public interface HasChangedHandlers extends HasHandlers
|Modifier and Type||Method and Description|
Called when a FormItem's value has been changed as the result of user interaction.
HandlerRegistration addChangedHandler(ChangedHandler handler)
Change/Changed notifications vs "...When" rules: the
changed events only fire when an end user modifies a field value. If you are trying to dynamically control
the visibility or enabled state of other components in response to these events, consider instead using properties
Canvas.enableWhen on the target component. (Similar properties are
MenuItem and other components).
handler- the changed handler
HandlerRegistrationused to remove this handler