BatteryController.java revision 853b070f19801058182ac1172d7c21c7651253c8 
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
17package com.android.systemui.statusbar.policy;
18
19import com.android.internal.app.IBatteryStats;
20import com.android.systemui.R;
21import com.android.systemui.statusbar.phone.StatusBarHeaderView;
22
23import android.content.BroadcastReceiver;
24import android.content.Context;
25import android.content.Intent;
26import android.content.IntentFilter;
27import android.os.BatteryManager;
28import android.os.BatteryStats;
29import android.os.RemoteException;
30import android.os.ServiceManager;
31import android.text.format.Formatter;
32import android.util.Log;
33
34import java.util.ArrayList;
35
36public class BatteryController extends BroadcastReceiver {
37    private static final String TAG = "StatusBar.BatteryController";
38
39    private ArrayList<BatteryStateChangeCallback> mChangeCallbacks = new ArrayList<>();
40
41    private int mLevel;
42    private boolean mPluggedIn;
43    private boolean mCharging;
44    private boolean mCharged;
45
46    public interface BatteryStateChangeCallback {
47        public void onBatteryLevelChanged(int level, boolean pluggedIn, boolean charging);
48    }
49
50    public BatteryController(Context context) {
51        IntentFilter filter = new IntentFilter();
52        filter.addAction(Intent.ACTION_BATTERY_CHANGED);
53        context.registerReceiver(this, filter);
54    }
55
56    public void addStateChangedCallback(BatteryStateChangeCallback cb) {
57        mChangeCallbacks.add(cb);
58        cb.onBatteryLevelChanged(mLevel, mPluggedIn, mCharging);
59    }
60
61    public void removeStateChangedCallback(BatteryStateChangeCallback cb) {
62        mChangeCallbacks.remove(cb);
63    }
64
65    public void onReceive(Context context, Intent intent) {
66        final String action = intent.getAction();
67        if (action.equals(Intent.ACTION_BATTERY_CHANGED)) {
68            mLevel = (int)(100f
69                    * intent.getIntExtra(BatteryManager.EXTRA_LEVEL, 0)
70                    / intent.getIntExtra(BatteryManager.EXTRA_SCALE, 100));
71            mPluggedIn = intent.getIntExtra(BatteryManager.EXTRA_PLUGGED, 0) != 0;
72
73            final int status = intent.getIntExtra(BatteryManager.EXTRA_STATUS,
74                    BatteryManager.BATTERY_STATUS_UNKNOWN);
75            mCharged = status == BatteryManager.BATTERY_STATUS_FULL;
76            mCharging = mCharged || status == BatteryManager.BATTERY_STATUS_CHARGING;
77
78            for (BatteryStateChangeCallback cb : mChangeCallbacks) {
79                cb.onBatteryLevelChanged(mLevel, mPluggedIn, mCharging);
80            }
81        }
82    }
83}
84