import React from "react";
import styles from "./index.less";
import { Select, Icon, Divider } from "antd";

const { Option } = Select;

let index = 0;

class App extends React.Component {
  state = {
    items: ["jack", "lucy"]
  };

  addItem = () => {
    console.log("addItem");
    const { items } = this.state;
    this.setState({
      items: [...items, `New item ${index++}`]
    });
  };

  render() {
    const { items } = this.state;
    return (
      <Select
        style={{ width: 240 }}
        placeholder="custom dropdown render"
        dropdownRender={menu => (
          <div>
            {menu}
            <Divider style={{ margin: "4px 0" }} />
            <div
              style={{ padding: "4px 8px", cursor: "pointer" }}
              onMouseDown={e => e.preventDefault()}
              onClick={this.addItem}
            >
              <Icon type="plus" /> Add item
            </div>
          </div>
        )}
      >
        {items.map(item => (
          <Option key={item}>{item}</Option>
        ))}
      </Select>
    );
  }
}

export default () => (
  <div className={styles.container}>
    <div id="components-select-demo-custom-dropdown-menu">
      <App />
    </div>
  </div>
);