com.smartgwt.client.widgets.tree

## Interface HasDataChangedHandlers

- All Superinterfaces:
    com.google.gwt.event.shared.HasHandlers

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

- - ### Method Summary

    All Methods Instance Methods Abstract Methods
    Modifier and Type | Method and Description
    --- | ---
    `com.google.gwt.event.shared.HandlerRegistration` | `addDataChangedHandler(DataChangedHandler handler)` Called when the structure of this tree is changed in any way.

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

      `fireEvent`

- - ### Method Detail

    - #### addDataChangedHandler

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

      Called when the structure of this tree is changed in any way. Intended to be observed.
      Note that on a big change (many items being added or deleted) this may be called multiple times
      Parameters:
        `handler` - the dataChanged handler
      Returns:
        `HandlerRegistration` used to remove this handler