Package com.google.gwt.event.dom.client

## Interface HasChangeHandlers

- All Superinterfaces:
    `HasHandlers`
  All Known Implementing Classes:
    `DoubleBox`, `FileUpload`, `IntegerBox`, `ListBox`, `LongBox`, `PasswordTextBox`, `TextArea`, `TextBox`, `TextBoxBase`, `ValueBox`, `ValueBoxBase`

      public interface HasChangeHandlers
      extends HasHandlers

  A widget that implements this interface provides registration for `ChangeHandler` instances.

- - ### Method Summary

    All Methods Instance Methods Abstract Methods
    Modifier and Type | Method | Description
    --- | --- | ---
    `HandlerRegistration` | `addChangeHandler​(ChangeHandler handler)` | Adds a `ChangeEvent` handler.

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

      `fireEvent`

- - ### Method Detail

    - #### addChangeHandler

          HandlerRegistration addChangeHandler​(ChangeHandler handler)

      Adds a `ChangeEvent` handler.
      Parameters:
        `handler` - the change handler
      Returns:
        `HandlerRegistration` used to remove this handler