// userChangeListener is called only when user changes selected item
// (not when var is changed)
static <B, A extends JComboBox<B>> A bindComboBoxToVar_withUserChangeListener(A cb, IVarWithNotify<B> var, Runnable userChangeListener) {
  new BoolVar inVarChange;
  if (var != null) {
    bindListenerToComponent(cb, var, -> {
      temp tempSetBoolVar(inVarChange, true);
      selectItem(cb, var!);
    });
    onChange(cb, (Runnable) () -> {
      var.set(getSelected(cb));
      if (!inVarChange!)
        pcallF(userChangeListener);
    });
  }
  ret cb;
}

Began life as a copy of #1034489