问窗体对话框不设置状态

EN

class Login extends Component {
  constructor(props) {
    super(props);
    this.state = {
      islogged: false,
      loginSettings: {
        lUsername: "",
        lPassword: ""
      }
    };
  }

  handleInput = (event) => {
    let loginSettingsNew = { ...this.state.loginSettings };
    let val = event.target.value;
    loginSettingsNew[event.target.name] = val;
    this.setState({
      loginSettings: loginSettingsNew
    });
  };

  login = (event) => {
    let lUsername = this.state.loginSettings.lUsername;
    let lPassword = this.state.loginSettings.lPassword;
    if (lUsername === "admin" && lPassword === "password") {
      localStorage.setItem("token", "T");
      this.setState({
        islogged: true
      });
    } else {
      console.log("Erreur");
    }
    event.preventDefault();
  };

  render() {
    if (localStorage.getItem("token")) {
      return <Redirect to="/" />;
    }
    return (
      <div className="Login">
        <Dialog handleInput={this.handleInput} login={this.login} />
        <p>Username: admin - Password: password</p>
      </div>
    );
  }
}

export default function FormDialog() {
  const [open, setOpen] = React.useState(false);
  const handleClickOpen = () => {
    setOpen(true);
  };
  const handleClose = () => {
    setOpen(false);
  };
  return (
    <div>
      <Button variant="outlined" color="primary" onClick={handleClickOpen}>
        Open form dialog
      </Button>
      <Dialog open={open} onClose={handleClose}>
        <DialogTitle>Login</DialogTitle>
        <DialogContent>
          <form onSubmit={this.login}>
            <label>
              <span>Username</span>
              <input name="lUsername" type="text" onChange={this.handleInput} />
            </label>
            <label>
              <span>Password</span>
              <input name="lPassword" type="password" onChange={this.handleInput}/>
            </label>
            <Button onClick={handleClose} color="primary">Cancel</Button>
            <Button type="submit" value="submit" color="primary">Login</Button>
          </form>
        </DialogContent>
      </Dialog>
    </div>
  );
}