GitJournal/lib/screens/home_screen.dart

import 'package:flutter/material.dart';

import 'package:journal/state_container.dart';
import 'package:journal/widgets/app_drawer.dart';
import 'package:journal/widgets/journal_list.dart';
import 'package:journal/note_editor.dart';
import 'package:journal/note_viewer.dart';

class HomeScreen extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    final container = StateContainer.of(context);
    final appState = container.appState;

    var createButton = new FloatingActionButton(
      onPressed: () => _newPost(context),
      child: new Icon(Icons.add),
    );

    return new Scaffold(
      appBar: new AppBar(
        title: new Text('Journal'),
      ),
      floatingActionButton: createButton,
      body: new JournalList(
        notes: appState.notes,
        noteSelectedFunction: (noteIndex) {
          var route = new MaterialPageRoute(
            builder: (context) => new NoteBrowsingScreen(
                  notes: appState.notes,
                  noteIndex: noteIndex,
                ),
          );
          Navigator.of(context).push(route);
        },
      ),
      drawer: new AppDrawer(),
    );
  }

  void _newPost(BuildContext context) {
    var route = new MaterialPageRoute(builder: (context) => new NoteEditor());
    Navigator.of(context).push(route);
  }
}