@NotNull
private Collection<PsiFileSystemItem> getContextByFile(@NotNull PsiFile file) {
final PsiElement context = file.getContext();
if (context != null) file = context.getContainingFile();
if (useIncludingFileAsContext()) {
final FileContextProvider contextProvider = FileContextProvider.getProvider(file);
if (contextProvider != null) {
final Collection<PsiFileSystemItem> folders = contextProvider.getContextFolders(file);
if (!folders.isEmpty()) {
return folders;
}
final PsiFile contextFile = contextProvider.getContextFile(file);
if (contextFile != null) {
return Collections.<PsiFileSystemItem>singleton(contextFile.getParent());
}
}
}
VirtualFile virtualFile = file.getOriginalFile().getVirtualFile();
if (virtualFile != null) {
final FileReferenceHelper[] helpers = FileReferenceHelperRegistrar.getHelpers();
final ArrayList<PsiFileSystemItem> list = new ArrayList<PsiFileSystemItem>();
final Project project = file.getProject();
for (FileReferenceHelper helper : helpers) {
if (helper.isMine(project, virtualFile)) {
list.addAll(helper.getContexts(project, virtualFile));
}
}
if (list.size() > 0) {
return list;
}
final VirtualFile parent = virtualFile.getParent();
if (parent != null) {
final PsiDirectory directory = file.getManager().findDirectory(parent);
if (directory != null) {
return Collections.<PsiFileSystemItem>singleton(directory);
}
}
}
return Collections.emptyList();
}
