@Nullable
protected static PsiLanguageInjectionHost findInjectionHost(Editor editor, PsiFile file) {
if (editor instanceof EditorWindow) return null;
final int offset = editor.getCaretModel().getOffset();
final PsiLanguageInjectionHost host =
PsiTreeUtil.getParentOfType(
file.findElementAt(offset), PsiLanguageInjectionHost.class, false);
if (host == null) return null;
return host.isValidHost() ? host : null;
}
