Class AbstractFieldSupport<C extends Component & HasValue<AbstractField.ComponentValueChangeEvent<C,T>,T>,T>

Constructor Detail

• AbstractFieldSupport

  public AbstractFieldSupport(C component,
                              T defaultValue,
                              SerializableBiPredicate<T,T> valueEquals,
                              SerializableConsumer<T> setPresentationValue)

  Creates a new field support.

  Parameters:

  component - the owning field component

  defaultValue - the default field value

  valueEquals - a callback for comparing values

  setPresentationValue - a callback for setting presentation values

Method Detail

• addValueChangeListener

  public Registration addValueChangeListener(HasValue.ValueChangeListener<? super AbstractField.ComponentValueChangeEvent<C,T>> listener)

  Delegate method for HasValue.addValueChangeListener(com.vaadin.flow.component.HasValue.ValueChangeListener)

  Parameters:

  listener - the listener to add

  Returns:

  a registration for the listener

• getValue

  public T getValue()

  Delegate method for HasValue.getValue().

  Returns:

  the field value

• getEmptyValue

  public T getEmptyValue()

  Delegate method for HasValue.getEmptyValue().

  Returns:

  the empty value of this field

• setValue

  public void setValue(T value)

  Delegate method for HasValue.setValue(Object).

  Parameters:

  value - the value to set

• valueEquals

  public boolean valueEquals(T value1,
                             T value2)

  Delegate method corresponding to AbstractField.valueEquals(Object, Object).

  Parameters:

  value1 - the first instance

  value2 - the second instance

  Returns:

  true if the instances are equal; otherwise false

• setModelValue

  public void setModelValue(T newModelValue,
                            boolean fromClient)

  Delegate method corresponding to AbstractField.setModelValue(Object, boolean).

  Parameters:

  newModelValue - the new internal value to use

  fromClient - true if the new value originates from the client; otherwise false