fix: websocket message scroll (#6503)

* fix: websocket message scroll

* fix

* fix: icon color

* fix: sse message list

* fix

* rm: sort test

* rm: WSResponseSortOrder

* fix: auto scroll

package-lock.json

@@ -24819,6 +24819,15 @@
         "react-dom": ">=16.14.0"
       }
     },
+    "node_modules/react-virtuoso": {
+      "version": "4.17.0",
+      "resolved": "https://registry.npmjs.org/react-virtuoso/-/react-virtuoso-4.17.0.tgz",
+      "integrity": "sha512-od3pi2v13v31uzn5zPXC2u3ouISFCVhjFVFch2VvS2Cx7pWA2F1aJa3XhNTN2F07M3lhfnMnsmGeH+7wZICr7w==",
+      "peerDependencies": {
+        "react": ">=16 || >=17 || >= 18 || >= 19",
+        "react-dom": ">=16 || >=17 || >= 18 || >=19"
+      }
+    },
     "node_modules/read-cache": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/read-cache/-/read-cache-1.0.0.tgz",
@@ -30075,6 +30084,7 @@
         "react-player": "^2.16.0",
         "react-redux": "^7.2.9",
         "react-tooltip": "^5.5.2",
+        "react-virtuoso": "^4.17.0",
         "sass": "^1.46.0",
         "semver": "^7.7.1",
         "shell-quote": "^1.8.3",

packages/bruno-app/package.json

@@ -84,6 +84,7 @@
     "react-player": "^2.16.0",
     "react-redux": "^7.2.9",
     "react-tooltip": "^5.5.2",
+    "react-virtuoso": "^4.17.0",
     "sass": "^1.46.0",
     "semver": "^7.7.1",
     "shell-quote": "^1.8.3",

packages/bruno-app/src/components/ResponsePane/WsResponsePane/StyledWrapper.js

@@ -53,6 +53,17 @@ const StyledWrapper = styled.div`
     align-items: center;
     margin-left: 10px;
   }
+
+  div.tabs .action-icon {
+    color: ${(props) => props.theme.dropdown.iconColor};
+    opacity: 0.8;
+
+    &:hover {
+      color: ${(props) => props.theme.text};
+      opacity: 1;
+      background-color: ${(props) => props.theme.workspace.button.bg};
+    }
+  }
 `;
 
 export default StyledWrapper;

packages/bruno-app/src/components/ResponsePane/WsResponsePane/WSMessagesList/StyledWrapper.js

@@ -1,7 +1,9 @@
 import styled from 'styled-components';
 
 const StyledWrapper = styled.div`
-  overflow-y: auto;
+  flex: 1;
+  min-height: 0; 
+  height: 100%;
 
   .empty-state {
     padding: 1rem;

packages/bruno-app/src/components/ResponsePane/WsResponsePane/WSMessagesList/index.js

@@ -1,13 +1,11 @@
-import React from 'react';
+import React, { useState, useRef, useEffect, useCallback, memo } from 'react';
 import classnames from 'classnames';
 import StyledWrapper from './StyledWrapper';
 import { IconExclamationCircle, IconChevronRight, IconInfoCircle, IconChevronDown, IconArrowUpRight, IconArrowDownLeft } from '@tabler/icons';
 import CodeEditor from 'components/CodeEditor/index';
 import { useTheme } from 'providers/Theme';
-import { useState } from 'react';
 import { useSelector } from 'react-redux';
-import { useRef } from 'react';
-import { useEffect } from 'react';
+import { Virtuoso } from 'react-virtuoso';
 
 const getContentMeta = (content) => {
   if (typeof content === 'object') {
@@ -61,8 +59,7 @@ const TypeIcon = ({ type }) => {
   }[type];
 };
 
-const WSMessageItem = ({ message, inFocus }) => {
-  const [isOpen, setIsOpen] = useState(false);
+const WSMessageItem = memo(({ message, isOpen, onToggle }) => {
   const [showHex, setShowHex] = useState(false);
   const preferences = useSelector((state) => state.app.preferences);
   const { displayedTheme } = useTheme();
@@ -82,21 +79,23 @@ const WSMessageItem = ({ message, inFocus }) => {
     const dateDiff = Date.now() - new Date(message.timestamp).getTime();
     if (dateDiff < 1000 * 10) {
       setIsNew(true);
-      setTimeout(() => {
+      const timer = setTimeout(() => {
         notified.current = true;
         setIsNew(false);
       }, 2500);
+      return () => clearTimeout(timer);
     }
-  }, [message]);
+  }, [message.timestamp]);
 
   const canOpenMessage = !isInfo && !isError;
 
+  const handleToggle = () => {
+    if (!canOpenMessage) return;
+    onToggle?.(message.timestamp);
+  };
+
   return (
     <div
-      ref={(node) => {
-        if (!node) return;
-        if (inFocus) node.scrollIntoView();
-      }}
       className={classnames('ws-message flex flex-col p-2', {
         'ws-incoming': isIncoming,
         'ws-outgoing': isOutgoing,
@@ -111,10 +110,7 @@ const WSMessageItem = ({ message, inFocus }) => {
           'cursor-pointer': canOpenMessage,
           'cursor-not-allowed': !canOpenMessage
         })}
-        onClick={(e) => {
-          if (!canOpenMessage) return;
-          setIsOpen(!isOpen);
-        }}
+        onClick={handleToggle}
       >
         <div className="flex min-w-0 shrink">
           <span className="message-type-icon">
@@ -176,23 +172,87 @@ const WSMessageItem = ({ message, inFocus }) => {
       )}
     </div>
   );
-};
+});
+
+const WSMessagesList = ({ messages = [] }) => {
+  const virtuosoRef = useRef(null);
+  const [scrollerElement, setScrollerElement] = useState(null);
+  const [openMessages, setOpenMessages] = useState(new Set());
+  const userScrolledAwayRef = useRef(false);
+
+  // Toggle message open/closed state by timestamp
+  const handleMessageToggle = useCallback((timestamp) => {
+    setOpenMessages((prev) => {
+      const next = new Set(prev);
+      if (next.has(timestamp)) {
+        next.delete(timestamp);
+      } else {
+        next.add(timestamp);
+      }
+      return next;
+    });
+  }, []);
+
+  useEffect(() => {
+    if (!scrollerElement) return;
+
+    const handleWheel = (e) => {
+      // deltaY < 0 means scrolling up
+      if (e.deltaY < 0) {
+        userScrolledAwayRef.current = true;
+      }
+    };
+
+    scrollerElement.addEventListener('wheel', handleWheel, { passive: true });
+
+    return () => {
+      scrollerElement.removeEventListener('wheel', handleWheel);
+    };
+  }, [scrollerElement]);
+
+  const handleAtBottomStateChange = useCallback((atBottom) => {
+    if (atBottom) {
+      // User scrolled back to bottom, re-enable auto-scroll
+      userScrolledAwayRef.current = false;
+    }
+  }, []);
+
+  const followOutput = useCallback((isAtBottom) => {
+    // Don't auto-scroll if user has scrolled away or has messages open
+    if (userScrolledAwayRef.current || openMessages.size > 0) {
+      return false;
+    }
+    if (isAtBottom) {
+      return 'smooth';
+    }
+    return false;
+  }, [openMessages.size]);
+
+  const renderItem = useCallback((_, msg) => {
+    const isOpen = openMessages.has(msg.timestamp);
+    return <WSMessageItem message={msg} isOpen={isOpen} onToggle={handleMessageToggle} />;
+  }, [openMessages, handleMessageToggle]);
+
+  const computeItemKey = useCallback((_, msg) => {
+    return msg.seq ?? msg.timestamp;
+  }, []);
 
-const WSMessagesList = ({ order = -1, messages = [] }) => {
   if (!messages.length) {
     return <StyledWrapper><div className="empty-state">No messages yet.</div></StyledWrapper>;
   }
 
-  // sort based on order, seq was newly added and might be missing in some cases and when missing,
-  // the timestamp will be used instead
-  const ordered = messages.toSorted((x, y) => ((x.seq ?? x.timestamp) - (y.seq ?? y.timestamp)) * (-order));
-
   return (
     <StyledWrapper className="ws-messages-list flex flex-col">
-      {ordered.map((msg, idx, src) => {
-        const inFocus = order === -1 ? src.length - 1 === idx : idx === 0;
-        return <WSMessageItem key={msg.seq ? msg.seq : msg.timestamp} inFocus={inFocus} id={idx} message={msg} />;
-      })}
+      <Virtuoso
+        ref={virtuosoRef}
+        scrollerRef={setScrollerElement}
+        data={messages}
+        itemContent={renderItem}
+        computeItemKey={computeItemKey}
+        followOutput={followOutput}
+        initialTopMostItemIndex={messages.length - 1}
+        atBottomStateChange={handleAtBottomStateChange}
+      />
     </StyledWrapper>
   );
 };

packages/bruno-app/src/components/ResponsePane/WsResponsePane/index.js

@@ -13,11 +13,10 @@ import StyledWrapper from './StyledWrapper';
 import ResponseLayoutToggle from '../ResponseLayoutToggle';
 import ResponsiveTabs from 'ui/ResponsiveTabs';
 import WSMessagesList from './WSMessagesList';
-import WSResponseSortOrder from './WSResponseSortOrder';
 import WSResponseHeaders from './WSResponseHeaders';
 
 const WSResult = ({ response }) => {
-  return <WSMessagesList order={response?.sortOrder} messages={response.responses || []} />;
+  return <WSMessagesList messages={response.responses || []} />;
 };
 
 const WSResponsePane = ({ item, collection }) => {
@@ -116,7 +115,6 @@ const WSResponsePane = ({ item, collection }) => {
         <>
           <ResponseLayoutToggle />
           <ResponseClear item={item} collection={collection} />
-          <WSResponseSortOrder item={item} collection={collection} />
           <WSStatusCode
             status={response.statusCode}
             text={response.statusText}

packages/bruno-app/src/providers/ReduxStore/slices/collections/index.js

@@ -3154,13 +3154,13 @@ export const collectionsSlice = createSlice({
         const item = findItemInCollection(collection, itemUid);
         if (data.data) {
           item.response.data ||= [];
-          item.response.data = [{
+          item.response.data.push({
             type: 'incoming',
             seq,
             message: data.data,
             messageHexdump: hexdump(data.data),
             timestamp: timestamp || Date.now()
-          }].concat(item.response.data);
+          });
         }
         if (item.response.dataBuffer && item.response.dataBuffer.length && data.dataBuffer) {
           item.response.dataBuffer = Buffer.concat([Buffer.from(item.response.dataBuffer), Buffer.from(data.dataBuffer)]);

tests/websockets/connection.spec.ts

@@ -40,20 +40,6 @@ test.describe.serial('websockets', () => {
     await expect(locators.messages().nth(1).getByText('Closed')).toBeAttached();
   });
 
-  test('websocket messages sorting can be changed', async ({ pageWithUserData: page, restartApp }) => {
-    const locators = buildWebsocketCommonLocators(page);
-
-    await locators.toolbar.latestLast().click();
-
-    await expect(locators.messages().first().getByText('Closed')).toBeAttached();
-    await expect(locators.messages().nth(1).getByText('Connected to ws://')).toBeAttached();
-
-    await locators.toolbar.latestFirst().click();
-
-    await expect(locators.messages().first().getByText('Connected to ws://')).toBeAttached();
-    await expect(locators.messages().nth(1).getByText('Closed')).toBeAttached();
-  });
-
   test('websocket request can send messages', async ({ pageWithUserData: page, restartApp }) => {
     const locators = buildWebsocketCommonLocators(page);