ColdObservable.js 1.4 KB

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  1. import { Observable } from '../Observable';
  2. import { Subscription } from '../Subscription';
  3. import { SubscriptionLoggable } from './SubscriptionLoggable';
  4. import { applyMixins } from '../util/applyMixins';
  5. import { observeNotification } from '../Notification';
  6. export class ColdObservable extends Observable {
  7. constructor(messages, scheduler) {
  8. super(function (subscriber) {
  9. const observable = this;
  10. const index = observable.logSubscribedFrame();
  11. const subscription = new Subscription();
  12. subscription.add(new Subscription(() => {
  13. observable.logUnsubscribedFrame(index);
  14. }));
  15. observable.scheduleMessages(subscriber);
  16. return subscription;
  17. });
  18. this.messages = messages;
  19. this.subscriptions = [];
  20. this.scheduler = scheduler;
  21. }
  22. scheduleMessages(subscriber) {
  23. const messagesLength = this.messages.length;
  24. for (let i = 0; i < messagesLength; i++) {
  25. const message = this.messages[i];
  26. subscriber.add(this.scheduler.schedule((state) => {
  27. const { message: { notification }, subscriber: destination } = state;
  28. observeNotification(notification, destination);
  29. }, message.frame, { message, subscriber }));
  30. }
  31. }
  32. }
  33. applyMixins(ColdObservable, [SubscriptionLoggable]);
  34. //# sourceMappingURL=ColdObservable.js.map