本文整理了Java中com.vaadin.flow.dom.Element.getParentNode()方法的一些代码示例，展示了Element.getParentNode()的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。Element.getParentNode()方法的具体详情如下：
包路径：com.vaadin.flow.dom.Element
类名称：Element
方法名：getParentNode

Element.getParentNode介绍

暂无

代码示例

代码示例来源：origin: com.vaadin/flow-server

/**
 * Gets the parent element.
 * <p>
 * The method may return {@code null} if the parent is not an element but a
 * {@link Node}.
 *
 * @see #getParentNode()
 *
 * @return the parent element or null if this element does not have a parent
 *         or the parent is not an element
 */
public Element getParent() {
  Node<?> parent = getParentNode();
  if (parent instanceof Element) {
    return (Element) parent;
  }
  return null;
}

代码示例来源：origin: com.vaadin/flow-server

/**
 * Ensures that the {@code child} has the correct parent.
 * <p>
 * Default implementation doesn't do anything. Subclasses may override the
 * method to implement their own behavior.
 *
 * @param child
 *            the element to check for its parent
 * @param internalCheck
 *            whether to use assertions or throw an exception on failure
 */
protected void ensureChildHasParent(Element child, boolean internalCheck) {
  if (!Objects.equals(this, child.getParentNode())) {
    if (internalCheck) {
      assert false : "Child should have this element as a parent";
    } else {
      throw new IllegalArgumentException(
          "Child should have this element as a parent");
    }
  }
}

代码示例来源：origin: com.vaadin/flow-server

/**
 * Removes this element from its parent.
 * <p>
 * Has no effect if the element does not have a parent
 *
 * @return this element
 */
public Element removeFromParent() {
  Node<?> parent = getParentNode();
  if (parent != null) {
    parent.removeChild(this);
  }
  return this;
}

代码示例来源：origin: com.vaadin/flow-server

/**
 * Gets the UI this component is attached to.
 *
 * @return an optional UI component, or an empty optional if this component
 *         is not attached to a UI
 */
public Optional<UI> getUI() {
  Optional<Component> parent = getParent();
  if (parent.isPresent()) {
    return parent.flatMap(Component::getUI);
  } else if (getElement().getParentNode() instanceof ShadowRoot) {
    parent = ComponentUtil.findParentComponent(
        ((ShadowRoot) getElement().getParentNode()).getHost());
    return parent.flatMap(Component::getUI);
  }
  return Optional.empty();
}

代码示例来源：origin: com.vaadin/flow-server

/**
 * Returns the index of the specified {@code child} in the children list, or
 * -1 if this list does not contain the {@code child}.
 *
 * @param child
 *            the child element
 * @return index of the {@code child} or -1 if it's not a child
 */
public int indexOfChild(Element child) {
  if (child == null) {
    throw new IllegalArgumentException(
        "Child parameter cannot be null");
  }
  if (!equals(child.getParentNode())) {
    return -1;
  }
  for (int i = 0; i < getChildCount(); i++) {
    Element element = getChild(i);
    if (element.equals(child)) {
      return i;
    }
  }
  return -1;
}

代码示例来源：origin: com.vaadin/flow-server

"Element to insert must not be null");
Node<?> parentNode = child.getParentNode();
if (parentNode != null) {
  throw new IllegalArgumentException(

代码示例来源：origin: com.vaadin/flow-server

"Element to insert must not be null");
if (equals(child.getParentNode())) {
  int childIndex = indexOfChild(child);
  if (childIndex == insertIndex) {

代码示例来源：origin: com.vaadin/incubator-tooltip-flow

/**
 * Assigns the tooltip to a specific component.
 * <p>
 * The tooltip is removed from the parent after the component that the tooltip is
 * attached is detached.
 *
 * @param component the tooltip is attached to this component
 * @param appended <code>true</code> the tooltip is automatically appended
 *                 to the component's father.<code>false</code>,
 *                 it is not appended. It should be added to a layout manually.
 */
public void attachToComponent(Component component, boolean appended) {
  Objects.requireNonNull(component);
  getElement().getNode().runWhenAttached(ui -> {
    ui.getPage().executeJavaScript("$0.targetElement = $1;",
        getElement(), component.getElement()
    );
  });
  if ( appended ){
    component.getElement().getNode().runWhenAttached(ui -> {
      component.getElement().getParentNode().appendChild(getElement());
    });
  }
  if ( detachedRegistration != null ){
    detachedRegistration.remove();
  }
  detachedRegistration = component.addDetachListener(event -> {
    this.getElement().removeFromParent();
  });
}