flutter_auth_tut

.\lib\scr\home.dart

//...
class _Home extends State<StatefulWidget> {

  @override
  Widget build(BuildContext context) {    
    return Scaffold(
      appBar: AppBar(
        title: Text('Flutter Authentication Tutorial'),
      ),
      body: Center(
          child: Column(
        mainAxisAlignment: MainAxisAlignment.center,
        crossAxisAlignment: CrossAxisAlignment.stretch,
        children: <Widget>[
          Padding(
            padding: EdgeInsets.symmetric(vertical: 9.0, horizontal: 18.0),
            child: Text('User: $mUserName'),
          ),
          Padding(
            padding: EdgeInsets.symmetric(vertical: 9.0, horizontal: 18.0),
            child: RaisedButton(
                color: Colors.green,
                textColor: Colors.white,
                splashColor: Colors.greenAccent,
                child: const Text('LOGIN'),
                onPressed: isLoggingIn ? null : clickLogin),
          ),
          Padding(
            padding: EdgeInsets.symmetric(vertical: 9.0, horizontal: 18.0),
            child: RaisedButton(
                color: Colors.blue,
                textColor: Colors.white,
                splashColor: Colors.blueAccent,
                child: const Text('LOGOUT'),
                onPressed: isLoggingIn ? null : clickLogout),
          ),
          Padding(
            padding: EdgeInsets.symmetric(vertical: 9.0, horizontal: 18.0),
            child: RaisedButton(
              color: Colors.red,
              textColor: Colors.white,
              splashColor: Colors.redAccent,
              child: const Text('DELETE'),
              onPressed: mUser == null || isLoggingIn ? null : clickDelete,
            ),
          ),
          Opacity(
            opacity: cpbOpacity,
            child: Row(
              mainAxisAlignment: MainAxisAlignment.center,
              children: <Widget>[
                CircularProgressIndicator(),
                SizedBox(width: 20.0),
                Text('Please wait...')
              ],
            ),
          ),
        ],
      )),
    );
  }
}