130 lines
4.5 KiB
HTML
130 lines
4.5 KiB
HTML
<!DOCTYPE html>
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<html>
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<head>
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<base href="$FLUTTER_BASE_HREF" />
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<meta charset="UTF-8" />
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<meta content="IE=Edge" http-equiv="X-UA-Compatible" />
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<meta name="description" content="A new Flutter project." />
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<!-- Block Google Fonts and gstatic.com to prevent requests -->
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<meta http-equiv="Content-Security-Policy" content="font-src 'self' data:; style-src 'self' 'unsafe-inline';">
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<meta name="apple-mobile-web-app-capable" content="yes" />
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<meta name="apple-mobile-web-app-status-bar-style" content="black" />
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<meta name="apple-mobile-web-app-title" content="didvan" />
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<link rel="apple-touch-icon" href="icons/icon.jpg" />
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<link rel="icon" type="image/png" href="favicon.png" />
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<script src="flutter_bootstrap.js" async>
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if ('serviceWorker' in navigator) {
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window.addEventListener('load', function () {
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navigator.serviceWorker.register('firebase-messaging-sw.js', {
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scope: '/firebase-cloud-messaging-push-scope',
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});
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});
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}
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</script>
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<title>Didvan</title>
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<link rel="manifest" href="manifest.json" />
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<style>
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/* Override Roboto font to prevent Google Fonts loading */
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@font-face {
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font-family: 'Roboto';
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font-style: normal;
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font-weight: 100 900;
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font-display: swap;
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src: local('Arial'), local('Tahoma'), local('Helvetica');
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}
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.container {
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width: 100vw;
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height: 100vh;
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display: flex;
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justify-content: center;
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align-items: center;
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}
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.indicator {
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width: 50vw;
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}
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@media only screen and (min-width: 600px) {
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.indicator {
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width: 25vw;
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}
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}
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</style>
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</head>
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<body style="overflow: hidden">
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<div id="loading_indicator" class="container">
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<img class="indicator" src="./assets/lib/assets/animations/loading.gif" />
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</div>
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<script>
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var serviceWorkerVersion = "{{flutter_service_worker_version}}";
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var scriptLoaded = false;
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function loadMainDartJs() {
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if (scriptLoaded) {
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return;
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}
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scriptLoaded = true;
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var scriptTag = document.createElement("script");
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scriptTag.src = `main.dart.js?version=${Math.random()}`;
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scriptTag.type = "application/javascript";
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document.body.append(scriptTag);
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}
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if ("serviceWorker" in navigator) {
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// Service workers are supported. Use them.
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window.addEventListener("load", function () {
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// Wait for registration to finish before dropping the <script> tag.
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// Otherwise, the browser will load the script multiple times,
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// potentially different versions.
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var serviceWorkerUrl =
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"flutter_service_worker.js?v=" + serviceWorkerVersion;
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navigator.serviceWorker.register(serviceWorkerUrl).then((reg) => {
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function waitForActivation(serviceWorker) {
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serviceWorker.addEventListener("statechange", () => {
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if (serviceWorker.state == "activated") {
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console.log("Installed new service worker.");
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loadMainDartJs();
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}
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});
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}
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if (!reg.active && (reg.installing || reg.waiting)) {
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// No active web worker and we have installed or are installing
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// one for the first time. Simply wait for it to activate.
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waitForActivation(reg.installing || reg.waiting);
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} else if (!reg.active.scriptURL.endsWith(serviceWorkerVersion)) {
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// When the app updates the serviceWorkerVersion changes, so we
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// need to ask the service worker to update.
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console.log("New service worker available.");
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reg.update();
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waitForActivation(reg.installing);
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} else {
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// Existing service worker is still good.
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console.log("Loading app from service worker.");
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loadMainDartJs();
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}
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});
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// If service worker doesn't succeed in a reasonable amount of time,
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// fallback to plaint <script> tag.
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setTimeout(() => {
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if (!scriptLoaded) {
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console.warn(
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"Failed to load app from service worker. Falling back to plain <script> tag."
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);
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loadMainDartJs();
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}
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}, 4000);
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});
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} else {
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// Service workers not supported. Just drop the <script> tag.
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loadMainDartJs();
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}
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</script>
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</body>
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</html> |