Package com.vaadin.flow.data.binder

Class ReadOnlyHasValue<V>

java.lang.Object

com.vaadin.flow.data.binder.ReadOnlyHasValue<V>

Type Parameters:

V - the value type

All Implemented Interfaces:

HasValue<HasValue.ValueChangeEvent<V>,V>, Serializable

public class ReadOnlyHasValue<V>
extends Object
implements HasValue<HasValue.ValueChangeEvent<V>,V>, Serializable

Generic HasValue to use any type of component with Vaadin data binding.

Example:

 Label label = new Label();
 ReadOnlyHasValue<String> hasValue = new ReadOnlyHasValue<>(label::setText);
 binder.forField(hasValue).bind(SomeBean::getName, null);
 

Since:

1.0

See Also:

• Serialized Form

Nested Class Summary

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

HasValue.ValueChangeEvent<V extends Object>, HasValue.ValueChangeListener<E extends HasValue.ValueChangeEvent<?>>

Constructor Summary

Constructors

Constructor	Description
ReadOnlyHasValue(SerializableConsumer<V> valueProcessor)	Creates new ReadOnlyHasValue with null as an empty value.
ReadOnlyHasValue(SerializableConsumer<V> valueProcessor, V emptyValue)	Creates new ReadOnlyHasValue

Method Summary

Modifier and Type	Method	Description
Registration	addValueChangeListener(HasValue.ValueChangeListener<? super HasValue.ValueChangeEvent<V>> listener)
V	getEmptyValue()
V	getValue()
boolean	isReadOnly()
boolean	isRequiredIndicatorVisible()
void	setReadOnly(boolean readOnly)
void	setRequiredIndicatorVisible(boolean requiredIndicatorVisible)
void	setValue(V value)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

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

clear, getOptionalValue, isEmpty

Constructor Details

ReadOnlyHasValue

public ReadOnlyHasValue(SerializableConsumer<V> valueProcessor,
 V emptyValue)

Creates new ReadOnlyHasValue

Parameters:

valueProcessor - the value valueProcessor, e.g. a setter for displaying the value in a component

emptyValue - the value to be used as empty, null by default

ReadOnlyHasValue

public ReadOnlyHasValue(SerializableConsumer<V> valueProcessor)

Creates new ReadOnlyHasValue with null as an empty value.

Parameters:

valueProcessor - the value valueProcessor, e.g. a setter for displaying the value in a component

Method Details

setValue

public void setValue(V value)

Specified by:

setValue in interface HasValue<HasValue.ValueChangeEvent<V>,V>

getValue

public V getValue()

Specified by:

getValue in interface HasValue<HasValue.ValueChangeEvent<V>,V>

addValueChangeListener

public Registration addValueChangeListener(HasValue.ValueChangeListener<? super HasValue.ValueChangeEvent<V>> listener)

Specified by:

addValueChangeListener in interface HasValue<HasValue.ValueChangeEvent<V>,V>

isRequiredIndicatorVisible

public boolean isRequiredIndicatorVisible()

Specified by:

isRequiredIndicatorVisible in interface HasValue<HasValue.ValueChangeEvent<V>,V>

setRequiredIndicatorVisible

public void setRequiredIndicatorVisible(boolean requiredIndicatorVisible)

Specified by:

setRequiredIndicatorVisible in interface HasValue<HasValue.ValueChangeEvent<V>,V>

setReadOnly

public void setReadOnly(boolean readOnly)

Specified by:

setReadOnly in interface HasValue<HasValue.ValueChangeEvent<V>,V>

isReadOnly

public boolean isReadOnly()

Specified by:

isReadOnly in interface HasValue<HasValue.ValueChangeEvent<V>,V>

getEmptyValue

public V getEmptyValue()

Specified by:

getEmptyValue in interface HasValue<HasValue.ValueChangeEvent<V>,V>