eventsHelper.js 1.2 KB

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  1. "use strict";
  2. Object.defineProperty(exports, "__esModule", {
  3. value: true
  4. });
  5. exports.eventsHelper = void 0;
  6. /**
  7. * Copyright 2017 Google Inc. All rights reserved.
  8. * Modifications copyright (c) Microsoft Corporation.
  9. *
  10. * Licensed under the Apache License, Version 2.0 (the "License");
  11. * you may not use this file except in compliance with the License.
  12. * You may obtain a copy of the License at
  13. *
  14. * http://www.apache.org/licenses/LICENSE-2.0
  15. *
  16. * Unless required by applicable law or agreed to in writing, software
  17. * distributed under the License is distributed on an "AS IS" BASIS,
  18. * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  19. * See the License for the specific language governing permissions and
  20. * limitations under the License.
  21. */
  22. class EventsHelper {
  23. static addEventListener(emitter, eventName, handler) {
  24. emitter.on(eventName, handler);
  25. return {
  26. emitter,
  27. eventName,
  28. handler
  29. };
  30. }
  31. static removeEventListeners(listeners) {
  32. for (const listener of listeners) listener.emitter.removeListener(listener.eventName, listener.handler);
  33. listeners.splice(0, listeners.length);
  34. }
  35. }
  36. const eventsHelper = exports.eventsHelper = EventsHelper;