web/_javascript/pwa/app.js

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JavaScript
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/* PWA loader */
if ('serviceWorker' in navigator) {
const meta = document.querySelector('meta[name="pwa-cache"]');
const isEnabled = meta.content === 'true';
if (isEnabled) {
let swUrl = '/sw.min.js';
const baseUrl = meta.getAttribute('data-baseurl');
if (baseUrl !== null) {
swUrl = `${baseUrl}${swUrl}?baseurl=${encodeURIComponent(baseUrl)}`;
}
const $notification = $('#notification');
const $btnRefresh = $('#notification .toast-body>button');
navigator.serviceWorker.register(swUrl).then((registration) => {
// In case the user ignores the notification
if (registration.waiting) {
$notification.toast('show');
}
registration.addEventListener('updatefound', () => {
registration.installing.addEventListener('statechange', () => {
if (registration.waiting) {
if (navigator.serviceWorker.controller) {
$notification.toast('show');
}
}
});
});
$btnRefresh.on('click', () => {
if (registration.waiting) {
registration.waiting.postMessage('SKIP_WAITING');
}
$notification.toast('hide');
});
});
let refreshing = false;
// Detect controller change and refresh all the opened tabs
navigator.serviceWorker.addEventListener('controllerchange', () => {
if (!refreshing) {
window.location.reload();
refreshing = true;
}
});
} else {
navigator.serviceWorker.getRegistrations().then(function (registrations) {
for (let registration of registrations) {
registration.unregister();
}
});
}
}