Bug 71283 Type Hierarchy View should show active working set in content description [type hierarchy]
Eclipse 3.0 The type hierarchy should show the active working set in the content description. Instead of WorkbenchPart#setTitle(), it should use setContentDescription() to display the focus type and active working set.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/typehierarchy/TypeHierarchyViewPart.java
/**
	 * view part becomes visible
	 */
	protected void visibilityChanged(boolean isVisible) {
		fIsVisible= isVisible;
		if (isVisible && fNeedRefresh) {
			doTypeHierarchyChangedOnViewers(null);
		}
		fNeedRefresh= false;
	}
	
	
	/**
	 * Link selection to active editor.
	 */
	protected void editorActivated(IEditorPart editor) {
		if (!isLinkingEnabled()) {
			return;
		}
		if (fInputElement == null) {
			
			return;
		}
		
		IJavaElement elem= (IJavaElement)editor.getEditorInput().getAdapter(IJavaElement.class);
		try {
			TypeHierarchyViewer currentViewer= getCurrentViewer();
			if (elem instanceof IClassFile) {
				IType type= ((IClassFile)elem).getType();