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;
}
private boolean canOperateOnSelection() {
ISelection sel = fSite.getSelectionProvider().getSelection();
if (!(sel instanceof IStructuredSelection)) return false;
IStructuredSelection selection = (IStructuredSelection) sel;
if (selection.isEmpty()) {
return false;
}
for (Iterator iter = selection.iterator(); iter.hasNext(); ) {
Object element = iter.next();
if (element instanceof IProject) {
IProject project = (IProject) element;
if (!project.isAccessible()) {
return false;
}
}
if (element instanceof IWorkingSet) return false;
}
return true;
}
private boolean handleRemove() {
IStructuredSelection ssel = (IStructuredSelection) fCategoryViewer.getSelection();
Iterator<?> iterator = ssel.iterator();
boolean success = true;
Set<?> removedCategories = new HashSet<Object>();
while (iterator.hasNext()) {
Object object = iterator.next();
if (object == null) continue;
if (object instanceof ISiteCategoryDefinition) {
if (!handleRemoveCategoryDefinition((ISiteCategoryDefinition) object)) {
success = false;
}
} else {
// check if some of features was not removed during category removal
SiteFeatureAdapter fa = (SiteFeatureAdapter) object;
if (removedCategories.contains(fa.category)) continue;
if (!handleRemoveSiteFeatureAdapter(fa)) {
success = false;
}
}
}
return success;
}