NewUserHandler (Vaadin Platform (vaadin-platform-javadoc) 23.3.16 API)

All Superinterfaces:

Serializable

Functional Interface:

This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.
```
@Deprecated
@FunctionalInterface
public interface NewUserHandler
extends Serializable
```
Deprecated.
Use PresenceHandler instead

Functional interface that defines how to handle a user when it becomes present in a topic.

Since:

3.2

Author:

Vaadin Ltd

See Also:

PresenceManager.setNewUserHandler(NewUserHandler)

Method Summary

All Methods Instance Methods Abstract Methods Deprecated Methods
Modifier and Type	Method	Description
`Registration`	`handleNewUser(UserInfo user)`	Deprecated. Handles a user when it becomes present in a topic.

- Method Detail
  - handleNewUser
```
Registration handleNewUser(UserInfo user)
```
    Deprecated.
    
    Handles a user when it becomes present in a topic.
    
    Parameters:
    
    user - the user that becomes present
    
    Returns:
    
    a registration that will be removed when the user stops being present