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Re: JTree - subnode not a

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  To: comp.lang.java.gui
On 13/08/2008 05:43, pelakh@yahoo.com allegedly wrote:
> I have a simple JTree in one of my panels, using the DefaultTreeModel
> populated with
> my own FileTreeNode objects, which extend DefaultMutableTreeNodes. I
> am adding
> nodes into the tree by doing parentNode.add(subNode), which seems to
> work just
> fine in most cases. However, in a particular case, my new nodes don't
> show up, even
> though I can find them both in the children of the parent and through
> the tree model.
> Right after the add, I call repaint to update the tree, and then trace
> some debug information
> I get the following:
> 
> *** This is the first insertion - it works fine ***
> Row for freq [TreeRoot, Smooth Files, AC #377, 20.250] is 21
> Row for new path [TreeRoot, Smooth Files, AC #377, 20.250, Baseline 1]
> is 22 bounds are java.awt.Rectangle[x=80,y=420,width=82,height=20]
> 
> *** This is the same trace for any consequent insertion - does not
> work***
> Row for freq [TreeRoot, Smooth Files, AC #377, 20.250] is 21
> Row for new path [TreeRoot, Smooth Files, AC #377, 20.250, Baseline 2]
> is -1 bounds are null
> 
> It is as if the TreeUI completely loses this node. Furthermore, the
> vertical line preceding the
> label of 'Baseline 1' disappears after 'Baseline 2' is added, but that
> is the only visible side
> effect.
> 
> So, where has my missing node(s) gone?

Do you perform the node addition on the event dispatch thread (EDT)? You 
ought to.

-- 
DF.

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JTree - subnode not added "pelakh" <pelakh@THRWHITE.remove-dii-this> - 2011-04-27 15:47 +0000
  Re: JTree - subnode not a "Daniele Futtorovic" <daniele.futtorovic@THRWHITE.remove-dii-this> - 2011-04-27 15:47 +0000
    Re: JTree - subnode not a "John B. Matthews" <john.b..matthews@THRWHITE.remove-dii-this> - 2011-04-27 15:47 +0000
      Re: JTree - subnode not a "pelakh" <pelakh@THRWHITE.remove-dii-this> - 2011-04-27 15:48 +0000

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