Package com.vaadin.classic.v8.ui

Class Event

java.lang.Object
java.util.EventObject
com.vaadin.flow.component.ComponentEvent<com.vaadin.flow.component.Component>
com.vaadin.classic.v8.ui.Event
All Implemented Interfaces:
Serializable
Direct Known Subclasses:
HasComponents.ComponentAttachEvent, HasComponents.ComponentDetachEvent, MouseEvents.ClickEvent
public class Event extends com.vaadin.flow.component.ComponentEvent<com.vaadin.flow.component.Component>
Legacy version of Event class that resembles Vaadin 7/8's Component.Event API as closely as possible in order to facilitate migration to newer versions of Vaadin. Superclass of all component originated events.

Events are the basis of all user interaction handling in Vaadin. To handle events, you provide a listener object that receives the events of the particular event type. 

 Button button = new Button("Click Me!");
 button.addListener(new Button.ClickListener() {
     public void buttonClick(ClickEvent event) {
         getWindow().showNotification("Thank You!");
     }
 });
 layout.addComponent(button);

Notice that while each of the event types have their corresponding listener types; the listener interfaces are not required to inherit the com.vaadin.legacy.ui.Listener interface.

See Also:

  • Field Summary

    Fields inherited from class java.util.EventObject

    source

  • Constructor Summary

    Constructors
    Constructor
    Description
    Event(com.vaadin.flow.component.Component source)
    Constructs a new event with the specified source component.
    Event(com.vaadin.flow.component.Component source, boolean fromClient)
    Creates a new event using the given source and indicator whether the event originated from the client side or the server side.

  • Method Summary

    Modifier and Type
    Method
    Description
    com.vaadin.flow.component.Component
    getComponent()
    Gets the component where the event occurred.

    Methods inherited from class com.vaadin.flow.component.ComponentEvent

    getSource, isFromClient, unregisterListener

    Methods inherited from class java.util.EventObject

    toString

    Methods inherited from class java.lang.Object

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

  • Constructor Details

    • Event

      public Event(com.vaadin.flow.component.Component source)
      Constructs a new event with the specified source component.
      Parameters:
      source - the source component of the event

    • Event

      public Event(com.vaadin.flow.component.Component source, boolean fromClient)
      Creates a new event using the given source and indicator whether the event originated from the client side or the server side.
      Parameters:
      source - the source component
      fromClient - true if the event originated from the client side, false otherwise

  • Method Details

    • getComponent

      public com.vaadin.flow.component.Component getComponent()
      Gets the component where the event occurred.
      Returns:
      the source component of the event