blob: d0a70a5312a57db47f1c92ac24203f9c1823e276 (
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
|
/* Any copyright is dedicated to the Public Domain.
http://creativecommons.org/publicdomain/zero/1.0/ */
"use strict";
// Copied from shared-head.js
function waitUntil(predicate, interval = 10) {
if (predicate()) {
return Promise.resolve(true);
}
return new Promise(resolve => {
setTimeout(function () {
waitUntil(predicate, interval).then(() => resolve(true));
}, interval);
});
}
// this flag will be flipped externally from controlled-install.html
// by sending a message event to the worker
let canInstall = false;
self.addEventListener("message", event => {
if (event.data === "install-service-worker") {
canInstall = true;
}
});
self.addEventListener("install", event => {
event.waitUntil(waitUntil(() => canInstall));
});
|
