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/*
* @copyright Copyright (c) 2018 Julius Härtl <jus@bitgrid.net>
*
* @author Julius Härtl <jus@bitgrid.net>
*
* @license GNU AGPL version 3 or any later version
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
let loadedScripts = {};
let loadedStylesheets = {};
/**
* @namespace OCP
* @class Loader
*/
export default {
/**
* Load a script asynchronously
*
* @param {string} app
* @param {string} file
* @returns {Promise}
*/
loadScript: function(app, file) {
const key = app + file;
if (loadedScripts.hasOwnProperty(key)) {
return Promise.resolve();
}
loadedScripts[key] = true;
return new Promise(function (resolve, reject) {
var scriptPath = OC.filePath(app, 'js', file);
var script = document.createElement('script');
script.src = scriptPath;
script.setAttribute('nonce', btoa(OC.requestToken));
script.onload = () => resolve();
script.onerror = () => reject(`Failed to load script from ${scriptPath}`);
document.head.appendChild(script);
});
},
/**
* Load a stylesheet file asynchronously
*
* @param {string} app
* @param {string} file
* @returns {Promise}
*/
loadStylesheet: function(app, file) {
const key = app + file;
if (loadedStylesheets.hasOwnProperty(key)) {
return Promise.resolve();
}
loadedStylesheets[key] = true;
return new Promise(function (resolve, reject) {
var stylePath = OC.filePath(app, 'css', file);
var link = document.createElement('link');
link.href = stylePath;
link.type = 'text/css';
link.rel = 'stylesheet';
link.onload = () => resolve();
link.onerror = () => reject(`Failed to load stylesheet from ${stylePath}`);
document.head.appendChild(link);
});
},
}
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