@pantheon-systems/design-toolkit-react/dist/Animation/ExpandAnimation.js

Pantheon's React Design Toolkit

import _defineProperty from '@babel/runtime/helpers/defineProperty';
import _slicedToArray from '@babel/runtime/helpers/slicedToArray';
import _objectWithoutProperties from '@babel/runtime/helpers/objectWithoutProperties';
import PropTypes from 'prop-types';
import { useSpringRef, useSpring, useChain, animated } from 'react-spring';
import useMeasure from '../hooks/useMeasure.js';
import { jsx } from 'react/jsx-runtime';

var _excluded = ["children", "isShown", "className"];
function ownKeys(object, enumerableOnly) { var keys = Object.keys(object); if (Object.getOwnPropertySymbols) { var symbols = Object.getOwnPropertySymbols(object); enumerableOnly && (symbols = symbols.filter(function (sym) { return Object.getOwnPropertyDescriptor(object, sym).enumerable; })), keys.push.apply(keys, symbols); } return keys; }
function _objectSpread(target) { for (var i = 1; i < arguments.length; i++) { var source = null != arguments[i] ? arguments[i] : {}; i % 2 ? ownKeys(Object(source), !0).forEach(function (key) { _defineProperty(target, key, source[key]); }) : Object.getOwnPropertyDescriptors ? Object.defineProperties(target, Object.getOwnPropertyDescriptors(source)) : ownKeys(Object(source)).forEach(function (key) { Object.defineProperty(target, key, Object.getOwnPropertyDescriptor(source, key)); }); } return target; }
var ExpandAnimation = function ExpandAnimation(_ref) {
  var children = _ref.children,
    isShown = _ref.isShown,
    className = _ref.className,
    rest = _objectWithoutProperties(_ref, _excluded);
  // We will use this to animate whatever height the alert actually is at any time
  var _useMeasure = useMeasure(),
    _useMeasure2 = _slicedToArray(_useMeasure, 2),
    bind = _useMeasure2[0],
    height = _useMeasure2[1].height;

  /*
    - This is a two stage animation that needs to reverse itself, hence the use of useChain.
      When showing, the height goes, then the opacity. When hiding it's the opposite.
    - Note that you cannot change value types, eg. cannot go from 0 -> "1rem".
      It must be "0rem" -> "1rem". Witholding a value type will assume "px".
  */

  var heightRef = useSpringRef();
  var heightProps = useSpring({
    ref: heightRef,
    from: {
      height: 0
    },
    to: {
      height: isShown ? height : 0
    }
  });
  var opacityRef = useSpringRef();
  var opacityProps = useSpring({
    ref: opacityRef,
    from: {
      opacity: 0
    },
    to: {
      opacity: isShown ? 1 : 0
    }
  });
  useChain(isShown ? [heightRef, opacityRef] : [opacityRef, heightRef], [0, 0.3]);
  return /*#__PURE__*/jsx(animated.div, _objectSpread(_objectSpread({
    className: className,
    style: _objectSpread(_objectSpread({}, heightProps), opacityProps)
  }, rest), {}, {
    children: /*#__PURE__*/jsx("div", _objectSpread(_objectSpread({
      className: "margin-collapse"
    }, bind), {}, {
      children: children
    }))
  }));
};
ExpandAnimation.defaultProps = {
  className: ''
};
ExpandAnimation.propTypes = {
  children: PropTypes.node.isRequired,
  className: PropTypes.string,
  isShown: PropTypes.bool.isRequired
};
var ExpandAnimation$1 = ExpandAnimation;

export { ExpandAnimation$1 as default };
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