@NotNull
public static Collection<PsiFileSystemItem> getAbsoluteTopLevelDirLocations(
final @NotNull PsiFile file) {
final VirtualFile virtualFile = file.getVirtualFile();
if (virtualFile == null) {
return Collections.emptyList();
}
final Project project = file.getProject();
PsiDirectory parent = file.getParent();
final Module module = ModuleUtil.findModuleForPsiElement(parent == null ? file : parent);
if (module == null) {
return Collections.emptyList();
}
final FileReferenceHelper[] helpers = FileReferenceHelperRegistrar.getHelpers();
final ArrayList<PsiFileSystemItem> list = new ArrayList<PsiFileSystemItem>();
for (FileReferenceHelper helper : helpers) {
if (helper.isMine(project, virtualFile)) {
final Collection<PsiFileSystemItem> roots = helper.getRoots(module);
for (PsiFileSystemItem root : roots) {
LOG.assertTrue(root != null, "Helper " + helper + " produced a null root for " + file);
}
list.addAll(roots);
}
}
if (list.size() == 0) {
list.addAll(FileReferenceHelperRegistrar.getNotNullHelper(file).getRoots(module));
}
return list;
}
