filebrowser/build/service-worker-prod.js

56 lines
2.3 KiB
JavaScript
Raw Normal View History

2018-02-01 12:17:04 +00:00
(function() {
'use strict';
// Check to make sure service workers are supported in the current browser,
// and that the current page is accessed from a secure origin. Using a
// service worker from an insecure origin will trigger JS console errors.
2018-02-24 17:29:45 +00:00
var isLocalhost = Boolean(window.location.hostname === 'localhost' ||
2018-02-01 12:17:04 +00:00
// [::1] is the IPv6 localhost address.
window.location.hostname === '[::1]' ||
// 127.0.0.1/8 is considered localhost for IPv4.
window.location.hostname.match(
/^127(?:\.(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)){3}$/
)
);
window.addEventListener('load', function() {
if ('serviceWorker' in navigator &&
(window.location.protocol === 'https:' || isLocalhost)) {
navigator.serviceWorker.register('{{ .BaseURL }}/sw.js')
.then(function(registration) {
// updatefound is fired if service-worker.js changes.
registration.onupdatefound = function() {
// updatefound is also fired the very first time the SW is installed,
// and there's no need to prompt for a reload at that point.
// So check here to see if the page is already controlled,
// i.e. whether there's an existing service worker.
if (navigator.serviceWorker.controller) {
// The updatefound event implies that registration.installing is set
2018-02-24 17:29:45 +00:00
var installingWorker = registration.installing;
2018-02-01 12:17:04 +00:00
installingWorker.onstatechange = function() {
switch (installingWorker.state) {
case 'installed':
// At this point, the old content will have been purged and the
// fresh content will have been added to the cache.
// It's the perfect time to display a "New content is
// available; please refresh." message in the page's interface.
break;
case 'redundant':
throw new Error('The installing ' +
'service worker became redundant.');
default:
// Ignore
}
};
}
};
}).catch(function(e) {
console.error('Error during service worker registration:', e);
});
}
});
})();