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authorMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
committerMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
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tree10027f336435511475e392454359edea8e25895d /devtools/server/service-worker-child.js
parent49ee0794b5d912db1f95dce6eb52d781dc210db5 (diff)
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Add m-esr52 at 52.6.0
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diff --git a/devtools/server/service-worker-child.js b/devtools/server/service-worker-child.js
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+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+"use strict";
+
+let { classes: Cc, interfaces: Ci, utils: Cu } = Components;
+let swm = Cc["@mozilla.org/serviceworkers/manager;1"].
+ getService(Ci.nsIServiceWorkerManager);
+
+addMessageListener("serviceWorkerRegistration:start", message => {
+ let { data } = message;
+ let array = swm.getAllRegistrations();
+
+ // Find the service worker registration with the desired scope.
+ for (let i = 0; i < array.length; i++) {
+ let registration =
+ array.queryElementAt(i, Ci.nsIServiceWorkerRegistrationInfo);
+ // XXX: In some rare cases, `registration.activeWorker` can be null for a
+ // brief moment (e.g. while the service worker is first installing, or if
+ // there was an unhandled exception during install that will cause the
+ // registration to be removed). We can't do much about it here, simply
+ // ignore these cases.
+ if (registration.scope === data.scope && registration.activeWorker) {
+ // Briefly attaching a debugger to the active service worker will cause
+ // it to start running.
+ registration.activeWorker.attachDebugger();
+ registration.activeWorker.detachDebugger();
+ return;
+ }
+ }
+});