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PATH: usr / local / lib / node_modules / ghost-cli / node_modules / rxjs / src / internal / operators

import { Operator } from '../Operator';
import { Subscriber } from '../Subscriber';
import { Observable } from '../Observable';
import { Subject } from '../Subject';
import { Subscription } from '../Subscription';

import { OuterSubscriber } from '../OuterSubscriber';
import { InnerSubscriber } from '../InnerSubscriber';
import { subscribeToResult } from '../util/subscribeToResult';

import { MonoTypeOperatorFunction, TeardownLogic } from '../types';

/**
 * Returns an Observable that mirrors the source Observable with the exception of a `complete`. If the source
 * Observable calls `complete`, this method will emit to the Observable returned from `notifier`. If that Observable
 * calls `complete` or `error`, then this method will call `complete` or `error` on the child subscription. Otherwise
 * this method will resubscribe to the source Observable.
 *
 * ![](repeatWhen.png)
 *
 * ## Example
 * Repeat a message stream on click
 * ```ts
 * import { of, fromEvent } from 'rxjs';
 * import { repeatWhen } from 'rxjs/operators';
 *
 * const source = of('Repeat message');
 * const documentClick$ = fromEvent(document, 'click');
 *
 * source.pipe(repeatWhen(() => documentClick$)
 * ).subscribe(data => console.log(data))
 * ```
 * @see {@link repeat}
 * @see {@link retry}
 * @see {@link retryWhen}
 *
 * @param {function(notifications: Observable): Observable} notifier - Receives an Observable of notifications with
 * which a user can `complete` or `error`, aborting the repetition.
 * @return {Observable} The source Observable modified with repeat logic.
 * @method repeatWhen
 * @owner Observable
 */
export function repeatWhen<T>(notifier: (notifications: Observable<any>) => Observable<any>): MonoTypeOperatorFunction<T> {
  return (source: Observable<T>) => source.lift(new RepeatWhenOperator(notifier));
}

class RepeatWhenOperator<T> implements Operator<T, T> {
  constructor(protected notifier: (notifications: Observable<any>) => Observable<any>) {
  }

call(subscriber: Subscriber<T>, source: any): TeardownLogic {
    return source.subscribe(new RepeatWhenSubscriber(subscriber, this.notifier, source));
  }
}

/**
 * We need this JSDoc comment for affecting ESDoc.
 * @ignore
 * @extends {Ignored}
 */
class RepeatWhenSubscriber<T, R> extends OuterSubscriber<T, R> {

private notifications: Subject<any>;
  private retries: Observable<any>;
  private retriesSubscription: Subscription;
  private sourceIsBeingSubscribedTo: boolean = true;

constructor(destination: Subscriber<R>,
              private notifier: (notifications: Observable<any>) => Observable<any>,
              private source: Observable<T>) {
    super(destination);
  }

notifyNext(outerValue: T, innerValue: R,
             outerIndex: number, innerIndex: number,
             innerSub: InnerSubscriber<T, R>): void {
    this.sourceIsBeingSubscribedTo = true;
    this.source.subscribe(this);
  }

notifyComplete(innerSub: InnerSubscriber<T, R>): void {
    if (this.sourceIsBeingSubscribedTo === false) {
      return super.complete();
    }
  }

complete() {
    this.sourceIsBeingSubscribedTo = false;

if (!this.isStopped) {
      if (!this.retries) {
        this.subscribeToRetries();
      }
      if (!this.retriesSubscription || this.retriesSubscription.closed) {
        return super.complete();
      }

this._unsubscribeAndRecycle();
      this.notifications.next();
    }
  }

/** @deprecated This is an internal implementation detail, do not use. */
  _unsubscribe() {
    const { notifications, retriesSubscription } = this;
    if (notifications) {
      notifications.unsubscribe();
      this.notifications = null;
    }
    if (retriesSubscription) {
      retriesSubscription.unsubscribe();
      this.retriesSubscription = null;
    }
    this.retries = null;
  }

/** @deprecated This is an internal implementation detail, do not use. */
  _unsubscribeAndRecycle(): Subscriber<T> {
    const { _unsubscribe } = this;

this._unsubscribe = null;
    super._unsubscribeAndRecycle();
    this._unsubscribe = _unsubscribe;

return this;
  }

private subscribeToRetries() {
    this.notifications = new Subject();
    let retries;
    try {
      const { notifier } = this;
      retries = notifier(this.notifications);
    } catch (e) {
      return super.complete();
    }
    this.retries = retries;
    this.retriesSubscription = subscribeToResult(this, retries);
  }
}

[-] toArray.ts [edit]
[-] window.ts [edit]
[-] retry.ts [edit]
[-] mergeAll.ts [edit]
[-] windowWhen.ts [edit]
[-] every.ts [edit]
[-] timeout.ts [edit]
[-] debounceTime.ts [edit]
[-] index.ts [edit]
[-] takeWhile.ts [edit]
[-] audit.ts [edit]
[-] reduce.ts [edit]
[-] mapTo.ts [edit]
[-] count.ts [edit]
[-] debounce.ts [edit]
[-] throwIfEmpty.ts [edit]
[-] auditTime.ts [edit]
[-] scan.ts [edit]
[-] switchAll.ts [edit]
[-] map.ts [edit]
[-] bufferCount.ts [edit]
[-] mergeScan.ts [edit]
[-] publish.ts [edit]
[-] min.ts [edit]
[+] ..
[-] publishReplay.ts [edit]
[-] bufferTime.ts [edit]
[-] share.ts [edit]
[-] repeat.ts [edit]
[-] distinct.ts [edit]
[-] concatMapTo.ts [edit]
[-] buffer.ts [edit]
[-] concatMap.ts [edit]
[-] max.ts [edit]
[-] partition.ts [edit]
[-] observeOn.ts [edit]
[-] bufferWhen.ts [edit]
[-] dematerialize.ts [edit]
[-] throttle.ts [edit]
[-] groupBy.ts [edit]
[-] withLatestFrom.ts [edit]
[-] exhaust.ts [edit]
[-] exhaustMap.ts [edit]
[-] retryWhen.ts [edit]
[-] zipAll.ts [edit]
[-] find.ts [edit]
[-] mergeMap.ts [edit]
[-] single.ts [edit]
[-] last.ts [edit]
[-] combineLatest.ts [edit]
[-] publishLast.ts [edit]
[-] pluck.ts [edit]
[-] pairwise.ts [edit]
[-] distinctUntilChanged.ts [edit]
[-] timeInterval.ts [edit]
[-] shareReplay.ts [edit]
[-] skipUntil.ts [edit]
[-] findIndex.ts [edit]
[-] windowToggle.ts [edit]
[-] startWith.ts [edit]
[-] timeoutWith.ts [edit]
[-] concat.ts [edit]
[-] materialize.ts [edit]
[-] timestamp.ts [edit]
[-] onErrorResumeNext.ts [edit]
[-] subscribeOn.ts [edit]
[-] takeUntil.ts [edit]
[-] skipLast.ts [edit]
[-] throttleTime.ts [edit]
[-] mergeMapTo.ts [edit]
[-] multicast.ts [edit]
[-] merge.ts [edit]
[-] takeLast.ts [edit]
[-] delayWhen.ts [edit]
[-] sampleTime.ts [edit]
[-] tap.ts [edit]
[-] take.ts [edit]
[-] sample.ts [edit]
[-] filter.ts [edit]
[-] skip.ts [edit]
[-] expand.ts [edit]
[-] publishBehavior.ts [edit]
[-] sequenceEqual.ts [edit]
[-] ignoreElements.ts [edit]
[-] catchError.ts [edit]
[-] endWith.ts [edit]
[-] refCount.ts [edit]
[-] windowCount.ts [edit]
[-] defaultIfEmpty.ts [edit]
[-] windowTime.ts [edit]
[-] switchMapTo.ts [edit]
[-] switchMap.ts [edit]
[-] delay.ts [edit]
[-] bufferToggle.ts [edit]
[-] repeatWhen.ts [edit]
[-] concatAll.ts [edit]
[-] first.ts [edit]
[-] zip.ts [edit]
[-] elementAt.ts [edit]
[-] skipWhile.ts [edit]
[-] race.ts [edit]
[-] finalize.ts [edit]
[-] combineAll.ts [edit]
[-] distinctUntilKeyChanged.ts [edit]
[-] isEmpty.ts [edit]