/
loadBlob.js
41 lines (39 loc) · 1.35 KB
/
loadBlob.js
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/*global define*/
define([
'./loadWithXhr'
], function(
loadWithXhr) {
'use strict';
/**
* Asynchronously loads the given URL as a blob. Returns a promise that will resolve to
* a Blob once loaded, or reject if the URL failed to load. The data is loaded
* using XMLHttpRequest, which means that in order to make requests to another origin,
* the server must have Cross-Origin Resource Sharing (CORS) headers enabled.
*
* @exports loadBlob
*
* @param {String|Promise.<String>} url The URL of the data, or a promise for the URL.
* @param {Object} [headers] HTTP headers to send with the requests.
* @returns {Promise.<Blob>} a promise that will resolve to the requested data when loaded.
*
*
* @example
* // load a single URL asynchronously
* Cesium.loadBlob('some/url').then(function(blob) {
* // use the data
* }).otherwise(function(error) {
* // an error occurred
* });
*
* @see {@link http://www.w3.org/TR/cors/|Cross-Origin Resource Sharing}
* @see {@link http://wiki.commonjs.org/wiki/Promises/A|CommonJS Promises/A}
*/
function loadBlob(url, headers) {
return loadWithXhr({
url : url,
responseType : 'blob',
headers : headers
});
}
return loadBlob;
});