yubioath-flutter/lib/android/window_state_provider.dart
2022-10-04 12:12:54 +02:00

70 lines
2.0 KiB
Dart

/*
* Copyright (C) 2022 Yubico.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import 'package:flutter/material.dart';
import 'package:flutter_riverpod/flutter_riverpod.dart';
import 'package:logging/logging.dart';
import 'package:yubico_authenticator/app/logging.dart';
import '../app/models.dart';
final _log = Logger('android.window_state_provider');
final _windowStateProvider =
StateNotifierProvider<_WindowStateNotifier, WindowState>(
(ref) => _WindowStateNotifier());
final androidWindowStateProvider = Provider<WindowState>(
(ref) => ref.watch(_windowStateProvider),
);
class _WindowStateNotifier extends StateNotifier<WindowState>
with WidgetsBindingObserver {
_WindowStateNotifier()
: super(WindowState(focused: true, visible: true, active: true)) {
_init();
}
@override
void didChangeAppLifecycleState(AppLifecycleState lifeCycleState) {
_log.debug(
'appLifecycleStateChange triggered with: ${lifeCycleState.name}');
var requestedState = lifeCycleState == AppLifecycleState.resumed;
var currentState = state.focused;
if (requestedState != currentState) {
state = WindowState(
focused: requestedState,
visible: requestedState,
active: requestedState);
_log.debug('Updated windowState to $state');
} else {
_log.debug('Ignoring appLifecycleStateChange');
}
}
void _init() {
WidgetsBinding.instance.addObserver(this);
}
@override
void dispose() {
WidgetsBinding.instance.removeObserver(this);
super.dispose();
}
}