private ISiteFeature[] getFeaturesFromSelection(IStructuredSelection sel) { if (sel.isEmpty()) return new ISiteFeature[0]; if (cachedSelection == sel) return cachedFeatures; cachedSelection = sel; ArrayList<ISiteFeature> features = new ArrayList<ISiteFeature>(sel.size()); Iterator<?> iterator = sel.iterator(); while (iterator.hasNext()) { Object next = iterator.next(); if (next instanceof SiteFeatureAdapter) { if ((((SiteFeatureAdapter) next).feature) != null) { features.add(((SiteFeatureAdapter) next).feature); } } } cachedFeatures = features.toArray(new ISiteFeature[features.size()]); return cachedFeatures; }