/
service_worker_controller.js
51 lines (46 loc) · 1.4 KB
/
service_worker_controller.js
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
import { Controller } from "stimulus";
export default class extends Controller {
static targets = ["pageSavedNotice", "savingPageNotice"];
initialize() {
if (navigator.serviceWorker) {
if (navigator.serviceWorker.controller) {
this.stateChange();
} else {
navigator.serviceWorker
.register("/service-worker.js", { scope: "./" })
.then(function (reg) {
console.log("[Companion]", "Service worker registered!");
console.log(reg);
});
navigator.serviceWorker.addEventListener(
"controllerchange",
this.controllerChange.bind(this)
);
}
}
}
controllerChange(event) {
console.log(
'[controllerchange] A "controllerchange" event has happened ' +
"within navigator.serviceWorker: ",
event
);
navigator.serviceWorker.controller.addEventListener(
"statechange",
this.stateChange.bind(this)
);
}
stateChange() {
let state = navigator.serviceWorker.controller.state;
console.log(
"[controllerchange][statechange] " + 'A "statechange" has occured: ',
navigator.serviceWorker.controller.state,
" state: ",
state
);
if (state === "activated" || state === "redundant") {
this.savingPageNoticeTarget.classList.add("is-hidden");
this.pageSavedNoticeTarget.classList.remove("is-hidden");
}
}
}