com.vaadin.flow.dom.Element.getParent()方法的使用及代码示例

x33g5p2x  于2022-01-19 转载在 其他  
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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

  1. /**
  2.  * Finds the first component by traversing upwards in the element hierarchy,
  3.  * starting from the given element.
  4.  *
  5.  * @param element
  6.  *            the element from which to begin the search
  7.  * @return optional of the component, empty if no component is found
  8.  */
  9. public static Optional<Component> findParentComponent(Element element) {
  10.   Element mappedElement = element;
  11.   while (mappedElement != null
  12.       && !mappedElement.getComponent().isPresent()) {
  13.     mappedElement = mappedElement.getParent();
  14.   }
  15.   if (mappedElement == null) {
  16.     return Optional.empty();
  17.   }
  18.   return Optional.of(getInnermostComponent(mappedElement));
  19. }

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

  1. /**
  2.  * Remove the given components from this notification.
  3.  *
  4.  * @param components
  5.  *            the components to remove
  6.  */
  7. @Override
  8. public void remove(Component... components) {
  9.   for (Component component : components) {
  10.     Objects.requireNonNull(component,
  11.         "Component to remove cannot be null");
  12.     if (container.equals(component.getElement().getParent())) {
  13.       container.removeChild(component.getElement());
  14.     } else {
  15.       throw new IllegalArgumentException("The given component ("
  16.           + component + ") is not a child of this component");
  17.     }
  18.   }
  19. }

代码示例来源：origin: com.vaadin/flow-server

  1. /**
  2.  * Removes the given child components from this component.
  3.  *
  4.  * @param components
  5.  *            the components to remove
  6.  * @throws IllegalArgumentException
  7.  *             if any of the components is not a child of this component
  8.  */
  9. default void remove(Component... components) {
  10.   Objects.requireNonNull(components, "Components should not be null");
  11.   for (Component component : components) {
  12.     Objects.requireNonNull(component,
  13.         "Component to remove cannot be null");
  14.     Element parent = component.getElement().getParent();
  15.     if (parent == null) {
  16.       LoggerFactory.getLogger(HasComponents.class).debug(
  17.           "Remove of a component with no parent does nothing.");
  18.       return;
  19.     }
  20.     if (getElement().equals(parent)) {
  21.       getElement().removeChild(component.getElement());
  22.     } else {
  23.       throw new IllegalArgumentException("The given component ("
  24.           + component + ") is not a child of this component");
  25.     }
  26.   }
  27. }

代码示例来源：origin: com.vaadin/flow-server

  1. /**
  2.  * Gets the parent component of this component.
  3.  * <p>
  4.  * A component can only have one parent.
  5.  *
  6.  * @return an optional parent component, or an empty optional if the
  7.  *         component is not attached to a parent
  8.  */
  9. public Optional<Component> getParent() {
  10.   // If "this" is a component inside a Composite, iterate from the
  11.   // Composite downwards
  12.   Optional<Component> mappedComponent = getElement().getComponent();
  13.   if (!mappedComponent.isPresent()) {
  14.     throw new IllegalStateException(
  15.         "You cannot use getParent() on a wrapped component. Use Component.wrapAndMap to include the component in the hierarchy");
  16.   }
  17.   if (isInsideComposite(mappedComponent.get())) {
  18.     Component parent = ComponentUtil.getParentUsingComposite(
  19.         (Composite<?>) mappedComponent.get(), this);
  20.     return Optional.of(parent);
  21.   }
  22.   // Find the parent component based on the first parent element which is
  23.   // mapped to a component
  24.   return ComponentUtil.findParentComponent(getElement().getParent());
  25. }

代码示例来源：origin: com.vaadin/flow-data

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

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

  1. /**
  2.  * Sets the grid
  3.  *
  4.  * @param grid the grid
  5.  */
  6. public void setGrid(Grid<E> grid) {
  7.   Objects.requireNonNull(grid, "Grid cannot be null");
  8.   if (this.grid != null && this.grid.getElement().getParent() == getElement()) {
  9.     this.grid.getElement().removeFromParent();
  10.   }
  11.   this.grid = grid;
  12.   grid.getElement().setAttribute(SLOT_KEY, GRID_SLOT_NAME);
  13.   // It might already have a parent e.g when injected from a template
  14.   if (grid.getElement().getParent() == null) {
  15.     getElement().appendChild(grid.getElement());
  16.   }
  17. }

代码示例来源：origin: alejandro-du/crudui

  1. @Override
  2. public void hideForm() {
  3.   formComponentLayout.removeAll();
  4.   if (formCaptionLayout.getElement().getParent() != null) {
  5.     secondComponent.getElement().removeChild(formCaptionLayout.getElement());
  6.   }
  7. }

代码示例来源：origin: com.vaadin/flow-server

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

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

  1. /**
  2.  * Removes the given child components from this component.
  3.  *
  4.  * @param components
  5.  *            The components to remove.
  6.  * @throws IllegalArgumentException
  7.  *             if any of the components is not a child of this component.
  8.  */
  9. protected void remove(Component... components) {
  10.   for (Component component : components) {
  11.     if (getElement().equals(component.getElement().getParent())) {
  12.       component.getElement().removeAttribute("slot");
  13.       getElement().removeChild(component.getElement());
  14.     } else {
  15.       throw new IllegalArgumentException("The given component ("
  16.           + component + ") is not a child of this component");
  17.     }
  18.   }
  19. }

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

  1. /**
  2.  * Removes the given child components from this component.
  3.  * 
  4.  * @param components
  5.  *            The components to remove.
  6.  * @throws IllegalArgumentException
  7.  *             if any of the components is not a child of this component.
  8.  */
  9. protected void remove(Component... components) {
  10.   for (Component component : components) {
  11.     if (getElement().equals(component.getElement().getParent())) {
  12.       component.getElement().removeAttribute("slot");
  13.       getElement().removeChild(component.getElement());
  14.     } else {
  15.       throw new IllegalArgumentException("The given component ("
  16.           + component + ") is not a child of this component");
  17.     }
  18.   }
  19. }

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

  1. /**
  2.  * Removes the given child components from this component.
  3.  *
  4.  * @param components
  5.  *            The components to remove.
  6.  * @throws IllegalArgumentException
  7.  *             if any of the components is not a child of this component.
  8.  */
  9. protected void remove(Component... components) {
  10.   for (Component component : components) {
  11.     if (getElement().equals(component.getElement().getParent())) {
  12.       component.getElement().removeAttribute("slot");
  13.       getElement().removeChild(component.getElement());
  14.     } else {
  15.       throw new IllegalArgumentException("The given component ("
  16.           + component + ") is not a child of this component");
  17.     }
  18.   }
  19. }

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

  1. /**
  2.  * Removes the given child components from this component.
  3.  *
  4.  * @param components
  5.  *            The components to remove.
  6.  * @throws IllegalArgumentException
  7.  *             if any of the components is not a child of this component.
  8.  */
  9. protected void remove(Component... components) {
  10.   for (Component component : components) {
  11.     if (getElement().equals(component.getElement().getParent())) {
  12.       component.getElement().removeAttribute("slot");
  13.       getElement().removeChild(component.getElement());
  14.     } else {
  15.       throw new IllegalArgumentException("The given component ("
  16.           + component + ") is not a child of this component");
  17.     }
  18.   }
  19. }

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

  1. /**
  2.  * Removes the given child components from this component.
  3.  *
  4.  * @param components
  5.  *            The components to remove.
  6.  * @throws IllegalArgumentException
  7.  *             if any of the components is not a child of this component.
  8.  */
  9. protected void remove(Component... components) {
  10.   for (Component component : components) {
  11.     if (getElement().equals(component.getElement().getParent())) {
  12.       component.getElement().removeAttribute("slot");
  13.       getElement().removeChild(component.getElement());
  14.     } else {
  15.       throw new IllegalArgumentException("The given component ("
  16.           + component + ") is not a child of this component");
  17.     }
  18.   }
  19. }

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

  1. /**
  2.  * Removes the given child components from this component.
  3.  *
  4.  * @param components
  5.  *            The components to remove.
  6.  * @throws IllegalArgumentException
  7.  *             if any of the components is not a child of this component.
  8.  */
  9. protected void remove(Component... components) {
  10.   for (Component component : components) {
  11.     if (getElement().equals(component.getElement().getParent())) {
  12.       component.getElement().removeAttribute("slot");
  13.       getElement().removeChild(component.getElement());
  14.     } else {
  15.       throw new IllegalArgumentException("The given component ("
  16.           + component + ") is not a child of this component");
  17.     }
  18.   }
  19. }

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

  1. /**
  2.  * Removes the given child components from this component.
  3.  *
  4.  * @param components
  5.  *            The components to remove.
  6.  * @throws IllegalArgumentException
  7.  *             if any of the components is not a child of this component.
  8.  */
  9. protected void remove(Component... components) {
  10.   for (Component component : components) {
  11.     if (getElement().equals(component.getElement().getParent())) {
  12.       component.getElement().removeAttribute("slot");
  13.       getElement().removeChild(component.getElement());
  14.     } else {
  15.       throw new IllegalArgumentException("The given component ("
  16.           + component + ") is not a child of this component");
  17.     }
  18.   }
  19. }

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

  1. /**
  2.  * Removes the given child components from this component.
  3.  * 
  4.  * @param components
  5.  *            The components to remove.
  6.  * @throws IllegalArgumentException
  7.  *             if any of the components is not a child of this component.
  8.  */
  9. protected void remove(Component... components) {
  10.   for (Component component : components) {
  11.     if (getElement().equals(component.getElement().getParent())) {
  12.       component.getElement().removeAttribute("slot");
  13.       getElement().removeChild(component.getElement());
  14.     } else {
  15.       throw new IllegalArgumentException("The given component ("
  16.           + component + ") is not a child of this component");
  17.     }
  18.   }
  19. }

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

  1. /**
  2.  * Sets the editor.
  3.  * When injecting a {@link Crud} with {@literal @}Id this method must be called
  4.  * before the crud is put into use.
  5.  *
  6.  * @param editor the editor
  7.  */
  8. public void setEditor(CrudEditor<E> editor) {
  9.   Objects.requireNonNull(editor, "Editor cannot be null");
  10.   if (this.editor != null
  11.       && this.editor.getView() != null
  12.       && this.editor.getView().getElement().getParent() == getElement()) {
  13.     this.editor.getView().getElement().removeFromParent();
  14.   }
  15.   this.editor = editor;
  16.   // It might already have a parent e.g when injected from a template
  17.   if (editor.getView() != null && editor.getView().getElement().getParent() == null) {
  18.     editor.getView().getElement().setAttribute(SLOT_KEY, FORM_SLOT_NAME);
  19.     getElement().appendChild(editor.getView().getElement());
  20.   }
  21. }

代码示例来源：origin: alejandro-du/crudui

  1. @Override
  2. public void showForm(CrudOperation operation, Component form) {
  3.   String caption = formCaptions.get(operation);
  4.   if (caption != null) {
  5.     Div label = new Div(new Text(caption));
  6.     label.getStyle().set("color", "var(--lumo-primary-text-color)");
  7.     formCaptionLayout.removeAll();
  8.     formCaptionLayout.add(label);
  9.     secondComponent.getElement().insertChild(secondComponent.getComponentCount() - 1, formCaptionLayout.getElement());
  10.   } else if (formCaptionLayout.getElement().getParent() != null) {
  11.     secondComponent.getElement().removeChild(formCaptionLayout.getElement());
  12.   }
  13.   formComponentLayout.removeAll();
  14.   formComponentLayout.add(form);
  15. }

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