982787 - Allow passing existing ServiceWorker to InstallEvent inside ServiceWorkerGlobalScope

Status: RESOLVED WONTFIX

(Core :: DOM: Workers, defect)

Description

[Nikhil Marathe [:nsm] (No longer reading bugmail, please needinfo?)]

This allows the new worker to inspect/communicate with the old worker when installing. But this has some tricky semantics, and might be substantial work since we don't allow nested SharedWorkers.

Ben, any thoughts about if this is possible right now or if it will need significant work?

This requires creating a ServiceWorker object in the context of a ServiceWorkerGlobalScope and allows complete API access, including postMessage().

See https://github.com/slightlyoff/ServiceWorker/blob/master/spec/service_worker/index.html#L600

Comment 1

[Ben Turner (not reading bugmail, use the needinfo flag!)]

Nested SharedWorker is not going to happen any time soon (or ever if I have my way ;)). If that's what's needed then we need to sit down and discuss with some kind of stiff drink.

Comment 2

[Nikhil Marathe [:nsm] (No longer reading bugmail, please needinfo?)]

Talked to Ben on Wednesday about this. He said, since ServiceWorkers always run as top-level workers, it will be easier than nesting SharedWorkers.

Comment 3

[Nikhil Marathe [:nsm] (No longer reading bugmail, please needinfo?)]

Since ServiceWorkerRegistration is available in the ServiceWorkerGlobalScope, the older 'event.activeWorker' can now be obtained by 'self.registration.active'. That will be dealt with in bug 1131327