/**
  * Check wether the display is enabled or not.
  *
  * @return True if the display is enabled.
  */
 @Override
 public boolean isEnabled() {
   return glassPane.isEnabled();
 }
 /**
  * Enable/disable the dialog frame.
  *
  * @param enabled If true the dialog frame is enabled.
  */
 @Override
 public void setEnabled(boolean enabled) {
   glassPane.setEnabled(enabled);
 }