com.google.gwt.event.logical.shared

## Interface HasValueChangeHandlers<T>

- Type Parameters:
    `T` - the value about to be changed
  All Superinterfaces:
    HasHandlers
  All Known Subinterfaces:
    HasConstrainedValue<T>, HasValue<T>
  All Known Implementing Classes:
    CellWidget, CheckBox, DateBox, DatePicker, DoubleBox, IntegerBox, LongBox, PasswordTextBox, RadioButton, SimpleCheckBox, SimpleRadioButton, SuggestBox, TextArea, TextBox, TextBoxBase, ToggleButton, ValueBox, ValueBoxBase, ValueListBox, ValuePicker

      public interface HasValueChangeHandlers<T>
      extends HasHandlers

  A widget that implements this interface is a public source of `ValueChangeEvent` events.

- - ### Method Summary

    All Methods Instance Methods Abstract Methods
    Modifier and Type | Method and Description
    --- | ---
    `HandlerRegistration` | `addValueChangeHandler(ValueChangeHandler<T> handler)` Adds a `ValueChangeEvent` handler.

    - ### Methods inherited from interface com.google.gwt.event.shared.HasHandlers

      `fireEvent`

- - ### Method Detail

    - #### addValueChangeHandler

          HandlerRegistration addValueChangeHandler(ValueChangeHandler<T> handler)

      Adds a `ValueChangeEvent` handler.
      Parameters:
        `handler` - the handler
      Returns:
        the registration for the event