servo/components/constellation/event_loop.rs
Martin Robinson 3c51df0f1b
compositor: Remove the script channel from the compositor (#36089)
This is a clean up after #36062 and #35985. It removes the script
channel for each pipeline from the compositor. Now all messages are sent
via the `Constellation` first, which will allow breaking the dependency
on script in the compositor.

In addition, scroll states are actually sent via the `Constellation`,
which was an oversight from #36062. Finally, a typo in a method name is
fixed.

Signed-off-by: Martin Robinson <mrobinson@igalia.com>
2025-03-23 11:19:27 +00:00

41 lines
1.3 KiB
Rust

/* 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/. */
//! This module contains the `EventLoop` type, which is the constellation's
//! view of a script thread. When an `EventLoop` is dropped, an `ExitScriptThread`
//! message is sent to the script thread, asking it to shut down.
use std::marker::PhantomData;
use std::rc::Rc;
use ipc_channel::Error;
use ipc_channel::ipc::IpcSender;
use script_traits::ScriptThreadMessage;
/// <https://html.spec.whatwg.org/multipage/#event-loop>
pub struct EventLoop {
script_chan: IpcSender<ScriptThreadMessage>,
dont_send_or_sync: PhantomData<Rc<()>>,
}
impl Drop for EventLoop {
fn drop(&mut self) {
let _ = self.script_chan.send(ScriptThreadMessage::ExitScriptThread);
}
}
impl EventLoop {
/// Create a new event loop from the channel to its script thread.
pub fn new(script_chan: IpcSender<ScriptThreadMessage>) -> Rc<EventLoop> {
Rc::new(EventLoop {
script_chan,
dont_send_or_sync: PhantomData,
})
}
/// Send a message to the event loop.
pub fn send(&self, msg: ScriptThreadMessage) -> Result<(), Error> {
self.script_chan.send(msg)
}
}