servo/components/script/dom/workers/sharedworkerglobalscope.rs

/* 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 crossbeam_channel::{Sender, unbounded};
use dom_struct::dom_struct;

use crate::dom::abstractworker::WorkerScriptMsg;
use crate::dom::bindings::codegen::Bindings::SharedWorkerGlobalScopeBinding::SharedWorkerGlobalScopeMethods;
use crate::dom::bindings::inheritance::Castable;
use crate::dom::bindings::str::DOMString;
use crate::dom::bindings::trace::CustomTraceable;
use crate::dom::workerglobalscope::WorkerGlobalScope;
use crate::messaging::{ScriptEventLoopReceiver, ScriptEventLoopSender};

pub(crate) enum SharedWorkerScriptMsg {
    CommonWorker(WorkerScriptMsg),
}

// https://html.spec.whatwg.org/multipage/#the-sharedworkerglobalscope-interface
#[dom_struct]
pub(crate) struct SharedWorkerGlobalScope {
    workerglobalscope: WorkerGlobalScope,
    own_sender: Sender<SharedWorkerScriptMsg>,
}

impl SharedWorkerGlobalScope {
    pub(crate) fn event_loop_sender(&self) -> ScriptEventLoopSender {
        ScriptEventLoopSender::SharedWorker(self.own_sender.clone())
    }

    pub(crate) fn new_script_pair(&self) -> (ScriptEventLoopSender, ScriptEventLoopReceiver) {
        let (sender, receiver) = unbounded();
        (
            ScriptEventLoopSender::SharedWorker(sender),
            ScriptEventLoopReceiver::SharedWorker(receiver),
        )
    }
}

impl SharedWorkerGlobalScopeMethods<crate::DomTypeHolder> for SharedWorkerGlobalScope {
    /// <https://html.spec.whatwg.org/multipage/#dom-sharedworkerglobalscope-name>
    fn Name(&self) -> DOMString {
        // The name getter steps are to return this's name.
        // Its value represents the name that can be used to obtain a reference to the worker using the SharedWorker constructor.
        self.workerglobalscope.worker_name()
    }

    /// <https://html.spec.whatwg.org/multipage/#dom-sharedworkerglobalscope-close>
    fn Close(&self) {
        // The close() method steps are to close a worker given this.
        self.upcast::<WorkerGlobalScope>().close()
    }

    // <https://html.spec.whatwg.org/multipage/#handler-sharedworkerglobalscope-onconnect>
    event_handler!(connect, GetOnconnect, SetOnconnect);
}