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

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

import SVGs from '../svgs'

export default class Anchors extends React.PureComponent {
  constructor(props) {
    super(props)

    const {categories} = props

    const defaultCategory = categories.filter(category => category.first)[0]

    this.state = {
      selected: defaultCategory.name
    }

    this.handleClick = this.handleClick.bind(this)
  }

  handleClick (e) {
    var index = e.currentTarget.getAttribute('data-index')
    var { categories, onAnchorClick } = this.props

    onAnchorClick(categories[index], index)
  }

  render() {
    var { categories, onAnchorClick, color, i18n } = this.props,
        { selected } = this.state

    return <div className='emoji-mart-anchors'>
      {categories.map((category, i) => {
        var { name, anchor } = category,
            isSelected = name == selected

        if (anchor === false) {
          return null
        }

        return (
          <span
            key={name}
            title={i18n.categories[name.toLowerCase()]}
            data-index={i}
            onClick={this.handleClick}
            className={`emoji-mart-anchor ${isSelected ? 'emoji-mart-anchor-selected' : ''}`}
            style={{ color: isSelected ? color : null }}
          >
            <div dangerouslySetInnerHTML={{ __html: SVGs[name] }}></div>
            <span className='emoji-mart-anchor-bar' style={{ backgroundColor: color }}></span>
          </span>
        )
      })}
    </div>
  }
}

Anchors.propTypes = {
  categories: PropTypes.array,
  onAnchorClick: PropTypes.func,
}

Anchors.defaultProps = {
  categories: [],
  onAnchorClick: (() => {}),
}