import 'package:flutter/material.dart';
import 'package:unmaku/pages/home/RiwayatNilai.dart';
import 'package:unmaku/pages/home/TranskripDetailPage.dart';
import 'package:unmaku/pages/home/TranskripPerSemester.dart';

class TranskripPage extends StatefulWidget {
  @override
  _TranskripPageState createState() => _TranskripPageState();
}

class _TranskripPageState extends State<TranskripPage> {
  List<String> _screens = [
    'Transkrip',
    'TranskripPerSemester',
    'RiwayatNilai'
  ];

  String _currentScreen = "TranskripPage";

  void navTo(String screen) {
    setState(() => _currentScreen = screen);

    switch (screen) {
      case 'Transkrip':
        Navigator.of(context)
            .push(MaterialPageRoute<Null>(builder: (BuildContext context) {
          return new TranskripDetailPage();
        }));
        break;

      case 'TranskripPerSemester':
        Navigator.of(context)
            .push(MaterialPageRoute<Null>(builder: (BuildContext context) {
          return new TranskripPerSemester();
        }));
        break;

      case 'RiwayatNilai':
        Navigator.of(context)
            .push(MaterialPageRoute<Null>(builder: (BuildContext context) {
          return new RiwayatNilai();
        }));
        break;

      default:
        Navigator.of(context)
            .push(MaterialPageRoute<Null>(builder: (BuildContext context) {
          return new TranskripPage();
        }));
        break;
    }
  }

  @override
  Widget build(BuildContext context) {
    final _width = MediaQuery.of(context).size.width;
    final _height = MediaQuery.of(context).size.height;
    return Scaffold(
      body: Center(
        child: DropdownButton<String>(
          hint: Text("Pilih Jenis Transkrip"),
          onChanged: navTo,
          //value: _currentScreen ?? null,
          items: _screens.map((scr) {
            return DropdownMenuItem<String>(
              child: Text(scr),
            );
          }).toList(),
        ),
      ),
    );
  }
}