com.vaadin.event.FieldEvents.FocusNotifier API 8.27.7 | Vaadin

com.vaadin.event.

All Superinterfaces:

Serializable

All Known Implementing Classes:

AbstractDateField, AbstractFocusable, AbstractLocalDateField, AbstractLocalDateTimeField, AbstractTextField, Accordion, Button, CheckBox, CheckBoxGroup, ColorPickerPopup, ComboBox, DateField, DateTimeField, InlineDateField, InlineDateTimeField, NativeButton, NativeSelect, PasswordField, RadioButtonGroup, TabSheet, TextArea, TextField, Window

Enclosing interface:

FieldEvents
```
public static interface FieldEvents.FocusNotifier
extends Serializable
```
The interface for adding and removing FocusEvent listeners. By implementing this interface a class explicitly announces that it will generate a FocusEvent when it receives keyboard focus.

Since:

6.2

See Also:

FieldEvents.FocusListener, FieldEvents.FocusEvent

Method Summary

All Methods
Modifier and Type	Method	Description
`Registration`	`addFocusListener(FieldEvents.FocusListener listener)`	Adds a `FocusListener` to the Component which gets fired when a `Field` receives keyboard focus.

- Method Detail
  - addFocusListener
```
Registration addFocusListener(FieldEvents.FocusListener listener)
```
    Adds a FocusListener to the Component which gets fired when a Field receives keyboard focus.
    
    Parameters:
    
    listener - the focus listener to add, not null
    
    Returns:
    
    a registration object for removing the listener
    
    Since:
    
    8.0
    
    See Also:
    
    FieldEvents.FocusListener, Registration