finalized auto scrolling 🏴‍☠️

web/src/hooks/useAutoScroll.stories.tsx

@@ -14,9 +14,10 @@ const AutoScrollDemo = () => {
   const containerRef = useRef<HTMLDivElement>(null);
   const [messages, setMessages] = useState<Message[]>([]);
   const [isAutoAddEnabled, setIsAutoAddEnabled] = useState(false);
+  const [enabled, setEnabled] = useState(false);
   const intervalRef = useRef<NodeJS.Timeout>();
   const { isAutoScrollEnabled, scrollToBottom, scrollToTop, enableAutoScroll, disableAutoScroll } =
-    useAutoScroll(containerRef);
+    useAutoScroll(containerRef, { enabled, observeSubTree: true });
 
   const addMessage = () => {
     const newMessage: Message = {
@@ -80,6 +81,13 @@ const AutoScrollDemo = () => {
           }`}>
           Auto Add {isAutoAddEnabled ? 'ON' : 'OFF'}
         </button>
+        <button
+          onClick={() => setEnabled(!enabled)}
+          className={`rounded px-4 py-2 text-white ${
+            enabled ? 'bg-green-500 hover:bg-green-600' : 'bg-red-500 hover:bg-red-600'
+          }`}>
+          Enabled {enabled ? 'ON' : 'OFF'}
+        </button>
       </div>
 
       <div className="flex flex-wrap items-center gap-4">
@@ -210,7 +218,7 @@ export const ScrollAreaComponentWithAutoScroll: Story = {
       scrollToTop,
       enableAutoScroll,
       disableAutoScroll
-    } = useAutoScroll(containerRef, { observeDeepChanges: true });
+    } = useAutoScroll(containerRef, {});
 
     const addCard = useCallback(() => {
       setCards((prev) => [...prev, generateCard(prev.length + 1)]);
@@ -309,7 +317,7 @@ export const RapidTextAppend: Story = {
     const intervalRef = useRef<NodeJS.Timeout>();
     const { isAutoScrollEnabled, enableAutoScroll, disableAutoScroll } = useAutoScroll(
       containerRef,
-      { observeDeepChanges: true }
+      { observeSubTree: true, observeCharacterData: true, observeAttributes: false }
     );
 
     const addWord = useCallback(() => {

web/src/hooks/useAutoScroll.ts

@@ -20,7 +20,9 @@ interface UseAutoScrollOptions {
    * If true, the hook will observe changes to the container's content and scroll position.
    * If false, the hook will only observe changes to the container's scroll position.
    */
-  observeDeepChanges?: boolean;
+  observeSubTree?: boolean;
+  observeCharacterData?: boolean;
+  observeAttributes?: boolean;
 
   /**
    * Duration in milliseconds to continue animations after a mutation.
@@ -72,7 +74,9 @@ export const useAutoScroll = (
     enabled = true,
     bottomThreshold = 50,
     chaseEasing = 0.2,
-    observeDeepChanges = true,
+    observeSubTree = true,
+    observeCharacterData = false,
+    observeAttributes = false,
     animationCooldown = 500
   } = options;
 
@@ -150,7 +154,8 @@ export const useAutoScroll = (
   // Set up the mutation observer
   useEffect(() => {
     const container = containerRef.current;
-    if (!container || !isAutoScrollEnabled || !enabled) return;
+
+    if (!container || !isAutoScrollEnabled) return;
 
     // Clean up previous observer if it exists
     if (observerRef.current) {
@@ -169,9 +174,9 @@ export const useAutoScroll = (
       // Configure observer to watch for changes
       const observerConfig = {
         childList: true,
-        subtree: observeDeepChanges,
-        characterData: observeDeepChanges,
-        attributes: observeDeepChanges
+        subtree: observeSubTree,
+        characterData: observeCharacterData,
+        attributes: observeAttributes
       };
 
       // Start observing
@@ -201,19 +206,22 @@ export const useAutoScroll = (
     isAutoScrollEnabled,
     containerRef,
     startScrollAnimation,
-    observeDeepChanges,
+    observeSubTree,
+    observeCharacterData,
+    observeAttributes,
     animationCooldown
   ]);
 
   // Listen for user–initiated events. Only disable auto–scroll if the container isn't near the bottom.
   useEffect(() => {
     const container = containerRef.current;
-    if (!container || !isAutoScrollEnabled || !enabled) return;
+    if (!container || !isAutoScrollEnabled) return;
 
     const disableAutoScrollHandler = () => {
       // Only disable auto–scroll if we're not near the bottom.
       if (!isAtBottom(container, bottomThreshold)) {
         setIsAutoScrollEnabled(false);
+        console.log('disableAutoScrollHandler', isAutoScrollEnabled, enabled);
 
         // Stop any ongoing animations
         if (rAFIdRef.current) {
@@ -235,7 +243,7 @@ export const useAutoScroll = (
       container.removeEventListener('touchstart', disableAutoScrollHandler);
       container.removeEventListener('mousedown', disableAutoScrollHandler);
     };
-  }, [containerRef, bottomThreshold, enabled]);
+  }, [containerRef, bottomThreshold, isAutoScrollEnabled]);
 
   // Listen for scroll events. If the user scrolls back close to the bottom, re-enable auto–scroll.
   useEffect(() => {
@@ -252,11 +260,7 @@ export const useAutoScroll = (
     return () => {
       container.removeEventListener('scroll', onScroll);
     };
-  }, [containerRef, bottomThreshold]);
-
-  useEffect(() => {
-    setIsAutoScrollEnabled(enabled);
-  }, [enabled]);
+  }, [containerRef, isAutoScrollEnabled, bottomThreshold]);
 
   // Exposed functions.
 

web/src/layouts/ChatLayout/ChatContainer/ChatContent/ChatContent.tsx

@@ -13,26 +13,20 @@ const autoClass = 'mx-auto max-w-[600px] w-full';
 export const ChatContent: React.FC<{}> = React.memo(() => {
   const chatId = useChatIndividualContextSelector((state) => state.chatId);
   const chatMessageIds = useChatIndividualContextSelector((state) => state.chatMessageIds);
-
   const containerRef = useRef<HTMLElement | null>(null);
-  const [autoMessages, setAutoMessages] = useState<string[]>([]);
-  const { isAutoScrollEnabled, scrollToBottom } = useAutoScroll(containerRef, {
-    observeDeepChanges: true
+
+  const { isAutoScrollEnabled, scrollToBottom, enableAutoScroll } = useAutoScroll(containerRef, {
+    observeSubTree: true,
+    enabled: false
   });
 
   useEffect(() => {
     const container = document.getElementById(CHAT_CONTENT_CONTAINER_ID);
     if (!container) return;
-    console.log('ADD IN A TODO ABOUT IS COMPLETED STREAM');
     containerRef.current = container;
-
-    setInterval(() => {
-      setAutoMessages((prev) => [...prev, 'This is a test ' + prev.length]);
-    }, 22220);
+    enableAutoScroll();
   }, []);
 
-  console.log('isAutoScrollEnabled', isAutoScrollEnabled);
-
   return (
     <>
       <div className="mb-40 flex h-full w-full flex-col overflow-hidden">
@@ -41,14 +35,6 @@ export const ChatContent: React.FC<{}> = React.memo(() => {
             <ChatMessageBlock key={messageId} messageId={messageId} chatId={chatId || ''} />
           </div>
         ))}
-
-        <div className="mx-2 flex flex-wrap gap-1 overflow-hidden">
-          {autoMessages.map((message, index) => (
-            <span key={index} className="w-fit rounded border p-0.5 text-red-700">
-              {message}
-            </span>
-          ))}
-        </div>
       </div>
 
       <ChatInputWrapper>

web/src/layouts/ChatLayout/ChatContainer/ChatContent/ChatScrollToBottom.tsx

@@ -9,18 +9,23 @@ export const ChatScrollToBottom: React.FC<{
   scrollToBottom: ReturnType<typeof useAutoScroll>['scrollToBottom'];
 }> = React.memo(({ isAutoScrollEnabled, scrollToBottom }) => {
   return (
-    <AppTooltip title="Stick to bottom">
-      <button
-        onClick={scrollToBottom}
-        className={cn(
-          'bg-background/90 hover:bg-item-hover/90 absolute -top-9 right-3 z-10 rounded-full border p-2 shadow transition-all duration-300 hover:scale-105 hover:shadow-md',
-          isAutoScrollEnabled
-            ? 'pointer-events-none scale-90 opacity-0'
-            : 'pointer-events-auto scale-100 cursor-pointer opacity-100'
-        )}>
-        <ChevronDown />
-      </button>
-    </AppTooltip>
+    <div
+      className={cn(
+        'absolute -top-9 right-3 z-10',
+        isAutoScrollEnabled
+          ? 'pointer-events-none scale-90 opacity-0'
+          : 'pointer-events-auto scale-100 cursor-pointer opacity-100'
+      )}>
+      <AppTooltip title="Stick to bottom" sideOffset={12} delayDuration={500}>
+        <button
+          onClick={scrollToBottom}
+          className={
+            'bg-background/90 hover:bg-item-hover/90 cursor-pointer rounded-full border p-2 shadow transition-all duration-300 hover:scale-105 hover:shadow-md'
+          }>
+          <ChevronDown />
+        </button>
+      </AppTooltip>
+    </div>
   );
 });