| /* |
| * Copyright (C) 2020 The Android Open Source Project |
| * |
| * 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. |
| */ |
| |
| package com.android.server.location.injector; |
| |
| import android.content.Context; |
| import android.os.PowerManager; |
| import android.os.PowerManager.LocationPowerSaveMode; |
| import android.os.PowerManagerInternal; |
| import android.os.PowerSaveState; |
| |
| import com.android.internal.util.Preconditions; |
| import com.android.server.FgThread; |
| import com.android.server.LocalServices; |
| |
| import java.util.Objects; |
| import java.util.function.Consumer; |
| |
| /** |
| * Provides accessors and listeners for location power save mode. |
| */ |
| public class SystemLocationPowerSaveModeHelper extends LocationPowerSaveModeHelper implements |
| Consumer<PowerSaveState> { |
| |
| private final Context mContext; |
| private boolean mReady; |
| |
| @LocationPowerSaveMode |
| private volatile int mLocationPowerSaveMode; |
| |
| public SystemLocationPowerSaveModeHelper(Context context) { |
| mContext = context; |
| } |
| |
| /** Called when system is ready. */ |
| public void onSystemReady() { |
| if (mReady) { |
| return; |
| } |
| |
| LocalServices.getService(PowerManagerInternal.class).registerLowPowerModeObserver( |
| PowerManager.ServiceType.LOCATION, this); |
| mLocationPowerSaveMode = Objects.requireNonNull( |
| mContext.getSystemService(PowerManager.class)).getLocationPowerSaveMode(); |
| |
| mReady = true; |
| } |
| |
| @Override |
| public void accept(PowerSaveState powerSaveState) { |
| int locationPowerSaveMode; |
| if (!powerSaveState.batterySaverEnabled) { |
| locationPowerSaveMode = PowerManager.LOCATION_MODE_NO_CHANGE; |
| } else { |
| locationPowerSaveMode = powerSaveState.locationMode; |
| } |
| |
| if (locationPowerSaveMode == mLocationPowerSaveMode) { |
| return; |
| } |
| |
| mLocationPowerSaveMode = locationPowerSaveMode; |
| |
| // invoked on ui thread, move to fg thread so we don't block the ui thread |
| FgThread.getHandler().post(() -> notifyLocationPowerSaveModeChanged(locationPowerSaveMode)); |
| } |
| |
| @LocationPowerSaveMode |
| @Override |
| public int getLocationPowerSaveMode() { |
| Preconditions.checkState(mReady); |
| return mLocationPowerSaveMode; |
| } |
| } |