com.smartgwt.client.widgets.tree.events

Interface HasDataChangedHandlers

All Superinterfaces:

com.google.gwt.event.shared.HasHandlers

public interface HasDataChangedHandlers
extends com.google.gwt.event.shared.HasHandlers

Method Summary

Modifier and Type	Method and Description
com.google.gwt.event.shared.HandlerRegistration	addDataChangedHandler(DataChangedHandler handler) Notification method fired when the TreeGrid's data changes, for any reason.

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

fireEvent

Method Detail

addDataChangedHandler

com.google.gwt.event.shared.HandlerRegistration addDataChangedHandler(DataChangedHandler handler)

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:

handler - the dataChanged handler

Returns:

HandlerRegistration used to remove this handler