content: import React from 'react';
  import { connect } from 'react-redux';
  import PropTypes from 'prop-types';
  import ImmutablePropTypes from 'react-immutable-proptypes';
  import LoadingIndicator from '../../components/loading_indicator';
  import {
    fetchAccount,
    fetchFollowing,
    expandFollowing,
  } from '../../actions/accounts';
  import { ScrollContainer } from 'react-router-scroll-4';
  import AccountContainer from '../../containers/account_container';
  import Column from '../ui/components/column';
  import HeaderContainer from '../account_timeline/containers/header_container';
  import LoadMore from '../../components/load_more';
  import ColumnBackButton from '../../components/column_back_button';
  import ImmutablePureComponent from 'react-immutable-pure-component';
  
  const mapStateToProps = (state, props) => ({
    accountIds: state.getIn(['user_lists', 'following', props.params.accountId, 'items']),
    hasMore: !!state.getIn(['user_lists', 'following', props.params.accountId, 'next']),
  });
  
  @connect(mapStateToProps)
  export default class Following extends ImmutablePureComponent {
  
    static propTypes = {
      params: PropTypes.object.isRequired,
      dispatch: PropTypes.func.isRequired,
      accountIds: ImmutablePropTypes.list,
      hasMore: PropTypes.bool,
    };
  
    componentWillMount () {
      this.props.dispatch(fetchAccount(this.props.params.accountId));
      this.props.dispatch(fetchFollowing(this.props.params.accountId));
    }
  
    componentWillReceiveProps (nextProps) {
      if (nextProps.params.accountId !== this.props.params.accountId && nextProps.params.accountId) {
        this.props.dispatch(fetchAccount(nextProps.params.accountId));
        this.props.dispatch(fetchFollowing(nextProps.params.accountId));
      }
    }
  
    handleScroll = (e) => {
      const { scrollTop, scrollHeight, clientHeight } = e.target;
  
      if (scrollTop === scrollHeight - clientHeight && this.props.hasMore) {
        this.props.dispatch(expandFollowing(this.props.params.accountId));
      }
    }
  
    handleLoadMore = (e) => {
      e.preventDefault();
      this.props.dispatch(expandFollowing(this.props.params.accountId));
    }
  
    render () {
      const { accountIds, hasMore } = this.props;
  
      let loadMore = null;
  
      if (!accountIds) {
        return (
          <Column>
            <LoadingIndicator />
          </Column>
        );
      }
  
      if (hasMore) {
        loadMore = <LoadMore onClick={this.handleLoadMore} />;
      }
  
      return (
        <Column>
          <ColumnBackButton />
  
          <ScrollContainer scrollKey='following'>
            <div className='scrollable' onScroll={this.handleScroll}>
              <div className='following'>
                <HeaderContainer accountId={this.props.params.accountId} hideTabs />
                {accountIds.map(id => <AccountContainer key={id} id={id} withNote={false} />)}
                {loadMore}
              </div>
            </div>
          </ScrollContainer>
        </Column>
      );
    }
  
  }
  