jtable and the scrollbar

[jefff willis]

Has anyone ever programitcally changed their horizontal scrollbar?

I'm using a JTable in a scrollPane and I need to take three simple steps:

1. get the current position of the horizontal scroll bar
2. recreate the table with new data (not a problem)
3. reposition the scrollbar on the new table to the same position as the old table

Can anyone give me an idea how to get the horizontal scrollbar position?

I tried this approach but haven't had much luck:

  
    scrollPane.remove( oldTable );
    Point p = scrollPane.getViewport().getViewPosition();
    scrollPane.setViewportView( newTable );
    scrollPane.getViewport().setViewPosition(p);

[Andy Nimmo]

Jeff,

Have you tried using the ScrollPane method

setScrollPosition( int x, int y )

You can use it with the Point instance that you've already created in your example code:

setScrollPosition( Point p )

If I had the time I would try this out myself and give you a definitive answer. Try dropping the references to viewPort as well.

Might also be worth getting the scroll position BEFORE you remove the object whose scroll position you're interested in, just a thought.

So try this:

Point p = scrollPane.getScrollPosition();
scrollPane.remove( oldTable );    
scrollPane.setViewportView( newTable );
scrollPane.setScrollPosition(p);

Hope there's something useful to you there.

Andy.