text: // Copyright (c) 2017 Uber Technologies, Inc.
  //
  // Permission is hereby granted, free of charge, to any person obtaining a copy
  // of this software and associated documentation files (the "Software"), to deal
  // in the Software without restriction, including without limitation the rights
  // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  // copies of the Software, and to permit persons to whom the Software is
  // furnished to do so, subject to the following conditions:
  //
  // The above copyright notice and this permission notice shall be included in
  // all copies or substantial portions of the Software.
  //
  // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  // THE SOFTWARE.
  
  import PropTypes from 'prop-types';
  import React from 'react';
  import { onlyUpdateForKeys, compose, withState, withProps } from 'recompose';
  
  import './SpanBar.css';
  
  function toPercent(value) {
    return `${value * 100}%`;
  }
  
  function SpanBar(props) {
    const { viewEnd, viewStart, color, label, hintSide, onClick, onMouseOver, onMouseOut, rpc } = props;
  
    return (
      <div className="span-bar-wrapper" onClick={onClick} onMouseOut={onMouseOut} onMouseOver={onMouseOver}>
        <div
          aria-label={label}
          className={`span-bar hint--always hint--${hintSide}`}
          style={{
            background: color,
            left: toPercent(viewStart),
            width: toPercent(viewEnd - viewStart),
          }}
        />
        {rpc &&
          <div
            className="span-bar-rpc"
            style={{
              background: rpc.color,
              left: toPercent(rpc.viewStart),
              width: toPercent(rpc.viewEnd - rpc.viewStart),
            }}
          />}
      </div>
    );
  }
  
  SpanBar.propTypes = {
    rpc: PropTypes.shape({
      viewStart: PropTypes.number,
      viewEnd: PropTypes.number,
      color: PropTypes.string,
    }),
    viewStart: PropTypes.number.isRequired,
    viewEnd: PropTypes.number.isRequired,
    color: PropTypes.string.isRequired,
    hintSide: PropTypes.string.isRequired,
    label: PropTypes.string.isRequired,
    onClick: PropTypes.func,
    onMouseOver: PropTypes.func,
    onMouseOut: PropTypes.func,
  };
  
  SpanBar.defaultProps = {
    rpc: null,
    onClick: null,
    onMouseOver: null,
    onMouseOut: null,
  };
  
  export default compose(
    withState('label', 'setLabel', props => props.shortLabel),
    withProps(({ setLabel, shortLabel, longLabel }) => ({
      onMouseOver: () => setLabel(longLabel),
      onMouseOut: () => setLabel(shortLabel),
    })),
    onlyUpdateForKeys(['viewStart', 'viewEnd', 'label', 'rpc'])
  )(SpanBar);
  