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Re: [platform-swt-dev] JFace TableViewer with VIRTUAL sample
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Hmm, is there anyone reading/monitoring this mailing list? ...
--- Robert Enyedi <renyedi@xxxxxxxxx> wrote:
> Hi,
>
> I've been extremely pleased to see the VIRTUAL flag support added for the
> JFace
> TableViewer starting with 3.1M3. It is very required to have well performing
> tables in JFace.
>
> My problem is that I cannot figure out how to use this feature. Or maybe I've
> found a bug.
>
> I created a sample view with a TableViewer in it using the Eclipse plug-in
> creation wizard. In the resulting code I changed three things:
>
> 1. The TableViewer is created with the VIRTUAL flag:
>
> new TableViewer(parent, SWT.MULTI | SWT.H_SCROLL | SWT.V_SCROLL |
> SWT.VIRTUAL)
>
> 2. The view content provider's getElements() method returns an array of
> 100,000
> Strings.
>
> 3. I removed the sorter.
>
> While the content is created in 1-2 seconds, when the VIRTUAL flag is set,
> the
> display of the content takes a lot (around 1 minute). However, if the VIRTUAL
> flag is not specified, the display is much faster (but not that fast - around
> 5-6 seconds).
>
> What am I doing wrong? Why doesn't the VIRTUAL flag reduce the display time
> to
> around 1-2 seconds? Isn't this what it's supposed to do?
>
> Regards,
> Robert
>
>
>
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