UI.DelayedCallbackRegistration (vaadin-server 8.30-SNAPSHOT API)

All Superinterfaces:

Serializable

Enclosing class:

UI
```
public static interface UI.DelayedCallbackRegistration
extends Serializable
```
An interface used for keeping track of callback requests registered via UI.runAfterRoundTrip(DelayedCallback).

Since:

8.18

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`boolean`	`cancel()`	Cancels the pending callback operation and stops this registration object from triggering any further round-trips.
`long`	`getId()`	Returns the current ID of this registration object.
`boolean`	`hasExecuted()`	Returns `true` if the delay has been completed and the callback operation has been executed.
`boolean`	`isCancelled()`	Returns `true` if the callback operation was cancelled successfully before it could be executed.
`boolean`	`isPending()`	Returns `true` if the callback operation is still waiting to be executed.

- Method Detail
  - isPending
```
boolean isPending()
```
    Returns true if the callback operation is still waiting to be executed.
    
    Returns:
    
    true if callback still waiting, false otherwise
  - hasExecuted
```
boolean hasExecuted()
```
    Returns true if the delay has been completed and the callback operation has been executed.
    
    Returns:
    
    true if callback executed, false otherwise
  - isCancelled
```
boolean isCancelled()
```
    Returns true if the callback operation was cancelled successfully before it could be executed.
    
    Returns:
    
    true if cancelled successfully, false otherwise
    
    See Also:
    
    cancel()
  - cancel
```
boolean cancel()
```
    Cancels the pending callback operation and stops this registration object from triggering any further round-trips. Does nothing if the callback operation has been executed already.
    Note: calling this method does not prevent round-trips getting triggered for other reasons.
    
    Returns:
    
    true if cancelling was successful, false otherwise
  - getId
```
long getId()
```
    Returns the current ID of this registration object. If the registration has been configured to wait for multiple round-trips, the ID gets updated for each round.
    
    Returns:
    
    current ID