gistfile1.mm

+ (void)show:(NSString *)message confirmed:(ConfirmationBlock)confirmBlock canceled:(ConfirmationBlock)canceledBlock {
  if(blocks == nil) {
    blocks = [[NSMutableDictionary dictionary] retain];
    delegate = [[BlockConfirmationAlert alloc] init];
  }  
  
  UIAlertView *alertView = [[[UIAlertView alloc] initWithTitle:@"Confirm" message:message delegate:delegate cancelButtonTitle:@"Cancel" otherButtonTitles:@"Confirm", nil] autorelease];
  NSDictionary *blockDict = [NSDictionary dictionaryWithObjectsAndKeys:[[confirmBlock copy] autorelease], @"confirm", [[canceledBlock copy] autorelease], @"cancel", nil];  
  [blocks setObject:blockDict forKey:[NSNumber numberWithUnsignedInt:[alertView hash]]];  
  [alertView show];
}

- (void)alertView:(UIAlertView *)alertView didDismissWithButtonIndex:(NSInteger)buttonIndex {
  NSNumber *key = [NSNumber numberWithUnsignedInt:[alertView hash]];
  NSDictionary *blockDict = [blocks objectForKey:key];
  
  if (alertView.cancelButtonIndex == buttonIndex) {
    ((ConfirmationBlock)[blockDict objectForKey:@"cancel"])(alertView);
  } else {
    ((ConfirmationBlock)[blockDict objectForKey:@"confirm"])(alertView);
  }
  
  [blocks removeObjectForKey:key];
}