summaryrefslogtreecommitdiffstats
path: root/testing/web-platform/tests/appmanifest/display-override-member/display-override-member-media-feature-service-worker.js
blob: 02818dc6650f78cc388872ffb47cb0d3d3e143af (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
// Some user agents only offer app installation if there is a SW and it handles
// offline requests.

const cacheVersion = "1.2";
const CACHE_NAME = `cache-v${cacheVersion}`;

// The resources cached by this service worker.
const resources = [
  "display-override-member-app-region-window-controls-overlay-manual.tentative.html",
  "display-override-member-css-environment-variables-window-controls-overlay-manual.tentative.html",
  "display-override-member-media-feature-browser-manual.tentative.html",
  "display-override-member-media-feature-fullscreen-manual.tentative.html",
  "display-override-member-media-feature-minimal-ui-manual.tentative.html",
  "display-override-member-media-feature-standalone-manual.tentative.html",
  "display-override-member-media-feature-standalone-overrides-browser-manual.tentative.html",
  "display-override-member-media-feature-window-controls-overlay-overrides-browser-manual.tentative.html",
  "display-override-member-media-feature-service-worker.js",
  "resources/display-override-member-media-feature-manual.js",
  "resources/icon.png",
];

// Load all resources for this service worker.
const precache = async () => {
  const cache = await caches.open(CACHE_NAME);
  await cache.addAll(resources);
};

// Get a resource from the cache.
const fromCache = async request => {
  const cache = await caches.open(CACHE_NAME);
  return await cache.match(request.url);
};

// Attempt to get resources from the network first, fallback to the cache if we're
// offline.
const networkFallbackToCache = async request => {
  try {
    const response = await fetch(request);
    if (response.ok) return response;
  } catch (err) {}
  return await fromCache(request);
};

// When we have a new service worker, update the caches and swap immediately.
self.addEventListener("install", e => {
  e.waitUntil(precache().then(() => self.skipWaiting()));
});

// Claim existing clients.
self.addEventListener("activate", e => {
  e.waitUntil(self.clients.claim());
});

// When a resource need to be fetched, check whether it is
// contained in the cache and return the cached version, otherwise
// get it from the network.
self.addEventListener("fetch", e => {
  e.respondWith(networkFallbackToCache(e.request));
});