app/javascript/flavours/glitch/components/column.js


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55

import React from 'react';
import PropTypes from 'prop-types';
import detectPassiveEvents from 'detect-passive-events';
import { scrollTop } from 'flavours/glitch/util/scroll';

export default class Column extends React.PureComponent {

  static propTypes = {
    children: PropTypes.node,
    extraClasses: PropTypes.string,
    name: PropTypes.string,
    label: PropTypes.string,
  };

  scrollTop () {
    const scrollable = this.node.querySelector('.scrollable');

    if (!scrollable) {
      return;
    }

    this._interruptScrollAnimation = scrollTop(scrollable);
  }

  handleWheel = () => {
    if (typeof this._interruptScrollAnimation !== 'function') {
      return;
    }

    this._interruptScrollAnimation();
  }

  setRef = c => {
    this.node = c;
  }

  componentDidMount () {
    this.node.addEventListener('wheel', this.handleWheel,  detectPassiveEvents.hasSupport ? { passive: true } : false);
  }

  componentWillUnmount () {
    this.node.removeEventListener('wheel', this.handleWheel);
  }

  render () {
    const { children, extraClasses, name, label } = this.props;

    return (
      <div role='region' aria-label={label} data-column={name} className={`column ${extraClasses || ''}`} ref={this.setRef}>
        {children}
      </div>
    );
  }

}