gistfile1.m

- (void) handleKeyboardNotification:(NSNotification *)inNotification {

	if (!self.contentView)
	return;
	
	CGRect (^rectFromScreenRect) (CGRect inRect) = ^ (CGRect inRect) { return [self.view convertRect:[self.view.window convertRect:inRect fromWindow:nil] fromView:nil]; };
	
	id (^notificationObject) (id inKey) = ^ (id inKey) { return [inNotification.userInfo objectForKey:inKey]; };
	
	CGRect (^rectFromValue) (id inValueObject) = ^ (id inValueObject) { return [((NSValue *)inValueObject) CGRectValue]; };
	
	
	CGFloat keyboardMinYFrom = rectFromScreenRect(rectFromValue(notificationObject(UIKeyboardFrameBeginUserInfoKey))).origin.y,
		keyboardMinYTo = rectFromScreenRect(rectFromValue(notificationObject(UIKeyboardFrameEndUserInfoKey))).origin.y;
		
	UIViewAnimationCurve animationCurve = [(NSNumber *)notificationObject(UIKeyboardAnimationCurveUserInfoKey) intValue];
	NSTimeInterval animationDuration = [(NSNumber *)notificationObject(UIKeyboardAnimationDurationUserInfoKey) doubleValue];
	
	if (keyboardMinYFrom == keyboardMinYTo)
	return;
	
	CGFloat	viewMaxY = self.view.bounds.size.height,
		contentViewMaxYFrom = self.contentView.frame.origin.y + self.contentView.frame.size.height,
		contentViewMaxYTo = (keyboardMinYTo > viewMaxY) ? viewMaxY : keyboardMinYTo;
	
		
	[UIView beginAnimations:@"MLAutoresizingModalFormSheetViewControllerContentViewResizingAnimation" context:nil];
	[UIView setAnimationCurve:animationCurve];
	[UIView setAnimationDuration:animationDuration];
	
		CGRect contentViewFrameEnd = contentView.frame;
		contentViewFrameEnd.size.height += (contentViewMaxYTo - contentViewMaxYFrom);
		contentView.frame = contentViewFrameEnd;
	
	[UIView commitAnimations];

}