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import _objectWithoutPropertiesLoose from "@babel/runtime/helpers/esm/objectWithoutPropertiesLoose";
import _extends from "@babel/runtime/helpers/esm/extends";
import _assertThisInitialized from "@babel/runtime/helpers/esm/assertThisInitialized";
import _inheritsLoose from "@babel/runtime/helpers/esm/inheritsLoose";
import PropTypes from 'prop-types';
import React from 'react';
import TransitionGroupContext from './TransitionGroupContext';
import { getChildMapping, getInitialChildMapping, getNextChildMapping } from './utils/ChildMapping';
var values = Object.values || function (obj) {
return Object.keys(obj).map(function (k) {
return obj[k];
});
};
var defaultProps = {
component: 'div',
childFactory: function childFactory(child) {
return child;
}
};
/**
* The `<TransitionGroup>` component manages a set of transition components
* (`<Transition>` and `<CSSTransition>`) in a list. Like with the transition
* components, `<TransitionGroup>` is a state machine for managing the mounting
* and unmounting of components over time.
*
* Consider the example below. As items are removed or added to the TodoList the
* `in` prop is toggled automatically by the `<TransitionGroup>`.
*
* Note that `<TransitionGroup>` does not define any animation behavior!
* Exactly _how_ a list item animates is up to the individual transition
* component. This means you can mix and match animations across different list
* items.
*/
var TransitionGroup = /*#__PURE__*/function (_React$Component) {
_inheritsLoose(TransitionGroup, _React$Component);
function TransitionGroup(props, context) {
var _this;
_this = _React$Component.call(this, props, context) || this;
var handleExited = _this.handleExited.bind(_assertThisInitialized(_this)); // Initial children should all be entering, dependent on appear
_this.state = {
contextValue: {
isMounting: true
},
handleExited: handleExited,
firstRender: true
};
return _this;
}
var _proto = TransitionGroup.prototype;
_proto.componentDidMount = function componentDidMount() {
this.mounted = true;
this.setState({
contextValue: {
isMounting: false
}
});
};
_proto.componentWillUnmount = function componentWillUnmount() {
this.mounted = false;
};
TransitionGroup.getDerivedStateFromProps = function getDerivedStateFromProps(nextProps, _ref) {
var prevChildMapping = _ref.children,
handleExited = _ref.handleExited,
firstRender = _ref.firstRender;
return {
children: firstRender ? getInitialChildMapping(nextProps, handleExited) : getNextChildMapping(nextProps, prevChildMapping, handleExited),
firstRender: false
};
} // node is `undefined` when user provided `nodeRef` prop
;
_proto.handleExited = function handleExited(child, node) {
var currentChildMapping = getChildMapping(this.props.children);
if (child.key in currentChildMapping) return;
if (child.props.onExited) {
child.props.onExited(node);
}
if (this.mounted) {
this.setState(function (state) {
var children = _extends({}, state.children);
delete children[child.key];
return {
children: children
};
});
}
};
_proto.render = function render() {
var _this$props = this.props,
Component = _this$props.component,
childFactory = _this$props.childFactory,
props = _objectWithoutPropertiesLoose(_this$props, ["component", "childFactory"]);
var contextValue = this.state.contextValue;
var children = values(this.state.children).map(childFactory);
delete props.appear;
delete props.enter;
delete props.exit;
if (Component === null) {
return /*#__PURE__*/React.createElement(TransitionGroupContext.Provider, {
value: contextValue
}, children);
}
return /*#__PURE__*/React.createElement(TransitionGroupContext.Provider, {
value: contextValue
}, /*#__PURE__*/React.createElement(Component, props, children));
};
return TransitionGroup;
}(React.Component);
TransitionGroup.propTypes = process.env.NODE_ENV !== "production" ? {
/**
* `<TransitionGroup>` renders a `<div>` by default. You can change this
* behavior by providing a `component` prop.
* If you use React v16+ and would like to avoid a wrapping `<div>` element
* you can pass in `component={null}`. This is useful if the wrapping div
* borks your css styles.
*/
component: PropTypes.any,
/**
* A set of `<Transition>` components, that are toggled `in` and out as they
* leave. the `<TransitionGroup>` will inject specific transition props, so
* remember to spread them through if you are wrapping the `<Transition>` as
* with our `<Fade>` example.
*
* While this component is meant for multiple `Transition` or `CSSTransition`
* children, sometimes you may want to have a single transition child with
* content that you want to be transitioned out and in when you change it
* (e.g. routes, images etc.) In that case you can change the `key` prop of
* the transition child as you change its content, this will cause
* `TransitionGroup` to transition the child out and back in.
*/
children: PropTypes.node,
/**
* A convenience prop that enables or disables appear animations
* for all children. Note that specifying this will override any defaults set
* on individual children Transitions.
*/
appear: PropTypes.bool,
/**
* A convenience prop that enables or disables enter animations
* for all children. Note that specifying this will override any defaults set
* on individual children Transitions.
*/
enter: PropTypes.bool,
/**
* A convenience prop that enables or disables exit animations
* for all children. Note that specifying this will override any defaults set
* on individual children Transitions.
*/
exit: PropTypes.bool,
/**
* You may need to apply reactive updates to a child as it is exiting.
* This is generally done by using `cloneElement` however in the case of an exiting
* child the element has already been removed and not accessible to the consumer.
*
* If you do need to update a child as it leaves you can provide a `childFactory`
* to wrap every child, even the ones that are leaving.
*
* @type Function(child: ReactElement) -> ReactElement
*/
childFactory: PropTypes.func
} : {};
TransitionGroup.defaultProps = defaultProps;
export default TransitionGroup;
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