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Virtual tree viewer refresh bug [message #908921]

Thu, 06 September 2012 08:27

Ken Wenzel

Messages: 51
Registered: July 2009

Member

Hello,

RAP's virtual tree viewer implementation has a potential bug when refreshing elements.
I've created a simple application to demonstrate this.

The tree viewer starts with the following contents:
index.php/fa/11398/0/

Afterwards, when 'Test' is pressed, node '2' is moved below node '1' and treeviewer.refresh() is called.

This leads to the following representation:
index.php/fa/11399/0/

As can be seen, node '3' now contains the wrong child '2.1' which actually belongs to node '2'.
I've debugged this some time ago and I've seen that the underlying TreeItems really contain the wrong elements after some stage in the refresh process.

I would be glad if you could help me, since many of our tree viewers are based on ILazyTreeContentProvider's.

Best regards,
Ken

Attachment: before_refresh.jpg
(Size: 5.88KB, Downloaded 417 times)
Attachment: after_refresh.jpg
(Size: 6.22KB, Downloaded 384 times)
Attachment: rap.virtualtree.zip
(Size: 5.97KB, Downloaded 154 times)

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Re: Virtual tree viewer refresh bug [message #909065 is a reply to message #908921]

Thu, 06 September 2012 13:19

Tim Buschtoens

Messages: 396
Registered: July 2009

Senior Member

Hi.

I tested it against RAP 2.0M1 and SWT. Seems fine in SWT, while items
indeed contain the wrong text in RAP. It's not a rendering glitch
either, rather a bug in the RAP JFace implementation. Could you open a
bugzilla entry for this issue?

Greetings,
Tim

Am 06.09.2012 10:27, schrieb Ken Wenzel:
> Hello,
>
> RAP's virtual tree viewer implementation has a potential bug when refreshing elements.
> I've created a simple application to demonstrate this.
>
> The tree viewer starts with the following contents:
>
>
> Afterwards, when 'Test' is pressed, node '2' is moved below node '1' and treeviewer.refresh() is called.
>
> This leads to the following representation:
>
>
> As can be seen, node '3' now contains the wrong child '2.1' which actually belongs to node '2'.
> I've debugged this some time ago and I've seen that the underlying TreeItems really contain the wrong elements after some stage in the refresh process.
>
> I would be glad if you could help me, since many of our tree viewers are based on ILazyTreeContentProvider's.
>
> Best regards,
> Ken
>

--
Tim Buschtöns

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