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      1 /*
      2  * Copyright (C) 2015 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 package com.android.settings.fuelgauge;
     17 
     18 import android.os.IDeviceIdleController;
     19 import android.os.RemoteException;
     20 import android.os.ServiceManager;
     21 import android.util.ArraySet;
     22 import android.util.Log;
     23 
     24 
     25 /**
     26  * Handles getting/changing the whitelist for the exceptions to battery saving features.
     27  */
     28 public class PowerWhitelistBackend {
     29 
     30     private static final String TAG = "PowerWhitelistBackend";
     31 
     32     private static final String DEVICE_IDLE_SERVICE = "deviceidle";
     33 
     34     private static final PowerWhitelistBackend INSTANCE = new PowerWhitelistBackend();
     35 
     36     private final IDeviceIdleController mDeviceIdleService;
     37     private final ArraySet<String> mWhitelistedApps = new ArraySet<>();
     38     private final ArraySet<String> mSysWhitelistedApps = new ArraySet<>();
     39 
     40     public PowerWhitelistBackend() {
     41         mDeviceIdleService = IDeviceIdleController.Stub.asInterface(
     42                 ServiceManager.getService(DEVICE_IDLE_SERVICE));
     43         refreshList();
     44     }
     45 
     46     public int getWhitelistSize() {
     47         return mWhitelistedApps.size();
     48     }
     49 
     50     public boolean isSysWhitelisted(String pkg) {
     51         return mSysWhitelistedApps.contains(pkg);
     52     }
     53 
     54     public boolean isWhitelisted(String pkg) {
     55         return mWhitelistedApps.contains(pkg);
     56     }
     57 
     58     public void addApp(String pkg) {
     59         try {
     60             mDeviceIdleService.addPowerSaveWhitelistApp(pkg);
     61             mWhitelistedApps.add(pkg);
     62         } catch (RemoteException e) {
     63             Log.w(TAG, "Unable to reach IDeviceIdleController", e);
     64         }
     65     }
     66 
     67     public void removeApp(String pkg) {
     68         try {
     69             mDeviceIdleService.removePowerSaveWhitelistApp(pkg);
     70             mWhitelistedApps.remove(pkg);
     71         } catch (RemoteException e) {
     72             Log.w(TAG, "Unable to reach IDeviceIdleController", e);
     73         }
     74     }
     75 
     76     private void refreshList() {
     77         mSysWhitelistedApps.clear();
     78         mWhitelistedApps.clear();
     79         try {
     80             String[] whitelistedApps = mDeviceIdleService.getFullPowerWhitelist();
     81             for (String app : whitelistedApps) {
     82                 mWhitelistedApps.add(app);
     83             }
     84             String[] sysWhitelistedApps = mDeviceIdleService.getSystemPowerWhitelist();
     85             for (String app : sysWhitelistedApps) {
     86                 mSysWhitelistedApps.add(app);
     87             }
     88         } catch (RemoteException e) {
     89             Log.w(TAG, "Unable to reach IDeviceIdleController", e);
     90         }
     91     }
     92 
     93     public static PowerWhitelistBackend getInstance() {
     94         return INSTANCE;
     95     }
     96 
     97 }
     98