HasItemComponents (Vaadin Platform (vaadin-platform-javadoc) 23.3.13 API)

Type Parameters:

T - the type of the displayed items

All Superinterfaces:

HasComponents, HasElement, HasEnabled, Serializable

All Known Subinterfaces:

HasItemsAndComponents<T>

All Known Implementing Classes:

CheckboxGroup, ListBox, ListBoxBase, MultiSelectListBox, RadioButtonGroup, Select
```
public interface HasItemComponents<T>
extends HasComponents
```
Represents a component that can have additional components between the items.
The items should be represented by components that implement HasItemComponents.ItemComponent. Additionally any type of components can be added at any position with addComponents(Object, Component...) or prependComponents(Object, Component...).

Since:

Author:

Vaadin Ltd

Nested Class Summary

Nested Classes
Modifier and Type Interface Description

static interface HasItemComponents.ItemComponent<T>
Represents a single item component that is used inside a HasItemComponents.

Method Summary

All Methods Instance Methods Default Methods
Modifier and Type	Method	Description
`default void`	`addComponents(T afterItem, Component... components)`	Adds the components after the given item.
`default int`	`getItemPosition(T item)`	Gets the index of the child element that represents the given item.
`default void`	`prependComponents(T beforeItem, Component... components)`	Adds the components before the given item.

Methods inherited from interface com.vaadin.flow.component.HasComponents
add, add, add, addComponentAsFirst, addComponentAtIndex, remove, remove, removeAll

Methods inherited from interface com.vaadin.flow.component.HasElement
getElement

Methods inherited from interface com.vaadin.flow.component.HasEnabled
isEnabled, setEnabled

- Method Detail
  - addComponents
```
default void addComponents(T afterItem,
                           Component... components)
```
    Adds the components after the given item.
    
    Parameters:
    
    afterItem - item to add components after
    
    components - components to add after item
    
    Throws:
    
    IllegalArgumentException - if this component doesn't contain the item
  - prependComponents
```
default void prependComponents(T beforeItem,
                               Component... components)
```
    Adds the components before the given item.
    
    Parameters:
    
    beforeItem - item to add components in front of
    
    components - components to add before item
    
    Throws:
    
    IllegalArgumentException - if this component doesn't contain the item
  - getItemPosition
```
default int getItemPosition(T item)
```
    Gets the index of the child element that represents the given item.
    
    Parameters:
    
    item - the item to look for
    
    Returns:
    
    the index of the child element that represents the item, or -1 if the item is not found