Add responsive panels to the single-column layout (#10820)

* Add responsive panels to the single-column layout

* Fixes

* Fix not being able to save the preference

* Fix code style issues

* Set max-height on the compose textarea and add a link to relationship manager

26 files changed, 440 insertions, 133 deletions

diff --git a/app/controllers/settings/preferences_controller.rb b/app/controllers/settings/preferences_controller.rb
index 483af2c16..216fea636 100644
--- a/app/controllers/settings/preferences_controller.rb
+++ b/app/controllers/settings/preferences_controller.rb
@@ -1,6 +1,10 @@
 # frozen_string_literal: true
 
 class Settings::PreferencesController < Settings::BaseController
+  layout 'admin'
+
+  before_action :authenticate_user!
+
   def show; end
 
   def update
@@ -80,6 +84,9 @@ class Settings::PreferencesController < Settings::BaseController
       :setting_aggregate_reblogs,
       :setting_show_application,
       :setting_default_content_type,
+
+      :setting_theme,
+      :setting_advanced_layout,
       notification_emails: %i(follow follow_request reblog favourite mention digest report pending_account),
       interactions: %i(must_be_follower must_be_following)
     )
diff --git a/app/javascript/mastodon/actions/compose.js b/app/javascript/mastodon/actions/compose.js
index 94062f2be..33e631364 100644
--- a/app/javascript/mastodon/actions/compose.js
+++ b/app/javascript/mastodon/actions/compose.js
@@ -63,6 +63,14 @@ const messages = defineMessages({
   uploadErrorPoll:  { id: 'upload_error.poll', defaultMessage: 'File upload not allowed with polls.' },
 });
 
+const COMPOSE_PANEL_BREAKPOINT = 600 + (285 * 1) + (10 * 3);
+
+export const ensureComposeIsVisible = (getState, routerHistory) => {
+  if (!getState().getIn(['compose', 'mounted']) && window.innerWidth < COMPOSE_PANEL_BREAKPOINT) {
+    routerHistory.push('/statuses/new');
+  }
+};
+
 export function changeCompose(text) {
   return {
     type: COMPOSE_CHANGE,
@@ -77,9 +85,7 @@ export function replyCompose(status, routerHistory) {
       status: status,
     });
 
-    if (!getState().getIn(['compose', 'mounted'])) {
-      routerHistory.push('/statuses/new');
-    }
+    ensureComposeIsVisible(getState, routerHistory);
   };
 };
 
@@ -102,9 +108,7 @@ export function mentionCompose(account, routerHistory) {
       account: account,
     });
 
-    if (!getState().getIn(['compose', 'mounted'])) {
-      routerHistory.push('/statuses/new');
-    }
+    ensureComposeIsVisible(getState, routerHistory);
   };
 };
 
@@ -115,9 +119,7 @@ export function directCompose(account, routerHistory) {
       account: account,
     });
 
-    if (!getState().getIn(['compose', 'mounted'])) {
-      routerHistory.push('/statuses/new');
-    }
+    ensureComposeIsVisible(getState, routerHistory);
   };
 };
 
diff --git a/app/javascript/mastodon/actions/statuses.js b/app/javascript/mastodon/actions/statuses.js
index 3916b9ac1..06a19afc3 100644
--- a/app/javascript/mastodon/actions/statuses.js
+++ b/app/javascript/mastodon/actions/statuses.js
@@ -4,6 +4,7 @@ import { evictStatus } from '../storage/modifier';
 
 import { deleteFromTimelines } from './timelines';
 import { importFetchedStatus, importFetchedStatuses, importAccount, importStatus } from './importer';
+import { ensureComposeIsVisible } from './compose';
 
 export const STATUS_FETCH_REQUEST = 'STATUS_FETCH_REQUEST';
 export const STATUS_FETCH_SUCCESS = 'STATUS_FETCH_SUCCESS';
@@ -139,7 +140,7 @@ export function redraft(status, raw_text) {
   };
 };
 
-export function deleteStatus(id, router, withRedraft = false) {
+export function deleteStatus(id, routerHistory, withRedraft = false) {
   return (dispatch, getState) => {
     let status = getState().getIn(['statuses', id]);
 
@@ -156,10 +157,7 @@ export function deleteStatus(id, router, withRedraft = false) {
 
       if (withRedraft) {
         dispatch(redraft(status, response.data.text));
-
-        if (!getState().getIn(['compose', 'mounted'])) {
-          router.push('/statuses/new');
-        }
+        ensureComposeIsVisible(getState, routerHistory);
       }
     }).catch(error => {
       dispatch(deleteStatusFail(id, error));
diff --git a/app/javascript/mastodon/components/autosuggest_input.js b/app/javascript/mastodon/components/autosuggest_input.js
index 4b4aa8f0e..c7d965b53 100644
--- a/app/javascript/mastodon/components/autosuggest_input.js
+++ b/app/javascript/mastodon/components/autosuggest_input.js
@@ -49,7 +49,7 @@ export default class AutosuggestInput extends ImmutablePureComponent {
     autoFocus: PropTypes.bool,
     className: PropTypes.string,
     id: PropTypes.string,
-    searchTokens: ImmutablePropTypes.list,
+    searchTokens: PropTypes.arrayOf(PropTypes.string),
     maxLength: PropTypes.number,
   };
 
diff --git a/app/javascript/mastodon/features/compose/components/action_bar.js b/app/javascript/mastodon/features/compose/components/action_bar.js
index 95d6eeb06..077226d70 100644
--- a/app/javascript/mastodon/features/compose/components/action_bar.js
+++ b/app/javascript/mastodon/features/compose/components/action_bar.js
@@ -46,7 +46,7 @@ class ActionBar extends React.PureComponent {
     return (
       <div className='compose__action-bar'>
         <div className='compose__action-bar-dropdown'>
-          <DropdownMenuContainer items={menu} icon='ellipsis-v' size={24} direction='right' />
+          <DropdownMenuContainer items={menu} icon='chevron-down' size={16} direction='right' />
         </div>
       </div>
     );
diff --git a/app/javascript/mastodon/features/compose/components/navigation_bar.js b/app/javascript/mastodon/features/compose/components/navigation_bar.js
index 9910eb4f9..d8d49cb95 100644
--- a/app/javascript/mastodon/features/compose/components/navigation_bar.js
+++ b/app/javascript/mastodon/features/compose/components/navigation_bar.js
@@ -20,7 +20,7 @@ export default class NavigationBar extends ImmutablePureComponent {
       <div className='navigation-bar'>
         <Permalink href={this.props.account.get('url')} to={`/accounts/${this.props.account.get('id')}`}>
           <span style={{ display: 'none' }}>{this.props.account.get('acct')}</span>
-          <Avatar account={this.props.account} size={40} />
+          <Avatar account={this.props.account} size={48} />
         </Permalink>
 
         <div className='navigation-bar__profile'>
diff --git a/app/javascript/mastodon/features/compose/components/search.js b/app/javascript/mastodon/features/compose/components/search.js
index 774658b1b..6833c43ef 100644
--- a/app/javascript/mastodon/features/compose/components/search.js
+++ b/app/javascript/mastodon/features/compose/components/search.js
@@ -47,6 +47,10 @@ class SearchPopout extends React.PureComponent {
 export default @injectIntl
 class Search extends React.PureComponent {
 
+  static contextTypes = {
+    router: PropTypes.object.isRequired,
+  };
+
   static propTypes = {
     value: PropTypes.string.isRequired,
     submitted: PropTypes.bool,
@@ -54,6 +58,7 @@ class Search extends React.PureComponent {
     onSubmit: PropTypes.func.isRequired,
     onClear: PropTypes.func.isRequired,
     onShow: PropTypes.func.isRequired,
+    openInRoute: PropTypes.bool,
     intl: PropTypes.object.isRequired,
   };
 
@@ -76,7 +81,12 @@ class Search extends React.PureComponent {
   handleKeyUp = (e) => {
     if (e.key === 'Enter') {
       e.preventDefault();
+
       this.props.onSubmit();
+
+      if (this.props.openInRoute) {
+        this.context.router.history.push('/search');
+      }
     } else if (e.key === 'Escape') {
       document.querySelector('.ui').parentElement.focus();
     }
diff --git a/app/javascript/mastodon/features/getting_started/index.js b/app/javascript/mastodon/features/getting_started/index.js
index a671578a0..cb3efb57b 100644
--- a/app/javascript/mastodon/features/getting_started/index.js
+++ b/app/javascript/mastodon/features/getting_started/index.js
@@ -9,12 +9,10 @@ import ImmutablePropTypes from 'react-immutable-proptypes';
 import ImmutablePureComponent from 'react-immutable-pure-component';
 import { me, invitesEnabled, version, profile_directory, repository, source_url } from '../../initial_state';
 import { fetchFollowRequests } from 'mastodon/actions/accounts';
-import { changeSetting } from 'mastodon/actions/settings';
 import { List as ImmutableList } from 'immutable';
 import { Link } from 'react-router-dom';
 import NavigationBar from '../compose/components/navigation_bar';
 import Icon from 'mastodon/components/icon';
-import Toggle from 'react-toggle';
 
 const messages = defineMessages({
   home_timeline: { id: 'tabs_bar.home', defaultMessage: 'Home' },
@@ -41,12 +39,10 @@ const messages = defineMessages({
 const mapStateToProps = state => ({
   myAccount: state.getIn(['accounts', me]),
   unreadFollowRequests: state.getIn(['user_lists', 'follow_requests', 'items'], ImmutableList()).size,
-  forceSingleColumn: state.getIn(['settings', 'forceSingleColumn'], false),
 });
 
 const mapDispatchToProps = dispatch => ({
   fetchFollowRequests: () => dispatch(fetchFollowRequests()),
-  changeForceSingleColumn: checked => dispatch(changeSetting(['forceSingleColumn'], checked)),
 });
 
 const badgeDisplay = (number, limit) => {
@@ -71,8 +67,6 @@ class GettingStarted extends ImmutablePureComponent {
     fetchFollowRequests: PropTypes.func.isRequired,
     unreadFollowRequests: PropTypes.number,
     unreadNotifications: PropTypes.number,
-    forceSingleColumn: PropTypes.bool,
-    changeForceSingleColumn: PropTypes.func.isRequired,
   };
 
   componentDidMount () {
@@ -83,12 +77,8 @@ class GettingStarted extends ImmutablePureComponent {
     }
   }
 
-  handleForceSingleColumnChange = ({ target }) => {
-    this.props.changeForceSingleColumn(target.checked);
-  }
-
   render () {
-    const { intl, myAccount, multiColumn, unreadFollowRequests, forceSingleColumn } = this.props;
+    const { intl, myAccount, multiColumn, unreadFollowRequests } = this.props;
 
     const navItems = [];
     let i = 1;
@@ -187,11 +177,6 @@ class GettingStarted extends ImmutablePureComponent {
             </p>
           </div>
         </div>
-
-        <label className='navigational-toggle'>
-          <FormattedMessage id='getting_started.use_simple_layout' defaultMessage='Use simple layout' />
-          <Toggle checked={forceSingleColumn} onChange={this.handleForceSingleColumnChange} />
-        </label>
       </Column>
     );
   }
diff --git a/app/javascript/mastodon/features/search/index.js b/app/javascript/mastodon/features/search/index.js
new file mode 100644
index 000000000..76bf70d4b
--- /dev/null
+++ b/app/javascript/mastodon/features/search/index.js
@@ -0,0 +1,17 @@
+import React from 'react';
+import SearchContainer from 'mastodon/features/compose/containers/search_container';
+import SearchResultsContainer from 'mastodon/features/compose/containers/search_results_container';
+
+const Search = () => (
+  <div className='column search-page'>
+    <SearchContainer />
+
+    <div className='drawer__pager'>
+      <div className='drawer__inner darker'>
+        <SearchResultsContainer />
+      </div>
+    </div>
+  </div>
+);
+
+export default Search;
diff --git a/app/javascript/mastodon/features/ui/components/columns_area.js b/app/javascript/mastodon/features/ui/components/columns_area.js
index ae07b8907..756db3c61 100644
--- a/app/javascript/mastodon/features/ui/components/columns_area.js
+++ b/app/javascript/mastodon/features/ui/components/columns_area.js
@@ -14,6 +14,8 @@ import DrawerLoading from './drawer_loading';
 import BundleColumnError from './bundle_column_error';
 import { Compose, Notifications, HomeTimeline, CommunityTimeline, PublicTimeline, HashtagTimeline, DirectTimeline, FavouritedStatuses, ListTimeline } from '../../ui/util/async-components';
 import Icon from 'mastodon/components/icon';
+import ComposePanel from './compose_panel';
+import NavigationPanel from './navigation_panel';
 
 import detectPassiveEvents from 'detect-passive-events';
 import { scrollRight } from '../../../scroll';
@@ -173,14 +175,22 @@ class ColumnsArea extends ImmutablePureComponent {
 
       return (
         <div className='columns-area__panels'>
-          <div className='columns-area__panels__pane' />
+          <div className='columns-area__panels__pane columns-area__panels__pane--compositional'>
+            <div className='columns-area__panels__pane__inner'>
+              <ComposePanel />
+            </div>
+          </div>
 
           <div className='columns-area__panels__main'>
             <TabsBar key='tabs' />
             {content}
           </div>
 
-          <div className='columns-area__panels__pane' />
+          <div className='columns-area__panels__pane columns-area__panels__pane--start columns-area__panels__pane--navigational'>
+            <div className='columns-area__panels__pane__inner'>
+              <NavigationPanel />
+            </div>
+          </div>
 
           {floatingActionButton}
         </div>
diff --git a/app/javascript/mastodon/features/ui/components/compose_panel.js b/app/javascript/mastodon/features/ui/components/compose_panel.js
new file mode 100644
index 000000000..7c1158e5d
--- /dev/null
+++ b/app/javascript/mastodon/features/ui/components/compose_panel.js
@@ -0,0 +1,41 @@
+import React from 'react';
+import SearchContainer from 'mastodon/features/compose/containers/search_container';
+import ComposeFormContainer from 'mastodon/features/compose/containers/compose_form_container';
+import NavigationContainer from 'mastodon/features/compose/containers/navigation_container';
+import { invitesEnabled, version, repository, source_url } from 'mastodon/initial_state';
+import { Link } from 'react-router-dom';
+import { FormattedMessage } from 'react-intl';
+
+const ComposePanel = () => (
+  <div className='compose-panel'>
+    <SearchContainer openInRoute />
+    <NavigationContainer />
+    <ComposeFormContainer />
+
+    <div className='flex-spacer' />
+
+    <div className='getting-started__footer'>
+      <ul>
+        {invitesEnabled && <li><a href='/invites' target='_blank'><FormattedMessage id='getting_started.invite' defaultMessage='Invite people' /></a> · </li>}
+        <li><Link to='/keyboard-shortcuts'><FormattedMessage id='navigation_bar.keyboard_shortcuts' defaultMessage='Hotkeys' /></Link> · </li>
+        <li><a href='/auth/edit'><FormattedMessage id='getting_started.security' defaultMessage='Security' /></a> · </li>
+        <li><a href='/about/more' target='_blank'><FormattedMessage id='navigation_bar.info' defaultMessage='About this server' /></a> · </li>
+        <li><a href='https://joinmastodon.org/apps' target='_blank'><FormattedMessage id='navigation_bar.apps' defaultMessage='Mobile apps' /></a> · </li>
+        <li><a href='/terms' target='_blank'><FormattedMessage id='getting_started.terms' defaultMessage='Terms of service' /></a> · </li>
+        <li><a href='/settings/applications' target='_blank'><FormattedMessage id='getting_started.developers' defaultMessage='Developers' /></a> · </li>
+        <li><a href='https://docs.joinmastodon.org' target='_blank'><FormattedMessage id='getting_started.documentation' defaultMessage='Documentation' /></a> · </li>
+        <li><a href='/auth/sign_out' data-method='delete'><FormattedMessage id='navigation_bar.logout' defaultMessage='Logout' /></a></li>
+      </ul>
+
+      <p>
+        <FormattedMessage
+          id='getting_started.open_source_notice'
+          defaultMessage='Mastodon is open source software. You can contribute or report issues on GitHub at {github}.'
+          values={{ github: <span><a href={source_url} rel='noopener' target='_blank'>{repository}</a> (v{version})</span> }}
+        />
+      </p>
+    </div>
+  </div>
+);
+
+export default ComposePanel;
diff --git a/app/javascript/mastodon/features/ui/components/list_panel.js b/app/javascript/mastodon/features/ui/components/list_panel.js
new file mode 100644
index 000000000..9a52c1b10
--- /dev/null
+++ b/app/javascript/mastodon/features/ui/components/list_panel.js
@@ -0,0 +1,55 @@
+import React from 'react';
+import PropTypes from 'prop-types';
+import ImmutablePropTypes from 'react-immutable-proptypes';
+import ImmutablePureComponent from 'react-immutable-pure-component';
+import { fetchLists } from 'mastodon/actions/lists';
+import { connect } from 'react-redux';
+import { createSelector } from 'reselect';
+import { NavLink, withRouter } from 'react-router-dom';
+import Icon from 'mastodon/components/icon';
+
+const getOrderedLists = createSelector([state => state.get('lists')], lists => {
+  if (!lists) {
+    return lists;
+  }
+
+  return lists.toList().filter(item => !!item).sort((a, b) => a.get('title').localeCompare(b.get('title')));
+});
+
+const mapStateToProps = state => ({
+  lists: getOrderedLists(state),
+});
+
+export default @withRouter
+@connect(mapStateToProps)
+class ListPanel extends ImmutablePureComponent {
+
+  static propTypes = {
+    dispatch: PropTypes.func.isRequired,
+    lists: ImmutablePropTypes.list,
+  };
+
+  componentDidMount () {
+    const { dispatch } = this.props;
+    dispatch(fetchLists());
+  }
+
+  render () {
+    const { lists } = this.props;
+
+    if (!lists) {
+      return null;
+    }
+
+    return (
+      <div>
+        <hr />
+
+        {lists.map(list => (
+          <NavLink key={list.get('id')} className='column-link column-link--transparent' strict to={`/timelines/list/${list.get('id')}`}><Icon className='column-link__icon' id='list-ul' fixedWidth />{list.get('title')}</NavLink>
+        ))}
+      </div>
+    );
+  }
+
+}
diff --git a/app/javascript/mastodon/features/ui/components/navigation_panel.js b/app/javascript/mastodon/features/ui/components/navigation_panel.js
new file mode 100644
index 000000000..e2d962c63
--- /dev/null
+++ b/app/javascript/mastodon/features/ui/components/navigation_panel.js
@@ -0,0 +1,27 @@
+import React from 'react';
+import { NavLink, withRouter } from 'react-router-dom';
+import { FormattedMessage } from 'react-intl';
+import Icon from 'mastodon/components/icon';
+import NotificationsCounterIcon from './notifications_counter_icon';
+import ListPanel from './list_panel';
+
+const NavigationPanel = () => (
+  <div className='navigation-panel'>
+    <NavLink className='column-link column-link--transparent' to='/timelines/home' data-preview-title-id='column.home' data-preview-icon='home' ><Icon className='column-link__icon' id='home' fixedWidth /><FormattedMessage id='tabs_bar.home' defaultMessage='Home' /></NavLink>
+    <NavLink className='column-link column-link--transparent' to='/notifications' data-preview-title-id='column.notifications' data-preview-icon='bell' ><NotificationsCounterIcon className='column-link__icon' /><FormattedMessage id='tabs_bar.notifications' defaultMessage='Notifications' /></NavLink>
+    <NavLink className='column-link column-link--transparent' to='/timelines/public/local' data-preview-title-id='column.community' data-preview-icon='users' ><Icon className='column-link__icon' id='users' fixedWidth /><FormattedMessage id='tabs_bar.local_timeline' defaultMessage='Local' /></NavLink>
+    <NavLink className='column-link column-link--transparent' exact to='/timelines/public' data-preview-title-id='column.public' data-preview-icon='globe' ><Icon className='column-link__icon' id='globe' fixedWidth /><FormattedMessage id='tabs_bar.federated_timeline' defaultMessage='Federated' /></NavLink>
+    <NavLink className='column-link column-link--transparent' to='/timelines/direct'><Icon className='column-link__icon' id='envelope' fixedWidth /><FormattedMessage id='navigation_bar.direct' defaultMessage='Direct messages' /></NavLink>
+    <NavLink className='column-link column-link--transparent' to='/favourites'><Icon className='column-link__icon' id='star' fixedWidth /><FormattedMessage id='navigation_bar.favourites' defaultMessage='Favourites' /></NavLink>
+    <NavLink className='column-link column-link--transparent' to='/lists'><Icon className='column-link__icon' id='list-ul' fixedWidth /><FormattedMessage id='navigation_bar.lists' defaultMessage='Lists' /></NavLink>
+
+    <ListPanel />
+
+    <hr />
+
+    <a className='column-link column-link--transparent' href='/settings/preferences' target='_blank'><Icon className='column-link__icon' id='cog' fixedWidth /><FormattedMessage id='navigation_bar.preferences' defaultMessage='Preferences' /></a>
+    <a className='column-link column-link--transparent' href='/relationships' target='_blank'><Icon className='column-link__icon' id='address-book-o' fixedWidth /><FormattedMessage id='navigation_bar.follows_and_followers' defaultMessage='Follows and followers' /></a>
+  </div>
+);
+
+export default withRouter(NavigationPanel);
diff --git a/app/javascript/mastodon/features/ui/components/notifications_counter_icon.js b/app/javascript/mastodon/features/ui/components/notifications_counter_icon.js
index deb907866..9673c57fe 100644
--- a/app/javascript/mastodon/features/ui/components/notifications_counter_icon.js
+++ b/app/javascript/mastodon/features/ui/components/notifications_counter_icon.js
@@ -9,15 +9,16 @@ const mapStateToProps = state => ({
 
 const formatNumber = num => num > 99 ? '99+' : num;
 
-const NotificationsCounterIcon = ({ count }) => (
+const NotificationsCounterIcon = ({ count, className }) => (
   <i className='icon-with-badge'>
-    <Icon id='bell' fixedWidth />
+    <Icon id='bell' fixedWidth className={className} />
     {count > 0 && <i className='icon-with-badge__badge'>{formatNumber(count)}</i>}
   </i>
 );
 
 NotificationsCounterIcon.propTypes = {
   count: PropTypes.number.isRequired,
+  className: PropTypes.string,
 };
 
 export default connect(mapStateToProps)(NotificationsCounterIcon);
diff --git a/app/javascript/mastodon/features/ui/components/tabs_bar.js b/app/javascript/mastodon/features/ui/components/tabs_bar.js
index aaef88d82..7c8e825ad 100644
--- a/app/javascript/mastodon/features/ui/components/tabs_bar.js
+++ b/app/javascript/mastodon/features/ui/components/tabs_bar.js
@@ -8,14 +8,12 @@ import Icon from 'mastodon/components/icon';
 import NotificationsCounterIcon from './notifications_counter_icon';
 
 export const links = [
-  <NavLink className='tabs-bar__link primary' to='/notifications' data-preview-title-id='column.notifications' data-preview-icon='bell' ><NotificationsCounterIcon /><FormattedMessage id='tabs_bar.notifications' defaultMessage='Notifications' /></NavLink>,
-  <NavLink className='tabs-bar__link primary' to='/timelines/home' data-preview-title-id='column.home' data-preview-icon='home' ><Icon id='home' fixedWidth /><FormattedMessage id='tabs_bar.home' defaultMessage='Home' /></NavLink>,
-
-  <NavLink className='tabs-bar__link secondary' to='/timelines/public/local' data-preview-title-id='column.community' data-preview-icon='users' ><Icon id='users' fixedWidth /><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' ><Icon id='globe' fixedWidth /><FormattedMessage id='tabs_bar.federated_timeline' defaultMessage='Federated' /></NavLink>,
-  <NavLink className='tabs-bar__link primary' to='/search' data-preview-title-id='tabs_bar.search' data-preview-icon='bell' ><Icon id='search' fixedWidth /><FormattedMessage id='tabs_bar.search' defaultMessage='Search' /></NavLink>,
-
-  <NavLink className='tabs-bar__link primary' style={{ flexGrow: '0', flexBasis: '30px' }} to='/getting-started' data-preview-title-id='getting_started.heading' data-preview-icon='bars' ><Icon id='bars' fixedWidth /></NavLink>,
+  <NavLink className='tabs-bar__link' to='/notifications' data-preview-title-id='column.notifications' data-preview-icon='bell' ><NotificationsCounterIcon /><FormattedMessage id='tabs_bar.notifications' defaultMessage='Notifications' /></NavLink>,
+  <NavLink className='tabs-bar__link' to='/timelines/home' data-preview-title-id='column.home' data-preview-icon='home' ><Icon id='home' fixedWidth /><FormattedMessage id='tabs_bar.home' defaultMessage='Home' /></NavLink>,
+  <NavLink className='tabs-bar__link' to='/timelines/public/local' data-preview-title-id='column.community' data-preview-icon='users' ><Icon id='users' fixedWidth /><FormattedMessage id='tabs_bar.local_timeline' defaultMessage='Local' /></NavLink>,
+  <NavLink className='tabs-bar__link' exact to='/timelines/public' data-preview-title-id='column.public' data-preview-icon='globe' ><Icon id='globe' fixedWidth /><FormattedMessage id='tabs_bar.federated_timeline' defaultMessage='Federated' /></NavLink>,
+  <NavLink className='tabs-bar__link optional' to='/search' data-preview-title-id='tabs_bar.search' data-preview-icon='bell' ><Icon id='search' fixedWidth /><FormattedMessage id='tabs_bar.search' defaultMessage='Search' /></NavLink>,
+  <NavLink className='tabs-bar__link' style={{ flexGrow: '0', flexBasis: '30px' }} to='/getting-started' data-preview-title-id='getting_started.heading' data-preview-icon='bars' ><Icon id='bars' fixedWidth /></NavLink>,
 ];
 
 export function getIndex (path) {
diff --git a/app/javascript/mastodon/features/ui/index.js b/app/javascript/mastodon/features/ui/index.js
index 6d5279157..61fd77af7 100644
--- a/app/javascript/mastodon/features/ui/index.js
+++ b/app/javascript/mastodon/features/ui/index.js
@@ -44,8 +44,9 @@ import {
   Mutes,
   PinnedStatuses,
   Lists,
+  Search,
 } from './util/async-components';
-import { me } from '../../initial_state';
+import { me, forceSingleColumn } from '../../initial_state';
 import { previewState as previewMediaState } from './components/media_modal';
 import { previewState as previewVideoState } from './components/video_modal';
 
@@ -62,7 +63,6 @@ const mapStateToProps = state => ({
   hasComposingText: state.getIn(['compose', 'text']).trim().length !== 0,
   hasMediaAttachments: state.getIn(['compose', 'media_attachments']).size > 0,
   dropdownMenuIsOpen: state.getIn(['dropdown_menu', 'openId']) !== null,
-  forceSingleColumn: state.getIn(['settings', 'forceSingleColumn'], false),
 });
 
 const keyMap = {
@@ -101,7 +101,6 @@ class SwitchingColumnsArea extends React.PureComponent {
     children: PropTypes.node,
     location: PropTypes.object,
     onLayoutChange: PropTypes.func.isRequired,
-    forceSingleColumn: PropTypes.bool,
   };
 
   state = {
@@ -140,7 +139,7 @@ class SwitchingColumnsArea extends React.PureComponent {
   }
 
   render () {
-    const { children, forceSingleColumn } = this.props;
+    const { children } = this.props;
     const { mobile } = this.state;
     const singleColumn = forceSingleColumn || mobile;
     const redirect = singleColumn ? <Redirect from='/' to='/timelines/home' exact /> : <Redirect from='/' to='/getting-started' exact />;
@@ -162,7 +161,7 @@ class SwitchingColumnsArea extends React.PureComponent {
           <WrappedRoute path='/favourites' component={FavouritedStatuses} content={children} componentParams={{ shouldUpdateScroll: this.shouldUpdateScroll }} />
           <WrappedRoute path='/pinned' component={PinnedStatuses} content={children} componentParams={{ shouldUpdateScroll: this.shouldUpdateScroll }} />
 
-          <WrappedRoute path='/search' component={Compose} content={children} componentParams={{ isSearchPage: true }} />
+          <WrappedRoute path='/search' component={Search} content={children} />
 
           <WrappedRoute path='/statuses/new' component={Compose} content={children} />
           <WrappedRoute path='/statuses/:statusId' exact component={Status} content={children} componentParams={{ shouldUpdateScroll: this.shouldUpdateScroll }} />
@@ -207,7 +206,6 @@ class UI extends React.PureComponent {
     location: PropTypes.object,
     intl: PropTypes.object.isRequired,
     dropdownMenuIsOpen: PropTypes.bool,
-    forceSingleColumn: PropTypes.bool,
   };
 
   state = {
@@ -456,7 +454,7 @@ class UI extends React.PureComponent {
 
   render () {
     const { draggingOver } = this.state;
-    const { children, isComposing, location, dropdownMenuIsOpen, forceSingleColumn } = this.props;
+    const { children, isComposing, location, dropdownMenuIsOpen } = this.props;
 
     const handlers = {
       help: this.handleHotkeyToggleHelp,
@@ -482,7 +480,7 @@ class UI extends React.PureComponent {
     return (
       <HotKeys keyMap={keyMap} handlers={handlers} ref={this.setHotkeysRef} attach={window} focused>
         <div className={classNames('ui', { 'is-composing': isComposing })} ref={this.setRef} style={{ pointerEvents: dropdownMenuIsOpen ? 'none' : null }}>
-          <SwitchingColumnsArea location={location} onLayoutChange={this.handleLayoutChange} forceSingleColumn={forceSingleColumn}>
+          <SwitchingColumnsArea location={location} onLayoutChange={this.handleLayoutChange}>
             {children}
           </SwitchingColumnsArea>
 
diff --git a/app/javascript/mastodon/features/ui/util/async-components.js b/app/javascript/mastodon/features/ui/util/async-components.js
index 235fd2a07..6e8ed163a 100644
--- a/app/javascript/mastodon/features/ui/util/async-components.js
+++ b/app/javascript/mastodon/features/ui/util/async-components.js
@@ -129,3 +129,7 @@ export function ListEditor () {
 export function ListAdder () {
   return import(/*webpackChunkName: "features/list_adder" */'../../list_adder');
 }
+
+export function Search () {
+  return import(/*webpackChunkName: "features/search" */'../../search');
+}
diff --git a/app/javascript/mastodon/initial_state.js b/app/javascript/mastodon/initial_state.js
index ac8e51938..aa0fa2617 100644
--- a/app/javascript/mastodon/initial_state.js
+++ b/app/javascript/mastodon/initial_state.js
@@ -21,5 +21,6 @@ export const version = getMeta('version');
 export const mascot = getMeta('mascot');
 export const profile_directory = getMeta('profile_directory');
 export const isStaff = getMeta('is_staff');
+export const forceSingleColumn = !getMeta('advanced_layout');
 
 export default initialState;
diff --git a/app/javascript/mastodon/reducers/settings.js b/app/javascript/mastodon/reducers/settings.js
index 6c0c28802..cdd64ffd0 100644
--- a/app/javascript/mastodon/reducers/settings.js
+++ b/app/javascript/mastodon/reducers/settings.js
@@ -14,8 +14,6 @@ const initialState = ImmutableMap({
 
   skinTone: 1,
 
-  forceSingleColumn: false,
-
   home: ImmutableMap({
     shows: ImmutableMap({
       reblog: true,
diff --git a/app/javascript/styles/mastodon/components.scss b/app/javascript/styles/mastodon/components.scss
index fe3c55755..39931d49a 100644
--- a/app/javascript/styles/mastodon/components.scss
+++ b/app/javascript/styles/mastodon/components.scss
@@ -1801,7 +1801,12 @@ a.account__display-name {
       display: flex;
       justify-content: flex-end;
 
+      &--start {
+        justify-content: flex-start;
+      }
+
       &__inner {
+        width: 285px;
         pointer-events: auto;
         height: 100%;
       }
@@ -1925,6 +1930,7 @@ a.account__display-name {
   display: block;
   flex: 1 1 auto;
   padding: 15px 10px;
+  padding-bottom: 13px;
   color: $primary-text-color;
   text-decoration: none;
   text-align: center;
@@ -1949,6 +1955,7 @@ a.account__display-name {
   &:active {
     @media screen and (min-width: 631px) {
       background: lighten($ui-base-color, 14%);
+      border-bottom-color: lighten($ui-base-color, 14%);
     }
   }
 
@@ -1978,11 +1985,21 @@ a.account__display-name {
     padding: 0;
   }
 
-  .search__input,
   .autosuggest-textarea__textarea {
     font-size: 16px;
   }
 
+  .search__input {
+    line-height: 18px;
+    font-size: 16px;
+    padding: 15px;
+    padding-right: 30px;
+  }
+
+  .search__icon .fa {
+    top: 15px;
+  }
+
   @media screen and (min-width: 360px) {
     padding: 10px 0;
   }
@@ -2038,6 +2055,58 @@ a.account__display-name {
         margin-top: 10px;
       }
     }
+
+    .account {
+      padding: 15px 10px;
+    }
+
+    .notification {
+      &__message {
+        margin-left: 48px + 15px * 2;
+        padding-top: 15px;
+      }
+
+      &__favourite-icon-wrapper {
+        left: -32px;
+      }
+
+      .status {
+        padding-top: 8px;
+      }
+
+      .account {
+        padding-top: 8px;
+      }
+
+      .account__avatar-wrapper {
+        margin-left: 17px;
+        margin-right: 15px;
+      }
+    }
+  }
+}
+
+.floating-action-button {
+  position: fixed;
+  display: flex;
+  justify-content: center;
+  align-items: center;
+  width: 3.9375rem;
+  height: 3.9375rem;
+  bottom: 1.3125rem;
+  right: 1.3125rem;
+  background: darken($ui-highlight-color, 3%);
+  color: $white;
+  border-radius: 50%;
+  font-size: 21px;
+  line-height: 21px;
+  text-decoration: none;
+  box-shadow: 2px 3px 9px rgba($base-shadow-color, 0.4);
+
+  &:hover,
+  &:focus,
+  &:active {
+    background: lighten($ui-highlight-color, 7%);
   }
 }
 
@@ -2059,12 +2128,41 @@ a.account__display-name {
   }
 }
 
+@media screen and (max-width: 600px + (285px * 1) + (10px * 1)) {
+  .columns-area__panels__pane--compositional {
+    display: none;
+  }
+}
+
+@media screen and (min-width: 600px + (285px * 1) + (10px * 1)) {
+  .floating-action-button,
+  .tabs-bar__link.optional {
+    display: none;
+  }
+
+  .search-page .search {
+    display: none;
+  }
+}
+
+@media screen and (max-width: 600px + (285px * 2) + (10px * 2)) {
+  .columns-area__panels__pane--navigational {
+    display: none;
+  }
+}
+
+@media screen and (min-width: 600px + (285px * 2) + (10px * 2)) {
+  .tabs-bar {
+    display: none;
+  }
+}
+
 .icon-with-badge {
   position: relative;
 
   &__badge {
     position: absolute;
-    right: -13px;
+    left: 9px;
     top: -13px;
     background: $ui-highlight-color;
     border: 2px solid lighten($ui-base-color, 8%);
@@ -2077,6 +2175,57 @@ a.account__display-name {
   }
 }
 
+.column-link--transparent .icon-with-badge__badge {
+  border-color: darken($ui-base-color, 8%);
+}
+
+.compose-panel {
+  width: 285px;
+  margin-top: 10px;
+  display: flex;
+  flex-direction: column;
+  height: 100%;
+
+  .search__input {
+    line-height: 18px;
+    font-size: 16px;
+    padding: 15px;
+    padding-right: 30px;
+  }
+
+  .search__icon .fa {
+    top: 15px;
+  }
+
+  .navigation-bar {
+    padding-top: 20px;
+    padding-bottom: 20px;
+  }
+
+  .flex-spacer {
+    background: transparent;
+  }
+
+  .autosuggest-textarea__textarea {
+    max-height: 200px;
+  }
+
+  .compose-form__upload-thumbnail {
+    height: 80px;
+  }
+}
+
+.navigation-panel {
+  margin-top: 10px;
+
+  hr {
+    border: 0;
+    background: transparent;
+    border-top: 1px solid lighten($ui-base-color, 4%);
+    margin: 10px 0;
+  }
+}
+
 .drawer__pager {
   box-sizing: border-box;
   padding: 0;
@@ -2127,15 +2276,6 @@ a.account__display-name {
   }
 }
 
-.navigational-toggle {
-  padding: 10px;
-  display: flex;
-  align-items: center;
-  justify-content: space-between;
-  font-size: 14px;
-  color: $dark-text-color;
-}
-
 .pseudo-drawer {
   background: lighten($ui-base-color, 13%);
   font-size: 13px;
@@ -2365,9 +2505,31 @@ a.account__display-name {
   padding: 15px;
   text-decoration: none;
 
-  &:hover {
+  &:hover,
+  &:focus,
+  &:active {
     background: lighten($ui-base-color, 11%);
   }
+
+  &:focus {
+    outline: 0;
+  }
+
+  &--transparent {
+    background: transparent;
+    color: $ui-secondary-color;
+
+    &:hover,
+    &:focus,
+    &:active {
+      background: transparent;
+      color: $primary-text-color;
+    }
+
+    &.active {
+      color: $ui-highlight-color;
+    }
+  }
 }
 
 .column-link__icon {
@@ -5436,34 +5598,6 @@ noscript {
   }
 }
 
-.floating-action-button {
-  position: fixed;
-  display: flex;
-  justify-content: center;
-  align-items: center;
-  width: 3.9375rem;
-  height: 3.9375rem;
-  bottom: 1.3125rem;
-  right: 1.3125rem;
-  background: darken($ui-highlight-color, 3%);
-  color: $white;
-  border-radius: 50%;
-  font-size: 21px;
-  line-height: 21px;
-  text-decoration: none;
-  box-shadow: 2px 3px 9px rgba($base-shadow-color, 0.4);
-
-  &:hover,
-  &:focus,
-  &:active {
-    background: lighten($ui-highlight-color, 7%);
-  }
-
-  @media screen and (min-width: 630px) {
-    display: none;
-  }
-}
-
 .account__header__content {
   color: $darker-text-color;
   font-size: 14px;
diff --git a/app/lib/user_settings_decorator.rb b/app/lib/user_settings_decorator.rb
index b7e0d577b..3dcdccab5 100644
--- a/app/lib/user_settings_decorator.rb
+++ b/app/lib/user_settings_decorator.rb
@@ -68,6 +68,8 @@ class UserSettingsDecorator
     user.settings['aggregate_reblogs']   = aggregate_reblogs_preference if change?('setting_aggregate_reblogs')
     user.settings['show_application']    = show_application_preference if change?('setting_show_application')
     user.settings['default_content_type']= default_content_type_preference if change?('setting_default_content_type')
+    user.settings['theme']               = theme_preference if change?('setting_theme')
+    user.settings['advanced_layout']     = advanced_layout_preference if change?('setting_advanced_layout')
   end
 
   def larger_menus_preference
@@ -270,6 +272,10 @@ class UserSettingsDecorator
     boolean_cast_setting 'setting_show_application'
   end
 
+  def theme_preference
+    settings['setting_theme']
+  end
+
   def default_language_preference
     settings['setting_default_language']
   end
@@ -282,6 +288,10 @@ class UserSettingsDecorator
     settings['setting_default_content_type']
   end
 
+  def advanced_layout_preference
+    boolean_cast_setting 'setting_advanced_layout'
+  end
+
   def boolean_cast_setting(key)
     ActiveModel::Type::Boolean.new.cast(settings[key])
   end
diff --git a/app/models/user.rb b/app/models/user.rb
index f72acd452..427b32066 100644
--- a/app/models/user.rb
+++ b/app/models/user.rb
@@ -163,6 +163,9 @@ class User < ApplicationRecord
     :aggregate_reblogs,
     :show_application,
     :default_content_type,
+
+    :theme,
+    :advanced_layout,
     to: :settings,
     prefix: :setting,
     allow_nil: false
@@ -249,37 +252,6 @@ class User < ApplicationRecord
     save!
   end
 
-  def notify_staff_about_pending_account!
-    LogWorker.perform_async("\xf0\x9f\x86\x95 New account <#{self.account.username}> is awaiting admin approval.\n\nReview (moderators only): https://#{Rails.configuration.x.web_domain || Rails.configuration.x.local_domain}/admin/pending_accounts")
-    User.staff.includes(:account).each do |u|
-      next unless u.allows_pending_account_emails?
-      AdminMailer.new_pending_account(u.account, self).deliver_later
-    end
-  end
-
-  def detect_spam!
-    janitor = janitor_account || Account.representative
-
-    intro = self.invite_request&.text
-    # normalize it
-    intro = intro.gsub(/[\u200b-\u200d\ufeff\u200e\u200f]/, '').strip.downcase unless intro.nil?
-
-    return false unless intro.blank? || intro.split.count < 5 || SPAM_TRIGGERS.match?(intro)
-
-    user_friendly_action_log(janitor, :reject_registration, self.account.username, "Registration was spam filtered.")
-    Form::AccountBatch.new(current_account: janitor, account_ids: account_id, action: 'reject').save
-
-    true
-  rescue ActiveRecord::RecordNotFound, ActiveRecord::RecordInvalid
-    false
-  end
-
-  def janitor_account
-    account_id = ENV.fetch('JANITOR_USER', '').to_i
-    return if account_id == 0
-    Account.find_by(id: account_id)
-  end
-
   def wants_larger_menus?
     @wants_larger_menus ||= (settings.larger_menus || false)
   end
@@ -479,18 +451,18 @@ class User < ApplicationRecord
     super
   end
 
-  def send_reset_password_instructions
-    return false if encrypted_password.blank? && (Devise.pam_authentication || Devise.ldap_authentication)
+  def send_confirmation_instructions
+    return false if detect_spam!
     super
   end
 
-  def reset_password!(new_password, new_password_confirmation)
+  def send_reset_password_instructions
     return false if encrypted_password.blank? && (Devise.pam_authentication || Devise.ldap_authentication)
     super
   end
 
-  def send_confirmation_instructions
-    return false if detect_spam!
+  def reset_password!(new_password, new_password_confirmation)
+    return false if encrypted_password.blank? && (Devise.pam_authentication || Devise.ldap_authentication)
     super
   end
 
@@ -539,6 +511,37 @@ class User < ApplicationRecord
     regenerate_feed! if needs_feed_update?
   end
 
+  def notify_staff_about_pending_account!
+    LogWorker.perform_async("\xf0\x9f\x86\x95 New account <#{self.account.username}> is awaiting admin approval.\n\nReview (moderators only): https://#{Rails.configuration.x.web_domain || Rails.configuration.x.local_domain}/admin/pending_accounts")
+    User.staff.includes(:account).each do |u|
+      next unless u.allows_pending_account_emails?
+      AdminMailer.new_pending_account(u.account, self).deliver_later
+    end
+  end
+
+  def detect_spam!
+    janitor = janitor_account || Account.representative
+
+    intro = self.invite_request&.text
+    # normalize it
+    intro = intro.gsub(/[\u200b-\u200d\ufeff\u200e\u200f]/, '').strip.downcase unless intro.nil?
+
+    return false unless intro.blank? || intro.split.count < 5 || SPAM_TRIGGERS.match?(intro)
+
+    user_friendly_action_log(janitor, :reject_registration, self.account.username, "Registration was spam filtered.")
+    Form::AccountBatch.new(current_account: janitor, account_ids: account_id, action: 'reject').save
+
+    true
+  rescue ActiveRecord::RecordNotFound, ActiveRecord::RecordInvalid
+    false
+  end
+
+  def janitor_account
+    account_id = ENV.fetch('JANITOR_USER', '').to_i
+    return if account_id == 0
+    Account.find_by(id: account_id)
+  end
+
   def regenerate_feed!
     return unless Redis.current.setnx("account:#{account_id}:regeneration", true)
     Redis.current.expire("account:#{account_id}:regeneration", 1.day.seconds)
diff --git a/app/serializers/initial_state_serializer.rb b/app/serializers/initial_state_serializer.rb
index 7afeffe25..cb5b0017e 100644
--- a/app/serializers/initial_state_serializer.rb
+++ b/app/serializers/initial_state_serializer.rb
@@ -48,6 +48,7 @@ class InitialStateSerializer < ActiveModel::Serializer
       store[:display_media]   = object.current_account.user.setting_display_media
       store[:expand_spoilers] = object.current_account.user.setting_expand_spoilers
       store[:reduce_motion]   = object.current_account.user.setting_reduce_motion
+      store[:advanced_layout] = object.current_account.user.setting_advanced_layout
       store[:is_staff]        = object.current_account.user.staff?
       store[:default_content_type] = object.current_account.user.setting_default_content_type
     end
diff --git a/app/views/settings/preferences/show.html.haml b/app/views/settings/preferences/show.html.haml
index e6198de6a..80ecf6d40 100644
--- a/app/views/settings/preferences/show.html.haml
+++ b/app/views/settings/preferences/show.html.haml
@@ -94,6 +94,9 @@
     = f.input :setting_hide_mntions_packm8, as: :boolean, wrapper: :with_label
 
   .fields-group
+    = f.input :setting_advanced_layout, as: :boolean, wrapper: :with_label
+
+  .fields-group
     = f.input :setting_unfollow_modal, as: :boolean, wrapper: :with_label
     = f.input :setting_boost_modal, as: :boolean, wrapper: :with_label
     = f.input :setting_favourite_modal, as: :boolean, wrapper: :with_label
diff --git a/config/locales/simple_form.en.yml b/config/locales/simple_form.en.yml
index cb387d6bf..f039f6193 100644
--- a/config/locales/simple_form.en.yml
+++ b/config/locales/simple_form.en.yml
@@ -28,6 +28,7 @@ en:
         password: Use at least 8 characters
         phrase: Will be matched regardless of casing in text or content warning of a roar
         scopes: Which APIs the application will be allowed to access. If you select a top-level scope, you don't need to select individual ones.
+        setting_advanced_layout: The advanced UI consists of multiple customizable columns
         setting_aggregate_reblogs: Do not show new repeats for roars that have been recently repeated (only affects newly-received repeats)
         setting_default_content_type_html_html: "<strong>&lt;strong&gt;Bold&lt;/strong&gt;</strong>, <u>&lt;u&gt;Underline&lt;/u&gt;</u>, <em>&lt;em&gt;Italic&lt;/em&gt;</em>, <code>&lt;code&gt;Console&lt;/code&gt;</code>, ..."
         setting_default_content_type_markdown_html: "<strong>**Bold**</strong>, <u>_Underline_</u>, <em>*Italic*</em>, <code>`Console`</code>, ..."
@@ -42,7 +43,8 @@ en:
         setting_hide_network: Who in your pack and who joins your pack will not be shown on your profile
         setting_noindex: Affects your public profile and roar pages
         setting_show_application: The application you use to roar will be displayed in the detailed view of your roars
-        setting_skin: Reskins the selected Monsterpit flavour
+        setting_skin: Reskins the selected Mastodon flavour
+        setting_theme: Affects how Mastodon looks when you're logged in from any device.
         username: Your username will be unique on %{domain}
         whole_word: When the keyword or phrase is alphanumeric only, it will only be applied if it matches the whole word
       featured_tag:
@@ -113,6 +115,7 @@ en:
         otp_attempt: Two-factor code
         password: Password
         phrase: Keyword or phrase
+        setting_advanced_layout: Enable advanced web interface
         setting_aggregate_reblogs: Group repeats in timelines
         setting_auto_play_gif: Auto-play animated GIFs
         setting_boost_modal: Show confirmation dialog before repeating
@@ -175,8 +178,8 @@ en:
         setting_noindex: Opt-out of search engine indexing
         setting_reduce_motion: Reduce motion in animations
         setting_show_application: Disclose application used to send roars
-        setting_skin: Skin
         setting_system_font_ui: Use system's default font
+        setting_theme: Site theme
         setting_unfollow_modal: Show confirmation dialog before unfollowing someone
         severity: Severity
         type: Import type
diff --git a/config/settings.yml b/config/settings.yml
index 70aadd574..b0d3dfa3a 100644
--- a/config/settings.yml
+++ b/config/settings.yml
@@ -35,6 +35,7 @@ defaults: &defaults
   flavour: 'glitch'
   skin: 'default'
   aggregate_reblogs: true
+  advanced_layout: true
   notification_emails:
     follow: false
     reblog: false