fluffychat/lib/widgets/encryption_button.dart

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import 'dart:async';
import 'package:flutter/material.dart';
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import 'package:adaptive_dialog/adaptive_dialog.dart';
import 'package:flutter_gen/gen_l10n/l10n.dart';
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import 'package:future_loading_dialog/future_loading_dialog.dart';
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import 'package:matrix/matrix.dart';
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import 'package:vrouter/vrouter.dart';
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import 'matrix.dart';
class EncryptionButton extends StatefulWidget {
final Room room;
const EncryptionButton(this.room, {Key key}) : super(key: key);
@override
_EncryptionButtonState createState() => _EncryptionButtonState();
}
class _EncryptionButtonState extends State<EncryptionButton> {
StreamSubscription _onSyncSub;
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void _enableEncryptionAction() async {
if (widget.room.encrypted) {
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VRouter.of(context).toSegments(['rooms', widget.room.id, 'encryption']);
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return;
}
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if (widget.room.joinRules == JoinRules.public) {
await showOkAlertDialog(
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useRootNavigator: false,
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context: context,
okLabel: L10n.of(context).ok,
message: L10n.of(context).noEncryptionForPublicRooms,
);
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return;
}
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if (await showOkCancelAlertDialog(
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useRootNavigator: false,
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context: context,
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title: L10n.of(context).enableEncryption,
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message: widget.room.client.encryptionEnabled
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? L10n.of(context).enableEncryptionWarning
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: L10n.of(context).needPantalaimonWarning,
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okLabel: L10n.of(context).yes,
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cancelLabel: L10n.of(context).cancel,
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) ==
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OkCancelResult.ok) {
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await showFutureLoadingDialog(
context: context,
future: () => widget.room.enableEncryption(),
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);
// we want to enable the lock icon
setState(() => null);
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}
}
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@override
void dispose() {
_onSyncSub?.cancel();
super.dispose();
}
@override
Widget build(BuildContext context) {
if (widget.room.encrypted) {
_onSyncSub ??= Matrix.of(context)
.client
.onSync
.stream
.where((s) => s.deviceLists != null)
.listen((s) => setState(() => null));
}
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return FutureBuilder<List<User>>(
future:
widget.room.encrypted ? widget.room.requestParticipants() : null,
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builder: (BuildContext context, snapshot) {
Color color;
if (widget.room.encrypted && snapshot.hasData) {
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final users = snapshot.data;
users.removeWhere((u) =>
!{Membership.invite, Membership.join}.contains(u.membership) ||
!widget.room.client.userDeviceKeys.containsKey(u.id));
var allUsersValid = true;
var oneUserInvalid = false;
for (final u in users) {
final status = widget.room.client.userDeviceKeys[u.id].verified;
if (status != UserVerifiedStatus.verified) {
allUsersValid = false;
}
if (status == UserVerifiedStatus.unknownDevice) {
oneUserInvalid = true;
}
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}
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color = oneUserInvalid
? Colors.red
: (allUsersValid ? Colors.green : Colors.orange);
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} else if (!widget.room.encrypted &&
widget.room.joinRules != JoinRules.public) {
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color = Colors.red;
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}
return IconButton(
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tooltip: widget.room.encrypted
? L10n.of(context).encrypted
: L10n.of(context).encryptionNotEnabled,
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icon: Icon(
widget.room.encrypted
? Icons.lock_outlined
: Icons.lock_open_outlined,
size: 20,
color: color),
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onPressed: _enableEncryptionAction,
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);
});
}
}