| <!doctype html> |
| <html> |
| <head> |
| <meta charset="utf-8" /> |
| <title>ServiceWorkerFencedFrameBrowserTest helper page</title> |
| <script> |
| async function RegisterServiceWorker() { |
| await navigator.serviceWorker.register('fenced_frame_service_worker.js'); |
| return 'ok - service worker registered'; |
| } |
| |
| async function backgroundFetchFromServiceWorker() { |
| const controllerChangePromise = new Promise(resolve => { |
| if (navigator.serviceWorker.controller) { |
| resolve(); |
| return; |
| } |
| navigator.serviceWorker.addEventListener('controllerchange', resolve); |
| }); |
| const sendMessageToServiceWorker = () => { |
| const ctrl = navigator.serviceWorker.controller; |
| return new Promise(resolve => { |
| ctrl.postMessage({ |
| type: 'fetch', |
| id: 'bg-feth-id', |
| resource: [ '/service_worker/hello-from-sw.txt' ], |
| options: { title: 'Background Fetch' } |
| }); |
| navigator.serviceWorker.onmessage = e => { |
| resolve(e.data); |
| }; |
| }); |
| }; |
| |
| await controllerChangePromise; |
| const data = await sendMessageToServiceWorker() |
| |
| return data; |
| } |
| </script> |
| </head> |
| <body> |
| </body> |
| </html> |
