Examples with Subscription io.jmix.core.common.event.Subscription used on opensource projects

Example 26 with Subscription

use of io.jmix.core.common.event.Subscription in project jmix by jmix-framework.

the class SearchFieldDsTest method testUnsubscribeSubscribeComponentListener.

@Test
public void testUnsubscribeSubscribeComponentListener() {
    SearchField searchField = uiComponents.create(SearchField.class);
    CollectionDatasource<Group, UUID> groupsDs = getTestCollectionDatasource();
    searchField.setOptionsDatasource(groupsDs);
    Datasource<User> userDs = createTestDatasource(User.class);
    Group group = groupsDs.getItems().iterator().next();
    User user = userDs.getItem();
    user.setGroup(group);
    searchField.setDatasource(userDs, "group");
    // unbind
    searchField.setDatasource(null, null);
    // setup
    boolean[] valueWasChanged = { false };
    Consumer<HasValue.ValueChangeEvent> listener = e -> valueWasChanged[0] = true;
    // datasource before listener
    searchField.setDatasource(userDs, "group");
    Subscription subscription = searchField.addValueChangeListener(listener);
    user.setGroup(metadata.create(Group.class));
    assertTrue(valueWasChanged[0]);
    // reset state
    valueWasChanged[0] = false;
    searchField.setDatasource(null, null);
    subscription.remove();
    searchField.setValue(null);
    // listener before datasource
    searchField.addValueChangeListener(listener);
    searchField.setDatasource(userDs, "group");
    assertTrue(valueWasChanged[0]);
}