com.smartgwt.client.widgets.tree.events

Interface DataChangedHandler

All Superinterfaces:

com.google.gwt.event.shared.EventHandler

public interface DataChangedHandler
extends com.google.gwt.event.shared.EventHandler

Method Summary

Modifier and Type	Method and Description
void	onDataChanged(DataChangedEvent event) Notification method fired when the TreeGrid's data changes, for any reason.

Method Detail

onDataChanged

void onDataChanged(DataChangedEvent event)

Notification method fired when the TreeGrid's data changes, for any reason.

Examples of why data changed might be:

• a call to addData.(), updateData.(), or removeData.()
• DataSource updates from the server for ResultTree data (triggered by record editing, etc.)
• fetches arriving back from the server for ResultTree data
• programmatic changes to Tree data if made through APIs such as Tree.add(), Tree.remove(), etc.
• cache invalidation
• filtering

Calling 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.

Parameters:

event - the event