protected String changePressed() {
if (change == null) return null;
Properties p = new Properties();
p.put("shell", bar.getControl().getShell()); // $NON-NLS-1$
change.setObject(p);
int i = change.execute();
if (i != 0) return null;
return p.getProperty("value"); // $NON-NLS-1$
}
protected Control getChangeControl(Composite parent) {
if (bar.getControl() != null && !bar.getControl().isDisposed()) {
return bar.getControl();
}
return bar.createControl(parent);
}