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81 lines
2.3 KiB
81 lines
2.3 KiB
import 'package:flutter/material.dart';
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import 'package:provider/provider.dart';
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import 'package:wakelock_plus/wakelock_plus.dart';
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import '../services/app_settings_service.dart';
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/// Holds a screen wakelock while [AppSettings.keepScreenAwake] is enabled and
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/// the app is foregrounded (#269).
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///
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/// The lock is released when the setting is turned off, when the app leaves the
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/// foreground, and on dispose, so normal display sleep resumes and the
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/// background foreground-service behaviour is untouched.
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class KeepScreenAwake extends StatefulWidget {
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const KeepScreenAwake({super.key, required this.child});
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final Widget child;
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@override
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State<KeepScreenAwake> createState() => _KeepScreenAwakeState();
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}
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class _KeepScreenAwakeState extends State<KeepScreenAwake>
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with WidgetsBindingObserver {
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AppSettingsService? _service;
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bool _foreground = true;
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bool _held = false;
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@override
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void initState() {
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super.initState();
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WidgetsBinding.instance.addObserver(this);
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}
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@override
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void didChangeDependencies() {
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super.didChangeDependencies();
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final service = context.read<AppSettingsService>();
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if (!identical(service, _service)) {
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_service?.removeListener(_sync);
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_service = service..addListener(_sync);
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}
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_sync();
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}
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@override
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void didChangeAppLifecycleState(AppLifecycleState state) {
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_foreground = state == AppLifecycleState.resumed;
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_sync();
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}
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/// Drives the platform wakelock toward the desired state. Failures are
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/// logged and leave the tracked state released, never swallowed.
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Future<void> _sync() async {
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final want = (_service?.settings.keepScreenAwake ?? false) && _foreground;
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if (want == _held) return;
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try {
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await WakelockPlus.toggle(enable: want);
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_held = want;
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} catch (e) {
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_held = false;
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debugPrint('[KeepScreenAwake] failed to set wakelock to $want: $e');
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}
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}
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@override
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void dispose() {
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_service?.removeListener(_sync);
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WidgetsBinding.instance.removeObserver(this);
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if (_held) {
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WakelockPlus.disable().catchError(
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(Object e) =>
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debugPrint('[KeepScreenAwake] failed to release on dispose: $e'),
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);
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}
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super.dispose();
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}
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@override
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Widget build(BuildContext context) => widget.child;
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}
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