filestash/client/pages/viewerpage/menubar.js

import React from "react";
import PropTypes from "prop-types";
import ReactCSSTransitionGroup from "react-addons-css-transition-group";

import { Container, NgIf, Icon } from "../../components/";
import "./menubar.scss";


export const MenuBar = (props) => {
    return (
        <div className="component_menubar">
          <Container>
            <ReactCSSTransitionGroup transitionName="menubar" transitionLeave={false} transitionEnter={false} transitionAppear={true} transitionAppearTimeout={550}>
              <div className="titlebar" style={{letterSpacing: "0.3px"}}>{props.title}</div>
              <div className="action-item no-select">
                <span className="specific">
                  {props.children}
                </span>
                { props.download === null ? null : <DownloadButton link={props.download} name={props.title} /> }
              </div>
            </ReactCSSTransitionGroup>
          </Container>
        </div>
    );
};

class DownloadButton extends React.Component {
    constructor(props){
        super(props);
        this.state = {
            loading: false,
            id: null
        };
    }

    onDownloadRequest(){
        this.setState({
            loading: true
        });
        document.cookie = "download=yes; path=/; max-age=120;";
        this.setState({
            id: window.setInterval(() => {
                if(/download=yes/.test(document.cookie) === false){
                    window.clearInterval(this.state.id);
                    this.setState({loading: false});
                }
            }, 100)
        });
    }

    componentWillUnmount(){
        window.clearInterval(this.state.id);
    }

    render(){
        return (
            <span className="download-button">
              <NgIf cond={!this.state.loading} type="inline">
                <a href={this.props.link} download={this.props.name} onClick={this.onDownloadRequest.bind(this)}>
                  <Icon name="download_white" />
                </a>
              </NgIf>
              <NgIf cond={this.state.loading} type="inline">
                <Icon name="loading_white" />
              </NgIf>
            </span>
        );
    }
}
DownloadButton.propTypes = {
    link: PropTypes.string.isRequired,
    name: PropTypes.string.isRequired
};