import "./BrowserPreviewer.less"
import React from "react";
import * as ReactDOM from 'react-dom';
import FileHelper from "../../../common/util/FileHelper";
import {CloseOutlined} from "@ant-design/icons";

interface IProps {
  name: string
  url: string
  size: number
  onClose: () => void
}

interface IState {

}

/**
 * 浏览器预览器
 * 浏览器支持的预览格式统统交由它处理
 */
export default class BrowserPreviewer extends React.Component<IProps, IState> {

  constructor(props: IProps) {
    super(props);
    this.state = {};
  }

  componentDidMount() {

  }

  //展示一系列图片
  static show(name: string, url: string, size: number) {

    let that = this;

    const div: Element = document.createElement('div');
    document.body.appendChild(div);

    let element: React.ReactElement = React.createElement(
      BrowserPreviewer,
      {
        name: name,
        url: url,
        size: size,
        onClose: () => {
          //删除所有节点。
          const unmountResult = ReactDOM.unmountComponentAtNode(div);
          if (unmountResult && div.parentNode) {

            div.parentNode.removeChild(div);

          }
        }
      }
    )

    //将react组件挂载到div中去。
    ReactDOM.render(element, div);

  }

  render() {
    return <div className="browser-previewer">
      <div className="title-bar">

        <div className="left-part">

        </div>

        <div className="middle-part">
          {this.props.name}({FileHelper.humanFileSize(this.props.size)})
        </div>

        <div className="right-part">
        <span className="close btn-action">
          <CloseOutlined onClick={() => {
            this.props.onClose()
          }}/>
        </span>
        </div>


      </div>
      <div className="frame-area">
        <iframe width="100%" height="100%" src={this.props.url}>
          iframe may not supported.
        </iframe>
      </div>
    </div>
  }

}

