import 'dart:async'; import 'package:adaptive_dialog/adaptive_dialog.dart'; import 'package:matrix/matrix.dart'; import 'package:flutter/material.dart'; import 'package:flutter_gen/gen_l10n/l10n.dart'; import 'package:future_loading_dialog/future_loading_dialog.dart'; import 'package:vrouter/vrouter.dart'; 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 { StreamSubscription _onSyncSub; void _enableEncryptionAction() async { if (widget.room.encrypted) { VRouter.of(context).toSegments(['rooms', widget.room.id, 'encryption']); return; } if (widget.room.joinRules == JoinRules.public) { await showOkAlertDialog( useRootNavigator: false, context: context, okLabel: L10n.of(context).ok, message: L10n.of(context).noEncryptionForPublicRooms, ); return; } if (await showOkCancelAlertDialog( useRootNavigator: false, context: context, title: L10n.of(context).enableEncryption, message: widget.room.client.encryptionEnabled ? L10n.of(context).enableEncryptionWarning : L10n.of(context).needPantalaimonWarning, okLabel: L10n.of(context).yes, cancelLabel: L10n.of(context).cancel, ) == OkCancelResult.ok) { await showFutureLoadingDialog( context: context, future: () => widget.room.enableEncryption(), ); // we want to enable the lock icon setState(() => null); } } @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)); } return FutureBuilder>( future: widget.room.encrypted ? widget.room.requestParticipants() : null, builder: (BuildContext context, snapshot) { Color color; if (widget.room.encrypted && snapshot.hasData) { 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; } } color = oneUserInvalid ? Colors.red : (allUsersValid ? Colors.green : Colors.orange); } else if (!widget.room.encrypted && widget.room.joinRules != JoinRules.public) { color = null; } return IconButton( tooltip: widget.room.encrypted ? L10n.of(context).encrypted : L10n.of(context).encryptionNotEnabled, icon: Icon( widget.room.encrypted ? Icons.lock_outlined : Icons.lock_open_outlined, size: 20, color: color), onPressed: _enableEncryptionAction, ); }); } }