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livetrax/share/web_surfaces/builtin/mixer/js/tkloader.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.
*/
// This is a convenience module for loading the 'toolkit' audio widget library
// https://github.com/DeutscheSoft/toolkit
// GPLv3 license, docs at http://docs.deuso.de/Toolkit/
const STYLES = [];
const SCRIPTS = [
'G',
'toolkit',
'implements/audiomath',
'implements/base',
'implements/anchor',
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'implements/globalcursor',
'implements/ranged',
'implements/gradient',
'implements/warning',
'widgets/widget',
'modules/circular',
'modules/dragcapture',
'modules/dragvalue',
'modules/range',
'modules/scale',
'modules/scrollvalue',
'widgets/icon',
'widgets/label',
'widgets/button',
'widgets/container',
'widgets/dialog',
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'widgets/meterbase',
'widgets/state',
'widgets/toggle',
'widgets/levelmeter',
'widgets/value',
'widgets/fader',
'widgets/knob',
'widgets/root'
];
export default async function loadToolkit() {
const tkPath = '../toolkit';
// stylesheets can be loaded in parallel
const p = STYLES.map((style) => loadStylesheet(import.meta, `${tkPath}/styles/${style}.css`));
await Promise.all(p);
// scripts need to be loaded sequentially
for (const script of SCRIPTS) {
await loadScript(import.meta, `${tkPath}/${script}.js`);
}
}
async function loadStylesheet(importMeta, path) {
return new Promise((resolve, reject) => {
const link = document.createElement('link');
link.rel = 'stylesheet';
link.type = 'text/css';
link.href = `${getModuleBasename(importMeta)}/${path}`;
link.addEventListener('error', (ev) => reject(Error('Stylesheet failed to load')));
link.addEventListener('load', resolve);
document.head.appendChild(link);
});
}
async function loadScript(importMeta, path) {
return new Promise((resolve, reject) => {
const script = document.createElement('script');
script.src = `${getModuleBasename(importMeta)}/${path}`;
script.addEventListener('error', (ev) => reject(Error('Script failed to load')));
script.addEventListener('load', resolve);
document.body.appendChild(script);
});
}
function getModuleBasename(importMeta) {
return importMeta.url.substring(0, importMeta.url.lastIndexOf('/'));
}