Grouped Notifications UI (#30440)

Co-authored-by: Eugen Rochko <eugen@zeonfederated.com>
Co-authored-by: Claire <claire.github-309c@sitedethib.com>

app/javascript/mastodon/features/notifications_v2/components/avatar_group.tsx

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+import { Link } from 'react-router-dom';
+
+import { Avatar } from 'mastodon/components/avatar';
+import { NOTIFICATIONS_GROUP_MAX_AVATARS } from 'mastodon/models/notification_group';
+import { useAppSelector } from 'mastodon/store';
+
+const AvatarWrapper: React.FC<{ accountId: string }> = ({ accountId }) => {
+  const account = useAppSelector((state) => state.accounts.get(accountId));
+
+  if (!account) return null;
+
+  return (
+    <Link
+      to={`/@${account.acct}`}
+      title={`@${account.acct}`}
+      data-hover-card-account={account.id}
+    >
+      <Avatar account={account} size={28} />
+    </Link>
+  );
+};
+
+export const AvatarGroup: React.FC<{ accountIds: string[] }> = ({
+  accountIds,
+}) => (
+  <div className='notification-group__avatar-group'>
+    {accountIds.slice(0, NOTIFICATIONS_GROUP_MAX_AVATARS).map((accountId) => (
+      <AvatarWrapper key={accountId} accountId={accountId} />
+    ))}
+  </div>
+);

app/javascript/mastodon/features/notifications_v2/components/embedded_status.tsx

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+import { useCallback } from 'react';
+
+import { FormattedMessage } from 'react-intl';
+
+import { useHistory } from 'react-router-dom';
+
+import type { List as ImmutableList, RecordOf } from 'immutable';
+
+import BarChart4BarsIcon from '@/material-icons/400-24px/bar_chart_4_bars.svg?react';
+import PhotoLibraryIcon from '@/material-icons/400-24px/photo_library.svg?react';
+import { Avatar } from 'mastodon/components/avatar';
+import { DisplayName } from 'mastodon/components/display_name';
+import { Icon } from 'mastodon/components/icon';
+import type { Status } from 'mastodon/models/status';
+import { useAppSelector } from 'mastodon/store';
+
+import { EmbeddedStatusContent } from './embedded_status_content';
+
+export type Mention = RecordOf<{ url: string; acct: string }>;
+
+export const EmbeddedStatus: React.FC<{ statusId: string }> = ({
+  statusId,
+}) => {
+  const history = useHistory();
+
+  const status = useAppSelector(
+    (state) => state.statuses.get(statusId) as Status | undefined,
+  );
+
+  const account = useAppSelector((state) =>
+    state.accounts.get(status?.get('account') as string),
+  );
+
+  const handleClick = useCallback(() => {
+    if (!account) return;
+
+    history.push(`/@${account.acct}/${statusId}`);
+  }, [statusId, account, history]);
+
+  if (!status) {
+    return null;
+  }
+
+  // Assign status attributes to variables with a forced type, as status is not yet properly typed
+  const contentHtml = status.get('contentHtml') as string;
+  const poll = status.get('poll');
+  const language = status.get('language') as string;
+  const mentions = status.get('mentions') as ImmutableList<Mention>;
+  const mediaAttachmentsSize = (
+    status.get('media_attachments') as ImmutableList<unknown>
+  ).size;
+
+  return (
+    <div className='notification-group__embedded-status'>
+      <div className='notification-group__embedded-status__account'>
+        <Avatar account={account} size={16} />
+        <DisplayName account={account} />
+      </div>
+
+      <EmbeddedStatusContent
+        className='notification-group__embedded-status__content reply-indicator__content translate'
+        content={contentHtml}
+        language={language}
+        mentions={mentions}
+        onClick={handleClick}
+      />
+
+      {(poll || mediaAttachmentsSize > 0) && (
+        <div className='notification-group__embedded-status__attachments reply-indicator__attachments'>
+          {!!poll && (
+            <>
+              <Icon icon={BarChart4BarsIcon} id='bar-chart-4-bars' />
+              <FormattedMessage
+                id='reply_indicator.poll'
+                defaultMessage='Poll'
+              />
+            </>
+          )}
+          {mediaAttachmentsSize > 0 && (
+            <>
+              <Icon icon={PhotoLibraryIcon} id='photo-library' />
+              <FormattedMessage
+                id='reply_indicator.attachments'
+                defaultMessage='{count, plural, one {# attachment} other {# attachments}}'
+                values={{ count: mediaAttachmentsSize }}
+              />
+            </>
+          )}
+        </div>
+      )}
+    </div>
+  );
+};

app/javascript/mastodon/features/notifications_v2/components/embedded_status_content.tsx

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+import { useCallback, useRef } from 'react';
+
+import { useHistory } from 'react-router-dom';
+
+import type { List } from 'immutable';
+
+import type { History } from 'history';
+
+import type { Mention } from './embedded_status';
+
+const handleMentionClick = (
+  history: History,
+  mention: Mention,
+  e: MouseEvent,
+) => {
+  if (e.button === 0 && !(e.ctrlKey || e.metaKey)) {
+    e.preventDefault();
+    history.push(`/@${mention.get('acct')}`);
+  }
+};
+
+const handleHashtagClick = (
+  history: History,
+  hashtag: string,
+  e: MouseEvent,
+) => {
+  if (e.button === 0 && !(e.ctrlKey || e.metaKey)) {
+    e.preventDefault();
+    history.push(`/tags/${hashtag.replace(/^#/, '')}`);
+  }
+};
+
+export const EmbeddedStatusContent: React.FC<{
+  content: string;
+  mentions: List<Mention>;
+  language: string;
+  onClick?: () => void;
+  className?: string;
+}> = ({ content, mentions, language, onClick, className }) => {
+  const clickCoordinatesRef = useRef<[number, number] | null>();
+  const history = useHistory();
+
+  const handleMouseDown = useCallback<React.MouseEventHandler<HTMLDivElement>>(
+    ({ clientX, clientY }) => {
+      clickCoordinatesRef.current = [clientX, clientY];
+    },
+    [clickCoordinatesRef],
+  );
+
+  const handleMouseUp = useCallback<React.MouseEventHandler<HTMLDivElement>>(
+    ({ clientX, clientY, target, button }) => {
+      const [startX, startY] = clickCoordinatesRef.current ?? [0, 0];
+      const [deltaX, deltaY] = [
+        Math.abs(clientX - startX),
+        Math.abs(clientY - startY),
+      ];
+
+      let element: HTMLDivElement | null = target as HTMLDivElement;
+
+      while (element) {
+        if (
+          element.localName === 'button' ||
+          element.localName === 'a' ||
+          element.localName === 'label'
+        ) {
+          return;
+        }
+
+        element = element.parentNode as HTMLDivElement | null;
+      }
+
+      if (deltaX + deltaY < 5 && button === 0 && onClick) {
+        onClick();
+      }
+
+      clickCoordinatesRef.current = null;
+    },
+    [clickCoordinatesRef, onClick],
+  );
+
+  const handleMouseEnter = useCallback<React.MouseEventHandler<HTMLDivElement>>(
+    ({ currentTarget }) => {
+      const emojis =
+        currentTarget.querySelectorAll<HTMLImageElement>('.custom-emoji');
+
+      for (const emoji of emojis) {
+        const newSrc = emoji.getAttribute('data-original');
+        if (newSrc) emoji.src = newSrc;
+      }
+    },
+    [],
+  );
+
+  const handleMouseLeave = useCallback<React.MouseEventHandler<HTMLDivElement>>(
+    ({ currentTarget }) => {
+      const emojis =
+        currentTarget.querySelectorAll<HTMLImageElement>('.custom-emoji');
+
+      for (const emoji of emojis) {
+        const newSrc = emoji.getAttribute('data-static');
+        if (newSrc) emoji.src = newSrc;
+      }
+    },
+    [],
+  );
+
+  const handleContentRef = useCallback(
+    (node: HTMLDivElement | null) => {
+      if (!node) {
+        return;
+      }
+
+      const links = node.querySelectorAll<HTMLAnchorElement>('a');
+
+      for (const link of links) {
+        if (link.classList.contains('status-link')) {
+          continue;
+        }
+
+        link.classList.add('status-link');
+
+        const mention = mentions.find((item) => link.href === item.get('url'));
+
+        if (mention) {
+          link.addEventListener(
+            'click',
+            handleMentionClick.bind(null, history, mention),
+            false,
+          );
+          link.setAttribute('title', `@${mention.get('acct')}`);
+          link.setAttribute('href', `/@${mention.get('acct')}`);
+        } else if (
+          link.textContent?.[0] === '#' ||
+          link.previousSibling?.textContent?.endsWith('#')
+        ) {
+          link.addEventListener(
+            'click',
+            handleHashtagClick.bind(null, history, link.text),
+            false,
+          );
+          link.setAttribute('href', `/tags/${link.text.replace(/^#/, '')}`);
+        } else {
+          link.setAttribute('title', link.href);
+          link.classList.add('unhandled-link');
+        }
+      }
+    },
+    [mentions, history],
+  );
+
+  return (
+    <div
+      role='button'
+      tabIndex={0}
+      className={className}
+      ref={handleContentRef}
+      lang={language}
+      dangerouslySetInnerHTML={{ __html: content }}
+      onMouseDown={handleMouseDown}
+      onMouseUp={handleMouseUp}
+      onMouseEnter={handleMouseEnter}
+      onMouseLeave={handleMouseLeave}
+    />
+  );
+};

app/javascript/mastodon/features/notifications_v2/components/names_list.tsx

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+import { FormattedMessage } from 'react-intl';
+
+import { Link } from 'react-router-dom';
+
+import { useAppSelector } from 'mastodon/store';
+
+export const NamesList: React.FC<{
+  accountIds: string[];
+  total: number;
+  seeMoreHref?: string;
+}> = ({ accountIds, total, seeMoreHref }) => {
+  const lastAccountId = accountIds[0] ?? '0';
+  const account = useAppSelector((state) => state.accounts.get(lastAccountId));
+
+  if (!account) return null;
+
+  const displayedName = (
+    <Link
+      to={`/@${account.acct}`}
+      title={`@${account.acct}`}
+      data-hover-card-account={account.id}
+    >
+      <bdi dangerouslySetInnerHTML={{ __html: account.display_name_html }} />
+    </Link>
+  );
+
+  if (total === 1) {
+    return displayedName;
+  }
+
+  if (seeMoreHref)
+    return (
+      <FormattedMessage
+        id='name_and_others_with_link'
+        defaultMessage='{name} and <a>{count, plural, one {# other} other {# others}}</a>'
+        values={{
+          name: displayedName,
+          count: total - 1,
+          a: (chunks) => <Link to={seeMoreHref}>{chunks}</Link>,
+        }}
+      />
+    );
+
+  return (
+    <FormattedMessage
+      id='name_and_others'
+      defaultMessage='{name} and {count, plural, one {# other} other {# others}}'
+      values={{ name: displayedName, count: total - 1 }}
+    />
+  );
+};

app/javascript/mastodon/features/notifications_v2/components/notification_admin_report.tsx

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+import { FormattedMessage, useIntl, defineMessages } from 'react-intl';
+
+import classNames from 'classnames';
+
+import FlagIcon from '@/material-icons/400-24px/flag-fill.svg?react';
+import { Icon } from 'mastodon/components/icon';
+import { RelativeTimestamp } from 'mastodon/components/relative_timestamp';
+import type { NotificationGroupAdminReport } from 'mastodon/models/notification_group';
+import { useAppSelector } from 'mastodon/store';
+
+// This needs to be kept in sync with app/models/report.rb
+const messages = defineMessages({
+  other: {
+    id: 'report_notification.categories.other_sentence',
+    defaultMessage: 'other',
+  },
+  spam: {
+    id: 'report_notification.categories.spam_sentence',
+    defaultMessage: 'spam',
+  },
+  legal: {
+    id: 'report_notification.categories.legal_sentence',
+    defaultMessage: 'illegal content',
+  },
+  violation: {
+    id: 'report_notification.categories.violation_sentence',
+    defaultMessage: 'rule violation',
+  },
+});
+
+export const NotificationAdminReport: React.FC<{
+  notification: NotificationGroupAdminReport;
+  unread?: boolean;
+}> = ({ notification, notification: { report }, unread }) => {
+  const intl = useIntl();
+  const targetAccount = useAppSelector((state) =>
+    state.accounts.get(report.targetAccountId),
+  );
+  const account = useAppSelector((state) =>
+    state.accounts.get(notification.sampleAccountIds[0] ?? '0'),
+  );
+
+  if (!account || !targetAccount) return null;
+
+  const values = {
+    name: (
+      <bdi
+        dangerouslySetInnerHTML={{ __html: account.get('display_name_html') }}
+      />
+    ),
+    target: (
+      <bdi
+        dangerouslySetInnerHTML={{
+          __html: targetAccount.get('display_name_html'),
+        }}
+      />
+    ),
+    category: intl.formatMessage(messages[report.category]),
+    count: report.status_ids.length,
+  };
+
+  let message;
+
+  if (report.status_ids.length > 0) {
+    if (report.category === 'other') {
+      message = (
+        <FormattedMessage
+          id='notification.admin.report_account_other'
+          defaultMessage='{name} reported {count, plural, one {one post} other {# posts}} from {target}'
+          values={values}
+        />
+      );
+    } else {
+      message = (
+        <FormattedMessage
+          id='notification.admin.report_account'
+          defaultMessage='{name} reported {count, plural, one {one post} other {# posts}} from {target} for {category}'
+          values={values}
+        />
+      );
+    }
+  } else {
+    if (report.category === 'other') {
+      message = (
+        <FormattedMessage
+          id='notification.admin.report_statuses_other'
+          defaultMessage='{name} reported {target}'
+          values={values}
+        />
+      );
+    } else {
+      message = (
+        <FormattedMessage
+          id='notification.admin.report_statuses'
+          defaultMessage='{name} reported {target} for {category}'
+          values={values}
+        />
+      );
+    }
+  }
+
+  return (
+    <a
+      href={`/admin/reports/${report.id}`}
+      target='_blank'
+      rel='noopener noreferrer'
+      className={classNames(
+        'notification-group notification-group--link notification-group--admin-report focusable',
+        { 'notification-group--unread': unread },
+      )}
+    >
+      <div className='notification-group__icon'>
+        <Icon id='flag' icon={FlagIcon} />
+      </div>
+
+      <div className='notification-group__main'>
+        <div className='notification-group__main__header'>
+          <div className='notification-group__main__header__label'>
+            {message}
+            <RelativeTimestamp timestamp={report.created_at} />
+          </div>
+        </div>
+
+        {report.comment.length > 0 && (
+          <div className='notification-group__embedded-status__content'>
+            “{report.comment}”
+          </div>
+        )}
+      </div>
+    </a>
+  );
+};

app/javascript/mastodon/features/notifications_v2/components/notification_admin_sign_up.tsx

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+import { FormattedMessage } from 'react-intl';
+
+import PersonAddIcon from '@/material-icons/400-24px/person_add-fill.svg?react';
+import type { NotificationGroupAdminSignUp } from 'mastodon/models/notification_group';
+
+import type { LabelRenderer } from './notification_group_with_status';
+import { NotificationGroupWithStatus } from './notification_group_with_status';
+
+const labelRenderer: LabelRenderer = (values) => (
+  <FormattedMessage
+    id='notification.admin.sign_up'
+    defaultMessage='{name} signed up'
+    values={values}
+  />
+);
+
+export const NotificationAdminSignUp: React.FC<{
+  notification: NotificationGroupAdminSignUp;
+  unread: boolean;
+}> = ({ notification, unread }) => (
+  <NotificationGroupWithStatus
+    type='admin-sign-up'
+    icon={PersonAddIcon}
+    iconId='person-add'
+    accountIds={notification.sampleAccountIds}
+    timestamp={notification.latest_page_notification_at}
+    count={notification.notifications_count}
+    labelRenderer={labelRenderer}
+    unread={unread}
+  />
+);

app/javascript/mastodon/features/notifications_v2/components/notification_favourite.tsx

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+import { FormattedMessage } from 'react-intl';
+
+import StarIcon from '@/material-icons/400-24px/star-fill.svg?react';
+import type { NotificationGroupFavourite } from 'mastodon/models/notification_group';
+import { useAppSelector } from 'mastodon/store';
+
+import type { LabelRenderer } from './notification_group_with_status';
+import { NotificationGroupWithStatus } from './notification_group_with_status';
+
+const labelRenderer: LabelRenderer = (values) => (
+  <FormattedMessage
+    id='notification.favourite'
+    defaultMessage='{name} favorited your status'
+    values={values}
+  />
+);
+
+export const NotificationFavourite: React.FC<{
+  notification: NotificationGroupFavourite;
+  unread: boolean;
+}> = ({ notification, unread }) => {
+  const { statusId } = notification;
+  const statusAccount = useAppSelector(
+    (state) =>
+      state.accounts.get(state.statuses.getIn([statusId, 'account']) as string)
+        ?.acct,
+  );
+
+  return (
+    <NotificationGroupWithStatus
+      type='favourite'
+      icon={StarIcon}
+      iconId='star'
+      accountIds={notification.sampleAccountIds}
+      statusId={notification.statusId}
+      timestamp={notification.latest_page_notification_at}
+      count={notification.notifications_count}
+      labelRenderer={labelRenderer}
+      labelSeeMoreHref={
+        statusAccount ? `/@${statusAccount}/${statusId}/favourites` : undefined
+      }
+      unread={unread}
+    />
+  );
+};

app/javascript/mastodon/features/notifications_v2/components/notification_follow.tsx

@@ -0,0 +1,31 @@
+import { FormattedMessage } from 'react-intl';
+
+import PersonAddIcon from '@/material-icons/400-24px/person_add-fill.svg?react';
+import type { NotificationGroupFollow } from 'mastodon/models/notification_group';
+
+import type { LabelRenderer } from './notification_group_with_status';
+import { NotificationGroupWithStatus } from './notification_group_with_status';
+
+const labelRenderer: LabelRenderer = (values) => (
+  <FormattedMessage
+    id='notification.follow'
+    defaultMessage='{name} followed you'
+    values={values}
+  />
+);
+
+export const NotificationFollow: React.FC<{
+  notification: NotificationGroupFollow;
+  unread: boolean;
+}> = ({ notification, unread }) => (
+  <NotificationGroupWithStatus
+    type='follow'
+    icon={PersonAddIcon}
+    iconId='person-add'
+    accountIds={notification.sampleAccountIds}
+    timestamp={notification.latest_page_notification_at}
+    count={notification.notifications_count}
+    labelRenderer={labelRenderer}
+    unread={unread}
+  />
+);

app/javascript/mastodon/features/notifications_v2/components/notification_follow_request.tsx

@@ -0,0 +1,78 @@
+import { useCallback } from 'react';
+
+import { FormattedMessage, useIntl, defineMessages } from 'react-intl';
+
+import CheckIcon from '@/material-icons/400-24px/check.svg?react';
+import CloseIcon from '@/material-icons/400-24px/close.svg?react';
+import PersonAddIcon from '@/material-icons/400-24px/person_add-fill.svg?react';
+import {
+  authorizeFollowRequest,
+  rejectFollowRequest,
+} from 'mastodon/actions/accounts';
+import { IconButton } from 'mastodon/components/icon_button';
+import type { NotificationGroupFollowRequest } from 'mastodon/models/notification_group';
+import { useAppDispatch } from 'mastodon/store';
+
+import type { LabelRenderer } from './notification_group_with_status';
+import { NotificationGroupWithStatus } from './notification_group_with_status';
+
+const messages = defineMessages({
+  authorize: { id: 'follow_request.authorize', defaultMessage: 'Authorize' },
+  reject: { id: 'follow_request.reject', defaultMessage: 'Reject' },
+});
+
+const labelRenderer: LabelRenderer = (values) => (
+  <FormattedMessage
+    id='notification.follow_request'
+    defaultMessage='{name} has requested to follow you'
+    values={values}
+  />
+);
+
+export const NotificationFollowRequest: React.FC<{
+  notification: NotificationGroupFollowRequest;
+  unread: boolean;
+}> = ({ notification, unread }) => {
+  const intl = useIntl();
+
+  const dispatch = useAppDispatch();
+
+  const onAuthorize = useCallback(() => {
+    dispatch(authorizeFollowRequest(notification.sampleAccountIds[0]));
+  }, [dispatch, notification.sampleAccountIds]);
+
+  const onReject = useCallback(() => {
+    dispatch(rejectFollowRequest(notification.sampleAccountIds[0]));
+  }, [dispatch, notification.sampleAccountIds]);
+
+  const actions = (
+    <div className='notification-group__actions'>
+      <IconButton
+        title={intl.formatMessage(messages.reject)}
+        icon='times'
+        iconComponent={CloseIcon}
+        onClick={onReject}
+      />
+      <IconButton
+        title={intl.formatMessage(messages.authorize)}
+        icon='check'
+        iconComponent={CheckIcon}
+        onClick={onAuthorize}
+      />
+    </div>
+  );
+
+  return (
+    <NotificationGroupWithStatus
+      type='follow-request'
+      icon={PersonAddIcon}
+      iconId='person-add'
+      accountIds={notification.sampleAccountIds}
+      timestamp={notification.latest_page_notification_at}
+      count={notification.notifications_count}
+      labelRenderer={labelRenderer}
+      actions={actions}
+      unread={unread}
+    />
+  );
+};

app/javascript/mastodon/features/notifications_v2/components/notification_group.tsx

@@ -0,0 +1,134 @@
+import { useMemo } from 'react';
+
+import { HotKeys } from 'react-hotkeys';
+
+import type { NotificationGroup as NotificationGroupModel } from 'mastodon/models/notification_group';
+import { useAppSelector } from 'mastodon/store';
+
+import { NotificationAdminReport } from './notification_admin_report';
+import { NotificationAdminSignUp } from './notification_admin_sign_up';
+import { NotificationFavourite } from './notification_favourite';
+import { NotificationFollow } from './notification_follow';
+import { NotificationFollowRequest } from './notification_follow_request';
+import { NotificationMention } from './notification_mention';
+import { NotificationModerationWarning } from './notification_moderation_warning';
+import { NotificationPoll } from './notification_poll';
+import { NotificationReblog } from './notification_reblog';
+import { NotificationSeveredRelationships } from './notification_severed_relationships';
+import { NotificationStatus } from './notification_status';
+import { NotificationUpdate } from './notification_update';
+
+export const NotificationGroup: React.FC<{
+  notificationGroupId: NotificationGroupModel['group_key'];
+  unread: boolean;
+  onMoveUp: (groupId: string) => void;
+  onMoveDown: (groupId: string) => void;
+}> = ({ notificationGroupId, unread, onMoveUp, onMoveDown }) => {
+  const notificationGroup = useAppSelector((state) =>
+    state.notificationGroups.groups.find(
+      (item) => item.type !== 'gap' && item.group_key === notificationGroupId,
+    ),
+  );
+
+  const handlers = useMemo(
+    () => ({
+      moveUp: () => {
+        onMoveUp(notificationGroupId);
+      },
+
+      moveDown: () => {
+        onMoveDown(notificationGroupId);
+      },
+    }),
+    [notificationGroupId, onMoveUp, onMoveDown],
+  );
+
+  if (!notificationGroup || notificationGroup.type === 'gap') return null;
+
+  let content;
+
+  switch (notificationGroup.type) {
+    case 'reblog':
+      content = (
+        <NotificationReblog unread={unread} notification={notificationGroup} />
+      );
+      break;
+    case 'favourite':
+      content = (
+        <NotificationFavourite
+          unread={unread}
+          notification={notificationGroup}
+        />
+      );
+      break;
+    case 'severed_relationships':
+      content = (
+        <NotificationSeveredRelationships
+          unread={unread}
+          notification={notificationGroup}
+        />
+      );
+      break;
+    case 'mention':
+      content = (
+        <NotificationMention unread={unread} notification={notificationGroup} />
+      );
+      break;
+    case 'follow':
+      content = (
+        <NotificationFollow unread={unread} notification={notificationGroup} />
+      );
+      break;
+    case 'follow_request':
+      content = (
+        <NotificationFollowRequest
+          unread={unread}
+          notification={notificationGroup}
+        />
+      );
+      break;
+    case 'poll':
+      content = (
+        <NotificationPoll unread={unread} notification={notificationGroup} />
+      );
+      break;
+    case 'status':
+      content = (
+        <NotificationStatus unread={unread} notification={notificationGroup} />
+      );
+      break;
+    case 'update':
+      content = (
+        <NotificationUpdate unread={unread} notification={notificationGroup} />
+      );
+      break;
+    case 'admin.sign_up':
+      content = (
+        <NotificationAdminSignUp
+          unread={unread}
+          notification={notificationGroup}
+        />
+      );
+      break;
+    case 'admin.report':
+      content = (
+        <NotificationAdminReport
+          unread={unread}
+          notification={notificationGroup}
+        />
+      );
+      break;
+    case 'moderation_warning':
+      content = (
+        <NotificationModerationWarning
+          unread={unread}
+          notification={notificationGroup}
+        />
+      );
+      break;
+    default:
+      return null;
+  }
+
+  return <HotKeys handlers={handlers}>{content}</HotKeys>;
+};

app/javascript/mastodon/features/notifications_v2/components/notification_group_with_status.tsx

@@ -0,0 +1,91 @@
+import { useMemo } from 'react';
+
+import classNames from 'classnames';
+
+import type { IconProp } from 'mastodon/components/icon';
+import { Icon } from 'mastodon/components/icon';
+import { RelativeTimestamp } from 'mastodon/components/relative_timestamp';
+
+import { AvatarGroup } from './avatar_group';
+import { EmbeddedStatus } from './embedded_status';
+import { NamesList } from './names_list';
+
+export type LabelRenderer = (
+  values: Record<string, React.ReactNode>,
+) => JSX.Element;
+
+export const NotificationGroupWithStatus: React.FC<{
+  icon: IconProp;
+  iconId: string;
+  statusId?: string;
+  actions?: JSX.Element;
+  count: number;
+  accountIds: string[];
+  timestamp: string;
+  labelRenderer: LabelRenderer;
+  labelSeeMoreHref?: string;
+  type: string;
+  unread: boolean;
+}> = ({
+  icon,
+  iconId,
+  timestamp,
+  accountIds,
+  actions,
+  count,
+  statusId,
+  labelRenderer,
+  labelSeeMoreHref,
+  type,
+  unread,
+}) => {
+  const label = useMemo(
+    () =>
+      labelRenderer({
+        name: (
+          <NamesList
+            accountIds={accountIds}
+            total={count}
+            seeMoreHref={labelSeeMoreHref}
+          />
+        ),
+      }),
+    [labelRenderer, accountIds, count, labelSeeMoreHref],
+  );
+
+  return (
+    <div
+      role='button'
+      className={classNames(
+        `notification-group focusable notification-group--${type}`,
+        { 'notification-group--unread': unread },
+      )}
+      tabIndex={0}
+    >
+      <div className='notification-group__icon'>
+        <Icon icon={icon} id={iconId} />
+      </div>
+
+      <div className='notification-group__main'>
+        <div className='notification-group__main__header'>
+          <div className='notification-group__main__header__wrapper'>
+            <AvatarGroup accountIds={accountIds} />
+
+            {actions}
+          </div>
+
+          <div className='notification-group__main__header__label'>
+            {label}
+            {timestamp && <RelativeTimestamp timestamp={timestamp} />}
+          </div>
+        </div>
+
+        {statusId && (
+          <div className='notification-group__main__status'>
+            <EmbeddedStatus statusId={statusId} />
+          </div>
+        )}
+      </div>
+    </div>
+  );
+};

app/javascript/mastodon/features/notifications_v2/components/notification_mention.tsx

@@ -0,0 +1,55 @@
+import { FormattedMessage } from 'react-intl';
+
+import ReplyIcon from '@/material-icons/400-24px/reply-fill.svg?react';
+import type { StatusVisibility } from 'mastodon/api_types/statuses';
+import type { NotificationGroupMention } from 'mastodon/models/notification_group';
+import { useAppSelector } from 'mastodon/store';
+
+import type { LabelRenderer } from './notification_group_with_status';
+import { NotificationWithStatus } from './notification_with_status';
+
+const labelRenderer: LabelRenderer = (values) => (
+  <FormattedMessage
+    id='notification.mention'
+    defaultMessage='{name} mentioned you'
+    values={values}
+  />
+);
+
+const privateMentionLabelRenderer: LabelRenderer = (values) => (
+  <FormattedMessage
+    id='notification.private_mention'
+    defaultMessage='{name} privately mentioned you'
+    values={values}
+  />
+);
+
+export const NotificationMention: React.FC<{
+  notification: NotificationGroupMention;
+  unread: boolean;
+}> = ({ notification, unread }) => {
+  const statusVisibility = useAppSelector(
+    (state) =>
+      state.statuses.getIn([
+        notification.statusId,
+        'visibility',
+      ]) as StatusVisibility,
+  );
+
+  return (
+    <NotificationWithStatus
+      type='mention'
+      icon={ReplyIcon}
+      iconId='reply'
+      accountIds={notification.sampleAccountIds}
+      count={notification.notifications_count}
+      statusId={notification.statusId}
+      labelRenderer={
+        statusVisibility === 'direct'
+          ? privateMentionLabelRenderer
+          : labelRenderer
+      }
+      unread={unread}
+    />
+  );
+};

app/javascript/mastodon/features/notifications_v2/components/notification_moderation_warning.tsx

@@ -0,0 +1,13 @@
+import { ModerationWarning } from 'mastodon/features/notifications/components/moderation_warning';
+import type { NotificationGroupModerationWarning } from 'mastodon/models/notification_group';
+
+export const NotificationModerationWarning: React.FC<{
+  notification: NotificationGroupModerationWarning;
+  unread: boolean;
+}> = ({ notification: { moderationWarning }, unread }) => (
+  <ModerationWarning
+    action={moderationWarning.action}
+    id={moderationWarning.id}
+    unread={unread}
+  />
+);

app/javascript/mastodon/features/notifications_v2/components/notification_poll.tsx

@@ -0,0 +1,41 @@
+import { FormattedMessage } from 'react-intl';
+
+import BarChart4BarsIcon from '@/material-icons/400-20px/bar_chart_4_bars.svg?react';
+import { me } from 'mastodon/initial_state';
+import type { NotificationGroupPoll } from 'mastodon/models/notification_group';
+
+import { NotificationWithStatus } from './notification_with_status';
+
+const labelRendererOther = () => (
+  <FormattedMessage
+    id='notification.poll'
+    defaultMessage='A poll you voted in has ended'
+  />
+);
+
+const labelRendererOwn = () => (
+  <FormattedMessage
+    id='notification.own_poll'
+    defaultMessage='Your poll has ended'
+  />
+);
+
+export const NotificationPoll: React.FC<{
+  notification: NotificationGroupPoll;
+  unread: boolean;
+}> = ({ notification, unread }) => (
+  <NotificationWithStatus
+    type='poll'
+    icon={BarChart4BarsIcon}
+    iconId='bar-chart-4-bars'
+    accountIds={notification.sampleAccountIds}
+    count={notification.notifications_count}
+    statusId={notification.statusId}
+    labelRenderer={
+      notification.sampleAccountIds[0] === me
+        ? labelRendererOwn
+        : labelRendererOther
+    }
+    unread={unread}
+  />
+);

app/javascript/mastodon/features/notifications_v2/components/notification_reblog.tsx

@@ -0,0 +1,45 @@
+import { FormattedMessage } from 'react-intl';
+
+import RepeatIcon from '@/material-icons/400-24px/repeat.svg?react';
+import type { NotificationGroupReblog } from 'mastodon/models/notification_group';
+import { useAppSelector } from 'mastodon/store';
+
+import type { LabelRenderer } from './notification_group_with_status';
+import { NotificationGroupWithStatus } from './notification_group_with_status';
+
+const labelRenderer: LabelRenderer = (values) => (
+  <FormattedMessage
+    id='notification.reblog'
+    defaultMessage='{name} boosted your status'
+    values={values}
+  />
+);
+
+export const NotificationReblog: React.FC<{
+  notification: NotificationGroupReblog;
+  unread: boolean;
+}> = ({ notification, unread }) => {
+  const { statusId } = notification;
+  const statusAccount = useAppSelector(
+    (state) =>
+      state.accounts.get(state.statuses.getIn([statusId, 'account']) as string)
+        ?.acct,
+  );
+
+  return (
+    <NotificationGroupWithStatus
+      type='reblog'
+      icon={RepeatIcon}
+      iconId='repeat'
+      accountIds={notification.sampleAccountIds}
+      statusId={notification.statusId}
+      timestamp={notification.latest_page_notification_at}
+      count={notification.notifications_count}
+      labelRenderer={labelRenderer}
+      labelSeeMoreHref={
+        statusAccount ? `/@${statusAccount}/${statusId}/reblogs` : undefined
+      }
+      unread={unread}
+    />
+  );
+};

app/javascript/mastodon/features/notifications_v2/components/notification_severed_relationships.tsx

@@ -0,0 +1,15 @@
+import { RelationshipsSeveranceEvent } from 'mastodon/features/notifications/components/relationships_severance_event';
+import type { NotificationGroupSeveredRelationships } from 'mastodon/models/notification_group';
+
+export const NotificationSeveredRelationships: React.FC<{
+  notification: NotificationGroupSeveredRelationships;
+  unread: boolean;
+}> = ({ notification: { event }, unread }) => (
+  <RelationshipsSeveranceEvent
+    type={event.type}
+    target={event.target_name}
+    followersCount={event.followers_count}
+    followingCount={event.following_count}
+    unread={unread}
+  />
+);

app/javascript/mastodon/features/notifications_v2/components/notification_status.tsx

@@ -0,0 +1,31 @@
+import { FormattedMessage } from 'react-intl';
+
+import NotificationsActiveIcon from '@/material-icons/400-24px/notifications_active-fill.svg?react';
+import type { NotificationGroupStatus } from 'mastodon/models/notification_group';
+
+import type { LabelRenderer } from './notification_group_with_status';
+import { NotificationWithStatus } from './notification_with_status';
+
+const labelRenderer: LabelRenderer = (values) => (
+  <FormattedMessage
+    id='notification.status'
+    defaultMessage='{name} just posted'
+    values={values}
+  />
+);
+
+export const NotificationStatus: React.FC<{
+  notification: NotificationGroupStatus;
+  unread: boolean;
+}> = ({ notification, unread }) => (
+  <NotificationWithStatus
+    type='status'
+    icon={NotificationsActiveIcon}
+    iconId='notifications-active'
+    accountIds={notification.sampleAccountIds}
+    count={notification.notifications_count}
+    statusId={notification.statusId}
+    labelRenderer={labelRenderer}
+    unread={unread}
+  />
+);

app/javascript/mastodon/features/notifications_v2/components/notification_update.tsx

@@ -0,0 +1,31 @@
+import { FormattedMessage } from 'react-intl';
+
+import EditIcon from '@/material-icons/400-24px/edit.svg?react';
+import type { NotificationGroupUpdate } from 'mastodon/models/notification_group';
+
+import type { LabelRenderer } from './notification_group_with_status';
+import { NotificationWithStatus } from './notification_with_status';
+
+const labelRenderer: LabelRenderer = (values) => (
+  <FormattedMessage
+    id='notification.update'
+    defaultMessage='{name} edited a post'
+    values={values}
+  />
+);
+
+export const NotificationUpdate: React.FC<{
+  notification: NotificationGroupUpdate;
+  unread: boolean;
+}> = ({ notification, unread }) => (
+  <NotificationWithStatus
+    type='update'
+    icon={EditIcon}
+    iconId='edit'
+    accountIds={notification.sampleAccountIds}
+    count={notification.notifications_count}
+    statusId={notification.statusId}
+    labelRenderer={labelRenderer}
+    unread={unread}
+  />
+);

app/javascript/mastodon/features/notifications_v2/components/notification_with_status.tsx

@@ -0,0 +1,73 @@
+import { useMemo } from 'react';
+
+import classNames from 'classnames';
+
+import type { IconProp } from 'mastodon/components/icon';
+import { Icon } from 'mastodon/components/icon';
+import Status from 'mastodon/containers/status_container';
+import { useAppSelector } from 'mastodon/store';
+
+import { NamesList } from './names_list';
+import type { LabelRenderer } from './notification_group_with_status';
+
+export const NotificationWithStatus: React.FC<{
+  type: string;
+  icon: IconProp;
+  iconId: string;
+  accountIds: string[];
+  statusId: string;
+  count: number;
+  labelRenderer: LabelRenderer;
+  unread: boolean;
+}> = ({
+  icon,
+  iconId,
+  accountIds,
+  statusId,
+  count,
+  labelRenderer,
+  type,
+  unread,
+}) => {
+  const label = useMemo(
+    () =>
+      labelRenderer({
+        name: <NamesList accountIds={accountIds} total={count} />,
+      }),
+    [labelRenderer, accountIds, count],
+  );
+
+  const isPrivateMention = useAppSelector(
+    (state) => state.statuses.getIn([statusId, 'visibility']) === 'direct',
+  );
+
+  return (
+    <div
+      role='button'
+      className={classNames(
+        `notification-ungrouped focusable notification-ungrouped--${type}`,
+        {
+          'notification-ungrouped--unread': unread,
+          'notification-ungrouped--direct': isPrivateMention,
+        },
+      )}
+      tabIndex={0}
+    >
+      <div className='notification-ungrouped__header'>
+        <div className='notification-ungrouped__header__icon'>
+          <Icon icon={icon} id={iconId} />
+        </div>
+        {label}
+      </div>
+
+      <Status
+        // @ts-expect-error -- <Status> is not yet typed
+        id={statusId}
+        contextType='notifications'
+        withDismiss
+        skipPrepend
+        avatarSize={40}
+      />
+    </div>
+  );
+};

app/javascript/mastodon/features/notifications_v2/filter_bar.tsx

@@ -0,0 +1,145 @@
+import type { PropsWithChildren } from 'react';
+import { useCallback } from 'react';
+
+import { defineMessages, FormattedMessage, useIntl } from 'react-intl';
+
+import HomeIcon from '@/material-icons/400-24px/home-fill.svg?react';
+import InsertChartIcon from '@/material-icons/400-24px/insert_chart.svg?react';
+import PersonAddIcon from '@/material-icons/400-24px/person_add.svg?react';
+import RepeatIcon from '@/material-icons/400-24px/repeat.svg?react';
+import ReplyAllIcon from '@/material-icons/400-24px/reply_all.svg?react';
+import StarIcon from '@/material-icons/400-24px/star.svg?react';
+import { setNotificationsFilter } from 'mastodon/actions/notification_groups';
+import { Icon } from 'mastodon/components/icon';
+import {
+  selectSettingsNotificationsQuickFilterActive,
+  selectSettingsNotificationsQuickFilterAdvanced,
+} from 'mastodon/selectors/settings';
+import { useAppDispatch, useAppSelector } from 'mastodon/store';
+
+const tooltips = defineMessages({
+  mentions: { id: 'notifications.filter.mentions', defaultMessage: 'Mentions' },
+  favourites: {
+    id: 'notifications.filter.favourites',
+    defaultMessage: 'Favorites',
+  },
+  boosts: { id: 'notifications.filter.boosts', defaultMessage: 'Boosts' },
+  polls: { id: 'notifications.filter.polls', defaultMessage: 'Poll results' },
+  follows: { id: 'notifications.filter.follows', defaultMessage: 'Follows' },
+  statuses: {
+    id: 'notifications.filter.statuses',
+    defaultMessage: 'Updates from people you follow',
+  },
+});
+
+const BarButton: React.FC<
+  PropsWithChildren<{
+    selectedFilter: string;
+    type: string;
+    title?: string;
+  }>
+> = ({ selectedFilter, type, title, children }) => {
+  const dispatch = useAppDispatch();
+
+  const onClick = useCallback(() => {
+    void dispatch(setNotificationsFilter({ filterType: type }));
+  }, [dispatch, type]);
+
+  return (
+    <button
+      className={selectedFilter === type ? 'active' : ''}
+      onClick={onClick}
+      title={title}
+    >
+      {children}
+    </button>
+  );
+};
+
+export const FilterBar: React.FC = () => {
+  const intl = useIntl();
+
+  const selectedFilter = useAppSelector(
+    selectSettingsNotificationsQuickFilterActive,
+  );
+  const advancedMode = useAppSelector(
+    selectSettingsNotificationsQuickFilterAdvanced,
+  );
+
+  if (advancedMode)
+    return (
+      <div className='notification__filter-bar'>
+        <BarButton selectedFilter={selectedFilter} type='all' key='all'>
+          <FormattedMessage
+            id='notifications.filter.all'
+            defaultMessage='All'
+          />
+        </BarButton>
+        <BarButton
+          selectedFilter={selectedFilter}
+          type='mention'
+          key='mention'
+          title={intl.formatMessage(tooltips.mentions)}
+        >
+          <Icon id='reply-all' icon={ReplyAllIcon} />
+        </BarButton>
+        <BarButton
+          selectedFilter={selectedFilter}
+          type='favourite'
+          key='favourite'
+          title={intl.formatMessage(tooltips.favourites)}
+        >
+          <Icon id='star' icon={StarIcon} />
+        </BarButton>
+        <BarButton
+          selectedFilter={selectedFilter}
+          type='reblog'
+          key='reblog'
+          title={intl.formatMessage(tooltips.boosts)}
+        >
+          <Icon id='retweet' icon={RepeatIcon} />
+        </BarButton>
+        <BarButton
+          selectedFilter={selectedFilter}
+          type='poll'
+          key='poll'
+          title={intl.formatMessage(tooltips.polls)}
+        >
+          <Icon id='tasks' icon={InsertChartIcon} />
+        </BarButton>
+        <BarButton
+          selectedFilter={selectedFilter}
+          type='status'
+          key='status'
+          title={intl.formatMessage(tooltips.statuses)}
+        >
+          <Icon id='home' icon={HomeIcon} />
+        </BarButton>
+        <BarButton
+          selectedFilter={selectedFilter}
+          type='follow'
+          key='follow'
+          title={intl.formatMessage(tooltips.follows)}
+        >
+          <Icon id='user-plus' icon={PersonAddIcon} />
+        </BarButton>
+      </div>
+    );
+  else
+    return (
+      <div className='notification__filter-bar'>
+        <BarButton selectedFilter={selectedFilter} type='all' key='all'>
+          <FormattedMessage
+            id='notifications.filter.all'
+            defaultMessage='All'
+          />
+        </BarButton>
+        <BarButton selectedFilter={selectedFilter} type='mention' key='mention'>
+          <FormattedMessage
+            id='notifications.filter.mentions'
+            defaultMessage='Mentions'
+          />
+        </BarButton>
+      </div>
+    );
+};

app/javascript/mastodon/features/notifications_v2/index.tsx

@@ -0,0 +1,354 @@
+import { useCallback, useEffect, useMemo, useRef } from 'react';
+
+import { defineMessages, FormattedMessage, useIntl } from 'react-intl';
+
+import { Helmet } from 'react-helmet';
+
+import { createSelector } from '@reduxjs/toolkit';
+
+import { useDebouncedCallback } from 'use-debounce';
+
+import DoneAllIcon from '@/material-icons/400-24px/done_all.svg?react';
+import NotificationsIcon from '@/material-icons/400-24px/notifications-fill.svg?react';
+import {
+  fetchNotificationsGap,
+  updateScrollPosition,
+  loadPending,
+  markNotificationsAsRead,
+  mountNotifications,
+  unmountNotifications,
+} from 'mastodon/actions/notification_groups';
+import { compareId } from 'mastodon/compare_id';
+import { Icon } from 'mastodon/components/icon';
+import { NotSignedInIndicator } from 'mastodon/components/not_signed_in_indicator';
+import { useIdentity } from 'mastodon/identity_context';
+import type { NotificationGap } from 'mastodon/reducers/notification_groups';
+import {
+  selectUnreadNotificationGroupsCount,
+  selectPendingNotificationGroupsCount,
+} from 'mastodon/selectors/notifications';
+import {
+  selectNeedsNotificationPermission,
+  selectSettingsNotificationsExcludedTypes,
+  selectSettingsNotificationsQuickFilterActive,
+  selectSettingsNotificationsQuickFilterShow,
+  selectSettingsNotificationsShowUnread,
+} from 'mastodon/selectors/settings';
+import { useAppDispatch, useAppSelector } from 'mastodon/store';
+import type { RootState } from 'mastodon/store';
+
+import { addColumn, removeColumn, moveColumn } from '../../actions/columns';
+import { submitMarkers } from '../../actions/markers';
+import Column from '../../components/column';
+import { ColumnHeader } from '../../components/column_header';
+import { LoadGap } from '../../components/load_gap';
+import ScrollableList from '../../components/scrollable_list';
+import { FilteredNotificationsBanner } from '../notifications/components/filtered_notifications_banner';
+import NotificationsPermissionBanner from '../notifications/components/notifications_permission_banner';
+import ColumnSettingsContainer from '../notifications/containers/column_settings_container';
+
+import { NotificationGroup } from './components/notification_group';
+import { FilterBar } from './filter_bar';
+
+const messages = defineMessages({
+  title: { id: 'column.notifications', defaultMessage: 'Notifications' },
+  markAsRead: {
+    id: 'notifications.mark_as_read',
+    defaultMessage: 'Mark every notification as read',
+  },
+});
+
+const getNotifications = createSelector(
+  [
+    selectSettingsNotificationsQuickFilterShow,
+    selectSettingsNotificationsQuickFilterActive,
+    selectSettingsNotificationsExcludedTypes,
+    (state: RootState) => state.notificationGroups.groups,
+  ],
+  (showFilterBar, allowedType, excludedTypes, notifications) => {
+    if (!showFilterBar || allowedType === 'all') {
+      // used if user changed the notification settings after loading the notifications from the server
+      // otherwise a list of notifications will come pre-filtered from the backend
+      // we need to turn it off for FilterBar in order not to block ourselves from seeing a specific category
+      return notifications.filter(
+        (item) => item.type === 'gap' || !excludedTypes.includes(item.type),
+      );
+    }
+    return notifications.filter(
+      (item) => item.type === 'gap' || allowedType === item.type,
+    );
+  },
+);
+
+export const Notifications: React.FC<{
+  columnId?: string;
+  multiColumn?: boolean;
+}> = ({ columnId, multiColumn }) => {
+  const intl = useIntl();
+  const notifications = useAppSelector(getNotifications);
+  const dispatch = useAppDispatch();
+  const isLoading = useAppSelector((s) => s.notificationGroups.isLoading);
+  const hasMore = notifications.at(-1)?.type === 'gap';
+
+  const lastReadId = useAppSelector((s) =>
+    selectSettingsNotificationsShowUnread(s)
+      ? s.notificationGroups.lastReadId
+      : '0',
+  );
+
+  const numPending = useAppSelector(selectPendingNotificationGroupsCount);
+
+  const unreadNotificationsCount = useAppSelector(
+    selectUnreadNotificationGroupsCount,
+  );
+
+  const isUnread = unreadNotificationsCount > 0;
+
+  const canMarkAsRead =
+    useAppSelector(selectSettingsNotificationsShowUnread) &&
+    unreadNotificationsCount > 0;
+
+  const needsNotificationPermission = useAppSelector(
+    selectNeedsNotificationPermission,
+  );
+
+  const columnRef = useRef<Column>(null);
+
+  const selectChild = useCallback((index: number, alignTop: boolean) => {
+    const container = columnRef.current?.node as HTMLElement | undefined;
+
+    if (!container) return;
+
+    const element = container.querySelector<HTMLElement>(
+      `article:nth-of-type(${index + 1}) .focusable`,
+    );
+
+    if (element) {
+      if (alignTop && container.scrollTop > element.offsetTop) {
+        element.scrollIntoView(true);
+      } else if (
+        !alignTop &&
+        container.scrollTop + container.clientHeight <
+          element.offsetTop + element.offsetHeight
+      ) {
+        element.scrollIntoView(false);
+      }
+      element.focus();
+    }
+  }, []);
+
+  // Keep track of mounted components for unread notification handling
+  useEffect(() => {
+    dispatch(mountNotifications());
+
+    return () => {
+      dispatch(unmountNotifications());
+      dispatch(updateScrollPosition({ top: false }));
+    };
+  }, [dispatch]);
+
+  const handleLoadGap = useCallback(
+    (gap: NotificationGap) => {
+      void dispatch(fetchNotificationsGap({ gap }));
+    },
+    [dispatch],
+  );
+
+  const handleLoadOlder = useDebouncedCallback(
+    () => {
+      const gap = notifications.at(-1);
+      if (gap?.type === 'gap') void dispatch(fetchNotificationsGap({ gap }));
+    },
+    300,
+    { leading: true },
+  );
+
+  const handleLoadPending = useCallback(() => {
+    dispatch(loadPending());
+  }, [dispatch]);
+
+  const handleScrollToTop = useDebouncedCallback(() => {
+    dispatch(updateScrollPosition({ top: true }));
+  }, 100);
+
+  const handleScroll = useDebouncedCallback(() => {
+    dispatch(updateScrollPosition({ top: false }));
+  }, 100);
+
+  useEffect(() => {
+    return () => {
+      handleLoadOlder.cancel();
+      handleScrollToTop.cancel();
+      handleScroll.cancel();
+    };
+  }, [handleLoadOlder, handleScrollToTop, handleScroll]);
+
+  const handlePin = useCallback(() => {
+    if (columnId) {
+      dispatch(removeColumn(columnId));
+    } else {
+      dispatch(addColumn('NOTIFICATIONS', {}));
+    }
+  }, [columnId, dispatch]);
+
+  const handleMove = useCallback(
+    (dir: unknown) => {
+      dispatch(moveColumn(columnId, dir));
+    },
+    [dispatch, columnId],
+  );
+
+  const handleHeaderClick = useCallback(() => {
+    columnRef.current?.scrollTop();
+  }, []);
+
+  const handleMoveUp = useCallback(
+    (id: string) => {
+      const elementIndex =
+        notifications.findIndex(
+          (item) => item.type !== 'gap' && item.group_key === id,
+        ) - 1;
+      selectChild(elementIndex, true);
+    },
+    [notifications, selectChild],
+  );
+
+  const handleMoveDown = useCallback(
+    (id: string) => {
+      const elementIndex =
+        notifications.findIndex(
+          (item) => item.type !== 'gap' && item.group_key === id,
+        ) + 1;
+      selectChild(elementIndex, false);
+    },
+    [notifications, selectChild],
+  );
+
+  const handleMarkAsRead = useCallback(() => {
+    dispatch(markNotificationsAsRead());
+    void dispatch(submitMarkers({ immediate: true }));
+  }, [dispatch]);
+
+  const pinned = !!columnId;
+  const emptyMessage = (
+    <FormattedMessage
+      id='empty_column.notifications'
+      defaultMessage="You don't have any notifications yet. When other people interact with you, you will see it here."
+    />
+  );
+
+  const { signedIn } = useIdentity();
+
+  const filterBar = signedIn ? <FilterBar /> : null;
+
+  const scrollableContent = useMemo(() => {
+    if (notifications.length === 0 && !hasMore) return null;
+
+    return notifications.map((item) =>
+      item.type === 'gap' ? (
+        <LoadGap
+          key={`${item.maxId}-${item.sinceId}`}
+          disabled={isLoading}
+          param={item}
+          onClick={handleLoadGap}
+        />
+      ) : (
+        <NotificationGroup
+          key={item.group_key}
+          notificationGroupId={item.group_key}
+          onMoveUp={handleMoveUp}
+          onMoveDown={handleMoveDown}
+          unread={
+            lastReadId !== '0' &&
+            !!item.page_max_id &&
+            compareId(item.page_max_id, lastReadId) > 0
+          }
+        />
+      ),
+    );
+  }, [
+    notifications,
+    isLoading,
+    hasMore,
+    lastReadId,
+    handleLoadGap,
+    handleMoveUp,
+    handleMoveDown,
+  ]);
+
+  const prepend = (
+    <>
+      {needsNotificationPermission && <NotificationsPermissionBanner />}
+      <FilteredNotificationsBanner />
+    </>
+  );
+
+  const scrollContainer = signedIn ? (
+    <ScrollableList
+      scrollKey={`notifications-${columnId}`}
+      trackScroll={!pinned}
+      isLoading={isLoading}
+      showLoading={isLoading && notifications.length === 0}
+      hasMore={hasMore}
+      numPending={numPending}
+      prepend={prepend}
+      alwaysPrepend
+      emptyMessage={emptyMessage}
+      onLoadMore={handleLoadOlder}
+      onLoadPending={handleLoadPending}
+      onScrollToTop={handleScrollToTop}
+      onScroll={handleScroll}
+      bindToDocument={!multiColumn}
+    >
+      {scrollableContent}
+    </ScrollableList>
+  ) : (
+    <NotSignedInIndicator />
+  );
+
+  const extraButton = canMarkAsRead ? (
+    <button
+      aria-label={intl.formatMessage(messages.markAsRead)}
+      title={intl.formatMessage(messages.markAsRead)}
+      onClick={handleMarkAsRead}
+      className='column-header__button'
+    >
+      <Icon id='done-all' icon={DoneAllIcon} />
+    </button>
+  ) : null;
+
+  return (
+    <Column
+      bindToDocument={!multiColumn}
+      ref={columnRef}
+      label={intl.formatMessage(messages.title)}
+    >
+      <ColumnHeader
+        icon='bell'
+        iconComponent={NotificationsIcon}
+        active={isUnread}
+        title={intl.formatMessage(messages.title)}
+        onPin={handlePin}
+        onMove={handleMove}
+        onClick={handleHeaderClick}
+        pinned={pinned}
+        multiColumn={multiColumn}
+        extraButton={extraButton}
+      >
+        <ColumnSettingsContainer />
+      </ColumnHeader>
+
+      {filterBar}
+
+      {scrollContainer}
+
+      <Helmet>
+        <title>{intl.formatMessage(messages.title)}</title>
+        <meta name='robots' content='noindex' />
+      </Helmet>
+    </Column>
+  );
+};
+
+// eslint-disable-next-line import/no-default-export
+export default Notifications;