Bug 32906 Open (in) Type Hierarchy: expansion state is inconsistent across the modes 'show type/supertype/subtype hierarchy' [type hierarchy]
case 1: - select 'show type hierarchy' in the hierarchy view - in an editor press F4 on a class name -> 'show type hierarchy' is ok -> 'show supertype hierarchy' is collapsed -> 'show subtype hierarchy' is ok case 2: - select 'show supertype hierarchy' - in an editor press F4 on a class name -> 'show supertype hierarchy' is ok -> 'show type hierarchy' is only expanded down to the focused type, this is inconsistent with case 1 -> 'show subtype hierarchy' is collapsed case 3: - select 'show subtype hierarchy' - in an editor press F4 on a class name -> 'show subtype hierarchy' is only expanded to level 1 (which is consistent but impractical) -> 'show supertype hierarchy' is collapsed -> 'show type hierarchy' is only expanded down to the focused type, this is inconsistent with case 1
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/typehierarchy/TypeHierarchyViewPart.java
private Display getDisplay() {
		if (fPagebook != null && !fPagebook.isDisposed()) {
			return fPagebook.getDisplay();
		}
		return null;
	}		
	
	private boolean isChildVisible(Composite pb, Control child) {
		Control[] children= pb.getChildren();
		for (int i= 0; i < children.length; i++) {
			if (children[i] == child && children[i].isVisible())
				return true;
		}
		return false;
	}
	
	private void updateTitle() {
		String viewerTitle= getCurrentViewer().getTitle();
		
		String tooltip;
		String title;
		if (fInputElement != null) {
			String[] args= new String[] { viewerTitle, JavaElementLabels.getElementLabel(fInputElement, JavaElementLabels.ALL_DEFAULT) };
			title= TypeHierarchyMessages.getFormattedString("TypeHierarchyViewPart.title", args); 
			tooltip= TypeHierarchyMessages.getFormattedString("TypeHierarchyViewPart.tooltip", args); 
		} else {
			title= viewerTitle;
			tooltip= viewerTitle;
		}