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Collapse.js
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Collapse.js
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import React, { Component } from 'react';
import PropTypes from 'prop-types';
import classNames from 'classnames';
import { Transition } from 'react-transition-group';
import {
mapToCssModules,
omit,
pick,
TransitionTimeouts,
TransitionPropTypeKeys,
TransitionStatuses,
tagPropType,
} from './utils';
const propTypes = {
...Transition.propTypes,
/** Make content animation appear horizontally */
horizontal: PropTypes.bool,
/** Set if Collapse is open or closed */
isOpen: PropTypes.bool,
children: PropTypes.oneOfType([
PropTypes.arrayOf(PropTypes.node),
PropTypes.node,
]),
/** Set a custom element for this component */
tag: tagPropType,
/** Add custom class */
className: PropTypes.node,
navbar: PropTypes.bool,
/** Change underlying component's CSS base class name */
cssModule: PropTypes.object,
innerRef: PropTypes.shape({ current: PropTypes.object }),
};
const defaultProps = {
...Transition.defaultProps,
horizontal: false,
isOpen: false,
appear: false,
enter: true,
exit: true,
tag: 'div',
timeout: TransitionTimeouts.Collapse,
};
const transitionStatusToClassHash = {
[TransitionStatuses.ENTERING]: 'collapsing',
[TransitionStatuses.ENTERED]: 'collapse show',
[TransitionStatuses.EXITING]: 'collapsing',
[TransitionStatuses.EXITED]: 'collapse',
};
function getTransitionClass(status) {
return transitionStatusToClassHash[status] || 'collapse';
}
class Collapse extends Component {
constructor(props) {
super(props);
this.state = {
dimension: null,
};
this.nodeRef = props.innerRef || React.createRef();
['onEntering', 'onEntered', 'onExit', 'onExiting', 'onExited'].forEach(
(name) => {
this[name] = this[name].bind(this);
},
);
}
onEntering(_, isAppearing) {
const node = this.getNode();
this.setState({ dimension: this.getDimension(node) });
this.props.onEntering(node, isAppearing);
}
onEntered(_, isAppearing) {
const node = this.getNode();
this.setState({ dimension: null });
this.props.onEntered(node, isAppearing);
}
onExit() {
const node = this.getNode();
this.setState({ dimension: this.getDimension(node) });
this.props.onExit(node);
}
onExiting() {
const node = this.getNode();
// getting this variable triggers a reflow
const _unused = this.getDimension(node); // eslint-disable-line no-unused-vars
this.setState({ dimension: 0 });
this.props.onExiting(node);
}
onExited() {
const node = this.getNode();
this.setState({ dimension: null });
this.props.onExited(node);
}
getNode() {
return this.nodeRef.current;
}
getDimension(node) {
return this.props.horizontal ? node.scrollWidth : node.scrollHeight;
}
render() {
const {
tag: Tag,
horizontal,
isOpen,
className,
navbar,
cssModule,
children,
innerRef,
...otherProps
} = this.props;
const { dimension } = this.state;
const transitionProps = pick(otherProps, TransitionPropTypeKeys);
const childProps = omit(otherProps, TransitionPropTypeKeys);
return (
<Transition
{...transitionProps}
in={isOpen}
nodeRef={this.nodeRef}
onEntering={this.onEntering}
onEntered={this.onEntered}
onExit={this.onExit}
onExiting={this.onExiting}
onExited={this.onExited}
>
{(status) => {
let collapseClass = getTransitionClass(status);
const classes = mapToCssModules(
classNames(
className,
horizontal && 'collapse-horizontal',
collapseClass,
navbar && 'navbar-collapse',
),
cssModule,
);
const style =
dimension === null
? null
: { [horizontal ? 'width' : 'height']: dimension };
return (
<Tag
{...childProps}
style={{ ...childProps.style, ...style }}
className={classes}
ref={this.nodeRef}
>
{children}
</Tag>
);
}}
</Transition>
);
}
}
Collapse.propTypes = propTypes;
Collapse.defaultProps = defaultProps;
export default React.forwardRef((props, ref) => <Collapse innerRef={ref} {...props} />);