| Package | Description | 
|---|---|
| com.google.gwt.event.logical.shared | Types related to logical events that do not have direct analogues to DOM
 events and which can be used in contexts other than web browsers. | 
| com.google.gwt.user.cellview.client | The "cellview" widget set. | 
| com.google.gwt.user.client.ui | Widgets, Panels, and other user-interface classes. | 
| Modifier and Type | Method and Description | 
|---|---|
| GwtEvent.Type<OpenHandler<T>> | OpenEvent. getAssociatedType() | 
| static GwtEvent.Type<OpenHandler<?>> | OpenEvent. getType()Gets the type associated with this event. | 
| Modifier and Type | Method and Description | 
|---|---|
| HandlerRegistration | HasOpenHandlers. addOpenHandler(OpenHandler<T> handler)Adds an  OpenEventhandler. | 
| protected void | OpenEvent. dispatch(OpenHandler<T> handler) | 
| Modifier and Type | Method and Description | 
|---|---|
| HandlerRegistration | AbstractCellTree. addOpenHandler(OpenHandler<TreeNode> handler) | 
| Modifier and Type | Method and Description | 
|---|---|
| HandlerRegistration | DisclosurePanel. addOpenHandler(OpenHandler<DisclosurePanel> handler) | 
| HandlerRegistration | Tree. addOpenHandler(OpenHandler<TreeItem> handler) | 
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