volatile bool enabled = true;
transient JPanel buttons;

visual dm_visualizeWithEnabled(super);

JComponent visualizeWithoutEnabled() { ret super.visualize(); }
  
JComponent dm_visualizeWithEnabled(JComponent main) {
  ret centerAndSouthWithMargins(main,
    buttons = jrightalignedline(dm_fieldCheckBox('enabled)));
}
  
void setEnabled(bool b) { setField(enabled := b); }