public interface DataChangedHandler
extends com.google.gwt.event.shared.EventHandler
| Modifier and Type | Method and Description | 
|---|---|
| void | onDataChanged(DataChangedEvent event)Notification method fired when the TreeGrid's data changes, for any reason. | 
void onDataChanged(DataChangedEvent event)
Examples of why data changed might be:
addData(), updateData(), or removeData() DataSource
 updates from the server for ResultTree data (triggered by record editing, etc.)
 ResultTree data Tree data if made through APIs such as Tree.add(), Tree.remove(), etc. setData() doesn't call this notification directly, but it may fire if
 one of the above listed events is triggered (e.g. a server fetch for  ResultTree data).  Note that the operationType parameter is optional
 and will be passed and contain the operation (e.g. "update") if this notification was triggered by a fetch, an addData(), updateData(), or removeData(), or a DataSource
 update for ResultTree data (the first three reasons listed above) but otherwise
 will be null.
event - the event