<AWT Dev> <Swing Dev> Review request #3: 6852592 (revalidate() must be smarter)

Peter Zhelezniakov Peter.Zhelezniakov at Sun.COM
Thu Jul 23 08:34:22 PDT 2009

Christopher Deckers wrote:
> While looking at some of the changes, I saw some existing code which I
> do not really understand: why is JTextField having a special logic in
> isValidateRoot in case it is not in a JViewPort? And if this component
> has a special handling, why not other components?

When a text field is in a viewport, it grows indefinitely as more text 
is typed into it, and lets the viewport handle scrolling. A standalone 
text field, on the other hand, starts scrolling text once it exceeds 
available width, thus acting as a viewport by itself. So invalidation 
can safely stop at such text fields -- this is why they are validate roots.


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