@Override
public boolean contains(@NotNull VirtualFile file) {
if (file instanceof VirtualFileWindow) return true;
if (myFileIndex.isInLibraryClasses(file) && !myFileIndex.isInSourceContent(file)) return false;
return myFileIndex.isInContent(file);
}
private boolean checkClassUnderSources(final PsiElement element, final Project project) {
final PsiFile file = element.getContainingFile();
if (file != null && file.getVirtualFile() != null) {
final FileIndexFacade indexFacade = FileIndexFacade.getInstance(project);
final VirtualFile vf = file.getVirtualFile();
return indexFacade.isInSource(vf) || indexFacade.isInSourceContent(vf);
}
return false;
}