<AWT Dev> <Swing Dev> Lw/Hw mixing vs revalidate()/validate()/invalidate()

Anthony Petrov Anthony.Petrov at Sun.COM
Wed Jul 15 08:12:01 PDT 2009

On 07/14/2009 06:55 PM, Alexander Potochkin wrote:
>> So may I assume that the silence means agreement?
> Yep!
> I see no problems with overridden JComponent.invalidate()
>> If there's no objections coming within about a week, then I'm going to 
>> make a patch with an overridden JComponent.invalidate() method.
> There is no need to wait, please send the patch when it is ready

best regards,

> Thanks
> alexp
>> -- 
>> best regards,
>> Anthony
>> On 07/08/2009 06:20 PM, Anthony Petrov wrote:
>>> Just to revive the discussion...
>>> On 06/20/2009 05:52 PM, Christopher Deckers wrote:
>>>> 2. Make it so that revalidate does not mark the ancestors of the
>>>> validate root invalid. I wonder if this is a sensible approach though.
>>> I guess you mean an overridden JComponent.invalidate() here, since 
>>> revalidate() calls this method to invalidate the component hierarchy.
>>> As we understand from the previous discussions, the root problem is 
>>> indeed the AWT's invalidate() method that goes too far doing its job. 
>>> Since Swing introduces the concept of "validate root", it seems 
>>> really natural to me to override the JComponent.invalidate() method 
>>> accordingly. At least I can't imagine a problem caused by choosing 
>>> this way.
>>> What do Swing people think about that?

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