@reactivex/rxjs
Version:
Reactive Extensions for modern JavaScript
110 lines • 4.69 kB
JavaScript
"use strict";
var __extends = (this && this.__extends) || function (d, b) {
for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p];
function __() { this.constructor = d; }
d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
};
var Subject_1 = require('../Subject');
var tryCatch_1 = require('../util/tryCatch');
var errorObject_1 = require('../util/errorObject');
var OuterSubscriber_1 = require('../OuterSubscriber');
var subscribeToResult_1 = require('../util/subscribeToResult');
/**
* Returns an Observable that emits the same values as the source observable with the exception of a `complete`.
* A `complete` will cause the emission of the Throwable that cause the complete to the Observable returned from
* notificationHandler. If that Observable calls onComplete or `complete` then retry will call `complete` or `error`
* on the child subscription. Otherwise, this Observable will resubscribe to the source observable, on a particular
* IScheduler.
*
* <img src="./img/repeatWhen.png" width="100%">
*
* @param {notificationHandler} receives an Observable of notifications with which a user can `complete` or `error`,
* aborting the retry.
* @param {scheduler} the IScheduler on which to subscribe to the source Observable.
* @return {Observable} the source Observable modified with retry logic.
* @method repeatWhen
* @owner Observable
*/
function repeatWhen(notifier) {
return this.lift(new RepeatWhenOperator(notifier));
}
exports.repeatWhen = repeatWhen;
var RepeatWhenOperator = (function () {
function RepeatWhenOperator(notifier) {
this.notifier = notifier;
}
RepeatWhenOperator.prototype.call = function (subscriber, source) {
return source.subscribe(new RepeatWhenSubscriber(subscriber, this.notifier, source));
};
return RepeatWhenOperator;
}());
/**
* We need this JSDoc comment for affecting ESDoc.
* @ignore
* @extends {Ignored}
*/
var RepeatWhenSubscriber = (function (_super) {
__extends(RepeatWhenSubscriber, _super);
function RepeatWhenSubscriber(destination, notifier, source) {
_super.call(this, destination);
this.notifier = notifier;
this.source = source;
this.sourceIsBeingSubscribedTo = true;
}
RepeatWhenSubscriber.prototype.notifyNext = function (outerValue, innerValue, outerIndex, innerIndex, innerSub) {
this.sourceIsBeingSubscribedTo = true;
this.source.subscribe(this);
};
RepeatWhenSubscriber.prototype.notifyComplete = function (innerSub) {
if (this.sourceIsBeingSubscribedTo === false) {
return _super.prototype.complete.call(this);
}
};
RepeatWhenSubscriber.prototype.complete = function () {
this.sourceIsBeingSubscribedTo = false;
if (!this.isStopped) {
if (!this.retries) {
this.subscribeToRetries();
}
else if (this.retriesSubscription.closed) {
return _super.prototype.complete.call(this);
}
this._unsubscribeAndRecycle();
this.notifications.next();
}
};
RepeatWhenSubscriber.prototype._unsubscribe = function () {
var _a = this, notifications = _a.notifications, retriesSubscription = _a.retriesSubscription;
if (notifications) {
notifications.unsubscribe();
this.notifications = null;
}
if (retriesSubscription) {
retriesSubscription.unsubscribe();
this.retriesSubscription = null;
}
this.retries = null;
};
RepeatWhenSubscriber.prototype._unsubscribeAndRecycle = function () {
var _a = this, notifications = _a.notifications, retries = _a.retries, retriesSubscription = _a.retriesSubscription;
this.notifications = null;
this.retries = null;
this.retriesSubscription = null;
_super.prototype._unsubscribeAndRecycle.call(this);
this.notifications = notifications;
this.retries = retries;
this.retriesSubscription = retriesSubscription;
return this;
};
RepeatWhenSubscriber.prototype.subscribeToRetries = function () {
this.notifications = new Subject_1.Subject();
var retries = tryCatch_1.tryCatch(this.notifier)(this.notifications);
if (retries === errorObject_1.errorObject) {
return _super.prototype.complete.call(this);
}
this.retries = retries;
this.retriesSubscription = subscribeToResult_1.subscribeToResult(this, retries);
};
return RepeatWhenSubscriber;
}(OuterSubscriber_1.OuterSubscriber));
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