Fire an NSTimer using a block as execution code.

NSAlert+Blocks

//
//  NSAlertWithBlocks.h
//
//  Created by Thomas Davie on 26/12/2009.
//  Copyright 2009 Thomas Davie. All rights reserved.
//

#import <Cocoa/Cocoa.h>


@interface NSAlert (WithBlocks)

- (void)beginSheetModalForWindow:(NSWindow *)window completionHandler:(void(^)(NSInteger result))completionHandler;

@end

NSAlert+Blocks.m

//
//  NSAlertWithBlocks.m
//
//  Created by Thomas Davie on 26/12/2009.
//  Copyright 2009 Thomas Davie. All rights reserved.
//

#import "NSAlertWithBlocks.h"

@interface NSAlert (WithBlocksPrivate)

- (void)alertDidEnd:(NSAlert *)alert returnCode:(NSInteger)returnCode contextInfo:(void *)contextInfo;

@end


@implementation NSAlert (WithBlocks)

- (void)beginSheetModalForWindow:(NSWindow *)window completionHandler:(void(^)(NSInteger result))completionHandler
{
	[self beginSheetModalForWindow:window modalDelegate:self didEndSelector:@selector(alertDidEnd:returnCode:contextInfo:) contextInfo:[completionHandler copy]];
}

- (void)alertDidEnd:(NSAlert *)alert returnCode:(NSInteger)returnCode contextInfo:(void *)contextInfo
{
	void(^handler)(NSInteger result) = (void(^)(NSInteger result))contextInfo;
	
	handler(returnCode);
	
	[handler release];
}

@end