Package com.vaadin.collaborationengine

Interface PresenceHandler

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.
@FunctionalInterface public interface PresenceHandler extends Serializable
Functional interface that defines how to handle user presence changes in a topic.
Since:
4.0
Author:
Vaadin Ltd
See Also:

  • Nested Class Summary

    Nested Classes
    Modifier and Type
    Interface
    Description
    static interface 
    PresenceHandler.PresenceContext
    The context of the user presence.

  • Method Summary

    Modifier and Type
    Method
    Description
    com.vaadin.flow.shared.Registration
    handlePresence(PresenceHandler.PresenceContext context)
    Handles a change of user presence in a topic.

  • Method Details

    • handlePresence

      com.vaadin.flow.shared.Registration handlePresence(PresenceHandler.PresenceContext context)
      Handles a change of user presence in a topic.
      Parameters:
      context - the context of the user presence, not null
      Returns:
      a registration that will be removed when the user stops being present