public interface HasClearHandlers
extends com.google.gwt.event.shared.HasHandlers
| Modifier and Type | Method and Description | 
|---|---|
| com.google.gwt.event.shared.HandlerRegistration | addClearHandler(ClearHandler handler)Notification method fired when the canvas is removed from the DOM via a  call to  clear(). | 
com.google.gwt.event.shared.HandlerRegistration addClearHandler(ClearHandler handler)
clear(). Canvases are cleared recursively, so if  a parent is
 clear()'d, all of its descendants will also be cleared. This notification is fired before the canvas has been
 removed from the DOM, and isDrawn() will return true if
 called while the  notification is running.handler - the clear handlerHandlerRegistration used to remove this handler