HasBeforeSelectionHandlers (GWT Javadoc)

Type Parameters:

T - the type about to be selected

All Superinterfaces:

HasHandlers

All Known Implementing Classes:

DecoratedTabBar, DecoratedTabPanel, StackLayoutPanel, TabBar, TabLayoutPanel, TabPanel
```
public interface HasBeforeSelectionHandlers<T>
extends HasHandlers
```
A widget that implements this interface is a public source of BeforeSelectionEvent events.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`HandlerRegistration`	`addBeforeSelectionHandler(BeforeSelectionHandler<T> handler)`	Adds a `BeforeSelectionEvent` handler.

Methods inherited from interface com.google.gwt.event.shared.HasHandlers
fireEvent

- Method Detail
  - addBeforeSelectionHandler
```
HandlerRegistration addBeforeSelectionHandler(BeforeSelectionHandler<T> handler)
```
    Adds a BeforeSelectionEvent handler.
    
    Parameters:
    
    handler - the handler
    
    Returns:
    
    the registration for the event