1/*
2 * Copyright (C) 2008 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.deskclock;
18
19import android.content.Context;
20import android.os.PowerManager;
21
22/**
23 * Utility class to hold wake lock in app.
24 */
25public class AlarmAlertWakeLock {
26
27    private static PowerManager.WakeLock sCpuWakeLock;
28
29    public static PowerManager.WakeLock createPartialWakeLock(Context context) {
30        PowerManager pm = (PowerManager) context.getSystemService(Context.POWER_SERVICE);
31        return pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, Log.LOGTAG);
32    }
33
34    public static void acquireCpuWakeLock(Context context) {
35        if (sCpuWakeLock != null) {
36            return;
37        }
38
39        sCpuWakeLock = createPartialWakeLock(context);
40        sCpuWakeLock.acquire();
41    }
42
43    public static void acquireScreenCpuWakeLock(Context context) {
44        if (sCpuWakeLock != null) {
45            return;
46        }
47        PowerManager pm = (PowerManager) context.getSystemService(Context.POWER_SERVICE);
48        sCpuWakeLock = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK
49                | PowerManager.ACQUIRE_CAUSES_WAKEUP | PowerManager.ON_AFTER_RELEASE, Log.LOGTAG);
50        sCpuWakeLock.acquire();
51    }
52
53    public static void releaseCpuLock() {
54        if (sCpuWakeLock != null) {
55            sCpuWakeLock.release();
56            sCpuWakeLock = null;
57        }
58    }
59}
60