92 lines
3.5 KiB
JavaScript
92 lines
3.5 KiB
JavaScript
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"use strict";
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var __extends = (this && this.__extends) || function (d, b) {
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for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p];
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function __() { this.constructor = d; }
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d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
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};
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var root_1 = require('../util/root');
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var Observable_1 = require('../Observable');
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var PromiseObservable = (function (_super) {
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__extends(PromiseObservable, _super);
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function PromiseObservable(promise, scheduler) {
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if (scheduler === void 0) { scheduler = null; }
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_super.call(this);
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this.promise = promise;
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this.scheduler = scheduler;
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}
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PromiseObservable.create = function (promise, scheduler) {
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if (scheduler === void 0) { scheduler = null; }
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return new PromiseObservable(promise, scheduler);
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};
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PromiseObservable.prototype._subscribe = function (subscriber) {
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var _this = this;
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var promise = this.promise;
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var scheduler = this.scheduler;
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if (scheduler == null) {
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if (this._isScalar) {
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if (!subscriber.isUnsubscribed) {
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subscriber.next(this.value);
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subscriber.complete();
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}
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}
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else {
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promise.then(function (value) {
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_this.value = value;
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_this._isScalar = true;
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if (!subscriber.isUnsubscribed) {
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subscriber.next(value);
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subscriber.complete();
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}
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}, function (err) {
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if (!subscriber.isUnsubscribed) {
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subscriber.error(err);
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}
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})
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.then(null, function (err) {
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// escape the promise trap, throw unhandled errors
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root_1.root.setTimeout(function () { throw err; });
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});
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}
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}
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else {
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if (this._isScalar) {
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if (!subscriber.isUnsubscribed) {
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return scheduler.schedule(dispatchNext, 0, { value: this.value, subscriber: subscriber });
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}
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}
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else {
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promise.then(function (value) {
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_this.value = value;
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_this._isScalar = true;
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if (!subscriber.isUnsubscribed) {
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subscriber.add(scheduler.schedule(dispatchNext, 0, { value: value, subscriber: subscriber }));
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}
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}, function (err) {
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if (!subscriber.isUnsubscribed) {
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subscriber.add(scheduler.schedule(dispatchError, 0, { err: err, subscriber: subscriber }));
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}
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})
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.then(null, function (err) {
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// escape the promise trap, throw unhandled errors
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root_1.root.setTimeout(function () { throw err; });
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});
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}
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}
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};
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return PromiseObservable;
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}(Observable_1.Observable));
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exports.PromiseObservable = PromiseObservable;
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function dispatchNext(_a) {
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var value = _a.value, subscriber = _a.subscriber;
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if (!subscriber.isUnsubscribed) {
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subscriber.next(value);
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subscriber.complete();
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}
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}
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function dispatchError(_a) {
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var err = _a.err, subscriber = _a.subscriber;
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if (!subscriber.isUnsubscribed) {
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subscriber.error(err);
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}
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}
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//# sourceMappingURL=PromiseObservable.js.map
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