Examples with NodeList com.vaadin.client.flow.nodefeature.NodeList used on opensource projects

Example 16 with NodeList

use of com.vaadin.client.flow.nodefeature.NodeList in project flow by vaadin.

the class ExecuteJavaScriptElementUtils method attachExistingElement.

/**
 * Calculate the data required for server side callback to attach existing
 * element and send it to the server.
 *
 * @param parent
 *            the parent node whose child is requested to attach
 * @param previousSibling
 *            previous sibling element
 * @param tagName
 *            the tag name of the element requested to attach
 * @param id
 *            the identifier of the server side node which is requested to
 *            be a counterpart of the client side element
 */
public static void attachExistingElement(StateNode parent, Element previousSibling, String tagName, int id) {
    Element existingElement = null;
    JsArray<Node> childNodes = DomApi.wrap(parent.getDomNode()).getChildNodes();
    JsMap<Node, Integer> indices = new JsMap<>();
    boolean afterSibling = previousSibling == null;
    int elementIndex = -1;
    for (int i = 0; i < childNodes.length(); i++) {
        Node node = childNodes.get(i);
        indices.set(node, i);
        if (node.equals(previousSibling)) {
            afterSibling = true;
        }
        if (afterSibling && hasTag(node, tagName)) {
            existingElement = (Element) node;
            elementIndex = i;
            break;
        }
    }
    if (existingElement == null) {
        // report an error
        parent.getTree().sendExistingElementAttachToServer(parent, id, -1, tagName, -1);
    } else {
        NodeList list = parent.getList(NodeFeatures.ELEMENT_CHILDREN);
        Integer existingId = null;
        int childIndex = 0;
        for (int i = 0; i < list.length(); i++) {
            StateNode stateNode = (StateNode) list.get(i);
            Node domNode = stateNode.getDomNode();
            Integer index = indices.get(domNode);
            if (index != null && index < elementIndex) {
                childIndex++;
            }
            if (domNode.equals(existingElement)) {
                existingId = stateNode.getId();
                break;
            }
        }
        existingId = getExistingIdOrUpdate(parent, id, existingElement, existingId);
        parent.getTree().sendExistingElementAttachToServer(parent, id, existingId, existingElement.getTagName(), childIndex);
    }
}

Example 17 with NodeList

use of com.vaadin.client.flow.nodefeature.NodeList in project flow by vaadin.

the class PolymerUtils method registerChangeHandlers.

private static void registerChangeHandlers(StateNode node, NodeFeature feature, JsonValue value) {
    JsArray<EventRemover> registrations = JsCollections.array();
    if (node.hasFeature(NodeFeatures.ELEMENT_PROPERTIES)) {
        assert feature instanceof NodeMap : "Received an inconsistent NodeFeature for a node that has a ELEMENT_PROPERTIES feature. It should be NodeMap, but it is: " + feature;
        NodeMap map = (NodeMap) feature;
        registerPropertyChangeHandlers(value, registrations, map);
        registerPropertyAddHandler(value, registrations, map);
    } else if (node.hasFeature(NodeFeatures.TEMPLATE_MODELLIST)) {
        assert feature instanceof NodeList : "Received an inconsistent NodeFeature for a node that has a TEMPLATE_MODELLIST feature. It should be NodeList, but it is: " + feature;
        NodeList list = (NodeList) feature;
        registrations.push(list.addSpliceListener(event -> handleListChange(event, value)));
    }
    assert !registrations.isEmpty() : "Node should have ELEMENT_PROPERTIES or TEMPLATE_MODELLIST feature";
    registrations.push(node.addUnregisterListener(event -> registrations.forEach(EventRemover::remove)));
}

Example 18 with NodeList

use of com.vaadin.client.flow.nodefeature.NodeList in project flow by vaadin.

the class GwtBasicElementBinderTest method addVirtualChild.

private void addVirtualChild(StateNode shadowRootNode, StateNode childNode, String type, JsonValue payload) {
    NodeList virtualChildren = shadowRootNode.getList(NodeFeatures.VIRTUAL_CHILDREN);
    JsonObject object = Json.createObject();
    childNode.getMap(NodeFeatures.ELEMENT_DATA).getProperty(NodeProperties.PAYLOAD).setValue(object);
    object.put(NodeProperties.TYPE, type);
    object.put(NodeProperties.PAYLOAD, payload);
    virtualChildren.add(virtualChildren.length(), childNode);
}

Example 19 with NodeList

use of com.vaadin.client.flow.nodefeature.NodeList in project flow by vaadin.

the class TreeChangeProcessorTest method testPrimitiveSpliceChange.

@Test
public void testPrimitiveSpliceChange() {
    JsonObject change = spliceChange(rootId, ns, 0, 0, Json.create("foo"), Json.create("bar"));
    StateNode node = TreeChangeProcessor.processChange(tree, change);
    NodeList list = tree.getRootNode().getList(ns);
    Assert.assertEquals(2, list.length());
    Assert.assertEquals("foo", list.get(0));
    Assert.assertEquals("bar", list.get(1));
    Assert.assertEquals(tree.getRootNode(), node);
    change = spliceChange(rootId, ns, 1, 0, Json.create("baz"));
    node = TreeChangeProcessor.processChange(tree, change);
    Assert.assertEquals(3, list.length());
    Assert.assertEquals("foo", list.get(0));
    Assert.assertEquals("baz", list.get(1));
    Assert.assertEquals("bar", list.get(2));
    change = spliceChange(rootId, ns, 1, 1);
    Assert.assertEquals(tree.getRootNode(), node);
    node = TreeChangeProcessor.processChange(tree, change);
    Assert.assertEquals(2, list.length());
    Assert.assertEquals("foo", list.get(0));
    Assert.assertEquals("bar", list.get(1));
    Assert.assertEquals(tree.getRootNode(), node);
}

Example 20 with NodeList

use of com.vaadin.client.flow.nodefeature.NodeList in project flow by vaadin.

the class TreeChangeProcessorTest method testNodeSpliceChange.

@Test
public void testNodeSpliceChange() {
    StateNode child = new StateNode(2, tree);
    tree.registerNode(child);
    JsonObject change = nodeSpliceChange(rootId, ns, 0, 0, child.getId());
    StateNode node = TreeChangeProcessor.processChange(tree, change);
    NodeList list = tree.getRootNode().getList(ns);
    Assert.assertEquals(1, list.length());
    Assert.assertSame(child, list.get(0));
    Assert.assertEquals(tree.getRootNode(), node);
}