<AWT Dev> <Swing Dev> [8] Review request for 8023474: First mousepress doesn't start editing in JTree

Anthony Petrov anthony.petrov at oracle.com
Thu Aug 22 06:28:57 PDT 2013

Hi Dmitry,

A few comments:

1. The concept of validate roots has been extended to AWT components 
since JDK 7. Therefore, I suggest to use the same logic regardless of 
whether the editor is an instance of JComponent or not.

2. What you're trying to implement here, is actually called 
revalidateSynchronously(), as opposed to the regular revalidate() 
method, which in Swing is asynchronous. I believe that rS() might be 
very much useful in many cases. Therefore, I suggest to add a 
package-private java.awt.Component.revalidateSynchronously(), and call 
it via the AWTAccessor from BasicTreeUI.java. Note that the current 
Component.revalidate() should simply call the new rS() directly, and the 
rS() may reuse the current implementation of the Component.revalidate().

> 2230     // The implementation of the method is copied from SwingUtilities

Copying an implementation is almost always wrong. It might be better to 
access a method from another package via e.g. an accessor, or 
reflection, or otherwise find a way to share this code rather than copy 
it. However, I think you won't need this code anyway if we implement the 
suggestion #2 above.

4. Is there a similar problem with JTable custom editors? What else 
Swing components allow for editors?

best regards,

On 08/22/13 15:08, dmitry markov wrote:
> Hello,
> Could you review the fix, please?
> bug: http://bugs.sun.com/view_bug.do?bug_id=8023474
> webrev: http://cr.openjdk.java.net/~dmarkov/8023474/webrev.00/
> The method BasicTreeUI.startEditing() should find the first valid root
> for the editingComponent and call validateUnconditionally() for it
> instead of editingComponent.revalidate() invocation.
> Thanks,
> Dmitry

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