@atlaskit/range/dist/es2019/range.js

A range lets users choose an approximate value on a slider.

import _extends from "@babel/runtime/helpers/extends";
import React, { forwardRef, useCallback, useState } from 'react';
import __noop from '@atlaskit/ds-lib/noop';
import { Input } from './styled';

// Combine omits the keys of the second from the first so in case of overlap the props of the second are used.

// OwnProps is used for external documentation, but does not list every property supported by Range.
// So we combine (a reduced list of) HTMLInputElement attributes with OwnProps to get the full type.

const snapToStep = (value, min, step) => {
  // Normalise the value to allow for division properly with different min values
  const adjustedValue = value - min;
  // Find the number of steps the value covers
  const numSteps = Math.round(adjustedValue / step);
  // Convert numSteps back into original range
  return numSteps * step + min;
};
const getRoundedPercentValue = (value, min, max, step) => {
  let percent = '0';
  if (min < max && value > min) {
    const snappedValue = snapToStep(value, min, step);
    percent = ((snappedValue - min) / (max - min) * 100).toFixed(2);
  }
  return percent;
};
const noop = __noop;

/**
 * __Range__
 *
 * A range lets users choose an approximate value on a slider.
 *
 * - [Examples](https://atlassian.design/components/range/examples)
 * - [Code](https://atlassian.design/components/range/code)
 * - [Usage](https://atlassian.design/components/range/usage)
 */
const Range = /*#__PURE__*/forwardRef(function Range(props, ref) {
  const {
    isDisabled = false,
    defaultValue = 50,
    max = 100,
    min = 0,
    onChange = noop,
    step = 1,
    value: propsValue,
    testId,
    ...rest
  } = props;
  const spreadProps = {
    max,
    min,
    step,
    ref,
    ...rest
  };
  const [value, setValue] = useState(propsValue !== undefined ? propsValue : defaultValue);
  const handleChange = useCallback(e => {
    const newValue = Number(e.target.value);
    setValue(newValue);
    // Note use of newValue to ensure up=to-date value is used
    onChange(newValue);
  }, [onChange]);
  const renderValue = propsValue !== undefined ? propsValue : value;
  const valuePercent = getRoundedPercentValue(renderValue, min, max, step);
  return /*#__PURE__*/React.createElement(Input, _extends({
    type: "range",
    disabled: isDisabled,
    onChange: handleChange,
    value: renderValue,
    valuePercent: valuePercent,
    "data-testid": testId
  }, spreadProps));
});
export default Range;