Remove navigation links to /explore when trends are disabled (#19415)

* Remove navigation links to /explore when trends are disabled

* Do not display trends interface when trends are disabled

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

@@ -12,6 +12,7 @@ import Suggestions from './suggestions';
 import Search from 'mastodon/features/compose/containers/search_container';
 import SearchResults from './results';
 import { Helmet } from 'react-helmet';
+import { showTrends } from 'mastodon/initial_state';
 
 const messages = defineMessages({
   title: { id: 'explore.title', defaultMessage: 'Explore' },
@@ -20,7 +21,7 @@ const messages = defineMessages({
 
 const mapStateToProps = state => ({
   layout: state.getIn(['meta', 'layout']),
-  isSearching: state.getIn(['search', 'submitted']),
+  isSearching: state.getIn(['search', 'submitted']) || !showTrends,
 });
 
 export default @connect(mapStateToProps)

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

@@ -95,7 +95,15 @@ class GettingStarted extends ImmutablePureComponent {
 
     navItems.push(
       <ColumnSubheading key='header-discover' text={intl.formatMessage(messages.discover)} />,
-      <ColumnLink key='explore' icon='hashtag' text={intl.formatMessage(messages.explore)} to='/explore' />,
+    );
+
+    if (showTrends) {
+      navItems.push(
+        <ColumnLink key='explore' icon='hashtag' text={intl.formatMessage(messages.explore)} to='/explore' />,
+      );
+    }
+
+    navItems.push(
       <ColumnLink key='community_timeline' icon='users' text={intl.formatMessage(messages.community_timeline)} to='/public/local' />,
       <ColumnLink key='public_timeline' icon='globe' text={intl.formatMessage(messages.public_timeline)} to='/public' />,
     );

app/javascript/mastodon/features/ui/components/navigation_panel.js

@@ -3,7 +3,7 @@ import PropTypes from 'prop-types';
 import { defineMessages, injectIntl } from 'react-intl';
 import { Link } from 'react-router-dom';
 import Logo from 'mastodon/components/logo';
-import { timelinePreview } from 'mastodon/initial_state';
+import { timelinePreview, showTrends } from 'mastodon/initial_state';
 import ColumnLink from './column_link';
 import FollowRequestsColumnLink from './follow_requests_column_link';
 import ListPanel from './list_panel';
@@ -24,6 +24,7 @@ const messages = defineMessages({
   preferences: { id: 'navigation_bar.preferences', defaultMessage: 'Preferences' },
   followsAndFollowers: { id: 'navigation_bar.follows_and_followers', defaultMessage: 'Follows and followers' },
   about: { id: 'navigation_bar.about', defaultMessage: 'About' },
+  search: { id: 'navigation_bar.search', defaultMessage: 'Search' },
 });
 
 export default @injectIntl
@@ -57,7 +58,12 @@ class NavigationPanel extends React.Component {
           </React.Fragment>
         )}
 
-        <ColumnLink transparent to='/explore' icon='hashtag' text={intl.formatMessage(messages.explore)} />
+        {showTrends ? (
+          <ColumnLink transparent to='/explore' icon='hashtag' text={intl.formatMessage(messages.explore)} />
+        ) : (
+          <ColumnLink transparent to='/search' icon='search' text={intl.formatMessage(messages.search)} />
+        )}
+
         {(signedIn || timelinePreview) && (
           <>
             <ColumnLink transparent to='/public/local' icon='users' text={intl.formatMessage(messages.local)} />