Source

baseten / Sources / BXSystemEventNotifier.m

Full commit
//
// BXSystemEventNotifier.m
// BaseTen
//
// Copyright (C) 2010 Marko Karppinen & Co. LLC.
//
// Before using this software, please review the available licensing options
// by visiting http://www.karppinen.fi/baseten/licensing/ or by contacting
// us at sales@karppinen.fi. Without an additional license, this software
// may be distributed only in compliance with the GNU General Public License.
//
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License, version 2.0,
// as published by the Free Software Foundation.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
//
// $Id$
//

#import "BXSystemEventNotifier.h"
#import "BXIOKitSystemEventNotifier.h"
#import "BXProbes.h"
#import "BXValidationLock.h"

#import "../BaseTenAppKit/Sources/BXAppKitSystemEventNotifier.h"
Class BXAppKitSystemEventNotifierClass = Nil;



NSString * const kBXSystemEventNotifierProcessWillExitNotification = @"kBXSystemEventNotifierProcessWillExitNotification";
NSString * const kBXSystemEventNotifierSystemWillSleepNotification = @"kBXSystemEventNotifierSystemWillSleepNotification";
NSString * const kBXSystemEventNotifierSystemDidWakeNotification   = @"kBXSystemEventNotifierSystemDidWakeNotification";



@implementation BXSystemEventNotifier
+ (void) initialize
{
	static BOOL tooLate = NO;
	if (! tooLate)
	{
		tooLate = YES;
		BXAppKitSystemEventNotifierClass = NSClassFromString (@"BXAppKitSystemEventNotifier");
	}
}


+ (id) copyNotifier
{
	id retval = nil;
	if (BXAppKitSystemEventNotifierClass)
		retval = [BXAppKitSystemEventNotifierClass copyNotifier];
	else
		retval = [BXIOKitSystemEventNotifier copyNotifier];
	
	return retval;
}


- (id) init
{
	if ([self class] == [BXSystemEventNotifier class])
		[self doesNotRecognizeSelector: _cmd];
	
	if ((self = [super init]))
	{
		mValidationLock = [[BXValidationLock alloc] init];
	}
	return self;
}


- (void) dealloc
{
	[self invalidate];
	[mValidationLock release];
	[super dealloc];
}


- (void) install
{
}


- (void) invalidate
{
	[mValidationLock invalidate];
}


- (void) processWillExit
{
	if ([mValidationLock lockIfValid])
	{
		BASETEN_BEGIN_EXIT_PREPARATION ();
		NSNotificationCenter *nc = [NSNotificationCenter defaultCenter];
		[nc postNotificationName: kBXSystemEventNotifierProcessWillExitNotification object: self];
		BASETEN_END_EXIT_PREPARATION ();
		
		[mValidationLock unlock];
	}
}


- (void) systemWillSleep
{
	if ([mValidationLock lockIfValid])
	{
		BASETEN_BEGIN_SLEEP_PREPARATION ();
		NSNotificationCenter *nc = [NSNotificationCenter defaultCenter];
		[nc postNotificationName: kBXSystemEventNotifierSystemWillSleepNotification object: self];
		BASETEN_END_SLEEP_PREPARATION ();
		
		[mValidationLock unlock];
	}
}


- (void) systemDidWake
{
	if ([mValidationLock lockIfValid])
	{
		BASETEN_BEGIN_WAKE_PREPARATION ();
		NSNotificationCenter *nc = [NSNotificationCenter defaultCenter];
		[nc postNotificationName: kBXSystemEventNotifierSystemDidWakeNotification object: self];
		BASETEN_END_WAKE_PREPARATION ();
		
		[mValidationLock unlock];
	}
}
@end