public static boolean validElement(@NotNull PsiElement element) {
if (element instanceof PsiFile) return true;
if (!element.isPhysical()) return false;
final RefactoringSupportProvider provider =
LanguageRefactoringSupport.INSTANCE.forLanguage(element.getLanguage());
return provider.isSafeDeleteAvailable(element);
}
@Override
public boolean isSafeDeleteAvailable(PsiElement element) {
if (!element.isWritable() || element.getContainingFile() == null) return false;
final RefactoringSupportProvider realProvider =
ContextProvider.getContextProvider(element).getRefactoringSupportProvider();
return realProvider != null && realProvider.isSafeDeleteAvailable(element);
}