54 lines
1.6 KiB
TypeScript
54 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 {ResourceLoader} from '@angular/compiler';
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import {Injectable} from '@angular/core';
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@Injectable()
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export class ResourceLoaderImpl extends ResourceLoader {
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get(url: string): Promise<string> {
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let resolve: (result: any) => void;
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let reject: (error: any) => void;
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const promise = new Promise<string>((res, rej) => {
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resolve = res;
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reject = rej;
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});
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const 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 ResourceLoader Level2 spec (supported
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// by IE10)
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const response = xhr.response || xhr.responseText;
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// normalize IE9 bug (http://bugs.jquery.com/ticket/1450)
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let 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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resolve(response);
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} else {
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reject(`Failed to load ${url}`);
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}
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};
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xhr.onerror = function() { reject(`Failed to load ${url}`); };
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xhr.send();
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return promise;
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}
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}
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