@wordpress/components/build-module/dropdown/index.native.js

UI components for WordPress.

import { createElement, Fragment } from "@wordpress/element";

/**
 * WordPress dependencies
 */
import { Component } from '@wordpress/element';

class Dropdown extends Component {
  constructor() {
    super(...arguments);
    this.toggle = this.toggle.bind(this);
    this.close = this.close.bind(this);
    this.state = {
      isOpen: false
    };
  }

  componentWillUnmount() {
    const {
      isOpen
    } = this.state;
    const {
      onToggle
    } = this.props;

    if (isOpen && onToggle) {
      onToggle(false);
    }
  }

  componentDidUpdate(prevProps, prevState) {
    const {
      isOpen
    } = this.state;
    const {
      onToggle
    } = this.props;

    if (prevState.isOpen !== isOpen && onToggle) {
      onToggle(isOpen);
    }
  }

  toggle() {
    this.setState(state => ({
      isOpen: !state.isOpen
    }));
  }

  close() {
    this.setState({
      isOpen: false
    });
  }

  render() {
    const {
      isOpen
    } = this.state;
    const {
      renderContent,
      renderToggle
    } = this.props;
    const args = {
      isOpen,
      onToggle: this.toggle,
      onClose: this.close
    };
    return createElement(Fragment, null, renderToggle(args), isOpen && renderContent(args));
  }

}

export default Dropdown;
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