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let swm = Cc["@mozilla.org/serviceworkers/manager;1"].getService(
Ci.nsIServiceWorkerManager
);
function waitForIframeLoad(iframe) {
return new Promise(function (resolve) {
iframe.onload = resolve;
});
}
function waitForRegister(scope, callback) {
return new Promise(function (resolve) {
let listener = {
onRegister(registration) {
if (registration.scope !== scope) {
return;
}
swm.removeListener(listener);
resolve(callback ? callback(registration) : registration);
},
};
swm.addListener(listener);
});
}
function waitForUnregister(scope) {
return new Promise(function (resolve) {
let listener = {
onUnregister(registration) {
if (registration.scope !== scope) {
return;
}
swm.removeListener(listener);
resolve(registration);
},
};
swm.addListener(listener);
});
}
function waitForServiceWorkerRegistrationChange(registration, callback) {
return new Promise(function (resolve) {
let listener = {
onChange() {
registration.removeListener(listener);
if (callback) {
callback();
}
resolve(callback ? callback() : undefined);
},
};
registration.addListener(listener);
});
}
function waitForServiceWorkerShutdown() {
return new Promise(function (resolve) {
let observer = {
observe(subject, topic, data) {
if (topic !== "service-worker-shutdown") {
return;
}
SpecialPowers.removeObserver(observer, "service-worker-shutdown");
resolve();
},
};
SpecialPowers.addObserver(observer, "service-worker-shutdown");
});
}