1 /* 2 * Copyright (C) 2010 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.systemui.statusbar.policy; 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 import java.io.FileDescriptor; 28 import java.io.PrintWriter; 29 import java.util.ArrayList; 30 31 public class BatteryController extends BroadcastReceiver { 32 private static final String TAG = "BatteryController"; 33 private static final boolean DEBUG = Log.isLoggable(TAG, Log.DEBUG); 34 35 private final ArrayList<BatteryStateChangeCallback> mChangeCallbacks = new ArrayList<>(); 36 private final PowerManager mPowerManager; 37 38 private int mLevel; 39 private boolean mPluggedIn; 40 private boolean mCharging; 41 private boolean mCharged; 42 private boolean mPowerSave; 43 BatteryController(Context context)44 public BatteryController(Context context) { 45 mPowerManager = (PowerManager) context.getSystemService(Context.POWER_SERVICE); 46 47 IntentFilter filter = new IntentFilter(); 48 filter.addAction(Intent.ACTION_BATTERY_CHANGED); 49 filter.addAction(PowerManager.ACTION_POWER_SAVE_MODE_CHANGED); 50 filter.addAction(PowerManager.ACTION_POWER_SAVE_MODE_CHANGING); 51 context.registerReceiver(this, filter); 52 53 updatePowerSave(); 54 } 55 dump(FileDescriptor fd, PrintWriter pw, String[] args)56 public void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 57 pw.println("BatteryController state:"); 58 pw.print(" mLevel="); pw.println(mLevel); 59 pw.print(" mPluggedIn="); pw.println(mPluggedIn); 60 pw.print(" mCharging="); pw.println(mCharging); 61 pw.print(" mCharged="); pw.println(mCharged); 62 pw.print(" mPowerSave="); pw.println(mPowerSave); 63 } 64 addStateChangedCallback(BatteryStateChangeCallback cb)65 public void addStateChangedCallback(BatteryStateChangeCallback cb) { 66 mChangeCallbacks.add(cb); 67 cb.onBatteryLevelChanged(mLevel, mPluggedIn, mCharging); 68 } 69 removeStateChangedCallback(BatteryStateChangeCallback cb)70 public void removeStateChangedCallback(BatteryStateChangeCallback cb) { 71 mChangeCallbacks.remove(cb); 72 } 73 onReceive(Context context, Intent intent)74 public void onReceive(Context context, Intent intent) { 75 final String action = intent.getAction(); 76 if (action.equals(Intent.ACTION_BATTERY_CHANGED)) { 77 mLevel = (int)(100f 78 * intent.getIntExtra(BatteryManager.EXTRA_LEVEL, 0) 79 / intent.getIntExtra(BatteryManager.EXTRA_SCALE, 100)); 80 mPluggedIn = intent.getIntExtra(BatteryManager.EXTRA_PLUGGED, 0) != 0; 81 82 final int status = intent.getIntExtra(BatteryManager.EXTRA_STATUS, 83 BatteryManager.BATTERY_STATUS_UNKNOWN); 84 mCharged = status == BatteryManager.BATTERY_STATUS_FULL; 85 mCharging = mCharged || status == BatteryManager.BATTERY_STATUS_CHARGING; 86 87 fireBatteryLevelChanged(); 88 } else if (action.equals(PowerManager.ACTION_POWER_SAVE_MODE_CHANGED)) { 89 updatePowerSave(); 90 } else if (action.equals(PowerManager.ACTION_POWER_SAVE_MODE_CHANGING)) { 91 setPowerSave(intent.getBooleanExtra(PowerManager.EXTRA_POWER_SAVE_MODE, false)); 92 } 93 } 94 isPowerSave()95 public boolean isPowerSave() { 96 return mPowerSave; 97 } 98 updatePowerSave()99 private void updatePowerSave() { 100 setPowerSave(mPowerManager.isPowerSaveMode()); 101 } 102 setPowerSave(boolean powerSave)103 private void setPowerSave(boolean powerSave) { 104 if (powerSave == mPowerSave) return; 105 mPowerSave = powerSave; 106 if (DEBUG) Log.d(TAG, "Power save is " + (mPowerSave ? "on" : "off")); 107 firePowerSaveChanged(); 108 } 109 fireBatteryLevelChanged()110 private void fireBatteryLevelChanged() { 111 final int N = mChangeCallbacks.size(); 112 for (int i = 0; i < N; i++) { 113 mChangeCallbacks.get(i).onBatteryLevelChanged(mLevel, mPluggedIn, mCharging); 114 } 115 } 116 firePowerSaveChanged()117 private void firePowerSaveChanged() { 118 final int N = mChangeCallbacks.size(); 119 for (int i = 0; i < N; i++) { 120 mChangeCallbacks.get(i).onPowerSaveChanged(); 121 } 122 } 123 124 public interface BatteryStateChangeCallback { onBatteryLevelChanged(int level, boolean pluggedIn, boolean charging)125 void onBatteryLevelChanged(int level, boolean pluggedIn, boolean charging); onPowerSaveChanged()126 void onPowerSaveChanged(); 127 } 128 } 129