com.vaadin.flow.data.binder

Interface HasItemComponents<T>

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

Method Summary

Modifier and Type	Method and 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, addComponentAsFirst, addComponentAtIndex, remove, removeAll

Methods inherited from interface com.vaadin.flow.component.HasEnabled

isEnabled, setEnabled

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

getElement

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