204 lines
7.9 KiB
JavaScript
204 lines
7.9 KiB
JavaScript
'use strict';
|
|
const MANIFEST = 'flutter-app-manifest';
|
|
const TEMP = 'flutter-temp-cache';
|
|
const CACHE_NAME = 'flutter-app-cache';
|
|
|
|
const RESOURCES = {"assets/assets/plate.png": "89fc6540c9fa9a6b95e921d105f9314d",
|
|
"assets/fonts/MaterialIcons-Regular.otf": "c439a80a2a2dd8cb0f794cd3b505ae93",
|
|
"assets/AssetManifest.json": "9ff44bde92ce5b382a52a9273b1e50a7",
|
|
"assets/packages/cupertino_icons/assets/CupertinoIcons.ttf": "89ed8f4e49bcdfc0b5bfc9b24591e347",
|
|
"assets/shaders/ink_sparkle.frag": "f8b80e740d33eb157090be4e995febdf",
|
|
"assets/AssetManifest.bin": "51a3997f7d127f11e8d4740f23792d5a",
|
|
"assets/FontManifest.json": "dc3d03800ccca4601324923c0b1d6d57",
|
|
"assets/NOTICES": "2284881b9da9b594ef69159349e2f279",
|
|
"version.json": "d7fbd41faace5a7a02bb5da13e6049ec",
|
|
"favicon.ico": "f636204ccad9374ce9047423413c6d2e",
|
|
"manifest.json": "afd226ab6e25f82439d85dcf9262338e",
|
|
"index.html": "9af84a80b09c83c144c0a81067b85a94",
|
|
"/": "9af84a80b09c83c144c0a81067b85a94",
|
|
"flutter.js": "6fef97aeca90b426343ba6c5c9dc5d4a",
|
|
"icons/android-chrome-512x512.png": "3c5fb92485b3737401099b1193e94001",
|
|
"icons/favicon-32x32.png": "9c90e886fef86874dad704dc4b37f8a5",
|
|
"icons/android-chrome-192x192.png": "80d142675305ba3cdf3bafacf172ec21",
|
|
"icons/apple-touch-icon.png": "03d54bae9bfc7c6bea8bc596d1c441e7",
|
|
"icons/favicon-96x96.png": "ff924a53b1eb62b512264433643a72f0",
|
|
"icons/favicon-16x16.png": "ad35e12ce84a4abac20afb61795a90d6",
|
|
"icons/safari-pinned-tab.svg": "6ecc28ad3037a300978a2927b7fb3d1c",
|
|
"main.dart.js": "7ecefa21850a971fce622974e78c656f",
|
|
"canvaskit/canvaskit.wasm": "d9f69e0f428f695dc3d66b3a83a4aa8e",
|
|
"canvaskit/skwasm.wasm": "d1fde2560be92c0b07ad9cf9acb10d05",
|
|
"canvaskit/canvaskit.js": "5caccb235fad20e9b72ea6da5a0094e6",
|
|
"canvaskit/skwasm.worker.js": "51253d3321b11ddb8d73fa8aa87d3b15",
|
|
"canvaskit/chromium/canvaskit.wasm": "393ec8fb05d94036734f8104fa550a67",
|
|
"canvaskit/chromium/canvaskit.js": "ffb2bb6484d5689d91f393b60664d530",
|
|
"canvaskit/skwasm.js": "95f16c6690f955a45b2317496983dbe9"};
|
|
// The application shell files that are downloaded before a service worker can
|
|
// start.
|
|
const CORE = ["main.dart.js",
|
|
"index.html",
|
|
"assets/AssetManifest.json",
|
|
"assets/FontManifest.json"];
|
|
|
|
// During install, the TEMP cache is populated with the application shell files.
|
|
self.addEventListener("install", (event) => {
|
|
self.skipWaiting();
|
|
return event.waitUntil(
|
|
caches.open(TEMP).then((cache) => {
|
|
return cache.addAll(
|
|
CORE.map((value) => new Request(value, {'cache': 'reload'})));
|
|
})
|
|
);
|
|
});
|
|
// During activate, the cache is populated with the temp files downloaded in
|
|
// install. If this service worker is upgrading from one with a saved
|
|
// MANIFEST, then use this to retain unchanged resource files.
|
|
self.addEventListener("activate", function(event) {
|
|
return event.waitUntil(async function() {
|
|
try {
|
|
var contentCache = await caches.open(CACHE_NAME);
|
|
var tempCache = await caches.open(TEMP);
|
|
var manifestCache = await caches.open(MANIFEST);
|
|
var manifest = await manifestCache.match('manifest');
|
|
// When there is no prior manifest, clear the entire cache.
|
|
if (!manifest) {
|
|
await caches.delete(CACHE_NAME);
|
|
contentCache = await caches.open(CACHE_NAME);
|
|
for (var request of await tempCache.keys()) {
|
|
var response = await tempCache.match(request);
|
|
await contentCache.put(request, response);
|
|
}
|
|
await caches.delete(TEMP);
|
|
// Save the manifest to make future upgrades efficient.
|
|
await manifestCache.put('manifest', new Response(JSON.stringify(RESOURCES)));
|
|
// Claim client to enable caching on first launch
|
|
self.clients.claim();
|
|
return;
|
|
}
|
|
var oldManifest = await manifest.json();
|
|
var origin = self.location.origin;
|
|
for (var request of await contentCache.keys()) {
|
|
var key = request.url.substring(origin.length + 1);
|
|
if (key == "") {
|
|
key = "/";
|
|
}
|
|
// If a resource from the old manifest is not in the new cache, or if
|
|
// the MD5 sum has changed, delete it. Otherwise the resource is left
|
|
// in the cache and can be reused by the new service worker.
|
|
if (!RESOURCES[key] || RESOURCES[key] != oldManifest[key]) {
|
|
await contentCache.delete(request);
|
|
}
|
|
}
|
|
// Populate the cache with the app shell TEMP files, potentially overwriting
|
|
// cache files preserved above.
|
|
for (var request of await tempCache.keys()) {
|
|
var response = await tempCache.match(request);
|
|
await contentCache.put(request, response);
|
|
}
|
|
await caches.delete(TEMP);
|
|
// Save the manifest to make future upgrades efficient.
|
|
await manifestCache.put('manifest', new Response(JSON.stringify(RESOURCES)));
|
|
// Claim client to enable caching on first launch
|
|
self.clients.claim();
|
|
return;
|
|
} catch (err) {
|
|
// On an unhandled exception the state of the cache cannot be guaranteed.
|
|
console.error('Failed to upgrade service worker: ' + err);
|
|
await caches.delete(CACHE_NAME);
|
|
await caches.delete(TEMP);
|
|
await caches.delete(MANIFEST);
|
|
}
|
|
}());
|
|
});
|
|
// The fetch handler redirects requests for RESOURCE files to the service
|
|
// worker cache.
|
|
self.addEventListener("fetch", (event) => {
|
|
if (event.request.method !== 'GET') {
|
|
return;
|
|
}
|
|
var origin = self.location.origin;
|
|
var key = event.request.url.substring(origin.length + 1);
|
|
// Redirect URLs to the index.html
|
|
if (key.indexOf('?v=') != -1) {
|
|
key = key.split('?v=')[0];
|
|
}
|
|
if (event.request.url == origin || event.request.url.startsWith(origin + '/#') || key == '') {
|
|
key = '/';
|
|
}
|
|
// If the URL is not the RESOURCE list then return to signal that the
|
|
// browser should take over.
|
|
if (!RESOURCES[key]) {
|
|
return;
|
|
}
|
|
// If the URL is the index.html, perform an online-first request.
|
|
if (key == '/') {
|
|
return onlineFirst(event);
|
|
}
|
|
event.respondWith(caches.open(CACHE_NAME)
|
|
.then((cache) => {
|
|
return cache.match(event.request).then((response) => {
|
|
// Either respond with the cached resource, or perform a fetch and
|
|
// lazily populate the cache only if the resource was successfully fetched.
|
|
return response || fetch(event.request).then((response) => {
|
|
if (response && Boolean(response.ok)) {
|
|
cache.put(event.request, response.clone());
|
|
}
|
|
return response;
|
|
});
|
|
})
|
|
})
|
|
);
|
|
});
|
|
self.addEventListener('message', (event) => {
|
|
// SkipWaiting can be used to immediately activate a waiting service worker.
|
|
// This will also require a page refresh triggered by the main worker.
|
|
if (event.data === 'skipWaiting') {
|
|
self.skipWaiting();
|
|
return;
|
|
}
|
|
if (event.data === 'downloadOffline') {
|
|
downloadOffline();
|
|
return;
|
|
}
|
|
});
|
|
// Download offline will check the RESOURCES for all files not in the cache
|
|
// and populate them.
|
|
async function downloadOffline() {
|
|
var resources = [];
|
|
var contentCache = await caches.open(CACHE_NAME);
|
|
var currentContent = {};
|
|
for (var request of await contentCache.keys()) {
|
|
var key = request.url.substring(origin.length + 1);
|
|
if (key == "") {
|
|
key = "/";
|
|
}
|
|
currentContent[key] = true;
|
|
}
|
|
for (var resourceKey of Object.keys(RESOURCES)) {
|
|
if (!currentContent[resourceKey]) {
|
|
resources.push(resourceKey);
|
|
}
|
|
}
|
|
return contentCache.addAll(resources);
|
|
}
|
|
// Attempt to download the resource online before falling back to
|
|
// the offline cache.
|
|
function onlineFirst(event) {
|
|
return event.respondWith(
|
|
fetch(event.request).then((response) => {
|
|
return caches.open(CACHE_NAME).then((cache) => {
|
|
cache.put(event.request, response.clone());
|
|
return response;
|
|
});
|
|
}).catch((error) => {
|
|
return caches.open(CACHE_NAME).then((cache) => {
|
|
return cache.match(event.request).then((response) => {
|
|
if (response != null) {
|
|
return response;
|
|
}
|
|
throw error;
|
|
});
|
|
});
|
|
})
|
|
);
|
|
}
|