[news.eclipse.platform] Re: TreeViewerFocusCellManager support for SWT.M

[Tom Schindl <tom.schindl@xxxxxxxxxxxxxxx>]

Greg Babcock schrieb:
> Tom,
> 
> Thanks for the timely response and the insight.
> 
> One of the things I realized is that if the SWT.MULTI flag is set the 
> highligted cell is probably (I have only done limited testing) belongs to 
> the last element in the selection list.  It may be wise to add an Assert 
> !SWT.MULTI to the FocusCellOwnerDrawHighlighter.
> 
> In any case I have been able to get the selection behavior I was looking for 
> by only performing cell highlighing when there is a single selection. 
> Instead of going though the effort to link in the source for the entire 
> jface class to my I just copied the FocusCellOwnerDrawHighlighter class to 
> my workspace and made the modification.  To do so I had to replace 
> viewer.getViewerRowFromItem(event.item); with  focusCell.getViewerRow(); 
> because the first one was hidden.  Under what circumstances would the two 
> methods return different results?


When a ViewerCell is detached from the viewer we clone it because we
internally reuse the ViewerRow and Viewercell IIRC.

I guess I didn't get what you describe do you have a fully running
example so that I can see the modified behaviour? Maybe it is feasable
and a common use case so that we could provide a switch between the 2?

Tom

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Tom Schindl                                          JFace-Committer
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