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Elias Projahn 2020-05-21 20:25:25 +02:00
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import 'package:flutter/material.dart';
import 'backend.dart';
import 'date_utils.dart';
import 'memo.dart';
import 'memo_editor.dart';
/// The Memor home screen.
///
/// The screen shows nothing more than a list of scheduled memos. They can be
/// dismissed by swiping and edited by tapping.
class HomeScreen extends StatelessWidget {
Future<Memo> _showMemoEditor(BuildContext context, [Memo memo]) async {
return await Navigator.push(
context,
MaterialPageRoute(
builder: (context) => MemoEditor(
memo: memo,
),
fullscreenDialog: true,
),
);
}
@override
Widget build(BuildContext context) {
final backend = MemorBackend.of(context);
return Scaffold(
appBar: AppBar(
title: Text('Memor'),
),
body: backend.loading
? Center(
child: CircularProgressIndicator(),
)
: StreamBuilder<List<Memo>>(
stream: backend.memos,
builder: (context, snapshot) {
if (snapshot.hasData) {
final memos = snapshot.data;
if (memos.isNotEmpty) {
return ListView.builder(
itemCount: memos.length,
itemBuilder: (context, index) {
final memo = memos[index];
final scheduled = memo.scheduled;
final dateString = scheduled.dateString;
final timeOfDayString =
scheduled.timeOfDay.format(context);
return Dismissible(
key: ValueKey(memo.id),
secondaryBackground: Container(
padding: const EdgeInsets.all(8.0),
alignment: Alignment.centerRight,
color: Colors.amber,
child: const Icon(Icons.done),
),
background: Container(
padding: const EdgeInsets.all(8.0),
alignment: Alignment.centerLeft,
color: Colors.amber,
child: const Icon(Icons.done),
),
child: ListTile(
title: Text(memo.text),
subtitle: Text('$dateString at $timeOfDayString'),
onTap: () async {
final result =
await _showMemoEditor(context, memo);
if (result != null) {
await backend.updateMemo(index, result);
}
},
),
onDismissed: (_) async {
await backend.deleteMemo(index);
Scaffold.of(context).showSnackBar(
SnackBar(
content: Text('Deleted "${memo.text}"'),
action: SnackBarAction(
label: 'UNDO',
onPressed: () async {
await backend.addMemo(memo);
},
),
),
);
},
);
},
);
} else {
return Center(
child: Text(
'No reminders scheduled',
style: Theme.of(context).textTheme.headline6.copyWith(
color: Colors.grey,
),
),
);
}
} else {
return Container();
}
},
),
floatingActionButton: FloatingActionButton(
child: const Icon(Icons.add),
onPressed: () async {
final result = await _showMemoEditor(context);
if (result != null) {
await backend.addMemo(result);
}
},
),
);
}
}