Bug 62968 Source folders disappear in Package Explorer if set to Hierarchical Layout
I200405190010 If I set the view to "Hierarchical Layout" in the Package Explorer my "src" folder shows as empty if there are no java files in the root package (i.e. only sub-packages at the first level). Setting to "Flat" and they appear again. Tried a new Java project to recreate, but the problem is not showing on new projects. PB
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/packageview/PackageExplorerPart.java
elementMem.putString(TAG_PATH, ((IJavaElement) expandedElements[i]).getHandleIdentifier());
			}
		}
	}
	private void restoreFilterAndSorter() {
		fViewer.addFilter(new OutputFolderFilter());
		fViewer.setSorter(new JavaElementSorter());
		if (fMemento != null)	
			fActionSet.restoreFilterAndSorterState(fMemento);
	}
	private void restoreUIState(IMemento memento) {
		
		restoreCurrentFrame(memento);
		
		
		
		
	}
	private void restoreCurrentFrame(IMemento memento) {
		IMemento frameMemento = memento.getChild(TAG_CURRENT_FRAME);
		
		if (frameMemento != null) {
	        FrameAction action = fActionSet.getUpAction();
	        FrameList frameList= action.getFrameList();
			TreeFrame frame = new TreeFrame(fViewer);
			frame.restoreState(frameMemento);
			frame.setName(getFrameName(frame.getInput()));
			frame.setToolTipText(getToolTipText(frame.getInput()));
			frameList.gotoFrame(frame);
		}