botframework-webchat-component/lib/Utils/Fade.js

React component of botframework-webchat

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.default = void 0;

var _react = require("react");

var _propTypes = _interopRequireDefault(require("prop-types"));

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

function _slicedToArray(arr, i) { return _arrayWithHoles(arr) || _iterableToArrayLimit(arr, i) || _unsupportedIterableToArray(arr, i) || _nonIterableRest(); }

function _nonIterableRest() { throw new TypeError("Invalid attempt to destructure non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method."); }

function _unsupportedIterableToArray(o, minLen) { if (!o) return; if (typeof o === "string") return _arrayLikeToArray(o, minLen); var n = Object.prototype.toString.call(o).slice(8, -1); if (n === "Object" && o.constructor) n = o.constructor.name; if (n === "Map" || n === "Set") return Array.from(o); if (n === "Arguments" || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(n)) return _arrayLikeToArray(o, minLen); }

function _arrayLikeToArray(arr, len) { if (len == null || len > arr.length) len = arr.length; for (var i = 0, arr2 = new Array(len); i < len; i++) { arr2[i] = arr[i]; } return arr2; }

function _iterableToArrayLimit(arr, i) { if (typeof Symbol === "undefined" || !(Symbol.iterator in Object(arr))) return; var _arr = []; var _n = true; var _d = false; var _e = undefined; try { for (var _i = arr[Symbol.iterator](), _s; !(_n = (_s = _i.next()).done); _n = true) { _arr.push(_s.value); if (i && _arr.length === i) break; } } catch (err) { _d = true; _e = err; } finally { try { if (!_n && _i["return"] != null) _i["return"](); } finally { if (_d) throw _e; } } return _arr; }

function _arrayWithHoles(arr) { if (Array.isArray(arr)) return arr; }

// Initially, <Fade> will render all of its children.
// After a period of time (specified through the "fadeAfter" prop), <Fade> will stop rendering its children and removing it from DOM.
var Fade = function Fade(_ref) {
  var children = _ref.children,
      fadeAfter = _ref.fadeAfter;

  var _useState = (0, _react.useState)(false),
      _useState2 = _slicedToArray(_useState, 2),
      faded = _useState2[0],
      setFaded = _useState2[1];

  (0, _react.useLayoutEffect)(function () {
    setFaded(false);
    var timeout = setTimeout(function () {
      return setFaded(true);
    }, fadeAfter);
    return function () {
      return clearTimeout(timeout);
    };
  }, [fadeAfter]);
  return !faded && (typeof children === 'function' ? children() : children);
};

Fade.defaultProps = {
  children: undefined,
  fadeAfter: 1000
};
Fade.propTypes = {
  children: _propTypes.default.oneOfType([_propTypes.default.element, _propTypes.default.func]),
  fadeAfter: _propTypes.default.number
};
var _default = Fade;
exports.default = _default;
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