Merge upstream!! #64 <3 <3

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

@@ -9,11 +9,11 @@ import LoadingIndicator from '../../components/loading_indicator';
 import Column from '../ui/components/column';
 import HeaderContainer from './containers/header_container';
 import ColumnBackButton from '../../components/column_back_button';
-import Immutable from 'immutable';
+import { List as ImmutableList } from 'immutable';
 import ImmutablePureComponent from 'react-immutable-pure-component';
 
 const mapStateToProps = (state, props) => ({
-  statusIds: state.getIn(['timelines', `account:${Number(props.params.accountId)}`, 'items'], Immutable.List()),
+  statusIds: state.getIn(['timelines', `account:${Number(props.params.accountId)}`, 'items'], ImmutableList()),
   isLoading: state.getIn(['timelines', `account:${Number(props.params.accountId)}`, 'isLoading']),
   hasMore: !!state.getIn(['timelines', `account:${Number(props.params.accountId)}`, 'next']),
   me: state.getIn(['meta', 'me']),

app/javascript/mastodon/features/compose/components/emoji_picker_dropdown.js

@@ -2,6 +2,7 @@ import React from 'react';
 import Dropdown, { DropdownTrigger, DropdownContent } from 'react-simple-dropdown';
 import PropTypes from 'prop-types';
 import { defineMessages, injectIntl } from 'react-intl';
+import { EmojiPicker as EmojiPickerAsync } from '../../ui/util/async-components';
 
 const messages = defineMessages({
   emoji: { id: 'emoji_button.label', defaultMessage: 'Insert emoji' },
@@ -50,7 +51,7 @@ export default class EmojiPickerDropdown extends React.PureComponent {
     this.setState({ active: true });
     if (!EmojiPicker) {
       this.setState({ loading: true });
-      import(/* webpackChunkName: "emojione_picker" */ 'emojione-picker').then(TheEmojiPicker => {
+      EmojiPickerAsync().then(TheEmojiPicker => {
         EmojiPicker = TheEmojiPicker.default;
         this.setState({ loading: false });
       }).catch(() => {

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

@@ -2,6 +2,7 @@ import React from 'react';
 import ComposeFormContainer from './containers/compose_form_container';
 import NavigationContainer from './containers/navigation_container';
 import PropTypes from 'prop-types';
+import ImmutablePropTypes from 'react-immutable-proptypes';
 import { connect } from 'react-redux';
 import { mountCompose, unmountCompose } from '../../actions/compose';
 import { openModal } from '../../actions/modal';
@@ -15,6 +16,8 @@ import SearchResultsContainer from './containers/search_results_container';
 
 const messages = defineMessages({
   start: { id: 'getting_started.heading', defaultMessage: 'Getting started' },
+  home_timeline: { id: 'tabs_bar.home', defaultMessage: 'Home' },
+  notifications: { id: 'tabs_bar.notifications', defaultMessage: 'Notifications' },
   public: { id: 'navigation_bar.public_timeline', defaultMessage: 'Federated timeline' },
   community: { id: 'navigation_bar.community_timeline', defaultMessage: 'Local timeline' },
   settings: { id: 'navigation_bar.app_settings', defaultMessage: 'App settings' },
@@ -22,6 +25,7 @@ const messages = defineMessages({
 });
 
 const mapStateToProps = state => ({
+  columns: state.getIn(['settings', 'columns']),
   showSearch: state.getIn(['search', 'submitted']) && !state.getIn(['search', 'hidden']),
 });
 
@@ -31,6 +35,7 @@ export default class Compose extends React.PureComponent {
 
   static propTypes = {
     dispatch: PropTypes.func.isRequired,
+    columns: ImmutablePropTypes.list.isRequired,
     multiColumn: PropTypes.bool,
     showSearch: PropTypes.bool,
     intl: PropTypes.object.isRequired,
@@ -60,11 +65,22 @@ export default class Compose extends React.PureComponent {
     let header = '';
 
     if (multiColumn) {
+      const { columns } = this.props;
       header = (
         <div className='drawer__header'>
           <Link to='/getting-started' className='drawer__tab' title={intl.formatMessage(messages.start)}><i role='img' aria-label={intl.formatMessage(messages.start)} className='fa fa-fw fa-asterisk' /></Link>
-          <Link to='/timelines/public/local' className='drawer__tab' title={intl.formatMessage(messages.community)}><i role='img' aria-label={intl.formatMessage(messages.community)} className='fa fa-fw fa-users' /></Link>
-          <Link to='/timelines/public' className='drawer__tab' title={intl.formatMessage(messages.public)}><i role='img' aria-label={intl.formatMessage(messages.public)} className='fa fa-fw fa-globe' /></Link>
+          {!columns.some(column => column.get('id') === 'HOME') && (
+            <Link to='/timelines/home' className='drawer__tab' title={intl.formatMessage(messages.home_timeline)}><i role='img' className='fa fa-fw fa-home' aria-label={intl.formatMessage(messages.home_timeline)} /></Link>
+          )}
+          {!columns.some(column => column.get('id') === 'NOTIFICATIONS') && (
+            <Link to='/notifications' className='drawer__tab' title={intl.formatMessage(messages.notifications)}><i role='img' className='fa fa-fw fa-bell' aria-label={intl.formatMessage(messages.notifications)} /></Link>
+          )}
+          {!columns.some(column => column.get('id') === 'COMMUNITY') && (
+            <Link to='/timelines/public/local' className='drawer__tab' title={intl.formatMessage(messages.community)}><i role='img' aria-label={intl.formatMessage(messages.community)} className='fa fa-fw fa-users' /></Link>
+          )}
+          {!columns.some(column => column.get('id') === 'PUBLIC') && (
+            <Link to='/timelines/public' className='drawer__tab' title={intl.formatMessage(messages.public)}><i role='img' aria-label={intl.formatMessage(messages.public)} className='fa fa-fw fa-globe' /></Link>
+          )}
           <a onClick={this.openSettings} role='button' tabIndex='0' className='drawer__tab' title={intl.formatMessage(messages.settings)}><i role='img' aria-label={intl.formatMessage(messages.settings)} className='fa fa-fw fa-cogs' /></a>
           <a href='/auth/sign_out' className='drawer__tab' data-method='delete' title={intl.formatMessage(messages.logout)}><i role='img' aria-label={intl.formatMessage(messages.logout)} className='fa fa-fw fa-sign-out' /></a>
         </div>

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

@@ -11,7 +11,7 @@ import { ScrollContainer } from 'react-router-scroll';
 import { defineMessages, injectIntl, FormattedMessage } from 'react-intl';
 import ColumnSettingsContainer from './containers/column_settings_container';
 import { createSelector } from 'reselect';
-import Immutable from 'immutable';
+import { List as ImmutableList } from 'immutable';
 import LoadMore from '../../components/load_more';
 import { debounce } from 'lodash';
 
@@ -20,7 +20,7 @@ const messages = defineMessages({
 });
 
 const getNotifications = createSelector([
-  state => Immutable.List(state.getIn(['settings', 'notifications', 'shows']).filter(item => !item).keys()),
+  state => ImmutableList(state.getIn(['settings', 'notifications', 'shows']).filter(item => !item).keys()),
   state => state.getIn(['notifications', 'items']),
 ], (excludedTypes, notifications) => notifications.filterNot(item => excludedTypes.includes(item.get('type'))));
 
@@ -122,7 +122,7 @@ export default class Notifications extends React.PureComponent {
     let unread         = '';
     let scrollContainer = '';
 
-    if (!isLoading && notifications.size > 0 && hasMore) {
+    if (!isLoading && hasMore) {
       loadMore = <LoadMore onClick={this.handleLoadMore} />;
     }
 
@@ -132,7 +132,7 @@ export default class Notifications extends React.PureComponent {
 
     if (isLoading && this.scrollableArea) {
       scrollableArea = this.scrollableArea;
-    } else if (notifications.size > 0) {
+    } else if (notifications.size > 0 || hasMore) {
       scrollableArea = (
         <div className='scrollable' onScroll={this.handleScroll} ref={this.setRef}>
           {unread}

app/javascript/mastodon/features/report/containers/status_check_box_container.js

@@ -1,11 +1,11 @@
 import { connect } from 'react-redux';
 import StatusCheckBox from '../components/status_check_box';
 import { toggleStatusReport } from '../../../actions/reports';
-import Immutable from 'immutable';
+import { Set as ImmutableSet } from 'immutable';
 
 const mapStateToProps = (state, { id }) => ({
   status: state.getIn(['statuses', id]),
-  checked: state.getIn(['reports', 'new', 'status_ids'], Immutable.Set()).includes(id),
+  checked: state.getIn(['reports', 'new', 'status_ids'], ImmutableSet()).includes(id),
 });
 
 const mapDispatchToProps = (dispatch, { id }) => ({

app/javascript/mastodon/features/standalone/public_timeline/index.js

@@ -0,0 +1,76 @@
+import React from 'react';
+import { connect } from 'react-redux';
+import PropTypes from 'prop-types';
+import StatusListContainer from '../../ui/containers/status_list_container';
+import {
+  refreshPublicTimeline,
+  expandPublicTimeline,
+} from '../../../actions/timelines';
+import Column from '../../../components/column';
+import ColumnHeader from '../../../components/column_header';
+import { defineMessages, injectIntl } from 'react-intl';
+
+const messages = defineMessages({
+  title: { id: 'standalone.public_title', defaultMessage: 'A look inside...' },
+});
+
+@connect()
+@injectIntl
+export default class PublicTimeline extends React.PureComponent {
+
+  static propTypes = {
+    dispatch: PropTypes.func.isRequired,
+    intl: PropTypes.object.isRequired,
+  };
+
+  handleHeaderClick = () => {
+    this.column.scrollTop();
+  }
+
+  setRef = c => {
+    this.column = c;
+  }
+
+  componentDidMount () {
+    const { dispatch } = this.props;
+
+    dispatch(refreshPublicTimeline());
+
+    this.polling = setInterval(() => {
+      dispatch(refreshPublicTimeline());
+    }, 3000);
+  }
+
+  componentWillUnmount () {
+    if (typeof this.polling !== 'undefined') {
+      clearInterval(this.polling);
+      this.polling = null;
+    }
+  }
+
+  handleLoadMore = () => {
+    this.props.dispatch(expandPublicTimeline());
+  }
+
+  render () {
+    const { intl } = this.props;
+
+    return (
+      <Column ref={this.setRef}>
+        <ColumnHeader
+          icon='globe'
+          title={intl.formatMessage(messages.title)}
+          onClick={this.handleHeaderClick}
+        />
+
+        <StatusListContainer
+          timelineId='public'
+          loadMore={this.handleLoadMore}
+          scrollKey='standalone_public_timeline'
+          trackScroll={false}
+        />
+      </Column>
+    );
+  }
+
+}

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

@@ -0,0 +1,101 @@
+import React from 'react';
+import PropTypes from 'prop-types';
+
+const emptyComponent = () => null;
+const noop = () => { };
+
+class Bundle extends React.Component {
+
+  static propTypes = {
+    fetchComponent: PropTypes.func.isRequired,
+    loading: PropTypes.func,
+    error: PropTypes.func,
+    children: PropTypes.func.isRequired,
+    renderDelay: PropTypes.number,
+    onFetch: PropTypes.func,
+    onFetchSuccess: PropTypes.func,
+    onFetchFail: PropTypes.func,
+  }
+
+  static defaultProps = {
+    loading: emptyComponent,
+    error: emptyComponent,
+    renderDelay: 0,
+    onFetch: noop,
+    onFetchSuccess: noop,
+    onFetchFail: noop,
+  }
+
+  static cache = {}
+
+  state = {
+    mod: undefined,
+    forceRender: false,
+  }
+
+  componentWillMount() {
+    this.load(this.props);
+  }
+
+  componentWillReceiveProps(nextProps) {
+    if (nextProps.fetchComponent !== this.props.fetchComponent) {
+      this.load(nextProps);
+    }
+  }
+
+  componentWillUnmount () {
+    if (this.timeout) {
+      clearTimeout(this.timeout);
+    }
+  }
+
+  load = (props) => {
+    const { fetchComponent, onFetch, onFetchSuccess, onFetchFail, renderDelay } = props || this.props;
+
+    this.setState({ mod: undefined });
+    onFetch();
+
+    if (renderDelay !== 0) {
+      this.timestamp = new Date();
+      this.timeout = setTimeout(() => this.setState({ forceRender: true }), renderDelay);
+    }
+
+    if (Bundle.cache[fetchComponent.name]) {
+      const mod = Bundle.cache[fetchComponent.name];
+
+      this.setState({ mod: mod.default });
+      onFetchSuccess();
+      return Promise.resolve();
+    }
+
+    return fetchComponent()
+      .then((mod) => {
+        Bundle.cache[fetchComponent.name] = mod;
+        this.setState({ mod: mod.default });
+        onFetchSuccess();
+      })
+      .catch((error) => {
+        this.setState({ mod: null });
+        onFetchFail(error);
+      });
+  }
+
+  render() {
+    const { loading: Loading, error: Error, children, renderDelay } = this.props;
+    const { mod, forceRender } = this.state;
+    const elapsed = this.timestamp ? (new Date() - this.timestamp) : renderDelay;
+
+    if (mod === undefined) {
+      return (elapsed >= renderDelay || forceRender) ? <Loading /> : null;
+    }
+
+    if (mod === null) {
+      return <Error onRetry={this.load} />;
+    }
+
+    return children(mod);
+  }
+
+}
+
+export default Bundle;

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

@@ -0,0 +1,44 @@
+import React from 'react';
+import PropTypes from 'prop-types';
+import { defineMessages, injectIntl } from 'react-intl';
+
+import Column from './column';
+import ColumnHeader from './column_header';
+import ColumnBackButtonSlim from '../../../components/column_back_button_slim';
+import IconButton from '../../../components/icon_button';
+
+const messages = defineMessages({
+  title: { id: 'bundle_column_error.title', defaultMessage: 'Network error' },
+  body: { id: 'bundle_column_error.body', defaultMessage: 'Something went wrong while loading this component.' },
+  retry: { id: 'bundle_column_error.retry', defaultMessage: 'Try again' },
+});
+
+class BundleColumnError extends React.Component {
+
+  static propTypes = {
+    onRetry: PropTypes.func.isRequired,
+    intl: PropTypes.object.isRequired,
+  }
+
+  handleRetry = () => {
+    this.props.onRetry();
+  }
+
+  render () {
+    const { intl: { formatMessage } } = this.props;
+
+    return (
+      <Column>
+        <ColumnHeader icon='exclamation-circle' type={formatMessage(messages.title)} />
+        <ColumnBackButtonSlim />
+        <div className='error-column'>
+          <IconButton title={formatMessage(messages.retry)} icon='refresh' onClick={this.handleRetry} size={64} />
+          {formatMessage(messages.body)}
+        </div>
+      </Column>
+    );
+  }
+
+}
+
+export default injectIntl(BundleColumnError);

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

@@ -0,0 +1,53 @@
+import React from 'react';
+import PropTypes from 'prop-types';
+import { defineMessages, injectIntl } from 'react-intl';
+
+import IconButton from '../../../components/icon_button';
+
+const messages = defineMessages({
+  error: { id: 'bundle_modal_error.message', defaultMessage: 'Something went wrong while loading this component.' },
+  retry: { id: 'bundle_modal_error.retry', defaultMessage: 'Try again' },
+  close: { id: 'bundle_modal_error.close', defaultMessage: 'Close' },
+});
+
+class BundleModalError extends React.Component {
+
+  static propTypes = {
+    onRetry: PropTypes.func.isRequired,
+    onClose: PropTypes.func.isRequired,
+    intl: PropTypes.object.isRequired,
+  }
+
+  handleRetry = () => {
+    this.props.onRetry();
+  }
+
+  render () {
+    const { onClose, intl: { formatMessage } } = this.props;
+
+    // Keep the markup in sync with <ModalLoading />
+    // (make sure they have the same dimensions)
+    return (
+      <div className='modal-root__modal error-modal'>
+        <div className='error-modal__body'>
+          <IconButton title={formatMessage(messages.retry)} icon='refresh' onClick={this.handleRetry} size={64} />
+          {formatMessage(messages.error)}
+        </div>
+
+        <div className='error-modal__footer'>
+          <div>
+            <button
+              onClick={onClose}
+              className='error-modal__nav onboarding-modal__skip'
+            >
+              {formatMessage(messages.close)}
+            </button>
+          </div>
+        </div>
+      </div>
+    );
+  }
+
+}
+
+export default injectIntl(BundleModalError);

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

@@ -0,0 +1,19 @@
+import React from 'react';
+import PropTypes from 'prop-types';
+
+import Column from '../../../components/column';
+import ColumnHeader from '../../../components/column_header';
+
+const ColumnLoading = ({ title = '', icon = ' ' }) => (
+  <Column>
+    <ColumnHeader icon={icon} title={title} multiColumn={false} />
+    <div className='scrollable' />
+  </Column>
+);
+
+ColumnLoading.propTypes = {
+  title: PropTypes.node,
+  icon: PropTypes.string,
+};
+
+export default ColumnLoading;

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

@@ -2,14 +2,14 @@ import React from 'react';
 import PropTypes from 'prop-types';
 import ImmutablePropTypes from 'react-immutable-proptypes';
 import ImmutablePureComponent from 'react-immutable-pure-component';
-import ReactSwipeable from 'react-swipeable';
-import HomeTimeline from '../../home_timeline';
-import Notifications from '../../notifications';
-import PublicTimeline from '../../public_timeline';
-import CommunityTimeline from '../../community_timeline';
-import HashtagTimeline from '../../hashtag_timeline';
-import Compose from '../../compose';
-import { getPreviousLink, getNextLink } from './tabs_bar';
+
+import ReactSwipeableViews from 'react-swipeable-views';
+import { links, getIndex, getLink } from './tabs_bar';
+
+import BundleContainer from '../containers/bundle_container';
+import ColumnLoading from './column_loading';
+import BundleColumnError from './bundle_column_error';
+import { Compose, Notifications, HomeTimeline, CommunityTimeline, PublicTimeline, HashtagTimeline } from '../../ui/util/async-components';
 
 const componentMap = {
   'COMPOSE': Compose,
@@ -32,39 +32,61 @@ export default class ColumnsArea extends ImmutablePureComponent {
     children: PropTypes.node,
   };
 
-  handleRightSwipe = () => {
-    const previousLink = getPreviousLink(this.context.router.history.location.pathname);
-
-    if (previousLink) {
-      this.context.router.history.push(previousLink);
-    }
+  handleSwipe = (index) => {
+    window.requestAnimationFrame(() => {
+      window.requestAnimationFrame(() => {
+        this.context.router.history.push(getLink(index));
+      });
+    });
   }
 
-  handleLeftSwipe = () => {
-    const previousLink = getNextLink(this.context.router.history.location.pathname);
+  renderView = (link, index) => {
+    const columnIndex = getIndex(this.context.router.history.location.pathname);
+    const title = link.props.children[1] && React.cloneElement(link.props.children[1]);
+    const icon = (link.props.children[0] || link.props.children).props.className.split(' ')[2].split('-')[1];
 
-    if (previousLink) {
-      this.context.router.history.push(previousLink);
-    }
-  };
+    const view = (index === columnIndex) ?
+      React.cloneElement(this.props.children) :
+      <ColumnLoading title={title} icon={icon} />;
+
+    return (
+      <div className='columns-area' key={index}>
+        {view}
+      </div>
+    );
+  }
+
+  renderLoading = () => {
+    return <ColumnLoading />;
+  }
+
+  renderError = (props) => {
+    return <BundleColumnError {...props} />;
+  }
 
   render () {
     const { columns, children, singleColumn } = this.props;
 
+    const columnIndex = getIndex(this.context.router.history.location.pathname);
+
     if (singleColumn) {
-      return (
-        <ReactSwipeable onSwipedLeft={this.handleLeftSwipe} onSwipedRight={this.handleRightSwipe} className='columns-area'>
-          {children}
-        </ReactSwipeable>
-      );
+      return columnIndex !== -1 ? (
+        <ReactSwipeableViews index={columnIndex} onChangeIndex={this.handleSwipe} animateTransitions={false} style={{ height: '100%' }}>
+          {links.map(this.renderView)}
+        </ReactSwipeableViews>
+      ) : <div className='columns-area'>{children}</div>;
     }
 
     return (
       <div className='columns-area'>
         {columns.map(column => {
-          const SpecificComponent = componentMap[column.get('id')];
           const params = column.get('params', null) === null ? null : column.get('params').toJS();
-          return <SpecificComponent key={column.get('uuid')} columnId={column.get('uuid')} params={params} multiColumn />;
+
+          return (
+            <BundleContainer key={column.get('uuid')} fetchComponent={componentMap[column.get('id')]} loading={this.renderLoading} error={this.renderError}>
+              {SpecificComponent => <SpecificComponent columnId={column.get('uuid')} params={params} multiColumn />}
+            </BundleContainer>
+          );
         })}
 
         {React.Children.map(children, child => React.cloneElement(child, { multiColumn: true }))}

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

@@ -8,12 +8,14 @@ export default class ImageLoader extends React.PureComponent {
     alt: PropTypes.string,
     src: PropTypes.string.isRequired,
     previewSrc: PropTypes.string.isRequired,
-    width: PropTypes.number.isRequired,
-    height: PropTypes.number.isRequired,
+    width: PropTypes.number,
+    height: PropTypes.number,
   }
 
   static defaultProps = {
     alt: '',
+    width: null,
+    height: null,
   };
 
   state = {
@@ -46,8 +48,8 @@ export default class ImageLoader extends React.PureComponent {
     this.setState({ loading: true, error: false });
     Promise.all([
       this.loadPreviewCanvas(props),
-      this.loadOriginalImage(props),
-    ])
+      this.hasSize() && this.loadOriginalImage(props),
+    ].filter(Boolean))
       .then(() => {
         this.setState({ loading: false, error: false });
         this.clearPreviewCanvas();
@@ -106,6 +108,11 @@ export default class ImageLoader extends React.PureComponent {
     this.removers = [];
   }
 
+  hasSize () {
+    const { width, height } = this.props;
+    return typeof width === 'number' && typeof height === 'number';
+  }
+
   setCanvasRef = c => {
     this.canvas = c;
   }
@@ -116,6 +123,7 @@ export default class ImageLoader extends React.PureComponent {
 
     const className = classNames('image-loader', {
       'image-loader--loading': loading,
+      'image-loader--amorphous': !this.hasSize(),
     });
 
     return (
@@ -125,6 +133,7 @@ export default class ImageLoader extends React.PureComponent {
           width={width}
           height={height}
           ref={this.setCanvasRef}
+          style={{ opacity: loading ? 1 : 0 }}
         />
 
         {!loading && (

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

@@ -1,5 +1,5 @@
 import React from 'react';
-import ReactSwipeable from 'react-swipeable';
+import ReactSwipeableViews from 'react-swipeable-views';
 import ImmutablePropTypes from 'react-immutable-proptypes';
 import PropTypes from 'prop-types';
 import ExtendedVideoPlayer from '../../../components/extended_video_player';
@@ -26,12 +26,16 @@ export default class MediaModal extends ImmutablePureComponent {
     index: null,
   };
 
+  handleSwipe = (index) => {
+    this.setState({ index: (index) % this.props.media.size });
+  }
+
   handleNextClick = () => {
     this.setState({ index: (this.getIndex() + 1) % this.props.media.size });
   }
 
   handlePrevClick = () => {
-    this.setState({ index: (this.getIndex() - 1) % this.props.media.size });
+    this.setState({ index: (this.props.media.size + this.getIndex() - 1) % this.props.media.size });
   }
 
   handleKeyUp = (e) => {
@@ -74,7 +78,12 @@ export default class MediaModal extends ImmutablePureComponent {
     }
 
     if (attachment.get('type') === 'image') {
-      content = <ImageLoader previewSrc={attachment.get('preview_url')} src={url} width={attachment.getIn(['meta', 'original', 'width'])} height={attachment.getIn(['meta', 'original', 'height'])} />;
+      content = media.map((image) => {
+        const width  = image.getIn(['meta', 'original', 'width']) || null;
+        const height = image.getIn(['meta', 'original', 'height']) || null;
+
+        return <ImageLoader previewSrc={image.get('preview_url')} src={image.get('url')} width={width} height={height} key={image.get('preview_url')} />;
+      }).toArray();
     } else if (attachment.get('type') === 'gifv') {
       content = <ExtendedVideoPlayer src={url} muted controls={false} />;
     }
@@ -85,9 +94,9 @@ export default class MediaModal extends ImmutablePureComponent {
 
         <div className='media-modal__content'>
           <IconButton className='media-modal__close' title={intl.formatMessage(messages.close)} icon='times' onClick={onClose} size={16} />
-          <ReactSwipeable onSwipedRight={this.handlePrevClick} onSwipedLeft={this.handleNextClick}>
+          <ReactSwipeableViews onChangeIndex={this.handleSwipe} index={index} animateHeight>
             {content}
-          </ReactSwipeable>
+          </ReactSwipeableViews>
         </div>
 
         {rightNav}

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

@@ -0,0 +1,20 @@
+import React from 'react';
+
+import LoadingIndicator from '../../../components/loading_indicator';
+
+// Keep the markup in sync with <BundleModalError />
+// (make sure they have the same dimensions)
+const ModalLoading = () => (
+  <div className='modal-root__modal error-modal'>
+    <div className='error-modal__body'>
+      <LoadingIndicator />
+    </div>
+    <div className='error-modal__footer'>
+      <div>
+        <button className='error-modal__nav onboarding-modal__skip' />
+      </div>
+    </div>
+  </div>
+);
+
+export default ModalLoading;

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

@@ -1,14 +1,19 @@
 import React from 'react';
 import PropTypes from 'prop-types';
-import MediaModal from './media_modal';
-import OnboardingModal from './onboarding_modal';
-import VideoModal from './video_modal';
-import BoostModal from './boost_modal';
-import ConfirmationModal from './confirmation_modal';
-import ReportModal from './report_modal';
-import SettingsContainer from '../../../../glitch/containers/settings';
 import TransitionMotion from 'react-motion/lib/TransitionMotion';
 import spring from 'react-motion/lib/spring';
+import BundleContainer from '../containers/bundle_container';
+import BundleModalError from './bundle_modal_error';
+import ModalLoading from './modal_loading';
+import {
+  MediaModal,
+  OnboardingModal,
+  VideoModal,
+  BoostModal,
+  ConfirmationModal,
+  ReportModal,
+  SettingsModal,
+} from '../../../features/ui/util/async-components';
 
 const MODAL_COMPONENTS = {
   'MEDIA': MediaModal,
@@ -17,7 +22,7 @@ const MODAL_COMPONENTS = {
   'BOOST': BoostModal,
   'CONFIRM': ConfirmationModal,
   'REPORT': ReportModal,
-  'SETTINGS': SettingsContainer,
+  'SETTINGS': SettingsModal,
 };
 
 export default class ModalRoot extends React.PureComponent {
@@ -51,6 +56,22 @@ export default class ModalRoot extends React.PureComponent {
     return { opacity: spring(0), scale: spring(0.98) };
   }
 
+  renderModal = (SpecificComponent) => {
+    const { props, onClose } = this.props;
+
+    return <SpecificComponent {...props} onClose={onClose} />;
+  }
+
+  renderLoading = () => {
+    return <ModalLoading />;
+  }
+
+  renderError = (props) => {
+    const { onClose } = this.props;
+
+    return <BundleModalError {...props} onClose={onClose} />;
+  }
+
   render () {
     const { type, props, onClose } = this.props;
     const visible = !!type;
@@ -72,18 +93,14 @@ export default class ModalRoot extends React.PureComponent {
       >
         {interpolatedStyles =>
           <div className='modal-root'>
-            {interpolatedStyles.map(({ key, data: { type, props }, style }) => {
-              const SpecificComponent = MODAL_COMPONENTS[type];
-
-              return (
-                <div key={key} style={{ pointerEvents: visible ? 'auto' : 'none' }}>
-                  <div role='presentation' className='modal-root__overlay' style={{ opacity: style.opacity }} onClick={onClose} />
-                  <div className='modal-root__container' style={{ opacity: style.opacity, transform: `translateZ(0px) scale(${style.scale})` }}>
-                    <SpecificComponent {...props} onClose={onClose} />
-                  </div>
+            {interpolatedStyles.map(({ key, data: { type }, style }) => (
+              <div key={key} style={{ pointerEvents: visible ? 'auto' : 'none' }}>
+                <div role='presentation' className='modal-root__overlay' style={{ opacity: style.opacity }} onClick={onClose} />
+                <div className='modal-root__container' style={{ opacity: style.opacity, transform: `translateZ(0px) scale(${style.scale})` }}>
+                  <BundleContainer fetchComponent={MODAL_COMPONENTS[type]} loading={this.renderLoading} error={this.renderError} renderDelay={200}>{this.renderModal}</BundleContainer>
                 </div>
-              );
-            })}
+              </div>
+            ))}
           </div>
         }
       </TransitionMotion>

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

@@ -3,16 +3,14 @@ import { connect } from 'react-redux';
 import PropTypes from 'prop-types';
 import ImmutablePropTypes from 'react-immutable-proptypes';
 import { defineMessages, injectIntl, FormattedMessage } from 'react-intl';
-import ReactSwipeable from 'react-swipeable';
+import ReactSwipeableViews from 'react-swipeable-views';
 import classNames from 'classnames';
 import Permalink from '../../../components/permalink';
-import TransitionMotion from 'react-motion/lib/TransitionMotion';
-import spring from 'react-motion/lib/spring';
 import ComposeForm from '../../compose/components/compose_form';
 import Search from '../../compose/components/search';
 import NavigationBar from '../../compose/components/navigation_bar';
 import ColumnHeader from './column_header';
-import Immutable from 'immutable';
+import { List as ImmutableList } from 'immutable';
 
 const noop = () => { };
 
@@ -50,7 +48,7 @@ const PageTwo = ({ me }) => (
       </div>
       <ComposeForm
         text='Awoo! #introductions'
-        suggestions={Immutable.List()}
+        suggestions={ImmutableList()}
         mentionedDomains={[]}
         spoiler={false}
         onChange={noop}
@@ -227,6 +225,10 @@ export default class OnboardingModal extends React.PureComponent {
     }));
   }
 
+  handleSwipe = (index) => {
+    this.setState({ currentIndex: index });
+  }
+
   handleKeyUp = ({ key }) => {
     switch (key) {
     case 'ArrowLeft':
@@ -263,30 +265,18 @@ export default class OnboardingModal extends React.PureComponent {
       </button>
     );
 
-    const styles = pages.map((data, i) => ({
-      key: `page-${i}`,
-      data,
-      style: {
-        opacity: spring(i === currentIndex ? 1 : 0),
-      },
-    }));
-
     return (
       <div className='modal-root__modal onboarding-modal'>
-        <TransitionMotion styles={styles}>
-          {interpolatedStyles => (
-            <ReactSwipeable onSwipedRight={this.handlePrev} onSwipedLeft={this.handleNext} className='onboarding-modal__pager'>
-              {interpolatedStyles.map(({ key, data, style }, i) => {
-                const className = classNames('onboarding-modal__page__wrapper', {
-                  'onboarding-modal__page__wrapper--active': i === currentIndex,
-                });
-                return (
-                  <div key={key} style={style} className={className}>{data}</div>
-                );
-              })}
-            </ReactSwipeable>
-          )}
-        </TransitionMotion>
+        <ReactSwipeableViews index={currentIndex} onChangeIndex={this.handleSwipe} className='onboarding-modal__pager'>
+          {pages.map((page, i) => {
+            const className = classNames('onboarding-modal__page__wrapper', {
+              'onboarding-modal__page__wrapper--active': i === currentIndex,
+            });
+            return (
+              <div key={i} className={className}>{page}</div>
+            );
+          })}
+        </ReactSwipeableViews>
 
         <div className='onboarding-modal__paginator'>
           <div>

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

@@ -7,7 +7,7 @@ import ImmutablePropTypes from 'react-immutable-proptypes';
 import { makeGetAccount } from '../../../selectors';
 import { defineMessages, FormattedMessage, injectIntl } from 'react-intl';
 import StatusCheckBox from '../../report/containers/status_check_box_container';
-import Immutable from 'immutable';
+import { OrderedSet } from 'immutable';
 import ImmutablePureComponent from 'react-immutable-pure-component';
 import Button from '../../../components/button';
 
@@ -26,7 +26,7 @@ const makeMapStateToProps = () => {
       isSubmitting: state.getIn(['reports', 'new', 'isSubmitting']),
       account: getAccount(state, accountId),
       comment: state.getIn(['reports', 'new', 'comment']),
-      statusIds: Immutable.OrderedSet(state.getIn(['timelines', `account:${accountId}`, 'items'])).union(state.getIn(['reports', 'new', 'status_ids'])),
+      statusIds: OrderedSet(state.getIn(['timelines', `account:${accountId}`, 'items'])).union(state.getIn(['reports', 'new', 'status_ids'])),
     };
   };
 

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

@@ -2,7 +2,7 @@ import React from 'react';
 import NavLink from 'react-router-dom/NavLink';
 import { FormattedMessage } from 'react-intl';
 
-const links = [
+export const links = [
   <NavLink className='tabs-bar__link primary' activeClassName='active' to='/statuses/new'><i className='fa fa-fw fa-pencil' /><FormattedMessage id='tabs_bar.compose' defaultMessage='Compose' /></NavLink>,
   <NavLink className='tabs-bar__link primary' activeClassName='active' to='/timelines/home'><i className='fa fa-fw fa-home' /><FormattedMessage id='tabs_bar.home' defaultMessage='Home' /></NavLink>,
   <NavLink className='tabs-bar__link primary' activeClassName='active' to='/notifications'><i className='fa fa-fw fa-bell' /><FormattedMessage id='tabs_bar.notifications' defaultMessage='Notifications' /></NavLink>,
@@ -13,25 +13,13 @@ const links = [
   <NavLink className='tabs-bar__link primary' activeClassName='active' style={{ flexGrow: '0', flexBasis: '30px' }} to='/getting-started'><i className='fa fa-fw fa-asterisk' /></NavLink>,
 ];
 
-export function getPreviousLink (path) {
-  const index = links.findIndex(link => link.props.to === path);
+export function getIndex (path) {
+  return links.findIndex(link => link.props.to === path);
+}
 
-  if (index > 0) {
-    return links[index - 1].props.to;
-  }
-
-  return null;
-};
-
-export function getNextLink (path) {
-  const index = links.findIndex(link => link.props.to === path);
-
-  if (index !== -1 && index < links.length - 1) {
-    return links[index + 1].props.to;
-  }
-
-  return null;
-};
+export function getLink (index) {
+  return links[index].props.to;
+}
 
 export default class TabsBar extends React.Component {
 

app/javascript/mastodon/features/ui/containers/bundle_container.js

@@ -0,0 +1,19 @@
+import { connect } from 'react-redux';
+
+import Bundle from '../components/bundle';
+
+import { fetchBundleRequest, fetchBundleSuccess, fetchBundleFail } from '../../../actions/bundles';
+
+const mapDispatchToProps = dispatch => ({
+  onFetch () {
+    dispatch(fetchBundleRequest());
+  },
+  onFetchSuccess () {
+    dispatch(fetchBundleSuccess());
+  },
+  onFetchFail (error) {
+    dispatch(fetchBundleFail(error));
+  },
+});
+
+export default connect(null, mapDispatchToProps)(Bundle);

app/javascript/mastodon/features/ui/containers/status_list_container.js

@@ -1,13 +1,13 @@
 import { connect } from 'react-redux';
 import StatusList from '../../../components/status_list';
 import { scrollTopTimeline } from '../../../actions/timelines';
-import Immutable from 'immutable';
+import { Map as ImmutableMap, List as ImmutableList } from 'immutable';
 import { createSelector } from 'reselect';
 import { debounce } from 'lodash';
 
 const makeGetStatusIds = () => createSelector([
-  (state, { type }) => state.getIn(['settings', type], Immutable.Map()),
-  (state, { type }) => state.getIn(['timelines', type, 'items'], Immutable.List()),
+  (state, { type }) => state.getIn(['settings', type], ImmutableMap()),
+  (state, { type }) => state.getIn(['timelines', type, 'items'], ImmutableList()),
   (state)           => state.get('statuses'),
   (state)           => state.getIn(['meta', 'me']),
 ], (columnSettings, statusIds, statuses, me) => statusIds.filter(id => {

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

@@ -1,6 +1,5 @@
 import React from 'react';
-import Switch from 'react-router-dom/Switch';
-import Route from 'react-router-dom/Route';
+import classNames from 'classnames';
 import Redirect from 'react-router-dom/Redirect';
 import NotificationsContainer from './containers/notifications_container';
 import PropTypes from 'prop-types';
@@ -13,66 +12,37 @@ import { debounce } from 'lodash';
 import { uploadCompose } from '../../actions/compose';
 import { refreshHomeTimeline } from '../../actions/timelines';
 import { refreshNotifications } from '../../actions/notifications';
+import { WrappedSwitch, WrappedRoute } from './util/react_router_helpers';
 import UploadArea from './components/upload_area';
 import ColumnsAreaContainer from './containers/columns_area_container';
-import Status from '../../features/status';
-import GettingStarted from '../../features/getting_started';
-import PublicTimeline from '../../features/public_timeline';
-import CommunityTimeline from '../../features/community_timeline';
-import AccountTimeline from '../../features/account_timeline';
-import AccountGallery from '../../features/account_gallery';
-import HomeTimeline from '../../features/home_timeline';
-import Compose from '../../features/compose';
-import Followers from '../../features/followers';
-import Following from '../../features/following';
-import Reblogs from '../../features/reblogs';
-import Favourites from '../../features/favourites';
-import HashtagTimeline from '../../features/hashtag_timeline';
-import Notifications from '../../features/notifications';
-import FollowRequests from '../../features/follow_requests';
-import GenericNotFound from '../../features/generic_not_found';
-import FavouritedStatuses from '../../features/favourited_statuses';
-import Blocks from '../../features/blocks';
-import Mutes from '../../features/mutes';
+import {
+  Compose,
+  Status,
+  GettingStarted,
+  PublicTimeline,
+  CommunityTimeline,
+  AccountTimeline,
+  AccountGallery,
+  HomeTimeline,
+  Followers,
+  Following,
+  Reblogs,
+  Favourites,
+  HashtagTimeline,
+  Notifications,
+  FollowRequests,
+  GenericNotFound,
+  FavouritedStatuses,
+  Blocks,
+  Mutes,
+} from './util/async-components';
 
-// Small wrapper to pass multiColumn to the route components
-const WrappedSwitch = ({ multiColumn, children }) => (
-  <Switch>
-    {React.Children.map(children, child => React.cloneElement(child, { multiColumn }))}
-  </Switch>
-);
-
-WrappedSwitch.propTypes = {
-  multiColumn: PropTypes.bool,
-  children: PropTypes.node,
-};
-
-// Small Wraper to extract the params from the route and pass
-// them to the rendered component, together with the content to
-// be rendered inside (the children)
-class WrappedRoute extends React.Component {
-
-  static propTypes = {
-    component: PropTypes.func.isRequired,
-    content: PropTypes.node,
-    multiColumn: PropTypes.bool,
-  }
-
-  renderComponent = ({ match: { params } }) => {
-    const { component: Component, content, multiColumn } = this.props;
-
-    return <Component params={params} multiColumn={multiColumn}>{content}</Component>;
-  }
-
-  render () {
-    const { component: Component, content, ...rest } = this.props;
-
-    return <Route {...rest} render={this.renderComponent} />;
-  }
-
-}
+// Dummy import, to make sure that <Status /> ends up in the application bundle.
+// Without this it ends up in ~8 very commonly used bundles.
+import '../../../glitch/components/status';
 
 const mapStateToProps = state => ({
+  systemFontUi: state.getIn(['meta', 'system_font_ui']),
   layout: state.getIn(['local_settings', 'layout']),
   isWide: state.getIn(['local_settings', 'stretch']),
 });
@@ -85,6 +55,7 @@ export default class UI extends React.PureComponent {
     children: PropTypes.node,
     layout: PropTypes.string,
     isWide: PropTypes.bool,
+    systemFontUi: PropTypes.bool,
   };
 
   state = {
@@ -194,8 +165,13 @@ export default class UI extends React.PureComponent {
       }
     };
 
+    const className = classNames('ui', columnsClass(layout), {
+      'wide': isWide,
+      'system-font': this.props.systemFontUi,
+    });
+
     return (
-      <div className={'ui ' + columnsClass(layout) + (isWide ? ' wide' : '')} ref={this.setRef}>
+      <div className={className} ref={this.setRef}>
         <TabsBar />
         <ColumnsAreaContainer singleColumn={isMobile(width, layout)}>
           <WrappedSwitch>

app/javascript/mastodon/features/ui/util/get_rect_from_entry.js

@@ -0,0 +1,21 @@
+
+// Get the bounding client rect from an IntersectionObserver entry.
+// This is to work around a bug in Chrome: https://crbug.com/737228
+
+let hasBoundingRectBug;
+
+function getRectFromEntry(entry) {
+  if (typeof hasBoundingRectBug !== 'boolean') {
+    const boundingRect = entry.target.getBoundingClientRect();
+    const observerRect = entry.boundingClientRect;
+    hasBoundingRectBug = boundingRect.height !== observerRect.height ||
+      boundingRect.top !== observerRect.top ||
+      boundingRect.width !== observerRect.width ||
+      boundingRect.bottom !== observerRect.bottom ||
+      boundingRect.left !== observerRect.left ||
+      boundingRect.right !== observerRect.right;
+  }
+  return hasBoundingRectBug ? entry.target.getBoundingClientRect() : entry.boundingClientRect;
+}
+
+export default getRectFromEntry;

app/javascript/mastodon/features/ui/util/intersection_observer_wrapper.js

@@ -37,9 +37,18 @@ class IntersectionObserverWrapper {
     }
   }
 
+  unobserve (id, node) {
+    if (this.observer) {
+      delete this.callbacks[id];
+      this.observer.unobserve(node);
+    }
+  }
+
   disconnect () {
     if (this.observer) {
+      this.callbacks = {};
       this.observer.disconnect();
+      this.observer = null;
     }
   }
 

app/javascript/mastodon/features/ui/util/react_router_helpers.js

@@ -0,0 +1,57 @@
+import React from 'react';
+import PropTypes from 'prop-types';
+import Switch from 'react-router-dom/Switch';
+import Route from 'react-router-dom/Route';
+
+import ColumnLoading from '../components/column_loading';
+import BundleColumnError from '../components/bundle_column_error';
+import BundleContainer from '../containers/bundle_container';
+
+// Small wrapper to pass multiColumn to the route components
+export const WrappedSwitch = ({ multiColumn, children }) => (
+  <Switch>
+    {React.Children.map(children, child => React.cloneElement(child, { multiColumn }))}
+  </Switch>
+);
+
+WrappedSwitch.propTypes = {
+  multiColumn: PropTypes.bool,
+  children: PropTypes.node,
+};
+
+// Small Wraper to extract the params from the route and pass
+// them to the rendered component, together with the content to
+// be rendered inside (the children)
+export class WrappedRoute extends React.Component {
+
+  static propTypes = {
+    component: PropTypes.func.isRequired,
+    content: PropTypes.node,
+    multiColumn: PropTypes.bool,
+  }
+
+  renderComponent = ({ match }) => {
+    const { component, content, multiColumn } = this.props;
+
+    return (
+      <BundleContainer fetchComponent={component} loading={this.renderLoading} error={this.renderError}>
+        {Component => <Component params={match.params} multiColumn={multiColumn}>{content}</Component>}
+      </BundleContainer>
+    );
+  }
+
+  renderLoading = () => {
+    return <ColumnLoading />;
+  }
+
+  renderError = (props) => {
+    return <BundleColumnError {...props} />;
+  }
+
+  render () {
+    const { component: Component, content, ...rest } = this.props;
+
+    return <Route {...rest} render={this.renderComponent} />;
+  }
+
+}