choerodon-ui/es/rc-components/trigger/LazyRenderBox.js

An enterprise-class UI design language and React-based implementation

import _objectWithoutProperties from "@babel/runtime/helpers/objectWithoutProperties";
import _classCallCheck from "@babel/runtime/helpers/classCallCheck";
import _createClass from "@babel/runtime/helpers/createClass";
import _inherits from "@babel/runtime/helpers/inherits";
import _possibleConstructorReturn from "@babel/runtime/helpers/possibleConstructorReturn";
import _getPrototypeOf from "@babel/runtime/helpers/getPrototypeOf";
import _defineProperty from "@babel/runtime/helpers/defineProperty";

function _createSuper(Derived) {
  function isNativeReflectConstruct() {
    if (typeof Reflect === "undefined" || !Reflect.construct) return false;
    if (Reflect.construct.sham) return false;
    if (typeof Proxy === "function") return true;

    try {
      Date.prototype.toString.call(Reflect.construct(Date, [], function () {}));
      return true;
    } catch (e) {
      return false;
    }
  }

  return function () {
    var Super = _getPrototypeOf(Derived),
        result;

    if (isNativeReflectConstruct()) {
      var NewTarget = _getPrototypeOf(this).constructor;

      result = Reflect.construct(Super, arguments, NewTarget);
    } else {
      result = Super.apply(this, arguments);
    }

    return _possibleConstructorReturn(this, result);
  };
}

import React, { Children, Component } from 'react';
import PropTypes from 'prop-types';

var LazyRenderBox =
/*#__PURE__*/
function (_Component) {
  _inherits(LazyRenderBox, _Component);

  var _super = _createSuper(LazyRenderBox);

  function LazyRenderBox() {
    _classCallCheck(this, LazyRenderBox);

    return _super.apply(this, arguments);
  }

  _createClass(LazyRenderBox, [{
    key: "shouldComponentUpdate",
    value: function shouldComponentUpdate(nextProps) {
      return nextProps.hiddenClassName || !nextProps.hidden;
    }
  }, {
    key: "render",
    value: function render() {
      var _this$props = this.props,
          hiddenClassName = _this$props.hiddenClassName,
          hidden = _this$props.hidden,
          props = _objectWithoutProperties(_this$props, ["hiddenClassName", "hidden"]);

      if (hiddenClassName || Children.count(props.children) > 1) {
        if (hidden && hiddenClassName) {
          props.className += " ".concat(hiddenClassName);
        }

        return React.createElement("div", props);
      }

      return Children.only(props.children);
    }
  }]);

  return LazyRenderBox;
}(Component);

_defineProperty(LazyRenderBox, "propTypes", {
  children: PropTypes.any,
  className: PropTypes.string,
  hidden: PropTypes.bool,
  hiddenClassName: PropTypes.string
});

export { LazyRenderBox as default };
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