| Package | Description | 
|---|---|
| com.google.gwt.event.logical.shared | Types related to logical events that do not have direct analogues to DOM
 events and which can be used in contexts other than web browsers. | 
| com.google.gwt.user.client.ui | Widgets, Panels, and other user-interface classes. | 
| Modifier and Type | Method and Description | 
|---|---|
| static <T> BeforeSelectionEvent<T> | BeforeSelectionEvent. fire(HasBeforeSelectionHandlers<T> source,
    T item)Fires a before selection event on all registered handlers in the handler
 manager. | 
| Modifier and Type | Method and Description | 
|---|---|
| void | BeforeSelectionHandler. onBeforeSelection(BeforeSelectionEvent<T> event)Called when  BeforeSelectionEventis fired. | 
| Modifier and Type | Method and Description | 
|---|---|
| void | ListenerWrapper.WrappedTabListener. onBeforeSelection(BeforeSelectionEvent<java.lang.Integer> event) |