下タブバーの実装

app/controllers/settings/preferences_controller.rb

@@ -55,6 +55,8 @@ class Settings::PreferencesController < Settings::BaseController
       :setting_trends,
       :setting_crop_images,
       :setting_always_send_emails,
+      :setting_place_tab_bar_at_bottom,
+      :setting_show_tab_bar_label,
       notification_emails: %i(follow follow_request reblog favourite mention report pending_account trending_tag appeal),
       interactions: %i(must_be_follower must_be_following must_be_following_dm)
     )

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

@@ -21,8 +21,15 @@ import {
 } from '../../ui/util/async-components';
 import ComposePanel from './compose_panel';
 import NavigationPanel from './navigation_panel';
+import TabsBar from './tabs_bar';
+import { place_tab_bar_at_bottom } from 'mastodon/initial_state';
 import { supportsPassiveEvents } from 'detect-passive-events';
 import { scrollRight } from '../../../scroll';
+import { Link } from 'react-router-dom';
+import classNames from 'classnames';
+import Icon from 'mastodon/components/icon';
+
+const shouldHideFAB = path => path.match(/^\/statuses\/|^\/search|^\/getting-started/);
 
 const componentMap = {
   'COMPOSE': Compose,
@@ -138,6 +145,28 @@ export default class ColumnsArea extends ImmutablePureComponent {
     const { renderComposePanel } = this.state;
 
     if (singleColumn) {
+      if (place_tab_bar_at_bottom) {
+        return (
+          <div className='columns-area__panels tab-ber-bottom'>
+            <div className='columns-area__panels__pane columns-area__panels__pane--compositional'>
+              <div className='columns-area__panels__pane__inner'>
+                {renderComposePanel && <ComposePanel />}
+              </div>
+            </div>
+
+            <div className='columns-area__panels__main timeline'>
+              <div className='tabs-bar__wrapper'><div id='tabs-bar__portal' /></div>
+              <div className='columns-area columns-area--mobile'>{children}</div>
+            </div>
+
+            <div className='columns-area__panels__main navber'>
+              {location.pathname !== '/publish' && <Link to='/publish' className='button bottom_right'><Icon id='pencil' fixedWidth /></Link>}
+              <TabsBar key='tabs' />
+            </div>
+
+          </div>
+        ); 
+      } else {
         return (
           <div className='columns-area__panels'>
             <div className='columns-area__panels__pane columns-area__panels__pane--compositional'>
@@ -159,6 +188,7 @@ export default class ColumnsArea extends ImmutablePureComponent {
           </div>
         ); 
       }
+    }
 
     return (
       <div className={`columns-area ${ isModalOpen ? 'unscrollable' : '' }`} ref={this.setRef}>

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

@@ -0,0 +1,96 @@
+import React from 'react';
+import PropTypes from 'prop-types';
+import { NavLink, withRouter } from 'react-router-dom';
+import { FormattedMessage, injectIntl } from 'react-intl';
+import NotificationsCounterIcon from './notifications_counter_icon';
+import { place_tab_bar_at_bottom, show_tab_bar_label } from 'mastodon/initial_state';
+import classNames from 'classnames';
+import { debounce } from 'lodash';
+import { isUserTouching } from '../../../is_mobile';
+import Icon from 'mastodon/components/icon';
+
+export const links = [
+  <NavLink className='tabs-bar__link' to='/home' data-preview-title-id='column.home' data-preview-icon='home' ><Icon id='home' fixedWidth /><span className='tabs-bar__link__full-label'><FormattedMessage id='tabs_bar.home' defaultMessage='Home' /></span><span className='tabs-bar__link__short-label'><FormattedMessage id='navigation_bar.short.home' defaultMessage='Home' /></span></NavLink>,
+  <NavLink className='tabs-bar__link' to='/notifications' data-preview-title-id='column.notifications' data-preview-icon='bell' ><NotificationsCounterIcon /><span className='tabs-bar__link__full-label'><FormattedMessage id='tabs_bar.notifications' defaultMessage='Notifications' /></span><span className='tabs-bar__link__short-label'><FormattedMessage id='navigation_bar.short.notifications' defaultMessage='Notif.' /></span></NavLink>,
+  <NavLink className='tabs-bar__link' to='/public/local' data-preview-title-id='column.community' data-preview-icon='users' ><Icon id='users' fixedWidth /><span className='tabs-bar__link__full-label'><FormattedMessage id='tabs_bar.local_timeline' defaultMessage='Federated' /></span><span className='tabs-bar__link__short-label'><FormattedMessage id='navigation_bar.short.local_timeline' defaultMessage='LTL' /></span></NavLink>,
+  <NavLink className='tabs-bar__link' exact to='/public' data-preview-title-id='column.public' data-preview-icon='globe' ><Icon id='globe' fixedWidth /><span className='tabs-bar__link__full-label'><FormattedMessage id='tabs_bar.federated_timeline' defaultMessage='Federated' /></span><span className='tabs-bar__link__short-label'><FormattedMessage id='navigation_bar.short.public_timeline' defaultMessage='FTL' /></span></NavLink>,
+  <NavLink className='tabs-bar__link optional' to='/search' data-preview-title-id='tabs_bar.search' data-preview-icon='bell' ><Icon id='search' fixedWidth /><span className='tabs-bar__link__full-label'><FormattedMessage id='tabs_bar.search' defaultMessage='Search' /></span><span className='tabs-bar__link__short-label'><FormattedMessage id='navigation_bar.short.search' defaultMessage='Search' /></span></NavLink>,
+  <NavLink className='tabs-bar__link hamburger' to='/getting-started' data-preview-title-id='getting_started.heading' data-preview-icon='bars' ><Icon id='bars' fixedWidth /></NavLink>,
+];
+
+export function getIndex (path) {
+  return links.findIndex(link => link.props.to === path);
+}
+
+export function getLink (index) {
+  return links[index].props.to;
+}
+
+export default @injectIntl
+@withRouter
+class TabsBar extends React.PureComponent {
+
+  static propTypes = {
+    intl: PropTypes.object.isRequired,
+    history: PropTypes.object.isRequired,
+  };
+
+  setRef = ref => {
+    this.node = ref;
+  }
+
+  handleClick = (e) => {
+    // Only apply optimization for touch devices, which we assume are slower
+    // We thus avoid the 250ms delay for non-touch devices and the lag for touch devices
+    if (isUserTouching()) {
+      e.preventDefault();
+      e.persist();
+
+      requestAnimationFrame(() => {
+        const tabs = Array(...this.node.querySelectorAll('.tabs-bar__link'));
+        const currentTab = tabs.find(tab => tab.classList.contains('active'));
+        const nextTab = tabs.find(tab => tab.contains(e.target));
+        const { props: { to } } = links[Array(...this.node.childNodes).indexOf(nextTab)];
+
+
+        if (currentTab !== nextTab) {
+          if (currentTab) {
+            currentTab.classList.remove('active');
+          }
+
+          const listener = debounce(() => {
+            nextTab.removeEventListener('transitionend', listener);
+            this.props.history.push(to);
+          }, 50);
+
+          nextTab.addEventListener('transitionend', listener);
+          nextTab.classList.add('active');
+        }
+      });
+    }
+
+  }
+
+  static contextTypes = {
+    router: PropTypes.object.isRequired,
+    identity: PropTypes.object.isRequired,
+  };
+
+  static propTypes = {
+    intl: PropTypes.object.isRequired,
+  };
+
+  render () {
+    const { intl: { formatMessage } } = this.props;
+    return (
+      <div className='tabs-bar__wrapper'>
+        <nav className={classNames('tabs-bar', { 'bottom-bar': place_tab_bar_at_bottom })} ref={this.setRef}>
+          {links.map(link => React.cloneElement(link, { key: link.props.to, className: classNames(link.props.className, { 'short-label': show_tab_bar_label }), onClick: this.handleClick, 'aria-label': formatMessage({ id: link.props['data-preview-title-id'] }) }))}
+        </nav>
+
+        <div id='tabs-bar__portal' />
+      </div>
+    );
+  }
+
+}

app/javascript/mastodon/initial_state.js

@@ -135,5 +135,7 @@ export const version = getMeta('version');
 export const translationEnabled = getMeta('translation_enabled');
 export const languages = initialState?.languages;
 export const statusPageUrl = getMeta('status_page_url');
+export const place_tab_bar_at_bottom = getMeta('place_tab_bar_at_bottom');
+export const show_tab_bar_label = getMeta('show_tab_bar_label');
 
 export default initialState;

app/javascript/styles/application.scss

@@ -23,3 +23,5 @@
 @import 'mastodon/dashboard';
 @import 'mastodon/rtl';
 @import 'mastodon/accessibility';
+
+@import 'plugin';

app/javascript/styles/plugin.scss

@@ -0,0 +1,34 @@
+// ここから下タブバーの実装
+
+//投稿ボタン
+.columns-area__panels__main .button.bottom_right {
+  position: fixed;
+  right: 18px;
+  bottom: 65px;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  width: 64px;
+  height: 64px;
+  font-size: 24px;
+  border-radius: 50%;
+}
+
+.tab-ber-bottom .timeline{
+  width:100%;
+  height: calc(100% - 55px);
+  margin: 0 0 50px 0;
+}
+
+.tab-ber-bottom .navber{
+  width:100%;
+  bottom: 0;
+  position: fixed;
+}
+
+.tab-ber-bottom .navber .tabs-bar__wrapper{
+  bottom: 0;
+  width: 100%;
+}
+
+//ここまで下タブバーの実装

app/lib/user_settings_decorator.rb

@@ -39,6 +39,7 @@ class UserSettingsDecorator
     user.settings['trends']              = trends_preference if change?('setting_trends')
     user.settings['crop_images']         = crop_images_preference if change?('setting_crop_images')
     user.settings['always_send_emails']  = always_send_emails_preference if change?('setting_always_send_emails')
+    user.settings['place_tab_bar_at_bottom']           = place_tab_bar_at_bottom_preference if change?('setting_place_tab_bar_at_bottom')
   end
 
   def merged_notification_emails
@@ -137,6 +138,14 @@ class UserSettingsDecorator
     boolean_cast_setting 'setting_always_send_emails'
   end
 
+  def place_tab_bar_at_bottom_preference
+    boolean_cast_setting 'setting_place_tab_bar_at_bottom'
+  end
+
+  def show_tab_bar_label_preference
+    boolean_cast_setting 'setting_show_tab_bar_label'
+  end
+
   def boolean_cast_setting(key)
     ActiveModel::Type::Boolean.new.cast(settings[key])
   end

app/models/user.rb

@@ -136,6 +136,7 @@ class User < ApplicationRecord
            :expand_spoilers, :default_language, :aggregate_reblogs, :show_application,
            :advanced_layout, :use_blurhash, :use_pending_items, :trends, :crop_images,
            :disable_swiping, :always_send_emails,
+           :place_tab_bar_at_bottom,
            to: :settings, prefix: :setting, allow_nil: false
 
   delegate :can?, to: :role

app/serializers/initial_state_serializer.rb

@@ -51,6 +51,7 @@ class InitialStateSerializer < ActiveModel::Serializer
       store[:use_pending_items] = object.current_account.user.setting_use_pending_items
       store[:trends]            = Setting.trends && object.current_account.user.setting_trends
       store[:crop_images]       = object.current_account.user.setting_crop_images
+      store[:place_tab_bar_at_bottom]           = object.current_account.user.setting_place_tab_bar_at_bottom
     else
       store[:auto_play_gif] = Setting.auto_play_gif
       store[:display_media] = Setting.display_media

app/views/layouts/application.html.haml

@@ -2,7 +2,7 @@
 %html{ lang: I18n.locale }
   %head
     %meta{ charset: 'utf-8' }/
-    %meta{ name: 'viewport', content: 'width=device-width, initial-scale=1' }/
+    %meta{ name: 'viewport', content: 'width=device-width, initial-scale=1, viewport-fit=cover'}/
 
     - if cdn_host?
       %link{ rel: 'dns-prefetch', href: cdn_host }/

app/views/settings/preferences/appearance/show.html.haml

@@ -32,6 +32,7 @@
     = f.input :setting_reduce_motion, as: :boolean, wrapper: :with_label
     = f.input :setting_disable_swiping, as: :boolean, wrapper: :with_label
     = f.input :setting_system_font_ui, as: :boolean, wrapper: :with_label
+    = f.input :setting_place_tab_bar_at_bottom, as: :boolean, wrapper: :with_label
 
   %h4= t 'appearance.toot_layout'
 

config/locales/simple_form.en.yml

@@ -56,6 +56,7 @@ en:
         setting_display_media_show_all: Always show media
         setting_hide_network: Who you follow and who follows you will be hidden on your profile
         setting_noindex: Affects your public profile and post pages
+        setting_place_tab_bar_at_bottom: Place the tab bar at the bottom
         setting_show_application: The application you use to post will be displayed in the detailed view of your posts
         setting_use_blurhash: Gradients are based on the colors of the hidden visuals but obfuscate any details
         setting_use_pending_items: Hide timeline updates behind a click instead of automatically scrolling the feed

config/locales/simple_form.ja.yml

@@ -209,6 +209,7 @@ ja:
         setting_expand_spoilers: 閲覧注意としてマークされたトゥートを常に展開する
         setting_hide_network: 繋がりを隠す
         setting_noindex: 検索エンジンによるインデックスを拒否する
+        setting_place_tab_bar_at_bottom: タブバーを下に配置する
         setting_reduce_motion: アニメーションの動きを減らす
         setting_show_application: 送信したアプリを開示する
         setting_system_font_ui: システムのデフォルトフォントを使う

config/settings.yml

@@ -38,6 +38,7 @@ defaults: &defaults
   trends_as_landing_page: true
   trendable_by_default: false
   crop_images: true
+  place_tab_bar_at_bottom: false
   notification_emails:
     follow: true
     reblog: false