carbon/components/BackgroundSelect.js

import React from 'react'
import colornames from 'colornames'

import ImagePicker from './ImagePicker'
import ColorPicker from './ColorPicker'
import Button from './Button'
import Popout, { managePopout } from './Popout'
import { COLORS, DEFAULT_BG_COLOR } from '../lib/constants'
import { capitalize, stringifyRGBA } from '../lib/util'

function validateColor(str) {
  if (/#\d{3,6}|rgba{0,1}\(.*?\)/gi.test(str) || colornames(str)) {
    return str
  }
}

class BackgroundSelect extends React.PureComponent {
  selectTab = name => {
    if (this.props.mode !== name) {
      this.props.onChange({ backgroundMode: name })
    }
  }

  handlePickColor = ({ rgb }) => this.props.onChange({ backgroundColor: stringifyRGBA(rgb) })

  render() {
    const { color, mode, image, onChange, isVisible, toggleVisibility, carbonRef } = this.props

    const background = validateColor(color) ? color : DEFAULT_BG_COLOR

    const aspectRatio = carbonRef ? carbonRef.clientWidth / carbonRef.clientHeight : 1

    return (
      <div className="bg-select-container">
        <Button
          border
          center
          selected={isVisible}
          className={`bg-select-display ${isVisible ? 'is-visible' : ''}`}
          onClick={toggleVisibility}
          background="white"
          hoverBackground="white"
        >
          <div className="bg-color-alpha" />
          <div className="bg-color" />
        </Button>

        <Popout
          id="bg-select-pickers"
          pointerLeft="15px"
          hidden={!isVisible}
          style={{ width: '222px' }}
        >
          <div className="picker-tabs">
            {['color', 'image'].map(tab => (
              <div
                role="button"
                tabIndex={0}
                key={tab}
                className={`picker-tab ${mode === tab ? 'active' : ''}`}
                onClick={this.selectTab.bind(null, tab)}
              >
                {capitalize(tab)}
              </div>
            ))}
          </div>
          <div className="picker-tabs-contents">
            <div hidden={mode !== 'color'}>
              <ColorPicker color={color} onChange={this.handlePickColor} />
            </div>
            <div hidden={mode !== 'image'}>
              <ImagePicker onChange={onChange} imageDataURL={image} aspectRatio={aspectRatio} />
            </div>
          </div>
        </Popout>
        <style jsx>
          {`
            .bg-select-container {
              height: 100%;
            }

            .bg-select-container :global(.bg-select-display) {
              position: relative;
              overflow: hidden;
              height: 100%;
              width: 40px;
              border: 1px solid ${COLORS.SECONDARY};
            }

            .bg-select-container :global(.bg-select-display.is-visible),
            .bg-select-container :global(.bg-select-display:focus) {
              border-width: 2px;
            }

            .bg-color {
              position: absolute;
              top: 0px;
              right: 0px;
              bottom: 0px;
              left: 0px;
              ${mode === 'image'
                ? `background: url(${image});
                 background-size: cover;
                 background-repeat: no-repeat;`
                : `background: ${background};`};
            }

            .bg-color-alpha {
              position: absolute;
              top: 0px;
              right: 0px;
              bottom: 0px;
              left: 0px;
              background: url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAQCAYAAAAf8/9hAAAAMUlEQVQ4T2NkYGAQYcAP3uCTZhw1gGGYhAGBZIA/nYDCgBDAm9BGDWAAJyRCgLaBCAAgXwixzAS0pgAAAABJRU5ErkJggg==);
            }

            .picker-tabs {
              display: flex;
              border-bottom: 2px solid ${COLORS.SECONDARY};
            }

            .picker-tab {
              user-select: none;
              cursor: pointer;
              background: ${COLORS.DARK_GRAY};
              width: 50%;
              text-align: center;
              padding: 8px 0;
              border-right: 1px solid ${COLORS.SECONDARY};
            }

            .picker-tab:last-child {
              border-right: none;
            }

            .picker-tab.active {
              background: none;
            }
          `}
        </style>
      </div>
    )
  }
}

export default managePopout(BackgroundSelect)