AsyncSubject.js

"use strict";
var __extends = (this && this.__extends) || (function () {
    var extendStatics = function (d, b) {
        extendStatics = Object.setPrototypeOf ||
            ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||
            function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; };
        return extendStatics(d, b);
    }
    return function (d, b) {
        extendStatics(d, b);
        function __() { this.constructor = d; }
        d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
    };
})();
Object.defineProperty(exports, "__esModule", { value: true });
var Subject_1 = require("./Subject");
var Subscription_1 = require("./Subscription");
var AsyncSubject = (function (_super) {
    __extends(AsyncSubject, _super);
    function AsyncSubject() {
        var _this = _super !== null && _super.apply(this, arguments) || this;
        _this.value = null;
        _this.hasNext = false;
        _this.hasCompleted = false;
        return _this;
    }
    AsyncSubject.prototype._subscribe = function (subscriber) {
        if (this.hasError) {
            subscriber.error(this.thrownError);
            return Subscription_1.Subscription.EMPTY;
        }
        else if (this.hasCompleted && this.hasNext) {
            subscriber.next(this.value);
            subscriber.complete();
            return Subscription_1.Subscription.EMPTY;
        }
        return _super.prototype._subscribe.call(this, subscriber);
    };
    AsyncSubject.prototype.next = function (value) {
        if (!this.hasCompleted) {
            this.value = value;
            this.hasNext = true;
        }
    };
    AsyncSubject.prototype.error = function (error) {
        if (!this.hasCompleted) {
            _super.prototype.error.call(this, error);
        }
    };
    AsyncSubject.prototype.complete = function () {
        this.hasCompleted = true;
        if (this.hasNext) {
            _super.prototype.next.call(this, this.value);
        }
        _super.prototype.complete.call(this);
    };
    return AsyncSubject;
}(Subject_1.Subject));
exports.AsyncSubject = AsyncSubject;
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