fix: show ToggleSidebarButton in threads view's ThreadHeader

src/components/Thread/ThreadHeader.tsx

@@ -12,7 +12,9 @@ import { useTypingContext } from '../../context/TypingContext';
 import type { LocalMessage } from 'stream-chat';
 import type { ThreadState } from 'stream-chat';
 import { Button } from '../Button';
-import { IconCrossMedium } from '../Icons';
+import { IconCrossMedium, IconLayoutAlignLeft } from '../Icons';
+import { ToggleSidebarButton } from '../Button/ToggleSidebarButton';
+import { useChatViewContext } from '../ChatView';
 
 const threadStateSelector = ({ replyCount }: ThreadState) => ({ replyCount });
 
@@ -40,8 +42,10 @@ const ThreadHeaderSubtitle = ({
     ({ parent_id, user }) => user?.id !== client.user?.id && parent_id === parentId,
   );
   const hasTyping = channelConfig?.typing_events !== false && typingInThread.length > 0;
-  const defaultSubtitle =
-    threadDisplayName + ' · ' + t('replyCount', { count: replyCount ?? 0 });
+  const replyCountText = t('replyCount', { count: replyCount ?? 0 });
+  const defaultSubtitle = threadDisplayName
+    ? `${threadDisplayName} · ${replyCountText}`
+    : replyCountText;
   return (
     <div className='str-chat__thread-header-subtitle'>
       <span
@@ -63,15 +67,18 @@ export type ThreadHeaderProps = {
   closeThread: (event?: React.BaseSyntheticEvent) => void;
   /** The thread parent message */
   thread: LocalMessage;
+  /** UI component to display menu icon, defaults to IconLayoutAlignLeft*/
+  MenuIcon?: React.ComponentType;
   /** Override the thread display title */
   overrideTitle?: string;
 };
 
 export const ThreadHeader = (props: ThreadHeaderProps) => {
-  const { closeThread, overrideTitle, thread } = props;
+  const { closeThread, MenuIcon = IconLayoutAlignLeft, overrideTitle, thread } = props;
 
   const { t } = useTranslationContext();
-  const { channel } = useChannelStateContext('ThreadHeader');
+  const { channel } = useChannelStateContext();
+  const { activeChatView } = useChatViewContext();
   const { displayTitle: channelDisplayTitle } = useChannelPreviewInfo({ channel });
 
   const threadInstance = useThreadContext();
@@ -93,6 +100,11 @@ export const ThreadHeader = (props: ThreadHeaderProps) => {
 
   return (
     <div className='str-chat__thread-header'>
+      {activeChatView === 'threads' && (
+        <ToggleSidebarButton canCollapse={!!threadInstance} mode='expand'>
+          <MenuIcon />
+        </ToggleSidebarButton>
+      )}
       <div className='str-chat__thread-header-details'>
         <div className='str-chat__thread-header-title'>{t('Thread')}</div>
         <ThreadHeaderSubtitle

src/components/Thread/__tests__/ThreadHeader.test.js

@@ -5,19 +5,47 @@ import React from 'react';
 import { ChannelStateProvider } from '../../../context/ChannelStateContext';
 import { ChatProvider } from '../../../context/ChatContext';
 import { TranslationProvider } from '../../../context/TranslationContext';
-import { useChannelDisplayName } from '../../ChannelPreview/hooks/useChannelDisplayName';
 import { ThreadHeader } from '../ThreadHeader';
 
-jest.mock('../../ChannelPreview/hooks/useChannelDisplayName', () => ({
-  useChannelDisplayName: jest.fn(),
+jest.mock('../../ChannelPreview/hooks/useChannelPreviewInfo', () => ({
+  useChannelPreviewInfo: jest.fn(() => ({ displayTitle: undefined })),
+}));
+
+jest.mock('../../../store', () => ({
+  useStateStore: jest.fn(() => undefined),
+}));
+
+jest.mock('../../../context/TypingContext', () => ({
+  useTypingContext: jest.fn(() => ({ typing: {} })),
+}));
+
+jest.mock('../../TypingIndicator/TypingIndicatorHeader', () => ({
+  TypingIndicatorHeader: () => <div>Typing...</div>,
+}));
+
+jest.mock('../../Button/ToggleSidebarButton', () => ({
+  ToggleSidebarButton: ({ children }) => (
+    <div data-testid='toggle-sidebar-button'>{children}</div>
+  ),
 }));
 
 jest.mock('../../Threads', () => ({
   useThreadContext: jest.fn(() => undefined),
 }));
 
+jest.mock('../../ChatView', () => ({
+  useChatViewContext: jest.fn(() => ({ activeChatView: 'channels' })),
+}));
+
+const {
+  useChannelPreviewInfo,
+} = require('../../ChannelPreview/hooks/useChannelPreviewInfo');
+const { useChatViewContext } = require('../../ChatView');
+const { useThreadContext } = require('../../Threads');
+
 const alice = { id: 'alice', name: 'Alice' };
 const bob = { id: 'bob', name: 'Bob' };
+
 const createThread = (user) => ({
   id: `${user?.id ?? 'thread'}-message`,
   reply_count: 2,
@@ -36,20 +64,38 @@ const createChannel = (overrides = {}) => ({
   ...overrides,
 });
 
-const renderComponent = ({ channelOverrides = {}, props = {} } = {}) => {
-  const client = { off: jest.fn(), on: jest.fn(), userID: alice.id };
+const renderComponent = ({
+  activeChatView = 'channels',
+  channelOverrides = {},
+  props = {},
+  threadContext = undefined,
+} = {}) => {
+  const client = { off: jest.fn(), on: jest.fn(), user: alice, userID: alice.id };
   const thread = createThread(alice);
   const channel = createChannel(channelOverrides);
 
+  useChatViewContext.mockReturnValue({
+    activeChatView,
+    setActiveChatView: jest.fn(),
+  });
+  useThreadContext.mockReturnValue(threadContext);
+
   return render(
-    <ChatProvider value={{ client, latestMessageDatesByChannels: {} }}>
-      <ChannelStateProvider value={{ channel }}>
+    <ChatProvider
+      value={{
+        client,
+        closeMobileNav: jest.fn(),
+        latestMessageDatesByChannels: {},
+        navOpen: false,
+        openMobileNav: jest.fn(),
+      }}
+    >
+      <ChannelStateProvider value={{ channel, thread }}>
         <TranslationProvider
           value={{
             t: (key, options) => {
               if (key === 'Thread') return 'Thread';
               if (key === 'replyCount') return `${options.count} replies`;
-              if (key === 'Direct message') return 'Direct message';
               if (key === 'aria/Close thread') return 'Close thread';
 
               return key;
@@ -69,18 +115,18 @@ describe('ThreadHeader', () => {
     jest.clearAllMocks();
   });
 
-  it('renders the channel display title in the subtitle', async () => {
-    useChannelDisplayName.mockReturnValue('Bob');
+  it('renders the channel display title in the subtitle', () => {
+    useChannelPreviewInfo.mockReturnValue({ displayTitle: 'Bob' });
 
-    await renderComponent();
+    renderComponent();
 
     expect(screen.getByText('Bob · 2 replies')).toBeInTheDocument();
   });
 
-  it('falls back to the parent message author when the channel has no display title', async () => {
-    useChannelDisplayName.mockReturnValue(undefined);
+  it('falls back to the parent message author when the channel has no display title', () => {
+    useChannelPreviewInfo.mockReturnValue({ displayTitle: undefined });
 
-    await renderComponent({
+    renderComponent({
       channelOverrides: {
         state: {
           members: {
@@ -96,10 +142,10 @@ describe('ThreadHeader', () => {
     expect(screen.getByText('Alice · 2 replies')).toBeInTheDocument();
   });
 
-  it('renders only the reply count when no title source is available', async () => {
-    useChannelDisplayName.mockReturnValue(undefined);
+  it('renders only the reply count when no title source is available', () => {
+    useChannelPreviewInfo.mockReturnValue({ displayTitle: undefined });
 
-    await renderComponent({
+    renderComponent({
       channelOverrides: {
         state: {
           members: {
@@ -115,4 +161,26 @@ describe('ThreadHeader', () => {
     expect(screen.getByText('2 replies')).toBeInTheDocument();
     expect(screen.queryByText(/^undefined ·/)).not.toBeInTheDocument();
   });
+
+  it('does not render the sidebar toggle in the channels view', () => {
+    useChannelPreviewInfo.mockReturnValue({ displayTitle: 'Bob' });
+
+    renderComponent({
+      activeChatView: 'channels',
+      threadContext: { id: 'thread-1' },
+    });
+
+    expect(screen.queryByTestId('toggle-sidebar-button')).not.toBeInTheDocument();
+  });
+
+  it('renders the sidebar toggle in the threads view', () => {
+    useChannelPreviewInfo.mockReturnValue({ displayTitle: 'Bob' });
+
+    renderComponent({
+      activeChatView: 'threads',
+      threadContext: { id: 'thread-1' },
+    });
+
+    expect(screen.getByTestId('toggle-sidebar-button')).toBeInTheDocument();
+  });
 });