final Button crsButton = new Button(crsGroup, SWT.BORDER);
crsButton.setText(" Choose CRS ");
crsButton.addSelectionListener(new org.eclipse.swt.events.SelectionAdapter(){
public void widgetSelected( org.eclipse.swt.events.SelectionEvent e ) {
final ChooseCoordinateReferenceSystemDialog crsChooser = new ChooseCoordinateReferenceSystemDialog();
crsChooser.open(new Shell(Display.getDefault()));
CoordinateReferenceSystem readCrs = crsChooser.getCrs();
if (readCrs == null)
return;
crsText.setText(readCrs.getName().toString());
crsText.setData(readCrs);
}