rxjs/operator/timeout.js

Reactive Extensions for modern 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 async_1 = require('../scheduler/async');
var isDate_1 = require('../util/isDate');
var Subscriber_1 = require('../Subscriber');
var TimeoutError_1 = require('../util/TimeoutError');
/**
 * @param {number} due
 * @param {Scheduler} [scheduler]
 * @return {Observable<R>|WebSocketSubject<T>|Observable<T>}
 * @method timeout
 * @owner Observable
 */
function timeout(due, scheduler) {
    if (scheduler === void 0) { scheduler = async_1.async; }
    var absoluteTimeout = isDate_1.isDate(due);
    var waitFor = absoluteTimeout ? (+due - scheduler.now()) : Math.abs(due);
    return this.lift(new TimeoutOperator(waitFor, absoluteTimeout, scheduler, new TimeoutError_1.TimeoutError()));
}
exports.timeout = timeout;
var TimeoutOperator = (function () {
    function TimeoutOperator(waitFor, absoluteTimeout, scheduler, errorInstance) {
        this.waitFor = waitFor;
        this.absoluteTimeout = absoluteTimeout;
        this.scheduler = scheduler;
        this.errorInstance = errorInstance;
    }
    TimeoutOperator.prototype.call = function (subscriber, source) {
        return source.subscribe(new TimeoutSubscriber(subscriber, this.absoluteTimeout, this.waitFor, this.scheduler, this.errorInstance));
    };
    return TimeoutOperator;
}());
/**
 * We need this JSDoc comment for affecting ESDoc.
 * @ignore
 * @extends {Ignored}
 */
var TimeoutSubscriber = (function (_super) {
    __extends(TimeoutSubscriber, _super);
    function TimeoutSubscriber(destination, absoluteTimeout, waitFor, scheduler, errorInstance) {
        _super.call(this, destination);
        this.absoluteTimeout = absoluteTimeout;
        this.waitFor = waitFor;
        this.scheduler = scheduler;
        this.errorInstance = errorInstance;
        this.action = null;
        this.scheduleTimeout();
    }
    TimeoutSubscriber.dispatchTimeout = function (subscriber) {
        subscriber.error(subscriber.errorInstance);
    };
    TimeoutSubscriber.prototype.scheduleTimeout = function () {
        var action = this.action;
        if (action) {
            // Recycle the action if we've already scheduled one. All the production
            // Scheduler Actions mutate their state/delay time and return themeselves.
            // VirtualActions are immutable, so they create and return a clone. In this
            // case, we need to set the action reference to the most recent VirtualAction,
            // to ensure that's the one we clone from next time.
            this.action = action.schedule(this, this.waitFor);
        }
        else {
            this.add(this.action = this.scheduler.schedule(TimeoutSubscriber.dispatchTimeout, this.waitFor, this));
        }
    };
    TimeoutSubscriber.prototype._next = function (value) {
        if (!this.absoluteTimeout) {
            this.scheduleTimeout();
        }
        _super.prototype._next.call(this, value);
    };
    TimeoutSubscriber.prototype._unsubscribe = function () {
        this.action = null;
        this.scheduler = null;
        this.errorInstance = null;
    };
    return TimeoutSubscriber;
}(Subscriber_1.Subscriber));
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