Composer Quote UI (#35805)

Co-authored-by: diondiondion <mail@diondiondion.com>

app/javascript/mastodon/features/compose/components/compose_form.jsx

@@ -31,6 +31,7 @@ import { PollForm } from "./poll_form";
 import { ReplyIndicator } from './reply_indicator';
 import { UploadForm } from './upload_form';
 import { Warning } from './warning';
+import { ComposeQuotedStatus } from './quoted_post';
 
 const allowedAroundShortCode = '><\u0085\u0020\u00a0\u1680\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200a\u202f\u205f\u3000\u2028\u2029\u0009\u000a\u000b\u000c\u000d';
 
@@ -304,10 +305,12 @@ class ComposeForm extends ImmutablePureComponent {
             onPaste={onPaste}
             autoFocus={autoFocus}
             lang={this.props.lang}
+            className='compose-form__input'
           />
 
           <UploadForm />
           <PollForm />
+          <ComposeQuotedStatus />
 
           <div className='compose-form__footer'>
             <div className='compose-form__actions'>

app/javascript/mastodon/features/compose/components/quoted_post.tsx

@@ -0,0 +1,27 @@
+import { useMemo } from 'react';
+import type { FC } from 'react';
+
+import { Map } from 'immutable';
+
+import { QuotedStatus } from '@/mastodon/components/status_quoted';
+import { useAppSelector } from '@/mastodon/store';
+
+export const ComposeQuotedStatus: FC = () => {
+  const quotedStatusId = useAppSelector(
+    (state) => state.compose.get('quoted_status_id') as string | null,
+  );
+  const quote = useMemo(
+    () =>
+      quotedStatusId
+        ? Map<'state' | 'quoted_status', string>([
+            ['state', 'accepted'],
+            ['quoted_status', quotedStatusId],
+          ])
+        : null,
+    [quotedStatusId],
+  );
+  if (!quote) {
+    return null;
+  }
+  return <QuotedStatus quote={quote} contextType='compose' />;
+};