Photo_React/photo/src/MiddlePanel.js

import React, { Component } from "react";
import { render } from "react-dom";
import ImageList from './imageList';

class MiddlePanel extends Component {
    constructor() {
        super();
        this.state = {
            name: "React",
            showHideDemo1: false,
            showHideDemo2: false,
            showHideDemo3: false
        };
        this.hideComponent = this.hideComponent.bind(this);
    }

    hideComponent(name) {
        console.log(name);
        switch (name) {
            case "showHideDemo1":
                this.setState({ showHideDemo1: !this.state.showHideDemo1 });
                break;
            case "showHideDemo2":
                this.setState({ showHideDemo2: !this.state.showHideDemo2 });
                break;
            case "showHideDemo3":
                this.setState({ showHideDemo3: !this.state.showHideDemo3 });
                break;
        }
    }

    render() {
        const { showHideDemo1, showHideDemo2, showHideDemo3 } = this.state;
        return (
            <div>
                {showHideDemo1 && <ImageList />}
                {showHideDemo2 && <ImageList />}
                {showHideDemo3 && <ImageList />}
                <div>
                    <button onClick={() => this.hideComponent("showHideDemo1")}>
                        Click to hide Demo1 component
          </button>
                    <button onClick={() => this.hideComponent("showHideDemo2")}>
                        Click to hide Demo2 component
          </button>
                    <button onClick={() => this.hideComponent("showHideDemo3")}>
                        Click to hide Demo3 component
          </button>
                </div>
            </div>
        );
    }
}

export default MiddlePanel;