Examples with StateTree com.vaadin.flow.internal.StateTree used on opensource projects

Example 11 with StateTree

use of com.vaadin.flow.internal.StateTree in project flow by vaadin.

the class JsonCodecTest method encodeWithTypeInfo_attachedElement.

@Test
public void encodeWithTypeInfo_attachedElement() {
    Element element = ElementFactory.createDiv();
    StateTree tree = new StateTree(new UI(), ElementChildrenList.class);
    tree.getRootNode().getFeature(ElementChildrenList.class).add(0, element.getNode());
    JsonValue json = JsonCodec.encodeWithTypeInfo(element);
    assertJsonEquals(JsonUtils.createArray(Json.create(JsonCodec.NODE_TYPE), Json.create(element.getNode().getId())), json);
}

Example 12 with StateTree

use of com.vaadin.flow.internal.StateTree in project flow by vaadin.

the class NodeMapTest method put_sameValue_hasNoEffect.

@Test
public void put_sameValue_hasNoEffect() {
    StateTree tree = new StateTree(new UI(), ElementChildrenList.class);
    StateNode child = new StateNode();
    AtomicBoolean listenerIsCalled = new AtomicBoolean();
    child.addAttachListener(() -> {
        Assert.assertFalse(listenerIsCalled.get());
        listenerIsCalled.set(true);
    });
    nodeMap.put("foo", child);
    tree.getRootNode().getFeature(ElementChildrenList.class).add(child.getParent());
    Assert.assertTrue(listenerIsCalled.get());
    // The attach listener is not called one more time
    nodeMap.put("foo", child);
}

Example 13 with StateTree

use of com.vaadin.flow.internal.StateTree in project flow by vaadin.

the class RouterLink method getRouter.

private RouterInterface getRouter() {
    Optional<RouterInterface> router = Optional.empty();
    if (getElement().getNode().isAttached()) {
        StateTree tree = (StateTree) getElement().getNode().getOwner();
        router = tree.getUI().getRouterInterface();
        if (!router.isPresent()) {
            throw new IllegalArgumentException("RouterLink cannot be used if Router is not used");
        }
    }
    if (!router.isPresent()) {
        router = Optional.ofNullable(VaadinService.getCurrent()).map(VaadinService::getRouter);
    }
    if (!router.isPresent()) {
        throw new IllegalStateException("Implicit router instance is not available. " + "Use overloaded method with explicit router parameter.");
    }
    return router.get();
}