mastodon/app/assets/javascripts/components/features/ui/index.jsx

import ColumnsArea            from './components/columns_area';
import NotificationsContainer from './containers/notifications_container';
import PureRenderMixin        from 'react-addons-pure-render-mixin';
import LoadingBarContainer    from './containers/loading_bar_container';
import HomeTimeline           from '../home_timeline';
import MentionsTimeline       from '../mentions_timeline';
import Compose                from '../compose';
import MediaQuery             from 'react-responsive';
import TabsBar                from './components/tabs_bar';

const UI = React.createClass({

  mixins: [PureRenderMixin],

  render () {
    const layoutBreakpoint = 1024;

    return (
      <div style={{ flex: '0 0 auto', display: 'flex', flexDirection: 'column', width: '100%', height: '100%', background: '#1a1c23' }}>
        <MediaQuery maxWidth={layoutBreakpoint}>
          <TabsBar />
        </MediaQuery>

        <MediaQuery maxWidth={layoutBreakpoint} component={ColumnsArea}>
          {this.props.children}
        </MediaQuery>

        <MediaQuery minWidth={layoutBreakpoint}>
          <ColumnsArea>
            <Compose />
            <HomeTimeline trackScroll={false} />
            <MentionsTimeline trackScroll={false} />
            {this.props.children}
          </ColumnsArea>
        </MediaQuery>

        <NotificationsContainer />
        <LoadingBarContainer style={{ backgroundColor: '#2b90d9', left: '0', top: '0' }} />
      </div>
    );
  }

});

export default UI;