Notification.js

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
var empty_1 = require("./observable/empty");
var of_1 = require("./observable/of");
var throwError_1 = require("./observable/throwError");
var NotificationKind;
(function (NotificationKind) {
    NotificationKind["NEXT"] = "N";
    NotificationKind["ERROR"] = "E";
    NotificationKind["COMPLETE"] = "C";
})(NotificationKind = exports.NotificationKind || (exports.NotificationKind = {}));
var Notification = (function () {
    function Notification(kind, value, error) {
        this.kind = kind;
        this.value = value;
        this.error = error;
        this.hasValue = kind === 'N';
    }
    Notification.prototype.observe = function (observer) {
        switch (this.kind) {
            case 'N':
                return observer.next && observer.next(this.value);
            case 'E':
                return observer.error && observer.error(this.error);
            case 'C':
                return observer.complete && observer.complete();
        }
    };
    Notification.prototype.do = function (next, error, complete) {
        var kind = this.kind;
        switch (kind) {
            case 'N':
                return next && next(this.value);
            case 'E':
                return error && error(this.error);
            case 'C':
                return complete && complete();
        }
    };
    Notification.prototype.accept = function (nextOrObserver, error, complete) {
        if (nextOrObserver && typeof nextOrObserver.next === 'function') {
            return this.observe(nextOrObserver);
        }
        else {
            return this.do(nextOrObserver, error, complete);
        }
    };
    Notification.prototype.toObservable = function () {
        var kind = this.kind;
        switch (kind) {
            case 'N':
                return of_1.of(this.value);
            case 'E':
                return throwError_1.throwError(this.error);
            case 'C':
                return empty_1.empty();
        }
        throw new Error('unexpected notification kind value');
    };
    Notification.createNext = function (value) {
        if (typeof value !== 'undefined') {
            return new Notification('N', value);
        }
        return Notification.undefinedValueNotification;
    };
    Notification.createError = function (err) {
        return new Notification('E', undefined, err);
    };
    Notification.createComplete = function () {
        return Notification.completeNotification;
    };
    Notification.completeNotification = new Notification('C');
    Notification.undefinedValueNotification = new Notification('N', undefined);
    return Notification;
}());
exports.Notification = Notification;
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