Consolidate event viewer interfaces (#355)

src-web/components/GrpcResponsePane.tsx

@@ -1,9 +1,7 @@
 import type { GrpcEvent, GrpcRequest } from '@yaakapp-internal/models';
-import classNames from 'classnames';
-import { format } from 'date-fns';
 import { useAtomValue, useSetAtom } from 'jotai';
 import type { CSSProperties } from 'react';
-import { useEffect, useMemo, useRef, useState } from 'react';
+import { useEffect, useMemo, useState } from 'react';
 import {
   activeGrpcConnectionAtom,
   activeGrpcConnections,
@@ -12,17 +10,15 @@ import {
 } from '../hooks/usePinnedGrpcConnection';
 import { useStateWithDeps } from '../hooks/useStateWithDeps';
 import { copyToClipboard } from '../lib/copy';
-import { AutoScroller } from './core/AutoScroller';
-import { Banner } from './core/Banner';
 import { Button } from './core/Button';
 import { Editor } from './core/Editor/LazyEditor';
+import { EventViewer } from './core/EventViewer';
+import { EventViewerRow } from './core/EventViewerRow';
 import { HotkeyList } from './core/HotkeyList';
-import { Icon } from './core/Icon';
+import { Icon, type IconProps } from './core/Icon';
 import { IconButton } from './core/IconButton';
 import { KeyValueRow, KeyValueRows } from './core/KeyValueRow';
 import { LoadingIcon } from './core/LoadingIcon';
-import { Separator } from './core/Separator';
-import { SplitLayout } from './core/SplitLayout';
 import { HStack, VStack } from './core/Stacks';
 import { EmptyStateText } from './EmptyStateText';
 import { ErrorBoundary } from './ErrorBoundary';
@@ -42,7 +38,7 @@ interface Props {
 }
 
 export function GrpcResponsePane({ style, methodType, activeRequest }: Props) {
-  const [activeEventId, setActiveEventId] = useState<string | null>(null);
+  const [activeEventIndex, setActiveEventIndex] = useState<number | null>(null);
   const [showLarge, setShowLarge] = useStateWithDeps<boolean>(false, [activeRequest.id]);
   const [showingLarge, setShowingLarge] = useState<boolean>(false);
   const connections = useAtomValue(activeGrpcConnections);
@@ -51,8 +47,8 @@ export function GrpcResponsePane({ style, methodType, activeRequest }: Props) {
   const setPinnedGrpcConnectionId = useSetAtom(pinnedGrpcConnectionIdAtom);
 
   const activeEvent = useMemo(
-    () => events.find((m) => m.id === activeEventId) ?? null,
-    [activeEventId, events],
+    () => (activeEventIndex != null ? events[activeEventIndex] : null),
+    [activeEventIndex, events],
   );
 
   // Set the active message to the first message received if unary
@@ -61,223 +57,198 @@ export function GrpcResponsePane({ style, methodType, activeRequest }: Props) {
     if (events.length === 0 || activeEvent != null || methodType !== 'unary') {
       return;
     }
-    setActiveEventId(events.find((m) => m.eventType === 'server_message')?.id ?? null);
+    const firstServerMessageIndex = events.findIndex((m) => m.eventType === 'server_message');
+    if (firstServerMessageIndex !== -1) {
+      setActiveEventIndex(firstServerMessageIndex);
+    }
   }, [events.length]);
 
+  if (activeConnection == null) {
+    return (
+      <HotkeyList hotkeys={['request.send', 'model.create', 'sidebar.focus', 'url_bar.focus']} />
+    );
+  }
+
+  const header = (
+    <HStack className="pl-3 mb-1 font-mono text-sm text-text-subtle overflow-x-auto hide-scrollbars">
+      <HStack space={2}>
+        <span className="whitespace-nowrap">{events.length} Messages</span>
+        {activeConnection.state !== 'closed' && (
+          <LoadingIcon size="sm" className="text-text-subtlest" />
+        )}
+      </HStack>
+      <div className="ml-auto">
+        <RecentGrpcConnectionsDropdown
+          connections={connections}
+          activeConnection={activeConnection}
+          onPinnedConnectionId={setPinnedGrpcConnectionId}
+        />
+      </div>
+    </HStack>
+  );
+
   return (
-    <SplitLayout
-      layout="vertical"
-      style={style}
-      name="grpc_events"
-      defaultRatio={0.4}
-      minHeightPx={20}
-      firstSlot={() =>
-        activeConnection == null ? (
-          <HotkeyList
-            hotkeys={['request.send', 'model.create', 'sidebar.focus', 'url_bar.focus']}
-          />
-        ) : (
-          <div className="w-full grid grid-rows-[auto_minmax(0,1fr)] grid-cols-1 items-center">
-            <HStack className="pl-3 mb-1 font-mono text-sm text-text-subtle overflow-x-auto hide-scrollbars">
-              <HStack space={2}>
-                <span className="whitespace-nowrap">{events.length} Messages</span>
-                {activeConnection.state !== 'closed' && (
-                  <LoadingIcon size="sm" className="text-text-subtlest" />
-                )}
-              </HStack>
-              <div className="ml-auto">
-                <RecentGrpcConnectionsDropdown
-                  connections={connections}
-                  activeConnection={activeConnection}
-                  onPinnedConnectionId={setPinnedGrpcConnectionId}
-                />
-              </div>
-            </HStack>
-            <ErrorBoundary name="GRPC Events">
-              <AutoScroller
-                data={events}
-                header={
-                  activeConnection.error && (
-                    <Banner color="danger" className="m-3">
-                      {activeConnection.error}
-                    </Banner>
-                  )
-                }
-                render={(event) => (
-                  <EventRow
-                    key={event.id}
-                    event={event}
-                    isActive={event.id === activeEventId}
-                    onClick={() => {
-                      if (event.id === activeEventId) setActiveEventId(null);
-                      else setActiveEventId(event.id);
-                    }}
-                  />
-                )}
-              />
-            </ErrorBoundary>
-          </div>
-        )
-      }
-      secondSlot={
-        activeEvent != null && activeConnection != null
-          ? () => (
-              <div className="grid grid-rows-[auto_minmax(0,1fr)]">
-                <div className="pb-3 px-2">
-                  <Separator />
-                </div>
-                <div className="h-full pl-2 overflow-y-auto grid grid-rows-[auto_minmax(0,1fr)] ">
-                  {activeEvent.eventType === 'client_message' ||
-                  activeEvent.eventType === 'server_message' ? (
-                    <>
-                      <div className="mb-2 select-text cursor-text grid grid-cols-[minmax(0,1fr)_auto] items-center">
-                        <div className="font-semibold">
-                          Message {activeEvent.eventType === 'client_message' ? 'Sent' : 'Received'}
-                        </div>
-                        <IconButton
-                          title="Copy message"
-                          icon="copy"
-                          size="xs"
-                          onClick={() => copyToClipboard(activeEvent.content)}
-                        />
-                      </div>
-                      {!showLarge && activeEvent.content.length > 1000 * 1000 ? (
-                        <VStack space={2} className="italic text-text-subtlest">
-                          Message previews larger than 1MB are hidden
-                          <div>
-                            <Button
-                              onClick={() => {
-                                setShowingLarge(true);
-                                setTimeout(() => {
-                                  setShowLarge(true);
-                                  setShowingLarge(false);
-                                }, 500);
-                              }}
-                              isLoading={showingLarge}
-                              color="secondary"
-                              variant="border"
-                              size="xs"
-                            >
-                              Try Showing
-                            </Button>
-                          </div>
-                        </VStack>
-                      ) : (
-                        <Editor
-                          language="json"
-                          defaultValue={activeEvent.content ?? ''}
-                          wrapLines={false}
-                          readOnly={true}
-                          stateKey={null}
-                        />
-                      )}
-                    </>
-                  ) : (
-                    <div className="h-full grid grid-rows-[auto_minmax(0,1fr)]">
-                      <div>
-                        <div className="select-text cursor-text font-semibold">
-                          {activeEvent.content}
-                        </div>
-                        {activeEvent.error && (
-                          <div className="select-text cursor-text text-sm font-mono py-1 text-warning">
-                            {activeEvent.error}
-                          </div>
-                        )}
-                      </div>
-                      <div className="py-2 h-full">
-                        {Object.keys(activeEvent.metadata).length === 0 ? (
-                          <EmptyStateText>
-                            No{' '}
-                            {activeEvent.eventType === 'connection_end' ? 'trailers' : 'metadata'}
-                          </EmptyStateText>
-                        ) : (
-                          <KeyValueRows>
-                            {Object.entries(activeEvent.metadata).map(([key, value]) => (
-                              <KeyValueRow key={key} label={key}>
-                                {value}
-                              </KeyValueRow>
-                            ))}
-                          </KeyValueRows>
-                        )}
-                      </div>
-                    </div>
-                  )}
-                </div>
-              </div>
-            )
-          : null
+    <div style={style} className="h-full">
+      <ErrorBoundary name="GRPC Events">
+        <EventViewer
+          events={events}
+          getEventKey={(event) => event.id}
+          error={activeConnection.error}
+          header={header}
+          splitLayoutName="grpc_events"
+          defaultRatio={0.4}
+          renderRow={({ event, isActive, onClick }) => (
+            <GrpcEventRow event={event} isActive={isActive} onClick={onClick} />
+          )}
+          renderDetail={({ event }) => (
+            <GrpcEventDetail
+              event={event}
+              showLarge={showLarge}
+              showingLarge={showingLarge}
+              setShowLarge={setShowLarge}
+              setShowingLarge={setShowingLarge}
+            />
+          )}
+        />
+      </ErrorBoundary>
+    </div>
+  );
+}
+
+function GrpcEventRow({
+  event,
+  isActive,
+  onClick,
+}: {
+  event: GrpcEvent;
+  isActive: boolean;
+  onClick: () => void;
+}) {
+  const { eventType, status, content, error } = event;
+  const display = getEventDisplay(eventType, status);
+
+  return (
+    <EventViewerRow
+      isActive={isActive}
+      onClick={onClick}
+      icon={<Icon color={display.color} title={display.title} icon={display.icon} />}
+      content={
+        <span className="text-xs">
+          {content.slice(0, 1000)}
+          {error && <span className="text-warning"> ({error})</span>}
+        </span>
       }
+      timestamp={event.createdAt}
     />
   );
 }
 
-function EventRow({
-  onClick,
-  isActive,
+function GrpcEventDetail({
   event,
+  showLarge,
+  showingLarge,
+  setShowLarge,
+  setShowingLarge,
 }: {
-  onClick?: () => void;
-  isActive?: boolean;
   event: GrpcEvent;
+  showLarge: boolean;
+  showingLarge: boolean;
+  setShowLarge: (v: boolean) => void;
+  setShowingLarge: (v: boolean) => void;
 }) {
-  const { eventType, status, createdAt, content, error } = event;
-  const ref = useRef<HTMLDivElement>(null);
-
-  return (
-    <div className="px-1" ref={ref}>
-      <button
-        type="button"
-        onClick={onClick}
-        className={classNames(
-          'w-full grid grid-cols-[auto_minmax(0,3fr)_auto] gap-2 items-center text-left',
-          'px-1.5 h-xs font-mono cursor-default group focus:outline-none focus:text-text rounded',
-          isActive && '!bg-surface-active !text-text',
-          'text-text-subtle hover:text',
+  if (event.eventType === 'client_message' || event.eventType === 'server_message') {
+    return (
+      <div className="h-full grid grid-rows-[auto_minmax(0,1fr)]">
+        <div className="mb-2 select-text cursor-text grid grid-cols-[minmax(0,1fr)_auto] items-center">
+          <div className="font-semibold">
+            Message {event.eventType === 'client_message' ? 'Sent' : 'Received'}
+          </div>
+          <IconButton
+            title="Copy message"
+            icon="copy"
+            size="xs"
+            onClick={() => copyToClipboard(event.content)}
+          />
+        </div>
+        {!showLarge && event.content.length > 1000 * 1000 ? (
+          <VStack space={2} className="italic text-text-subtlest">
+            Message previews larger than 1MB are hidden
+            <div>
+              <Button
+                onClick={() => {
+                  setShowingLarge(true);
+                  setTimeout(() => {
+                    setShowLarge(true);
+                    setShowingLarge(false);
+                  }, 500);
+                }}
+                isLoading={showingLarge}
+                color="secondary"
+                variant="border"
+                size="xs"
+              >
+                Try Showing
+              </Button>
+            </div>
+          </VStack>
+        ) : (
+          <Editor
+            language="json"
+            defaultValue={event.content ?? ''}
+            wrapLines={false}
+            readOnly={true}
+            stateKey={null}
+          />
         )}
-      >
-        <Icon
-          color={
-            eventType === 'server_message'
-              ? 'info'
-              : eventType === 'client_message'
-                ? 'primary'
-                : eventType === 'error' || (status != null && status > 0)
-                  ? 'danger'
-                  : eventType === 'connection_end'
-                    ? 'success'
-                    : undefined
-          }
-          title={
-            eventType === 'server_message'
-              ? 'Server message'
-              : eventType === 'client_message'
-                ? 'Client message'
-                : eventType === 'error' || (status != null && status > 0)
-                  ? 'Error'
-                  : eventType === 'connection_end'
-                    ? 'Connection response'
-                    : undefined
-          }
-          icon={
-            eventType === 'server_message'
-              ? 'arrow_big_down_dash'
-              : eventType === 'client_message'
-                ? 'arrow_big_up_dash'
-                : eventType === 'error' || (status != null && status > 0)
-                  ? 'alert_triangle'
-                  : eventType === 'connection_end'
-                    ? 'check'
-                    : 'info'
-          }
-        />
-        <div className={classNames('w-full truncate text-xs')}>
-          {content.slice(0, 1000)}
-          {error && <span className="text-warning"> ({error})</span>}
-        </div>
-        <div className={classNames('opacity-50 text-xs')}>
-          {format(`${createdAt}Z`, 'HH:mm:ss.SSS')}
-        </div>
-      </button>
+      </div>
+    );
+  }
+
+  // Error or connection_end - show metadata/trailers
+  return (
+    <div className="h-full grid grid-rows-[auto_minmax(0,1fr)]">
+      <div>
+        <div className="select-text cursor-text font-semibold">{event.content}</div>
+        {event.error && (
+          <div className="select-text cursor-text text-sm font-mono py-1 text-warning">
+            {event.error}
+          </div>
+        )}
+      </div>
+      <div className="py-2 h-full">
+        {Object.keys(event.metadata).length === 0 ? (
+          <EmptyStateText>
+            No {event.eventType === 'connection_end' ? 'trailers' : 'metadata'}
+          </EmptyStateText>
+        ) : (
+          <KeyValueRows>
+            {Object.entries(event.metadata).map(([key, value]) => (
+              <KeyValueRow key={key} label={key}>
+                {value}
+              </KeyValueRow>
+            ))}
+          </KeyValueRows>
+        )}
+      </div>
     </div>
   );
 }
+
+function getEventDisplay(
+  eventType: GrpcEvent['eventType'],
+  status: GrpcEvent['status'],
+): { icon: IconProps['icon']; color: IconProps['color']; title: string } {
+  if (eventType === 'server_message') {
+    return { icon: 'arrow_big_down_dash', color: 'info', title: 'Server message' };
+  }
+  if (eventType === 'client_message') {
+    return { icon: 'arrow_big_up_dash', color: 'primary', title: 'Client message' };
+  }
+  if (eventType === 'error' || (status != null && status > 0)) {
+    return { icon: 'alert_triangle', color: 'danger', title: 'Error' };
+  }
+  if (eventType === 'connection_end') {
+    return { icon: 'check', color: 'success', title: 'Connection response' };
+  }
+  return { icon: 'info', color: undefined, title: 'Event' };
+}

src-web/components/HttpResponseTimeline.tsx

@@ -3,18 +3,18 @@ import type {
   HttpResponseEvent,
   HttpResponseEventData,
 } from '@yaakapp-internal/models';
-import classNames from 'classnames';
 import { format } from 'date-fns';
-import { type ReactNode, useMemo, useState } from 'react';
+import { type ReactNode, useState } from 'react';
 import { useHttpResponseEvents } from '../hooks/useHttpResponseEvents';
-import { AutoScroller } from './core/AutoScroller';
-import { Banner } from './core/Banner';
+import { Button } from './core/Button';
+import { Editor } from './core/Editor/LazyEditor';
+import { EventViewer } from './core/EventViewer';
+import { EventViewerRow } from './core/EventViewerRow';
 import { HttpMethodTagRaw } from './core/HttpMethodTag';
 import { HttpStatusTagRaw } from './core/HttpStatusTag';
 import { Icon, type IconProps } from './core/Icon';
 import { KeyValueRow, KeyValueRows } from './core/KeyValueRow';
-import { Separator } from './core/Separator';
-import { SplitLayout } from './core/SplitLayout';
+import { HStack } from './core/Stacks';
 
 interface Props {
   response: HttpResponse;
@@ -25,113 +25,73 @@ export function HttpResponseTimeline({ response }: Props) {
 }
 
 function Inner({ response }: Props) {
-  const [activeEventIndex, setActiveEventIndex] = useState<number | null>(null);
+  const [showRaw, setShowRaw] = useState(false);
   const { data: events, error, isLoading } = useHttpResponseEvents(response);
 
-  const activeEvent = useMemo(
-    () => (activeEventIndex == null ? null : events?.[activeEventIndex]),
-    [activeEventIndex, events],
-  );
-
-  if (isLoading) {
-    return <div className="p-3 text-text-subtlest italic">Loading events...</div>;
-  }
-
-  if (error) {
-    return (
-      <Banner color="danger" className="m-3">
-        {String(error)}
-      </Banner>
-    );
-  }
-
-  if (!events || events.length === 0) {
-    return <div className="p-3 text-text-subtlest italic">No events recorded</div>;
-  }
-
   return (
-    <SplitLayout
-      layout="vertical"
-      name="http_response_events"
+    <EventViewer
+      events={events ?? []}
+      getEventKey={(event) => event.id}
+      error={error ? String(error) : null}
+      isLoading={isLoading}
+      loadingMessage="Loading events..."
+      emptyMessage="No events recorded"
+      splitLayoutName="http_response_events"
       defaultRatio={0.25}
-      minHeightPx={10}
-      firstSlot={() => (
-        <AutoScroller
-          data={events}
-          render={(event, i) => (
-            <EventRow
-              key={event.id}
-              event={event}
-              isActive={i === activeEventIndex}
-              onClick={() => {
-                if (i === activeEventIndex) setActiveEventIndex(null);
-                else setActiveEventIndex(i);
-              }}
-            />
-          )}
-        />
+      renderRow={({ event, isActive, onClick }) => {
+        const display = getEventDisplay(event.event);
+        return (
+          <EventViewerRow
+            isActive={isActive}
+            onClick={onClick}
+            icon={<Icon color={display.color} icon={display.icon} size="sm" />}
+            content={display.summary}
+            timestamp={event.createdAt}
+          />
+        );
+      }}
+      renderDetail={({ event }) => (
+        <EventDetails event={event} showRaw={showRaw} setShowRaw={setShowRaw} />
       )}
-      secondSlot={
-        activeEvent
-          ? () => (
-              <div className="grid grid-rows-[auto_minmax(0,1fr)]">
-                <div className="pb-3 px-2">
-                  <Separator />
-                </div>
-                <div className="mx-2 overflow-y-auto">
-                  <EventDetails event={activeEvent} />
-                </div>
-              </div>
-            )
-          : null
-      }
     />
   );
 }
 
-function EventRow({
-  onClick,
-  isActive,
-  event,
-}: {
-  onClick: () => void;
-  isActive: boolean;
-  event: HttpResponseEvent;
-}) {
-  const display = getEventDisplay(event.event);
-  const { icon, color, summary } = display;
-
-  return (
-    <div className="px-1">
-      <button
-        type="button"
-        onClick={onClick}
-        className={classNames(
-          'w-full grid grid-cols-[auto_minmax(0,1fr)_auto] gap-2 items-center text-left',
-          'px-1.5 h-xs font-mono text-editor cursor-default group focus:outline-none focus:text-text rounded',
-          isActive && '!bg-surface-active !text-text',
-          'text-text-subtle hover:text',
-        )}
-      >
-        <Icon color={color} icon={icon} size="sm" />
-        <div className="w-full truncate">{summary}</div>
-        <div className="opacity-50">{format(`${event.createdAt}Z`, 'HH:mm:ss.SSS')}</div>
-      </button>
-    </div>
-  );
-}
-
 function formatBytes(bytes: number): string {
   if (bytes < 1024) return `${bytes} B`;
   if (bytes < 1024 * 1024) return `${(bytes / 1024).toFixed(1)} KB`;
   return `${(bytes / (1024 * 1024)).toFixed(1)} MB`;
 }
 
-function EventDetails({ event }: { event: HttpResponseEvent }) {
+function EventDetails({
+  event,
+  showRaw,
+  setShowRaw,
+}: {
+  event: HttpResponseEvent;
+  showRaw: boolean;
+  setShowRaw: (v: boolean) => void;
+}) {
   const { label } = getEventDisplay(event.event);
   const timestamp = format(new Date(`${event.createdAt}Z`), 'HH:mm:ss.SSS');
   const e = event.event;
 
+  // Raw view - show plaintext representation
+  if (showRaw) {
+    const rawText = formatEventRaw(event.event);
+    return (
+      <div className="flex flex-col gap-2 h-full">
+        <DetailHeader
+          title={label}
+          timestamp={timestamp}
+          showRaw={showRaw}
+          setShowRaw={setShowRaw}
+        />
+        <Editor language="text" defaultValue={rawText} readOnly stateKey={null} />
+      </div>
+    );
+  }
+
   // Headers - show name and value with Editor for JSON
   if (e.type === 'header_up' || e.type === 'header_down') {
     return (
@@ -139,6 +99,8 @@ function EventDetails({ event }: { event: HttpResponseEvent }) {
         <DetailHeader
           title={e.type === 'header_down' ? 'Header Received' : 'Header Sent'}
           timestamp={timestamp}
+          showRaw={showRaw}
+          setShowRaw={setShowRaw}
         />
         <KeyValueRows>
           <KeyValueRow label="Header">{e.name}</KeyValueRow>
@@ -152,7 +114,12 @@ function EventDetails({ event }: { event: HttpResponseEvent }) {
   if (e.type === 'send_url') {
     return (
       <div className="flex flex-col gap-2">
-        <DetailHeader title="Request" timestamp={timestamp} />
+        <DetailHeader
+          title="Request"
+          timestamp={timestamp}
+          showRaw={showRaw}
+          setShowRaw={setShowRaw}
+        />
         <KeyValueRows>
           <KeyValueRow label="Method">
             <HttpMethodTagRaw forceColor method={e.method} />
@@ -167,7 +134,12 @@ function EventDetails({ event }: { event: HttpResponseEvent }) {
   if (e.type === 'receive_url') {
     return (
       <div className="flex flex-col gap-2">
-        <DetailHeader title="Response" timestamp={timestamp} />
+        <DetailHeader
+          title="Response"
+          timestamp={timestamp}
+          showRaw={showRaw}
+          setShowRaw={setShowRaw}
+        />
         <KeyValueRows>
           <KeyValueRow label="HTTP Version">{e.version}</KeyValueRow>
           <KeyValueRow label="Status">
@@ -182,7 +154,12 @@ function EventDetails({ event }: { event: HttpResponseEvent }) {
   if (e.type === 'redirect') {
     return (
       <div className="flex flex-col gap-2">
-        <DetailHeader title="Redirect" timestamp={timestamp} />
+        <DetailHeader
+          title="Redirect"
+          timestamp={timestamp}
+          showRaw={showRaw}
+          setShowRaw={setShowRaw}
+        />
         <KeyValueRows>
           <KeyValueRow label="Status">
             <HttpStatusTagRaw status={e.status} />
@@ -200,7 +177,12 @@ function EventDetails({ event }: { event: HttpResponseEvent }) {
   if (e.type === 'setting') {
     return (
       <div className="flex flex-col gap-2">
-        <DetailHeader title="Apply Setting" timestamp={timestamp} />
+        <DetailHeader
+          title="Apply Setting"
+          timestamp={timestamp}
+          showRaw={showRaw}
+          setShowRaw={setShowRaw}
+        />
         <KeyValueRows>
           <KeyValueRow label="Setting">{e.name}</KeyValueRow>
           <KeyValueRow label="Value">{e.value}</KeyValueRow>
@@ -214,7 +196,12 @@ function EventDetails({ event }: { event: HttpResponseEvent }) {
     const direction = e.type === 'chunk_sent' ? 'Sent' : 'Received';
     return (
       <div className="flex flex-col gap-2">
-        <DetailHeader title={`Data ${direction}`} timestamp={timestamp} />
+        <DetailHeader
+          title={`Data ${direction}`}
+          timestamp={timestamp}
+          showRaw={showRaw}
+          setShowRaw={setShowRaw}
+        />
         <div className="font-mono text-editor">{formatBytes(e.bytes)}</div>
       </div>
     );
@@ -224,21 +211,62 @@ function EventDetails({ event }: { event: HttpResponseEvent }) {
   const { summary } = getEventDisplay(event.event);
   return (
     <div className="flex flex-col gap-1">
-      <DetailHeader title={label} timestamp={timestamp} />
+      <DetailHeader title={label} timestamp={timestamp} showRaw={showRaw} setShowRaw={setShowRaw} />
       <div className="font-mono text-editor">{summary}</div>
     </div>
   );
 }
 
-function DetailHeader({ title, timestamp }: { title: string; timestamp: string }) {
+function DetailHeader({
+  title,
+  timestamp,
+  showRaw,
+  setShowRaw,
+}: {
+  title: string;
+  timestamp: string;
+  showRaw: boolean;
+  setShowRaw: (v: boolean) => void;
+}) {
   return (
     <div className="flex items-center justify-between gap-2">
-      <h3 className="font-semibold select-auto cursor-auto">{title}</h3>
+      <HStack space={2} className="items-center">
+        <h3 className="font-semibold select-auto cursor-auto">{title}</h3>
+        <Button variant="border" size="xs" onClick={() => setShowRaw(!showRaw)}>
+          {showRaw ? 'Formatted' : 'Raw'}
+        </Button>
+      </HStack>
       <span className="text-text-subtlest font-mono text-editor">{timestamp}</span>
     </div>
   );
 }
 
+/** Format event as raw plaintext for debugging */
+function formatEventRaw(event: HttpResponseEventData): string {
+  switch (event.type) {
+    case 'send_url':
+      return `> ${event.method} ${event.path}`;
+    case 'receive_url':
+      return `< ${event.version} ${event.status}`;
+    case 'header_up':
+      return `> ${event.name}: ${event.value}`;
+    case 'header_down':
+      return `< ${event.name}: ${event.value}`;
+    case 'redirect':
+      return `< ${event.status} Redirect: ${event.url}`;
+    case 'setting':
+      return `[setting] ${event.name} = ${event.value}`;
+    case 'info':
+      return `[info] ${event.message}`;
+    case 'chunk_sent':
+      return `> [${formatBytes(event.bytes)} sent]`;
+    case 'chunk_received':
+      return `< [${formatBytes(event.bytes)} received]`;
+    default:
+      return '[unknown event]';
+  }
+}
+
 type EventDisplay = {
   icon: IconProps['icon'];
   color: IconProps['color'];

src-web/components/WebsocketResponsePane.tsx

@@ -1,9 +1,7 @@
 import type { WebsocketEvent, WebsocketRequest } from '@yaakapp-internal/models';
-import classNames from 'classnames';
-import { format } from 'date-fns';
 import { hexy } from 'hexy';
 import { useAtomValue } from 'jotai';
-import { useMemo, useRef, useState } from 'react';
+import { useMemo, useState } from 'react';
 import { useFormatText } from '../hooks/useFormatText';
 import {
   activeWebsocketConnectionAtom,
@@ -14,16 +12,14 @@ import {
 import { useStateWithDeps } from '../hooks/useStateWithDeps';
 import { languageFromContentType } from '../lib/contentType';
 import { copyToClipboard } from '../lib/copy';
-import { AutoScroller } from './core/AutoScroller';
-import { Banner } from './core/Banner';
 import { Button } from './core/Button';
 import { Editor } from './core/Editor/LazyEditor';
+import { EventViewer } from './core/EventViewer';
+import { EventViewerRow } from './core/EventViewerRow';
 import { HotkeyList } from './core/HotkeyList';
 import { Icon } from './core/Icon';
 import { IconButton } from './core/IconButton';
 import { LoadingIcon } from './core/LoadingIcon';
-import { Separator } from './core/Separator';
-import { SplitLayout } from './core/SplitLayout';
 import { HStack, VStack } from './core/Stacks';
 import { WebsocketStatusTag } from './core/WebsocketStatusTag';
 import { EmptyStateText } from './EmptyStateText';
@@ -35,227 +31,198 @@ interface Props {
 }
 
 export function WebsocketResponsePane({ activeRequest }: Props) {
-  const [activeEventId, setActiveEventId] = useState<string | null>(null);
   const [showLarge, setShowLarge] = useStateWithDeps<boolean>(false, [activeRequest.id]);
   const [showingLarge, setShowingLarge] = useState<boolean>(false);
-  const [hexDumps, setHexDumps] = useState<Record<string, boolean>>({});
+  const [hexDumps, setHexDumps] = useState<Record<number, boolean>>({});
 
   const activeConnection = useAtomValue(activeWebsocketConnectionAtom);
   const connections = useAtomValue(activeWebsocketConnectionsAtom);
   const events = useWebsocketEvents(activeConnection?.id ?? null);
 
-  const activeEvent = useMemo(
-    () => events.find((m) => m.id === activeEventId) ?? null,
-    [activeEventId, events],
+  if (activeConnection == null) {
+    return (
+      <HotkeyList hotkeys={['request.send', 'model.create', 'sidebar.focus', 'url_bar.focus']} />
+    );
+  }
+
+  const header = (
+    <HStack className="pl-3 mb-1 font-mono text-sm text-text-subtle">
+      <HStack space={2}>
+        {activeConnection.state !== 'closed' && (
+          <LoadingIcon size="sm" className="text-text-subtlest" />
+        )}
+        <WebsocketStatusTag connection={activeConnection} />
+        <span>&bull;</span>
+        <span>{events.length} Messages</span>
+      </HStack>
+      <HStack space={0.5} className="ml-auto">
+        <RecentWebsocketConnectionsDropdown
+          connections={connections}
+          activeConnection={activeConnection}
+          onPinnedConnectionId={setPinnedWebsocketConnectionId}
+        />
+      </HStack>
+    </HStack>
   );
 
-  const hexDump = hexDumps[activeEventId ?? 'n/a'] ?? activeEvent?.messageType === 'binary';
-
-  const message = useMemo(() => {
-    if (hexDump) {
-      return activeEvent?.message ? hexy(activeEvent?.message) : '';
-    }
-    return activeEvent?.message
-      ? new TextDecoder('utf-8').decode(Uint8Array.from(activeEvent.message))
-      : '';
-  }, [activeEvent?.message, hexDump]);
-
-  const language = languageFromContentType(null, message);
-  const formattedMessage = useFormatText({ language, text: message, pretty: true });
-
   return (
-    <SplitLayout
-      layout="vertical"
-      name="grpc_events"
-      defaultRatio={0.4}
-      minHeightPx={20}
-      firstSlot={() =>
-        activeConnection == null ? (
-          <HotkeyList
-            hotkeys={['request.send', 'model.create', 'sidebar.focus', 'url_bar.focus']}
+    <ErrorBoundary name="Websocket Events">
+      <EventViewer
+        events={events}
+        getEventKey={(event) => event.id}
+        error={activeConnection.error}
+        header={header}
+        splitLayoutName="websocket_events"
+        defaultRatio={0.4}
+        renderRow={({ event, isActive, onClick }) => (
+          <WebsocketEventRow event={event} isActive={isActive} onClick={onClick} />
+        )}
+        renderDetail={({ event, index }) => (
+          <WebsocketEventDetail
+            event={event}
+            hexDump={hexDumps[index] ?? event.messageType === 'binary'}
+            setHexDump={(v) => setHexDumps({ ...hexDumps, [index]: v })}
+            showLarge={showLarge}
+            showingLarge={showingLarge}
+            setShowLarge={setShowLarge}
+            setShowingLarge={setShowingLarge}
           />
-        ) : (
-          <div className="w-full grid grid-rows-[auto_minmax(0,1fr)] items-center">
-            <HStack className="pl-3 mb-1 font-mono text-sm text-text-subtle">
-              <HStack space={2}>
-                {activeConnection.state !== 'closed' && (
-                  <LoadingIcon size="sm" className="text-text-subtlest" />
-                )}
-                <WebsocketStatusTag connection={activeConnection} />
-                <span>&bull;</span>
-                <span>{events.length} Messages</span>
-              </HStack>
-              <HStack space={0.5} className="ml-auto">
-                <RecentWebsocketConnectionsDropdown
-                  connections={connections}
-                  activeConnection={activeConnection}
-                  onPinnedConnectionId={setPinnedWebsocketConnectionId}
-                />
-              </HStack>
-            </HStack>
-            <ErrorBoundary name="Websocket Events">
-              <AutoScroller
-                data={events}
-                header={
-                  activeConnection.error && (
-                    <Banner color="danger" className="m-3">
-                      {activeConnection.error}
-                    </Banner>
-                  )
-                }
-                render={(event) => (
-                  <EventRow
-                    key={event.id}
-                    event={event}
-                    isActive={event.id === activeEventId}
-                    onClick={() => {
-                      if (event.id === activeEventId) setActiveEventId(null);
-                      else setActiveEventId(event.id);
-                    }}
-                  />
-                )}
-              />
-            </ErrorBoundary>
-          </div>
-        )
-      }
-      secondSlot={
-        activeEvent != null && activeConnection != null
-          ? () => (
-              <div className="grid grid-rows-[auto_minmax(0,1fr)]">
-                <div className="pb-3 px-2">
-                  <Separator />
-                </div>
-                <div className="mx-2 overflow-y-auto grid grid-rows-[auto_minmax(0,1fr)]">
-                  <div className="h-xs mb-2 grid grid-cols-[minmax(0,1fr)_auto] items-center">
-                    <div className="font-semibold">
-                      {activeEvent.messageType === 'close'
-                        ? 'Connection Closed'
-                        : activeEvent.messageType === 'open'
-                          ? 'Connection open'
-                          : `Message ${activeEvent.isServer ? 'Received' : 'Sent'}`}
-                    </div>
-                    {message !== '' && (
-                      <HStack space={1}>
-                        <Button
-                          variant="border"
-                          size="xs"
-                          onClick={() => {
-                            if (activeEventId == null) return;
-                            setHexDumps({ ...hexDumps, [activeEventId]: !hexDump });
-                          }}
-                        >
-                          {hexDump ? 'Show Message' : 'Show Hexdump'}
-                        </Button>
-                        <IconButton
-                          title="Copy message"
-                          icon="copy"
-                          size="xs"
-                          onClick={() => copyToClipboard(formattedMessage ?? '')}
-                        />
-                      </HStack>
-                    )}
-                  </div>
-                  {!showLarge && activeEvent.message.length > 1000 * 1000 ? (
-                    <VStack space={2} className="italic text-text-subtlest">
-                      Message previews larger than 1MB are hidden
-                      <div>
-                        <Button
-                          onClick={() => {
-                            setShowingLarge(true);
-                            setTimeout(() => {
-                              setShowLarge(true);
-                              setShowingLarge(false);
-                            }, 500);
-                          }}
-                          isLoading={showingLarge}
-                          color="secondary"
-                          variant="border"
-                          size="xs"
-                        >
-                          Try Showing
-                        </Button>
-                      </div>
-                    </VStack>
-                  ) : activeEvent.message.length === 0 ? (
-                    <EmptyStateText>No Content</EmptyStateText>
-                  ) : (
-                    <Editor
-                      language={language}
-                      defaultValue={formattedMessage ?? ''}
-                      wrapLines={false}
-                      readOnly={true}
-                      stateKey={null}
-                    />
-                  )}
-                </div>
-              </div>
-            )
-          : null
-      }
-    />
+        )}
+      />
+    </ErrorBoundary>
   );
 }
 
-function EventRow({
-  onClick,
-  isActive,
+function WebsocketEventRow({
   event,
+  isActive,
+  onClick,
 }: {
-  onClick?: () => void;
-  isActive?: boolean;
   event: WebsocketEvent;
+  isActive: boolean;
+  onClick: () => void;
 }) {
-  const { createdAt, message: messageBytes, isServer, messageType } = event;
-  const ref = useRef<HTMLDivElement>(null);
+  const { message: messageBytes, isServer, messageType } = event;
   const message = messageBytes
     ? new TextDecoder('utf-8').decode(Uint8Array.from(messageBytes))
     : '';
 
+  const iconColor =
+    messageType === 'close' || messageType === 'open' ? 'secondary' : isServer ? 'info' : 'primary';
+
+  const icon =
+    messageType === 'close' || messageType === 'open'
+      ? 'info'
+      : isServer
+        ? 'arrow_big_down_dash'
+        : 'arrow_big_up_dash';
+
+  const content =
+    messageType === 'close' ? (
+      'Disconnected from server'
+    ) : messageType === 'open' ? (
+      'Connected to server'
+    ) : message === '' ? (
+      <em className="italic text-text-subtlest">No content</em>
+    ) : (
+      <span className="text-xs">{message.slice(0, 1000)}</span>
+    );
+
   return (
-    <div className="px-1" ref={ref}>
-      <button
-        type="button"
-        onClick={onClick}
-        className={classNames(
-          'w-full grid grid-cols-[auto_minmax(0,3fr)_auto] gap-2 items-center text-left',
-          'px-1.5 h-xs font-mono cursor-default group focus:outline-none focus:text-text rounded',
-          isActive && '!bg-surface-active !text-text',
-          'text-text-subtle hover:text',
+    <EventViewerRow
+      isActive={isActive}
+      onClick={onClick}
+      icon={<Icon color={iconColor} icon={icon} />}
+      content={content}
+      timestamp={event.createdAt}
+    />
+  );
+}
+
+function WebsocketEventDetail({
+  event,
+  hexDump,
+  setHexDump,
+  showLarge,
+  showingLarge,
+  setShowLarge,
+  setShowingLarge,
+}: {
+  event: WebsocketEvent;
+  hexDump: boolean;
+  setHexDump: (v: boolean) => void;
+  showLarge: boolean;
+  showingLarge: boolean;
+  setShowLarge: (v: boolean) => void;
+  setShowingLarge: (v: boolean) => void;
+}) {
+  const message = useMemo(() => {
+    if (hexDump) {
+      return event.message ? hexy(event.message) : '';
+    }
+    return event.message ? new TextDecoder('utf-8').decode(Uint8Array.from(event.message)) : '';
+  }, [event.message, hexDump]);
+
+  const language = languageFromContentType(null, message);
+  const formattedMessage = useFormatText({ language, text: message, pretty: true });
+
+  const title =
+    event.messageType === 'close'
+      ? 'Connection Closed'
+      : event.messageType === 'open'
+        ? 'Connection Open'
+        : `Message ${event.isServer ? 'Received' : 'Sent'}`;
+
+  return (
+    <div className="h-full grid grid-rows-[auto_minmax(0,1fr)]">
+      <div className="h-xs mb-2 grid grid-cols-[minmax(0,1fr)_auto] items-center">
+        <div className="font-semibold">{title}</div>
+        {message !== '' && (
+          <HStack space={1}>
+            <Button variant="border" size="xs" onClick={() => setHexDump(!hexDump)}>
+              {hexDump ? 'Show Message' : 'Show Hexdump'}
+            </Button>
+            <IconButton
+              title="Copy message"
+              icon="copy"
+              size="xs"
+              onClick={() => copyToClipboard(formattedMessage ?? '')}
+            />
+          </HStack>
         )}
-      >
-        <Icon
-          color={
-            messageType === 'close' || messageType === 'open'
-              ? 'secondary'
-              : isServer
-                ? 'info'
-                : 'primary'
-          }
-          icon={
-            messageType === 'close' || messageType === 'open'
-              ? 'info'
-              : isServer
-                ? 'arrow_big_down_dash'
-                : 'arrow_big_up_dash'
-          }
+      </div>
+      {!showLarge && event.message.length > 1000 * 1000 ? (
+        <VStack space={2} className="italic text-text-subtlest">
+          Message previews larger than 1MB are hidden
+          <div>
+            <Button
+              onClick={() => {
+                setShowingLarge(true);
+                setTimeout(() => {
+                  setShowLarge(true);
+                  setShowingLarge(false);
+                }, 500);
+              }}
+              isLoading={showingLarge}
+              color="secondary"
+              variant="border"
+              size="xs"
+            >
+              Try Showing
+            </Button>
+          </div>
+        </VStack>
+      ) : event.message.length === 0 ? (
+        <EmptyStateText>No Content</EmptyStateText>
+      ) : (
+        <Editor
+          language={language}
+          defaultValue={formattedMessage ?? ''}
+          wrapLines={false}
+          readOnly={true}
+          stateKey={null}
         />
-        <div className={classNames('w-full truncate text-xs')}>
-          {messageType === 'close' ? (
-            'Disconnected from server'
-          ) : messageType === 'open' ? (
-            'Connected to server'
-          ) : message === '' ? (
-            <em className="italic text-text-subtlest">No content</em>
-          ) : (
-            message.slice(0, 1000)
-          )}
-          {/*{error && <span className="text-warning"> ({error})</span>}*/}
-        </div>
-        <div className={classNames('opacity-50 text-xs')}>
-          {format(`${createdAt}Z`, 'HH:mm:ss.SSS')}
-        </div>
-      </button>
+      )}
     </div>
   );
 }

src-web/components/core/AutoScroller.tsx

@@ -1,4 +1,4 @@
-import { useVirtualizer } from '@tanstack/react-virtual';
+import { useVirtualizer, type Virtualizer } from '@tanstack/react-virtual';
 import type { ReactElement, ReactNode, UIEvent } from 'react';
 import { useCallback, useLayoutEffect, useRef, useState } from 'react';
 import { IconButton } from './IconButton';
@@ -7,9 +7,19 @@ interface Props<T> {
   data: T[];
   render: (item: T, index: number) => ReactElement<HTMLElement>;
   header?: ReactNode;
+  /** Make container focusable for keyboard navigation */
+  focusable?: boolean;
+  /** Callback to expose the virtualizer for keyboard navigation */
+  onVirtualizerReady?: (virtualizer: Virtualizer<HTMLDivElement, Element>) => void;
 }
 
-export function AutoScroller<T>({ data, render, header }: Props<T>) {
+export function AutoScroller<T>({
+  data,
+  render,
+  header,
+  focusable = false,
+  onVirtualizerReady,
+}: Props<T>) {
   const containerRef = useRef<HTMLDivElement>(null);
   const [autoScroll, setAutoScroll] = useState<boolean>(true);
 
@@ -20,6 +30,11 @@ export function AutoScroller<T>({ data, render, header }: Props<T>) {
     estimateSize: () => 27, // react-virtual requires a height, so we'll give it one
   });
 
+  // Expose virtualizer to parent for keyboard navigation
+  useLayoutEffect(() => {
+    onVirtualizerReady?.(rowVirtualizer);
+  }, [rowVirtualizer, onVirtualizerReady]);
+
   // Scroll to new items
   const handleScroll = useCallback(
     (e: UIEvent<HTMLDivElement>) => {
@@ -63,7 +78,12 @@ export function AutoScroller<T>({ data, render, header }: Props<T>) {
         </div>
       )}
       {header ?? <span aria-hidden />}
-      <div ref={containerRef} className="h-full w-full overflow-y-auto" onScroll={handleScroll}>
+      <div
+        ref={containerRef}
+        className="h-full w-full overflow-y-auto"
+        onScroll={handleScroll}
+        tabIndex={focusable ? 0 : undefined}
+      >
         <div
           style={{
             height: `${rowVirtualizer.getTotalSize()}px`,

src-web/components/core/EventViewer.tsx

@@ -0,0 +1,183 @@
+import type { Virtualizer } from '@tanstack/react-virtual';
+import type { ReactNode } from 'react';
+import { useCallback, useMemo, useRef, useState } from 'react';
+import { useEventViewerKeyboard } from '../../hooks/useEventViewerKeyboard';
+import { AutoScroller } from './AutoScroller';
+import { Banner } from './Banner';
+import { Separator } from './Separator';
+import { SplitLayout } from './SplitLayout';
+
+interface EventViewerProps<T> {
+  /** Array of events to display */
+  events: T[];
+
+  /** Get unique key for each event */
+  getEventKey: (event: T, index: number) => string;
+
+  /** Render the event row - receives event, index, isActive, and onClick */
+  renderRow: (props: {
+    event: T;
+    index: number;
+    isActive: boolean;
+    onClick: () => void;
+  }) => ReactNode;
+
+  /** Render the detail pane for the selected event */
+  renderDetail?: (props: { event: T; index: number }) => ReactNode;
+
+  /** Optional header above the event list (e.g., connection status) */
+  header?: ReactNode;
+
+  /** Error message to display as a banner */
+  error?: string | null;
+
+  /** Name for SplitLayout state persistence */
+  splitLayoutName: string;
+
+  /** Default ratio for the split (0.0 - 1.0) */
+  defaultRatio?: number;
+
+  /** Enable keyboard navigation (arrow keys) */
+  enableKeyboardNav?: boolean;
+
+  /** Loading state */
+  isLoading?: boolean;
+
+  /** Message to show while loading */
+  loadingMessage?: string;
+
+  /** Message to show when no events */
+  emptyMessage?: string;
+
+  /** Callback when active index changes (for controlled state in parent) */
+  onActiveIndexChange?: (index: number | null) => void;
+}
+
+export function EventViewer<T>({
+  events,
+  getEventKey,
+  renderRow,
+  renderDetail,
+  header,
+  error,
+  splitLayoutName,
+  defaultRatio = 0.4,
+  enableKeyboardNav = true,
+  isLoading = false,
+  loadingMessage = 'Loading events...',
+  emptyMessage = 'No events recorded',
+  onActiveIndexChange,
+}: EventViewerProps<T>) {
+  const [activeIndex, setActiveIndexInternal] = useState<number | null>(null);
+
+  // Wrap setActiveIndex to notify parent
+  const setActiveIndex = useCallback(
+    (indexOrUpdater: number | null | ((prev: number | null) => number | null)) => {
+      setActiveIndexInternal((prev) => {
+        const newIndex =
+          typeof indexOrUpdater === 'function' ? indexOrUpdater(prev) : indexOrUpdater;
+        onActiveIndexChange?.(newIndex);
+        return newIndex;
+      });
+    },
+    [onActiveIndexChange],
+  );
+  const containerRef = useRef<HTMLDivElement>(null);
+  const virtualizerRef = useRef<Virtualizer<HTMLDivElement, Element> | null>(null);
+
+  const activeEvent = useMemo(
+    () => (activeIndex != null ? events[activeIndex] : null),
+    [activeIndex, events],
+  );
+
+  // Check if the event list container is focused
+  const isContainerFocused = useCallback(() => {
+    return containerRef.current?.contains(document.activeElement) ?? false;
+  }, []);
+
+  // Keyboard navigation
+  useEventViewerKeyboard({
+    totalCount: events.length,
+    activeIndex,
+    setActiveIndex,
+    virtualizer: virtualizerRef.current,
+    isContainerFocused,
+    enabled: enableKeyboardNav,
+  });
+
+  // Handle virtualizer ready callback
+  const handleVirtualizerReady = useCallback(
+    (virtualizer: Virtualizer<HTMLDivElement, Element>) => {
+      virtualizerRef.current = virtualizer;
+    },
+    [],
+  );
+
+  // Toggle selection on click
+  const handleRowClick = useCallback(
+    (index: number) => {
+      setActiveIndex((prev) => (prev === index ? null : index));
+    },
+    [setActiveIndex],
+  );
+
+  if (isLoading) {
+    return <div className="p-3 text-text-subtlest italic">{loadingMessage}</div>;
+  }
+
+  if (events.length === 0 && !error) {
+    return <div className="p-3 text-text-subtlest italic">{emptyMessage}</div>;
+  }
+
+  return (
+    <div ref={containerRef} className="h-full">
+      <SplitLayout
+        layout="vertical"
+        name={splitLayoutName}
+        defaultRatio={defaultRatio}
+        minHeightPx={10}
+        firstSlot={({ style }) => (
+          <div style={style} className="w-full grid grid-rows-[auto_minmax(0,1fr)]">
+            {header}
+            <AutoScroller
+              data={events}
+              focusable={enableKeyboardNav}
+              onVirtualizerReady={handleVirtualizerReady}
+              header={
+                error && (
+                  <Banner color="danger" className="m-3">
+                    {error}
+                  </Banner>
+                )
+              }
+              render={(event, index) => (
+                <div key={getEventKey(event, index)}>
+                  {renderRow({
+                    event,
+                    index,
+                    isActive: index === activeIndex,
+                    onClick: () => handleRowClick(index),
+                  })}
+                </div>
+              )}
+            />
+          </div>
+        )}
+        secondSlot={
+          activeEvent != null && renderDetail
+            ? ({ style }) => (
+                <div style={style} className="grid grid-rows-[auto_minmax(0,1fr)]">
+                  <div className="pb-3 px-2">
+                    <Separator />
+                  </div>
+                  <div className="mx-2 overflow-y-auto">
+                    {renderDetail({ event: activeEvent, index: activeIndex ?? 0 })}
+                  </div>
+                </div>
+              )
+            : null
+        }
+      />
+    </div>
+  );
+}

src-web/components/core/EventViewerRow.tsx

@@ -0,0 +1,38 @@
+import classNames from 'classnames';
+import { format } from 'date-fns';
+import type { ReactNode } from 'react';
+
+interface EventViewerRowProps {
+  isActive: boolean;
+  onClick: () => void;
+  icon: ReactNode;
+  content: ReactNode;
+  timestamp: string;
+}
+
+export function EventViewerRow({
+  isActive,
+  onClick,
+  icon,
+  content,
+  timestamp,
+}: EventViewerRowProps) {
+  return (
+    <div className="px-1">
+      <button
+        type="button"
+        onClick={onClick}
+        className={classNames(
+          'w-full grid grid-cols-[auto_minmax(0,1fr)_auto] gap-2 items-center text-left',
+          'px-1.5 h-xs font-mono text-editor cursor-default group focus:outline-none focus:text-text rounded',
+          isActive && '!bg-surface-active !text-text',
+          'text-text-subtle hover:text',
+        )}
+      >
+        {icon}
+        <div className="w-full truncate">{content}</div>
+        <div className="opacity-50">{format(`${timestamp}Z`, 'HH:mm:ss.SSS')}</div>
+      </button>
+    </div>
+  );
+}

src-web/components/responseViewers/EventStreamViewer.tsx

@@ -5,15 +5,13 @@ import { Fragment, useMemo, useState } from 'react';
 import { useFormatText } from '../../hooks/useFormatText';
 import { useResponseBodyEventSource } from '../../hooks/useResponseBodyEventSource';
 import { isJSON } from '../../lib/contentType';
-import { AutoScroller } from '../core/AutoScroller';
-import { Banner } from '../core/Banner';
 import { Button } from '../core/Button';
 import type { EditorProps } from '../core/Editor/Editor';
 import { Editor } from '../core/Editor/LazyEditor';
+import { EventViewer } from '../core/EventViewer';
+import { EventViewerRow } from '../core/EventViewerRow';
 import { Icon } from '../core/Icon';
 import { InlineCode } from '../core/InlineCode';
-import { Separator } from '../core/Separator';
-import { SplitLayout } from '../core/SplitLayout';
 import { HStack, VStack } from '../core/Stacks';
 
 interface Props {
@@ -33,134 +31,103 @@ export function EventStreamViewer({ response }: Props) {
 function ActualEventStreamViewer({ response }: Props) {
   const [showLarge, setShowLarge] = useState<boolean>(false);
   const [showingLarge, setShowingLarge] = useState<boolean>(false);
-  const [activeEventIndex, setActiveEventIndex] = useState<number | null>(null);
   const events = useResponseBodyEventSource(response);
-  const activeEvent = useMemo(
-    () => (activeEventIndex == null ? null : events.data?.[activeEventIndex]),
-    [activeEventIndex, events],
-  );
-
-  const language = useMemo<'text' | 'json'>(() => {
-    if (!activeEvent?.data) return 'text';
-    return isJSON(activeEvent?.data) ? 'json' : 'text';
-  }, [activeEvent?.data]);
 
   return (
-    <SplitLayout
-      layout="vertical"
-      name="grpc_events"
+    <EventViewer
+      events={events.data ?? []}
+      getEventKey={(_, index) => String(index)}
+      error={events.error ? String(events.error) : null}
+      splitLayoutName="sse_events"
       defaultRatio={0.4}
-      minHeightPx={20}
-      firstSlot={() => (
-        <AutoScroller
-          data={events.data ?? []}
-          header={
-            events.error && (
-              <Banner color="danger" className="m-3">
-                {String(events.error)}
-              </Banner>
-            )
+      renderRow={({ event, index, isActive, onClick }) => (
+        <EventViewerRow
+          isActive={isActive}
+          onClick={onClick}
+          icon={<Icon color="info" title="Server Message" icon="arrow_big_down_dash" />}
+          content={
+            <HStack space={2} className="items-center">
+              <EventLabels event={event} index={index} isActive={isActive} />
+              <span className="truncate text-xs">{event.data.slice(0, 1000)}</span>
+            </HStack>
           }
-          render={(event, i) => (
-            <EventRow
-              event={event}
-              isActive={i === activeEventIndex}
-              index={i}
-              onClick={() => {
-                if (i === activeEventIndex) setActiveEventIndex(null);
-                else setActiveEventIndex(i);
-              }}
-            />
-          )}
+          timestamp={new Date().toISOString().slice(0, -1)} // SSE events don't have timestamps
+        />
+      )}
+      renderDetail={({ event, index }) => (
+        <EventDetail
+          event={event}
+          index={index}
+          showLarge={showLarge}
+          showingLarge={showingLarge}
+          setShowLarge={setShowLarge}
+          setShowingLarge={setShowingLarge}
         />
       )}
-      secondSlot={
-        activeEvent
-          ? () => (
-              <div className="grid grid-rows-[auto_minmax(0,1fr)]">
-                <div className="pb-3 px-2">
-                  <Separator />
-                </div>
-                <div className="flex flex-col pl-2">
-                  <HStack space={1.5} className="mb-2 font-semibold">
-                    <EventLabels
-                      className="text-sm"
-                      event={activeEvent}
-                      index={activeEventIndex ?? 0}
-                    />
-                    Message Received
-                  </HStack>
-                  {!showLarge && activeEvent.data.length > 1000 * 1000 ? (
-                    <VStack space={2} className="italic text-text-subtlest">
-                      Message previews larger than 1MB are hidden
-                      <div>
-                        <Button
-                          onClick={() => {
-                            setShowingLarge(true);
-                            setTimeout(() => {
-                              setShowLarge(true);
-                              setShowingLarge(false);
-                            }, 500);
-                          }}
-                          isLoading={showingLarge}
-                          color="secondary"
-                          variant="border"
-                          size="xs"
-                        >
-                          Try Showing
-                        </Button>
-                      </div>
-                    </VStack>
-                  ) : (
-                    <FormattedEditor language={language} text={activeEvent.data} />
-                  )}
-                </div>
-              </div>
-            )
-          : null
-      }
     />
   );
 }
 
+function EventDetail({
+  event,
+  index,
+  showLarge,
+  showingLarge,
+  setShowLarge,
+  setShowingLarge,
+}: {
+  event: ServerSentEvent;
+  index: number;
+  showLarge: boolean;
+  showingLarge: boolean;
+  setShowLarge: (v: boolean) => void;
+  setShowingLarge: (v: boolean) => void;
+}) {
+  const language = useMemo<'text' | 'json'>(() => {
+    if (!event?.data) return 'text';
+    return isJSON(event?.data) ? 'json' : 'text';
+  }, [event?.data]);
+
+  return (
+    <div className="flex flex-col h-full">
+      <HStack space={1.5} className="mb-2 font-semibold">
+        <EventLabels className="text-sm" event={event} index={index} />
+        Message Received
+      </HStack>
+      {!showLarge && event.data.length > 1000 * 1000 ? (
+        <VStack space={2} className="italic text-text-subtlest">
+          Message previews larger than 1MB are hidden
+          <div>
+            <Button
+              onClick={() => {
+                setShowingLarge(true);
+                setTimeout(() => {
+                  setShowLarge(true);
+                  setShowingLarge(false);
+                }, 500);
+              }}
+              isLoading={showingLarge}
+              color="secondary"
+              variant="border"
+              size="xs"
+            >
+              Try Showing
+            </Button>
+          </div>
+        </VStack>
+      ) : (
+        <FormattedEditor language={language} text={event.data} />
+      )}
+    </div>
+  );
+}
+
 function FormattedEditor({ text, language }: { text: string; language: EditorProps['language'] }) {
   const formatted = useFormatText({ text, language, pretty: true });
   if (formatted == null) return null;
   return <Editor readOnly defaultValue={formatted} language={language} stateKey={null} />;
 }
 
-function EventRow({
-  onClick,
-  isActive,
-  event,
-  className,
-  index,
-}: {
-  onClick: () => void;
-  isActive: boolean;
-  event: ServerSentEvent;
-  className?: string;
-  index: number;
-}) {
-  return (
-    <button
-      type="button"
-      onClick={onClick}
-      className={classNames(
-        className,
-        'w-full grid grid-cols-[auto_auto_minmax(0,3fr)] gap-2 items-center text-left',
-        '-mx-1.5 px-1.5 h-xs font-mono group focus:outline-none focus:text-text rounded',
-        isActive && '!bg-surface-active !text-text',
-        'text-text-subtle hover:text',
-      )}
-    >
-      <Icon color="info" title="Server Message" icon="arrow_big_down_dash" />
-      <EventLabels className="text-sm" event={event} isActive={isActive} index={index} />
-      <div className={classNames('w-full truncate text-xs')}>{event.data.slice(0, 1000)}</div>
-    </button>
-  );
-}
-
 function EventLabels({
   className,
   event,
@@ -169,7 +136,7 @@ function EventLabels({
 }: {
   event: ServerSentEvent;
   index: number;
-  className: string;
+  className?: string;
   isActive?: boolean;
 }) {
   return (

src-web/hooks/useEventViewerKeyboard.ts

@@ -0,0 +1,70 @@
+import type { Virtualizer } from '@tanstack/react-virtual';
+import { useCallback } from 'react';
+import { useKey } from 'react-use';
+
+interface UseEventViewerKeyboardProps {
+  totalCount: number;
+  activeIndex: number | null;
+  setActiveIndex: (index: number | null) => void;
+  virtualizer?: Virtualizer<HTMLDivElement, Element> | null;
+  isContainerFocused: () => boolean;
+  enabled?: boolean;
+}
+
+export function useEventViewerKeyboard({
+  totalCount,
+  activeIndex,
+  setActiveIndex,
+  virtualizer,
+  isContainerFocused,
+  enabled = true,
+}: UseEventViewerKeyboardProps) {
+  const selectPrev = useCallback(() => {
+    if (totalCount === 0) return;
+
+    const newIndex = activeIndex == null ? 0 : Math.max(0, activeIndex - 1);
+    setActiveIndex(newIndex);
+    virtualizer?.scrollToIndex(newIndex, { align: 'auto' });
+  }, [activeIndex, setActiveIndex, totalCount, virtualizer]);
+
+  const selectNext = useCallback(() => {
+    if (totalCount === 0) return;
+
+    const newIndex = activeIndex == null ? 0 : Math.min(totalCount - 1, activeIndex + 1);
+    setActiveIndex(newIndex);
+    virtualizer?.scrollToIndex(newIndex, { align: 'auto' });
+  }, [activeIndex, setActiveIndex, totalCount, virtualizer]);
+
+  useKey(
+    (e) => e.key === 'ArrowUp' || e.key === 'k',
+    (e) => {
+      if (!enabled || !isContainerFocused()) return;
+      e.preventDefault();
+      selectPrev();
+    },
+    undefined,
+    [enabled, isContainerFocused, selectPrev],
+  );
+
+  useKey(
+    (e) => e.key === 'ArrowDown' || e.key === 'j',
+    (e) => {
+      if (!enabled || !isContainerFocused()) return;
+      e.preventDefault();
+      selectNext();
+    },
+    undefined,
+    [enabled, isContainerFocused, selectNext],
+  );
+
+  useKey(
+    (e) => e.key === 'Escape',
+    (e) => {
+      if (!enabled || !isContainerFocused()) return;
+      e.preventDefault();
+      setActiveIndex(null);
+    },
+    undefined,
+    [enabled, isContainerFocused, setActiveIndex],
+  );
+}