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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 https://mozilla.org/MPL/2.0/. */
pub mod dom_manipulation;
pub mod file_reading;
pub mod gamepad;
pub mod history_traversal;
pub mod media_element;
pub mod networking;
pub mod performance_timeline;
pub mod port_message;
pub mod remote_event;
pub mod rendering;
pub mod timer;
pub mod user_interaction;
pub mod websocket;
use std::result::Result;
use crate::dom::globalscope::GlobalScope;
use crate::task::{TaskCanceller, TaskOnce};
/// The names of all task sources, used to differentiate TaskCancellers. Note: When adding a task
/// source, update this enum. Note: The HistoryTraversalTaskSource is not part of this, because it
/// doesn't implement TaskSource.
///
/// Note: When adding or removing a [`TaskSourceName`], be sure to also update the return value of
/// [`TaskSourceName::all`].
#[derive(Clone, Copy, Eq, Hash, JSTraceable, PartialEq)]
pub enum TaskSourceName {
DOMManipulation,
FileReading,
HistoryTraversal,
Networking,
PerformanceTimeline,
PortMessage,
UserInteraction,
RemoteEvent,
/// <https://html.spec.whatwg.org/multipage/#rendering-task-source>
Rendering,
MediaElement,
Websocket,
Timer,
/// <https://www.w3.org/TR/gamepad/#dfn-gamepad-task-source>
Gamepad,
}
impl TaskSourceName {
pub fn all() -> &'static [TaskSourceName] {
&[
TaskSourceName::DOMManipulation,
TaskSourceName::FileReading,
TaskSourceName::HistoryTraversal,
TaskSourceName::Networking,
TaskSourceName::PerformanceTimeline,
TaskSourceName::PortMessage,
TaskSourceName::UserInteraction,
TaskSourceName::RemoteEvent,
TaskSourceName::Rendering,
TaskSourceName::MediaElement,
TaskSourceName::Websocket,
TaskSourceName::Timer,
TaskSourceName::Gamepad,
]
}
}
pub trait TaskSource {
const NAME: TaskSourceName;
fn queue_with_canceller<T>(&self, task: T, canceller: &TaskCanceller) -> Result<(), ()>
where
T: TaskOnce + 'static;
fn queue<T>(&self, task: T, global: &GlobalScope) -> Result<(), ()>
where
T: TaskOnce + 'static,
{
let canceller = global.task_canceller(Self::NAME);
self.queue_with_canceller(task, &canceller)
}
}
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