com.vaadin.flow.data.binder

Interface HasItemsAndComponents<T>

Type Parameters:

T - the type of the displayed items

All Superinterfaces:

HasComponents, HasElement, HasEnabled, HasItems<T>, Serializable

All Known Implementing Classes:

CheckboxGroup, ListBox, RadioButtonGroup

public interface HasItemsAndComponents<T>
extends HasComponents, HasItems<T>

Mixin interface for components that display a collection of items and can have additional components between the items.

The items should be represented by components that implement HasItemsAndComponents.ItemComponent. Additionally any type of components can be added at any position with addComponents(Object, Component...) or prependComponents(Object, Component...).

Since:

1.0.

Author:

Vaadin Ltd

Nested Class Summary

Nested Classes

Modifier and Type	Interface and Description
static interface	HasItemsAndComponents.ItemComponent<T> Interface for components that are used inside an HasItemsAndComponents for representing a single item.

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, 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

Methods inherited from interface com.vaadin.flow.data.binder.HasItems

setItems, setItems, setItems

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