Prevent JTable cell editor from leaving "edit mode" on validation failure

Question

I'd like to obtain the following behaviour in a JTable:

• user starts editing a cell - the cell switches to a JTextField as usual;
• when the user tabs out or clicks in another cell I'd like to validate the input and give a visual clue when validation fails (for example change the background color of JTextField) and prevent the cell from commiting AND switching back to default renderer (JLabel).

So far I've overridden DefaultCellEditor. I can hook into getCellEditorValue and make the validation there, but I don't know how to prevent the cell from going back to the default renderer.

Thanks!

Answer 1

What about JTable's method editingStopped()? See also

/**
        * Stops editing and
        * returns true to indicate that editing has stopped.
        * This method calls <code>fireEditingStopped</code>.
        *
        * @return  true 
        */         
     public boolean stopCellEditing() { 
        fireEditingStopped(); 
        return true;
    }

in the DefaultCellEditor