Add unread notifications badge to the mobile navbar

app/javascript/flavours/glitch/features/ui/components/tabs_bar.js

@@ -4,10 +4,32 @@ import { NavLink, withRouter } from 'react-router-dom';
 import { FormattedMessage, injectIntl } from 'react-intl';
 import { debounce } from 'lodash';
 import { isUserTouching } from 'flavours/glitch/util/is_mobile';
+import { connect } from 'react-redux';
+
+const mapStateToProps = state => ({
+  unreadNotifications: state.getIn(['notifications', 'unread']),
+});
+
+@connect(mapStateToProps)
+class NotificationsIcon extends React.PureComponent {
+  static propTypes = {
+    unreadNotifications: PropTypes.number,
+  };
+
+  render() {
+    const { unreadNotifications } = this.props;
+    return (
+      <span className='icon-badge-wrapper'>
+        <i className='fa fa-fw fa-bell' />
+        { unreadNotifications > 0 && <div className='icon-badge' />}
+      </span>
+    );
+  }
+}
 
 export const links = [
   <NavLink className='tabs-bar__link primary' to='/timelines/home' data-preview-title-id='column.home' data-preview-icon='home' ><i className='fa fa-fw fa-home' /><FormattedMessage id='tabs_bar.home' defaultMessage='Home' /></NavLink>,
-  <NavLink className='tabs-bar__link primary' to='/notifications' data-preview-title-id='column.notifications' data-preview-icon='bell' ><i className='fa fa-fw fa-bell' /><FormattedMessage id='tabs_bar.notifications' defaultMessage='Notifications' /></NavLink>,
+  <NavLink className='tabs-bar__link primary' to='/notifications' data-preview-title-id='column.notifications' data-preview-icon='bell' ><NotificationsIcon /><FormattedMessage id='tabs_bar.notifications' defaultMessage='Notifications' /></NavLink>,
 
   <NavLink className='tabs-bar__link secondary' to='/timelines/public/local' data-preview-title-id='column.community' data-preview-icon='users' ><i className='fa fa-fw fa-users' /><FormattedMessage id='tabs_bar.local_timeline' defaultMessage='Local' /></NavLink>,
   <NavLink className='tabs-bar__link secondary' exact to='/timelines/public' data-preview-title-id='column.public' data-preview-icon='globe' ><i className='fa fa-fw fa-globe' /><FormattedMessage id='tabs_bar.federated_timeline' defaultMessage='Federated' /></NavLink>,

app/javascript/flavours/glitch/styles/components/index.scss

@@ -571,7 +571,7 @@
     }
   }
 
-  span {
+  span:last-child {
     margin-left: 5px;
     display: none;
   }