Bug 16897 No busy indicator while populating type hierarchy
Build: Freeze 1 In a self-hosting workspace, select the type IAdaptable in an editor and hit F4 to populate the type hiearchy. Since this interface has many sub-types, this takes several seconds to populate. There should be a busy indicator while this is happening.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/typehierarchy/TypeHierarchyViewPart.java
getCurrentViewer().update(changedTypes, new String[] { IBasicPropertyConstants.P_TEXT, IBasicPropertyConstants.P_IMAGE } );
				}
			}
			fMethodsViewer.refresh();
		}
	}	
	
	
	/**
	 * Determines the input element to be used initially .
	 */	
	private IJavaElement determineInputElement() {
		Object input= getSite().getPage().getInput();
		if (input instanceof IJavaElement) { 
			IJavaElement elem= (IJavaElement) input;
			if (elem instanceof IMember) {
				return elem;
			} else {
				int kind= elem.getElementType();
				if (kind == IJavaElement.JAVA_PROJECT || kind == IJavaElement.PACKAGE_FRAGMENT_ROOT || kind == IJavaElement.PACKAGE_FRAGMENT) {
					return elem;
				}
			}
		} 
		return null;	
	}
	
	/*
	 * @see IViewPart#init
	 */