@reactivex/rxjs
Version:
Reactive Extensions for modern JavaScript
152 lines • 6.63 kB
JavaScript
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 __());
};
define(["require", "exports", '../Subscriber', '../Observable', '../OuterSubscriber', '../util/subscribeToResult'], function (require, exports, Subscriber_1, Observable_1, OuterSubscriber_1, subscribeToResult_1) {
"use strict";
/**
* Returns an Observable that delays the emission of items from the source Observable
* by a subscription delay and a delay selector function for each element.
* @param {Function} selector function to retrieve a sequence indicating the delay for each given element.
* @param {Observable} sequence indicating the delay for the subscription to the source.
* @return {Observable} an Observable that delays the emissions of the source Observable by the specified timeout or Date.
* @method delayWhen
* @owner Observable
*/
function delayWhen(delayDurationSelector, subscriptionDelay) {
if (subscriptionDelay) {
return new SubscriptionDelayObservable(this, subscriptionDelay)
.lift(new DelayWhenOperator(delayDurationSelector));
}
return this.lift(new DelayWhenOperator(delayDurationSelector));
}
exports.delayWhen = delayWhen;
var DelayWhenOperator = (function () {
function DelayWhenOperator(delayDurationSelector) {
this.delayDurationSelector = delayDurationSelector;
}
DelayWhenOperator.prototype.call = function (subscriber, source) {
return source._subscribe(new DelayWhenSubscriber(subscriber, this.delayDurationSelector));
};
return DelayWhenOperator;
}());
/**
* We need this JSDoc comment for affecting ESDoc.
* @ignore
* @extends {Ignored}
*/
var DelayWhenSubscriber = (function (_super) {
__extends(DelayWhenSubscriber, _super);
function DelayWhenSubscriber(destination, delayDurationSelector) {
_super.call(this, destination);
this.delayDurationSelector = delayDurationSelector;
this.completed = false;
this.delayNotifierSubscriptions = [];
this.values = [];
}
DelayWhenSubscriber.prototype.notifyNext = function (outerValue, innerValue, outerIndex, innerIndex, innerSub) {
this.destination.next(outerValue);
this.removeSubscription(innerSub);
this.tryComplete();
};
DelayWhenSubscriber.prototype.notifyError = function (error, innerSub) {
this._error(error);
};
DelayWhenSubscriber.prototype.notifyComplete = function (innerSub) {
var value = this.removeSubscription(innerSub);
if (value) {
this.destination.next(value);
}
this.tryComplete();
};
DelayWhenSubscriber.prototype._next = function (value) {
try {
var delayNotifier = this.delayDurationSelector(value);
if (delayNotifier) {
this.tryDelay(delayNotifier, value);
}
}
catch (err) {
this.destination.error(err);
}
};
DelayWhenSubscriber.prototype._complete = function () {
this.completed = true;
this.tryComplete();
};
DelayWhenSubscriber.prototype.removeSubscription = function (subscription) {
subscription.unsubscribe();
var subscriptionIdx = this.delayNotifierSubscriptions.indexOf(subscription);
var value = null;
if (subscriptionIdx !== -1) {
value = this.values[subscriptionIdx];
this.delayNotifierSubscriptions.splice(subscriptionIdx, 1);
this.values.splice(subscriptionIdx, 1);
}
return value;
};
DelayWhenSubscriber.prototype.tryDelay = function (delayNotifier, value) {
var notifierSubscription = subscribeToResult_1.subscribeToResult(this, delayNotifier, value);
this.add(notifierSubscription);
this.delayNotifierSubscriptions.push(notifierSubscription);
this.values.push(value);
};
DelayWhenSubscriber.prototype.tryComplete = function () {
if (this.completed && this.delayNotifierSubscriptions.length === 0) {
this.destination.complete();
}
};
return DelayWhenSubscriber;
}(OuterSubscriber_1.OuterSubscriber));
/**
* We need this JSDoc comment for affecting ESDoc.
* @ignore
* @extends {Ignored}
*/
var SubscriptionDelayObservable = (function (_super) {
__extends(SubscriptionDelayObservable, _super);
function SubscriptionDelayObservable(source, subscriptionDelay) {
_super.call(this);
this.source = source;
this.subscriptionDelay = subscriptionDelay;
}
SubscriptionDelayObservable.prototype._subscribe = function (subscriber) {
this.subscriptionDelay.subscribe(new SubscriptionDelaySubscriber(subscriber, this.source));
};
return SubscriptionDelayObservable;
}(Observable_1.Observable));
/**
* We need this JSDoc comment for affecting ESDoc.
* @ignore
* @extends {Ignored}
*/
var SubscriptionDelaySubscriber = (function (_super) {
__extends(SubscriptionDelaySubscriber, _super);
function SubscriptionDelaySubscriber(parent, source) {
_super.call(this);
this.parent = parent;
this.source = source;
this.sourceSubscribed = false;
}
SubscriptionDelaySubscriber.prototype._next = function (unused) {
this.subscribeToSource();
};
SubscriptionDelaySubscriber.prototype._error = function (err) {
this.unsubscribe();
this.parent.error(err);
};
SubscriptionDelaySubscriber.prototype._complete = function () {
this.subscribeToSource();
};
SubscriptionDelaySubscriber.prototype.subscribeToSource = function () {
if (!this.sourceSubscribed) {
this.sourceSubscribed = true;
this.unsubscribe();
this.source.subscribe(this.parent);
}
};
return SubscriptionDelaySubscriber;
}(Subscriber_1.Subscriber));
});
//# sourceMappingURL=delayWhen.js.map