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livetrax/share/web_surfaces/shared/metadata.js

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JavaScript
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/*
* Copyright © 2020 Luciano Iam <lucianito@gmail.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
// Surface metadata API over HTTP
export class MetadataMixin {
async getAvailableSurfaces () {
const response = await fetch('/surfaces.json');
if (response.status == 200) {
return await response.json();
} else {
throw this._fetchResponseStatusError(response.status);
}
}
async getSurfaceManifest () {
const response = await fetch('manifest.xml');
if (response.status == 200) {
const manifest = {};
const xmlText = await response.text();
const xmlDoc = new DOMParser().parseFromString(xmlText, 'text/xml');
for (const child of xmlDoc.children[0].children) {
manifest[child.tagName.toLowerCase()] = child.getAttribute('value');
}
return manifest;
} else {
throw this._fetchResponseStatusError(response.status);
}
}
}