React >> tooltip example with typescript (material-ui)

npm install @material-ui/core --save

  
tooltipExample.tsx
**   enterDelay={100}  >> tooltip is displayed in 100ms
**   leaveDelay={200} >> tooltip hides in 200ms
**  "On mobile, the tooltip is displayed when the user longpresses the element. You can disable this feature with the disableTouchListener property." ( references: https://material-ui.com/components/tooltips/ )

import React from 'react';
import Button from '@material-ui/core/Button';
import Tooltip from '@material-ui/core/Tooltip';
import './tooltipExample.scss';
import ArrowTooltip from '../../commons/arrowTooltip/arowTooltip';

const listItems = ["tooltip 1", "tooltip 2", "tooltip 3", "tooltip 4"];

class TooltipExample extends React.PureComponent {
  render() {
    return (
      <>
        <div className="custom-margin">
          <strong>Tooltip at the left on the icon</strong>
          <Tooltip
            title={listItems.map((item:string, idx: number) => <li key={idx}>{item}</li>)}
            placement="right"
            enterDelay={100}
            leaveDelay={200}
          >
            <span className="info" />
          </Tooltip>
        </div>

        <div className="custom-margin">
          <strong>ArrowTooltip at the left on the icon</strong>
          <ArrowTooltip
            title={listItems.map((item:string, idx: number) => <li key={idx}>{item}</li>)}
            placement="right"
            enterDelay={100}
            leaveDelay={200}
          >
            <span className="info" />
          </ArrowTooltip>
        </div>

        <div className="custom-margin">
          <Tooltip
            title="Tooltip at the bottom on the button"
            placement="bottom-start"
            enterDelay={100}
            leaveDelay={200}
          >
            <Button>Button example</Button>
          </Tooltip>
        </div>

      </>
    );
  }
}

export default TooltipExample;

tooltipExample.scss
(you should also add a file named as info.svg in the project)

.info {
  display: inline-block;
  background: url(./info.svg) no-repeat;
  background-size: 13px 18px;
  width: 15px;
  height: 20px;
  margin-left: 3px;
}

.custom-margin {
  margin-bottom: 25px;
}

arrowTooltip.tsx ( references: https://material-ui.com/components/tooltips/ )

import React from 'react';
import { Theme, makeStyles, createStyles } from '@material-ui/core/styles';
import Tooltip, { TooltipProps } from '@material-ui/core/Tooltip';
import PropTypes from 'prop-types';

function arrowGenerator(color: string) {
  return {
    '&[x-placement*="bottom"] $arrow': {
      top: 0,
      left: 0,
      marginTop: '-0.95em',
      width: '3em',
      height: '1em',
      '&::before': {
        borderWidth: '0 1em 1em 1em',
        borderColor: `transparent transparent ${color} transparent`,
      },
    },
    '&[x-placement*="top"] $arrow': {
      bottom: 0,
      left: 0,
      marginBottom: '-0.95em',
      width: '3em',
      height: '1em',
      '&::before': {
        borderWidth: '1em 1em 0 1em',
        borderColor: `${color} transparent transparent transparent`,
      },
    },
    '&[x-placement*="right"] $arrow': {
      left: 0,
      marginLeft: '-0.95em',
      height: '3em',
      width: '1em',
      '&::before': {
        borderWidth: '1em 1em 1em 0',
        borderColor: `transparent ${color} transparent transparent`,
      },
    },
    '&[x-placement*="left"] $arrow': {
      right: 0,
      marginRight: '-0.95em',
      height: '3em',
      width: '1em',
      '&::before': {
        borderWidth: '1em 0 1em 1em',
        borderColor: `transparent transparent transparent ${color}`,
      },
    },
  };
}

const useStylesArrow = makeStyles((theme: Theme) =>
  createStyles({
    tooltip: {
      position: 'relative',
    },
    arrow: {
      position: 'absolute',
      fontSize: 6,
      width: '3em',
      height: '3em',
      '&::before': {
        content: '""',
        margin: 'auto',
        display: 'block',
        width: 0,
        height: 0,
        borderStyle: 'solid',
      },
    },
    popper: arrowGenerator(theme.palette.grey[700]),
  }),
);

export default function ArrowTooltip(props: TooltipProps) {
  const { arrow, ...classes } = useStylesArrow();
  const [arrowRef, setArrowRef] = React.useState<HTMLSpanElement | null>(null);

  return (
    <Tooltip
      classes={classes}
      PopperProps={{
        popperOptions: {
          modifiers: {
            arrow: {
              enabled: Boolean(arrowRef),
              element: arrowRef,
            },
          },
        },
      }}
      {...props}
      title={
        <React.Fragment>
          {props.title}
          <span className={arrow} ref={setArrowRef} />
        </React.Fragment>
      }
    />
  );
}

ArrowTooltip.propTypes = {
  title: PropTypes.node,
};

screenshots: