| /* |
| * Copyright (C) 2018 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.settingslib.fuelgauge; |
| |
| import android.content.ContentResolver; |
| import android.content.Context; |
| import android.content.Intent; |
| import android.os.PowerManager; |
| import android.provider.Settings.Secure; |
| import android.util.Log; |
| |
| /** |
| * Utilities related to battery saver. |
| */ |
| public class BatterySaverUtils { |
| private static final String TAG = "BatterySaverUtils"; |
| |
| private BatterySaverUtils() { |
| } |
| |
| private static final boolean DEBUG = false; |
| |
| // Broadcast action for SystemUI to show the battery saver confirmation dialog. |
| public static final String ACTION_SHOW_START_SAVER_CONFIRMATION = "PNW.startSaverConfirmation"; |
| |
| /** |
| * Enable / disable battery saver by user request. |
| * - If it's the first time and needFirstTimeWarning, show the first time dialog. |
| * - If it's 4th time through 8th time, show the schedule suggestion notification. |
| * |
| * @param enable true to disable battery saver. |
| * |
| * @return true if the request succeeded. |
| */ |
| public static synchronized boolean setPowerSaveMode(Context context, |
| boolean enable, boolean needFirstTimeWarning) { |
| if (DEBUG) { |
| Log.d(TAG, "Battery saver turning " + (enable ? "ON" : "OFF")); |
| } |
| final ContentResolver cr = context.getContentResolver(); |
| |
| if (enable && needFirstTimeWarning && maybeShowBatterySaverConfirmation(context)) { |
| return false; |
| } |
| if (enable && !needFirstTimeWarning) { |
| setBatterySaverConfirmationAcknowledged(context); |
| } |
| |
| if (context.getSystemService(PowerManager.class).setPowerSaveMode(enable)) { |
| if (enable) { |
| Secure.putInt(cr, Secure.LOW_POWER_MANUAL_ACTIVATION_COUNT, |
| Secure.getInt(cr, Secure.LOW_POWER_MANUAL_ACTIVATION_COUNT, 0) + 1); |
| |
| // TODO If enabling, and the count is between 4 and 8 (inclusive), then |
| // show the "battery saver schedule suggestion" notification. |
| } |
| |
| return true; |
| } |
| return false; |
| } |
| |
| private static boolean maybeShowBatterySaverConfirmation(Context context) { |
| if (Secure.getInt(context.getContentResolver(), |
| Secure.LOW_POWER_WARNING_ACKNOWLEDGED, 0) != 0) { |
| return false; // Already shown. |
| } |
| final Intent i = new Intent(ACTION_SHOW_START_SAVER_CONFIRMATION); |
| context.sendBroadcast(i); |
| |
| return true; |
| } |
| |
| private static void setBatterySaverConfirmationAcknowledged(Context context) { |
| Secure.putInt(context.getContentResolver(), Secure.LOW_POWER_WARNING_ACKNOWLEDGED, 1); |
| } |
| } |