...to fill a carousel, the buttons don’t update to the correct state i.e. they should both be disabled but the next button isn’t.

Anyone from the prototype team want to acknowledge this is a bug?

I ran into this problem with a carousel that I have dynamically generated. The carousel shows two images at a time, but when there is only one image, the next arrow wouldn’t go to the disabled state.

So under the updateNextButton: function(), I added this:

if (!this.nextButton.hasClassName(nextClassName) && lastPosition < size) { this.nextButton.addClassName(nextClassName); this.fire(‘nextButton:disabled’);
}

This should work for any number of images.