByteChat.forceScrollToBottom = forceScrollToBottom;
window.ByteChat.addMessageWithAutoScroll = addMessageWithAutoScroll;
</script>
</body> </body>
</html> </html>