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'; import 'matrix.dart'; class ConnectionStatusHeader extends StatefulWidget { @override _ConnectionStatusHeaderState createState() => _ConnectionStatusHeaderState(); } class _ConnectionStatusHeaderState extends State { StreamSubscription _onSyncSub; StreamSubscription _onSyncErrorSub; bool get _connected => DateTime.now().millisecondsSinceEpoch - _lastSyncReceived.millisecondsSinceEpoch < (Matrix.of(context).client.syncTimeoutSec + 2) * 1000; static DateTime _lastSyncReceived = DateTime(0); SyncStatusUpdate _status = SyncStatusUpdate(SyncStatus.waitingForResponse); @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; }, ), ); return AnimatedContainer( duration: Duration(milliseconds: 200), curve: Curves.bounceInOut, height: _connected ? 0 : 36, clipBehavior: Clip.hardEdge, decoration: BoxDecoration(color: Theme.of(context).secondaryHeaderColor), padding: EdgeInsets.symmetric(horizontal: 12), child: Row( mainAxisAlignment: MainAxisAlignment.center, children: [ SizedBox( width: 24, height: 24, child: CircularProgressIndicator( strokeWidth: 2, value: _connected ? 1.0 : _status.progress, ), ), SizedBox(width: 12), Text( _status.toLocalizedString(context), maxLines: 1, overflow: TextOverflow.ellipsis, ), ], ), ); } } 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; } } }