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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 crate::dom::bindings::codegen::Bindings::MessageChannelBinding::{MessageChannelMethods, Wrap};
use crate::dom::bindings::error::{Error, Fallible};
use crate::dom::bindings::reflector::{reflect_dom_object, Reflector};
use crate::dom::bindings::root::{Dom, DomRoot};
use crate::dom::globalscope::GlobalScope;
use crate::dom::messageport::MessagePort;
use dom_struct::dom_struct;
#[dom_struct]
pub struct MessageChannel {
reflector_: Reflector,
port1: Dom<MessagePort>,
port2: Dom<MessagePort>,
}
impl MessageChannel {
/// <https://html.spec.whatwg.org/multipage/#dom-messagechannel>
pub fn Constructor(global: &GlobalScope) -> Fallible<DomRoot<MessageChannel>> {
let incumbent = GlobalScope::incumbent().ok_or(Error::InvalidState)?;
// Step 1
let port1 = MessagePort::new(&incumbent);
// Step 2
let port2 = MessagePort::new(&incumbent);
incumbent.track_message_port(&*port1, None);
incumbent.track_message_port(&*port2, None);
// Step 3
incumbent.entangle_ports(
port1.message_port_id().clone(),
port2.message_port_id().clone(),
);
// Steps 4-6
let channel = reflect_dom_object(
Box::new(MessageChannel {
reflector_: Reflector::new(),
port1: Dom::from_ref(&port1),
port2: Dom::from_ref(&port2),
}),
global,
Wrap,
);
// Step 7
Ok(channel)
}
}
impl MessageChannelMethods for MessageChannel {
/// <https://html.spec.whatwg.org/multipage/#dom-messagechannel-port1>
fn Port1(&self) -> DomRoot<MessagePort> {
DomRoot::from_ref(&*self.port1)
}
/// <https://html.spec.whatwg.org/multipage/#dom-messagechannel-port2>
fn Port2(&self) -> DomRoot<MessagePort> {
DomRoot::from_ref(&*self.port2)
}
}
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