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 java.util.ArrayList;
20
21import android.bluetooth.BluetoothAdapter.BluetoothStateChangeCallback;
22import android.content.BroadcastReceiver;
23import android.content.Context;
24import android.content.Intent;
25import android.content.IntentFilter;
26import android.os.BatteryManager;
27import android.util.Slog;
28import android.widget.ImageView;
29import android.widget.TextView;
30
31import com.android.systemui.R;
32
33public class BatteryController extends BroadcastReceiver {
34    private static final String TAG = "StatusBar.BatteryController";
35
36    private Context mContext;
37    private ArrayList<ImageView> mIconViews = new ArrayList<ImageView>();
38    private ArrayList<TextView> mLabelViews = new ArrayList<TextView>();
39
40    private ArrayList<BatteryStateChangeCallback> mChangeCallbacks =
41            new ArrayList<BatteryStateChangeCallback>();
42
43    public interface BatteryStateChangeCallback {
44        public void onBatteryLevelChanged(int level, boolean pluggedIn);
45    }
46
47    public BatteryController(Context context) {
48        mContext = context;
49
50        IntentFilter filter = new IntentFilter();
51        filter.addAction(Intent.ACTION_BATTERY_CHANGED);
52        context.registerReceiver(this, filter);
53    }
54
55    public void addIconView(ImageView v) {
56        mIconViews.add(v);
57    }
58
59    public void addLabelView(TextView v) {
60        mLabelViews.add(v);
61    }
62
63    public void addStateChangedCallback(BatteryStateChangeCallback cb) {
64        mChangeCallbacks.add(cb);
65    }
66
67    public void onReceive(Context context, Intent intent) {
68        final String action = intent.getAction();
69        if (action.equals(Intent.ACTION_BATTERY_CHANGED)) {
70            final int level = intent.getIntExtra(BatteryManager.EXTRA_LEVEL, 0);
71            final boolean plugged = intent.getIntExtra(BatteryManager.EXTRA_PLUGGED, 0) != 0;
72            final int icon = plugged ? R.drawable.stat_sys_battery_charge
73                                     : R.drawable.stat_sys_battery;
74            int N = mIconViews.size();
75            for (int i=0; i<N; i++) {
76                ImageView v = mIconViews.get(i);
77                v.setImageResource(icon);
78                v.setImageLevel(level);
79                v.setContentDescription(mContext.getString(R.string.accessibility_battery_level,
80                        level));
81            }
82            N = mLabelViews.size();
83            for (int i=0; i<N; i++) {
84                TextView v = mLabelViews.get(i);
85                v.setText(mContext.getString(R.string.status_bar_settings_battery_meter_format,
86                        level));
87            }
88
89            for (BatteryStateChangeCallback cb : mChangeCallbacks) {
90                cb.onBatteryLevelChanged(level, plugged);
91            }
92        }
93    }
94}
95