emoji-mart-lazyload/src/components/preview.js

import React from 'react'
import PropTypes from 'prop-types'

import { Emoji, Skins } from '.'
import { getData } from '../utils'

export default class Preview extends React.PureComponent {
  constructor(props) {
    super(props)
    this.state = { emoji: null }
  }

  render() {
    var { emoji } = this.state,
        { emojiProps, skinsProps, title, emoji: idleEmoji } = this.props

    if (emoji) {
      var emojiData = getData(emoji),
          { emoticons = [] } = emojiData,
          knownEmoticons = [],
          listedEmoticons = []

      emoticons.forEach(emoticon => {
        if (knownEmoticons.indexOf(emoticon.toLowerCase()) >= 0) {
          return
        }

        knownEmoticons.push(emoticon.toLowerCase())
        listedEmoticons.push(emoticon)
      })

      return <div className='emoji-mart-preview'>
        <div className='emoji-mart-preview-emoji'>
          {Emoji({ key: emoji.id, emoji: emoji, ...emojiProps })}
        </div>

        <div className='emoji-mart-preview-data'>
          <div className='emoji-mart-preview-name'>{emoji.name}</div>
          <div className='emoji-mart-preview-shortnames'>
            {emojiData.short_names.map((short_name) =>
              <span key={short_name} className='emoji-mart-preview-shortname'>:{short_name}:</span>
            )}
          </div>
          <div className='emoji-mart-preview-emoticons'>
            {listedEmoticons.map((emoticon) =>
              <span key={emoticon} className='emoji-mart-preview-emoticon'>{emoticon}</span>
            )}
          </div>
        </div>
      </div>
    } else {
      return <div className='emoji-mart-preview'>
        <div className='emoji-mart-preview-emoji'>
          {idleEmoji && idleEmoji.length && Emoji({ emoji: idleEmoji, ...emojiProps })}
        </div>

        <div className='emoji-mart-preview-data'>
          <span className='emoji-mart-title-label'>
            {title}
          </span>
        </div>

        <div className='emoji-mart-preview-skins'>
          <Skins
            {...skinsProps}
          />
        </div>
      </div>
    }
  }
}

Preview.propTypes = {
  title: PropTypes.string.isRequired,
  emoji: PropTypes.string.isRequired,
  emojiProps: PropTypes.object.isRequired,
  skinsProps: PropTypes.object.isRequired,
}