Package com.vaadin.flow.dom.impl

Class ElementJsInitializerRegistration

java.lang.Object

com.vaadin.flow.dom.impl.ElementJsInitializerRegistration

All Implemented Interfaces:

Registration, Serializable

public final class ElementJsInitializerRegistration
extends Object
implements Registration

Server-side bookkeeping for a JavaScript initializer registered through Element.addJsInitializer(String, Object...).

Re-emits the init invocation each time the client acquires a fresh DOM for this element, and emits a matching dispose when the registration is removed. The user expression is sent as a JsFunction parameter; the wrapper expression itself contains only framework code that delegates registry bookkeeping to this.registerInitializer / this.disposeInitializer, which the client provides as part of the executeJs execution context.

For internal use only.

See Also:

• Serialized Form

Constructor Summary

Constructors

Constructor	Description
ElementJsInitializerRegistration(StateNode node, String expression, Object[] parameters)	Creates a new registration and schedules the first init invocation if the node is currently attached.

Method Summary

Modifier and Type	Method	Description
void	remove()	Removes the associated listener from the event source.

Methods inherited from class java.lang.Object

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

Constructor Details

ElementJsInitializerRegistration

public ElementJsInitializerRegistration(StateNode node,
 String expression,
 Object[] parameters)

Creates a new registration and schedules the first init invocation if the node is currently attached.

Parameters:

node - the owning state node, not null

expression - the user-supplied expression, not null

parameters - the user-supplied parameters, captured by the JsFunction

Method Details

remove

public void remove()

Description copied from interface: Registration

Removes the associated listener from the event source.

The remove method called after removal does nothing.

Specified by:

remove in interface Registration

See Also:

• Registration.once(Command)