How to use

evalEnum

method

in

com.palantir.ptoss.util.Reflections

/**
 * Resolves a string reference, as specified in the <code>on</code> parameter of
 * a {@link Bound} annotation to an Enum object in this runtime.
 * @param on <code>on</code> parameter from a {@link Bound} annotation.
 * @param model
 * @return the resolved object
 * @throws IllegalArgumentException if the referenced object can't be found.
 */
public static ModelUpdate findOnObject(final String on, final BindableModel model) {
  ModelUpdate onObject = null;
  if (!isNullOrBlank(on)) {
    final List<Class<?>> updateClasses = findModelUpdateClass(model);
    for (Class<?> updateClass : updateClasses) {
      try {
        onObject = (ModelUpdate)Reflections.evalEnum(updateClass, on);
        return onObject;
      } catch (IllegalArgumentException e) {
        // swallow this if we don't find the enum on one of the
        // classes, continue to next class.
      }
    }
    throw new IllegalArgumentException("could not find \"on\" parameter " + on);
  }
  return onObject;
}

  public void testEnumTypes() throws Exception {
    Object o = Reflections.evalEnum(TestEnum.class, "FOO");
    assertTrue("Object is not a ModelUpdate instance",ModelUpdate.class.isAssignableFrom(o.getClass()));

  }
}

  public static Binding bindJToggleButtonToEnum(final String value, final Class<?> enumType,
      final Mutator mutator, final AbstractButton button) {
    final Object enumValue = Reflections.evalEnum(enumType, value);
    button.addActionListener(new ActionListener() {
      public void actionPerformed(ActionEvent e) {
        try {
          mutator.set(enumValue);
        } catch (Exception ex) {
          Wiring.logger.error("exception in JToggleButton binding", ex); //$NON-NLS-1$
        }
      }
    });

    Binding binding = new Binding() {
      public <T extends Enum<?> & ModelUpdate> void update(T... changed) {
        try {
          button.setSelected(mutator.get() == enumValue);
        } catch (Exception ex) {
          Wiring.logger.error("exception in JToggleButton binding", ex); //$NON-NLS-1$
        }
      }
    };
    mutator.getModel().bind(binding);
    return binding;
  }
}