1 /*
2  * Copyright (C) 2017 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 
17 package com.android.settings.fuelgauge;
18 
19 import android.content.BroadcastReceiver;
20 import android.content.Context;
21 import android.content.Intent;
22 import android.content.IntentFilter;
23 import android.os.BatteryManager;
24 import android.os.PowerManager;
25 import android.util.Log;
26 
27 public class BatterySaverReceiver extends BroadcastReceiver {
28     private static final String TAG = "BatterySaverReceiver";
29     private static final boolean DEBUG = false;
30     private boolean mRegistered;
31     private Context mContext;
32     private BatterySaverListener mBatterySaverListener;
33 
BatterySaverReceiver(Context context)34     public BatterySaverReceiver(Context context) {
35         mContext = context;
36     }
37 
38     @Override
onReceive(Context context, Intent intent)39     public void onReceive(Context context, Intent intent) {
40         if (DEBUG) Log.d(TAG, "Received " + intent.getAction());
41         String action = intent.getAction();
42         if (PowerManager.ACTION_POWER_SAVE_MODE_CHANGING.equals(action)) {
43             if (mBatterySaverListener != null) {
44                 mBatterySaverListener.onPowerSaveModeChanged();
45             }
46         } else if (Intent.ACTION_BATTERY_CHANGED.equals(action)) {
47             // disable BSM switch if phone is plugged in
48             if (mBatterySaverListener != null) {
49                 final boolean pluggedIn = intent.getIntExtra(BatteryManager.EXTRA_PLUGGED, 0) != 0;
50                 mBatterySaverListener.onBatteryChanged(pluggedIn);
51             }
52         }
53     }
54 
setListening(boolean listening)55     public void setListening(boolean listening) {
56         if (listening && !mRegistered) {
57             final IntentFilter ifilter = new IntentFilter();
58             ifilter.addAction(PowerManager.ACTION_POWER_SAVE_MODE_CHANGING);
59             ifilter.addAction(Intent.ACTION_BATTERY_CHANGED);
60             mContext.registerReceiver(this, ifilter);
61             mRegistered = true;
62         } else if (!listening && mRegistered) {
63             mContext.unregisterReceiver(this);
64             mRegistered = false;
65         }
66     }
67 
setBatterySaverListener(BatterySaverListener lsn)68     public void setBatterySaverListener(BatterySaverListener lsn) {
69         mBatterySaverListener = lsn;
70     }
71 
72     public interface BatterySaverListener {
onPowerSaveModeChanged()73         void onPowerSaveModeChanged();
onBatteryChanged(boolean pluggedIn)74         void onBatteryChanged(boolean pluggedIn);
75     }
76 }
77