AbstractUnitOptionUI.java 文件源码

/**
 * {@inheritDoc}
 */
@Override
public void itemStateChanged(ItemEvent e) {
    // When the unit type changes, we have to reset the role choices
    JComboBox<String> box = this.roleUI.getComponent();
    DefaultComboBoxModel<String> model;
    boolean enable = false;
    UnitType type = (UnitType)this.typeUI.getComponent().getSelectedItem();
    if (type != null && type.hasAbility(Ability.CAN_BE_EQUIPPED)) {
        final Specification spec = type.getSpecification();
        final NationType nt = getOption().getNationType();
        int n = 0;
        model = new DefaultComboBoxModel<>();
        for (String ri : getOption().getRole().getChoices()) {
            Role role = spec.getRole(ri);
            if (role.isAvailableTo(type, nt)) {
                model.addElement(ri);
                n++;
            }
        }
        enable = isEditable() && n > 1;
    } else {
        model = new DefaultComboBoxModel<>(new String[] {
                Specification.DEFAULT_ROLE_ID });
    }
    box.setModel(model);
    box.setEnabled(enable);
}