allow for a service worker manager per origin

components/constellation/serviceworker.rs

@@ -0,0 +1,56 @@
+/* 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 https://mozilla.org/MPL/2.0/. */
+
+use crate::sandboxing::{spawn_multiprocess, UnprivilegedContent};
+use ipc_channel::Error;
+use script_traits::{SWManagerSenders, ServiceWorkerManagerFactory};
+use servo_config::opts::{self, Opts};
+use servo_config::prefs::{self, PrefValue};
+use servo_url::ImmutableOrigin;
+use std::collections::HashMap;
+
+/// Conceptually, this is glue to start an agent-cluster for a service worker agent.
+/// <https://html.spec.whatwg.org/multipage/#obtain-a-service-worker-agent>
+#[derive(Deserialize, Serialize)]
+pub struct ServiceWorkerUnprivilegedContent {
+    opts: Opts,
+    prefs: HashMap<String, PrefValue>,
+    senders: SWManagerSenders,
+    origin: ImmutableOrigin,
+}
+
+impl ServiceWorkerUnprivilegedContent {
+    pub fn new(
+        senders: SWManagerSenders,
+        origin: ImmutableOrigin,
+    ) -> ServiceWorkerUnprivilegedContent {
+        ServiceWorkerUnprivilegedContent {
+            opts: (*opts::get()).clone(),
+            prefs: prefs::pref_map().iter().collect(),
+            senders,
+            origin,
+        }
+    }
+
+    /// Start the agent-cluster.
+    pub fn start<SWF>(self)
+    where
+        SWF: ServiceWorkerManagerFactory,
+    {
+        SWF::create(self.senders, self.origin);
+    }
+
+    /// Start the agent-cluster in it's own process.
+    pub fn spawn_multiprocess(self) -> Result<(), Error> {
+        spawn_multiprocess(UnprivilegedContent::ServiceWorker(self))
+    }
+
+    pub fn opts(&self) -> Opts {
+        self.opts.clone()
+    }
+
+    pub fn prefs(&self) -> HashMap<String, PrefValue> {
+        self.prefs.clone()
+    }
+}