content: import React from 'react';
  import ImmutablePropTypes from 'react-immutable-proptypes';
  import escapeTextContentForBrowser from 'escape-html';
  import PropTypes from 'prop-types';
  import emojify from '../emoji';
  import { isRtl } from '../rtl';
  import { FormattedMessage } from 'react-intl';
  import Permalink from './permalink';
  import classnames from 'classnames';
  
  export default class StatusContent extends React.PureComponent {
  
    static contextTypes = {
      router: PropTypes.object,
    };
  
    static propTypes = {
      status: ImmutablePropTypes.map.isRequired,
      expanded: PropTypes.bool,
      onExpandedToggle: PropTypes.func,
      onClick: PropTypes.func,
    };
  
    state = {
      hidden: true,
    };
  
    _updateStatusLinks () {
      const node  = this.node;
      const links = node.querySelectorAll('a');
  
      for (var i = 0; i < links.length; ++i) {
        let link = links[i];
        if (link.classList.contains('status-link')) {
          continue;
        }
        link.classList.add('status-link');
  
        let mention = this.props.status.get('mentions').find(item => link.href === item.get('url'));
  
        if (mention) {
          link.addEventListener('click', this.onMentionClick.bind(this, mention), false);
          link.setAttribute('title', mention.get('acct'));
        } else if (link.textContent[0] === '#' || (link.previousSibling && link.previousSibling.textContent && link.previousSibling.textContent[link.previousSibling.textContent.length - 1] === '#')) {
          link.addEventListener('click', this.onHashtagClick.bind(this, link.text), false);
        } else {
          link.setAttribute('title', link.href);
        }
  
        link.setAttribute('target', '_blank');
        link.setAttribute('rel', 'noopener');
      }
    }
  
    componentDidMount () {
      this._updateStatusLinks();
    }
  
    componentDidUpdate () {
      this._updateStatusLinks();
    }
  
    onMentionClick = (mention, e) => {
      if (this.context.router && e.button === 0) {
        e.preventDefault();
        this.context.router.history.push(`/accounts/${mention.get('id')}`);
      }
    }
  
    onHashtagClick = (hashtag, e) => {
      hashtag = hashtag.replace(/^#/, '').toLowerCase();
  
      if (this.context.router && e.button === 0) {
        e.preventDefault();
        this.context.router.history.push(`/timelines/tag/${hashtag}`);
      }
    }
  
    handleMouseDown = (e) => {
      this.startXY = [e.clientX, e.clientY];
    }
  
    handleMouseUp = (e) => {
      if (!this.startXY) {
        return;
      }
  
      const [ startX, startY ] = this.startXY;
      const [ deltaX, deltaY ] = [Math.abs(e.clientX - startX), Math.abs(e.clientY - startY)];
  
      if (e.target.localName === 'button' || e.target.localName === 'a' || (e.target.parentNode && (e.target.parentNode.localName === 'button' || e.target.parentNode.localName === 'a'))) {
        return;
      }
  
      if (deltaX + deltaY < 5 && e.button === 0 && this.props.onClick) {
        this.props.onClick();
      }
  
      this.startXY = null;
    }
  
    handleSpoilerClick = (e) => {
      e.preventDefault();
  
      if (this.props.onExpandedToggle) {
        // The parent manages the state
        this.props.onExpandedToggle();
      } else {
        this.setState({ hidden: !this.state.hidden });
      }
    }
  
    setRef = (c) => {
      this.node = c;
    }
  
    render () {
      const { status } = this.props;
  
      const hidden = this.props.onExpandedToggle ? !this.props.expanded : this.state.hidden;
  
      const content = { __html: emojify(status.get('content')) };
      const spoilerContent = { __html: emojify(escapeTextContentForBrowser(status.get('spoiler_text', ''))) };
      const directionStyle = { direction: 'ltr' };
      const classNames = classnames('status__content', {
        'status__content--with-action': this.props.onClick && this.context.router,
      });
  
      if (isRtl(status.get('search_index'))) {
        directionStyle.direction = 'rtl';
      }
  
      if (status.get('spoiler_text').length > 0) {
        let mentionsPlaceholder = '';
  
        const mentionLinks = status.get('mentions').map(item => (
          <Permalink to={`/accounts/${item.get('id')}`} href={item.get('url')} key={item.get('id')} className='mention'>
            @<span>{item.get('username')}</span>
          </Permalink>
        )).reduce((aggregate, item) => [...aggregate, item, ' '], []);
  
        const toggleText = hidden ? <FormattedMessage id='status.show_more' defaultMessage='Show more' /> : <FormattedMessage id='status.show_less' defaultMessage='Show less' />;
  
        if (hidden) {
          mentionsPlaceholder = <div>{mentionLinks}</div>;
        }
  
        return (
          <div className={classNames} ref={this.setRef} tabIndex='0' aria-label={status.get('search_index')} onMouseDown={this.handleMouseDown} onMouseUp={this.handleMouseUp}>
            <p style={{ marginBottom: hidden && status.get('mentions').isEmpty() ? '0px' : null }}>
              <span dangerouslySetInnerHTML={spoilerContent} />
              {' '}
              <button tabIndex='0' className='status__content__spoiler-link' onClick={this.handleSpoilerClick}>{toggleText}</button>
            </p>
  
            {mentionsPlaceholder}
  
            <div tabIndex={!hidden && 0} className={`status__content__text ${!hidden ? 'status__content__text--visible' : ''}`} style={directionStyle} dangerouslySetInnerHTML={content} />
          </div>
        );
      } else if (this.props.onClick) {
        return (
          <div
            ref={this.setRef}
            tabIndex='0'
            aria-label={status.get('search_index')}
            className={classNames}
            style={directionStyle}
            onMouseDown={this.handleMouseDown}
            onMouseUp={this.handleMouseUp}
            dangerouslySetInnerHTML={content}
          />
        );
      } else {
        return (
          <div
            tabIndex='0'
            aria-label={status.get('search_index')}
            ref={this.setRef}
            className='status__content'
            style={directionStyle}
            dangerouslySetInnerHTML={content}
          />
        );
      }
    }
  
  }
  