94 lines
3.4 KiB
JavaScript
94 lines
3.4 KiB
JavaScript
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/** PURE_IMPORTS_START tslib,_scheduler_async,_util_isDate,_Subscriber,_Notification PURE_IMPORTS_END */
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import * as tslib_1 from "tslib";
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import { async } from '../scheduler/async';
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import { isDate } from '../util/isDate';
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import { Subscriber } from '../Subscriber';
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import { Notification } from '../Notification';
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export function delay(delay, scheduler) {
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if (scheduler === void 0) {
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scheduler = async;
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}
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var absoluteDelay = isDate(delay);
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var delayFor = absoluteDelay ? (+delay - scheduler.now()) : Math.abs(delay);
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return function (source) { return source.lift(new DelayOperator(delayFor, scheduler)); };
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}
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var DelayOperator = /*@__PURE__*/ (function () {
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function DelayOperator(delay, scheduler) {
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this.delay = delay;
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this.scheduler = scheduler;
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}
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DelayOperator.prototype.call = function (subscriber, source) {
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return source.subscribe(new DelaySubscriber(subscriber, this.delay, this.scheduler));
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};
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return DelayOperator;
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}());
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var DelaySubscriber = /*@__PURE__*/ (function (_super) {
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tslib_1.__extends(DelaySubscriber, _super);
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function DelaySubscriber(destination, delay, scheduler) {
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var _this = _super.call(this, destination) || this;
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_this.delay = delay;
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_this.scheduler = scheduler;
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_this.queue = [];
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_this.active = false;
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_this.errored = false;
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return _this;
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}
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DelaySubscriber.dispatch = function (state) {
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var source = state.source;
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var queue = source.queue;
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var scheduler = state.scheduler;
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var destination = state.destination;
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while (queue.length > 0 && (queue[0].time - scheduler.now()) <= 0) {
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queue.shift().notification.observe(destination);
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}
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if (queue.length > 0) {
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var delay_1 = Math.max(0, queue[0].time - scheduler.now());
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this.schedule(state, delay_1);
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}
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else {
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this.unsubscribe();
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source.active = false;
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}
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};
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DelaySubscriber.prototype._schedule = function (scheduler) {
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this.active = true;
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var destination = this.destination;
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destination.add(scheduler.schedule(DelaySubscriber.dispatch, this.delay, {
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source: this, destination: this.destination, scheduler: scheduler
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}));
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};
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DelaySubscriber.prototype.scheduleNotification = function (notification) {
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if (this.errored === true) {
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return;
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}
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var scheduler = this.scheduler;
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var message = new DelayMessage(scheduler.now() + this.delay, notification);
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this.queue.push(message);
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if (this.active === false) {
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this._schedule(scheduler);
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}
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};
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DelaySubscriber.prototype._next = function (value) {
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this.scheduleNotification(Notification.createNext(value));
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};
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DelaySubscriber.prototype._error = function (err) {
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this.errored = true;
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this.queue = [];
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this.destination.error(err);
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this.unsubscribe();
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};
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DelaySubscriber.prototype._complete = function () {
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this.scheduleNotification(Notification.createComplete());
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this.unsubscribe();
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};
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return DelaySubscriber;
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}(Subscriber));
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var DelayMessage = /*@__PURE__*/ (function () {
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function DelayMessage(time, notification) {
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this.time = time;
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this.notification = notification;
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}
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return DelayMessage;
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}());
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//# sourceMappingURL=delay.js.map
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