Bug 126507 [CommonNavigator] [Java] Proposed Java extension for Common Navigator
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/packageview/PackageExplorerContentProvider.java
postRefresh(internalGetParent(parent), PARENT, parent);
				return true;
			} else 
				postRemove(resource);
		}
		if ((status & IResourceDelta.ADDED) != 0) {
			if (parent instanceof IPackageFragment) {
				
				postRefresh(internalGetParent(parent), PARENT, parent);	
				return true;
			} else
				postAdd(parent, resource);
		}
		
		if ((flags & IResourceDelta.OPEN) != 0) {
			postProjectStateChanged(internalGetParent(parent));
			return true;		
		}
		processResourceDeltas(delta.getAffectedChildren(), resource);
		return false;
	}
	
	public void setIsFlatLayout(boolean state) {
		fIsFlatLayout= state;
	}
	/**
	 * Process resource deltas.
	 *
	 * @return true if the parent got refreshed