chromium/src/third_party/blink/renderer/modules/modalclosewatcher/modal_close_watcher.idl

// Copyright 2021 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

[
  Exposed=Window,
  RuntimeEnabled=ModalCloseWatcher
] interface ModalCloseWatcher {
  [CallWith=ScriptState, RaisesException] constructor();

  void signalClosed();
  void destroy();

  attribute EventHandler onbeforeclose;
  attribute EventHandler onclose;
};