Bug 36456 Type heirarchy show final class icon only on double click [type hierarchy]
When opening a type heirarchy, the icons for the heirarchy do not show final classes (ie. the little 'F' in the icon). When the icon is double clicked to open the class, the icon changes.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/typehierarchy/TypeHierarchyViewPart.java
new JavaSearchActionGroup(this)});
		
		fActionGroups.fillActionBars(actionBars);
		fSelectAllAction= new SelectAllAction(fMethodsViewer);
		
		actionBars.setGlobalActionHandler(IWorkbenchActionConstants.SELECT_ALL, fSelectAllAction);
		
		initDragAndDrop();		
	}
	/**
	 * called from ToggleOrientationAction.
	 * @param orientation VIEW_ORIENTATION_SINGLE, VIEW_ORIENTATION_HORIZONTAL or VIEW_ORIENTATION_VERTICAL
	 */	
	public void setOrientation(int orientation) {
		if (fCurrentOrientation != orientation) {
			boolean methodViewerNeedsUpdate= false;
			
			if (fMethodViewerViewForm != null && !fMethodViewerViewForm.isDisposed()
					&& fTypeMethodsSplitter != null && !fTypeMethodsSplitter.isDisposed()) {
				if (orientation == VIEW_ORIENTATION_SINGLE) {
					fMethodViewerViewForm.setVisible(false);
					enableMemberFilter(false);
					updateMethodViewer(null);
				} else {
					if (fCurrentOrientation == VIEW_ORIENTATION_SINGLE) {
						fMethodViewerViewForm.setVisible(true);
						methodViewerNeedsUpdate= true;
					}
					boolean horizontal= orientation == VIEW_ORIENTATION_HORIZONTAL;
					fTypeMethodsSplitter.setOrientation(horizontal ? SWT.HORIZONTAL : SWT.VERTICAL);