fem_tutos/node_modules/react-transition-group/esm/SwitchTransition.js

import _inheritsLoose from "@babel/runtime/helpers/esm/inheritsLoose";

var _leaveRenders, _enterRenders;

import React from 'react';
import PropTypes from 'prop-types';
import { ENTERED, ENTERING, EXITING } from './Transition';
import TransitionGroupContext from './TransitionGroupContext';

function areChildrenDifferent(oldChildren, newChildren) {
  if (oldChildren === newChildren) return false;

  if (React.isValidElement(oldChildren) && React.isValidElement(newChildren) && oldChildren.key != null && oldChildren.key === newChildren.key) {
    return false;
  }

  return true;
}
/**
 * Enum of modes for SwitchTransition component
 * @enum { string }
 */


export var modes = {
  out: 'out-in',
  in: 'in-out'
};

var callHook = function callHook(element, name, cb) {
  return function () {
    var _element$props;

    element.props[name] && (_element$props = element.props)[name].apply(_element$props, arguments);
    cb();
  };
};

var leaveRenders = (_leaveRenders = {}, _leaveRenders[modes.out] = function (_ref) {
  var current = _ref.current,
      changeState = _ref.changeState;
  return React.cloneElement(current, {
    in: false,
    onExited: callHook(current, 'onExited', function () {
      changeState(ENTERING, null);
    })
  });
}, _leaveRenders[modes.in] = function (_ref2) {
  var current = _ref2.current,
      changeState = _ref2.changeState,
      children = _ref2.children;
  return [current, React.cloneElement(children, {
    in: true,
    onEntered: callHook(children, 'onEntered', function () {
      changeState(ENTERING);
    })
  })];
}, _leaveRenders);
var enterRenders = (_enterRenders = {}, _enterRenders[modes.out] = function (_ref3) {
  var children = _ref3.children,
      changeState = _ref3.changeState;
  return React.cloneElement(children, {
    in: true,
    onEntered: callHook(children, 'onEntered', function () {
      changeState(ENTERED, React.cloneElement(children, {
        in: true
      }));
    })
  });
}, _enterRenders[modes.in] = function (_ref4) {
  var current = _ref4.current,
      children = _ref4.children,
      changeState = _ref4.changeState;
  return [React.cloneElement(current, {
    in: false,
    onExited: callHook(current, 'onExited', function () {
      changeState(ENTERED, React.cloneElement(children, {
        in: true
      }));
    })
  }), React.cloneElement(children, {
    in: true
  })];
}, _enterRenders);
/**
 * A transition component inspired by the [vue transition modes](https://vuejs.org/v2/guide/transitions.html#Transition-Modes).
 * You can use it when you want to control the render between state transitions.
 * Based on the selected mode and the child's key which is the `Transition` or `CSSTransition` component, the `SwitchTransition` makes a consistent transition between them.
 *
 * If the `out-in` mode is selected, the `SwitchTransition` waits until the old child leaves and then inserts a new child.
 * If the `in-out` mode is selected, the `SwitchTransition` inserts a new child first, waits for the new child to enter and then removes the old child.
 *
 * **Note**: If you want the animation to happen simultaneously
 * (that is, to have the old child removed and a new child inserted **at the same time**),
 * you should use
 * [`TransitionGroup`](https://reactcommunity.org/react-transition-group/transition-group)
 * instead.
 *
 * ```jsx
 * function App() {
 *  const [state, setState] = useState(false);
 *  return (
 *    <SwitchTransition>
 *      <CSSTransition
 *        key={state ? "Goodbye, world!" : "Hello, world!"}
 *        addEndListener={(node, done) => node.addEventListener("transitionend", done, false)}
 *        classNames='fade'
 *      >
 *        <button onClick={() => setState(state => !state)}>
 *          {state ? "Goodbye, world!" : "Hello, world!"}
 *        </button>
 *      </CSSTransition>
 *    </SwitchTransition>
 *  );
 * }
 * ```
 *
 * ```css
 * .fade-enter{
 *    opacity: 0;
 * }
 * .fade-exit{
 *    opacity: 1;
 * }
 * .fade-enter-active{
 *    opacity: 1;
 * }
 * .fade-exit-active{
 *    opacity: 0;
 * }
 * .fade-enter-active,
 * .fade-exit-active{
 *    transition: opacity 500ms;
 * }
 * ```
 */

var SwitchTransition = /*#__PURE__*/function (_React$Component) {
  _inheritsLoose(SwitchTransition, _React$Component);

  function SwitchTransition() {
    var _this;

    for (var _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; _key++) {
      args[_key] = arguments[_key];
    }

    _this = _React$Component.call.apply(_React$Component, [this].concat(args)) || this;
    _this.state = {
      status: ENTERED,
      current: null
    };
    _this.appeared = false;

    _this.changeState = function (status, current) {
      if (current === void 0) {
        current = _this.state.current;
      }

      _this.setState({
        status: status,
        current: current
      });
    };

    return _this;
  }

  var _proto = SwitchTransition.prototype;

  _proto.componentDidMount = function componentDidMount() {
    this.appeared = true;
  };

  SwitchTransition.getDerivedStateFromProps = function getDerivedStateFromProps(props, state) {
    if (props.children == null) {
      return {
        current: null
      };
    }

    if (state.status === ENTERING && props.mode === modes.in) {
      return {
        status: ENTERING
      };
    }

    if (state.current && areChildrenDifferent(state.current, props.children)) {
      return {
        status: EXITING
      };
    }

    return {
      current: React.cloneElement(props.children, {
        in: true
      })
    };
  };

  _proto.render = function render() {
    var _this$props = this.props,
        children = _this$props.children,
        mode = _this$props.mode,
        _this$state = this.state,
        status = _this$state.status,
        current = _this$state.current;
    var data = {
      children: children,
      current: current,
      changeState: this.changeState,
      status: status
    };
    var component;

    switch (status) {
      case ENTERING:
        component = enterRenders[mode](data);
        break;

      case EXITING:
        component = leaveRenders[mode](data);
        break;

      case ENTERED:
        component = current;
    }

    return /*#__PURE__*/React.createElement(TransitionGroupContext.Provider, {
      value: {
        isMounting: !this.appeared
      }
    }, component);
  };

  return SwitchTransition;
}(React.Component);

SwitchTransition.propTypes = process.env.NODE_ENV !== "production" ? {
  /**
   * Transition modes.
   * `out-in`: Current element transitions out first, then when complete, the new element transitions in.
   * `in-out`: New element transitions in first, then when complete, the current element transitions out.
   *
   * @type {'out-in'|'in-out'}
   */
  mode: PropTypes.oneOf([modes.in, modes.out]),

  /**
   * Any `Transition` or `CSSTransition` component.
   */
  children: PropTypes.oneOfType([PropTypes.element.isRequired])
} : {};
SwitchTransition.defaultProps = {
  mode: modes.out
};
export default SwitchTransition;