Package com.vaadin.flow.component
Interface PollNotifier
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- All Superinterfaces:
Serializable
- All Known Implementing Classes:
JavaScriptBootstrapUI
,UI
,WebComponentUI
public interface PollNotifier extends Serializable
The interface for adding and removingPollEvent
listeners.By implementing this interface, a class publicly announces that it is able to send
PollEvents
whenever the client sends a periodic poll message to the client, to check for asynchronous server-side modifications.- Since:
- 1.0
- See Also:
UI.setPollInterval(int)
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Method Summary
All Methods Instance Methods Default Methods Modifier and Type Method Description default Registration
addPollListener(ComponentEventListener<PollEvent> listener)
Add a poll listener.
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Method Detail
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addPollListener
default Registration addPollListener(ComponentEventListener<PollEvent> listener)
Add a poll listener.The listener is called whenever the client polls the server for asynchronous UI updates.
- Parameters:
listener
- the listener to add- Returns:
- a handle that can be used for removing the listener
- See Also:
UI.setPollInterval(int)
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