@Override
public int compare(final Usage o1, final Usage o2) {
if (o1 == NULL_NODE || o2 == NULL_NODE) return -1;
if (o1 instanceof Comparable && o2 instanceof Comparable) {
final int selfcompared = ((Comparable<Usage>) o1).compareTo(o2);
if (selfcompared != 0) return selfcompared;
if (o1 instanceof UsageInFile && o2 instanceof UsageInFile) {
UsageInFile u1 = (UsageInFile) o1;
UsageInFile u2 = (UsageInFile) o2;
VirtualFile f1 = u1.getFile();
VirtualFile f2 = u2.getFile();
if (f1 != null && f1.isValid() && f2 != null && f2.isValid()) {
return f1.getPresentableUrl().compareTo(f2.getPresentableUrl());
}
}
return 0;
}
return -1;
}
@NotNull
private Set<VirtualFile> getReadOnlyUsagesFiles() {
Set<Usage> usages = getReadOnlyUsages();
Set<VirtualFile> result = new THashSet<VirtualFile>();
for (Usage usage : usages) {
if (usage instanceof UsageInFile) {
UsageInFile usageInFile = (UsageInFile) usage;
VirtualFile file = usageInFile.getFile();
if (file != null) result.add(file);
}
if (usage instanceof UsageInFiles) {
UsageInFiles usageInFiles = (UsageInFiles) usage;
ContainerUtil.addAll(result, usageInFiles.getFiles());
}
}
for (UsageTarget target : myTargets) {
VirtualFile[] files = target.getFiles();
if (files == null) continue;
ContainerUtil.addAll(result, files);
}
return result;
}