Give focused status a sensible aria-label for screen readers (#8387)

* Give focused status a sensible aria-label for screen readers

Fix #8192

* Use content warning in aria-label unless expanded

app/javascript/mastodon/components/status.js

@@ -8,7 +8,7 @@ import DisplayName from './display_name';
 import StatusContent from './status_content';
 import StatusActionBar from './status_action_bar';
 import AttachmentList from './attachment_list';
-import { FormattedMessage } from 'react-intl';
+import { injectIntl, FormattedMessage } from 'react-intl';
 import ImmutablePureComponent from 'react-immutable-pure-component';
 import { MediaGallery, Video } from '../features/ui/util/async-components';
 import { HotKeys } from 'react-hotkeys';
@@ -18,6 +18,24 @@ import classNames from 'classnames';
 // to use the progress bar to show download progress
 import Bundle from '../features/ui/components/bundle';
 
+export const textForScreenReader = (intl, status, rebloggedByText = false, expanded = false) => {
+  const displayName = status.getIn(['account', 'display_name']);
+
+  const values = [
+    displayName.length === 0 ? status.getIn(['account', 'acct']).split('@')[0] : displayName,
+    status.get('spoiler_text') && !expanded ? status.get('spoiler_text') : status.get('search_index').slice(status.get('spoiler_text').length),
+    intl.formatDate(status.get('created_at'), { hour: '2-digit', minute: '2-digit', month: 'short', day: 'numeric' }),
+    status.getIn(['account', 'acct']),
+  ];
+
+  if (rebloggedByText) {
+    values.push(rebloggedByText);
+  }
+
+  return values.join(', ');
+};
+
+@injectIntl
 export default class Status extends ImmutablePureComponent {
 
   static contextTypes = {
@@ -138,9 +156,9 @@ export default class Status extends ImmutablePureComponent {
 
   render () {
     let media = null;
-    let statusAvatar, prepend;
+    let statusAvatar, prepend, rebloggedByText;
 
-    const { hidden, featured } = this.props;
+    const { intl, hidden, featured } = this.props;
 
     let { status, account, ...other } = this.props;
 
@@ -189,6 +207,8 @@ export default class Status extends ImmutablePureComponent {
         </div>
       );
 
+      rebloggedByText = intl.formatMessage({ id: 'status.reblogged_by', defaultMessage: '{name} boosted' }, { name: status.getIn(['account', 'acct']) });
+
       account = status.get('account');
       status  = status.get('reblog');
     }
@@ -248,7 +268,7 @@ export default class Status extends ImmutablePureComponent {
 
     return (
       <HotKeys handlers={handlers}>
-        <div className={classNames('status__wrapper', `status__wrapper-${status.get('visibility')}`, { focusable: !this.props.muted })} tabIndex={this.props.muted ? null : 0} data-featured={featured ? 'true' : null}>
+        <div className={classNames('status__wrapper', `status__wrapper-${status.get('visibility')}`, { focusable: !this.props.muted })} tabIndex={this.props.muted ? null : 0} data-featured={featured ? 'true' : null} aria-label={textForScreenReader(intl, status, rebloggedByText, !status.get('hidden'))}>
           {prepend}
 
           <div className={classNames('status', `status-${status.get('visibility')}`, { muted: this.props.muted })} data-id={status.get('id')}>

app/javascript/mastodon/features/status/index.js

@@ -43,6 +43,7 @@ import ImmutablePureComponent from 'react-immutable-pure-component';
 import { HotKeys } from 'react-hotkeys';
 import { boostModal, deleteModal } from '../../initial_state';
 import { attachFullscreenListener, detachFullscreenListener, isFullscreen } from '../ui/util/fullscreen';
+import { textForScreenReader } from '../../components/status';
 
 const messages = defineMessages({
   deleteConfirm: { id: 'confirmations.delete.confirm', defaultMessage: 'Delete' },
@@ -418,7 +419,7 @@ export default class Status extends ImmutablePureComponent {
             {ancestors}
 
             <HotKeys handlers={handlers}>
-              <div className='focusable' tabIndex='0'>
+              <div className='focusable' tabIndex='0' aria-label={textForScreenReader(intl, status, false, !status.get('hidden'))}>
                 <DetailedStatus
                   status={status}
                   onOpenVideo={this.handleOpenVideo}