gistfile1.j

@implementation VerticalLayoutView : CPView
{
    double gapBetweenViews;
}

- (void)setGapBetweenViews:(double)aGap
{
    gapBetweenViews = aGap;
}

- (double)gapBetweenViews
{
    return gapBetweenViews;
}

- (void)layoutSubviews
{
    [super layoutSubviews];

    var subviews = [self subviews],
        currentY = 0;

    for (var i = 0, c = [subviews count]; i < c; i++)
    {
        var subview = [subviews objectAtIndex:i];
        CGRect currentFrame = [subview frame];
        var viewHeight = CGRectGetHeight(currentFrame);
        [subview setFrame:CGRectMake(0, currentY, CGRectGetWidth(currentFrame), viewHeight];
        
        currentY += viewHeight + [self gapBetweenViews];
    }
}

@end