content: import React from 'react';
  import PropTypes from 'prop-types';
  import { defineMessages, injectIntl, FormattedMessage } from 'react-intl';
  import Overlay from 'react-overlays/lib/Overlay';
  import Motion from '../../ui/util/optional_motion';
  import spring from 'react-motion/lib/spring';
  import { searchEnabled } from '../../../initial_state';
  
  const messages = defineMessages({
    placeholder: { id: 'search.placeholder', defaultMessage: 'Search' },
  });
  
  class SearchPopout extends React.PureComponent {
  
    static propTypes = {
      style: PropTypes.object,
    };
  
    render () {
      const { style } = this.props;
      const extraInformation = searchEnabled ? <FormattedMessage id='search_popout.tips.full_text' defaultMessage='Simple text returns statuses you have written, favourited, boosted, or have been mentioned in, as well as matching usernames, display names, and hashtags.' /> : <FormattedMessage id='search_popout.tips.text' defaultMessage='Simple text returns matching display names, usernames and hashtags' />;
      return (
        <div style={{ ...style, position: 'absolute', width: 285 }}>
          <Motion defaultStyle={{ opacity: 0, scaleX: 0.85, scaleY: 0.75 }} style={{ opacity: spring(1, { damping: 35, stiffness: 400 }), scaleX: spring(1, { damping: 35, stiffness: 400 }), scaleY: spring(1, { damping: 35, stiffness: 400 }) }}>
            {({ opacity, scaleX, scaleY }) => (
              <div className='search-popout' style={{ opacity: opacity, transform: `scale(${scaleX}, ${scaleY})` }}>
                <h4><FormattedMessage id='search_popout.search_format' defaultMessage='Advanced search format' /></h4>
  
                <ul>
                  <li><em>#example</em> <FormattedMessage id='search_popout.tips.hashtag' defaultMessage='hashtag' /></li>
                  <li><em>@username@domain</em> <FormattedMessage id='search_popout.tips.user' defaultMessage='user' /></li>
                  <li><em>URL</em> <FormattedMessage id='search_popout.tips.user' defaultMessage='user' /></li>
                  <li><em>URL</em> <FormattedMessage id='search_popout.tips.status' defaultMessage='status' /></li>
                </ul>
  
                {extraInformation}
              </div>
            )}
          </Motion>
        </div>
      );
    }
  
  }
  
  export default @injectIntl
  class Search extends React.PureComponent {
  
    static propTypes = {
      value: PropTypes.string.isRequired,
      submitted: PropTypes.bool,
      onChange: PropTypes.func.isRequired,
      onSubmit: PropTypes.func.isRequired,
      onClear: PropTypes.func.isRequired,
      onShow: PropTypes.func.isRequired,
      intl: PropTypes.object.isRequired,
    };
  
    state = {
      expanded: false,
    };
  
    handleChange = (e) => {
      this.props.onChange(e.target.value);
    }
  
    handleClear = (e) => {
      e.preventDefault();
  
      if (this.props.value.length > 0 || this.props.submitted) {
        this.props.onClear();
      }
    }
  
    handleKeyDown = (e) => {
      if (e.key === 'Enter') {
        e.preventDefault();
        this.props.onSubmit();
      } else if (e.key === 'Escape') {
        document.querySelector('.ui').parentElement.focus();
      }
    }
  
    noop () {
  
    }
  
    handleFocus = () => {
      this.setState({ expanded: true });
      this.props.onShow();
    }
  
    handleBlur = () => {
      this.setState({ expanded: false });
    }
  
    render () {
      const { intl, value, submitted } = this.props;
      const { expanded } = this.state;
      const hasValue = value.length > 0 || submitted;
  
      return (
        <div className='search'>
          <label>
            <span style={{ display: 'none' }}>{intl.formatMessage(messages.placeholder)}</span>
            <input
              className='search__input'
              type='text'
              placeholder={intl.formatMessage(messages.placeholder)}
              value={value}
              onChange={this.handleChange}
              onKeyUp={this.handleKeyDown}
              onFocus={this.handleFocus}
              onBlur={this.handleBlur}
            />
          </label>
  
          <div role='button' tabIndex='0' className='search__icon' onClick={this.handleClear}>
            <i className={`fa fa-search ${hasValue ? '' : 'active'}`} />
            <i aria-label={intl.formatMessage(messages.placeholder)} className={`fa fa-times-circle ${hasValue ? 'active' : ''}`} />
          </div>
  
          <Overlay show={expanded && !hasValue} placement='bottom' target={this}>
            <SearchPopout />
          </Overlay>
        </div>
      );
    }
  
  }
  