本文整理了Java中com.vaadin.flow.dom.Element.getParent()方法的一些代码示例，展示了Element.getParent()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.getParent()方法的具体详情如下：
包路径：com.vaadin.flow.dom.Element
类名称：Element
方法名：getParent

Element.getParent介绍

[英]Gets the parent element.

The method may return null if the parent is not an element but a Node.
[中]获取父元素。
如果父对象不是元素而是节点，则该方法可能返回null。

代码示例

代码示例来源：origin: com.vaadin/flow-server

/**
 * Finds the first component by traversing upwards in the element hierarchy,
 * starting from the given element.
 *
 * @param element
 *            the element from which to begin the search
 * @return optional of the component, empty if no component is found
 */
public static Optional<Component> findParentComponent(Element element) {
  Element mappedElement = element;
  while (mappedElement != null
      && !mappedElement.getComponent().isPresent()) {
    mappedElement = mappedElement.getParent();
  }
  if (mappedElement == null) {
    return Optional.empty();
  }
  return Optional.of(getInnermostComponent(mappedElement));
}

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

/**
 * Remove the given components from this notification.
 *
 * @param components
 *            the components to remove
 */
@Override
public void remove(Component... components) {
  for (Component component : components) {
    Objects.requireNonNull(component,
        "Component to remove cannot be null");
    if (container.equals(component.getElement().getParent())) {
      container.removeChild(component.getElement());
    } else {
      throw new IllegalArgumentException("The given component ("
          + component + ") is not a child of this component");
    }
  }
}

代码示例来源：origin: com.vaadin/flow-server

/**
 * Removes the given child components from this component.
 *
 * @param components
 *            the components to remove
 * @throws IllegalArgumentException
 *             if any of the components is not a child of this component
 */
default void remove(Component... components) {
  Objects.requireNonNull(components, "Components should not be null");
  for (Component component : components) {
    Objects.requireNonNull(component,
        "Component to remove cannot be null");
    Element parent = component.getElement().getParent();
    if (parent == null) {
      LoggerFactory.getLogger(HasComponents.class).debug(
          "Remove of a component with no parent does nothing.");
      return;
    }
    if (getElement().equals(parent)) {
      getElement().removeChild(component.getElement());
    } else {
      throw new IllegalArgumentException("The given component ("
          + component + ") is not a child of this component");
    }
  }
}

代码示例来源：origin: com.vaadin/flow-server

/**
 * Gets the parent component of this component.
 * <p>
 * A component can only have one parent.
 *
 * @return an optional parent component, or an empty optional if the
 *         component is not attached to a parent
 */
public Optional<Component> getParent() {
  // If "this" is a component inside a Composite, iterate from the
  // Composite downwards
  Optional<Component> mappedComponent = getElement().getComponent();
  if (!mappedComponent.isPresent()) {
    throw new IllegalStateException(
        "You cannot use getParent() on a wrapped component. Use Component.wrapAndMap to include the component in the hierarchy");
  }
  if (isInsideComposite(mappedComponent.get())) {
    Component parent = ComponentUtil.getParentUsingComposite(
        (Composite<?>) mappedComponent.get(), this);
    return Optional.of(parent);
  }
  // Find the parent component based on the first parent element which is
  // mapped to a component
  return ComponentUtil.findParentComponent(getElement().getParent());
}

代码示例来源：origin: com.vaadin/flow-data

if (contentTemplate.getParent() != container) {
  container.appendChild(contentTemplate);

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

/**
 * Sets the grid
 *
 * @param grid the grid
 */
public void setGrid(Grid<E> grid) {
  Objects.requireNonNull(grid, "Grid cannot be null");
  if (this.grid != null && this.grid.getElement().getParent() == getElement()) {
    this.grid.getElement().removeFromParent();
  }
  this.grid = grid;
  grid.getElement().setAttribute(SLOT_KEY, GRID_SLOT_NAME);
  // It might already have a parent e.g when injected from a template
  if (grid.getElement().getParent() == null) {
    getElement().appendChild(grid.getElement());
  }
}

代码示例来源：origin: alejandro-du/crudui

@Override
public void hideForm() {
  formComponentLayout.removeAll();
  if (formCaptionLayout.getElement().getParent() != null) {
    secondComponent.getElement().removeChild(formCaptionLayout.getElement());
  }
}

代码示例来源：origin: com.vaadin/flow-server

if (!uiElement.equals(rootElement.getParent())) {
  if (oldRoot != null) {
    oldRoot.getElement().removeFromParent();

代码示例来源：origin: com.vaadin/vaadin-date-picker-flow

/**
 * Removes the given child components from this component.
 *
 * @param components
 *            The components to remove.
 * @throws IllegalArgumentException
 *             if any of the components is not a child of this component.
 */
protected void remove(Component... components) {
  for (Component component : components) {
    if (getElement().equals(component.getElement().getParent())) {
      component.getElement().removeAttribute("slot");
      getElement().removeChild(component.getElement());
    } else {
      throw new IllegalArgumentException("The given component ("
          + component + ") is not a child of this component");
    }
  }
}

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

/**
 * Removes the given child components from this component.
 * 
 * @param components
 *            The components to remove.
 * @throws IllegalArgumentException
 *             if any of the components is not a child of this component.
 */
protected void remove(Component... components) {
  for (Component component : components) {
    if (getElement().equals(component.getElement().getParent())) {
      component.getElement().removeAttribute("slot");
      getElement().removeChild(component.getElement());
    } else {
      throw new IllegalArgumentException("The given component ("
          + component + ") is not a child of this component");
    }
  }
}

代码示例来源：origin: com.vaadin/vaadin-text-field-flow

/**
 * Removes the given child components from this component.
 *
 * @param components
 *            The components to remove.
 * @throws IllegalArgumentException
 *             if any of the components is not a child of this component.
 */
protected void remove(Component... components) {
  for (Component component : components) {
    if (getElement().equals(component.getElement().getParent())) {
      component.getElement().removeAttribute("slot");
      getElement().removeChild(component.getElement());
    } else {
      throw new IllegalArgumentException("The given component ("
          + component + ") is not a child of this component");
    }
  }
}

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

/**
 * Removes the given child components from this component.
 *
 * @param components
 *            The components to remove.
 * @throws IllegalArgumentException
 *             if any of the components is not a child of this component.
 */
protected void remove(Component... components) {
  for (Component component : components) {
    if (getElement().equals(component.getElement().getParent())) {
      component.getElement().removeAttribute("slot");
      getElement().removeChild(component.getElement());
    } else {
      throw new IllegalArgumentException("The given component ("
          + component + ") is not a child of this component");
    }
  }
}

代码示例来源：origin: com.vaadin/vaadin-text-field-flow

/**
 * Removes the given child components from this component.
 *
 * @param components
 *            The components to remove.
 * @throws IllegalArgumentException
 *             if any of the components is not a child of this component.
 */
protected void remove(Component... components) {
  for (Component component : components) {
    if (getElement().equals(component.getElement().getParent())) {
      component.getElement().removeAttribute("slot");
      getElement().removeChild(component.getElement());
    } else {
      throw new IllegalArgumentException("The given component ("
          + component + ") is not a child of this component");
    }
  }
}

代码示例来源：origin: com.vaadin/vaadin-split-layout-flow

/**
 * Removes the given child components from this component.
 *
 * @param components
 *            The components to remove.
 * @throws IllegalArgumentException
 *             if any of the components is not a child of this component.
 */
protected void remove(Component... components) {
  for (Component component : components) {
    if (getElement().equals(component.getElement().getParent())) {
      component.getElement().removeAttribute("slot");
      getElement().removeChild(component.getElement());
    } else {
      throw new IllegalArgumentException("The given component ("
          + component + ") is not a child of this component");
    }
  }
}

代码示例来源：origin: com.vaadin/vaadin-form-layout-flow

/**
 * Removes the given child components from this component.
 *
 * @param components
 *            The components to remove.
 * @throws IllegalArgumentException
 *             if any of the components is not a child of this component.
 */
protected void remove(Component... components) {
  for (Component component : components) {
    if (getElement().equals(component.getElement().getParent())) {
      component.getElement().removeAttribute("slot");
      getElement().removeChild(component.getElement());
    } else {
      throw new IllegalArgumentException("The given component ("
          + component + ") is not a child of this component");
    }
  }
}

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

/**
 * Removes the given child components from this component.
 * 
 * @param components
 *            The components to remove.
 * @throws IllegalArgumentException
 *             if any of the components is not a child of this component.
 */
protected void remove(Component... components) {
  for (Component component : components) {
    if (getElement().equals(component.getElement().getParent())) {
      component.getElement().removeAttribute("slot");
      getElement().removeChild(component.getElement());
    } else {
      throw new IllegalArgumentException("The given component ("
          + component + ") is not a child of this component");
    }
  }
}

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

/**
 * Sets the editor.
 * When injecting a {@link Crud} with {@literal @}Id this method must be called
 * before the crud is put into use.
 *
 * @param editor the editor
 */
public void setEditor(CrudEditor<E> editor) {
  Objects.requireNonNull(editor, "Editor cannot be null");
  if (this.editor != null
      && this.editor.getView() != null
      && this.editor.getView().getElement().getParent() == getElement()) {
    this.editor.getView().getElement().removeFromParent();
  }
  this.editor = editor;
  // It might already have a parent e.g when injected from a template
  if (editor.getView() != null && editor.getView().getElement().getParent() == null) {
    editor.getView().getElement().setAttribute(SLOT_KEY, FORM_SLOT_NAME);
    getElement().appendChild(editor.getView().getElement());
  }
}

代码示例来源：origin: alejandro-du/crudui

@Override
public void showForm(CrudOperation operation, Component form) {
  String caption = formCaptions.get(operation);
  if (caption != null) {
    Div label = new Div(new Text(caption));
    label.getStyle().set("color", "var(--lumo-primary-text-color)");
    formCaptionLayout.removeAll();
    formCaptionLayout.add(label);
    secondComponent.getElement().insertChild(secondComponent.getComponentCount() - 1, formCaptionLayout.getElement());
  } else if (formCaptionLayout.getElement().getParent() != null) {
    secondComponent.getElement().removeChild(formCaptionLayout.getElement());
  }
  formComponentLayout.removeAll();
  formComponentLayout.add(form);
}