Re: JScrollPane - ScrollB

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From	"Ian Wilson" <ian.wilson@THRWHITE.remove-dii-this>
Subject	Re: JScrollPane - ScrollB
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Date	Wed, 27 Apr 2011 15:26:01 GMT
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  To: comp.lang.java.gui
Bart Cremers wrote:
> Bill wrote:
> 
>>Hi All,
>>
>>    I have a JScrollPane containing a JTable.
>>
>>    I programatically traverse the JTable by selecting rows and  scrolling
>>the JTable
>>
>>            jTable.scrollRectToVisible(r);
>>
>>
>>    However the scrollbar doesn't get updated until after all my processing
>>has completed, then the scrollbar 'jumps' to the bottom. Is there any way to
>>get it to be updated while the jTable is being processed, so the user has
>>some indication of how far the processing has progressed?
>>
>>TIA
>>
>>Bill
> 
> 
> The issue here probably is the fact that Java doesn't get the time to
> repaint the scrollpane/table.
> 
> To solve this allow remove control from your traverse thread (hopefully
> this is a different thread then the event thread) for a short period by
> using Thread.yield() or thread.sleep(50).
> 

I wonder if thread priorities might also be an issue?

On my non-GUI worker threads I use
   t.setPriority(Thread.NORM_PRIORITY);
before invoking
   t.start();.

Just a thought.

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Thread

JScrollPane - ScrollBar - "Bill" <bill@THRWHITE.remove-dii-this> - 2011-04-27 15:25 +0000
  Re: JScrollPane - ScrollB "Bart Cremers" <bart.cremers@THRWHITE.remove-dii-this> - 2011-04-27 15:26 +0000
    Re: JScrollPane - ScrollB "Ian Wilson" <ian.wilson@THRWHITE.remove-dii-this> - 2011-04-27 15:26 +0000
    Re: JScrollPane - ScrollB "Bill" <bill@THRWHITE.remove-dii-this> - 2011-04-27 15:26 +0000
  Re: JScrollPane - ScrollB "Nigel Wade" <nigel.wade@THRWHITE.remove-dii-this> - 2011-04-27 15:26 +0000

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