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Add battery_plus_linux
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‎packages/battery_plus/lib/battery_plus.dart‎

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// found in the LICENSE file.
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import 'dart:async';
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import 'dart:io' show Platform;
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import 'package:flutter/foundation.dart' show kIsWeb;
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import 'package:battery_plus_platform_interface/battery_plus_platform_interface.dart';
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import 'package:battery_plus_platform_interface/src/method_channel_battery_plus.dart';
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import 'package:battery_plus_linux/battery_plus_linux.dart';
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// Export enums from the platform_interface so plugin users can use them directly.
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export 'package:battery_plus_platform_interface/battery_plus_platform_interface.dart'
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static Battery _singleton;
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static BatteryPlatform get _platform => BatteryPlatform.instance;
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static bool _manualDartRegistrationNeeded = true;
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static BatteryPlatform get _platform {
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// This is to manually endorse Dart implementations until automatic
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// registration of Dart plugins is implemented. For details see
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// https://github.com/flutter/flutter/issues/52267.
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if (_manualDartRegistrationNeeded) {
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// Only do the initial registration if it hasn't already been overridden
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// with a non-default instance.
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if (!kIsWeb && BatteryPlatform.instance is MethodChannelBattery) {
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if (Platform.isLinux) {
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BatteryPlatform.instance = BatteryLinux();
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}
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}
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_manualDartRegistrationNeeded = false;
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}
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return BatteryPlatform.instance;
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}
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/// get battery level
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Future<int> get batteryLevel {

‎packages/battery_plus/pubspec.yaml‎

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pluginClass: BatteryPlugin
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ios:
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pluginClass: FLTBatteryPlugin
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linux:
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default_package: battery_plus_linux
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macos:
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default_package: battery_plus_macos
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web:
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sdk: flutter
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meta: ^1.0.5
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battery_plus_platform_interface: ^0.1.0
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battery_plus_linux: ^0.1.0
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battery_plus_macos: ^0.1.0
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battery_plus_web: ^0.1.0
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battery_plus_windows: ^0.1.0

‎packages/battery_plus_linux/.gitignore‎

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# Miscellaneous
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*.class
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*.log
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*.pyc
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*.swp
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.DS_Store
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.atom/
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.buildlog/
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.history
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.svn/
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# IntelliJ related
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*.iml
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*.ipr
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*.iws
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.idea/
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# The .vscode folder contains launch configuration and tasks you configure in
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# VS Code which you may wish to be included in version control, so this line
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# is commented out by default.
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#.vscode/
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# Flutter/Dart/Pub related
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**/doc/api/
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.dart_tool/
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.flutter-plugins
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.flutter-plugins-dependencies
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.packages
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.pub-cache/
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.pub/
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build/
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# Android related
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**/android/**/gradle-wrapper.jar
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**/android/.gradle
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**/android/captures/
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**/android/gradlew
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**/android/gradlew.bat
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**/android/local.properties
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**/android/**/GeneratedPluginRegistrant.java
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# iOS/XCode related
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**/ios/**/*.mode1v3
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**/ios/**/*.mode2v3
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**/ios/**/*.moved-aside
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**/ios/**/*.pbxuser
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**/ios/**/*.perspectivev3
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**/ios/**/*sync/
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**/ios/**/.sconsign.dblite
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**/ios/**/.tags*
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**/ios/**/.vagrant/
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**/ios/**/DerivedData/
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**/ios/**/Icon?
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**/ios/**/Pods/
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**/ios/**/.symlinks/
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**/ios/**/profile
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**/ios/**/xcuserdata
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**/ios/.generated/
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**/ios/Flutter/App.framework
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**/ios/Flutter/Flutter.framework
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**/ios/Flutter/Flutter.podspec
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**/ios/Flutter/Generated.xcconfig
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**/ios/Flutter/app.flx
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**/ios/Flutter/app.zip
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**/ios/Flutter/flutter_assets/
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**/ios/Flutter/flutter_export_environment.sh
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**/ios/ServiceDefinitions.json
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**/ios/Runner/GeneratedPluginRegistrant.*
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# Exceptions to above rules.
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!**/ios/**/default.mode1v3
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!**/ios/**/default.mode2v3
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!**/ios/**/default.pbxuser
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!**/ios/**/default.perspectivev3

‎packages/battery_plus_linux/.metadata‎

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# This file tracks properties of this Flutter project.
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# Used by Flutter tool to assess capabilities and perform upgrades etc.
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#
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# This file should be version controlled and should not be manually edited.
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version:
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revision: 34541c30735bc1086335e13d69a7e0acdc0538c5
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channel: master
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project_type: package

‎packages/battery_plus_linux/CHANGELOG.md‎

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## 0.1.0
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- Initial Linux support.

‎packages/battery_plus_linux/LICENSE‎

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// Copyright 2020 The Chromium Authors. All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following disclaimer
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// in the documentation and/or other materials provided with the
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// distribution.
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// * Neither the name of Google Inc. nor the names of its
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// contributors may be used to endorse or promote products derived from
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// this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

‎packages/battery_plus_linux/README.md‎

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# Battery Plus Linux
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[![Flutter Community: battery_plus_linux](https://fluttercommunity.dev/_github/header/battery_plus_linux)](https://github.com/fluttercommunity/community)
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[![pub package](https://img.shields.io/pub/v/battery_plus_linux.svg)](https://pub.dev/packages/battery_plus_linux)
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The Linux implementation of [`battery_plus`](https://pub.dev/packages/battery_plus).
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## Usage
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This package is already included as part of the `battery_plus` package dependency, and will
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be included when using `battery_plus` as normal.

‎packages/battery_plus_linux/analysis_options.yaml‎

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include: package:pedantic/analysis_options.1.9.0.yaml

‎packages/battery_plus_linux/lib/battery_plus_linux.dart‎

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/// The Linux implementation of `battery_plus`.
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library battery_plus_linux;
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export 'src/battery_linux.dart';

‎packages/battery_plus_linux/lib/src/battery_linux.dart‎

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import 'dart:async';
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import 'package:battery_plus_platform_interface/battery_plus_platform_interface.dart';
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import 'package:meta/meta.dart';
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import 'upower_device.dart';
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// ### TODO: introduce an 'unknown' battery state for workstations?
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// https://github.com/fluttercommunity/plus_plugins/issues/61
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extension _ToBatteryState on UPowerBatteryState {
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BatteryState toBatteryState() {
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switch (this) {
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case UPowerBatteryState.charging:
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return BatteryState.charging;
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case UPowerBatteryState.discharging:
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return BatteryState.discharging;
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default:
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return BatteryState.full;
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}
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}
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}
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@visibleForTesting
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typedef UPowerDeviceFactory = UPowerDevice Function();
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/// The Linux implementation of BatteryPlatform.
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class BatteryLinux extends BatteryPlatform {
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/// Returns the current battery level in percent.
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@override
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Future<int> get batteryLevel {
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final device = createDevice();
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return device
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.getPercentage()
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.then((value) => value.round())
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.whenComplete(() => device.dispose());
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}
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/// Fires whenever the battery state changes.
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@override
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Stream<BatteryState> get onBatteryStateChanged {
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_stateController ??= StreamController<BatteryState>(
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onListen: _startListenState,
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onCancel: _stopListenState,
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);
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return _stateController.stream.asBroadcastStream();
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}
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UPowerDevice _stateDevice;
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StreamController<BatteryState> _stateController;
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@visibleForTesting
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UPowerDeviceFactory createDevice = () => UPowerDevice.display();
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void _addState(UPowerBatteryState value) {
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_stateController.add(value.toBatteryState());
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}
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void _startListenState() {
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_stateDevice ??= createDevice();
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_stateDevice.getState().then((value) => _addState(value));
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_stateDevice.subscribeStateChanged().listen((value) => _addState(value));
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}
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void _stopListenState() {
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_stateDevice?.dispose();
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_stateDevice = null;
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}
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}

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