50 lines
1.6 KiB
TypeScript
50 lines
1.6 KiB
TypeScript
/**
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* @license
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* Copyright Google Inc. All Rights Reserved.
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*
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* Use of this source code is governed by an MIT-style license that can be
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* found in the LICENSE file at https://angular.io/license
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*/
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import {XHR} from '@angular/compiler';
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import {Injectable} from '@angular/core';
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import {isPresent} from '../facade/lang';
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import {PromiseCompleter, PromiseWrapper} from '../facade/promise';
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@Injectable()
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export class XHRImpl extends XHR {
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get(url: string): Promise<string> {
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var completer: PromiseCompleter<string> = PromiseWrapper.completer();
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var xhr = new XMLHttpRequest();
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xhr.open('GET', url, true);
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xhr.responseType = 'text';
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xhr.onload = function() {
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// responseText is the old-school way of retrieving response (supported by IE8 & 9)
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// response/responseType properties were introduced in XHR Level2 spec (supported by IE10)
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var response = isPresent(xhr.response) ? xhr.response : xhr.responseText;
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// normalize IE9 bug (http://bugs.jquery.com/ticket/1450)
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var status = xhr.status === 1223 ? 204 : xhr.status;
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// fix status code when it is 0 (0 status is undocumented).
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// Occurs when accessing file resources or on Android 4.1 stock browser
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// while retrieving files from application cache.
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if (status === 0) {
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status = response ? 200 : 0;
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}
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if (200 <= status && status <= 300) {
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completer.resolve(response);
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} else {
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completer.reject(`Failed to load ${url}`, null);
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}
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};
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xhr.onerror = function() { completer.reject(`Failed to load ${url}`, null); };
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xhr.send();
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return completer.promise;
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}
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}
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