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 */
16package com.android.settings.fuelgauge;
17
18import android.os.IDeviceIdleController;
19import android.os.RemoteException;
20import android.os.ServiceManager;
21import android.util.ArraySet;
22import android.util.Log;
23
24
25/**
26 * Handles getting/changing the whitelist for the exceptions to battery saving features.
27 */
28public 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