fluffychat/lib/widgets/connection_status_header.dart

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import 'dart:async';
import 'package:flutter/material.dart';
import 'package:matrix/matrix.dart';
import '../utils/localized_exception_extension.dart';
import 'package:flutter_gen/gen_l10n/l10n.dart';
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import 'matrix.dart';
class ConnectionStatusHeader extends StatefulWidget {
@override
_ConnectionStatusHeaderState createState() => _ConnectionStatusHeaderState();
}
class _ConnectionStatusHeaderState extends State<ConnectionStatusHeader> {
StreamSubscription _onSyncSub;
StreamSubscription _onSyncErrorSub;
bool get _connected =>
DateTime.now().millisecondsSinceEpoch -
_lastSyncReceived.millisecondsSinceEpoch <
(Matrix.of(context).client.sendMessageTimeoutSeconds + 2) * 1000;
static DateTime _lastSyncReceived = DateTime(0);
SyncStatusUpdate _status = SyncStatusUpdate(SyncStatus.waitingForResponse);
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@override
void dispose() {
_onSyncSub?.cancel();
_onSyncErrorSub?.cancel();
super.dispose();
}
@override
Widget build(BuildContext context) {
_onSyncSub ??= Matrix.of(context).client.onSyncStatus.stream.listen(
(status) => setState(
() {
if ((status.status == SyncStatus.processing &&
Matrix.of(context).client.prevBatch != null) ||
status.status == SyncStatus.finished) {
_lastSyncReceived = DateTime.now();
}
_status = status;
},
),
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);
return AnimatedContainer(
duration: Duration(milliseconds: 200),
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curve: Curves.bounceInOut,
height: _connected ? 0 : 36,
clipBehavior: Clip.hardEdge,
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decoration: BoxDecoration(color: Theme.of(context).secondaryHeaderColor),
padding: EdgeInsets.symmetric(horizontal: 12),
child: Row(
mainAxisAlignment: MainAxisAlignment.center,
children: [
SizedBox(
width: 24,
height: 24,
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child: CircularProgressIndicator.adaptive(
strokeWidth: 2,
value: _connected ? 1.0 : _status.progress,
),
),
SizedBox(width: 12),
Text(
_status.toLocalizedString(context),
maxLines: 1,
overflow: TextOverflow.ellipsis,
),
],
),
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);
}
}
extension on SyncStatusUpdate {
String toLocalizedString(BuildContext context) {
switch (status) {
case SyncStatus.waitingForResponse:
return L10n.of(context).loadingPleaseWait;
case SyncStatus.error:
return (error.exception as Object).toLocalizedString(context);
case SyncStatus.processing:
case SyncStatus.cleaningUp:
case SyncStatus.finished:
default:
return L10n.of(context).synchronizingPleaseWait;
}
}
}