Package com.vaadin.flow.internal.nodefeature

Class SignalBindingFeature

java.lang.Object

com.vaadin.flow.internal.nodefeature.NodeFeature

com.vaadin.flow.internal.nodefeature.ServerSideFeature

com.vaadin.flow.internal.nodefeature.SignalBindingFeature

All Implemented Interfaces:

Serializable

public class SignalBindingFeature
extends ServerSideFeature

Node feature for binding Signals to various properties of a node.

For internal use only. May be renamed or removed in a future release.

See Also:

• Serialized Form

Field Summary

Fields

Modifier and Type	Field	Description
static final String	ENABLED
static final String	VALUE

Constructor Summary

Constructors

Constructor	Description
SignalBindingFeature(StateNode node)	Creates a SignalBindingFeature for the given node.

Method Summary

Modifier and Type	Method	Description
boolean	hasBinding(String key)	Checks whether there is a binding for the given key.
void	removeBinding(String key)	Removes the binding for the given key.
void	setBinding(String key, Registration registration, com.vaadin.signals.Signal<?> signal)	Sets a binding for the given key.
<T> void	updateWritableSignalValue(String key, T value)	Updates the value of the writable signal bound to the given key.

Methods inherited from class com.vaadin.flow.internal.nodefeature.ServerSideFeature

collectChanges, forEachChild, generateChangesFromEmpty

Methods inherited from class com.vaadin.flow.internal.nodefeature.NodeFeature

allowsChanges, attachPotentialChild, detatchPotentialChild, getNode, onAttach, onDetach

Methods inherited from class java.lang.Object

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

Field Details

ENABLED

public static final String ENABLED

See Also:

• Constant Field Values

VALUE

public static final String VALUE

See Also:

• Constant Field Values

Constructor Details

SignalBindingFeature

public SignalBindingFeature(StateNode node)

Creates a SignalBindingFeature for the given node.

Parameters:

node - the node which supports the feature

Method Details

setBinding

public void setBinding(String key,
 Registration registration,
 com.vaadin.signals.Signal<?> signal)

Sets a binding for the given key.

Parameters:

key - the key

registration - the registration

signal - the signal

hasBinding

public boolean hasBinding(String key)

Checks whether there is a binding for the given key.

Parameters:

key - the key

Returns:

true if there is a binding for the given key, false otherwise

removeBinding

public void removeBinding(String key)

Removes the binding for the given key.

Parameters:

key - the key

updateWritableSignalValue

public <T> void updateWritableSignalValue(String key,
 T value)

Updates the value of the writable signal bound to the given key.

Type Parameters:

T - the type of the value

Parameters:

key - the key

value - the new value