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changing headers on JTable caused other problems

Alan Shiers
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Joined: Sep 24, 2003
Posts: 237
Hi Guys,

I'm working with a JTable which sets up certain columns with cell renderers and editors. My application allows the user to change the interface to a different language, so JMenuItems, buttons, etc. change their text and I've set it up so that the header on the JTable changes as well. Two lines of code make that happen:



All this part works as expected, however, after the call to fireTableStructureChanged() has completed, the columns that were governed by cell renderers and editors are no longer in effect. Those cells have reverted back to working as normal JLabel cells. What happened? How do I prevent losing the renderers and editors on those columns?

See below for additional code, which might help.

Alan

Rob Camick
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Joined: Jun 13, 2009
Posts: 2171
    
    7
the columns that were governed by cell renderers and editors are no longer in effect. Those cells have reverted back to working as normal JLabel cells.


When the fireTableStructureChaged() event occurs, the TableColumnModel is rebuilt, which reacreates all the TableColumns, so you lose the renderers/editors/ that you previously added.

How do I prevent losing the renderers and editors on those columns?


Don't invoke the fireTableStructureChanged() method. Instead update your TableColumns of the TableColumnManger manually. You can use the setHeaderValue() method to update the header text. You will then need to invoke repaint() on the table header.
Alan Shiers
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Joined: Sep 24, 2003
Posts: 237
Thanks, I'll give that a try.

Alan
 
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