lbry-desktop/ui/js/component/snackBar/view.jsx

import React from 'react';
import Link from 'component/link'

class SnackBar extends React.Component {
  constructor(props) {
    super(props);

    this._displayTime = 5; // in seconds
    this._hideTimeout = null;
  }

  render() {
    const {
      navigate,
      snacks,
      removeSnack,
    } = this.props

    if (!snacks.length) {
      this._hideTimeout = null; //should be unmounting anyway, but be safe?
      return null;
    }

    const snack = snacks[0];
    const {
      message,
      linkText,
      linkTarget,
    } = snack

    if (this._hideTimeout === null) {
      this._hideTimeout = setTimeout(() => {
        this._hideTimeout = null;
        removeSnack()
      }, this._displayTime * 1000);
    }

    return (
      <div className="snack-bar">
        {message}
        {linkText && linkTarget &&
          <Link onClick={() => navigate(linkTarget)} className="snack-bar__action" label={linkText} />
        }
      </div>
    );
  }
}

export default SnackBar;