org.vaadin.miki.markers

Interface HasNullValueOptionallyAllowed<E extends com.vaadin.flow.component.HasValue.ValueChangeEvent<V>,V>

Type Parameters:

E - Event type.

V - Value type.

All Superinterfaces:

com.vaadin.flow.component.HasValue<E,V>, Serializable

All Known Subinterfaces:

WithNullValueOptionallyAllowedMixin<SELF,E,V>

All Known Implementing Classes:

AbstractSuperFloatingPointField, AbstractSuperNumberField, SuperBigDecimalField, SuperDoubleField, SuperIntegerField, SuperLongField

public interface HasNullValueOptionallyAllowed<E extends com.vaadin.flow.component.HasValue.ValueChangeEvent<V>,V>
extends com.vaadin.flow.component.HasValue<E,V>

Marker interface for descendants of HasValue that may optionally allow null as value. By default, objects should not allow nulls. In general, when this feature is turned on and HasValue.setValue(Object) is called with null, the object should never throw a NullPointerException.

Since:

2021-09-13

Author:

miki

Nested Class Summary

Nested classes/interfaces inherited from interface com.vaadin.flow.component.HasValue

com.vaadin.flow.component.HasValue.ValueChangeEvent<V>, com.vaadin.flow.component.HasValue.ValueChangeListener<E extends com.vaadin.flow.component.HasValue.ValueChangeEvent<?>>

Method Summary

Modifier and Type	Method and Description
boolean	isNullValueAllowed() Checks whether null is allowed as a value of the component.
void	setNullValueAllowed(boolean allowingNullValue) Sets allowance of null as this component's value.

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

addValueChangeListener, clear, getEmptyValue, getOptionalValue, getValue, isEmpty, isReadOnly, isRequiredIndicatorVisible, setReadOnly, setRequiredIndicatorVisible, setValue

Method Detail

isNullValueAllowed

boolean isNullValueAllowed()

Checks whether null is allowed as a value of the component.

Returns:

Whether null is allowed as a value. Should default to false.

setNullValueAllowed

void setNullValueAllowed(boolean allowingNullValue)

Sets allowance of null as this component's value.

Parameters:

allowingNullValue - Whether to allow null as a value.