Add featured tags selector for WebUI (#19358)

* Add featured tags selector for WebUI

* Add title to tag count

app/javascript/mastodon/features/account/components/featured_tags.js

@@ -0,0 +1,71 @@
+import React from 'react';
+import { connect } from 'react-redux';
+import PropTypes from 'prop-types';
+import ImmutablePropTypes from 'react-immutable-proptypes';
+import ImmutablePureComponent from 'react-immutable-pure-component';
+import { defineMessages, injectIntl } from 'react-intl';
+import classNames from 'classnames';
+import Permalink from 'mastodon/components/permalink';
+import ShortNumber from 'mastodon/components/short_number';
+import { List as ImmutableList } from 'immutable';
+
+const messages = defineMessages({
+  hashtag_all: { id: 'account.hashtag_all', defaultMessage: 'All' },
+  hashtag_all_description: { id: 'account.hashtag_all_description', defaultMessage: 'All posts (deselect hashtags)' },
+  hashtag_select_description: { id: 'account.hashtag_select_description', defaultMessage: 'Select hashtag #{name}' },
+  statuses_counter: { id: 'account.statuses_counter', defaultMessage: '{count, plural, one {{counter} Post} other {{counter} Posts}}' },
+});
+
+const mapStateToProps = (state, { account }) => ({
+  featuredTags: state.getIn(['user_lists', 'featured_tags', account.get('id'), 'items'], ImmutableList()),
+});
+
+export default @connect(mapStateToProps)
+@injectIntl
+class FeaturedTags extends ImmutablePureComponent {
+
+  static contextTypes = {
+    router: PropTypes.object,
+  };
+
+  static propTypes = {
+    account: ImmutablePropTypes.map,
+    featuredTags: ImmutablePropTypes.list,
+    tagged: PropTypes.string,
+    intl: PropTypes.object.isRequired,
+  };
+
+  render () {
+    const { account, featuredTags, tagged, intl } = this.props;
+
+    if (!account || featuredTags.isEmpty()) {
+      return null;
+    }
+
+    const suspended = account.get('suspended');
+
+    return (
+      <div className={classNames('account__header', 'advanced', { inactive: !!account.get('moved') })}>
+        <div className='account__header__extra'>
+          <div className='account__header__extra__hashtag-links'>
+            <Permalink key='all' className={classNames('account__hashtag-link', { active: !tagged })} title={intl.formatMessage(messages.hashtag_all_description)} href={account.get('url')} to={`/@${account.get('acct')}`}>{intl.formatMessage(messages.hashtag_all)}</Permalink>
+            {!suspended && featuredTags.map(featuredTag => {
+              const name  = featuredTag.get('name');
+              const url   = featuredTag.get('url');
+              const to    = `/@${account.get('acct')}/tagged/${name}`;
+              const desc  = intl.formatMessage(messages.hashtag_select_description, { name });
+              const count = featuredTag.get('statuses_count');
+
+              return (
+                <Permalink key={`#${name}`} className={classNames('account__hashtag-link', { active: this.context.router.history.location.pathname === to })} title={desc} href={url} to={to}>
+                  #{name} <span title={intl.formatMessage(messages.statuses_counter, { count: count, counter: intl.formatNumber(count) })}>({<ShortNumber value={count} />})</span>
+                </Permalink>
+              );
+            })}
+          </div>
+        </div>
+      </div>
+    );
+  }
+
+}