@atlaskit/panel/dist/es2019/components/Panel/Panel.js

A React component rendering a collapsible panel

import _defineProperty from "@babel/runtime/helpers/defineProperty";
import React, { PureComponent } from 'react';
import PanelStateless from './PanelStateless';
export default class Panel extends PureComponent {
  constructor(...args) {
    super(...args);

    _defineProperty(this, "state", {
      isExpanded: !!this.props.isDefaultExpanded
    });

    _defineProperty(this, "handleChange", () => {
      this.setState(prevState => ({
        isExpanded: !prevState.isExpanded
      }));
    });
  }

  render() {
    const {
      children,
      header
    } = this.props;
    const {
      isExpanded
    } = this.state;
    return /*#__PURE__*/React.createElement(PanelStateless, {
      header: header,
      isExpanded: isExpanded,
      onChange: this.handleChange
    }, children);
  }

}

_defineProperty(Panel, "defaultProps", {
  isDefaultExpanded: false
});