FormAttributeListener

All Known Implementing Classes:

FormAttributeListener.Adapter, FormAttributeListener.Listeners, TerraFormSkin
```
public interface FormAttributeListener
```
Form attribute listener interface.

Nested Class Summary

Nested Classes
Modifier and Type	Interface	Description
`static class`	`FormAttributeListener.Adapter`	Deprecated. Since 2.1 and Java 8 the interface itself has default implementations.
`static class`	`FormAttributeListener.Listeners`	Form attribute listeners.

Method Summary

All Methods Instance Methods Default Methods
Modifier and Type	Method	Description
`default void`	`flagChanged(Form form, Component field, Form.Flag previousFlag)`	Called when a field's flag attribute has changed.
`default void`	`labelChanged(Form form, Component field, java.lang.String previousLabel)`	Called when a field's label attribute has changed.
`default void`	`requiredChanged(Form form, Component field)`	Called when a fields's required attribute has changed.

- Method Detail
  - labelChanged
```
default void labelChanged(Form form,
                          Component field,
                          java.lang.String previousLabel)
```
    Called when a field's label attribute has changed.
    
    Parameters:
    
    form - The enclosing form.
    
    field - The field whose form label has changed.
    
    previousLabel - The previous form label for this field.
  - requiredChanged
```
default void requiredChanged(Form form,
                             Component field)
```
    Called when a fields's required attribute has changed.
    
    Parameters:
    
    form - The enclosing form.
    
    field - The field that is or is not now required.
  - flagChanged
```
default void flagChanged(Form form,
                         Component field,
                         Form.Flag previousFlag)
```
    Called when a field's flag attribute has changed.
    
    Parameters:
    
    form - The enclosing form.
    
    field - The field whose flag attribute has changed.
    
    previousFlag - The previous flag value for this field.