/**
* Handles the cursor thread; interrupts the old thread as soon as new one has been started.
*
* @param start start/stop flag
*/
final void cursor(final boolean start) {
cursor.stop();
if (start) cursor.start();
rend.cursor(start);
rend.repaint();
}
@Override
public void actionPerformed(final ActionEvent e) {
rend.cursor(!rend.cursor());
rend.repaint();
}