Re: [platform-swt-dev] JFace TableViewer with VIRTUAL sample

[Carolyn MacLeod <Carolyn_MacLeod@xxxxxxxxxx>]

You should have received Veronika's
Jan 20th reply.
Here it is again:

Support for Table with the style VIRTUAL is only just
now being added to 
JFace.   Not 100% sure of the date when full support will be in place
- 
you need to ask this on the eclipse.platform newsgroup.

Carolyn

Robert Enyedi <renyedi@xxxxxxxxx>
Sent by: platform-swt-dev-admin@xxxxxxxxxxx

01/26/2005 01:54 AM

Please respond to
platform-swt-dev

To	platform-swt-dev@xxxxxxxxxxx
cc
Subject	Re: [platform-swt-dev] JFace TableViewer with VIRTUAL sample

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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