Package com.vaadin.swingkit.client

Interface VaadinEventNotifier

All Known Implementing Classes:
JCefJVaadinPanel, JVaadinPanel
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 VaadinEventNotifier
A VaadinEventNotifier is responsible to handle and update listeners of Vaadin actions. It should be notified when a Vaadin action occurs and then forwards it to any registered listener.
See Also:

  • Method Details

    • addEventListener

      default void addEventListener(String eventType, VaadinEventListener eventListener)
      Adds a listener to be notified when an action occurs.
      Parameters:
      eventType - the type of events the listener should listen to.
      eventListener - the listener to add.

    • removeEventListener

      default void removeEventListener(String eventType, VaadinEventListener eventListener)
      Removes a listener, so it is no longer notified when an action occurs.
      Parameters:
      eventType - the type of the event the listener is registered to listen.
      eventListener - the listener to remove.

    • fireEvent

      default void fireEvent(VaadinSwingEvent event)
      Emits an event to all registered listeners of the same type as the event's.
      Parameters:
      event - the event to emit.

    • clearListeners

      default void clearListeners(String eventType)
      Unregister all listeners of a certain event type.
      Parameters:
      eventType - the type of event to clear of listeners.

    • clearListeners

      default void clearListeners()
      Unregister all listeners.

    • getListeners

      Map<String,List<VaadinEventListener>> getListeners()
      Get a map with one list for each type of all listeners registered in this notifier.
      Returns:
      a map with one list of all registered listeners for each event type.