WakeLock.java

/*
 * Copyright (C) 2008 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.koushikdutta.desktopsms;

import android.content.Context;
import android.os.PowerManager;

/**
 * Hold a wakelock that can be acquired in the AlarmReceiver and released in the
 * AlarmAlert activity
 */
class WakeLock
{
	private static PowerManager.WakeLock sWakeLock;
	private static final String LOGTAG = "RomManager";

	static void acquire(Context context)
	{
		release();

		PowerManager pm = (PowerManager) context.getSystemService(Context.POWER_SERVICE);
		
		sWakeLock = pm.newWakeLock(PowerManager.FULL_WAKE_LOCK | PowerManager.ACQUIRE_CAUSES_WAKEUP | PowerManager.ON_AFTER_RELEASE, LOGTAG);
		sWakeLock.acquire();
	}
	
	static void acquirePartial(Context context)
	{
		release();

		PowerManager pm = (PowerManager) context.getSystemService(Context.POWER_SERVICE);

		sWakeLock = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, LOGTAG);
		sWakeLock.acquire();
	}

	static void release()
	{
		if (sWakeLock != null)
		{
			sWakeLock.release();
			sWakeLock = null;
		}
	}
}