UIEvents.PollEvent (vaadin-server 8.21.0 API)

java.lang.Object
- java.util.EventObject
- - com.vaadin.event.ConnectorEvent
  - - com.vaadin.ui.Component.Event
    - - com.vaadin.event.UIEvents.PollEvent

All Implemented Interfaces:

java.io.Serializable

Enclosing interface:

UIEvents
```
public static class UIEvents.PollEvent
extends Component.Event
```
An event that is fired whenever a client polls the server for asynchronous UI updates.

Since:

7.2

Author:

Vaadin Ltd

See Also:

Serialized Form

- Field Summary
  - Fields inherited from class java.util.EventObject
    source
- Constructor Summary
  
  Constructors
  Constructor Description
  
  PollEvent(UI ui)
- Method Summary
  
  All Methods Instance Methods Concrete Methods
  Modifier and Type Method Description
  
  UI getUI()
  Get the UI instance that received the poll request.
  - Methods inherited from class com.vaadin.ui.Component.Event
    getComponent
  - Methods inherited from class com.vaadin.event.ConnectorEvent
    getConnector
  - Methods inherited from class java.util.EventObject
    getSource, toString
  - Methods inherited from class java.lang.Object
    clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

- Constructor Detail
  - PollEvent
```
public PollEvent(UI ui)
```
- Method Detail
  - getUI
```
public UI getUI()
```
    Get the UI instance that received the poll request.
    
    Returns:
    
    the UI that received the poll request. Never null.