public interface HasGroupByHandlers
extends com.google.gwt.event.shared.HasHandlers
| Modifier and Type | Method and Description | 
|---|---|
com.google.gwt.event.shared.HandlerRegistration | 
addGroupByHandler(GroupByHandler handler)
Callback fired when the user attempts to group or ungroup the listGrid, or when  
groupBy() is called programmatically. | 
com.google.gwt.event.shared.HandlerRegistration addGroupByHandler(GroupByHandler handler)
groupBy() is called programmatically.  This event may be cancelled.
  This notification is fired before the data is updated
 to reflect the grouping. See also ListGrid.groupByComplete().
handler - the groupBy handlerHandlerRegistration used to remove this handler