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var keepAlivePromise;
var resolvePromise;
var result = "Failed";
onactivate = function (event) {
event.waitUntil(clients.claim());
};
onmessage = function (event) {
if (event.data === "Start") {
event.waitUntil(Promise.reject());
keepAlivePromise = new Promise(function (resolve, reject) {
resolvePromise = resolve;
});
result = "Success";
event.waitUntil(keepAlivePromise);
event.source.postMessage("Started");
} else if (event.data === "Result") {
event.source.postMessage(result);
if (resolvePromise !== undefined) {
resolvePromise();
}
}
};
addEventListener("fetch", e => {
let respondWithPromise = new Promise(function (res, rej) {
setTimeout(() => {
res(new Response("ok"));
}, 0);
});
e.respondWith(respondWithPromise);
// Test that waitUntil can be called in the promise handler of the existing
// lifetime extension promise.
respondWithPromise.then(() => {
e.waitUntil(
clients.matchAll().then(cls => {
dump(`matchAll returned ${cls.length} client(s) with URLs:\n`);
cls.forEach(cl => {
dump(`${cl.url}\n`);
});
if (cls.length != 1) {
dump("ERROR: no controlled clients.\n");
}
client = cls[0];
client.postMessage("Done");
})
);
});
});
|
