org.vaadin.miki.superfields.variant

Interface TypedFieldProvider<T,C extends com.vaadin.flow.component.Component & com.vaadin.flow.component.HasValue<?,T>>

Type Parameters:

T - Type of value.

C - Returned component.

Functional Interface:

This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.

@FunctionalInterface
public interface TypedFieldProvider<T,C extends com.vaadin.flow.component.Component & com.vaadin.flow.component.HasValue<?,T>>

Marker interface for objects that provide components based on a given value.

Since:

2022-04-11

Author:

miki

Method Summary

Modifier and Type	Method and Description
static <V,W extends com.vaadin.flow.component.Component & com.vaadin.flow.component.HasValue<?,V>> TypedFieldProvider<V,W>	of(Class<V> type, com.vaadin.flow.function.SerializableSupplier<W> supplier) Produces a TypedFieldProvider for a given type and component.
Optional<C>	provideComponent(Class<?> valueType) Produces a component for a given value.

Method Detail

provideComponent

Optional<C> provideComponent(Class<?> valueType)

Produces a component for a given value. The returned component should be able to accept that object of the given type when its setValue() method is called.

Parameters:

valueType - Type of the value. Never null.

Returns:

Perhaps a Component. The result will be empty when this provider cannot produce a result for a given value.

of

static <V,W extends com.vaadin.flow.component.Component & com.vaadin.flow.component.HasValue<?,V>> TypedFieldProvider<V,W> of(Class<V> type,
                                                                                                                              com.vaadin.flow.function.SerializableSupplier<W> supplier)

Produces a TypedFieldProvider for a given type and component.

Type Parameters:

V - Value type.

W - Component type.

Parameters:

type - Type to accept.

supplier - Component to produce.

Returns:

If asked type is a subtype of the given type returns the component, otherwise returns an empty optional.