@Before
public void setUp() {
grid = new Grid<>();
grid.setItems(PERSON_A, PERSON_B, PERSON_C);
selectionModel = (SingleSelectionModelImpl<Person>) grid.getSelectionModel();
selectionChanges = new ArrayList<>();
selectionModel.addSingleSelectionListener(e -> selectionChanges.add(e.getValue()));
}
@SuppressWarnings({"serial"})
@Test
public void addValueChangeListener() {
AtomicReference<SingleSelectionListener<String>> selectionListener = new AtomicReference<>();
Registration registration = Mockito.mock(Registration.class);
Grid<String> grid = new Grid<>();
grid.setItems("foo", "bar");
String value = "foo";
SingleSelectionModelImpl<String> select =
new SingleSelectionModelImpl<String>() {
@Override
public Registration addSingleSelectionListener(SingleSelectionListener<String> listener) {
selectionListener.set(listener);
return registration;
}
@Override
public Optional<String> getSelectedItem() {
return Optional.of(value);
}
};
AtomicReference<ValueChangeEvent<?>> event = new AtomicReference<>();
Registration actualRegistration =
select.addSingleSelectionListener(
evt -> {
Assert.assertNull(event.get());
event.set(evt);
});
Assert.assertSame(registration, actualRegistration);
selectionListener
.get()
.selectionChange(new SingleSelectionEvent<>(grid, select.asSingleSelect(), true));
Assert.assertEquals(grid, event.get().getComponent());
Assert.assertEquals(value, event.get().getValue());
Assert.assertTrue(event.get().isUserOriginated());
}